CN110805952B - Rotatable stop valve, air conditioning system and control method of air conditioning system - Google Patents
Rotatable stop valve, air conditioning system and control method of air conditioning system Download PDFInfo
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- CN110805952B CN110805952B CN201911175215.6A CN201911175215A CN110805952B CN 110805952 B CN110805952 B CN 110805952B CN 201911175215 A CN201911175215 A CN 201911175215A CN 110805952 B CN110805952 B CN 110805952B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 137
- 238000011084 recovery Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 15
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/40—Fluid line arrangements
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Multiple-Way Valves (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a rotatable stop valve, an air conditioning system and a control method of the air conditioning system, wherein the stop valve comprises: the valve body is used for communicating the pipeline; and the pipeline switching device is rotatably arranged on the valve body and is used for switching the stop valve to be switched on or off by rotating the pipeline switching device. The stop valve is switched on or off by rotating the pipeline switching device, and the two stop valves are arranged in the system, and the indoor units are respectively arranged between the two stop valves, so that a liquid storage tank can be omitted, the cost is reduced, and low-refrigerant filling is realized.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a rotatable stop valve, an air conditioning system and a control method of the air conditioning system.
Background
With the increasing influence of greenhouse effect on environment and worse climate, the demands of consumers on refrigeration and air conditioning are also higher, and the multi-connected air conditioner in the market at present occupies half-wall Jiangshan of the air conditioning market. The existing multi-split external unit is provided with a liquid storage tank for controlling the refrigerant quantity in the whole system, when the quantity of the running internal units is large, the liquid storage tank obtains information to release the stored refrigerant, when the quantity of the running internal units is small, the liquid storage tank obtains information to start storing the refrigerant in the system, but the addition of the liquid storage tank in a pipeline increases the system cost.
Disclosure of Invention
The invention discloses a rotatable stop valve, an air conditioning system and a control method of the air conditioning system, and solves the problem that the cost of the system is increased when a liquid storage tank is added in the prior art.
According to one aspect of the present invention, a shut-off valve is disclosed, comprising: the valve body is used for communicating the pipeline; and the pipeline switching device is rotatably arranged on the valve body and is used for switching the stop valve to be switched on or off by rotating the pipeline switching device.
Further, the valve body is provided with a first interface and a second interface which are communicated with each other; the pipeline switching device is rotatably arranged at the second interface position of the valve body, a third interface is arranged on the pipeline switching device, and the pipeline switching device is provided with a first working position and a second working position; in the first working position, the third interface is communicated with the second interface, and the stop valve is communicated; in a second working position, the third interface is dislocated from the second interface and disconnected, and the stop valve is closed.
Further, the number of the second interfaces is multiple, the number of the third interfaces is multiple, and in the first working position, part of the third interfaces are communicated with part of the second interfaces.
Further, a fourth interface is further arranged on the pipeline switching device, and the pipeline switching device is further provided with a third working position; in the third working position, the fourth interface is communicated with the second interface, meanwhile, the third interface is staggered with the second interface and is disconnected, and the stop valve is connected.
Further, in the second working position, the third interface and the fourth interface are dislocated and disconnected from the second interface at the same time, and the stop valve is closed.
Further, the stop valve further includes: and the stepping motor is in driving connection with the pipeline switching device.
Further, the pipeline switching device is manually controlled.
According to a second aspect of the present invention, an air conditioning system is also disclosed, comprising the above-mentioned shut-off valve.
Further, the refrigerant compression cycle is further included, and the refrigerant compression cycle includes: the indoor unit is arranged between the first stop valve and the second stop valve.
Further, the indoor unit comprises a plurality of indoor units, and a plurality of indoor units are arranged in parallel.
Further, the refrigerant compression cycle is further included, and the refrigerant compression cycle includes: the indoor unit comprises an outdoor unit, a first indoor unit, a second indoor unit, a first stop valve and a second stop valve, wherein the first indoor unit is arranged between the first stop valve and the second stop valve, and the second indoor unit is arranged between the first stop valve and the second stop valve; the first stop valve includes: the first valve body is provided with a first refrigerant port and a second refrigerant port which are communicated with each other, and the first refrigerant port is communicated with the first end of the outdoor unit; the first pipeline switching device is rotatably arranged at the position of the second refrigerant port of the first valve body, a third refrigerant port and a fourth refrigerant port are arranged on the first pipeline switching device, the third refrigerant port is communicated with the first end of the first indoor unit, and the fourth refrigerant port is communicated with the first end of the second indoor unit; the second shut-off valve includes: the second valve body is provided with a fifth refrigerant port and a sixth refrigerant port which are communicated with each other, and the fifth refrigerant port is communicated with the second end of the outdoor unit; the second pipeline switching device is rotatably arranged at the position of a sixth refrigerant port of the second valve body, a seventh refrigerant port and an eighth refrigerant port are arranged on the second pipeline switching device, the seventh refrigerant port is communicated with the second end of the first indoor unit, and the eighth refrigerant port is communicated with the second end of the second indoor unit.
Further, the air conditioning system is provided with a first indoor unit conduction state, a refrigerant recovery state and a second indoor unit conduction state; in the on state of the first indoor unit, the second refrigerant port is communicated with the third refrigerant port, and the second refrigerant port is staggered and disconnected with the fourth refrigerant port at the same time; in the state of recovering the refrigerant, the second refrigerant port is staggered and disconnected with the third refrigerant port and the fourth refrigerant port at the same time; and in the on state of the second indoor unit, the sixth refrigerant port is communicated with the seventh refrigerant port, and meanwhile, the second refrigerant port and the eighth refrigerant port are staggered and disconnected.
According to a third aspect of the present invention, there is also disclosed a control method for controlling the above-mentioned air conditioning system, comprising the steps of: step S10: switching the air conditioning system to a refrigerant recovery mode, starting a compressor, and closing a first stop valve; step S20: judging whether the refrigerant in the system is recovered to the outdoor unit or not; step S30: and when the judging structure is yes, closing the second stop valve and the compressor.
When the stop valve is used, the stop valves are respectively arranged at two ends of the indoor unit, when the indoor unit is powered on, the stop valves are all in a conducting state, the unit normally carries out refrigeration, when the unit is powered off, the unit enters a refrigerant recovery state, the stop valve at one end of the indoor unit is firstly closed to form an open circuit, at the moment, the unit compressor continuously operates, the refrigerant in the system is forcedly recovered into the outdoor unit, after recovery is finished, the stop valve at the other side of the indoor unit is closed, at the moment, all the refrigerant is stored in the outdoor unit, and therefore, by arranging two stop valves and respectively arranging the indoor unit between the two stop valves, a liquid storage tank can be canceled, the cost is reduced, and low refrigerant filling is realized.
Drawings
FIG. 1 is a schematic view of a shut-off valve according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioning system according to an embodiment of the present invention;
FIG. 3 is an assembly view of a stepper motor according to an embodiment of the present invention;
legend: 10. a valve body; 11. a first interface; 12. a second interface; 20. a pipeline switching device; 21. a third interface; 22. a fourth interface; 30. an outdoor unit; 40. a first indoor unit; 50. a second indoor unit; 60. a first stop valve; 61. a first valve body; 611. a first refrigerant port; 612. a second refrigerant port; 62. a first pipeline switching device; 621. a third refrigerant port; 622. a fourth refrigerant port; 70. a second shut-off valve; 71. a second valve body; 711. a fifth refrigerant port; 712. a sixth refrigerant port; 72. a second pipeline switching device; 721. a seventh refrigerant port; 722. an eighth refrigerant port; 80. a stepper motor.
Detailed Description
The invention is further illustrated, but is not limited to, the following examples.
The existing multi-split external unit is provided with a liquid storage tank for controlling the refrigerant quantity in the whole system, when the quantity of the running internal units is large, the liquid storage tank obtains information to release the stored refrigerant, and when the quantity of the running internal units is small, the liquid storage tank obtains the refrigerant in the information starting storage system. At present, a small room, such as a one-room one-hall room type becomes a main household type of a large city, a single user generally cannot simultaneously start air conditioners of a living room and a bedroom, and the user can choose to install two sets of air conditioners or use a multi-split air conditioner, so that the cost is high.
As shown in fig. 1, according to a first aspect of the present invention, the present invention discloses a shut-off valve comprising: a valve body 10 and a pipeline switching device 20, the valve body 10 being used for communicating a pipeline; the pipe switching device 20 is rotatably provided on the valve body 10, and the shut-off valve is switched on or off by rotating the pipe switching device 20.
It should be noted that, the pipeline switching device 20 of the stop valve of the present invention switches on or off the stop valve by rotating the pipeline switching device 20, when in use, the stop valves are respectively installed at two ends of the indoor unit, when the indoor unit gets a start-up command, the stop valves all enter the on state, the unit normally performs refrigeration, when the unit is shut down, the unit enters the state of recovering the refrigerant, the stop valve at one end of the indoor unit is firstly closed to form an open circuit, at this moment, the compressor of the unit continues to operate, the refrigerant in the system is forcedly recovered into the outdoor unit, and after the recovery is finished, the stop valve at the other side of the indoor unit is closed, at this moment, all the refrigerant is stored in the outdoor unit, so that by setting two stop valves and setting the indoor unit in the middle of the two stop valves, the liquid storage tank can be cancelled, the cost is reduced, and low refrigerant filling is realized.
