CN106196778B - A kind of coolant circulating system and its control method - Google Patents
A kind of coolant circulating system and its control method Download PDFInfo
- Publication number
- CN106196778B CN106196778B CN201610765266.4A CN201610765266A CN106196778B CN 106196778 B CN106196778 B CN 106196778B CN 201610765266 A CN201610765266 A CN 201610765266A CN 106196778 B CN106196778 B CN 106196778B
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- refrigerant
- matchmaker
- temperature
- valve
- circulation circuit
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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
- F25B45/00—Arrangements for charging or discharging refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—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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- 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
Abstract
The present invention discloses a kind of coolant circulating system and its control method, is related to technical field of refrigeration equipment.To solve the problem of that the coolant quantity in prior art refrigerant circulation circuit cannot be automatically adjusted the refrigeration for preventing coolant circulating system or heating operations from inventing in optimum state.Coolant circulating system of the invention includes the compressor for being sequentially connected and constituting refrigerant circulation circuit, condenser, throttle valve, evaporator and fluid reservoir, it further include refrigerant storage device, it is connected with to fill matchmaker's pipe and return matchmaker between refrigerant storage device and refrigerant circulation circuit and manage, it fills on matchmaker's pipe to be serially connected with and fills matchmaker's valve, it returns on matchmaker's pipe and is serially connected with back matchmaker's valve, it further include detection system and control unit, detection system is used to detect the refrigerant parameter in refrigerant circulation circuit, control unit is used for the testing result according to detection system, and control, which is opened, fills matchmaker's valve or time matchmaker's valve.Coolant circulating system of the present invention can be used for automatically adjusting the coolant quantity in refrigerant circulation circuit.
Description
Technical field
The present invention relates to technical field of refrigeration equipment more particularly to a kind of coolant circulating system and its control methods.
Background technique
In the equipment such as the refrigeration unit of air conditioner, refrigerator, refrigerator and large size, coolant circulating system is to form cooling capacity or heat
The key structure of amount, compressor, condenser, throttle valve, evaporator and storage including being sequentially connected and being formed refrigerant circulation circuit
Flow container etc..This refrigerant circulation circuit is according to ambient temperature, the difference of cooling and warming state, and used coolant quantity is not yet
Together, for example, in process of refrigerastion, the refrigerant circulation circuit of air conditioner used coolant quantity when ambient temperature is 42 DEG C
Greater than coolant quantity used when external environment is 25 DEG C, for another example, air-conditioner coolant circulation loop is used in heating
Coolant quantity be greater than the used coolant quantity in refrigeration, and the coolant quantity injected in existing refrigerant circulation circuit is fixed,
It can not automatically adjust, so that the refrigeration or heating operations that prevent refrigerant circulation circuit are from optimum state.
In order to avoid the above problem, a solution for being widely used at present are as follows: using electric expansion valve as throttling
The refrigerant in refrigerant circulation circuit is adjusted in valve, the detailed process of adjusting are as follows: when the temperature of refrigerant in refrigerant circulation circuit
When excessively high or pressure is excessive, it is depressured, cools down by tuning up the aperture of electric expansion valve；When the temperature of refrigerant in refrigerant circulation circuit
Spend low or pressure it is too small when, be pressurized, heat by turning the aperture of electric expansion valve down, make system be similarly in one it is best
State.
But since the aperture regulation ability of electric expansion valve is limited, adjustable range is smaller, therefore in refrigerant circulation circuit
When front and back is differed greatly using coolant quantity, be not able to satisfy regulatory demand, thus cannot still make coolant circulating system refrigeration or
Heating operations are in an optimum state.
Summary of the invention
The present invention provides a kind of coolant circulating system and its control method, can automatically adjust cold in refrigerant circulation circuit
Matchmaker's amount, makes the refrigeration of coolant circulating system or heating operations be in optimum state.
In order to achieve the above objectives, the present invention provides a kind of coolant circulating systems, including are sequentially connected and constitute refrigerant and follow
Compressor, condenser, throttle valve, evaporator and the fluid reservoir of loop back path further include refrigerant storage device, the refrigerant storage dress
Set be connected between the refrigerant circulation circuit fill matchmaker pipe and return matchmaker pipe, it is described fill on matchmaker's pipe to be serially connected with fill matchmaker's valve, it is described
It returns on matchmaker's pipe and is serially connected with back matchmaker's valve, further include detection system and control unit, the detection system is for detecting the refrigerant
Refrigerant parameter in circulation loop, described control unit are used for the testing result according to the detection system, judge the refrigerant
Whether the coolant quantity in circulation loop is short of or excessively, when the coolant quantity shortcoming in the refrigerant circulation circuit, control is opened
Described to fill matchmaker's valve, the refrigerant in the refrigerant storage device is filled in the refrigerant circulation circuit by the matchmaker's pipe that fills, and works as institute
When stating the refrigerant excess in refrigerant circulation circuit, control open it is described return matchmaker's valve, the refrigerant in the refrigerant circulation circuit by
Described time matchmaker's pipe is recycled in the refrigerant storage device.
The embodiment of the invention also provides a kind of control methods of coolant circulating system, and it is real which is based on the present invention
A kind of coolant circulating system of example offer is provided, comprising the following steps:
Detection system detects the refrigerant parameter in refrigerant circulation circuit；
The refrigerant parameter that control unit is detected according to the detection system judges that the refrigerant in the refrigerant circulation circuit is
No shortcoming or excess；
When the refrigerant shortcoming in the refrigerant circulation circuit, matchmaker's valve is filled described in control unit control opening, when described
When refrigerant excess in refrigerant circulation circuit, control unit then controls that opening is described to return matchmaker's valve.
A kind of coolant circulating system provided by the invention and its control method, detection system detect to obtain refrigerant circulation circuit
In refrigerant parameter after, the refrigerant parameter that control unit is detected according to detection system judges that the refrigerant in coolant circulating system is
No shortcoming or excess, when the refrigerant shortcoming in refrigerant circulation circuit, control unit, which then controls, fills matchmaker's valve described in opening, so that cold
Refrigerant in matchmaker's storage device is filled in refrigerant circulation circuit by filling matchmaker's pipe, when the refrigerant excess in refrigerant circulation circuit, control
Unit processed, which then controls, opens back matchmaker's valve, so that the refrigerant in refrigerant circulation circuit is recycled to refrigerant storage device by returning matchmaker's pipe
It is interior, it is thus achieved that in refrigerant circulation circuit coolant quantity automatic adjustment.Compared with prior art, the refrigerant of the embodiment of the present invention
Adjustable range is unrestricted, therefore can guarantee that the refrigeration of coolant circulating system or heating operations are in optimum state always.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of coolant circulating system of the embodiment of the present invention；
Fig. 2 (a) is structural schematic diagram of the coolant circulating system of the embodiment of the present invention in refrigerating state；
Fig. 2 (b) is structural schematic diagram of the coolant circulating system of the embodiment of the present invention in the state of heating；
Fig. 3 is the flow diagram of the control method of coolant circulating system of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.?
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Coolant circulating system includes that the refrigerant circulation being made of compressor, condenser, throttle valve, evaporator and fluid reservoir returns
Road, wherein compressor includes muffler and exhaust pipe, for the gaseous coolant of low-temp low-pressure to be compressed into the gaseous state of high temperature and pressure
Refrigerant, and the gaseous coolant of this high temperature and pressure is expelled to by condenser by exhaust pipe, condenser is used for the gas of high temperature and pressure
State refrigerant is condensed into the liquid refrigerants of cryogenic high pressure, and is sent to throttle valve, throttle valve can liquid refrigerants to high temperature and pressure into
Row decompression to generate the liquid refrigerants of low-temp low-pressure, and be sent to evaporator be evaporated it is cold to generate the gaseous state of low-temp low-pressure
Matchmaker, the gaseous coolant of this low-temp low-pressure carry out being back to compression after gas-liquid separation in the fluid reservoir in compressor return air pipe
Machine, to carry out next circulation.
Referring to Fig.1, Fig. 1 is a specific embodiment of coolant circulating system of the embodiment of the present invention, the refrigerant of the present embodiment
The circulatory system includes the compressor 11 for being sequentially connected and constituting refrigerant circulation circuit 1, condenser 12, throttle valve 13, evaporator 14
Further include refrigerant storage device 2 with fluid reservoir 15, is connected between the refrigerant storage device 2 and the refrigerant circulation circuit 1
Fill matchmaker's pipe 3 and return matchmaker's pipe 4, it is described fill on matchmaker's pipe 3 to be serially connected with fill matchmaker's valve 31, be serially connected with back matchmaker's valve 41 on described time matchmaker's pipe 4,
It further include detection system 5 and control unit (not shown), the detection system 5 is for detecting the refrigerant circulation circuit 1
In refrigerant parameter, described control unit is used to judge the refrigerant circulation circuit according to the testing result of the detection system 5
Whether the coolant quantity in 1 is short of or excessively, when the coolant quantity shortcoming in the refrigerant circulation circuit 1, fills described in control opening
Matchmaker's valve 31, the refrigerant in the refrigerant storage device 2 is filled in the refrigerant circulation circuit 1 by the matchmaker's pipe 3 that fills, when described
When refrigerant excess in refrigerant circulation circuit 1, control, which is opened, described returns matchmaker's valve 41, the refrigerant in the refrigerant circulation circuit 1
It is recycled in the refrigerant storage device 2 by described time matchmaker's pipe 4.
A kind of coolant circulating system provided by the invention, detection system 5 detect the refrigerant ginseng obtained in refrigerant circulation circuit 1
After amount, control unit according to the refrigerant parameter that detection system 5 detects judge the refrigerant in coolant circulating system whether be short of or
Excessive, when the refrigerant shortcoming in refrigerant circulation circuit 1, control unit, which then controls, fills matchmaker's valve 31 described in opening, so that refrigerant stores up
Refrigerant in cryopreservation device 2 is filled in refrigerant circulation circuit 1 by filling matchmaker's pipe 3, when the refrigerant excess in refrigerant circulation circuit 1, control
Unit processed, which then controls, opens back matchmaker's valve 41, so that the refrigerant in refrigerant circulation circuit 1 is recycled to refrigerant storage dress by returning matchmaker's pipe 4
Set in 2, it is thus achieved that in refrigerant circulation circuit 1 coolant quantity automatic adjustment.Compared with prior art, the embodiment of the present invention
Refrigerant adjustable range is unrestricted, therefore can guarantee that the refrigeration of coolant circulating system or heating operations are in best shape always
State.
In the above-described embodiments, coolant circulating system can be applied to refrigerator, also can be applied to air-conditioning, can also apply
In the refrigeration such as refrigerator and/or heating equipment, it is not specifically limited herein.But since air conditioner is that common cooling and warming is set
Standby, when freezing and heating, used coolant quantity differs greatly, therefore is only applied to air conditioner with coolant circulating system below
Example is illustrated.
Wherein, refrigerant storage device 2 can be liquid storage container, and the material of liquid storage container can be with stainless steel or copper etc., herein
It is not specifically limited, as long as being able to bear certain pressure and to refrigerant and machine oil be corrosion-free or effect of dissolving each other.
