CN113310253A - Four-way reversing valve, air conditioning system and control method of four-way reversing valve - Google Patents
Four-way reversing valve, air conditioning system and control method of four-way reversing valve Download PDFInfo
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- CN113310253A CN113310253A CN202110502048.2A CN202110502048A CN113310253A CN 113310253 A CN113310253 A CN 113310253A CN 202110502048 A CN202110502048 A CN 202110502048A CN 113310253 A CN113310253 A CN 113310253A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 29
- 238000005057 refrigeration Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 abstract description 23
- 230000009471 action Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to the technical field of four-way reversing valves, in particular to a four-way reversing valve, an air conditioning system and a control method of the four-way reversing valve, the air conditioning system comprises the four-way reversing valve, a compressor, an indoor unit and an outdoor unit, the four-way reversing valve comprises a main valve body with a first inner cavity and a valve core movably arranged in the first inner cavity, the main valve body is provided with a first valve port, a second valve port, a third valve port and a fourth valve port which are all communicated with the first inner cavity, the first valve port is communicated with an air suction port of the compressor, the second valve port is communicated with an air exhaust port of the compressor, the third valve port is communicated with the indoor unit, the fourth valve port is communicated with the outdoor unit, the valve core has a first position, a second position and a third position in the moving process, the valve ports are communicated differently when the valve core is at the first position or the second position, and the first valve port and the second valve port are cut off when the valve core is at the third position, the first valve port, the second valve port and the fourth valve port are cut off, and the refrigerant in the indoor unit and the refrigerant in the outdoor unit can be prevented from flowing back to the compressor.
Description
Technical Field
The invention relates to the technical field of four-way reversing valves, in particular to a four-way reversing valve, an air conditioning system and a control method of the four-way reversing valve.
Background
Under the condition that air conditioning system ultra-low temperature heats, the phenomenon that the refrigerant flows back to the compressor often appears, and this can make the refrigeration oil in the compressor diluted, and then causes the compressor and can't obtain effective lubrication and arouse wearing and tearing when starting between each moving part to, during the refrigerant flows back to the compressor, still can increase the liquid level height in the compressor, and then increased the oil extraction rate, oil extraction rate increases when causing the compressor to start.
In the prior art, the problem that the refrigerant flows back to the compressor is mainly solved by starting from the control logic of an air conditioning system and the design of the compressor, however, the design is more complicated, and the problem of refrigerant backflow is still serious, so that the problems of abrasion of the compressor and high oil discharge rate are caused.
Disclosure of Invention
The main purposes of the invention are: the four-way reversing valve, the air conditioning system and the control method of the four-way reversing valve are provided, so that the flow path between the compressor and other parts of the air conditioning system is cut off when the air conditioning system is shut down, and the problems of abrasion of the compressor and high oil discharge rate caused by refrigerant backflow of the air conditioning system are solved.
In order to achieve the technical problem, the invention provides a four-way reversing valve, wherein a four-way reversing valve bag comprises a main valve body with a first inner cavity and a valve core movably arranged in the first inner cavity, the main valve body is provided with a first valve port, a second valve port, a third valve port and a fourth valve port which are all communicated with the first inner cavity, and the valve core is provided with a first position, a second position and a third position in the moving process;
when the valve core is in the first position, the first port is communicated with the third port through the first inner cavity, and the second port is communicated with the fourth port through the first inner cavity; when the valve core is positioned at the second position, the first valve port and the fourth valve port are communicated through the first inner cavity, and the second valve port and the third valve port are communicated through the first inner cavity; when the valve core is located at the third position, the first valve port, the second valve port and the third valve port are cut off, and the first valve port, the second valve port and the fourth valve port are cut off.
Optionally, the valve core partitions the first inner cavity in the first inner cavity to form a first chamber, a second chamber, and a third chamber, the first chamber, the second chamber, and the third chamber are sequentially arranged along a moving direction of the valve core, and the valve core can move in the first inner cavity when a pressure difference exists between the first chamber and the third chamber;
when the valve core is positioned at the first position, the first valve port is communicated with the third valve port through the second chamber, and the second valve port is communicated with the fourth valve port through the third chamber; when the valve core is located at the second position, the first valve port and the fourth valve port are communicated through the second chamber, and the second valve port and the third valve port are communicated through the first chamber.
Optionally, the four-way reversing valve further includes a first elastic member and a second elastic member, the first elastic member is located in the first chamber, one end of the first elastic member is connected to the first end of the main valve body, the other end of the first elastic member is connected to the valve core, the second elastic member is located in the third chamber, one end of the second elastic member is connected to the second end of the main valve body, and the other end of the second elastic member is connected to the valve core.
Optionally, the four-way reversing valve further includes a first limiting member and a second limiting member, and the first limiting member and the second limiting member are respectively used for limiting the first position and the second position of the valve element moving in the first inner cavity.
Optionally, the first limiting member is fixed to the main valve body and at least a part of the first limiting member is located in the first elastic member, the second limiting member is fixed to the main valve body and at least a part of the second limiting member is located in the second elastic member, and the first limiting member and the second limiting member are both ejector rods.
Optionally, the valve core includes a valve core main body, a first baffle, and a second baffle, which are connected to each other, the first baffle and the second baffle are respectively disposed at two ends of the valve core main body, and the first baffle and the second baffle are respectively used for blocking the communication between the third valve port and the first inner cavity and the communication between the fourth valve port and the first inner cavity.
Optionally, the length of the first flap in the moving direction is no greater than the distance between the first valve port and the third valve port, and the length of the second flap in the moving direction is no greater than the distance between the first valve port and the fourth valve port.
Optionally, the valve element main body has two notches, and when the valve element is in the first position, the two notches respectively correspond to the third valve port and the first valve port so as to communicate the third valve port with the first valve port; when the valve core is located at the second position, the two notches respectively correspond to the first valve port and the fourth valve port so as to communicate the first valve port and the fourth valve port.
