CN114877428B

CN114877428B - Multi-position reversing valve, air conditioning system and air conditioner

Info

Publication number: CN114877428B
Application number: CN202110162986.2A
Authority: CN
Inventors: 汤奇雄; 赵家强; 欧汝浩; 刘和成
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2023-09-19
Anticipated expiration: 2041-02-05
Also published as: CN114877428A

Abstract

The application provides a multi-position reversing valve, an air conditioning system and an air conditioner. Wherein, multiposition reversing valve includes: the main valve body is provided with a plurality of valve ports, and at least part of the valve ports are communicated with each other; the pilot valve is communicated with the main valve body through a connecting pipe and can change the communication state among a plurality of valve ports; wherein, at least two valve ports are refrigerant inlets and are used for being connected with exhaust ports of the double-exhaust compressor. According to the technical scheme, the refrigerant flow direction of the air conditioning system can be realized by changing the communication state of the valve ports, the number of reversing valves in the air conditioning system is reduced, the complexity and the control difficulty of the air conditioning system are reduced, the cost is reduced, and particularly when the air conditioning system is applied to an air conditioning system comprising double exhaust compressors, the indoor unit can be defrosted without stopping, the heating effect in the defrosting process can be effectively improved, and the use experience of a user is improved.

Description

Multi-position reversing valve, air conditioning system and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to a multi-position reversing valve, an air conditioning system and an air conditioner.

Background

At present, in a traditional heat pump air conditioning system, the switching of refrigeration and heating is usually realized through a four-way reversing valve, fins of an outdoor heat exchanger are easy to frost when the outdoor temperature is reduced, heating performance is affected, a traditional air conditioning system needs to frequently switch a defrosting mode so as to defrost the outdoor heat exchanger by utilizing a high-pressure high-temperature refrigerant discharged by a compressor, but the conventional defrosting mode needs to frequently reverse the refrigerant in the system, so that the intermittent cold air blowing in an indoor heat supply process is caused, heating effect is affected, and user experience is poor. In order to realize the continuous defrosting of the indoor unit, the prior scheme adopts a mode of adopting a plurality of valve groups or four-way reversing valves, but the air conditioning system is more complex, the control difficulty is higher, and the cost is higher.

Disclosure of Invention

According to embodiments of the present application, it is intended to improve at least one of technical problems existing in the prior art or related art.

To this end, it is an object of an embodiment according to the present application to provide a multi-position reversing valve.

It is another object of an embodiment according to the present application to provide an air conditioning system.

It is a further object of an embodiment according to the present application to provide an air conditioner.

In order to achieve the above object, an embodiment according to a first aspect of the present application provides a multi-position reversing valve for an air conditioning system including a dual discharge compressor, comprising: the main valve body is provided with a plurality of valve ports, and at least part of the valve ports are communicated with each other; the pilot valve is communicated with the main valve body through a connecting pipe and can change the communication state among a plurality of valve ports; wherein, at least two valve ports are refrigerant inlets and are used for being connected with exhaust ports of the double-exhaust compressor.

According to an embodiment of the first aspect of the present application, a multi-position reversing valve includes a main valve body and a pilot valve. The main valve body is provided with a plurality of valve ports which can be communicated with each other, wherein at least two valve ports are refrigerant inlets, so that the refrigerant inlets are utilized to be connected with exhaust ports of the double-exhaust compressor, and the multi-position reversing valve can be suitable for an air conditioning system comprising the double-exhaust compressor. The pilot valve is communicated with the main valve body by the connecting pipe, so that the communication state among a plurality of valve ports of the main valve body is changed through the refrigerant flow between the pilot valve and the main valve body, and the refrigerant flow direction in the air conditioning system is changed.

It should be noted that, the air conditioning system in this scheme is not limited to the household air conditioning heat pump system, but is also applicable to the automobile air conditioning heat pump system.

According to the multi-position reversing valve in the scheme, the refrigerant flow direction of the air conditioning system can be realized by changing the communication state of the valve ports, the number of the reversing valves in the air conditioning system is reduced, the complexity and the control difficulty of the air conditioning system are reduced, the cost is reduced, and particularly when the multi-position reversing valve is applied to the air conditioning system comprising double exhaust compressors, the indoor unit can be realized without stopping defrosting, the heating effect in the defrosting process can be effectively improved, and the use experience of a user is improved.

In addition, the multi-position reversing valve in the technical scheme provided in the embodiment of the application can also have the following additional technical characteristics:

in the above technical solution, the main valve body includes: a main valve housing; the main valve block is arranged in the main valve shell; the pilot valve can drive the main valve block to move in the main valve shell so as to change the communication state among the valve ports.

In this technical solution, the main valve body comprises a main valve housing and a main valve block provided in the main valve housing. The main valve shell is provided with a plurality of valve ports, the main valve block can move in the main valve shell, and the valve ports are opened or closed through relative movement, so that the communication state among the valve ports is changed, and the flow direction of a refrigerant is changed. The pilot valve can supply power to the main valve block through the flow of the refrigerant between the pilot valve and the main valve body, and drives the main valve block to move in the main valve body, so that the control of the main valve body is realized.

In the above technical solution, the main valve block includes: the valve block body, there are end plates at both ends of the valve block body separately, the end plate offsets with inner sidewall of the main valve body, and connect with opposite end on the main valve body through the spring; the first sealing structure is arranged between the two end plates and connected with the valve block body, is of a groove-shaped structure and surrounds the side wall of one side of the main valve shell to form a first cavity; the second sealing structure is connected to the valve block body and positioned between the two end plates, and the second sealing structure and the first sealing structure are arranged at intervals; the two sides of the main valve shell are respectively provided with a valve port, the first sealing structure, the second sealing structure, one end plate and the side wall of the main valve shell are surrounded to form a second cavity, the second sealing structure, the other end plate and the side wall of the main valve shell are surrounded to form a third cavity, and the second cavity and the third cavity are isolated from each other.

In this technical scheme, the main valve piece specifically includes valve piece body, first seal structure and second seal structure. End plates are arranged at two ends of the valve block body and are propped against the inner side wall of the main valve shell through the end plates so as to form a seal by using the end plates; each end plate is connected with the opposite end of the main valve shell through a spring so that the valve block body can be reset. The first sealing structure and the second sealing structure are arranged between the two end plates of the valve block body and are connected with the valve block body so as to move together with the valve block body. The first sealing structure is a groove-shaped structure, and an opening of the groove-shaped structure faces one side of the main valve shell and surrounds the inner side wall of the main valve shell to form a first cavity; the second seal structure is arranged at intervals with the first seal structure, so that a second cavity is formed by encircling the second seal structure, the first seal structure, one end plate and the side wall of the main valve shell, a third cavity is formed by encircling the second seal structure, the other end plate and the side wall of the main valve shell, the second cavity is positioned on one side, close to the first seal structure, of the second seal structure, and the third cavity is positioned on one side, far away from the first seal structure, of the second seal structure and is mutually isolated. The side walls of the two sides of the main valve shell are provided with valve ports, and when the main valve block moves to different positions, the first chamber, the second chamber and the third chamber are utilized to form communication among different valve ports, so that the flow direction of the refrigerant is changed.

In the above technical solution, the plurality of valve ports includes: two end valve openings are respectively arranged at two ends of the main valve shell; the first valve port, the second valve port, the third valve port and the fourth valve port are arranged on one side of the main valve shell, the fifth valve port and the sixth valve port are refrigerant inlets and are arranged on the other side of the main valve shell, when the main valve block is at an initial position, the first valve port and the sixth valve port are communicated through a second chamber, the second valve port and the third valve port are communicated through a first chamber, and the fourth valve port and the fifth valve port are communicated through a third chamber; the main valve block moves to a first position, the first valve port, the fifth valve port and the sixth valve port are communicated through a second chamber, and the second valve port, the third valve port and the fourth valve port are communicated through the first chamber; the main valve block moves to a second position, the first valve port is communicated with the second valve port through a first chamber, the third valve port is communicated with the sixth valve port through a second chamber, and the fourth valve port is communicated with the fifth valve port through a third chamber.

