CN105783303B - 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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- CN105783303B CN105783303B CN201610281871.4A CN201610281871A CN105783303B CN 105783303 B CN105783303 B CN 105783303B CN 201610281871 A CN201610281871 A CN 201610281871A CN 105783303 B CN105783303 B CN 105783303B
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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
- 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
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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
- F25B41/31—Expansion 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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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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
- 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
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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 and gas-liquid separator, duplex cylinder compressor includes the first cylinder, the second cylinder, the first liquid storage device and the second liquid storage device, the air entry of first cylinder is connected to the first liquid storage device, the air entry of second cylinder is connected to the second 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 liquid storage device, it is in series with the adjustable first throttle element of aperture between first interface and outdoor heat exchanger, adjustable second restricting element of aperture is in series between second interface and indoor heat exchanger.Single cold type air conditioner according to the present 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, the first liquid storage device and the second liquid storage device, the shell are equipped with exhaust outlet, first cylinder
It is respectively provided in the shell with second cylinder, first liquid storage device and second liquid storage device are located at the shell
Outside, the air entry of first cylinder is connected to first liquid storage device, the air entry of second cylinder and second storage
The value range of the delivery space ratio of the connection of liquid device, second cylinder and first cylinder is 1%~10%；Outdoor is changed
Hot device and indoor heat exchanger, the first end of the outdoor heat exchanger are connected with the exhaust outlet, and the first of the indoor heat exchanger
End is connected with first liquid storage device；Gas-liquid separator, the gas-liquid separator include that gas vent, first interface and second connect
Mouthful, the gas vent is connected with second liquid storage device, and the first interface 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, connects between the first interface and the outdoor heat exchanger
There is the adjustable first throttle element of aperture, aperture adjustable second is in series between the second interface and the indoor heat exchanger
Restricting 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 the second liquid storage device is arranged, can extend duplex cylinder compressor
Service life.
In some embodiments of the invention, the first throttle element is electric expansion valve, second restricting element
For electric expansion valve.
In some embodiments of the invention, solenoid valve is in series between the gas vent and second liquid storage device.
In some embodiments of the invention, the value range of gas-liquid separator volume is 100mL-500mL.
In some embodiments of the invention, 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, the control method include the following steps: first according to the detection knot to the first test object
Fruit adjusts the aperture of the first throttle element to aperture is set, and then adjusts institute according to the testing result to the second test object
The aperture for stating the second restricting element is less than second restricting element to aperture, the setting aperture of the first throttle element is set
Setting aperture, the testing result of first test object is different from the testing result of second test object；Wherein institute
Stating the first test object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, the delivery temperature of exhaust outlet, exhaust outlet
The intermediate temperature of pressure at expulsion, the intermediate pressure for the refrigerant being discharged from the gas vent, the refrigerant being discharged from the gas vent
At least one of degree；Second test object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet
Delivery temperature, the pressure at expulsion of exhaust outlet, from the gas vent be discharged refrigerant intermediate pressure, from the gas vent arrange
At least one of medium temperature of refrigerant out.
The control method of single cold type air conditioner according to an embodiment of the present invention, by the aperture for first adjusting first throttle element
Then the aperture of the second restricting element is adjusted again, so that the efficiency of system is optimal.
In some embodiments of the invention, first test object and second test object are outdoor environment
First throttle member is calculated according to the outdoor environment temperature T4 and running frequency F that detect in temperature T4 and running frequency F
Then the setting aperture of part and the second restricting element adjusts corresponding first throttle element and the second throttling member according to setting aperture
The aperture of part.
In some embodiments of the invention, first test object is outdoor environment temperature T4 and running frequency F, first
The setting aperture of first throttle element is first calculated according to the outdoor environment temperature T4 and the running frequency F, then root
The aperture of the first throttle element is adjusted according to setting aperture；Second test object is outdoor environment temperature T4, runs frequency
Rate F and pressure at expulsion；Or second test object is outdoor environment temperature T4, running frequency F and delivery temperature, first root
Setting pressure at expulsion or setting delivery temperature is calculated according to the outdoor environment temperature T4 and the running frequency F, then
According to it is actually detected to pressure at expulsion or delivery temperature adjust the second restricting element aperture so that the exhaust detected
Pressure or delivery temperature reach setting pressure at expulsion or setting delivery temperature.
