CN211400224U - Four-way valve, four-way valve assembly and air conditioner - Google Patents
Four-way valve, four-way valve assembly and air conditioner Download PDFInfo
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- CN211400224U CN211400224U CN202020128115.XU CN202020128115U CN211400224U CN 211400224 U CN211400224 U CN 211400224U CN 202020128115 U CN202020128115 U CN 202020128115U CN 211400224 U CN211400224 U CN 211400224U
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- 238000000034 method Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 10
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Multiple-Way Valves (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model provides a cross valve, cross valve subassembly and air conditioner, cross valve include valve body, slider, D pipe, E pipe, S pipe and C pipe, and D pipe, E pipe, S pipe and C pipe all communicate with the valve body is inside, and the slider setting is in the valve body. A bypass pipe is connected between the D pipe and the S pipe, the first end of the bypass pipe is connected to the circumferential wall of the D pipe, the second end of the bypass pipe is connected to the circumferential wall of the S pipe, and a control valve is arranged on the bypass pipe. The four-way valve can improve the reversing reliability.
Description
Technical Field
The utility model belongs to the technical field of the air conditioning technique and specifically relates to a cross valve, cross valve subassembly and air conditioner are related to.
Background
The electromagnetic four-way reversing valve is called as a four-way valve for short, is an important component of the heat pump type air conditioner, and mainly has the main function of changing the flowing direction of a refrigerant by utilizing the relative motion between a valve core and a valve body, so that the heat pump type air conditioner realizes the switching between a refrigerating mode and a heating mode, realizes the heating and defrosting functions, and meets the requirement of a user on the heating capacity of a unit.
The four-way valve is used as an important functional component in the heat pump type air conditioner, if the four-way valve breaks down, the important function of the air conditioner is invalid, the maintenance operation difficulty and the maintenance cost are increased, the use requirement of a user cannot be met, the use satisfaction of the user is reduced, and the risk of complaint is increased. Therefore, the reversing reliability of the four-way valve is improved, the failure rate after sale is reduced, and the method has very important significance for improving the maintenance cost and the use satisfaction degree of users.
According to statistical analysis, the phenomena of four-way valve failure at present mainly comprise two phenomena:
firstly, liquid impact of a four-way valve: when an outdoor unit of the split heat pump air conditioner or the integral heat pump air conditioner is stood for a long time or is in a low-temperature environment, a four-way valve pipeline is easy to accumulate liquid, so that a large amount of liquid refrigerants are filled from a compressor exhaust port to a four-way valve body.
Secondly, the four-way valve is connected with air: the reversing of the four-way valve mainly reflects the movement of a sliding block in the four-way valve, and the air leakage of the four-way valve (as shown in the state of figure 1) is necessarily existed in the moving process of the sliding block. The high-low pressure difference in the reversing process of the four-way valve is related to the high-low pressure difference in the reversing process of the four-way valve and the lengths of two ends of the sliding block, so that the high-low pressure difference in the reversing process of the four-way valve is balanced, the sliding resistance of the sliding block cannot be overcome, the sliding block is clamped in the middle position of the four-way valve, and the refrigerating and. Under the same pressure difference condition, if the lengths of the two ends of the sliding block are shorter, the air leakage quantity of the four-way valve for reversing is increased, so that the sliding block is clamped at a certain position and cannot be normally reversed; if the length of slider both ends is partially long can make the air entrainment volume partially down, especially under the condition that the high pressure is high partially, can't effectively carry out the pressure release, increase the risk that the cross valve liquid hits, the fixed frequency machine phenomenon is more serious.
Therefore, although the cross gas and liquid hammer of the four-way valve are two fault phenomena, the cross gas and liquid hammer are inseparable, and the research on solving the two faults becomes more important.
Disclosure of Invention
The utility model aims at providing a can improve cross valve of switching-over reliability.
The second objective of the present invention is to provide an air conditioner with the above four-way valve assembly.
A third object of the present invention is to provide a four-way valve assembly capable of improving the reliability of the commutation.
The fourth object of the present invention is to provide an air conditioner with the above four-way valve assembly.
In order to realize the first purpose, the utility model provides a four-way valve, including valve body, slider, D pipe, E pipe, S pipe and C pipe all communicate with the valve body is inside, and the slider setting is in the valve body. A bypass pipe is connected between the D pipe and the S pipe, the first end of the bypass pipe is connected to the circumferential wall of the D pipe, the second end of the bypass pipe is connected to the circumferential wall of the S pipe, and a control valve is arranged on the bypass pipe.
Preferably, the control valve is a solenoid valve or an electronic expansion valve.
In order to achieve the second objective, the utility model provides an air conditioner, including foretell cross valve.
The air conditioner also comprises a compressor, wherein the compressor is provided with an exhaust pipe and an air suction pipe, the pipe D is connected with the exhaust pipe, and the pipe S is connected with the air suction pipe.
The further scheme is that a first pressure sensor is arranged on a pipeline connecting the exhaust pipe and the pipe D, and a second pressure sensor is arranged on a pipeline connecting the air suction pipe and the pipe S.
For realizing the third purpose, the utility model provides a cross valve assembly, including cross valve, high-pressure connecting line and low pressure connecting line, the cross valve includes valve body, slider, D pipe, E pipe, S pipe and C pipe, and D pipe, E pipe, S pipe and C pipe all communicate with the valve body is inside, and the slider setting is in the valve body, and high-pressure connecting line connects the free end at D pipe, and low pressure connecting line connects the free end at S pipe. And a bypass pipe is connected between the D pipe and the S pipe, and a control valve is arranged on the bypass pipe. The high-pressure connecting pipeline is provided with a first pressure sensor, and the low-pressure connecting pipeline is provided with a second pressure sensor.
Preferably, the control valve is a solenoid valve or an electronic expansion valve.
Preferably, the first end of the bypass pipe is connected to the D pipe, and the second end of the bypass pipe is connected to the S pipe.
Preferably, the first end of the bypass pipe is connected to the high-pressure connection pipe, and the connection position of the bypass pipe and the high-pressure connection pipe is closer to the D pipe than the first pressure sensor along the extension direction of the high-pressure connection pipe.
Preferably, the second end of the bypass pipe is connected to the low pressure connection pipe, and the bypass pipe is connected to the low pressure connection pipe at a position closer to the S-pipe than the second pressure sensor in an extending direction of the low pressure connection pipe.
In order to achieve the fourth objective, the present invention provides an air conditioner, which comprises the above four-way valve assembly.
The air conditioner also comprises a compressor, wherein the compressor is provided with an exhaust pipe and an air suction pipe, two ends of the high-pressure connecting pipeline are respectively connected with the exhaust pipe and the D pipe, and two ends of the low-pressure connecting pipeline are respectively connected with the air suction pipe and the S pipe.
The beneficial effects of the utility model are that, increase bypass pipe and control valve between the high-pressure pipeline section (D pipe) of cross valve and low-pressure pipeline section (S pipe), through opening, closing and opening duration of control valve, solve when the problem that cross valve liquid hits appears under the condition that the blast pipe of unit has more liquid refrigerant or high pressure too high. Effectively reduced at the cross valve switching-over in-process, to the impact force of slider, guaranteed the cross valve switching-over reliability and prolonged cross valve life. Therefore, the reversing reliability of the four-way valve is improved, the mode switching can be normally carried out, the maximum capacity of the four-way valve is exerted to realize multiple functions, the unit can effectively realize refrigeration/heating and free switching, the unit can effectively carry out heating or defrosting process (refrigeration), the heat exchange capacity is improved, and the use requirement of a user on the air conditioner is met.
In addition, the on-off and the opening time of the control valve are automatically controlled according to the running pressure of the unit, so that the high-low pressure difference of the four-way valve in reversing is automatically adjusted, the phenomenon that the sliding block cannot overcome the sliding friction force and is clamped due to overlarge air leakage amount in the reversing process of the four-way valve is avoided, and the heating and defrosting functions cannot be realized, so that the reversing success rate and the reliability of the four-way valve are improved, the after-sale failure rate is reduced, and the using satisfaction degree of customers is improved.
Drawings
Fig. 1 is a schematic diagram of a reversing air-crossing state of a conventional four-way valve.
Fig. 2 is a system block diagram of the air conditioner according to the first embodiment of the present invention under the heating condition.
Fig. 3 is a system block diagram of the air conditioner according to the first embodiment of the present invention under the cooling condition.
Fig. 4 is a system block diagram of a second embodiment of the air conditioner of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Four-way valve, four-way valve assembly and first embodiment of air conditioner
Referring to fig. 2 and 3, the air conditioner of the present embodiment is a heat pump air conditioner including a four-way valve assembly, a compressor 3, a controller, an outdoor unit 4, an indoor unit 5, and the like.
