CN213064738U

CN213064738U - Reversing valve and heat exchange system

Info

Publication number: CN213064738U
Application number: CN202021525793.6U
Authority: CN
Inventors: 石毅登
Original assignee: Trane Air Conditioning Systems China Co Ltd
Current assignee: Trane Air Conditioning Systems China Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-27
Anticipated expiration: 2030-07-28

Abstract

The application discloses switching-over valve and heat transfer system. The reversing valve comprises a first valve core, a second valve core, a first communicating pipe and a second communicating pipe. The first valve core is provided with a first interface, a second interface and a first channel; the first connection is communicated with the second heat exchanger; the second valve core is provided with a third interface, a fourth interface and a second channel; the third interface is communicated with the first heat exchanger; the first communicating pipe is communicated with an air suction port of the compressor; the second communicating pipe is communicated with an exhaust port of the compressor; when the reversing valve is located at the first position, the second interface is communicated with the first connecting pipe, and the fourth interface is communicated with the second communicating pipe; when the reversing valve is located at the second position, the second interface is communicated with the second communicating pipe, and the fourth interface is communicated with the first connecting pipe. Through rotating first case and second case, alright change first heat exchanger, second heat exchanger, compressor three's intercommunicating relation, realize the effective switching of three's connection intercommunicating relation.

Description

Reversing valve and heat exchange system

Technical Field

The application relates to the field of heat exchange, in particular to a reversing valve and a heat exchange system.

Background

The heat exchange system needs to be switched between a heating state and a cooling state, and when the heat exchange system is switched before the two states, the connection relation among the compressor, the first heat exchanger and the second heat exchanger needs to be changed. Once the stable switching of the connection relation of the three can not be realized, the working condition of the heat exchange system can be influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a switching-over valve and heat transfer system, and it can realize the effective switching to the relation of connection between compressor, first heat exchanger and the second heat exchanger.

According to a first aspect of the present application, there is provided a direction valve configured to change a communication relationship among a compressor, a first heat exchanger, and a second heat exchanger, the direction valve including:

the surface of the first valve core is provided with a first interface and a second interface, a through first channel is also arranged in the first valve core, and the first interface and the second interface are connected and communicated through the first channel; the first interface is configured to be connected and communicated with the second heat exchanger;

the surface of the second valve core is provided with a third interface and a fourth interface, a through second channel is also arranged in the second valve core, and the third interface and the fourth interface are connected and communicated through the second channel; the third interface is configured to be connected and communicated with the first heat exchanger;

a first communication pipe having one end configured to be connected to and communicated with a suction port of the compressor;

a second communication pipe having one end configured to be connected to and communicated with an exhaust port of the compressor;

wherein the diverter valve is configured to switch between a first position and a second position; when the reversing valve is located at the first position, the second interface is connected and communicated with the first communicating pipe, and the fourth interface is connected and communicated with the second communicating pipe; when the reversing valve is located at the second position, the second interface is connected and communicated with the second communicating pipe, and the fourth interface is connected and communicated with the first communicating pipe.

Further, the direction valve further comprises:

the first valve body is provided with a first conduction pipe and a second conduction pipe, and the first valve core is rotatably arranged in the first valve body;

the second valve body is provided with a third conduction pipe and a fourth conduction pipe, and the second valve core is rotatably arranged in the second valve body;

the first conduction pipe and the third conduction pipe are connected and communicated with the first communication pipe, and the second conduction pipe and the fourth conduction pipe are connected and communicated with the second communication pipe; when the reversing valve is located at the first position, the second interface is connected with and communicated with the first conduction pipe, and the fourth interface is connected with and communicated with the fourth conduction pipe; when the reversing valve is located at the second position, the second interface is connected with and communicated with the second conduction pipe, and the fourth interface is connected with and communicated with the third conduction pipe.

Further, the first valve body and the second valve body are arranged at intervals.