In some embodiments of the invention, multiple outdoor temperature sections are preset, each outdoor temperature section is corresponding
The aperture of different restricting elements, the first test object is outdoor environment temperature T4, according to the actually detected outdoor environment temperature arrived
The aperture of the corresponding opening value adjustment first throttle element in outdoor temperature section where spending T4；Second test object is room
External environment temperature T4, running frequency F and pressure at expulsion；Or second test object is outdoor environment temperature T4, operation frequency
Rate F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency F be calculated setting pressure at expulsion or
Person sets delivery temperature, and the aperture of the second restricting element is then adjusted according to the actually detected pressure at expulsion arrived or delivery temperature
So that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting delivery temperature.
In some embodiments of the invention, medium temperature or default intermediate pressure, first test object are preset
For intermediate pressure, perhaps medium temperature adjusts first throttle element according to the actually detected intermediate pressure arrived or medium temperature
Aperture is so that the intermediate pressure or medium temperature that detect reach default intermediate pressure or default medium temperature；Described
Two test objects are outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object is outdoor environment
Temperature T4, running frequency F and delivery temperature are calculated according to the outdoor environment temperature T4 and the running frequency F first
Then setting pressure at expulsion perhaps sets delivery temperature according to the actually detected pressure at expulsion arrived or delivery temperature adjustment second
The aperture of restricting element is so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting exhaust temperature
Degree.
In some embodiments of the invention, medium temperature or default intermediate pressure, first test object are preset
For intermediate pressure, perhaps medium temperature adjusts first throttle element according to the actually detected intermediate pressure arrived or medium temperature
Aperture is so that the intermediate pressure or medium temperature that detect reach default intermediate pressure or default medium temperature；Described
Two test objects are outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and operation frequency
The setting aperture of the second restricting element is calculated in rate F, and the aperture of second restricting element is then adjusted according to setting aperture.
In some embodiments of the invention, multiple outdoor temperature sections are preset, each outdoor temperature section is corresponding
The aperture of different restricting elements, the first test object is outdoor environment temperature T4, according to the actually detected outdoor environment temperature arrived
The aperture of the corresponding opening value adjustment first throttle element in outdoor temperature section where spending T4；Second test object is room
External environment temperature T4 and running frequency F is calculated second according to the outdoor environment temperature T4 and the running frequency F first
Then the setting aperture of restricting element adjusts the aperture of second restricting element according to setting aperture.
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 solenoid valve of the embodiment of the present invention；
Fig. 3 is the schematic diagram according to the duplex cylinder compressor of the embodiment of the present invention；
Fig. 4 is the flow chart according to the control method of 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,
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. 3, wherein single cold type is empty
Adjust device 100 that there is refrigeration mode.
As shown in Figure 1-Figure 3, 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 and the second restricting element 7.Wherein duplex cylinder compressor 1
Including shell 10, the first cylinder 11, the second cylinder 12, the first liquid storage device 13 and the second liquid storage device 14, shell 10 is equipped with exhaust
Mouth 15, the first cylinder 11 and the second cylinder 12 are respectively provided in shell 10, and the first liquid storage device 13 and the second liquid storage device 14 are located at shell
Outside body 10, the air entry of the first cylinder 11 is connected to the first liquid storage device 13, the air entry of the second cylinder 12 and the second liquid storage device 14
Connection.That is, the first cylinder 11 and the second cylinder 12 carry out independent compression process, separated from the first liquid storage device 13
Gas coolant, which is drained into the first cylinder 11, to be compressed, and the gas coolant separated from the second liquid storage device 14 is drained into second
It is compressed, is discharged from the compressed refrigerant of the first cylinder 11 discharge and from the second cylinder 12 compressed cold in cylinder 12
Matchmaker is drained into shell 10 respectively and is then discharged from exhaust outlet 15.
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, and gas vent m is connected with the second liquid storage device 14,
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, and first connects
It is in series with the adjustable first throttle element 6 of aperture between mouth f and outdoor heat exchanger 3, between second interface g and indoor heat exchanger 4
It is in series with adjustable second restricting element 7 of aperture.Optionally, first throttle element 6 is electric expansion valve, the second restricting element 7
For electric expansion valve, it is of course possible to which understanding, first throttle element 6 and the second restricting element 7 can also be other apertures
Adjustable element such as heating power expansion valve.
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, the high-pressure liquid refrigerant being discharged from outdoor heat exchanger 3 passes through first throttle element 6
Level-one reducing pressure by regulating flow after the intermediate pressure for carrying out gas-liquid separation, separating is drained into gas-liquid separator 5 from first interface f
Gaseous coolant is drained into the second liquid storage device 14 from gas vent m and carries out further gas-liquid separation, and gaseous coolant is from second later
Liquid storage device 14, which is drained into the second cylinder 12, 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.
