FIELD OF INVENTION
The present invention generally relates to heating, ventilation and air-conditioning (HVAC) systems and more particularly to a temperature management system for seat arrangements of a vehicle.
BACKGROUND OF THE INVENTION
The global increase in temperature has necessitated use of heating, ventilation and air-conditioning (HVAC) systems almost everywhere, from residential establishments to workplaces and even automobiles. For example, automobiles employ air-conditioning systems to provide flow of cool air (such as, air having a reduced temperature as compared to a temperature of cabin of the automobile) to increase comfort of one or more passengers travelling within the automobile.
However, such air-conditioning systems are generally unable to increase comfort such as at a surface of a seat that each passenger is seated thereon. Consequently, the passengers experience discomfort even when the air-conditioning system of the automobile is operated to allow flow of cool air into the cabin. Furthermore, the passengers experience build-up of moisture (due to sweating) along the surface of the seat that conventional air-conditioning systems cannot mitigate.
Various solutions have been attempted that comprise cooling systems incorporated within a seat arrangement. In an existing solution, a thermoelectric device disposed in series with the HVAC module for heating and cooling air Ta from the HVAC module for delivery to seat passages of a seat assembly. The thermoelectric device includes a thermoelectric module, a heat exchanger having cold and hot sides, ductwork, a divider that sends variable air flow to the cold or hot sides of the thermoelectric module, and thermal insulation between the cold and hot sides downstream of the heat exchanger. The fan of the HVAC module is the sole motivation for moving the conditioned air Ta originating from the central HVAC module through the thermoelectric device and to the seat assembly.
In another prior art solution, a seat air blowing device for a vehicle is provided which includes a seat for the vehicle composed of a seating section seated by an occupant and a backrest section hit by the back of the seated occupant; a suction port opened on the surface of the seat for a vehicle communicating with a cabin; a suction air duct formed inside the seat for a vehicle communicating with the suction port; a blower forcibly generating airflow in the suction air duct; and a pocket cover for covering a portion of the surface of the seat for a vehicle. Further, the suction port is provided

facing the back side of the pocket cover. This enables the seat air blowing device for a vehicle to attain both enhanced appearance and air blowing performance
However, the existing and conventional solutions disclosed above provide the cooling arrangement which solely depends on the mechanism for cooling arranged and does not provide cooling depending upon the temperature conditions and/or occupant comfort requirements to blow and/or suck the air from said vehicle seat arrangement. Therefore, in light of the foregoing discussion, there exists a need to overcome various problems associated with conventional cooling systems incorporated within seat arrangements.
SUMMARY OF THE INVENTION
The present invention generally relates to a system and method of automatically controlling
temperature near to a seat arrangement of a vehicle.
In an embodiment of the present invention a method of automatically controlling temperature around a front seat arrangement is disclosed. The method comprising steps: receiving values from a plurality of sensors configured to detect respective signals corresponding to seat arrangement and vehicle cabin, wherein at least one of the plurality of sensors comprises a temperature sensor and/or a timer, wherein the temperature sensor is configured to detect temperature of the air around the seat arrangement and the timer is configured to measure elapsed time period from a last mode of operation of the seat arrangement, wherein the seat arrangement comprises a backrest area and a seat area arranged pivotally to each other; comparing the received values of the sensing parameters with corresponding threshold values; and activating five modes in synchronous manner or at least one mode of operation amongst a plurality of modes of operation of the seat arrangement, wherein during a first mode of operation a controller is configured to create a suction of an air flow using a suction fan at the backrest area and the seat area of the seat arrangement, wherein during a second mode of operation the controller is configured to create a suction of air using the suction fan at the seat area and drives the air flow to the backrest area using a blower fan, wherein during a third mode of operation the controller is configured to drive the air flow to a plurality of diffusers of the backrest area and seat area of the seat arrangement using the blower fan, wherein during a fourth mode of operation the controller is configured to drive the air flow from the blower fan to a rear air flow vent and wherein during a fifth mode of operation, the controller is configured to turn off the blower fan and the suction fan.

