CN115854075A - Control valve, air conditioner and control method of air conditioner - Google Patents

Abstract

The invention provides a control valve, an air conditioner and a control method of the air conditioner, wherein the control valve comprises a shell with four ports, a rotary table is arranged in the shell, four independent flow passages are arranged on the rotary table, when the rotary table is at a first position, the first flow passage is respectively communicated with the first port and the third port, the second flow passage is respectively communicated with the second port and the fourth port, when the rotary table is at a second position, the third flow passage is respectively communicated with the first port and the fourth port, and the fourth flow passage is respectively communicated with the second port and the third port. After the control valve is installed in the air conditioner, no matter the air conditioner is used for refrigerating or heating, the driving module can be cooled by the high-pressure refrigerant before throttling through the reversing action of the control valve, and therefore condensation on the driving module is avoided. Compared with the prior art, the air conditioner has the advantages that the two throttling elements or the four one-way valves are arranged in the air conditioner to ensure that the high-pressure refrigerant cools the driving module, and the control valve can enable the structure of the air conditioner to be simpler and lower in cost.

Description

Control valve, air conditioner and control method of air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to a control valve, an air conditioner and a control method of the air conditioner.

Background

Direct current frequency conversion is a development trend of air conditioners, but the existing commercial air conditioner has high power and large heat productivity of a driving module, and the traditional air cooling heat dissipation cannot meet the requirements and all the air cooling heat dissipation routes of the driving module are driven by a refrigerant. The refrigerant heat dissipation is to link to each other air conditioning system's refrigerant pipe and drive module, utilizes the refrigerant flow to take away the heat that drive module sent, but the problem that exists is in case the refrigerant temperature is too low, produces the condensation on drive module easily, and has a large amount of electrical components on the drive module, produces the condensation and probably influences drive module's reliability. Therefore, the state of the refrigerant flowing through the heat dissipation module needs to be controlled in the conventional air conditioning system, and the refrigerant flowing through the heat dissipation module is in a high-pressure state before throttling no matter in a refrigeration mode or a heating mode, so that the temperature of the refrigerant is higher than the ambient temperature and the condensation risk cannot occur. In order to ensure that the refrigerant is in a high-pressure state before throttling, the general method is to adopt four check valves for rectification, as shown in fig. 5; or two electronic expansion valves are adopted to respectively throttle to ensure that the refrigerant can be in a high-pressure state no matter in a refrigeration mode or a heating mode _， As shown in fig. 6. However, the conventional four check valves or two electronic expansion valve systems have the problems of complex structure, high cost and the like, and a simple reversing valve structure is urgently needed to be researched, so that the air conditioning system can be used in a cooling mode or a heating modeDuring operation, the refrigerant flowing through the heat dissipation part of the driving module is a high-pressure refrigerant flowing towards one direction and before throttling, so that the driving module is ensured not to have condensation risk.

Disclosure of Invention

Therefore, the invention provides a control valve which can overcome the defects that in order to ensure that a refrigerant flowing through a driving module is in a high-pressure state before throttling, four one-way valves are adopted for rectification, or two electronic expansion valves are adopted for combination, so that an air conditioning system is complex in structure and high in cost.

In order to solve the above problem, the present invention provides a control valve including: the rotary disc type air conditioner comprises a shell, wherein the shell is provided with a first port, a second port, a third port and a fourth port, a rotary disc is arranged in the shell, a first flow passage, a second flow passage, a third flow passage and a fourth flow passage which are independent of each other are arranged on the rotary disc, the rotary disc can be driven to rotate and switch between a first position and a second position, when the rotary disc is located at the first position, two ends of the first flow passage are communicated with the first port and the third port respectively, two ends of the second flow passage are communicated with the second port and the fourth port respectively, when the rotary disc is located at the second position, two ends of the third flow passage are communicated with the first port and the fourth port respectively, and two ends of the fourth flow passage are communicated with the second port and the third port respectively.

In some embodiments, the first flow channel does not intersect the second flow channel, and the third flow channel intersects the fourth flow channel.

In some embodiments, two circumferential limiting structures are arranged on the inner wall of the housing at intervals, a limiting matching structure is arranged on the turntable and located between the two circumferential limiting structures, and in the rotating process of the turntable, the limiting matching structure abuts against one of the circumferential limiting structures to form the first position, and the limiting matching structure abuts against the other circumferential limiting structure to form the second position.