Optionally, the four-way reversing valve further comprises a control valve for controlling the valve core to move in the first inner cavity.
Optionally, the control valve includes a control valve body having a second inner cavity and a sliding bowl movably disposed in the second inner cavity, and the sliding bowl has a fourth position, a fifth position and a sixth position in a moving process;
when the sliding bowl is located at the fourth position, the second valve port is communicated with the third chamber through the second inner cavity, and the first valve port is communicated with the first chamber through the second inner cavity; when the sliding bowl is in the fifth position, the second valve port is communicated with the first chamber through the second inner cavity, and the first valve port is communicated with the third chamber through the second inner cavity; when the sliding bowl is located at the sixth position, the first valve port is communicated with the second valve port.
Optionally, the control valve further comprises a first magnetic attraction piece, a second magnetic attraction piece and a third magnetic attraction piece, the first magnetic attraction piece is connected with the sliding bowl, the second magnetic attraction piece and the third magnetic attraction piece are respectively sleeved on the control valve body and along the extending direction of the control valve body, and the second magnetic attraction piece and the third magnetic attraction piece work alternately.
Optionally, the control valve further includes a third elastic member, the third elastic member is located in the second inner cavity, one end of the third elastic member is connected to one end of the control valve body, and the other end of the third elastic member is connected to the sliding bowl.
Optionally, the control valve further includes a first capillary, a second capillary, a third capillary, and a fourth capillary, the first capillary is used for communicating the second inner cavity with the second valve port, the second capillary is used for communicating the second inner cavity with the first chamber, the third capillary is used for communicating the second inner cavity with the first valve port, and the fourth capillary is used for communicating the second inner cavity with the third chamber.
The invention also provides an air conditioning system, which comprises the four-way reversing valve, a compressor, an indoor unit and an outdoor unit, wherein the first valve port is communicated with the air suction port of the compressor, the second valve port is communicated with the air exhaust port of the compressor, the third valve port is communicated with the indoor unit, and the fourth valve port is communicated with the outdoor unit.
In addition, the invention also provides a control method of the four-way reversing valve, the control method of the four-way reversing valve is used for the air conditioning system, and the control method of the four-way reversing valve comprises the steps of controlling the valve core to move to the third position when the air conditioning system is shut down; when the air conditioning system is started, firstly judging the running mode of the air conditioning system, and if the air conditioning system is in a refrigeration mode, controlling the valve core to move to the first position; and if the air conditioning system is in a heating mode, controlling the valve core to move to the second position.
Optionally, if the air conditioning system is in a heating mode, determining whether the outdoor temperature is lower than T °, if so, delaying T seconds and then controlling the valve core to move to the second position, otherwise, directly controlling the valve core to move to the second position.
The invention has the beneficial effects that: the four-way reversing valve comprises a main valve body with a first inner cavity and a valve core, wherein the valve core is arranged in the first inner cavity and can move to a first position, a second position and a third position; when the valve core moves to the second position, the first valve port is communicated with the fourth valve port through the first inner cavity, and the second valve port is communicated with the third valve port through the first inner cavity; therefore, the four-way reversing valve can change the flow direction of the fluid by switching the flow channel of the fluid, thereby realizing the switching of two modes and meeting different requirements; when the valve core moves to the third position, the first valve port, the second valve port and the third valve port are cut off, and the first valve port, the second valve port and the fourth valve port are cut off, so that the third valve port and the fourth valve port are both cut off to be communicated with the first valve port and the second valve port, and fluid can be prevented from flowing back to the first valve port and the second valve port from the third valve port or from the fourth valve port. The novel three-mode switching four-way reversing valve is additionally provided with a cut-off mode on the basis of meeting the switching of two normal modes, and at the moment, the valve core is in the third position, so that the backflow of fluid can be avoided.
The air conditioning system comprises the four-way reversing valve, a compressor, an indoor unit and an outdoor unit, wherein a first valve port is communicated with an air suction port of the compressor, a second valve port is communicated with an air exhaust port of the compressor, a third valve port is communicated with the indoor unit, and a fourth valve port is communicated with the outdoor unit. When the valve core is at the first position, the air suction port of the compressor is communicated with the indoor unit, the air exhaust port of the compressor is communicated with the outdoor unit, and the air conditioning system is in a refrigeration mode; when the valve core is at the second position, the air suction port of the compressor is communicated with the outdoor unit, the air exhaust port of the compressor is communicated with the indoor unit, and the air conditioning system is in a heating mode; the functions of changing the flow direction of the refrigerant and converting indoor units and outdoor units of the air conditioning system in winter and summer by switching the flow channels of the refrigerant are realized, so that the switching between a refrigeration mode and a heating mode is realized, and the requirements of different seasons on the indoor temperature are met; when the valve core is positioned at the third position, the indoor unit, the outdoor unit and the compressor are all cut off, and then the refrigerant in the indoor unit and the outdoor unit can be prevented from flowing back to the compressor, so that the problem of abrasion caused by insufficient lubrication during the starting of the compressor under the condition of ultralow-temperature heating is prevented, the oil drainage rate is prevented from being increased due to the increase of the liquid level height in the compressor, and the purpose of effectively reducing the oil drainage rate in the starting process of the compressor is realized.
The control method of the four-way reversing valve is selected according to the operation mode of the air conditioning system, when the air conditioning system is shut down, the valve core is controlled to move to the third position, so that the air conditioning system is in a cut-off mode, refrigerant can be prevented from flowing back into a compressor, the abrasion problem caused by insufficient lubrication is prevented, the oil discharge rate in the starting process of the compressor is reduced, when the air conditioning system is started, if the air conditioning system is in a refrigeration mode, the valve core is controlled to move to the first position, and if the air conditioning system is in a heating mode, the valve core is controlled to move to the second position, so that the requirements of the air conditioning system for switching the refrigeration mode and the heating mode are met, and further the requirements of different seasons on the indoor temperature are met.
