Integrated heat exchange system

Abstract

An integrated heat exchange system for a vehicle includes: a first heat exchange device including a first evaporator and a first heat exchanger; the second heat exchange device comprises a second evaporator and a second heat exchanger; a first shut-off valve connected to the first evaporator; the second stop valve is connected to the second evaporator; a water heat exchanger connected to the first heat exchanger and the second heat exchanger; a water pump connected to the water heat exchanger; a radiator connected to the water pump; the integrated heat exchange system is characterized in that the integrated heat exchange system comprises a compressor connected to the first evaporator through a first stop valve and connected to the second evaporator through a second stop valve; wherein the first evaporator and the second evaporator are connected to the compressor; the first heat exchanger and the second heat exchanger are connected to a water pump; the water heat exchanger is connected to the radiator.

Description

Technical Field

[0001] The present invention relates to a heat exchange system for a vehicle passenger compartment or cargo compartment, and in particular to an integrated heat exchange system that uses an automotive-grade compressor to provide refrigeration and / or heating functions for a first heat exchange device and / or a second heat exchange device of a vehicle respectively. Background Art

[0002] In the prior art, in-vehicle refrigerators generally use non-automotive-grade compressors similar to traditional household refrigerators. This results in problems such as noise, vibration, and electromagnetic compatibility (EMC) in in-vehicle refrigerators. In addition, the refrigeration capacity of existing in-vehicle refrigerators is limited, the cost is relatively high, the layout is relatively difficult, and they cannot provide heating. Moreover, the air conditioning system of existing vehicles, especially the rear row air conditioning system, has relatively poor performance due to the long layout of its air ducts and pipelines. Summary of the Invention

[0003] The object of the present invention is to provide an integrated device for a first heat exchange device and a second heat exchange device of a vehicle. By using an automotive-grade compressor and a precise control unit (ECU), independent control of the first heat exchange device and the second heat exchange device is achieved, effectively solving the problems existing in the prior art, improving the refrigeration and heating efficiency, reducing the cost, and improving the space utilization rate and user experience.

[0004] The present invention discloses an integrated heat exchange system for a vehicle, which includes: a first heat exchange device, which includes a first evaporator and a first heat exchanger; a second heat exchange device, which includes a second evaporator and a second heat exchanger; a first shut-off valve, which is connected to the first evaporator; a second shut-off valve, which is connected to the second evaporator; a first three-way valve; a second three-way valve; a water heat exchanger, which is connected to the first heat exchanger and the second heat exchanger via the first three-way valve; a water pump, which is connected to the water heat exchanger; and a radiator, which is connected to the water pump; and is characterized in that the integrated heat exchange system includes: a compressor, which is connected to the first evaporator via the first shut-off valve and is connected to the second evaporator via the second shut-off valve; wherein, the first evaporator and the second evaporator are connected to the compressor; the first heat exchanger and the second heat exchanger are connected to the water pump via the second three-way valve; and the water heat exchanger is connected to the radiator via the first three-way valve.

[0005] According to an optional embodiment, the first three-way valve includes a first port, a second port, and a third port; the water heat exchanger is connected to the first port of the first three-way valve; the second port of the first three-way valve is connected to the first heat exchanger and the second heat exchanger; and the third port of the first three-way valve is connected to the radiator.

[0006] According to an alternative embodiment, the second three-way valve includes a first port, a second port, and a third port; the first port of the second three-way valve is connected to the water pump; the second heat exchanger is connected to the second port of the second three-way valve; and the first heat exchanger is connected to the third port of the second three-way valve.

[0007] According to an alternative embodiment, the first evaporator includes a bypass duct; and the second heat exchange device includes a temperature control damper for controlling the air outlet ratio of the hot air generated by the second evaporator.

[0008] According to an alternative embodiment, the integrated heat exchange system includes a temperature and pressure sensor disposed downstream of the compressor; a first shut-off valve, a second shut-off valve, a first evaporator, a second evaporator, a compressor, a temperature and pressure sensor, and a water heat exchanger form a first loop; in the first loop, the first evaporator and the second evaporator are in parallel; the heat exchange medium circulates in the first loop; the temperature and pressure sensor is configured to measure the pressure and temperature of the heat exchange medium downstream of the compressor; a first three-way valve, a second three-way valve, a water pump, a water heat exchanger, a first heat exchanger, and a second heat exchanger form a second loop; in the second loop, the first heat exchanger and the second heat exchanger are in parallel; a first three-way valve, a water pump, a radiator, and a water heat exchanger form a third loop; and the coolant circulates in the second loop and the third loop.

[0009] According to an alternative embodiment, the first loop is not directly connected to the second loop and the third loop, but exchanges heat via the water heat exchanger.