Another embodiment of the present invention states a system of automatically controlling temperature near to a seat arrangement. The system comprising: a backrest area and a seat area arranged pivotally to each other, wherein the backrest area and the seat area are coupled to a main conduit comprising an elongated and hollow structure configured to allow flow of a fluid within; a plurality of sensors operatively coupled to a controller, wherein a first sensor among the plurality of sensors detects temperature of the seat arrangement and a second sensor includes a timer; a suction fan, operatively coupled to the controller, is configured to allow air suction from the seat area and/or backrest area through air diffusers to an outside environment via an outlet conduit.
Another embodiment of the present invention states a blower fan operatively coupled to the controller and is configured to allow air blow toward the seat area and/or backrest area through the air diffusers, wherein the air diffusers disposed along the transverse direction of the backrest area and the seat area; a plurality of non-returnable valves disposed within the seat arrangements, a rear air flow vent coupled to the blower fan through the main conduit via the first valve, wherein the rear air flow vent is configured to drive air flow from the blower fan to the rear portion of the seat arrangement.
Another embodiment states a controller configured to operatively control operations of the plurality of sensors, the suction fan, the blower fan, the first non-returnable, the second non-returnable, the third non-returnable and the rear air flow vent switch, wherein the controller is configured to activate or deactivate at least the suction fan, the blower fan, the first non-returnable, the second non-returnable, the third non-returnable and the rear air flow vent switch based on the inputs of the plurality of sensors to activate the modes in synchronize manner from first mode to fifth mode or at least one preset or default mode of operation of the cooling of the seat arrangement, and/or controller has provision to get the input from inbuilt database or via communication protocol for geographical location and weather data.
To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings
BRIEF DESCRIPTION OF FIGURES

These and other features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
Figure 1 illustrates a block diagram of components installed in a system of automatically controlling temperature around a front seat arrangement of a vehicle in accordance with an embodiment of the present invention.
Figure 2 illustrates flowchart of steps involved in automatically controlling temperature around a front seat arrangement of said vehicle in accordance with an embodiment of the present invention.
Figure 3 illustrates a seat arrangement of said vehicle with different inlets and outlets for automatically controlling temperature in accordance with an embodiment of the present invention.
Figure 4 illustrates a main controller communicating with the components of the system in order to automatically control temperature around front seat of said vehicle in accordance with an embodiment of the present invention.
Figure 5a-b illustrates a flowchart of temperature-based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
Figure 6a-b illustrates a flowchart of time-based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
Figure 7a-b illustrates a flowchart of temperature and time-based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
Figure 8 illustrates a schematic of the main controller activating the plurality of modes in synchronous manner with respect to cabin temperature, time and GPRS location of said vehicle in accordance with an embodiment of the present invention.
Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more

components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
DETAILED DESCRIPTION
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof.
Reference throughout this specification to "an aspect", "another aspect" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non¬exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises...a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
Figure 1 illustrates a block diagram of components installed in a system of automatically controlling temperature around a front seat arrangement of a vehicle in accordance with an embodiment of the present invention. The system of automatically controlling temperature near to a seat arrangement (102) mainly includes a backrest area (104) and a seat area (106) which are arranged pivotally to each other. The backrest area (104) and the seat area (106) are coupled to a main conduit (124) which is an elongated and hollow structure configured to allow flow of a fluid within.
A plurality of sensors (108) is operatively coupled to a controller (110) and a first sensor (112) among the plurality of sensors is a temperature sensor which detects temperature of the seat arrangement and a second sensor (114) is a timer in order to measure a clock time for a specific time interval in which the cooling of said seat arrangement (102) is provided.
A suction fan (116) is provided and is operatively coupled to the controller (110), is configured to allow air suction from the seat area (104) and/or backrest area (106) through air diffusers to an outside surrounding via an outlet conduit.
A blower fan (118) is also provided and is operatively coupled to the controller (110) and is configured to allow air blow toward the seat area and/or backrest area (104, 106) through the air diffusers. The air diffusers disposed along the transverse direction of the backrest area and the seat area (104, 106).
A plurality of non-returnable valves (120) is disposed within the seat arrangements (102). A rear air flow vent (122) is coupled to the blower fan (118) through the main conduit (124) via a first valve, and the rear air flow vent (122) is configured to drive air flow from the blower fan (118) to the rear portion of the seat arrangement (102).
The controller (HO)herein is mainly configured to operatively control operations of the plurality of sensors (108), the suction fan (116), the blower fan (118), the first non-returnable, the second non-returnable, the third non-returnable (120) and the rear air flow vent (122) switch. The controller (110) is configured to activate or deactivate at least the suction fan (116), the blower fan (118), the first non-returnable, the second non-returnable, the third non-returnable (120) and the rear air flow vent (122) switch based on the inputs of the plurality of sensors (108) to activate a plurality of modes (126) in synchronize manner from a first mode to a fifth mode or at least one preset or default mode