Further, the first communicating pipe comprises a first main pipe, a first branch pipe and a second branch pipe, the first main pipe is configured to be connected and communicated with the air suction port of the compressor, the first branch pipe is connected and communicated with the first communicating pipe of the first valve body, and the second branch pipe is connected and communicated with the third communicating pipe of the second valve body;

the second communicating pipe comprises a second main pipeline, a third branch pipeline and a fourth branch pipeline, the second main pipeline is configured to be connected and communicated with the exhaust port of the compressor, the third branch pipeline is connected and communicated with the second conducting pipe of the first valve body, and the fourth branch pipeline is connected and communicated with the fourth conducting pipe of the second valve body.

Furthermore, a first connecting head is arranged on the first valve body, one end of the first connecting head is connected with and communicated with the first interface of the first valve core, and the other end of the first connecting head is configured to be connected with and communicated with the second heat exchanger;

a second connector is arranged on the second valve body, one end of the second connector is connected and communicated with a third connector of the second valve core, and the other end of the second connector is configured to be connected and communicated with the first heat exchanger;

a sealing ring is arranged between the first connecting joint and the first valve core, and the first valve core can rotate relative to the first connecting joint; and a sealing ring is arranged between the second connector and the second valve core, and the second valve core can rotate relative to the second connector.

Further, the axes of the first conduction pipe and the second conduction pipe are overlapped, and the axes of the third conduction pipe and the fourth conduction pipe are overlapped; and/or the presence of a gas in the gas,

when the direction valve is switched from the first position to the second position, or when the direction valve is switched from the second position to the first position, the rotation angle of the valve core is 180 degrees.

Further, the direction valve further comprises:

the first rotating shaft is fixedly connected to the first valve core, and the axial directions of the first valve core and the first rotating shaft are overlapped;

the second rotating shaft is fixedly connected to the second valve core, and the axial directions of the second valve core and the second rotating shaft are overlapped;

wherein the first and second turning shafts are configured to turn synchronously.

Further, the driving device comprises a motor, and the motor is connected with the driving shaft; alternatively, the first and second electrodes may be,

the driving device comprises a motor and a speed reducer, and the motor is connected with the driving shaft through the speed reducer.

Furthermore, the reversing valve further comprises a driving device and a driving shaft, one end of the driving shaft is fixedly connected to the driving device, the driving device is configured to drive the driving shaft to rotate, and the driving shaft is in meshing transmission with the first rotating shaft and the second rotating shaft through gears.

Further, the first channel and/or the second channel is a tubular structure; and/or the presence of a gas in the gas,

the inner diameters of the first channel, the first interface and the second interface are the same; and/or the presence of a gas in the gas,

the inner diameters of the second channel, the third port and the fourth port are the same.

According to a first aspect of the application, a heat exchange system is provided, which comprises a compressor, a second heat exchanger, a first heat exchanger and the reversing valve;

the second heat exchanger is connected and communicated with the first interface of the first valve core, the first heat exchanger is connected and communicated with the third interface of the second valve core, the air suction port of the compressor is connected and communicated with one end of the first communicating pipe, and the air exhaust port of the compressor is connected and communicated with one end of the second communicating pipe.

The technical scheme provided by the application can comprise the following beneficial effects:

in the arrangement, the connection and communication relation among the first heat exchanger, the second heat exchanger and the compressor can be changed by rotating the first valve core and the second valve core, so that the connection and communication relation among the first heat exchanger, the second heat exchanger and the compressor can be effectively switched.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

Fig. 1 is a schematic cross-sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a heat exchange system.

Fig. 3 is a schematic structural diagram of a first valve spool according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a second valve spool according to an embodiment of the present application.

Fig. 5 is another schematic sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 6 is a schematic cross-sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 8 is a schematic cross-sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 9 is a schematic cross-sectional view of a heat exchange system according to an embodiment of the present application.

Fig. 10 is an enlarged view of the area a in fig. 8.

