FORM 2
THE PATENT ACT 1970
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “AN AIR VENT OF A HEATING VENTILATION AND AIR CONDITIONING SYSTEM”
Name and address of the Applicant:
TATA MOTORS LIMITED, Bombay house, 24 Homi Mody Street, Hutatma
Chowk, Mumbai 400 001, Maharashtra, INDIA.
Nationality: Indian
The following specification particularly describes the invention the manner in which it is to be performed.

TECHNICAL FIELD
Embodiments of the present disclosure relate to a heating, ventilation and air conditioning (HVAC) system. More particularly, the disclosure relates to an air vent having a fan element to direct air in a predetermined direction.
BACKGROUND OF DISCLOSURE
Conventional heating, ventilation and air conditioning system (HVAC) consists basically of a blower unit, heat exchangers, and air vents in which blower unit sucks air from outside/ inside cabin, and blows into the conditioned space, slightly pressurizing it.
The fresh air or re-circulated air is sucked through intake assembly of the blower unit. The blower unit forces the air to move forward and gives it a velocity and momentum to move towards the heat exchanger coils. The air which is passed from the heat exchanger coils, contacts with it to dissipate or absorb heat, this conditioned air is passed through the one or more air ducts branched inside the conditioned space and ends as vent outlet. The vent outlets expel air to the conditioned space continuously. The conventional air vents generally have different geometry with number of horizontal and vertical vanes to direct air flow to the passenger. In these conventional systems, the blower unit produces more noise at higher blower speeds. The conventional automobile HVAC system has one main blower assembly which continuously expels the recirculated air/ outside air over the heat exchangers and then inside cabin. To have more airflow, the blower unit must operate at high RPMs which induce more noise.
In a tropical climate usually user increases the blower unit’s speed to increase air flow for better comfort. When the blower unit’s speed is increased, air flow through the vents diffuses with more noise. Thus the passenger does not feel air jet. In addition, both the horizontal and vertical vanes of the HVAC system are required to be adjusted to obtain the air flow in a desired direction.
In light of foregoing discussion, it is necessary to provide an air vent which provides air flow in a predetermined direction to have better human comfort.

OBJECTS OF THE DISCLOSURE
One object of the present disclosure is to provide an air vent with a fan element for directing air in a predetermined direction with higher air discharge at less blower noise.
One object of the present disclosure is to provide an air vent with a fan element to reduce complexity of using horizontal and vertical vanes for the desired air directivity.
One object of the present disclosure is to provide an air vent with a fan element for providing more air flow at less main blower speeds, resulting in energy saving
STATEMENT OF THE DISCLOSURE
Accordingly, the present disclosure provides an air vent of a heating, ventilation, and air conditioning (HVAC) system comprising an outer housing connected to opening of an air duct of the HVAC system, an inner housing mounted inside the outer housing, comprising a fan element mounted on a shaft, wherein the shaft is connected to one end of the inner housing, a knob connected to other end of the inner housing to change orientation of the inner housing, also provides a HVAC system comprising a blower unit configured to draw at least one of re-circulated air from conditioned space and air from atmosphere, a heat exchanger coil connected between the blower unit and one or more air duct to condition the air, atleast one air vent connected to a HVAC system through one or more air duct, comprising an outer housing connected to opening of air duct of the HVAC system, an inner housing mounted inside the outer housing, comprising a fan element mounted on a shaft, wherein the shaft is connected to one end of the inner housing, a knob connected to other end of the inner housing to change orientation of the inner housing and also comprises of a method for directing air using air venting device connected to a HVAC system, comprising changing position of inner housing by changing position of knob of the inner housing to direct air in a predetermined direction.
SUMMARY OF THE DISCLOSURE
The shortcomings of the prior art are overcome and additional advantages are provided through the provision of system and method as claimed in the present disclosure.

Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.
One embodiment of the present disclosure provides an air vent of a HVAC system. The air vent comprises of an outer housing and an inner housing. The outer housing is connected to opening of an air duct and the inner housing is mounted inside the outer housing such that the inner housing moves freely inside the outer housing. The inner housing comprises a fan element which is integrated to a shaft, wherein the shaft is connected to one end of the inner housing. The inner housing also comprises a knob projecting from other end of the inner housing. The fan element directs air to a predetermined direction based on position of the inner housing wherein the position of the inner housing is changed using the knob.
In one embodiment, the present disclosure provides a HVAC system. The HVAC system comprises a blower, heat exchanger coils, air ducts and air vents. The blower sucks recirculated air from a conditioned space or air from atmosphere and expels the air to the heat exchanger coil. The heat exchanger coil which is mounted between the blower unit and the air duct, conditions the air. The conditioned air is expelled towards a fan element of the air vent, wherein the fan element directs the air to a predetermined direction. The air vent comprises of an outer housing which is connected to opening of air duct of the HVAC system and an inner housing which is mounted inside the outer housing. The inner housing comprises a fan element which is integrated to a shaft, wherein the shaft is connected to one end of the inner housing. The inner housing also comprises a knob which is projecting from the other end of the inner housing. The fan element directs air to a predetermined direction based on position of the inner housing wherein the position of the inner housing is changed using the knob.
In one embodiment, the present disclosure provides a method for directing air to a predetermined direction. The method comprises changing position of inner housing by

changing position of a knob of the inner housing to direct air to a predetermined direction.
In one embodiment, the present disclosure provides a potentiometer which is connected to a fan element of the air vent to change speed of the fan element.
In one embodiment, the present disclosure provides an air vent of the HVAC system, wherein outer housing and inner housing of the air vent are mounted to form of a spherical joint.
BRIEF DESCRIPTION OF THE DRAWINGS
The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
FIG. 1 shows a schematic diagram of a HVAC system in accordance with the present disclosure.
FIG. 2 shows a sectional view of an air vent in accordance with the present disclosure.
FIGS. 3a and 3b show front view of an air vent in accordance with the present disclosure.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
Referral Numerals

Reference Number Description
100 HVAC system
101 Intake assembly
103 Blower unit
105 Flaps
109 Air duct
111 Air vent
200 Vehicle Dashboard
201 Outer housing
203 Inner housing
205 Fan element
209 Knob

211 Shaft
213 Support member
To overcome the drawbacks mentioned in the background, the present disclosure provides an air vent (111) of a HVAC system (100) as illustrated in FIG. 1. The HVAC system (100) comprises blower unit (103), flaps (105), heat exchanger coils, air ducts (109) and air vents (111). The blower (103) sucks air either from the atmosphere or recirculated air from a conditioned space through intake assembly (101). The conditioned space is defined as a compartment which is enclosing the HVAC system (100). The blower (103) expels the air towards the heat exchanger coils of the HVAC system (100). The heat exchanger coil conditions the air by allowing the air to dissipate or absorb heat in the heat exchanger coil. The heat exchanger coil expels the conditioned air to the flaps (105) for directing the conditioned air to a particular mode. The modes are chest position of a person in the conditioned space, leg position of the person in the conditioned space and the defrost mode. Upon selecting the mode, the conditioned air is passed through one or more air duct which is branched inside the conditioned space and ends as the air vent (111) outlet.
FIG. 2 is a sectional view of an air vent (111) installed in a dashboard (200) of an automotive vehicle. The air vent (111) passes air to the compartment of a user from a HVAC system (100). The air vent (111) includes an outer housing (201) which is extended inwardly towards the opening of the air duct (109) and an inner housing (203) which is mounted inside the outer housing (201) such that the inner housing (203) moves freely inside the outer housing (201). In an exemplary embodiment the inner housing (203) and the outer housing (201) are coupled to form a spherical joint as shown in FIGS.3a and 3b. FIGS.3a and 3b show front view of the air vent (111). The inner housing (203) of the air vent (111) is provided with a support member (213) at one end. A shaft is connected to the support member. The support member (213) is any supporting member which serves the purpose of holding the shaft. In one embodiment the support member is shown as a mesh in FIG.3a. In another embodiment, the support member is shown as a criss-cross bar in FIG.3b. A fan element (205) is mounted on the shaft (211) to direct air

to a predetermined direction. A knob (209) is connected to the shaft and is projected out at the other end of the inner housing. The knob (209) facilitates to change orientation of the inner housing (203). Moving the knob (209) would change the orientation of the inner housing (203). The fan element (205) expels air to a direction in which the inner housing (203) is oriented using the knob (209).
Blower (103) of the HVAC system (100) sucks air from the atmosphere or re-circulates the air from the passenger compartment and forwards the air to a heat exchanger coil. The heat exchanger coil conditions the received air by allowing the received air to either dissipate or gain heat in the heat exchanger coil. The conditioned air from the heat exchanger coil creates a rotational force when passed through the inner housing (203) which cause the fan element (205) to rotate. As the fan element (205) rotates, the conditioned air is directed to a predetermined direction by rotating the inner housing (203) using the knob (209).
In one embodiment electric power can be supplied to the fan element (205) for it to rotate. A power supply control unit like a potentiometer could be used to control the speed of rotation of the fan element (205) by controlling the power supplied to the fan element (205).
Advantages:
The air vent with a fan element for directing conditioned air to a predetermined direction produces less blower noise.
The air vent with a fan element consumes less power because of less blower speed.
The air vent with a fan element reduces complexity of using horizontal and vertical vanes for the desired air directivity.
Equivalents
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular

to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the

convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

We claim:
1. An air vent (111) of a heating ventilation and air conditioning (HVAC) system
(100) comprising:
an outer housing (201) connected to opening of an air duct (109) of the HVAC system (100);
an inner housing (203) mounted inside the outer housing (201), comprising:
a fan element (205) mounted on a shaft (211), wherein the shaft (211) is connected to one end of the inner housing (203);
a knob (209) connected to other end of the inner housing (203) to change orientation of the inner housing (203).
2. The air vent (111) as claimed in claim 1, wherein the outer housing (201) and the inner housing (203) are mounted to form of a spherical joint.
3. The air vent (111) as claimed in claim 1, wherein the fan element (205) is connected with a potentiometer to change speed of the fan element (205).
4. A heating ventilation and air conditioning system (HVAC) system (100), comprising:
a blower unit (103) configured to draw at least one of re-circulated air from a conditioned space or air from atmosphere,
a heat exchanger coil connected between the blower unit (103) and one or more air duct (109) to condition the air;
atleast one air vent (111) connected to the HVAC system (200) through one or more air duct (109), comprising:
an outer housing (201) connected to an opening of air duct (209) of the HVAC system (100);
an inner housing (203) mounted inside the outer housing (201), comprising:
a fan element (205) mounted on a shaft (211), wherein the shaft (211) is connected to one end of the inner housing (203);

a knob (209) connected to other end of the inner housing (203) to change orientation of the inner housing (203).
5. A method for directing air to a predetermined direction using an air vent connected to a heating ventilation and air conditioning (HVAC) system (100), comprising: changing position of inner housing (203) by changing position of a knob (209) of the inner housing (203) ) to direct air to a predetermined direction.