JP7309324B2 - vehicle air conditioning system - Google Patents

Description

The present invention relates to vehicle air conditioning systems.

For example, in a vehicle such as a small electric vehicle, it is required to reduce the power consumed by an air conditioner for cooling the cabin in order to ensure a sufficient mileage. In such a case, it is preferable to perform zonal air conditioning in which cooled air is supplied intensively to a specific portion of the cabin, such as the surroundings of the passengers seated in the seats, rather than the entire cabin. As a vehicle air-conditioning system that performs zone air-conditioning, for example, the one described in Patent Document 1 is known.

In this vehicle air conditioning system, air (cooling air) cooled by an air conditioner arranged inside the instrument panel is blown into the cabin from an outlet provided in the instrument panel. The air supplied to the cabin in this way is sucked into the duct through the air intake provided in the seat. A duct passes through the interior of the seat and under the floor of the cabin to communicate the air inlet and the air conditioner. Therefore, the cooling air supplied to the cabin from the air outlet is collected by the air conditioner through the duct from the air inlet, cooled again, and then supplied to the cabin from the air outlet. As a result, zone air conditioning is performed in which cooling air is intensively supplied between the air outlet and the air inlet of the cabin while air is circulated.

JP 2013-216110 A

As described above, when a duct communicating between the air inlet and the air conditioner is provided in order to collect the cooling air after being supplied to the cabin to the air conditioner, a space for arranging the duct is required. The vehicle air conditioning system will be enlarged. In addition, since the ducts are arranged through the interior of the seat and under the floor of the cabin, the adjustment mechanism for adjusting the front-rear position of the seat, the inclination angle of the seatback, and the like becomes complicated.

Furthermore, since it is necessary to compensate for ventilation resistance (pressure loss) that occurs when air passes through the duct, there is a concern that the size of the blower that circulates the air inside the duct will increase. In this case, especially in a vehicle air-conditioning system having an air-conditioning device provided on the roof of the vehicle, there is a problem that the height of the vehicle and the height of the center of gravity of the vehicle tend to increase.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle air-conditioning system capable of efficiently performing zone air-conditioning by circulating the air in the cabin with a compact and simple configuration. and

To achieve the above object, the present invention provides a vehicle air conditioning system comprising an air conditioner installed on the roof of the vehicle and a circulation device installed in the cabin of the vehicle, wherein the air conditioner is installed above the cabin. An air conditioning intake communicating with a cabin, an air conditioning outlet communicating with the cabin in front of the vehicle from the air conditioning intake in the upper part of the cabin, and an air conditioning communicating path provided between the air conditioning intake and the air conditioning outlet. and an evaporator and an air-conditioning blower provided inside the air-conditioning communication passage, and the air-conditioning device is provided to blow air from above and in front of the vehicle toward an occupant seated in the seat. The air-conditioning blower takes in the air in the cabin from the air-conditioning inlet into the air-conditioning communication passage, and blows the air cooled by the evaporator in the air-conditioning communication passage to the cabin from the air-conditioning outlet . A circulation intake that communicates with the cabin on the downstream side of the air blown out from the air conditioning intake, and a circulation outlet that communicates with the cabin on the upstream side of the air taken in by the air conditioning intake and behind the circulation intake. a circulation communication passage provided between the circulation inlet and the circulation outlet; and a circulation blower provided inside the circulation communication passage, wherein the circulation fan extends from the air conditioning outlet toward the circulation inlet. The air blown from the circulation outlet is taken into the circulation communication passage and blown from the circulation outlet toward the air conditioning intake, and the air conditioning blower blows the air from the circulation outlet toward the air conditioning intake. It is characterized in that air is taken into the air-conditioning communication passage and blown from the air-conditioning outlet toward the circulation intake.

In the air conditioner of this vehicle air conditioning system, the air (cooling air) cooled by the evaporator inside the air conditioning communication passage is blown from the air conditioning outlet toward the circulation intake of the circulation device. As a result, cooling air is intensively supplied between the air-conditioning outlet and the circulation intake of the cabin, and zone air-conditioning can be performed efficiently.

Further, in the circulation device, the air taken into the circulation communication passage from the circulation intake is blown from the circulation outlet toward the air conditioning intake. Since the circulation outlet and the air conditioning intake both communicate with the cabin, the air blown out from the circulation outlet is blown through the cabin toward the air conditioning intake without passing through a duct, etc. taken into the aisle. The air collected by the air conditioner in this way is cooled again by the evaporator and then supplied to the cabin through the air conditioning outlet.

Therefore, in this vehicle air-conditioning system, for example, it is possible to eliminate the need for a complicated duct structure or the like for taking in the air blown out from the air-conditioning outlet into the air-conditioning intake and circulating the air. Therefore, with a simple configuration in which air is blown by the circulation device, the air in the cabin can be well circulated, and the efficiency of zone air conditioning can be further improved.