of operation of the cooling of the seat arrangement (102).The controller (110) has provision to get an input from an inbuilt database or via a communication protocol for geographical location and weather data.
During a first mode of operation (126) the controller (110) is configured to create a suction of an air flow using the suction fan (116) at the backrest area and the seat area of the seat arrangement (102). During a second mode of operation the controller (110) is configured to create a suction of air using the suction fan at the seat area (106) and drives the air flow to the backrest area (104) using the blower fan (118).During a third mode of operation the controller (110) is configured to drive the air flow to the air diffusers of the backrest area and seat area of the seat arrangement (102) using the blower fan. During a fourth mode of operation the controller (110) is configured to drive the air flow from the blower fan to a rear air flow vent (122) and during a fifth mode of operation, the controller (110) is configured to turn off the blower fan (118) and the suction fan (116).
The controller (110) is configured to activate the first mode of operation of the seat arrangement (102), when the received temperature value is greater than or equal to a first threshold temperature value or when the elapsed time period is beyond a first threshold period or a combination thereof. The controller (110) is configured to turn off the blower fan (118), a first non-returnable valve (120) and a rear air flow vent (122) switch and the controller is configured to turn on the suction fan (116), a second non-returnable valve and a third non-returnable valve to create suction of air at the backrest area and the seat area (104, 106). The suction fan (116) is configured to allow flow of air sucked in through the seat area and/or backrest area (104, 106) to flow into an outlet conduit and to an outside environment.
The controller (110) is configured to activate the second mode of operation of the seat arrangement (102), when the received temperature value is less than the first threshold temperature but greater than or equal to a second threshold temperature, or when the elapsed time period is greater than the first threshold period and less than or equal to a second threshold period. The controller (110) is configured to turn off the second non-returnable valve and the rear air flow vent (122) switch and the controller (110) is configured to turn on the blower fan (118), the suction fan (116), the first non-returnable valve and the third non-returnable valve to create suction at the seat area (106) and flow of the air at the backrest area (104) through the blower fan (118) via the first valve through the air diffusers.

Figure 2 illustrates flowchart of steps involved in automatically controlling temperature around a front seat arrangement of said vehicle in accordance with an embodiment of the present invention. The method of automatically controlling temperature around a front seat arrangement of a vehicle is disclosed. The operation involves the following steps:
The first step (202) involves receiving values from a plurality of sensors configured to detect respective signals corresponding to seat arrangement and vehicle cabin, wherein at least one of the plurality of sensors comprises a temperature sensor and/or a timer, wherein the temperature sensor is configured to detect temperature of the air around the seat arrangement and the timer is configured to measure elapsed time period from a last mode of operation of the seat arrangement, wherein the seat arrangement comprises a backrest area and a seat area arranged pivotally to each other. The second step (204) states comparing the received values of the sensing parameters with corresponding threshold values.
The step (206) involves activating five modes in synchronous manner or at least one mode of operation amongst a plurality of modes of operation of the seat arrangement, wherein during a first mode of operation a controller is configured to create a suction of an air flow using a suction fan at the backrest area and the seat area of the seat arrangement, wherein during a second mode of operation the controller is configured to create a suction of air using the suction fan at the seat area and drives the air flow to the backrest area using a blower fan, wherein during a third mode of operation the controller is configured to drive the air flow to a plurality of diffusers of the backrest area and seat area of the seat arrangement using the blower fan, wherein during a fourth mode of operation the controller is configured to drive the air flow from the blower fan to a rear air flow vent and wherein during a fifth mode of operation, the controller is configured to turn off the blower fan and the suction fan.
The activation of different modes of operation as mentioned in third step as stated above can be described in following steps.
The step (208) involves activating the first mode of operation of the seat arrangement, when the received temperature value is greater than or equal to a first threshold temperature value or when the elapsed time period is beyond a first threshold period or a combination thereof, wherein the controller is configured to turn off the blower fan, a first non-returnable valve and a rear air flow vent switch and the controller is configured to turn on the suction fan, a second non-returnable valve and a third non-returnable valve to create suction of air at the backrest area and the seat area, wherein the