Description of the reference numerals

Heat exchange system 10

Cooling state 11

Heating state 12

Compressor 100

Suction inlet 110

Exhaust port 120

Second heat exchanger 200

First heat exchanger 300

Reversing valve 400

First position 401

Second position 402

First valve core 410

First interface 411

Second interface 412

First passage 413

Second valve core 420

Third interface 421

Fourth interface 422

Second channel 423

First communicating pipe 430

First main pipe 431

First branch conduit 432

Second branch conduit 433

Second communicating pipe 440

Second main pipe 441

Third branch conduit 442

Fourth branch pipe 443

First valve body 450

First conduction pipe 451

Second conduction pipe 452

First connecting head 453

Second valve body 460

Third conduction tube 461

Fourth conducting pipe 462

Second connecting head 463

Sealing ring 470

First rotating shaft 481

Second rotating shaft 482

Drive shaft 490

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The manner in which the following exemplary embodiments are described does not represent all manner of consistency with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

As shown in fig. 1, the present application relates to a heat exchange system 10. The heat exchange system 10 includes a compressor 100, a second heat exchanger 200, a first heat exchanger 300, and a reversing valve 400. The compressor 100, the second heat exchanger 200, and the first heat exchanger 300 are all connected to the direction change valve 400. The direction change valve 400 is configured to change a communication relationship among the discharge port 120 of the compressor 100, the suction port 110 of the compressor 100, the first heat exchanger 300, and the second heat exchanger 200.

The heat exchange system 10 needs to be switched between a cooling state 11 and a heating state 12 during use.

When the heat exchange system 10 is in the cooling state 11, it is necessary to connect and communicate the high pressure discharge port 120 of the compressor 100 with the first heat exchanger 300 and connect and communicate the suction port 110 of the compressor 100 with the second heat exchanger 200. At this time, the first heat exchanger 300 functions as a condenser, and the second heat exchanger 200 functions as an evaporator.

When the heat exchange system 10 is in the heating state 12, it is necessary to connect and communicate the discharge port 120 of the compressor 100 and the second heat exchanger 200, and to connect and communicate the suction port 110 of the compressor 100 and the first heat exchanger 300. At this time, the first heat exchanger 300 functions as an evaporator, and the second heat exchanger 200 functions as a condenser.

As shown in fig. 2, in one design, a piston reversing valve 4001 is used to connect the compressor 100, the second heat exchanger 200, and the first heat exchanger 300. The piston type reversing valve 4001 drives the piston 3 in the cylinder 2 to move through air pressure difference, so that the position of the two-way pipe 4 fixed on the piston 3 is changed, and the two-way pipe 4 can be communicated with different connecting pipes 5 when being located at an obstructed position. Different connection pipes 5 are connected to the discharge port 120 of the compressor 100, the suction port 110 of the compressor 100, the second heat exchanger 200, and the first heat exchanger 300, respectively. Then, by changing the position of the two-way pipe 4, the connection and communication relationship of the different connection pipes 5 can be changed, thereby changing the connection and communication relationship of the discharge port 120 of the compressor 100, the suction port 110 of the compressor 100, the second heat exchanger 200, and the first heat exchanger 300.

However, in the above design, the piston 3 is driven by the high-low pressure difference, which may cause the problem that the piston 3 does not move in place due to the too small air pressure difference, and further cause the motion of the two-way pipe 4 to be not in place. Meanwhile, once solid particle impurities are blocked in the cylinder 2, the problem that the piston 3 does not move in place is caused. Once the two-way pipe 4 does not move in place, the effective switching of the connection and communication relationship among the exhaust port 120 of the compressor 100, the suction port 110 of the compressor 100, the second heat exchanger 200 and the first heat exchanger 300 cannot be realized, thereby seriously affecting the operation efficiency of the heat exchange system 10.

Referring to fig. 1 and 3 to 8, in the present design, the direction valve 400 includes a first valve spool 410, a second valve spool 420, a first communication pipe 430, and a second communication pipe 440. The first valve element 410 and the second valve element 420 have the same structure, and the first connection pipe 430 and the second connection pipe 440 have the same structure.

