CN107449191A - Air-conditioning system and its heat-production control method, device and machinable medium - Google Patents
Air-conditioning system and its heat-production control method, device and machinable medium Download PDFInfo
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- CN107449191A CN107449191A CN201710595194.8A CN201710595194A CN107449191A CN 107449191 A CN107449191 A CN 107449191A CN 201710595194 A CN201710595194 A CN 201710595194A CN 107449191 A CN107449191 A CN 107449191A
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- degree
- superheat
- pressure
- refrigerant
- gas
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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
- 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
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B2700/2113—Temperatures of a suction accumulator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning system and its heat-production control method, device and machinable medium, methods described includes：Data acquisition step (S0)：Obtain the first degree of superheat DSH1 and pressure at expulsion P1 of refrigerant in the blast pipe of compressor, the second degree of superheat SSH2 of refrigerant and the 3rd degree of superheat ACSH3 of the refrigerant in air inlet pipe in the blast pipe of gas-liquid separator；Gas-liquid separator discharge opeing step (S1)：When pressure at expulsion P1 is in the range of the first permission pressure at expulsion and the first degree of superheat DSH1 is in the first degree of superheat preset range, and when the second degree of superheat SSH2 is less than the lower threshold value of the 3rd degree of superheat preset range less than the lower threshold value of the second degree of superheat preset range and the 3rd degree of superheat ACSH3, the refriger-ant section in the blast pipe of compressor is branched in the air inlet pipe of gas-liquid separator.The liquid refrigerant that the above method can make to lodge in gas-liquid separator bottom is discharged in time, improves the heating capacity of air-conditioning system at low temperature.
Description
Technical field
The present invention relates to the heating control technology field of air-conditioning system, is controlled more particularly to a kind of air-conditioning system and its heating
Method, apparatus processed and machinable medium.
Background technology
When air-conditioning system operates in heating mode, the refrigerant in outdoor unit heat exchanger needs to absorb the heat in external environment
Amount, realizes conversion of the liquid to gaseous state superheat state.But under the external environment compared with low temperature, due to the system in outdoor unit heat exchanger
Cryogen and the extraneous temperature difference are smaller, and heat exchange efficiency reduces, make to be back to refrigerant in gas-liquid separator the degree of superheat and mass dryness fraction compared with
Small, the refrigerant flow for participating in Air Conditioning Cycle reduces, and causes the heating capacity of air-conditioning system to decline.
Therefore, it is necessary to be optimized to the heating method of air-conditioning system, pass through what is accumulated in timely drainage gas-liquid separator
Liquid refrigerant, increase participate in the refrigerant flow of Air Conditioning Cycle, and lifting air-conditioning system is compared with the heating under low temperature environment
Ability.
The content of the invention
For the drawbacks described above or deficiency of prior art, the invention provides a kind of heat-production control method of air-conditioning system,
The liquid refrigerant accumulated in gas-liquid separator can be discharged in time, lifting air-conditioning system is compared with the heating under low temperature environment
Energy.
To achieve the above object, the invention provides a kind of heat-production control method of air-conditioning system, methods described to include：
Data acquisition step：Under the heating mode of air-conditioning system, of the refrigerant in the blast pipe of compressor is obtained
One degree of superheat DSH1 and pressure at expulsion P1, gas-liquid separator blast pipe in the second degree of superheat SSH2 of refrigerant and described
3rd degree of superheat ACSH3 of the refrigerant in the air inlet pipe of gas-liquid separator；
Gas-liquid separator discharge opeing step：When the pressure at expulsion P1 first allow pressure at expulsion in the range of and described first
Degree of superheat DSH1 is in the first degree of superheat preset range, and second degree of superheat SSH2 is less than the second degree of superheat preset range
Lower threshold value and the 3rd degree of superheat ACSH3 be less than the 3rd degree of superheat preset range lower threshold value when, by the compressor
Blast pipe in refriger-ant section branch in the air inlet pipe of the gas-liquid separator to promote the gas-liquid separator discharge opeing.
Further, the gas-liquid separator discharge opeing step also includes：
After refriger-ant section in the blast pipe of the compressor to be branched to the air inlet pipe of the gas-liquid separator, work as institute
Stating pressure at expulsion P1 allows the upper threshold value of pressure at expulsion scope, or first degree of superheat DSH1 more than described first more than described
The upper threshold value of first degree of superheat preset range, or second degree of superheat SSH2 are more than the upper of second degree of superheat preset range
Threshold value, or the 3rd degree of superheat ACSH3 be more than the 3rd degree of superheat preset range upper threshold value when, stop the compression
Refrigerant in the blast pipe of machine is branched in the air inlet pipe of the gas-liquid separator.
Preferably, described first allows pressure at expulsion scope to be 2.2Mpa~2.6Mpa, and first degree of superheat presets model
25 DEG C~35 DEG C are enclosed, second degree of superheat preset range is 3 DEG C~5 DEG C, and the 3rd degree of superheat preset range is 4 DEG C~5
℃。
Specifically, methods described also includes：
Compressor blowdown step：Air-conditioning system is in a heating mode in normal course of operation, when the pressure at expulsion P1 is big
In second allow pressure at expulsion scope upper threshold value when, by the refriger-ant section pressure release in the blast pipe of the compressor to described
In the air inlet pipe of gas-liquid separator.
Further, the compressor blowdown step also includes：
After in the air inlet pipe of the refriger-ant section pressure release in the blast pipe of the compressor to the gas-liquid separator, when
When the pressure at expulsion P1 is less than the lower threshold value that second allows pressure at expulsion scope, stop in the blast pipe of the compressor
In refrigerant pressure release to the air inlet pipe of the gas-liquid separator.
Preferably, described second allows pressure at expulsion scope to be 3.3Mpa~3.6Mpa.
Correspondingly, present invention also offers a kind of heating control device of air-conditioning system, described device to include first pressure
Sensor, the first temperature sensor, second pressure sensor, second temperature sensor, the 3rd pressure sensor, the 3rd temperature pass
Refrigerant is connected between the air inlet pipe of sensor and controller, the blast pipe of the compressor and the gas-liquid separator to backflow
Pipeline, the refrigerant backflow and are provided with electromagnetic switch valve in pipeline, wherein：
The first pressure sensor, the pressure at expulsion of the refrigerant in blast pipe for gathering the compressor；
First temperature sensor, the refrigerant temperature in blast pipe for gathering the compressor；
The second pressure sensor, the exhaust pressure of the refrigerant in blast pipe for gathering the gas-liquid separator
Power；
The second temperature sensor, the refrigerant temperature in blast pipe for gathering the gas-liquid separator；
3rd pressure sensor, the air inlet pressure of the refrigerant in air inlet pipe for gathering the gas-liquid separator
Power；
The three-temperature sensor, the refrigerant temperature in air inlet pipe for gathering the gas-liquid separator；
The controller, is configured to：
Under the heating mode of air-conditioning system, the first pressure sensor, the first temperature sensor, second pressure are received
Sensor, second temperature sensor, the 3rd pressure sensor, the collection signal of three-temperature sensor are to obtain the compressor
Blast pipe in the first degree of superheat DSH1 and pressure at expulsion P1 of refrigerant, the refrigeration in the blast pipe of the gas-liquid separator
Second degree of superheat SSH2 of agent and the refrigerant in the air inlet pipe of the gas-liquid separator the 3rd degree of superheat ACSH3；And
When the pressure at expulsion P1 is in the range of the described first permission pressure at expulsion and first degree of superheat DSH1 is in institute
State in the first degree of superheat preset range, and second degree of superheat SSH2 is less than the lower threshold of second degree of superheat preset range
When value and the 3rd degree of superheat ACSH3 are less than the lower threshold value of the 3rd degree of superheat preset range, the electromagnetism is controlled to open
Close the valve conducting refrigerant and backflow pipeline to promote the gas-liquid separator discharge opeing.
Specifically, the controller is further configured to：
When the control conducting refrigerant backflows pipeline with discharge opeing, allow to arrange when the pressure at expulsion P1 is more than described first
The upper threshold value of atmospheric pressure scope, or first degree of superheat DSH1 are more than the upper threshold value of first degree of superheat preset range, or
Second degree of superheat SSH2 is more than the upper threshold value of second degree of superheat preset range, or the 3rd degree of superheat ACSH3 is big
When the upper threshold value of the 3rd degree of superheat preset range, refrigerant described in the electromagnetic switch valve breakdown is controlled to backflow pipeline.