It follows that the refrigerant of different pressures state has respectively entered the first cylinder when single cold type air conditioner 100 is run
11 and second in cylinder 12,12 complete independently compression process of the first cylinder 11 and the second cylinder, the pressure being discharged from the first cylinder 11
Refrigerant after contracting and being discharged to from the compressed refrigerant that the second cylinder 12 is discharged is discharged after mixing in shell 10 from exhaust outlet 15, together
When due to the value range of the second cylinder 12 and the delivery space ratio of the first cylinder 11 be 1%~10%, flow it is less and press
The higher refrigerant of power state, which is drained into lesser second cylinder 12 of delivery space, to be compressed, so as to improve efficiency, section
It can 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.
It is further so as to be carried out to the refrigerant being discharged from gas-liquid separator 5 again due to being provided with the second liquid storage device 14
Gas-liquid separation can further avoid liquid coolant and return in the second cylinder 12, so that it is existing to avoid duplex cylinder compressor 1 that liquid hammer occurs
As improving the service life of duplex cylinder compressor 1.
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, further through the second liquid storage device 14 of setting, can extend twin-tub pressure
The service life of contracting machine.
As shown in Fig. 2, in some embodiments of the invention, being in series with electricity between gas vent m and the second liquid storage device 14
Magnet valve 20 can be to avoid liquid by closing solenoid valve 20 thus when the liquid coolant in gas-liquid separator 5 exceeds safety levels
State refrigerant enters in the second cylinder 12, so as to avoid duplex cylinder compressor 1 that liquid hammer occurs, extends making for duplex cylinder compressor 1
Use the service life.It is possible to further which liquid level sensor is being arranged on gas-liquid separator 5, pass through the testing result of liquid level sensor
Control the open and-shut mode of solenoid valve 20.
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, the volume of the first liquid storage device 13 is greater than the volume of the second liquid storage device 14.To
Under the premise of guaranteeing the decrement of the second cylinder 12, by making the volume of the second liquid storage device 14 smaller, cost can be reduced.
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. 4, wherein
Single cold type air conditioner is the single cold type air conditioner according to the above embodiment of the present invention.
Control method according to an embodiment of the present invention includes the following steps: first according to the detection knot to the first test object
Fruit adjusts the aperture of first throttle element, then adjusts opening for the second restricting element according to the testing result to the second test object
Degree, the setting aperture of first throttle element less than the second restricting element setting aperture, the testing result of the first test object and
The testing result of second test object is different.It needs to be illustrated, the testing result of the first test object and the second detection
The testing result difference of object refer to first throttle element and the second restricting element cannot simultaneously using same state parameter into
Row adjusts control, in other words, for adjusting the required relevant parameter of first throttle element and for adjusting the second restricting element
Required relevant parameter it is different.
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.Second test object includes the row of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet
Temperature degree, the pressure at expulsion of exhaust outlet, the intermediate pressure for the refrigerant being discharged from gas vent, the refrigerant that is discharged from gas vent
At least one of medium temperature.
That is, as shown in figure 4, acquisition process controls first throttle element and the in the operation of single cold type air conditioner
Then parameter needed for two restricting elements is all first to adjust the aperture of first throttle element until setting is opened according to obtained parameter
Then degree adjusts the aperture of the second restricting element until aperture is set, when first throttle element and the second restricting element are adjusted again
When section to setting aperture, the aperture of the aperture of first throttle element less than the second restricting element.Of course, it should be understood that acquisition
The step of parameter needed for parameter and acquisition process needed for processing control first throttle element control the second restricting element, can be with
It carries out successively carrying out simultaneously.
After the aperture of first throttle element and the aperture of the second restricting element are all satisfied condition, can operation n seconds after,
Again the first test object and the second test object are detected, then adjusts first throttle element and the second throttling according to testing result
The aperture of element so repeats.Certain repeat condition is without being limited thereto, such as can be after receiving the operational order of user, weight
Then the first test object of new detection and the second test object adjust first throttle element and the second throttling member according to testing result
The aperture of part.In other words, freezing, after the aperture of first throttle element and the second restricting element is all satisfied condition, Ke Yi
Operation n seconds or after receiving the operation signal of user, to the correlation of the aperture of first throttle element and the second restricting element
Parameter detects judgement again, then according to the aperture for determining result adjustment first throttle element and the second restricting element, so weight
It is multiple.