In some embodiments, the carousel is circular in cross-section and the housing is annular in cross-section, the annular shape having an inner circle, the circle being concentric with the inner circle.

In some embodiments, the device further comprises a motor, and an output shaft of the motor is connected with the rotating disc.

The invention also provides an air conditioner which comprises the control valve.

In some embodiments, the air conditioner further comprises a driving module, wherein the driving module is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the third port, and the liquid outlet is communicated with the fourth port.

In some embodiments, a flow path between the liquid outlet and the fourth port of the drive module is provided with a throttling element.

The invention also provides a control method of the air conditioner, which is used for controlling the operation of the air conditioner, and when the air conditioner operates in a refrigeration mode, the turntable is controlled to be positioned at the first position; and when the air conditioner runs in a heating mode, controlling the turntable to be at the second position.

The invention provides a control valve, an air conditioner and a control method of the air conditioner, when a rotary disc of the control valve is positioned at a first position, a refrigerant can flow in from a first port of the control valve and then flow out from a third port through a first flow channel, and when the refrigerant flows back again, the refrigerant can flow in from a fourth port and finally flow out from a second port through a second flow channel; when the turntable is located at the second position, the refrigerant can flow in from the second port and flow out from the third port through the fourth flow channel, and when the refrigerant flows back again, the refrigerant can flow in from the fourth port and flow out from the first port through the third flow channel, so that the flow direction of the refrigerant can be changed by the control valve. After the control valve is installed in the air conditioner, no matter the air conditioner is in a refrigerating mode or a heating mode, the driving module can be cooled by a high-pressure refrigerant before throttling through the reversing action of the control valve, and therefore condensation on the driving module is avoided. Simultaneously, compare prior art and guarantee that the high-pressure refrigerant cools off drive module through set up two throttling element or four check valves in the air conditioner, adopt the control valve of this application can make the structure of air conditioner simpler, the cost is lower.

Drawings

FIG. 1 is a schematic illustration of a control valve according to an embodiment of the present invention in a first position;

FIG. 2 is a schematic illustration of the control valve of an embodiment of the present invention in a second position;

FIG. 3 is a schematic view of a control valve according to an embodiment of the present invention in a first position for use in an air conditioner;

FIG. 4 is a schematic view of a control valve according to an embodiment of the present invention in a second position for use in an air conditioner;

FIG. 5 is a schematic view of a prior art device for preventing condensation on a drive module through four check valves;

fig. 6 is a schematic view of the prior art for preventing condensation on the drive module by two throttling elements.

The reference numbers are given as:

1. a housing; 2. a first port; 3. a second port; 4. a third port; 5. a fourth port; 6. a turntable; 7. a first flow passage; 8. a second flow passage; 9. a third flow path; 10. a fourth flow path; 11. a circumferential limiting structure; 12. a limit matching structure; 13. a drive module; 14. a throttling element; 15. a high-pressure liquid storage tank; 16. a one-way valve.

Detailed Description

Referring to fig. 1 to 6 in combination, according to an embodiment of the present invention, there is provided a control valve including: the flow path structure comprises a shell 1, wherein the shell 1 is provided with a first port 2, a second port 3, a third port 4 and a fourth port 5, a rotating disc 6 is arranged in the shell 1, a first flow path 7, a second flow path 8, a third flow path 9 and a fourth flow path 10 which are independent of each other are arranged on the rotating disc 6, and the four flow paths can be constructed on the rotating disc 6 or four conduits are arranged on the rotating disc 6 to form four flow paths. The rotary disc 6 can be driven to rotate and switch between a first position and a second position, when the rotary disc 6 is located at the first position, two ends of the first flow channel 7 are respectively communicated with the first port 2 and the third port 4, two ends of the second flow channel 8 are respectively communicated with the second port 3 and the fourth port 5, when the rotary disc 6 is located at the second position, two ends of the third flow channel 9 are respectively communicated with the first port 2 and the fourth port 5, and two ends of the fourth flow channel 10 are respectively communicated with the second port 3 and the third port 4. Among this technical scheme, carousel 6 is equivalent to the case of control valve, when carousel 6 rotatory switching between primary importance and second place, can make the refrigerant transform flow direction in the admission control valve, the case of this application is the mode that the rotation switches promptly, compares the slide valve core in prior art and has simple structure, the advantage of convenient control. When the rotating disc 6 is at the first position, the refrigerant can flow in from the first port 2, flow out from the third port 4 through the first flow channel 7, flow into the fourth port 5 when the refrigerant flows back again, and flow out from the second port 3 through the second flow channel 8; when the rotary disc 6 is at the second position, the refrigerant can flow in from the second port 3, and then flow out from the third port 4 through the fourth flow channel 10, and when the refrigerant flows back again, the refrigerant can flow in the fourth port 5, and finally flow out from the first port 2 through the third flow channel 9, so that the refrigerant flow direction can be changed by the control valve. After the control valve is installed in the air conditioner, no matter the air conditioner is in a cooling mode or a heating mode, the driving module 13 can be cooled by the high-pressure refrigerant before throttling through the reversing effect of the control valve, and therefore condensation on the driving module 13 is avoided. Simultaneously, compare prior art and guarantee that the high pressure refrigerant cools off drive module 13 through setting up two throttling element 14 or four check valves 16 in the air conditioner, adopt the control valve of this application can make the structure of air conditioner simpler, the cost is lower.

Referring to fig. 1 and 2 in combination, the first port 2 and the third port 4 are opposed to each other, and the second port 3 and the fourth port 5 are opposed to each other. When the rotary disc 6 is in the first position, the first flow passage 7 needs to communicate the first port 2 with the third port 4, and the second flow passage 8 needs to communicate the second port 3 with the fourth port 5, so that the first flow passage 7 and the second flow passage 8 do not intersect for optimal selection, and in this case the required length of the first flow passage 7 and the second flow passage 8 is the shortest. When the turn plate 6 is in the second position, the flow direction of the refrigerant needs to be changed compared to when the turn plate 6 is in the first position, and the third flow passage 9 and the fourth flow passage 10 intersect with each other in the simplest manner to change the flow direction of the refrigerant.

Specifically, the turntable 6 is driven by a motor to rotate. The motor may be arranged inside the housing 1 of the control valve or outside the housing 1. When the motor is positioned in the shell 1, the output shaft of the motor is directly connected with the rotating disc 6; when the motor is arranged outside the shell 1, the output shaft of the motor penetrates through the shell 1 and is connected with the rotating disc 6.

Referring to fig. 1 and 2 in combination, two circumferential limiting structures 11 are arranged on the inner wall of the housing 1, a limiting matching structure 12 is arranged on the turntable 6, the limiting matching structure 12 is located between the two circumferential limiting structures 11, in the rotating process of the turntable 6, the limiting matching structure 12 abuts against one of the circumferential limiting structures 11 to form a first position, and the limiting matching structure 12 abuts against the other circumferential limiting structure 11 to form a second position. The circumferential limiting structure 11 is a stop block, and the limiting matching structure 12 is a baffle. When the baffle on the rotary table 6 abuts against any one of the two stop blocks 11, the rotary table 6 can be ensured to be in the first position or the second position, so that the inlet and the outlet of the flow channel are ensured to be accurately butted with the port of the shell. Wherein, when carousel 6 switches between primary importance and second position, 6 pivoted angles of carousel are 90, make carousel 6 only need rotate less angle can realize the switching between primary importance and second position like this, also conveniently set for the angle of rotation that makes a round trip to the motor simultaneously.

In a specific embodiment, the cross section of the rotating disc 6 is circular, the cross section of the shell 1 is annular, the annular shape has an inner circle, and the circle of the cross section of the rotating disc 6 is concentric with the inner circle of the cross section of the shell 1. Make carousel 6 and casing 1 can carry out accurate cooperation like this, under the minimum condition in the outer edge of guaranteeing carousel 6 and the inner wall clearance of casing 1, make carousel 6 can smooth rotation in casing 1.

According to an embodiment of the invention, an air conditioner is also provided, which comprises the control valve.

Referring to fig. 3 and 4, the air conditioner further includes a driving module 13, the driving module 13 has a liquid inlet and a liquid outlet, the liquid inlet is communicated with the third port 4, and the liquid outlet is communicated with the fourth port 5. The control valve has a reversing function, and no matter the air conditioner is in a refrigerating mode or a heating mode, the refrigerant flowing out of the third port 4 is the high-pressure refrigerant before throttling all the time, so when the refrigerant flowing out of the third port 4 cools the driving module 13, condensation on the driving module 13 can be prevented.

