CN105783315B - Single cold type air conditioner and its control method - Google Patents
Single cold type air conditioner and its control method Download PDFInfo
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- CN105783315B CN105783315B CN201610286812.6A CN201610286812A CN105783315B CN 105783315 B CN105783315 B CN 105783315B CN 201610286812 A CN201610286812 A CN 201610286812A CN 105783315 B CN105783315 B CN 105783315B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 107
- 239000003507 refrigerant Substances 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims description 35
- 238000007689 inspection Methods 0.000 claims 3
- 238000005057 refrigeration Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000007906 compression Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
-
- 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
- F25B41/31—Expansion valves
-
- 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
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2109—Temperatures of a separator
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of single cold type air conditioner and its control methods.Single cold type air conditioner includes: duplex cylinder compressor, outdoor heat exchanger, indoor heat exchanger, gas-liquid separator, refrigerant radiator, the air entry of first cylinder is connected to the first liquid storage device, and the value range of the delivery space ratio of the second cylinder and the first cylinder is 1%~10%；Gas-liquid separator includes gas vent, first interface and second interface, gas vent is connected with the second cylinder, it is in series with the first throttle element of fixed aperture between first interface and outdoor heat exchanger, adjustable second restricting element of aperture is in series between second interface and indoor heat exchanger.Refrigerant radiator tandem is between outdoor heat exchanger and first throttle element.Single cold type air conditioner of the invention, effectively improves energy efficiency of air conditioner.
Description
Technical field
The present invention relates to refrigerating fields, more particularly, to a kind of single cold type air conditioner and its control method.
Background technique
Current air-conditioning refrigeration system does not optimize circulation to the gaseous refrigerant after throttling and into before evaporator
Design causes gaseous refrigerant to influence evaporator heat exchange performance, and increases compressor compresses power consumption, to influence air conditioner
Efficiency is horizontal.The heating capacity water of air-conditioning system at low and ultra-low temperatures can be improved in air injection enthalpy-increasing and Two-stage Compression technology
It is flat, but for the cooling condition that air-conditioning is commonly used, efficiency is promoted very limited.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the present invention proposes a kind of single cold type air conditioner, energy efficiency of air conditioner can effectively improve, effectively facilitate energy conservation and subtract
Row.
The present invention also proposes a kind of control method of above-mentioned single cold type air conditioner.
Single cold type air conditioner according to an embodiment of the present invention, comprising: duplex cylinder compressor, the duplex cylinder compressor include shell
Body, the first cylinder, the second cylinder and the first liquid storage device, the shell are equipped with exhaust outlet, first cylinder and described second
Cylinder is respectively provided in the shell, and first liquid storage device is located at outside the shell, the air entry of first cylinder and institute
State the connection of the first liquid storage device, the value range of the delivery space ratio of second cylinder and first cylinder is 1%~
10%；Outdoor heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger are connected with the exhaust outlet, and the interior is changed
The first end of hot device is connected with first liquid storage device；Gas-liquid separator, the gas-liquid separator include gas vent, first connect
Mouth and second interface, the gas vent are connected with the air entry of second cylinder, and the first interface is changed with the outdoor
The second end of hot device is connected, and the second interface is connected with the second end of the indoor heat exchanger, the first interface and described
It is in series with the first throttle element of fixed aperture between outdoor heat exchanger, is gone here and there between the second interface and the indoor heat exchanger
It is associated with adjustable second restricting element of aperture；Refrigerant radiator for radiating to electric control element, the refrigerant radiator
It is connected between the outdoor heat exchanger and the first throttle element.
Single cold type air conditioner according to an embodiment of the present invention can effectively improve sky by the way that above-mentioned duplex cylinder compressor is arranged
Device efficiency is adjusted, energy-saving and emission-reduction are effectively facilitated, while by setting gas-liquid separator, heat exchange efficiency can be improved, reduce compressor
Compression power consumption further increases air conditioner ability and efficiency, further through setting refrigerant radiator, can have to electric control element
Effect cooling.
In some embodiments of the invention, the first throttle element is capillary or throttle valve, second section
Fluid element is electric expansion valve.
In some embodiments of the invention, electricity is in series between the gas vent and the air entry of second cylinder
Magnet valve.
In some embodiments of the invention, the value range of gas-liquid separator volume is 100mL-500mL.
In some embodiments of the invention, the duplex cylinder compressor further includes the second liquid storage being located at outside the shell
Device, second liquid storage device are connected between the gas vent and the air entry of second cylinder.
Preferably, the volume of first liquid storage device is greater than the volume of the second liquid storage device.
The control method of single cold type air conditioner according to an embodiment of the present invention, single cold type air conditioner are above-mentioned according to the present invention
The single cold type air conditioner of embodiment includes the following steps: to be adjusted when refrigerating operaton according to the testing result to the first test object
The aperture of second restricting element is to setting aperture；Wherein first test object includes outdoor environment temperature, twin-tub pressure
The running frequency of contracting machine, the delivery temperature of exhaust outlet, the pressure at expulsion of exhaust outlet, from the refrigerant that the gas vent is discharged
Between pressure, from the medium temperature of refrigerant, gas-liquid separator temperature, pressure of the gas and liquid separator that the gas vent is discharged to
It is one few.