Drawings
The advantages of the above and/or additional aspects of the present invention will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the construction of the four-way reversing valve of the present invention (cut-off mode);
FIG. 2 is a schematic view of the four-way reversing valve of FIG. 1 in another configuration (cooling mode);
FIG. 3 is a schematic view of the four-way reversing valve of FIG. 1 in yet another condition (heating mode);
FIG. 4 is a schematic illustration of the valve cartridge of the four-way reversing valve of FIG. 1;
FIG. 5 is a schematic view of an air conditioning system having the four-way reversing valve of FIG. 1 (cut-off mode);
FIG. 6 is a schematic view of the air conditioning system of FIG. 5 in another state (cooling mode);
FIG. 7 is a schematic view of the air conditioning system of FIG. 5 in yet another state (heating mode);
wherein the correspondence between the reference numbers and the names of the components in fig. 1 to 7 is:
100. a four-way reversing valve;
10. a main valve body; 11. a first lumen;
20. a valve core; 21. a valve core main body; 211. a notch; 22. a first baffle plate; 23. a second baffle;
31. a first elastic member; 32. a second elastic member;
41. a first limit piece; 42. a second limiting member;
50. a control valve body; 51. a second lumen;
60. a sliding bowl;
71. a first magnetic attraction member; 72. a second magnetic attraction member; 73. a third magnetic attraction member;
81. a third elastic member; 82. a connecting rod;
91. a first capillary tube; 92. a second capillary tube; 93. a third capillary tube; 94. a fourth capillary tube;
200. a compressor;
300. an indoor unit;
400. an outdoor unit;
500. a throttle valve;
601. an air intake duct; 602. an exhaust pipe; 603. a first connecting pipe; 604. a second connecting pipe.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
An embodiment of the present invention provides a four-way reversing valve 100 of an air conditioning system, which can realize three-mode switching, and under the action of the four-way reversing valve 100, the air conditioning system can realize switching among a refrigeration mode, a heating mode and a cutoff mode, so as to satisfy three functions of refrigeration, heating and cutoff of the air conditioning system, and effectively avoid the backflow of a refrigerant in the cutoff mode. The four-way reversing valve 100 comprises a main valve body 10 with a first inner cavity 11 and a valve core 20 movably arranged in the first inner cavity 11, wherein the main valve body 10 is provided with a first valve port, a second valve port, a third valve port and a fourth valve port which are all communicated with the first inner cavity 11, the valve core 20 has a first position (a position shown in figure 2), a second position (a position shown in figure 3) and a third position (a position shown in figure 1) in the moving process, when the valve core 20 is at the first position, the first port and the third port are communicated through the first inner cavity 11, the second port and the fourth port are communicated through the first inner cavity 11, when the valve core 20 is at the second position, the first port and the fourth port are communicated through the first inner cavity 11, the second port and the third port are communicated through the first inner cavity 11, when the valve core 20 is at the third position, the first valve port, the second valve port and the third valve port are cut off, and the first valve port, the second valve port and the fourth valve port are cut off.
The four-way reversing valve 100 comprises a main valve body 10 with a first inner cavity 11 and a valve core 20, wherein the valve core 20 is arranged in the first inner cavity 11 and can move to a first position, a second position and a third position, when the valve core 20 moves to the first position, the first valve port is communicated with the third valve port through the first inner cavity 11, and the second valve port is communicated with the fourth valve port through the first inner cavity 11; when the valve core 20 moves to the second position, the first port is communicated with the fourth port through the first inner cavity 11, and the second port is communicated with the third port through the first inner cavity 11; therefore, the four-way reversing valve 100 can change the flow direction of the fluid by switching the flow channel of the fluid, thereby realizing the switching of two modes and meeting different requirements; when the valve element 20 moves to the third position, the first port, the second port, and the third port are blocked, and the first port, the second port, and the fourth port are blocked, so that the third port and the fourth port are blocked from communicating with the first port and the second port, and fluid can be prevented from flowing back to the first port and the second port from the third port or from the fourth port. The new three-mode switching four-way reversing valve 100 is additionally provided with a cut-off mode on the basis of meeting the switching of the two normal modes, and at the moment, the valve core 20 is in the third position, so that the backflow of fluid can be avoided.
It should be noted that, in this embodiment, the air conditioning system further includes a compressor 200, an indoor unit 300, an outdoor unit 400, and a throttle valve 500, where the compressor 200 is configured to compress a refrigerant into a liquid state, evaporate and absorb heat in one of the indoor unit 300 and the outdoor unit 400 into a gas, and after being throttled by the throttle valve 500, the other of the indoor unit 300 and the outdoor unit 400 can release heat to realize cooling or heating, a first valve port is communicated with a suction port of the compressor 200, a second valve port is communicated with an exhaust port of the compressor 200, a third valve port is communicated with the indoor unit 300, and a fourth valve port is communicated with the outdoor unit 400.
The air conditioning system includes a compressor 200, an indoor unit 300, and an outdoor unit 400, in addition to the four-way selector valve 100, wherein a first valve port is communicated with a suction port of the compressor 200, a second valve port is communicated with a discharge port of the compressor 200, a third valve port is communicated with the indoor unit 300, and a fourth valve port is communicated with the outdoor unit 400. When the valve core 20 is at the first position, as shown in fig. 6, the suction port of the compressor 200 is communicated with the indoor unit 300, the discharge port of the compressor 200 is communicated with the outdoor unit 400, and the air conditioning system is in a cooling mode; when the valve core 20 is at the second position, as shown in fig. 7, the suction port of the compressor 200 is communicated with the outdoor unit 400, the exhaust port of the compressor 200 is communicated with the indoor unit 300, and the air conditioning system is in a heating mode; the functions of changing the flow direction of the refrigerant and converting the indoor unit 300 and the outdoor unit 400 of the air-conditioning system in winter and summer by switching the flow channel of the refrigerant are realized, so that the switching between a refrigeration mode and a heating mode is realized, and the requirements of different seasons on the indoor temperature are met; when the valve core 20 is at the third position, as shown in fig. 5, the indoor unit 300, the outdoor unit 400 and the compressor 200 are all cut off, and thus the refrigerant in the indoor unit 300 and the outdoor unit 400 can be prevented from flowing back to the compressor 200, thereby preventing the wear problem caused by insufficient lubrication when the compressor 200 is started under the condition of ultra-low temperature heating, preventing the oil drainage rate from being increased due to the increase of the liquid level height in the compressor 200, and achieving the purpose of effectively reducing the oil drainage rate in the starting process of the compressor 200.