As shown in fig. 3, a first port 411 and a second port 412 are opened on a surface of the first valve element 410. The first valve spool 410 is also provided with a first passage 413 therethrough. The first port 411 and the second port 412 are connected and communicated through a first passage 413. In the present embodiment, the inner diameters of the first port 411, the second port 412, and the first passage 413 are the same. With the above arrangement, a pressure drop generated when gas flows in the first valve spool 410 can be reduced. Of course, in other embodiments, the inner diameters of the three may not be exactly the same. At the same time, the inner surface of the first passage 413 is smoothly transitioned. With the above arrangement, the pressure drop generated when the gas flows in the first valve spool 410 can be further reduced. The first port 411 is configured to connect and communicate with the second heat exchanger 200 (shown with reference to fig. 5 and 6). The second port 412 may be connected to and communicate with the first communication pipe 430 or the second communication pipe 440 (shown with reference to fig. 7 and 8).

As shown in fig. 4, a third port 421 and a fourth port 422 are formed on a surface of the second valve spool 420. The second spool 420 is further provided with a second through passage 423, and the third port 421 and the fourth port 422 are connected to and communicate with each other through the second passage 423. In the present embodiment, the third port 421, the fourth port 422, and the second passage 423 have the same inner diameter. With the above arrangement, a pressure drop generated when the gas flows in the second spool 420 can be reduced. Of course, in other embodiments, the inner diameters of the three may not be exactly the same. At the same time, the inner surface of the second channel 423 is smoothly transited. With the above arrangement, the pressure drop generated when the gas flows in the second spool 420 can be further reduced. The third port 421 is configured to connect and communicate with the first heat exchanger 300 (shown with reference to fig. 5 and 6). The fourth port 422 may be connected to and communicate with the second communication pipe 440 or the first communication pipe 430 (shown with reference to fig. 7 and 8).

As shown in fig. 5 to 8, one end of the first communication pipe 430 is configured to be connected and communicated with the suction port 110 of the compressor 100, and is also configured to be connected and communicated with the second port 412 or the fourth port 422. When the first communication pipe 430 is connected and communicated with the second port 412, the connection and communication between the suction port 110 of the compressor 100 and the second heat exchanger 200 can be realized; when the first communication pipe 430 is connected to and communicates with the fourth port 422, connection and communication between the suction port 110 of the compressor 100 and the first heat exchanger 300 may be achieved. It should be noted that the first communication pipe 430 may not be connected to and communicated with the second port 412 and the fourth port 422 at the same time.

One end of the second communication pipe 440 is configured to be connected and communicated with the discharge port 120 of the compressor 100, and is also configured to be connected and communicated with the fourth port 422 or the second port 412. When the second connection pipe 440 is connected to and communicated with the fourth port 422, connection and communication between the discharge port 120 of the compressor 100 and the first heat exchanger 300 can be achieved; when the second connection pipe 440 is connected to communicate with the second port 412, connection and communication between the discharge port 120 of the compressor 100 and the second heat exchanger 200 may be achieved. It should be noted that the second communication pipe 440 may not be connected to and communicated with the fourth port 422 and the second port 412 at the same time. Meanwhile, when the first communication pipe 430 and the second communication pipe 440 cannot communicate with the same interface at the same time.

As shown in fig. 5-8, when the heat exchange system 10 needs to be switched between the cooling state 11 and the heating state 12, the reversing valve 400 is configured to be rotationally switched between a first position 401 and a second position 402.

Referring to fig. 5 and 7, when the heat exchange system 10 is in the cooling state 11, the reversing valve 400 is in the first position 401. At this time, the second port 412 is connected to and communicated with the first communication pipe 430, and the fourth port 422 is connected to and communicated with the second communication pipe 440. In other words, the suction port 110 of the compressor 100 is connected to and communicates with the second heat exchanger 200, and the discharge port 120 of the compressor 100 is connected to and communicates with the first heat exchanger 300. In the figure, the dashed arrows indicate the flow direction of the gas on the low pressure side, and the solid arrows indicate the flow direction of the gas on the high pressure side.