The control method of single cold type air conditioner according to an embodiment of the present invention can be very good the second restricting element of control
Aperture reaches default aperture, reaches optimum energy-saving effect.
In some embodiments of the invention, first test object is outdoor environment temperature T4 and delivery temperature, head
Running frequency F is first obtained according to the outdoor environment temperature T4 that detects, and according to the outdoor environment temperature T4 detected and
Setting delivery temperature is calculated in the running frequency F, then adjusts the aperture of second restricting element so that detecting
The delivery temperature reach setting delivery temperature.
In some embodiments of the invention, first test object is outdoor environment temperature T4 and pressure at expulsion, head
Running frequency F is first obtained according to the outdoor environment temperature T4 that detects, and according to the outdoor environment temperature T4 detected and
Setting pressure at expulsion is calculated in the running frequency F, then adjusts the aperture of second restricting element so that detecting
The pressure at expulsion reach setting pressure at expulsion.
In some embodiments of the invention, first test object is outdoor environment temperature T4, first according to detection
To outdoor environment temperature T4 obtain running frequency F, and according to the outdoor environment temperature T4 detected and operation frequency
The setting aperture of second restricting element is calculated in rate F, and aperture to the setting for then adjusting second restricting element is opened
Degree.
In some embodiments of the invention, multiple outdoor temperature sections are preset, each outdoor temperature section is corresponding
The set temperature of the different gas-liquid separators, first test object are outdoor environment temperature T4 and the gas-liquid separation
The temperature of device, first according to it is actually detected to outdoor environment temperature T4 obtain where the corresponding gas-liquid in outdoor temperature section point
Then set temperature from device adjusts the aperture of second restricting element up to the actually detected gas-liquid separator arrived
Temperature meets the set temperature.
In some embodiments of the invention, first test object is outdoor environment temperature T4 and intermediate pressure；It is first
Running frequency F is first obtained according to the outdoor environment temperature T4 that detects, and according to the outdoor environment temperature T4 detected and
Setting intermediate pressure is calculated in the running frequency F, then adjusts the aperture of second restricting element so that detecting
The intermediate pressure reach setting intermediate pressure.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the single cold type air conditioner of the embodiment of the present invention；
Fig. 2 is the schematic diagram according to the single cold type air conditioner equipped with the second liquid storage device of the embodiment of the present invention；
Fig. 3 is the schematic diagram according to the single cold type air conditioner for being equipped with solenoid valve and the second liquid storage device of the embodiment of the present invention；
Fig. 4 is the schematic diagram according to the duplex cylinder compressor of the embodiment of the present invention；
Fig. 5 is the flow chart of control method when being freezed according to the single cold type air conditioner of the embodiment of the present invention.
Appended drawing reference:
Single cold type air conditioner 100,
Duplex cylinder compressor 1, shell 10, the first cylinder 11, the second cylinder 12, the first liquid storage device 13, the second liquid storage device 14, row
Port 15,
Outdoor heat exchanger 3, indoor heat exchanger 4,
Gas-liquid separator 5, gas vent m, first interface f, second interface g,
First throttle element 6, the second restricting element 7,
Refrigerant radiator 9,
Solenoid valve 20.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Single cold type air conditioner 100 according to an embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 4, wherein single cold type is empty
Adjust device 100 that there is refrigeration mode.
As Figure 1-Figure 4, single cold type air conditioner 100 according to an embodiment of the present invention, comprising: duplex cylinder compressor 1, outdoor
Heat exchanger 3 and indoor heat exchanger 4, gas-liquid separator 5, first throttle element 6, the second restricting element 7, refrigerant radiator 9.Wherein
Duplex cylinder compressor 1 includes shell 10, the first cylinder 11, the second cylinder 12 and the first liquid storage device 13, and shell 10 is equipped with exhaust outlet
15, the first cylinder 11 and the second cylinder 12 are respectively provided in shell 10, and the first liquid storage device 13 is located at outside shell 10, the first cylinder 11
Air entry be connected to the first liquid storage device 13.That is, the first cylinder 11 and the second cylinder 12 carry out independent compression process, from
The compressed refrigerant and be drained into shell 10 respectively from the compressed refrigerant that the second cylinder 12 is discharged that first cylinder 11 is discharged
It is interior then from exhaust outlet 15 be discharged.
The value range of the delivery space ratio of second cylinder 12 and the first cylinder 11 is 1%~10%.Further,
The value range of the delivery space ratio of two cylinders 12 and the first cylinder 11 is 1%~9%, it is preferable that the second cylinder 12 and the
The value range of the delivery space ratio of one cylinder 11 is 4%~9%.Such as second the exhaust of cylinder 12 and the first cylinder 11 hold
Product ratio can be the parameters such as 4%, 5%, 8% or 8.5%.