Preferably, described first allows pressure at expulsion scope to be 2.2Mpa~2.6Mpa, and first degree of superheat presets model
Enclose for 25 DEG C~35 DEG C, second degree of superheat preset range be 3 DEG C~5 DEG C, the 3rd degree of superheat preset range be 4 DEG C~
5℃。
Further, the controller is further configured to：
Air-conditioning system in normal course of operation, allows to arrange when the pressure at expulsion P1 is more than described second in a heating mode
During the upper threshold value of atmospheric pressure scope, control the electromagnetic switch valve to turn on the refrigerant and backflow pipeline with pressure release.
Further, when the control conducting refrigerant backflows pipeline with pressure release, when the pressure at expulsion P1 is less than described
Second when allowing the lower threshold value of pressure at expulsion scope, controls refrigerant described in the electromagnetic switch valve breakdown to backflow pipeline.
Preferably, described second allows pressure at expulsion scope to be 3.3Mpa~3.6Mpa.
In addition, present invention also offers a kind of machinable medium, it is stored with the machinable medium
Instruction, it is described to instruct for causing machine to perform the above method.
Present invention also offers a kind of air-conditioning system, the air-conditioning system includes the above-mentioned heating control device of the present invention.
According to above-mentioned technical proposal, by the heat-production control method of the air-conditioning system in the present invention, compressor can ensured
In the case of normal operation, the high-temperature high-pressure refrigerant part in compressor exhaust pipe is branched to the air inlet pipe of gas-liquid separator
Interior progress degree of superheat supplement, the liquid refrigerant for enabling to lodge in gas-liquid separator bottom are discharged in time, add participation air-conditioning
The refrigerant amount of system circulation, effectively improve the heating capacity of air-conditioning system at low temperatures.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Fig. 1 is the flow chart according to the heat-production control method of the air-conditioning system of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the heating control device of the air-conditioning system of method according to Fig. 1.
Description of reference numerals
100：Air-conditioning system；
11：Compressor；12：Interior machine condenser；13：Choke valve；14：Outer machine evaporator；15：Gas-liquid separator；
21：First pressure sensor；22：First temperature sensor；
31：Second pressure sensor；32：Second temperature sensor；
41：3rd pressure sensor；42：Three-temperature sensor；
5：Electromagnetic switch valve.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, the invention provides a kind of heat-production control method of air-conditioning system, including：
Data acquisition step S0：Under the heating mode of air-conditioning system, refrigerant in the blast pipe of compressor is obtained
First degree of superheat DSH1 and pressure at expulsion P1, gas-liquid separator blast pipe in refrigerant the second degree of superheat SSH2 and gas
3rd degree of superheat ACSH3 of the refrigerant in the air inlet pipe of liquid/gas separator；
Gas-liquid separator discharge opeing step S1：When pressure at expulsion P1 first allow pressure at expulsion in the range of and first degree of superheat
DSH1 in the first degree of superheat preset range, and the second degree of superheat SSH2 be less than the second degree of superheat preset range lower threshold value with
And the 3rd degree of superheat ACSH3 be less than the 3rd degree of superheat preset range lower threshold value when, by the refrigerant in the blast pipe of compressor
Part is branched in the air inlet pipe of gas-liquid separator to promote gas-liquid separator discharge opeing.
It can be seen that above-mentioned heat-production control method is in the case where ensuring compressor normal operation, by setting the above-mentioned degree of superheat
, intelligently will pressure when the degree of superheat for judging the entrance point of gas-liquid separator and the port of export is too low with pressure at expulsion analysis method
High-temperature high-pressure refrigerant part in contracting machine blast pipe, which branches to, carries out degree of superheat supplement in the air inlet pipe of gas-liquid separator, make gas
The device chamber temperature rise of liquid/gas separator, in time discharge lodge in the liquid refrigerant of gas-liquid separator bottom, it is empty to add participation
The refrigerant amount of adjusting system circulation, effectively improves the heating capacity of air-conditioning system at low temperatures.
