CN110094546B - Four-way valve and air conditioning system - Google Patents
Four-way valve and air conditioning system Download PDFInfo
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- CN110094546B CN110094546B CN201810081134.9A CN201810081134A CN110094546B CN 110094546 B CN110094546 B CN 110094546B CN 201810081134 A CN201810081134 A CN 201810081134A CN 110094546 B CN110094546 B CN 110094546B
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- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a four-way valve and an air conditioning system. The four-way valve is used for an air conditioning system and comprises a main valve body (1) and a first pilot valve (2), wherein the main valve body (1) comprises an interface C, an interface D, an interface E and an interface S, the first pilot valve (2) comprises an interface C ', an interface D ', an interface E ' and an interface S ', the interface C ' of the first pilot valve (2) is connected to a first valve core driving end of the main valve body (1) through a first signal pipe (3), the interface E ' of the first pilot valve (2) is connected to a second valve core driving end of the main valve body (1) through a second signal pipe (4), the interface S ' of the first pilot valve (2) is connected with a fourth signal pipe (6), and the other end of the fourth signal pipe (6) is used for being connected to a pipeline between a gas-liquid separator (16) of the air conditioning system and an air suction port of a compressor (14). According to the four-way valve disclosed by the invention, the end part of the valve core driving end of the four-way valve can be effectively prevented from generating liquid accumulation, and the switching efficiency of the four-way valve is ensured.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a four-way valve and an air conditioning system.
Background
The four-way valve is arranged in the heat pump type air conditioning system and used for changing the flow direction of the refrigerant, achieving the purposes of switching between cooling and heating and switching over the four-way valve for defrosting during heating.
The four-way valve generally adjusts the position of the valve element through the pilot valve, the pilot valve has four interfaces, D ', E', C ', and S', the four-way valve has four interfaces, D, E, C, S, wherein interface C 'is connected to the first valve element driving end of the four-way valve through a first signal pipe, interface E' is connected to the second valve element driving end of the four-way valve through a second signal pipe, interface D 'is connected to interface D through a third signal pipe, and interface S' is connected to the port of interface S through a fourth signal pipe.
When the system defrosts, store a large amount of high-pressure liquid refrigerant in the wind side heat exchanger, the defrosting is finished, the cross valve switches, and when the piston moved the barrel interlude, high-pressure liquid refrigerant in the wind side heat exchanger flows back to S pipe, rethread fourth signal pipe, pilot valve, first signal pipe to A chamber through C pipe, makes A chamber hydrops, because of liquid refrigerant incompressible and can not in time discharge, makes the cross valve switching time lengthen, leads to unit low dropout warning shutdown trouble.
Disclosure of Invention
The invention aims to provide a four-way valve and an air conditioning system, which can effectively avoid the occurrence of liquid accumulation at the end part of a valve core driving end of the four-way valve and ensure the switching efficiency of the four-way valve.
In order to solve the above technical problem, as an aspect of the present invention, there is provided a four-way valve for an air conditioning system, including a main valve body and a first pilot valve, the main valve body includes a port C, a port D, a port E and a port S, the first pilot valve includes a port C ', a port D ', a port E ' and a port S ', the port C ' of the first pilot valve is connected to a first valve element driving end of the main valve body through a first signal pipe, the port E ' of the first pilot valve is connected to a second valve element driving end of the main valve body through a second signal pipe, the port S ' of the first pilot valve is connected to a fourth signal pipe, and another end of the fourth signal pipe is used for being connected to a pipeline between a gas-liquid separator of the air conditioning system and a suction port of a compressor.
