JP2014180985A - Vehicle air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air conditioning system capable of realizing comfortable zone air conditioning even during heating or cooling without securing a duct installation space in a vehicle cabin.SOLUTION: A vehicle air conditioning system 10 according to the present invention comprises: a heat exchange unit that transforms air vacuumed into a draft air duct 22 by a blower 26 to desired conditioned air and that blows the conditioned air into a vehicle cabin 2 from a defroster diffuser 31; vent diffusers 32a and 32b; and foot diffusers 33a and 33b. At least one diffuser is connected to the draft air duct 22 upstream of the blower 26 in the draft air duct 22, and functions as an air inlet absorbing the conditioned air blown from the other diffusers.

Description

  The present invention relates to a vehicle air conditioning system that preferentially air-conditions a passenger's surroundings.

  Conventionally, as an air conditioning system for vehicles that air-conditions the entire interior of a vehicle, conditioned air that has been exchanged with the heat exchanger by passing outside air or inside air through a heat exchanger provided in an air passage in the instrument panel using a blower. Are blown into the passenger compartment from the outlet (def outlet, vent outlet and foot outlet).

  By the way, in recent years, in order to reduce the air conditioning load of the vehicle air conditioning system and realize energy saving, the conditioned air blown into the passenger compartment can be circulated in the front seat (driver's seat or front passenger seat) as much as possible. It is desired.

  Therefore, a technique (hereinafter, referred to as “first conventional example”) is disclosed in which the conditioned air blown out from the vent outlet into the vehicle compartment is sucked through a foot side suction port provided near the feet of the front seat (for example, Patent Document 1). reference). In this first conventional example, air-conditioning wind passes from the upper body to the lower body of the occupant and is sucked from the foot side suction port, thereby preferentially and intensively air-conditioning the surrounding area on the front seat side, thereby providing comfortable zone air conditioning. realizable.

  In addition, air-conditioning air blown into the vehicle compartment from each air outlet (a diff air outlet, a vent air outlet, and a foot air outlet) is sucked in a lower seat suction port provided on the lower side of the front seat (hereinafter referred to as “No. 2 conventional example) is also disclosed (see, for example, Patent Document 2). In the second conventional example, the conditioned air always passes through the lower body of the occupant and is sucked from the under-seat suction port, so that the zone air conditioning can be realized as in the first conventional example.

JP 2006-282080 A JP 2011-225117 A

  However, in the first conventional example described above, when the conditioned air is blown from the vent outlet into the vehicle compartment, zone air conditioning can be realized, but when the conditioned air is blown from the foot outlet into the room (for example, during heating). Since no suction port is provided on the upper body side of the occupant, zone air conditioning cannot be realized.

  On the other hand, in the second conventional example described above, since the conditioned air always passes through the lower body of the occupant, zone air-conditioning can be realized even during heating or cooling, but the under-seat suction port is provided below the front seat. Therefore, it is necessary to provide a duct from the air passage in the instrument panel to the lower side of the front seat, and it is necessary to secure a space for installing the duct in the passenger compartment.

  Accordingly, the present invention has been made to solve the above-described problems, and can realize comfortable zone air-conditioning even during heating or cooling without securing a space for installing a duct in the vehicle interior. The purpose is to provide an air conditioning system.

  In order to solve the above-described problems, the present invention has the following features. First, a first feature of the present invention is an air conditioning system for a vehicle that converts air sucked into a blower passage by a blower into a desired conditioned air by a heat exchange unit and blows out the air from a plurality of outlets toward a vehicle interior. The gist of the invention is that at least one of the air outlets is connected to an upstream side of the air blower in the air passage and functions as a suction port for sucking in the conditioned air blown out from the other air outlets.

  As another feature, the air duct is provided with a main body duct provided from the downstream side to the suction port from the heat exchange unit and a turn duct extending from the main body duct to the upstream side from the blower. Preferably, a first switching means for switching a passage route of the conditioned air to either the main body duct or the turn duct is provided at a branch portion between the main body duct and the turn duct.

  As another feature, it is preferable that a second switching unit that switches circulation of the conditioned air that has passed through the turn duct to the air passage is provided in a communication portion between the turn duct and the air passage.

