CN106802036A - The cooling cycle system and method and high-temperature air conditioner of a kind of high-temperature air conditioner - Google Patents
The cooling cycle system and method and high-temperature air conditioner of a kind of high-temperature air conditioner Download PDFInfo
- Publication number
- CN106802036A CN106802036A CN201710014546.6A CN201710014546A CN106802036A CN 106802036 A CN106802036 A CN 106802036A CN 201710014546 A CN201710014546 A CN 201710014546A CN 106802036 A CN106802036 A CN 106802036A
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- working medium
- compressor
- gas
- air conditioner
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/027—Compressor control by controlling pressure
- F25B2600/0271—Compressor control by controlling pressure the discharge pressure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to the cooling cycle system and method and high-temperature air conditioner of a kind of high-temperature air conditioner, the cooling cycle system includes being sequentially connected the compressor, outdoor heat exchanger, capillary, indoor heat exchanger and the gas-liquid separator that constitute loop；Also include pressure relief device, the two ends of the pressure relief device are connected by pipeline with the sender property outlet of the compressor and the working medium entrances of the gas-liquid separator respectively.The present invention sets pressure relief device by between the sender property outlet of compressor and the working medium entrances of gas-liquid separator, when the pressure at expulsion of compressor is raised, part working medium can conflux by pressure relief device with the outlet working medium of indoor heat exchanger, can reduce the live load of outdoor heat exchanger.
Description
Technical field
The present invention relates to the cooling cycle system and method and high-temperature air conditioner of field of air conditioning, especially a kind of high-temperature air conditioner.
Background technology
The high-temperature air conditioner of existing T3 operating modes, due to needing to meet certain efficiency requirement, it is necessary to sacrifice the portion under T1 operating modes
Point ability efficiency, because coolant injection amount under T3 operating modes under the conditions of optimal performance under T1 operating modes compared with will lack, meanwhile, refrigerant is less
In the case of, air-conditioning is also easier under condensation operating mode to be occurred blowing water phenomenon.Prior art is typically by increasing changing for outdoor unit
Hot area or improvement compressor arrangement can solve above-mentioned two difficult point, but can undoubtedly increase the cost of air-conditioning.
The content of the invention
The technical problems to be solved by the invention are directed to the deficiencies in the prior art, there is provided one kind is not increasing substantially sky
On the premise of being tuned into this, solve T3 operating mode air-conditioning charging amounts and the refrigeration of air conditioning capacity and the high-temperature air conditioner of the unfavorable problem of performance is followed
Loop systems and method and high-temperature air conditioner.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of cooling cycle system of high-temperature air conditioner, including
It is sequentially connected compressor, outdoor heat exchanger, capillary, indoor heat exchanger and the gas-liquid separator for constituting loop；Also include pressure release
Device, the two ends of the pressure relief device pass through pipeline and the sender property outlet of the compressor and the work of the gas-liquid separator respectively
Matter entrance is connected.
The beneficial effects of the invention are as follows：Set by between the sender property outlet of compressor and the working medium entrances of gas-liquid separator
Pressure relief device is put, when the pressure at expulsion of compressor is raised, part working medium can be by the outlet of pressure relief device and indoor heat exchanger
Working medium is confluxed, and can reduce the live load of outdoor heat exchanger.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the pressure relief device includes unloading valve and pressure release capillary, the compressor, unloading valve, pressure release capillary
Pipe and gas-liquid separator are sequentially connected composition pressure release loop.
Beneficial effect using above-mentioned further scheme is：In the setting pressure of the discharge pressure more than unloading valve of compressor
When, unloading valve is started working, by part working medium by that after unloading valve and pressure release capillary, can be exchanged heat with gas-liquid separator,
And conflux with indoor heat exchanger outlet working medium, the load of outdoor heat exchanger can be effectively reduced.
Further, the pressure release loop is provided with check valve, and the check valve is located at the pressure release capillary and the pressure
Between contracting machine.
Beneficial effect using above-mentioned further scheme is：Due to the presence of check valve, working medium is only allowed through pressure release loop
Outlet working medium with indoor heat exchanger is confluxed, without causing working medium to be flowed into pressure release loop from the outlet of indoor heat exchanger.
Further, the pipeline between the pressure release capillary and the check valve is around the home in the gas-liquid separator outer wall
On.
Beneficial effect using above-mentioned further scheme is：By by the pipeline between pressure release capillary and check valve around the home
On gas-liquid separator outer wall, the outlet working medium after working medium can be made to be exchanged heat with gas-liquid separator again with indoor heat exchanger is converged
Stream, reduces the temperature of working medium of confluxing.
The present invention also provides a kind of refrigerating and circulating method of high-temperature air conditioner, comprises the following steps：
S1, under worst hot case, a part for the working medium that compressor is discharged sequentially passes through outdoor heat exchanger, capillary, room
Interior heat exchanger, gas-liquid separator and compression mechanism into circulation loop be circulated；
S2, another part for the working medium that compressor is discharged is entered into gas-liquid separator by pressure relief device, gas-liquid point
Gas-liquid separation is carried out to the part working medium from device.
The beneficial effects of the invention are as follows：By the way that a part for compressor discharge working medium is entered into gas-liquid after pressure relief device
After separating liquid, turn again in compressor, can effectively reduce the live load of outdoor heat exchanger.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, in S2, another part of the compression working medium of compressor discharge sequentially passes through unloading valve and pressure release capillary,
Then into gas-liquid separator.
Beneficial effect using above-mentioned further scheme is：In the setting pressure of the discharge pressure more than unloading valve of compressor
When, unloading valve is started working, by part working medium by that after unloading valve and pressure release capillary, can be exchanged heat with gas-liquid separator,
And conflux with indoor heat exchanger outlet working medium, the load of outdoor heat exchanger can be effectively reduced.
Further, in the S2, the indoor heat exchange is flowed to by check valve by the compression working medium of pressure release capillary
In the working medium of device discharge.
Beneficial effect using above-mentioned further scheme is：Due to the presence of check valve, working medium is only allowed through pressure release loop
Outlet working medium with indoor heat exchanger is confluxed, without causing working medium to be flowed into pressure release loop from the outlet of indoor heat exchanger.
Further, in S2, the indoor heat exchanger is flowed to after cooling by the compression working medium of pressure release capillary and is discharged
Working medium in.
Beneficial effect using above-mentioned further scheme is：Part working medium by unloading valve, through pressure release capillary-compensated after,
Working medium is exchanged heat with gas-liquid separator, reduces Temperature of Working, is conducive to improving the efficiency of compressor.
The present invention also provides a kind of high-temperature air conditioner, including above-mentioned cooling cycle system.
The beneficial effects of the invention are as follows：The present invention is entered by the way that compressor to be discharged a part for working medium after pressure relief device
To after gas-liquid separation liquid, turn again in compressor, can effectively reduce the live load of outdoor heat exchanger.
Brief description of the drawings
Fig. 1 is overall structure figure of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, compressor；2nd, outdoor heat exchanger；3rd, capillary；4th, indoor heat exchanger；5th, gas-liquid separator；6th, unloading valve；7、
Pressure release capillary；8th, check valve.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
Embodiment 1
As shown in figure 1, a kind of cooling cycle system of high-temperature air conditioner of the present embodiment, including it is sequentially connected composition loop
Compressor 1, outdoor heat exchanger 2, capillary 3, indoor heat exchanger 4 and gas-liquid separator 5；Wherein, the sender property outlet of compressor 1 leads to
Piping is connected with the working medium entrances of outdoor heat exchanger 2, the sender property outlet of outdoor heat exchanger 2 and the working medium of indoor heat exchanger 4
Entrance is connected by capillary 3, and the sender property outlet of indoor heat exchanger 4 passes through the working medium entrances phase of pipeline and gas-liquid separator 5
Connection, the sender property outlet of gas-liquid separator 5 is connected by pipeline with the working medium entrances of compressor 1.One kind of the present embodiment is high
The cooling cycle system of warm air-conditioning also includes pressure relief device, and the two ends of pressure relief device are respectively by pipeline and the working medium of compressor 1
Outlet is connected with the working medium entrances of gas-liquid separator 5.The direction of arrow in the present embodiment Fig. 1 is the flow direction of working medium.
The cooling cycle system of the present embodiment is suitable for the high-temperature air conditioner of existing worst hot case, and high-temperature air conditioner in unskilled labor
Under condition, pressure relief device does not work, and working medium is according to conventional Operation mode cycle；Only under worst hot case, the pressure at expulsion liter of compressor
Height, pressure relief device is just started working, and makes a part for the working medium of compressor discharge through pressure relief device and indoor heat exchanger outlet
Working medium is confluxed, and can suitably reduce the live load of outdoor heat exchanger, can either ensure ability energy of the air-conditioning under common operating mode
Effect, can lift the ability efficiency under worst hot case again.The cooling cycle system of the present embodiment discharges working medium by by compressor
After a part enters into gas-liquid separation liquid after pressure relief device, turn again in compressor, can effectively reduce outdoor heat exchange
The live load of device.The cooling cycle system of the present embodiment, it is to avoid outdoor heat exchanger heat exchange is insufficient and condensation that cause blows
The problem of water.
As shown in figure 1, the pressure relief device of the present embodiment include unloading valve 6 and pressure release capillary 7, compressor 1, relief valve 6,
Pressure release capillary 7 and gas-liquid separator 5 are sequentially connected composition pressure release loop, and pressure release loop is provided with check valve 8,8, check valve
Between pressure release capillary 7 and compressor 1；Wherein, the entrance of relief valve 6 is connected by pipeline with the sender property outlet of compressor 1
Logical, the outlet of relief valve 6 is connected by pipeline with one end of pressure release capillary 7, and the other end of pressure release capillary 7 passes through pipeline
One end with check valve 8 is connected, and the other end of check valve 8 is connected by pipeline with the working medium entrances of gas-liquid separator 5；Institute
Pipeline between pressure release capillary 7 and the check valve 8 is stated around the home on the outer wall of the gas-liquid separator 5.The present embodiment by
In the presence of check valve, working medium is only allowed to conflux with the outlet working medium of indoor heat exchanger through pressure release loop, without causing working medium
It is flowed into pressure release loop from the outlet of indoor heat exchanger.And by the pipeline between pressure release capillary and check valve around the home in gas-liquid
On separator outer wall, the outlet working medium after working medium can be made to be exchanged heat with gas-liquid separator again with indoor heat exchanger is confluxed, drop
The temperature of low working medium of confluxing.
The cooling cycle system of the present embodiment at common operating mode (outdoor temperature is 20 DEG C -40 DEG C), do not open by unloading valve,
Working medium is circulated according to conventional operating mode.At worst hot case (outdoor temperature is more than 40 DEG C), from the big portion of compressor discharge
Division of labor matter still enters into outdoor heat exchanger carries out regular circulation, but during due to worst hot case, the pressure at expulsion of compressor is excessive,
When the pressure at expulsion of compressor reaches setting pressure, open unloading valve, a small amount of working medium passes through unloading valve, by pressure release capillary
Tube coupling stream and gas-liquid separator are exchanged heat, and the working medium exported by the indoor heat exchanger in check valve and main kind of refrigeration cycle is confluxed, and is passed through
Inflow compressor is circulated next time after crossing gas-liquid separator separates.
Embodiment 2
As shown in figure 1, a kind of refrigerating and circulating method of high-temperature air conditioner of the present embodiment, comprises the following steps：
S1, under worst hot case, the part of the working medium that compressor 1 is discharged sequentially pass through outdoor heat exchanger 2, capillary 3,
The circulation loop that indoor heat exchanger 4, gas-liquid separator 5 and compressor 1 are constituted is circulated；
S2, another part for the working medium that compressor 1 is discharged is entered into gas-liquid separator 5 by pressure relief device, gas-liquid
The separator 5 pairs part working medium carries out gas-liquid separation.
In the S2 of the present embodiment, another part of the compression working medium of the discharge of compressor 1 sequentially passes through unloading valve 6 and pressure release hair
Tubule 7, then be flowed to after supercooling in the working medium of the discharge of indoor heat exchanger 4, the temperature reduction of the working medium that makes to conflux；The present embodiment
Pressure release capillary and the compressor between pipeline be provided with check valve, to avoid outlet stream of the working medium from indoor heat exchanger
Enter in pressure release loop；The present embodiment is preferably used the pipeline between pressure release capillary and check valve around the home in gas-liquid separator
On 5 outer walls, exchanged heat with gas-liquid separator 5.The present embodiment converges the working medium lowered the temperature by gas-liquid separator by check valve 8
Flow to indoor heat exchanger 4 discharge working medium in, then into gas-liquid separator 5 in, enter finally into compressor 1.This reality
It is the flow direction of working medium to apply the direction of arrow in illustration 1.
The refrigerating and circulating method of the present embodiment is suitable for the high-temperature air conditioner of existing worst hot case, and high-temperature air conditioner in unskilled labor
Under condition, pressure relief device does not work, and working medium is according to conventional Operation mode cycle；Only under worst hot case, the pressure at expulsion liter of compressor
Height, pressure relief device is just started working, and makes a part for the working medium of compressor discharge through pressure relief device and indoor heat exchanger outlet
Working medium is confluxed, and can suitably reduce the live load of outdoor heat exchanger, can either ensure ability energy of the air-conditioning under common operating mode
Effect, can lift the ability efficiency under worst hot case again.The refrigerating and circulating method of the present embodiment discharges working medium by by compressor
After a part enters into gas-liquid separation liquid after pressure relief device, turn again in compressor, can effectively reduce outdoor heat exchange
The live load of device.The refrigerating and circulating method of the present embodiment, it is to avoid outdoor heat exchanger heat exchange is insufficient and condensation that cause blows
The problem of water.
The refrigerating and circulating method of the present embodiment at common operating mode (outdoor temperature is 20 DEG C -40 DEG C), do not open by unloading valve,
Working medium is circulated according to conventional operating mode.At worst hot case (outdoor temperature is more than 40 DEG C), from the big portion of compressor discharge
Division of labor matter still enters into outdoor heat exchanger carries out regular circulation, but during due to worst hot case, the pressure at expulsion of compressor is excessive,
When the pressure at expulsion of compressor reaches setting pressure, open unloading valve, a small amount of working medium passes through unloading valve, by pressure release capillary
Tube coupling stream and gas-liquid separator are exchanged heat, and the working medium exported by the indoor heat exchanger in check valve and main kind of refrigeration cycle is confluxed, and is passed through
Inflow compressor is circulated next time after crossing gas-liquid separator separates.
Embodiment 3
As shown in figure 1, a kind of high-temperature air conditioner of the present embodiment, including the cooling cycle system described in embodiment 1.Fig. 1
In the direction of arrow for working medium flow direction.
Operation principle of the invention is：At common operating mode (outdoor temperature is 20 DEG C -40 DEG C), unloading valve does not work, place
In closed mode, routinely operating mode is circulated working medium；At worst hot case (outdoor temperature is more than 40 DEG C), the row of compressor
Go out setting pressure of the pressure more than unloading valve, still flowing into outdoor heat exchanger from most of working medium of the discharge of compressor 1 carries out routine
Circulation, unloading valve is opened, in running order, and a small amount of working medium passes through unloading valve, through pressure release capillary-compensated and gas-liquid separator
Heat exchange, the working medium exported with indoor heat exchanger in major cycle by check valve is confluxed, and flowing into compressor through gas-liquid separator is carried out
Circulation.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second ", be only used for describe purpose, and it is not intended that indicate or imply relatively important
Property or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Person implicitly includes at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. a kind of cooling cycle system of high-temperature air conditioner, including compressor (1), the outdoor heat exchanger for being sequentially connected composition loop
(2), capillary (3), indoor heat exchanger (4) and gas-liquid separator (5)；Characterized in that, also including pressure relief device, the pressure release
The two ends of device pass through pipeline and the sender property outlet of the compressor (1) and the working medium entrances of the gas-liquid separator (5) respectively
It is connected.
2. a kind of cooling cycle system of high-temperature air conditioner according to claim 1, it is characterised in that the pressure relief device includes
Unloading valve (6) and pressure release capillary (7), the compressor (1), unloading valve (6), pressure release capillary (7) and gas-liquid separator (5)
It is sequentially connected composition pressure release loop.
3. a kind of cooling cycle system of high-temperature air conditioner according to claim 2, it is characterised in that set on the pressure release loop
There is check valve (8), the check valve (8) is between the pressure release capillary (7) and the compressor (1).
4. a kind of cooling cycle system of high-temperature air conditioner according to Claims 2 or 3, it is characterised in that the pressure release capillary
Pipeline between pipe (7) and the check valve (8) is around the home on the outer wall of the gas-liquid separator (5).
5. a kind of refrigerating and circulating method of high-temperature air conditioner, it is characterised in that comprise the following steps：
S1, under worst hot case, a part for the working medium that compressor (1) is discharged sequentially passes through outdoor heat exchanger (2), capillary
(3), the circulation loop that indoor heat exchanger (4), gas-liquid separator (5) and compressor (1) are constituted is circulated；
S2, another part for the working medium that compressor (1) is discharged is entered into gas-liquid separator (5) by pressure relief device, gas-liquid
Separator (5) carries out gas-liquid separation to the part working medium.
6. a kind of refrigerating and circulating method of high-temperature air conditioner according to claim 5, it is characterised in that in S2, compressor (1) row
The another part for the compression working medium for going out sequentially passes through unloading valve (6) and pressure release capillary (7), then into gas-liquid separator
(5) in.
7. a kind of refrigerating and circulating method of high-temperature air conditioner according to claim 6, it is characterised in that in the S2, by letting out
The compression working medium of dabbing tubule (7) is flowed in the working medium that the indoor heat exchanger (4) is discharged by check valve (8).
8. a kind of refrigerating and circulating method of high-temperature air conditioner according to claim 6 or 7, it is characterised in that in S2, by pressure release
The compression working medium of capillary (7) is flowed in the working medium of the indoor heat exchanger (4) discharge after cooling.
9. a kind of high-temperature air conditioner, it is characterised in that including the cooling cycle system as described in any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014546.6A CN106802036B (en) | 2017-01-09 | 2017-01-09 | Refrigeration cycle system and method of high-temperature air conditioner and high-temperature air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014546.6A CN106802036B (en) | 2017-01-09 | 2017-01-09 | Refrigeration cycle system and method of high-temperature air conditioner and high-temperature air conditioner |
Publications (2)
| Publication Number | Publication Date |
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| CN106802036A true CN106802036A (en) | 2017-06-06 |
| CN106802036B CN106802036B (en) | 2019-12-27 |
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ID=58984344
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710014546.6A Active CN106802036B (en) | 2017-01-09 | 2017-01-09 | Refrigeration cycle system and method of high-temperature air conditioner and high-temperature air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260553A (en) * | 2019-06-10 | 2019-09-20 | 广东美的制冷设备有限公司 | The control method of air conditioner and air conditioner |
| CN110542226A (en) * | 2019-08-30 | 2019-12-06 | 郑州之铂智能科技有限公司 | A control system for widening the use range of air-cooled fixed-frequency heat pump units |
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| CN202119169U (en) * | 2011-06-03 | 2012-01-18 | 合肥通用制冷设备有限公司 | Refrigerating system of air-conditioner with decompression branch |
| CN102829583A (en) * | 2012-09-25 | 2012-12-19 | 青岛海尔空调电子有限公司 | Pipeline structure for reducing opening noise of pressure unloading valve of air conditioning system |
| CN204006307U (en) * | 2014-04-21 | 2014-12-10 | 广东美的集团芜湖制冷设备有限公司 | The air-conditioner with unloading function |
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| CN110260553A (en) * | 2019-06-10 | 2019-09-20 | 广东美的制冷设备有限公司 | The control method of air conditioner and air conditioner |
| CN110542226A (en) * | 2019-08-30 | 2019-12-06 | 郑州之铂智能科技有限公司 | A control system for widening the use range of air-cooled fixed-frequency heat pump units |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106802036B (en) | 2019-12-27 |
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