In the above embodiment, the valve body 10 has the first port 11 and the second port 12 communicating with each other; the pipeline switching device 20 is rotatably arranged at the position of the second connector 12 of the valve body 10, a third connector 21 is arranged on the pipeline switching device 20, and the pipeline switching device 20 has a first working position and a second working position; in the first working position, the third port 21 is communicated with the second port 12, and the stop valve is turned on; in the second operating position, the third connection 21 is offset from the second connection 12 and is disconnected, the shut-off valve is closed, and the line switching device 20 is switched between the first operating position and the second operating position by rotation.
The pipeline switching device 20 of the stop valve is switched between the first working position and the second working position through rotation, and controls the on and off of the stop valve, when the pipeline switching device is used, the stop valve is respectively arranged at two ends of the indoor unit, when the indoor unit is powered on, the stop valve is in an on state, the unit normally carries out refrigeration, when the unit is powered off, the unit enters a refrigerant recovery state, the stop valve at one end of the indoor unit is firstly closed to form an open circuit, at the moment, the compressor of the unit continues to operate, the refrigerant in the system is forcedly recovered into the outdoor unit, and after the recovery is finished, the stop valve at the other end of the indoor unit is closed, and at the moment, all the refrigerant is stored in the outdoor unit, so that by arranging the two stop valves and arranging the indoor unit between the two stop valves, a liquid storage tank can be canceled, the cost is reduced, and low-refrigerant filling is realized.
In the above embodiment, the second interfaces 12 are plural, the third interfaces 21 are plural, and in the first working position, part of the third interfaces 21 communicates with part of the second interfaces 12. The stop valve of the invention can realize 'one-to-many' by arranging a plurality of second interfaces 12 and third interfaces 21, namely, one outdoor unit is matched with a plurality of indoor units for use, so that the installation cost is saved, the third interfaces 21 can be communicated with the second interfaces 12 completely, can be communicated with 1/4, 1/2 or 3/4 of the interface area, and the communication of part of the third interfaces 21 with part of the second interfaces 12 means that one or two of the plurality of third interfaces 21 are communicated with the second interfaces 12.
In the above embodiment, the fourth interface 22 is further provided on the pipe switching device 20, and the pipe switching device 20 further has a third working position; in the third operating position, the fourth interface 22 is in communication with the second interface 12, while the third interface 21 is displaced from the second interface 12 and is open, and the shut-off valve is closed. According to the stop valve, the third interface 21 and the fourth interface 22 are arranged on the pipeline switching device 20, so that the stop valve can be respectively connected with two internal machines through the third interface 21 and the fourth interface 22, and the two internal machines can be controlled to be respectively conducted through the rotation of the pipeline switching device 20, the function of one driving two driving is realized, the liquid storage tank is prevented from being arranged, and the production cost of an air conditioner is reduced.
In the above embodiment, in the second operating position, the third port 21 and the fourth port 22 are simultaneously displaced from and disconnected from the second port 12, and the shut-off valve is closed. The stop valve can disconnect the third port 21 and the fourth port 22 from the second port 12 at the same time, so that the refrigerant is recovered into the outdoor unit, a liquid storage tank is avoided, and the production cost of the air conditioner is reduced.
As shown in fig. 3, in the above embodiment, the shutoff valve further includes: and a stepping motor 80, wherein the stepping motor 80 is in driving connection with the pipeline switching device 20. The stop valve of the invention is provided with the stepping motor 80, so that the stepping motor 80 drives the pipeline switching device 20 to rotate, thereby controlling the on or off of the stop valve, replacing manual operation and improving the adjustment efficiency and convenience.
In another embodiment, not shown, the line switching device 20 is manually controlled, and reliability can be ensured.
As shown in fig. 2, according to a second aspect of the present invention, an air conditioning system is also disclosed, including the above-mentioned shut-off valve.
In the above embodiment, the refrigerant compression cycle is further included, and the refrigerant compression cycle includes: the outdoor unit 30, the indoor unit, the first cut-off valve 60, and the second cut-off valve 70, and the indoor unit is disposed between the first cut-off valve 60 and the second cut-off valve 70.
In the above embodiment, the indoor unit includes a plurality of indoor units, and the plurality of indoor units are arranged in parallel.
