阅读说明：本技术 冷媒换热装置及间接式热泵系统 (Refrigerant heat exchange device and indirect heat pump system ) 是由 吴铎 余兆开 刘旗 穆景阳 于 2021-10-12 设计创作，主要内容包括：本发明公开一种冷媒换热装置及间接式热泵系统,其中,冷媒换热装置包括装置本体、第一连通腔、第二连通腔和第一阀芯,装置本体内设有冷水单元和热水单元,冷水单元包括第一腔室和第二腔室,热水单元包括第三腔室和第四腔室,第一腔室和第三腔室上均设有第一进水口,第二腔室和第四腔室上均第一出水口,装置本体上设置有第二出水口和第二进水口,第一连通腔连通第一腔室和第三腔室,第二出水口与第一连通腔连通,第二连通腔连通第二腔室和第四腔室,第二进水口与第二连通腔连通,第一腔室、第二腔室、第三腔室和第四腔室内均设置有第一阀芯,第一阀芯能分别第一连通腔和第二连通腔通断。此装置能够简化冷媒管路,管路接线简单,占用空间小。(The invention discloses a refrigerant heat exchange device and an indirect heat pump system, wherein the refrigerant heat exchange device comprises a device body, a first communicating cavity, a second communicating cavity and a first valve core, a cold water unit and a hot water unit are arranged in the device body, the cold water unit comprises a first cavity and a second cavity, the hot water unit comprises a third cavity and a fourth cavity, a first water inlet is arranged on each of the first cavity and the third cavity, a first water outlet is arranged on each of the second cavity and the fourth cavity, a second water outlet and a second water inlet are arranged on the device body, the first communicating cavity is communicated with the first cavity and the third cavity, the second water outlet is communicated with the first communicating cavity, the second communicating cavity is communicated with the second cavity and the fourth cavity, the second water inlet is communicated with the second communicating cavity, and the first cavity, and the second chamber, the third chamber and the fourth chamber are internally provided with first valve cores, and the first valve cores can be respectively switched on and off by the first communicating cavity and the second communicating cavity. The device can simplify the refrigerant pipeline, and the pipeline has simple wiring and small occupied space.)

1. A refrigerant heat exchange device is characterized by comprising:

the device comprises a device body, wherein a cold water unit and a hot water unit are arranged in the device body, the cold water unit comprises a first cavity and a second cavity, the hot water unit comprises a third cavity and a fourth cavity, first water inlets are formed in the first cavity and the third cavity, first water outlets are formed in the second cavity and the fourth cavity, and the first water inlets and the first water outlets are connected with a heat exchanger; the device body is also provided with a second water outlet and a second water inlet which are used for connecting a load;

the first communicating cavity is communicated with the first chamber and the third chamber, and the second water outlet is communicated with the first communicating cavity;

the second communicating cavity is communicated with the second cavity and the fourth cavity, and the second water inlet is communicated with the second communicating cavity;

the first valve core is arranged in each of the first cavity, the second cavity, the third cavity and the fourth cavity and can respectively control the on-off of the first communicating cavity and the second communicating cavity.

2. The refrigerant heat exchange device according to claim 1, wherein a second valve core is disposed on the device body, and the second valve core can control the on-off of the first water inlet and the first water outlet.

3. The refrigerant heat exchange device according to claim 2, wherein an installation cavity is provided on the device body, a first through hole, a second through hole, a third through hole and a fourth through hole are provided in the installation cavity, the first through hole is communicated with the first chamber, the second through hole is communicated with the first chamber through the first communication cavity, the third through hole is communicated with the second chamber, the fourth through hole is communicated with the second chamber through the second communication cavity, the second valve spool is provided in the installation cavity, and the first through hole is communicated with the fourth through hole or the second through hole is communicated with the third through hole by rotating the second valve spool.

4. The refrigerant heat exchanging device according to claim 1, wherein a plurality of the first communicating chambers and a plurality of the second communicating chambers are provided.