The four-way valve assembly comprises a four-way valve 1, a high-pressure connecting pipeline 21 and a low-pressure connecting pipeline 22, wherein a first pressure sensor 23 is arranged on the high-pressure connecting pipeline 21, and a second pressure sensor 24 is arranged on the low-pressure connecting pipeline 22.
The four-way valve 1 includes a valve body 11, a slider 12, a bypass pipe 15, a control valve, a D pipe 13, an E pipe 141, an S pipe 142, and a C pipe 143, the D pipe 13 is disposed on a first side 111 of the valve body 11, the E pipe 141, the S pipe 142, and the C pipe 143 are all disposed on a second side 112 of the valve body 11 opposite to the first side 111, and the S pipe 142 is located between the E pipe 141 and the C pipe 143. The D-pipe 13, the E-pipe 141, the S-pipe 142, and the C-pipe 143 all communicate with the inside of the valve body 11. The D pipe 13 is connected to the discharge pipe 31 of the compressor 3, the E pipe 141 is connected to the heat exchanger 51 of the indoor unit 5, the C pipe 143 is connected to the heat exchanger 41 of the outdoor unit 4, and the S pipe 142 is connected to the suction pipe 32 of the compressor 3 through the gas flow separator 6. The slider 12 is disposed in the valve body 11, the slider 12 is movable between a first position and a second position, and a communicating groove 121 is opened on the slider 12 near the second side 112 of the valve body 11. Under the heating condition, the slider 12 is in the first position, and the S tube 142 and the C tube 143 are communicated through the communication groove 121 of the slider 12; in the cooling condition, the slider 12 is in the second position, and at this time, the E pipe and the S pipe are communicated through the communication groove 121 of the slider 12.
The bypass pipe 15 is connected between the D pipe 13 and the S pipe 142, a first end of the bypass pipe 15 is connected to a peripheral wall of the D pipe 13, a second end of the bypass pipe 15 is connected to a peripheral wall of the S pipe 142, and a control valve is provided on the bypass pipe 15, preferably, the control valve is an electromagnetic valve 16.
Both ends of the high pressure connection pipe 21 are connected to the free end of the D pipe 13 and the exhaust pipe 31, respectively, and both ends of the low pressure connection pipe 22 are connected to the free end of the S pipe 142 and the suction pipe 32, respectively.
After a controller on the heat pump air conditioner receives a starting operation instruction for a period of time, the compressor 3 is started, the first pressure sensor 23 is used for detecting the exhaust pressure of the compressor 3 synchronously and transmitting an exhaust pressure signal to the controller, the second pressure sensor 24 is used for detecting the suction pressure of the compressor 3 and transmitting a suction pressure signal to the controller, the controller calculates the pressure difference between the exhaust pressure and the suction pressure and sends a starting instruction to the electromagnetic valve 16 according to the pressure difference, and in the period of time from the start of the compressor 3 to the reversing of the four-way valve 1, the opening time of the electromagnetic valve 16 can be controlled according to the detected exhaust pressure, and the flow and the pressure of a liquid refrigerant entering the four-way valve.
When the exhaust pressure is too high, the opening time of the electromagnetic valve 16 can be controlled to be prolonged, the flow of the refrigerant entering the bypass pipe 15 from the D pipe 13 is increased, the mixing time of the refrigerant entering the S pipe 142 through the electromagnetic valve 16 is prolonged, the flow and the pressure of the liquid refrigerant entering the four-way valve 1 from the D pipe 13 are further reduced, the hydraulic impact force on the sliding block 12 in the four-way valve 1 is reduced, and the risk of liquid impact caused by reversing the four-way valve 1 is reduced. The normal reversing of the four-way valve 1 is ensured, and the reversing reliability of the four-way valve 1 is improved. The refrigerant mixed through the S-pipe 142 then re-enters the air-conditioner suction pipe 32, and normal system circulation continues.
When the heat pump air conditioner is ready to enter a defrosting function after heating operation, when the four-way valve 1 receives a reversing signal sent by the controller, the first pressure sensor 23 detects the exhaust pressure of the compressor 3 and transmits an exhaust pressure signal to the controller, the second pressure sensor 24 detects the suction pressure of the compressor 3 and transmits a suction pressure signal to the controller, and the controller calculates the pressure difference between the exhaust pressure and the suction pressure and sends an action command to the electromagnetic valve 16 according to the pressure difference to control the opening and closing of the electromagnetic valve 16 and maintain time, so that the air leakage in the reversing process of the four-way valve 1 is adjusted.
When the pressure difference before the four-way valve 1 is reversed is too large, the opening time of the electromagnetic valve 16 can be prolonged, the flow of the refrigerant entering the bypass pipe 15 from the D pipe 13 is increased, the time for the refrigerant entering the S pipe 142 through the electromagnetic valve 16 is prolonged, the pressure directly entering the valve body 11 from the D pipe 13 is gradually reduced, the high-pressure difference and the low-pressure difference during the reversing of the four-way valve 1 are further reduced, the speed of the gas quantity crosstalk of the refrigerant at two ends of the sliding block 12 in the reversing process of the four-way valve 1 is reduced, the pressure applied to the sliding block 12 in the four-way valve 1 is reduced, and therefore the friction force during the movement of. The refrigerant mixed through the S-pipe 142 then re-enters the suction pipe 32 of the compressor 3, and continues the normal system cycle.
When the pressure difference before the four-way valve 1 is reversed is too small, the opening time of the electromagnetic valve 16 can be reduced, the flow of the refrigerant entering the bypass pipe 15 from the D pipe 13 is reduced, the time for the refrigerant entering the S pipe 142 through the electromagnetic valve 16 is shortened, the pressure directly entering the valve body 11 from the four-way valve 1 is gradually increased, the high-pressure difference and the low-pressure difference during the reversing of the four-way valve 1 are further improved, the flow of the reversing process of the four-way valve 1 is improved, and the phenomenon that the refrigerant at two ends of the sliding block 12 cannot overcome the friction force during the movement of the sliding block 12 to be blocked after leaking and mixing the air due to the too small flow of the refrigerant entering the four-way valve 1 and the air. The refrigerant mixed through the S-pipe 142 then re-enters the suction pipe 32 of the compressor 3, and continues the normal system cycle.
Four-way valve, four-way valve assembly and second embodiment of air conditioner
As descriptions of the second embodiment of the four-way valve, the four-way valve assembly, and the air conditioner of the present invention, only differences from the first embodiment of the air conditioner, the four-way valve assembly, and the four-way valve are described below.
Referring to fig. 4, the first end of the bypass pipe 215 is connected to the high pressure connection pipe 221, and a connection position a1 of the bypass pipe 215 and the high pressure connection pipe 221 is closer to the D-pipe 213 than the first pressure sensor 223 along the extension direction of the high pressure connection pipe 221. That is, the first pressure sensor 223 is located on the upstream side of the connection position a1 in the flow direction of the refrigerant on the high-pressure connection pipe 221.
The second end of the bypass pipe 215 is connected to the low-pressure connection pipe 222, and a connection position a2 of the bypass pipe 215 and the low-pressure connection pipe 222 is closer to the S pipe 2142 than the second pressure sensor 224 in the extending direction of the low-pressure connection pipe 222. That is, the second pressure sensor 224 is located on the downstream side of the connection position a2 in the flow direction of the refrigerant on the low-pressure connection line 222.
Therefore, a bypass pipe and an electromagnetic valve are added between a D pipe and an S pipe of the four-way valve, the four-way valve can be opened in the reversing process of the four-way valve (such as low-temperature placement or low-temperature start operation), the opening and closing of the electromagnetic valve are automatically controlled, the pressure of a compressor exhaust pipe entering the D pipe of the four-way valve is reduced through experiments, the situation that a slide block of the four-way valve is damaged due to overlarge impact force of high-pressure liquid in the reversing process of the four-way valve is avoided, the risk of liquid impact of the four-way valve is reduced, the reversing reliability of. When the four-way valve realizes the functions of heating, particularly defrosting, the electromagnetic valve switch and the opening time of a bypass are automatically controlled by the four-way valve according to the pressure detected by the air conditioner and the requirements on high-low pressure difference, the air leakage quantity of the four-way valve in the reversing process is effectively ensured, the phenomenon that the four-way valve is blocked due to air leakage is further avoided, the reversing success of the four-way valve is improved, and the use satisfaction of a user is improved.
Further, the control valve may be an electronic expansion valve. The first end of the bypass pipe can also be connected to the free end of the D pipe, the second end of the bypass pipe can also be connected to the free end of the S pipe, and the bypass pipe is directly connected to the four-way valve, so that the timeliness of control valve adjustment can be improved. The above changes also enable the object of the present invention to be achieved.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, and are not intended to limit the scope of the present invention, as those skilled in the art will appreciate that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended to cover all such modifications, equivalents, and improvements as fall within the true spirit and scope of the invention.
