CN209877423U - Three-way flow direction conversion device for refrigerant - Google Patents
Three-way flow direction conversion device for refrigerant Download PDFInfo
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- CN209877423U CN209877423U CN201920350648.XU CN201920350648U CN209877423U CN 209877423 U CN209877423 U CN 209877423U CN 201920350648 U CN201920350648 U CN 201920350648U CN 209877423 U CN209877423 U CN 209877423U
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Abstract
The utility model discloses a refrigerant three-way flow direction conversion device, which at least comprises a compression mechanism, a first four-way valve, a second four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a user heat exchanger, a first throttling mechanism, a second throttling mechanism, a third throttling mechanism, a first check valve, a second check valve, a flow direction control valve, a third check valve and a fourth check valve; a low-pressure node of the first four-way valve is connected with a low-pressure node of the second four-way valve through a sixty-fifth pipeline, an outlet end of the compression mechanism and an inlet end of the compression mechanism are sequentially connected with a sixty-fifth pipeline between the low-pressure node of the first four-way valve and the low-pressure node of the second four-way valve through the sixty-sixth pipeline, an outlet end of the compression mechanism and an inlet end of the compression mechanism, and a high-pressure node of the second four-way valve is connected with a sixty-sixth pipeline between the outlet end of the compression mechanism and the high-; the method is characterized in that: when the multifunctional water heater works, the three passages can realize bidirectional flow, and more functions can be realized.
Description
Technical Field
The utility model relates to a refrigerant tee bend flow direction conversion equipment belongs to refrigeration technology field.
Background
The applicant of the present invention granted permission at 29/06/2016 and the patent number 201110355023.0 proposes a refrigerant three-way flow direction switching device, the system composition of which is shown in fig. 3, as can be seen from fig. 3, in the switching device, the refrigerant can only realize one-way flow through the passage where the fifty-first pipeline 51 is located, and since the refrigerant in the passage can not realize two-way flow, the refrigerant three-way flow direction switching device has few functions and limits the practical application range.
Disclosure of Invention
The utility model aims at providing a can make three route all can realize two-way flow, and job stabilization, simple structure, can realize more conversion function's refrigerant tee bend flow direction conversion equipment.
In order to overcome the problems existing in the prior art, the utility model provides a technical scheme is:
the utility model provides a refrigerant three-way flow direction conversion equipment, includes compression mechanism (1), first four-way valve (70), second four-way valve (80), first check valve (21), second check valve (22), characterized by: the refrigerant three-way flow direction conversion device also comprises a flow direction control valve (12), a third one-way valve (23) and a fourth one-way valve (24);
a low-pressure node (73) of the first four-way valve (70) is connected with a low-pressure node (83) of the second four-way valve (80) through a sixty-fifth pipeline (65) sequentially from a high-pressure node (71) of the first four-way valve (70) to a sixty-fifth pipeline (65) between the low-pressure node (73) of the first four-way valve (70) and the low-pressure node (83) of the second four-way valve (80) through a sixty-fifth pipeline (60), an outlet end of the compression mechanism (1), an inlet end of the compression mechanism (1), and a sixty-third pipeline (63), and a high-pressure node (81) of the second four-way valve (80) is connected with the sixty pipeline (60) between the outlet end of the compression mechanism (1) and the high-pressure node (71) of the first four-way valve (70) through a fifty-ninth pipeline (59);
a common node (82) of the second four-way valve (80) is connected with a common node (72) of the first four-way valve (70) through a sixteenth pipeline (66), an inlet end of the second one-way valve (22), an outlet end of the first one-way valve (21), an inlet end of the first one-way valve (21) and a sixteenth pipeline (61) in sequence;
the pipeline between the outlet end of the first check valve (21) and the outlet end of the second check valve (22) is connected with a fifty-first pipeline (51);
a normally open node (74) of the first four-way valve (70) is connected with a sixty-four pipeline (64);
a normally open node (84) of the second four-way valve (80) is connected with a sixty-seventh pipeline (67);
the outlet end of the third one-way valve (23) is connected with a sixty-sixth pipeline (66), and the inlet end of the third one-way valve (23) is connected with a sixty-first pipeline (61) through the inlet end of the fourth one-way valve (24) and the outlet end of the fourth one-way valve (24) in sequence;
one end of the flow direction control valve (12) is connected with a pipeline between the outlet end of the first one-way valve (21) and the outlet end of the second one-way valve (22), and the other end of the flow direction control valve (12) is connected with a pipeline between the inlet end of the third one-way valve (23) and the inlet end of the fourth one-way valve (24).
Compared with the prior art, the utility model, its beneficial effect is:
1. in the working process, the three channels can realize bidirectional flow, and can realize more conversion functions according to the requirement;
2. the work is stable and reliable;
3. the structure is simple, and the cost is low;
4. the utility model is suitable for an air source heat pump air conditioning equipment of industry and civilian field, multiple functions has, the air source heat pump air conditioning equipment of specially adapted refrigeration, heating function.
Drawings
FIG. 1 is a schematic structural view of a three-way flow direction switching device of the refrigerant of the present invention;
fig. 2 is a schematic structural diagram of an air source heat pump air conditioning equipment using a refrigerant three-way flow direction conversion device according to embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a prior art structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the three-way flow direction switching device 100 of the present invention, and the whole device includes the following components: the compression mechanism 1, the first four-way valve 70, the second four-way valve 80, the flow direction control valve 12, the first check valve 21, the second check valve 22, the third check valve 23, and the fourth check valve 24. The connection mode of the whole refrigerant three-way flow direction conversion device 100 is as follows:
a low-pressure node 73 of the first four-way valve 70 is connected with a low-pressure node 83 of the second four-way valve 80 through a sixteenth pipeline 65, a high-pressure node 71 of the first four-way valve 70 is connected with a sixteenth pipeline 65 between the low-pressure node 73 of the first four-way valve 70 and the low-pressure node 83 of the second four-way valve 80 through a sixteenth pipeline 60, an outlet end of the compression mechanism 1, an inlet end of the compression mechanism 1 and a sixteenth pipeline 63 in sequence, a high-pressure node 81 of the second four-way valve 80 is connected with a sixteenth pipeline 60 between the outlet end of the compression mechanism 1 and the high-pressure node 71 of the first four-way valve 70 through a nineteenth pipeline 59, a common node 82 of the second four-way valve 80 is connected with a common node 72 of the first four-way valve 70 through a sixteenth pipeline 66, an inlet end of the second one-way valve 22, an outlet end, the pipeline between the outlet end of the first one-way valve 21 and the outlet end of the second one-way valve 22 is connected with a fifty-first pipeline 51, the normally open node 74 of the first four-way valve 70 is connected with a sixty-fourth pipeline 64, the normally open node 84 of the second four-way valve 80 is connected with a sixty-seventh pipeline 67, the outlet end of the third one-way valve 23 is connected with a sixty-sixth pipeline 66, the inlet end of the third one-way valve 23 is connected with the sixty-first pipeline 61 sequentially through the inlet end of the fourth one-way valve 24 and the outlet end of the fourth one-way valve 24, one end of the flow direction control valve 12 is connected with the pipeline between the outlet end of the first one-way valve 21 and the outlet end of the second one-way valve 22, and the other end of the flow direction control valve 12 is connected with.
In the three-way refrigerant flow direction switching device 100 shown in fig. 1 of the present invention, any one of the first check valve 21, the second check valve 22, the third check valve 23, and the fourth check valve 24 may be replaced with any one of a solenoid valve, a throttle mechanism (e.g., an electronic expansion valve) having a shutoff function, or a flow rate adjusting mechanism having a shutoff function.
In the three-way refrigerant flow direction switching device 100 shown in fig. 1 of the present invention, the compression mechanism 1 may be a single-stage compressor including at least one compressor, may be a two-stage compression including at least one low-pressure compressor and at least one high-pressure compressor, or may be a two-stage compression including at least one compressor.
Any one or two of the low-pressure compressor and the high-pressure compressor can adopt any one of the following compressors: scroll compressors, screw compressors, rolling rotor compressors, sliding vane compressors, centrifugal compressors, digital scroll compressors; any one or two of the low-pressure compressor and the high-pressure compressor can be simultaneously used, and the compressor can also be a variable-capacity compressor (such as an inverter compressor and a digital scroll compressor) or a fixed-speed compressor.
In the three-way flow direction switching device 100 of the refrigerant shown in fig. 1, when the compression mechanism 1 is a single-stage compressor composed of at least one compressor, the compression mechanism 1 may adopt any one of the following compressors: scroll compressors, screw compressors, rolling rotor compressors, sliding vane compressors, centrifugal compressors, digital scroll compressors; the compression mechanism 1 can also be a variable-capacity compressor (such as an inverter compressor and a digital scroll compressor), or a fixed-speed compressor; the compression mechanism 1 can also be a compressor unit consisting of at least one variable-capacity compressor or a compressor unit consisting of at least one constant-speed compressor; the compression mechanism 1 may be a compressor unit including at least one variable capacity compressor and at least one fixed speed compressor.
The flow direction control valve 12 is a solenoid valve, particularly a normally open type solenoid valve, the valve body of which is usually made of copper or stainless steel; the brand may be any one of sanhua, dunan, heron, dengface, kale, etc.
The first four-way valve 70 and the second four-way valve 80 can be any one of the following brands, such as sanhua, dunan, japan aigret, denfoss, kale, xinsanrong, and the like, and the valve body material can be copper or stainless steel, or carbon steel; when in reversing, the magnetic valve and the magnetic valve are reversed by electrifying and deenergizing a small magnetic pilot valve, or are electrically reversed, for example: bistable electronic four-way change valve.
In the three-way flow direction switching device 100 of the refrigerant shown in fig. 1 of the present invention, all the pipes are copper pipes.
The three-way refrigerant flow direction switching device 100 shown in fig. 1 can be further improved by adding an oil separator to the three-way refrigerant flow direction switching device 100, and the oil separator is connected in the system in the following manner: the oil separator inlet end is connected to the compression mechanism 1 outlet end, and the oil separator outlet end is connected to sixty-th piping 60 and fifty-ninth piping 59. In operation, the oil separator functions to separate oil from the exhaust gas of the compression mechanism 1.
A further improvement can be made by adding a gas-liquid separator to the refrigerant three-way flow direction switching device 100 shown in fig. 1, in which case, the connection mode of the gas-liquid separator in the system is: the outlet end of the gas-liquid separator is connected with the inlet end of the compression mechanism 1, and the inlet end of the gas-liquid separator is connected with a sixty-five pipeline 65 through a sixty-third pipeline 63. During operation, the function of vapour and liquid separator is to separate the refrigerant liquid in the suction gas of compression mechanism 1, avoids producing the liquid hammer.
The following description is an example of an application of the three-way refrigerant flow direction conversion device 100 shown in fig. 1 of the present invention to an air source heat pump air conditioner having a cooling function and a heating function.
Example 1
As shown in fig. 2, the present embodiment is an air source heat pump air conditioning equipment capable of continuously supplying heat and defrosting, and is used in the occasions with the demands of heating in winter and cooling in summer.
The whole equipment comprises the following components: the system comprises a compression mechanism 1, a first four-way valve 70, a second four-way valve 80, a first throttling mechanism 6, a second throttling mechanism 7, a third throttling mechanism 8, a first outdoor heat exchanger 4, a second outdoor heat exchanger 5, a user heat exchanger 3 and a flow direction control valve 12.
The first throttle mechanism 6, the second throttle mechanism 7, and the third throttle mechanism 8 are electronic expansion valves. The flow direction control valve 12 is a solenoid valve, particularly of the normally open type, the valve body of which is usually of copper or stainless steel.
The air source heat pump air conditioning equipment can realize two functions of heating and continuous heating and defrosting in the running process in winter.
When the heat pump works normally, the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 are both heat source side heat exchangers and are used as evaporators for absorbing heat from the environment; the user heat exchanger 3 is a user side heat exchanger and serves as a condenser for supplying heat to users.
The workflow under each function is as follows.
(1) Heating function
The compression mechanism 1, the first outdoor heat exchanger 4, the second outdoor heat exchanger 5 and the user heat exchanger 3 all work normally; the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 are used as evaporators for absorbing heat from the environment; the user heat exchanger 3 is used as a condenser for supplying heat to users.
The first throttling mechanism 6 and the second throttling mechanism 7 work normally, are used for throttling, and respectively control the flow of the refrigerant passing through the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5.
The third throttling mechanism 8 is fully opened; the flow direction control valve 12 does not operate.
In operation, a high pressure node 71 of first four-way valve 70 communicates with a common node 72 of first four-way valve 70, and a normally open node 74 of first four-way valve 70 communicates with a low pressure node 73 of first four-way valve 70. A high pressure node 81 of the second four-way valve 80 communicates with a common node 82 of the second four-way valve 80 and a normally open node 84 of the second four-way valve 80 communicates with a low pressure node 83 of the second four-way valve 80.
The working process is as follows: after being discharged from the outlet end of the compression mechanism 1, the refrigerant enters a sixty-th pipeline 60 and is divided into two paths; the first path sequentially passes through a sixteenth pipeline 60, a high-pressure node 71 of a first four-way valve 70, a common node 72 of the first four-way valve 70, a sixteenth pipeline 61, an inlet end of a first check valve 21 and an outlet end of the first check valve 21, and enters a fifty-first pipeline 51;
the second path sequentially passes through a sixteenth pipeline 60, a fifty-ninth pipeline 59, a high-pressure node 81 of a second four-way valve 80, a common node 82 of the second four-way valve 80, a sixteenth pipeline 66, an inlet end of a second one-way valve 22 and an outlet end of the second one-way valve 22 and also enters a fifty-first pipeline 51;
the two paths are mixed in a fifty-first pipeline 51, enter a user heat exchanger 3 and supply heat to a user, refrigerant gas in the user heat exchanger is changed into liquid after releasing heat, and the refrigerant liquid enters a fifty-fourth pipeline 54 through a third throttling mechanism 8 after coming out of the user heat exchanger 3 and is divided into two paths; the first path sequentially passes through the first throttling mechanism 6, the first outdoor heat exchanger 4, the sixty-fourth pipeline 64, the normally open node 74 of the first four-way valve 70 and the low-pressure node 73 of the first four-way valve 70, and enters the sixty-fifth pipeline 65; the other path of the refrigerant passes through a second throttling mechanism 7, a second outdoor heat exchanger 5, a sixty-seventh pipeline 67, a normally open node 84 of a second four-way valve 80 and a low-pressure node 83 of the second four-way valve 80 in sequence and also enters a sixty-fifth pipeline 65; the two paths are mixed in a sixty-five pipeline 65, then return to the inlet end of the compression mechanism 1 through a sixty-three pipeline 63, enter the compression mechanism 1 and are compressed again, and a cycle is completed.
(2) Continuous heating and defrosting functions
When the outdoor heat exchanger works under the function, the flow direction control valve 12 is closed, the user heat exchanger 3 works normally to supply heat for users, the two groups of outdoor heat exchangers alternately defrost, and the working processes are respectively as follows.
1) When the first outdoor heat exchanger 4 is defrosted, the second outdoor heat exchanger 5 operates normally to absorb heat from the outdoor air
At this time, the first throttling mechanism 6 and the third throttling mechanism 8 are fully opened, and the second throttling mechanism 7 works normally; the second four-way valve 80 is not operated and still maintains the state during the heating function;
the first four-way valve 70 is switched, and the communication relationship among the four nodes is as follows: the high pressure node 71 of the first four-way valve 70 communicates with the normally open node 74 of the first four-way valve 70 and the common node 72 of the first four-way valve 70 communicates with the low pressure node 73 of the first four-way valve 70.
The working process is as follows: after being discharged from the outlet end of the compression mechanism 1, the refrigerant enters a sixty-th pipeline 60 and is divided into two paths; the first path sequentially passes through a sixteenth pipeline 60, a high-pressure node 71 of a first four-way valve 70, a normally open node 74 of the first four-way valve 70, a sixteenth pipeline 64, a first outdoor heat exchanger 4 and a first throttling mechanism 6 and enters a fifty-fourth pipeline 54;
the second path sequentially passes through a sixty-th pipeline 60, a fifty-ninth pipeline 59, a high-pressure node 81 of a second four-way valve 80, a common node 82 of the second four-way valve 80, a sixty-sixth pipeline 66, an inlet end of a second one-way valve 22, an outlet end of the second one-way valve 22 and a fifty-first pipeline 51, enters a user heat exchanger 3 for heating, refrigerant gas is changed into liquid after releasing heat, and the refrigerant liquid passes through a third throttling mechanism 8 and also enters a fifty-fourth pipeline 54 after coming out of the user heat exchanger 3; after being mixed in the fifty-fourth pipeline 54, the two paths sequentially pass through a second throttling mechanism 7, a second outdoor heat exchanger 5, a sixty-seventh pipeline 67, a normally open node 84 of a second four-way valve 80, a low-pressure node 83 of the second four-way valve 80, a sixty-fifth pipeline 65 and a sixty-third pipeline 63; and then returning to the inlet end of the compression mechanism 1, entering the compression mechanism 1 and being compressed again, and completing one cycle.
2) When the second outdoor heat exchanger 5 is defrosted, the first outdoor heat exchanger 4 normally operates to absorb heat from the outdoor air
At this time, the second throttling mechanism 7 and the third throttling mechanism 8 are fully opened, and the first throttling mechanism 6 works normally; the first four-way valve 70 is not operated and still maintains the state during the heating function;
the second four-way valve 80 is switched, and the communication relationship among the four nodes is as follows: the high pressure node 81 of the second four-way valve 80 communicates with the normally open node 84 of the second four-way valve 80, and the common node 82 of the second four-way valve 80 communicates with the low pressure node 83 of the second four-way valve 80.
