CN105783193B - initial opening degree control method and device of electronic expansion valve - Google Patents
initial opening degree control method and device of electronic expansion valve Download PDFInfo
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- CN105783193B CN105783193B CN201610230771.9A CN201610230771A CN105783193B CN 105783193 B CN105783193 B CN 105783193B CN 201610230771 A CN201610230771 A CN 201610230771A CN 105783193 B CN105783193 B CN 105783193B
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- initial opening
- aperture
- preset
- expansion valve
- electric expansion
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims description 46
- 238000005057 refrigeration Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 230000006641 stabilisation Effects 0.000 claims description 12
- 238000011105 stabilization Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- 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
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
-
- 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
-
- 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
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an initial opening control method of an electronic expansion valve, which comprises the following steps: after the air conditioner is electrified and operated, the electronic expansion valve is controlled to be opened at a set opening degree first, then reset and then opened; when the electronic expansion valve is opened again and is opened to a preset first opening degree, maintaining the opening degree of the electronic expansion valve as the first opening degree, and calculating the initial opening degree of the electronic expansion valve under the current environment according to the acquired compressor capacity, the compressor running frequency, the environment temperature and the air conditioner power; and controlling the electronic expansion valve to be opened to the initial opening degree. The invention also discloses an initial opening control device of the electronic expansion valve. The invention realizes that a proper initial opening degree is obtained by self-adaptive calculation according to the running environment of the air conditioner after being electrified so as to be close to the optimal opening degree, thereby leading the air conditioner to achieve the best heat exchange effect more quickly.
Description
Technical field
The present invention relates to air-conditioner field more particularly to a kind of initial opening control method and device of electric expansion valve.
Background technique
In the air conditioner control system for supporting electronic expansion valve controls, after starting electric expansion valve and being initialized,
The aperture of electric expansion valve can be arranged in scheduled initial opening.Currently, the initial opening of electric expansion valve is often one
Pre-set fixed value, however, the running environment after air conditioner starts every time is often different, in the operation ring of air conditioner
When the difference of border, the aperture of electric expansion valve needs are adjusted according to the variation of running environment, with the aperture being optimal, from
And air conditioner is made to reach best heat transfer effect, and it is desirable for being adjusted to optimal aperture from pre-set fixed initial opening
A period of time, this will affect the heat transfer effect of air conditioner.It is then desired to propose it is a kind of can be started according to air conditioner after fortune
Row environment adaptively determines a suitable initial opening to approach the scheme of optimal aperture.
Summary of the invention
The present invention provides a kind of initial opening control method and device of electric expansion valve, it is intended to which realization is opened according to air conditioner
Running environment after dynamic, adaptively determines a suitable initial opening to approach optimal aperture.
To achieve the above object, the present invention provides a kind of initial opening control method of electric expansion valve, and the electronics is swollen
The initial opening control method of swollen valve includes:
On air conditioner after electricity operation, control electric expansion valve is first opened with the aperture set, rear reset, is opened again；
When the electric expansion valve is again turned on and is opened to the first preset aperture, the electric expansion valve is maintained
Aperture is first aperture, and according to compressor capacity, compressor operating frequency, environment temperature, the air conditioner function got
Rate calculates the initial opening of the electric expansion valve under the present circumstances；
The electric expansion valve is controlled to open to the initial opening.
Preferably, in a heating mode, the environment temperature includes outdoor environment temperature, the compression that the basis is got
Machine capacity, compressor operating frequency, environment temperature, air conditioner power, calculate the electric expansion valve under the present circumstances just
Beginning aperture includes:
The product for calculating the compressor capacity and the compressor operating frequency, by the product being calculated and preset
First variable obtains simple internal circulating load after being rounded；
Each coefficient and change in the first preset formula are determined according to the air conditioner power and the outdoor environment temperature
The value of amount, and in conjunction with the simple internal circulating load, the outdoor environment temperature and the first preset aperture offset, according to described
First formula, which calculates, stablizes aperture；Wherein, first formula are as follows: stablize aperture=(the first coefficient × simple internal circulating load-the
Two variables) × (the second coefficient × outdoor environment temperature+third variable)+the first aperture offset；
Become in the sum of the stable aperture and the first preset value range that are calculated more than or equal to preset first
When song point, initial opening is calculated according to the second preset formula, otherwise, calculates initial opening according to preset third formula；Its
In, second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/first flow ratio+the
One point of inflection, the third formula are as follows: initial opening=the+the first value range of stabilization aperture, the first flow ratio are heating
Preset flow rate ratio under mode.
Preferably, in cooling mode, the environment temperature includes indoor environment temperature and outdoor environment temperature, and described
According to compressor capacity, compressor operating frequency, environment temperature, the air conditioner power got, calculates the electric expansion valve and exist
Initial opening under current environment includes:
The product for calculating the compressor capacity and the compressor operating frequency, by the product being calculated and preset
First variable obtains simple internal circulating load after being rounded；
Each coefficient and variable in the 4th preset formula are determined according to the air conditioner power and the simple internal circulating load
Value, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment temperature and the second preset aperture
Offset calculates according to the 4th formula and stablizes aperture；Wherein, the 4th formula are as follows: stable aperture=(third coefficient ×
The+the four variable of simple internal circulating load) × (the 4th coefficient × (indoor environment temperature-outdoor environment temperature)+the five variable)+the second
Aperture offset；
Become in the sum of the stable aperture and the second preset value range that are calculated more than or equal to preset second
When song point, initial opening is calculated according to the 5th preset formula, otherwise, calculates initial opening according to the 6th preset formula；Its
In, the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/second flow ratio+the
Two points of inflection, the 6th formula are as follows: initial opening=the+the second value range of stabilization aperture, the second flow ratio are refrigeration
Preset flow rate ratio under mode.
Preferably, the initial opening control method of the electric expansion valve further include:
Obtain initial opening minimum value and initial opening maximum value preset under refrigeration mode or under heating mode；
Judge whether the initial opening being calculated is greater than or equal to the initial opening minimum value and is less than or equal to institute
State initial opening maximum value；
When the initial opening being calculated be less than the initial opening minimum value when, using the initial opening minimum value as
The initial opening；It is when the initial opening being calculated is greater than the initial opening maximum value, the initial opening is maximum
Value is used as the initial opening.
