CN108317782A - A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture - Google Patents

A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture Download PDF

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Publication number
CN108317782A
CN108317782A CN201810129670.1A CN201810129670A CN108317782A CN 108317782 A CN108317782 A CN 108317782A CN 201810129670 A CN201810129670 A CN 201810129670A CN 108317782 A CN108317782 A CN 108317782A
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CN
China
Prior art keywords
valve body
valve
aperture
operating parameter
tune
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810129670.1A
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Chinese (zh)
Inventor
杨杰
赖长明
施永康
孙军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Gaoermei Refrigeration Equipment Co Ltd
Original Assignee
Guangdong Gaoermei Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Gaoermei Refrigeration Equipment Co Ltd filed Critical Guangdong Gaoermei Refrigeration Equipment Co Ltd
Priority to CN201810129670.1A priority Critical patent/CN108317782A/en
Publication of CN108317782A publication Critical patent/CN108317782A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The present invention provides a kind of tune valve method of frequency conversion system memory valve body aperture, by the adjusting for remembering valve body aperture regulation, fast selecting valve body initial opening and the best aperture of valve body, so that refrigeration system is quickly run under best valve body aperture, improves the heating capacity and Energy Efficiency Ratio of system.A kind of tune valve method of present invention frequency conversion system memory valve body aperture includes:Step 1 obtains the operating parameter of refrigerating plant when refrigerating plant, which is switched on, to be run;Step 2 judges the operating parameter whether has been recorded in preset parameter;Step 3, if so, obtain the best aperture Pmax of the electric expansion valve to match with the operating parameter, and by the valve body aperture regulation of electric expansion valve to Pmax;If it is not, then determining valve body initial opening according to the operating parameter, and the valve body aperture of electric expansion valve is adjusted by the first presetting method.The present invention also provides the tune valve gears that a kind of frequency conversion system remembers valve body aperture.