In this embodiment, the valve element 20 is slidably engaged with the main valve body 10, the axial directions of the first port, the second port, the third port and the fourth port are all perpendicular to the sliding direction of the valve element 20, the third port and the fourth port are disposed on the same side of the main valve body 10, the first port and the second port are disposed on two opposite sides of the main valve body 10, and the first port is located between the third port and the fourth port. Thus, when the valve core 20 slides in the first inner cavity 11 in a reciprocating manner, the communication between the first valve port and the third valve port or the fourth valve port, the communication between the second valve port and the fourth valve port or the third valve port, or the simultaneous sealing of the third valve port and the fourth valve port is facilitated, and the smooth switching of the air conditioning system in the three modes of cooling, heating and cutoff is facilitated, so that the overall structure is simple to set.
In this embodiment, the valve core 20 partitions the first internal cavity 11 in the first internal cavity 11 to form a first chamber, a second chamber, and a third chamber, the first chamber, the second chamber, and the third chamber are sequentially arranged along the sliding direction of the valve core 20, and the valve core 20 can slide from a third position to a first position or a second position in the first internal cavity 11 when a pressure difference exists between the first chamber and the third chamber, when the valve core 20 is at the first position, the first valve port and the third valve port are communicated through the second chamber, and the second valve port and the fourth valve port are communicated through the third chamber; when the valve core 20 is in the second position, the first port and the fourth port are communicated through the second chamber, and the second port and the third port are communicated through the first chamber. When the air conditioning system is in a cut-off mode, the compressor 200 sucks air and communicates with exhaust air at the position of the four-way reversing valve 100, the pressure of the first chamber is balanced with that of the third chamber, namely the pressure of the left end and the right end of the valve core 20 are balanced, and the valve core 20 is located at the third position; when the air conditioning system is in a refrigeration mode, the pressure of the first chamber is greater than that of the third chamber, namely the left end of the valve core 20 is a high-pressure end, the right end of the valve core 20 is a low-pressure end, and the valve core 20 slides to the left to a first position under the action of the pressure difference between the left end and the right end; when the air conditioning system is in a heating mode, the pressure of the third chamber is greater than the pressure of the first chamber, that is, the left end of the valve core 20 is a low-pressure end, the right end of the valve core 20 is a high-pressure end, and the valve core 20 slides to the right to a second position under the action of the pressure difference between the left end and the right end. In addition, in the present embodiment, when the air conditioning system is in the cut-off mode, the compressor 200 communicates between the suction and discharge at the position of the four-way selector valve 100, so that the internal air can be circulated, and a certain risk that the internal air is blocked completely and cannot be circulated is prevented.
Further, in this embodiment, the four-way reversing valve 100 further includes a first elastic member 31 and a second elastic member 32, the first elastic member 31 is located in the first chamber, one end of the first elastic member 31 is connected to the first end of the main valve body 10, the other end of the first elastic member 31 is connected to the valve core 20, the second elastic member 32 is located in the third chamber, one end of the second elastic member 32 is connected to the second end of the main valve body 10, and the other end of the second elastic member 32 is connected to the valve core 20. When the air conditioning system is in the cooling mode or the heating mode, the valve element 20 slides from the third position to the first position or the second position under the action of the pressure difference between the left end and the right end, the first elastic member 31 and the second elastic member 32 are both in an elastic deformation state, if the air conditioning system is converted into the cutoff mode, the pressure difference disappears, the first elastic member 31 and the second elastic member 32 both have a tendency of recovering to the original state, and can drive the valve element 20 to return to the third position, wherein one of the first elastic member 31 and the second elastic member 32 is elastically stretched, and the other one is elastically compressed, and when the air conditioning system is in the cutoff mode, the pressure difference does not exist between the first chamber and the third chamber, that is, the pressure at the left end and the right end of the valve element 20 is balanced, the valve element 20 can be in the third position under the elastic action of the first elastic member 31 and the second elastic member 32 at the left end and the right end, so as to achieve an accurate cutoff effect, and enable the compressor 200 and the indoor unit 300, The outdoor unit 400 has a flow path separated to prevent the refrigerant from flowing back, wherein the first elastic member 31 and the second elastic member 32 are both springs having the same elasticity.
In this embodiment, the four-way reversing valve 100 further includes a first limiting member 41 and a second limiting member 42, and the first limiting member 41 and the second limiting member 42 are respectively used for limiting a first position and a second position of the valve element 20 sliding in the first inner cavity 11. The first limiting piece 41 and the second limiting piece 42 are arranged to limit a first position and a second position of the valve core 20 sliding in the first inner cavity 11 under the action of a pressure difference between the left end and the right end, when the valve core 20 slides to the first position or the second position, the valve core contacts the first limiting piece 41 or the second limiting piece 42, the first limiting piece 41 or the second limiting piece 42 prevents the valve core 20 from continuously sliding, so that the valve core 20 is located at a correct position, and the normal refrigeration function and heating function of the air conditioning system are switched.
Further, in the present embodiment, the first limiting member 41 is fixed on the main valve body 10 and at least partially located in the first elastic member 31, the second limiting member 42 is fixed on the main valve body 10 and at least partially located in the second elastic member 32, and both the first limiting member 41 and the second limiting member 42 are push rods. Through adopting the ejector pin as the locating part, simple structure can play the spacing effect to case 20 is good, and can not influence the slip of case 20 in first inner chamber 11, can stop sliding when the end of case 20 and two ejector pins collides, and the structure sets up more simply reasonable in addition. Of course, in other embodiments, the limiting member is not limited to be the top rod, and other limiting structures may be adopted.