According to the four-way valve, the interface S' of the first pilot valve is connected to a pipeline between a gas-liquid separator of an air-conditioning system and an air suction port of a compressor, but not connected to the interface S of the main valve body, so that when the main valve body of the four-way valve is switched after defrosting of the air-conditioning system is finished, high-pressure liquid refrigerant in the air-side heat exchanger flows back to the S pipe through the C pipe, cannot flow into the first valve core driving end of the main valve body through the fourth signal pipe, the first pilot valve and the first signal pipe, and flows into the first valve core driving end of the main valve body through the fourth signal pipe, the first pilot valve and the first signal pipe to form gaseous refrigerant after gas-liquid separation through the gas-liquid separator, so that the problem of liquid accumulation at the first valve core driving end is avoided, the liquid accumulation at the valve core driving end of the four-way valve can be effectively avoided, and the switching efficiency of the four-way valve is ensured.
Drawings
Fig. 1 schematically illustrates a structural schematic diagram of an air conditioning system according to an embodiment of the present invention;
fig. 2 schematically illustrates an operation of an air conditioning system according to a first embodiment of the present invention;
fig. 3 schematically shows an operation of an air conditioning system according to a second embodiment of the present invention.
1. A main valve body; 2. a first pilot valve; 3. a first signal tube; 4. a second signal tube; 5. a third signal tube; 6. a fourth signal tube; 7. a fifth signal tube; 8. a sixth signal tube; 9. a seventh signal tube; 10. an eighth signal tube; 11. a second pilot valve; 12. an indoor heat exchanger; 13. an outdoor heat exchanger; 14. a compressor; 15. a throttling device; 16. a gas-liquid separator; 17. a four-way valve; 18. a reservoir; 19. a first check valve; 20. a second one-way valve; 21. a third check valve; 22. a fourth check valve; 23. drying the filter; 24. a throttle valve.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, a four-way valve is used for an air conditioning system, the four-way valve includes a main valve body 1 and a first pilot valve 2, the main valve body 1 includes a port C, a port D, a port E and a port S, the first pilot valve 2 includes a port C ', a port D ', a port E ' and a port S ', the port C ' of the first pilot valve 2 is connected to a first valve spool driving end of the main valve body 1 through a first signal pipe 3, the port E ' of the first pilot valve 2 is connected to a second valve spool driving end of the main valve body 1 through a second signal pipe 4, the port S ' of the first pilot valve 2 is connected to a fourth signal pipe 6, and the other end of the fourth signal pipe 6 is used for being connected to a pipeline between a gas-liquid separator 16 of the air conditioning system and a suction port of a compressor 14.
Since the interface S' of the first pilot valve 2 is connected to a pipe between the gas-liquid separator 16 of the air conditioning system and the suction port of the compressor 14, not to the port S of the main valve body 1, so that when the direction of the main valve body 1 of the four-way valve is switched after the defrosting of the air conditioning system is finished, in the process that the high-pressure liquid refrigerant in the wind side heat exchanger flows back to the S pipe through the C pipe, the high-pressure liquid refrigerant can not flow into the first valve core driving end of the main valve body 1 through the fourth signal pipe 6, the first pilot valve 2 and the first signal pipe 3, and can flow into the first valve core driving end of the main valve body 1 through the fourth signal pipe 6, the first pilot valve 2 and the first signal pipe 3, and the high-pressure liquid refrigerant is a gaseous refrigerant after gas-liquid separation through the gas-liquid separator 16, therefore, the problem of accumulated liquid at the driving end of the first valve core can be avoided, the accumulated liquid at the end part of the driving end of the valve core of the four-way valve can be effectively avoided, and the switching efficiency of the four-way valve is ensured.
Preferably, the interface C, the interface D, the interface E and the interface S are arranged in a cross shape; and/or the interface C ', the interface D', the interface E 'and the interface S' are arranged in a cross shape.
Referring to fig. 2 in combination, according to the first embodiment of the present invention, the first pilot valve 2 is an electromagnetic valve, and the state switching of the main valve body 1 can be controlled by the first pilot valve 2, so that the control is simple and convenient. Because the regulation of first pilot valve 2 is electromagnetic adjustment, consequently can not receive the influence of refrigerant pressure, can improve regulation efficiency.