Description

A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture
Technical field
The present invention relates to the tune valve technologies of air conditioner heat pump system, and in particular to a kind of tune of frequency conversion system memory valve body aperture Valve method.The invention further relates to the tune valve gears that a kind of frequency conversion system remembers valve body aperture.
Background technology
Existing air-conditioning heat pump product, to improve product use scope, the throttle part of refrigeration system is generally electronic expansion Valve.When air-conditioning heat pump product is run, control system is by detecting the degree of superheat come regulation valve body aperture.When the degree of superheat is less than certain value When, illustrate that refrigeration system refrigerant is excessive, the refrigerant after evaporation does not have evaporating completely, control system constantly to detect and send out arteries and veins Punching is walked by the valve of setting and turns electronic expansion valve body aperture down, reduces refrigerating system coolant internal circulating load;When the degree of superheat is more than one When definite value, illustrate that refrigeration system circulating mass of refrigerant is insufficient, superheat state occurs in return-air, and control system constantly sends out pulse, presses The valve step of setting tunes up valve body aperture, increases the internal circulating load of refrigeration system refrigerant;When the degree of superheat is in a certain interval value, Stop that valve, control system is adjusted to continue monitoring operation.
As seen from the above, the prior art air conditioner heat pump system operation after, valve body aperture with evaporation side environment temperature, Condensation side environment temperature and the continuous regulation valve body aperture of electrical part running frequency, influence heating capacity, the energy of air conditioner heat pump system Effect ratio and service life.
And control system is by the valve step section of setting, the steps adjusting of valve body aperture appearance, in nominal environment temperature and frequency Under rate, valve body oscillatory operation between certain two continuous valve step, the heating capacity and Energy Efficiency Ratio of air conditioner heat pump system follow periodic wave It is dynamic, cause end heating capacity or refrigerating capacity periodically to increase or reduce, influences the comfort using end.
Valve body aperture is unstable to cause electronic expansion frequently to send out tune valve pulse, to accelerate valve body aging speed, shortens Product service life.
Invention content
The present invention provides a kind of tune valve method of frequency conversion system memory valve body aperture, by memory valve body aperture regulation, soon Speed chooses the adjusting of valve body initial opening and the best aperture of valve body, and refrigeration system is made quickly to be run under best valve body aperture, The heating capacity and Energy Efficiency Ratio of raising system.
A kind of tune valve method of present invention frequency conversion system memory valve body aperture includes:
Step 1 obtains the operating parameter of refrigerating plant when refrigerating plant, which is switched on, to be run;
Step 2 judges the operating parameter whether has been recorded in preset parameter;
Step 3, if so, the best aperture Pmax of the electric expansion valve to match with the operating parameter is obtained, and will The valve body aperture regulation of electric expansion valve is to Pmax;If it is not, then determining valve body initial opening according to the operating parameter, and pass through First presetting method adjusts the valve body aperture of electric expansion valve.
Preferably, first presetting method specifically includes:
Coil temperature and suction temperature are detected, the difference of the two is the return-air degree of superheat, according to the return-air degree of superheat tune valve;
After electric expansion valve is by return-air degree of superheat tune valve operation setting time, present valve body aperture is detected;
If in follow-up time, present valve body aperture remains unchanged, then present valve body aperture is determined as best aperture and deposited Store up the operating parameter corresponding to present valve body aperture.
Preferably, first presetting method further includes:If in follow-up time, present valve body aperture fluctuates, then regulating valve Body initial opening.
Preferably, the operating parameter includes evaporation side environment temperature, condensation side environment temperature and running frequency.
The present invention also provides the tune valve gears that a kind of frequency conversion system remembers valve body aperture, including:
Refrigerating plant;
Detection device, for detecting operating parameter when refrigerating plant booting operation;
Memory storage is stored with preset parameter in the memory storage;
The best opening adjusting device of valve body, when record has the operating parameter in the preset parameter, by electronic expansion The valve body aperture of valve is adjusted to the best aperture Pmax to match with the operating parameter;When not recorded in the preset parameter When the operating parameter, then valve body initial opening is determined according to the operating parameter, and electronics is adjusted by the first presetting method The valve body aperture of expansion valve.
Preferably, the operating parameter includes evaporation side environment temperature, condensation side environment temperature and running frequency.
Preferably, the memory storage, which includes memory no record device and memory, has recording device, the parameter preset to deposit Storage has in the memory in recording device.
After the operation of above-mentioned refrigerating plant, detection device detects current working, the different operating modes surveyed according to detection device Whether operating parameter inquiry memory storage has record, if the best aperture record of the valve body of the existing operating mode, control system are directly adjusted With the best aperture of the valve body, and by the best opening adjusting device of valve body by the valve body aperture of electric expansion valve adjust to it is described The best aperture Pmax that operating parameter matches;If memory storage can't detect the record value of current working, valve body is most preferably opened Degree regulating device determines valve body initial opening by detecting side evaporation side environment temperature and condensation side environment temperature, passes through return-air mistake Temperature application valve body aperture, come regulation valve body initial opening if finding the oscillation of valve body aperture by detection, if finding, valve body is opened Degree under certain operating mode press certain valve body aperture continuous service, the aperture be the best aperture of valve body, after finding best aperture, system by certain In best aperture storage to memory storage under operating mode.By the implementation of the tune valve technology, refrigeration system can quickly press valve body most Good aperture operation, shortens and adjusts the valve period, improve heating capacity and Energy Efficiency Ratio, extend product service life.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structure chart for the tune valve gear that a kind of frequency conversion system of the present invention remembers valve body aperture;