In addition, filling matchmaker's valve 31 and returning matchmaker's valve 41 is closed type valve, and filling matchmaker's valve 31 and time matchmaker's valve 41 can
Think gate valve, shut-off valve, plug valve, ball valve, butterfly valve, needle valve, diaphragm valve etc., is not specifically limited herein.But due to cutting
Only frictional force is small between sealing surface during opening and closing for valve, and good compared with patience, Lift is smaller, and manufacture is easy and easy to maintenance,
It is applicable to mesolow and high pressure scene, it is therefore preferable that filling matchmaker's valve 31 and returning matchmaker's valve 41 is shut-off valve.
It in order to avoid refrigerant storage device 2, fills matchmaker's pipe 3 and returns the limited interior space of 4 occupied space of matchmaker's pipe, preferably
, refrigerant storage device 2, fill matchmaker's pipe 3 and return matchmaker's pipe 4 be set in air-conditioner outdoor unit, to avoid refrigerant storage device 2, fill
Matchmaker's pipe 3 and time limited interior space of 4 occupied space of matchmaker's pipe.Wherein, refrigerant storage device 2 can be set outside air conditioner chamber
On middle partition, pedestal or side plate in machine, it is not specifically limited herein.
Specifically, detection system 5 may include following three kinds of specific embodiments:
Embodiment one: detection system 5 includes the first temperature detecting unit (not shown), second temperature detection unit
(not shown) and third temperature detecting unit 51, the first temperature detecting unit is for detecting 14 inlet refrigerant of evaporator
Temperature T1, second temperature detection unit are used to detect the temperature T2 of refrigerant in the middle part of 14 pipeline of evaporator, third temperature detecting unit
51 for detecting the temperature T3 of refrigerant in compressor return air pipe 16, and the first temperature detecting unit, second temperature detection unit with
And third temperature detecting unit 51 is connect with control unit.If thus T2-T1 > 0, that is to say cold in the middle part of 14 pipeline of evaporator
The temperature of matchmaker be greater than 14 inlet refrigerant of evaporator temperature, then it represents that refrigerant before flowing in the middle part of 14 pipeline of evaporator
Evaporate, control unit is the refrigerant shortcoming that can determine in refrigerant circulation circuit 1, and control opening and fill matchmaker's valve 31, with to
It is filled with refrigerant in refrigerant circulation circuit 1, after matchmaker's valve 31 is filled in unlatching, if T2-T1≤0, matchmaker's valve is filled in control unit closing
Door 31 is to complete to fill matchmaker's process；If T3-T2 < preset value that is to say that the temperature of refrigerant in compressor return air pipe 16 is higher by evaporator
The value of refrigerant temperature is less than preset value in the middle part of 14 pipelines, then it represents that refrigerant non-evaporating completely, control unit in evaporator 14 are
It can determine that the refrigerant in refrigerant circulation circuit 1 is excessive, and control and open back matchmaker's valve 41, it will be cold in refrigerant circulation circuit 1
Matchmaker is recycled in refrigerant storage device 2, after opening back matchmaker's valve 41, if T3-T2 >=preset value, control unit are closed back
Matchmaker's valve 41 is to complete back matchmaker's process.
It should be noted that refrigerant becomes the phase transformation of gas phase after being to be absorbed heat from liquid phase in the evaporation process in evaporator 14
Journey, during refrigerant flows in evaporator 14, before not generating phase transformation completely, temperature will not generate variation,
After generating phase transformation completely, the heat in external environment can be conducted by heat transfer into refrigerant, and refrigerant temperature is increased.
Wherein, preset value is set in advance, the setting of preset value, is to carry out mass data acquisition for same type
Under the premise of, it is obtained according to certain algorithm and in conjunction with experience.And it is directed to different type of machines, the preset value obtained is different.
It should be noted that the evaporator 14 of the present embodiment arrangement the first temperature detecting unit and second temperature detection unit
The evaporator being not necessarily referring in process of refrigerastion, and refer to the heat exchanger that evaporation is absorbed heat and generated for refrigerant.For example, air conditioner packet
Two kinds of processes of refrigeration and heating are included, and are switched over by four-way valve 8, wherein when four-way valve 8 is switched to process of refrigerastion, ginseng
See Fig. 2 (a), the cyclic process of refrigerant are as follows: 14 → fluid reservoir of compressor 11 → condenser, 12 → throttle valve, 13 → evaporator 15 →
Compressor 11, refrigerant are evaporated in evaporator 14, then the first temperature detecting unit and second temperature detection unit are arranged
In in evaporator 14；When four-way valve 8 is switched to heating operations, referring to fig. 2 (b), the cyclic process of refrigerant are as follows: compressor 11 →
15 → compressor of evaporator 14 → throttle valve, 13 → condenser, 12 → fluid reservoir 11, refrigerant is evaporated in condenser 12, then
First temperature detecting unit and second temperature detection unit are set in condenser 12.
Wherein, the present embodiment can be adjusted the coolant quantity in air conditioner process of refrigerastion, can also be to air conditioner system
Coolant quantity in thermal process is adjusted, and can also be adjusted to the coolant quantity in refrigeration and heating operations, not do herein
It is specific to limit.When the coolant quantity in air conditioner process of refrigerastion is adjusted, the first temperature detecting unit of Ying Jiang is arranged in steaming
The one end (entrance that is to say evaporator 14) for sending out 14 piping connection throttle valve 13 of device, is arranged in steaming for second temperature detection unit
It sends out in the middle part of 14 pipeline of device.When the coolant quantity during air conditioner heat-production is adjusted, Ying Jiang the first temperature detecting unit cloth
It is placed in one end (entrance that is to say condenser 12) of 12 piping connection throttle valve 13 of condenser, by second temperature detection unit cloth
It is placed in the middle part of 12 pipeline of condenser.When the coolant quantity in air conditioner refrigeration and heating operations is adjusted, should condense
Device 12 connects one end of throttle valve 13, the first temperature detecting unit is arranged in one end of the connection throttle valve 13 of evaporator 14, is condensing
In the middle part of the pipeline of device 12, second temperature detection unit is arranged in the middle part of the pipeline of evaporator 14.