In the present embodiment, referring mainly to fig. 4, the valve core 20 includes a valve core main body 21, a first baffle 22 and a second baffle 23 connected to each other, the first baffle 22 and the second baffle 23 are respectively disposed at two ends of the valve core main body 21, and the first baffle 22 and the second baffle 23 are respectively used for blocking the communication between the third port and the fourth port and the first inner cavity 11. The first baffle 22 and the second baffle 23 are arranged to cover the third valve port and the fourth valve port, so that the refrigerant in the indoor unit 300 and the outdoor unit 400 can be prevented from flowing back to the compressor 200 through the third valve port and the fourth valve port, the first baffle 22 and the second baffle 23 can be connected by arranging the valve core main body 21, and the valve core main body 21, the first baffle 22 and the second baffle 23 synchronously slide in the first inner cavity 11, so that the smooth switching among the three modes of refrigeration, heating and cutoff is realized.
Further, in the present embodiment, the length of the first shutter 22 in the sliding direction is not greater than the distance between the first valve port and the third valve port, and the length of the second shutter 23 in the sliding direction is not greater than the distance between the first valve port and the fourth valve port. Therefore, the problem that the third valve port or the fourth valve port is blocked when the valve core 20 slides to the first position or the second position can be avoided, so as to ensure that the suction port is communicated with the indoor unit 300, the exhaust port is communicated with the outdoor unit 400, or the suction port is communicated with the outdoor unit 400, and the exhaust port is communicated with the indoor unit 300, so that the air conditioning system can normally realize cooling or heating.
Still further, in this embodiment, the valve body 21 has two notches 211, when the valve core 20 is in the first position, the two notches 211 respectively correspond to the third port and the first port to communicate the third port with the first port, and a second chamber is formed in the valve body 21, so that the third port is communicated with the first port through the two notches 211 and the second chamber; when the valve core 20 is at the second position, the two notches 211 respectively correspond to the first valve port and the fourth valve port to communicate the first valve port and the fourth valve port, and a second chamber is formed in the valve core main body 21, so that the first valve port and the fourth valve port are communicated through the two notches 211 and the second chamber.
In the embodiment, referring to fig. 4, the upper end of the valve core main body 21 is provided with a chamfer to avoid blocking the second valve port when the valve core main body slides to the first position or the second position.
In this embodiment, the four-way selector valve 100 further includes a control valve for controlling the movement of the valve spool 20 in the first chamber 11.
Specifically, in the present embodiment, the control valve includes a control valve body 50 having a second inner cavity 51 and a sliding bowl 60 movably disposed in the second inner cavity 51, the sliding bowl 60 has a fourth position, a fifth position and a sixth position in the moving process, when the sliding bowl 60 is located at the fourth position, the second valve port communicates with the third chamber through the second inner cavity 51, and the first valve port communicates with the first chamber through the second inner cavity 51; when the sliding bowl 60 is in the fifth position, the second valve port is communicated with the first chamber through the second inner cavity 51, and the first valve port is communicated with the third chamber through the second inner cavity 51; when the sliding bowl 60 is located at the sixth position, the first valve port is communicated with the second valve port, wherein the sliding bowl 60 is in sliding fit with the control valve body 50. When the sliding bowl 60 slides to the sixth position, the compressor 200 sucks air and exhausts air at the position of the four-way reversing valve 100, the pressure of the first chamber and the pressure of the third chamber are balanced, namely the pressure of the left end and the right end of the valve core 20 are balanced, and the valve core 20 does not slide; when the sliding bowl 60 slides to the fourth position, the air suction port is communicated with the first chamber, the air exhaust port is communicated with the third chamber, the pressure of the first chamber is greater than that of the third chamber, namely the first chamber is a low-pressure end, the third chamber is a high-pressure end, and the valve core 20 slides to the first position leftwards under the action of the pressure difference between the left side and the right side; when the sliding bowl 60 slides to the fifth position, the air suction port is communicated with the third chamber, the air discharge port is communicated with the first chamber, the pressure of the third chamber is greater than that of the first chamber, namely, the third chamber is a low-pressure end, the first chamber is a high-pressure end, and the valve core 20 slides to the second position to the right side under the action of the pressure difference between the left side and the right side, so that the sliding of the sliding bowl 60 in the second inner cavity 51 is realized, the pressure difference exists between the first chamber and the third chamber, and the valve core 20 slides to the first position or the second position in the first inner cavity 11.