suction fan is configured to allow flow of air sucked in through the seat area and/or backrest area to flow into an outlet conduit and to an outside environment.
The step (210) describes activating the second mode of operation of the seat arrangement, when the received temperature value is less than the first threshold temperature but greater than or equal to a second threshold temperature, and/or when the elapsed time period is greater than the first threshold period and less than or equal to a second threshold period, wherein the controller is configured to turn off the second non-returnable valve and the rear air flow vent switch and the controller is configured to turn on the blower fan, the suction fan, the first non-returnable valve and the third non-returnable valve to create suction at the seat area and flow of the air at the backrest area through the blower fan via the first valve through the air diffusers.
The step (212) states activating the third mode of operation of the seat arrangement, when the received temperature value is less than the second threshold temperature but greater than or equal to a third threshold temperature, and/or when the elapsed time period is greater than the second threshold period and less than or equal to a third threshold period, wherein the controller is configured to turn off the suction fan, the third non-returnable valve and the rear air flow vent switch and the controller is configured to turn on the blower fan, the first non-returnable valve and the second non-returnable valve to create flow of the air at the seat area and the backrest area through the blower fan via the air diffusers.
The further step (214) involves activating the fourth mode of operation of the seat arrangement, when the received temperature value is less than the third threshold temperature but greater than or equal to a fourth threshold temperature, and/or when the elapsed time period is greater than the third threshold period and less than or equal to a fourth threshold period, wherein the controller is configured to turn off the suction fan, the second non-returnable valve and the third non-returnable valve and the controller is configured to turn on the blower fan, the first non-returnable valve and the rear air flow vent switch to create flow of the air at the rear portion of the seat arrangement.
Figure 3 illustrates a seat arrangement of said vehicle with different inlets and outlets for automatically controlling temperature in accordance with an embodiment of the present invention. The seat arrangement is a structure on which a user can be seated. The seat arrangement can be installed within an automobile (such as a car). However, it will be appreciated that the seat arrangement can be implemented for seating elsewhere, without departing from a scope of the present disclosure. In an example, the seat arrangement is installed within a residential space (such

as a home or office). As shown, the seat arrangement comprises a backrest area and a seat area. It will be appreciated that when the user employs the seat arrangement to be seated thereon, the seat arrangement will comprise the backrest area to enable the user to rest their back against a stationary structure. Furthermore, the seat arrangement comprises the seat area to provide the user with a base on which the user can support their body while sitting. Moreover, if the seat arrangement is installed within the automobile (such as a car), the user can operate the automobile using a steering wheel associated with the automobile, while sitting on the seat arrangement. Optionally, the backrest area can be pivotally coupled to the seat area. Such a pivotal coupling of the backrest area with the seat area allows the user to adjust the backrest area based on their comfort. Optionally, the seat arrangement can further comprise an armrest disposed on at least one side of the seat arrangement. Such an armrest allows the user to rest their arm while being seated on the seat arrangement.
The seat arrangement of the present invention as displayed in figure 3 includes mainly a Backrest Area (SI), a Seat area (S2), a plurality of Air Diffusers (Df), a Blower Fan (Fl), a Suction Fan (F2), at least three Non-returnable Valves (Nl, N2, N3), an Air distribution Duct (Ad), a Blower Fan Air Inlet Vent (Al), a Suction Fan Air Outlet Vent (A2), and a Rear Air Flow Vent /Switch (RV).
The air diffusers (Df) are arranged in orderly fashion along the backrest area and the seat area of the seat arrangement. The diffusers are configured to receive air from the blower fan and blow said air towards the backrest area and the seat area. The blower fan (Fl) is arranged to the seat arrangement main conduit which is disposed at a middle of backrest area and the seat area, such that the blower fan transmits said air to the whole seat arrangement. The blower fan is coupled with a first non-return valve (Nl) and a second non-return valve (N2) which are disposed along bottom section of the main central conduit.
The suction fan (F2) is disposed at the bottom of seat area and is coupled with the third non-return valve (N3). The suction fan sucks air from the cabin surrounding and transmits said air towards the blower fan (Fl) via said non-return valves (Nl and N2). The air distribution duct is disposed along the length of the backrest area parallel to the main central conduit. The blower fan air inlet vent is disposed parallel to the main duct in a similar fashion as that of the air distribution duct and is coupled to the blower fan via main duct. The suction fan air outlet vent is disposed at the bottom of the seat area and the rear air flow vent or switch is disposed at the backrest area over the main conduit.