In this technical solution, the plurality of ports of the main valve body comprises in particular two end ports and six side ports. The two end valve openings are respectively arranged at the two ends of the main valve shell; the six side valve ports comprise a first valve port, a second valve port, a third valve port and a fourth valve port which are arranged on one side of the main valve shell, and a fifth valve port and a sixth valve port which are arranged on the other side of the main valve shell, wherein the fifth valve port and the sixth valve port are refrigerant inlets and are used for being connected with exhaust ports of the double-exhaust compressor. The main valve block can be switched among an initial position, a first position and a second position, so that when the main valve block is in different positions, the communication states among the valve ports are different, and the flow direction of the refrigerant is changed by utilizing the position switching of the main valve block.

In the above technical solution, the pilot valve includes: the guide valve shell is provided with communication ports at two sides respectively; the pilot valve block is arranged in the pilot valve shell, two ends of the pilot valve block are respectively connected with two ends of the pilot valve shell through springs, and the pilot valve block is of a groove-shaped structure and surrounds the side wall of one side of the pilot valve shell to form a fourth cavity; and the electromagnetic controller is used for driving the pilot valve block to move.

In the technical scheme, the pilot valve specifically comprises a pilot valve shell, a pilot valve block and an electromagnetic controller. The pilot valve block is arranged in the pilot valve shell and can move relative to the pilot valve shell. The electromagnetic controller is arranged to control the movement of the pilot valve block by utilizing electromagnetic action; through setting up pilot valve piece both ends and passing through spring coupling on the pilot valve casing to when the electromagnetic controller outage, utilize the elasticity effect of spring to make the pilot valve piece reset. The pilot valve block is of a groove structure, and a fourth cavity is formed through the pilot valve block and the side wall of one side of the pilot valve shell, so that when the pilot valve block moves to different positions, different communication ports are communicated, and the main valve body is controlled.

In the technical scheme, a first communication port is formed in one side, far away from the fourth chamber, of the pilot valve shell, and the first communication port is communicated with the sixth valve port through a connecting pipe; the pilot valve shell is provided with a second communication port, a third communication port and a fourth communication port on one side close to the fourth cavity, the second communication port and the fourth communication port are communicated with two end valve ports of the main valve body through connecting pipes, and the third communication port is communicated with the second valve port through connecting pipes; when the pilot valve block is positioned at the initial position, the second communication port and the fourth communication port are positioned outside the fourth cavity, and the third communication port is positioned in the fourth cavity; the pilot valve block moves to a third position, the first communication port is communicated with the second communication port, the third communication port is communicated with the fourth communication port, and the main valve block is driven to move to a first position; the pilot valve block moves to a fourth position, the first communication port is communicated with the fourth communication port, the second communication port is communicated with the third communication port, and the main valve block is driven to move to a second position.

In the technical scheme, one side of the pilot valve shell, which is far away from the fourth chamber, is provided with a first communication port, and one side, which is close to the fourth chamber, is provided with a second communication port, a third communication port and a fourth communication port. The first communication port is communicated with a sixth valve port of the main valve body by a connecting pipe so that the refrigerant discharged from the exhaust port of the double-exhaust compressor can flow into the pilot valve; the second communication port and the fourth communication port are respectively connected with two end valve ports of the main valve body by connecting pipes, so that the refrigerant in the pilot valve can flow into any one end of the main valve body to drive the main valve block to move; the third communication port is communicated with the second valve port by a connecting pipe, so that the third communication port can be communicated with an air return port of the double-exhaust compressor, and the backflow of the refrigerant is realized. The pilot valve block can be switched among an initial position, a third position and a fourth position, so that the communication states among different communication ports are changed, and further the movement of the main valve block of the main valve body is controlled, and the control of the flow direction of the refrigerant is realized.

In an embodiment of a second aspect of the present application, there is provided an air conditioning system including: a double exhaust gas compressor; the multi-position reversing valve according to any one of the embodiments of the first aspect, wherein two refrigerant inlets of a main valve body of the multi-position reversing valve are connected with two exhaust ports of the double-exhaust compressor through pipelines, and one valve port of the main valve body is connected with an air return port of the double-exhaust compressor; the outdoor heat exchanger and the indoor heat exchanger component are respectively connected with different valve ports on the multi-position reversing valve through pipelines, and form a loop; wherein, be equipped with the throttling element in the pipeline between outdoor heat exchanger and the indoor heat exchanger subassembly.

According to an embodiment of the second aspect of the present application, an air conditioning system includes a dual discharge compressor, a multi-position reversing valve, an outdoor heat exchanger, and an indoor heat exchanger assembly. Two valve ports serving as refrigerant inlets in the multi-position reversing valve are connected with two exhaust ports of the double-exhaust compressor through pipelines, and the other valve port of the multi-position reversing valve is connected with an air return port of the double-exhaust compressor through a pipeline; the outdoor heat exchanger and the indoor heat exchanger component are connected with the multi-position reversing valve through the pipeline to form a loop, so that the communication state between the exhaust port and the return port of the double-exhaust compressor and the outdoor heat exchanger and the indoor heat exchanger component is controlled through the multi-position reversing valve, and the flow direction of a refrigerant in the air conditioning system is changed, and different working modes of the air conditioning system, such as a refrigerating mode, a heating mode, a defrosting mode and the like, are realized. And a throttling part is arranged between the outdoor heat exchanger and the indoor heat exchanger component and used for throttling the refrigerant.

According to the air conditioning system in the scheme, a plurality of working modes of the whole air conditioning system can be realized only by using one multi-position reversing valve, the complexity and the control difficulty of the air conditioning system are reduced, and the cost is reduced. The air conditioning system in the scheme is not limited to a household air conditioning heat pump system, and is also suitable for an automobile air conditioning heat pump system.

In addition, the air conditioning system in this solution further has all the advantages of the multi-position reversing valve in any one of the embodiments of the first aspect, which are not described herein.

In addition, the multi-position reversing valve in the technical scheme provided by the embodiment of the application can also have the following additional technical characteristics:

in the above technical solution, the indoor heat exchanger assembly includes: a wind passing cavity; the first indoor heat exchanger and the second indoor heat exchanger are arranged in the air passing cavity and are arranged at intervals along the extending direction of the air passing cavity; the wind shielding structure is movably arranged between the first indoor heat exchanger and the second indoor heat exchanger and can shield airflow flowing to the second indoor heat exchanger.

In this technical scheme, indoor heat exchanger subassembly specifically includes wind cavity, first indoor heat exchanger, second indoor heat exchanger and wind shielding structure. The first indoor heat exchanger and the second indoor heat exchanger are both arranged in the air passing cavity; the air passing cavity can guide air flow to pass through so as to promote the heat exchange between the first indoor heat exchanger and the second indoor heat exchanger and the outside. The wind shielding structure is arranged between the first indoor heat exchanger and the second indoor heat exchanger and is movable so as to shield airflow flowing to the second indoor heat exchanger according to use requirements. Particularly, in the defrosting mode, the first indoor heat exchanger is used as a condenser to release heat, the second indoor heat exchanger is used as an evaporator to absorb heat, and the defrosting without stopping can be realized, at the moment, the second indoor heat exchanger is shielded by the wind shielding structure, so that cold air flow generated by the indoor heat exchanger assembly can be reduced, hot air flow is increased, and the sectional heating is realized, thereby improving the heating effect in the defrosting mode.

In the above technical scheme, the second indoor heat exchanger is arranged on the lee side of the first indoor heat exchanger, and the cross-sectional area of the second indoor heat exchanger is smaller than that of the first indoor heat exchanger.

In this technical scheme, because according to the use needs, need shelter from the second heat exchanger sometimes, through setting up the indoor heat exchanger of second and lie in the lee side of first indoor heat exchanger, reducible influence to the air current that flows into the indoor heat exchanger of first. The cross-sectional area of the second indoor heat exchanger is smaller than that of the first indoor heat exchanger, so that a space is reserved for the wind shielding structure, when the wind shielding structure is in an open state (namely, the second indoor heat exchanger is not shielded), the wind shielding structure cannot interfere with the air passing cavity, the arrangement mode is relatively simple, the size of the air passing cavity is not required to be enlarged, and the space utilization rate is improved. Of course, the shape of the air passing cavity may be changed, for example, the air passing cavity is configured in a Y-shaped structure, and at this time, the first indoor heat exchanger and the second indoor heat exchanger with the same cross-sectional area may be adopted, so that the respective functions may be realized.