In addition, the vehicle air-conditioning system can be made smaller by eliminating the need for a space for installing the duct and by eliminating the need for a large blower for circulating air in the duct while compensating for ventilation resistance. .

As described above, according to this vehicle air conditioning system, it is possible to efficiently perform zone air conditioning by circulating the air in the cabin with a small and simple configuration. Since the vehicle air conditioning system can be miniaturized in this way, it is possible to avoid an increase in the height of the vehicle and the height of the center of gravity of the vehicle even if the air conditioner is installed on the roof of the vehicle. Also, as mentioned above, the circulation device can circulate the air by blowing air inside the cabin. do not have.

That is, this vehicle air conditioning system can be provided in a vehicle without complicating the adjustment mechanism for adjusting the front and rear positions of the seat and the inclination angle of the seat back. In other words, it is possible to easily adjust the front and rear position of the seat and the tilt angle of the seat back while efficiently performing zone air conditioning by the vehicle air conditioning system. Therefore, zonal air conditioning can be performed easily and satisfactorily regardless of individual differences among passengers.

In the vehicle air conditioning system described above, the circulation device is preferably provided in the seat. In this case, without increasing the space occupied by the vehicle air conditioning system in the cabin, it is possible to effectively generate a flow of cooling air around the occupant seated on the seat, thereby improving the efficiency of the zone air conditioning. Furthermore, even if the front and rear positions of the seat and the tilt angle of the seat back are adjusted, the positional relationship between the occupant seated on the seat and the circulation inlet can be kept substantially constant. Zone air conditioning can be performed well.

In the vehicle air-conditioning system described above, the circulation intake is preferably provided in the seat. For example, if a circulation intake is provided on the side facing the occupant of the seat, air is taken in from the circulation intake between the passenger and the seat, where heat is relatively likely to accumulate, so that the occupant can enjoy the effects of zone air conditioning. It is possible to feel better.
In the vehicle air conditioning system described above, it is preferable that the circulation inlet is provided on the backrest surface of the seat back of the seat.
In the vehicle air conditioning system described above, it is preferable that the circulation outlet is provided on the back side of the seat back.
In the vehicle air-conditioning system described above, it is preferable that the circulation outlet is covered with a louver-shaped portion so as to allow ventilation.
In the vehicle air-conditioning system described above, it is preferable that the air-conditioning inlet is provided above and behind an occupant seated on the seat.
It is preferable that the vehicle air conditioning system further includes a traveling air passage located above the vehicle relative to the air conditioning communication passage and allowing traveling air to pass from the front to the rear of the vehicle.

The present invention is a vehicle air conditioning system comprising an air conditioner installed on the roof of a vehicle and a circulation system installed in a cabin of the vehicle, wherein the air conditioner communicates with the cabin above the cabin. an air-conditioning outlet that communicates with the cabin in front of the vehicle from the air-conditioning intake in the upper part of the cabin; and an air-conditioning communication passage that is provided between the air-conditioning intake and the air-conditioning outlet. and an evaporator and an air-conditioning blower provided inside the air-conditioning communication passage, wherein the air-conditioning blower takes in the air of the cabin from the air-conditioning inlet into the air-conditioning communication passage, and the inside of the air-conditioning communication passage. The air cooled by the evaporator is blown out from the air conditioning outlet to the cabin, and the circulation device includes a circulation inlet communicating with the cabin on the downstream side of the air blown out from the air conditioning outlet. a circulation outlet communicating with the cabin on the upstream side of the air taken into the air conditioning intake; a circulation communication passage provided between the circulation intake and the circulation outlet; a circulation blower provided inside, wherein the circulation blower takes in the air blown from the air conditioning outlet toward the circulation intake into the circulation communication passage, and releases the air from the circulation outlet. In the vehicle air conditioning system, the air conditioner blows air from above and in front of the vehicle toward the passenger seated in the seat, and the circulation device is the interior panel on the side of the seat. and an exterior panel, the circulation inlet is provided in the interior panel on the side of the seat and opens toward the seat, and the circulation outlet is provided in the seat It is characterized by being provided on the side interior panel and opening upward . In this case, without increasing the space occupied by the vehicle air conditioning system in the cabin, it is possible to effectively generate a flow of cooling air around the occupant seated on the seat, thereby improving the efficiency of the zone air conditioning.

In the vehicle air conditioning system described above, the circulation device may be provided behind the vehicle door or may be provided at the vehicle door.

In the vehicle air-conditioning system described above, it is preferable that either one of the air-conditioning fan and the circulation fan operate in conjunction so as to achieve an operating state corresponding to the operating state of the other. In this case, the volume of air blown out from the air conditioning outlet and the volume of air taken in from the air conditioning intake and the volume of air taken in from the circulation intake and the volume of air blown out from the circulation outlet are of sizes corresponding to each other. As a result, it is possible to circulate the air in the cabin well.