, only need to be in compressor and gas-liquid and the above method need not do the improvement in structure to the body of gas-liquid separator
Between separator increase a bypass of backflowing, with present in prior art by the HTHP communicating exhaust gas of compressor extremely
The fluid-discharge method that gas-liquid separator bottom directly supplements the degree of superheat is compared, and the technology difficulty that the above method is implemented is smaller, is saved
Manufacturing cost.
Further, gas-liquid separator discharge opeing step S1 also includes：
After refriger-ant section in the blast pipe of compressor to be branched to the air inlet pipe of gas-liquid separator, as pressure at expulsion P1
The upper threshold value of pressure at expulsion scope, or the first degree of superheat DSH1 is allowed to be more than the upper-level threshold of the first degree of superheat preset range more than first
Value, or the second degree of superheat SSH2 are more than the upper threshold value of the second degree of superheat preset range, or the 3rd degree of superheat ACSH3 is more than the 3rd mistake
During the upper threshold value of temperature preset range, stop the air inlet pipe that the refrigerant in the blast pipe by compressor branches to gas-liquid separator
It is interior.
It can be seen that discharge opeing of the above method except gas-liquid separator can be realized, moreover it is possible to by above-mentioned analysis method, judge discharge opeing
During the degree of superheat that occurs and the excessive situation of pressure at expulsion, now system can intelligently turn off the blast pipe and gas of compressor
The conducting of the air inlet pipe of liquid/gas separator, gas-liquid separator is avoided to influence the stability of air-conditioning system operation because of excessive discharge opeing.
Preferably, the first permission pressure at expulsion scope is 2.2Mpa~2.6Mpa, the first 25 DEG C of degree of superheat preset range~
35 DEG C, the second degree of superheat preset range is 3 DEG C~5 DEG C, and the 3rd degree of superheat preset range is 4 DEG C~5 DEG C.
In addition, above-mentioned heat-production control method also includes：
Compressor blowdown step S2：Air-conditioning system is in a heating mode in normal course of operation, when pressure at expulsion P1 is more than
During the upper threshold value of the second permission pressure at expulsion scope, by the refriger-ant section pressure release in the blast pipe of compressor to gas-liquid separator
Air inlet pipe in；And then, when pressure at expulsion P1 is less than the lower threshold value that second allows pressure at expulsion scope, stop compressor
Blast pipe in refrigerant pressure release to the air inlet pipe of gas-liquid separator in.
Preferably, second allows pressure at expulsion scope to be 3.3Mpa~3.6Mpa.
That is, in air-conditioning system normal heating process, when the pressure at expulsion P1 of compressor numerical value is more than second
When allowing the upper threshold value of pressure at expulsion scope, compressor is in High Abnormal Pressure state, passes through above-mentioned compressor blowdown step S2
The method that refriger-ant section in the middle blast pipe by compressor is branched in the air inlet pipe of gas-liquid separator, compressor can be realized
Pressure release so as to reduce pressure at expulsion P1, the security of enhancing air-conditioning system operation.
In pressure leak process, when pressure at expulsion P1 deteriorates to less than the lower threshold value of the second permission pressure at expulsion scope, compression
It can stop turning between the blast pipe of machine and the air inlet pipe of gas-liquid separator, so as to avoid causing compressor because pressure release is excessive
Capacity is too low, ensure that the heating stability of air-conditioning system.
