JP2011143911A - Vehicular air-conditioning unit and vehicular air-conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular air-conditioning unit and a vehicular air-conditioning system capable of air-conditioning the inside of a cabin while saving energy, which is superior in a mounting characteristic to a vehicle. <P>SOLUTION: This vehicular air-conditioning system includes the vehicular air-conditioning unit 1, a vehicle system 3 and a radiator 5. The vehicular air-conditioning unit 1 includes a water-air heat exchanger 7, a heat storage tank 9, a water heat exchanger 11 and a Peltier element 13. The heat storage tank 9 has a heat storage material. The water heat exchanger 11, the vehicle system 3 and the radiator 5 are connected via pipes 21 and 22 and pipes 25-28. This vehicular air-conditioning system performs heating or cooling as initial air-conditioning by a positive or negative calorific value stored in the heat storage material. Meanwhile, the heating as steady air-conditioning is performed by heating surrounding air by radiating exhaust heat of the vehicle system 3 to water of the water-air heat exchanger 7. The cooling as the steady air-conditioning is also performed by cooling the surrounding air by absorbing heat from the water in the water-air heat exchanger 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioning unit and a vehicle air conditioning system.

  A conventional vehicle air conditioning system is disclosed in FIG. This vehicle air conditioning system includes first and second in-vehicle heat exchangers, a Peltier element, an exhaust heat recovery device as a heat source, and a vehicle exterior heat exchanger. The second heat exchanger, the exhaust heat recovery unit, and the vehicle exterior heat exchanger are connected by piping, and a switching valve is provided in the piping between the exhaust heat recovery device and the vehicle exterior heat exchanger. Yes. The pipe is provided with a pump, and water as a heat exchange medium circulates in the pipe.

  In this vehicle air conditioning system, heat can be transferred between the air passing through the first in-vehicle heat exchanger and the water in the second in-vehicle heat exchanger by the Peltier element. For this reason, the air in the first in-vehicle heat exchanger is cooled by connecting the second in-vehicle heat exchanger and the in-vehicle heat exchanger by the switching valve and cooling the water in the pipe. Indoor cooling can be performed. Moreover, the air in the 1st in-vehicle heat exchanger is heated by connecting the 2nd in-vehicle heat exchanger and the exhaust heat recovery device by the switching valve and heating the water in the pipe, thereby heating the inside of the vehicle interior. It can be performed.

  Further, a conventional vehicle air conditioning unit is disclosed in FIG. The vehicle air conditioning unit includes a heat storage unit, a first heat exchanger, and a Peltier element.

  The heat storage unit incorporates a heat storage material and is insulated from the outside. This heat storage unit also has a heat storage side heat sink including a flow path. The heat storage side heat sink is formed with a first outlet for flowing out the heat exchange medium exchanged from the heat storage material and a first inlet for flowing in the heat exchange medium. A first pipe is connected to the first outlet of the heat storage side heat sink, and a second pipe is connected to the first inlet.

  Further, the air around the first heat exchanger is supplied into the vehicle interior. The first heat exchanger is formed with a second outlet for letting out the heat exchange medium and a second inlet for letting in the heat exchange medium. The second outlet and the second inlet of the in-vehicle heat exchanger are connected by a third pipe, and a heat source side heat sink including a flow path is provided in the third pipe.

  The Peltier element can impart the opposite amount of heat to the heat storage side heat sink and the heat source side heat sink. The first pipe is connected to the third pipe via the first on-off valve on one side of the Peltier element, and the second pipe is connected to the third pipe via the second on-off valve on the other side of the Peltier element. The third pipe is provided with a pump for circulating the heat exchange medium. The Peltier element, the first on-off valve, and the second on-off valve are controlled by a control device.

  In this vehicle air conditioning unit, when not in use, the control device controls the first and second on-off valves, so that the second outlet and the second inlet communicate with each other via the heat source side heat sink. And the second inlet are not connected, and the second outlet and the first inlet are not connected. In this state, under the control of the control device, the Peltier element absorbs heat to the heat exchange medium in the heat storage side heat sink to give a negative amount of heat, and radiates heat to the heat exchange medium in the heat source side heat sink to give a positive amount of heat. Is granted. In this way, the first heat exchanger and the heat source side heat sink can store a negative heat quantity in the heat storage material of the heat storage device while circulating the heat exchange medium through the third pipe.

  In use, the first outlet and the second inlet communicate with each other, the second outlet and the first inlet communicate with each other, and the second outlet and the second inlet pass through the heat storage side heat sink. Communicate. Thus, the in-vehicle heat exchanger and the heat storage side heat sink distribute the heat exchange medium through the first to third pipes. For this reason, it becomes possible to cool the passenger compartment by the negative amount of heat stored in the heat storage material of the heat storage device.

JP-A-10-35268 JP 2001-301446 A

  However, the vehicle air conditioning system of Patent Document 1 employs an exhaust heat recovery device as a heat source for heating the heat exchange medium that is water, so that the exhaust heat recovery device sufficiently performs heat exchange immediately after the vehicle is started. The medium cannot be heated, and the air conditioning capability in the passenger compartment is insufficient. In particular, in a vehicle that travels a short distance in a cold environment and then parks outdoors for a long time, the amount of heat recovered by the exhaust heat recovery device is insufficient, and thus the above problem becomes more prominent. Further, as shown in FIG. 3 of Patent Document 1, when a plurality of Peltier elements are provided to increase the air conditioning capability, the power consumption increases.

  Further, even the vehicle air conditioning unit disclosed in Patent Document 2 tends to cause insufficient air conditioning in the passenger compartment. That is, in this vehicle air conditioning unit, while storing a negative amount of heat in the heat storage material, the Peltier element absorbs heat from the heat exchange medium in the heat storage side heat sink, while the heat exchange medium in the heat source side heat sink. Dissipate heat. Therefore, in this vehicle air conditioning unit, during the cooling operation, the heat exchange medium cooled by the heat storage material of the heat storage device is warmed by the heat exchange medium in the in-vehicle heat exchanger and the third pipe, It is difficult to cool the room sufficiently. In addition, in order to perform air conditioning of the passenger compartment for a long time by this vehicle air conditioning unit, it is necessary to enlarge the heat storage unit and incorporate a large amount of heat storage material. In this case, the mountability of the vehicle air conditioning unit is reduced due to the increase in size. Furthermore, the power consumption of the Peltier device for heat transfer increases.

  In order to improve the cruising range of the vehicle, it is necessary to air-condition the vehicle interior while saving energy. This air-conditioning in the vehicle compartment under energy saving is particularly demanded not only for vehicles using a hybrid engine but also for electric vehicles that run using electric power charged in a battery or a fuel cell.

  In this regard, in the case of a vehicle air conditioning unit or a vehicle air conditioning system having a heat storage tank having a heat storage material and a Peltier element, power consumption is compared to the case of air conditioning the vehicle interior using an electric compressor or the like. It becomes possible to improve the cruising distance of an electric vehicle or the like. However, for example, when the vehicle interior is cooled by the heat storage tank and the Peltier element, the cooling capacity is lower than when the vehicle interior is cooled using a compressor, and the capacity of the heat storage tank allows for a long cooling operation. Is unsuitable. For this reason, when performing cooling with a heat storage tank and a Peltier element, accept a decrease in the cooling capacity of the vehicle interior after a certain time, or provide multiple Peltier elements, or increase the capacity of the heat storage tank Therefore, it is necessary to compensate for the decrease in cooling capacity. In this case, the problems described as the problems of the inventions of Patent Documents 1 and 2 are prominent, and the purpose of air conditioning in the vehicle interior under energy saving cannot be achieved.