The working process is as follows: after being discharged from the outlet end of the compression mechanism 1, the refrigerant enters a sixty-th pipeline 60 and is divided into two paths; the first path sequentially passes through a sixty-th pipeline 60, a high-pressure node 71 of a first four-way valve 70, a common node 72 of the first four-way valve 70, a sixty-first pipeline 61, an inlet end of a first check valve 21, an outlet end of the first check valve 21 and a fifty-first pipeline 51, enters a user heat exchanger 3 for heating, refrigerant gas in the user heat exchanger turns into liquid after releasing heat, and the refrigerant liquid passes through a third throttling mechanism 8 and enters a fifty-fourth pipeline 54 after coming out of the user heat exchanger 3; the second path sequentially passes through a sixteenth pipeline 60, a fifty-ninth pipeline 59, a high-pressure node 81 of a second four-way valve 80, a normally open node 84 of the second four-way valve 80, a sixteenth pipeline 67, a second outdoor heat exchanger 5 and a second throttling mechanism 7 and also enters a fifty-fourth pipeline 54; after being mixed in the fifty-fourth pipeline 54, the two paths sequentially pass through the first throttling mechanism 6, the first outdoor heat exchanger 4, the sixty-fourth pipeline 64, the normally open node 74 of the first four-way valve 70, the low-pressure node 73 of the first four-way valve 70, the sixty-fifth pipeline 65 and the sixty-third pipeline 63; and then returning to the inlet end of the compression mechanism 1, entering the compression mechanism 1 and being compressed again, and completing one cycle.
(3) Refrigerating function in summer
The compression mechanism 1, the first outdoor heat exchanger 4, the second outdoor heat exchanger 5 and the user heat exchanger 3 all work normally; the first outdoor heat exchanger 4 and the second outdoor heat exchanger 5 are used as condensers and discharge condensation heat generated by refrigeration to the environment; the user heat exchanger 3 serves as an evaporator to supply cold to the user.
The first throttling mechanism 6 and the second throttling mechanism 7 are fully opened; the third throttling mechanism 8 works normally;
the flow direction control valve 12 is fully opened.
In operation, the high pressure node 71 of the first four-way valve 70 communicates with the normally open node 74 of the first four-way valve 70, and the common node 72 of the first four-way valve 70 communicates with the low pressure node 73 of the first four-way valve 70. The high pressure node 81 of the second four-way valve 80 communicates with the normally open node 84 of the second four-way valve 80, and the common node 82 of the second four-way valve 80 communicates with the low pressure node 83 of the second four-way valve 80.
The working process is as follows: after being discharged from the outlet end of the compression mechanism 1, the refrigerant enters a sixty-th pipeline 60 and is divided into two paths; the first path sequentially passes through a sixteenth pipeline 60, a high-pressure node 71 of a first four-way valve 70, a normally open node 74 of the first four-way valve 70, a sixteenth pipeline 64, a first outdoor heat exchanger 4 and a first throttling mechanism 6 and enters a fifty-fourth pipeline 54;
the second path sequentially passes through a sixteenth pipeline 60, a fifty-ninth pipeline 59, a high-pressure node 81 of a second four-way valve 80, a normally open node 84 of the second four-way valve 80, a sixteenth pipeline 67, a second outdoor heat exchanger 5 and a second throttling mechanism 7 and also enters a fifty-fourth pipeline 54; the two paths are mixed in a fifty-fourth pipeline 54, then sequentially pass through a third throttling mechanism 8, the user heat exchanger 3, a fifty-first pipeline 51 and the flow direction control valve 12, and are divided into two paths;
the first path sequentially passes through the inlet end of the fourth check valve 24, the outlet end of the fourth check valve 24, the sixty-first pipeline 61, the common node 72 of the first four-way valve 70 and the low-pressure node 73 of the first four-way valve 70, and enters the sixty-fifth pipeline 65;
the second path sequentially passes through the inlet end of the third one-way valve 23, the outlet end of the third one-way valve 23, a sixty-sixth pipeline 66, a common node 82 of the second four-way valve 80 and a low-pressure node 83 of the second four-way valve 80 and also enters a sixty-fifth pipeline 65; the two paths are mixed in a sixty-five pipeline 65, then return to the inlet end of the compression mechanism 1 through a sixty-three pipeline 63, enter the compression mechanism 1 and are compressed again, and a cycle is completed.