It should be noted that the muffler 16 of compressor is to lead back the gaseous coolant that evaporator 14 is discharged to compressor 11
Pipeline section, including the first pipeline section and the second pipeline section, wherein the first pipeline section is connected between evaporator 14 and fluid reservoir 15, second
Pipeline section is connected between fluid reservoir 15 and compressor 11.Third temperature detecting unit 51 can be set in the first pipeline section as a result,
Also it can be set in the second pipeline section, be not specifically limited herein.
Embodiment two: detection system 5 includes pressure sensing cell 52, and pressure sensing cell 52 is used to detect returning for compressor
Refrigerant pressure in tracheae 16, and pressure sensing cell 52 is connect with control unit.Thus when if P is less than in preset threshold range
Minimum value, then it represents that the cold medium shortage in refrigerant circulation circuit 1, control unit determine the refrigerant in refrigerant circulation circuit 1 owe
It lacks, and controls opening and fill matchmaker's valve 31, to be filled with refrigerant into refrigerant circulation circuit 1, after matchmaker's valve 31 is filled in unlatching, if P
In preset threshold range, control unit, which is then closed, fills matchmaker's valve 31 to complete to fill matchmaker's process；If P is greater than preset threshold range
Interior maximum value, then it represents that the refrigerant in refrigerant circulation circuit 1 is excessive, and control unit determines the refrigerant in refrigerant circulation circuit 1
Shortcoming, and control and open back matchmaker's valve 41, by the refrigerant recovering in refrigerant circulation circuit 1 into refrigerant storage device 2, opening
After opening back matchmaker's valve 41, if P is located in preset threshold range, control unit closes back matchmaker's valve 41 to complete back matchmaker's mistake
Journey.
Wherein, preset threshold range is according between current environmental temperature and environment temperature and best back pressure range
Corresponding relationship determined by, best back pressure range corresponding to environment temperature, is in the case where being directed to this environment temperature
Same type carry out mass data acquisition under the premise of, obtained according to certain algorithm and in conjunction with experience.And in different rings
Under conditions of the temperature of border, the best back pressure range obtained is different.
It should be noted that due to the refrigeration and heating state difference, stream of the refrigerant in refrigerant circulation circuit 1 of air conditioner
To difference, used coolant quantity is also different under identical environment temperature, therefore the corresponding best back pressure range of environment temperature
Difference, the corresponding relationship between environment temperature and best back pressure is different, therefore in air conditioner refrigeration or heating operations
Coolant quantity be adjusted, and determine preset threshold range when, need first according to current cooling and warming state, determine environment temperature
Corresponding relationship between degree and best back pressure range, then further according to current environmental temperature and identified environment temperature
Corresponding relationship between best back pressure range, determines preset threshold range.
Embodiment three: detection system 5 includes the first temperature detecting unit, second temperature detection unit, third temperature detection
Unit 51 and pressure sensing cell 52, the first temperature detecting unit are used to detect the temperature T1 of 14 inlet refrigerant of evaporator, the
Two temperature detecting units are used to detect the temperature T2 of refrigerant in the middle part of 14 pipeline of evaporator, and third temperature detecting unit 51 is for detecting
The temperature T3 of refrigerant in compressor return air pipe 16, pressure sensing cell 52 are used to detect the refrigerant pressure in the muffler 16 of compressor
Power P, and the first temperature detecting unit, second temperature detection unit, third temperature detecting unit 51 and pressure sensing cell 52
It is connect with control unit.If thus T2-T1 > 0, then it represents that refrigerant has evaporated before flowing in the middle part of 14 pipeline of evaporator
It finishes, control unit is the refrigerant shortcoming that can determine in refrigerant circulation circuit 1, and controls opening and fills matchmaker's valve 31, with to refrigerant
It is filled with refrigerant in circulation loop 1, after matchmaker's valve 31 is filled in unlatching, if T2-T1≤0, and P is located in preset threshold range, control
Unit processed, which is then closed, fills matchmaker's valve 31 to complete to fill matchmaker's process；If T3-T2 < preset value, P is greater than the preset threshold range
Maximum value, then it represents that refrigerant non-evaporating completely in evaporator 14, control unit are the refrigerant that can determine in refrigerant circulation circuit 1
It is excessive, and control and open back matchmaker's valve 41, by the refrigerant recovering in refrigerant circulation circuit 1 into refrigerant storage device 2, opening
After opening back matchmaker's valve 41, if T3-T2 >=preset value, and P is located in preset threshold range, control unit then closes back matchmaker's valve
41 to complete back matchmaker's process.
Above-described embodiment one judges in refrigerant circulation circuit 1 whether refrigerant is short of or excessive by detection temperature difference, on
Embodiment two is stated and judges in refrigerant circulation circuit 1 by detection back pressure refrigerant whether to be short of or excessive, above-described embodiment
Three judge in refrigerant circulation circuit 1 whether refrigerant is short of or excessive by detecting temperature difference and back pressure simultaneously, compared to
The condition of above-described embodiment one and embodiment two, three bases of above-described embodiment is more, and judgement is more accurate, therefore preferred detection system
System 5 uses the scheme of above-described embodiment three.
In order to the refrigerant in refrigerant storage device 2 is introduced into the refrigerant circulation circuit 1, fill matchmaker's pipe 3 may include with
Lower two kinds of concrete implementation modes:
The first implementation: filling matchmaker's pipe 3 includes filling matchmaker's tube body and being serially connected with the kinetic pump filled on matchmaker's tube body (to scheme
In be not shown), when fill matchmaker's valve 31 open when, the liquid sucting port of kinetic pump is connected to refrigerant storage device 2, leakage fluid dram with it is described cold
Matchmaker's circulation loop 1 is connected to, and thus the refrigerant in refrigerant storage device 2 can be filled with refrigerant circulation circuit under the action of kinetic pump
In 1.