Referring to fig. 3 in combination, according to a second embodiment of the present invention, the four-way valve further comprises a second pilot valve 11, the second pilot valve 11 being used to control the spool position of the first pilot valve 2.
The second pilot valve 11 is an electromagnetic valve, the first pilot valve 2 is a hydraulic control valve, and the second pilot valve 11 controls the valve element position of the first pilot valve 2, the second pilot valve 11 includes an interface C ", an interface D", an interface E "and an interface S", the interface C "of the second pilot valve 11 is connected to the first valve element driving end of the first pilot valve 2 through a fifth signal pipe 7, the interface E" of the second pilot valve 11 is connected to the second valve element driving end of the first pilot valve 2 through a sixth signal pipe 8, and the interface D "of the second pilot valve 11 is connected to D' of the first pilot valve 2 through a seventh signal pipe 9.
The interface S "of the second pilot valve 11 is connected to the interface S' of the first pilot valve 2 through the eighth signal pipe 10; or, the interface S ″ of the second pilot valve 11 is used to be connected to a pipeline between the gas-liquid separator 16 of the air conditioning system and the suction port of the compressor 14 through the eighth signal pipe 10. When the interface S ″ of the second pilot valve 11 is used for being connected to a pipeline between the gas-liquid separator 16 of the air conditioning system and the suction port of the compressor 14 through the eighth signal pipe 10, since the first pilot valve 11 also adjusts the position of the valve element by using the refrigerant pressure, the phenomenon of liquid accumulation on one side of the valve element driving end of the first pilot valve 11 can be avoided, the problem of switching delay is avoided, and the flexibility and reliability of the reversing adjustment of the first pilot valve 11 are improved.
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, the air conditioning system includes an indoor heat exchanger 12, an outdoor heat exchanger 13, a compressor 14, a throttling device 15, a gas-liquid separator 16, and a four-way valve 17, where the four-way valve 17 is the above-mentioned four-way valve, and one end of a fourth signal pipe 6 of the four-way valve 17 is connected to a port S' of the first pilot valve 2, and the other end is connected to a pipe between the gas-liquid separator 16 and a suction port of the compressor 14.
In this embodiment, the air conditioning system further includes a reservoir 18, a first check valve 19, a second check valve 20, a third check valve 21, and a fourth check valve 22, wherein the first check valve 19 and the third check valve 21 form a first series line, the second check valve 20 and the fourth check valve 22 form a second series line, the first series line and the second series line are connected in parallel, the outdoor heat exchanger 13 is connected between the first check valve 19 and the fourth check valve 22, the indoor heat exchanger 12 is connected between the second check valve 20 and the third check valve 21, an air inlet of the reservoir 18 is connected between the first check valve 19 and the second check valve 20, and a liquid outlet of the reservoir 18 is connected between the third check valve 21 and the fourth check valve 22. The liquid storage device 18 can receive gas, liquid or mixed refrigerant after condensing and heat exchanging from the condenser, then liquid refrigerant is discharged from the liquid outlet of the liquid storage device 18, the liquefying effect of the refrigerant is guaranteed, the refrigerant discharged from the liquid storage device 18 is guaranteed to be pure liquid refrigerant, the energy storage effect of the refrigerant is improved, the heat exchange quantity of the refrigerant is improved, and the refrigerating or heating effect of the refrigerant is improved.
