CN110068179A - A kind of control method and device of electric expansion valve - Google Patents
A kind of control method and device of electric expansion valve Download PDFInfo
- Publication number
- CN110068179A CN110068179A CN201910323960.4A CN201910323960A CN110068179A CN 110068179 A CN110068179 A CN 110068179A CN 201910323960 A CN201910323960 A CN 201910323960A CN 110068179 A CN110068179 A CN 110068179A
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- expansion valve
- time
- valve opening
- electronic expansion
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 238000004378 air conditioning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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 method of electric expansion valve and device, control method includes the maxima and minima for determining electronic expansion valve opening corresponding with the maximum value of the running frequency of compressor and minimum value；Indoor real time temperature is obtained, the real-time running frequency of compressor is controlled；Calculate the variation tendency of the real-time running frequency of compressor；If the real-time running frequency of compressor becomes larger, then in the following regular time section, electronic expansion valve opening in unit time becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if the real-time running frequency of compressor becomes smaller, then in the following regular time section, electronic expansion valve opening in unit time becomes smaller, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, while effectively improving indoor temperature change generated in case speed, it can also effectively guarantee that temperature change is gentle, prevent room temperature from violent variation occur, prevent the discomfort for causing indoor user.
Description
Technical field
The present invention relates to field of intelligent control technology, more specifically to the control method and dress of a kind of electric expansion valve
It sets.
Background technique
Electric expansion valve is a kind of restricting element of refrigerant flow that can enter refrigerating plant by pre-set programs, and electronics is swollen
Swollen valve is mainly used for being controlled to adjust refrigerant flow by signal in air-conditioning equipment and passes through the liquid refrigerant of medium temperature high pressure
It, which throttles, becomes the moist steam of low-temp low-pressure.Some load variations acutely or operating condition wider range occasion, it is traditional
Restricting element (such as capillary, heating power expansion valve) have been unable to meet comfort and energy conservation in terms of requirement, electric expansion valve knot
Compressor variable capacity technology is closed to have had been more and more widely used.
The control system of air-conditioning equipment is considerably mature to the aperture regulation technology of electric expansion valve in the prior art,
The aperture regulation of common electric expansion valve is generally according to the operation power of compressor and the temperature parameter of refrigerant, still
Specific control algolithm is not good enough, is easy to impact the experience sense of user.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of control method and device of electric expansion valve.
The solution that the present invention solves its technical problem is:
A kind of control method of electric expansion valve, comprising the following steps:
Step 100, according to the maximum value and minimum value of the running frequency of compressor, the determining running frequency with compressor
Maximum value and the corresponding electronic expansion valve opening of minimum value maxima and minima；
Step 200, indoor real time temperature is obtained, according to indoor real time temperature and set indoor preset temperature, control
The real-time running frequency of compressor processed；
Step 300, the variation tendency of the real-time running frequency of compressor is calculated；
Step 400, if the real-time running frequency of compressor becomes larger, in the following regular time section, the unit time
Interior electronic expansion valve opening becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if compressor
Real-time running frequency becomes smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and
The variable quantity of electronic expansion valve opening in unit time is gradually increased.
As a further improvement of the above technical scheme, it in step 400, is opened using staircase function control electric expansion valve
One regular time section of future is divided into several identical chronomeres, if compressor is run in real time by degree in order
Frequency becomes larger, and electronic expansion valve opening is bigger than electronic expansion valve opening in previous chronomere in the latter chronomere, and
The variable quantity of electronic expansion valve opening is gradually increased in chronomere, if the real-time running frequency of compressor becomes smaller, when the latter
Between in unit electronic expansion valve opening it is smaller than electronic expansion valve opening in previous chronomere, and electronic expansion in chronomere
The variable quantity of valve opening is gradually increased.
As a further improvement of the above technical scheme, in step 400, if the real-time running frequency of compressor becomes larger,
In the following regular time section, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time are in arc-shaped function
Curved line relation, if the real-time running frequency of compressor becomes smaller, in the following regular time section, electronic expansion valve opening becomes
It is small, and electronic expansion valve opening and time are in arc-shaped function.
As a further improvement of the above technical scheme, in step 400, if the real-time running frequency of compressor becomes larger,
In the following regular time section, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time close in logarithmic function
System.
As a further improvement of the above technical scheme, in step 400, if the real-time running frequency of compressor becomes smaller,
In the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening and time close in logarithmic function
System.
The application also discloses a kind of control device of electric expansion valve simultaneously, comprising:
Default unit, for the maximum value and minimum value according to the running frequency of compressor, the determining fortune with compressor
The maxima and minima of the corresponding electronic expansion valve opening of maximum value and minimum value of line frequency；
Temperature sensor, for obtaining indoor real time temperature；
Input unit, for inputting the indoor preset temperature to be arranged；
First computing unit, for calculating compressor according to indoor real time temperature and set indoor preset temperature
Real-time running frequency；
Second computing unit, for calculating the variation tendency of the real-time running frequency of compressor；
Third computing unit calculates electric expansion valve and opens for the variation tendency according to the real-time running frequency of compressor
Degree, if the real-time running frequency of compressor becomes larger, in the following regular time section, the electric expansion valve in the unit time
Aperture becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if the real-time running frequency of compressor
Become smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and the electricity in the unit time
The variable quantity of sub- expansion valve opening is gradually increased.
As a further improvement of the above technical scheme, electronics is calculated using staircase function in the third computing unit
Expansion valve opening.
As a further improvement of the above technical scheme, in the third computing unit, if compressor runs frequency in real time
Rate becomes larger, then in the following regular time section, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time are in circle
Arcuation function, if the real-time running frequency of compressor becomes smaller, in the following regular time section, electronic expansion
Valve opening becomes smaller, and electronic expansion valve opening and time are in arc-shaped function.
As a further improvement of the above technical scheme, in the third computing unit, if compressor runs frequency in real time
Rate becomes larger, then in the following regular time section, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time are in pair
Number functional relation.
As a further improvement of the above technical scheme, in the third computing unit, if compressor runs frequency in real time
Rate becomes smaller, then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening and time are in pair
Number functional relation.
The beneficial effects of the present invention are: the present invention is become by the variation of the real-time running frequency of compressor in air-conditioning equipment
Gesture controls electronic expansion valve opening, single in the following regular time section if the real-time running frequency of compressor becomes larger
Electronic expansion valve opening in the time of position becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if
The real-time running frequency of compressor becomes smaller, then in the following regular time section, the electronic expansion valve opening in the unit time
Become smaller, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, effectively improves indoor temperature change generated in case speed
Simultaneously, additionally it is possible to effectively guarantee that temperature change is gentle, prevents room temperature from violent variation occur, prevents from causing indoor use
The discomfort of person.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is flow chart of the method for the present invention.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this Shen
A part of the embodiment please, rather than whole embodiments, are based on embodiments herein, and those skilled in the art is not paying
Other embodiments obtained under the premise of creative work belong to the range of the application protection.In addition, be previously mentioned in text
All connection relationships not singly refer to that component directly connects, and referring to can be according to specific implementation situation, by adding or reducing connection
Auxiliary, Lai Zucheng more preferably connection structure.Each technical characteristic in the invention, under the premise of not conflicting conflict
It can be with combination of interactions.Finally, it should be noted that such as term in text " center, upper and lower, left and right, vertical, horizontal, inside and outside "
The orientation or positional relationship of instruction is then to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description this technology side
Case and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore should not be understood as the limitation to the application.
Referring to Fig.1, this application discloses a kind of control method of electric expansion valve, first embodiment includes following step
It is rapid:
Step 100, according to the maximum value and minimum value of the running frequency of compressor, the determining running frequency with compressor
Maximum value and the corresponding electronic expansion valve opening of minimum value maxima and minima；
Step 200, indoor real time temperature is obtained, according to indoor real time temperature and set indoor preset temperature, control
The real-time running frequency of compressor processed；
Step 300, the variation tendency of the real-time running frequency of compressor is calculated；
Step 400, if the real-time running frequency of compressor becomes larger, in the following regular time section, the unit time
Interior electronic expansion valve opening becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if compressor
Real-time running frequency becomes smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and
The variable quantity of electronic expansion valve opening in unit time is gradually increased.
Specifically, variation tendency of the present embodiment by the real-time running frequency of compressor in air-conditioning equipment, control electricity
Sub- expansion valve opening, if the real-time running frequency of compressor becomes larger, in the following regular time section, in the unit time
Electronic expansion valve opening becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if compressor is real-time
Running frequency become smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and unit
The variable quantity of electronic expansion valve opening in time is gradually increased, while effectively improving indoor temperature change generated in case speed, additionally it is possible to
Effectively guarantee that temperature change is gentle, prevents room temperature from violent variation occur, prevents the discomfort for causing indoor user.
It is further used as preferred embodiment, in the present embodiment, in step 400, electronics is controlled using staircase function
One regular time section of future is divided into several identical chronomeres, if compressor is real by expansion valve opening in order
When running frequency become larger, electronic expansion valve opening is opened than electric expansion valve in previous chronomere in the latter chronomere
Degree is big, and the variable quantity of electronic expansion valve opening is gradually increased in chronomere, if the real-time running frequency of compressor becomes smaller, after
Electronic expansion valve opening is smaller than electronic expansion valve opening in previous chronomere in one chronomere, and electric in chronomere
The variable quantity of sub- expansion valve opening is gradually increased.
The second embodiment of the control mode of herein described electric expansion valve, first embodiment are compared, and difference exists
In in step 400, if the real-time running frequency of compressor becomes larger, in the following regular time section, electric expansion valve is opened
Degree becomes larger, and electronic expansion valve opening and time are in arc-shaped function, if the real-time running frequency of compressor becomes smaller,
Then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening and time are in arc-shaped letter
Number curve relationship.
Specifically, in the present embodiment, in step 400, if the real-time running frequency of compressor becomes larger, the following fixation
Period in, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time are in logarithmic function relationship；If compressor is real
When running frequency become smaller, then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening
It is in logarithmic function relationship with the time.
The application also discloses a kind of control device of electric expansion valve simultaneously, and first embodiment includes:
Default unit, for the maximum value and minimum value according to the running frequency of compressor, the determining fortune with compressor
The maxima and minima of the corresponding electronic expansion valve opening of maximum value and minimum value of line frequency；
Temperature sensor, for obtaining indoor real time temperature；
Input unit, for inputting the indoor preset temperature to be arranged；
First computing unit, for calculating compressor according to indoor real time temperature and set indoor preset temperature
Real-time running frequency；
Second computing unit, for calculating the variation tendency of the real-time running frequency of compressor；
Third computing unit calculates electric expansion valve and opens for the variation tendency according to the real-time running frequency of compressor
Degree, if the real-time running frequency of compressor becomes larger, in the following regular time section, the electric expansion valve in the unit time
Aperture becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if the real-time running frequency of compressor
Become smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and the electricity in the unit time
The variable quantity of sub- expansion valve opening is gradually increased.
It is further used as preferred embodiment, in the present embodiment, staircase function is used in the third computing unit
Calculate electronic expansion valve opening.
The second embodiment of the control device of herein described electric expansion valve, compared with first embodiment, difference exists
In the third computing unit, if the real-time running frequency of compressor becomes larger, in the following regular time section, electronics
Expansion valve opening becomes larger, and electronic expansion valve opening and time are in arc-shaped function, if compressor is run in real time
Frequency becomes smaller, then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening is in the time
Arc-shaped function.
Specifically, in the third computing unit, if the real-time running frequency of compressor becomes larger, following one fixed
In period, electronic expansion valve opening becomes larger, and electronic expansion valve opening and time are in logarithmic function relationship；If compressor is real-time
Running frequency become smaller, then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening with
Time is in logarithmic function relationship.
The better embodiment of the application is illustrated above, but the application is not limited to the specific embodiments,
Those skilled in the art can also make various equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, this
Equivalent variation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (10)
1. a kind of control method of electric expansion valve, which comprises the following steps:
Step 100, according to the maximum value and minimum value of the running frequency of compressor, determining and compressor running frequency is most
The maxima and minima of big value and the corresponding electronic expansion valve opening of minimum value；
Step 200, indoor real time temperature is obtained, according to indoor real time temperature and set indoor preset temperature, control pressure
The real-time running frequency of contracting machine；
Step 300, the variation tendency of the real-time running frequency of compressor is calculated；
Step 400, if the real-time running frequency of compressor becomes larger, in the following regular time section, in the unit time
Electronic expansion valve opening becomes larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if compressor is real-time
Running frequency become smaller, then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and unit
The variable quantity of electronic expansion valve opening in time is gradually increased.
2. a kind of control method of electric expansion valve according to claim 1, it is characterised in that: in step 400, using rank
Ladder type function controls electronic expansion valve opening, and one regular time section of future is divided into several identical times in order
Unit, if the real-time running frequency of compressor becomes larger, electronic expansion valve opening is more single than the previous time in the latter chronomere
Electronic expansion valve opening is big in position, and the variable quantity of electronic expansion valve opening is gradually increased in chronomere, if compressor is real-time
Running frequency become smaller, electronic expansion valve opening is than electronic expansion valve opening in previous chronomere in the latter chronomere
It is small, and the variable quantity of electronic expansion valve opening is gradually increased in chronomere.
3. a kind of control method of electric expansion valve according to claim 1, it is characterised in that: in step 400, if compression
The real-time running frequency of machine becomes larger, then in the following regular time section, electronic expansion valve opening becomes larger, and electric expansion valve
Aperture and time are in arc-shaped function, if the real-time running frequency of compressor becomes smaller, following one it is fixed when
Between in section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening and time are in arc-shaped function.
4. a kind of control method of electric expansion valve according to claim 3, it is characterised in that: in step 400, if compression
The real-time running frequency of machine becomes larger, then in the following regular time section, electronic expansion valve opening becomes larger, and electric expansion valve
Aperture and time are in logarithmic function relationship.
5. if according to a kind of control method of electric expansion valve as claimed in claim 3, it is characterised in that: in step 400, if pressure
The real-time running frequency of contracting machine becomes smaller, then in the following regular time section, electronic expansion valve opening becomes smaller, and electronic expansion
Valve opening and time are in logarithmic function relationship.
6. a kind of control device of electric expansion valve characterized by comprising
Default unit, for the maximum value and minimum value according to the running frequency of compressor, the determining operation frequency with compressor
The maxima and minima of the corresponding electronic expansion valve opening of maximum value and minimum value of rate；
Temperature sensor, for obtaining indoor real time temperature；
Input unit, for inputting the indoor preset temperature to be arranged；
First computing unit, for it is real-time to calculate compressor according to indoor real time temperature and set indoor preset temperature
Running frequency；
Second computing unit, for calculating the variation tendency of the real-time running frequency of compressor；
Third computing unit calculates electronic expansion valve opening for the variation tendency according to the real-time running frequency of compressor, if
The real-time running frequency of compressor becomes larger, then in the following regular time section, the electronic expansion valve opening in the unit time
Become larger, and the variable quantity of the electronic expansion valve opening in the unit time is gradually increased, if the real-time running frequency of compressor becomes smaller,
Then in the following regular time section, the electronic expansion valve opening in the unit time becomes smaller, and the electronics in the unit time is swollen
The variable quantity of swollen valve opening is gradually increased.
7. a kind of control device of electric expansion valve according to claim 6, which is characterized in that the third computing unit
It is middle that electronic expansion valve opening is calculated using staircase function.
8. a kind of control device of electric expansion valve according to claim 6, which is characterized in that the third computing unit
In, if the real-time running frequency of compressor becomes larger, in the following regular time section, electronic expansion valve opening becomes larger, and
Electronic expansion valve opening and time are in arc-shaped function, if the real-time running frequency of compressor becomes smaller, future one
In a regular time section, electronic expansion valve opening becomes smaller, and electronic expansion valve opening and time close in arc-shaped function curve
System.
9. a kind of control device of electric expansion valve according to claim 8, which is characterized in that the third computing unit
In, if the real-time running frequency of compressor becomes larger, in the following regular time section, electronic expansion valve opening becomes larger, and
Electronic expansion valve opening and time are in logarithmic function relationship.
10. a kind of control device of electric expansion valve according to claim 8, which is characterized in that the third calculates single
In member, if the real-time running frequency of compressor becomes smaller, in the following regular time section, electronic expansion valve opening becomes smaller,
And electronic expansion valve opening and time are in logarithmic function relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323960.4A CN110068179B (en) | 2019-04-22 | 2019-04-22 | Control method and device of electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323960.4A CN110068179B (en) | 2019-04-22 | 2019-04-22 | Control method and device of electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
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| CN110068179A true CN110068179A (en) | 2019-07-30 |
| CN110068179B CN110068179B (en) | 2021-04-27 |
Family
ID=67368428
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910323960.4A Active CN110068179B (en) | 2019-04-22 | 2019-04-22 | Control method and device of electronic expansion valve |
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| Country | Link |
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| CN (1) | CN110068179B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524765A (en) * | 2020-12-08 | 2021-03-19 | 青岛海尔空调器有限总公司 | Expansion valve control method and device for air conditioner, electronic equipment and storage medium |
| CN114076392A (en) * | 2020-08-17 | 2022-02-22 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN114322379A (en) * | 2021-12-16 | 2022-04-12 | 广东芬尼克兹节能设备有限公司 | Electronic expansion valve adjusting method and device, terminal equipment and storage medium |
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| JP2002195669A (en) * | 2000-11-10 | 2002-07-10 | Lg Electronics Inc | Control method for electronic expansion valve of air conditioner provided with two compressors |
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| CN112524765B (en) * | 2020-12-08 | 2022-10-28 | 青岛海尔空调器有限总公司 | Expansion valve control method and device for air conditioner, electronic equipment and storage medium |
| CN114322379A (en) * | 2021-12-16 | 2022-04-12 | 广东芬尼克兹节能设备有限公司 | Electronic expansion valve adjusting method and device, terminal equipment and storage medium |
| CN114322379B (en) * | 2021-12-16 | 2023-07-21 | 广东芬尼克兹节能设备有限公司 | Electronic expansion valve adjusting method and device, terminal equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN110068179B (en) | 2021-04-27 |
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Denomination of invention: Control method and device of electronic expansion valve Effective date of registration: 20230220 Granted publication date: 20210427 Pledgee: Industrial and Commercial Bank of China Limited Foshan Beijiao sub branch Pledgor: GUANGDONG MBO REFRIGERATION EQUIPMENT Co.,Ltd. Registration number: Y2023980032929 |
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