In the solutions of all the above embodiments of the present invention, any one of the first outdoor heat exchanger 4, the second outdoor heat exchanger 5 or the user heat exchanger 3 may be a refrigerant-air heat exchanger, or a refrigerant-water heat exchanger or other heat exchangers; when the refrigerant-water heat exchanger is used, any one of a positive displacement heat exchanger, a plate heat exchanger, a shell-and-tube heat exchanger, and a double-tube heat exchanger can be used. When any one of the first outdoor heat exchanger 4, the second outdoor heat exchanger 5, or the user heat exchanger 3 is used as a refrigerant-air heat exchanger, a fin-type heat exchanger is generally used, fins of the fin-type heat exchanger are generally made of aluminum or aluminum alloy, and copper materials are also used in some special occasions.
In the solutions of all the above embodiments of the present invention, one or more of the first throttling mechanism 6, the second throttling mechanism 7, and the third throttling mechanism 8, or even all the throttling mechanisms can be replaced by a throttling mechanism having a turn-off function (for example, an electronic expansion valve, the brand of which can be any one of sanhua, dungan, japanese royal, dengfss, and kale, etc.).
Claims (3)
1. The utility model provides a refrigerant three-way flow direction conversion equipment, includes compression mechanism (1), first four-way valve (70), second four-way valve (80), first check valve (21), second check valve (22), characterized by: the refrigerant three-way flow direction conversion device also comprises a flow direction control valve (12), a third one-way valve (23) and a fourth one-way valve (24);
a low-pressure node (73) of the first four-way valve (70) is connected with a low-pressure node (83) of the second four-way valve (80) through a sixty-fifth pipeline (65) sequentially from a high-pressure node (71) of the first four-way valve (70) to a sixty-fifth pipeline (65) between the low-pressure node (73) of the first four-way valve (70) and the low-pressure node (83) of the second four-way valve (80) through a sixty-fifth pipeline (60), an outlet end of the compression mechanism (1), an inlet end of the compression mechanism (1), and a sixty-third pipeline (63), and a high-pressure node (81) of the second four-way valve (80) is connected with the sixty pipeline (60) between the outlet end of the compression mechanism (1) and the high-pressure node (71) of the first four-way valve (70) through a fifty-ninth pipeline (59);
a common node (82) of the second four-way valve (80) is connected with a common node (72) of the first four-way valve (70) through a sixteenth pipeline (66), an inlet end of the second one-way valve (22), an outlet end of the first one-way valve (21), an inlet end of the first one-way valve (21) and a sixteenth pipeline (61) in sequence;
the pipeline between the outlet end of the first check valve (21) and the outlet end of the second check valve (22) is connected with a fifty-first pipeline (51);
a normally open node (74) of the first four-way valve (70) is connected with a sixty-four pipeline (64);
a normally open node (84) of the second four-way valve (80) is connected with a sixty-seventh pipeline (67);
the outlet end of the third one-way valve (23) is connected with a sixty-sixth pipeline (66), and the inlet end of the third one-way valve (23) is connected with a sixty-first pipeline (61) through the inlet end of the fourth one-way valve (24) and the outlet end of the fourth one-way valve (24) in sequence;
one end of the flow direction control valve (12) is connected with a pipeline between the outlet end of the first one-way valve (21) and the outlet end of the second one-way valve (22), and the other end of the flow direction control valve (12) is connected with a pipeline between the inlet end of the third one-way valve (23) and the inlet end of the fourth one-way valve (24).
2. The three-way flow direction switching device of refrigerant according to claim 1, wherein the flow direction control valve (12) is a solenoid valve.
3. The three-way flow direction switching device of refrigerant according to claim 2, wherein the flow direction control valve (12) is a normally open type solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350648.XU CN209877423U (en) | 2019-03-10 | 2019-03-10 | Three-way flow direction conversion device for refrigerant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920350648.XU CN209877423U (en) | 2019-03-10 | 2019-03-10 | Three-way flow direction conversion device for refrigerant |
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| CN209877423U true CN209877423U (en) | 2019-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131928A (en) * | 2019-03-10 | 2019-08-16 | 刘雄 | Three-way flow direction conversion device for refrigerant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131928A (en) * | 2019-03-10 | 2019-08-16 | 刘雄 | Three-way flow direction conversion device for refrigerant |
| CN110131928B (en) * | 2019-03-10 | 2024-08-27 | 刘雄 | Three-way flow direction switching device for refrigerant |
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