Wherein, kinetic pump can be set in the side filled matchmaker's valve 31 and be connected to refrigerant storage device 2, also can be set in filling
Matchmaker's valve 31 is connected to the side of refrigerant circulation circuit 1, is not specifically limited herein.
Second of implementation: referring to Fig. 1, Fig. 2 (a) or Fig. 2 (b), one end that matchmaker's pipe 3 connects refrigerant circulation circuit 1 is filled
It is connected in the muffler 16 of compressor, since the refrigerant air pressure in the muffler 16 of compressor is lower, compared to this low pressure,
Pressure in refrigerant storage device 2 is higher, thus when fill matchmaker's valve 31 open when, refrigerant just by refrigerant storage device 2 automatically into
Enter in refrigerant circulation circuit 1.
Compared to the first above-mentioned implementation, it is dynamic without concatenation that matchmaker's pipe 3 is filled used by above-mentioned second of implementation
Power pump, therefore structure is simple, cost is relatively low, therefore preferably fills matchmaker's pipe 3 using structure shown in above-mentioned second of implementation.
Similarly, may include in order to which matchmaker's pipe 4 in the refrigerant recovering in refrigerant circulation circuit 1 to refrigerant storage device 2, will be returned
Following two concrete implementation mode:
The first concrete implementation mode: it returns matchmaker's pipe 4 and includes back matchmaker's tube body and be serially connected with back dynamic on matchmaker's tube body
Power pumps (not shown), and when returning the opening of matchmaker's valve 41, the liquid sucting port of kinetic pump is connected to the refrigerant circulation circuit 1, row
Liquid mouth is connected to refrigerant storage device 2, thus can be by the refrigerant recovering in refrigerant circulation circuit 1 to cold under the action of kinetic pump
In matchmaker's storage device 2.
Wherein, kinetic pump can be set in the side returned matchmaker's valve 41 and be connected to refrigerant storage device 2, also can be set in filling
Matchmaker's valve 31 is connected to the side of refrigerant circulation circuit 1, is not specifically limited herein.
Second of concrete implementation mode: it referring to Fig. 1, Fig. 2 (a) or Fig. 2 (b), returns matchmaker's pipe 4 and connects refrigerant circulation circuit 1
One end be connected in the pipeline between condenser 12 and throttle valve 13, due in the pipeline between condenser 12 and throttle valve 13
Refrigerant pressure it is higher, compared to this elevated pressures, the pressure in refrigerant storage device 2 is lower, thus when return matchmaker's valve 41 beat
When opening, refrigerant is just by refrigerant circulation circuit 1 automatically into refrigerant storage device 2.
Matchmaker's pipe is returned compared to the first above-mentioned concrete implementation mode, used by above-mentioned second of concrete implementation mode
4 without concatenating kinetic pump, therefore structure is simple, and cost is relatively low, therefore preferably returns matchmaker's pipe 4 and use above-mentioned second of specific implementation side
Structure shown in formula.
The refrigerant edge in refrigerant circulation circuit 1 is filled matchmaker's pipe 3 and is back in refrigerant storage device 2 in order to prevent, it is preferred that such as
Fig. 1, Fig. 2 (a) or Fig. 2 (b) are shown, fill on matchmaker's pipe 3 and are serially connected with the first check valve 6, the first check valve 6 only allows to fill in matchmaker's pipe 3
Refrigerant coolant circulating system is flowed to by refrigerant storage device 2, thus prevent refrigerant in refrigerant circulation circuit 1 along filling matchmaker's pipe
3 are back in refrigerant storage device 2.
Wherein, the first check valve 6 can be set in the side for filling the connection refrigerant storage device 2 of matchmaker's valve 31, can also set
It is placed in and fills the side that matchmaker's valve 31 is connected to refrigerant circulation circuit 1, be not specifically limited herein.
Similarly, the refrigerant in refrigerant storage device 2 is back in refrigerant circulation circuit 1 along matchmaker's pipe 4 is returned in order to prevent, preferably
, shown in (a) as shown in Figure 1, Figure 2 or Fig. 2 (b), returns on matchmaker's pipe 4 and be serially connected with second one-way valve 7, second one-way valve 7 only allows back matchmaker
Refrigerant in pipe 4 flows to refrigerant storage device 2 by coolant circulating system, thus prevents the refrigerant edge in refrigerant storage device 2
Matchmaker's pipe 4 is returned to be back in refrigerant circulation circuit 1.
Wherein, second one-way valve 7 can be set in the side for returning the connection refrigerant storage device 2 of matchmaker's valve 41, can also set
It is placed in go back to the side that matchmaker's valve 41 is connected to refrigerant circulation circuit 1, is not specifically limited herein.
Into coolant circulating system be perfused refrigerant when, can be only perfused into refrigerant circulation circuit 1, can also respectively to
Perfusion in refrigerant circulation circuit 1 and refrigerant storage device 2.When using the first above-mentioned scheme, in refrigerant circulation circuit 1
Coolant quantity be adjusted before, matchmaker's valve 41 need to be opened back, to recycle a certain amount of refrigerant into refrigerant storage device 2, with
Guarantee that the effective progress adjusted, this operating process are complicated.Therefore in order to avoid the above problem, preferably into coolant circulating system
When refrigerant is perfused, refrigerant is perfused into refrigerant circulation circuit 1 and refrigerant storage device 2 respectively, thus avoids following to refrigerant
The matchmaker that returns before coolant quantity in loop back path 1 is adjusted operates, and control process is simple, and can guarantee in coolant circulating system
Refrigerant belong to an optimum state (belonging to optimum state at normal temperature) before no adjusting.Specifically, refrigerant circulation returns
Refrigerant in road 1 can be poured by the note matchmaker mouthful on compressor 11, and in order to inject refrigerant to refrigerant storage device, such as scheme
It 1, further include note matchmaker's pipe 9 shown in Fig. 2 (a) or Fig. 2 (b), note matchmaker's pipe 9 is infused for injecting refrigerant into refrigerant storage device 2
Matchmaker's pipe is equipped with note matchmaker's valve 91, when this note matchmaker's valve 91 is opened, can inject refrigerant into refrigerant storage device 2.