The first end of outdoor heat exchanger 3 is connected with exhaust outlet 15, the first end of indoor heat exchanger 4 and 13 phase of the first liquid storage device
Even.Gas-liquid separator 5 includes gas vent m, first interface f and second interface g, the air-breathing of gas vent m and the second cylinder 12
Mouth is connected, and first interface f is connected with the second end of outdoor heat exchanger 3, and second interface g is connected with the second end of indoor heat exchanger 4,
The first throttle element 6 of fixed aperture, second interface g and indoor heat exchanger are in series between first interface f and outdoor heat exchanger 3
Adjustable second restricting element 7 of aperture is in series between 4.Optionally, first throttle element 6 is capillary or throttle valve, the
Two restricting elements 7 are electric expansion valve, it is of course possible to which understanding, the second restricting element 7 can also be that other apertures are adjustable
Element such as heating power expansion valve.
For refrigerant radiator 9 for radiating to electric control element, refrigerant radiator 9 is connected on outdoor heat exchanger 3 and first
Between restricting element 6.It is understood that as long as the structure of refrigerant radiator 9 can circulate refrigerant i.e. to be varied
Can, such as refrigerant radiator 9 may include the metal tube extended that wriggles.
When single cold type air conditioner 100 freezes, the high temperature and pressure refrigerant being discharged from the exhaust outlet 15 of duplex cylinder compressor 1 is discharged into
Condensation heat dissipation is carried out into outdoor heat exchanger 3, from outdoor heat exchanger 3 be discharged liquid refrigerants flow into refrigerant radiator 9 with
Electric control element exchanges heat, to realize the purpose for reducing the temperature of electric control element.The refrigerant flowed out from refrigerant radiator 9 passes through
It is drained into gas-liquid separator 5 after the level-one reducing pressure by regulating flow of first throttle element 6 from first interface f and carries out gas-liquid separation, separated
Intermediate pressure gaseous coolant out is drained into the second cylinder 12 from gas vent m to be compressed.
The intermediate pressure liquid refrigerant being discharged from the second interface g of gas-liquid separator 5 passes through the second level of the second restricting element 7
It is drained into indoor heat exchanger 4 and is exchanged heat to reduce indoor environment temperature after reducing pressure by regulating flow, is discharged from indoor heat exchanger 4 cold
Matchmaker is drained into the first liquid storage device 13, and the refrigerant being discharged from the first liquid storage device 13, which is drained into the first cylinder 11, to be compressed.
From this analysis, the refrigerant of different pressures state has respectively entered first when single cold type air conditioner 100 is run
In cylinder 11 and the second cylinder 12,12 complete independently compression process of the first cylinder 11 and the second cylinder is discharged from the first cylinder 11
Compressed refrigerant and being discharged to from the compressed refrigerant that the second cylinder 12 is discharged mixed in shell 10 after from 15 row of exhaust outlet
Out, simultaneously because the value range of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%~10%, flow is less
And the higher refrigerant of pressure state is drained into lesser second cylinder 12 of delivery space and is compressed, so as to improve energy
Effect, energy-saving and emission-reduction.
Simultaneously by being equipped with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 4, thus gas-liquid separator 5
It is expelled back into the second cylinder 12 and compresses after a part of gaseous coolant is separated, be flowed into room when thus reducing refrigeration
Gas content in the refrigerant of interior heat exchanger 4 reduces gaseous coolant to the heat exchange property of the indoor heat exchanger 4 as evaporator
Influence reduce compressor compresses power consumption so as to improve heat exchange efficiency.
Single cold type air conditioner 100 according to an embodiment of the present invention can be mentioned effectively by the way that above-mentioned duplex cylinder compressor 1 is arranged
High energy efficiency of air conditioner effectively facilitates energy-saving and emission-reduction, while by setting gas-liquid separator 5, heat exchange efficiency can be improved, reduce pressure
Contracting machine compression power consumption further increases air conditioner ability and efficiency, and since refrigerant radiator 9 is arranged, can be to electric control element
Carry out effective temperature-reducing.
As shown in figure 3, in some embodiments of the invention, being gone here and there between gas vent m and the air entry of the second cylinder 12
It is associated with solenoid valve 20, it, can be with by closing solenoid valve 20 thus when the liquid coolant in gas-liquid separator 5 exceeds safety levels
It avoids liquid refrigerants from entering in the second cylinder 12, so as to avoid duplex cylinder compressor 1 that liquid hammer occurs, extends duplex cylinder compressor
1 service life.It is possible to further which liquid level sensor is being arranged on gas-liquid separator 5, pass through the detection of liquid level sensor
As a result the open and-shut mode of solenoid valve 20 is controlled.
In some embodiments of the invention, the value range of the volume of gas-liquid separator 5 is 100mL-500mL.
In some embodiments of the invention, as shown in Figures 2 and 3, duplex cylinder compressor 1 further includes being located at outside shell 10
Second liquid storage device 14, the second liquid storage device 14 are connected between gas vent m and the air entry of the second cylinder 12.To pass through setting
There is the second liquid storage device 14, further gas-liquid separation can be carried out to the refrigerant being discharged from the gas vent m of gas-liquid separator 5, it can
It is returned in the second cylinder 12 with further avoiding liquid coolant, to avoid duplex cylinder compressor 1 that liquid hit phenomenon occurs, improves twin-tub
The service life of compressor 1.
In further embodiment of the present invention, the volume of the first liquid storage device 13 is greater than the volume of the second liquid storage device 14.From
And under the premise of guaranteeing the decrement of the second cylinder 12, by making the volume of the second liquid storage device 14 smaller, can reduce into
This.Preferably, the volume of the second liquid storage device 14 is not more than the half of 13 volume of the first liquid storage device.
Single cold type air conditioner according to the above embodiment of the present invention (is set rated cooling capacity as 3.5kw, by by inventor
The delivery space ratio of two cylinders and the first cylinder is set as efficiency and existing single cold type sky 7.6%) under different operating conditions
It adjusts the efficiency of device to be at the same conditions compared, obtains following data:
| Measurement condition | Prior art efficiency | Technical solution of the present invention efficiency | Promotion ratio |
| Specified refrigeration | 3.93 | 4.26 | 8.40% |
| Centre refrigeration | 5.88 | 6.18 | 5.10% |
| APF | 4.61 | 4.92 | 6.72% |
It follows that single cold type air conditioner according to an embodiment of the present invention is relative to existing single cold type compressor, each work
Condition efficiency and whole year efficiency APF are obviously improved.
Inventor is by the single cold type air-conditioning of different rated cooling capacities and the embodiment of the present invention of different delivery spaces ratio simultaneously
Device is compared with the single cold type air conditioner under existing identical operating condition, and discovery efficiency has promotion, such as inventor by examination
The single cold type air conditioner for issuing after examination and approval the existing embodiment of the present invention (sets rated cooling capacity as 2.6kw, by the second cylinder and the first cylinder
Delivery space ratio is set as 9.2%) compared with the single cold type air conditioner under existing identical operating condition, and efficiency improves 7.3%.
The control method of single cold type air conditioner according to an embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 5, wherein
Single cold type air conditioner is the single cold type air conditioner according to the above embodiment of the present invention.
The control method of single cold type air conditioner according to an embodiment of the present invention, when including the following steps: refrigerating operaton according to
The aperture of second restricting element is adjusted to setting aperture to the testing result of the first test object.That is, when refrigeration, acquisition
Parameter needed for processing the second restricting element of control, then according to the aperture of obtained the second restricting element of state modulator until full
Sufficient condition.
Wherein the first test object includes the exhaust temperature of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet
Degree, exhaust outlet pressure at expulsion, from gas vent be discharged refrigerant intermediate pressure, from gas vent be discharged refrigerant centre
At least one of temperature, gas-liquid separator temperature, pressure of the gas and liquid separator.
It needs to be illustrated, intermediate pressure and medium temperature can pass through detection connection gas vent and the second liquid storage
Refrigerant in the pipeline of device obtains.
After the aperture of the second restricting element meets condition, the first test object can be detected again after operation n seconds,
Then the aperture of the second restricting element is adjusted according to testing result, is so repeated.Certain repeat condition is without being limited thereto, such as can be with
After receiving the operational order of user, the first test object is detected again, and then the second throttling of adjustment is first according to testing result
The aperture of part.In other words, in refrigeration, after the aperture of the second restricting element meets condition, it can run n seconds or connect
After the operation signal for receiving user, judgement is detected again to the relevant parameter of the aperture of the second restricting element, then according to judgement
As a result the aperture of the second restricting element is adjusted, is so repeated.
The control method of single cold type air conditioner according to an embodiment of the present invention can be very good the second restricting element of control
Aperture reaches default aperture, reaches optimum energy-saving effect.
Control method according to an embodiment of the present invention is described in detail by taking six specific embodiments as an example below.
Embodiment 1:
In this embodiment, the first test object is outdoor environment temperature T4 and delivery temperature, and basis first detects
Outdoor environment temperature T4 obtains running frequency F, and is calculated and sets according to the outdoor environment temperature T4 and running frequency F that detect
Determine delivery temperature, then adjusts the aperture of the second restricting element so that the delivery temperature detected reaches setting delivery temperature.
It is understood that calculation formula is located in advance in the electric control element of single cold type air conditioner, calculation formula can be according to practical feelings
Condition specifically limits.