Present invention also offers a kind of heating control device of air-conditioning system, reference picture 2, the device passes including first pressure
Sensor 21, the first temperature sensor 22, second pressure sensor 31, second temperature sensor 32, the 3rd pressure sensor 41,
Three-temperature sensor 42 and controller, refrigeration is connected between the blast pipe of compressor 11 and the air inlet pipe of gas-liquid separator 15
Agent is backflowed pipeline, and refrigerant, which backflows, can be provided with electromagnetic switch valve 5 in pipeline, wherein：
The pressure at expulsion for the refrigerant that first pressure sensor 21 is used in the blast pipe of collect and process machine 11；
The refrigerant temperature that first temperature sensor 22 is used in the blast pipe of collect and process machine 11；
Second pressure sensor 31 is used for the pressure at expulsion for gathering the refrigerant in the blast pipe of gas-liquid separator 15；
Second temperature sensor 32 is used to gather the refrigerant temperature in the blast pipe of gas-liquid separator 15；
3rd pressure sensor 41 is used for the admission pressure for gathering the refrigerant in the air inlet pipe of gas-liquid separator 15；
Three-temperature sensor 42 is used to gather the refrigerant temperature in the air inlet pipe of gas-liquid separator 15；
Controller noted above receives first pressure sensor 21, the first TEMP under the heating mode of air-conditioning system 100
Device 22, second pressure sensor 31, second temperature sensor 32, the 3rd pressure sensor 41, three-temperature sensor 42 are adopted
Collect signal to obtain the first degree of superheat DSH1 of the refrigerant in the blast pipe of compressor 11 and pressure at expulsion P1, gas-liquid separator
The 3rd of second degree of superheat SSH2 of the refrigerant in 15 blast pipe and the refrigerant in the air inlet pipe of gas-liquid separator 15
Degree of superheat ACSH3；
When pressure at expulsion P1 is in the range of the first permission pressure at expulsion and the first degree of superheat DSH1 is preset in first degree of superheat
In the range of, and the second degree of superheat SSH2 is small less than the lower threshold value of the second degree of superheat preset range and the 3rd degree of superheat ACSH3
When the lower threshold value of the 3rd degree of superheat preset range, control electromagnetic switch valve 5 turns on refrigerant and backflows pipeline to promote gas-liquid point
From the discharge opeing of device 15.
And then, when electromagnetic switch valve 5 controls conducting refrigerant to backflow pipeline with discharge opeing, when pressure at expulsion P1 is more than the
One allows the upper threshold value of pressure at expulsion scope, or the first degree of superheat DSH1 to be more than the upper threshold value of the first degree of superheat preset range, or
Second degree of superheat SSH2 is more than the upper threshold value of the second degree of superheat preset range, or the 3rd degree of superheat ACSH3 is more than the 3rd degree of superheat
During the upper threshold value of preset range, control electromagnetic switch valve 5 turns off refrigerant and backflowed pipeline.
Preferably, the first permission pressure at expulsion scope is 2.2Mpa~2.6Mpa, and the first degree of superheat preset range is 25 DEG C
~35 DEG C, the second degree of superheat preset range is 3 DEG C~5 DEG C, and the 3rd degree of superheat preset range is 4 DEG C~5 DEG C.
Specifically, first pressure sensor 21, the first temperature sensor 22 of the heating control device of above-mentioned air-conditioning system
It is arranged on the blast pipe of compressor 11；Second pressure sensor 31, second temperature sensor 32 are arranged on gas-liquid separator 15
Blast pipe on；3rd pressure sensor 41, three-temperature sensor 42 are arranged in the air inlet pipe of gas-liquid separator 15.Control
The signal receiving module of device is after the gathered data of above-mentioned each sensor is received, by gathered data and accordingly in computing module
Preset value be compared analysis, exporting the corresponding signal that performs by signal output module controls refrigerant to backflow in pipeline
The on or off of electromagnetic switch valve 5, the function of the discharge opeing of dynamic regulation gas-liquid separator 15 is realized, ensure air-conditioning system 100 low
Efficient stable heating under warm environment.
In addition, air-conditioning system 100 in a heating mode in normal course of operation, allows to arrange when pressure at expulsion P1 is more than second
During the upper threshold value of atmospheric pressure scope, the controller can also be used to control the conducting refrigerant of electromagnetic switch valve 5 to backflow pipeline with pressure release；
And then, when pressure at expulsion P1 is less than the lower threshold value that second allows pressure at expulsion scope, controller can control electromagnetic switch valve 5
Shut-off refrigerant backflows pipeline.
Preferably, second allows pressure at expulsion scope to be 3.3Mpa~3.6Mpa.
That is, in the normal heating process of air-conditioning system 100, when the computing module comparative analysis of controller is to compression
When the pressure at expulsion P1 of machine 11 numerical value is more than the upper threshold value that second allows pressure at expulsion scope, it was demonstrated that compressor 11 is in height
Abnormality is pressed, now controller can control electromagnetic switch valve 5 to open, the blast pipe of compressor 11 and entering for gas-liquid separator 15
Tracheae turns on, and the pressure release of compressor 11 strengthens the security that air-conditioning system 100 is run so as to reduce pressure at expulsion P1.In pressure release
Cheng Zhong, when pressure at expulsion P1 deteriorates to less than the lower threshold value of the second permission pressure at expulsion scope, the blast pipe of compressor 11 with
The air inlet pipe of gas-liquid separator 15 can stop turning on, so as to avoid causing the capacity of compressor 11 too low because pressure release is excessive,
It ensure that the heating stability of air-conditioning system 100.