  As another feature, the main body duct branches into a driver seat side and a passenger seat side, and the air-conditioning wind toward the driver seat side or the passenger seat side is provided at a branch portion between the driver seat side and the passenger seat side. It is preferable that the 3rd switching means which switches the flow of is provided.

  As another feature, it is preferable that the air outlet is a foot air outlet, and the suction port is a vent air outlet or a differential air outlet.

  As another feature, it is preferable that the air outlet is a vent air outlet, and the suction port is the foot air outlet.

  According to the characteristic of this invention, at least 1 blower outlet is connected to the upstream of the air blower of a ventilation path, and functions as a suction inlet which sucks in the air-conditioning wind blown out from the other blower outlet. For example, in the case of heating, the conditioned air is blown out from the air outlet provided on the lower side, and the air conditioned air is sucked in from the air outlet provided on the upper side. On the other hand, in the case of cooling, the conditioned air is blown out from the air outlet provided on the upper side, and the air conditioned air is sucked in from the air outlet provided on the lower side. As described above, comfortable zone air-conditioning can be realized even during heating or cooling without securing the installation space for the duct in the vehicle interior.

FIG. 1 is a schematic side view showing the vehicle air conditioning system according to the first embodiment. FIG. 2 is a schematic plan view showing the vehicle air conditioning system according to the first embodiment. FIG. 3 is a schematic configuration diagram in a side view of the vehicle air conditioning system according to the first embodiment. FIG. 4 is a schematic configuration diagram in plan view of the vehicle air conditioning system according to the first embodiment. FIG. 5 is a schematic configuration diagram of a vehicle air conditioning system according to a modification of the first embodiment. FIG. 6 is a schematic configuration diagram of a vehicle air conditioning system according to the second embodiment. FIG. 7 is a schematic configuration diagram of a vehicle air conditioning system according to the third embodiment. FIG. 8 is a schematic configuration diagram in plan view of the vehicle air conditioning system according to the fourth embodiment. FIG. 9 is a schematic configuration diagram of a vehicle air-conditioning system according to the fourth embodiment.

  Next, an embodiment of a vehicle air conditioning system according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

[First Embodiment]
(Configuration of vehicle air conditioning system)
First, the configuration of the vehicle air conditioning system 10 according to the first embodiment will be described with reference to the drawings. FIG. 1 is a schematic side view showing an air conditioning system 10 for a vehicle according to a first embodiment. FIG. 2 is a schematic plan view showing the vehicle air conditioning system 10 according to the first embodiment. FIG. 3 is a schematic configuration diagram in a side view of the vehicle air conditioning system 10 according to the first embodiment. FIG. 4 is a schematic configuration diagram in plan view of the vehicle air conditioning system 10 according to the first embodiment.

  As shown in FIGS. 1 and 2, the vehicle air conditioning system 10 is provided in an instrument panel 3 provided in the foremost part of the vehicle compartment 2 of the vehicle 1. In the passenger compartment 2, two front seats (driver seat and front passenger seat) 4 and one long rear seat 5 are provided.

  As shown in FIGS. 1 to 3, such a vehicle air conditioning system 10 includes an air conditioner 20 that supplies desired conditioned air into the passenger compartment 2, and an operation panel that operates the air conditioner 20 ( (Not shown) and a control unit (not shown) for controlling each part and performing various calculations.

  The air conditioner 20 includes an air conditioning unit 21 disposed inside the instrument panel 3. As shown in FIG. 3, an air passage 22 is formed in the air conditioning unit 21. In the uppermost stream of the air passage 22, an outside air introduction port 23 that introduces outside air that is air outside the passenger compartment 2 and an inside air introduction that is provided below the seat 4 and introduces inside air that is air inside the passenger compartment 2. A mouth 24 is provided. The outside air introduction port 23 and the inside air introduction port 24 are opened and closed by an intake door 25. The inside air introduction port 24 is connected to a foot side suction port 24A (see FIGS. 1 and 2) provided near the feet of the front seat.

  A blower 26 is provided in the air passage 22 to suck in the inside air and the outside air into the air passage 22 by the rotation of the fan. On the downstream side of the blower 26, an evaporator 27 and a heater core 28, which are heat exchange units, are arranged in this order, and a mix door 29 is provided between the evaporator 27 and the heater core 28.