Advantageous Effects of Invention According to the vehicle air conditioning system of the present invention, zone air conditioning can be efficiently performed by circulating the air in the cabin with a small and simple configuration.

1 is a schematic configuration diagram of a vehicle air conditioning system according to a first embodiment of the present invention; FIG. FIG. 2 is a block explanatory diagram of the vehicle air conditioning system of FIG. 1; FIG. 2 is a partial cross-sectional view of a seat provided with a circulation device of the vehicle air conditioning system of FIG. 1; FIG. 7 is a schematic configuration diagram of a principal portion of a circulation device of a vehicle air conditioning system according to a second embodiment of the present invention; FIG. 11 is a schematic configuration diagram of a principal portion of a circulation device of a vehicle air conditioning system according to a third embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a vehicle air-conditioning system according to the present invention will be described in detail with reference to preferred embodiments and with reference to the accompanying drawings. In the drawings below, constituent elements having the same or similar functions and effects are denoted by the same reference numerals, and repeated description may be omitted.

As shown in FIG. 1, a vehicle air-conditioning system 10 according to the first embodiment of the present invention includes an air-conditioning device 16 provided on a roof 14 of a vehicle 12 and a circulation device 20 provided on a cabin 18 of the vehicle 12. , and a control device 22 (see FIG. 2) for controlling the air conditioner 16 and the circulation device 20 . Suitable examples of the vehicle 12 to which the vehicle air conditioning system 10 is applied include a small electric vehicle (MEV: Micro Electric Vehicle), etc., but the vehicle is not particularly limited to this. In the following, the front-rear and up-down directions will be described according to the directions of the arrows shown in FIG. 1 and the like. "Forward" is the traveling direction of the vehicle 12, and "backward" is the opposite direction.

The air conditioner 16 includes an air-conditioned ceiling 24, an air-conditioned intake port 26, an air-conditioned outlet 28, an air-conditioned communication passage 32 formed by a partition wall 30, a refrigerating cycle device 34, an air-conditioned fan 36, and a roof fan 38. Mainly provide The air-conditioned ceiling 24 covers at least a portion of the roof 14 while being spaced apart from the roof 14 and partition wall 30 at a predetermined distance. As a result, between the air-conditioned ceiling 24 and the roof 14 and the partition wall 30, a running wind passage 40 is formed through which the running wind passes from the front to the rear of the vehicle 12. As shown in FIG. Between the air-conditioning ceiling 24 and the roof 14, an air flow inlet 42 is formed at the front end side in the front-rear direction, and an air flow outlet 44 is formed at the rear end side in the front-rear direction.

The air conditioning intake 26 communicates with the cabin 18 at the top of the cabin 18 . The position where the air conditioning intake 26 is provided is preferably near the head PH of the occupant P seated on the seat 46 of the vehicle 12 and behind the head PH. The air conditioning outlet 28 communicates with the cabin 18 ahead of the air conditioning intake 26 in the upper part of the cabin 18 . The position where the air conditioning outlet 28 is provided is preferably in the vicinity of the head PH of the occupant P seated on the seat 46 and in front of the head PH.

An air-conditioning inlet 26 is provided at the rear end of the air-conditioning communication passage 32, and an air-conditioning outlet 28 is provided at the front end. That is, the air conditioning communication passage 32 communicates with the cabin 18 via the air conditioning outlet 28 and the air conditioning intake 26 . The partition wall 30 is made of a heat insulating material and insulates the inside and outside of the air conditioning communication passage 32 .

Inside the air conditioning communication passage 32, an air conditioning blower 36 and an evaporator 48 constituting a refrigeration cycle device 34 as described later are provided. The air-conditioning blower 36 takes in the air in the cabin 18 from the air-conditioning inlet 26 into the air-conditioning communication passage 32, and cools the air in the air-conditioning communication passage 32 by the evaporator 48 (hereinafter also referred to as cooling air). It blows out from the outlet 28 into the cabin 18 .

The refrigerating cycle device 34 has a configuration in which a compressor 50, a condenser 52, an expansion valve (not shown), and an evaporator 48 are sequentially connected via a refrigerant pipe 54 (see FIG. 2). are provided in the running air passage 40 or in the cabin 18 . The compressor 50 is arranged on the rear side of the vehicle 12 relative to the air conditioning communication passage 32 and compresses the refrigerant. The condenser 52 is arranged on the rear side of the vehicle 12 relative to the air-conditioning communication passage 32 and the compressor 50, and cools and liquefies the refrigerant compressed by the compressor 50 by exchanging heat with the running wind or the like. The expansion valve reduces the pressure of the liquefied refrigerant to adiabatically expand it.

