CN107144056B - The control method and computer readable storage medium of air conditioner and electric expansion valve - Google Patents
The control method and computer readable storage medium of air conditioner and electric expansion valve Download PDFInfo
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- CN107144056B CN107144056B CN201710342727.1A CN201710342727A CN107144056B CN 107144056 B CN107144056 B CN 107144056B CN 201710342727 A CN201710342727 A CN 201710342727A CN 107144056 B CN107144056 B CN 107144056B
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- expansion valve
- aperture
- electric expansion
- indoor machine
- current indoor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet
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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
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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 control methods of electric expansion valve, the air conditioner electric expansion valve method obtains the aperture section and adjusting direction where the electric expansion valve for currently needing to adjust the following steps are included: when the electric expansion valve of current indoor machine needs to adjust；Determine adjustment amount corresponding with the aperture section；According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.The invention also discloses a kind of air conditioner and computer readable storage mediums.The present invention is different by the adjustment amount of the electric expansion valve in each aperture section, and according to the flow curve of electric expansion valve, sectional-regulated aperture, degree of regulation is high, and comfort is good.
Description
Technical field
The present invention relates to multi-connected machine technology field more particularly to the control methods and computer of air conditioner and electric expansion valve
Readable storage medium storing program for executing.
Background technique
The indoor unit flow of present multi-connected machine, which is adjusted, generally uses electronic expansion valve regulation, by adjusting electric expansion valve
Aperture adjust the flow of refrigerant.In the regulation scheme of present electric expansion valve, the aperture of electric expansion valve adjusted every time
Be it is fixed, do not account for the variation of flow curve, degree of regulation is low, causes comfort poor.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide the control methods of a kind of air conditioner and electric expansion valve and computer-readable
Storage medium, it is intended to which in the regulation scheme for solving present electric expansion valve, the aperture of electric expansion valve adjusted every time is fixed
, the variation of flow curve is not accounted for, degree of regulation is low, causes the technical problem of comfort difference.
To achieve the above object, the present invention provides a kind of control method of electric expansion valve, the control of the electric expansion valve
System the following steps are included:
When the electric expansion valve of current indoor machine needs to adjust, where the electric expansion valve that acquisition currently needs to adjust
Aperture section and adjusting direction；
Determine adjustment amount corresponding with the aperture section；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
Preferably, described acquisition the step of currently needing the adjustment direction of the electric expansion valve adjusted, includes:
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second default temperature
When spending threshold value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to reduce aperture.
Preferably, the method also includes:
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as the first preset temperature threshold in the Δ T2B, reduces preset value as the in the Δ T2B
Two temperature thresholds.
Preferably, the preset value is 0.5 degree to 2.0 degree.
Preferably, the step of determination corresponding with aperture section adjustment amount includes:
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
In addition, to achieve the above object, the present invention also provides a kind of air conditioner, the air conditioner includes: memory, processing
Device and the control program for being stored in the electric expansion valve that can be run on the memory and on the processor, the electronics are swollen
The control program of swollen valve realizes following steps when being executed by the processor:
When the electric expansion valve of current indoor machine needs to adjust, where the electric expansion valve that acquisition currently needs to adjust
Aperture section and adjusting direction；
Determine adjustment amount corresponding with the aperture section；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
Preferably, the processor is also used to execute the control program of the electric expansion valve, to perform the steps of
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second default temperature
When spending threshold value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to reduce aperture.
Preferably, the processor is also used to execute the control program of the electric expansion valve, to perform the steps of
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as the first preset temperature threshold in the Δ T2B, reduces preset value as the in the Δ T2B
Two temperature thresholds.
Preferably, the preset value is 0.5 degree to 2.0 degree.
Preferably, the processor is also used to execute the control program of the electric expansion valve, to perform the steps of
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
In addition, to achieve the above object, it is described computer-readable the present invention also provides a kind of computer readable storage medium
The control program of electric expansion valve is stored on storage medium, it is real when the control program of the electric expansion valve is executed by processor
Now the step of air conditioner room unit control method as described above.
The present invention is different by the adjustment amount of the electric expansion valve in each aperture section, bent according to the flow of electric expansion valve
Line, sectional-regulated aperture, degree of regulation is high, and comfort is good.