Specifically, when the first test object is outdoor environment temperature T4 and delivery temperature, when refrigeration is switched on outside sensing chamber
Environment temperature T4 determines the running frequency F of compressor according to T4, determines setting delivery temperature TP according to T4 and F, wherein TP=
The value range of a1*F+b1+c1*T4, a1, b1, c1 can be corresponding with outdoor environment temperature T4, such as 20 DEG C >=T4: a1
Take -10--10；B1 takes -100--100；C1 takes-10-10；When 20 DEG C of T4≤30 DEG C <: a1 takes -8--8；B1 takes -80--80；
C1 takes-8-8；When 30 DEG C of T4≤40 DEG C <: a1 takes -9--9；B1 takes -90--90；C1 takes-6-6；When 40 DEG C of T4≤50 DEG C <
When: a1 takes -8--8；B1 takes -90--90；C1 takes-5-5；As 50 DEG C of < T4: a1 takes -10--10；B1 takes -100--100；c1
Take-5-5.Of course, it should be understood that the value of a1, b1, c1 are without being limited thereto, for example, can also with outdoor environment temperature T4 without
It closes, but it is preset in system.
It should be noted that when one of a1, b1 or simultaneously value be 0 when, it is believed that above in formula with this join
Number is unrelated, such as a1=0, that is, thinks unrelated with frequency F.
Then the operation aperture of the second restricting element is adjusted according to TP.Stable operation after second restricting element is adjusted in place.n
Detect whether outdoor temperature T4 changes or whether user has operation again after second, the second section is then adjusted according to associated change
The aperture of fluid element.
For example, booting refrigerating operaton, detects that T4 temperature is 35 DEG C, inquires corresponding to compressor operating frequency under the T4 and should be
90HZ, the delivery temperature coefficient a1 in corresponding temperature section be 0.6, b1 20, c1 0.2, calculates setting delivery temperature TP=
0.6*90+20+0.2*35=81 adjusts the second restricting element aperture: under initial opening according to Tp=81 DEG C of delivery temperature of setting
The TP detected has reached 90 degree, then opens big second restricting element, reaches Tp=81 DEG C of delivery temperature corresponding second section of setting
Fluid element aperture, that is to say, that so that the delivery temperature detected reaches setting delivery temperature.Second restricting element reaches target
Stable operation after aperture.T4 is detected after n seconds not change, and continues stable operation.
In this embodiment, the running frequency of compressor is to be determined by outdoor environment temperature, such as make a reservation for multiple outdoors
Environment temperature section, multiple outdoor environment temperature sections respectively correspond multiple compressor operating frequencies, inquire the outdoor detected
Outdoor environment temperature section where environment temperature, can be obtained corresponding compressor operating frequency.Of course, it should be understood that
The running frequency of compressor can also be detected and setting detection device on the compressor.
Embodiment 2:
In this embodiment, the first test object is outdoor environment temperature T4 and pressure at expulsion, and basis first detects
Outdoor environment temperature T4 obtains running frequency F, and is calculated and sets according to the outdoor environment temperature T4 and running frequency F that detect
Determine pressure at expulsion, then adjusts the aperture of the second restricting element so that the pressure at expulsion detected reaches setting pressure at expulsion.
Specifically, when the first test object is outdoor environment temperature T4 and pressure at expulsion, when refrigeration is switched on outside sensing chamber
Environment temperature T4 determines the running frequency F of compressor according to T4, determines setting pressure at expulsion Pp according to T4 and F；Wherein Pp=
a3*F+b3+c3*T4；The value range of a3, b3, c3 can be corresponding with outdoor environment temperature T4, such as 20 DEG C >=T4: a3
Take -5--5；B3 takes -8--8；C3 takes-1-1；When 20 DEG C of T4≤30 DEG C <: a3 takes-5-5；B3 takes -10--10；C3 takes-2-
2；When 30 DEG C of T4≤40 DEG C <: a3 takes -5--5；B3 takes -12--12；C3 takes-3-3；When 40 DEG C of T4≤50 DEG C <: a3 takes-
6--6；B3 takes -15--15；C3 takes-4-4；As 50 DEG C of < T4: a3 takes -7--7；B3 takes -20--20；C3 takes-5-5.Certainly
It is understood that the value of a3, b3, c3 are without being limited thereto, such as can also be unrelated with outdoor environment temperature T4, but in system
It is preset.It should be noted that when one of a3, b3 or simultaneously value be 0 when, it is believed that above in formula with this
Parameter is unrelated, such as a3=0, that is, thinks unrelated with frequency F.
Then the operation aperture of the second restricting element is adjusted according to Pp.Stable operation after second restricting element is adjusted in place.n
Detect whether outdoor temperature T4 changes or whether user has operation again after second, the second section is then adjusted according to associated change
Fluid element aperture.
Such as booting refrigerating operaton, it detects that T4 temperature is 35 DEG C, inquires corresponding to compressor operating frequency under the T4 and should be
80HZ, the pressure at expulsion coefficient a3 in corresponding temperature section be 0.02, b3 0.7, c3 0.02, calculates pressure at expulsion Pp=
0.02*80+0.7+0.02*35=3.0 adjusts the second restricting element aperture according to setting pressure at expulsion Pp=3.0MPa: initial
It detects that pressure at expulsion Pp has reached 2.5MPa under aperture, then turns down the second restricting element, reach setting pressure at expulsion Pp=
The corresponding second restricting element aperture of 3.0MPa, that is to say, that so that the pressure at expulsion detected reaches setting pressure at expulsion.The
Two restricting elements reach stable operation after target aperture.T4 is detected after n seconds not change, and continues stable operation.
