JP2010167988A - Ventilation heat recovery system and vehicular air conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation heat recovery system for improving heat recovery efficiency during recovering ventilation heat with a simple structure in which a ventilation heat recovery device and a coolant circulation system of the vehicular air conditioning device are respectively independent. <P>SOLUTION: The ventilation heat recovery system includes an inside air delivery passage 4 communicating the inside and outside of the cabin and delivering air in the cabin from inside of the cabin to outside of the cabin, an outside air introduction passage 5 communicating the inside and outside of the cabin and introducing the outside air from outside of the cabin to inside of the cabin, the ventilation heat recovery device 6 provided at the inside air delivery passage 4 and recovering the heat of the air delivered from the inside air delivery passage 4, a recovery heat radiator 7 provided at the outside air introduction passage 5 and radiating the heat to the air introduced from the outside air introduction passage 5, a heat transfer means 8 transferring the heat between the ventilation heat recovery device 6 and the recovery heat radiator 7, and a heat storage device 20 provided at the heat transfer means 8 and storing heat transferred by the heat transfer means 8, thus being independent from the coolant circulation system (heat pump cycle) 9 of the vehicular air conditioning device 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner, and more particularly to a ventilation heat recovery system and a vehicle air conditioner that recover ventilation heat and use it for vehicle air conditioning.

  In general, when the vehicle interior is heated by heating, the engine cooling water is circulated into the vehicle interior, and the air is heated by a heater core.

  However, as the efficiency of the engine increases, a low heat generation engine or the like has been used, and it has become difficult to use exhaust heat from the engine. Furthermore, in an automobile such as an electric vehicle that does not have an engine, it is necessary to heat the vehicle without using exhaust heat from the engine.

  For this reason, conventionally, a method has been proposed in which an air-conditioner cycle used as an air conditioner for automobiles is applied and heating is possible with a refrigerant such as chlorofluorocarbon. This method is a method in which the refrigerant circulating in the cooling circulation system used for cooling is circulated in the opposite direction to that for cooling so that heating is also possible. This is a system called a heat pump cycle, which is a method of heating the cool air introduced into the outside air by introducing it into the evaporator during cooling.

  In this method, since the temperature of the air blown into the passenger compartment by the power of the compressor is adjusted to an appropriate temperature, when the cold air introduced into the outside air has a low outside air temperature such as −20 ° C., the power of the compressor is reduced. Requires a large amount.

  On the other hand, in the case of an electric vehicle or the like, since the cruising distance changes according to the power consumption, it is necessary to reduce the power consumption due to heating as much as possible. For this purpose, it is desired to reduce the ventilation load during heating. It is rare.

  Therefore, for example, an automotive air conditioner that employs a method of heating using a heat pump cycle, and is disposed in a ventilation internal air outlet path that communicates the interior and exterior of the vehicle interior and derives the air inside the vehicle interior to the exterior of the vehicle interior. A technique has been proposed in which an exhaust heat recovery device (exhaust heat recovery device) is connected in parallel to a heat pump cycle (see, for example, Patent Document 1).

  According to the configuration described in Patent Document 1, when the outside air is introduced and heated, the cooling flows not only to the heat pump cycle but also to the exhaust heat recovery unit. It can be pumped up and wasteful consumption of energy can be prevented.

  However, according to the configuration described in Patent Document 1, since the pipe that communicates the exhaust heat recovery device and the heat pump cycle is integrated with the heat pump cycle, the refrigerant that flows in the heat pump cycle and the refrigerant that flows in the pipe And are shared. For this reason, it is difficult to newly attach such a pipe line to an existing heat pump cycle. Further, when such a pipe line is provided, it is necessary to provide a controller, a solenoid valve, etc. in order to control the flow of the refrigerant, which not only complicates the circuit but also increases the number of parts and the structure. Become. In addition, since the structure is complicated, the entire temperature control system is affected, so that practical use is difficult.

Japanese Utility Model Publication No. 6-6024

  The present invention has been made in view of the above circumstances, and has a simple structure in which the ventilation heat recovery device and the refrigerant circulation system of the vehicle air conditioner are independent of each other, and improves the heat recovery efficiency during the recovery of the ventilation heat. An object of the present invention is to provide a ventilating heat recovery system and a vehicle air conditioner using the same.

  According to one aspect of the present invention, the inside and outside of the vehicle interior communicates, and the inside air outlet path for deriving the air inside the vehicle compartment from the interior of the vehicle interior to the outside of the vehicle interior communicates with the outside of the vehicle interior and introduces the outside air from the outside of the vehicle interior to the interior of the vehicle interior. A ventilation heat recovery unit for recovering heat of the air derived from the internal air extraction path, and an external air introduction path for providing heat to the air introduced from the external air introduction path. A recovered heat radiator that dissipates heat, a heat transfer means that transfers heat between the ventilation heat recoverer and the recovered heat radiator, and a heat accumulator that is provided in the heat transfer means and stores heat transferred by the heat transfer means. And a ventilation heat recovery system that is independent of the refrigerant circulation system of the vehicle air conditioner.

  According to the other aspect of this invention, it makes it a summary to be an air conditioning apparatus for vehicles which has the ventilation heat recovery system of any one of Claims 1-6.

  According to the present invention, a ventilation heat recovery system capable of improving the heat recovery efficiency at the time of recovery of ventilation heat, and a simple structure in which the ventilation heat recovery unit and the refrigerant circulation system of the vehicle air conditioner are independent of each other, and The used vehicle air conditioner can be provided.

1 is a plan perspective view from above of a vehicle provided with a ventilation heat recovery system according to a first embodiment of the present invention and a vehicle air conditioner using the same. It is an enlarged view which shows the detail of the heat transfer means of the ventilation heat recovery system which concerns on the 1st Embodiment of this invention. It is a table | surface which shows the control which the 1st control valve and 2nd control valve of the ventilation heat recovery system which concern on the 1st Embodiment of this invention perform. It is a graph which shows the image for the amount of thermal energy recovery by the heat accumulator of the ventilation heat recovery system which concerns on the 1st Embodiment of this invention. It is an enlarged view which shows the detail of the heat transfer means of the ventilation heat recovery system which concerns on the 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in light of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

(First embodiment)
FIG. 1 is a perspective plan view showing a state in which a vehicle 100 provided with a ventilation heat recovery system 1 and a vehicle air conditioner 2 using the ventilation heat recovery system 1 according to the first embodiment of the present invention is viewed from above. is there. In FIG. 1, the front direction of the car 100 is shown facing left.

  As shown in FIG. 1, the ventilation heat recovery system 1 according to the first embodiment of the present invention communicates with the outside of the vehicle interior, and extracts the air in the vehicle interior from the vehicle interior to the outside of the vehicle interior. A ventilation heat recovery device that communicates with the outside of the vehicle interior and that is provided in the outside air introduction passage 5 for introducing outside air from the outside of the vehicle compartment to the inside of the vehicle compartment and the inside air outlet passage 4 and collects the heat of the air derived from the inside air outlet passage 4. 6 is provided in the outside air introduction path 5 and transfers heat between the recovery heat radiator 7 that radiates heat to the air introduced from the outside air introduction path 5, and the ventilation heat recovery unit 6 and the recovery heat radiator 7. A heat transfer means 8 and a heat accumulator 20 provided in the heat transfer means 8 for storing heat transferred by the heat transfer means 8, and independent of the refrigerant circulation system (heat pump cycle) 9 of the vehicle air conditioner 2. ing.

  The inside air outlet passage 4 and the outside air introduction passage 5 are passages having one end opened to the vehicle interior side and the other end opened to the vehicle compartment outside.

  The inside air outlet path 4 is provided with a ventilation fan 19 for blowing the air in the vehicle compartment derived from the inside air outlet path 4 to the ventilation heat recovery unit 6. The ventilation fan 19 has a role of helping air in the inside air outlet passage 4 to be blown to the ventilation heat recovery unit 6, and thus is provided in the inside air outlet passage 4 and inside the ventilation heat recovery unit 6.

  In addition, the ventilation in the passenger compartment is introduced and led out by the ram pressure generated by traveling, and the ventilation fan 19 may not be necessary.

  In the present embodiment, the outside air introduction path 5 will be described as being independent of the inside air circulation path. For example, the outside air introduction path 5 and the outside air introduction path 5 are joined, and the inside air circulation path is closed. When the outside air introduction path 5 is opened, the outside air introduction path 5 is formed including the merged portion.

  A refrigerant circulation system 9 used for cooling is provided on the front side of the car 100. The refrigerant circulation system 9 is composed of a condenser 10, a liquid tank 11, a compressor 12, an evaporator 13, and an expansion valve 14. By circulating the refrigerant, cold air flows from the evaporator 13 located in the outside air introduction path 5 into the vehicle interior. .

  Furthermore, a heat source 3 and a heater core 15 such as an engine and a hot water generator used for heating are provided on the front side of the car 100. The heater core 15 is located near the opening on the vehicle interior side of the evaporator 13 in the outside air introduction path 5.

  FIG. 2 is a partially enlarged view showing details of the heat transfer means 8 of FIG. As shown in FIG. 2, the heat transfer means 8 is a path through which the heat transfer medium 17 flows from the ventilation heat recovery unit 6 toward the recovery heat radiator 7, a path through the heat storage unit 20, and a heat storage unit. A first path 16a having a first bypass path 22a that connects the inlet and the outlet of 20 and bypasses without passing through the regenerator 20, and a medium for heat transfer from the recovered heat radiator 7 toward the ventilation heat recovery apparatus 6 17 is a path through which the second path 16b has a path that passes through the regenerator 20, a second bypass path 22b that connects the inlet and outlet of the regenerator 20 and bypasses without passing through the regenerator 20. A first control valve 23a that is provided in the first path 16a and controls whether or not to pass through the first bypass path 22a, and is provided in the second path 16b and controls whether or not to pass through the second bypass path 22b. The second control valve 23b Obtain.

  The heat transfer means 8 is provided with a water pump 18 for circulating a medium 17 such as an antifreeze liquid through a system constituted by the ventilation heat recovery device 6, the first path 16a, the recovery heat radiator 7, and the second path 16b. Yes.

  The first path 16a and the second path 16b are pipes through which a medium 17 such as an antifreeze liquid flows. The first path 16a and the second path 16b are preferably covered with a heat insulating material or the like in order to prevent heat from being radiated to the outside.

  Inside the heat accumulator 20, there are a first heat exchange section 21a and a second heat exchange section 21b connected to the first path 16a and the second path 16b, respectively, and the first heat exchange section 21a and the second heat exchange section 21b. A heat storage material (not shown) is filled between the portion 21 b and the heat storage device 20. The first heat exchange unit 21a and the second heat exchange unit 21b exchange heat with the medium 17 flowing in each of the first path 16a and the second path 16b. The heat storage material can perform heat exchange by storing heat from the medium 17 or dissipating the stored heat to the medium 17 via the first heat exchange unit 21a and the second heat exchange unit 21b. The heat storage material is preferably fluid and may change phase. As the heat storage material, for example, an antifreeze, paraffin, inorganic salt, or the like can be used. It is preferable that the heat storage device 20 has a function of stirring the heat storage material.

  Next, the effect | action at the time of heating with the ventilation heat recovery system 1 which concerns on 1st Embodiment, and the vehicle air conditioner 2 using the same is demonstrated.

  When the vehicle interior is warmed by heating, the water heated by the heat source 3 is circulated to the vehicle interior side. However, when the inside air circulation is performed, the window is clouded due to humidity generated by a person. For this reason, outside air is usually introduced. At this time, warm air is sent into the vehicle interior by heating the outside air introduced from the outside air introduction path 5 by the heater core 15.

  Further, the air in the vehicle compartment is led out from the inside air outlet passage 4 by ventilation, and is blown to the ventilation heat recovery unit 6 by the ventilation fan 19, so that heat exchange with the medium 17 inside the ventilation heat recovery unit 6 is performed. This is done to recover the warm heat in the passenger compartment.

  Then, the medium 17 is circulated by the water pump 18 so that the medium 17 flows from the ventilation heat recovery device 6 through the first path 16a. When the circulating medium 17 reaches the first control valve 23a, the first control valve 23a connects the path through which the medium 17 passes through the heat accumulator 20, and the inlet and outlet of the heat accumulator 20, and does not pass through the heat accumulator 20. Which of the first bypass paths 22a to be bypassed is controlled.

  As the control performed by the first control valve 23a, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature (for example, 25 ° C.), When the room temperature is also lower than the vehicle interior set temperature, the medium 17 is controlled to pass through the first bypass path 22a.

  As the control performed by the first control valve 23a, as shown in the second row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is higher than the indoor set temperature, the medium 17 performs control through the first bypass path 22a.

  Further, as the control performed by the first control valve 23a, as shown in the third row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is When the temperature is lower than the indoor set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the first heat exchange unit 21 a in the regenerator 20, and the heat of the regenerator 20 is radiated to the medium 17.

  Further, the medium 17 is circulated by the water pump 18, so that the medium 17 reaches the recovered heat radiator 7. Then, heat is exchanged between the cold air of the outside air introduced into the outside air introduction path 5 and the medium 17 in the recovered heat radiator 7 to warm the outside air in the outside air introduction path 5.

  Thereafter, the air warmed by the ventilation heat recovery system 1 is further warmed by the heater core 15 and is blown into the passenger compartment to warm the passenger compartment.

  In addition, the medium 17 after being radiated by the recovered heat radiator 7 reaches the second control valve 23b through the second path 16b. When the medium 17 reaches the second control valve 23b, the second control valve 23b bypasses the path through which the medium 17 passes through the regenerator 20 and the inlet and outlet of the regenerator 20 without passing through the regenerator 20. Which of the second bypass paths 22b to be routed is controlled.

  As the control performed by the second control valve 23b, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature, and the vehicle interior temperature in the vehicle interior is also set in the vehicle interior. When the temperature is lower than the temperature, the medium 17 is controlled to pass through the second bypass path 22b.

  Further, as the control performed by the second control valve 23b, as shown in the second row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is When the temperature is higher than the indoor set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the second heat exchange unit 21 b in the regenerator 20, and the heat of the medium 17 is stored in the regenerator 20. The image of the heat energy recovered by heat storage corresponds to the shaded area shown in the graph of FIG.

  Further, as the control performed by the second control valve 23b, as shown in the third row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is lower than the indoor set temperature, the medium 17 is controlled to pass through the second bypass path 22b.

  Thereafter, the medium 17 is further circulated by the water pump 18, so that the medium 17 returns to the ventilation heat recovery device 6.

  According to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, when the outside air is introduced and the vehicle interior is heated, once the temperature in the vehicle interior is raised, In order to reuse the air in the passenger compartment without throwing it away, it is necessary to heat the outside air only by the temperature that is lowered when the medium 17 is circulated and the heat is transferred. This is because, for example, when the outside air is a low outside air of −20 ° C., the outside air introduced from the outside air introduction path 5 can be warmed to near 0 ° C. by radiating heat from the recovered heat radiator 7. For this reason, only the power consumption equivalent to 0 degreeC outside air is required, and the useless consumption of energy can be reduced.

  Further, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, the ventilation heat recovery system 1 is independent of the vehicle air conditioner 2, and therefore the medium 17. Is not shared, and when retrofitting the ventilation heat recovery system 1 to an existing air conditioner, a controller for controlling the flow of the medium 17, a solenoid valve or the like is not required, and a temperature control system It does not affect the whole.

  Moreover, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, the temperature difference between the medium temperature and the room temperature is stable after the recovery operation is continuously performed. Come on. At that time, the medium 17 is caused to flow to the second heat exchanging portion 21b of the heat accumulator 20 to dissipate heat to the heat storage material, and the temperature of the medium 17 decreases and the temperature difference from the room temperature increases, so the heat exchange efficiency is increased. Heat can be stored in the heat storage material while improving.

  Moreover, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, when the temperature of the heat storage material of the heat accumulator 20 is high and the temperature in the vehicle interior is low. In the heat accumulator 20, heat exchange is performed between the medium 17 and the heat accumulating material, and the heat of the heat accumulator 20 is radiated to the medium 17, thereby increasing the intake air temperature into the vehicle interior and improving the heating capacity. Contribute to.

  Further, according to the ventilation heat recovery system 1 and the vehicle air conditioner 2 using the same according to the first embodiment, a simple structure in which the heat accumulator 20 is added without greatly modifying the ventilation heat recovery system. By doing so, an increase in cost can be suppressed.

(Second Embodiment)
As shown in FIG. 5, the ventilation heat recovery system 1 according to the second embodiment of the present invention has a medium 17 in the heat transfer means 8 as compared with the ventilation heat recovery system 1 according to the first embodiment. The difference is that a temperature sensor 40 for detecting the medium temperature is further provided. Others are substantially the same, and thus redundant description is omitted.

  The temperature sensor 40 is a water temperature sensor or the like that detects the medium temperature of the medium 17. In order to use the medium temperature detected by the temperature sensor 40 as an alternative to the vehicle interior temperature, the medium temperature is preferably arranged at a location that reflects the vehicle interior temperature. As a location where the temperature sensor 40 is disposed, for example, as shown in FIG. 5, a first path 16 a between the ventilation heat recovery device 6 and the heat accumulator 20 reflecting the temperature in the passenger compartment can be cited. However, the number of temperature sensors 40 is not limited to one and may be plural.

  Next, the effect | action at the time of heating with the ventilation heat recovery system 1 which concerns on 2nd Embodiment, and the vehicle air conditioner 2 using the same is demonstrated.

  When the vehicle interior is warmed by heating, the water heated by the heat source 3 is circulated to the vehicle interior side. However, when the inside air circulation is performed, the window is clouded due to humidity generated by a person. For this reason, outside air is usually introduced. At this time, warm air is sent into the vehicle interior by heating the outside air introduced from the outside air introduction path 5 by the heater core 15.

  Further, the air in the vehicle compartment is led out from the inside air outlet passage 4 by ventilation, and is blown to the ventilation heat recovery unit 6 by the ventilation fan 19, so that heat exchange with the medium 17 inside the ventilation heat recovery unit 6 is performed. This is done to recover the warm heat in the passenger compartment.

  Then, the medium 17 is circulated by the water pump 18 so that the medium 17 flows from the ventilation heat recovery device 6 through the first path 16a. When the circulating medium 17 reaches the first control valve 23a, the first control valve 23a connects the path through which the medium 17 passes through the heat accumulator 20, and the inlet and outlet of the heat accumulator 20, and does not pass through the heat accumulator 20. Which of the first bypass paths 22a to be bypassed is controlled.

  As the control performed by the first control valve 23a, as shown in the first row of the table of FIG. If lower, the medium 17 performs control via the first bypass path 22a.

  Further, as the control performed by the first control valve 23a, as shown in the second row of the table of FIG. 3, the heat storage material temperature of the heat accumulator 20 is lower than the vehicle interior set temperature, and the medium temperature of the medium 17 is the vehicle interior. When the temperature is higher than the set temperature, the medium 17 performs control through the first bypass path 22a.

  Further, as the control performed by the first control valve 23a, as shown in the third row of the table of FIG. 3, the heat storage material temperature of the heat accumulator 20 is higher than the vehicle interior set temperature, and the medium temperature of the medium 17 is the vehicle interior. When the temperature is lower than the set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the first heat exchange unit 21 a in the regenerator 20, and the heat of the regenerator 20 is radiated to the medium 17.

  Further, the medium 17 is circulated by the water pump 18, so that the medium 17 reaches the recovered heat radiator 7. Then, heat is exchanged between the cold air of the outside air introduced into the outside air introduction path 5 and the medium 17 in the recovered heat radiator 7 to warm the outside air in the outside air introduction path 5.

  Thereafter, the air warmed by the ventilation heat recovery system 1 is further warmed by the heater core 15 and is blown into the passenger compartment to warm the passenger compartment.

  In addition, the medium 17 after being radiated by the recovered heat radiator 7 reaches the second control valve 23b through the second path 16b. When the medium 17 reaches the second control valve 23b, the second control valve 23b bypasses the path through which the medium 17 passes through the regenerator 20 and the inlet and outlet of the regenerator 20 without passing through the regenerator 20. Which of the second bypass paths 22b to be routed is controlled.

  As the control performed by the second control valve 23b, as shown in the first row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the vehicle interior set temperature, and the medium temperature of the medium 17 is If lower, the medium 17 performs control via the second bypass path 22b.

  Further, as the control performed by the second control valve 23b, as shown in the second row of the table of FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is lower than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is When the temperature is higher than the indoor set temperature, the medium 17 performs control through the heat accumulator 20. When the medium 17 passes through the regenerator 20, heat exchange is performed between the medium 17 and the second heat exchange unit 21 b in the regenerator 20, and the heat of the medium 17 is stored in the regenerator 20. The image of the heat energy recovered by heat storage corresponds to the shaded area shown in the graph of FIG.

  As the control performed by the second control valve 23b, as shown in the third row of the table in FIG. 3, the temperature of the heat storage material of the heat accumulator 20 is higher than the set temperature in the vehicle interior, and the vehicle interior temperature in the vehicle interior is the vehicle temperature. When the temperature is lower than the indoor set temperature, the medium 17 is controlled to pass through the second bypass path 22b.

  Thereafter, the medium 17 is further circulated by the water pump 18, so that the medium 17 returns to the ventilation heat recovery device 6.

  The ventilation heat recovery system 1 according to the second embodiment configured as described above and the vehicle air conditioner 2 using the same also use the ventilation heat recovery system 1 according to the first embodiment and the same. The same effect as the vehicle air conditioner 2 can be obtained.

(Other embodiments)
As described above, the present invention has been described according to the embodiment. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques should be apparent to those skilled in the art.

  For example, in the first and second embodiments, the case of heating has been described, but if a regenerator is used instead of the regenerator 20, it can be used for cooling.

  Thus, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters in the scope of claims reasonable from this disclosure.

DESCRIPTION OF SYMBOLS 1 ... Ventilation heat recovery system 2 ... Air conditioning apparatus for vehicles 3 ... Heat source 4 ... Inside air extraction path 5 ... Outside air introduction path 6 ... Ventilation heat recovery device 7 ... Recovery heat radiator 8 ... Heat transfer means 9 ... Refrigerant circulation system 10 ... Capacitor 11 ... Liquid tank 12 ... Compressor 13 ... Evaporator 14 ... Expansion valve 15 ... Heater core 16a ... First path 16b ... Second path 17 ... Medium 18 ... Water pump 19 ... Ventilation fan 20 ... Regenerator 21a ... First heat exchange Part 21b ... 2nd heat exchange part 22a ... 1st bypass path 22b ... 2nd bypass path 23a ... 1st control valve 23b ... 2nd control valve 40 ... Temperature sensor 100 ... Car

Claims (7)

An inside air outlet path that communicates with the outside of the passenger compartment, and leads the air in the passenger compartment to the outside of the passenger compartment from the passenger compartment,
An outside air introduction path for communicating outside and inside the vehicle interior and introducing outside air from outside the vehicle compartment to the vehicle interior;
A ventilation heat recovery unit that is provided in the inside air lead-out path and collects heat of the air led out from the inside air lead-out path;
A recovery heat radiator that is provided in the outside air introduction path and radiates heat to the air introduced from the outside air introduction path;
Heat transfer means for transferring heat between the ventilation heat recovery device and the recovered heat radiator;
A ventilation heat recovery system comprising: a heat accumulator that is provided in the heat transfer means and stores heat transferred by the heat transfer means, and is independent of a refrigerant circulation system of a vehicle air conditioner. The heat transfer means is
It is a path through which the medium for heat transfer flows from the ventilation heat recovery unit to the recovery heat radiator, and connects the path through the heat storage unit and the inlet and outlet of the heat storage unit through the heat storage unit. A first path having a first bypass path to bypass without
It is a path through which the medium for heat transfer flows from the recovered heat radiator toward the ventilation heat recovery apparatus, and passes through the heat accumulator and connects the inlet and outlet of the heat accumulator through the heat accumulator. A second path having a second bypass path that bypasses without
A first control valve that is provided in the first path and that controls whether or not to pass through the first bypass path;
The ventilation heat recovery system according to claim 1, further comprising: a second control valve that is provided in the second path and controls whether or not the second path is routed.   The ventilation heat recovery system according to claim 2, wherein the heat accumulator performs heat exchange with the medium flowing in each of the first path and the second path.   The ventilation heat recovery system according to claim 2, wherein the first control valve and the second control valve are controlled based on a vehicle interior temperature in the vehicle interior and a heat storage material temperature of the heat accumulator.   The ventilation heat recovery system according to claim 2, wherein the first control valve and the second control valve are controlled based on a medium temperature of the medium and a heat storage material temperature of the heat accumulator.   The ventilation heat recovery system according to any one of claims 2 to 5, wherein the heat transfer means includes a temperature sensor that detects a medium temperature of the medium.   It has the ventilation heat recovery system of any one of Claims 1-6, The air conditioning apparatus for vehicles characterized by the above-mentioned.

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