The present invention also provides a kind of machinable medium, instruction is stored with the machinable medium, this refers to
Make for causing machine to perform the heat-production control method of above-mentioned air-conditioning system.For example, the machinable medium can be write
There are chip or micro computer of the program of the heat-production control method of above-mentioned air-conditioning system etc..
In addition, the present invention also provides a kind of air-conditioning system, reference picture 2, the air-conditioning system 100 includes above-mentioned air-conditioning system
Heat control device.That is, air-conditioning system 100 is except the critical piece with general heating air conditioner system, i.e. compressor
11st, outside interior machine condenser 12, choke valve 13, outer machine evaporator 14 and gas-liquid separator 15, it is additionally provided with the system of above-mentioned air-conditioning system
Heat control device.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (14)
1. a kind of heat-production control method of air-conditioning system, it is characterised in that methods described includes：
Data acquisition step (S0)：Under the heating mode of air-conditioning system, of the refrigerant in the blast pipe of compressor is obtained
One degree of superheat DSH1 and pressure at expulsion P1, gas-liquid separator blast pipe in the second degree of superheat SSH2 of refrigerant and described
3rd degree of superheat ACSH3 of the refrigerant in the air inlet pipe of gas-liquid separator；
Gas-liquid separator discharge opeing step (S1)：When the pressure at expulsion P1 first allow pressure at expulsion in the range of and described first
Degree of superheat DSH1 is in the first degree of superheat preset range, and second degree of superheat SSH2 is less than the second degree of superheat preset range
Lower threshold value and the 3rd degree of superheat ACSH3 be less than the 3rd degree of superheat preset range lower threshold value when, by the compressor
Blast pipe in refriger-ant section branch in the air inlet pipe of the gas-liquid separator to promote the gas-liquid separator discharge opeing.
2. according to the method for claim 1, it is characterised in that the gas-liquid separator discharge opeing step also includes：
After refriger-ant section in the blast pipe of the compressor to be branched to the air inlet pipe of the gas-liquid separator, as the row
Atmospheric pressure P1 is more than the described first upper threshold value for allowing pressure at expulsion scope, or first degree of superheat DSH1 is more than described first
The upper threshold value of degree of superheat preset range, or second degree of superheat SSH2 are more than the upper-level threshold of second degree of superheat preset range
Value, or the 3rd degree of superheat ACSH3 be more than the 3rd degree of superheat preset range upper threshold value when, stop the compressor
Blast pipe in refrigerant branch in the air inlet pipe of the gas-liquid separator.
3. according to the method for claim 1, it is characterised in that described first allow pressure at expulsion scope be 2.2Mpa~
2.6Mpa, 25 DEG C~35 DEG C of first degree of superheat preset range, second degree of superheat preset range is 3 DEG C~5 DEG C, described
3rd degree of superheat preset range is 4 DEG C~5 DEG C.
4. according to the method for claim 1, it is characterised in that methods described also includes：
Compressor blowdown step (S2)：Air-conditioning system is in a heating mode in normal course of operation, when the pressure at expulsion P1 is big
In second allow pressure at expulsion scope upper threshold value when, by the refriger-ant section pressure release in the blast pipe of the compressor to described
In the air inlet pipe of gas-liquid separator.
5. according to the method for claim 4, it is characterised in that the compressor blowdown step also includes：
After in the air inlet pipe of the refriger-ant section pressure release in the blast pipe of the compressor to the gas-liquid separator, when described
When pressure at expulsion P1 is less than the lower threshold value that second allows pressure at expulsion scope, stop the refrigeration in the blast pipe of the compressor
In agent pressure release to the air inlet pipe of the gas-liquid separator.