Referring to fig. 6 and 8, when the heat exchange system 10 is in the heating state 12, the reversing valve 400 is in the second position 402. At this time, the second connection pipe 440 is connected to and communicated with the second port 412, and the first connection pipe 430 is connected to and communicated with the fourth port 422. In other words, the discharge port 120 of the compressor 100 is connected to and communicates with the second heat exchanger 200, and the suction port 110 of the compressor 100 is connected to and communicates with the first heat exchanger 300. In the figure, the dashed arrows indicate the flow direction of the gas on the low pressure side, and the solid arrows indicate the flow direction of the gas on the high pressure side.

In the present embodiment, the positions of the second port 412 and the fourth port 422, that is, the communication relationships between the first passage 413 and the second passage 423 and the first communication pipe 430 and the second communication pipe 440 are changed by rotating the first valve element 410 and the second valve element 420, so that the connection and communication relationship between the suction port 110 of the compressor 100 and the second heat exchanger 200, the discharge port 120 of the compressor 100 and the first heat exchanger 300 are changed, and the connection and communication relationship among the compressor 100, the first heat exchanger 300 and the second heat exchanger 200 is effectively switched. In the above embodiment, the motor can be moved to drive the first valve core 410 and the second valve core 420 to rotate, so as to avoid the situation that the first valve core 410 and/or the second valve core 420 cannot rotate. Further, the first passage 413 and the second passage 423 are tubular structures. The inner diameters of the first passage 413, the first port 411, and the second port 412 are the same. The inner diameters of the second channel 423, the third port 421 and the fourth port 422 are the same. Through the above arrangement, the pressure drop generated when the gas flows inside the first valve spool 410 and the second valve spool 420 can be reduced, thereby improving the operation efficiency of the heat exchange system 10.

Further, the directional valve 400 further includes a first valve body 450 and a second valve body 460.

As shown in fig. 7 and 8, a first receiving space for receiving the first valve body 450 is provided inside the first valve body 450, and the first valve spool 410 is rotatably provided in the first receiving space in the first valve body 450. The first receiving space, the second receiving space, the first valve element 410 and the second valve element 420 are all cylindrical structures, and the shape of the first receiving space is matched with that of the first valve element 410, and the shape of the second receiving space is matched with that of the second valve element 420, so that the first valve element 410 can be rotatably arranged inside the first valve body 450, and the second valve element 420 can be rotatably arranged inside the second valve body 460. In the above arrangement, the first valve spool 410 and the first valve body 450 are in cylindrical surface contact with each other, and the second valve spool 420 and the second valve body 460 are also in cylindrical surface contact with each other. Since the first valve body 410, the first accommodating space, the second valve body 420, and the second accommodating space are all cylindrical in outline, the machining accuracy thereof is easily controlled, and the gap between the outer wall surface of the first valve body 410 and the inner wall surface of the first accommodating space, and the gap between the outer wall surface of the second valve body 420 and the inner wall surface of the second accommodating space are small. Through the arrangement, the phenomenon that the rotation of the first valve spool 410 and the second valve spool 420 is affected due to the fact that external impurities enter the gap can be avoided or reduced as much as possible, and therefore the stability of the rotation of the first valve spool 410 and the second valve spool 420 is improved.

It should be noted that the first valve body 410 and the second valve body 460 are made interchangeable by the first valve body 410 and the second valve body 420 having the same shape and the first receiving space and the second receiving space having the same shape. In other words, the first valve spool 410 is rotatably disposed not only in the first receiving space of the first valve body 450 but also in the second receiving space of the second valve body 460; similarly, the second valve body 420 may be rotatably disposed not only in the second receiving space of the second valve body 460 but also in the first receiving space of the first valve body 450.