Preferably, the initial opening control method of the electric expansion valve further include:
In a heating mode, when the outdoor environment temperature is less than preset extremely low temperature, most by the initial opening
Small value, which is turned up, arrives the second preset aperture, wherein second aperture is less than the initial opening maximum value.
To achieve the above object, the present invention also provides a kind of initial opening control device of electric expansion valve, the electronics
The initial opening control device of expansion valve includes:
First control module, after electricity operation on air conditioner, control electric expansion valve first opened with the aperture set, after
It resets, open again；When the electric expansion valve is again turned on and is opened to the first preset aperture, the electronic expansion is maintained
The aperture of valve is first aperture；
Computing module, for when the electric expansion valve is again turned on and is opened to the first preset aperture, according to obtaining
Compressor capacity, compressor operating frequency, environment temperature, the air conditioner power got, calculate the electric expansion valve current
Initial opening under environment；
Second control module is opened for controlling the electric expansion valve to the initial opening.
Preferably, in a heating mode, the environment temperature includes outdoor environment temperature, and the computing module includes:
First computing unit will be calculated for calculating the product of the compressor capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after being rounded；
Second computing unit, for determining that preset first is public according to the air conditioner power and the outdoor environment temperature
The value of each coefficient and variable in formula, and opened in conjunction with the simple internal circulating load, the outdoor environment temperature and preset first
Offset is spent, is calculated according to first formula and stablizes aperture；Wherein, first formula are as follows: stablize aperture=(the first coefficient
The-the second variable of × simple internal circulating load) × (the second coefficient × outdoor environment temperature+third variable)+the first aperture offset；
Third computing unit, for being greater than in the sum of the stable aperture that is calculated and the first preset value range or
When equal to the first preset point of inflection, initial opening is calculated according to the second preset formula, otherwise, according to preset third formula
Calculate initial opening；Wherein, second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/
+ the first point of inflection of first flow ratio, the third formula are as follows: initial opening=the+the first value range of stabilization aperture, described first
Flow rate ratio is flow rate ratio preset under heating mode.
Preferably, in cooling mode, the environment temperature includes indoor environment temperature and outdoor environment temperature, the meter
Calculating module includes:
4th computing unit will be calculated for calculating the product of the compressor capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after being rounded；
5th computing unit, for determining the 4th preset formula according to the air conditioner power and the simple internal circulating load
In the value of each coefficient and variable, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment temperature
With the second preset aperture offset, is calculated according to the 4th formula and stablize aperture；Wherein, the 4th formula are as follows: stablize
Aperture=(third coefficient × the+the four variable of simple internal circulating load) × (the 4th coefficient × (indoor environment temperature-outdoor environment temperature
Degree) the+the five variable) the+the second aperture offset；
6th computing unit, for being greater than in the sum of the stable aperture that is calculated and the second preset value range or
When equal to the second preset point of inflection, initial opening is calculated according to the 5th preset formula, otherwise, according to the 6th preset formula
Calculate initial opening；Wherein, the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/
+ the second point of inflection of second flow ratio, the 6th formula are as follows: initial opening=the+the second value range of stabilization aperture, described second
Flow rate ratio is flow rate ratio preset under refrigeration mode.
Preferably, the initial opening control device of the electric expansion valve further includes aperture limitation module, the aperture limit
Molding block includes:
Acquiring unit, for obtaining initial opening minimum value and initial opening preset under refrigeration mode or under heating mode
Maximum value；
Judging unit, for judge the initial opening being calculated whether be greater than or equal to the initial opening minimum value and
Less than or equal to the initial opening maximum value；
Updating unit, for when the initial opening being calculated be less than the initial opening minimum value when, will it is described initially
Aperture minimum value is as the initial opening；When the initial opening being calculated is greater than the initial opening maximum value, by institute
Initial opening maximum value is stated as the initial opening.
Preferably, in a heating mode, the aperture limits module further include:
Adjustment unit, for when the outdoor environment temperature be less than preset extremely low temperature when, most by the initial opening
Small value, which is turned up, arrives the second preset aperture, wherein second aperture is less than the initial opening maximum value.
The initial opening control method and device of electric expansion valve proposed by the present invention, control electric expansion valve first is to set
Fixed aperture is first opened, rear reset, is opened again, when the electric expansion valve is again turned on and is opened to the first preset aperture
When, maintaining the aperture of the electric expansion valve is first aperture, and is run according to the compressor capacity, the compressor that get
Frequency, environment temperature, air conditioner power calculate the initial opening of the electric expansion valve under the present circumstances, control the electricity
Sub- expansion valve is opened to the initial opening, so that the initial opening of air conditioner is no longer a fixed value, but being capable of root
Running environment after powering on according to air conditioner adaptively determines a suitable initial opening, so that the electric expansion valve be made to exist
Aperture can be optimal in short time, air conditioner is made to reach best heat transfer effect.
Detailed description of the invention
Fig. 1 is the flow diagram of the initial opening control method first embodiment of electric expansion valve of the present invention；
Fig. 2 is the refinement that initial opening is calculated in the initial opening control method second embodiment of electric expansion valve of the present invention
Flow diagram；
Fig. 3 is the refinement that initial opening is calculated in the initial opening control method 3rd embodiment of electric expansion valve of the present invention
Flow diagram；
Fig. 4 be in the initial opening control method fourth embodiment of electric expansion valve of the present invention to the size of initial opening into
The refinement flow diagram that row limits；
Fig. 5 is the functional block diagram of the initial opening control device first embodiment of electric expansion valve of the present invention；
Fig. 6 is the refinement function of computing module in the initial opening control device second embodiment of electric expansion valve of the present invention
Module diagram；
Fig. 7 is the refinement function of computing module in the initial opening control device 3rd embodiment of electric expansion valve of the present invention
Module diagram；
Fig. 8 is the refinement that aperture limits module in the initial opening control device fourth embodiment of electric expansion valve of the present invention
The functional block diagram；
Fig. 9 is the refinement that aperture limits module in the 5th embodiment of initial opening control device of electric expansion valve of the present invention
The functional block diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of initial opening control method of electric expansion valve, as shown in Figure 1, showing electronics of the present invention
The flow diagram of the initial opening control method first embodiment of expansion valve, the initial opening controlling party of the electric expansion valve
Method includes:
On S10, air conditioner after electricity operation, control electric expansion valve is first opened with the aperture set, rear reset, is opened again；
Wherein, above-mentioned steps S10 is specifically included:
On air conditioner after electricity operation, controls the electric expansion valve and open to third aperture；When the electric expansion valve is beaten
When reaching the third aperture, controls the electric expansion valve closing and be reset to the 4th aperture；When the electric expansion valve is closed
When resetting to four aperture, controls the electric expansion valve and open to the first aperture.
The aperture of the setting may include one or more opening values, and in the present embodiment, the aperture of the setting includes
The third aperture, the 4th aperture, first aperture, the third aperture, the 4th aperture, first aperture
It is the opening value of three different values, is set according to demand in the default setting of air conditioner by producer, for example, this implementation
In example, the third aperture value is 248, and the 4th aperture value is 520, and the first aperture value is 480, wherein
The maximum opening that the structure of the electric expansion valve can be supported is 520, and setting air conditioner can control the electric expansion valve
The maximum opening of opening is 480.
That is, above-mentioned steps S10 is specifically included:
On air conditioner after electricity operation, controls the electric expansion valve and open to 248 apertures；When the electric expansion valve is opened
When to 248 aperture, controls the electric expansion valve closing and be reset to 520 apertures；When electric expansion valve closing resets to 520
When aperture, controls the electric expansion valve and open to 480 apertures.
S20, when the electric expansion valve is again turned on and is opened to the first preset aperture, maintain the electronic expansion
The aperture of valve is first aperture, and according to compressor capacity, compressor operating frequency, environment temperature, the air-conditioning got
Device power calculates the initial opening of the electric expansion valve under the present circumstances；
When the electric expansion valve is again turned on and is opened to 480 aperture, on the one hand air conditioner maintains the electronics swollen
The aperture of swollen valve is opened in 480 apertures, and on the other hand, air conditioner starts to obtain the compressor capacity, compressor operation
Frequency, the environment temperature, the air conditioner power, and the electric expansion valve is calculated according to the value of these parameters got
Initial opening under the present circumstances.
Wherein, when the current environment refers to that the electric expansion valve is again turned on and is opened to 480 aperture, air conditioner exists
Running environment at this time；The environment temperature includes indoor environment temperature and/or outdoor environment temperature；The compressor capacity is
A pre-set value according to the default setting parameter of compressor；The compressor operating frequency is empty under the present circumstances
The value for the compressor operating frequency for adjusting device to be calculated according to corresponding feedback current；The indoor environment temperature is according to interior
The detected temperature value of the temperature sensor being arranged on machine；The outdoor environment temperature is arranged according on outdoor unit
The detected temperature value of temperature sensor；The air conditioner power is the operation that air conditioner detects under the present circumstances
Performance number.
S30, the control electric expansion valve are opened to the initial opening.
Can when the electric expansion valve is again turned on and is opened to the first preset aperture from preset time period after, or
When obtaining the initial opening, air conditioner controls the electric expansion valve and opens to the initial opening.Wherein, when described preset
Length is a pre-set duration value, such as 1 second, value according to actual needs depending on.Generally, when calculating described initial
Long spent duration is less than the preset time period, is greater than if there is duration spent by the calculating initial duration described pre-
Set duration, then the aperture that the electric expansion valve can be continued to after the preset time period is first aperture, until
When the initial opening is calculated, controls the electric expansion valve and open to the initial opening.
The initial opening control method of electric expansion valve proposed by the present invention, first control electric expansion valve are opened with what is set
Degree is first opened, rear reset, is opened again, when the electric expansion valve is again turned on and is opened to the first preset aperture, is maintained
The aperture of the electric expansion valve is first aperture, and according to compressor capacity, compressor operating frequency, the ring got
Border temperature, air conditioner power calculate the initial opening of the electric expansion valve under the present circumstances, control the electric expansion valve
It opens to the initial opening, so that the initial opening of air conditioner is no longer a fixed value, but can be according to air conditioner
Running environment after powering on adaptively determines a suitable initial opening, to make the electric expansion valve in a short time
Aperture can be optimal, air conditioner is made to reach best heat transfer effect.
Further, propose that the initial opening control method second of electric expansion valve of the present invention is implemented based on first embodiment
Example, in the present embodiment, referring to Fig. 2, in a heating mode, the environment temperature includes outdoor environment temperature, and the basis obtains
Compressor capacity, compressor operating frequency, environment temperature, the air conditioner power got, calculate the electric expansion valve current
Initial opening under environment includes:
S21, the product for calculating the compressor capacity and the compressor operating frequency, by the product being calculated and in advance
The first variable set obtains simple internal circulating load after being rounded；
The value of first variable is one desired value of determination according to many experiments, in the present embodiment, described
The calculation formula of first variable-value 100, the simple internal circulating load may be expressed as:
Simple internal circulating load=(compressor operating frequency × compressor capacity)/100
S22, each coefficient in the first preset formula is determined according to the air conditioner power and the outdoor environment temperature
And the value of variable, and in conjunction with the simple internal circulating load, the outdoor environment temperature and the first preset aperture offset, according to
First formula, which calculates, stablizes aperture；
Wherein, first formula are as follows: stablize aperture=(the first coefficient × the-the second variable of simple internal circulating load) × (second
Coefficient × outdoor environment temperature+third variable) the+the first aperture offset；The first aperture offset is that air conditioner is heating
A pre-set aperture offset, can set value according to actual needs under mode, and in the present embodiment, described first opens
Spending offset value is -12.
The value of each coefficient and variable in first formula is according to the air conditioner power and the outdoor environment
The different situations of temperature are obtained by many experiments, in the present embodiment, can refer to each in determining first formula of table 1
The value of coefficient and variable.
Corresponding first formula at a temperature of the different air conditioner power of table 1 and different outdoor environments
S23, in the stable aperture that is calculated and the sum of the first preset value range more than or equal to preset the
When one point of inflection, initial opening is calculated according to the second preset formula, otherwise, is initially opened according to preset third formula calculating
Degree.
Wherein, second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/first
+ the first point of inflection of flow rate ratio
The third formula are as follows: initial opening=the+the first value range of stabilization aperture, the first flow ratio are heating mould
Preset flow rate ratio under formula.