Because of the existence of the four check valves, when the air conditioning system is in a refrigeration state, after the refrigerant flows out of the outdoor heat exchanger 13, the refrigerant enters the liquid reservoir 18 from the air inlet of the liquid reservoir 18 through the first check valve 19, under the pressure action of the refrigerant, the liquid refrigerant in the liquid reservoir 18 flows out of the liquid outlet of the liquid reservoir 18, flows into the indoor heat exchanger 12 through the third check valve 21 to exchange heat, refrigerates indoors, and after the refrigerant exchanging heat with the indoor heat exchanger 12 passes through the interface E and the interface S of the four-way valve, gas-liquid separation is performed in the gas-liquid separator 16, and then the refrigerant flows back to the air suction port of the compressor 14. When the air conditioning system is in a heating state, the refrigerant firstly enters the indoor heat exchanger 12, exchanges heat with the indoor air in the indoor heat exchanger 12 to heat the indoor air, and after flowing out of the indoor heat exchanger 12, the refrigerant enters the liquid reservoir 18 from the air inlet of the liquid reservoir 18 through the second one-way valve 20, under the pressure action of the refrigerant, the liquid refrigerant in the liquid reservoir 18 flows out of the liquid outlet of the liquid reservoir 18, flows into the outdoor heat exchanger 13 through the fourth one-way valve 22 to exchange heat, and after passing through the interface C and the interface S of the four-way valve, the refrigerant exchanging heat with the outdoor heat exchanger 13 is subjected to gas-liquid separation in the gas-liquid separator 16 and then flows back to the air suction port of the compressor 14.
Be provided with drier-filter 23 and solenoid valve on the liquid outlet pipeline of reservoir 18, can carry out the drying and filtering to the liquid refrigerant from reservoir 18 exhaust, avoid the refrigerant to flow the in-process and carry other impurity, guarantee the pure and clean degree of refrigerant, improve the heat exchange efficiency between refrigerant and the heat exchanger.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A four-way valve is used for an air conditioning system and is characterized by comprising a main valve body (1) and a first pilot valve (2), the main valve body (1) comprises a port C, a port D, a port E and a port S, the first pilot valve (2) comprises a port C ', a port D', a port E 'and a port S', the interface C' of the first pilot valve (2) is connected to the first valve core driving end of the main valve body (1) through a first signal pipe (3), the interface E' of the first pilot valve (2) is connected to the second valve core driving end of the main valve body (1) through a second signal pipe (4), the interface S' of the first pilot valve (2) is connected with a fourth signal pipe (6), the other end of the fourth signal pipe (6) is used for being connected to a pipeline between a gas-liquid separator (16) of an air conditioning system and a suction port of a compressor (14).
2. Four-way valve according to claim 1, wherein the first pilot valve (2) is a solenoid valve.
3. The four-way valve according to claim 1, further comprising a second pilot valve (11), the second pilot valve (11) being adapted to control the spool position of the first pilot valve (2).
4. The four-way valve according to claim 3, wherein the second pilot valve (11) is a solenoid valve, the second pilot valve (11) comprises a port C ", a port D", a port E "and a port S", the port C "of the second pilot valve (11) is connected to the first spool driving end of the first pilot valve (2) through a fifth signal pipe (7), the port E" of the second pilot valve (11) is connected to the second spool driving end of the first pilot valve (2) through a sixth signal pipe (8), and the port D "of the second pilot valve (11) is connected to D' of the first pilot valve (2) through a seventh signal pipe (9).
5. Four-way valve according to claim 4, wherein the interface S "of the second pilot valve (11) is connected to the interface S' of the first pilot valve (2) by an eighth signal pipe (10); or the interface S' of the second pilot valve (11) is used for being connected to a pipeline between a gas-liquid separator (16) of the air conditioning system and a suction port of a compressor (14) through an eighth signal pipe (10).
6. The four-way valve according to claim 1, wherein the interface C, the interface D, the interface E and the interface S are arranged in a cross shape; and/or the interface C ', the interface D', the interface E 'and the interface S' are arranged in a cross shape.
7. An air conditioning system comprising an indoor heat exchanger (12), an outdoor heat exchanger (13), a compressor (14), a throttling device (15), a gas-liquid separator (16) and a four-way valve (17), wherein the four-way valve (17) is the four-way valve as claimed in any one of claims 1 to 6, one end of a fourth signal pipe (6) of the four-way valve (17) is connected to a port S' of the first pilot valve (2), and the other end is connected to a pipeline between the gas-liquid separator (16) and a suction port of the compressor (14).