The first valve body 450 further has a first conduction pipe 451 and a second conduction pipe 452, and the first conduction pipe 451 and the second conduction pipe 452 extend from the surface of the first valve body 410 to the first accommodation space, so that the first accommodation space is exposed. The second valve body 460 is internally provided with a second receiving space for receiving the second valve body 460, and the second valve spool 420 is rotatably provided in the second receiving space in the second valve body 460. The second valve body 460 further defines a third conduction pipe 461 and a fourth conduction pipe 462, and the third conduction pipe 461 and the fourth conduction pipe 462 extend from the surface of the second valve element 420 to the second accommodating space, so that the second accommodating space is exposed. The first conduction pipe 451 and the third conduction pipe 461 are connected to and communicated with the first communication pipe 430, and the second conduction pipe 452 and the fourth conduction pipe 462 are connected to and communicated with the second communication pipe 440.

Referring to fig. 5 and 7, when the heat exchange system 10 is in the cooling state 11, that is, when the direction valve 400 is in the first position 401, the second port 412 is connected to and communicated with the first conduction pipe 451, and the fourth port 422 is connected to and communicated with the fourth conduction pipe 462. At this time, the first passage 413 and the first communication pipe 430 in the first valve spool 410 are connected and communicated, so that the second heat exchanger 200 and the suction port 110 of the compressor 100 are connected and communicated. The second passage 423 of the second spool 420 and the second connection pipe 440 are connected and communicated such that the first heat exchanger 300 and the discharge port 120 of the compressor 100 are connected and communicated.

Referring to fig. 6 and 8, when the heat exchange system 10 is in the heating state 12, that is, when the direction valve 400 is in the second position 402, the second port 412 is connected to and communicated with the second conduction pipe 452, and the fourth port 422 is connected to and communicated with the third conduction pipe 461. At this time, the first passage 413 of the first valve spool 410 and the second communication pipe 440 are connected and communicated, so that the second heat exchanger 200 and the discharge port 120 of the compressor 100 are connected and communicated. The second passage 423 of the second spool 420 and the first communication pipe 430 are connected and communicated such that the first heat exchanger 300 is connected and communicated with the suction port 110 of the compressor 100.

By providing the first communication pipe 430 and the second communication pipe 440, and both the first valve spool 410 and the second valve spool 420 can rotate relative to the first communication pipe 430 and the second communication pipe 440, the connection relationship between the first valve spool 410 and the second valve spool 420 and the first communication pipe 430 and the second communication pipe 440 is changed, and thus the connection relationship between the discharge port 120 of the compressor 100, the suction port 110 of the compressor 100, and the first heat exchanger 300 and the second heat exchanger 200 is changed.

In this embodiment, the first communicating pipe 430 and the second communicating pipe 440 are both three-way connecting pipes. Of course, in other embodiments, the first connection pipe 430 and the second connection pipe 440 may be connection pipes of other shapes.

As shown in fig. 6 and 7, the first communication pipe 430 includes a first main pipe 431, a first branch pipe 432, and a second branch pipe 433. The first main pipe 431 is connected to and communicated with the suction port 110 of the compressor 100. The first branch pipe 432 is connected to and communicated with the first conduit 451 of the first valve body 450. The second branch conduit 433 is connected to and communicates with the third conduit 461 of the second valve body 460. The second communication pipe 440 includes a second main pipe 441, a third branch pipe 442, and a fourth branch pipe 443. The second main pipe 441 is connected to and communicates with the discharge port 120 of the compressor 100. The third branch conduit 442 is connected to and communicated with the second conduit 452 of the first valve body 450, and the fourth branch conduit 443 is connected to and communicated with the fourth conduit 462 of the second valve body 460.

The first connection pipe 430 and the second connection pipe 440 are provided in the form of a three-way connection pipe, so that the first conduction pipe 451 of the first valve body 450 and the third conduction pipe 461 of the second valve body 460 can be simultaneously connected and connected to the first connection pipe 430. The second conduction pipe 452 of the first valve body 450 and the fourth conduction pipe 462 of the second valve body 460 may be connected to the second communication pipe 440 at the same time.