5. The refrigerant heat exchange device according to claim 1, wherein the device body is provided with an opening along a first direction, the first chamber, the second chamber, the third chamber and the fourth chamber are all communicated with the opening, the opening is provided with a cover plate assembly, and the cover plate assembly is detachably connected with the device body to plug the opening.

6. The refrigerant heat exchange device according to claim 5, wherein the cover plate assembly includes a first cover plate and a second cover plate, the first cover plate has a plurality of fifth through holes corresponding to the first valve core, and the plurality of first valve cores pass through the fifth through holes and are connected to the first driving member.

7. The refrigerant heat exchange device according to claim 6, wherein a closed accommodating cavity is formed between the first cover plate and the second cover plate, the second cover plate is provided with a sixth through hole, the first driving member includes a gear assembly and a motor, the gear assembly is installed in the accommodating cavity, the motor is installed on one side of the second cover plate far away from the first cover plate, and the motor is in transmission connection with the gear assembly.

8. The refrigerant heat exchange device according to claim 7, wherein two first valve cores are disposed in each of the first chamber, the second chamber, the third chamber, and the fourth chamber along a length direction thereof, the two first valve cores in a same chamber are connected by a support member, two first driving members are disposed on the device body, the two first driving members are disposed on opposite sides of the device body, and one first driving member drives the four first valve cores on the same side to rotate.

9. The refrigerant heat exchange device according to claim 1, wherein the first communicating chamber is communicated with the first chamber and the third chamber through two seventh through holes, respectively, and the second communicating chamber is communicated with the second chamber and the fourth chamber through two seventh through holes, respectively;

the four cavities are internally provided with planar installation surfaces at the positions of the seventh through holes, the installation surfaces are detachably provided with installation plates, the installation plates are provided with tight planes abutted to the installation surfaces and matched cambered surfaces matched with the first valve cores, the tight planes are abutted to the installation surfaces, sealing rings are arranged between the installation surfaces, the installation plates correspond to the seventh through holes, and avoidance holes are formed in the seventh through holes and communicated with the tight planes and the matched cambered surfaces.

10. An indirect heat pump system comprising the refrigerant heat exchange device as recited in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of heat pump air conditioners, in particular to a refrigerant heat exchange device and an indirect heat pump system.

Background

The new energy automobile air conditioning system mainly utilizes electric power as energy consumption, but because the electric capacity of the new energy automobile is fixed, the waste heat of an engine cannot be utilized for effective heating, the energy consumption of the air conditioning system can influence the endurance capacity of new energy, and the air conditioning system technology of the new energy automobile is forced to approach energy conservation and high-efficiency energy utilization.

At present, most of heat pump air conditioners of automobiles adopt a direct heat pump system, the direct heat pump system utilizes an evaporator in an air conditioner box of a passenger compartment to cool the passenger compartment and a condenser in the air conditioner box to heat the passenger compartment, and a condenser plate type heat exchanger for cooling a battery pack is added, and refrigerant sides are connected into a multi-heat exchanger system. However, the direct heat pump system has several disadvantages:

1. the number of the heat exchangers is large, so that a plurality of refrigerant loops, complex refrigerant pipelines, long pipeline sizes and a plurality of electromagnetic stop valves and throttle valves of the refrigerant loops are caused;

2. the control valve and the components need to be connected with pipelines, so that the number of joints is too large, the pipeline connection is complex, and the leakage risk of the refrigerant is easily increased;

3. the occupied space of the connecting pipeline of the whole system is large, the heat pump system arrangement of the whole vehicle is not facilitated, and the production efficiency of the whole vehicle is influenced.

Disclosure of Invention

One object of an embodiment of the present invention is to: the refrigerant heat exchange device is simple in structure, capable of simplifying refrigerant pipelines, simple in pipeline wiring, capable of reducing the number of control valves and capable of reducing cost.