The control method of single cold type air conditioner according to an embodiment of the present invention, by the aperture for first adjusting first throttle element
Then the aperture of the second restricting element is adjusted again, so that the efficiency of system is optimal.
The control method of several specific embodiments according to the present invention is described below.
Embodiment 1:
In this embodiment, the first test object and the second test object are outdoor environment temperature T4 and running frequency F,
The setting of first throttle element and the second restricting element is calculated according to the outdoor environment temperature T4 and running frequency F that detect
Then aperture adjusts the aperture of corresponding first throttle element and the second restricting element according to setting aperture.
It is understood that calculation formula is located in advance in the electric control element of single cold type air conditioner, calculation formula can root
It is specifically limited according to actual conditions.
Specifically, when refrigeration, the aperture LA_cool_1 and outdoor environment temperature T4 and running frequency F of first throttle element
Between relational expression are as follows: LA_cool_1=a1·F+b1T4+c1, when the aperture LA_cool_1 of calculating is greater than the first segment of acquisition
When the practical aperture of fluid element, the aperture of first throttle element is increased into calculating aperture；Otherwise it turns down.
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element are as follows:
LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is greater than the practical aperture of the second restricting element of acquisition
When, the aperture of the second restricting element is increased into calculating aperture；Otherwise it turns down.Wherein, 0≤a1≤ 20,0≤b1≤ 20, -50≤
c1≤100；0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤ 150 control coefrficient a, b, c can be 0, when any one is
When number is zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
Such as in refrigeration, detects that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz, set a1=1,
b1=1.6, c1=6；a2=1.5, b2=1.6, c2=17.System calculates first according to collected frequency and T4 value first
The aperture of restricting element should be 120, adjust the aperture of first throttle element to 120；Then the second restricting element is calculated
Aperture is 160, adjusts the aperture of the second restricting element to 160.After the aperture 200s for maintaining two restricting elements, detection is pressed again
Contracting machine running frequency and T4 value；Or the adjustment according to user to air-conditioning, compressor operating frequency and T4 value are detected, to first segment
Fluid element and the second restricting element are readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 2:
In this embodiment, the first test object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment
The setting aperture of first throttle element is calculated in temperature T4 and running frequency F, then adjusts first throttle according to setting aperture
The aperture of element；
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object be room
External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first
Determine pressure at expulsion and perhaps sets delivery temperature then according to the actually detected pressure at expulsion arrived or delivery temperature the second section of adjustment
The aperture of fluid element is so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting exhaust temperature
Degree.
Specifically, when refrigeration, the aperture LA_cool_1 and outdoor environment temperature T4 and running frequency F of first throttle element
Between relational expression are as follows: LA_cool_1=a1·F+b1T4+c1, when the aperture LA_cool_1 of calculating is greater than the first segment of acquisition
When the practical aperture of fluid element, the aperture of first throttle element is increased into calculating aperture；Otherwise it turns down.
When the second test object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it
Between relational expression are as follows: TP_cool=a2·F+b2T4+c2, when the second test object includes pressure at expulsion, pressure at expulsion P row with
Relational expression between outdoor environment temperature T4 and running frequency F are as follows: P row _ cool=a3·F+b3T4+c3, when collected exhaust
When temperature or pressure at expulsion are greater than the setting delivery temperature calculated or setting pressure at expulsion, opening for big second restricting element is opened
Degree；Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤
150,0≤a3≤ 30,0≤b3≤ 30, -50≤c3≤150.Control coefrficient a, b, c can be 0, when any one coefficient is
When zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
Such as in refrigeration, detects that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz, set a1=1,
b1=1.6, c1=6；a2=0.5, b2=0.4, c2=31；a3=0.25, b3=0.2, c2=3.9.System first is according to collecting
Frequency and T4 value, the aperture for calculating first throttle element for 120, should adjust the aperture of first throttle element to 120, so
System is according to the frequency and T4 value used afterwards, calculate the corresponding delivery temperature TP_cool of the second restricting element be 74 DEG C or
Person's pressure at expulsion P row _ cool is 2.54MPa, at this moment teases and ridicule whole second according to the delivery temperature TP or pressure at expulsion P that detect
The aperture of restricting element, when the delivery temperature detected is greater than 74 DEG C (or the pressure at expulsion P row detected is greater than 2.54Mpa)
When, gradually increase the aperture (movement of 4 steps can be adjusted by each) of the second restricting element.Maintain the aperture 200s of two restricting elements
Afterwards, detect compressor operating frequency and T4 value, or the adjustment according to user to air-conditioning again, detection compressor operating frequency and
T4 value readjusts first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 3:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different restricting elements
Aperture, the first test object be outdoor environment temperature T4, the outdoor where the actually detected outdoor environment temperature T4 arrived
The aperture of the corresponding opening value adjustment first throttle element of temperature range；
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object be room
External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first
Determine pressure at expulsion and perhaps sets delivery temperature then according to actually detected to the second throttling of pressure at expulsion or delivery temperature adjustment
The aperture of element is so that detect that pressure at expulsion or delivery temperature reach setting pressure at expulsion or setting delivery temperature.