In an embodiment according to a third aspect of the present application, there is provided an air conditioner including: the air conditioning system of any of the embodiments of the second aspect above; the outdoor unit shell, the double-row air compressor, the multi-position reversing valve and the outdoor heat exchanger of the air conditioning system are arranged in the outdoor unit shell; the outdoor fan is arranged in the outdoor unit shell and corresponds to the outdoor heat exchanger; an indoor unit casing, wherein an indoor heat exchanger component of the air conditioning system is arranged in the indoor unit casing; the indoor fan is arranged in the indoor unit shell and corresponds to the air passing cavity of the indoor heat exchanger component.

In this aspect, the air conditioner includes the air conditioning system of any one of the embodiments of the second aspect, an outdoor unit casing, an indoor unit casing, an outdoor fan, and an indoor fan. Wherein, the double-row air compressor, the multi-position reversing valve, the outdoor heat exchanger and the outdoor fan in the air conditioning system are arranged in the outdoor unit shell, thereby forming the outdoor unit of the air conditioner; an indoor heat exchanger component and an indoor fan in an air conditioning system are arranged in an indoor unit shell, so that an indoor unit of the air conditioner is formed. The integrated indoor unit and the integrated outdoor unit are formed, so that the transportation and the installation are convenient.

In addition, the air conditioner in this solution further has all the advantages of the air conditioning system in any one of the embodiments of the second aspect, which are not described herein.

Additional aspects and advantages of embodiments of the application will be made apparent in the description which follows or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of embodiments of the application will be apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

FIG. 2 shows a schematic view of a main valve body according to one embodiment of the application;

FIG. 3 illustrates a schematic diagram of a pilot valve according to one embodiment of the application;

FIG. 4 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

FIG. 5 shows a schematic diagram of a four-way valve assembly;

FIG. 6 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

FIG. 7 shows a schematic diagram of a four-way valve assembly;

FIG. 8 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

FIG. 9 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

FIG. 10 shows a schematic diagram of an air conditioning system according to one embodiment of the application;

FIG. 11 shows a schematic diagram of a multi-position reversing valve according to one embodiment of the application;

fig. 12 shows a schematic diagram of a four-way valve assembly.

The correspondence between the reference numerals and the component names in fig. 1 to 12 is as follows:

101 four-way valve, 102 control valve;

a 1 multi-position reversing valve, 11 main valve body, 111 main valve housing, 1111 first valve port, 1112 second valve port, 1113 third valve port, 1114 fourth valve port, 1115 fifth valve port, 1116 sixth valve port, 1117 end valve port, 1118 refrigerant inlet, 112 main valve block, 1121 valve block body, 1122 end plate, 1123 first seal structure, 1124 second seal structure, 113 first chamber, 114 second chamber, 115 third chamber, 12 pilot valve, 121 pilot valve housing, 1211 first communication port, 1212 second communication port, 1213 third communication port, 1214 fourth communication port, 122 pilot valve block, 1221 fourth chamber, 123 electromagnetic controller, 2 air conditioning system, 21 double-row air compressor, 211 first exhaust port, 212 second exhaust port, 213 return port, 22 outdoor heat exchanger, 23 indoor heat exchanger assembly, 231 over-air chamber, 232 first indoor heat exchanger, 233 second indoor heat exchanger, 234 windbreak structure, 241 first throttle member, 242 second throttle member, 242 third throttle member, 3 air conditioner, 31 outdoor machine housing, 32 outdoor machine, indoor fan housing, 33 indoor fan.

Detailed Description

In order that the above-recited objects, features and advantages of embodiments according to the present application can be more clearly understood, a further detailed description of embodiments according to the present application will be rendered by reference to the appended drawings and detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the application, however, embodiments according to the application may be practiced otherwise than as described herein, and thus the scope of the application is not limited to the specific embodiments disclosed below.

A multi-position reversing valve, an air conditioning system, and an air conditioner according to some embodiments of the present application are described below with reference to fig. 1 to 12.

Example 1

In this embodiment a multi-position reversing valve 1 is provided which can be used in an air conditioning system comprising a dual discharge compressor.

As shown in fig. 1, the multi-position directional valve 1 includes a main valve body 11 and a pilot valve 12. Wherein the main valve body 11 is used for communicating with a double-exhaust compressor and other devices in an air conditioning system, and the pilot valve 12 is used for controlling the main valve body 11.

The main valve body 11 is provided with a plurality of valve ports, and the valve ports can be mutually communicated. At least two ports are refrigerant inlets 1118 for connecting the exhaust ports of the dual exhaust compressor, for example, the upper two ports in fig. 1, so that the multi-port reversing valve 1 can be applied to an air conditioning system including the dual exhaust compressor. The pilot valve 12 is communicated with the main valve body 11 through a connecting pipe, so that the refrigerant between the pilot valve 12 and the main valve body 11 can flow, the communication state among a plurality of valve ports of the main valve body 11 is changed, and the refrigerant flow direction in the air conditioning system is changed.

The multi-position reversing valve 1 in the embodiment can realize the refrigerant flow direction of the air conditioning system by changing the communication state of the valve ports, reduces the number of the reversing valves in the air conditioning system, reduces the complexity and the control difficulty of the air conditioning system, is beneficial to reducing the cost, can realize the non-stop defrosting of the indoor unit particularly when being applied to the air conditioning system comprising double exhaust compressors, can effectively improve the heating effect in the defrosting process, and is beneficial to improving the use experience of users.

Note that the air conditioning system in this embodiment is not limited to the home air conditioning heat pump system, and is also applicable to an automobile air conditioning heat pump system.

Example two

In this embodiment, a multi-position reversing valve 1 is provided, which is further improved on the basis of the first embodiment.

As shown in fig. 1 and 2, the main valve body 11 includes a main valve housing 111 and a main valve block 112 provided in the main valve housing 111. The main valve housing 111 is provided with a plurality of valve ports, and the main valve block 112 is movable in the main valve housing 111, and opens or closes the valve ports by a relative movement, thereby changing a communication state between the plurality of valve ports, and further changing a flow direction of a refrigerant. The pilot valve 12 can supply power to the main valve block 112 through the flow of the refrigerant between the pilot valve and the main valve body 11, and drives the main valve block 112 to move in the main valve housing 111, thereby realizing control of the main valve body 11.

Specifically, the main valve block 112 specifically includes a valve block body 1121, a first sealing structure 1123, and a second sealing structure 1124. End plates 1122 are arranged at two ends of the valve block body 1121, and each end plate 1122 is connected with the opposite end of the main valve shell 111 through a spring so that the valve block body 1121 can be reset; each end plate 1122 abuts an inner side wall of the main valve housing 111 to effect a seal. The first and second sealing structures 1123, 1124 are disposed between the two end plates 1122 of the valve block body 1121 and are each connected to the valve block body 1121 for movement with the valve block body 1121.

The first sealing structure 1123 is a groove structure, and the opening of the groove structure faces one side of the main valve housing 111, and the first sealing structure 1123 abuts against the inner sidewall of one side of the main valve housing 111 and forms a first chamber 113. The second sealing structure 1124 is spaced apart from the first sealing structure 1123 in the direction of movement of the valve block body 1121, i.e., the second sealing structure 1124 is located between the first sealing structure 1123 and one of the end plates 1122 of the valve block body 1121, and the second sealing structure 1124 abuts against the inner sidewall of the main valve housing 111. The space is divided into two isolated spaces by the first sealing structure 1123, the second sealing structure 1124, the two end plates 1122 and the side wall of the main valve housing 111, specifically, the first sealing structure 1123, the second sealing structure 1124, one of the end plates 1122 and the side wall of the main valve housing 111 surround to form the second chamber 114, the second sealing structure 1124 surrounds to the other end plate 1122 and the side wall of the main valve housing 11 to form the third chamber 115, that is, the space between the second sealing structure 1124 and the first sealing structure 1123 forms the second chamber 114, the second chamber 114 is located at one side of the second sealing structure 1124 close to the first sealing structure 1123, the third chamber 115 is formed between the second sealing structure 1124 and the corresponding end plate 1122, and the third chamber 115 is located at one side of the second sealing structure 1124 far from the first sealing structure 1123.