  The evaporator 27 is a cooling source for blowing air. The evaporator 27 is arranged so that all the air passing through the air passage 22 passes through, and cools the air. The heater core 28 is a heat source for blowing air. The heater core 28 is disposed in a substantially half region of the air passage 22 and heats the air. The mix door 29 adjusts the ratio of the airflow that flows through the heater core 28 and the airflow that bypasses the heater core 28. Air conditioning air at a desired temperature is produced based on this air volume ratio.

  An air conditioning outlet 30 for blowing conditioned air into the passenger compartment 2 is provided downstream of the heater core 28. The air conditioning outlet 30 includes a defroster outlet 31 that blows conditioned air toward the windshield WS, vent vents 32a and 32b that blow conditioned air toward the upper body of each occupant on the driver seat side and the passenger seat side, And foot outlets 33a and 33b) for blowing conditioned air toward the lower body of each occupant on the driver side and passenger side.

  The defroster outlet 31 is opened and closed by a differential door 34, the vent outlets 32a and 32b are opened and closed by a vent door 35 as a first switching means, and the foot outlets 33a and 33b are opened and closed by a foot door 36. Among these defroster outlet 31, vent outlets 32a and 32b, and foot outlets 33a and 33b, at least one air conditioning outlet 30 is connected to the upstream side of the blower 26 in the air passage 22, and other air conditioners. It also functions as a suction port for sucking the conditioned air blown into the vehicle compartment 2 from the air outlet 30. In the first embodiment, it is assumed that the vent outlets 32a and 32b function as suction ports.

  The blower 26 includes a differential duct 40 that extends from the blower passage 22 downstream of the heat exchange unit (evaporator 27 and heater core 28) to the defroster blowout port 31, and a vent blower port 32a from the blower passage 22 downstream of the heat exchange unit. , 32b and a vent duct 41 (main body duct) are provided.

  A turn duct 42 is connected to the vent duct 41 toward the air passage 22 on the upstream side of the blower 26. The connecting portion between the vent duct 41 and the turn duct 42 is provided with the above-described vent door 35 (see FIG. 3) that switches the passage route of the conditioned air to either the vent duct 41 or the turn duct 42. The vent duct 41 is branched into the driver seat side and the passenger seat side of the front seat 4. A seat switching door 43 (see FIG. 4) is provided at a branching portion between the driver seat side and the passenger seat side as third switching means for switching the flow of conditioned air to the driver seat side or the passenger seat side.

  An operation panel (not shown) can command various air conditioning states. On the operation panel, it is possible to select overall air conditioning that air-conditions the entire interior of the vehicle compartment 2 and zone air conditioning that preferentially air-conditions the space of the front seat 4 in the vehicle interior 2.

  The control unit controls the air conditioner 20 according to a command from an operation panel (not shown) and the like, and various doors (the intake door 25, the mix door 29, the differential door 34, the vent door 35, the foot door 36, and the seat switching door 43). Control switching. For example, when the entire air conditioning is selected by the operation panel (not shown), the control unit stops the function as the suction port of the vent outlets 32a and 32b. On the other hand, when the zone air conditioning that preferentially air-conditions the front seat space in the passenger compartment 2 is selected by the operation panel, the control unit starts the function as the suction port of the vent outlets 32a and 32b. Specific switching contents will be described later.

(Operation of air conditioning system for vehicles)
Next, the operation of the vehicle air conditioning system 10 according to the first embodiment will be described with reference to FIG.

  As shown in FIG. 3, when the air conditioner 20 is driven, air is sucked into the air passage 22 from the outside air inlet 23 and the inside air inlet 24 by the blower 26. The sucked air is conditioned air at a desired temperature by the evaporator 27 and the heater core 28, and the conditioned air flows from the at least one defroster outlet 31, vent outlets 32 a and 32 b, and foot outlets 33 a and 33 b into the vehicle compartment 2. It is blown out inside. In the first embodiment, the vent outlets 32a and 32b also function as suction ports.

(Overall air conditioning mode)
In the overall air conditioning mode, the vent outlets 32a and 32b do not function as suction ports, and the defroster outlet 31, vent outlets 32a and 32b, or foot outlets 33a and 33b function as outlets. Therefore, the conditioned air blown out from the air conditioner 20 into the passenger compartment 2 flows to almost the entire area of the passenger compartment 2, and the entire interior of the passenger compartment 2 is air-conditioned.

(Zone air conditioning mode)
As zone air-conditioning modes, a vent blow mode (so-called mode often used during cooling) that blows conditioned air from the vent blow ports 32a and 32b, and a foot blow mode (so-called heating) that blows conditioned air from the foot blow ports 33a and 33b. Frequently used mode).

  In the vent blowing mode (inside air circulation mode), the vent door 35 is set to the open position and the foot door 36 is set to the closed position. In addition, by switching the position of the seat switching door 43, it is possible to vary the ventilation of the conditioned air to the driver seat side or the passenger seat side of the seat 4 of the front seat. For example, when an occupant is only in the driver's seat, zone air conditioning can be performed only on the driver's seat side by closing the vent outlet door 32b on the passenger seat side.

  In this vent blowing mode, the conditioned air blown into the passenger compartment 2 intensively passes around the front seat 4 (mainly the height of the occupant's upper body) and blows from the foot side suction port 24A. The air is sucked in by the suction force and returned to the air conditioning unit 21. As a result, the conditioned air is prevented from flowing into the space of the seat 5 in the rear seat as much as possible, and a zone air-conditioning region is formed in the seat 4 in the front seat in the passenger compartment 2.

  On the other hand, in the foot blowing mode, the foot door 36 is in the open position and the vent door 35 is in the closed position. In addition, by switching the position of the seat switching door 43, it is possible to vary the ventilation of the conditioned air to the driver seat side or the passenger seat side of the seat 4 of the front seat. For example, when the occupant is only in the driver's seat, the zone air conditioning can be performed only on the driver's seat side by closing the foot outlet 33b on the passenger seat side.

  In this foot blowing mode, the conditioned air blown into the passenger compartment 2 intensively passes around the front seat 4 (mainly the height of the lower body of the occupant) and blowers from the vent outlets 32a and 32b. 26 is sucked in by the suction force 26 and returned to the air conditioning unit 21 via the turn duct 42. As a result, the conditioned air is prevented from flowing into the space of the seat 5 in the rear seat as much as possible, and a zone air-conditioning region is formed in the seat 4 in the front seat in the passenger compartment 2.

(Action / Effect)
According to the first embodiment described above, at least one air conditioning outlet 30 of the defroster outlet 31, the vent outlets 32a and 32b, and the foot outlets 33a and 33b is more than the blower 26 of the air passage 22. It is connected to the upstream side and functions also as a suction port for sucking in the conditioned air blown into the vehicle compartment 2 from the other air conditioning outlet 30. In the first embodiment, the vent outlets 32a and 32b also function as suction ports. Thereby, in the case of heating, conditioned air is blown out from the foot outlets 33a and 33b, and conditioned air is sucked in from the vent outlets 32a and 32b. On the other hand, in the case of cooling, the conditioned air is blown out from the vent outlets 32a and 32b, and the conditioned air is sucked in from the foot side suction port 24A. As described above, comfortable zone air-conditioning can be realized even during heating or cooling without securing a duct installation space in the passenger compartment 2.

  In particular, during zone air-conditioning, air-conditioning air in the passenger compartment 2 is used, so that power saving of the heater core 28 and the like can be realized, and the front seat 4 can be quickly cooled and heated. In addition, a feeling of cooling and a feeling of heating around the steering wheel is promoted along with the realization of comfortable zone air conditioning.

  In the first embodiment, a vent door 35 is provided at a connection portion between the vent duct 41 and the turn duct 42. Thus, by switching the vent door 35, the vent outlets 32a and 32b function as outlets during cooling (valve and outlet mode), and vent outlets during heating (foot outlet mode). 32a and 32b function as suction ports. For this reason, the passage path of the conditioned air can be switched to either the vent duct 41 or the turn duct 42 with only the vent door 35. Further, it is not necessary to separately provide a suction port dedicated to the suction on the upper side of the passenger compartment 2 and to secure a space for installing the suction port dedicated to the suction.