As shown in fig. 2, the air conditioning system further includes a refrigerant compression cycle including: the outdoor unit 30, the first indoor unit 40, the second indoor unit 50, the first cut-off valve 60 and the second cut-off valve 70, the first indoor unit 40 is disposed between the first cut-off valve 60 and the second cut-off valve 70, and the second indoor unit 50 is disposed between the first cut-off valve 60 and the second cut-off valve 70; the first shut-off valve 60 includes: a first valve body 61 and a first pipe switching device 62, wherein the first valve body 61 is provided with a first refrigerant port 611 and a second refrigerant port 612 which are communicated with each other, and the first refrigerant port 611 is communicated with a first end of the outdoor unit; the first pipeline switching device 62 is rotatably arranged at the position of the second refrigerant port 612 of the first valve body 61, a third refrigerant port 621 and a fourth refrigerant port 622 are arranged on the first pipeline switching device 62, the third refrigerant port 621 is communicated with the first end of the first indoor unit 40, and the fourth refrigerant port 622 is communicated with the first end of the second indoor unit 50; the second shut-off valve 70 includes: a second valve body 71 and a second pipe switching device 72, wherein the second valve body 71 is provided with a fifth refrigerant port 711 and a sixth refrigerant port 712 which are communicated with each other, and the fifth refrigerant port 711 is communicated with a second end of the outdoor unit; the second pipe switching device 72 is rotatably disposed at the sixth refrigerant port 712 of the second valve body 71, the second pipe switching device 72 is provided with a seventh refrigerant port 721 and an eighth refrigerant port 722, the seventh refrigerant port 721 is in communication with the second end of the first indoor unit 40, and the eighth refrigerant port 722 is in communication with the second end of the second indoor unit 50.
In the above embodiment, the air conditioning system has the first indoor unit 40 on state, the refrigerant recovery state, and the second indoor unit 50 on state; in the on state of the first indoor unit 40, the second refrigerant port 612 is communicated with the third refrigerant port 621, and the second refrigerant port 612 is simultaneously staggered and disconnected with the fourth refrigerant port 622; in the state of recovering the refrigerant, the second refrigerant port 612 and the third refrigerant port 621 are staggered and disconnected from the fourth refrigerant port 622 at the same time; in the on state of the second indoor unit 50, the sixth refrigerant port 712 communicates with the seventh refrigerant port 721, and the second refrigerant port 612 is offset from the eighth refrigerant port 722 and is disconnected.
When the air conditioning system of the invention works, when the first indoor unit 40 gets a starting command, the stop valve enters the on state of the first indoor unit 40, the unit normally performs refrigeration, when the unit is shut down, the unit enters the refrigerant recovery state, the refrigerant is recovered and shut down, the first stop valve 60 is closed, an open circuit is formed, the compressor of the unit continues to operate, the refrigerant in the system is forcedly recovered into the outdoor unit, the second stop valve 70 is closed after the recovery is finished, and all the refrigerant is stored in the outdoor unit. If the user requests to open the second indoor unit 50 while the first indoor unit 40 is operating, the stop valve is commanded to enter a refrigerant recovery state to recover the refrigerant to the outdoor unit, and then enters a second indoor unit conduction state, and the second indoor unit 50 is normally operated.
According to the air conditioning system, the two stop valves are arranged, and the two indoor units are respectively arranged between the two stop valves, so that a liquid storage tank can be omitted, the cost is reduced, and low-refrigerant filling is realized.
According to a third aspect of the present invention, there is also disclosed a control method for controlling an air conditioning system, comprising the steps of:
step S10: switching the air conditioning system to a refrigerant recovery mode, starting the compressor, and closing the first stop valve 60;
step S20: judging whether the refrigerant in the system is recovered to the outdoor unit 30;
step S30: when the determination is yes, the second shut-off valve 70 and the compressor are closed.
It should be understood that the above-described embodiments of the present invention are provided by way of example only and are not intended to limit the scope of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Claims (9)
1. A shut-off valve, comprising:
a valve body (10) for communicating with a pipeline;
a pipe switching device (20), wherein the pipe switching device (20) is rotatably arranged on the valve body (10), and the cut-off valve is switched on or off by rotating the pipe switching device (20);
the valve body (10) is provided with a first interface (11) and a second interface (12) which are communicated with each other;
the pipeline switching device (20) is rotatably arranged at the position of the second connector (12) of the valve body (10), a third connector (21) is arranged on the pipeline switching device (20), and the pipeline switching device (20) has a first working position and a second working position;
in a first working position, the third interface (21) is communicated with the second interface (12), and the stop valve is communicated;
in a second operating position, the third port (21) is offset from the second port (12) and disconnected, and the shut-off valve is closed;
the number of the second interfaces (12) is multiple, the number of the third interfaces (21) is multiple, and in a first working position, part of the third interfaces (21) are communicated with part of the second interfaces (12);
a fourth interface (22) is further arranged on the pipeline switching device (20), and the pipeline switching device (20) is further provided with a third working position;
in the third working position, the fourth interface (22) is communicated with the second interface (12), and meanwhile, the third interface (21) is dislocated from the second interface (12) and is disconnected, and the stop valve is connected;
in the second operating position, the third port (21) and the fourth port (22) are simultaneously offset from the second port (12) and disconnected, and the shut-off valve is closed.