Valve ports are provided on side walls of both sides of the main valve housing 111, and refrigerant is allowed to flow in the respective interiors of the first chamber 113, the second chamber 114, and the third chamber 115, and the different valve ports can be communicated. With the movement of the main valve block 112, the positions of the first chamber 113, the second chamber 114 and the third chamber 115 are changed, so that the first chamber 113, the second chamber 114 and the third chamber 115 are utilized to form communication between different valve ports, and the flow direction of the refrigerant is changed.

Example III

In this embodiment, a multi-position reversing valve 1 is provided, which is further improved on the basis of the second embodiment.

As shown in fig. 1 to 2, the plurality of valve ports of the main valve body 11 specifically includes two end valve ports 1117 and six side valve ports. Two end valve ports 1117 are provided at both ends of the main valve housing 111, respectively; the six side ports include a first port 1111, a second port 1112, a third port 1113, and a fourth port 1114 provided at one side of the main valve housing 111, and a fifth port 1115 and a sixth port 1116 provided at the other side of the main valve housing 111, and the ports at the same side are sequentially spaced apart. The fifth valve port 1115 and the sixth valve port 1116 are refrigerant inlets 1118 for connecting to the exhaust ports of the double-exhaust compressor, and the second valve port 1112 is for connecting to the return port of the double-exhaust compressor.

The main valve block 112 can be switched among an initial position, a first position and a second position, so that when the main valve block 112 is in different positions, the communication state among the valve ports is different, and the position switching of the main valve block 112 is utilized to change the flow direction of the refrigerant. Wherein, when the main valve block 112 is in the initial position (the state shown in fig. 1 and 2), the first valve port 1111 and the sixth valve port 1116 are both communicated with the second chamber 114, such that communication is formed between the first valve port 1111 and the sixth valve port 1116; both the second valve port 1112 and the third valve port 1113 are in communication with the first chamber 113 such that communication is established between the second valve port 1112 and the third valve port 1113; fourth port 1114 and fifth port 1115 are both in communication with third chamber 115 such that communication is established between fourth port 1114 and fifth port 1115. When the main valve block 112 is moved to the first position (i.e., the main valve block 112 is moved to the right in fig. 2), the first, fifth and sixth ports 1111, 1115, 1116 are in communication through the second chamber 114, and the second, third and fourth ports 1112, 1113, 1114 are in communication through the first chamber 113; when the main valve block 112 is moved to the second position (i.e., the main valve block 112 is moved to the left position in fig. 2), the first and second ports 1111, 1112 are in communication through the first chamber 113, the third and sixth ports 1113, 1116 are in communication through the second chamber 114, and the fourth and fifth ports 1114, 1115 are in communication through the third chamber 115.

Example IV

In this embodiment, a multi-position reversing valve 1 is provided, which is further improved on the basis of the third embodiment.

As shown in fig. 1 to 3, the pilot valve 12 specifically includes a pilot valve housing 121, a pilot valve block 122, and an electromagnetic controller 123. The pilot valve housing 121 has communication ports on both sides, and is connected to the valve port of the main valve body 11 via connection pipes. The pilot valve block 122 is provided in the pilot valve housing 121 and is movable relative to the pilot valve housing 121, and when the pilot valve block 122 is moved to different positions, different communication ports are communicated, thereby controlling the main valve body 11. The pilot valve block 122 has a groove structure, an opening of the groove structure faces one side of the pilot valve housing 121, and surrounds a side wall of the pilot valve housing 121 to form a fourth chamber 1221, and along with movement of the pilot valve block 122, a position of the fourth chamber 1221 is changed. The solenoid controller 123 may control the movement of the pilot valve block 122 using electromagnetic action. Specifically, an electromagnetic controller 123 may be provided at both ends of the pilot valve housing 121, respectively, wherein both ends of the pilot valve block 122 are connected with the pilot valve housing 121 through springs, respectively, so that when the electromagnetic controller 123 is powered off, the pilot valve block 122 can be reset by using the elastic force of the springs.

Further, the number of communication ports is four, including a first communication port 1211, a second communication port 1212, a third communication port 1213, and a fourth communication port 1214, which are respectively provided at both sides of the pilot valve housing 121. Specifically, the first communication port 1211 is provided on the side of the pilot valve housing 121 remote from the fourth chamber 1221, and the second communication port 1212, the third communication port 1213, and the fourth communication port 1214 are provided near the side of the fourth chamber 1221, and are sequentially spaced apart. Wherein, the first communication port 1211 communicates with the sixth valve port 1116 of the main valve body 11 through a connection pipe, so that the refrigerant discharged from the exhaust port of the double-exhaust compressor can flow into the pilot valve 12; the second communication port 1212 and the fourth communication port 1214 are respectively connected with two end valve ports 1117 of the main valve body 11 through connection pipes, namely, the second communication port 1212 is connected with the end valve port 1117 positioned at the left end of the main valve housing 111, and the fourth communication port 1214 is connected with the end valve port 1117 positioned at the end of the main valve housing 111, so that the refrigerant in the pilot valve 12 can flow into any one end of the main valve body 11 to drive the main valve block 112 to move; the third communication port 1213 communicates with the second valve port 1112 of the main valve body 11 through a connection pipe so that the third communication port 1213 can communicate with a return air port of the double-exhaust compressor to achieve return flow of the refrigerant.

The pilot valve block 122 can be switched among an initial position, a third position and a fourth position, so that the communication state between different communication ports is changed, and the movement of the main valve block 112 of the main valve body 11 is controlled, so that the control of the refrigerant flow direction is realized. When the pilot valve block 122 is in the initial position (the state shown in fig. 1 and 3), the second communication port 1212 and the fourth communication port 1214 are located outside the fourth chamber 1221, and the third communication port 1213 is located inside the fourth chamber 1221, at this time, the first communication port 1211 communicates with the second communication port 1212 and the fourth communication port 1214, and pressure is generated to both ends of the main valve body 11, so that the main valve block 112 of the main valve body 11 is also in the initial position.

When the pilot valve block 122 moves to the third position (the state shown in fig. 4), that is, the pilot valve block 122 moves to the right position, so that the first communication port 1211 is communicated with the second communication port 1212, and the third communication port 1214 is communicated with the fourth communication port 1214, at this time, the pressure at the left end of the main valve body 11 increases, and drives the main valve block 112 to move to the first position, that is, the main valve block 112 moves to the right position, and the original refrigerant at the right end of the main valve body 11 can flow to the second valve port 1112 through the fourth chamber 1221 and flow back to the return air port of the double-exhaust compressor. At this time, the first valve port 1111 of the main valve body 11 communicates with the fifth valve port 1115 and the sixth valve port 1116, the second valve port 1112 communicates with the third valve port 1113 and the fourth valve port 1114, and if such a communication state is achieved by using the existing four-way valve, a combination of two four-way valves as shown in fig. 5 is required, which increases the difficulty of connection and complexity of the air conditioning system, and is inconvenient to control.

When the pilot valve block 122 moves to the fourth position (the state shown in fig. 6), that is, the pilot valve block 122 moves to the left position, so that the first communication port 1211 is communicated with the fourth communication port 1214, and the second communication port 1212 is communicated with the third communication port 1213, at this time, the end pressure of the main valve body 11 increases, and the main valve block 112 is driven to move to the second position, that is, the main valve block 112 moves to the left position, and the original refrigerant at the left end of the main valve body 11 can flow to the second valve port 1112 through the fourth chamber 1221 and flow back to the return air port of the double-exhaust compressor. At this time, the first valve port 1111 of the main valve body 11 communicates with the second valve port 1112, the third valve port 1113 communicates with the sixth valve port 1116, the fourth valve port 1114 communicates with the fifth valve port 1115, and if such a communication state is achieved by using the existing four-way valve, a combination of two four-way valves as shown in fig. 7 is required, which increases the difficulty of connection and complexity of the air conditioning system, and is inconvenient to control.

The following provides a specific embodiment of the multi-position reversing valve 1 described above:

as shown in fig. 1 to 3, the multi-position directional valve 1 includes a main valve body 11 and a pilot valve 12. Wherein the main valve body 11 is used for communicating with a double-exhaust compressor and other devices in an air conditioning system, and the pilot valve 12 is used for controlling the main valve body 11.