Figure 4 illustrates a main controller communicating with the components of the system in order to automatically control temperature around front seat of said vehicle in accordance with an embodiment of the present invention. The main or mode controller can be disposed over an instrument panel of a vehicle when said seat arrangement is installed in the automobile. The mode controller receives input from a number of sensors such as temperature sensor (Tc) which detects and measures temperature inside a cabin where said seat arrangement is installed. The mode controller further receives inputs from humidity sensor (Hs), occupancy sensor (Os). A clock or timer is also installed and is continuously communicating with the mode controller. The mode controller, upon receiving different inputs from these sensors inside the cabin, activates different modes of operation in a synchronization manner. The mode controller upon receiving values from said sensors which are configured to detect respective signals corresponding to seat arrangement and vehicle cabin or a room or office. The temperature sensor (Tc) is configured to detect temperature of the air around the seat arrangement and the timer is configured to measure elapsed time period from a last mode of operation of the seat arrangement. The received values are compared with the sensing parameters of corresponding threshold values.
The mode controller then activates five modes of operation in synchronous manner or at least one mode of operation amongst a plurality of modes of operation of the seat arrangement. In a first mode of operation the controller is configured to create a suction of an air flow using a suction fan (F2) at the backrest area and the seat area of the seat arrangement. In a second mode of operation the controller is configured to create a suction of air using the suction fan (F2) at the seat area and drives the air flow to the backrest area using a blower fan (Fl).
In a third mode of operation the controller is configured to drive the air flow to a plurality of diffusers of the backrest area and seat area of the seat arrangement using the blower fan (Fl) and in a fourth mode of operation the controller is configured to drive the air flow from the blower fan (Fl) to a rear air flow vent (Rv). In a fifth mode of operation, the controller is configured to turn off the blower fan (Fl) and the suction fan (F2).
Figure 5a-b illustrates a flowchart of temperature-based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
In an embodiment, there are five modes of operation in auto mode or automatic seat cooling arrangement system. When the mode controller receives parameters from the temperature sensor, it

starts or turns the system into active mode (502). The mode controller activates a first mode of operation (504) when the temperature sensor detects temperature greater than a first threshold limit (say 35 degree Celsius), mode A is activated. The mode controller turns a blower fan (indicated as Fl) off, along with a first non-return valve (Nl) and rear air flow vent (Rv). A suction fan (F2) is turned on in a high speed and a second and third non-return valves (N2, N3) are turned on. The backrest area (SI) and the seat area (S2) are configured to suck air from the suction fan via the second and third valves. The temperature sensor (Tc) continuously detects temperature inside the cabin and transmits it to the mode controller.
Now when the temperature falls from the first threshold value to a second threshold value (say between 28 to 35 degree Celsius), the mode controller activates mode B or second mode of operation (506). The blower fan (Fl) is turned on at high speed along with the suction fan (F2) and the first non-return valve (Nl) is turned on along with third valve (N3). The second valve and the rear air flow vent is kept in off condition. The backrest area is configured to blow air received from the blower fan and the seat area is configured to suck air from the suction fan. After that when the temperature of the seat arrangement is between the second threshold value to a third threshold value (say between 21 to 28 degree Celsius), a third mode C is activated as indicated by (508). The mode controller herein keeps the blower fan on and turns suction fan off. The first and second valves are open and the third valve and the air vent is kept off. The seat area and the backrest area herein are configured to blow the air via air diffusers from the blower fan.
A fourth mode (510) or mode D is activated when the temperature sensors detect temperature between the third threshold value and a fourth threshold value (say between 10 to 21 degree Celsius). The mode controller herein keeps the blower fan on and turns off the suction fan, second and third non-return valve. The first valve is kept in on condition in order to blow air out from the blower fan outlet. The rear vent is also turned on and the seat and backrest areas are kept off. The rear vent blows out the air from the rear of the seat arrangement. The mode controller herein detects that the rear vent is in on condition by a rear occupant. Now in the final mode of operation (512) when said rear air flow event is off the mode controller activates final mode or OFF mode and the suction and blower fan and the valves along with seat area and the backrest area are kept in off condition.
The system in manual mode is controlled by a user in which the user can select desired active mode directly. The reference value of Envelope temperature (Tc) is adaptive in nature and the derived value will vary based on vehicle dynamics, heat load and user preference.

Figure 6a-b illustrates a flowchart of time-based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
The system herein detects the time elapsed during different modes of operation and the temperature inside the cabin received by the mode controller. When the clock time displays zero (602), the mode controller activates a first mode (604) or mode A when it receives a time of a first threshold limit (say less than 10 minutes). The mode controller herein activates the second mode (606) or mode B when the time elapsed is between the first and a second threshold limit (say 10 to 20 minutes). The blower fan, suction fan, valves, rear vent, and seat and backrest area are turned according to the same procedure as in case of envelope temperature (detected by temperature sensor). The mode C is activated when time elapsed is between say, 20 to 35 minutes as indicated (608).
The mode controller activates mode D as displayed in step (610) when rear air vent flow is kept in ON condition by the rear occupant. After that the mode controller checks that if the rear vent flow is turned off, the clock timer is reset to zero as displayed in step (612). The clock timer after the final mode can be reset to zero. The current time "t" and its limits and envelop temperature (Tc) are adaptive in nature. The derived values will vary based on vehicle dynamics, heat load and user preference.
Figure 7a-b illustrates a flowchart of temperature and time based threshold values and a table indicating operations of the various components of said system in a plurality of modes in synchronous manner in accordance with an embodiment of the present invention.
The clock timer and the envelope temperature of temperature sensor are displayed and the mode controller accordingly activates different modes (702). When the temperature received by mode controller is above the first threshold value (say 35 degree Celsius), mode A is activated as indicated step (704) in which the mode controller turns the blower fan off, suction fan on at high speed, first valve off, second and third valve on, rear air flow vents off and the backrest and the seat area suck the air from the suction fan. After some time on the timer clock (say greater than or equal to 10 minutes) as displayed (706), mode controller activates mode A* in which blower fan is off, suction fan is kept at low speed, rest is same as in mode A.
The mode B and B* are activated by the mode controller when temperature is, say, between 28 to 35 degree Celsius (708) and the timer indicates greater than or equal to 20 minutes (710). First in mode

B* or (710), the blower fan, and suction fan are kept on at low speed and first and third valve open, and the vent off. The backrest area blows the air and the seat area sucks the air from the blower fan and the suction fan respectively. In mode B (708), the speed of the blower fan and the suction is increased by the mode controller automatically.
The mode C and C* are activated for the temperature, say, between 21-28 degree Celsius (712) and timer indicates greater than or equal to, say, 35 minutes (714). The mode controller turns blower fan on at low speed, suction fan off, the first and second valves on, third valve off along with rear vent in mode C*. In C mode, blower fan speed is increased. The backrest area and the seat area are configured to blow the air received from the blower fan.
The mode D is activated when rear air flow vent is turned on, and the blower fan is kept at increased speed and the first valve is kept on. The seat and backrest area are kept closed. The rear vent drains the air from the seat and the backrest area.
The final mode (716) is such that the when the rear vent flow is turned off and the rest of the components are also turned in off condition. The clock timer is reset back to zero.
The user can manually select a desired mode directly depending upon the comfort of the user. The current time "t" and its limits and envelop temperature (Tc) are adaptive in nature. Derived value will vary based on vehicle dynamics, heat load and user preference.
Figure 8 illustrates a schematic of the main controller activating the plurality of modes in synchronous manner with respect to cabin temperature, time and GPRS location of said vehicle in accordance with an embodiment of the present invention. The different modes as described in figure 7 are illustrated in figure 8. The activation of different modes can also vary with cabin temperature, the location of the vehicle or room or enclosed space and the clock time. The mode controller mainly depends on the adaptive temperature constants and the adaptive time constants (802). For example, in step (804) or mode A/A*, the blower fan (814), the first non-return valve (818) and the rear air flow vent (824) are turned off and the suction fan (816), second and third valves (820, 822) are turned on. The blower fan (814) and the suction fan (816) work between source and drain of air flow. In step (806) or mode B/B*, the blower fan (814), suction fan (816), first and third valve (818, 822) are kept on and second valve (820) and rear vent valve (824) are kept in off mode. Similarly, for step (808) or mode C/C*, the blower fan (814), first and second valves (818, 820) are kept on and the suction fan (816) and third valve (822) along with rear vent (824) are kept in off mode. In mode D as indicated