Detailed description of the invention
Fig. 1 be the hardware running environment that the embodiment of the present invention is related to terminal apparatus structure schematic diagram；
Fig. 2 is the flow diagram of one embodiment of control method of electric expansion valve of the present invention；
Fig. 3 is the refinement flow diagram of mono- embodiment of step S20 in Fig. 2；
Fig. 4 is the flow diagram that electronic expansion valve regulation direction is obtained in one embodiment of the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: when the electric expansion valve of current indoor machine needs to adjust, obtaining
Aperture section and adjusting direction where the electric expansion valve for currently needing to adjust；Determine tune corresponding with the aperture section
Whole amount；According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
Since in the regulation scheme of present electric expansion valve, the aperture adjusted every time there are electric expansion valve is fixed
, the variation of flow curve is not accounted for, degree of regulation is low, causes the technical problem of comfort difference.
The present invention provides a solution, and the adjustment amount by the electric expansion valve in each aperture section is different, according to
The flow curve of electric expansion valve, sectional-regulated aperture, degree of regulation is high, and comfort is good.
As shown in Figure 1, Fig. 1 is the terminal structure schematic diagram for the hardware running environment that the embodiment of the present invention is related to.
The terminal of that embodiment of the invention can be PC, be also possible to smart phone, tablet computer, E-book reader, MP3
(Moving Picture Experts Group Audio Layer III, dynamic image expert's compression standard audio level 3)
Player, MP4 (Moving Picture Experts Group Audio Layer IV, dynamic image expert's compression standard sound
Frequency level 3) the packaged type terminal device having a display function such as player, portable computer.The terminal is for reality
The precision of existing electric expansion valve is adjusted, and control needs to adjust the indoor unit of electronic expansion valve opening.The terminal and air conditioner connect
It connects, for controlling the operation of air conditioner.
As shown in Figure 1, the terminal may include: processor 1001, such as CPU, network interface 1004, user interface
1003, memory 1005, communication bus 1002.Wherein, communication bus 1002 is for realizing the connection communication between these components.
User interface 1003 may include display screen (Display), input unit such as keyboard (Keyboard), optional user interface
1003 can also include standard wireline interface and wireless interface.Network interface 1004 optionally may include that the wired of standard connects
Mouth, wireless interface (such as WI-FI interface).Memory 1005 can be high speed RAM memory, be also possible to stable memory
(non-volatile memory), such as magnetic disk storage.Memory 1005 optionally can also be independently of aforementioned processor
1001 storage device.
Optionally, terminal can also include camera, RF (Radio Frequency, radio frequency) circuit, sensor, audio
Circuit, WiFi module etc..Wherein, sensor such as optical sensor, motion sensor and other sensors.Specifically, light
Sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can according to the light and shade of ambient light come
The brightness of display screen is adjusted, proximity sensor can close display screen and/or backlight when mobile terminal is moved in one's ear.As
One kind of motion sensor, gravity accelerometer can detect the size of (generally three axis) acceleration in all directions, quiet
Size and the direction that can detect that gravity when only, the application that can be used to identify mobile terminal posture are (such as horizontal/vertical screen switching, related
Game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Certainly, mobile terminal can also match
The other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, temperature sensor are set, it is no longer superfluous herein
It states.
It will be understood by those skilled in the art that the restriction of the not structure paired terminal of terminal structure shown in Fig. 1, can wrap
It includes than illustrating more or fewer components, perhaps combines certain components or different component layouts.
As shown in Figure 1, as may include that operating system, network are logical in a kind of memory 1005 of computer storage medium
Believe module, the control application program of Subscriber Interface Module SIM and electric expansion valve.
In terminal shown in Fig. 1, network interface 1004 is mainly used for connecting background server, carries out with background server
Data communication；User interface 1003 is mainly used for connecting client (user terminal), carries out data communication with client；And processor
1001 can be used for calling the control application program of the electric expansion valve stored in memory 1005, and execute following operation:
When the electric expansion valve of current indoor machine needs to adjust, where the electric expansion valve that acquisition currently needs to adjust
Aperture section and adjusting direction；
Determine adjustment amount corresponding with the aperture section；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
Further, processor 1001 can call the control application journey of the electric expansion valve stored in memory 1005
Sequence also executes following operation:
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second default temperature
When spending threshold value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to reduce aperture.
Further, processor 1001 can call the control application journey of the electric expansion valve stored in memory 1005
Sequence also executes following operation:
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as the first preset temperature threshold in the Δ T2B, reduces preset value as the in the Δ T2B
Two temperature thresholds.
Further, processor 1001 can call the application program of the electric expansion valve stored in memory 1005, also
Execute following operation:
The preset value is 0.5 degree to 2.0 degree.
Further, processor 1001 can call the control application journey of the electric expansion valve stored in memory 1005
Sequence also executes following operation:
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
Referring to Fig. 2, the first embodiment of the present invention provides a kind of control method of electric expansion valve, the electric expansion valve
Control method include:
Step S10 obtains the electronic expansion for currently needing to adjust when the electric expansion valve of current indoor machine needs to adjust
Aperture section and adjusting direction where valve；
In one embodiment of this invention, the electric expansion valve is air conditioner room unit electric expansion valve, the air-conditioning
Device is multi-connected machine, and an outdoor unit connects multiple indoor units, and each indoor unit is provided with corresponding electric expansion valve, each interior
Machine individually controls, and the flow of refrigerant is controlled by the aperture regulation of electric expansion valve.After air conditioner unlatching, unlatching can be passed through
One indoor unit is opened or is opened multiple indoor units and opens, and after opening air conditioner, needs the electric expansion valve to indoor unit
It is controlled, and then controls the ability freezed to indoor environment or heated, to provide comfortable indoor environment.It is run in air conditioner
It is not in the process that the electric expansion valve of each indoor unit is required to adjust, and needs to adjust in the electric expansion valve of current indoor machine
When section, the aperture section and adjusting direction where the electric expansion valve for currently needing to adjust are obtained, at interval of preset time (root
It is arranged according to demand, for example, 1min or 2min etc.), whether detection, which once needs to adjust or receive regulating command, is adjusted.Institute
Stating electric expansion valve has many apertures, and the flow of corresponding aperture difference refrigerant is different, and the adjusting direction is to increase aperture, reduce
Three kinds of aperture of aperture or holding.It is different according to demand and have different adjusting directions.When determining aperture section, sensing is first passed through
Device detects the opening value of Current electronic expansion valve, and Current electronic can be obtained in the aperture section being arranged according to opening value and in advance
Aperture section locating for expansion valve.The sensor can be Dorothy Holman sensor etc..
Step S20 determines adjustment amount corresponding with the aperture section；
Preset in advance has the mapping relations of aperture section and adjustment amount, and each aperture section corresponds to different adjustment amounts.?
After getting aperture section locating for the electric expansion valve of current indoor machine and adjusting direction, determined according to the aperture section
The adjustment amount of electric expansion valve.
Specifically, with reference to Fig. 3, the process of determination adjustment amount corresponding with the aperture section includes:
Step S21, instructs according to electronic expansion valve controls, and control electric expansion valve runs to each aperture；
Step S22 obtains the flow of each aperture run to, draws flow according to the flow of each aperture of acquisition
Curve；
Step S23 divides multiple aperture sections according to flow curve, and corresponding aperture tune is arranged for each aperture section
Section amount；
Step S24 determines adjustment amount corresponding with the aperture section according to the aperture section of setting and aperture regulation amount.
In one embodiment of this invention, control electric expansion valve runs to each aperture, measures the cold medium flux under each aperture, and
Flow curve is drawn according to the flow of measurement, the aperture of electric expansion valve is divided by several aperture sections according to flow curve,
It is each aperture after demarcation interval each for example, each of curve linearity range can be divided into an aperture section
Corresponding aperture regulation amount is arranged in section.For example, adjustment amount s works as K > M, then adjustment amount s=a if current aperture is k；Work as M
≤ K < N, then s=b；As K≤N, then s=c, M and N are arranged according to flow curve, and a and b and c correspond to the setting of aperture section.
Step S30, according to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
After determining adjustment amount, aperture tune is carried out to the electric expansion valve of current indoor machine according to adjustment direction and adjustment amount
Section, for example, increase aperture or reduce aperture etc..Different aperture regulation amounts is set by the different sections of correspondence, so that according to opening
After spending regulated quantity adjusting, after air conditioner operation, the cold medium flux curve of each indoor unit is linear.According to electric expansion valve
Flow curve, sectional-regulated aperture, degree of regulation is high, and comfort is good.
It is different by the adjustment amount of the electric expansion valve in each aperture section in the present embodiment, according to the stream of electric expansion valve
Curve is measured, sectional-regulated aperture, degree of regulation is high, and comfort is good.
