CN106765927B - The control method of air-conditioning expansion valve - Google Patents
The control method of air-conditioning expansion valve Download PDFInfo
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- CN106765927B CN106765927B CN201611142861.9A CN201611142861A CN106765927B CN 106765927 B CN106765927 B CN 106765927B CN 201611142861 A CN201611142861 A CN 201611142861A CN 106765927 B CN106765927 B CN 106765927B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control methods of air-conditioning expansion valve, which comprises air conditioner refrigerating operation obtains current indoor environment temperature, current indoor ambient humidity, current compressor suction temperature, current indoor coil temperature and the current goal degree of superheat；If the current indoor environment temperature and the current indoor ambient humidity meet the temperature and humidity conditions of setting, it executes to limit and adjusts valve process: if the current indoor coil temperature works as shroud temperature threshold value no more than described, the current return-air degree of superheat being obtained according to the current indoor coil temperature；If the current indoor coil temperature works as shroud temperature threshold value described in being greater than, according to described when shroud temperature threshold value obtains the current return-air degree of superheat；According to the aperture of the current return-air degree of superheat adjustment expansion valve.It is adjusted with the application of the invention, realizing expansion valve with the adaptivity that temperature and humidity changes, the comfort that the runnability of system and temperature are adjusted when improving degree of superheat tune valve.
Description
Technical field
The invention belongs to air-conditioning technique fields, specifically, being to be related to the control method of air-conditioning expansion valve.
Background technique
The running frequency of frequency-conversion air-conditioning system compressor can automatically adjust according to the variation of room temperature and set temperature,
To achieve the effect that minimum temperature fluctuation, best comfort and maximum energy-saving.When compressor operating frequency adjustment, air-conditioning system
Circulation loop cold medium flux also change therewith, at this moment just need to be adjusted in synchronism expansion valve opening, realize the control of best efficiency.
Currently, frequency-conversion air-conditioning system mainly uses the aperture of the method variable expansion valve of the degree of superheat, and then adjust air-conditioning system
Refrigerant circulation in system.And the degree of superheat is mainly by the return-air mistake determined by compressor return air temperature and indoor coil pipe
Temperature is calculated to obtain with target superheat degree.
When air-conditioning is run under different operating conditions, compressor return air temperature and indoor coil pipe can all be affected.Especially
It is under hot and humid environment, indoor evaporating pressure is big, and evaporating temperature is higher, will affect the calculated value of the degree of superheat, and then influence
The performance of the air-conditioning system of expansion valve opening adjusting is carried out by the degree of superheat.
Summary of the invention
The object of the present invention is to provide a kind of control methods of air-conditioning expansion valve, by the way that threshold is arranged to indoor coil pipe
Value realizes the adaptivity that expansion valve regulation changes with temperature and humidity, the runnability and temperature of system when improving degree of superheat tune valve
The comfort of adjusting.
For achieving the above object, the present invention, which adopts the following technical solutions, is achieved:
A kind of control method of air-conditioning expansion valve, which comprises
Air conditioner refrigerating operation, obtains current indoor environment temperature, current indoor ambient humidity, current compressor return air temperature
Degree, current indoor coil temperature obtain the current goal degree of superheat according to compressor operating frequency；
If the current indoor environment temperature and the current indoor ambient humidity meet the temperature and humidity conditions of setting, execute
Following restriction tune valve processes:
The current indoor coil temperature is compared with shroud temperature threshold value is worked as；The shroud temperature threshold value of working as is according at least to institute
Current indoor environment temperature, the current indoor ambient humidity and the current compressor suction temperature is stated to determine；
If the current indoor coil temperature works as shroud temperature threshold value no more than described, according to the current compressor return air temperature
Degree and the current indoor coil temperature obtain the current return-air degree of superheat；If the current indoor coil temperature is greater than described current
Disk temperature threshold value obtains the current return-air degree of superheat according to the current compressor suction temperature and the shroud temperature threshold value of working as；
According to the aperture of the current return-air degree of superheat adjustment expansion valve.
Method as described above, if the current indoor environment temperature and the current indoor ambient humidity be unsatisfactory for it is described
Temperature and humidity conditions execute following conventional tune valve processes:
The current return-air degree of superheat is obtained according to the current compressor suction temperature and the current indoor coil temperature；
According to the aperture of the current return-air degree of superheat adjustment expansion valve.
Method as described above, the aperture according to the current return-air degree of superheat adjustment expansion valve, specifically includes:
Current return-air degree of superheat deviation is obtained according to the current return-air degree of superheat and the current goal degree of superheat, according to
The return-air degree of superheat deviation of the current return-air degree of superheat deviation and the previous moment at current time obtains the current return-air degree of superheat
Change of error amount；
Expansion valve is adjusted according to the current return-air degree of superheat deviation and the current return-air degree of superheat change of error amount
Aperture.
Method as described above, the temperature and humidity conditions include:
The current indoor ambient humidity is greater than the first setting humidity；
Alternatively, the current indoor ambient humidity no more than it is described first setting humidity and not less than second setting humidity,
And the current indoor environment temperature is not less than set temperature.
Preferably, described first humidity is set as 90%, described second sets humidity as 50%, and the set temperature is 20
℃。
Method as described above, it is described when shroud temperature threshold value is according at least to the current indoor environment temperature, described current
Indoor environment humidity and current compressor suction temperature determination specifically include:
According to known temperature range judge the current indoor environment temperature belonging to temperature range, according to known wet
Spend humidity section belonging to current indoor ambient humidity described in interval judgement；
According to the corresponding relationship of known disk temperature threshold value and the known temperature range and the known humidity section
It obtains and humidity section belonging to temperature range belonging to the current indoor environment temperature and the current indoor ambient humidity
Corresponding disk temperature threshold value, as given disc temperature threshold value；
It is obtained and the current compressor according to the corresponding relationship of known given disc temperature threshold value and compressor return air temperature
The corresponding given disc temperature threshold value of suction temperature works as shroud temperature threshold value as described.
Method as described above, the corresponding relationship of the given disc temperature threshold value and compressor return air temperature, comprising:
Given disc temperature threshold value=compressor return air temperature-deviation；
The deviation is positive number.
Preferably, the deviation is the positive number no more than 2.
Compared with prior art, the advantages and positive effects of the present invention are: in air conditioner refrigerating operational process, ring indoors
When border temperature and indoor environment humidity meet the temperature and humidity conditions of setting, it will execute and the restriction of disk temperature threshold value is made to indoor coil pipe
Restriction tune valve so that participate in expansion valve opening adjustment operation indoor coil pipe be no more than disk temperature threshold value, in this way, certain
It can be avoided expansion valve in degree and execute the pass valve events of aperture reduction always and cold caused by causing under hot and humid environment
The decline of operation of air conditioner performance caused by matchmaker's internal circulating load is reduced, compressor exhaust temperature is excessively high and temperature adjust comfort decline
Problem realizes and adjusts the adaptivity optimization changed with indoor temperature and humidity to expansion valve opening.
After a specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Detailed description of the invention
Fig. 1 is the flow chart of control method one embodiment based on air-conditioning expansion valve of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to drawings and examples,
Invention is further described in detail.
Referring to Figure 1, which show the flow chart of control method one embodiment based on air-conditioning expansion valve of the present invention.
As shown in Figure 1, the embodiment realizes that the control method of air-conditioning expansion valve includes the following steps the process constituted:
Step 11: air conditioner refrigerating operation obtains current indoor environment temperature, current indoor ambient humidity, current compressor
Suction temperature, current indoor coil temperature obtain the current goal degree of superheat according to compressor operating frequency.
Current indoor environment temperature, current indoor ambient humidity, current compressor suction temperature and current indoor coil pipe temperature
Degree can be realized by installing temperature detection part in corresponding check bit.For example, indoors or air conditioning chamber by setting
The temperature sensor of interior machine air inlet detects current indoor environment temperature；By be arranged indoors or air conditioner indoor unit air inlet
Humidity sensor at mouthful detects current indoor ambient humidity；By the way that the temperature sensor detection at compressor return air mouth is arranged in
Current suction temperature；Coil temperature sensor by the way that heat exchanger indoors is arranged detects current indoor coil temperature.
And the current goal degree of superheat is value relevant to air conditioning operating mode and compressor operating frequency, known, is being made
Under cold mode, it can be got by way of tabling look-up and currently be run with compressor operating frequency, specifically with compressor
The one-to-one current goal degree of superheat of frequency.Moreover, for convenience of calculation, in general, a running frequency range is corresponding with
One target superheat degree.For example, the compressor operating frequency less than 20Hz corresponds to a target superheat degree, the pressure greater than 90Hz
Contracting machine running frequency corresponds to a target superheat degree, in the frequency between 20Hz to 90Hz, the frequency range of every 10Hz it is corresponding
A target superheat degree.
Step 12: when current indoor environment temperature and current indoor ambient humidity meet the temperature and humidity conditions of setting, holding
Row, which limits, adjusts valve process.
Specifically, the temperature of the current indoor environment temperature and current indoor ambient humidity and setting that step 11 are got
Temperature condition and damp condition in damp condition are made comparisons, and determine whether to meet the temperature and humidity conditions of setting.Wherein, it sets
Temperature and humidity conditions as whether execute limit adjust valve process Rule of judgment, for characterize hot and humid environment situation condition.
If meeting the temperature and humidity conditions of the setting, shows that indoor environment temperature at this time or/and indoor environment humidity are higher, then need to hold
Row, which limits, adjusts valve process.It limits and adjusts valve process specifically:
Current indoor coil temperature is compared with shroud temperature threshold value is worked as.Wherein, when shroud temperature threshold value is according at least to current
Indoor environment temperature, current indoor ambient humidity and current compressor suction temperature determine.It is specific to determine method referring to subsequent
Detailed description.
If current indoor coil temperature, which is not more than, works as shroud temperature threshold value, according to current compressor suction temperature and work as cup
Inner coil pipe temperature obtains the current return-air degree of superheat, specifically the current return-air degree of superheat=current compressor suction temperature-when
Preceding indoor coil pipe；And if current indoor coil temperature is greater than and works as shroud temperature threshold value, according to current compressor return air temperature
It spends and when shroud temperature threshold value obtains the current return-air degree of superheat, specifically, the current return-air degree of superheat=current compressor return air temperature
Du-is when shroud temperature threshold value.
Then, the aperture of expansion valve is adjusted according to the current return-air degree of superheat.
Using the above method, in air conditioner refrigerating operational process, environment temperature and indoor environment humidity satisfaction are set indoors
When fixed temperature and humidity conditions, the restriction tune valve that the restriction of disk temperature threshold value is made to indoor coil pipe will be executed and controlled, so that participating in swollen
The indoor coil pipe of swollen valve opening adjustment operation is no more than disk temperature threshold value.By return-air degree of superheat tune valve principle it is found that indoors
Practical indoor coil pipe is replaced to participate in return-air degree of superheat tune using lesser disk temperature threshold value when coil temperature is greater than disk temperature threshold value
Valve will increase return-air degree of superheat deviation and return-air degree of superheat change of error amount.In this way, can be avoided to a certain extent swollen
Swollen valve executes always the pass valve events of aperture reduction and causes refrigerant circulation caused by under hot and humid environment to reduce, compression
The decline of operation of air conditioner performance caused by machine excessive discharge temperature and temperature adjust the problem of comfort decline, realize to expansion
Valve opening optimizes and revises control with the adaptivity that indoor temperature and humidity changes.
If step 12 judges that current indoor environment temperature and current indoor ambient humidity are unsatisfactory for temperature and humidity conditions, hold
Row is conventional to adjust valve process.It is conventional that valve process is adjusted to refer to the tune valve control process for not considering that indoor coil pipe makees threshold value restriction.Tool
It is conventional to adjust valve process for body are as follows: current return-air mistake is obtained according to current compressor suction temperature and current indoor coil temperature
Temperature；And the aperture of expansion valve is adjusted according to the current return-air degree of superheat.
During valve process and conventional tune valve are adjusted in restriction above-mentioned, opening for expansion valve is adjusted according to the current return-air degree of superheat
Degree, specifically includes:
Current return-air degree of superheat deviation is obtained according to the current return-air degree of superheat and the current goal degree of superheat.Specific formula for calculation
Are as follows: the current return-air degree of superheat deviation=current return-air degree of superheat-current goal degree of superheat.
Further according to the return-air degree of superheat deviation of current return-air degree of superheat deviation and the previous moment at current time, according to following
Formula calculates current return-air degree of superheat change of error amount:
Current return-air degree of superheat change of error amount=current return-air degree of superheat change of error amount-previous moment return-air degree of superheat
Deviation.
Finally, adjusting opening for expansion valve according to current return-air degree of superheat deviation and current return-air degree of superheat change of error amount
Degree.
It should be noted that after air-conditioning is switched on refrigerating operaton for a period of time, such as operation 30min and then execution
It limits and adjusts valve process, to ensure air-conditioning system stable operation.
In the control of expansion valve, temperature and humidity conditions and disk temperature threshold value how are determined, accuracy for control and comfortable
Property is more important.Lower mask body is described in detail the setting of temperature and humidity conditions and disk temperature threshold value with selected.
Temperature and humidity conditions as whether execute limit adjust valve process Rule of judgment, comprising:
Current indoor ambient humidity is greater than the first setting humidity；
Alternatively, the current indoor ambient humidity and no more than the first setting humidity and not less than the second setting humidity work as
Preceding indoor environment temperature is not less than set temperature.
Preferably, first humidity is set as 90%, second sets humidity as 50%, and set temperature is 20 DEG C.Certainly, the reality
The humidity proposed in example is applied, each means the relative humidity of air.
By taking preferred settings is worth as an example, if current indoor ambient humidity is greater than 90%, belong to high humidity environment.This situation
Under, regardless of the height of current indoor temperature, it is required to that indoor coil pipe is made to limit to adjust valve control process.And if working as cup
For interior ambient humidity between 50%-90%, humidity is slightly lower, or close to comfort humidity.So, if execute to limit and adjust valve control
It makes, needs to make to judge in conjunction with indoor environment temperature, therefore, temperature and humidity conditions include that humidity requires also comprising temperature requirement.
If under the humidity of 50%-90%, if current indoor environment temperature is more than or equal to 20 DEG C, it is also desirable to make to indoor coil pipe
It limits and adjusts valve control process.If current indoor environment temperature is not construed as limiting tune valve less than 20 DEG C, and directly execute conventional tune valve
Control obtains the return-air degree of superheat according to the current indoor coil temperature of actual measurement.If current indoor ambient humidity is less than
50%, air humidity is partially dry, then regardless of current indoor environment temperature is big or small, does not also need to execute to limit and valve is adjusted to control
Journey.
And adjusted in valve control process limiting, as previously mentioned, the height work of current indoor coil temperature is judged and is carried out
What is limited works as shroud temperature threshold value, not changeless value, but changes with the difference of environment, as previously mentioned, working as shroud
Warm threshold value is determined according at least to current indoor environment temperature, current indoor ambient humidity and current compressor suction temperature.
As a kind of preferred embodiment, when shroud temperature threshold value is according at least to current indoor environment temperature, current indoor environment
Humidity and current compressor suction temperature determine, specifically include:
Firstly, according to known temperature range judge current indoor environment temperature belonging to temperature range, according to known
Humidity section belonging to humidity interval judgement current indoor ambient humidity.Temperature range and humidity section be it is pre-stored,
It can be arrived by convenient reading.For example, temperature range and humidity section are according to the setting humidity and setting temperature in temperature and humidity conditions
Degree make it is rough divide, then make further subdivision in the section after rough divide again, thus formed multiple temperature ranges and
Humidity section.Temperature range belonging to current indoor environment temperature is judged according to known multiple temperature ranges；According to known
Humidity space belonging to multiple humidity interval judgement current indoor ambient humidities.
Then, it is obtained according to the corresponding relationship in known disk temperature threshold value and known temperature range and known humidity section
Disk temperature corresponding with humidity section belonging to temperature range belonging to current indoor environment temperature and current indoor ambient humidity
Threshold value, as given disc temperature threshold value.All temperature range sequences arrange, all humidity span order arrangements, right latter two
Section is intersected, and intersection is formed with disk temperature threshold value, the disk temperature threshold value as given disc temperature threshold value, both with humidity section phase
It closes, it is also related to temperature range.
Finally, according to the acquisition of the corresponding relationship of known given disc temperature threshold value and compressor return air temperature and current compressor
The corresponding given disc temperature threshold value of suction temperature, which is used as, works as shroud temperature threshold value.Preferably, given disc temperature threshold value and compressor return air
The corresponding relationship of temperature, comprising: given disc temperature threshold value=compressor return air temperature-deviation.Wherein, deviation is positive number.More preferably
, deviation is the positive number no more than 2.
For example, disk temperature threshold value as shown in table 1 below and known temperature range and known humidity section is corresponding
Relationship, lateral Tr indicate indoor environment temperature, and unit is DEG C, and 20 DEG C and 30 DEG C of two temperature spots form 3 temperature ranges, divide
It Wei not 20 DEG C of temperature range of <, 20-30 DEG C of temperature range and 30 DEG C of > of temperature range.Longitudinal RH indicates indoor environment
Relative humidity, unit %.50% and 90% relative humidity point forms 3 humidity sections, the respectively humidity province of < 50%
Between, the humidity section in the humidity section of 50-90% and > 90%.
Table 1
In conjunction with above-mentioned temperature and humidity conditions, in upper table 1, what A2, A3 and A4 were indicated is given disc temperature threshold value, what A1 was indicated
It is humidity section and temperature range corresponding to current indoor coil temperature namely A1 is to be unsatisfactory for some areas of temperature and humidity conditions
Between, upper table 1 is replaced it with A1 for the consistency of expression.Also, given disc temperature threshold value is corresponding with compressor return air temperature
Relationship are as follows:
- 1 DEG C of temperature of A2=compressor return air；- 1.5 DEG C of temperature of A3=compressor return air；A4=compressor return air temperature -2
℃。
If current indoor environment temperature is 25 DEG C, belong to 20-30 DEG C of temperature range, current indoor ambient humidity is
80%, belong to the humidity section of 50-90%.So, it is found that with humidity province belonging to current indoor environment temperature in Cong Shangbiao 1
Between and current indoor ambient humidity belonging to given disc temperature threshold value corresponding to humidity section be A2.And since A2=compressor returns
- 1 DEG C of temperature degree, then, when shroud temperature threshold value is that current compressor suction temperature subtracts 1 DEG C.It obtains after shroud temperature threshold value,
It can be judged with current indoor coil temperature work, and be determined the need for according to judging result by current indoor coil temperature
It is limited to when shroud temperature threshold value.
The degree of superheat control that the control mode that threshold value limits carries out expansion valve is increased to indoor coil pipe by introducing, it can
Effectively to solve due to excessively adjusting the problems such as valve bring refrigeration effect is deteriorated, system performance is low, promoting air-conditioning products makes
The comfortable sexual experience of user.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although referring to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of control method of air-conditioning expansion valve, which is characterized in that the described method includes:
Air conditioner refrigerating operation, obtain current indoor environment temperature, current indoor ambient humidity, current compressor suction temperature, when
Preceding indoor coil pipe obtains the current goal degree of superheat according to compressor operating frequency；
If the current indoor environment temperature and the current indoor ambient humidity meet the temperature and humidity conditions of setting, execute following
Restriction tune valve process:
The current indoor coil temperature is compared with shroud temperature threshold value is worked as；The shroud temperature threshold value of working as is worked as according at least to described
Preceding indoor environment temperature, the current indoor ambient humidity and the current compressor suction temperature determine；
If the current indoor coil temperature works as shroud temperature threshold value no more than described, according to the current compressor suction temperature and
The current indoor coil temperature obtains the current return-air degree of superheat；If the current indoor coil temperature is greater than described when shroud temperature
Threshold value obtains the current return-air degree of superheat according to the current compressor suction temperature and the shroud temperature threshold value of working as；
According to the aperture of the current return-air degree of superheat adjustment expansion valve；
The temperature and humidity conditions include:
The current indoor ambient humidity is greater than the first setting humidity；
Alternatively, the current indoor ambient humidity is no more than the first setting humidity and not less than the second setting humidity and institute
Current indoor environment temperature is stated not less than set temperature.
2. the method according to claim 1, wherein if the current indoor environment temperature and the current indoor
Ambient humidity is unsatisfactory for the temperature and humidity conditions, executes following conventional tune valve processes:
The current return-air degree of superheat is obtained according to the current compressor suction temperature and the current indoor coil temperature；
According to the aperture of the current return-air degree of superheat adjustment expansion valve.
3. method according to claim 1 or 2, which is characterized in that described swollen according to the current return-air degree of superheat adjustment
The aperture of swollen valve, specifically includes:
Current return-air degree of superheat deviation is obtained according to the current return-air degree of superheat and the current goal degree of superheat, according to described
The return-air degree of superheat deviation of current return-air degree of superheat deviation and the previous moment at current time obtains current return-air degree of superheat deviation
Variable quantity；
According to the aperture of the current return-air degree of superheat deviation and the current return-air degree of superheat change of error amount adjustment expansion valve.
4. second setting is wet the method according to claim 1, wherein described first sets humidity as 90%
Degree is 50%, and the set temperature is 20 DEG C.
5. method according to claim 1 or 2 or 4, which is characterized in that described when shroud temperature threshold value is worked as according at least to described
Preceding indoor environment temperature, the current indoor ambient humidity and current compressor suction temperature determination specifically include:
According to known temperature range judge the current indoor environment temperature belonging to temperature range, according to known humidity province
Between judge humidity section belonging to the current indoor ambient humidity；
It is obtained according to the corresponding relationship in known disk temperature threshold value and the known temperature range and the known humidity section
It is opposite with humidity section belonging to temperature range belonging to the current indoor environment temperature and the current indoor ambient humidity
The disk temperature threshold value answered, as given disc temperature threshold value；
It is obtained and the current compressor return-air according to the corresponding relationship of known given disc temperature threshold value and compressor return air temperature
The corresponding given disc temperature threshold value of temperature works as shroud temperature threshold value as described.
6. according to the method described in claim 5, it is characterized in that, pair of the given disc temperature threshold value and compressor return air temperature
It should be related to, comprising:
Given disc temperature threshold value=compressor return air temperature-deviation；
The deviation is positive number.
7. according to the method described in claim 6, it is characterized in that, the deviation is the positive number no more than 2.
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| CN107178944B (en) * | 2017-07-13 | 2019-12-13 | 上海三菱电机·上菱空调机电器有限公司 | method for preventing exhaust superheat degree of air conditioner from being too small and air conditioner control system |
| CN107436021B (en) * | 2017-09-12 | 2019-12-10 | 广东美的制冷设备有限公司 | air conditioner and humidity control method and device thereof |
| CN108548297B (en) * | 2018-04-28 | 2020-07-21 | 四川虹美智能科技有限公司 | Multi-split air conditioner and method for controlling refrigerants of multi-split air conditioner |
| CN108626778B (en) * | 2018-05-09 | 2021-02-23 | 广东瑞星新能源科技有限公司 | Control method of energy-saving variable-frequency heating heat pump |
| CN108981219A (en) * | 2018-06-11 | 2018-12-11 | 陈燕燕 | A kind of control method of full-time energy-efficient frequency conversion water heating heat pump |
| CN109341021A (en) * | 2018-09-27 | 2019-02-15 | 四川长虹电器股份有限公司 | A kind of air-conditioning built-in system and method carrying out humid control using the degree of superheat |
| CN110030677B (en) * | 2019-04-28 | 2021-01-05 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
| CN111076367B (en) * | 2019-12-05 | 2020-11-24 | 珠海格力电器股份有限公司 | Electronic expansion valve opening control method, computer readable storage medium and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091247A (en) * | 2015-09-07 | 2015-11-25 | Tcl空调器(中山)有限公司 | Dehumidification control method and device for air conditioner |
| CN105135627A (en) * | 2015-09-24 | 2015-12-09 | 广东美的制冷设备有限公司 | Air conditioning system as well as control method and control device thereof |
| CN105605741A (en) * | 2016-01-26 | 2016-05-25 | 广东美的制冷设备有限公司 | Air conditioner dehumidification control method and air conditioner dehumidification control device |
| CN105626924A (en) * | 2014-11-07 | 2016-06-01 | 广东美的制冷设备有限公司 | Openness control method of throttle valve, openness control device of throttle valve and air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101579827B1 (en) * | 2009-01-09 | 2015-12-24 | 삼성전자 주식회사 | Home appliance and controlling method for the same of |
| US10330328B2 (en) * | 2013-07-22 | 2019-06-25 | Trane International Inc. | Temperature control system |
-
2016
- 2016-12-13 CN CN201611142861.9A patent/CN106765927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626924A (en) * | 2014-11-07 | 2016-06-01 | 广东美的制冷设备有限公司 | Openness control method of throttle valve, openness control device of throttle valve and air conditioner |
| CN105091247A (en) * | 2015-09-07 | 2015-11-25 | Tcl空调器(中山)有限公司 | Dehumidification control method and device for air conditioner |
| CN105135627A (en) * | 2015-09-24 | 2015-12-09 | 广东美的制冷设备有限公司 | Air conditioning system as well as control method and control device thereof |
| CN105605741A (en) * | 2016-01-26 | 2016-05-25 | 广东美的制冷设备有限公司 | Air conditioner dehumidification control method and air conditioner dehumidification control device |
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