by step (810), the blower fan (814) is kept on, along with first valve (818) and rear air flow vent (824) and the suction fan (816) is kept off along with second and third valve (820, 822). In OFF mode (812) all the components are kept in off mode automatically by the mode controller after a desired cooling is reached or by the user manually through a remote controller (maybe) when a desired condition is reached.
All the modes refereed in above sections rely on geographical location and weather data. The data obtained is used to decide the threshold values in each mode.
The present invention further states that a thorough vehicle testing and calibration has ensured elimination of temperature differences in fore and aft of the driver sitting on front seat. Above is possible due to adequate air convection currents and stabilization achieved by using the cooling modes in synchronous manner.
All the modes described are equally effective in fresh air as well as recirculation modes.
The design has self-diagnostics feature inbuilt so that in case of failure in any of the hardware elements, the electronic control module (ECU) sets operation mode to single default state which is preset mode.
The present invention further states that the user can manually select each of the mode depending on the condition which he/she desires. The manual operation of the system allows the user to select each temperature of the cabin at each time period indicated by the timer clock.
The automatic operation of the system allows the user to let the mode controller decide on the factors received from the sensors and perform specific cooling operation.
The present invention further states that a control algorithm regulates multiple fans put within the seat to provide forced air circulation causing normalization of air temperature in fore and aft of driver. The controlled air flow from the fans blows through a diffusion layer to spread the cool air throughout the seating material, cooling the whole surface.
The control algorithm ensures quick absorption of heat from surface of occupant by inducing circulations in near dead flow zones. This assists in faster normalization of vehicle cabin temperature thereby resulting in fuel savings and emission reductions. The control system ensures effective comfort with minimal power requirement taking advantage of low flow resistance of the porous materials used for seat cover fabric.

The user defined strategy (customized control) can be saved in the ECU so that same can be rerun later. The user has options to convert manually adjusted mode to automated modes.
The standard comfort mode algorithm works in synchronization with car climate control and is adaptive in nature.
A proper self-diagnostic feature is implemented so that functioning restores to default state without damaging any design part. The design has a startup and shut down feature that can be saved in ECU's memory and used as automated algorithm.
The parameters of control system are adaptive in nature based on vehicle's climate system response and heat load conditions. The derived time constants for control system are independent of vehicle and only cater to driver's comfort system. The time step is basically driven by "natural convection" which is mostly prevalent in car rear and "forced convection" that is being brought in to by the design presented in patent
The present invention further states that additional sensor to measure and monitor the comfort of driver can be installed that also work in synchronization with vehicles Climate Control Unit (CCU). With variable capacity vehicle climate control system and with only driver sitting inside vehicle, the aggressive cooling modes can be dampened. For example, reducing compressor capacity and closure of rear and other front grills. This will save fuel and reduce emissions as well. The control system can actively work in coordination with vehicle AC system to optimize single or multiple-zone cooling and provide feedback to CCU.
Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any component(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature or component of any or all the claims.

We Claim:
1. A method of automatically controlling temperature around a front seat arrangement of a vehicle
the method comprising:
receiving values from a plurality of sensors configured to detect respective signals corresponding to seat arrangement and vehicle cabin, wherein at least one of the plurality of sensors comprises a temperature sensor and/or a timer, wherein the temperature sensor is configured to detect temperature of the air around the seat arrangement and the timer is configured to measure elapsed time period from a last mode of operation of the seat arrangement, wherein the seat arrangement comprises a backrest area and a seat area arranged pivotally to each other;
comparing the received values of the sensing parameters with corresponding threshold values; and
activating five modes in synchronous manner or at least one mode of operation amongst a plurality of modes of operation of the seat arrangement, wherein during a first mode of operation a controller is configured to create a suction of an air flow using a suction fan at the backrest area and the seat area of the seat arrangement, wherein during a second mode of operation the controller is configured to create a suction of air using the suction fan at the seat area and drives the air flow to the backrest area using a blower fan, wherein during a third mode of operation the controller is configured to drive the air flow to a plurality of diffusers of the backrest area and seat area of the seat arrangement using the blower fan, wherein during a fourth mode of operation the controller is configured to drive the air flow from the blower fan to a rear air flow vent and wherein during a fifth mode of operation, the controller is configured to turn off the blower fan and the suction fan.
2. The method as claimed in claim 1, wherein the method comprises:
activating the first mode of operation of the seat arrangement, when the received temperature value is greater than or equal to a first threshold temperature value or when the elapsed time period is beyond a first threshold period or a combination thereof, wherein the controller is configured to turn off the blower fan, a first non-returnable valve and a rear air flow vent switch and the controller is configured to turn on the suction fan, a second non-returnable valve and a third non-returnable valve to create suction of air at the backrest area and the seat area, wherein the suction fan is configured to allow flow of air sucked in through the seat area and/or backrest area to flow into an outlet conduit and to an outside environment.