The main valve body 11 includes a main valve housing 111 and a main valve block 112 provided in the main valve housing 111, the main valve block 112 being movable in the main valve housing 111. The main valve block 112 specifically includes a valve block body 1121, a first sealing structure 1123, and a second sealing structure 1124. End plates 1122 are arranged at two ends of the valve block body 1121, and each end plate 1122 is connected with the opposite end of the main valve shell 111 through a spring so that the valve block body 1121 can be reset; each end plate 1122 abuts an inner side wall of the main valve housing 111 to effect a seal. The first and second sealing structures 1123, 1124 are disposed between the two end plates 1122 of the valve block body 1121 and are each connected to the valve block body 1121 for movement with the valve block body 1121.

The first sealing structure 1123 is a groove structure, and the opening of the groove structure faces one side of the main valve housing 111, and the first sealing structure 1123 abuts against the inner sidewall of one side of the main valve housing 111 and forms a first chamber 113. The second sealing structure 1124 is spaced apart from the first sealing structure 1123 in the direction of movement of the valve block body 1121, i.e., the second sealing structure 1124 is located between the first sealing structure 1123 and one of the end plates 1122 of the valve block body 1121, and the second sealing structure 1124 abuts against the inner sidewall of the main valve housing 111. The space is divided into two isolated spaces by the first sealing structure 1123, the second sealing structure 1124, the two end plates 1122 and the side wall of the main valve housing 111, specifically, the first sealing structure 1123, the second sealing structure 1124, one of the end plates 1122 and the side wall of the main valve housing 111 surround to form the second chamber 114, the second sealing structure 1124 surrounds to the other end plate 1122 and the side wall of the main valve housing 11 to form the third chamber 115, that is, the space between the second sealing structure 1124 and the first sealing structure 1123 forms the second chamber 114, the second chamber 114 is located at one side of the second sealing structure 1124 close to the first sealing structure 1123, and the third chamber 115 is formed between the second sealing structure 1124 and the corresponding end plate 1122, that is, the third chamber 115 is located at one side of the second sealing structure 1124 far from the first sealing structure 1123.

The main valve housing 111 is provided with a plurality of ports, specifically including two end ports 1117 and six side ports. Two end valve ports 1117 are provided at both ends of the main valve housing 111, respectively; the six side ports include a first port 1111, a second port 1112, a third port 1113, and a fourth port 1114 provided at one side of the main valve housing 111, and a fifth port 1115 and a sixth port 1116 provided at the other side of the main valve housing 111, and the ports at the same side are sequentially spaced apart. The fifth valve port 1115 and the sixth valve port 1116 are refrigerant inlets 1118 for connecting to the exhaust ports of the double-exhaust compressor, and the second valve port 1112 is for connecting to the return port of the double-exhaust compressor.

The main valve block 112 can be switched among an initial position, a first position and a second position, so that when the main valve block 112 is in different positions, the communication state among the valve ports is different, and the position switching of the main valve block 112 is utilized to change the flow direction of the refrigerant. Wherein, when the main valve block 112 is in the initial position (the state shown in fig. 1 and 2), the first valve port 1111 and the sixth valve port 1116 are both communicated with the second chamber 114, such that communication is formed between the first valve port 1111 and the sixth valve port 1116; both the second valve port 1112 and the third valve port 1113 are in communication with the first chamber 113 such that communication is established between the second valve port 1112 and the third valve port 1113; fourth port 1114 and fifth port 1115 are both in communication with third chamber 115 such that communication is established between fourth port 1114 and fifth port 1115.

The pilot valve 12 specifically includes a pilot valve housing 121, a pilot valve block 122, and an electromagnetic controller 123. The pilot valve block 122 is provided in the pilot valve housing 121 and is movable with respect to the pilot valve housing 121. The pilot valve block 122 has a groove structure, an opening of the groove structure faces one side of the pilot valve housing 121, and surrounds a side wall of the pilot valve housing 121 to form a fourth chamber 1221, and along with movement of the pilot valve block 122, a position of the fourth chamber 1221 is changed. The both ends of the pilot valve housing 121 are respectively provided with an electromagnetic controller 123 to control the movement of the pilot valve block 122 by electromagnetic action. Wherein, the both ends of pilot valve block 122 are connected with pilot valve housing 121 through the spring respectively to when electromagnetic controller 123 outage, pilot valve block 122 can utilize the elasticity effect of spring to realize the reset.

The pilot valve housing 121 is provided with four communication ports, including a first communication port 1211, a second communication port 1212, a third communication port 1213, and a fourth communication port 1214, which are provided on both sides of the pilot valve housing 121, respectively. Specifically, the first communication port 1211 is provided on the side of the pilot valve housing 121 remote from the fourth chamber 1221, and the second communication port 1212, the third communication port 1213, and the fourth communication port 1214 are provided near the side of the fourth chamber 1221, and are sequentially spaced apart. Wherein the first communication port 1211 communicates with the sixth valve port 1116 of the main valve body 11 through a connection pipe; the second communication port 1212 and the fourth communication port 1214 are respectively connected with two end valve ports 1117 of the main valve body 11 through connection pipes, namely, the second communication port 1212 is connected with the end valve port 1117 positioned at the left end of the main valve housing 111, and the fourth communication port 1214 is connected with the end valve port 1117 positioned at the end of the main valve housing 111; the third communication port 1213 communicates with the second valve port 1112 of the main valve body 11 through a connection pipe.

When the pilot valve block 122 moves to the third position (the state shown in fig. 4), that is, the pilot valve block 122 moves to the right position, so that the first communication port 1211 is communicated with the second communication port 1212, the third communication port 1213 is communicated with the fourth communication port 1214, at this time, the pressure at the left end of the main valve body 11 increases, and drives the main valve block 112 to move to the first position, that is, the main valve block 112 moves to the right position, and the original refrigerant at the right end of the main valve body 11 can flow to the second valve port 1112 through the fourth chamber 1221 and flow back to the return air port of the double-exhaust compressor. At this time, the first valve port 1111 of the main valve body 11 communicates with the fifth and sixth valve ports 1115 and 1116, and the second valve port 1112 communicates with the third and fourth valve ports 1113 and 1114.

When the pilot valve block 122 moves to the fourth position (the state shown in fig. 6), that is, the pilot valve block 122 moves to the left position, so that the first communication port 1211 is communicated with the fourth communication port 1214, and the second communication port 1212 is communicated with the third communication port 1213, at this time, the end pressure of the main valve body 11 increases, and the main valve block 112 is driven to move to the second position, that is, the main valve block 112 moves to the left position, and the original refrigerant at the left end of the main valve body 11 can flow to the second valve port 1112 through the fourth chamber 1221 and flow back to the return air port of the double-exhaust compressor. At this time, the first port 1111 of the main valve body 11 communicates with the second port 1112, the third port 1113 communicates with the sixth port 1116, and the fourth port 1114 communicates with the fifth port 1115.

The multi-position reversing valve 1 in the embodiment can change the communication state of the valve port of the main valve body 11 by utilizing the refrigerant flow between the pilot valve 12 and the main valve body 11, so as to realize the refrigerant flow direction of an air conditioning system, reduce the number of reversing valves in the air conditioning system, reduce the complexity and control difficulty of the air conditioning system, be beneficial to reducing the cost, realize the non-stop defrosting of an indoor unit, effectively improve the heating effect in the defrosting process and be beneficial to improving the use experience of users, especially when being applied to the air conditioning system comprising double exhaust compressors.

Example five

In this embodiment, there is provided an air conditioning system 2, and as shown in fig. 1 and 8, the air conditioning system 2 includes a double exhaust gas compressor 21, the multi-position reversing valve 1 in any of the above embodiments, an outdoor heat exchanger 22, and an indoor heat exchanger assembly 23.