Further, the first main pipe 431 and the first branch pipe 432 in the first communication pipe 430 are smoothly transited, and the first main pipe 431 and the second branch pipe 433 are smoothly transited. The second main duct 441 and the third branch duct 442 of the second communication pipe 440 are smoothly transitioned, and the second main duct 441 and the fourth branch duct 443 are smoothly transitioned. Through the above arrangement, the pressure drop generated when the gas flows in the first communicating pipe 430 and the second communicating pipe 440 is reduced as much as possible, so as to ensure the operation efficiency of the heat exchange system 10.

In the present embodiment, the first conduction pipe 451 and the second conduction pipe 452 have their axes coincident with each other, and the third conduction pipe 461 and the fourth conduction pipe 462 have their axes coincident with each other. When the direction valve 400 is switched from the first position 401 to the second position 402, or when the direction valve 400 is switched from the second position 402 to the first position 401, the rotation angle of the spool is 180 °.

As shown in fig. 5 and 6, in the present embodiment, the first valve body 450 is provided with a first connection port 453. The first connection head 453 is fixedly connected to the first valve body 450. One end of the first connection port 453 is connected to and communicated with the first port 411 of the first valve body 410, and the other end of the first connection port 453 is configured to be connected to and communicated with the second heat exchanger 200. The second valve body 460 is provided with a second connector 463. The second connector 463 is fixedly connected to the second valve body 460. One end of the second connection head 463 is connected to and communicated with the third port 421 of the second valve spool 420, and the other end of the second connection head 463 is configured to be connected to and communicated with the first heat exchanger 300. By providing the fixed first and

second connectors

453 and 463, the first valve spool 410 of the first valve body 450 is facilitated to be connected and communicated with the second heat exchanger 200, and the second valve spool 420 of the second valve body 460 is facilitated to be connected and communicated with the first heat exchanger 300.

As shown in fig. 9 and 10, a packing 470 is provided between the first connection port 453 and the first valve spool 410, and the first valve spool 410 is rotatable with respect to the first connection port 453. A sealing ring 470 is also provided between the second connecting head 463 and the second valve spool 420, and the second valve spool 420 is rotatable relative to the second connecting head 463. By providing the sealing rings 470, the first connection port 453 and the first valve spool 410, and the second connection port 463 and the second valve spool 420 can be connected in a sealing manner, thereby preventing gas leakage. At the same time, the restriction of the rotation of the first and second valve spools 410 and 420 may be avoided.

Further, the first valve body 450 and the second valve body 460 are spaced apart. Through the arrangement, heat exchange caused by clinging between the heat exchanger and the heat exchanger can be avoided, heat loss is reduced as much as possible, and the operation efficiency of the heat exchange system 10 is improved.

Further, the direction valve 400 further includes a first rotating shaft 481 and a second rotating shaft 482. The first rotating shaft 481 is fixedly connected to the first valve element 410 to drive the first valve element 410 to rotate. Also, the axial directions of the first spool 410 and the first rotation shaft 481 are overlapped so that the first spool 410 can rotate about its own axis. In the present embodiment, an opening is provided below the first valve body 450, the opening extending from a surface of the first valve body 450 to the first receiving space. One end of the first rotating shaft 481 passes through the opening and is fixed to the bottom surface of the first receiving space. The second rotating shaft 482 is fixedly connected to the second valve spool 420 to rotate the second valve spool 420. The axial directions of the second spool 420 and the second rotary shaft 482 are aligned so that the second spool 420 can rotate about its own axis. Wherein the first and second

rotating shafts

481 and 482 are configured to rotate in synchronization so that the first and second valve spools 410 and 420 can rotate in synchronization. The first rotation shaft 481 and the first valve spool 410 may be integrally formed; of course, the first rotation shaft 481 and the first valve core 410 may be two separate parts, and they may be fixedly connected by welding, joggling, or the like. Similarly, the relationship between the second rotary shaft 482 and the second spool 420 is also the same, i.e., the second rotary shaft 482 and the second spool 420 may be an integral molding; of course, the second rotary shaft 482 and the second valve spool 420 may be two separate members, and they may be fixedly coupled by welding, dovetail joint, or the like.