Since the evaporator 48 is arranged in the air conditioning communication passage 32 as described above, it is arranged on the front side of the vehicle 12 relative to the condenser 52 . The evaporator 48 also cools the air by exchanging heat between the refrigerant whose temperature has passed through the expansion valve and the air in the cabin 18 taken into the air conditioning communication passage 32 .

The roof blower 38 is arranged, for example, in the vicinity of the outlet 44 in the running air passage 40 . Further, by driving the roof blower 38 while the vehicle 12 is running, the running wind can be circulated in the running wind passage 40 more favorably. Further, by driving the roof blower 38 while the vehicle 12 is stopped, outside air can be taken in and circulated in the traveling air passage 40 . The roof blower 38 may be disposed at any position as long as it is possible to promote the circulation of the running wind or the outside air in the running wind passage 40. may be placed in Further, when the roof blower 38 is arranged in the vicinity of the outlet 44 in the running wind passage 40, the running wind or the outside air taken into the running wind passage 40 may be discharged toward the rear of the vehicle 12. , may flow out toward the top of the vehicle 12 . Additionally, the air conditioner 16 may not include the roof blower 38 .

As shown in FIG. 3 , the circulation device 20 includes a circulation inlet 56 , a circulation outlet 58 , a circulation communication passage 60 and a circulation blower 62 . The circulation inlet 56 is provided in the backrest surface 64a of the seat back 64 of the seat 46. As shown in FIG. Specifically, the seat back 64 includes a base material 66 and a skin material 68 covering the backrest surface 64a side of the base material 66, and the circulation inlet 56 is provided on the backrest surface 64a side of the base material 66. It is an opening that has been A portion of the skin material 68 that covers the circulation intake port 56 is formed as a ventilation portion 68a from a material having ventilation properties such as mesh fabric, for example.

As described above, the air cooled in the air-conditioning communication passage 32 is blown out into the cabin 18 from the air-conditioning outlet 28 facing upward and forward of the occupant P seated on the seat 46 (see FIG. 1). A circulation intake port 56 provided in the backrest surface 64 a of the bag 64 communicates with the cabin 18 on the downstream side of the air blown out from the air conditioning outlet 28 .

The circulation outlet 58 is provided on the back surface 64a of the seat back 64 on the back surface 64b side. Specifically, the circulation outlet 58 is an opening provided on the back surface 64 b side of the base material 66 . The circulation outlet 58 may be covered with a louver-shaped portion (not shown) so as to allow ventilation.

As described above, since the air conditioning intake 26 is provided above and behind the occupant P seated on the seat 46 (see FIG. 1), the circulation outlet 58 provided on the back surface 64b side of the seat back 64 is It communicates with the cabin 18 on the upstream side of the air taken into the inlet 26 .

The circulation communication path 60 is provided inside the seat back 64 between the circulation inlet 56 and the circulation outlet 58 . The circulation fan 62 is provided inside the circulation communication passage 60 . The circulation blower 62 is composed of, for example, a sirocco fan or the like, and although not shown in detail, the air is fed through the circulation intake port 56 by utilizing the centrifugal force acting on the air by the impeller rotating inside the fan casing. The air sucked into the circulation communication passage 60 is pressurized and discharged from the circulation outlet 58 . As shown in FIG. 1, the circulation blower 62 takes in the air blown from the air-conditioning outlet 28 toward the circulation intake 56 into the circulation communication passage 60, and passes the air from the circulation outlet 58 to the air-conditioning intake 26. blow toward

As shown in FIG. 2 , the control device 22 includes a control section 70 , an operation panel 72 , an air conditioning fan driver 74 , a circulation fan driver 76 and a temperature sensor 78 . The control unit 70 is composed of a well-known microcomputer including a CPU, ROM, RAM, etc., and its peripheral circuits, stores a program for air conditioning control in the ROM, and performs various calculations and processes based on the program. I do. A detection signal from the temperature sensor 78 and various operation signals from the operation panel 72 are input to the control unit 70 .

The temperature sensor 78 is arranged near the air conditioning outlet 28 of the cabin 18 and detects the temperature of the cooling air blown out from the air conditioning blower 28 by the air conditioning blower 36 . The operation panel 72 is provided, for example, near the instrument panel 80 (see FIG. 1) of the vehicle 12, and has on/off switches, mode selection switches (none of which are shown), and the like.

For example, when the crew member P operates an on/off switch, an operation signal for switching between starting and stopping the supply of cooling air to the cabin 18 is input to the control unit 70 . Also, for example, the passenger P operates the mode selection switch to operate a weak mode that minimizes the amount of cooling air, a strong mode that maximizes the amount of cooling air, a medium mode that is intermediate between the weak mode and the strong mode, and a detection signal of the temperature sensor 78. By selecting an auto mode or the like for automatically adjusting the air volume of the cooling air based on , operation signals corresponding to various modes are input to the control unit 70 .

Based on the detection signal from the temperature sensor 78 and the operation signal from the operation panel 72, the control unit 70 outputs a refrigeration cycle control signal, an air conditioning fan control signal, a circulation fan control signal, and the like. Based on the refrigerating cycle control signal, the compressor 50, the expansion valve, etc. of the refrigerating cycle device 34 are controlled. As a result, the refrigerant circulation amount of the refrigeration cycle device 34 and the like are adjusted, so the temperature of the evaporator 48 is adjusted. As a result, the temperature of the cooling air cooled by heat exchange with the evaporator 48 is adjusted.

An air-conditioning fan driver 74 that drives the electric motor of the air-conditioning fan 36 is controlled based on the air-conditioning fan control signal. As a result, the operating state (rotation amount, air blow amount) of the air conditioning blower 36 is adjusted. A circulation fan driver 76 that drives the electric motor of the circulation fan 62 is controlled based on the circulation fan control signal. Thereby, the operating state of the circulation fan 62 is adjusted.

For example, when the controller 70 outputs an air-conditioning fan control signal to control the operating state of the air-conditioning fan 36, the control unit 70 controls the circulation fan 62 so that the operating state corresponds to the operating state of the air-conditioning fan 36. Outputs the blower control signal. Conversely, when the operating state of the circulation fan 62 is controlled by the circulation fan control signal, the control unit 70 controls the air conditioning fan so that the operating state corresponds to the operating state of the circulation fan 62. 36 may output an air conditioning blower control signal.

This allows the air conditioning blower 36 and the circulation blower 62 to operate in conjunction with each other. For this reason, for example, when the amount of rotation of the electric motor of the air-conditioning blower 36 is increased to increase the amount of air blown out from the air-conditioning outlet 28 and air taken in from the air-conditioning intake 26, , the amount of rotation of the electric motor of the circulation blower 62 also increases, and the amount of air taken in from the circulation intake port 56 and air blown out from the circulation outlet 58 also increases.

The vehicle air conditioning system 10 according to the first embodiment is basically configured as described above. Next, operation of the vehicle air conditioning system 10 will be described.

For example, when the occupant P operates the on/off switch of the operation panel 72 and an operation signal for starting cooling of the cabin 18 by the vehicle air conditioning system 10 is input to the control unit 70 , the control unit 70 causes the refrigeration cycle device 34 to operate. Outputs a cycle control signal. As a result, the refrigerating cycle device 34 is driven to change the state of the refrigerant while circulating it in the refrigerant pipe 54 as described above.

Further, the control unit 70 outputs an air-conditioning fan control signal to the air-conditioning fan driver 74 to drive the air-conditioning fan 36, and outputs a circulation fan control signal to the circulation fan driver 76 to drive the circulation fan 62. By driving the air conditioning blower 36 , the air in the cabin 18 is taken into the air conditioning communication passage 32 through the air conditioning intake port 26 . After being cooled by heat exchange with the evaporator 48 in the air conditioning communication passage 32, the air is blown out from the air conditioning outlet 28 and flows through the cabin 18 through a circulating intake provided on the backrest surface 64a of the seat back 64. Air is blown toward the inlet 56 . That is, the cooling air is supplied from the front side toward the occupant P seated on the seat 46 .

Also, on the side of the backrest surface 64 a of the seat back 64 , a suction force is generated to draw air from the circulation intake port 56 into the circulation communication passage 60 under the action of the circulation blower 62 . Therefore, the air and the like that have been blown from the air conditioning outlet 28 and have cooled the occupant P are drawn into the circulation communication passage 60 from the circulation inlet 56 via the ventilation portion 68 a of the skin material 68 . Then, the air taken into the circulation communication passage 60 is blown out from the circulation outlet 58 provided in the back surface 64b of the seat back 64 in a pressurized state under the action of the circulation blower 62, and the inside of the cabin 18 is Air is blown toward an air conditioning intake 26 provided above the cabin 18 .

Under the action of the air-conditioning blower 36 , a suction force for sucking air from the air-conditioning intake 26 into the air-conditioning communication passage 32 is also generated in the vicinity of the air-conditioning intake 26 . Therefore, the air blown from the circulation outlet 58 is taken into the air-conditioning communication passage 32 from the air-conditioning inlet 26, cooled again by heat exchange with the evaporator 48, and then sent from the air-conditioning outlet 28 to the cabin 18. is blown out. That is, the air in the cabin 18 can be circulated while being cooled by the vehicle air conditioning system 10 .

At this time, when the vehicle 12 is running, the running wind flows through the running wind passage 40 from the front side to the rear side of the vehicle 12 . Further, even when the vehicle 12 is stopped, by driving the roof blower 38, outside air can be taken into the traveling air passage 40 from the front side to the rear side of the vehicle 12 and circulated. .