8. Air conditioning system according to claim 7, characterized in that it further comprises an accumulator (18), a first non-return valve (19), a second non-return valve (20), a third non-return valve (21) and a fourth non-return valve (22), wherein the first non-return valve (19) and the third non-return valve (21) form a first series line, the second non-return valve (20) and the fourth non-return valve (22) form a second series line, the first series line and the second series line being parallel, the outdoor heat exchanger (13) being connected between the first non-return valve (19) and the fourth non-return valve (22), the indoor heat exchanger (12) being connected between the second non-return valve (20) and the third non-return valve (21), the accumulator (18) having an inlet connected between the first non-return valve (19) and the second non-return valve (20), the liquid outlet of the reservoir (18) is connected between the third one-way valve (21) and the fourth one-way valve (22).
9. Air conditioning system according to claim 8, characterized in that a drying filter (23) and a solenoid valve are provided on the liquid outlet line of the reservoir (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081134.9A CN110094546B (en) | 2018-01-27 | 2018-01-27 | Four-way valve and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081134.9A CN110094546B (en) | 2018-01-27 | 2018-01-27 | Four-way valve and air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110094546A CN110094546A (en) | 2019-08-06 |
| CN110094546B true CN110094546B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810081134.9A Active CN110094546B (en) | 2018-01-27 | 2018-01-27 | Four-way valve and air conditioning system |
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| CN (1) | CN110094546B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208224A (en) * | 2000-01-21 | 2001-08-03 | Ranco Japan Ltd | Four-way control valve |
| CN101520216A (en) * | 2009-03-25 | 2009-09-02 | 珠海天济能源科技有限公司 | Air conditioner water heater |
| CN101839588A (en) * | 2010-05-27 | 2010-09-22 | 无锡同方人工环境有限公司 | High-temperature water outlet and total heat recovery triple co-generation machine set |
| CN201925524U (en) * | 2011-01-17 | 2011-08-10 | 东莞市瑞星空调设备有限公司 | Three-way reversing valve of coolant system |
| CN102537413A (en) * | 2010-12-20 | 2012-07-04 | 陈则韶 | Three-way valve with electromagnetic pilot sliding valve for air-conditioner water heater |
| CN203518332U (en) * | 2013-10-10 | 2014-04-02 | 珠海格力电器股份有限公司 | Heat recovery system and heat recovery unit with same |
| CN104819591A (en) * | 2015-04-24 | 2015-08-05 | 河南佰衡节能技术有限公司 | Agricultural local product heating pump drying device with refrigeration function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2863246B2 (en) * | 1990-03-09 | 1999-03-03 | 松下冷機株式会社 | Air conditioning |
-
2018
- 2018-01-27 CN CN201810081134.9A patent/CN110094546B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208224A (en) * | 2000-01-21 | 2001-08-03 | Ranco Japan Ltd | Four-way control valve |
| CN101520216A (en) * | 2009-03-25 | 2009-09-02 | 珠海天济能源科技有限公司 | Air conditioner water heater |
| CN101839588A (en) * | 2010-05-27 | 2010-09-22 | 无锡同方人工环境有限公司 | High-temperature water outlet and total heat recovery triple co-generation machine set |
| CN102537413A (en) * | 2010-12-20 | 2012-07-04 | 陈则韶 | Three-way valve with electromagnetic pilot sliding valve for air-conditioner water heater |
| CN201925524U (en) * | 2011-01-17 | 2011-08-10 | 东莞市瑞星空调设备有限公司 | Three-way reversing valve of coolant system |
| CN203518332U (en) * | 2013-10-10 | 2014-04-02 | 珠海格力电器股份有限公司 | Heat recovery system and heat recovery unit with same |
| CN104819591A (en) * | 2015-04-24 | 2015-08-05 | 河南佰衡节能技术有限公司 | Agricultural local product heating pump drying device with refrigeration function |
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| CN110094546A (en) | 2019-08-06 |
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