Specifically, when refrigeration, the concrete condition of the aperture of the corresponding first throttle element in different outdoor temperature sections is such as
Following table:
When the second test object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it
Between relational expression are as follows: TP_cool=a1·F+b1T4+c1, when the second test object includes pressure at expulsion, pressure at expulsion P row with
Relational expression between outdoor environment temperature T4 and running frequency F are as follows: P row _ cool=a2·F+b2T4+c2, when collected exhaust
When temperature or pressure at expulsion are greater than the setting delivery temperature calculated or setting pressure at expulsion, opening for big second restricting element is opened
Degree；Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤
150.Control coefrficient a, b, c can be 0, when any one coefficient is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling
Element aperture is without influence.
For example, detection outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz when refrigeration, a is set1=0.5, b1
=0.4, c1=31；a2=0.25, b2=0.2, c2=3.9.System first obtains according to outdoor environment temperature T4 is collected
The aperture of one restricting element should be 120, adjust the aperture of first throttle element to 120；Then system is according to frequency and T4 value,
Calculate that the corresponding delivery temperature TP_cool of the second restricting element is 74 DEG C or pressure at expulsion P row _ cool is 2.54MPa, this
When the aperture of the second restricting element is adjusted according to the delivery temperature TP or pressure at expulsion P that detect, such as the row detected
When temperature degree is greater than 74 DEG C (or the pressure at expulsion P row detected is greater than 2.54Mpa), opening for the second restricting element is gradually increased
Degree (can adjust the movement of 4 steps by each).After the aperture 200s for maintaining two restricting elements, again detect compressor operating frequency and
T4 value, or the adjustment according to user to air-conditioning detect compressor operating frequency and T4 value, to first throttle element and the second section
Fluid element is readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 4:
In this embodiment, presetting medium temperature, perhaps the first test object of intermediate pressure is intermediate pressure or centre
Temperature, according to it is actually detected to intermediate pressure or medium temperature adjustment first throttle element aperture so that detecting
Intermediate pressure or medium temperature reach default intermediate pressure or default medium temperature.
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object be room
External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first
Determine pressure at expulsion and perhaps sets delivery temperature then according to actually detected to the second throttling of pressure at expulsion or delivery temperature adjustment
The aperture of element is so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting delivery temperature.
Specifically, when refrigeration, the value interval of preset medium temperature can be 20 DEG C -35 DEG C, preset intermediate pressure
Value interval can be 0.8MPa-2.0MPa.When detecting intermediate pressure or medium temperature lower than setting value, open big by the
The aperture of one restricting element, on the contrary it turns down.
When the second test object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it
Between relational expression are as follows: TP_cool=a1·F+b1T4+c1, when the second test object includes pressure at expulsion, pressure at expulsion P row with
Relational expression between outdoor environment temperature T4 and running frequency F are as follows: P row _ cool=a2·F+b2T4+c2, when collected exhaust
When temperature or pressure at expulsion are greater than the setting delivery temperature calculated or setting pressure at expulsion, opening for big second restricting element is opened
Degree；Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤
150.Control coefrficient a, b, c can be 0, when any one coefficient is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling
Element aperture is without influence.
