JPH11342731A - Car air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote a reduction in the trouble and cost of assemblage, a decrease in watt consumption due to the use of an air current, the effective utilization of a solar cell, any prevention of a battery capacity drop in time of car traveling or any possible capacity drop in a heat pump unit being composed of having a refrigerant circuit. SOLUTION: This device surrounds a heat slinger 107 with a solar panel 102, forming a ventilation flue 120, and an air current to be produced in time of car running is made so as to be blown through the ventilation flue 120 in the car longitudinal direction. In addition, the charging of a battery is also carried out by the solar panel 102. Moreover, in time of generating a generator in a car running state, power is made so as to be switched to the generator from the solar panel 102 or battery. Further, at the time of a car stoppage, cooling or heating in a cabin is carried out by a thermoelectric type heat pump unit 100, and at the time of car running, the cooling or heating in the cabin by this thermoelectric type heat pump unit 100 is made so as to be carried out as a help of the heat pump unit being composed of having a refrigerant circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner provided with a thermoelectric heat pump device having a Peltier element.

[0002]

2. Description of the Related Art A vehicle is provided with a vehicle air conditioner (so-called car air conditioner) for performing air conditioning such as cooling and heating in a vehicle cabin. As a very common vehicle air conditioner, a vehicle air conditioner having a refrigerant circuit having a compressor, a heat exchanger, and the like, and a heat pump device having a heat source as a heating source by conducting cooling water of an engine to a heater core. Are known. Further, there is also known an air conditioner for a vehicle including a heat pump device that enables switching of a flow path of a refrigerant in the refrigerant circuit and performs cooling and heating in the refrigerant circuit itself.

At present, not only a vehicle air conditioner having such a heat pump device having a refrigerant circuit but also a vehicle air conditioner having a thermoelectric heat pump device having a Peltier element are considered. Have been. The Peltier element is a thermoelectric element utilizing the Peltier effect, as is well known, and has a configuration as shown in FIG. Fig. 5 is an excerpt from Electrothermal Engineering (P141) published by the Institute of Electrical Engineers of Japan (first edition published on February 20, 1984 (second revised edition)).

[0005] As shown in FIG.
Means that a pn junction is formed by an n-type semiconductor ₃ such as Bi ₂ Te ₃ and a p-type semiconductor 4, and when a DC current flows from the left to the right in the figure, the current flows from the n-type semiconductor 3 to the p-type Endotherm occurs at the junction 5 flowing in the p-type semiconductor 4, heat dissipation occurs at the junction 6 flowing from the p-type semiconductor 4 to the n-type semiconductor 3, and when current flows in the opposite direction, heat absorption and junction occurs at the junction 6. Point 5
When heat is removed from the junction 5 or 6 on the heat radiation side by water or other methods, heat absorption at the junction 6 or 5 on the heat absorption side proceeds.
When the junctions are stacked as in the Peltier element 3 shown in FIG. 5B, the low-temperature junction absorbs the heat of the high-temperature junction and the cooling proceeds.

An example of a vehicle air conditioner equipped with a thermoelectric heat pump device having such a Peltier element is disclosed in Japanese Patent Application Laid-Open No. Hei 8-11517.

[0006] In this vehicle air conditioner, even when the vehicle interior is heated by blowing out warm air from a foot air outlet of a car air conditioner in winter, the vehicle interior floor does not become warm. The problem of not being able to warm up from the back, and if the vehicle is parked for a long time under the hot summer weather, the interior of the vehicle gets quite hot, so not only is it uncomfortable when the occupant gets into the vehicle interior, It solves the problem that it takes a long time for the vehicle interior to reach a comfortable temperature and that it requires a lot of energy.
It has a configuration as shown in FIG. 7 or FIG.

That is, in the vehicle air conditioner shown in FIG. 6, the Peltier element 22 is installed on the floor 12 of the cabin 11, and the heat absorbing fins 23 project below the vehicle body 13. The metal plate of the Peltier element 22 has a heat sink 24
The radiator plate 24 is positioned below the feet of the occupant 14. Insulation material 2 between the radiator plate 24 and the floor 12
1 is interposed.

A solar cell 25 is installed on the upper part of the vehicle body 13 so as to face the sun. Either the electric power generated by the solar cell 25 or the electric power stored in the battery 15 switches the changeover switch 16 and the electric wire 17. Peltier element 2 through
2 is supplied. In addition, 18 in FIG.
Is an engine, 20 is a toe boat, and 22 is an engine room.

Therefore, when a current flows in one direction from the solar cell 25 or the battery 15 to the Peltier element 22 of the vehicle air conditioner, heat is absorbed from the heat absorbing fins 23 and radiated from the heat radiating plate 24, so that the occupant 14 You can warm your soles. When a current is applied to the Peltier element 22 in the opposite direction to the above, heat is absorbed from the radiator plate 24 and radiated from the heat absorbing fins 23, so that the sole of the occupant 4 can be cooled.