In this embodiment, the running frequency of compressor is to be determined by outdoor environment temperature, such as make a reservation for multiple outdoors
Environment temperature section, multiple outdoor environment temperature sections respectively correspond multiple compressor operating frequencies, inquire the outdoor detected
Outdoor environment temperature section where environment temperature, can be obtained corresponding compressor operating frequency.Of course, it should be understood that
The running frequency of compressor can also be detected and setting detection device on the compressor.
Embodiment 3:
In this embodiment, the first test object is outdoor environment temperature T4, first according to the outdoor environment temperature detected
Degree T4 obtains running frequency F, and the second restricting element is calculated according to the outdoor environment temperature T4 and running frequency F that detect
Setting aperture, then adjust the aperture of the second restricting element to setting aperture.
Specifically, when the first test object is outdoor environment temperature T4, outdoor environment temperature T4 is detected when refrigeration starts；
Compressor operating frequency F is determined according to T4, and the setting aperture Lr of the second restricting element is determined according to T4 and F；Wherein set aperture
Lr=a5*F+b5+c5*T4；Wherein the value range of a5, b5, c5 can be corresponding with outdoor environment temperature T4, such as default difference
Outdoor environment temperature section correspond to the value range of different a5, b5, c5, then can limit according to the actual situation a5, b5,
The value of c5.
Compare the setting aperture Lr of the second restricting element and the difference of the second restricting element initial opening, it is such as consistent, do not have to
It adjusts, it is such as inconsistent, then it adjusts to setting aperture Lr.Stable operation after second restricting element is adjusted in place.It is detected again after n seconds
Whether outdoor temperature T4 changes or whether user has operation, then adjusts the second restricting element aperture according to associated change.
In this embodiment, the running frequency of compressor is to be determined by outdoor environment temperature, such as make a reservation for multiple outdoors
Environment temperature section, multiple outdoor environment temperature sections respectively correspond multiple compressor operating frequencies, inquire the outdoor detected
Outdoor environment temperature section where environment temperature, can be obtained corresponding compressor operating frequency.Of course, it should be understood that
The running frequency of compressor can also be detected and setting detection device on the compressor.
Embodiment 4:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different gas-liquid separations
The temperature of device, the first test object are the temperature of outdoor environment temperature T4 and gas-liquid separator, are arrived first according to actually detected
Outdoor environment temperature T4 obtains the set temperature of the corresponding gas-liquid separator in outdoor temperature section at place, then adjusts the second section
The aperture of fluid element until it is actually detected to the temperature of gas-liquid separator meet set temperature.
Specifically, when the first test object is the temperature of outdoor environment temperature T4 and gas-liquid separator, refrigeration booting fortune
The temperature Ts that outdoor environment temperature T4 and gas-liquid separator are detected when row is inquired corresponding according to the outdoor environment temperature T4 detected
The corresponding gas-liquid separator in outdoor temperature section set temperature, such as the setting temperature in outdoor temperature section and gas-liquid separator
The corresponding relationship of degree can be such that as 20 DEG C >=T4: Ts takes 0-30；When 0 DEG C of T4≤30 DEG C <: Ts takes 0-40；When 30 DEG C
When T4≤40 DEG C <: Ts takes 0-50；When 40 DEG C of T4≤50 DEG C <: Ts takes 0-60；As 50 DEG C of < T4: Ts takes 0-65.When
It so it is understood that above-mentioned numerical value is exemplary illustration, and is not to specific restriction of the invention.
Then the aperture of the second restricting element is adjusted, so that the temperature Ts of the gas-liquid separator detected meets setting temperature
Degree.
Such as booting refrigerating operaton, it detects that T4 temperature is 35 DEG C, inquires under the section T4 and correspond to gas-liquid separator temperature
Ts should be 26 DEG C, detects that the temperature Ts of gas-liquid separator has reached 20 DEG C under initial opening, then turns down the second restricting element, reach
To Ts=26 DEG C of set temperature corresponding second restricting element aperture, that is to say, that so that the temperature of the gas-liquid separator detected
Ts reaches set temperature.Second restricting element reaches stable operation after target aperture.T4 is detected after n seconds not change, and is continued steady
Fixed operation.
Embodiment 5:
In this embodiment, the first test object is outdoor environment temperature T4 and intermediate pressure；Basis detects first
Outdoor environment temperature T4 obtains running frequency F, and is calculated and sets according to the outdoor environment temperature T4 and running frequency F that detect
Determine intermediate pressure, then adjusts the aperture of the second restricting element so that the intermediate pressure detected reaches setting intermediate pressure.
Specifically, the relational expression set between intermediate pressure Ps and outdoor environment temperature T4 and running frequency F can be Ps
=a7*F+b7+c7*T4, wherein the value range of a7, b7, c7 can be corresponding with outdoor environment temperature T4, such as preset different
Outdoor environment temperature section corresponds to the value interval of different a7, b7, c7, then can limit a7, b7, c7 according to the actual situation
Value.
In this embodiment, the running frequency of compressor is to be determined by outdoor environment temperature, such as make a reservation for multiple outdoors
Environment temperature section, multiple outdoor environment temperature sections respectively correspond multiple compressor operating frequencies, inquire the outdoor detected
Outdoor environment temperature section where environment temperature, can be obtained corresponding compressor operating frequency.Of course, it should be understood that
The running frequency of compressor can also be detected and setting detection device on the compressor.
Embodiment 6:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different gas-liquid separations
The pressure of device, the first test object are the pressure of outdoor environment temperature T4 and gas-liquid separator, are arrived first according to actually detected
Outdoor environment temperature T4 obtains the setting pressure of the corresponding gas-liquid separator in outdoor temperature section at place, then adjusts the second section
The aperture of fluid element is until the pressure of the actually detected gas-liquid separator arrived meets setting pressure.
Specifically, when the first test object is the pressure of outdoor environment temperature T4 and gas-liquid separator, refrigeration booting fortune
The pressure Ps that outdoor environment temperature T4 and gas-liquid separator are detected when row is inquired corresponding according to the outdoor environment temperature T4 detected
The corresponding gas-liquid separator in outdoor temperature section setting pressure, such as the setting pressure in outdoor temperature section and gas-liquid separator
The corresponding relationship of power can be such that as 20 DEG C >=T4: Ps takes 0.1-8；When 20 DEG C of T4≤30 DEG C <: Ps takes 0.1-10；
When 30 DEG C of T4≤40 DEG C <: Ps takes 0.1-15；When 40 DEG C of T4≤50 DEG C <: Ps takes 0.1-20；As 50 DEG C of < T4: Ps
Take 0.1-25.It of course, it should be understood that above-mentioned numerical value is exemplary illustration, and is not to specific restriction of the invention.
Then the aperture of the second restricting element is adjusted, so that the pressure Ps of the gas-liquid separator detected meets setting pressure
Power.
Such as booting refrigerating operaton, it detects that T4 temperature is 50 DEG C, inquires under the section T4 and correspond to setting for gas-liquid separator
Constant-pressure Ps should be 2.0MPa, and the pressure Ps of the gas-liquid separator detected under initial opening has reached 2.2MPa, then opens big by
Two restricting elements reach the corresponding second restricting element aperture of setting pressure Ps=2.2MPa, that is to say, that so that detect
The pressure Ps of gas-liquid separator meets setting pressure.Second restricting element reaches stable operation after target aperture.T4 is detected after n seconds
Do not change, continues stable operation.
It is understood that illustrating of being merely given as of above-mentioned six specific embodiments, the control of the embodiment of the present invention
Method is not limited to above-mentioned six kinds, and setting pressure at expulsion obtained by calculation, setting delivery temperature, setting are opened in above-described embodiment
The setup parameters such as degree, setting intermediate pressure can also be obtained using other modes, such as different outdoor temperature areas can be set
Between, multiple outdoor temperature sections correspond to unused setup parameter, the outdoor where the actually detected outdoor environment temperature arrived
Corresponding setup parameter can be obtained in temperature range.It will also be appreciated that consulted above by outdoor environment temperature
Parameter can also be obtained by preset calculation formula.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal 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 specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of control method of single cold type air conditioner, which is characterized in that single cold type air conditioner includes: duplex cylinder compressor, described
Duplex cylinder compressor includes shell, the first cylinder, the second cylinder and the first liquid storage device, and the shell is equipped with exhaust outlet, and described the
One cylinder and second cylinder are respectively provided in the shell, and first liquid storage device is located at outside the shell, and described first
The air entry of cylinder is connected to first liquid storage device, and the delivery space ratio of second cylinder and first cylinder takes
Being worth range is 1%~9%；Outdoor heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger and the exhaust outlet phase
Even, the first end of the indoor heat exchanger is connected with first liquid storage device；Gas-liquid separator, the gas-liquid separator include gas
Body outlet, first interface and second interface, the gas vent are connected with the air entry of second cylinder, the first interface
It is connected with the second end of the outdoor heat exchanger, the second interface is connected with the second end of the indoor heat exchanger, and described
The first throttle element of fixed aperture, the second interface and the interior are in series between one interface and the outdoor heat exchanger
Adjustable second restricting element of aperture is in series between heat exchanger；Refrigerant radiator for radiating to electric control element, institute
Refrigerant radiator tandem is stated between the outdoor heat exchanger and the first throttle element；
It is opened when refrigerating operaton according to aperture to the setting that the testing result to the first test object adjusts second restricting element
Degree；Wherein first test object includes the exhaust temperature of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet
At least one of degree, the medium temperature for the refrigerant being discharged from the gas vent, gas-liquid separator temperature；Or described first
Test object includes the pressure at expulsion of exhaust outlet, the intermediate pressure for the refrigerant being discharged from the gas vent, gas-liquid separator pressure
At least one of power and outdoor environment temperature, the running frequency of duplex cylinder compressor, the delivery temperature of exhaust outlet, from the gas
Export the combination of at least one of medium temperature, gas-liquid separator temperature of the refrigerant of discharge.