In this embodiment, a flow path between the liquid outlet of the driving module 13 and the fourth port 5 is provided with a throttling element 14, so that the high-pressure refrigerant can be throttled immediately after the driving module 13 is cooled by the high-pressure refrigerant.

According to an embodiment of the present invention, there is also provided a control method of an air conditioner, for controlling the operation of the air conditioner. The air conditioner also comprises a first heat exchanger and a second heat exchanger, and the control valve is arranged between the first heat exchanger and the second heat exchanger. When the air conditioner operates in a refrigeration mode, the rotary disc 6 is controlled to be at a first position, and a refrigerant flowing out of the first heat exchanger sequentially flows through the first port 2, the first flow channel 7, the third port 4, the driving module 13, the throttling element 14, the fourth port 5, the second flow channel 8, the second port 3 and the second heat exchanger; when the air conditioner operates in a heating mode, the rotating disc 6 is controlled to be at the second position, and the refrigerant flowing out of the second heat exchanger sequentially flows through the second port 3, the fourth flow channel 10, the third port 4, the driving module 13, the throttling element 14, the fourth port 5, the third flow channel 9, the first port 2 and the first heat exchanger. According to the two refrigerant flow paths, no matter the air conditioner is in a refrigerating mode or a heating mode, the refrigerant flows out of the third port 4 all the time to cool the driving module 13, and the refrigerant after cooling can flow into the throttling element 14 to be throttled, so that the driving module 13 can be cooled by the high-pressure refrigerant before throttling only by installing a single control valve in the air conditioner, the number of parts required in the air conditioner is reduced, and the manufacturing cost of the air conditioner is reduced.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (9)

1. The control valve is characterized by comprising a shell (1), wherein the shell (1) is provided with a first port (2), a second port (3), a third port (4) and a fourth port (5), a rotary disc (6) is arranged in the shell (1), a first flow channel (7), a second flow channel (8), a third flow channel (9) and a fourth flow channel (10) which are independent of each other are arranged on the rotary disc (6), the rotary disc (6) can be driven to rotate and switch between a first position and a second position, when the rotary disc (6) is located at the first position, two ends of the first flow channel (7) are communicated with the first port (2) and the third port (4) respectively, two ends of the second flow channel (8) are communicated with the second port (3) and the fourth port (5) respectively, when the rotary disc (6) is located at the second position, two ends of the third flow channel (9) are communicated with the first port (2) and the fourth port (5) respectively, and two ends of the fourth flow channel (10) are communicated with the second port (4) and the fourth port (10) respectively.

2. A control valve according to claim 1, characterized in that the first flow channel (7) does not intersect the second flow channel (8), and the third flow channel (9) intersects the fourth flow channel (10).

3. The control valve according to claim 1, characterized in that two spaced circumferential limit structures (11) are arranged on the inner wall of the housing (1), a limit fitting structure (12) is arranged on the rotary disk (6), the limit fitting structure (12) is located between the two circumferential limit structures (11), during the rotation of the rotary disk (6), the limit fitting structure (12) abuts against one of the circumferential limit structures (11) to form the first position, and the limit fitting structure (12) abuts against the other circumferential limit structure (11) to form the second position.

4. A control valve according to claim 1, characterized in that the cross-section of the rotary disc (6) is circular and the cross-section of the housing (1) is ring-shaped, the ring-shape having an inner circle, the circle being concentric with the inner circle.

5. A control valve according to claim 1, characterized in that it further comprises an electric motor, the output shaft of which is connected to the turntable (6).

6. An air conditioner characterized by comprising the control valve according to any one of claims 1 to 5.

7. The air conditioner as claimed in claim 6, further comprising a driving module (13), wherein the driving module (13) has a liquid inlet and a liquid outlet, the liquid inlet is communicated with the third port (4), and the liquid outlet is communicated with the fourth port (5).

8. Air conditioner according to claim 7, characterized in that a throttling element (14) is arranged in the flow path between the liquid outlet and the fourth port (5) of the drive module (13).

9. A control method of an air conditioner for controlling the operation of the air conditioner according to any one of claims 6 to 8, wherein the rotary plate (6) is controlled to be in the first position when the air conditioner is operated in a cooling mode; and when the air conditioner runs in a heating mode, controlling the rotary disc (6) to be at the second position.

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