Further, the direction valve 400 further comprises a driving device and a driving shaft 490, and one end of the driving shaft 490 is fixedly connected to the driving device so that it can be driven by the driving device. The drive shaft 490 is geared with the first and second

rotating shafts

481 and 482. Through the above arrangement, the driving shaft 490 can transmit power conveniently, and simultaneously, the first transmission shaft 481 and the second transmission shaft 482 are both meshed with the same driving shaft 490, so as to ensure the synchronous rotation of the first transmission shaft 481 and the second transmission shaft 482.

In the present embodiment, the driving device includes a motor and a decelerator. The motor is connected with the driving shaft 490 through a speed reducer so that the driving shaft 490 can obtain a proper rotating speed and power. Of course, in other embodiments, the driving device may also include only a motor, and the motor is connected to the driving shaft 490.

The driving shaft 490 may further be provided with a rotation limiting structure, and when the driving shaft 490 is rotated in place, the rotation limiting structure may lock the position of the driving shaft 490, so that the reversing valve 400 may be stably located at the first position 401 or the second position 402, thereby ensuring that the connection relationship between the compressor 100, the second heat exchanger 200 and the first heat exchanger 300 is stable when the heat exchange system 10 is in the cooling state 11 and the heating state, and further ensuring the operation efficiency of the heat exchange system 10.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A reversing valve configured to change a communication relationship between a compressor, a first heat exchanger, and a second heat exchanger, the reversing valve comprising:

wherein the diverter valve is configured to rotationally switch between a first position and a second position; when the reversing valve is located at the first position, the second interface is connected and communicated with the first communicating pipe, and the fourth interface is connected and communicated with the second communicating pipe; when the reversing valve is located at the second position, the second interface is connected and communicated with the second communicating pipe, and the fourth interface is connected and communicated with the first communicating pipe.

2. The reversing valve of claim 1, further comprising:

3. The reversing valve of claim 2, wherein the first valve body and the second valve body are spaced apart.

4. The reversing valve according to claim 2, wherein the first communicating pipe comprises a first main pipe, a first branch pipe and a second branch pipe, the first main pipe is configured to be connected and communicated with a suction port of the compressor, the first branch pipe is connected and communicated with a first communicating pipe of the first valve body, and the second branch pipe is connected and communicated with a third communicating pipe of the second valve body;

5. The reversing valve according to claim 2, wherein a first connecting joint is arranged on the first valve body, one end of the first connecting joint is connected with and communicated with the first interface of the first valve core, and the other end of the first connecting joint is configured to be connected with and communicated with the second heat exchanger;

6. The reversing valve of claim 2, wherein the axes of the first and second conduits coincide and the axes of the third and fourth conduits coincide; and/or the presence of a gas in the gas,

7. The reversing valve of claim 1, further comprising:

8. The reversing valve of claim 7, further comprising a drive mechanism and a drive shaft, one end of the drive shaft being fixedly coupled to the drive mechanism, the drive mechanism being configured to drive the drive shaft in rotation, and the drive shaft being geared with the first and second rotatable shafts.

9. The reversing valve of claim 8, wherein said drive means comprises a motor, said motor being connected to said drive shaft; alternatively, the first and second electrodes may be,

10. The reversing valve according to any of claims 1-9, wherein said first passage and/or said second passage is of tubular construction; and/or the presence of a gas in the gas,

11. A heat exchange system comprising a compressor, a second heat exchanger, a first heat exchanger, and a reversing valve according to any one of claims 1 to 10;