Specifically, the link position of note matchmaker's pipe 9 can be for shown in (a) as shown in Figure 1, Figure 2 or Fig. 2 (b), that is, note matchmaker's pipe 9 goes out
Mouth end is connected to back returning on matchmaker's pipe 4 between matchmaker's valve 41 and refrigerant storage device 2, thus infuses matchmaker's pipe 9 and returns the common shape of matchmaker's pipe 4
At Y-pipe, Y-pipe includes two inflow branches and an outflow branch, and two inflow branches are respectively used to note matchmaker and return
Matchmaker, outflow branch connect with refrigerant storage device, avoid in addition opening up the cold mouth of note on refrigerant storage device 2, and Y-pipe is
For common structure, therefore manufacturing process is simple, and cost of manufacture is lower.
Referring to Fig. 3, the embodiment of the invention also provides a kind of control method of coolant circulating system, which is based on
A kind of coolant circulating system provided in an embodiment of the present invention, comprising the following steps:
Refrigerant parameter in S1, detection system detection refrigerant circulation circuit；
The refrigerant parameter that S2, control unit are detected according to the detection system, judges cold in the refrigerant circulation circuit
Whether matchmaker is short of or excess；
S3, when in the refrigerant circulation circuit refrigerant shortcoming when, control unit control open described in fills matchmaker's valve, work as institute
When stating the refrigerant excess in refrigerant circulation circuit, control unit then controls described time matchmaker's valve of opening.
A kind of control method of coolant circulating system provided in an embodiment of the present invention, detection system detect to obtain refrigerant circulation
After refrigerant parameter in circuit, the refrigerant parameter that control unit is detected according to detection system judges cold in coolant circulating system
Whether matchmaker is short of or excessively, when the refrigerant shortcoming in refrigerant circulation circuit, control unit then controls opening and fills matchmaker's valve, so that cold
Refrigerant in matchmaker's storage device is filled in refrigerant circulation circuit by filling matchmaker's pipe, when the refrigerant excess in refrigerant circulation circuit, control
Unit processed, which then controls, opens back matchmaker's valve, so that the refrigerant in refrigerant circulation circuit is recycled to refrigerant storage device by returning matchmaker's pipe
It is interior, it is thus achieved that in refrigerant circulation circuit coolant quantity automatic adjustment.Compared with prior art, the refrigerant of the embodiment of the present invention
Adjustable range is unrestricted, therefore can guarantee that the refrigeration of coolant circulating system or heating operations are in optimum state always.
In the embodiment shown in fig. 3, detection system includes the first temperature detecting unit, second temperature detection unit and the
Three temperature detecting units, the first temperature detecting unit are used to detect the temperature T1 of evaporator pipeline inlet, second temperature detection
Unit is used to detect the temperature T2 in the middle part of evaporator pipeline, and third temperature detecting unit is for detecting evaporator pipeline exit
Temperature T3, step S2 include:
S21, as T2-T1 > 0, control unit determine the refrigerant in refrigerant circulation circuit be short of；
Correspondingly, after step s 3 further include: as T2-T1≤0, control unit control, which is closed, fills matchmaker's valve；
S22, when T3-T2 < preset value, control unit determine the refrigerant in refrigerant circulation circuit excess；
Correspondingly, after step s 3 further include: when T3-T2 >=preset value, matchmaker's valve is closed back in control unit control.
In the embodiment shown in fig. 3, detection system includes pressure sensing cell, and pressure sensing cell is for detecting compression
Refrigerant pressure P in the muffler of machine, step S2 include:
S21 ', when P be less than preset threshold range minimum value when, control unit determine the refrigerant in refrigerant circulation circuit owe
It lacks；
Correspondingly, after step s 3 further include: when P is located in preset threshold range, control unit control, which is closed, fills
Matchmaker's valve；
S22 ', when P be greater than preset threshold range maximum value when, control unit determines the refrigerant mistake in refrigerant circulation circuit
Amount；
Correspondingly, after step s 3 further include: when P is located in preset threshold range, control unit control is closed back
Matchmaker's valve.
In the embodiment shown in fig. 3, detection system includes the first temperature detecting unit, second temperature detection unit, the
Three temperature detecting units and pressure sensing cell, the first temperature detecting unit are used to detect the temperature of evaporator pipeline inlet
T1, second temperature detection unit are used to detect the temperature T2 in the middle part of evaporator pipeline, and third temperature detecting unit is steamed for detecting
The temperature T3 at device tube outlet is sent out, pressure sensing cell is used to detect the refrigerant pressure P, step S2 in the muffler of compressor
Include:
S21 ", as T2-T1 > 0, control unit determine the refrigerant in refrigerant circulation circuit be short of；
Correspondingly, after step s 3 further include: when T2-T1≤0, and when P is located in preset threshold range, control unit
Control, which is closed, fills matchmaker's valve；
S22 ", when T3-T2 < preset value, and when P is greater than the maximum value of preset threshold range, control unit determines that refrigerant follows
Refrigerant in loop back path is excessive；
Correspondingly, after step s 3 further include: when T3-T2 >=preset value, and when P is located in preset threshold range, control
Unit control processed, which is closed, fills matchmaker's valve.