Further, referring to Fig. 4, the second embodiment of the present invention provides a kind of air conditioner room unit control method, is based on
Above-mentioned Fig. 2 and embodiment shown in Fig. 3, it is described obtain currently need to adjust electric expansion valve adjustment direction the step of packet
It includes:
Step S11 detects the outlet temperature T2B of the evaporator of the current indoor machine；
Step S12 determines the current indoor machine when the outlet temperature T2B is greater than the first preset temperature threshold
The adjusting direction of electric expansion valve is to increase aperture；
Step S13 when the outlet temperature T2B is less than or equal to the first preset temperature threshold, and is greater than or equal to the
When two preset temperature thresholds, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
Step S14 determines the current indoor machine when the outlet temperature T2B is less than the second preset temperature threshold
The adjusting direction of electric expansion valve is to reduce aperture.
In the present embodiment, for the more reasonable aperture for adjusting electric expansion valve, according to the evaporator of indoor unit
Outlet temperature is to determine whether need to adjust the aperture of electric expansion valve.Specifically, the preset temperature threshold of outlet temperature T2B > first
When value, increase electronic expansion valve of indoor unit aperture；Second preset temperature threshold≤the preset temperature threshold of outlet temperature T2B≤first
When, keep electronic expansion valve opening；When outlet temperature T2B is less than the second preset temperature threshold, electronic expansion valve of indoor unit is reduced
Aperture.The setting of first preset temperature threshold and the second preset temperature threshold includes: to obtain the indoor units of all unlatchings to go out
Mouth temperature, and calculate the average value Δ T2B of the outlet temperature of acquisition；Increase preset value as the first default temperature in the Δ T2B
Threshold value is spent, reduces preset value as second temperature threshold value in the Δ T2B, the preset value is according to user demand and system performance
Setting, for example, being set as 0.5 degree to 2.0 degree.In an embodiment of the present invention, making primary judgement at interval of preset time is
It is no to need that the electric expansion valve of indoor unit is adjusted, the judgment mode mode as described above, the preset time root
Judged according to flow curve, for example, at the aperture of the electric expansion valve of current detection when the lower end in aperture section, institute
The length for stating preset time setting, when being in the upper end in aperture section, the preset time is arranged short.
The present embodiment by the outlet temperature of indoor machine evaporation to determine whether need to be adjusted electric expansion valve,
And the basis judged is calculated as the evaluation of estimate of other indoor unit outlet temperatures under multi-connected machine, so that the adjusting of electric expansion valve
It is more accurate, improve the comfort of air conditioner.
In one embodiment, the present invention also provides a kind of air conditioner, the air conditioner includes: memory, processor and deposits
The control program for the electric expansion valve that can be run on the memory and on the processor is stored up, the electric expansion valve
Control program realizes following steps when being executed by the processor:
When the electric expansion valve of current indoor machine needs to adjust, where the electric expansion valve that acquisition currently needs to adjust
Aperture section and adjusting direction；
In one embodiment of this invention, the electric expansion valve is air conditioner room unit electric expansion valve, the air-conditioning
Device is multi-connected machine, and an outdoor unit connects multiple indoor units, and each indoor unit is provided with corresponding electric expansion valve, each interior
Machine individually controls, and the flow of refrigerant is controlled by the aperture regulation of electric expansion valve.After air conditioner unlatching, unlatching can be passed through
One indoor unit is opened or is opened multiple indoor units and opens, and after opening air conditioner, needs the electric expansion valve to indoor unit
It is controlled, and then controls the ability freezed to indoor environment or heated, to provide comfortable indoor environment.It is run in air conditioner
It is not in the process that the electric expansion valve of each indoor unit is required to adjust, and needs to adjust in the electric expansion valve of current indoor machine
When section, the aperture section and adjusting direction where the electric expansion valve for currently needing to adjust are obtained.The electric expansion valve has
The flow of many apertures, corresponding aperture difference refrigerant is different, and the adjusting direction is to increase aperture, reduce aperture or keep aperture
Three kinds.It is different according to demand and have different adjusting directions.When determining aperture section, sensor detection Current electronic is first passed through
The opening value of expansion valve, the aperture section being arranged according to opening value and in advance can be obtained opens locating for Current electronic expansion valve
Spend section.The sensor can be Dorothy Holman sensor etc..
Determine adjustment amount corresponding with the aperture section；
Preset in advance has the mapping relations of aperture section and adjustment amount, and each aperture section corresponds to different adjustment amounts.?
After getting aperture section locating for the electric expansion valve of current indoor machine and adjusting direction, determined according to the aperture section
The adjustment amount of electric expansion valve.