  In the first embodiment, the vent duct 41 is branched into a driver seat side and a passenger seat side of the seat 4 of the front seat, and a seat switching door that switches between the driver seat side and the passenger seat side is provided at the branch portion. 43 is provided. Thereby, when the occupant is only in the driver's seat, zone air conditioning can be performed only on the driver's seat side, and power saving of the heater core 28 and the like can be further realized.

(Example of change)
Next, a modified example of the vehicle air conditioning system 10 according to the first embodiment described above will be described with reference to the drawings. FIG. 5 is a schematic configuration diagram of a vehicle air conditioning system 10 according to a modification of the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as the vehicle air conditioning system 10 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

  In the first embodiment described above, the duct closing door 42 </ b> A is not provided at the communication portion between the turn duct 42 and the air passage 22. On the other hand, in the modified example, as shown in FIG. 5, in the communication portion between the turn duct 42 and the air passage 22, the second air conditioner air that has passed through the turn duct 42 is switched to the air passage 22. A duct closing door 42A as a switching means is provided.

  In such a modification, the circulation of the conditioned air to the air passage 22 can be switched by providing the duct closing door 42 </ b> A at the communication portion between the turn duct 42 and the air passage 22. That is, the conditioned air can be reliably prevented from circulating from the turn duct 42 to the air passage 22. In this case, the amount of air distribution from the vent outlets 32a and 32b and the like can be easily performed in the same way as in the existing control during heating, in the middle of heating and cooling (bilevel), or in the differential foot mode.

[Second Embodiment]
Below, the air conditioning system 10 for vehicles which concerns on 2nd Embodiment is demonstrated, referring drawings. FIG. 6 is a schematic configuration diagram of the vehicle air conditioning system 10 according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same part as the vehicle air conditioning system 10 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

  In 1st Embodiment mentioned above, vent blower outlet 32a, 32b functions as a suction inlet in foot blowing mode. On the other hand, in 2nd Embodiment, the defroster outlet 31 functions as a suction inlet in foot blowing mode.

  Specifically, as shown in FIG. 6, the defroster outlet 31 blows conditioned air into the vehicle compartment during the defroster blowout mode or the differential / foot blowout mode, and from the foot blowout openings 33a and 33b during the foot blowout mode. It also functions as a suction port for sucking in the conditioned air blown into the chamber 2.

  The differential duct 40 is connected to a turn duct 43 that is directed to the air passage 22 upstream of the blower 26. A differential door 34 that switches the passage route of the conditioned air to either the differential duct 40 or the turn duct 42 is provided at a connection portion between the differential duct 40 and the turn duct 42.

  Next, operation | movement of the air conditioning system 10 for vehicles which concerns on 2nd Embodiment is demonstrated easily, referring FIG. Note that the vent air blowing mode of the overall air conditioning mode and the zone air conditioning mode is the same as that of the first embodiment described above, and thus the description thereof is omitted here.

  In the foot blowing mode, the foot door 36 is in the open position, and the differential door 34 and the vent door 35 are in the closed position. In this foot blowing mode, the conditioned air blown into the passenger compartment 2 intensively passes around the front seat 4 (mainly the height of the occupant's lower body) from the defroster outlet 31 to the blower 26. The air is sucked by the suction force and returned to the air conditioning unit 21 via the turn duct 43. As a result, the conditioned air is prevented from flowing into the space of the seat 5 in the rear seat as much as possible, and a zone air-conditioning region is formed in the seat 4 in the front seat in the passenger compartment 2.

  According to the second embodiment described above, the defroster outlet 31 also functions as a suction inlet. Thereby, in the case of heating, the conditioned air is blown out from the foot outlets 33a and 33b, and the conditioned air is sucked in from the defroster outlet 31. In this case, the flow of the conditioned air along the windshield WS can be produced, and the effect of preventing the windshield WS from being fogged is also produced. In addition, since the warm air on the upper body side of the occupant is also sucked from the defroster outlet 31, the comfort for the occupant is further improved.

  Here, in the second embodiment, as in the first embodiment described above, the differential duct 40 is branched to the driver seat side and the passenger seat side of the front seat 4, A seat switching door (not shown) for switching between the seat side and the passenger seat side may be provided.

  Moreover, in 2nd Embodiment, like the example of a change of 1st Embodiment mentioned above, the communication part of the turn duct 43 and the ventilation path 22 is connected to the ventilation path 22 of the conditioned wind which passed the inside of the turn duct 43. Second switching means (not shown) for switching circulation may be provided.

[Third Embodiment]
Below, the air conditioning system 10 for vehicles which concerns on 3rd Embodiment is demonstrated, referring drawings. FIG. 7 is a schematic configuration diagram of a vehicle air conditioning system 10 according to the third embodiment. In addition, the same code | symbol is attached | subjected to the same part as the vehicle air conditioning system 10 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

  In the first embodiment described above, the foot side suction port 24A functions as a suction port in the vent blowing mode. On the other hand, in 3rd Embodiment, the foot blower outlets 33a and 33b function as a suction inlet at the vent blowout mode.

  Specifically, as shown in FIG. 7, the foot outlets 33a and 33b blow out the conditioned air into the vehicle compartment in the foot outlet mode, while entering the vehicle compartment 2 from the vent outlets 32a and 32b in the vent outlet mode. It also functions as a suction port that sucks in the blown air-conditioning air.

  The blower 26 is provided with a foot duct 44 from the blower passage 22 on the downstream side of the heat exchanging section (evaporator 27 and heater core 28) toward the foot outlets 33a and 33b. The foot duct 44 is connected to a turn duct 45 directed toward the air passage 22 on the upstream side of the blower 26. At the connection between the foot duct 44 and the turn duct 45, a foot door 36 for switching the passage route of the conditioned air to either the foot duct 44 or the turn duct 45 is provided.

  Next, operation | movement of the air conditioning system 10 for vehicles which concerns on 3rd Embodiment is demonstrated easily, referring FIG. Note that the overall air conditioning mode and the zone air conditioning mode foot blowing mode are the same as those in the first embodiment described above, and a description thereof will be omitted.

  In the vent blowing mode, the vent door 35 is in the open position, and the differential door 34 and the foot door 36 are in the closed position. In this vent blowing mode, the conditioned air blown into the passenger compartment 2 intensively passes around the front seat 4 (mainly the height of the upper body of the occupant) and blowers from the foot outlets 33a and 33b. 26 is sucked by the suction force 26 and returned to the air conditioning unit 21 via the turn duct 45. As a result, the conditioned air is prevented from flowing into the space of the seat 5 in the rear seat as much as possible, and a zone air-conditioning region is formed in the seat 4 in the front seat in the passenger compartment 2.

  According to the third embodiment described above, since the foot outlets 33a and 33b also function as the inlets in the vent outlet mode, the inside air circulation can be realized without providing the foot side inlets 24A.

  Here, in the third embodiment, as in the first embodiment described above, the foot duct 44 is branched into the driver seat side and the passenger seat side of the seat 4 of the front seat, A seat switching door (not shown) for switching between the driver seat side and the passenger seat side may be provided.

  Moreover, in 3rd Embodiment, like the example of a change of 1st Embodiment mentioned above, the circulation part to the ventilation path 22 of the air conditioned wind which passed the turn duct 45 is made into the communication part of the turn duct 45 and the ventilation path 22. FIG. There may be provided second switching means (not shown) for switching between the two.

[Fourth Embodiment]
Below, the air conditioning system 10 for vehicles which concerns on 4th Embodiment is demonstrated, referring drawings. FIG. 8 is a schematic configuration diagram in plan view of the vehicle air conditioning system 10 according to the fourth embodiment. FIG. 9 is a schematic configuration diagram of a vehicle air conditioning system 10 according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the same part as the vehicle air conditioning system 10 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

  In the first embodiment described above, the vent duct 41 is branched into the driver seat side and the passenger seat side, and the seat switching door 43 is provided at this branch portion. On the other hand, in 4th Embodiment, as shown in FIG. 8, the vent duct 41 does not branch to the driver's seat side and the passenger seat side, and the vent duct 41 is provided only on the driver's seat side. That is, as shown in FIG. 9A, the vent outlets 32a and 32b function as the outlet and the inlet on the driver's seat side, and the vent outlet on the passenger seat side as shown in FIG. 9B. The outlets 32a and 32b function only as normal outlets.

  According to the fourth embodiment described above, since the vent duct 41 is provided only on the driver's seat side, zone air conditioning can be performed only on the driver's seat side, and power saving of the heater core 28 and the like can be further realized.

  Here, in the fourth embodiment, as in the first embodiment, the vent outlets 32a and 32b have been described as functioning as suction ports. However, the present invention is not limited to this, for example, the second embodiment. As described above, the defroster outlet 31 may function as a suction port, and the foot outlets 33a and 33b may function as suction ports as in the third embodiment.

[Other Embodiments]
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the vehicle air conditioning system 10 is not limited to those described in each embodiment or modification, and the items described in each embodiment or modification are merely examples, and each component May be combined. The vehicle air conditioning system 10 has been described as being heated or cooled in the passenger compartment 2. However, the present invention is not limited to this, and heating and heating in the passenger compartment 2 may be performed depending on the opening / closing position of each door. Needless to say, the present invention can also be applied to an intermediate state (bilevel) with cooling.

  As described above, the present invention naturally includes various embodiments that are not described here, as well as a combination of the first to fourth embodiments. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Cabin 10 ... Air conditioning system for vehicles 22 ... Air blower 26 ... Blower 27 ... Evaporator (heat exchange part)
28 ... Heater core (heat exchanger)
30 ... Air-conditioning outlet 31 ... Defroster outlet 32a, 32b ... Vent outlet 33a, 33b ... Foot outlet 34 ... Differential door (first switching means)
35 ... Vent door (first switching means)
36 ... Foot door (first switching means)
40 ... Differential duct (Body duct)
41 ... Vent duct (body duct)
42 ... Turn duct 42A ... Duct closing door (second switching means)
43 ... Turn duct 43 ... Seat switching door (third switching means)
44 ... Foot duct (body duct)
45 ... Turn duct

Claims (6)

The air sucked into the air passage (22) by the blower (26) is converted into desired conditioned air by the heat exchanging section (28, 29), and the vehicle is sent from the plurality of outlets (31, 32a, 32b, 33a, 33b). A vehicle air conditioning system (10) that blows out into the chamber (2),
At least one of the air outlets (31, 32a, 32b, 33a, 33b) is connected to the upstream side of the blower in the air passage (26), and the other air outlets (31, 32a, 32b, 33a, 33. A vehicle air conditioning system (10), which functions as a suction port for sucking in the conditioned air blown from 33b). A vehicle air conditioning system (10) according to claim 1,
The air duct (22) has a main duct (40, 41, 44) provided toward the suction port (31, 32a, 32b, 33a, 33b) from the downstream side of the heat exchange part (28, 29). And a turn duct (42, 43, 45) extending from the main body duct (40, 41, 44) to the upstream side of the blower (26),
At the branch part of the main body duct (40, 41, 44) and the turn duct (42, 43, 45), the main body duct (40, 41, 44) and the turn duct (42, 43, 45) The vehicle air conditioning system (10), characterized in that a first switching means (34, 35, 36) for switching a passage route of the conditioned air is provided in any of them. A vehicle air conditioning system (10) according to claim 2,
The communicating portion between the turn duct (42, 43, 45) and the air passage (22) is connected to the air passage (22) of the conditioned air that has passed through the turn duct (42, 43, 45). A vehicle air conditioning system (10) characterized in that second switching means (42A) for switching circulation is provided. A vehicle air conditioning system (10) according to claim 2 or claim 3,
The main body duct (41, 44) branches to the driver side and the passenger side,
The vehicle is characterized in that a third switching means (43) for switching the flow of the conditioned air to the driver seat side or the passenger seat side is provided at a branch portion between the driver seat side and the passenger seat side. Air conditioning system (10). A vehicle air conditioning system (10) according to any one of claims 1 to 4,
The air outlet is a foot outlet (33a, 33b), and the inlet is a vent outlet (32a, 32b) or a differential outlet (31). ). A vehicle air conditioning system (10) according to any one of claims 1 to 5,
The vehicle air conditioning system (10), wherein the air outlet is a vent air outlet (32a, 32b), and the suction port is the foot air outlet (33a, 33b).

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