In the description of this specification, particular features, structures, materials, or characteristics can be real in any one or more
Applying can be combined in any suitable manner in example or example.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of coolant circulating system, including be sequentially connected and constitute the compressor of refrigerant circulation circuit, condenser, throttle valve,
Evaporator and fluid reservoir, which is characterized in that further include refrigerant storage device, the refrigerant storage device and the refrigerant circulation return
Be connected between road fill matchmaker pipe and return matchmaker pipe, it is described fill on matchmaker's pipe to be serially connected with fill matchmaker's valve, be serially connected with back matchmaker on described time matchmaker's pipe
Valve,
It further include detection system and control unit, the detection system is used to detect the refrigerant ginseng in the refrigerant circulation circuit
Amount, described control unit are used for the testing result according to the detection system, judge the coolant quantity in the refrigerant circulation circuit
Whether it is short of or excessive, when the coolant quantity shortcoming in the refrigerant circulation circuit, fills matchmaker's valve described in control opening, it is described cold
Refrigerant in matchmaker's storage device is filled in the refrigerant circulation circuit by the matchmaker's pipe that fills, when cold in the refrigerant circulation circuit
When matchmaker's excess, described time matchmaker's valve is opened in control, and the refrigerant in the refrigerant circulation circuit is recycled to described by described time matchmaker's pipe
In refrigerant storage device；
The detection system includes the first temperature detecting unit, second temperature detection unit and third temperature detecting unit, described
First temperature detecting unit is used to detect the temperature of refrigerant at the evaporator inlet, and the second temperature detection unit is for examining
The temperature of refrigerant in the middle part of the evaporator pipeline is surveyed, the third temperature detecting unit is for detecting in the compressor return air pipe
The temperature of refrigerant or the temperature in the evaporator pipeline exit, and the detection of first temperature detecting unit, second temperature is single
Member and third temperature detecting unit are connect with described control unit；
When the temperature of refrigerant is greater than the temperature of refrigerant at the evaporator inlet in the middle part of the evaporator pipeline, the control is single
Member determines the refrigerant shortcoming in the refrigerant circulation circuit；
Correspondingly, when the temperature of refrigerant is no more than the temperature of refrigerant at the evaporator inlet in the middle part of the evaporator pipeline,
Described control unit control fills matchmaker's valve described in closing；
The difference of the temperature of refrigerant is less than pre- in the middle part of the temperature of refrigerant in the compressor return air pipe and the evaporator pipeline
If when value, described control unit determines the excess of the refrigerant in the refrigerant circulation circuit；
Correspondingly, when the difference of the temperature of refrigerant in the compressor return air pipe and the temperature of evaporator pipeline middle part refrigerant
When not less than preset value, described time matchmaker's valve is closed in described control unit control.
2. coolant circulating system according to claim 1, which is characterized in that the detection system includes pressure detecting list
Member, the pressure sensing cell are used to detect the refrigerant pressure in the muffler of the compressor, and the pressure sensing cell
It is connect with described control unit.
3. coolant circulating system according to claim 1, which is characterized in that the matchmaker's pipe that fills connects the refrigerant circulation time
The one end on road is connected in the muffler of the compressor.
4. coolant circulating system according to claim 1, which is characterized in that described time matchmaker's pipe connects the refrigerant circulation and return
The one end on road is connected in the pipeline between the condenser and the throttle valve.
5. coolant circulating system according to claim 1 or 3, which is characterized in that described fill on matchmaker's pipe is serially connected with the first list
To valve, first check valve only allow described in the refrigerant that fills in matchmaker's pipe the refrigerant circulation is flowed to by the refrigerant storage device
System.
6. coolant circulating system according to claim 1 or 4, which is characterized in that it is single to be serially connected with second on described time matchmaker's pipe
To valve, the second one-way valve only allows the refrigerant returned in matchmaker's pipe to flow to the refrigerant storage by the coolant circulating system
Device.
7. coolant circulating system according to claim 1, which is characterized in that further include note matchmaker's pipe, note matchmaker's pipe is used for
Refrigerant is injected into the refrigerant storage device, and note matchmaker's pipe is equipped with note matchmaker's valve.
8. coolant circulating system according to claim 7, which is characterized in that the outlet end of note matchmaker's pipe is connected to described
Return returning on matchmaker's pipe between matchmaker's valve and the refrigerant storage device.
9. a kind of control method applied to coolant circulating system described in claim 1, which is characterized in that including following step
It is rapid:
Refrigerant parameter in S1, detection system detection refrigerant circulation circuit；
The refrigerant parameter that S2, control unit are detected according to the detection system judges that the refrigerant in the refrigerant circulation circuit is
No shortcoming or excess；
S3, when in the refrigerant circulation circuit refrigerant shortcoming when, control unit control open described in fills matchmaker's valve, when described cold
When refrigerant excess in matchmaker's circulation loop, control unit then controls that opening is described to return matchmaker's valve；
The detection system includes the first temperature detecting unit, second temperature detection unit and third temperature detecting unit, described
First temperature detecting unit is used to detect the temperature T1 of the evaporator pipeline inlet, and the second temperature detection unit is used for
The temperature T2 in the middle part of the evaporator pipeline is detected, the third temperature detecting unit is for detecting in the compressor return air pipe
The temperature T3, the step S2 in the temperature of refrigerant or the evaporator pipeline exit include:
S21, as T2-T1 > 0, described control unit determine the refrigerant in the refrigerant circulation circuit be short of；
Correspondingly, after the step S3 further include: as T2-T1≤0, fill matchmaker's valve described in described control unit control closing
Door；
S22, when T3-T2 < preset value, described control unit determine the refrigerant in the refrigerant circulation circuit excess；
Correspondingly, after the step S3 further include: when T3-T2 >=preset value, described control unit control is closed
Described time matchmaker's valve.
10. control method according to claim 9, which is characterized in that the detection system includes pressure sensing cell, institute
The refrigerant pressure P in muffler of the pressure sensing cell for detecting the compressor is stated, step S2 includes:
S21 ', when P be less than preset threshold range minimum value when, described control unit determines cold in the refrigerant circulation circuit
Matchmaker's shortcoming；
Correspondingly, after the step S3 further include: when P is located in the preset threshold range, described control unit control
System fills matchmaker's valve described in closing；
S22 ', when P be greater than the preset threshold range maximum value when, described control unit determines in the refrigerant circulation circuit
Refrigerant it is excessive；
Correspondingly, after the step S3 further include: when P is located in the preset threshold range, described control unit control
System closes described time matchmaker's valve.
11. control method according to claim 9, which is characterized in that the detection system includes the first temperature detection list
Member, second temperature detection unit, third temperature detecting unit and pressure sensing cell, first temperature detecting unit is for examining
The temperature T1 of the evaporator pipeline inlet is surveyed, the second temperature detection unit is for detecting in the middle part of the evaporator pipeline
Temperature T2, the third temperature detecting unit is used to detect the temperature T3 in the evaporator pipeline exit, the pressure inspection
The refrigerant pressure P in muffler of the unit for detecting the compressor is surveyed, step S2 includes:
S21 ", as T2-T1 > 0, described control unit determine the refrigerant in the refrigerant circulation circuit be short of；
Correspondingly, after the step S3 further include: when T2-T1≤0, and when P is located in preset threshold range, the control
Unit control fills matchmaker's valve described in closing；
S22 ", when T3-T2 < preset value, and when P is greater than the maximum value of the preset threshold range, described control unit determines institute
The refrigerant stated in refrigerant circulation circuit is excessive；
Correspondingly, after the step S3 further include: when T3-T2 >=preset value, and P is located in the preset threshold range
When, described control unit, which controls, fills matchmaker's valve described in closing.
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| CN107796148A (en) * | 2017-10-20 | 2018-03-13 | 珠海格力电器股份有限公司 | Coolant circulating system and its control method |
| CN108332462A (en) * | 2018-03-29 | 2018-07-27 | 广东纽恩泰新能源科技发展有限公司 | A kind of refrigerant self-balancing device for storing liquid |
| CN110529966A (en) * | 2019-09-09 | 2019-12-03 | 宁波奥克斯电气股份有限公司 | A kind of change coolant quantity air-conditioning system and its control method |
| CN110762647A (en) * | 2019-10-16 | 2020-02-07 | 珠海格力电器股份有限公司 | Central air-conditioning system and control method thereof |
| CN111156746A (en) * | 2020-01-07 | 2020-05-15 | 青岛海尔电冰箱有限公司 | Refrigeration system, control method, refrigerator and storage medium |
| JP7185154B2 (en) * | 2021-04-30 | 2022-12-07 | ダイキン工業株式会社 | Refrigeration cycle system and refrigerant recovery device |
| CN113531964A (en) * | 2021-07-06 | 2021-10-22 | 青岛海尔空调器有限总公司 | Refrigerant recovery system and recovery method thereof |
| CN114370689B (en) * | 2022-01-27 | 2023-06-02 | 宁波奥克斯电气股份有限公司 | Refrigerant charge amount determination method, control method, air conditioner, and storage medium |
| CN114659233A (en) * | 2022-03-28 | 2022-06-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method for air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156012A (en) * | 1990-12-17 | 1992-10-20 | Sanden Corporation | Refrigerant charge detection system for an air conditioning system |
| CN101749825A (en) * | 2008-12-04 | 2010-06-23 | 珠海格力电器股份有限公司 | Refrigerant super-addition control method for composite air conditioner |
| CN202885371U (en) * | 2012-09-24 | 2013-04-17 | 宁波奥克斯空调有限公司 | Refrigerant circulation system of heat pump air conditioner |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Method and device and system for detecting air conditioner coolants |
| CN104534752A (en) * | 2015-01-26 | 2015-04-22 | 珠海格力电器股份有限公司 | Refrigerant filling system and method and air-conditioning machine set |
| CN206019096U (en) * | 2016-08-30 | 2017-03-15 | 海信科龙电器股份有限公司 | A kind of coolant circulating system |
-
2016
- 2016-08-30 CN CN201610765266.4A patent/CN106196778B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156012A (en) * | 1990-12-17 | 1992-10-20 | Sanden Corporation | Refrigerant charge detection system for an air conditioning system |
| CN101749825A (en) * | 2008-12-04 | 2010-06-23 | 珠海格力电器股份有限公司 | Refrigerant super-addition control method for composite air conditioner |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Method and device and system for detecting air conditioner coolants |
| CN202885371U (en) * | 2012-09-24 | 2013-04-17 | 宁波奥克斯空调有限公司 | Refrigerant circulation system of heat pump air conditioner |
| CN104534752A (en) * | 2015-01-26 | 2015-04-22 | 珠海格力电器股份有限公司 | Refrigerant filling system and method and air-conditioning machine set |
| CN206019096U (en) * | 2016-08-30 | 2017-03-15 | 海信科龙电器股份有限公司 | A kind of coolant circulating system |
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Address after: 528303 No. 8, Rong Gang Road, Ronggui street, Shunde District, Foshan, Guangdong. Co-patentee after: Hisense (Guangdong) Air Conditioner Co., Ltd. Patentee after: Haixin Home Appliances Group Co., Ltd. Address before: 528303 No. 8, Rong Gang Road, Ronggui street, Shunde District, Foshan, Guangdong. Co-patentee before: Hisense (Guangdong) Air Conditioner Co., Ltd. Patentee before: Hisense Kelon Electrical Holdings Co., Ltd. |