Fig. 2 is the flow for adjusting the first presetting method in valve method that a kind of frequency conversion system of the present invention remembers valve body aperture Figure.
Specific implementation mode
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 describes, 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.
As shown in Figure 1, a kind of tune valve gear of frequency conversion system memory valve body aperture of the present invention includes:
Refrigerating plant T10;
Detection device T20, for detecting operating parameter when refrigerating plant T10 booting operations;
It is stored with preset parameter in memory storage T30, the memory storage T30;
The best opening adjusting device T40 of valve body, it is when record has the operating parameter in the preset parameter, electronics is swollen The valve body aperture of swollen valve is adjusted to the best aperture Pmax to match with the operating parameter;When not recorded in the preset parameter When having the operating parameter, then valve body initial opening is determined according to the operating parameter, and electricity is adjusted by the first presetting method The valve body aperture of sub- expansion valve.
Due to being stored with preset parameter in memory storage T30, which includes that the best valve body under each operating mode is opened Degree has operating parameter there are record in preset parameter and records two kinds of situations, the best opening adjusting device of valve body without operating parameter T40 executes different operation according to different situations.If after refrigerating plant booting operation, by detecting each temperature spot temperature, according to inspection The operating parameter measured can find its corresponding best opening value of valve body, then the best aperture of the memory based valve body of control system The fast rapidly adjusting valve of parameter value.
For the ease of executing, memory storage T30 can be made of memory recording device T32 and memory no record device T31, When record has operating parameter in preset parameter, memory has recording device T32 to be held with the best opening adjusting device T40 cooperations of valve body Row, the valve body aperture of electric expansion valve is adjusted to the best aperture Pmax to match with the operating parameter;Work as preset parameter When middle no operating parameter record, memory no record device T31 is executed with the best opening adjusting device T40 cooperations of valve body, according to institute It states operating parameter and determines valve body initial opening, and adjust the valve body aperture of electric expansion valve by the first presetting method.
By above description it is found that a kind of tune valve gear of frequency conversion system memory valve body aperture includes refrigerating plant T10, inspection It surveys device T20, memory storage T30 and valve body best opening adjusting device T40, the refrigerating plant T10 is equipped with compressor, four-way The parts such as valve, throttle valve, wind turbine, the detection device T20 are equipped with environmental probe, coil pipe probe, return-air probe, water temperature probe Deng monitoring temperature device, the memory storage T30, which includes memory, recording device T32 and memory no record device T31.
After refrigerating plant T10 operations, detection device T20 detects current working, the different works surveyed according to detection device T20 Whether the operating parameter inquiry memory storage T30 of condition has record, if the best aperture record of the valve body of the existing operating mode, control system Directly invoke the best aperture of the valve body, and by the best opening adjusting device T40 of valve body by the valve body aperture tune of electric expansion valve The whole best aperture Pmax extremely to match with the operating parameter;If memory storage T30 can't detect the record value of current working, Then the best opening adjusting device T40 of valve body determines that valve body is initial by detecting side evaporation side environment temperature and condensation side environment temperature Aperture is initially opened if finding the oscillation of valve body aperture by detection come regulation valve body by return-air degree of superheat application valve body aperture Degree, if finding, valve body aperture presses certain valve body aperture continuous service under certain operating mode, which is the best aperture of valve body, finds best After aperture, system will be in the best aperture storage to memory storage T30 under certain operating mode.Pass through the implementation of the tune valve technology, refrigeration System can quickly press the best aperture operation of valve body, shorten and adjust the valve period, improve heating capacity and Energy Efficiency Ratio, extend product and use the longevity Life.
It is consistent with the frequency conversion system shown in FIG. 1 memory tune valve gear of valve body aperture, as shown in Fig. 2, of the invention Frequency conversion system memory valve body aperture tune valve method be:
Step 101:When refrigerating plant, which is switched on, to be run, the operating parameter of refrigerating plant is obtained.
In a step 101, the operating parameter of refrigerating plant can be detected by detection device detection device T20, operating parameter It may include vaporizer side environment temperature, condenser side environment temperature, running frequency etc..
Step 102:Judge whether recorded operating parameter in preset parameter.
In a step 102, preset parameter is storable in memory storage T30, can there is operating parameter record in preset parameter Or it is recorded without operating parameter.
Step 103:When record has operating parameter in preset parameter, then acquisition is most preferably opened with what above-mentioned operating parameter matched Angle value Pmax, and the valve body aperture of electric expansion valve is adjusted to Pmax.
In step 103, the best opening value that different operating parameters match is stored in memory storage, if preset parameter In have the record of the operating parameter, then the best opening adjusting device T40 of valve body obtains the best aperture corresponding to the operating parameter Pmax, and the valve body aperture of electric expansion valve is adjusted to Pmax and is connect after control system adjusts the best aperture of good idea expansion valve The operation for returning to step 101 control refrigerating plant.
The tune valve method of above-mentioned frequency conversion system memory valve body aperture further includes:
When refrigerating plant, which is switched on, to be run, the operating parameter of refrigerating plant is obtained;Judge whether recorded in preset parameter Operating parameter determines valve body initial opening, and pass through if not recorded operating parameter in preset parameter according to operating parameter One presetting method adjusts the valve body aperture of electric expansion valve.Control system is found by the first presetting method regulation valve body aperture After best valve body aperture, by the corresponding valve body aperture reference record of the duty parameter to memory storage, confession identical operating mode next time The operation of parameter.Control system regulates the operation that the best aperture of valve body followed by returns to step 101 control refrigerating plant.
First presetting method specifically includes:
Step 201:Refrigerating plant booting operation.
Step 202:Detect the parameter value of evaporation side environment temperature Tr0, condensation side environment temperature Tl0 and running frequency Pf0.
Step 203:According to the parameter value of evaporation side environment temperature Tr0, condensation side environment temperature Tl0 and running frequency Pf0 Valve body initial opening P0 is determined, by the valve body aperture regulation of electric expansion valve to corresponding P0.
In step 203, valve body initial opening is chosen by detecting environment temperature and running frequency parameter value, shortens valve body most Good aperture tune regulating cycle improves and adjusts valve speed.
Step 204:Return air temperature angle value Th and coil temperature value Tp is detected, the difference of the two is the return-air degree of superheat.
Step 205:The valve body aperture that electric expansion valve is controlled according to the return-air degree of superheat=Th-Tp, i.e., according to return-air mistake Temperature tune valve.
Step 206:Judge electric expansion valve by return-air degree of superheat tune valve run time t whether >=setting time Ts.
If when according to the run time t < Ts of return-air degree of superheat regulation valve body aperture, system returns to step 205 according to return-air The degree of superheat continues regulation valve body aperture.
Step 207:After run time t >=Ts of the electric expansion valve by the operation of return-air degree of superheat tune valve, detection valve body is current Aperture Pt.
Step 208:Continue to detect present valve body aperture in follow-up time, if the current valve detected twice in interval time T Body aperture is remained unchanged as Pt, then present valve body aperture is determined as best aperture and stored corresponding to present valve body aperture Operating parameter, i.e., will be in Trt, Tlt, Pft and Pt typing memory storage.
If it is understood that control system is not sent out in T at runtime adjusts valve instruction, control system memory is current Valve body aperture Pt is the best valve body aperture under the operating mode, i.e. Pt=Pmax;After determining best valve body aperture, system returns to step 207 continue to monitor refrigerating plant operation.
If continuing to detect present valve body aperture in follow-up time, if present valve body aperture fluctuates in interval time T, adjust Valve body initial opening, specifically includes:
Step 209:Control system continues to detect present valve body aperture, if system discovery valve body aperture is adjusted, detection And judge whether first time present valve body aperture meets Pt1=Pt ± Ps in interval time T.
Step 210:If Pt1=Pt ± Ps, control system then detects whether second of present valve body aperture is adjusted Section occurs detecting after adjusting and judges whether second of present valve body aperture meets Pt2=Pt.
If control system, which is not sent out, adjusts valve instruction, or sends out and adjust valve instruction but valve body aperture Pt2 is not equal to Pt, system returns to Step 207 continues to monitor and keep the operation of present valve body aperture.
Step 211:If Pt2=Pt, valve body initial opening is adjusted by P0t=P0 ± △ p in control system, and △ p are Ps, in order to control default valve body adjust step number.
Step 211:After valve body initial opening is adjusted, control system automatically updates valve body initial opening value, valve body Initial opening value P0t=P0 ± △ p are to adjust the initial value of initial opening value again with the initial opening value after this adjusting, I.e. again ± 2 △ p of regulation valve body initial opening P0t=P0.
Control system completion valve body initial opening returns step 204 after adjusting and valve body aperture is adjusted, according to return-air Degree of superheat Th-Tp carrys out application valve body aperture, by running verification repeatedly, finds the best aperture of current environmental temperature lower valve body, And it will be in the best opening value storage to memory storage of valve body under the operating mode.
The implementation that the tune valve method of valve body aperture is remembered by above-mentioned frequency conversion system, makes refrigeration system be quickly found out current fortune The best valve body aperture of row operating mode, improves the heating capacity and Energy Efficiency Ratio of refrigeration system.
By above description it is understood that in order to ensure refrigerating plant can find valve body most under continuous operating mode Good opening value, control system first detect memory storage whether there is or not the corresponding valve bodies of the operating mode most when transferring the best opening value of valve body Good aperture record (corresponding to different operating parameters per operating mode), if so, control system directly invokes, realization is quick, efficiently adjusts valve work( Energy.
If no, control system is by detecting evaporation side environment temperature Tr0, condensation side environment temperature Tl0 and running frequency The parameter value of Pf0 determines the initial aperture P0 of valve body by the correspondence of parameter value, shortens valve body best aperture tune section week Phase improves and valve speed is adjusted to make valve then by the difference intelligent regulating valve body aperture between suction temperature Th and coil temperature Tp Body aperture is adjusted toward best aperture direction.Wherein in order to ensure system can accurately find best valve body aperture, system is again Unit is not less than setting time with the run time of return-air degree of superheat tune valve before detecting the current aperture of valve body;The current valve of system detectio After body aperture Pt, whether is vibrated between continuous two valves step in order to accurate judgement valve body aperture, first detect first Whether secondary present valve body aperture is equal to Pt+Ps or Pt-Ps, if valve body aperture occurs adjusting and is equal to Pt+Ps or Pt-Ps, system Then second of present valve body aperture is detected, and judges whether it is equal to Pt, thus judges whether valve body aperture is vibrating, in order to Make the approach optimum value operation of valve body aperture, after there is oscillatory operation in system discovery valve body aperture, valve body initial opening P0t=P0 ± △ p, system automatically updates valve body initial opening after adjusting, i.e., the initial opening of the best aperture regulation of valve body is P0 ± 2 next time △ p enable refrigeration system in best valve body aperture by lasting change valve body initial opening come the most preferably fast aperture of regulation valve body Lower operation avoids valve body aperture from vibrating, improves the stability of refrigeration system;When control system detects that certain valve body aperture is maintained at It is run under certain Pt value, Pt values at this time are the best opening value Pmax of the operating mode lower valve body.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments Invention is explained in detail, it will be understood by those of ordinary skill in the art that:It still can be to aforementioned each implementation Technical solution recorded in example is modified or equivalent replacement of some of the technical features;And these modification or It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.

Claims (7)

1. a kind of tune valve method of frequency conversion system memory valve body aperture, which is characterized in that including:
Step 1 obtains the operating parameter of refrigerating plant when refrigerating plant, which is switched on, to be run;
Step 2 judges the operating parameter whether has been recorded in preset parameter;
Step 3, if so, obtain the best aperture Pmax of the electric expansion valve to match with the operating parameter, and by electronics The valve body aperture regulation of expansion valve is to Pmax;If it is not, then determining valve body initial opening according to the operating parameter, and pass through first Presetting method adjusts the valve body aperture of electric expansion valve.
2. tune valve method according to claim 1, which is characterized in that first presetting method includes:
Coil temperature and suction temperature are detected, the difference of the two is the return-air degree of superheat, according to the return-air degree of superheat tune valve;
After electric expansion valve is by return-air degree of superheat tune valve operation setting time, present valve body aperture is detected;
If in follow-up time, present valve body aperture remains unchanged, then present valve body aperture is determined as best aperture and stored to work as Operating parameter corresponding to front valve shell aperture.
3. tune valve method according to claim 2, which is characterized in that first presetting method further includes:If when follow-up In, present valve body aperture fluctuates, then regulation valve body initial opening.
4. tune valve method according to any one of claim 1 to 3, which is characterized in that the operating parameter includes evaporation Side environment temperature, condensation side environment temperature and running frequency.
5. a kind of tune valve gear of frequency conversion system memory valve body aperture, which is characterized in that including:
Refrigerating plant;
Detection device, for detecting operating parameter when refrigerating plant booting operation;
Memory storage is stored with preset parameter in the memory storage;
The best opening adjusting device of valve body, when record has the operating parameter in the preset parameter, by electric expansion valve Valve body aperture is adjusted to the best aperture Pmax to match with the operating parameter;It is described when not recorded in the preset parameter When operating parameter, then valve body initial opening is determined according to the operating parameter, and electronic expansion is adjusted by the first presetting method The valve body aperture of valve.
6. tune valve gear according to claim 5, which is characterized in that the operating parameter include evaporation side environment temperature, Condensation side environment temperature and running frequency.
7. tune valve gear according to claim 5, which is characterized in that the memory storage include memory no record device and Memory has recording device, and the parameter preset, which is stored in the memory, to be had in recording device.
CN201810129670.1A 2018-02-08 2018-02-08 A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture Pending CN108317782A (en)

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Application Number Priority Date Filing Date Title
CN201810129670.1A CN108317782A (en) 2018-02-08 2018-02-08 A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture

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Application Number Priority Date Filing Date Title
CN201810129670.1A CN108317782A (en) 2018-02-08 2018-02-08 A kind of the tune valve method and tune valve gear of frequency conversion system memory valve body aperture

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CN112033055A (en) * 2020-08-10 2020-12-04 广东纽恩泰新能源科技发展有限公司 Pre-protection control method for temperature of heating coil
CN112413937A (en) * 2020-11-23 2021-02-26 珠海格力电器股份有限公司 Water chilling unit and electronic expansion valve control method, device and system thereof
CN112413937B (en) * 2020-11-23 2022-05-31 珠海格力电器股份有限公司 Water chilling unit and electronic expansion valve control method, device and system thereof

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Application publication date: 20180724