FORM-2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2006
COMPLETE SPECIFICATION
(See section 10 and rule 13)
REAR BLOWER WITH MODE SELECTION
BEHR INDIA LTD.
an Indian Company
of Gate No.626/1/2 & 622/1/0, 29th Milestone,
Pune-Nasik Highway, Village Kuruli, Taluk Khed,
Pune - 410501, Maharashtra, INDIA.
Inventors:
PARTHASARATHI GARIKIPATI SURAJ SATHYANARAYAN KULKARNI MITHUL KISHOR
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE NATURE OF THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

Field of the Disclosure:
The present disclosure generally relates to a blower for boosting air- flow in a vehicular environment. More particularly, the present disclosure relates to a blower for directing hot air or cold air towards the rear-passengers as per their requirement.
Background of the Disclosure:
Heating, Ventilation and Air Conditioning (HVAC) system refers to a technology of indoor or automotive environmental comfort. The HVAC system delivers hot or cold air to enclosed spaces such as vehicle interior or residential or commercial buildings. In order to boost air flow from the HVAC system to enclosed spaces that are to be maintained in a thermal comfort zone, various types of blowers are used. A large variety of blowers for regulating air flow inside the vehicle are available. Generally, a ducted centrifugal fan is used as a blower for use with the HVAC system of a vehicle.
However, most of the prior-art blowers direct air along a single direction. Further, most of the prior art blowers fail to efficiently regulate the flow of air inside the vehicle as per the requirements of the rear-passengers. Still further, none of the air-flow regulating means are designed keeping in mind different needs of the rear passengers. More specifically, most of the prior art blowers fail to operate at different modes and lack flexibility to change mode during operation in order to cater to different needs of the rear-passengers.

Further, most of the prior art blowers are capable of handling either only cold air or only hot air. Most of the prior art blowers are complex in construction and require a large number of moving parts and are subject to regular break-downs, thereby requiring regular maintenance.
Accordingly, there is a need for a blower for use with the HVAC system of a vehicle that can direct air towards different directions depending upon the requirements of the rear-passengers. There is a need for a blower that efficiently regulates the flow of air inside a vehicle as per the requirements of the rear-passengers. Further, there is a need for a blower that can operate at different modes and is able to change mode during the operation for catering to the different needs of the rear-passengers. Further, there is a need for a blower that receives cold air or hot air from the HVAC system and delivers the hot air or cold air to the rear-passengers as per the selected mode of the blower.
Objects of the Disclosure:
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
The main object of the present disclosure is to provide a rear blower that receives cold air or hot air from a cabin or Heating, Ventilation, and Air Conditioning (HVAC) system of a vehicle and delivers hot air or cold air to the rear-passengers as the per selected mode.

Another object of the present disclosure is to provide a rear blower that directs air in different directions depending upon the requirements of the rear-passengers.
Yet another object of the present disclosure is to provide a rear blower that efficiently regulates the flow of air inside a vehicle as per the requirements of the rear-passengers.
Another object of the present disclosure is to provide a rear blower that can operate at different modes based on the selection made by the rear-passengers.
Still another object of the present disclosure is to provide a rear blower that is user-friendly.
Yet another object of the present disclosure is to provide a rear blower that requires less maintenance.
Another object of the present disclosure is to provide a rear blower that is sturdy in construction.
Another objective of the present disclosure is to provide a rear blower that is simple in construction.
Other objects and advantages of the present disclosure will be more apparent from the following description when read in conjunction with the

accompanying figures, which are not intended to limit the scope of the present disclosure. Summary of Disclosure:
In accordance with the present disclosure, there is provided a rear blower with a mode selection means in an HVAC system for a vehicle for boosting air-flow to deliver hot or cold air to the rear-passengers according to their selected mode, said blower comprising:
- a scroll provided with means for selectively opening or closing its inlet;
- a driving means for blowing air according to the selected mode;
- a plurality of inlet openings;
- a plurality of outlet openings;
wherein, a corresponding flap is provided on said inlet and outlet openings having fluid communication with the air inside the vehicle cabin for selectively opening or closing said face or foot openings according to the selection mode selected by the rear passengers of the vehicle.
Typically, the blower comprises:
- a scroll provided with means for selectively opening or closing its inlet;
- a driving means for blowing air according to the selected mode;
- an inlet face opening;
- an inlet foot opening;
- an outlet face opening and
- an outlet foot opening;

wherein, a plurality of flaps are provided on said inlet and outlet openings having fluid communication with the air inside the vehicle cabin for selectively opening or closing said face or foot openings according to the selection mode selected by the rear passengers of the vehicle.
Typically, the scroll is a blower scroll receiving air for boosting by means of an impeller rotatably housed inside said blower scroll.
Typically, the inlet face opening is in fluid communication with the cool air of the vehicle cabin.
Typically, the inlet face flap swivels about a pivot to selectively open or close said inlet face opening according to the mode selected by the rear passengers.
Typically, the inlet foot opening is in fluid communication with the hot air from the HVAC foot vicinity area / cabin of the vehicle via an inlet foot duct.
Typically, the inlet foot flap swivels about a pivot for selectively opening or closing said inlet foot opening.
Typically, the outlet has an outlet face opening and an outlet foot opening.

Typically, the outlet face opening and said outlet foot opening are configured to be opened and closed in such a manner that on opening said outlet face opening, said outlet foot opening closes and on closing said outlet face opening, said outlet foot opening opens.
Typically, the mode selection means is provided inside the vehicle for selecting a preferred mode by the rear passengers for activating either in the face mode or in the foot mode of operation.
Typically, the mode selection means is mechanically operated.
Typically, the mode selection means is electronically operated.
Typically, the inlet face opening is in its opened configuration in the face mode and said inlet foot opening is in its closed configuration to restrain entry of hot air into said blower inlet, said outlet face opening is in its opened configuration and the outlet foot opening is in its closed configuration.
Typically, the inlet face opening is in its closed configuration in its foot mode and said inlet foot opening is in its opened configuration; said outlet face opening is in closed configuration and said outlet foot opening is in its opened configuration.

Brief Description of the Accompanying Drawings:
The rear blower in accordance with the present disclosure for directing hot air or cold air towards the rear-passengers will now be explained in more detail with reference to the non-limiting accompanying drawings in which:
Figure 1 illustrates an isometric view of a rear blower with mode selection in accordance with an embodiment of the present disclosure;
Figure 2 illustrates a schematic representation depicting arrangement of basic components of the rear blower of Figure 1;
Figure 3 illustrates a schematic representation depicting the arrangement of the basic components of the rear blower of Figure 1 in face mode, in which the rear blower directs cold air towards the face of the rear-passengers; and
Figure 4 illustrates a schematic representation depicting the arrangement of the basic components of the rear blower of Figure 1 in foot mode, in which the rear blower directs hot air towards the feet of the rear-passengers.
Detailed Description of the Accompanying Drawings:
The disclosure will now be described with reference to the accompanying drawings which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.

Referring to Figure 1 of the accompanying drawings, a rear blower 100 with mode selection in accordance with an embodiment of the present disclosure is illustrated. The rear blower 100 receives cold air from a vehicle cabin and hot air from HVAC and delivers either cold air to the face or chest of the rear passengers or hot air to the feet of the rear passenger based on the selection made by the rear passenger. More specifically, the rear blower 100 operates either in face mode in which the rear blower 100 blows cold air towards the face and chest of the rear passenger or in foot mode in which the rear blower 100 blows hot air towards the feet of the rear passenger.
Referring to Figure 2 and Figure 3 of the accompanying drawings, schematic representations depicting the basic components of the rear blower 100 are illustrated. The rear blower 100 includes a blower scroll 02, an impeller 04 housed inside the blower scroll 02, an inlet face opening 06, an inlet face flap 08, an inlet foot opening 10, an inlet foot flap 12, a inlet foot duct 14, an outlet flap 16, an outlet face opening 18 and an outlet foot opening 20. The impeller 04 is housed inside the blower scroll 02 and rotates inside the blower scroll 02 for boosting the air received in the blower scroll 02. The inlet face opening 06 is in fluid communication with the cool air of the cabin.
The inlet face flap 08 is adapted to swivel along the directions A-A' as illustrated in Figure 3, for selectively opening or closing the inlet face opening 06, thereby defining the open and closed configuration of the inlet face opening 06. In the open configuration of the inlet face opening 06, the cold air from the cabin is received in the blower scroll 02 and the cold air is boosted by the impeller 04 rotating inside the blower scroll 02. In the closed