6. according to the method for claim 4, it is characterised in that described second allow pressure at expulsion scope be 3.3Mpa~
3.6Mpa。
7. the heating control device of a kind of air-conditioning system, it is characterised in that described device includes first pressure sensor (21), the
One temperature sensor (22), second pressure sensor (31), second temperature sensor (32), the 3rd pressure sensor (41),
Three-temperature sensor (42) and controller, the blast pipe of the compressor (11) and the air inlet pipe of the gas-liquid separator (15)
Between be connected with refrigerant and backflow pipeline, the refrigerant backflows and is provided with electromagnetic switch valve (5) in pipeline, wherein：
The first pressure sensor, the pressure at expulsion of the refrigerant in blast pipe for gathering the compressor；
First temperature sensor, the refrigerant temperature in blast pipe for gathering the compressor；
The second pressure sensor, the pressure at expulsion of the refrigerant in blast pipe for gathering the gas-liquid separator；
The second temperature sensor, the refrigerant temperature in blast pipe for gathering the gas-liquid separator；
3rd pressure sensor, the admission pressure of the refrigerant in air inlet pipe for gathering the gas-liquid separator；
The three-temperature sensor, the refrigerant temperature in air inlet pipe for gathering the gas-liquid separator；
The controller, is configured to：
Under the heating mode of air-conditioning system, the first pressure sensor, the first temperature sensor, second pressure sensing are received
Device, second temperature sensor, the 3rd pressure sensor, the collection signal of three-temperature sensor are to obtain the row of the compressor
The first degree of superheat DSH1 and pressure at expulsion P1 of endotracheal refrigerant, refrigerant in the blast pipe of the gas-liquid separator
3rd degree of superheat ACSH3 of the refrigerant in the air inlet pipe of the second degree of superheat SSH2 and the gas-liquid separator；And
When the pressure at expulsion P1 allows in the range of pressure at expulsion and first degree of superheat DSH1 is described the described first
In one degree of superheat preset range, and second degree of superheat SSH2 be less than second degree of superheat preset range lower threshold value with
And the 3rd degree of superheat ACSH3 be less than the 3rd degree of superheat preset range lower threshold value when, control the electromagnetic switch valve
Turn on the refrigerant and backflow pipeline to promote the gas-liquid separator discharge opeing.
8. heating control device according to claim 7, it is characterised in that the controller is further configured to：
When the control conducting refrigerant backflows pipeline with discharge opeing, allow exhaust pressure when the pressure at expulsion P1 is more than described first
The upper threshold value of power scope, or first degree of superheat DSH1 are more than the upper threshold value of first degree of superheat preset range, or described
Second degree of superheat SSH2 is more than the upper threshold value of second degree of superheat preset range, or the 3rd degree of superheat ACSH3 is more than institute
When stating the upper threshold value of the 3rd degree of superheat preset range, refrigerant described in the electromagnetic switch valve breakdown is controlled to backflow pipeline.
9. heating control device according to claim 7, it is characterised in that it is described first permission pressure at expulsion scope be
2.2Mpa~2.6Mpa, first degree of superheat preset range are 25 DEG C~35 DEG C, and second degree of superheat preset range is 3 DEG C
~5 DEG C, the 3rd degree of superheat preset range is 4 DEG C~5 DEG C.
10. heating control device according to claim 7, it is characterised in that the controller is further configured to：
Air-conditioning system in normal course of operation, allows exhaust pressure when the pressure at expulsion P1 is more than described second in a heating mode
During the upper threshold value of power scope, control the electromagnetic switch valve to turn on the refrigerant and backflow pipeline with pressure release.
11. heating control device according to claim 10, it is characterised in that the controller is further configured to：
When the control conducting refrigerant backflows pipeline with pressure release, allow exhaust pressure when the pressure at expulsion P1 is less than described second
During the lower threshold value of power scope, refrigerant described in the electromagnetic switch valve breakdown is controlled to backflow pipeline.
12. heating control device according to claim 10, it is characterised in that it is described second permission pressure at expulsion scope be
3.3Mpa~3.6Mpa.
A kind of 13. machinable medium, it is characterised in that instruction is stored with the machinable medium, it is described
Instruct for causing the method any one of machine perform claim requirement 1~6.
14. a kind of air-conditioning system, it is characterised in that the air-conditioning system includes the dress any one of claim 7~12
Put.
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