In this embodiment, the control valve further includes a first magnetic attraction member 71, a second magnetic attraction member 72 and a third magnetic attraction member 73, the first magnetic attraction member 71 is connected to the sliding bowl 60, the second magnetic attraction member 72 and the third magnetic attraction member 73 are respectively sleeved on the control valve body 50 and are arranged along the extending direction of the control valve body 50, the second magnetic attraction member 72 and the third magnetic attraction member 73 are coaxially arranged with the control valve body 50, and the second magnetic attraction member 72 and the third magnetic attraction member 73 work alternately. When the air conditioning system is in a cooling mode, the second magnetic attraction piece 72 works, the first magnetic attraction piece 71 drives the sliding bowl 60 to slide to the fourth position under the magnetic attraction effect of the second magnetic attraction piece 72, the valve core 20 slides to the first position under pressure difference, the suction port of the compressor 200 is communicated with the indoor unit 300, the exhaust port of the compressor 200 is communicated with the outdoor unit 400, and the air conditioning system cools; when the air conditioning system is in a heating mode, the third magnetic attraction piece 73 works, the first magnetic attraction piece 71 drives the sliding bowl 60 to slide to a fifth position under the magnetic attraction effect of the third magnetic attraction piece 73, the valve core 20 slides to a second position under pressure difference, the suction port of the compressor 200 is communicated with the outdoor unit 400, the exhaust port of the compressor 200 is communicated with the indoor unit 300, and the air conditioning system heats; when the air conditioning system is in the cut-off mode, the second magnetic attraction piece 72 and the third magnetic attraction piece 73 do not work, the sliding bowl 60 is located at the sixth position, the valve core 20 is located at the first position, and the indoor unit 300, the outdoor unit 400 and the compressor 200 are all cut off, so that the effect of preventing the refrigerant in the indoor unit 300 and the outdoor unit 400 from flowing back to the compressor 200 in the cut-off mode, namely when the air conditioning system does not work is achieved. When the air conditioning system works, the second magnetic attraction piece 72 or the third magnetic attraction piece 73 can work according to a specific working mode so as to meet the requirements of refrigeration or heating, when the air conditioning system is in the non-operating mode, the second magnetic attraction piece 72 and the third magnetic attraction piece 73 are not operated, the sliding bowl 60 is located at the initial sixth position, so that the valve core 20 is located at the third position and shields the third valve port and the fourth valve port, thereby not only realizing the smooth operation of the two modes when the air conditioning system works, and as long as the air conditioning system does not work, the communication between the compressor 200 and the pipes of the indoor unit 300 and the outdoor unit 400 is cut off, preventing the refrigerant in the indoor unit 300 and the outdoor unit 400 from flowing back to the compressor 200, the first magnetic member 71 can be an iron core, and the second magnetic member 72 and the third magnetic member 73 can be electromagnetic coils, which can magnetically attract the iron core when the electromagnetic coils are energized.
Further, in this embodiment, the second magnetic-attracting element 72 and the third magnetic-attracting element 73 may be disposed in a plurality of numbers, and the shapes and sizes of the second magnetic-attracting element 72 and the third magnetic-attracting element 73 are not particularly limited, and may be set according to actual requirements as long as the sliding bowl 60 can slide to the fourth position and the fifth position smoothly.
In this embodiment, the control valve further includes a third elastic member 81, the third elastic member 81 is located in the second inner cavity 51, one end of the third elastic member 81 is connected to one end of the control valve body 50, and the other end of the third elastic member 81 is connected to the sliding bowl 60. When the air conditioning system is in a cooling mode or a heating mode, one of the second magnetic attraction piece 72 or the third magnetic attraction piece 73 is powered on, the first magnetic attraction piece 71 drives the sliding bowl 60 to slide to a fifth position or a sixth position towards the second magnetic attraction piece 72 or the third magnetic attraction piece 73, the third elastic piece 81 is in an elastic deformation state, if the air conditioning system is changed into a cut-off mode, the power on stops, the magnetic attraction of the second magnetic attraction piece 72 or the third magnetic attraction piece 73 to the first magnetic attraction piece 71 disappears, and under the elastic action of the third elastic piece 81, the sliding bowl 60 can be driven to return to the sixth position.
In this embodiment, the control valve further includes a connecting rod 82, and the first magnetic attraction member 71, the sliding bowl 60 and the third elastic member 81 are connected through the connecting rod 82.
In this embodiment, the control valve further includes a first capillary 91, a second capillary 92, a third capillary 93 and a fourth capillary 94, the first capillary 91 is used for communicating the second cavity 51 with the exhaust port, the second capillary 92 is used for communicating the second cavity 51 with the first chamber, the third capillary 93 is used for communicating the second cavity 51 with the suction port, and the fourth capillary 94 is used for communicating the second cavity 51 with the third chamber.
In this embodiment, the air conditioning system further includes an air suction pipe 601, an air discharge pipe 602, a first connection pipe 603 and a second connection pipe 604, the first valve port is communicated with the air suction port of the compressor 200 through the air suction pipe 601, the second valve port is communicated with the air discharge port of the compressor 200 through the air discharge pipe 602, the third valve port is communicated with the indoor unit 300 through the first connection pipe 603, and the fourth valve port is communicated with the outdoor unit 400 through the second connection pipe 604.
In addition, the invention also provides a control method of the four-way reversing valve, which is used for the air conditioning system, and the control method of the four-way reversing valve comprises the steps of controlling the valve core 20 to slide to a third position when the air conditioning system is shut down, judging the running mode of the air conditioning system when the air conditioning system is started, and controlling the valve core 20 to slide to a first position if the air conditioning system is in a refrigeration mode; if the air conditioning system is in the heating mode, the control valve 20 slides to the second position.
The control method of the four-way reversing valve is selected according to the operation mode of the air conditioning system, when the air conditioning system is shut down, the second magnetic attraction piece 72 and the third magnetic attraction piece 73 are not electrified, the valve core 20 is controlled to slide to the third position, so that the air conditioning system is in a cut-off state, refrigerant can be prevented from flowing back to the compressor 200, the abrasion problem caused by insufficient lubrication is prevented, and the oil discharge rate in the starting process of the compressor 200 is reduced.
In this embodiment, if the air conditioning system is in the heating mode, it is determined whether the outdoor temperature is lower than T °, if so, the valve element 20 is controlled to slide to the second position after delaying T seconds, otherwise, the valve element 20 is directly controlled to slide to the second position. Thus, a pressure difference is formed, and the backflow of the liquid refrigerant caused by insufficient frequency when the compressor 200 is started is prevented.