Such as when refrigeration, medium temperature is set as 26 DEG C or sets intermediate pressure 1.65MPa, detects outdoor environment temperature
Degree is 35 DEG C, compressor operating frequency 58Hz, sets a1=0.5, b1=0.4, c1=31；a2=0.25, b2=0.2, c2=
3.9.Firstly, system is according to collected medium temperature or the aperture of intermediate pressure value adjustment first throttle element.Work as acquisition
The medium temperature arrived gradually turns down first throttle element greater than 26 DEG C or when collected intermediate pressure is greater than 1.65MPa
Aperture (can adjust the movement of 4 steps by each).Otherwise turn aperture down.Then system calculates the second throttling according to frequency and T4 value
The corresponding delivery temperature TP_cool of element is 74 DEG C or pressure at expulsion P row _ cool is 2.54MPa, and at this moment basis detects
Delivery temperature TP perhaps pressure at expulsion P adjust the second restricting element aperture when detect delivery temperature be greater than 74 DEG C (or inspection
The pressure P row measured is greater than 2.54Mpa) when, gradually increase the aperture (movement of 4 steps can be adjusted by each) of the second restricting element.
After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 value are detected again, or according to user to air-conditioning
Adjustment, detect compressor operating frequency and T4 value, first throttle element and the second restricting element readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 5:
In this embodiment, presetting medium temperature, perhaps the first test object of intermediate pressure is intermediate pressure or centre
Temperature, according to it is actually detected to intermediate pressure or medium temperature adjustment first throttle element aperture so that detecting
Intermediate pressure or medium temperature reach default intermediate pressure or default medium temperature；
Second test object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment temperature T4 and operation
The setting aperture of the second restricting element is calculated in frequency F, and the aperture of the second restricting element is then adjusted according to setting aperture.
Specifically, the value interval of preset medium temperature can be 20 DEG C -35 DEG C when refrigeration, preset intermediate pressure
Value interval can be 0.8MPa-1.5MPa.When detecting intermediate pressure or temperature lower than setting value, big first throttle is opened
The aperture of element, on the contrary it turns down.
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element are as follows:
LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is greater than the practical aperture of the second restricting element of acquisition
When, the aperture of the second restricting element is increased into calculating aperture；Otherwise it turns down.Wherein, 0≤a2≤ 30,0≤b2≤ 30, -50≤
c2≤ 150, control coefrficient a, b, c can be 0, when any one coefficient is zero, it was demonstrated that the corresponding parameter pair of the coefficient
Restricting element aperture is without influence.
Such as when refrigeration, medium temperature is set as 26 DEG C or sets intermediate pressure 1.65MPa, detects outdoor environment temperature
Degree is 35 DEG C, compressor operating frequency 58Hz, sets a2=1.5, b2=1.6, c2=17.Firstly, system is according to collected
The aperture of medium temperature or intermediate pressure value adjustment first throttle element.When collected medium temperature is greater than 26 DEG C or adopts
When the intermediate pressure collected is greater than 1.65MPa, the aperture (movement of 4 steps can be adjusted by each) of first throttle element is gradually turned down.
Otherwise turn aperture down.Then system is according to detecting that outdoor environment temperature and compressor operating frequency calculate the second restricting element
Set aperture as 160, then adjust the aperture of the second restricting element to 160.After the aperture 200s for maintaining two restricting elements,
Again compressor operating frequency and T4 value, or the adjustment according to user to air-conditioning are detected, compressor operating frequency and T4 are detected
Value, readjusts first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 6:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different restricting elements
Aperture, the first test object be outdoor environment temperature T4, the outdoor where the actually detected outdoor environment temperature T4 arrived
The aperture of the corresponding opening value adjustment first throttle element of temperature range.
Second test object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment temperature T4 and operation
The setting aperture of the second restricting element is calculated in frequency F, and the aperture of the second restricting element is then adjusted according to setting aperture.
Specifically, when refrigeration, the concrete condition of the aperture of the corresponding first throttle element in different outdoor temperature sections is such as
Following table:
| T4 | Aperture |
| 10≤T4 < 20 | 100 |
| 20≤T4 < 30 | 110 |
| 30≤T4 < 40 | 120 |
| 40≤T4 < 50 | 150 |
| 50≤T4 < 60 | 180 |
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element are as follows:
LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is greater than the practical aperture of the second restricting element of acquisition
When, the aperture of the second restricting element is increased into calculating aperture；Otherwise it turns down.Wherein, 0≤a2≤ 30,0≤b2≤ 30, -50≤
c2≤ 150, control coefrficient a, b, c can be 0, when any one coefficient is zero, it was demonstrated that the corresponding parameter pair of the coefficient
Restricting element aperture is without influence.