Another object of an embodiment of the present invention is to: the indirect heat pump system is simple in structure, small in occupied space of pipelines and convenient to arrange.

To achieve the purpose, the embodiment of the invention adopts the following technical scheme:

the first aspect provides a refrigerant heat exchange device, which comprises a device body, a first communicating cavity, a second communicating cavity and a first valve core, wherein a cold water unit and a hot water unit are arranged in the device body, the cold water unit comprises a first cavity and a second cavity, the hot water unit comprises a third cavity and a fourth cavity, first water inlets are respectively arranged on the first cavity and the third cavity, first water outlets are respectively arranged on the second cavity and the fourth cavity, the first water inlets and the first water outlets are connected with a heat exchanger, a second water outlet and a second water inlet used for connecting a load are also arranged on the device body, the first communicating cavity is communicated with the first cavity and the third cavity, the second water outlet is communicated with the first communicating cavity, the second communicating cavity is communicated with the second cavity and the fourth cavity, and the second water inlet is communicated with the second communicating cavity, the first valve core is arranged in each of the first cavity, the second cavity, the third cavity and the fourth cavity and can respectively control the on-off of the first communicating cavity and the second communicating cavity.

As a preferable scheme of the refrigerant heat exchange device, a second valve core is arranged on the device body, and the second valve core can control the on-off of the first water inlet and the first water outlet.

As a preferable scheme of the refrigerant heat exchange device, an installation cavity is arranged on the device body, a first through hole, a second through hole, a third through hole and a fourth through hole are arranged in the installation cavity, the first through hole is communicated with the first cavity, the second through hole is communicated with the first cavity through the communication cavity, the third through hole is communicated with the second cavity, the fourth through hole is communicated with the second cavity through the communication cavity, the second valve element is arranged in the installation cavity, and the first through hole is communicated with the fourth through hole or the second through hole is communicated with the fourth through hole by rotating the second valve element.

As a preferable scheme of the refrigerant heat exchange device, the first communicating cavity and the second communicating cavity are both provided with a plurality of communicating cavities.

As a preferable scheme of the refrigerant heat exchange device, a plurality of first through holes are formed in the cover plate at intervals corresponding to the first valve cores, a first driving member is arranged on one side of the cover plate away from the opening, and the plurality of first valve cores penetrate through the first through holes to be connected with the first driving member.

As a preferable scheme of the refrigerant heat exchange device, the device body is provided with an opening along a first direction, the first chamber, the second chamber, the third chamber and the fourth chamber are all communicated with the opening, the opening is provided with a cover plate assembly, and the cover plate assembly and the device body are detachably connected to block the opening.

As a preferable scheme of the refrigerant heat exchange device, the cover plate assembly includes a first cover plate and a second cover plate, the first cover plate is provided with a plurality of fifth through holes corresponding to the first valve core, and the plurality of first valve cores penetrate through the fifth through holes to be connected with the first driving member.

As a preferable scheme of the refrigerant heat exchange device, a closed accommodating cavity is formed between the first cover plate and the second cover plate, the second cover plate is provided with a sixth through hole, the first driving member comprises a gear assembly and a motor, the gear assembly is installed in the accommodating cavity, the motor is installed on one side, far away from the first cover plate, of the second cover plate, and the motor is connected with the gear assembly.

As a preferable scheme of the refrigerant heat exchange device, two first valve cores are arranged in the first chamber, the second chamber, the third chamber and the fourth chamber along the length direction of the first valve cores, the two first valve cores in the same chamber are connected through a support member, two first driving members are arranged on the device body, the two first driving members are respectively arranged on two opposite sides of the device body, and one first driving member drives the four first valve cores on the same side to rotate.

As a preferable scheme of the refrigerant heat exchange device, the first communicating cavity is respectively communicated with the first cavity and the third cavity through two first through holes, and the second communicating cavity is respectively communicated with the second cavity and the fourth cavity through two seventh through holes;

the four cavities are internally provided with planar installation surfaces at the positions of the seventh through holes, the installation surfaces are detachably provided with installation plates, the installation plates are provided with tight planes abutted to the installation surfaces and matched cambered surfaces matched with the first valve cores, the tight planes are abutted to the installation surfaces, sealing rings are arranged between the installation surfaces, the installation plates correspond to the seventh through holes, and avoidance holes are formed in the seventh through holes and communicated with the tight planes and the matched cambered surfaces.

In a second aspect, an indirect heat pump system is provided, which includes the refrigerant heat exchanging device as described above.

The embodiment of the invention has the beneficial effects that: the first communicating cavity is arranged to be communicated with the first cavity and the third cavity, the second water outlet is communicated with the first communicating cavity, the second communicating cavity is communicated with the second cavity and the fourth cavity, the second water inlet is communicated with the second communicating cavity, the first valve core can control only low-temperature refrigerants or high-temperature refrigerants to flow out of the second water outlet or two refrigerants to flow out simultaneously by controlling the on-off of the first communicating cavity and the second communicating cavity respectively, the low-temperature refrigerants or the high-temperature refrigerants flow out of the second water outlet after neutralization and then flow out of the second water inlet, the cold water unit and the hot water unit are integrated together, three modes of heat exchange can be realized, refrigerant pipelines are simplified, pipeline wiring is simple, and the use of a pipeline control valve is reduced; when two kinds of refrigerants flow out simultaneously, the first valve core rotates and can also control the flow of different refrigerants, so that the temperature of the refrigerant flowing through the load is adjusted, the heat exchange requirements of different loads are met, the performance of the load is improved, and the power consumption is reduced.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic structural diagram of a refrigerant heat exchange device according to an embodiment of the present invention.

Fig. 2 is an exploded view of the refrigerant heat exchanging device according to the embodiment of the present invention.

Fig. 3 is a first partial cross-sectional view of a refrigerant heat exchanger according to an embodiment of the present invention.

Fig. 4 is a second partial cross-sectional view of the refrigerant heat exchanging device according to the embodiment of the present invention.

Fig. 5 is a third partial sectional view of the refrigerant heat exchanging device according to the embodiment of the present invention.

Fig. 6 is a fourth partial cross-sectional view of the refrigerant heat exchanging device according to the embodiment of the present invention.

Fig. 7 is a first perspective structural diagram of the device body according to the embodiment of the invention.

Fig. 8 is a second perspective structural diagram of the device body according to the embodiment of the invention.

Fig. 9 is a third perspective structural diagram of the device body according to the embodiment of the invention.

Fig. 10 is a schematic structural view of the sealing member and the mounting plate after assembly according to the embodiment of the invention.

Fig. 11 is a working schematic diagram of the refrigerant heat exchanging device according to the embodiment of the present invention.

In the figure:

1. a device body; 101. a first chamber; 102. a second chamber; 103. a third chamber; 104. a fourth chamber; 105. a first water inlet; 106. a first water outlet; 107. a second water outlet; 108. a second water inlet; 109. a first communicating chamber; 110. a second communicating chamber; 111. a mounting cavity; 112. a first through hole; 113. a second through hole; 114. a third through hole; 115. a fourth via hole; 116. a seventh via hole; 117. a first heat exchanger; 118. a second heat exchanger; 119. a load; 2. a first valve spool; 21. a flow channel; 3. a second valve core; 4. a cover plate assembly; 41. a first cover plate; 411. a fifth through hole; 42. a second cover plate; 421. a sixth through hole; 5. a first driving member; 51. a gear assembly; 52. a motor; 6. a support member; 7. mounting a plate; 71. abutting against the plane; 72. matching with the cambered surface; 73. avoiding holes; 8. a seal ring; 9. a second driving member.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 10, a refrigerant heat exchange device according to an embodiment of the present invention includes a device body 1, a first communicating chamber 109, a second communicating chamber 110, and a first valve core 2, a cold water unit and a hot water unit are disposed in the device body 1, the cold water unit includes a first chamber 101 and a second chamber 102, the hot water unit includes a third chamber 103 and a fourth chamber 104, a first water inlet 105 is disposed on each of the first chamber 101 and the third chamber 103, a first water outlet 106 is disposed on each of the second chamber 102 and the fourth chamber 104, the first water inlet 105 and the first water outlet 106 are connected to a heat exchanger, a second water outlet 107 and a second water inlet 108 for connecting a load 119 are further disposed on the device body 1, the first communicating chamber 109 communicates the first chamber 101 and the third chamber 103, the second water outlet 107 communicates with the first communicating chamber 109, the second communicating chamber 110 communicates with the second chamber 102 and the fourth chamber 104, the second water inlet 108 communicates with the second communicating chamber 110, first valve cores 2 are arranged in the first chamber 101, the second chamber 102, the third chamber 103 and the fourth chamber 104, and the first valve cores 2 can respectively control the connection and disconnection of the first communicating cavity 109 and the second communicating cavity 110. The first communicating cavity 109 is arranged to be communicated with the first cavity 101 and the third cavity 103, the second water outlet 107 is communicated with the first communicating cavity 109, the second communicating cavity 110 is communicated with the second cavity 102 and the fourth cavity 104, the second water inlet 108 is communicated with the second communicating cavity 110, the first valve core 2 can control only low-temperature refrigerants or high-temperature refrigerants to flow out of the second water outlet 107 or two refrigerants to flow out simultaneously by controlling the connection and disconnection of the first communicating cavity 109 and the second communicating cavity 110 respectively, the two refrigerants flow out of the second water inlet 108 after being mixed, and the cold water unit and the hot water unit are integrated together, so that heat exchange in three modes can be realized, refrigerant pipelines are simplified, pipeline wiring is simple, the condition of wrong connection is reduced, meanwhile, the use of a control valve of the refrigerant pipelines is reduced, the cost is reduced, and the occupied space of a heat pump system can be reduced; when two kinds of refrigerants flow out simultaneously, the first valve core 2 rotates and can control the flow of different refrigerants, so that the temperature of the refrigerant flowing through the load 119 is adjusted, the heat exchange requirements of different loads 119 are met, the performance of the load 119 is improved, and the power consumption is reduced.

Specifically, the first valve element 2 is provided with a plurality of different flow channels 21, and the first valve element 2 is selectively rotated to drive the different flow channels 21 to communicate the first water inlet 105 with one second water outlet 107 and communicate the first water outlet 106 with the second water inlet 108.

Different first valve cores 2 are rotated to enable different flow channels 21 to be communicated with different second water outlets 107 or different second water inlets 108, and the refrigerant can only exchange heat for the load 119 through the communicated second water inlets 108 and second water outlets 107, so that the heat exchange is controlled to be carried out only for the load 119 needing heat exchange.

In this embodiment, the second valve core 3 is disposed on the device body 1, and the second valve core 3 can control the on-off of the first water inlet 105 and the first water outlet 106. The second valve core 3 is rotated to enable the refrigerant to directly flow from the first water inlet 105 of the cold water unit to the second water outlet 107 of the cold water unit through the heat exchanger or flow from the first water inlet 105 of the hot water unit to the second water outlet 107 of the hot water unit through the heat exchanger, so that heating or cooling is performed, heat exchange through the second water outlet 107 and the second water inlet 108 is not needed, and the heat exchange efficiency is improved.

Specifically, the device body 1 is provided with an installation cavity 111, the installation cavity 111 is internally provided with a first through hole 112, a second through hole 113, a third through hole 114 and a fourth through hole 115, the first through hole 112 is communicated with the first cavity 101, the second through hole 113 is communicated with the first cavity 101 through the first communication cavity 109, the third through hole 114 is communicated with the second cavity 102, the fourth through hole 115 is communicated with the second cavity 102 through the second communication cavity 110, the second valve element 3 is arranged in the installation cavity 111, and the first through hole 112 can be communicated with the fourth through hole 115 or the second through hole 113 is communicated with the fourth through hole 115 by rotating the second valve element 3. When the second valve core 3 is communicated with the first through hole 112 and the fourth through hole 115, the refrigerant can flow from the first water inlet 105 to the fourth through hole 115 through the first through hole 112, enter the second communication cavity 110 and flow out from the first water outlet 106; when the second valve core 3 communicates the second through hole 113 and the third through hole 114, the refrigerant can flow into the second communicating chamber 110 from the first water inlet 105, then flow into the third through hole 114 through the second through hole 113, and flow out from the first water outlet 106.

Specifically, the second valve core 3 is provided with a second driving member 9, and the second driving member 9 can drive the second valve core 3 to rotate. The second valve spool 3 is a cylindrical valve spool, and when refrigeration or heating is not needed, the second valve spool 3 can be rotated to ensure that the interface on the second valve spool 3 is not communicated with the first water inlet 105 and the first water outlet 106.

In the present embodiment, the first communicating chamber 109 and the second communicating chamber 110 are each provided in plurality. Each first communicating chamber 109 communicates with at least one second water outlet 107, and each second communicating chamber 110 communicates with at least one second water inlet 108. The provision of a plurality of first communicating chambers 109 and second communicating chambers 110 enables connection of more loads 119 while exchanging heat for a plurality of loads 119.

In this embodiment, the device body 1 is provided with an opening along a first direction (length direction), the first chamber 101, the second chamber 102, the third chamber 103 and the fourth chamber 104 are all communicated with the opening, the opening is provided with the cover plate assembly 4, and the cover plate assembly 4 is detachably connected with the device body 1 to seal the opening. Can dismantle with device body 1 and be connected through being equipped with apron subassembly 4, be convenient for install first case 2, and apron subassembly 4 can guarantee the leakproofness of device body 1.

Specifically, the cover plate assembly 4 includes a first cover plate 41 and a second cover plate 42, a plurality of fifth through holes 411 are provided on the first cover plate 41 corresponding to the first valve core 2, and the plurality of first valve cores 2 are connected to the first driver 5 through the fifth through holes 411. The first driving part 5 is arranged to drive the first valve core 2 to rotate, so that the opening and closing of the second water outlet 107 and the second water inlet 108 are controlled, the rotation angle of the first valve core 2 can be controlled, the refrigerant circulation speed of the communication position of the flow channel 21 on the first valve core 2 and the second water outlet 107 or the second water inlet 108 is controlled, when the low-temperature refrigerant and the high-temperature refrigerant are communicated with the second water outlet 107, the flow rates of the low-temperature refrigerant and the high-temperature refrigerant can be controlled, the temperature of the refrigerant flowing out of the second water outlet 107 can be adjusted in the low-temperature refrigerant and the high-temperature refrigerant with different flow rates, the heat exchange temperatures of different loads 119 are met, and the performance of the loads 119 is improved.

Specifically, a closed accommodating cavity is formed between the first cover plate 41 and the second cover plate 42, the second cover plate 42 is provided with a sixth through hole 421, the first driving member 5 comprises a gear assembly 51 and a motor 52, the gear assembly 51 is installed in the accommodating cavity, the motor 52 is installed on one side of the second cover plate 42 far away from the first cover plate 41, and the motor 52 is connected with the gear assembly 51. A first case 2 is connected with a driven gear, the motor 52 is connected with a driving gear, the driven gear is meshed with the driving gear, and when the motor 52 drives the driving gear to rotate, the driven gear can be driven to rotate together.

In this embodiment, two first valve cores 2 are disposed in the first chamber 101, the second chamber 102, the third chamber 103 and the fourth chamber 104 along the length direction thereof, the two first valve cores 2 in the same chamber are connected by the supporting member 6, the device body 1 is provided with two first driving members 5, the two first driving members 5 are disposed on two opposite sides of the device body 1, and one first driving member 5 drives the four first valve cores 2 on the same side to rotate. Through setting up support piece 6, can support two first case 2 in the same cavity, make the rotation center of first case 2 and the rotation center of first driving piece 5 be in same straight line all the time, guarantee that first case 2 can rotate smoothly, avoid first case 2 skew simultaneously to lead to the refrigerant can follow other second delivery ports 107 and the outflow of second water inlet 108, first case 2 loses the control effect. Two first driving parts 5 are arranged to drive the first valve cores 2 on two sides respectively, and different first valve cores 2 are rotated, so that more combinations of the flow channels 21 of different first valve cores 2 communicated with the second water outlet 107 or the second water inlet 108 are formed, and the first valve cores 2 are controlled to exchange heat for different loads 119 conveniently.

In this embodiment, the first communicating cavity 109 is respectively communicated with the first cavity 101 and the third cavity 103 through two seventh through holes 116, the second communicating cavity 110 is respectively communicated with the second cavity 102 and the fourth cavity 104 through two seventh through holes 116, a planar installation surface is arranged in the four cavities at the position of the seventh through hole 116, an installation plate 7 is detachably arranged on the installation surface, the installation plate 7 is provided with a abutting plane 71 abutting against the installation surface and a matching arc surface 72 matching with the first valve element 2, a sealing ring 8 is arranged between the abutting plane 71 and the installation surface, an avoiding hole 73 is formed in the installation plate 7 corresponding to the seventh through hole 116, and the avoiding hole 73 is communicated with the abutting plane 71 and the matching arc surface 72. Because the side walls of the first valve core 2 and the four cavities are arc-shaped, the installation of the sealing ring 8 can be facilitated by the installation plate 7, the abutting plane 71 of the installation plate 7 abuts against the installation surface, the refrigerant can only flow out of the first communicating cavity 109 and the second communicating cavity 110 from the avoiding hole 73 and the seventh through hole 116 through the flow channel 21 on the first valve core 2, and the installation plate 7 and the sealing ring 8 can ensure that each first communicating cavity 109 and each second communicating cavity 110 are isolated from each other.

As shown in fig. 11, the working principle of the refrigerant heat exchanger is as follows: when the component needs to refrigerate, the refrigerant enters the first chamber 101 through the first water inlet 105 via the first heat exchanger 117, flows into the load 119 through the first communicating cavity 109 and the second water outlet 107, flows from the load 119 to the second water inlet 108 and the second communicating cavity 110, enters the second chamber 102, and returns to the first heat exchanger 117 from the first water outlet 106.

When the component needs to be heated, the refrigerant enters the third chamber 103 through the second heat exchanger 118 via the first water inlet 105, flows into the load 119 through the first communicating chamber 109 and the second water outlet 107, flows from the load 119 to the second water inlet 108 and the second communicating chamber 110, enters the fourth chamber 104, and returns to the second heat exchanger 118 from the first water outlet 106.

When two refrigerants flow out simultaneously, the refrigerant passes through the first heat exchanger 117 and enters the first cavity 101 through the first water inlet 105, the refrigerant passes through the second heat exchanger 118 and enters the third cavity 103 through the first water inlet 105, the two refrigerants are mixed and then flow into the load 119 through the first communicating cavity 109 and the second water outlet 107, then flow to the second water inlet 108 and the second communicating cavity 110 from the load 119 and enter the fourth cavity 104, and then respectively flow back to the first heat exchanger 117 and the second heat exchanger 118 from the first water outlet 106.

The embodiment of the invention also discloses an indirect heat pump system which comprises the refrigerant heat exchange device in any embodiment, so that the pipeline of the heat pump system can be simplified, the occupied space of the heat pump system is reduced, and the heat pump system is convenient to mount on the whole vehicle.

In the description herein, it is to be understood that the terms "upper" and the like are based on the orientation or positional relationship shown in the drawings, which are for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.