The air conditioning system of the present invention is further described below: when the air conditioning system is powered off, the air conditioning system is in a cut-off mode, the sliding bowl 60 is located at the sixth position under the action of the third elastic part 81, the first capillary tube 91, the second capillary tube 92, the third capillary tube 93 and the fourth capillary tube 94 are in a communicated state, the suction port of the compressor 200 is communicated with the exhaust port, the left end and the right end of the valve core 20 are in pressure balance and are located at the third position under the action of the first elastic part 31 and the second elastic part 32, at this time, the first connecting pipe 603 and the second connecting pipe 604 are respectively shielded by the first baffle plate 22 and the second baffle plate 23, so that the compressor 200 is separated from the flow paths of the indoor unit 300 and the outdoor unit 400, and the refrigerant backflow is prevented; when the air conditioning system is powered on, if the air conditioning system is in a cooling mode, the second magnetic attraction piece 72 is powered on, the first magnetic attraction piece 71 drives the sliding bowl 60 to slide to a fourth position under the magnetic attraction effect of the second magnetic attraction piece 72, the second capillary tube 92 is communicated with the third capillary tube 93, the first capillary tube 91 is communicated with the fourth capillary tube 94, the first capillary tube 91 is communicated with the exhaust pipe 602, the fourth capillary tube 94 is communicated with the third chamber, the right end of the valve core 20 is a high-pressure end, the third capillary tube 93 is communicated with the air suction pipe 601, the second capillary tube 92 is communicated with the first chamber, the left end of the valve core 20 is a low-pressure end, the valve core 20 moves to the left end under the effect of the pressure difference between the left end and the right end and collides with the first limiting piece 41, at this time, the exhaust pipe 602 is communicated with the, that is, the discharge port of the compressor 200 is communicated with the outdoor unit 400, and the suction port of the compressor 200 is communicated with the indoor unit 300; if the air conditioning system is in the heating mode, the third magnetic attraction piece 73 is energized, the first magnetic attraction piece 71 drives the sliding bowl 60 to slide to the fifth position under the magnetic attraction effect of the third magnetic attraction piece 73, the third capillary tube 93 is communicated with the fourth capillary tube 94, the first capillary tube 91 is communicated with the second capillary tube 92, the first capillary tube 91 is communicated with the exhaust pipe 602, the second capillary tube 92 is communicated with the first chamber, the left end of the valve core 20 is a high-pressure end, the third capillary tube 93 is communicated with the suction pipe 601, the fourth capillary tube 94 is communicated with the third chamber, the right end of the valve core 20 is a low-pressure end, the valve core 20 moves to the right end under the effect of the pressure difference between the left end and the right end and collides with the second stopper 42, at this time, the exhaust pipe 602 is communicated with the first connection pipe 603, the suction pipe 601 is communicated with the second connection pipe 604, that is, the discharge port of the compressor 200 communicates with the indoor unit 300, and the suction port of the compressor 200 communicates with the outdoor unit 400.
In another embodiment, the electromagnetic valves may be directly disposed on the suction port and the discharge port of the compressor 200 or the large and small pipes, the connection between the compressor 200 and the flow paths of the indoor unit 300 and the outdoor unit 400 is blocked by opening and closing the electromagnetic valves, and the switching between the three modes is realized by matching with the switching function of the normal four-way switching valve 100.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (16)
1. A four-way reversing valve is characterized by comprising a main valve body (10) with a first inner cavity (11) and a valve core (20) movably arranged in the first inner cavity (11), wherein the main valve body (10) is provided with a first valve port, a second valve port, a third valve port and a fourth valve port which are communicated with the first inner cavity (11), and the valve core (20) has a first position, a second position and a third position in the moving process;
when the valve core (20) is in the first position, the first port and the third port are communicated through the first inner cavity (11), and the second port and the fourth port are communicated through the first inner cavity (11); when the valve core (20) is in the second position, the first valve port and the fourth valve port are communicated through the first inner cavity (11), and the second valve port and the third valve port are communicated through the first inner cavity (11); when the valve core (20) is in the third position, the first valve port, the second valve port and the third valve port are blocked, and the first valve port, the second valve port and the fourth valve port are blocked.
2. The four-way reversing valve according to claim 1, wherein the valve core (20) divides the first inner cavity (11) into a first chamber, a second chamber and a third chamber in the first inner cavity (11), the first chamber, the second chamber and the third chamber are arranged in sequence along the moving direction of the valve core (20), and the valve core (20) can move in the first inner cavity (11) when the pressure difference exists between the first chamber and the third chamber;
when the valve core (20) is in the first position, the first valve port and the third valve port are communicated through the second chamber, and the second valve port and the fourth valve port are communicated through the third chamber; when the valve core (20) is in the second position, the first port and the fourth port are communicated through the second chamber, and the second port and the third port are communicated through the first chamber.
3. The four-way reversing valve according to claim 2, wherein the four-way reversing valve (100) further comprises a first elastic member (31) and a second elastic member (32), the first elastic member (31) is located in the first chamber, one end of the first elastic member (31) is connected with the first end of the main valve body (10), the other end of the first elastic member (31) is connected with the valve core (20), the second elastic member (32) is located in the third chamber, one end of the second elastic member (32) is connected with the second end of the main valve body (10), and the other end of the second elastic member (32) is connected with the valve core (20).
4. The four-way reversing valve according to claim 3, wherein the four-way reversing valve (100) further comprises a first limiting member (41) and a second limiting member (42), and the first limiting member (41) and the second limiting member (42) are respectively used for limiting the first position and the second position of the valve core (20) moving in the first inner cavity (11).
5. The four-way reversing valve according to claim 4, wherein the first limiting member (41) is fixed on the main valve body (10) and at least partially located in the first elastic member (31), the second limiting member (42) is fixed on the main valve body (10) and at least partially located in the second elastic member (32), and the first limiting member (41) and the second limiting member (42) are both push rods.
6. The four-way reversing valve according to any one of claims 1 to 5, wherein the spool (20) comprises a spool body (21), a first baffle plate (22) and a second baffle plate (23) which are connected, the first baffle plate (22) and the second baffle plate (23) are respectively arranged at two ends of the spool body (21), and the first baffle plate (22) and the second baffle plate (23) are respectively used for cutting off the communication between the third port and the fourth port and the first inner cavity (11).
7. The four-way reversing valve according to claim 6, wherein the length of the first baffle (22) in the active direction is no greater than the distance between the first port and the third port, and the length of the second baffle (23) in the active direction is no greater than the distance between the first port and the fourth port.