For example, detecting that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz when refrigeration, setting a2=
1.5,b2=1.6, c2=17.Firstly, system obtains opening for first throttle element according to outdoor environment temperature T4 is collected first
Degree should be 120, adjust the aperture of first throttle element to 120.Then system is according to detecting outdoor environment temperature and compression
What machine running frequency calculated the second restricting element sets aperture as 160, then adjusts the aperture of the second restricting element to 160.
After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 value are detected again, or according to user to air-conditioning
Adjustment, detect compressor operating frequency and T4 value, first throttle element and the second restricting element readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
It is understood that the specific example explanation that above-mentioned six embodiments are merely given as, the control of the embodiment of the present invention
Method is not limited to above-mentioned six kinds, such as can be by the tune of the aperture of first throttle element and the second restricting element in six kinds of examples
Section mode carries out random combine；Or the compressor operating frequency in above-described embodiment can also by it is actually detected to outdoor ring
Border temperature obtains, such as presets multiple outdoor environment temperature sections, and multiple outdoor environment temperature sections correspond to different compressors
Running frequency.
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 single cold type air conditioner characterized by comprising
Duplex cylinder compressor, the duplex cylinder compressor include shell, the first cylinder, the second cylinder, the first liquid storage device and the second liquid storage
Device, the shell are equipped with exhaust outlet, and first cylinder and second cylinder are respectively provided in the shell, and described first
Liquid storage device and second liquid storage device are located at outside the shell, and the air entry of first cylinder and first liquid storage device connect
Logical, the air entry of second cylinder is connected to second liquid storage device, the exhaust of second cylinder and first cylinder
The value range of volume ratio is 1%~9%；
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 interface and second interface, the gas vent and institute
State the second liquid storage device be connected, the first interface is connected with the second end of the outdoor heat exchanger, the second interface with it is described
The second end of indoor heat exchanger is connected, and the adjustable first segment of aperture is in series between the first interface and the outdoor heat exchanger
Fluid element is in series with adjustable second restricting element of aperture between the second interface and the indoor heat exchanger；The Dan Leng
Type air conditioner includes electronic control unit, and the electronic control unit is configured to: first according to the testing result tune to the first test object
The aperture of the whole first throttle element is to aperture is set, then according to the testing result of the second test object adjustment described the
The aperture of two restricting elements is less than setting for second restricting element to aperture, the setting aperture of the first throttle element is set
Determine aperture, the testing result of first test object is different from the testing result of second test object；
Wherein 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 the gas vent be discharged refrigerant intermediate pressure, from the gas vent be discharged it is cold
At least one of medium temperature of matchmaker；
Second test object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, the delivery temperature of exhaust outlet, row
The pressure at expulsion of port, the intermediate pressure for the refrigerant being discharged from the gas vent, the refrigerant that is discharged from the gas vent
At least one of medium temperature.
2. single cold type air conditioner according to claim 1, which is characterized in that the first throttle element is electronic expansion
Valve, second restricting element are electric expansion valve.
3. single cold type air conditioner according to claim 1, which is characterized in that the gas vent and second liquid storage device
Between be in series with solenoid valve.
4. single cold type air conditioner according to claim 1, which is characterized in that the value model of the volume of the gas-liquid separator
It encloses for 100mL-500mL.
5. single cold type air conditioner described in any one of -4 according to claim 1, which is characterized in that the appearance of first liquid storage device
Product is greater than the volume of second liquid storage device.
6. a kind of control method of single cold type air conditioner as claimed in one of claims 1-5, which is characterized in that including as follows
Step: the aperture of the first throttle element is adjusted to aperture is set, so according to the testing result of the first test object first
The aperture of second restricting element is adjusted to setting aperture, the first segment according to the testing result of the second test object afterwards
The setting aperture of fluid element is less than the setting aperture of second restricting element, the testing result of first test object and institute
The testing result for stating the second test object is different；
Wherein 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 the gas vent be discharged refrigerant intermediate pressure, from the gas vent be discharged it is cold
At least one of medium temperature of matchmaker；
Second test object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, the delivery temperature of exhaust outlet, row
The pressure at expulsion of port, the intermediate pressure for the refrigerant being discharged from the gas vent, the refrigerant that is discharged from the gas vent
At least one of medium temperature.
7. the control method of single cold type air conditioner according to claim 6, which is characterized in that first test object is
Outdoor environment temperature T4 and running frequency F is calculated according to the outdoor environment temperature T4 and the running frequency F first
Then the setting aperture of one restricting element adjusts the aperture of the first throttle element according to setting aperture；
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object
For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency
F is calculated setting pressure at expulsion and perhaps sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature
Degree adjustment the second restricting element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or
Set delivery temperature.