As a result, in the air passage 40, the partition wall 30 disposed on the upstream side receives the wind, such as the wind, so that the air-conditioning communication passage 32 is prevented from being affected by solar radiation and heat from the condenser 52. can. In addition, the air-conditioning ceiling 24 can block solar radiation, and the air layer provided between the air-conditioning ceiling 24 and the partition wall 30 suppresses the heat of the solar radiation from being transmitted to the air-conditioning communication passage 32 and the like. can. As a result, even if the air conditioner 16 is installed on the roof 14 of the vehicle 12, it is possible to effectively suppress the temperature rise of the air in the evaporator 48 and the air conditioning communication passage 32, so that the cooling efficiency of the cabin 18 is improved. can be maintained.

As described above, in the air conditioner 16 of the vehicle air conditioning system 10 according to the first embodiment, the cooling air cooled by the evaporator 48 inside the air conditioning communication passage 32 is supplied from the air conditioning outlet 28 to the circulation intake port 56 of the circulation device 20. By blowing air toward the air conditioning outlet 28 of the cabin 18 and the circulating intake 56, cooling air can be intensively supplied to the occupant P, and zone air conditioning can be performed efficiently.

Also, the air blown out from the circulation outlet 58 is blown through the interior of the cabin 18 toward the air conditioning intake 26 without passing through a duct or the like, and is collected in the air conditioning communication passage 32 . That is, in the vehicle air-conditioning system 10, for example, a complicated duct structure for taking the air blown out from the air-conditioning outlet 28 back into the air-conditioning intake 26 and circulating it can be eliminated. Therefore, with a simple configuration in which air is blown by the circulation device 20, the air in the cabin 18 can be satisfactorily circulated, and the zone air conditioning can be made more efficient.

In addition, the vehicle air-conditioning system 10 can be made smaller by eliminating the need for a space for arranging the duct and eliminating the need for a large blower for circulating air in the duct while compensating for ventilation resistance. can be

Therefore, according to the vehicle air-conditioning system 10, it is possible to circulate the air in the cabin 18 with a small and simple configuration, and to efficiently perform zone air-conditioning. Since the vehicle air conditioning system 10 can be downsized in this way, even if the air conditioner 16 is provided on the roof 14 of the vehicle 12, it is possible to avoid an increase in the height of the vehicle 12 and the height of the center of gravity.

In addition, as described above, the circulation device 20 can circulate air by blowing air inside the cabin 18. Therefore, unlike the case where a duct is provided, the front and rear positions of the seat 46 and the inclination angle of the seat back 64 can be adjusted. There is no concern that it will interfere with That is, the vehicle air-conditioning system 10 can be provided in the vehicle 12 without complicating the adjustment mechanism (not shown) for adjusting the front-rear position of the seat 46 and the inclination angle of the seat back 64 . In other words, the longitudinal position of the seat 46 and the inclination angle of the seat back 64 can be easily adjusted while efficiently performing zone air conditioning by the vehicle air conditioning system 10 . Therefore, zonal air conditioning can be performed easily and satisfactorily regardless of the individual differences of the occupants P.

As described above, in the vehicle air conditioning system 10, the air conditioning device 16 blows out cooling air from above and in front of the cabin 18 toward the passenger P seated on the seat 46, and the circulation device 20 operates the seat back 64 of the seat 46. It was decided to be provided inside the In this case, without increasing the space occupied by the vehicle air conditioning system 10 in the cabin 18, cooling air flow is effectively generated around the passenger P seated on the seat 46 to improve the efficiency of the zone air conditioning. can be done.

Furthermore, even if the fore-and-aft position of the seat 46 and the inclination angle of the seat back 64 are adjusted, the positional relationship between the occupant P seated on the seat 46 and the circulation inlet 56 can be kept substantially constant. Zone air conditioning can be performed satisfactorily regardless of individual differences. Note that the circulation device 20 may be provided not only on the seat back 64 of the seat 46 but also on the seat cushion 82 .

As described above, in the vehicle air-conditioning system 10, the circulation intake port 56 is provided on the backrest surface 64a of the seat back 64, in other words, on the side facing the occupant P. In this case, air is taken in from the circulation intake port 56 provided between the seat 46 and the occupant P, who tend to accumulate heat relatively easily, so that the occupant P can feel the effects of zone air conditioning even better. become. Note that the circulation inlet 56 may be provided not only on the backrest surface 64a but also on the back surface 64b of the seat back 64, the seat surface 82a of the seat cushion 82, or the like.

As described above, in the vehicle air-conditioning system 10, either one of the air-conditioning blower 36 and the circulation blower 62 is operated interlockingly so as to achieve an operating state corresponding to the operating state of the other. In this case, the volume of air blown out from the air conditioning outlet 28 and the volume of air taken in from the air conditioning intake 26 and the volume of air taken in from the circulation intake 56 and the volume of air blown out from the circulation outlet 58 are A corresponding dimension allows good circulation of the air in the cabin 18 .

Next, a vehicle air conditioning system 90 according to a second embodiment will be described with reference to FIG. In this vehicle air conditioning system 90, instead of the seat 46, the circulation device 20 is provided between the interior panel 92 and the exterior panel 94 on the side of the seat 46 and behind the door 12a of the vehicle 12. Except for this, it is configured in the same manner as the vehicle air conditioning system 10 according to the first embodiment.

Specifically, in the vehicle air conditioning system 90 , an interior panel 92 on the side of the seat 46 is provided with a circulation inlet 96 that opens toward the seat 46 side. The circulation inlet 96 may be covered with a louver-shaped portion 96a so as to allow ventilation. A circulation outlet 98 that opens upward is provided in the interior panel 92 on the side of the seat 46 . The circulation outlet 98 may be covered with a louver-shaped portion 98a so as to allow ventilation. A circulation communication path 100 is provided between the interior panel 92 and the exterior panel 94 so as to communicate with the circulation inlet 96 and the circulation outlet 98, and the circulation fan 62 is provided in the circulation communication path 100. It is

The circulation inlet 96 communicates with the cabin 18 on the downstream side of the air blown out from the air conditioning outlet 28 (see FIG. 1), and the circulation outlet 98 is taken into the air conditioning inlet 26 (see FIG. 1). It communicates with the cabin 18 on the upstream side of the air. Therefore, the circulation blower 62 takes in the air blown from the air-conditioning outlet 28 toward the circulation intake 96 into the circulation communication passage 100 and directs the air from the circulation outlet 98 toward the air-conditioning intake 26 . to blow air.

Similarly to the vehicle air conditioning system 10, the vehicle air conditioning system 90 configured as described above can also circulate the air in the cabin 18 with a small and simple configuration to efficiently perform zone air conditioning. Also, without increasing the space occupied by the vehicle air conditioning system 90 in the cabin 18, it is possible to effectively generate a flow of cooling air around the occupant P seated on the seat 46, thereby improving the efficiency of the zone air conditioning. can.

Next, a vehicle air conditioning system 110 according to a third embodiment will be described with reference to FIG. This vehicle air conditioning system 110 is provided with a circulation device 20 instead of the seat 46 between an interior panel 92 and an exterior panel 94 constituting the door 12a of the vehicle 12 on the side of the seat 46. , is configured in the same manner as the vehicle air conditioning system 10 according to the first embodiment.

Specifically, in the vehicle air conditioning system 110, an interior panel 92 forming the door 12a is provided with a circulation inlet 112 that opens toward the seat 46 side. The circulation inlet 112 may be covered with a louver-shaped portion 112a so as to allow ventilation. An interior panel 92 forming the door 12a is provided with a circulation outlet 114 that opens upward. The circulation outlet 114 may be covered with a louver-shaped portion 114a so as to allow ventilation. A circulation communication path 116 is provided between the interior panel 92 and the exterior panel 94 so as to communicate with the circulation inlet 112 and the circulation outlet 114, and the circulation fan 62 is provided in the circulation communication path 116. It is

The circulation inlet 112 communicates with the cabin 18 on the downstream side of the air blown out from the air conditioning outlet 28 (see FIG. 1), and the circulation outlet 114 is taken into the air conditioning inlet 26 (see FIG. 1). It communicates with the cabin 18 on the upstream side of the air. Therefore, the circulation blower 62 takes in the air blown from the air-conditioning outlet 28 toward the circulation intake 112 into the circulation communication passage 116 and directs the air from the circulation outlet 114 toward the air-conditioning intake 26 . to blow

Similarly to the vehicle air conditioning system 10, the vehicle air conditioning system 110 configured as described above can circulate the air in the cabin 18 with a small and simple configuration to efficiently perform zone air conditioning. Also, without increasing the space occupied by the vehicle air conditioning system 110 in the cabin 18, it is possible to effectively generate cooling air flow around the occupant P seated on the seat 46, thereby improving the efficiency of the zone air conditioning. can.