2. The shut-off valve of claim 1, further comprising:
and the stepping motor (80) is in driving connection with the pipeline switching device (20).
3. A shut-off valve according to claim 1, wherein,
the pipeline switching device (20) is controlled manually.
4. An air conditioning system comprising the shut-off valve of any one of claims 1 to 3.
5. The air conditioning system of claim 4, further comprising a refrigerant compression cycle comprising: an outdoor unit (30), an indoor unit, a first stop valve (60) and a second stop valve (70), wherein the indoor unit is arranged between the first stop valve (60) and the second stop valve (70).
6. An air conditioning system according to claim 5, wherein,
the indoor unit comprises a plurality of indoor units, and a plurality of indoor units are arranged in parallel.
7. The air conditioning system of claim 4, further comprising a refrigerant compression cycle comprising: an outdoor unit (30), a first indoor unit (40), a second indoor unit (50), a first stop valve (60) and a second stop valve (70), wherein the first indoor unit (40) is arranged between the first stop valve (60) and the second stop valve (70), and the second indoor unit (50) is arranged between the first stop valve (60) and the second stop valve (70);
the first shutoff valve (60) includes:
a first valve body (61), wherein the first valve body (61) is provided with a first refrigerant port (611) and a second refrigerant port (612) which are communicated with each other, and the first refrigerant port (611) is communicated with a first end of the outdoor unit (30);
a first pipeline switching device (62), wherein the first pipeline switching device (62) is rotatably arranged at the position of a second refrigerant port (612) of the first valve body (61), a third refrigerant port (621) and a fourth refrigerant port (622) are arranged on the first pipeline switching device (62), the third refrigerant port (621) is communicated with the first end of the first indoor unit (40), and the fourth refrigerant port (622) is communicated with the first end of the second indoor unit (50);
the second shut-off valve (70) includes:
a second valve body (71), wherein the second valve body (71) is provided with a fifth refrigerant port (711) and a sixth refrigerant port (712) which are communicated with each other, and the fifth refrigerant port (711) is communicated with the second end of the outdoor unit (30);
the second pipeline switching device (72), the second pipeline switching device (72) is rotatably arranged at the position of a sixth refrigerant port (712) of the second valve body (71), a seventh refrigerant port (721) and an eighth refrigerant port (722) are arranged on the second pipeline switching device (72), the seventh refrigerant port (721) is communicated with the second end of the first indoor unit (40), and the eighth refrigerant port (722) is communicated with the second end of the second indoor unit (50).
8. An air conditioning system according to claim 7, wherein,
the air conditioning system is provided with a first indoor unit (40) conducting state, a refrigerant recovery state and a second indoor unit (50) conducting state;
in the on state of the first indoor unit (40), the second refrigerant port (612) is communicated with the third refrigerant port (621), and the second refrigerant port (612) is staggered and disconnected with the fourth refrigerant port (622) at the same time;
in the state of recovering the refrigerant, the second refrigerant port (612) is simultaneously staggered and disconnected with the third refrigerant port (621) and the fourth refrigerant port (622);
in the on state of the second indoor unit (50), the sixth refrigerant port (712) communicates with the seventh refrigerant port (721), and the second refrigerant port (612) and the eighth refrigerant port (722) are offset and disconnected.
9. A control method for controlling the air conditioning system according to any one of claims 4 to 8, characterized by comprising the steps of:
step S10: switching the air conditioning system to a refrigerant recovery mode, starting a compressor, and closing a first stop valve (60);
step S20: judging whether the refrigerant in the system is recovered to the outdoor unit (30);
step S30: and when the judgment result is yes, closing the second stop valve (70) and the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175215.6A CN110805952B (en) | 2019-11-26 | 2019-11-26 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175215.6A CN110805952B (en) | 2019-11-26 | 2019-11-26 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110805952A CN110805952A (en) | 2020-02-18 |
| CN110805952B true CN110805952B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911175215.6A Active CN110805952B (en) | 2019-11-26 | 2019-11-26 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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