8. the control method of single cold type air conditioner according to claim 6, which is characterized in that preset multiple outdoor temperature areas
Between, each outdoor temperature section corresponds to the aperture of different restricting elements,
First test object is outdoor environment temperature T4, the outdoor temperature where the actually detected outdoor environment temperature T4 arrived
The aperture of the corresponding opening value adjustment first throttle element in section；
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object
For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency
F is calculated setting pressure at expulsion and perhaps sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature
Degree adjustment the second restricting element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or
Set delivery temperature.
9. the control method of single cold type air conditioner according to claim 6, which is characterized in that default medium temperature is pre-
If intermediate pressure, first test object is intermediate pressure or medium temperature, according to the actually detected intermediate pressure arrived or
The aperture of person's medium temperature adjustment first throttle element so that the intermediate pressure or medium temperature that detect reach default in
Between pressure or default medium temperature；
Second test object is outdoor environment temperature T4, running frequency F and pressure at expulsion；Or second test object
For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency
F is calculated setting pressure at expulsion and perhaps sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature
Degree adjustment the second restricting element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or
Set delivery temperature.
10. the control method of single cold type air conditioner according to claim 6, which is characterized in that default medium temperature or
Default intermediate pressure, first test object is intermediate pressure or medium temperature, according to the actually detected intermediate pressure arrived
Either the aperture of medium temperature adjustment first throttle element is so that the intermediate pressure or medium temperature that detect reach default
Intermediate pressure or default medium temperature；
Second test object is outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and
The setting aperture of the second restricting element is calculated in the running frequency F, then according to setting aperture adjustment second throttling
The aperture of element.
11. the control method of single cold type air conditioner according to claim 6, which is characterized in that preset multiple outdoor temperatures
Section, each outdoor temperature section correspond to the aperture of different restricting elements,
First test object is outdoor environment temperature T4, the outdoor temperature where the actually detected outdoor environment temperature T4 arrived
The aperture of the corresponding opening value adjustment first throttle element in section；
Second test object is outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and
The setting aperture of the second restricting element is calculated in the running frequency F, then according to setting aperture adjustment second throttling
The aperture of element.
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|---|---|---|---|
| CN201610281871.4A CN105783303B (en) | 2016-04-29 | 2016-04-29 | Single cold type air conditioner and its control method |
| PCT/CN2016/087936 WO2017185517A1 (en) | 2016-04-29 | 2016-06-30 | Cooling and heating air conditioner, cooling-only air conditioner, and control method for air conditioner |
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|---|---|---|---|
| CN201610281871.4A CN105783303B (en) | 2016-04-29 | 2016-04-29 | Single cold type air conditioner and its control method |
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| CN115247922A (en) * | 2022-06-27 | 2022-10-28 | 浙江中广电器集团股份有限公司 | Automatic control method for preventing refrigerant of compressor from flowing back to flash tank |
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|---|---|---|---|---|
| EP0890804A2 (en) * | 1997-07-10 | 1999-01-13 | Denso Corporation | Refrigerant cycle system |
| CN101978226A (en) * | 2008-03-18 | 2011-02-16 | 大金工业株式会社 | Refrigeration apparatus |
| CN103557624A (en) * | 2013-10-11 | 2014-02-05 | 广东美芝制冷设备有限公司 | Refrigeration cycling device |
| CN204630128U (en) * | 2015-02-03 | 2015-09-09 | 广东美芝制冷设备有限公司 | Refrigeration system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5627620B2 (en) * | 2012-02-29 | 2014-11-19 | 日立アプライアンス株式会社 | Air conditioner |
| CN105202796B (en) * | 2015-10-10 | 2016-08-17 | 广东美芝制冷设备有限公司 | Air conditioning system and there is its air-conditioner |
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- 2016-04-29 CN CN201610281871.4A patent/CN105783303B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0890804A2 (en) * | 1997-07-10 | 1999-01-13 | Denso Corporation | Refrigerant cycle system |
| CN101978226A (en) * | 2008-03-18 | 2011-02-16 | 大金工业株式会社 | Refrigeration apparatus |
| CN103557624A (en) * | 2013-10-11 | 2014-02-05 | 广东美芝制冷设备有限公司 | Refrigeration cycling device |
| CN204630128U (en) * | 2015-02-03 | 2015-09-09 | 广东美芝制冷设备有限公司 | Refrigeration system |
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