The present invention is not particularly limited to the above-described embodiments, and various modifications are possible without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 10, 90, 110... Vehicle air-conditioning system 12... Vehicle 12a... Door 14... Roof 16... Air conditioner 18... Cabin 20... Circulation apparatus 22... Control apparatus 32... Air-conditioning communication path 34... Refrigeration-cycle apparatus 36... Air-conditioning blower 46... Seat 48 Evaporator 56, 96, 112 Circulation inlet 58, 98, 114 Circulation outlet 60, 100, 116 Circulation communication path 62 Circulation blower 64 Seat back 92 Interior panel 94 Exterior panel

Claims (12)

A vehicle air conditioning system comprising an air conditioner provided on the roof of the vehicle and a circulation device provided in the cabin of the vehicle,
The air conditioner includes an air-conditioning inlet that communicates with the cabin above the cabin, an air-conditioning outlet that communicates with the cabin ahead of the vehicle from the air-conditioning inlet above the cabin, and the air-conditioning unit. An air-conditioning communication passage provided between an air intake and the air-conditioning outlet, and an evaporator and an air-conditioning fan provided inside the air-conditioning communication passage,
The air conditioner is provided to blow air from above and in front of the vehicle toward an occupant seated on the seat,
The air-conditioning blower takes in air in the cabin from the air-conditioning inlet into the air-conditioning communication passage, and blows the air cooled by the evaporator in the air-conditioning communication passage from the air-conditioning outlet into the cabin,
The circulation device includes a circulation inlet communicating with the cabin on the downstream side of the air blown out from the air conditioning outlet, and an upstream side of the air taken in by the air conditioning inlet from the circulation inlet. a circulation outlet communicating with the cabin at the rear of the vehicle, a circulation communication passage provided between the circulation intake and the circulation outlet, and a circulation blower provided inside the circulation communication passage. have
The circulation fan takes in the air blown from the air conditioning outlet toward the circulation intake into the circulation communication path and blows the air from the circulation outlet toward the air conditioning intake,
The air-conditioning blower takes in the air blown from the circulation outlet toward the air-conditioning intake into the air-conditioning communication passage and blows the air from the air-conditioning outlet toward the circulation intake. A vehicle air conditioning system characterized by: The vehicle air conditioning system of claim 1 ,
The vehicle air conditioning system, wherein the circulation device is provided in the seat. In the vehicle air conditioning system according to claim 1 or 2,
A vehicle air conditioning system, wherein the circulation intake is provided in a seat. In the vehicle air conditioning system according to claim 3,
A vehicle air conditioning system, wherein the circulation inlet is provided on a backrest surface of a seat back of the seat. In the vehicle air conditioning system according to claim 4,
The vehicle air conditioning system, wherein the circulation outlet is provided on the back side of the seat back. In the vehicle air conditioning system according to claim 5,
The vehicle air-conditioning system, wherein the circulation outlet is covered with a louver-shaped portion so as to allow ventilation. In the vehicle air conditioning system according to any one of claims 2 to 6,
A vehicle air-conditioning system, wherein the air-conditioning inlet is provided above and behind an occupant seated on the seat. In the vehicle air conditioning system according to any one of claims 1 to 7,
A vehicle air-conditioning system, further comprising: a travel-air passage positioned above the vehicle relative to the air-conditioning communication passage for passing travel-air from the front to the rear of the vehicle. A vehicle air conditioning system comprising an air conditioner provided on the roof of the vehicle and a circulation device provided in the cabin of the vehicle,
The air conditioner includes an air-conditioning inlet that communicates with the cabin above the cabin, an air-conditioning outlet that communicates with the cabin ahead of the vehicle from the air-conditioning inlet above the cabin, and the air-conditioning unit. An air-conditioning communication passage provided between an air intake and the air-conditioning outlet, and an evaporator and an air-conditioning fan provided inside the air-conditioning communication passage,
The air-conditioning blower takes in air in the cabin from the air-conditioning inlet into the air-conditioning communication passage, and blows the air cooled by the evaporator in the air-conditioning communication passage from the air-conditioning outlet into the cabin,
The circulation device includes a circulation inlet communicating with the cabin on the downstream side of the air blown out from the air conditioning outlet, and a circulation inlet communicating with the cabin on the upstream side of the air taken in by the air conditioning inlet. a blower outlet, a circulation communication path provided between the circulation inlet and the circulation outlet, and a circulation fan provided inside the circulation communication path,
The circulation fan takes in the air blown from the air conditioning outlet toward the circulation intake into the circulation communication path and blows the air from the circulation outlet toward the air conditioning intake,
The air conditioner blows the air from above and in front of the vehicle toward an occupant seated on the seat,
The circulation device is provided between an interior panel and an exterior panel on the side of the seat,
The circulation intake is provided in the interior panel on the side of the seat and opens toward the seat,
The vehicle air conditioning system, wherein the circulation outlet is provided in the interior panel on the side of the seat and opens upward. In the vehicle air conditioning system according to claim 9,
The vehicle air conditioning system, wherein the circulation device is provided behind a door of the vehicle. In the vehicle air conditioning system according to claim 9,
The vehicle air conditioning system, wherein the circulation device is provided at a door of the vehicle. In the vehicle air conditioning system according to any one of claims 1 to 11,
A vehicle air conditioning system, wherein either one of the air conditioning blower and the circulation blower operates in conjunction with each other so as to achieve an operating state corresponding to the operating state of the other.

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