First value range, first point of inflection, the first flow ratio be air conditioner in a heating mode
Parameter, one fixed value can be set according to the characteristic of the electric expansion valve.In the present embodiment, first model
Enclosing value is 150, and first point of inflection is 180, and the first flow ratio is 5.0.
Thus the initial opening of the electric expansion valve can be calculated, the initial opening is also the electric expansion valve
Optimal aperture under the present circumstances, can make air conditioner reach best heat transfer effect.
The initial opening control method of electric expansion valve proposed by the present invention, when air conditioner is under heating mode, according to
Compressor capacity, compressor operating frequency, outdoor environment temperature, air conditioner power and the preset calculation formula got,
The optimal aperture of the electric expansion valve under the present circumstances can be calculated, calculation method is simple and time-consuming less.
Further, propose that the initial opening control method third of electric expansion valve of the present invention is implemented based on first embodiment
Example, in the present embodiment, referring to Fig. 3, in cooling mode, the environment temperature includes indoor environment temperature and outdoor environment temperature
Degree, compressor capacity that the basis is got, compressor operating frequency, environment temperature, air conditioner power, calculates the electronics
The initial opening of expansion valve under the present circumstances includes:
S24, the product for calculating the compressor capacity and the compressor operating frequency, by the product being calculated and in advance
The first variable set obtains simple internal circulating load after being rounded；
The value of first variable is one desired value of determination according to many experiments, in the present embodiment, described
The calculation formula of first variable-value 100, the simple internal circulating load may be expressed as:
Simple internal circulating load=(compressor operating frequency × compressor capacity)/100
S25, determined in the 4th preset formula according to the air conditioner power and the simple internal circulating load each coefficient and
The value of variable, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment temperature and preset second
Aperture offset calculates according to the 4th formula and stablizes aperture；
Wherein, the 4th formula are as follows: stablize aperture=(third coefficient × the+the four variable of simple internal circulating load) × (the 4th
Coefficient × (indoor environment temperature-outdoor environment temperature)+the five variable) the+the second aperture offset；The second aperture compensation
Value is an air conditioner pre-set aperture offset in cooling mode, value can be set according to actual needs, in this reality
It applies in example, the second aperture offset value is -50.
The value of each coefficient and variable in 4th formula is according to the air conditioner power and the simple circulation
The different situations of amount are obtained by many experiments, in the present embodiment, be can refer to table 2 and are determined each system in the 4th formula
Several and variable value.
The different air conditioner power of table 2 and corresponding 4th formula under Bu Tong simple internal circulating load
S26, in the stable aperture that is calculated and the sum of the second preset value range more than or equal to preset the
When two points of inflection, initial opening is calculated according to the 5th preset formula, otherwise, is initially opened according to preset the 6th formula calculating
Degree；
Wherein, the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/second
+ the second point of inflection of flow rate ratio
6th formula are as follows: initial opening=the+the second value range of stabilization aperture, the second flow ratio are refrigeration mould
Preset flow rate ratio under formula.
Second value range, second point of inflection, the second flow ratio be air conditioner in cooling mode
Parameter, one fixed value can be set according to the characteristic of the electric expansion valve.In the present embodiment, second model
Enclosing value is 150, and second point of inflection is 180, and the second flow ratio is 5.0.
Thus the initial opening of the electric expansion valve can be calculated, the initial opening is also the electric expansion valve
Optimal aperture under the present circumstances, can make air conditioner reach best heat transfer effect.
The initial opening control method of electric expansion valve proposed by the present invention, under air conditioner is in refrigeration mode, according to
Compressor capacity, compressor operating frequency, indoor environment temperature, outdoor environment temperature, the air conditioner power got, and it is pre-
The calculation formula set, can be calculated the optimal aperture of the electric expansion valve under the present circumstances, calculation method it is simple and
It is time-consuming less.
Further, the initial opening control of electric expansion valve of the present invention is proposed based on second embodiment or 3rd embodiment
Method fourth embodiment, in the present embodiment, referring to Fig. 4, the initial opening control method of the electric expansion valve further include:
S41, initial opening minimum value and initial opening maximum value preset under refrigeration mode or under heating mode are obtained；
The initial opening minimum value and the initial opening maximum value are according to air conditioner in refrigeration mode or heating mould
Many experiments and the value of determination under formula, are adjusted with the situation excessive or too small to the initial opening being calculated, thus
The initial opening made does not deviate by optimal aperture actually required, can just make after avoiding air conditioner from needing to adjust the long period
The electric expansion valve is optimal aperture.
In the present embodiment, air conditioner in cooling mode when, the initial opening minimum value can value be 240, it is described
Initial opening maximum value can value be 330；Air conditioner in a heating mode when, the initial opening minimum value can value be 120,
The initial opening maximum value can value be 290.
Whether the initial opening that S42, judgement are calculated is greater than or equal to the initial opening minimum value and is less than or waits
In the initial opening maximum value；
S43, when the initial opening being calculated be less than the initial opening minimum value when, by the initial opening minimum value
As the initial opening；When the initial opening being calculated is greater than the initial opening maximum value, by the initial opening
Maximum value is as the initial opening.
When the initial opening being calculated is less than the initial opening minimum value, the initial opening mistake being calculated is indicated
It is small, at this point, using the initial opening minimum value as the initial opening；Described in being greater than when the initial opening being calculated
When initial opening maximum value, indicate that the initial opening being calculated is excessive, at this point, using the initial opening maximum value as described in
Initial opening.
The initial opening control method of electric expansion valve proposed by the present invention, the initial opening to be calculated are arranged one
Suitable value range is initially opened that is, when the initial opening being calculated is less than preset initial opening minimum value by described
Minimum value is spent as the initial opening, when the initial opening being calculated is greater than preset initial opening maximum value, by institute
Initial opening maximum value is stated as the initial opening, to guarantee that obtained initial opening does not deviate by actually required optimal open
Degree, just can make the electric expansion valve be optimal aperture after avoiding air conditioner from needing to adjust the long period.
Further, propose that the initial opening control method the 5th of electric expansion valve of the present invention is implemented based on fourth embodiment
Example, in the present embodiment, the initial opening control method of the electric expansion valve further include:
In a heating mode, when the outdoor environment temperature is less than preset extremely low temperature, most by the initial opening
Small value, which is turned up, arrives the second preset aperture, wherein second aperture is less than the initial opening maximum value.
For air conditioner in a heating mode when currently detected outdoor environment temperature it is too low in the case of, be such as lower than -15
DEG C, at this point, air conditioner will limit the initial opening minimum value not less than described to quickly reach specified heating effect
Second aperture.Wherein, second aperture is the desired value obtained according to many experiments, such as 180 apertures；The pole
Low temperature is a temperature value being set according to actual conditions, such as -15 DEG C.
When the outdoor environment temperature of air conditioner in a heating mode is lower than the extremely low temperature, air conditioner is by heating mode
Under the initial opening minimum value be turned up to second aperture, when the initial opening being calculated is less than second aperture
When, using the value of second aperture as the value of the initial opening.
The initial opening control method of electric expansion valve proposed by the present invention, is detected when for air conditioner in a heating mode
The outdoor environment temperature arrived is lower than the case where preset extremely low temperature, and preset initial opening minimum value is turned up to specified and is opened
Degree, so that the initial opening of the electric expansion valve is unlikely to quick heating effect that is very low and influencing air conditioner.
The present invention also provides a kind of initial opening control devices of electric expansion valve, as shown in figure 5, showing electricity of the invention
The functional block diagram of the initial opening control device first embodiment of sub- expansion valve, the initial opening of the electric expansion valve
Control device includes:
First control module 100, after electricity operation on air conditioner, control electric expansion valve is first beaten with the aperture set
It opens, resets, opens again afterwards；When the electric expansion valve is again turned on and is opened to the first preset aperture, the electricity is maintained
The aperture of sub- expansion valve is first aperture；
Wherein, first control module 100 is specifically used for:
On air conditioner after electricity operation, controls the electric expansion valve and open to third aperture；When the electric expansion valve is beaten
When reaching the third aperture, controls the electric expansion valve closing and be reset to the 4th aperture；When the electric expansion valve is closed
When resetting to four aperture, controls the electric expansion valve and open to the first aperture.
The aperture of the setting may include one or more opening values, and in the present embodiment, the aperture of the setting includes
The third aperture, the 4th aperture, first aperture, the third aperture, the 4th aperture, first aperture
It is the opening value of three different values, is set according to demand in the default setting of air conditioner by producer, for example, this implementation
In example, the third aperture value is 248, and the 4th aperture value is 520, and the first aperture value is 480, wherein
The maximum opening that the structure of the electric expansion valve can be supported is 520, and setting air conditioner can control the electric expansion valve
The maximum opening of opening is 480.
That is, first control module 100 is specifically used for:
On air conditioner after electricity operation, controls the electric expansion valve and open to 248 apertures；When the electric expansion valve is opened
When to 248 aperture, controls the electric expansion valve closing and be reset to 520 apertures；When electric expansion valve closing resets to 520
When aperture, controls the electric expansion valve and open to 480 apertures.
Computing module 200, for when the electric expansion valve is again turned on and is opened to the first preset aperture, according to
Compressor capacity, compressor operating frequency, environment temperature, the air conditioner power got, calculates the electric expansion valve and is working as
Initial opening under preceding environment；
When the electric expansion valve is again turned on and is opened to 480 aperture, the first control module 100 of air conditioner is maintained
The aperture of the electric expansion valve is opened in 480 apertures, and at the same time, the computing module 200 of air conditioner starts to obtain the pressure
Contracting machine capacity, the compressor operating frequency, the environment temperature, the air conditioner power, and according to these ginsengs got
Several values calculates the initial opening of the electric expansion valve under the present circumstances.
Wherein, when the current environment refers to that the electric expansion valve is again turned on and is opened to 480 aperture, air conditioner exists
Running environment at this time；The environment temperature includes indoor environment temperature and/or outdoor environment temperature；The compressor capacity is
A pre-set value according to the default setting parameter of compressor；The compressor operating frequency is empty under the present circumstances
The value for the compressor operating frequency for adjusting device to be calculated according to corresponding feedback current；The indoor environment temperature is according to interior
The detected temperature value of the temperature sensor being arranged on machine；The outdoor environment temperature is arranged according on outdoor unit
The detected temperature value of temperature sensor；The air conditioner power is the operation that air conditioner detects under the present circumstances
Performance number.
Second control module 300 is opened for controlling the electric expansion valve to the initial opening.
Can when the electric expansion valve is again turned on and is opened to the first preset aperture from preset time period after, or
When obtaining the initial opening, the second control module 300 of air conditioner, which controls the electric expansion valve, to be opened to described and initially opens
Degree.Wherein, the preset time period is a pre-set duration value, such as 1 second, value according to actual needs depending on.One
As, it calculates duration spent by the initial duration and is less than the preset time period, if there is the calculating initial duration institute
The duration of consuming is greater than the preset time period, then second control module 300 can continue to after the preset time period
The aperture of the electric expansion valve is that it is swollen to control the electronics when initial opening is calculated for first aperture
Swollen valve is opened to the initial opening.
The initial opening control device of electric expansion valve proposed by the present invention, first control electric expansion valve are opened with what is set
Degree is first opened, rear reset, is opened again, when the electric expansion valve is again turned on and is opened to the first preset aperture, is maintained
The aperture of the electric expansion valve is first aperture, and according to compressor capacity, compressor operating frequency, the ring got
Border temperature, air conditioner power calculate the initial opening of the electric expansion valve under the present circumstances, control the electric expansion valve
It opens to the initial opening, so that the initial opening of air conditioner is no longer a fixed value, but can be according to air conditioner
Running environment after powering on adaptively determines a suitable initial opening, to make the electric expansion valve in a short time
Aperture can be optimal, air conditioner is made to reach best heat transfer effect.
Further, the initial opening control device second of electric expansion valve of the present invention is proposed based on above-mentioned first embodiment
Embodiment, in the present embodiment, referring to Fig. 6, in a heating mode, the environment temperature includes outdoor environment temperature, the meter
Calculating module 200 includes:
First computing unit 201 will be counted for calculating the product of the compressor capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after being rounded；
The value of first variable is one desired value of determination according to many experiments, in the present embodiment, described
The calculation formula of first variable-value 100, the simple internal circulating load may be expressed as:
Simple internal circulating load=(compressor operating frequency × compressor capacity)/100
Second computing unit 202, for determining preset according to the air conditioner power and the outdoor environment temperature
The value of each coefficient and variable in one formula, and in conjunction with the simple internal circulating load, the outdoor environment temperature and preset
One aperture offset calculates according to first formula and stablizes aperture；
Wherein, first formula are as follows: stablize aperture=(the first coefficient × the-the second variable of simple internal circulating load) × (second
Coefficient × outdoor environment temperature+third variable) the+the first aperture offset；The first aperture offset is that air conditioner is heating
A pre-set aperture offset, can set value according to actual needs under mode, and in the present embodiment, described first opens
Spending offset value is -12.
The value of each coefficient and variable in first formula is according to the air conditioner power and the outdoor environment
The different situations of temperature are obtained by many experiments, in the present embodiment, can refer to each in determining first formula of table 1
The value of coefficient and variable.
Corresponding first formula at a temperature of the different air conditioner power of table 1 and different outdoor environments
Third computing unit 203, for the stable aperture being calculated with it is the first preset value range and big
When preset first point of inflection, initial opening is calculated according to the second preset formula, otherwise, according to preset third
Formula calculates initial opening；
Wherein, second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/first
+ the first point of inflection of flow rate ratio
The third formula are as follows: initial opening=the+the first value range of stabilization aperture, the first flow ratio are heating mould
Preset flow rate ratio under formula.
First value range, first point of inflection, the first flow ratio be air conditioner in a heating mode
Parameter, one fixed value can be set according to the characteristic of the electric expansion valve.In the present embodiment, first model
Enclosing value is 150, and first point of inflection is 180, and the first flow ratio is 5.0.
Thus the initial opening of the electric expansion valve can be calculated, the initial opening is also the electric expansion valve
Optimal aperture under the present circumstances, can make air conditioner reach best heat transfer effect.
The initial opening control device of electric expansion valve proposed by the present invention, when air conditioner is under heating mode, according to
Compressor capacity, compressor operating frequency, outdoor environment temperature, air conditioner power and the preset calculation formula got,
The optimal aperture of the electric expansion valve under the present circumstances can be calculated, calculate simple and time-consuming less.
Further, the initial opening control device third of electric expansion valve of the present invention is proposed based on above-mentioned first embodiment
Embodiment, in the present embodiment, referring to Fig. 7, in cooling mode, the environment temperature includes indoor environment temperature and outdoor ring
Border temperature, the computing module 200 include:
4th computing unit 204 will be counted for calculating the product of the compressor capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after being rounded；
The value of first variable is one desired value of determination according to many experiments, in the present embodiment, described
The calculation formula of first variable-value 100, the simple internal circulating load may be expressed as:
Simple internal circulating load=(compressor operating frequency × compressor capacity)/100
5th computing unit 205, for determining preset the 4th according to the air conditioner power and the simple internal circulating load
The value of each coefficient and variable in formula, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment
Temperature and the second preset aperture offset calculate according to the 4th formula and stablize aperture；
Wherein, the 4th formula are as follows: stablize aperture=(third coefficient × the+the four variable of simple internal circulating load) × (the 4th
Coefficient × (indoor environment temperature-outdoor environment temperature)+the five variable) the+the second aperture offset；The second aperture compensation
Value is an air conditioner pre-set aperture offset in cooling mode, value can be set according to actual needs, in this reality
It applies in example, the second aperture offset value is -50.
The value of each coefficient and variable in 4th formula is according to the air conditioner power and the simple circulation
The different situations of amount are obtained by many experiments, in the present embodiment, be can refer to table 2 and are determined each system in the 4th formula
Several and variable value.
The different air conditioner power of table 2 and corresponding 4th formula under Bu Tong simple internal circulating load
6th computing unit 206, for the stable aperture being calculated with it is the second preset value range and big
When preset second point of inflection, initial opening is calculated according to the 5th preset formula, otherwise, according to the preset the 6th
Formula calculates initial opening；
Wherein, the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/second
+ the second point of inflection of flow rate ratio
6th formula are as follows: initial opening=the+the second value range of stabilization aperture, the second flow ratio are refrigeration mould
Preset flow rate ratio under formula.
Second value range, second point of inflection, the second flow ratio be air conditioner in cooling mode
Parameter, one fixed value can be set according to the characteristic of the electric expansion valve.In the present embodiment, second model
Enclosing value is 150, and second point of inflection is 180, and the second flow ratio is 5.0.
Thus the initial opening of the electric expansion valve can be calculated, the initial opening is also the electric expansion valve
Optimal aperture under the present circumstances, can make air conditioner reach best heat transfer effect.
The initial opening control device of electric expansion valve proposed by the present invention, under air conditioner is in refrigeration mode, according to
Compressor capacity, compressor operating frequency, indoor environment temperature, outdoor environment temperature, the air conditioner power got, and it is pre-
The optimal aperture of the electric expansion valve under the present circumstances can be calculated in the calculation formula set, and calculate simple and time-consuming
It is less.
Further, the initial opening of electric expansion valve of the present invention is proposed based on above-mentioned second embodiment or 3rd embodiment
Control device fourth embodiment, in the present embodiment, referring to Fig. 8, the initial opening control device of the electric expansion valve is also wrapped
Aperture limitation module 400 is included, the aperture limitation module 400 includes:
Acquiring unit 401, for obtaining initial opening minimum value preset under refrigeration mode or under heating mode and initial
Aperture maximum value；
The initial opening minimum value and the initial opening maximum value are according to air conditioner in refrigeration mode or heating mould
Many experiments and the value of determination under formula, are adjusted with the situation excessive or too small to the initial opening being calculated, thus
The initial opening made does not deviate by optimal aperture actually required, can just make after avoiding air conditioner from needing to adjust the long period
The electric expansion valve is optimal aperture.
In the present embodiment, air conditioner in cooling mode when, the initial opening minimum value can value be 240, it is described
Initial opening maximum value can value be 330；Air conditioner in a heating mode when, the initial opening minimum value can value be 120,
The initial opening maximum value can value be 290.
Judging unit 402, for judging it is minimum whether the initial opening being calculated is greater than or equal to the initial opening
It is worth and is less than or equal to the initial opening maximum value；
Updating unit 403, for when the initial opening being calculated be less than the initial opening minimum value when, will it is described at the beginning of
Beginning, aperture minimum value was as the initial opening；It, will when the initial opening being calculated is greater than the initial opening maximum value
The initial opening maximum value is as the initial opening.
When the initial opening being calculated is less than the initial opening minimum value, the initial opening mistake being calculated is indicated
It is small, at this point, the updating unit 403 is using the initial opening minimum value as the initial opening；It is initial when what is be calculated
When aperture is greater than the initial opening maximum value, indicate that the initial opening being calculated is excessive, at this point, the updating unit 403
Using the initial opening maximum value as the initial opening.
The initial opening control device of electric expansion valve proposed by the present invention, the initial opening to be calculated are arranged one
Suitable value range is initially opened that is, when the initial opening being calculated is less than preset initial opening minimum value by described
Minimum value is spent as the initial opening, when the initial opening being calculated is greater than preset initial opening maximum value, by institute
Initial opening maximum value is stated as the initial opening, to guarantee that obtained initial opening does not deviate by actually required optimal open
Degree, just can make the electric expansion valve be optimal aperture after avoiding air conditioner from needing to adjust the long period.
Further, the initial opening control device the 5th of electric expansion valve of the present invention is proposed based on above-mentioned fourth embodiment
Embodiment, in the present embodiment, referring to Fig. 9, in a heating mode, the aperture limits module 400 further include:
Adjustment unit 404, for when the outdoor environment temperature be less than preset extremely low temperature when, by the initial opening
Minimum value is turned up to the second preset aperture, wherein second aperture is less than the initial opening maximum value.
For air conditioner in a heating mode when currently detected outdoor environment temperature it is too low in the case of, be such as lower than -15
DEG C, at this point, air conditioner will limit the initial opening minimum value not less than described to quickly reach specified heating effect
Second aperture.Wherein, second aperture is the desired value obtained according to many experiments, such as 180 apertures；The pole
Low temperature is a temperature value being set according to actual conditions, such as -15 DEG C.
When the outdoor environment temperature of air conditioner in a heating mode is lower than the extremely low temperature, the adjustment unit of air conditioner
404 the initial opening minimum value under heating mode is turned up to second aperture, when the initial opening being calculated is small
When second aperture, the updating unit 403 is using the value of second aperture as the value of the initial opening.
The initial opening control device of electric expansion valve proposed by the present invention, is detected when for air conditioner in a heating mode
The outdoor environment temperature arrived is lower than the case where preset extremely low temperature, and preset initial opening minimum value is turned up to specified and is opened
Degree, so that the initial opening of the electric expansion valve is unlikely to quick heating effect that is very low and influencing air conditioner.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of initial opening control method of electric expansion valve, which is characterized in that the initial opening control of the electric expansion valve
Method processed includes:
On air conditioner after electricity operation, control electric expansion valve is first opened with the aperture set, rear reset, is opened again；
When the electric expansion valve is again turned on and is opened to the first preset aperture, the aperture of the electric expansion valve is maintained
For first aperture, and it is real according to the compressor rated capacity, compressor operating frequency, environment temperature, air conditioner got
When power, calculate the initial opening of the electric expansion valve under the present circumstances；
The electric expansion valve is controlled to open to the initial opening；
Wherein, in a heating mode, the environment temperature includes outdoor environment temperature, and the compressor that the basis is got is specified
Capacity, compressor operating frequency, environment temperature, air conditioner realtime power calculate the electric expansion valve under the present circumstances
Initial opening includes:
The product for calculating the compressor rated capacity and the compressor operating frequency, by the product being calculated and preset
First variable obtains simple internal circulating load after dividing exactly operation；
Each coefficient and change in the first preset formula are determined according to the air conditioner realtime power and the outdoor environment temperature
The value of amount, and in conjunction with the simple internal circulating load, the outdoor environment temperature and the first preset aperture offset, according to described
First formula, which calculates, stablizes aperture；Wherein, first formula are as follows: stablize aperture=(the first coefficient × simple internal circulating load-the
Two variables) × (the second coefficient × outdoor environment temperature+third variable)+the first aperture offset；
In the stable aperture that is calculated and the sum of the first preset value range more than or equal to the first preset point of inflection
When, initial opening is calculated according to the second preset formula, otherwise, calculates initial opening according to preset third formula；Wherein, institute
State the second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/first flow ratio+the first becomes
Qu Dian, the third formula are as follows: initial opening=the+the first value range of stabilization aperture, the first flow ratio are heating mode
Under preset flow rate ratio.
2. the initial opening control method of electric expansion valve as described in claim 1, which is characterized in that in cooling mode,
The environment temperature includes indoor environment temperature and outdoor environment temperature, compressor rated capacity that the basis is got, pressure
Contracting machine running frequency, environment temperature, air conditioner realtime power calculate the initial opening of the electric expansion valve under the present circumstances
Include:
The product for calculating the compressor rated capacity and the compressor operating frequency, by the product being calculated and preset
First variable obtains simple internal circulating load after dividing exactly operation；
Each coefficient and variable in the 4th preset formula are determined according to the air conditioner realtime power and the simple internal circulating load
Value, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment temperature and the second preset aperture
Offset calculates according to the 4th formula and stablizes aperture；Wherein, the 4th formula are as follows: stable aperture=(third coefficient ×
The+the four variable of simple internal circulating load) × (the 4th coefficient × (indoor environment temperature-outdoor environment temperature)+the five variable)+the second
Aperture offset；
In the stable aperture that is calculated and the sum of the second preset value range more than or equal to the second preset point of inflection
When, initial opening is calculated according to the 5th preset formula, otherwise, calculates initial opening according to the 6th preset formula；Wherein, institute
State the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/second flow ratio+the second becomes
Qu Dian, the 6th formula are as follows: initial opening=the+the second value range of stabilization aperture, the second flow ratio are refrigeration mode
Under preset flow rate ratio.
3. the initial opening control method of electric expansion valve as claimed in claim 1 or 2, which is characterized in that the electronics is swollen
The initial opening control method of swollen valve further include:
Obtain initial opening minimum value and initial opening maximum value preset under refrigeration mode or under heating mode；
Judge whether the initial opening being calculated is greater than or equal to the initial opening minimum value and is less than or equal to described first
Beginning aperture maximum value；
When the initial opening being calculated is less than the initial opening minimum value, using the initial opening minimum value as described in
Initial opening；When the initial opening being calculated is greater than the initial opening maximum value, the initial opening maximum value is made
For the initial opening.
4. the initial opening control method of electric expansion valve as claimed in claim 3, which is characterized in that the electric expansion valve
Initial opening control method further include:
In a heating mode, when the outdoor environment temperature is less than preset extremely low temperature, by the initial opening minimum value
The second preset aperture is turned up, wherein second aperture is less than the initial opening maximum value.
5. a kind of initial opening control device of electric expansion valve, which is characterized in that the initial opening control of the electric expansion valve
Device processed includes:
First control module, after electricity operation on air conditioner, control electric expansion valve is first opened with the aperture set, is rear multiple
Position is opened again；When the electric expansion valve is again turned on and is opened to the first preset aperture, the electric expansion valve is maintained
Aperture be first aperture；
Computing module, for when the electric expansion valve is again turned on and is opened to the first preset aperture, according to getting
Compressor rated capacity, compressor operating frequency, environment temperature, air conditioner realtime power, calculate the electric expansion valve and exist
Initial opening under current environment；
Second control module is opened for controlling the electric expansion valve to the initial opening；
Wherein, in a heating mode, the environment temperature includes outdoor environment temperature, and the computing module includes:
First computing unit will be calculated for calculating the product of the compressor rated capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after dividing exactly operation；
Second computing unit, for determining that preset first is public according to the air conditioner realtime power and the outdoor environment temperature
The value of each coefficient and variable in formula, and opened in conjunction with the simple internal circulating load, the outdoor environment temperature and preset first
Offset is spent, is calculated according to first formula and stablizes aperture；Wherein, first formula are as follows: stablize aperture=(the first coefficient
The-the second variable of × simple internal circulating load) × (the second coefficient × outdoor environment temperature+third variable)+the first aperture offset；
Third computing unit, for being greater than or equal in the sum of the stable aperture and the first preset value range that are calculated
When preset first point of inflection, initial opening is calculated according to the second preset formula, otherwise, is calculated according to preset third formula
Initial opening；Wherein, second formula are as follows: initial opening=(stablizing-the first point of inflection of the+the first value range of aperture)/first
+ the first point of inflection of flow rate ratio, the third formula are as follows: initial opening=the+the first value range of stabilization aperture, the first flow
Ratio is flow rate ratio preset under heating mode.
6. the initial opening control device of electric expansion valve as claimed in claim 5, which is characterized in that in cooling mode,
The environment temperature includes indoor environment temperature and outdoor environment temperature, and the computing module includes:
4th computing unit will be calculated for calculating the product of the compressor rated capacity and the compressor operating frequency
Obtained product and the first preset variable obtains simple internal circulating load after dividing exactly operation；
5th computing unit, for determining the 4th preset formula according to the air conditioner realtime power and the simple internal circulating load
In the value of each coefficient and variable, and in conjunction with the simple internal circulating load, the indoor environment temperature, the outdoor environment temperature
With the second preset aperture offset, is calculated according to the 4th formula and stablize aperture；Wherein, the 4th formula are as follows: stablize
Aperture=(third coefficient × the+the four variable of simple internal circulating load) × (the 4th coefficient × (indoor environment temperature-outdoor environment temperature
Degree) the+the five variable) the+the second aperture offset；
6th computing unit, for being greater than or equal in the sum of the stable aperture and the second preset value range that are calculated
When preset second point of inflection, initial opening is calculated according to the 5th preset formula, otherwise, is calculated according to the 6th preset formula
Initial opening；Wherein, the 5th formula are as follows: initial opening=(stablizing-the second point of inflection of the+the second value range of aperture)/second
+ the second point of inflection of flow rate ratio, the 6th formula are as follows: initial opening=the+the second value range of stabilization aperture, the second flow
Ratio is flow rate ratio preset under refrigeration mode.
7. such as the initial opening control device of electric expansion valve described in claim 5 or 6, which is characterized in that the electronics is swollen
The initial opening control device of swollen valve further includes aperture limitation module, and the aperture limitation module includes:
Acquiring unit, the initial opening minimum value and initial opening for obtaining preset under refrigeration mode or under heating mode are maximum
Value；
Judging unit, for judging whether the initial opening being calculated is greater than or equal to the initial opening minimum value and is less than
Or it is equal to the initial opening maximum value；
Updating unit, for when the initial opening being calculated be less than the initial opening minimum value when, by the initial opening
Minimum value is as the initial opening；It, will be described first when the initial opening being calculated is greater than the initial opening maximum value
Beginning, aperture maximum value was as the initial opening.
8. the initial opening control device of electric expansion valve as claimed in claim 7, which is characterized in that in a heating mode,
The aperture limits module further include:
Adjustment unit, for when the outdoor environment temperature be less than preset extremely low temperature when, by the initial opening minimum value
The second preset aperture is turned up, wherein second aperture is less than the initial opening maximum value.
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| CN104930772B (en) * | 2015-05-14 | 2017-07-28 | 珠海格力电器股份有限公司 | Control method and device for initial opening degree of electronic expansion valve and air conditioning system |
| CN106403184B (en) * | 2016-09-23 | 2019-03-19 | 珠海格力电器股份有限公司 | Method and device for calculating initial opening degree of electronic expansion valve |
| CN106568244B (en) * | 2016-11-09 | 2019-02-12 | 重庆美的通用制冷设备有限公司 | A kind of electric expansion valve pretravel control method, system and electrical equipment |
| CN106765564B (en) * | 2016-12-06 | 2019-01-22 | 珠海格力电器股份有限公司 | Parallel electronic expansion valve control method and device and air conditioning unit with device |
| CN106524361A (en) * | 2016-12-09 | 2017-03-22 | 广东美的制冷设备有限公司 | Air-conditioner and starting method thereof |
| CN109084445B (en) * | 2018-08-23 | 2019-10-29 | 宁波奥克斯电气股份有限公司 | A kind of initial opening method of adjustment, device and the air conditioner of electric expansion valve |
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