[0010] According to an alternative embodiment, the integrated heat exchange system includes a control unit electrically connected to the first shut-off valve, the second shut-off valve, the first three-way valve, the second three-way valve, the water pump, the compressor, and the temperature and pressure sensor; and the control unit is configured to control the opening and closing of the first shut-off valve, the second shut-off valve, the first three-way valve, and the second three-way valve, control the start and stop of the water pump and the compressor, and control the speed of the compressor according to the pressure and temperature of the heat exchange medium downstream of the compressor.

[0011] According to an optional embodiment, the integrated heat exchange system includes a first refrigeration mode, a second refrigeration mode, a third refrigeration mode, a first heating mode, a second heating mode, a third heating mode, a first hybrid mode, a second hybrid mode, and an idle mode; and a control unit configured to: in the first refrigeration mode, open the first shut-off valve, close the second shut-off valve, open the first and third ports of the first three-way valve, close the second port of the first three-way valve, close the first, second, and third ports of the second three-way valve, start the water pump and the compressor, so that the heat exchange medium flows through the first evaporator to cool the first heat exchanger, and after cooling the second heat exchanger, dissipate heat by means of the water heat exchanger and the radiator; in the second refrigeration mode, open the second shut-off valve, close the first shut-off valve, open the first and third ports of the first three-way valve, close the second port of the first three-way valve, close the first, second, and third ports of the second three-way valve, start the water pump and the compressor, so that the heat exchange medium flows through the second evaporator to cool the second heat exchanger, and after cooling the second heat exchanger, dissipate heat by means of the water heat exchanger and the radiator; in the third refrigeration mode, open the first and second shut-off valves, open the first and third ports of the first three-way valve, close the second port of the first three-way valve, close the first, second, and third ports of the second three-way valve, start the water pump and the compressor, so that the heat exchange medium flows through the first evaporator and the second evaporator respectively to cool the first heat exchanger and the second heat exchanger respectively, and after cooling the first heat exchanger and the second heat exchanger, dissipate heat by means of the water heat exchanger and the radiator; in the first heating mode, open the first shut-off valve, close the second shut-off valve, open the first and second ports of the first three-way valve, close the third port of the first three-way valve, open the first and third ports of the second three-way valve, close the second port of the second three-way valve, start the water pump and the compressor, so that the heat exchange medium heats the coolant by means of the water heat exchanger, and the heated coolant flows through the first heat exchanger to heat the first heat exchanger; in the second heating mode, open the second shut-off valve, close the first shut-off valve, open the first and second ports of the first three-way valve, close the third port of the first three-way valve, open the first and second ports of the second three-way valve, close the third port of the second three-way valve, start the water pump and the compressor, so that the heat exchange medium heats the coolant by means of the water heat exchanger, and the heated coolant flows through the second heat exchanger to heat the second heat exchanger;In the third heating mode, the first cut-off valve and the second cut-off valve are opened, the first port and the second port of the first three-way valve are opened, the third port of the first three-way valve is closed, the first port, the second port and the third port of the second three-way valve are opened, the water pump and the compressor are started, so that the heat exchange medium heats the coolant by means of the water heat exchanger, and the heated coolant flows through the first heat exchanger and the second heat exchanger respectively to heat the first heat exchanger and the second heat exchanger; in the first mixing mode, the first cut-off valve and the second cut-off valve are opened, the first port, the second port and the third port of the first three-way valve are opened, the first port and the second port of the second three-way valve are opened, the third port of the second three-way valve is closed, the water pump and the compressor are started, so that the heat exchange medium flows through the first evaporator to cool the first heat exchanger, and at the same time flows through the second evaporator, and after cooling the first heat exchanger, it dissipates heat by means of the water heat exchanger and the radiator, and at the same time makes the coolant heat up by means of the heat exchange medium through the water heat exchanger, and the heated coolant flows through the second heat exchanger to heat the second heat exchanger; in the second mixing mode, the first cut-off valve and the second cut-off valve are opened, the first port, the second port and the third port of the first three-way valve are opened, the first port and the third port of the second three-way valve are opened, the second port of the second three-way valve is closed, the water pump and the compressor are started, so that the heat exchange medium flows through the second evaporator to cool the second heat exchanger, and at the same time flows through the bypass pipeline of the first evaporator, and after cooling the second heat exchanger, it dissipates heat by means of the water heat exchanger, the radiator and the heat exchange medium from the bypass pipeline of the first evaporator; at the same time, the coolant heats up by means of the heat exchange medium through the water heat exchanger, and the heated coolant flows through the first heat exchanger to heat the first heat exchanger; and in the idle mode, the first cut-off valve and the second cut-off valve are closed, and the compressor and the water pump are shut down.

[0012] According to an optional embodiment, the first heat exchange device includes a thermostatic box arranged at the rear row of the vehicle; the second heat exchange device includes the rear row air conditioner of the vehicle; and the compressor includes an in-vehicle compressor.

[0013] The present invention also discloses a method for controlling an integrated heat exchange system of a vehicle, the method comprising the following steps: S101: determining whether the integrated heat exchange system is in an idle mode; S102: in the case where the integrated heat exchange system is not in the idle mode, determining whether the input from the user is to cause the integrated heat exchange system to enter the idle mode; S103: in the case where the input from the user is to cause the integrated heat exchange system to enter the idle mode, controlling the integrated heat exchange system to enter the idle mode after a first time period has elapsed since the last start of the compressor 8 and the water pump 7, or after receiving a vehicle trip end signal (such as a parking signal) (whichever comes first); and S104: in the case where the integrated heat exchange system is in the idle mode, or in the case where the integrated heat exchange system is not in the idle mode and the input from the user is not to cause the integrated heat exchange system to enter the idle mode, controlling the integrated heat exchange system to switch between a first cooling mode, a second cooling mode, a third cooling mode, a first heating mode, a second heating mode, a third heating mode, a first hybrid mode and a second hybrid mode according to the input from the user.

[0014] The integrated heat exchange system according to the present invention includes a first heat exchange device (such as a thermostatic chamber having refrigeration and heating functions) and a second heat exchange device (such as a rear row air conditioner), and both share the same vehicle-grade compressor. By controlling the first cut-off valve and the second cut-off valve, independent operation and combined operation of the first heat exchange device and the second heat exchange device can be achieved, meeting different refrigeration and heating requirements, and effectively solving problems existing in in-vehicle refrigerators, such as high material costs, difficult space layout, vibration noise, electromagnetic interference EMC, low utilization rate, and inability to heat.

[0015] In addition, the integrated heat exchange system according to the present invention can implement an independent air conditioning control system (heating, cooling, seat ventilation, etc.) for the third row or the second row of the vehicle, improving the performance of the vehicle's entire air conditioning.

[0016] In addition, the integrated heat exchange system according to the present invention eliminates the long heat exchange medium pipeline from the front row to the rear row of the vehicle. This increases a great deal of flexibility in the design of the air conditioning ventilation pipeline. The compressor of the integrated heat exchange system according to the present invention can be arranged in the trunk of the vehicle, so that the ventilation pipeline design from the trunk to the C-pillar and the D-pillar can be realized, increasing the space utilization rate inside the vehicle cabin to a certain extent.

[0017] In addition, the integrated heat exchange system according to the present invention integrates the control units of the in-vehicle thermostatic chamber and the air conditioning system, making it more intelligent and providing a better user experience for customers in the use of the air conditioning function and the thermostatic chamber function. Description of the Drawings

[0018] The foregoing and other aspects of the present invention will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that the scales of the respective drawings may be different for the purpose of clear illustration, but this will not affect the understanding of the present invention.

[0019] Figure 1 is a schematic diagram of an integrated heat exchange system for a vehicle according to the present invention.

[0020] Figure 2 is a block diagram of a method for controlling an integrated heat exchange system according to the present invention. Detailed Embodiments

[0021] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0022] It should be noted that the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be a communication inside two elements.

[0023] Figure 1 is a schematic diagram of an integrated heat exchange system for a vehicle according to the present invention. The integrated heat exchange system includes: a first heat exchange device 1, a second heat exchange device 2, a first stop valve 3, a second stop valve 4, a first three-way valve 5, a second three-way valve 6, a water pump 7, a compressor 8, a radiator 9, a water heat exchanger 10, a temperature and pressure sensor 15, and a control unit 16. As Figure 1As shown, the first heat exchange device 1 includes a first evaporator 11 and a first heat exchanger 12. The second heat exchange device 2 includes a second evaporator 13 and a second heat exchanger 14. The first shut-off valve 3 is connected to the first evaporator 11. The second shut-off valve 4 is connected to the second evaporator 13. The water heat exchanger 10 is connected to the first heat exchanger 12 and the second heat exchanger 14 via a first three-way valve 5. The water pump 7 is connected to the water heat exchanger 10. The radiator 9 is connected to the water pump 7. The compressor 8 is connected to the first evaporator 11 via the first shut-off valve 3 and is connected to the second evaporator 13 via the second shut-off valve 4. The temperature and pressure sensor 15 is disposed downstream of the compressor 8 for measuring the temperature and pressure of the heat exchange medium downstream of the compressor 8. The control unit 16 is electrically connected to the first shut-off valve 3, the second shut-off valve 4, the first three-way valve 5, the second three-way valve 6, the water pump 7, the compressor 8, and the temperature and pressure sensor 15, and is configured to control the rotational speed of the compressor 8 according to the temperature and pressure of the heat exchange medium downstream of the compressor 8.

[0024] It should be noted that the first evaporator 11 includes a bypass pipe. The second heat exchange device 2 includes a temperature control damper for controlling the air outlet ratio of the hot air generated by the second evaporator 13. When flowing through the first evaporator 11, the heat exchange medium can selectively pass through the corresponding bypass pipe without participating in evaporation heat absorption. The temperature control damper controls the air outlet ratio of the hot air generated by the second evaporator 13, thereby controlling the air outlet temperature.

[0025] The first evaporator 11 and the first heat exchanger 12 are respectively used for refrigeration and heating of the first heat exchange device 1. Similarly, the second evaporator 13 and the second evaporator 13 are respectively used for refrigeration and heating of the second heat exchange device 2. The first evaporator 11 and the second evaporator 13 are connected to the compressor 8. The first heat exchanger 12 and the second heat exchanger 14 are connected to the water pump 7 via a second three-way valve 6. The water heat exchanger 10 is connected to the radiator 9 via the first three-way valve 5.

[0026] In this embodiment, the first heat exchange device 1 is a thermostat box disposed at the rear row of the vehicle, the second heat exchange device 2 is the rear row air conditioner of the vehicle, and the compressor 8 is a vehicle-mounted compressor. In other embodiments, the first heat exchange device 1 may also be a thermostat box disposed in the front row or the trunk of the vehicle, and the second heat exchange device 2 may also be the front row air conditioner of the vehicle.

[0027] As Figure 1As shown, the first three-way valve 5 includes a first port a1, a second port a2, and a third port a3. The water heat exchanger 10 is connected to the first port a1 of the first three-way valve 5. The second port a2 of the first three-way valve 5 is connected to the first heat exchanger 12 and the second heat exchanger 14. The third port a3 of the first three-way valve 5 is connected to the radiator 9. In this way, the first shut-off valve 3, the second shut-off valve 4, the first evaporator 11, the second evaporator 13, and the compressor 8 form a first loop. In the first loop, the first evaporator 11 and the second evaporator 13 are in parallel. The heat exchange medium circulates in the first loop. That is, after being compressed by the compressor 8, the heat exchange medium can flow through the first shut-off valve 3 and the first evaporator 11 to cool the first heat exchange device 1, and then return to the compressor 8. It can also flow through the second shut-off valve 4 and the second evaporator 13 to cool the second heat exchange device 2, and then return to the compressor 8. Since the first evaporator 11 and the second evaporator 13 are in parallel, the above process can also be carried out simultaneously.

[0028] As Figure 1 shown, the second three-way valve 6 includes a first port b1, a second port b2, and a third port b3. The first port b1 of the second three-way valve 6 is connected to the water pump 7. The second heat exchanger 14 is connected to the second port b2 of the second three-way valve 6. The first heat exchanger 12 is connected to the third port b3 of the second three-way valve 6. In this way, the first three-way valve 5, the second three-way valve 6, the water pump 7, the water heat exchanger 10, the first heat exchanger 12, and the second heat exchanger 14 form a second loop. In the second loop, the first heat exchanger 12 and the second heat exchanger 14 are in parallel. The coolant circulates in the second loop. That is, the coolant is pumped by the water pump 7 and can flow through the water heat exchanger 10, the first three-way valve 5, and the first heat exchanger 12 to heat the first heat exchange device 1, then flow through the second three-way valve 6 and return to the water pump 7. It can also flow through the water heat exchanger 10, the first three-way valve 5, and the second heat exchanger 14 to heat the second heat exchange device 2, then flow through the second three-way valve 6 and return to the water pump 7. Since the first heat exchanger 12 and the second heat exchanger 14 are in parallel, the above process can also be carried out simultaneously. The first loop and the second loop exchange heat through the water heat exchanger 10. That is, the coolant exchanges heat with the heat exchange medium in the first loop at the water heat exchanger 10 to be heated by the heat exchange medium.

[0029] As Figure 1 shown, the first three-way valve 5, the water pump 7, the radiator 9, and the water heat exchanger 10 form a third loop. The coolant circulates in the third loop. That is, the coolant is pumped by the water pump 7, flows through the water heat exchanger 10, the first three-way valve 5, and the radiator 9, dissipates heat at the radiator 9, and then returns to the water pump 7. The first loop and the third loop exchange heat through the water heat exchanger 10. That is, the coolant exchanges heat with the heat exchange medium in the first loop at the water heat exchanger 10 to cool the heat exchange medium.

[0030] The integrated heat exchange system includes a first refrigeration mode, a second refrigeration mode, a third refrigeration mode, a first heating mode, a second heating mode, a third heating mode, a first hybrid mode, a second hybrid mode, and an idle mode. These modes are set depending on the positions of the switches of the first heat exchanger 1 and the second heat exchanger 2.

[0031] When the switch of the first heat exchanger 1 is placed in the refrigeration position and the switch of the second heat exchanger 2 is placed in the closed position, the integrated heat exchange system enters the first refrigeration mode. In the first refrigeration mode, the first shut-off valve 3 is opened, the second shut-off valve 4 is closed, the first port a1 and the third port a3 of the first three-way valve 5 are opened, the second port a2 of the first three-way valve 5 is closed, the first port b1, the second port b2, and the third port b3 of the second three-way valve 6 are closed, and the water pump 7 and the compressor 8 operate so that the heat exchange medium flows through the first evaporator 11 to refrigerate the first heat exchanger 1, and after refrigeration, heat dissipation is carried out by means of the water heat exchanger 10 and the radiator 9.

[0032] When the switch of the first heat exchanger 1 is placed in the closed position and the switch of the second heat exchanger 2 is placed in the refrigeration position, the integrated heat exchange system enters the second refrigeration mode. In the second refrigeration mode, the second shut-off valve 4 is opened, the first shut-off valve 3 is closed, the first port a1 and the third port a3 of the first three-way valve 5 are opened, the second port a2 of the first three-way valve 5 is closed, the first port b1, the second port b2, and the third port b3 of the second three-way valve 6 are closed, and the water pump 7 and the compressor 8 operate so that the heat exchange medium flows through the second evaporator 13 to refrigerate the second heat exchanger 2, and after refrigeration, heat dissipation is carried out by means of the water heat exchanger 10 and the radiator 9.

[0033] When the switches of both the first heat exchanger 1 and the second heat exchanger 2 are placed in the refrigeration position, the integrated heat exchange system enters the third refrigeration mode. In the third refrigeration mode, the first shut-off valve 3 and the second shut-off valve 4 are opened, the first port a1 and the third port a3 of the first three-way valve 5 are opened, the second port a2 of the first three-way valve 5 is closed, the first port b1, the second port b2, and the third port b3 of the second three-way valve 6 are closed, and the water pump 7 and the compressor 8 operate so that the heat exchange medium flows through the first evaporator 11 and the second evaporator 13 respectively to refrigerate the first heat exchanger 1 and the second heat exchanger 2 respectively, and after refrigeration, heat dissipation is carried out by means of the water heat exchanger 10 and the radiator 9.

[0034] When the switch of the first heat exchanger 1 is set to the heating position and the switch of the second heat exchanger 2 is set to the closed position, the integrated heat exchange system enters the first heating mode. In the first heating mode, the first shut-off valve 3 is opened, the second shut-off valve 4 is closed, the first ports a1 and second ports a2 of the first three-way valve 5 are opened, the third port a3 of the first three-way valve 5 is closed, the first ports b1 and third ports b3 of the second three-way valve 6 are opened, the second port b2 of the second three-way valve 6 is closed, and the water pump 7 and the compressor 8 operate so that the heat exchange medium heats the coolant by means of the water heat exchanger 10, and the heated coolant flows through the first heat exchanger 12 to heat the first heat exchanger 1.

[0035] When the switch of the first heat exchanger 1 is set to the closed position and the switch of the second heat exchanger 2 is set to the heating position, the integrated heat exchange system enters the second heating mode. In the second heating mode, the second shut-off valve 4 is opened, the first shut-off valve 3 is closed, the first ports a1 and second ports a2 of the first three-way valve 5 are opened, the third port a3 of the first three-way valve 5 is closed, the first ports b1 and second ports b2 of the second three-way valve 6 are opened, the third port b3 of the second three-way valve 6 is closed, and the water pump 7 and the compressor 8 operate so that the heat exchange medium heats the coolant by means of the water heat exchanger 10, and the heated coolant flows through the second heat exchanger 14 to heat the second heat exchanger 2.

[0036] When the switches of both the first heat exchanger 1 and the second heat exchanger 2 are set to the heating position, the integrated heat exchange system enters the third heating mode. In the third heating mode, the first shut-off valve 3 and the second shut-off valve 4 are opened, the first ports a1 and second ports a2 of the first three-way valve 5 are opened, the third port a3 of the first three-way valve 5 is closed, the first ports b1, second ports b2 and third ports b3 of the second three-way valve 6 are opened, and the water pump 7 and the compressor 8 operate so that the heat exchange medium heats the coolant by means of the water heat exchanger 10, and the heated coolant flows through the first heat exchanger 12 and the second heat exchanger 14 respectively to heat the first heat exchanger 1 and the second heat exchanger 2 respectively.

[0037] When the switch of the first heat exchanger 1 is set to the cooling position and the switch of the second heat exchanger 2 is set to the heating position, the integrated heat exchange system enters the first mixing mode. In the first mixing mode, the first shut-off valve 3 and the second shut-off valve 4 are opened, the first port a1, the second port a2 and the third port a3 of the first three-way valve 5 are opened, the first port b1 and the second port b2 of the second three-way valve 6 are opened, the third port b3 of the second three-way valve 6 is closed, and the water pump 7 and the compressor 8 operate to make the heat exchange medium flow through the first evaporator 11 to cool the first heat exchanger 1, and after cooling, dissipate heat by means of the water heat exchanger 10 and the radiator 9. At the same time, make the coolant flow through the water heat exchanger 10 to be heated by means of the heat exchange medium, and the heated coolant flows through the second heat exchanger 14 to heat the second heat exchanger 2.

[0038] When the switch of the first heat exchanger 1 is set to the heating position and the switch of the second heat exchanger 2 is set to the cooling position, the integrated heat exchange system enters the second mixing mode. In the second mixing mode, the first shut-off valve 3 and the second shut-off valve 4 are opened, the first port a1, the second port a2 and the third port a3 of the first three-way valve 5 are opened, the first port b1 and the third port b3 of the second three-way valve 6 are opened, the second port b2 of the second three-way valve 6 is closed, and the water pump 7 and the compressor 8 operate to make the heat exchange medium flow through the second evaporator 13 to cool the second heat exchanger 2, and after cooling, dissipate heat by means of the water heat exchanger 10 and the radiator 9; at the same time, make the coolant flow through the water heat exchanger 10 to be heated by means of the heat exchange medium, and the heated coolant flows through the first heat exchanger 12 to heat the first heat exchanger 1.

[0039] When the switches of both the first heat exchanger 1 and the second heat exchanger 2 are set to the closed position, the integrated heat exchange system enters the idle mode. In the idle mode, the first shut-off valve 3 and the second shut-off valve 4 are closed, and the compressor 8 and the water pump 7 stop operating.

[0040] Figure 2 is a block diagram of a method for controlling an integrated heat exchange system according to the present invention. This method is executed by the control unit 16 according to an input from a user. This method specifically includes the following steps:

[0041] S101: Determine whether the integrated heat exchange system is in the idle mode;

[0042] S102: When the integrated heat exchange system is not in the idle mode, determine whether the input from the user is to make the integrated heat exchange system enter the idle mode;

[0043] S103: When the input from the user causes the integrated heat exchange system to enter the idle mode, after a first time period has elapsed since the last start of the compressor 8 and the water pump 7, or after receiving a signal indicating the end of the vehicle's journey (such as a parking signal) (whichever comes first), control the integrated heat exchange system to enter the idle mode;

[0044] S104: When the integrated heat exchange system is in the idle mode, or when the integrated heat exchange system is not in the idle mode and the input from the user does not cause the integrated heat exchange system to enter the idle mode, control the integrated heat exchange system to switch between the first refrigeration mode, the second refrigeration mode, the third refrigeration mode, the first heating mode, the second heating mode, the third heating mode, the first hybrid mode, and the second hybrid mode according to the input from the user.

[0045] The purpose of introducing delayed shutdown in the above step S103 is to prevent the frequent on / off of the compressor 8 and the water pump 7 caused by the intentional or unintentional (such as misoperation) frequent change of the switching states of the first heat exchange device 1 and the second heat exchange device 2, which may cause damage to them.

[0046] The foregoing description of the embodiments has been provided for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the embodiments to the variants described. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to best illustrate the principles and practical applications, enabling those skilled in the art to understand the embodiments from their various embodiments and the various modifications suitable for their intended uses. Within the framework of the embodiments, the above components and features can be combined between different embodiments.

Claims

1. An integrated heat exchange system for a vehicle, comprising: A first heat exchange device (1), which includes a first evaporator (11) and a first heat exchanger (12); A second heat exchange device (2), which includes a second evaporator (13) and a second heat exchanger (14); A first shut-off valve (3), which is connected to the first evaporator (11); A second shut-off valve (4), which is connected to the second evaporator (13); A first three-way valve (5); A second three-way valve (6); A water heat exchanger (10), which is connected to the first heat exchanger (12) and the second heat exchanger (14) via the first three-way valve (5); A water pump (7), which is connected to the water heat exchanger (10); And A radiator (9), which is connected to the water pump (7); Characterized in that the integrated heat exchange system includes: A compressor (8), which is connected to the first evaporator (11) via the first shut-off valve (3), and is connected to the second evaporator (13) via the second shut-off valve (4); Wherein, The first evaporator (11) and the second evaporator (13) are connected to the compressor (8); The first heat exchanger (12) and the second heat exchanger (14) are connected to the water pump (7) via the second three-way valve (6); and The water heat exchanger (10) is connected to the radiator (9) via the first three-way valve (5).

2. The integrated heat exchange system for a vehicle according to claim 1, wherein, The first three-way valve (5) includes a first port (a1), a second port (a2) and a third port (a3); The water heat exchanger (10) is connected to the first port (a1) of the first three-way valve (5); The second port (a2) of the first three-way valve (5) is connected to the first heat exchanger (12) and the second heat exchanger (14); and The third port (b3) of the first three-way valve (5) is connected to the radiator (9).

3. The integrated heat exchange system for a vehicle according to claim 2, wherein, The second three-way valve (6) includes a first port (b1), a second port (b2) and a third port (b3); The first port (b1) of the second three-way valve (6) is connected to the water pump (7); The second heat exchanger (14) is connected to the second port (b2) of the second three-way valve (6); and The first heat exchanger (12) is connected to the third port (b3) of the second three-way valve (6).

4. The integrated heat exchange system for a vehicle according to claim 1, wherein, The first evaporator (11) includes a bypass duct; and The second heat exchange device (2) includes a temperature control damper for controlling the air outlet ratio of the hot air generated by the second evaporator (13).

5. The integrated heat exchange system for a vehicle according to any one of claims 1-4, The integrated heat exchange system includes a temperature and pressure sensor (15) provided downstream of the compressor (8); The first shut-off valve (3), the second shut-off valve (4), the first evaporator (11), the second evaporator (13), the compressor (8), the temperature and pressure sensor (15) and the water heat exchanger (10) form a first loop; In the first loop, the first evaporator (11) and the second evaporator (13) are in parallel; The heat exchange medium circulates in the first loop; The temperature and pressure sensor (15) is configured to measure the pressure and temperature of the heat exchange medium downstream of the compressor (8); The first three-way valve (5), the second three-way valve (6), the water pump (7), the water heat exchanger (10), the first heat exchanger (12) and the second heat exchanger (14) form a second circuit; In the second circuit, the first heat exchanger (12) and the second heat exchanger (14) are in parallel; The first three-way valve (5), the water pump (7), the radiator (9) and the water heat exchanger (10) form a third circuit; and The coolant circulates in the second circuit and the third circuit.

6. The integrated heat exchange system for a vehicle according to claim 5, wherein, The first circuit is not directly connected to the second circuit and the third circuit, but exchanges heat via the water heat exchanger (10).

7. The integrated heat exchange system for a vehicle according to claim 5, wherein, The integrated heat exchange system includes a control unit (16) electrically connected to the first shut-off valve (3), the second shut-off valve (4), the first three-way valve (5), the second three-way valve (6), the water pump (7), the compressor (8) and the temperature and pressure sensor (15); And The control unit (16) is configured to control the opening and closing of the first shut-off valve (3), the second shut-off valve (4), the first three-way valve (5) and the second three-way valve (6), control the start and stop of the water pump (7) and the compressor (8), and control the rotational speed of the compressor (8) according to the pressure and temperature of the heat exchange medium downstream of the compressor (8).

8. The integrated heat exchange system for a vehicle according to claim 7, wherein, The integrated heat exchange system includes a first refrigeration mode, a second refrigeration mode, a third refrigeration mode, a first heating mode, a second heating mode, a third heating mode, a first hybrid mode, a second hybrid mode and an idle mode; The control unit (16) is configured to: In the first refrigeration mode, open the first shut-off valve (3), close the second shut-off valve (4), open the first port (a1) and the third port (a3) of the first three-way valve (5), close the second port (a2) of the first three-way valve (5), close the first port (b1), the second port (b2) and the third port (b3) of the second three-way valve (6), start the water pump (7) and the compressor (8), so that the heat exchange medium flows through the first evaporator (11) to cool the first heat exchanger (1), and dissipate heat by means of the water heat exchanger (10) and the radiator (9) after cooling the second heat exchanger (2); In the second refrigeration mode, the second shut-off valve (4) is opened, the first shut-off valve (3) is closed, the first port (a1) and the third port (a3) of the first three-way valve (5) are opened, the second port (a2) of the first three-way valve (5) is closed, the first port (b1), the second port (b2) and the third port (b3) of the second three-way valve (6) are closed, and the water pump (7) and the compressor (8) are started so that the heat exchange medium flows through the second evaporator (13) to refrigerate the second heat exchanger (2), and after refrigerating the second heat exchanger (2), heat dissipation is carried out by means of the water heat exchanger (10) and the radiator (9); In the third refrigeration mode, the first shut-off valve (3) and the second shut-off valve (4) are opened, the first port (a1) and the third port (a3) of the first three-way valve (5) are opened, the second port (a2) of the first three-way valve (5) is closed, the first port (b1), the second port (b2) and the third port (b3) of the second three-way valve (6) are closed, and the water pump (7) and the compressor (8) are started so that the heat exchange medium flows through the first evaporator (11) and the second evaporator (13) respectively to refrigerate the first heat exchanger (1) and the second heat exchanger (2) respectively, and after refrigerating the first heat exchanger (1) and the second heat exchanger (2), heat dissipation is carried out by means of the water heat exchanger (10) and the radiator (9); In the first heating mode, the first shut-off valve (3) is opened, the second shut-off valve (4) is closed, the first port (a1) and the second port (a2) of the first three-way valve (5) are opened, the third port (a3) of the first three-way valve (5) is closed, the first port (b1) and the third port (b3) of the second three-way valve (6) are opened, the second port (b2) of the second three-way valve (6) is closed, and the water pump (7) and the compressor (8) are started so that the heat exchange medium heats the coolant by means of the water heat exchanger (10), and the heated coolant flows through the first heat exchanger (12) to heat the first heat exchanger (1); In the second heating mode, the second shut-off valve (4) is opened, the first shut-off valve (3) is closed, the first port (a1) and the second port (a2) of the first three-way valve (5) are opened, the third port (a3) of the first three-way valve (5) is closed, the first port (b1) and the second port (b2) of the second three-way valve (6) are opened, the third port (b3) of the second three-way valve (6) is closed, and the water pump (7) and the compressor (8) are started so that the heat exchange medium heats the coolant by means of the water heat exchanger (10), and the heated coolant flows through the second heat exchanger (14) to heat the second heat exchanger (2); In the third heating mode, the first shut-off valve (3) and the second shut-off valve (4) are opened, the first ports (a1) and the second ports (a2) of the first three-way valve (5) are opened, the third port (a3) of the first three-way valve (5) is closed, the first ports (b1), the second ports (b2) and the third ports (b3) of the second three-way valve (6) are opened, and the water pump (7) and the compressor (8) are started, so that the heat exchange medium heats the coolant by means of the water heat exchanger (10), and the heated coolant flows through the first heat exchanger (12) and the second heat exchanger (14) respectively to heat the first heat exchanger (1) and the second heat exchanger (2); In the first mixing mode, the first shut-off valve (3) and the second shut-off valve (4) are opened, the first ports (a1), the second ports (a2) and the third ports (a3) of the first three-way valve (5) are opened, the first ports (b1) and the second ports (b2) of the second three-way valve (6) are opened, the third port (b3) of the second three-way valve (6) is closed, and the water pump (7) and the compressor (8) are started, so that the heat exchange medium flows through the first evaporator (11) to cool the first heat exchanger (1), and at the same time flows through the second evaporator (13), and dissipates heat by means of the water heat exchanger (10) and the radiator (9) after cooling the first heat exchanger (1), and at the same time enables the coolant to be heated by means of the heat exchange medium via the water heat exchanger (10), and the heated coolant flows through the second heat exchanger (14) to heat the second heat exchanger (2); In the second mixing mode, the first shut-off valve (3) and the second shut-off valve (4) are opened, the first ports (a1), the second ports (a2) and the third ports (a3) of the first three-way valve (5) are opened, the first port (b1) and the third port (b3) of the second three-way valve (6) are opened, the second port (b2) of the second three-way valve (6) is closed, and the water pump (7) and the compressor (8) are started, so that the heat exchange medium flows through the second evaporator (13) to cool the second heat exchanger (2), and at the same time flows through the bypass pipeline of the first evaporator (11), and dissipates heat by means of the water heat exchanger (10), the radiator (9) and the heat exchange medium from the bypass pipeline of the first evaporator (11) after cooling the second heat exchanger (2); at the same time enables the coolant to be heated by means of the heat exchange medium via the water heat exchanger (10), and the heated coolant flows through the first heat exchanger (12) to heat the first heat exchanger (1); and In the idle mode, the first shut-off valve (3) and the second shut-off valve (4) are closed, and the compressor (8) and the water pump (7) are shut down.

9. The integrated heat exchange system for a vehicle according to any one of claims 1-4, The first heat exchange device (1) includes a thermostatic chamber arranged at the rear row of the vehicle; The second heat exchange device (2) includes the rear row air conditioner of the vehicle; and The compressor (8) includes an in-vehicle compressor.

10. A method for controlling an integrated heat exchange system for a vehicle according to any one of claims 1-9, the method comprising the following steps: S101: Determine whether the integrated heat exchange system is in an idle mode; S102: In the case where the integrated heat exchange system is not in an idle mode, determine whether the input from the user is to cause the integrated heat exchange system to enter the idle mode; S103: In the case where the input from the user is to cause the integrated heat exchange system to enter the idle mode, after a first time period has elapsed since the last start of the compressor (8) and the water pump (7), or after receiving a vehicle trip end signal, control the integrated heat exchange system to enter the idle mode; And S104: In the case where the integrated heat exchange system is in an idle mode, or in the case where the integrated heat exchange system is not in an idle mode and the input from the user is not to cause the integrated heat exchange system to enter the idle mode, control the integrated heat exchange system to switch between a first refrigeration mode, a second refrigeration mode, a third refrigeration mode, a first heating mode, a second heating mode, a third heating mode, a first hybrid mode, and a second hybrid mode according to the input from the user.

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