configuration of the inlet face opening 06, the cold air from the cabin is restrained from entering inside the blower scroll 02.
The inlet foot opening 10 is in fluid communication with the hot air from the HVAC foot vicinity area or cabin area of the vehicle via the inlet foot duct 14. The inlet foot flap 12 swivels along the directions B-B' as illustrated in Figure 3, for selectively opening or closing the inlet foot opening 10, thereby defining an open and a closed configuration of the inlet foot opening 10. In the open configuration of the inlet foot opening 10 as illustrated in Figure 4, hot air from the HVAC foot vicinity area/cabin is received in the blower scroll 02 and the hot air is boosted by the impeller 04 rotating inside the blower scroll 02.
In the closed configuration of the inlet foot opening 10 as illustrated in Figure 3, the hot air from the HVAC foot vicinity area/cabin is restrained from entering inside the blower scroll 02. The outlet face opening 18 and the outlet foot opening 20 are configured such that, at one time either the outlet face opening 18 is open or the outlet foot opening 20 is open, while the other is closed. More specifically, the outlet flap 16 swivels along the C-C direction, in the first position of the outlet flap 16 as illustrated in Figure 3, the outlet foot opening 20 is closed and the outlet face opening 18 is open and in the second position of the outlet flap 16 as illustrated in Figure 4, the outlet foot opening 20 is open and the outlet face opening 18 is closed.
The opening and closing of the inlet face opening 06, inlet foot opening 10, outlet face opening 18 and the outlet foot opening 20 are based on the selections made by the rear-passengers. More specifically, the rear blower

100 functions either in a face mode or in a foot mode. In the face mode, the basic components of the rear blower 100 are arranged as illustrated in Figure 3. More specifically, in the face mode of operation of the rear blower 100, the inlet face opening 06 is in the open configuration, the inlet foot opening 10 is in the closed configuration to restrain entry of hot air into the blower inlet, the outlet face opening 18 is in the open configuration and the outlet foot opening 20 is in the closed configuration.
Due to such an arrangement of the basic components of the rear blower 100 in the face mode, the cold air from the vehicle cabin enters inside the blower scroll 02, where it is boosted by the impeller 04 and directed to the outlet face opening 18, from the outlet face opening 18 cold air is directed towards the face or chest of the rear-passengers.
Similarly, in the foot mode of operation of the rear blower 100, the inlet face opening 06 is in the closed configuration, the inlet foot opening 10 is in open configuration, the outlet face opening 18 is in the closed configuration and the outlet foot opening 20 is in the open configuration. Due to such an arrangement of the basic components of the rear blower 100 in the foot mode, hot air from the vehicle cabin enters inside the blower scroll 02, where it is boosted by the impeller 04 and is directed to the outlet foot opening 20, from the outlet foot opening 20, hot air is directed towards the feet of the rear-passengers.
The mode selection means can be operated mechanically or electronically.

Technical Advantages and economic significance:
The technical advantages of the present disclosure include the following:
In accordance with an embodiment of the present disclosure there is provided a rear blower that receives cold air or hot air from the cabin or Heating, Ventilation, and Air Conditioning (HVAC) system of a vehicle and delivers the hot air or cold air to the rear-passengers as per their selected mode.
The rear blower directs air towards different directions depending upon the requirements of the rear-passengers. The rear blower efficiently regulates the flow, of air inside the vehicle as per the requirements of the rear-passengers. The rear blower operates at different modes based on the selection made by the rear-passengers. The rear blower is user-friendly and requires less maintenance. The rear blower is sturdy and simple in construction.
Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.

Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the various components of the preferred embodiment and the interrelationships between the component parts of the preferred embodiment, it will be appreciated that many alterations can be made and that many modifications can be made in the preferred embodiment without departing from the principles of this disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation of the scope of the present disclosure.

We claim:
1. A rear blower with a mode selection means in an HVAC system for a
vehicle for boosting air-flow to deliver hot or cold air to the rear-
passengers according to their selected mode, said blower comprising:
- A scroll provided with means for selectively opening or closing its inlet;
- A driving means for blowing air according to the selected mode;
- A plurality of inlet openings;
- A plurality of outlet openings;
wherein, a corresponding flap is provided on said inlet and outlet openings having fluid communication with the air inside the vehicle cabin for selectively opening or closing said face or foot openings according to the selection mode selected by the rear passengers of the vehicle.
2. A rear blower with a mode selection means in an HVAC system for a
vehicle for boosting air-flow to deliver hot or cold air to the rear-
passengers according to their selected mode, said blower comprising:
- A scroll provided with means for selectively opening or closing its inlet;
- A driving means for blowing air according to the selected mode;
- An inlet face opening;
- An inlet foot opening;
- An outlet face opening and

- An outlet foot opening;
wherein, a plurality of flaps are provided on said inlet and outlet
openings having fluid communication with the air inside the vehicle
cabin for selectively opening or closing said face or foot openings
according to the selection mode selected by the rear passengers of the
vehicle.
3. Rear blower with a mode selection means as claimed in claim 1, wherein said scroll is a blower scroll receiving air for boosting by means of an impeller rotatably housed inside said blower scroll.
4. Rear blower with a mode selection means as claimed in claim 1, wherein said inlet face opening is in fluid communication with the cool air of the vehicle cabin.
5. Rear blower with a mode selection means as claimed in claim 1, wherein said inlet face flap swivels about a pivot to selectively open or close said inlet face opening according to the mode selected by the rear passengers.
6. Rear blower with a mode selection means as claimed in claim 1, wherein said inlet foot opening is in fluid communication with the hot air from the HVAC foot vicinity area / cabin of the vehicle via an inlet foot duct.

7. Rear blower with a mode selection means as claimed in claim 1, wherein said inlet foot flap swivels about a pivot for selectively opening or closing said inlet foot opening.
8. Rear blower with a mode selection means as claimed in claim 1, wherein said outlet has an outlet face opening and an outlet foot opening.
9. Rear blower with a mode selection means as claimed in claim 1, wherein said outlet face opening and said outlet foot opening are configured to be opened and closed in such a manner that on opening said outlet face opening, said outlet foot opening closes and on closing said outlet face opening, said outlet foot opening opens.
10. Rear blower with a mode selection means, wherein said mode
selection means is provided inside the vehicle for selecting a preferred
mode by the rear passengers for activating either in the face mode or
in the foot mode of operation.
11. Rear blower with a mode selection means, wherein said mode
selection means is mechanically operated.
12. Rear blower with a mode selection means, wherein said mode
selection means is electronically operated.

13. Rear blower with a mode selection as claimed in claim 1, wherein in face mode, said inlet face opening is in its opened configuration and said inlet foot opening is in its closed configuration to restrain entry of hot air into said blower inlet, said outlet face opening is in its opened configuration and the outlet foot opening is in its closed configuration.
14. Rear blower with a mode selection as claimed in claim 1, wherein in foot mode, said inlet face opening is in its closed configuration and said inlet foot opening is in its opened configuration; said outlet face opening is in closed configuration and said outlet foot opening is in its opened configuration.