Two valve ports serving as refrigerant inlets 1118 in the multi-position reversing valve 1 are connected with two exhaust ports of the double-exhaust compressor 21 through pipelines, and the other valve port of the multi-position reversing valve 1 is connected with an air return port 213 of the double-exhaust compressor 21 through a pipeline. The outdoor heat exchanger 22 and the indoor heat exchanger assembly 23 are respectively connected with the multi-position reversing valve 1 through pipelines, and form a refrigerant loop, so that the communication state between the exhaust port and the return port 213 of the double exhaust compressor 21 and the outdoor heat exchanger 22 and the indoor heat exchanger assembly 23 is controlled through the multi-position reversing valve 1, and the refrigerant flow direction in the air conditioning system 2 is changed, so that the air conditioning system 2 realizes different working modes, such as a refrigerating mode, a heating mode, a defrosting mode and the like. Wherein, a throttling component is arranged between the outdoor heat exchanger 22 and the indoor heat exchanger assembly 23 and used for throttling the refrigerant.

In the air conditioning system 2 in this embodiment, only one multi-position reversing valve 1 is needed to realize multiple working modes of the whole air conditioning system 2, so that the complexity and control difficulty of the air conditioning system 2 are reduced, and the cost is reduced.

In addition, the air conditioning system 2 in this embodiment further has all the advantages of the multi-position reversing valve 1 in any of the above embodiments, and will not be described herein.

Example six

The present embodiment provides an air conditioning system 2, which is further improved on the basis of the fifth embodiment.

As shown in fig. 1, 2 and 8, the indoor heat exchanger assembly 23 specifically includes an overwind cavity 231, a first indoor heat exchanger 232, a second indoor heat exchanger 233 and a wind shielding structure 234. The first indoor heat exchanger 232 and the second indoor heat exchanger 233 are both arranged in the air passing cavity 231; the air passing chamber 231 can guide the air flow therethrough to promote the heat exchange of the first and second indoor heat exchangers 232 and 233 with the outside. The wind shielding structure 234 is disposed between the first indoor heat exchanger 232 and the second indoor heat exchanger 233, and can perform a turnover motion, and the wind shielding structure 234 can open or shield the second indoor heat exchanger 233 according to a use requirement, so as to control an airflow flowing to the second indoor heat exchanger 233.

Further, fig. 8 shows an arrangement of the first indoor heat exchanger 232 and the second indoor heat exchanger 233. The second indoor heat exchanger 233 is located on the lee side of the first indoor heat exchanger 232, and the influence on the air flow flowing into the first indoor heat exchanger 232 can be reduced. The cross-sectional area of the second indoor heat exchanger 233 is smaller than that of the first indoor heat exchanger 232 to reserve space for the wind shielding structure 234, and when the wind shielding structure 234 is in an open state (i.e., a state in which the second indoor heat exchanger 233 is not shielded), the wind shielding structure 234 does not interfere with the wind passing cavity 231. The arrangement mode is simpler, the volume of the wind passing cavity 231 is not required to be increased, and the space utilization rate is improved. Of course, the first indoor heat exchanger 232 and the second indoor heat exchanger 233 are not limited to the arrangement shown in fig. 8, and the shape of the ventilation chamber 231 may be changed, for example, the ventilation chamber 231 may be configured in a Y-type structure, and in this case, the first indoor heat exchanger 232 and the second indoor heat exchanger 233 having the same cross-sectional area may be used, or the respective functions may be realized.

Further, six ports are provided on both sides of the main valve body 11 of the multi-position reversing valve 1, namely, a first port 1111, a second port 1112, a third port 1113, a fourth port 1114, a fifth port 1115 and a sixth port 1116, the fifth port 1115 and the sixth port 1116 being located on one side of the main valve body 11, and the first port 1111, the second port 1112, the third port 1113 and the fourth port 1114 being located on the other side of the main valve body 11; a main valve block 112 is provided in the main valve body 11, and the communication state between the valve ports can be changed by the movement of the main valve block 112. Wherein, the left refrigerant inlet 1118 of the fifth valve port 1115 and the sixth valve port 1116 are respectively connected with two exhaust ports of the double-exhaust compressor 21 through pipelines, the sixth valve port 1116 is connected with the first exhaust port 211, the fifth valve port 1115 is connected with the second exhaust port 212, and the second valve port 1112 is connected with the second valve port 1112 of the double-exhaust compressor 21 through pipelines; the first valve port 1111 is connected to the outdoor heat exchanger 22, the third valve port 1113 is connected to the second indoor heat exchanger 233, and the fourth valve port 1114 is connected to the first indoor heat exchanger 232. In addition, the outdoor heat exchanger 22 is connected to the first indoor heat exchanger 232 and the second indoor heat exchanger 233, respectively, through pipes, and a first throttling part 241, a second throttling part 242, and a third throttling part 243 are provided in the pipes, and throttled operations are performed on the refrigerant flowing through the outdoor heat exchanger 22, the first indoor heat exchanger 232, and the second indoor heat exchanger 233, respectively.

In one embodiment of the air conditioning system 2 described above, the air conditioning system 2 is in a cooling mode as shown in fig. 2-4 and 8.

In the multi-position directional valve 1, the pilot valve block 122 of the pilot valve 12 moves to the right position under the action of the electromagnetic controller 123 and pressure, so that the pressure at the left end of the main valve body 11 increases, and the main valve block 112 is driven to move to the right position. At this time, the first valve port 1111 of the main valve body 11 communicates with the fifth and sixth valve ports 1115 and 1116, and the second valve port 1112 communicates with the third and fourth valve ports 1113 and 1114. The high-temperature and high-pressure refrigerant discharged from the first and second exhaust ports 211 and 212 of the double-exhaust compressor 21 flows into the main valve body 11 of the multi-position reversing valve 1 through the sixth and fifth valve ports 1116 and 1115, respectively, flows into the outdoor heat exchanger 22 through the first valve port 1111, condenses the heat-released refrigerant, throttles the heat-released refrigerant, and flows into the first and second indoor heat exchangers 232 and 233, respectively, in the indoor heat exchanger unit 23, and performs evaporation and heat absorption. At this time, the wind shielding structure 234 is in an open state, that is, the wind shielding structure 234 does not shield the second indoor heat exchanger 233, the air flow generated by the indoor fan 34 sequentially passes through the first indoor heat exchanger 232 and the second indoor heat exchanger 233 to promote heat exchange, the cooling effect is achieved by sending cold air outwards, the refrigerant which completes evaporation and heat absorption flows into the main valve body 11 of the multi-position reversing valve 1 through the third valve opening 1113 and the fourth valve opening 1114, and then flows back into the double-exhaust compressor 21 through the second valve opening 1112 and the air return opening 213 of the double-exhaust compressor 21, so as to complete a refrigeration cycle.

In one embodiment of the air conditioning system 2 described above, the air conditioning system 2 is in a heating mode as shown in fig. 2, 3, 6 and 9.

In the multi-position directional valve 1, the pilot valve block 122 of the pilot valve 12 moves to the left position under the action of the electromagnetic controller 123 and pressure, so that the pressure at the right end of the main valve body 11 increases, and the main valve block 112 is driven to move to the left position. At this time, the first port 1111 of the main valve body 11 communicates with the second port 1112, the third port 1113 communicates with the sixth port 1116, and the fourth port 1114 communicates with the fifth port 1115. The high-temperature and high-pressure refrigerant discharged from the first and second discharge ports 211 and 212 of the double discharge compressor 21 flows into the main valve body 11 of the multi-position reversing valve 1 through the sixth and fifth valve ports 1116 and 1115, respectively, and flows into the first and second indoor heat exchangers 232 and 233 through the fourth and third valve ports 1114 and 1113, respectively, and the refrigerant condenses and releases heat in the first and second indoor heat exchangers 232 and 233. At this time, the wind shielding structure 234 is in an open state, that is, the wind shielding structure 234 does not shield the second indoor heat exchanger 233, and the air flow generated by the indoor fan 34 sequentially passes through the first indoor heat exchanger 232 and the second indoor heat exchanger 233, so as to promote heat exchange, and achieve a heating effect by sending hot air outwards. After the refrigerant with heat release by condensation is throttled, the refrigerant flows into the outdoor heat exchanger 22, and evaporates and absorbs heat, the refrigerant with heat release by evaporation flows into the main valve body 11 of the multi-position reversing valve 1 through the first valve port 1111, and then flows back into the double-exhaust compressor 21 through the second valve port 1112 and the air return port 213 of the double-exhaust compressor 21, and one heating cycle is completed.