8. The four-way reversing valve according to claim 7, wherein the spool body (21) is provided with two notches (211), and when the spool (20) is in the first position, the two notches (211) correspond to the third port and the first port respectively so as to communicate the third port with the first port; when the valve core (20) is located at the second position, the two notches (211) respectively correspond to the first valve port and the fourth valve port so as to communicate the first valve port and the fourth valve port.
9. The four-way reversing valve according to any one of claims 2 to 5, wherein the four-way reversing valve (100) further comprises a control valve for controlling the movement of the spool (20) in the first inner chamber (11).
10. The four-way reversing valve according to claim 9, wherein the control valve comprises a control valve body (50) having a second internal cavity (51) and a slide bowl (60) movably disposed in the second internal cavity (51), the slide bowl (60) having a fourth position, a fifth position, and a sixth position during movement;
when the sliding bowl (60) is in the fourth position, the second valve port is communicated with the third chamber through the second inner cavity (51), and the first valve port is communicated with the first chamber through the second inner cavity (51); when the sliding bowl (60) is in the fifth position, the second valve port is communicated with the first chamber through the second inner cavity (51), and the first valve port is communicated with the third chamber through the second inner cavity (51); when the sliding bowl (60) is in the sixth position, the first valve port is communicated with the second valve port.
11. The four-way reversing valve according to claim 10, further comprising a first magnetic attraction member (71), a second magnetic attraction member (72), and a third magnetic attraction member (73), wherein the first magnetic attraction member (71) is connected to the sliding bowl (60), the second magnetic attraction member (72) and the third magnetic attraction member (73) are respectively sleeved on the control valve body (50) and arranged along the extending direction of the control valve body (50), and the second magnetic attraction member (72) and the third magnetic attraction member (73) work alternately.
12. The four-way reversing valve according to claim 11, wherein the control valve further comprises a third elastic member (81), the third elastic member (81) is positioned in the second inner cavity (51), one end of the third elastic member (81) is connected with one end of the control valve body (50), and the other end of the third elastic member (81) is connected with the sliding bowl (60).
13. The four-way reversing valve according to any one of claims 10 to 12, wherein the control valve further comprises a first capillary tube (91), a second capillary tube (92), a third capillary tube (93) and a fourth capillary tube (94), the first capillary tube (91) is used for communicating the second inner cavity (51) with the second valve port, the second capillary tube (92) is used for communicating the second inner cavity (51) with the first chamber, the third capillary tube (93) is used for communicating the second inner cavity (51) with the first valve port, and the fourth capillary tube (94) is used for communicating the second inner cavity (51) with the third chamber.
14. An air conditioning system, comprising the four-way reversing valve (100) according to any one of claims 1 to 13, a compressor (200), an indoor unit (300), and an outdoor unit (400), wherein the first port communicates with a suction port of the compressor (200), the second port communicates with a discharge port of the compressor (200), the third port communicates with the indoor unit (300), and the fourth port communicates with the outdoor unit (400).
15. A control method of a four-way reversing valve for an air conditioning system according to claim 14, comprising:
when the air conditioning system is shut down, the valve core (20) is controlled to move to the third position;
when the air conditioning system is started, firstly judging the running mode of the air conditioning system, and if the air conditioning system is in a refrigeration mode, controlling the valve core (20) to move to the first position; and if the air conditioning system is in a heating mode, controlling the valve core (20) to move to the second position.
16. The control method of the four-way reversing valve according to claim 15, wherein if the air conditioning system is in a heating mode, determining whether the outdoor temperature is lower than T °, if so, delaying T seconds and then controlling the valve element (20) to move to the second position, otherwise, directly controlling the valve element (20) to move to the second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110502048.2A CN113310253A (en) | 2021-05-08 | 2021-05-08 | Four-way reversing valve, air conditioning system and control method of four-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110502048.2A CN113310253A (en) | 2021-05-08 | 2021-05-08 | Four-way reversing valve, air conditioning system and control method of four-way reversing valve |
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| Publication Number | Publication Date |
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| CN113310253A true CN113310253A (en) | 2021-08-27 |
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| CN202110502048.2A Withdrawn CN113310253A (en) | 2021-05-08 | 2021-05-08 | Four-way reversing valve, air conditioning system and control method of four-way reversing valve |
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| CN (1) | CN113310253A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760709A (en) * | 1986-09-11 | 1988-08-02 | Kabushiki Kaisha Saginomiya Seisakusho | Five-way valve having simultaneous defrosting and heating functions |
| CN202612713U (en) * | 2012-06-30 | 2012-12-19 | 浙江盾安禾田金属有限公司 | Electromagnetic directional valve |
| CN105423658A (en) * | 2015-12-25 | 2016-03-23 | 西安交通大学 | Four-way reversing valve with stopping function |
| CN106032847A (en) * | 2015-03-17 | 2016-10-19 | 浙江三花制冷集团有限公司 | Change-over valve and air-conditioning system comprising the same |
| CN206847113U (en) * | 2017-05-19 | 2018-01-05 | 西安交通大学 | A kind of four-way reversing valve with bypass function |
-
2021
- 2021-05-08 CN CN202110502048.2A patent/CN113310253A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760709A (en) * | 1986-09-11 | 1988-08-02 | Kabushiki Kaisha Saginomiya Seisakusho | Five-way valve having simultaneous defrosting and heating functions |
| CN202612713U (en) * | 2012-06-30 | 2012-12-19 | 浙江盾安禾田金属有限公司 | Electromagnetic directional valve |
| CN106032847A (en) * | 2015-03-17 | 2016-10-19 | 浙江三花制冷集团有限公司 | Change-over valve and air-conditioning system comprising the same |
| CN105423658A (en) * | 2015-12-25 | 2016-03-23 | 西安交通大学 | Four-way reversing valve with stopping function |
| CN206847113U (en) * | 2017-05-19 | 2018-01-05 | 西安交通大学 | A kind of four-way reversing valve with bypass function |
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Application publication date: 20210827 |