Specifically, the process of determination adjustment amount corresponding with the aperture section includes:
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.In the present invention
An embodiment in, control electric expansion valve run to each aperture, measure the cold medium flux under each aperture, and according to measurement
Flow draw flow curve, the aperture of electric expansion valve is divided by several aperture sections according to flow curve, it is each for example,
Each of curve linearity range can be divided into an aperture section, after demarcation interval, be arranged for each aperture section
Corresponding aperture regulation amount.For example, adjustment amount s works as K > M, then adjustment amount s=a if current aperture is k；As M≤K < N, then s
=b；As K≤N, then s=c, M and N are arranged according to flow curve, and a and b and c correspond to the setting of aperture section.
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
After determining adjustment amount, aperture tune is carried out to the electric expansion valve of current indoor machine according to adjustment direction and adjustment amount
Section, for example, increase aperture or reduce aperture etc..Different aperture regulation amounts is set by the different sections of correspondence, so that according to opening
After spending regulated quantity adjusting, after air conditioner operation, the cold medium flux curve of each indoor unit is linear.According to electric expansion valve
Flow curve, sectional-regulated aperture, degree of regulation is high, and comfort is good.
It is different by the adjustment amount of the electric expansion valve in each aperture section in the present embodiment, according to the stream of electric expansion valve
Curve is measured, sectional-regulated aperture, degree of regulation is high, and comfort is good.
Further, following steps are realized when the control program of the electric expansion valve is executed by the processor:
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second default temperature
When spending threshold value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to reduce aperture.
In the present embodiment, for the more reasonable aperture for adjusting electric expansion valve, according to the evaporator of indoor unit
Outlet temperature is to determine whether need to adjust the aperture of electric expansion valve.Specifically, the preset temperature threshold of outlet temperature T2B > first
When value, increase electronic expansion valve of indoor unit aperture；Second preset temperature threshold≤the preset temperature threshold of outlet temperature T2B≤first
When, keep electronic expansion valve opening；When outlet temperature T2B is less than the second preset temperature threshold, electronic expansion valve of indoor unit is reduced
Aperture.The setting of first preset temperature threshold and the second preset temperature threshold includes: to obtain the indoor units of all unlatchings to go out
Mouth temperature, and calculate the average value Δ T2B of the outlet temperature of acquisition；Increase preset value as the first default temperature in the Δ T2B
Threshold value is spent, reduces preset value as second temperature threshold value in the Δ T2B, the preset value is according to user demand and system performance
Setting, for example, being set as 0.5 degree to 2.0 degree.
The present embodiment by the outlet temperature of indoor machine evaporation to determine whether need to be adjusted electric expansion valve,
And the basis judged is calculated as the evaluation of estimate of other indoor unit outlet temperatures under multi-connected machine, so that the adjusting of electric expansion valve
It is more accurate, improve the comfort of air conditioner.
In addition, the embodiment of the present invention also proposes a kind of computer readable storage medium, the computer readable storage medium
On be stored with the control program of electric expansion valve, following behaviour is realized when the control program of the electric expansion valve is executed by processor
Make:
When the electric expansion valve of current indoor machine needs to adjust, where the electric expansion valve that acquisition currently needs to adjust
Aperture section and adjusting direction；
Determine adjustment amount corresponding with the aperture section；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine.
Further, following operation is also realized when the control program of the electric expansion valve is executed by processor:
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second default temperature
When spending threshold value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electronic expansion of the current indoor machine is determined
The adjusting direction of valve is to reduce aperture.
Further, following operation is also realized when the control program of the electric expansion valve is executed by processor:
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as the first preset temperature threshold in the Δ T2B, reduces preset value as the in the Δ T2B
Two temperature thresholds.
Further, following operation is also realized when the control program of the electric expansion valve is executed by processor:
The preset value is 0.5 degree to 2.0 degree.
Further, following operation is also realized when the control program of the electric expansion valve is executed by processor:
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of control method of electric expansion valve, which is characterized in that the control of the electric expansion valve the following steps are included:
When the electric expansion valve of current indoor machine needs to adjust, the aperture where the electric expansion valve for currently needing to adjust is obtained
Section and adjusting direction；
According to the mapping relations in the aperture section and adjustment amount, adjustment amount corresponding with the aperture section is determined；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine；
The step that adjustment amount corresponding with the aperture section is determined according to the mapping relations of the aperture section and adjustment amount
Suddenly include:
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
2. the control method of electric expansion valve as described in claim 1, which is characterized in that the current needs of acquisition were adjusted
The step of adjustment direction of electric expansion valve includes:
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electric expansion valve of the current indoor machine is determined
Adjusting direction is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second preset temperature threshold
When value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electric expansion valve of the current indoor machine is determined
Adjusting direction is to reduce aperture.
3. the control method of electric expansion valve as claimed in claim 2, which is characterized in that the method also includes:
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as first preset temperature threshold in the Δ T2B, reduces preset value as institute in the Δ T2B
State the second preset temperature threshold.
4. the control method of electric expansion valve as claimed in claim 3, which is characterized in that the preset value is 0.5 degree Celsius
To 2.0 degrees Celsius.
5. a kind of air conditioner, which is characterized in that the air conditioner includes: memory, processor and is stored on the memory
And the control program for the electric expansion valve that can be run on the processor, the control program of the electric expansion valve is by the place
Reason device realizes following steps when executing:
When the electric expansion valve of current indoor machine needs to adjust, the aperture where the electric expansion valve for currently needing to adjust is obtained
Section and adjusting direction；
According to the mapping relations in the aperture section and adjustment amount, adjustment amount corresponding with the aperture section is determined；
According to the adjustment amount and the electric expansion valve for adjusting direction and adjusting the current indoor machine；
The processor is also used to execute the control program of the electric expansion valve, to perform the steps of
It is instructed according to electronic expansion valve controls, control electric expansion valve runs to each aperture；
The flow for obtaining each aperture run to draws flow curve according to the flow of each aperture of acquisition；
Multiple aperture sections are divided according to flow curve, and corresponding aperture regulation amount is set for each aperture section；
Adjustment amount corresponding with the aperture section is determined according to the aperture section of setting and aperture regulation amount.
6. air conditioner as claimed in claim 5, which is characterized in that the processor is also used to execute the electric expansion valve
Program is controlled, to perform the steps of
Detect the outlet temperature T2B of the evaporator of the current indoor machine；
When the outlet temperature T2B is greater than the first preset temperature threshold, the electric expansion valve of the current indoor machine is determined
Adjusting direction is to increase aperture；
When the outlet temperature T2B is less than or equal to the first preset temperature threshold, and it is greater than or equal to the second preset temperature threshold
When value, the adjusting direction of the electric expansion valve of the current indoor machine is determined to keep aperture；
When the outlet temperature T2B is less than the second preset temperature threshold, the electric expansion valve of the current indoor machine is determined
Adjusting direction is to reduce aperture.
7. air conditioner as claimed in claim 6, which is characterized in that the processor is also used to execute the electric expansion valve
Program is controlled, to perform the steps of
The indoor unit outlet temperature of all unlatchings is obtained, and calculates the average value Δ T2B of the outlet temperature of acquisition；
Increase preset value as first preset temperature threshold in the Δ T2B, reduces preset value as institute in the Δ T2B
State the second preset temperature threshold.
8. air conditioner as claimed in claim 7, which is characterized in that the preset value is 0.5 degree Celsius to 2.0 degrees Celsius.
9. a kind of computer readable storage medium, which is characterized in that it is swollen to be stored with electronics on the computer readable storage medium
The control program of swollen valve is realized when the control program of the electric expansion valve is executed by processor as any in Claims 1-4
The step of control method of electric expansion valve described in.
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Cited By (1)
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| CN107940843A (en) * | 2017-11-03 | 2018-04-20 | 宁波奥克斯电气股份有限公司 | A kind of frequency-changeable compressor reduces the control method and device of compression ratio |
| CN110089941B (en) * | 2019-04-10 | 2022-04-29 | 深圳拓邦股份有限公司 | Temperature regulation control method and system and drinking equipment |
| CN110160231B (en) * | 2019-05-29 | 2021-11-30 | 广东美的暖通设备有限公司 | Valve control method, indoor unit, and computer-readable storage medium |
| CN110360728B (en) * | 2019-08-05 | 2020-11-03 | 珠海格力电器股份有限公司 | Flow adjusting method, medium, device, equipment and air conditioner |
| CN111486579B (en) * | 2020-04-29 | 2021-11-05 | 广东美的暖通设备有限公司 | Multi-split system and control method and device thereof |
| CN112254311B (en) * | 2020-10-14 | 2021-10-08 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve and air conditioner |
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