2. the control method of single cold type air conditioner according to claim 1, which is characterized in that first test object is
Outdoor environment temperature T4 and delivery temperature obtain running frequency F according to the outdoor environment temperature T4 detected first, and according to inspection
Setting delivery temperature is calculated in the outdoor environment temperature T4 and the running frequency F measured, then adjusts described second
The aperture of restricting element is so that the delivery temperature detected reaches setting delivery temperature.
3. the control method of single cold type air conditioner according to claim 1, which is characterized in that first test object is
Outdoor environment temperature T4 and pressure at expulsion obtain running frequency F according to the outdoor environment temperature T4 detected first, and according to inspection
Setting pressure at expulsion is calculated in the outdoor environment temperature T4 and the running frequency F measured, then adjusts described second
The aperture of restricting element is so that the pressure at expulsion detected reaches setting pressure at expulsion.
4. the control method of single cold type air conditioner according to claim 1, which is characterized in that first test object is
Outdoor environment temperature T4 obtains running frequency F according to the outdoor environment temperature T4 detected first, and according to detecting
The setting aperture of second restricting element is calculated in the outdoor environment temperature T4 and running frequency F, then described in adjustment
The aperture of second restricting element is to setting aperture.
5. the control method of single cold type air conditioner according to claim 1, which is characterized in that preset multiple outdoor temperature areas
Between, each outdoor temperature section corresponds to the set temperature of the different gas-liquid separators, and first test object is
The temperature of outdoor environment temperature T4 and the gas-liquid separator, first according to it is actually detected to outdoor environment temperature T4 obtain institute
The corresponding gas-liquid separator in outdoor temperature section set temperature, then adjust second restricting element aperture until
It is actually detected to the temperature of the gas-liquid separator meet the set temperature.
6. the control method of single cold type air conditioner according to claim 1, which is characterized in that first test object is
Outdoor environment temperature T4 and intermediate pressure；Running frequency F is obtained according to the outdoor environment temperature T4 detected first, and according to inspection
Setting intermediate pressure is calculated in the outdoor environment temperature T4 and the running frequency F measured, then adjusts described second
The aperture of restricting element is so that the intermediate pressure detected reaches setting intermediate pressure.
7. the control method of single cold type air conditioner according to claim 1, which is characterized in that the first throttle element is
Capillary or throttle valve, second restricting element are electric expansion valve.
8. the control method of single cold type air conditioner according to claim 1, which is characterized in that the gas vent and described
Solenoid valve is in series between the air entry of second cylinder.
9. the control method of single cold type air conditioner according to claim 1, which is characterized in that the appearance of the gas-liquid separator
Long-pending value range is 100mL-500mL.
10. the control method of -9 described in any item single cold type air conditioners according to claim 1, which is characterized in that the twin-tub
Compressor further includes the second liquid storage device being located at outside the shell, and second liquid storage device is connected on the gas vent and described
Between the air entry of second cylinder.
11. the control method of single cold type air conditioner according to claim 10, which is characterized in that first liquid storage device
Volume is greater than the volume of second liquid storage device.
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| CN201610286812.6A CN105783315B (en) | 2016-04-29 | 2016-04-29 | Single cold type air conditioner and its control method |
| PCT/CN2016/087934 WO2017185515A1 (en) | 2016-04-29 | 2016-06-30 | Cooling and heating air conditioner, cooling air conditioner and controlling method for air conditioner |
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| CN109682137B (en) * | 2018-12-18 | 2021-11-05 | 重庆美的通用制冷设备有限公司 | Control method and system of water chilling unit |
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| JP3167372B2 (en) * | 1991-10-11 | 2001-05-21 | 東芝キヤリア株式会社 | Air conditioner |
| JPH06101895A (en) * | 1992-09-18 | 1994-04-12 | Fujitsu General Ltd | Inverter controller for air-conditioner |
| CN103557624A (en) * | 2013-10-11 | 2014-02-05 | 广东美芝制冷设备有限公司 | Refrigeration cycling device |
| CN104215001A (en) * | 2014-07-10 | 2014-12-17 | 广东美的集团芜湖制冷设备有限公司 | Double-stage compressor air-conditioner system and control method thereof |
| CN204963286U (en) * | 2015-08-31 | 2016-01-13 | 广东美的制冷设备有限公司 | Changes in temperature type air conditioning system and single cold mould air conditioning system |
| CN105783314B (en) * | 2016-04-29 | 2019-07-30 | 广东美的制冷设备有限公司 | Single cold type air conditioner and its control method |
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