  In order to achieve the above object, the inventors focused on the fact that the air conditioning capability required for the vehicle air conditioning unit and the vehicle air conditioning system differs between the initial air conditioning and the steady air conditioning. Here, the initial air conditioning refers to the air conditioning in the passenger compartment before or just after starting the vehicle. Moreover, steady air conditioning refers to air conditioning in the passenger compartment while the vehicle is traveling.

  That is, in the initial air conditioning, there is a demand for an air conditioner having a high output value even if it has a capability of lowering or raising the temperature of the passenger compartment in a short time, that is, a short time operation. On the other hand, in steady-state air conditioning, there is a demand for an air conditioner capable of maintaining a constant output for a longer time than the ability to maintain the temperature in the passenger compartment adjusted by the initial air conditioning for a long time, that is, the magnitude of the output. For this reason, in order to realize the air conditioning of the vehicle interior under energy saving, it is necessary to make both the initial air conditioning and the steady air conditioning suitable.

  The present invention has been made in view of the above circumstances, and an object to be solved is to provide an air conditioning unit for a vehicle that can be air-conditioned while saving energy in a vehicle interior while being excellent in mountability in a vehicle. Moreover, providing the vehicle air conditioning system provided with this vehicle air conditioning unit is also an issue to be solved.

The vehicle air conditioning unit according to the present invention has a first outlet for allowing the heat exchange medium to flow out and a first inlet for allowing the heat exchange medium to flow in, and an in-vehicle heat exchanger in which ambient air is supplied into the vehicle interior. When,
A second outlet for letting out the heat exchange medium and a second inlet for letting in the heat exchange medium are formed, and has a heat storage material, and the amount of heat stored in the heat storage material can be exchanged with the heat exchange medium. A heat storage tank,
A vehicle interior channel connecting the first outlet and the second inlet, and connecting the second outlet and the first inlet;
A first pump for circulating the heat exchange medium in the vehicle interior passage;
A connection channel that can be connected to an external heat source;
A Peltier element that moves heat between the heat exchange medium in the in-vehicle flow path and the heat exchange medium in the connection flow path is provided (Claim 1).

  In the vehicle air conditioning unit of the present invention, the in-vehicle heat exchanger and the heat storage tank are connected to each other by a vehicle interior passage. And by operating the 1st pump, the heat exchange medium in the flow path for vehicle interior distribute | circulates, and a heat exchange medium will circulate between the heat exchanger for vehicle interior and a thermal storage tank. On the other hand, in this vehicle air conditioning unit, an external heat source is connected via a connection flow path. For this reason, this air conditioning unit for vehicles can constitute a vehicle air conditioning system as follows by combining with an external heat source.

(In cold environment)
When not in use in a cold environment, the heat exchange medium is circulated between the in-vehicle heat exchanger and the heat storage tank, and the connection flow path is connected to an external heat source having a positive amount of heat. The connection flow path side of the Peltier element is the heat absorption side, and the vehicle interior flow path side is the heat dissipation side. Thereby, the heat exchange medium in the vehicle interior flow path is heated, and a positive amount of heat can be stored in the heat storage material of the heat storage tank.

  Then, in the initial stage of use, that is, as the initial air conditioning, in the heat storage tank, the positive heat quantity of the heat storage material heats the heat exchange medium, and the heated heat exchange medium flows into the in-vehicle heat exchanger, The exchanger heats the surrounding air. Thus, the vehicle interior is heated by the initial air conditioning. Thus, in this vehicle air conditioning system, the temperature in the passenger compartment can be raised in a short time during heating of the initial air conditioning. Moreover, this vehicle air conditioning system can realize heating as initial air conditioning with energy saving. In addition, the time of non-use means the time when the vehicle interior air conditioning unit or the vehicle air conditioning system is not performing air conditioning of the vehicle interior. The term “in use” refers to a time when the vehicle interior is air-conditioned by the vehicle air conditioning unit or the vehicle air conditioning system.

  In addition, after the initial lapse of use, that is, in steady air conditioning, the heat exchange medium heated by an external heat source heats the heat exchange medium in the vehicle interior passage through the Peltier element. The in-vehicle heat exchanger heats the surrounding air. Thus, the passenger compartment is heated by steady air conditioning. Thus, by using the amount of heat from the external heat source for steady-state air conditioning, the vehicle interior can be heated for a long period of time. The air conditioning capacity required for steady air conditioning is the ability to maintain the temperature in the passenger compartment for a long time. For this reason, the electric power supplied to the Peltier element may be any electric power that can absorb heat from the heat exchange medium in the connection flow path and can radiate the heat to the heat exchange medium in the flow path for the vehicle interior to such an extent that heating of the vehicle interior can be maintained. . For this reason, it is also possible to reduce the power supplied to the Peltier element. For this reason, it is possible to reduce power consumption when the Peltier element is used, and to reduce the size of the Peltier element.

(Under hot environment)
When not in use in a hot environment, the direction of the current supplied to the Peltier element is opposite to that in a cold environment, and the vehicle interior channel side of the Peltier element is the heat absorption side and the connection channel side is the heat dissipation side. Thereby, it is possible to store a negative amount of heat in the heat storage material of the heat storage tank by radiating heat to the heat exchange medium in the connection flow path.

  Then, as the initial air conditioning, in the heat storage tank, the negative heat amount of the heat storage material cools the heat exchange medium, the cooled heat exchange medium flows into the in-vehicle heat exchanger, and the in-vehicle heat exchanger Cool down. Thus, the passenger compartment is cooled by the initial air conditioning. Thus, the vehicle air conditioning system can lower the temperature in the vehicle compartment in a short time during the cooling of the initial air conditioning. Further, this vehicle air conditioning system can realize cooling as initial air conditioning with energy saving.

  In steady air conditioning, the Peltier element cools the heat exchange medium in the vehicle interior passage, and the vehicle heat exchanger cools the surrounding air. Thus, the passenger compartment is cooled by steady air conditioning. At this time, similarly to the heating at the time of steady air conditioning, the power supplied to the Peltier element may be any power that can absorb heat to the heat exchange medium in the vehicle interior passage to such an extent that cooling of the vehicle interior can be maintained. For this reason, it is possible to reduce the electric power supplied to a Peltier device. For this reason, it is possible to reduce power consumption when the Peltier element is used, and to reduce the size of the Peltier element.

  The amount of heat radiated to the connection channel side can be stored in the connection channel side in addition to being released to the outside of the passenger compartment as appropriate. Further, when the external heat source has a negative amount of heat, the connection flow path can be connected to the heat source. In this case, the Peltier element has the connection flow path side as the heat absorption surface and the vehicle interior flow path side as the heat dissipation surface.

  In this vehicle air conditioning unit, initial air conditioning is performed using positive or negative heat stored in the heat storage material. Moreover, in this vehicle air conditioning unit, the air conditioning by the positive or negative heat quantity stored in the heat storage material can be limited to the initial air conditioning. As described above, when the air conditioning based on the positive or negative heat quantity stored in the heat storage material is limited to the initial air conditioning, the capacity of the heat storage tank can be set to a minimum necessary size capable of performing the initial air conditioning. Furthermore, since this vehicle air-conditioning unit employs a Peltier element, the heat absorption surface and the heat dissipation surface can be easily switched by changing the direction and magnitude of the current supplied to the Peltier element. The temperature control can be easily changed. Accordingly, the vehicle air conditioning unit can reduce the size of the housing, simplify the structure, and reduce the manufacturing cost.

  In addition, when air conditioning with positive or negative heat stored in the heat storage material is limited to the initial air conditioning, it is sufficient for the vehicle air conditioning unit to have only the minimum amount of heat storage material in the heat storage tank. It becomes. For this reason, even if it uses a Peltier device with low capability at the time of heat storage, sufficient positive or negative calorie | heat amount can be stored in a heat storage material. Also, there is no need to use a Peltier element to heat or cool the heat exchange medium during initial air conditioning. Further, the use of the Peltier element during steady air conditioning can be minimized. For this reason, it is also possible to reduce the size of the Peltier element. For this reason, in this air conditioning unit for vehicles, it becomes possible to reduce power consumption by a Peltier element.

  As an external heat source that can be connected to the connection flow path, a conventional internal combustion engine or the like can be adopted in addition to a motor, an inverter, a converter, a hybrid engine, or the like. Further, as an external heat source, a heating device such as an electric heater or a cooling device can be employed. By connecting the connection flow path with a motor or the like, it can be used as heating as steady-state air conditioning during use. Thus, further energy saving can be realized by using exhaust heat from a motor or the like. Further, in a cold environment, the heat exchange medium on the connection flow path side is absorbed by the Peltier element, so the heat exchange medium that has absorbed heat can be used for cooling a motor or the like.

  On the other hand, when an electric heater or cooling device is used as an external heat source, these positive or negative heat quantities are used for steady-state air conditioning. Is possible.

  Therefore, this vehicle heat storage unit can air-condition the vehicle interior with energy saving while being excellent in mountability to the vehicle.

  In particular, since the vehicle air conditioning unit can be connected to an internal combustion engine, it can be easily mounted on an existing vehicle. For this reason, the vehicle air conditioning system by the combination of this vehicle air conditioning unit and an internal combustion engine can be comprised. That is, even in an existing vehicle, it is possible to perform air conditioning of the vehicle interior by this vehicle air conditioning unit. Moreover, since this vehicle air conditioning unit is small, it can be easily installed in the passenger compartment.

  The vehicle heat storage unit may include a sub heat exchanger in which a third outlet for letting out the heat exchange medium and a third inlet for letting in the heat exchange medium are formed. Further, the connection flow path can communicate with the third outlet and the third inlet. And a Peltier device can be set as the structure which moves heat with the heat exchanger for vehicles, and a sub heat exchanger (Claim 2). In this case, the heat exchange medium in the connection channel absorbs heat or dissipates heat in the sub exchanger. For this reason, it is also possible to release the heat radiated to the heat exchange medium on the connection flow path side to the outside of the passenger compartment by the auxiliary heat exchanger. Therefore, for example, when an external heat source is a motor, in a hot environment, the auxiliary heat exchanger can release the heat of the heat exchange medium in the connection flow path to the outside of the passenger compartment, thereby cooling the motor. It becomes.

  Moreover, in this vehicle heat storage unit, since heat moves between the heat exchange medium in the vehicle interior heat exchanger and the heat exchange medium in the auxiliary heat exchanger, during heating or cooling as steady air conditioning, The operation of the first pump can be stopped. For this reason, the air-conditioning of the vehicle interior by energy saving is also realizable.

  In this vehicle heat storage unit, it is preferable that the in-vehicle heat exchanger has a surface area expanding means for expanding the surface area with respect to the surrounding air. In this case, heat can be radiated efficiently by increasing the surface area of the in-vehicle heat exchanger. Thereby, more effective cooling or heating becomes possible. In addition, as a surface area expansion means, an air cooling fin, a thermal radiation louver, etc. are employable.

  In this vehicle heat storage unit, the in-vehicle heat exchanger can be composed of a heating heat exchanger and a cooling heat exchanger. Further, the heat storage tank can be composed of a heating heat storage tank and a cooling heat storage tank. Furthermore, the vehicle interior channel may be composed of a heating channel that connects the heating heat exchanger and the heating heat storage tank, and a cooling channel that connects the cooling heat exchanger and the cooling heat storage tank. . The first pump includes a first heating pump that circulates the heat exchange medium in the heating flow path and a first cooling pump that circulates the heat exchange medium in the cooling flow path. Can be connected to at least one of a heating channel and a cooling channel. The Peltier element can be configured to move heat between the heat exchange medium in the cooling channel and the heat exchange medium in the heating channel (claim 4).

  In this case, at the time of initial air conditioning, the vehicle interior is heated by the positive amount of heat stored in the heat storage material in the heating storage tank, and by the negative amount of heat stored in the heat storage material in the cooling heat storage tank, respectively. The cabin is cooled. Further, in this vehicle air conditioning unit, by operating the Peltier element, for example, during cooling, the heat exchange medium in the cooling channel is always absorbed by the Peltier element, while on the other hand, in the heating channel The heat exchange medium is always radiated from the Peltier element. For this reason, it is also possible to store a positive amount of heat with respect to the heat storage material in the heating heat storage tank during cooling. For this reason, in this vehicle air-conditioning unit, it is difficult to cause a shortage of positive or negative amount of heat stored in each heat storage material for each heat storage material included in the heat storage tank for heating and the heat storage tank for cooling. For this reason, in this vehicle air conditioning unit, it is possible to air-condition the vehicle interior for a longer period of time by the heat stored in the heat storage materials of the heating heat storage tank and the cooling heat storage tank. For this reason, in this vehicle air conditioning unit, in addition to using the heat of the heat source connected to the heating flow path etc., it is also possible to perform heating or cooling as steady air conditioning in the same manner as the above initial air conditioning. is there.

  Furthermore, in this vehicle air conditioning unit, a heating heat exchanger and a cooling heat exchanger can be used simultaneously. In this case, as described above, it is possible to store a positive amount of heat in the heat storage material of the storage tank for heating during cooling. Therefore, by simultaneously using the heating heat exchanger and the cooling heat exchanger, the air heated by the heating heat exchanger and dehumidified is suitably cooled by the cooling heat exchanger. . For this reason, it becomes possible to dehumidify the vehicle interior by the air. Moreover, in this vehicle air conditioning unit, it is also possible to store a negative amount of heat in the heat storage material of the cooling storage tank during heating. For this reason, the temperature adjustment during heating is also attained by using the heating heat exchanger and the cooling heat exchanger at the same time.

  Moreover, in this vehicle air conditioning unit, it is preferable that the heating heat exchanger and the cooling heat exchanger have surface area expanding means for expanding the surface area relative to the surrounding air. In this case, the same effect as in the third aspect can be obtained for the heating heat exchanger and the cooling heat exchanger. Further, as the surface area expanding means of the heating heat exchanger and the cooling heat exchanger, the same one as in the third aspect can be adopted.

The vehicle air conditioning system of the present invention includes the above vehicle air conditioning unit;
A vehicle system in which a fourth inflow port for flowing out the heat exchange medium and a fourth inflow port for flowing in the heat exchange medium are formed, and exhaust heat is generated in the vehicle;
A heat exchanger for outside the vehicle, in which a fifth outlet for letting out the heat exchange medium and a fifth inlet for letting in the heat exchange medium are formed, and the surrounding air is discharged outside the passenger compartment;
A vehicle exterior channel connecting the fourth outlet and the fourth inlet to the connection channel, and connecting the fifth outlet and the fifth inlet;
And a second pump for circulating the heat exchange medium in the vehicle exterior passage (Claim 6).

  The vehicle air-conditioning system of the present invention includes a vehicle air-conditioning unit having the above-described configuration and characteristics, a vehicle system, and a vehicle exterior heat exchanger. The connection flow path, the vehicle system, and the vehicle exterior heat exchanger are connected via a vehicle exterior flow path. For this reason, in this vehicle air-conditioning system, it is possible to store a positive amount of heat in the heat storage material by exhaust heat of the vehicle system when not in use. Further, the heat exchange medium and the surrounding air exchange heat in the vehicle exterior heat exchanger, and the heat storage material can also store a positive amount of heat by the exchanged heat. In use, heating as a steady air conditioner is possible by exhaust heat of the vehicle system.

  As a vehicle system, in addition to a motor, an inverter, a converter, a hybrid engine, etc., a conventional internal combustion engine or the like can be adopted.

  Therefore, this vehicle air conditioning system can also air-condition the interior of the vehicle with energy saving while being excellent in mountability on the vehicle.

  The vehicle air conditioning system includes a switching valve that is provided in the connection channel and communicates or disconnects the connection channel and the vehicle exterior channel, and a control device that can control the switching valve. (Claim 7). In this case, it is possible to switch communication or non-communication between the connection flow path and the vehicle exterior flow path. For this reason, for example, at the time of initial air conditioning, the connection flow path and the flow path outside the passenger compartment can be disconnected, and at the time of steady air conditioning, the connection flow path and the flow path outside the passenger compartment can be communicated. Further, for example, when the vehicle is running in a mild climate and the vehicle air conditioning system is not used, the heat exchange medium heated by the vehicle system is prevented from flowing in the connection flow path. It is also possible.

  As the switching valve, an open / close valve that opens and closes only one flow path can be employed. A branch valve that can branch the flow path to another flow path can also be employed. As the branch valve, for example, a three-way valve that is connected to three flow paths and communicates the two flow paths while not communicating with one flow path can be employed.

1 is a schematic structural diagram of a vehicle air conditioning system according to Embodiment 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic three-dimensional view showing a vehicle air conditioning unit according to the vehicle air conditioning system of Example 1; FIG. 3 is a schematic structural diagram illustrating a state when positive heat is stored in the vehicle air conditioning system according to the first embodiment. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural diagram showing a state during initial air conditioning according to a vehicle air conditioning system of Example 1. FIG. 3 is a schematic structural diagram illustrating a state during heating operation as steady-state air conditioning in the vehicle air conditioning system according to the first embodiment. FIG. 3 is a schematic structural diagram showing a state during storage of a negative amount of heat according to the vehicle air conditioning system of the first embodiment. FIG. 3 is a schematic structural diagram illustrating a state during cooling operation as steady-state air conditioning in the vehicle air conditioning system according to the first embodiment. FIG. 3 is a schematic structural diagram of a vehicle air conditioning system according to a second embodiment. It is a model structure figure which shows the state at the time of the thermal storage of positive or negative calorie | heat amount concerning the vehicle air conditioning system of Example 2. FIG. FIG. 6 is a schematic structural diagram showing a state during heating operation as initial air conditioning, according to the vehicle air conditioning system of Example 2; FIG. 6 is a schematic structural diagram illustrating a state during heating operation as steady air conditioning in the vehicle air conditioning system according to the second embodiment. FIG. 6 is a schematic structural diagram illustrating a state during heating operation as steady air conditioning in the vehicle air conditioning system according to the second embodiment. FIG. 6 is a schematic structural diagram showing a state during cooling operation as initial air conditioning in the vehicle air conditioning system according to the second embodiment. FIG. 6 is a schematic structural diagram showing a state during cooling operation as steady-state air conditioning according to the vehicle air conditioning system of Example 2; FIG. 6 is a schematic structural diagram illustrating a state during a dehumidifying operation in the vehicle air conditioning system according to the second embodiment.

  Embodiments 1 and 2 embodying the present invention will be described below with reference to the drawings.

Example 1
The vehicle air conditioning system according to the first embodiment is mounted on a hybrid vehicle or an electric vehicle. As shown in FIG. 1, the vehicle air conditioning system includes a vehicle air conditioning unit 1, a vehicle system 3, and a radiator 5 as a heat exchanger for outside the vehicle compartment.

  The vehicle air conditioning unit 1 includes a water / air heat exchanger 7 as an in-vehicle heat exchanger, a heat storage tank 9, a water heat exchanger 11 as an auxiliary heat exchanger, and a Peltier element 13.

  As shown in FIG. 2, the water / air heat exchanger 7 is formed with a first outlet 7 a through which water as a heat exchange medium flows out and a first inlet 7 b through which water flows. Moreover, this water-air heat exchanger 7 has air-cooling fins 15 as a surface area expanding means. In addition, in FIG. 2, the arrow shown as a continuous line has shown the distribution direction of water. The same applies to FIGS. 3 to 7 and 9 to 15 described later.

  As shown in FIG. 1, an electric fan 7 c is provided near the air cooling fin 15. When the electric fan 7c is driven, the air around the air cooling fins 15 is supplied into the vehicle interior. The electric fan 7c is connected to a control device (not shown).

  The heat storage tank 9 is formed with a second outlet 9a through which water flows out and a second inlet 9b through which water flows in. The heat storage tank 9 is insulated from the surroundings. In addition, a heat storage material (not shown) is built in the heat storage tank 9, and water can be heated or cooled by positive or negative heat stored in the heat storage material. The heat storage tank 9 has a width of about 11 liters by setting the width and length to 300 mm and the depth to 130 mm. The volume of the heat storage tank 9 and the amount of the heat storage material incorporated in the heat storage tank 9 can be appropriately changed according to the size of the passenger compartment.

  The water-air heat exchanger 7 and the heat storage tank 9 are connected by pipes 17 and 18. The pipe 17 connects the first outlet 7 a of the water / air heat exchanger 7 and the second inlet 9 b of the heat storage tank 9. The pipe 18 connects the second outlet 9 a of the heat storage tank 9 and the first inlet 7 b of the water / air heat exchanger 7. The pipes 17 and 18 are vehicle interior passages. The pipe 17 is provided with a first pump P1 for circulating water. The first pump P1 is connected to a control device (not shown). Note that the first pump P1 may be provided in the pipe 18.

  The water heat exchanger 11 is formed with a third outlet 11a through which water flows out and a third inlet 11b through which water flows. One end of a pipe 21 is connected to the third outlet 11a, and one end of a pipe 22 is connected to the third inlet 11b. The other ends of the pipes 21 and 22 are connected to three-way valves 23a and 23b as switching valves. The pipes 21 and 22 are connection flow paths. The three-way valves 23a and 23b are each connected to a control device (not shown).

  The Peltier element 13 is provided between the water / air heat exchanger 7 and the water heat exchanger 11, and generates heat between the water in the water / air heat exchanger 7 and the water in the water heat exchanger 11. Move. The Peltier element 13 is connected to a battery (not shown). The battery is connected to a control device (not shown). Thereby, the control apparatus can change the direction and magnitude of the current supplied from the battery to the Peltier element 13.

  The vehicle system 3 includes heat generating parts such as a hybrid engine, an inverter, a motor, and a converter. The vehicle system 3 is formed with a water jacket (not shown), and the water jacket is formed with a fourth outlet 3a through which water flows out and a fourth inlet 3b through which water flows in.

  The radiator 5 is formed with a fifth outlet 5a through which water flows out and a fifth inlet 5b through which water flows in. An electric fan 5 c is provided near the radiator 5. By driving the electric fan 5c, the air around the radiator 5 is released to the outside of the passenger compartment, and the water in the radiator 5 can be heated by heat outside the passenger compartment. The electric fan 5c is connected to a control device (not shown).

  The vehicle system 3 and the radiator 5 are connected by pipes 25 to 28. The pipe 25 connects the fifth outlet 5 a of the radiator 5 and the fourth inlet 3 b of the vehicle system 3. The pipe 26 connects the fourth outlet 3a of the vehicle system 3 and the three-way valve 23b. The pipe 27 connects the three-way valve 23b and the three-way valve 23a. The pipe 28 connects the three-way valve 23 a and the fifth inlet 5 b of the radiator 5. These pipes 25 to 28 are vehicle exterior passages. The pipe 25 is provided with a second pump P2 for circulating water. The second pump P2 is connected to a control device (not shown). The second pump P2 may be provided in the pipe 26 or the pipe 28.

  In the vehicle air conditioning system configured as described above, the vehicle interior is air-conditioned in a state shown in FIGS. 3 to 7 in a cold environment and a hot environment. 3-7, the arrow shown with a broken line has shown the moving direction of heat. In the embodiment, a state in which the vehicle is parked is set as a specific example when not in use, and a state in which the vehicle is traveling is set as a specific example in use.

(In cold environment)
When not in use in a cold environment, as shown in FIG. 3, the control device controls the current supplied from the battery to the Peltier element 13, the water heat exchanger 11 side of the Peltier element 13 is the heat absorption side, Let the heat exchanger 7 be the heat radiation side. At this time, the control device controls the three-way valve 23a to connect the pipe 21 and the pipe 28 and to disconnect the pipes 21 and 28 and the pipe 27 from each other. Similarly, the control device controls the three-way valve 23b to make the pipe 22 and the pipe 26 communicate with each other and the pipes 22 and 26 and the pipe 27 are made to not communicate with each other. Further, the control device operates the electric fan 5c and the first and second pumps P1, P2. As a result, water circulates between the water-air heat exchanger 7 and the heat storage tank 9. Further, water circulates among the vehicle system 3, the water heat exchanger 11, and the radiator 5. For this reason, in the radiator 5, the air and water outside the passenger compartment exchange heat. The heat-exchanged water is absorbed by the Peltier element 13 in the water heat exchanger 11. And heat is radiated to the water in the water-air heat exchanger 7, and this water flows into the heat storage tank 9, whereby the heat storage material can store a positive amount of heat.

  Then, as shown in FIG. 4, as the initial use, that is, as the initial air conditioning, in the heat storage tank 9, the positive heat amount of the heat storage material heats the water, and the heated water flows into the water-air heat exchanger 7. The water heat exchanger 7 heats the surrounding air. Further, the control device operates the electric fan 7c. Thus, the air is supplied to the vehicle interior by the electric fan 7c, and the vehicle interior is heated. At this time, the control device stops the supply of power from the battery to the Peltier element 13, and stops the electric fan 5c. Further, the control device controls the three-way valve 23a to connect the pipe 27 and the pipe 28 and to disconnect the pipes 27 and 28 and the pipe 21 from each other. Similarly, the control device causes the pipe 26 and the pipe 27 to communicate with each other and the pipes 26 and 27 and the pipe 22 to communicate with each other. For this reason, at the time of initial air conditioning, water circulates between the vehicle system 3 and the radiator 5.

  Thus, in this vehicle air conditioning system, the temperature in the vehicle compartment can be increased in a short time by using the positive amount of heat stored in the heat storage material in the heating of the initial air conditioning. Moreover, in this vehicle air conditioning system, heating as the initial air conditioning can be realized with energy saving by using the positive amount of heat stored in the heat storage material.

  Further, as shown in FIG. 5, after the initial lapse of use, that is, in steady-state air conditioning, the control device controls the three-way valve 23a so that the pipe 21 and the pipe 28 communicate with each other, and the pipe 21 and the pipe 28 and the pipe are connected. 27 is not in communication. Similarly, the control device controls the three-way valve 23b to make the pipe 22 and the pipe 26 communicate with each other, and makes the pipe 22 and the pipe 26 and the pipe 27 non-communication. Further, the control device restarts the supply of power from the battery to the Peltier element 13 and stops the operation of the first pump P1. The direction of the current supplied from the battery to the Peltier element 13 is the same as that shown in FIG. For these reasons, water circulates between the vehicle system 3, the water heat exchanger 11, and the radiator 5, and the water circulation between the water-air heat exchanger 7 and the heat storage tank 9 stops. Thereby, the water in the water heat exchanger 7 is heated by the exhaust heat of the vehicle system 3, and the water heat exchanger 7 heats the surrounding air. This air is supplied to the vehicle interior by the electric fan 7c to heat the vehicle interior.

  Thus, in this vehicle air-conditioning system, the amount of exhaust heat from the vehicle system 3 is used for steady-state air conditioning, so that the vehicle interior can be heated for a long time while saving energy. As described above, the air conditioning capacity required for steady-state air conditioning is the ability to maintain the temperature in the passenger compartment for a long time. For this reason, the control device can control the battery and the Peltier element 13 can absorb heat from the water in the water heat exchanger 11 and dissipate heat to the water in the water-air heat exchanger 7 to such an extent that heating of the vehicle interior can be maintained. Electric power is supplied to the Peltier element 13. For this reason, in this vehicle air conditioning system, it is possible to reduce power consumption when the Peltier element 13 is used, and it is also possible to reduce the size of the Peltier element 13. In this case, in this vehicle air-conditioning system, the vehicle system 3 can also be cooled by the water that is absorbed in the water heat exchanger 11 and further radiated and cooled in the radiator 5. In addition, by operating the 1st pump P1 at the time of regular air-conditioning, a part of exhaust heat of the vehicle system 3 can also be stored as a positive calorie | heat amount in a thermal storage material.

(Under hot environment)
When not in use in a hot environment, as shown in FIG. 6, the control device performs control so that the current supplied from the battery to the Peltier element 13 is opposite to that in a cold environment. The exchanger 11 side is the exhaust heat side, and the water-air heat exchanger 7 is the heat absorption side. At this time, the control device controls the three-way valves 23a and 23b in the same manner as when a positive amount of heat is stored in a cold environment. Further, the control device operates the electric fan 5c and the first and second pumps P1 and P2. For this reason, water circulates similarly to the case of FIG. Thereby, as shown in FIG. 6, negative calorie | heat amount is stored in a thermal storage material. The amount of heat radiated to the water heat exchanger 11 side is released from the radiator 5 to the outside of the passenger compartment by the electric fan 5c.

  Then, as shown in FIG. 4, the control device controls the electric fan 7c, the switching valves 23a and 23b, and the first pump, as in the case of heating as the initial air conditioning. For this reason, the negative heat quantity of the heat storage material cools the water, the cooled water flows into the water heat exchanger 7, and the water heat exchanger 7 cools the surrounding air. The air is supplied to the vehicle interior by the electric fan 7c, so that the vehicle interior is cooled by the initial air conditioning. Thus, this vehicle air conditioning system can lower the temperature in the vehicle compartment in a short time during the cooling of the initial air conditioning. Further, this vehicle air conditioning system can realize cooling as initial air conditioning with energy saving.

  Moreover, in steady air conditioning, as shown in FIG. 7, the Peltier device 13 cools the water in the water-air heat exchanger 7, and the water-air heat exchanger 7 cools the surrounding air. Thus, the vehicle interior is cooled by steady air conditioning by the cooled air around the water-air heat exchanger 7. At this time, since it is a steady air conditioning, the air conditioning in the passenger compartment can be maintained even when the power consumption during the use of the Peltier element 13 is lowered, as in the case of the heating as the regular air conditioning. Further, at the time of steady air conditioning, the control device controls the three-way valve 23a, so that the pipe 21 and the pipe 28 are communicated, and the pipe 21, the pipe 28, and the pipe 27 are not communicated. Similarly, the control device controls the three-way valve 23b to make the pipe 22 and the pipe 26 communicate with each other, and makes the pipe 22 and the pipe 26 and the pipe 27 non-communication. For this reason, the amount of heat radiated to the water heat exchanger 11 is released from the radiator 5 to the outside of the passenger compartment by the electric fan 5c.

  Thus, in this vehicle air conditioning system, the air conditioning in the vehicle interior by the positive or negative heat quantity stored in the heat storage material is limited to the initial air conditioning. For this reason, the capacity | capacitance of the thermal storage tank 9 can be made into the required minimum magnitude | size which can perform initial air conditioning. Moreover, since this vehicle air-conditioning unit 1 employs the Peltier element 13, the control device can easily change the direction and magnitude of the current supplied from the battery to the Peltier element 13, thereby facilitating the heat absorption surface and heat dissipation. The surface can be switched and the temperature control can be easily changed. As a result, the vehicle air conditioning unit 1 can reduce the size of the housing, simplify the structure, and reduce the manufacturing cost. Similarly, the vehicle air conditioning system including the vehicle air conditioning unit 1 can be reduced in size and the manufacturing cost can be reduced.

  Moreover, in this vehicle air-conditioning unit 1, since it is sufficient that the heat storage tank 9 has only the minimum amount of heat storage material, even if the Peltier element 13 is used with low capacity during heat storage, it is sufficient for the heat storage material. A positive or negative amount of heat can be stored. Further, it is not necessary to use the Peltier element 13 for heating or cooling water during the initial air conditioning. Further, the use of the Peltier element 13 during steady air conditioning can be minimized. For this reason, the Peltier element 13 can be downsized. For this reason, in this vehicle air conditioning system, the power consumption by the Peltier element 13 can be reduced.

  Therefore, this vehicle air-conditioning system can air-condition the vehicle interior with energy saving while being excellent in mountability to the vehicle.

  In particular, since the vehicle air conditioning unit 1 can be connected to other internal combustion engines, it can be easily mounted on existing vehicles. For this reason, the new vehicle air conditioning system by the combination of this vehicle air conditioning unit 1 and an internal combustion engine can be comprised, and an air conditioning of a vehicle interior can be performed. Further, since the vehicle air conditioning unit 1 is small, it can be easily installed in the passenger compartment.

  The pipes 21 and 22 are provided with three-way valves 23a and 23b, respectively. For this reason, in this vehicle air conditioning system, for example, when the vehicle is running in a mild climate and air conditioning of the vehicle interior by this vehicle air conditioning system is unnecessary, the vehicle system is installed in the pipes 21 and 23. It is also possible to prevent the water heated by 3 from flowing.

  Further, as described above, the water / air heat exchanger 7 includes the air cooling fins 15 that radiate the heat of the water in the water / air heat exchanger 7. For this reason, the air cooling fins 15 can increase the surface area of the water / air heat exchanger 7 to efficiently dissipate heat. Thereby, more effective cooling or heating becomes possible.

(Example 2)
The vehicle air conditioning system according to the second embodiment includes a vehicle air conditioning unit 10, a vehicle system 3, and a radiator 5, as shown in FIG.

  The vehicle air conditioning unit 10 includes a heater core 31 as a heating heat exchanger, an evaporator 33 as a cooling heat exchanger, a heating heat storage tank 35, a cooling heat storage tank 37, and a Peltier element 13a. Yes.

  The heater core 31 is formed with a sixth outlet 31a through which water flows out and a sixth inlet 31b through which water flows. The heater core 31 has air cooling fins 15 integrally. An electric fan 31 c is provided near the air cooling fin 15. When the electric fan 31c is driven, the air around the air cooling fins 15 is supplied into the vehicle interior. The electric fan 31c is connected to a control device (not shown).

  The evaporator 33 is formed with a ninth outlet 33a through which water flows out and a ninth inlet 33b through which water flows. The evaporator 33 has air cooling fins 15 integrally. An electric fan 33 c is provided near the air cooling fin 15. When the electric fan 33c is driven, the air around the air cooling fins 15 is supplied into the vehicle interior. The electric fan 33c is connected to a control device (not shown).

  The heating heat storage tank 35 is formed with a seventh outlet 35a through which water flows out and a seventh inlet 35b through which water flows in. The surroundings of the heating heat storage tank 35 are insulated. Further, a heat storage material (not shown) is built in the heating heat storage tank 35, and water can be heated by the positive amount of heat stored in the heat storage material.

  The cooling heat storage tank 37 is formed with an eleventh outlet 37a through which water flows out and an eleventh inlet 37b through which water flows. The cooling heat storage tank 37 is insulated from the surroundings. Further, a heat storage material (not shown) is built in the cooling heat storage tank 37, and water can be cooled by the negative amount of heat stored in the heat storage material.

  One surface side heat exchanger 39 is provided on one surface side of the Peltier element 13a. The one-surface-side heat exchanger 39 is formed with an eighth outlet 39a through which water flows out and an eighth inlet 39b through which water flows in. Further, the other surface side heat exchanger 41 is provided on the other surface side of the Peltier element 13. The other surface side heat exchanger 41 is formed with a tenth outlet 41a through which water flows out and an eighth inlet 41b through which water flows in.

  The Peltier element 13a moves heat between the water in the one-side heat exchanger 39 and the water in the other-side heat exchanger 41. Other configurations are the same as the Peltier element 13 in the vehicle air conditioning system (vehicle air conditioning unit 1) of the first embodiment.

  The heater core 31, the heating heat storage tank 35, and the one-side heat exchanger 39 are connected by pipes 43 to 51. The pipe 43 and the pipe 44 are connected via a three-way valve 23c, and the pipe 44 and the pipe 45 are connected via a three-way valve 23d. The pipe 45 and the pipe 46 are connected via a three-way valve 23e, and the pipe 46 and the pipe 47 are connected via a three-way valve 23g. The pipe 49 and the pipe 50 are connected via a three-way valve 23h, and the pipe 50 and the pipe 51 are connected via a three-way valve 23f. The piping 47 is provided with a first heating pump P3. The three-way valves 23c to 23h and the first heating pump P3 are each electrically connected to a control device (not shown). In addition, the piping 43-51 is corresponded to the flow path for heating.

  One end of the pipe 21 is connected to the three-way valve 23c, and the other end of the pipe 21 is connected to the three-way valve 23a. One end of the pipe 22 is connected to the three-way valve 23d, and the other end of the pipe 22 is connected to the three-way valve 23b.

  One end of a pipe 61 is connected to the three-way valve 23e, and the other end of the pipe 61 is connected to the three-way valve 23f. One end of a pipe 62 is connected to the three-way valve 23g, and the other end of the pipe 62 is connected to the three-way valve 23h.

  The evaporator 33, the cooling heat storage tank 37, and the other surface side heat exchanger 41 are connected by pipes 52 to 56. The pipe 52 and the pipe 53 are connected via a three-way valve 23i, and the pipe 55 and the pipe 56 are connected via a three-way valve 23j. The piping 55 is provided with a first cooling pump P4. The three-way valves 23i and 23j and the cooling first pump P4 are electrically connected to a control device (not shown). The pipes 52 to 56 correspond to cooling channels.

  One end of a pipe 63 is connected to the three-way valve 23i, and the other end of the pipe 63 is connected to the three-way valve 23j. Other configurations are the same as those of the vehicle air conditioning system of the first embodiment, and the same components are denoted by the same reference numerals, and detailed description of the configurations is omitted.

  In the vehicle air conditioning system configured as described above, the vehicle interior is air-conditioned in a state shown in FIGS. 9 to 15 in a cold environment and a hot environment. In addition, in FIGS. 9-15, the arrow shown with a broken line has shown the moving direction of heat. Each state when not in use and at the time of use is the same as in the first embodiment.

(In cold environment)
When not in use in a cold environment, as shown in FIG. 9, the control device controls the current supplied from the battery to the Peltier element 13a, the other side heat exchanger 41 side of the Peltier element 13a is the heat absorption side, The Peltier element 13a is operated with the one side heat exchanger 39 side as the heat dissipation side. At this time, the control device controls the three-way valve 23g to connect the piping 47 and the piping 62 and to disconnect the piping 47, 62 and the piping 46 from each other. Similarly, the control device controls the three-way valve 23h to connect the pipe 49 and the pipe 62 and to disconnect the pipes 49 and 62 and the pipe 50 from each other. In addition, the control device controls the three-way valve 23i to make the pipe 53 and the pipe 63 communicate with each other and to make the pipes 53 and 63 and the pipe 52 non-communication. Then, the control device controls the three-way valve 23j to make the pipe 55 and the pipe 63 communicate with each other and to make the pipes 55 and 63 and the pipe 52 non-communication. In this state, the control device operates the first pumps P3 and P4 for heating and cooling, respectively. As a result, water circulates in the direction of the solid arrow in FIG. 9 in the heating channel and the cooling channel. Thus, a positive amount of heat is stored in the heat storage material in the heating heat storage tank 35, and a negative amount of heat is stored in the heat storage material in the cooling heat storage tank 37. Note that, by not operating the first cooling pump P4, only the heat storage material in the heating heat storage tank 35 can be in a state in which a positive amount of heat is stored.

  And at the time of initial air-conditioning, as shown in FIG. 10, the control device controls the three-way valve 23c to connect the piping 43 and the piping 44 and to disconnect the piping 43, 44 and the piping 21. Similarly, the control device controls the three-way valve 23d to connect the piping 44 and the piping 45 and to disconnect the piping 44, 45 and the piping 22 from each other. In addition, the control device controls the three-way valve 23e so that the pipe 45 and the pipe 46 are communicated, and the pipes 45 and 46 and the pipe 61 are not communicated. Then, the control device controls the three-way valve 23g to cause the piping 46 and the piping 47 to communicate with each other, and the piping 46, 47 and the piping 62 to be disconnected. In addition, the control device controls the three-way valve 23h to make the pipe 49 and the pipe 50 communicate with each other and to make the pipes 49 and 50 and the pipe 62 non-communication. Further, the control device controls the three-way valve 23f to make the pipe 50 and the pipe 51 communicate with each other and to make the pipes 51 and 52 and the pipe 61 non-communication.

  Thereby, in the heat storage tank 35 for heating, the positive calorie | heat amount of a thermal storage material heats water, the heated water flows in into the heater core 31, and the heater core 31 heats surrounding air. Further, the control device operates the electric fan 31c. In this way, this air is supplied into the passenger compartment and the passenger compartment is heated. At this time, the control device stops supplying power from the battery to the Peltier element 13a and the first cooling pump P4.

  In this vehicle air conditioning system, in the above state, the controller can operate the Peltier element 13a with the one side heat exchanger 39 side as a heat radiating surface, thereby enabling heating as steady air conditioning. Become. At this time, the control device only needs to heat the water in the one-side heat exchanger 39 to such an extent that the heating of the passenger compartment can be maintained, and the power consumption of the Peltier element 13a can be reduced.

  Further, at the time of steady air conditioning, the control device controls the three-way valve 23a to make the pipe 27 and the pipe 28 communicate with each other and to make the pipes 27 and 28 and the pipe 21 non-communication with the start of traveling of the vehicle. Similarly, the control device causes the pipe 26 and the pipe 27 to communicate with each other and the pipes 26 and 27 and the pipe 22 to communicate with each other. Further, the control device operates the second pump P2.

  In this vehicle air conditioning system, heating as steady air conditioning can be performed in the state shown in FIG. That is, the control device controls the three-way valves 23 a and 23 b to connect the pipes 28 and 43 via the pipe 21. At this time, the pipes 21 and 28 and the pipe 27 are not communicated, and the pipes 21 and 43 and the pipe 44 are not communicated. Similarly, the control device causes the pipes 26 and 45 to communicate with each other via the pipe 22 by controlling the three-way valves 23b and 23d. At this time, the pipes 22 and 26 and the pipe 27 are not connected, and the pipes 22 and 45 and the pipe 44 are not connected.

  Accordingly, the vehicle interior can be heated by the exhaust heat of the vehicle system 3 while the heat storage material in the heating heat storage tank 35 is heated by the exhaust heat of the vehicle system 3. In this case, the heat storage material in the heating heat storage tank and the water (hot water) heated by the exhaust heat of the vehicle system 3 are radiated by the heater core 31 and the radiator 5. For this reason, the vehicle system 3 can be cooled by the suitably cooled water. In addition, the control apparatus can adjust the supply amount of the electric power with respect to the Peltier element 13a as needed from the heating state of a vehicle interior, or can stop the action | operation of the Peltier element 13a. The control device can also stop the operation of the heating first pump P3 or the second pump P2.

  Furthermore, in this vehicle air conditioning system, during the heating described above, the first heat pump P4 is operated as necessary to store a negative amount of heat in the heat storage material in the heat storage tank 37 for cooling. it can. Thereby, it becomes difficult to occur that the amount of negative heat stored in the heat storage material in the cooling heat storage tank 37 is insufficient. The negative amount of heat stored in this case can be used not only for cooling the passenger compartment in a hot environment but also for temperature adjustment during heating.

  From the above state, as shown in FIG. 12, the control device controls the three-way valves 23 e and 23 f to connect the pipes 45 and 51 via the pipe 61. At this time, the pipes 45 and 61 and the pipe 46 are not communicated, and the pipes 51 and 61 and the pipe 49 are not communicated. Similarly, the control device causes the pipes 47 and 49 to communicate with each other via the pipe 62 by controlling the three-way valves 23g and 23h. Further, the control device operates the second pump P2. Thus, the vehicle interior can be heated by the heat of the exhaust heat 3 of the vehicle system without going through the heat storage tank 35 for heating.

  In this case, the control device operates the first heating pump P <b> 3 to circulate water between the pipes 47 to 49 through the pipe 62. At this time, the control device operates the Peltier element 13a in a state where the one surface side heat exchanger 39 side is the heat radiation surface. Thereby, it is possible to store a positive amount of heat in the heat storage material in the heat storage tank 35 for heating. If necessary, the first heat pump P4 may be operated to store a negative amount of heat in the heat storage material in the heat storage tank 37 for cooling.

(Under hot environment)
Even when not in use in a hot environment, the amount of negative heat can be stored in the heat storage material in the cooling heat storage tank 37 by setting the state shown in FIG. At the same time, a positive amount of heat can be stored in the heat storage material in the heating heat storage tank 35.

  And at the time of initial air-conditioning, as shown in FIG. 13, a control apparatus controls the three-way valve 23i, makes the piping 52 and the piping 53 connect, and makes the piping 52, 53, and the piping 63 non-communication. Similarly, the control device controls the three-way valve 23j to connect the pipe 55 and the pipe 56 and to disconnect the pipes 55 and 56 and the pipe 63 from each other. Thereby, the water cooled by the heat storage material in the cooling heat storage tank 37 flows into the evaporator 33, and the evaporator 33 cools the surrounding air. Further, the control device operates the electric fan 33c. In this way, this air is supplied into the vehicle interior and the vehicle interior is cooled. At this time, the control device stops supplying power from the battery to the Peltier element 13a and the first heating pump P3.

  Further, in this vehicle air conditioner, in the above state, the control device operates the Peltier element 13a with the other side heat exchanger 41 side as the heat absorbing surface, thereby enabling cooling as steady air conditioning. . At this time, the control device only has to cool the water in the other-surface heat exchanger 41 to such an extent that the cooling of the vehicle interior can be maintained, and the power consumption of the Peltier element 13a can be reduced. Further, in this state, as shown in FIG. 14, the control device operates the first heating pump P3, so that the heat storage material in the heating heat storage tank 35 can store a positive amount of heat. This makes it difficult for the amount of positive heat stored in the heat storage material in the heating heat storage tank 35 to be insufficient.

  Further, in this vehicle air conditioning system, the control device operates the first pumps P3 and P4 for heating and cooling and also operates the electric fans 31d and 33d. At the same time, the control device controls the switching valves 23c to 23j and connects the pipes 43 to 51 and the pipes 52 to 56 in the state shown in FIG. Thereby, the heater core 31 and the evaporator 33 can be operated simultaneously. In this case, the air heated by the heater core 31 and dehumidified is suitably cooled by the evaporator 33. For this reason, it becomes possible to dehumidify the vehicle interior by the air. Other functions and effects are similar to those of the vehicle air conditioning system of the first embodiment.

  In the above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the first and second embodiments described above, and it is needless to say that the present invention can be appropriately modified and applied without departing from the spirit of the present invention. Absent.

  For example, in the vehicle air conditioning system according to the first and second embodiments, a detection unit capable of detecting the temperature of each water in the heat storage tank 9, the heating heat storage tank 35, and the cooling heat storage tank 39 is provided. Based on the detected water temperature, Peltier elements 13, 13a, switching valves 23a-23j, electric fans 7c, 31c, 33c, first and second pumps P1, P2, heating first pump P3 and cooling first pump Each control of P4 can also be performed.

  In the vehicle air conditioning system of the first embodiment, the vehicle air conditioning system can be configured by connecting the pipe 22 and the pipe 25 and connecting the pipe 21 and the pipe 26. In addition, the vehicle air conditioning system can be configured by connecting the pipe 22 and the pipe 26 and connecting the pipe 21 and the pipe 25.

  Moreover, in the vehicle air conditioning system of Example 1, 2, it can replace with the three-way valves 23a-23j, and can also employ | adopt an on-off valve. In this case, the vehicular air conditioning system according to the first and second embodiments is not limited to being configured only by the on / off valve, but may be configured by combining the on / off valve and the three-way valve.

  In the vehicle air conditioning system according to the first embodiment, a dehumidifying device that dehumidifies the air around the water-air heat exchanger 7 may be provided.

  The vehicle air conditioning system of the present invention can be used for a vehicle using an internal combustion engine in addition to a vehicle such as a hybrid vehicle or an electric vehicle.

7a: First outlet 7b: First inlet 7: Water-air heat exchanger (indoor heat exchanger)
9a ... 2nd outflow port 9b ... 2nd inflow port 9 ... Thermal storage tank 17, 18, 21, 22, 25-28, 43-56 ... Piping (17, 18 ... Passage for vehicle interior, 21, 22 ... Connection flow Road, 25-28 ... Passenger outside passage, 43-51 ... Heating passage, 52-56 ... Cooling passage)
P1 ... 1st pump 13 ... Peltier element 1 ... Vehicle air conditioning unit 11a ... 3rd outflow port 11b ... 3rd inflow port 11 ... Water heat exchanger (sub heat exchanger)
15 ... Air-cooled fin (surface area expansion means)
31 ... Heater core (heat exchanger for heating)
33 ... Evaporator (cooling heat exchanger)
35 ... Heat storage tank for heating 37 ... Heat storage tank for cooling P3 ... First pump for heating P4 ... First pump for cooling 3a ... Fourth outlet 3b ... Fourth inlet 3 ... Vehicle system 5a ... Fifth outlet 5b ... 5th inlet 5 ... Radiator (External heat exchanger)
P2 ... Second pump 23a, 23b ... Three-way valve (switching valve)

Claims (7)

An in-vehicle heat exchanger in which a first inflow port through which the heat exchange medium flows out and a first inflow port through which the heat exchange medium flows are formed, and surrounding air is supplied into the vehicle interior;
A second outlet for letting out the heat exchange medium and a second inlet for letting in the heat exchange medium are formed, and has a heat storage material, and the amount of heat stored in the heat storage material can be exchanged with the heat exchange medium. A heat storage tank,
A vehicle interior channel connecting the first outlet and the second inlet, and connecting the second outlet and the first inlet;
A first pump for circulating the heat exchange medium in the vehicle interior passage;
A connection channel that can be connected to an external heat source;
An air conditioning unit for a vehicle comprising: a heat exchange medium in the in-vehicle flow path and a Peltier element that moves heat between the heat exchange medium in the connection flow path. A sub-heat exchanger having a third outlet for allowing the heat exchange medium to flow out and a third inlet for allowing the heat exchange medium to flow;
The connection flow path communicates with the third outlet and the third inlet,
The vehicle air conditioning unit according to claim 1, wherein the Peltier element moves heat between the in-vehicle heat exchanger and the auxiliary heat exchanger.   The vehicle air conditioning unit according to claim 1 or 2, wherein the in-vehicle heat exchanger has a surface area expanding means for expanding a surface area relative to surrounding air. The in-vehicle heat exchanger comprises a heating heat exchanger and a cooling heat exchanger,
The heat storage tank consists of a heat storage tank for heating and a heat storage tank for cooling,
The vehicle interior channel includes a heating channel that connects the heating heat exchanger and the heating heat storage tank, and a cooling channel that connects the cooling heat exchanger and the cooling heat storage tank. And consist of
The first pump is composed of a first heating pump that circulates the heat exchange medium in the heating channel, and a first cooling pump that circulates the heat exchange medium in the cooling channel,
The connection channel is connected to at least one of the heating channel and the cooling channel;
The vehicle air conditioning unit according to claim 1, wherein the Peltier element moves heat between the heat exchange medium in the cooling channel and the heat exchange medium in the heating channel.   5. The vehicle air conditioning unit according to claim 4, wherein the heating heat exchanger and the cooling heat exchanger have surface area expanding means for expanding a surface area with respect to surrounding air. The vehicle air conditioning unit according to any one of claims 2 to 5,
A vehicle system in which a fourth inflow port for flowing out the heat exchange medium and a fourth inflow port for flowing in the heat exchange medium are formed, and exhaust heat is generated in the vehicle;
A heat exchanger for outside the vehicle, in which a fifth outlet for letting out the heat exchange medium and a fifth inlet for letting in the heat exchange medium are formed, and the surrounding air is discharged outside the passenger compartment;
A vehicle exterior channel connecting the fourth outlet and the fourth inlet to the connection channel, and connecting the fifth outlet and the fifth inlet;
A vehicular air conditioning system, comprising: a second pump that circulates the heat exchange medium in the flow path outside the passenger compartment. A switching valve provided in the connection flow path, wherein the connection flow path and the vehicle exterior flow path are in communication or non-communication;
The vehicle air conditioning system according to claim 6, further comprising a control device capable of controlling the switching valve.

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