In one embodiment of the air conditioning system 2 described above, the air conditioning system 2 is in defrost mode as shown in fig. 2, 3, 10 and 11.

In the multi-position directional valve 1, the electromagnetic controller 123 of the pilot valve 12 is in the de-energized state, the pilot valve block 122 is in the neutral position (i.e., the initial position of the pilot valve block 122), so that the pressures at the left and right ends of the main valve body 11 are the same, and the main valve block 112 is kept in the neutral position (i.e., the initial position of the main valve block 112). At this time, the first valve port 1111 of the main valve body 11 communicates with the sixth valve port 1116, the second valve port 1112 communicates with the third valve port 1113, and the fourth valve port 1114 communicates with the fifth valve port 1115. The high-temperature and high-pressure refrigerant discharged from the first discharge port 211 of the double discharge compressor 21 flows into the main valve body 11 of the multi-position reversing valve 1 through the sixth valve port 1116, and flows into the outdoor heat exchanger 22 through the first valve port 1111; meanwhile, the high-temperature and high-pressure refrigerant discharged from the second exhaust port 212 of the double-row compressor 21 flows into the main valve body 11 of the multi-position reversing valve 1 through the fifth valve port 1115 and flows into the first indoor heat exchanger 232 through the fourth valve port 1114. The high-temperature and high-pressure refrigerant in the outdoor heat exchanger 22 is condensed and released, so that the temperature of the fins of the heat exchanger is increased, the defrosting function is realized, and the condensed refrigerant flows into the second indoor heat exchanger 233 after being throttled; the high-temperature and high-pressure refrigerant in the first indoor heat exchanger 232 is condensed to release heat, and hot air is sent outwards under the action of the indoor fan 34, so that a heating function is realized, and the condensed refrigerant flows into the second indoor heat exchanger 233 after being throttled. At this time, the wind shielding structure 234 is in a closed state, i.e., the wind shielding structure 234 shields the second indoor heat exchanger 233. The refrigerant evaporates and absorbs heat in the second indoor heat exchanger 233, and then flows into the main valve body 11 of the multi-position reversing valve 1 through the third valve opening 1113, and then flows back into the double-exhaust compressor 21 through the second valve opening 1112 and the air return opening 213 of the double-exhaust compressor 21, thereby completing one defrosting cycle.

If the existing four-way valve is used to realize the communication state in this embodiment, a combination of two four-way valves as shown in fig. 12 is required, and one of the four-way valves needs to be provided with a corresponding control valve in the connecting pipeline, which further increases the connection difficulty and the complexity of the air conditioning system 2, and is inconvenient to control.

In this embodiment, the first indoor heat exchanger 232 is used as a condenser to release heat, and the second indoor heat exchanger 233 is used as an evaporator to absorb heat, so that heating can be performed simultaneously in the defrosting process, and defrosting without stopping is realized. Because the second indoor heat exchanger 233 is shielded, the air flow of the indoor fan 34 does not pass through the second indoor heat exchanger 233, and the outward cold air delivery can be reduced, so that the sectional heating is realized, and the heating effect of the air conditioning system 2 in the defrosting mode can be effectively improved.

It should be noted that the operation mode of the air conditioning system 2 is not limited to the several modes in the above embodiments, and other operation modes, such as a dehumidification mode, may be implemented.

Example seven

In this embodiment, as shown in fig. 1 and 8, an air conditioner 3 is provided, and the air conditioner 3 includes the air conditioning system 2, the outdoor unit casing 31, the indoor unit casing 33, the outdoor fan 32, and the indoor fan 34 in any of the above embodiments. Wherein, the double-row compressor 21, the multi-position reversing valve 1, the outdoor heat exchanger 22 and the outdoor fan 32 in the air conditioning system 2 are arranged in the outdoor unit shell 31, thereby forming an outdoor unit of the air conditioner 3; the indoor heat exchanger assembly 23 and the indoor fan 34 in the air conditioning system 2 are provided in the indoor unit casing 33, thereby forming an indoor unit of the air conditioner 3. The integrated indoor unit and the integrated outdoor unit are formed, so that the transportation and the installation are convenient.

In addition, the air conditioner 3 in this embodiment has all the advantages of the air conditioning system 2 in any of the above embodiments, and will not be described herein.

In one embodiment of the application, a multi-position reversing valve is provided, which comprises a main valve body, a pilot valve and connecting pipelines thereof, wherein the pilot valve consists of a pilot valve sliding block, a pilot valve shell, four connecting pipes, springs at two sides of the valve body and corresponding electromagnetic control devices. The main valve body consists of a main valve block, springs at two sides and six main connecting channels, wherein two channels in the main connecting channels and sealing ends at the springs of the valve body are connected with four connecting pipes of the pilot valve.

In one embodiment of the application, a double-exhaust heat pump system using a multi-position reversing valve is provided, and the double-exhaust heat pump system comprises a double-exhaust compressor, the multi-position reversing valve, an outdoor heat exchanger, a throttling device and an indoor heat exchanger, wherein the indoor heat exchanger is formed by arranging two heat exchangers in an air duct side by side, and the air duct is provided with an air valve for controlling an air opening. The double-exhaust heat pump system is not only suitable for the household air conditioner heat pump system, but also suitable for the automobile heat pump system. The double exhaust heat pump system has the following working modes:

1. and (3) a refrigeration mode. The two exhaust ports of the compressor are connected with the outdoor heat exchangers through the multi-position reversing valve, the air enters the two indoor heat exchangers after being condensed by the outdoor heat exchangers and being throttled by the first throttling component, and the outlet of the indoor heat exchanger is connected with the air suction ports of the double-exhaust compressor through the multi-position reversing valve. The air valve is positioned on the right side, and the air sequentially passes through the two heat exchangers to realize the refrigeration function. The function can be realized through two four-way reversing valves and a plurality of valve groups, but the application can be realized through one multi-position reversing valve, thereby simplifying the pipeline connection.

The specific implementation mode is as follows: the sixth connecting pipe is communicated with the exhaust port of the compressor and is in a high-pressure state, the second connecting pipe is communicated with the air suction port of the compressor and is in a low-pressure state, electromagnetic control on the left side of the pilot valve is in a repulsive state, the right side of the pilot valve is in an attractive state, the sliding block of the pilot valve moves rightwards under the action of pressure difference and driving force, the sixth connecting pipe is communicated with the sealing end of the left spring of the main valve body, the second connecting pipe is communicated with the sealing end of the right spring of the main valve body, pressure difference is formed on the main valve, and the valve block of the main valve body is pushed to move rightwards, so that the functions of the two four-way reversing valves are realized. At this time, the sixth connecting pipe and the fifth connecting pipe are communicated with the first connecting pipe, and the second connecting pipe, the third connecting pipe and the fourth connecting pipe are communicated.

2. Heating mode. The two exhaust ports of the compressor are connected with the indoor heat exchanger through the multi-position reversing valve, and the air enters the outdoor heat exchanger after being throttled by the second throttling component and the third throttling component after being subjected to heat exchange by the indoor heat exchanger, and the outlet of the outdoor heat exchanger is connected with the air suction ports of the double-exhaust compressor through the multi-position reversing valve. The air valve is positioned on the right side, and the air sequentially passes through the two heat exchangers to realize the heating function. Because the pressure of the two exhaust gases is different, namely the condensation temperature of the indoor heat exchanger is different, the condensation temperature of the windward side is lower, and the condensation pressure of the leeward side is higher, the gradient heating of wind is realized, and the compression power consumption of the system is reduced.

The specific implementation mode is as follows: the sixth connecting pipe is communicated with the compressor exhaust port and is in a high-pressure state, the second connecting pipe is communicated with the compressor air suction port and is in a low-pressure state, at the moment, the electromagnetic control on the left side of the pilot valve is in an attraction state, and the electromagnetic control on the right side of the pilot valve is in a rejection state, so that the pilot valve is pushed to move left. The sixth connecting pipe is communicated with the right side spring sealing end of the main valve body, and the second connecting pipe is communicated with the left side spring sealing end of the main valve body, so that pressure difference is formed on the main valve, and the valve block of the main valve body is pushed to move leftwards, so that the functions of the two four-way reversing valves are realized. At this time, the sixth connecting pipe is communicated with the third connecting pipe, the fifth connecting pipe is communicated with the fourth connecting pipe, and the second connecting pipe is communicated with the first connecting pipe.

3. And (3) defrosting mode. Two exhaust ports of the compressor are connected with one of the outdoor heat exchanger and the indoor heat exchanger through a multi-position reversing valve, the refrigerant subjected to heat exchange through the outdoor heat exchanger is throttled through a first throttling part, the refrigerant subjected to heat exchange through the indoor heat exchanger is throttled through a second throttling part, and the refrigerant are converged and then flow through the indoor heat exchanger and then return to the air suction port of the double-exhaust compressor through the multi-position reversing valve. The air valve is positioned at the left side, and air only passes through the indoor high-temperature heat exchanger, so that defrosting without stopping is realized. The initial mode can also be realized by changing the direction of the wind and changing the air valve to the right side.

The specific implementation mode is as follows: the sixth connecting pipe is communicated with the exhaust port of the compressor and is in a high-pressure state, the second connecting pipe is communicated with the air suction port of the compressor and is in a low-pressure state, electromagnetic control on the left side and the right side of the pilot valve is in a closed state, and the pilot valve is in an intermediate balance state. The sixth connecting pipe is communicated with the left side spring sealing end and the right side spring sealing end of the main valve body, and the main valve body is also in a middle balance state, so that the functions of the two four-way reversing valves are realized. At this time, the sixth connecting pipe is communicated with the first connecting pipe, the fifth connecting pipe is communicated with the fourth connecting pipe, and the second connecting pipe is communicated with the third connecting pipe.

The technical schemes according to some embodiments of the present application are described in detail above with reference to the accompanying drawings, and by changing the communication state of the valve ports, the refrigerant flow direction of the air conditioning system can be realized, the number of reversing valves in the air conditioning system is reduced, the complexity and control difficulty of the air conditioning system are reduced, the cost is reduced, and particularly when the air conditioning system is applied to an air conditioning system comprising double exhaust compressors, the indoor unit can be realized without stopping defrosting, the heating effect in the defrosting process can be effectively improved, and the use experience of users is improved.

In embodiments according to the application, the terms "first," "second," "third," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments according to the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments according to the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the technical solution of the present application.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example according to the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment according to the present application, and is not intended to limit the technical solution of the present application, and various modifications and variations can be made to the technical solution of the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the technical solution of the present application should be included in the protection scope of the present application.

Claims

1. A multi-position reversing valve for an air conditioning system including a dual discharge compressor, comprising:

the main valve body is provided with a plurality of valve ports, and at least part of the valve ports are communicated with each other;

The pilot valve is communicated with the main valve body through a connecting pipe and can change the communication state among a plurality of valve ports;

at least two valve ports are refrigerant inlets and are used for being connected with exhaust ports of the double-exhaust compressor;

the main valve body includes:

a main valve housing;

a main valve block disposed in the main valve housing;

the main valve block includes:

the valve block comprises a valve block body, wherein end plates are respectively arranged at two ends of the valve block body;

the first sealing structure is arranged between the two end plates and connected with the valve block body, is of a groove-shaped structure and surrounds the side wall of one side of the main valve shell to form a first cavity;

the second sealing structure is connected to the valve block body and positioned between the two end plates, and the second sealing structure and the first sealing structure are arranged at intervals;

the two sides of the main valve shell are respectively provided with the valve port, the first sealing structure, the second sealing structure, one end plate and the side wall of the main valve shell are surrounded to form a second cavity, the second sealing structure, the other end plate and the side wall of the main valve shell are surrounded to form a third cavity, and the second cavity and the third cavity are isolated from each other;

The plurality of valve ports includes:

two end valve openings are respectively arranged at two ends of the main valve shell;

the first valve port, the second valve port, the third valve port and the fourth valve port are arranged on one side of the main valve shell, the fifth valve port and the sixth valve port are the refrigerant inlets and are arranged on the other side of the main valve shell, when the main valve block is in an initial position, the first valve port and the sixth valve port are communicated through the second chamber, the second valve port and the third valve port are communicated through the first chamber, and the fourth valve port and the fifth valve port are communicated through the third chamber;

the main valve block moves to a first position, the first valve port, the fifth valve port and the sixth valve port are communicated through the second chamber, and the second valve port, the third valve port and the fourth valve port are communicated through the first chamber; the main valve block moves to a second position, the first valve port and the second valve port are communicated through the first chamber, the third valve port and the sixth valve port are communicated through the second chamber, and the fourth valve port and the fifth valve port are communicated through the third chamber.

2. The multi-position reversing valve of claim 1, wherein,

The valve ports are arranged on the main valve shell, and the pilot valve can drive the main valve block to move in the main valve shell so as to change the communication state among the valve ports.

3. The multi-position reversing valve of claim 1, wherein,

the end plate is propped against the inner side wall of the main valve shell and is connected with the opposite end of the main valve shell through a spring.

4. The multi-position reversing valve of claim 1, wherein the pilot valve comprises:

the pilot valve comprises a pilot valve shell, wherein two sides of the pilot valve shell are respectively provided with a communication port;

the pilot valve block is arranged in the pilot valve shell, two ends of the pilot valve block are respectively connected with two ends of the pilot valve shell through springs, and the pilot valve block is of a groove-shaped structure and surrounds the side wall of one side of the pilot valve shell to form a fourth cavity;

and the electromagnetic controller is used for driving the pilot valve block to move.

5. The multi-position reversing valve of claim 4, wherein,

a first communication port is formed in one side, far away from the fourth cavity, of the pilot valve housing, and the first communication port is communicated with the sixth valve port through a connecting pipe;

A second communication port, a third communication port and a fourth communication port are formed in one side, close to the fourth chamber, of the pilot valve shell, the second communication port and the fourth communication port are communicated with two end valve ports of the main valve body through connecting pipes, and the third communication port is communicated with the second valve port through connecting pipes;

when the pilot valve block is positioned at the initial position, the second communication port and the fourth communication port are positioned outside the fourth cavity, and the third communication port is positioned in the fourth cavity; the pilot valve block moves to a third position, the first communication port is communicated with the second communication port, the third communication port is communicated with the fourth communication port, and the main valve block is driven to move to the first position; the pilot valve block moves to a fourth position, the first communication port is communicated with the fourth communication port, the second communication port is communicated with the third communication port, and the main valve block is driven to move to a second position.

6. An air conditioning system, comprising:

a double exhaust gas compressor;

the multi-position reversing valve according to any one of claims 1 to 5, wherein two refrigerant inlets of a main valve body of the multi-position reversing valve are connected with two exhaust ports of the double-exhaust compressor through pipelines, and one valve port of the main valve body is connected with a return air port of the double-exhaust compressor;

The outdoor heat exchanger and the indoor heat exchanger component are respectively connected with different valve ports on the multi-position reversing valve through pipelines, and form a loop;

and a throttling component is arranged in a pipeline between the outdoor heat exchanger and the indoor heat exchanger component.

7. The air conditioning system of claim 6, wherein the indoor heat exchanger assembly comprises:

a wind passing cavity;

the first indoor heat exchanger and the second indoor heat exchanger are arranged in the air passing cavity and are arranged at intervals along the extending direction of the air passing cavity;

the wind shielding structure is movably arranged between the first indoor heat exchanger and the second indoor heat exchanger and can shield airflow flowing to the second indoor heat exchanger.

8. An air conditioning system according to claim 7, wherein,

the second indoor heat exchanger is arranged on the lee side of the first indoor heat exchanger, and the cross-sectional area of the second indoor heat exchanger is smaller than that of the first indoor heat exchanger.

9. An air conditioner, comprising:

the air conditioning system of any one of claims 6 to 8;

the double-row air compressor, the multi-position reversing valve and the outdoor heat exchanger of the air conditioning system are arranged in the outdoor unit shell;

The outdoor fan is arranged in the outdoor unit shell and corresponds to the outdoor heat exchanger;

an indoor unit casing, wherein an indoor heat exchanger component of the air conditioning system is arranged in the indoor unit casing;

the indoor fan is arranged in the indoor unit shell and corresponds to the air passing cavity of the indoor heat exchanger component.