Claims (12)
1. The four-way valve comprises a valve body, a sliding block, a D pipe, an E pipe, an S pipe and a C pipe, wherein the D pipe, the E pipe, the S pipe and the C pipe are all communicated with the interior of the valve body, and the sliding block is arranged in the valve body;
the method is characterized in that:
a bypass pipe is connected between the D pipe and the S pipe, a first end of the bypass pipe is connected to the peripheral wall of the D pipe, a second end of the bypass pipe is connected to the peripheral wall of the S pipe, and a control valve is arranged on the bypass pipe.
2. The four-way valve of claim 1, wherein:
the control valve is an electromagnetic valve or an electronic expansion valve.
3. An air conditioner characterized by comprising the four-way valve according to claim 1 or 2.
4. The air conditioner according to claim 3, wherein:
the air conditioner further comprises a compressor, wherein an exhaust pipe and an air suction pipe are arranged on the compressor, the D pipe is connected with the exhaust pipe, and the S pipe is connected with the air suction pipe.
5. The air conditioner according to claim 4, wherein:
and a first pressure sensor is arranged on a pipeline connecting the exhaust pipe and the pipe D, and a second pressure sensor is arranged on a pipeline connecting the air suction pipe and the pipe S.
6. The four-way valve assembly comprises a four-way valve, a high-pressure connecting pipeline and a low-pressure connecting pipeline, the four-way valve comprises a valve body, a sliding block, a D pipe, an E pipe, an S pipe and a C pipe, the D pipe, the E pipe, the S pipe and the C pipe are all communicated with the interior of the valve body, the sliding block is arranged in the valve body, the high-pressure connecting pipeline is connected to the free end of the D pipe, and the low-pressure connecting pipeline is connected to the free end of the S pipe;
the method is characterized in that:
a bypass pipe is connected between the D pipe and the S pipe, and a control valve is arranged on the bypass pipe;
the high-pressure connecting pipeline is provided with a first pressure sensor, and the low-pressure connecting pipeline is provided with a second pressure sensor.
7. The four-way valve assembly of claim 6, wherein:
the control valve is an electromagnetic valve or an electronic expansion valve.
8. The four-way valve assembly of claim 6 or 7, wherein:
and the first end of the bypass pipe is connected to the D pipe, and the second end of the bypass pipe is connected to the S pipe.
9. The four-way valve assembly of claim 6 or 7, wherein:
the first end of the bypass pipe is connected to the high-pressure connecting pipeline, and the connection position of the bypass pipe and the high-pressure connecting pipeline is closer to the D pipe than the first pressure sensor along the extension direction of the high-pressure connecting pipeline.
10. The four-way valve assembly of claim 6 or 7, wherein:
the second end of the bypass pipe is connected to the low-pressure connecting pipe, and the connection position of the bypass pipe and the low-pressure connecting pipe is closer to the S pipe than the second pressure sensor along the extension direction of the low-pressure connecting pipe.
11. An air conditioner characterized by comprising the four-way valve assembly according to any one of claims 6 to 10.
12. The air conditioner according to claim 11, wherein:
the air conditioner further comprises a compressor, wherein an exhaust pipe and an air suction pipe are arranged on the compressor, two ends of the high-pressure connecting pipeline are respectively connected with the exhaust pipe and the D pipe, and two ends of the low-pressure connecting pipeline are respectively connected with the air suction pipe and the S pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020128115.XU CN211400224U (en) | 2020-01-19 | 2020-01-19 | Four-way valve, four-way valve assembly and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020128115.XU CN211400224U (en) | 2020-01-19 | 2020-01-19 | Four-way valve, four-way valve assembly and air conditioner |
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| CN211400224U true CN211400224U (en) | 2020-09-01 |
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| CN202020128115.XU Active CN211400224U (en) | 2020-01-19 | 2020-01-19 | Four-way valve, four-way valve assembly and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156652A (en) * | 2020-01-19 | 2020-05-15 | 珠海格力电器股份有限公司 | Four-way valve, four-way valve assembly, air conditioner and working method of air conditioner |
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2020
- 2020-01-19 CN CN202020128115.XU patent/CN211400224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156652A (en) * | 2020-01-19 | 2020-05-15 | 珠海格力电器股份有限公司 | Four-way valve, four-way valve assembly, air conditioner and working method of air conditioner |
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