3. The method as claimed in claim 2, wherein the method comprises:
activating the second mode of operation of the seat arrangement, when the received temperature value is less than the first threshold temperature but greater than or equal to a second threshold temperature, and/or when the elapsed time period is greater than the first threshold period and less than or equal to a second threshold period, wherein the controller is configured to turn off the second non-returnable valve and the rear air flow vent switch and the controller is configured to turn on the blower fan, the suction fan, the first non-returnable valve and the third non-returnable valve to create suction at the seat area and flow of the air at the backrest area through the blower fan via the first valve through the air diffusers.
4. The method as claimed in claim 1, wherein the method comprises:
activating the third mode of operation of the seat arrangement, when the received temperature value is less than the second threshold temperature but greater than or equal to a third threshold temperature, and/or when the elapsed time period is greater than the second threshold period and less than or equal to a third threshold period, wherein the controller is configured to turn off the suction fan, the third non-returnable valve and the rear air flow vent switch and the controller is configured to turn on the blower fan, the first non-returnable valve and the second non-returnable valve to create flow of the air at the seat area and the backrest area through the blower fan via the air diffusers.
5. The method as claimed in claim 1, wherein the method comprises:
activating the fourth mode of operation of the seat arrangement, when the received temperature value is less than the third threshold temperature but greater than or equal to a fourth threshold temperature, and/or when the elapsed time period is greater than the third threshold period and less than or equal to a fourth threshold period, wherein the controller is configured to turn off the suction fan, the second non-returnable valve and the third non-returnable valve and the controller is configured to turn on the blower fan, the first non-returnable valve and the rear air flow vent switch to create flow of the air at the rear portion of the seat arrangement.

6. A system of automatically controlling temperature around a front seat arrangement (102) of a vehicle, the system comprising:
a backrest area (104) and a seat area (106) arranged pivotally to each other, wherein the backrest area (104) and the seat area (106) are coupled to a main conduit (124) comprising an elongated and hollow structure configured to allow flow of a fluid within;
a plurality of sensors (108) operatively coupled to a controller (110), wherein a first sensor (112) among the plurality of sensors detects temperature of the seat arrangement and a second sensor (114) includes a timer;
a suction fan (116), operatively coupled to the controller (110), is configured to allow air suction from the seat area (104) and/or backrest area (106) through a plurality of air diffusers to an outside environment via an outlet conduit;
a blower fan (118) operatively coupled to the controller (110) and is configured to allow air blow toward the seat area and/or backrest area (104, 106) through the air diffusers, wherein the air diffusers disposed along the transverse direction of the backrest area and the seat area (104, 106);
a plurality of non-returnable valves (120) disposed within the seat arrangements (102);
a rear air flow vent (122) coupled to the blower fan (118) through the main conduit (124) via the first valve, wherein the rear air flow vent (122) is configured to drive air flow from the blower fan (118) to the rear portion of the seat arrangement (102); and
the controller (110) configured to operatively control operations of the plurality of sensors (108), the suction fan (116), the blower fan (118), the first non-returnable, the second non-returnable, the third non-returnable (120) and the rear air flow vent (122) switch, wherein the controller (110) is configured to activate or deactivate at least the suction fan (116), the blower fan (118), the first non-returnable, the second non-returnable, the third non-returnable (120) and the rear air flow vent (122) switch based on the inputs of the plurality of sensors (108) to activate a plurality of modes (126) in synchronize manner from a first mode to a fifth mode or at least one preset or default mode of operation of the cooling of the seat arrangement (102), wherein the controller (110) has provision to get an input from an inbuilt database or via a communication protocol for geographical location and weather data.

7. The system as claimed in claim 6, wherein during a first mode of operation the controller is configured to create a suction of an air flow using the suction fan at the backrest area and the seat area of the seat arrangement, wherein during a second mode of operation the controller is configured to create a suction of air using the suction fan at the seat area and drives the air flow to the backrest area using the blower fan, wherein during a third mode of operation the controller is configured to drive the air flow to the air diffusers of the backrest area and seat area of the seat arrangement using the blower fan, wherein during a fourth mode of operation the controller is configured to drive the air flow from the blower fan to a rear air flow vent and wherein during a fifth mode of operation, the controller is configured to turn off the blower fan and the suction fan.