In the vehicle air conditioner shown in FIG. 7, a Peltier element 22 is installed on a toe boat 20, its heat absorbing fins 23 are exposed in an engine room 19, and a radiator plate 24 extends from the toe boat 20 to the front of the floor 12. It is exposed to the passenger compartment 11. Therefore, the heat in the engine room 19 can be absorbed and released to the feet of the occupant 14.

In a vehicle air conditioner shown in FIG. 8, a Peltier element 22 is installed on a ceiling 31 having a double structure. The heat absorbing fins 23 of the Peltier element 22 are exposed in the vehicle interior 11, and the heat radiation fins 24 </ b> A are exposed in an air flow passage 26 formed above the ceiling 31. A fan 28 for forcibly blowing air is installed in the air flow passage 26. The electric power generated by the solar cell 25 is supplied to the electric motor 2 and the motor 29 for driving the fan 28 and the Peltier element 22.
7.

Accordingly, when the electric power generated by the solar cell 25 is supplied to the motor 29, the fan 28 rotates, and the air in the vehicle compartment or the outside air sucked into the air flow passage 26 from the air inlet (not shown) flows through the air. Radiation fin 2 passing through path 26
After cooling the 4A, the air is discharged from the ventilation port 30 to the outside of the vehicle.
Then, at this time, the electric power generated in the solar cell 25 is also supplied to the Peltier element 22 and a current flows in one direction, so that the heat in the vehicle compartment 11 absorbed by the heat absorbing fins 23 is radiated from the heat radiating fins 24A. You.

Therefore, even if the vehicle is parked under the summer sunshine for a long time, it is possible to prevent the temperature inside the cabin 11 from rising. As a result, it is possible to prevent discomfort when the occupant 14 gets into the vehicle interior, and to shorten the time required for the vehicle interior to reach a comfortable temperature, thereby contributing to energy saving. If a current is applied to the Peltier element 22 in the opposite direction, the interior of the vehicle can be heated.

[0014]

However, the above-mentioned conventional vehicle air conditioner has the following problems.

In the case of the vehicle air conditioner shown in FIG. 8, the vehicle ceiling has a double structure, and a Peltier device 2
2, and the solar cell 25 is provided on the outer ceiling, so that the assembling work is troublesome and the cost is increased. Further, in the case of the vehicle air conditioner shown in FIG. 8, when cooling and heating by the Peltier element 22 are performed even during traveling, it is necessary to rotate the fan 28 even during traveling. Therefore, power must be supplied from the solar battery 25 or the battery 15 to the fan motor 29 even when the vehicle is traveling. In particular, when power is supplied from the battery 15, the battery capacity is reduced. That is, airflow is generated on the surface of the vehicle body during traveling, but this airflow is not effectively used.

In each of the vehicle air conditioners shown in FIGS. 6, 7 and 8, the solar cell 25 is a Peltier device 2
No. 2 is used only as a power source, and the solar cell 25 is not effectively used. Also, in the vehicle air conditioner shown in FIGS. 6 and 7, the solar battery 25 or the battery 15 is used as the power source of the Peltier element 22 even during traveling, so that when the battery 15 is used as the power source, the battery capacity is reduced. Further, in the vehicle air conditioner shown in FIG. 8, the thermoelectric heat pump device having the Peltier element 22 is used only at the time of stopping, but the heat pump device having the refrigerant circuit is also assisted during traveling. It is desirable to reduce the capacity of the heat pump device by using a thermoelectric heat pump device.

In addition to the above-described vehicle air conditioner, a vehicle air conditioner equipped with a thermoelectric heat pump device having a Peltier element is disclosed in Japanese Patent Application Laid-Open Nos. 2-234836 and 7-52640. It is also disclosed in the gazette. An air conditioner for a vehicle disclosed in Japanese Patent Application Laid-Open No. 2-234836 has a Peltier element arranged on the wall surface of a bus and directly below a window or a door glass. This is to prevent fogging. Further, in the vehicle air conditioner disclosed in Japanese Patent Application Laid-Open No. 7-52640, a heat-generating heat-absorbing connection at one end of a Peltier element is exposed in one duct, and the air sucked from the suction port of this duct is heated. Alternatively, it is cooled so as to blow out from each outlet into the vehicle interior, and the heat-generating heat-absorbing connection body at the other end of the Peltier element is exposed in the other duct. However, none of these vehicle air conditioners solves the above problems.

Accordingly, in view of the above prior art, the present invention provides a vehicle for a vehicle equipped with a thermoelectric heat pump device which is provided with a solar cell as a power source for a Peltier element and which can reduce the labor and cost of assembling work with a reasonable structure. It is a first object to provide an air conditioner.

It is a second object of the present invention to provide an air conditioner for a vehicle equipped with a thermoelectric heat pump device having a structure capable of reducing power consumption by utilizing an air flow generated during running of the vehicle.

It is a third object of the present invention to provide an air conditioner for a vehicle in which a solar cell provided as a power supply of a Peltier element can be used in addition to a power supply of a Peltier element to effectively use the solar cell. .

It is a fourth object of the present invention to provide a vehicle air conditioner which includes a thermoelectric heat pump device having a Peltier element and which can prevent a decrease in battery capacity during running of the vehicle.

Also, when the vehicle is running, a thermoelectric heat pump device having a Peltier element is used as an auxiliary to the heat pump device having a refrigerant circuit, and the capacity of the heat pump device can be reduced. A fifth object is to provide a device.

[0023]

According to a first aspect of the present invention, there is provided a vehicle air conditioner in which one of a heat absorbing portion and a heat radiating portion of a Peltier element is located in a vehicle interior and the other is a vehicle. Positioned outside the room, in a vehicle air conditioner equipped with a thermoelectric heat pump device configured to cool or heat the vehicle interior by passing a current from the DC power supply to the Peltier element, including a solar cell panel as the power supply, The solar cell panel is characterized in that a ventilation path is formed surrounding the heat absorbing portion or the heat generating portion of the Peltier element located outside the vehicle compartment.

According to a second aspect of the present invention, there is provided a vehicle air conditioner according to the first aspect, wherein the ventilation path is formed such that an airflow generated during traveling of the vehicle passes through the ventilation path in front of and behind the vehicle. It is characterized by being configured to blow through in the direction.

According to a third aspect of the present invention, there is provided a vehicle air conditioner in which one of a heat absorbing portion and a heat radiating portion of a Peltier element is located in a vehicle interior and the other is located outside the vehicle interior. In addition, in a vehicle air conditioner including a thermoelectric heat pump device configured to cool or heat the vehicle interior by flowing a current from the DC power supply to the Peltier element, a solar cell is provided as the power supply, and the solar cell is a battery. And the power generated by the solar cell can be charged to the battery.

According to a fourth aspect of the present invention, there is provided a vehicle air conditioner in which one of a heat absorbing portion and a heat radiating portion of a Peltier element is located in a vehicle interior and the other is located outside the vehicle interior. In addition, in a vehicle air conditioner including a thermoelectric heat pump device configured to cool or heat the vehicle interior by flowing a current from the DC power supply to the Peltier element, a power supply is switched using a solar cell, a battery, and a generator as the power supply. By means, when the vehicle is stopped, the solar cell or the battery is selected as the power source, and when the generator is generating power in a vehicle running state, the power is switched from the solar cell or the battery to the generator. I do.

According to a fifth aspect of the present invention, there is provided a vehicle air conditioner including a heat pump device having a refrigerant circuit, the first, second, third, or third air conditioner. The invention also provides a thermoelectric heat pump device for a vehicle air conditioner according to the present invention, in which when the vehicle is stopped, the thermoelectric heat pump device cools or heats the cabin, and when the vehicle is running, the heat pump device assists in cooling or heating the cabin. The present invention is also characterized in that cooling or heating of the vehicle interior by the thermoelectric heat pump device is performed.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view showing a layout of a heat system of a hybrid vehicle provided with a vehicle air conditioner according to an embodiment of the present invention, FIG. 2 is a system diagram of the heat system, and FIG. FIG. 4 is a configuration diagram of a thermoelectric heat pump device provided in the device, and FIG. 4 is a power supply circuit diagram relating to the thermoelectric heat pump device.

<Structure> The hybrid vehicle 31 shown in FIG. 1 is a so-called parallel type hybrid vehicle, in which a drive unit 33 composed of a driving motor and the like is mounted at the front of the vehicle, and an engine 32 is mounted at the rear of the vehicle. I have. The transmission 48 and the generator 3 are located at the rear of the vehicle.
5. A rectifier 80 for converting the power generated by the generator 35 from AC to DC, a battery 34, and the like are mounted, and an inverter 36 and the like are mounted at the front of the vehicle.

Therefore, in the hybrid vehicle 31, the rear wheel 37 is connected to the engine 32 via the transmission 48.
The front wheel 38 is driven by the drive unit 33
Is driven to rotate. In addition, in order to take advantage of the characteristics of the drive unit 23 (traveling motor) that can obtain a high torque at the time of starting (at a low speed) and the characteristics of the engine 32 that can obtain a high torque at a high speed, the starting time (at a low speed) of the vehicle Is driven by the drive unit 33. At high speed, both the engine 32 and the drive unit 33 or the engine 32
Only run by.

The running motor of the drive unit 33 is supplied with electric power from a battery 34 via an inverter 36, and the rotation speed and the like are controlled by the inverter 36 and the like. When the engine 32 is operating, the generator 35 is rotated and driven by the engine 32 to generate electric power, and the generated electric power is charged into the battery 34 via the rectifying device 80 and the traveling motor of the drive unit 33 via the inverter 36. Are also supplied.

The components related to the heat system such as the vehicle air conditioner are arranged in the hybrid vehicle 31 as follows.

That is, the indoor heat exchanger 3 of the vehicle air conditioner
9. The heater core 40 and the blower 41 (rotated by a motor) are arranged at the front of the vehicle compartment 42.
The outdoor heat exchanger 43 and the fan 44 (rotated and driven by the motor 44a) of the vehicle air conditioner are arranged along the rear portion of the side surface of the vehicle. Therefore, the air blown to the outdoor heat exchanger 43 by the fan 44 is discharged out of the vehicle from the exhaust hole 45 provided at the rear part of the side surface of the vehicle. The compressor 46 of the vehicle air conditioner is disposed near the engine 32, and the engine 32 or the compressor motor 47
Is selectively driven to rotate.

An engine radiator 49 is arranged at the rear of the vehicle, and a fan 50 (rotated by a motor 50a) is arranged adjacent to the engine radiator 49. An electric device radiator 51 and a battery radiator 52 are arranged adjacent to the vehicle front, and a fan 53 (rotated by a motor 53a) is arranged adjacent to the battery radiator 52. . In addition, an intake hole 7 is provided at the front end of the vehicle.
6 is provided, and a shutter 54 which is opened and closed by a motor 55 is provided at the rear end of the vehicle.

Here, the system configuration of the heat system will be described with reference to FIG. In FIG. 2, a thick line indicates a refrigerant circuit, and a thin line indicates a cooling water circuit such as a long life coolant (LLC).

The refrigerant circuit A of the vehicle air conditioner functions as a heat pump device, and performs a cooling operation and a heating operation by switching the flow path of the refrigerant by a four-way valve 61.

During the cooling operation, the refrigerant is supplied to the compressor 4
6. The four-way valve 61, the outdoor heat exchanger 43, the throttle valve 62, the indoor heat exchanger 39, the four-way valve 61, the accumulator 63, and the compressor 46 flow in this order. At this time, the indoor heat exchanger 39 functions as a heat absorber (evaporator), and the outdoor heat exchanger 43 functions as a radiator (condenser).
On the other hand, during the heating operation, the refrigerant flows through the compressor 46, the four-way valve 61, the indoor heat exchanger 39, the throttle valve 62, the outdoor heat exchanger 43, the four-way valve 61, the accumulator 63, and the compressor 46 in this order. At this time, the outdoor heat exchanger 43 functions as a heat absorber (evaporator), and the indoor heat exchanger 39 functions as a radiator (condenser). Reference numeral 73 in FIG. 2 denotes a switching damper for switching between outside air introduction and inside air circulation, and is rotated by a motor (not shown) or the like.

As the cooling water circuit, an engine cooling water circuit B, a battery cooling water circuit C, and an electric equipment cooling water circuit D are provided.

Of these, in the engine cooling water circuit B, the engine cooling water is mainly circulated between the engine 32 and the engine radiator 49 by the pump 64, and a part of the engine cooling water flows through the throttle valve 65. Through the heater core 40 of the vehicle air conditioner and the throttle valve 6
The battery 6 also flows through the heat exchanger 67 for warming up the battery. A throttle valve 66 is provided in the engine cooling water passage from the engine 32 to the engine radiator 49.
And another throttle valve 75 which bypasses the heat exchanger 67 for warming up the battery.
By adjusting the flow rate between the two, the heat radiation in the battery warm-up heat exchanger 67 can be adjusted.

In the battery cooling water circuit C, the battery 34
The flow of the battery cooling water is switched between cooling the battery and warming up the battery. That is, when the battery 34 is cooled, the throttle valve 68 that bypasses the battery radiator 52 is closed and the throttle valve 69 is opened, and the pump 7 is opened.
0 causes battery cooling water to circulate between the battery 34 and the battery radiator 52. At this time, the throttle valve 66 is closed so that the engine cooling water does not flow to the battery warming heat exchanger 67. On the other hand, the battery 34
Is warmed up, the throttle valve 66 is opened to allow the engine cooling water to flow to the battery warming heat exchanger 67, and the throttle valve 68 is opened and the throttle valve 69 is closed.
The pump 70 allows the battery cooling water to bypass the battery radiator 52 and circulate between the battery 34 and the battery warming heat exchanger 67.

In the electric equipment cooling water circuit D, the electric equipment cooling water is circulated by the pump 72 between the electric equipment 71 such as a drive unit and the electric equipment radiator 51.

Thus, in the vehicle air conditioner, cooling and heating by the indoor heat exchanger 39 (refrigerant circuit A) and heating by engine cooling water (heater core 40) are performed, and in the engine cooling water circuit B, engine cooling and battery cooling are performed. In the water circuit C, battery cooling and battery warm-up by engine cooling water are performed, and in the electric device cooling water circuit D, electric device cooling is performed.

Reference numeral 74 in FIG. 2 denotes a switching damper.
The switching damper 74 allows the fan 4 of the vehicle air conditioner to be operated.
4 can switch the air suction direction. The switching damper 74 is rotated to a side or b side in the figure by driving means such as a motor (not shown). During the cooling operation, the switching damper 74 is rotated to the
To directly inhale the outside air and exhaust it out of the vehicle through the exhaust hole 45. On the other hand, during the heating operation, the engine 32 and the battery 3
In order to effectively use the exhaust heat of the engine 4 and the like to assist the heating capacity in winter, the switching damper 74 is rotated to the b side to cause the engine 3
The air heated by the exhaust heat of the engine 2 (radiator 49 for the engine), the battery 34 and the like is sucked by the fan 44 and discharged from the exhaust hole 45 to the outside of the vehicle.

As shown in FIG. 3, the air conditioner for the hybrid vehicle 31 includes a Peltier device 101 in addition to the heat pump device having the refrigerant circuit A.
Is provided.

Further, the thermoelectric heat pump device 100
, A solar cell panel 102 is integrally provided as a DC power supply for the Peltier element 101. That is, the thermoelectric heat pump device 100 is a solar battery type thermoelectric heat pump device. The solar cell panel 102 includes a solar cell that generates DC power by receiving solar radiation energy.

The Peltier element 101 has a large number of n-type semiconductors 103 such as Bi ₂ Te ₃ and p-type semiconductors 104 arranged thereon, and the upper and lower ends of these semiconductors 103 and 104 are connected to an electrode 105 and an electrode, respectively. 106 to form a pn junction point.

The upper electrode 105 is provided with a heat sink 107.
Are joined to form a heat radiating portion or a heat absorbing portion, and a heat radiating plate 108 is joined to the lower electrode 106 to form a heat absorbing portion or a heat radiating portion. Which of the heat radiating plate 107 side and the heat radiating plate 108 side becomes the heat radiating portion and which becomes the heat absorbing portion is determined by the direction of the current flowing through the Peltier element 101.

Further, a side plate 109 is provided upright on the upper electrode 105. The side plates 109 extend in the vehicle front-rear direction, and a pair of side plates 109 are provided on both sides in the vehicle width direction of the upper heat radiating plate 107 (only one heat radiating plate is shown in the drawing). The solar cell panel 102 is provided with the pair of side plates 10.
9 and is supported by the side plate 109, thereby surrounding the heat radiating plate 107.

That is, the solar cell panel 102 is
In addition, a ventilation path 120 is formed surrounding the heat sink 107. In addition, without using the side plate 109, the solar cell panel 10
2 may be formed in a shape curved in the vehicle width direction to form the ventilation path 120 by surrounding the heat radiating plate 107 only by the solar cell panel 102.

The solar battery type thermoelectric heat pump device 100 is fixed to the ceiling 121 of the hybrid vehicle 31 as shown in the figure. At this time, the lower heat sink 10
8 is located in the vehicle interior, and the upper heat sink 107 is located outside the vehicle interior. Further, the ventilation path 120 composed of the solar cell panel 102 extends in the vehicle front-rear direction, and both ends in the same direction are open. That is, the ventilation path 120 is configured such that an airflow generated during traveling of the vehicle passes through the ventilation path 120 in the vehicle front-rear direction.

The fan 12 is located behind the ventilation passage 120.
When the vehicle stops (that is, when no airflow is generated), the fan 122 is rotated to force the air to flow through the ventilation passage 120. Although not shown, when the fan 122 is rotated, the drive motor of the fan 122 is connected to the solar cell panel 102, the battery 34, or the rectifier 80 (see FIG. 1).
Are selectively connected so that electric power is supplied to the drive motor from the solar cell panel 102, the battery 34, or the generator 35 (see FIG. 1).

On the other hand, on the vehicle interior side, the lower heat sink 108
A duct 123 is attached so as to surround the fan, a volute base 124 is coupled to the rear end of the duct 123, and a fan 1 is provided in the volute base 124.
25 are provided. That is, an air blower is configured by the duct 123, the volute base 124, and the fan 125, and by rotating the fan 125, the air in the vehicle compartment flows from the front end side of the duct 123 to the duct 1.
The air is sucked into the inside 23, and the air flows through the duct 123 and the volute base 124 and is exhausted again into the vehicle interior. In other words, the air in the passenger compartment is
And forced circulation through the volute base 124.

Although not shown, when the fan 125 is rotated, the solar cell panel 102, the battery 34 or the rectifier 80 (see FIG. 1) is selectively connected to the drive motor of the fan 125, Panel 10
2. Electric power is supplied from the battery 34 or the generator 35 (see FIG. 1) to the drive motor.

Here, a power supply circuit of the thermoelectric heat pump device 100 will be described with reference to FIG.

As shown in FIG. 4, the Peltier device 101
A mode changeover switch 126 is provided for the electrodes 105 and 106.
Is connected, and the mode changeover switch 126
A ₁Side and b₁And when connected to the
The direction of the current flowing through the Peltier element 101 will be opposite
Swelling.

The mode change switch 12
6, the solar cell panel 102 and the rectifier 80 (that is, the generator 35) are connected via a power switch 127, and the battery 34 is connected via a battery switch 128.

That is, the power switch 127 is set to b ₂
When the power switch 12 is connected to the
The solar cell panel 102 is connected to the Peltier device 101 via the switch 7 and the mode changeover switch 126. At this time, the solar cell panel 102 serves as a power supply for the Peltier element 101. When the battery switch 128 is closed at this time, the battery switch 128 and the power switch 12 are closed.
7, the solar cell panel 102 is also connected to the battery 34.

On the other hand, the power switch 127 is set to a ₂
Side, the power switch 127
And the generator 3 via the mode switch 126
5 is connected to the Peltier element 101. At this time, the battery switch 128
Is closed, the generator 35 is connected to the battery 34 via the battery changeover switch 128 and the power supply changeover switch 127.

[0060] to connect the power changeover switch 127 to a ₂ side is a power generation of the generator 35 in the vehicle running state. That is, when the hybrid vehicle 31 is traveling by the engine 32 for generating electricity the generator 35 by the driving of the engine 32, the power changeover switch 127 at this time to connect to a ₂ side, the Peltier generator 35 The power supply of the element 102 is used.

The polarities of the solar cell panel 102, the battery 34, and the rectifier 80 are as shown in the drawing, and, of course, the respective + poles are connected and the − poles are connected. Then, a mode switch 126 when connected to a ₁ side a current flows through the solid arrow R direction, the Peltier element 101 a current flows from the left side in the figure to the right. At this time, the heat radiating plate 108 side becomes a heat absorbing portion and the heat radiating plate 107 side becomes a heat radiating portion, and heat moves in the solid arrow X direction to cool the vehicle interior. On the other hand, when connecting the mode switch 126 to b ₁ side a current flows through the dashed arrow H direction, the Peltier element 101 a current flows from the right side in the figure to the left. At this time, the heat radiating plate 107 side serves as a heat absorbing portion and the heat radiating plate 108 side serves as a heat radiating portion, and heat moves in the direction indicated by the dotted arrow Y to heat the vehicle interior.

<Operation / Effect> According to the vehicle air conditioner of the present embodiment, the following operation / effect can be obtained.

As described above, the thermoelectric heat pump device 1
In the case of 00, a solar panel 102 provided as a power source for the Peltier element 101 is used to dispose a heat radiating plate 107 located outside the cabin.
, The ventilation path 120 is formed so as to surround the solar cell-type thermoelectric heat pump device 1 during assembly.
00 only needs to be attached to the ceiling 121 of the vehicle. For this reason, it is not necessary to provide a double ceiling as in the related art, and the assembly work and cost can be reduced.

The thermoelectric heat pump device 100
In the vehicle air conditioner provided with the air conditioner, air conditioning of the vehicle interior is performed as follows.

That is, for example, when the hybrid vehicle 31 is parked under the hot summer weather, the power switch 127
By connecting to the b ₁ side, the solar cell panel 102
Is supplied to the Peltier element 101, and
By connecting the mode switch 126 to b ₁ side, a current flows in the direction of arrow R in FIG. 4 with respect to the Peltier element 102. As a result, the heat radiating plate 108 inside the vehicle cabin becomes a heat absorbing portion, and the heat radiating plate 107 outside the vehicle cabin becomes a heat radiating portion,
The cabin is cooled.

At this time, the power of the solar cell panel 102 is also supplied to the fans 122 and 125, and the fans 122 and 125 rotate. When the fan 122 rotates, the ventilation path 1 including the solar cell panel 102 is formed.
Since the air flows forcibly through the heat dissipation plate 20, heat radiation at the heat dissipation plate 107 is promoted, and heat absorption at the heat dissipation plate 108 is promoted. Further, the rotation of the fan 125 circulates the air in the passenger compartment. Therefore, cooling of the vehicle interior is promoted.

For this reason, it is possible to prevent the temperature inside the vehicle compartment from rising. As a result, it is possible to prevent discomfort when the occupant gets into the vehicle interior, and to shorten the time required for the vehicle interior to reach a comfortable temperature by the heat pump device having the refrigerant circuit A, thereby contributing to energy saving. .

Further, at this time, the battery changeover switch 128 is closed and the battery 34 is connected to the solar cell panel 10.
2, the battery 34 is also charged by the solar cell panel 102. That is, the solar cell panel 102 can be effectively used by not only using the solar cell panel 102 as a power source for the Peltier element 101 but also using the solar cell panel 102 to charge the battery 34.

Further, the hybrid vehicle 31 is operated under cold winter conditions.
When the vehicle is parked, set the power switch 127 to b₁
Side, the solar cell panel 102
Power to the Peltier element 101
Set the changeover switch 126 to a ₁By connecting to the
4 in the direction of arrow H in FIG.
Apply current. As a result, the radiator plate 108 in the vehicle interior is
And the heat radiating plate 107 outside the cabin serves as a heat absorbing portion.
The inside is heated.

Therefore, it is possible to prevent the temperature in the passenger compartment from lowering, to prevent discomfort when the passenger gets into the passenger compartment, and to keep the passenger compartment at a comfortable temperature by the heat pump device having the refrigerant circuit A. It is possible to contribute to energy saving by shortening the time until the energy saving.

In the case of indoor parking, the solar cell panel 102 cannot be used. However, by supplying electric power from the battery 34 to the Peltier element 101, cooling and heating by the thermoelectric heat pump device 100 can be performed.

On the other hand, when the hybrid vehicle 31 is traveling, an air current is generated on the surface of the vehicle body, and this air flow blows through the ventilation passage 120 in the front-rear direction of the vehicle. Is promoted, the fan 122 is stopped. As a result, the fan 12
Since it is not necessary to supply power from the solar cell panel 102 to the battery 2, charging of the battery 34 can be promoted accordingly.

That is, since the ventilation passage 120 is configured so that the airflow generated during traveling blows in the front-rear direction of the vehicle, the airflow can be effectively used. There is no need to flow power, and power consumption can be reduced.

The hybrid vehicle 31 has an engine 32
When traveling by, in order to power the generator 35 by the driving of the engine 32, by connecting the power changeover switch 127 to a ₂ side, the generator 3 the power of the Peltier element 101 from the solar cell panel 102
Switch to 5. This can prevent the capacity of the battery 34 from decreasing.

That is, when the solar cell panel 102 is selected as the power supply of the Peltier element 101 and the solar cell panel 102 does not generate much power due to cloudy weather or the like, the power is supplied from the battery 34 to the Peltier element 101. As a result, the capacity of the battery 34 is reduced. By switching the power supply of the Peltier element 101 to the generator 35, such a reduction in the battery capacity can be prevented.

At this time, by closing the battery switch 128 and connecting the battery 34 to the generator 35, the battery 34 is also charged by the generator 35.

[0077] In the power supply circuit described above, the Peltier element 1 the power changeover switch 127 to connect to a ₁ side
When the power supply 01 is switched from the solar cell panel 102 to the generator 35, nothing is connected to the solar cell panel 102.

[0078] Therefore, further, as shown by a chain line in FIG. 4, a battery 34 solar panel 102 and separately connectable via the other battery changeover switch 130, the power change-over switch 127 to a ₁ side When the power supply of the Peltier element 101 is switched from the solar cell panel 102 to the generator 35 by connection, the battery switch 130 is closed to close the solar cell panel 102 and the battery 34.
May be connected to charge the battery 34 with the electric power generated by the solar cell panel 102. At this time, the solar cell panel 102 exclusively uses the battery 34.
Used for charging. That is, the solar cell panel 102 can be more effectively used.

During traveling of the vehicle, the cooling or heating of the vehicle interior by the thermoelectric heat pump device 100 having the Peltier element 101 is assisted by the heat pump device having the refrigerant circuit A to assist the cooling or heating of the vehicle interior. Therefore, the power of the heat pump device can be reduced.

In the above description, the case where the present invention is applied to a hybrid vehicle has been described. However, the present invention is not limited to this, and the present invention is also applicable to an electric vehicle or a general engine-driven vehicle that runs only by a running motor. can do.

[0081]

As described above, the vehicle air conditioner according to the first aspect of the present invention has one of the heat absorbing portion and the heat radiating portion of the Peltier element positioned in the vehicle interior. In a vehicle air conditioner equipped with a thermoelectric heat pump device configured to cool or heat the vehicle interior by passing an electric current from the DC power supply to the Peltier element while positioning one of them outside the vehicle interior, a solar cell is used as the power supply. With a solar panel,
A ventilation path is formed so as to surround a heat absorbing portion or a heat generating portion of the Peltier element located outside the vehicle compartment.

Therefore, according to the vehicle air conditioner of the first invention, the solar cell panel provided as a power supply for the Peltier element forms a ventilation path surrounding the heat absorbing or radiating part of the Peltier element located outside the vehicle compartment. Therefore, at the time of assembling, it is only necessary to attach the solar cell type thermoelectric heat pump device to the ceiling of the vehicle. For this reason, it is not necessary to provide a double ceiling as in the related art, and the assembly work and cost can be reduced.

Further, the vehicle air conditioner of the second invention has a first
In the air conditioner for a vehicle according to the present invention, the ventilation path is configured such that an airflow generated when the vehicle travels passes through the ventilation path in a vehicle front-rear direction.

Therefore, according to the vehicle air conditioner of the second aspect of the present invention, the airflow can be effectively used by forming the ventilation path so that the airflow generated when the vehicle travels passes through the vehicle in the front-rear direction. In addition, when the vehicle is running, there is no need to flow air into the ventilation path by the fan, and power consumption can be reduced.

Further, in the vehicle air conditioner of the third invention, one of the heat absorbing portion and the heat radiating portion of the Peltier element is located in the vehicle interior and the other is located outside the vehicle interior, and the Peltier device is connected to the DC power source. In a vehicle air conditioner equipped with a thermoelectric heat pump device configured to cool or heat the vehicle interior by passing a current through the element, a solar cell is provided as the power supply, and the solar cell can be connected to a battery, It is characterized in that the power generated by the solar cell can be charged to the battery.

Therefore, according to the vehicle air conditioner of the third invention, not only is the solar cell used as a power source of the Peltier element but also used for charging the battery, so that the solar cell can be effectively used. Can be.

Further, in the air conditioner for a vehicle according to the fourth invention, one of the heat absorbing portion and the heat radiating portion of the Peltier element is located inside the vehicle compartment and the other is located outside the vehicle compartment, and the Peltier device is connected to the Peltier device by a DC power supply. In a vehicle air conditioner equipped with a thermoelectric heat pump device configured to cool or heat a vehicle cabin by passing a current through an element, a solar battery, a battery, and a generator are used as the power source, and when the vehicle stops, by a power source switching unit, When the solar cell or the battery is selected as the power source, and when the generator is generating power while the vehicle is running,
The power supply is switched from the solar cell or the battery to the generator.

Therefore, according to the vehicle air conditioner of the fourth invention, when the generator is generated while the vehicle is running, the power source is switched from the solar battery or the battery to the generator, thereby preventing the battery capacity from decreasing. Can be.

The vehicle air conditioner according to the fifth invention is a vehicle air conditioner provided with a heat pump device having a refrigerant circuit, wherein the vehicle air conditioner according to the first, second, third or fourth invention is provided. When the vehicle is stopped, the thermoelectric heat pump device cools or heats the vehicle interior, and when the vehicle is running, the heat pump device assists cooling or heating of the vehicle interior by using the thermoelectric heat pump device. The air conditioner is also configured to perform cooling or heating in the vehicle cabin.

Therefore, according to the vehicle air conditioner of the fifth aspect, the thermoelectric heat pump device having a Peltier element is used as an auxiliary for cooling or heating the cabin by the heat pump device having the refrigerant circuit. Since cooling or heating of the vehicle interior is also performed, the power of the heat pump device can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a layout related to a heat system of a hybrid vehicle including a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is a system diagram of the heat system.

FIG. 3 is a configuration diagram of a thermoelectric heat pump device provided in the vehicle air conditioner.

FIG. 4 is a power supply circuit diagram relating to the thermoelectric heat pump device.

FIG. 5 is an explanatory diagram of a Peltier device.

FIG. 6 is a configuration diagram of a vehicle air conditioner provided with a conventional thermoelectric heat pump device having a Peltier element.

FIG. 7 is a configuration diagram of a vehicle air conditioner provided with a conventional thermoelectric heat pump device having a Peltier element.

FIG. 8 is a configuration diagram of a vehicle air conditioner including a conventional thermoelectric heat pump device having a Peltier element.

[Explanation of symbols]

 Reference Signs List 35 generator 40 heater core 80 rectifier 100 thermoelectric heat pump device 101 Peltier element 102 solar cell panel 103 n-type semiconductor 104 p-type semiconductor 105, 106 electrode 107, 108 radiator plate 109 side plate 120 ventilation path 121 ceiling 122, 125 fan 123 duct 124 Volute base 126 Mode switch 127 Power switch 128, 130 Battery switch A Refrigerant circuit

Claims (5)

[Claims] An air conditioner according to claim 1, wherein one of a heat absorbing portion and a heat radiating portion of the Peltier element is located in the vehicle interior, and the other is located outside the vehicle interior. Or in a vehicle air conditioner equipped with a thermoelectric heat pump device configured to heat, a solar cell panel is provided as the power source, and the heat absorbing portion or the heat generating portion of the Peltier element positioned outside the vehicle compartment by the solar cell panel. An air conditioner for a vehicle, wherein a ventilation path is formed so as to surround the vehicle. 2. The air conditioner for a vehicle according to claim 1, wherein the ventilation path is configured such that an airflow generated during traveling of the vehicle flows through the ventilation path in a front-rear direction of the vehicle. apparatus. 3. A Peltier device in which one of a heat absorbing portion and a heat radiating portion is located in a vehicle interior and the other is located outside the vehicle interior, and a current flows from the DC power supply to the Peltier device to cool the vehicle interior. Or in a vehicle air conditioner provided with a thermoelectric heat pump device configured to heat, a solar cell is provided as the power supply, and the solar cell can be connected to a battery, and the generated power of the solar cell is supplied to the battery. An air conditioner for a vehicle, which is configured to be rechargeable. 4. A method of cooling a vehicle interior by positioning one of a heat absorbing portion and a heat radiating portion of a Peltier device in a vehicle interior and the other of the heat absorbing portion and the heat radiation portion outside the vehicle interior, and supplying a current from the DC power supply to the Peltier device. Or, in a vehicle air conditioner equipped with a thermoelectric heat pump device configured to heat, a solar cell, a battery, and a generator are used as the power source, and when the vehicle is stopped, the solar cell or the battery is selected as the power source by a power supply switching unit. An air conditioner for a vehicle, wherein power is switched from the solar cell or battery to the generator when the generator is generating power in a running state of the vehicle. 5. A vehicle air conditioner provided with a heat pump device having a refrigerant circuit, comprising: the thermoelectric heat pump device of the vehicle air conditioner of claim 1, 2, 3 or 4; The vehicle interior is cooled or heated by a thermoelectric heat pump device, and when the vehicle is running, cooling or heating of the vehicle interior by the thermoelectric heat pump device is also performed as an aid to cooling or heating of the vehicle interior by the heat pump device. An air conditioner for a vehicle, comprising: