CN106403425A - Water chilling unit electronic expansion valve control method - Google Patents
Water chilling unit electronic expansion valve control method Download PDFInfo
- Publication number
- CN106403425A CN106403425A CN201510444441.5A CN201510444441A CN106403425A CN 106403425 A CN106403425 A CN 106403425A CN 201510444441 A CN201510444441 A CN 201510444441A CN 106403425 A CN106403425 A CN 106403425A
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- electric expansion
- aperture
- valve
- initial opening
- 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.)
- Granted
Links
Abstract
The invention relates to a water chilling unit electronic expansion valve control method. The water chilling unit electronic expansion valve control method comprises that during the operation process, the opening degree of the electronic expansion valve is adjusted on the basis of the operating parameter and the operating trend. According to the invention, the water chilling unit can operate under different working conditions, the fact that the electronic expansion valve is in a reasonable valve-regulating initial opening degree is determined, during the operation process, overregulation of the electronic expansion valve can be avoided, oscillation is reduced, the electronic expansion valve can be matched with the system quickly, the optimal mass flow rate of the system is achieved, and the fact that a compressor of the water chilling unit has an optimal effect, and the performance of the system is optimal is guaranteed.
Description
Technical field
The present invention relates to air-conditioning expansion valve, more particularly, to a kind of electronic expansion valve controls side of water chiller
Method.
Background technology
In air-conditioning equipment, generally air-conditioning equipment is adjusted using the method controlling the compressor air suction degree of superheat
The the opening or closing, so that equipment can normally run of internal electron expansion valve.Typically inhale actual
When the gas degree of superheat is more than degree of superheat desired value, the aperture of electric expansion valve increases；Actual suction superheat
During less than degree of superheat desired value, the aperture of electric expansion valve reduces；It is overheated that actual suction superheat is equal to
During degree desired value, the aperture of electric expansion valve is constant.At present, electric expansion valve suction superheat controls
Need to detect suction temperature and two variables of pressure of inspiration(Pi) occur that suction superheat is too high, too low vibration
Cause electric expansion valve and system followability poor, impact unit overall performance is it is impossible to give full play to electronics
The effect of the fine throttling of expansion valve.
Content of the invention
In view of this, in order to solve to exist in prior art, suction superheat is too high, too low vibration causes
Electric expansion valve is poor with system followability, the problem of impact unit overall performance, and the purpose of the present invention is
A kind of control method for electronic expansion valve of water chiller is proposed.For some sides to the embodiment disclosing
There is a basic understanding in face, shown below is simple summary.This summarized section is not extensive overview,
It is not the protection domain that will determine key/critical component or describe these embodiments.It is unique
Purpose is to assume some concepts with simple form, in this, as the preamble of following detailed description.
In some optional embodiments, methods described, including：In running, according to operation
Parameter and operation trend are adjusted to the aperture of described electric expansion valve.
In some optional embodiments, methods described, before operation, also include：Determine that electronics is swollen
The initial opening that swollen valve runs.
In some optional embodiments, the described initial opening determining that electric expansion valve runs, including：
The temperature signal of the temperature signal according to chilled water and cooling water determines the first of described electric expansion valve
Beginning aperture.
In some optional embodiments, described operational factor includes：Suction pressure of compressor and compression
Machine suction temperature.
In some optional embodiments, the described temperature signal according to chilled water and cooling water determines electricity
The initial opening of sub- expansion valve, including：
Collection chilled water and the temperature signal of cooling water；
According to the temperature signal of described chilled water and cooling water, initial opening corresponding relation is inquired about institute
State the initial opening of electric expansion valve；
Wherein, described initial opening corresponding relation is included in different chilled waters and cooling water temperature model
Enclose the initial opening of corresponding electric expansion valve.
In some optional embodiments, according to operational factor, the aperture of described electric expansion valve is carried out
Adjust, including：
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to described n group suction pressure of compressor, compressor air suction temperature and degree of superheat desired value T, according to
Secondary calculate n suction superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；Wherein, described
T is default；
According to n-th suction superheat deviation delta T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency,
Determine the aperture of described electric expansion valve.
In some optional embodiments, according to Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency,
Determine the aperture of described electric expansion valve, including：
If Δ T'n=0, then the aperture of electric expansion valve remain unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then electric expansion valve
Aperture remains unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation or increasing trend, then electronics
Expansion valve closes valve, and determines its aperture according to Δ T'n；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in increasing trend, then electric expansion valve
Aperture remain unchanged；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation, decline trend, then electronics
Expansion valve valve opening, and according to Δ T'nDetermine its aperture.
In some optional embodiments, in running, according to adjusting, the valve cycle is swollen to described electronics
The aperture of swollen valve is adjusted；Wherein, the described tune valve cycle is default, artificial setting, or root
Determine according to the feature of current machine set system.
In some optional embodiments, the described tune valve cycle is determined according to the feature of current machine set system,
Including：
According to the operational mode of current machine set system, determine the described tune valve cycle.
In some optional embodiments, methods described is applied to the water chiller of air-conditioning.
Using above-described embodiment, can reach following effect：
Unit can run under different operating modes, determines that electric expansion valve is located at rational tune valve initial
Aperture；
In running, it is to avoid electric expansion valve toning, reduce vibration, make electric expansion valve faster with
System matches, realize mass of system flow optimum it is ensured that the optimum performance of machine set compressor, are can be optimal.
For above-mentioned and related purpose, one or more embodiments include will be explained in simultaneously below
The feature being particularly pointed out in the claims.Description below and accompanying drawing detailed description are some exemplary
Aspect, and its instruction be only each embodiment the utilizable various modes of principle in one
A little modes.Other benefits and novel features will be considered in conjunction with the accompanying with detailed description below and
Become obvious, the disclosed embodiments are intended to including all these aspects and theirs is equivalent.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the one of the application
Part, the schematic description and description of the present invention is used for explaining the present invention, does not constitute to this
Bright improper restriction.In the accompanying drawings：
Fig. 1 shows a kind of stream of the control method for electronic expansion valve of water chiller of the embodiment of the present invention
Journey schematic diagram；
Fig. 2 shows a kind of control method for electronic expansion valve of water chiller of the embodiment of the present invention
Idiographic flow schematic diagram.
Specific embodiment
The following description and drawings fully illustrate specific embodiments of the present invention, so that the skill of this area
Art personnel can put into practice them.Other embodiments can include structure, logic, electric,
Process and other changes.Embodiment only represents possible change.Unless explicitly requested, otherwise
Individually components and functionality is optional, and the order operating can change.Some embodiments
Part and feature can be included in or replace part and the feature of other embodiments.The reality of the present invention
The scope applying scheme includes the gamut of claims, and all of claims obtain
Equivalent.Herein, these embodiments of the present invention can individually or generally be used term
" invention " representing, it is convenient that this is used for the purpose of, and if in fact disclosing the invention more than,
The scope being not meant to automatically limit this application is any single invention or inventive concept.
In some illustrative embodiments, a kind of control method for electronic expansion valve of water chiller, bag
Include：In running, according to operational factor and operation trend, the aperture of described electric expansion valve is entered
Row is adjusted；
In the prior art, the electric expansion valve of general air-conditioning water chiller is only to lean on suction superheat poor
To control opening or closing of electric expansion valve, to control electronics swollen using so single parameter index
The folding of swollen valve can make air-conditioner set easily occur in actual use suction superheat too high,
Too low vibration causes electric expansion valve and system followability difference it is impossible to effectively realize degree of superheat control, shadow
Ring unit overall performance.In the method, by operational factor it will be seen that the current fortune of air-conditioner set
Row state, and operation trend has reacted compressor dynamic ruuning situation within nearly a period of time, foundation
Operational factor in air-conditioner set running and operation trend, can more effectively, more accurately to electricity
The aperture of sub- expansion valve is adjusted；
In some illustrative embodiments, before operation, methods described also includes：Determine that electronics is swollen
The initial opening that swollen valve runs；
Fig. 1 is that in the embodiment of the present invention, a kind of flow process of the control method for electronic expansion valve of water chiller is shown
It is intended to；As shown in figure 1, methods described includes：
S101, the temperature signal according to chilled water and the temperature signal of cooling water, determine that described electronics is swollen
The initial opening of swollen valve；
S102, in running, according to operational factor and operation trend to described electric expansion valve
Aperture is adjusted；
In some illustrative embodiments, the described temperature signal according to chilled water and cooling water determines
The initial opening of electric expansion valve, including：
Collection chilled water and the temperature signal of cooling water；
According to the temperature signal of described chilled water and cooling water, initial opening corresponding relation is inquired about institute
State the initial opening of electric expansion valve；
Wherein, described initial opening corresponding relation is included in different chilled waters and cooling water temperature model
Enclose the initial opening of corresponding electric expansion valve；
In some illustrative embodiments, described operational factor includes：Suction pressure of compressor and pressure
Contracting machine suction temperature；
Further, according to operational factor, the aperture of described electric expansion valve is adjusted, including：
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to described n group suction pressure of compressor, compressor air suction temperature and degree of superheat desired value T, according to
Secondary calculate N number of suction superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；Wherein, described
T is default；
According to n-th suction superheat deviation delta T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency,
Determine the aperture of described electric expansion valve；
Further, according to Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency, determine described
The aperture of electric expansion valve, including：
If Δ T'n=0, then the aperture of electric expansion valve remain unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then electric expansion valve
Aperture remains unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation or increasing trend, then electronics
Expansion valve closes valve, and according to Δ T'nDetermine its aperture；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in increasing trend, then electric expansion valve
Aperture remain unchanged；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation, decline trend, then electronics
Expansion valve valve opening, and according to Δ T'nDetermine its aperture；
In some illustrative embodiments, in running, according to the tune valve cycle to described electronics
The aperture of expansion valve is adjusted；Wherein, the described tune valve cycle is default, artificial setting, or
Feature according to current machine set system determines；For example：When dispatching from the factory, the expansion valve of unit is adjusted valve week
Phase is set to 20min, then the unit after unit brings into operation, then every 20min execute one time above-mentioned
The operation aperture of described electric expansion valve being adjusted according to operational factor and operation trend；Or,
Before system commencement of commercial operation, system can obtain according to the setting of user and adjust the valve cycle；Or, system according to
The feature (the current operational mode of such as machine set system (refrigeration, quiet dormancy) of current machine set system, or
Current wind speed of person's air-conditioning etc.) determine the described tune valve cycle.
Fig. 2 is that in the embodiment of the present invention, a kind of flow process of the control method for electronic expansion valve of water chiller is shown
It is intended to；As shown in Fig. 2 methods described includes：
S201, collection chilled water temperature signal and cooling water return water temperature signal；
S202, determines electric expansion valve initial opening；
S203, collection n group pressure of inspiration(Pi), suction temperature signal；
S204, calculates Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency；
S205, according to Δ T'nWith Δ T'1, Δ T'2..., Δ T'nVariation tendency determine how regulation electricity
Sub- expansion valve；Wherein, this step specifically includes：
S2051, if Δ T'n=0, then the aperture of electric expansion valve remain unchanged；
S2052, if Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then electronics is swollen
The aperture of swollen valve remains unchanged；
S2053, if Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation or increasing trend,
Then electric expansion valve closes valve, and according to Δ T'nDetermine its aperture；
S2054, if Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in increasing trend, then electronics
The aperture of expansion valve remains unchanged；
S2055, if Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation, decline trend,
Then electric expansion valve valve opening, and according to Δ T'nDetermine its aperture.
Below, in conjunction with specific embodiments the method described in Fig. 1 and 2 is described in detail：
In this embodiment, suction superheat desired value T is 2K；
After water chiller starts, detection cooling water return water temperature Tcwi is 25 DEG C, chilled water return water temperature
Tewi be 18 DEG C, then by the initial opening of 1 determination electric expansion valve of tabling look-up be K1；
The table 1. electric expansion valve initial opening table of comparisons
5 groups of parameters are detected within a tune valve cycle after water chiller startup optimization；The air-breathing detecting
Pressure is respectively 0.510MPa, 0.509MPa, 0.508MPa, 0.507MPa, 0.507MPa, inhales
Temperature degree is respectively 9.68 DEG C, 9.52 DEG C, 9.37 DEG C, 9.22 DEG C, 9.12 DEG C；
According to the current suction superheat of the pressure of inspiration(Pi) detecting, temperature computation and suction superheat deviation
Δ T', detailed process is：
First saturation temperature (6.32 DEG C) is inquired according to pressure of inspiration(Pi) (as 0.507MPa)；
Secondly, calculate T=9.12-6.32=2.8 DEG C of Δ；
Calculate 0 DEG C of Δ T'=(9.12-6.32) -2=0.8 DEG C of ＞；
Same as mentioned above, calculate Δ T' change according to 5 groups of parameters of detection in the tune valve cycle and become
Gesture is：1.2nd, 1.1,1.0,0.9 and 0.8；
Decline trend is judged as by above-mentioned Δ T' variation tendency；
According to 0 DEG C of Δ T'＞, and decline trend, then electric expansion valve maintains aperture.
Using above-described embodiment, can reach following effect：
Unit can run under different operating modes, determines that electric expansion valve is located at rational tune valve initial
Aperture；
In running, it is to avoid electric expansion valve toning, reduce vibration, make electric expansion valve faster with
System matches, realize mass of system flow optimum it is ensured that the optimum performance of machine set compressor, are can be optimal.
It should also be appreciated by one skilled in the art that combining the various illustrative of the embodiments herein description
Box, module, circuit and algorithm steps all can be implemented as electronic hardware, computer software or its
Combination.In order to clearly demonstrate the interchangeability between hardware and software, above to various illustrative
Part, frame, module, circuit and step are all generally described around its function.As for this
Function is implemented as hardware and is also implemented as software, is applied depending on specific application with to whole system
Plus design constraint.Those skilled in the art can be directed to each application-specific, with flexible side
Formula realizes described function, but, this realize decision-making and should not be construed as the protection deviating from the disclosure
Scope.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included in the present invention
Protection domain within.
Claims (9)
1. a kind of control method for electronic expansion valve of water chiller is it is characterised in that include：
In running, according to operational factor and operation trend, the aperture of described electric expansion valve is entered
Row is adjusted.
2. the method for claim 1 is it is characterised in that before operation, also include：Really
Determine the initial opening of electric expansion valve operation.
3. method as claimed in claim 2 is it is characterised in that described determination electric expansion valve is transported
The initial opening of row, including：
The temperature signal of the temperature signal according to chilled water and cooling water determines the first of described electric expansion valve
Beginning aperture.
4. the method for claim 1 is it is characterised in that described operational factor includes：Pressure
Contracting machine pressure of inspiration(Pi) and compressor air suction temperature.
5. method as claimed in claim 3 it is characterised in that described according to chilled water with cooling
The temperature signal of water determines the initial opening of electric expansion valve, including：
Collection chilled water and the temperature signal of cooling water；
According to the temperature signal of described chilled water and cooling water, initial opening corresponding relation is inquired about institute
State the initial opening of electric expansion valve；
Wherein, described initial opening corresponding relation is included in different chilled waters and cooling water temperature model
Enclose the initial opening of corresponding electric expansion valve.
6. method as claimed in claim 4 is it is characterised in that foundation operational factor is to described electricity
The aperture of sub- expansion valve is adjusted, including：
Continuous detection n group suction pressure of compressor and compressor air suction temperature；
According to described n group suction pressure of compressor, compressor air suction temperature and degree of superheat desired value T, according to
Secondary calculate n suction superheat deviation delta T', i.e. Δ T'1, Δ T'2..., Δ T'n；Wherein, described
T is default；
According to n-th suction superheat deviation delta T'n and Δ T'1, Δ T'2..., Δ T'nVariation tendency,
Determine the aperture of described electric expansion valve.
7. method as claimed in claim 6 is it is characterised in that according to Δ T'nWith Δ T'1, Δ T'2...,
ΔT'nVariation tendency, determine the aperture of described electric expansion valve, including：
If Δ T'n=0, then the aperture of electric expansion valve remain unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nTaper off trend, then electric expansion valve
Aperture remains unchanged；
If Δ T'n＞ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation or increasing trend, then electronics
Expansion valve closes valve, and determines its aperture according to Δ T'n；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in increasing trend, then electric expansion valve
Aperture remain unchanged；
If Δ T'n＜ 0, and Δ T'1, Δ T'2..., Δ T'nDuring in fluctuation, decline trend, then electronics
Expansion valve valve opening, and according to Δ T'nDetermine its aperture.
8. the method as any one of claim 1-7 is it is characterised in that in running
In, according to the tune valve cycle, the aperture of described electric expansion valve is adjusted；Wherein, described tune valve week
Phase is default, artificial setting, or determined according to the feature of current machine set system.
9. method as claimed in claim 8 is it is characterised in that spy according to current machine set system
Point determines the described tune valve cycle, including：
According to the operational mode of current machine set system, determine the described tune valve cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444441.5A CN106403425B (en) | 2015-07-27 | 2015-07-27 | A kind of control method for electronic expansion valve of water chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444441.5A CN106403425B (en) | 2015-07-27 | 2015-07-27 | A kind of control method for electronic expansion valve of water chiller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106403425A true CN106403425A (en) | 2017-02-15 |
| CN106403425B CN106403425B (en) | 2019-04-12 |
Family
ID=58008574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510444441.5A Active CN106403425B (en) | 2015-07-27 | 2015-07-27 | A kind of control method for electronic expansion valve of water chiller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106403425B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107933872A (en) * | 2017-11-07 | 2018-04-20 | 珠海格力电器股份有限公司 | The control method for electronic expansion valve and device of warship marine cooling-water unit |
| CN108344213A (en) * | 2018-02-08 | 2018-07-31 | 广东高而美制冷设备有限公司 | A kind of tune valve method of the best aperture of electric expansion valve and adjust valve gear |
| CN108458520A (en) * | 2017-02-21 | 2018-08-28 | 青岛海尔空调电子有限公司 | Handpiece Water Chilling Units control method for electronic expansion valve |
| CN110030707A (en) * | 2019-04-04 | 2019-07-19 | 广东美的暖通设备有限公司 | Air-conditioning system adjusting method, air conditioner and computer readable storage medium |
| CN107655164B (en) * | 2017-09-07 | 2020-08-04 | 三菱重工海尔(青岛)空调机有限公司 | Method for controlling opening degree of electronic expansion valve of indoor unit of air conditioner of water system |
| CN113883744A (en) * | 2021-09-28 | 2022-01-04 | 青岛海尔中央空调有限公司 | Control method for water chilling unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093792A (en) * | 1993-01-27 | 1994-10-19 | 株式会社东芝 | Freezing cycle device |
| CN1705852A (en) * | 2003-07-01 | 2005-12-07 | 松下电器产业株式会社 | Expansion valve control method for multiple type airconditioner |
| JP2007255845A (en) * | 2006-03-24 | 2007-10-04 | Sanyo Electric Co Ltd | Refrigerating cycle device |
| CN101276226A (en) * | 2007-03-26 | 2008-10-01 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve |
| CN102384618A (en) * | 2011-11-11 | 2012-03-21 | 天津商业大学 | Method for controlling opening of electronic expansion valve in heat pump water heater system |
| CN102954555A (en) * | 2011-08-22 | 2013-03-06 | 浙江三花股份有限公司 | Method for controlling opening of expansion valve |
| CN103968629A (en) * | 2013-02-04 | 2014-08-06 | 珠海格力电器股份有限公司 | Falling-film type water chilling unit and adjusting method thereof |
-
2015
- 2015-07-27 CN CN201510444441.5A patent/CN106403425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093792A (en) * | 1993-01-27 | 1994-10-19 | 株式会社东芝 | Freezing cycle device |
| CN1705852A (en) * | 2003-07-01 | 2005-12-07 | 松下电器产业株式会社 | Expansion valve control method for multiple type airconditioner |
| JP2007255845A (en) * | 2006-03-24 | 2007-10-04 | Sanyo Electric Co Ltd | Refrigerating cycle device |
| CN101276226A (en) * | 2007-03-26 | 2008-10-01 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve |
| CN102954555A (en) * | 2011-08-22 | 2013-03-06 | 浙江三花股份有限公司 | Method for controlling opening of expansion valve |
| CN102384618A (en) * | 2011-11-11 | 2012-03-21 | 天津商业大学 | Method for controlling opening of electronic expansion valve in heat pump water heater system |
| CN103968629A (en) * | 2013-02-04 | 2014-08-06 | 珠海格力电器股份有限公司 | Falling-film type water chilling unit and adjusting method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458520A (en) * | 2017-02-21 | 2018-08-28 | 青岛海尔空调电子有限公司 | Handpiece Water Chilling Units control method for electronic expansion valve |
| CN108458520B (en) * | 2017-02-21 | 2020-07-07 | 青岛海尔空调电子有限公司 | Control method for electronic expansion valve of water chilling unit |
| CN107655164B (en) * | 2017-09-07 | 2020-08-04 | 三菱重工海尔(青岛)空调机有限公司 | Method for controlling opening degree of electronic expansion valve of indoor unit of air conditioner of water system |
| CN107933872A (en) * | 2017-11-07 | 2018-04-20 | 珠海格力电器股份有限公司 | The control method for electronic expansion valve and device of warship marine cooling-water unit |
| CN107933872B (en) * | 2017-11-07 | 2020-04-24 | 珠海格力电器股份有限公司 | Electronic expansion valve control method and device for ship water chilling unit |
| CN108344213A (en) * | 2018-02-08 | 2018-07-31 | 广东高而美制冷设备有限公司 | A kind of tune valve method of the best aperture of electric expansion valve and adjust valve gear |
| CN108344213B (en) * | 2018-02-08 | 2020-10-30 | 广东高而美制冷设备有限公司 | Valve adjusting method and valve adjusting device for optimal opening degree of electronic expansion valve |
| CN110030707A (en) * | 2019-04-04 | 2019-07-19 | 广东美的暖通设备有限公司 | Air-conditioning system adjusting method, air conditioner and computer readable storage medium |
| CN113883744A (en) * | 2021-09-28 | 2022-01-04 | 青岛海尔中央空调有限公司 | Control method for water chilling unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106403425B (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106403425A (en) | Water chilling unit electronic expansion valve control method | |
| CN106403140A (en) | Method for controlling electronic expansion valve of air cooling unit | |
| CN104236018B (en) | Air conditioner control method and air conditioner control device | |
| US8955334B2 (en) | Systems and methods for controlling the startup of a gas turbine | |
| CN106016596B (en) | The control method and air conditioner of air conditioner electronic expansion valve | |
| CN104596173B (en) | Control method and control device for electronic expansion valve | |
| CN106556112B (en) | Compressor frequency adjusting method and device | |
| US8707709B2 (en) | Systems and methods for controlling compressor extraction cooling | |
| CN103185387B (en) | Air-conditioner and leaving air temp control method thereof | |
| CN108375175A (en) | Air conditioner system control method and device | |
| CN106369879B (en) | A kind of multi-line system method for controlling oil return and device | |
| CN106765890B (en) | Method for controlling air conditioner and air conditioner | |
| CN103185016A (en) | Method and device for adjusting rotating speed of inner fan of air conditioner | |
| CN107606830A (en) | A kind of electric expansion valve adjusting method | |
| CN104841055B (en) | Control method, the device and system of lung ventilator PEEP valves | |
| CN105241026B (en) | A kind of vibration control method and equipment | |
| CN104110774B (en) | A kind of operation of air conditioner control method and device | |
| CN108375166A (en) | The method, apparatus and computer storage media of the anti-condensation control of air-conditioning | |
| CN106958927A (en) | The method and device of airconditioning control | |
| CN105276913B (en) | Wind cooling refrigerator rotation speed of fan method of adjustment and wind cooling refrigerator | |
| US20040187473A1 (en) | Acceleration control in multi spool gas turbine engine | |
| CN104713201B (en) | The control method of convertible frequency air-conditioner unit running frequency | |
| US9670847B2 (en) | Two-shaft gas turbine | |
| KR101946951B1 (en) | System and method for controlling an air conditioning system for a motor vehicle | |
| CN108413554A (en) | The method, apparatus and computer storage media of the anti-condensation control of air-conditioning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jie Inventor after: Zhao Lei Inventor before: Dong Junjie Inventor before: Zhao Lei Inventor before: Zhang Jie |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |