CN105928276B - A kind of air-conditioning hot-gas bypass electromagnetic valve control method, system and air-conditioning - Google Patents
A kind of air-conditioning hot-gas bypass electromagnetic valve control method, system and air-conditioning Download PDFInfo
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- CN105928276B CN105928276B CN201610297648.9A CN201610297648A CN105928276B CN 105928276 B CN105928276 B CN 105928276B CN 201610297648 A CN201610297648 A CN 201610297648A CN 105928276 B CN105928276 B CN 105928276B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- 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
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- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
Abstract
The present invention provides a kind of air-conditioning hot-gas bypass electromagnetic valve control method, and air-conditioning includes conditioning control unit, and conditioning control unit is connected with the solenoid valve for controlling hot-gas bypass opening and closing, the opens solenoid valve when meeting bypass solenoid valve unlocking condition；Solenoid valve is closed when meeting bypass solenoid valve closedown condition；Wherein, bypass solenoid valve unlocking condition is：Outdoor environment temperature T4 is less than A1 and compressor frequency INV and is more than H1；And compressor exhaust temperature T5 values B1, compressor exhaust temperature T5 and the difference of the difference C1 of condensation side tube temperature T3, compressor exhaust temperature the T5 corresponding saturation temperature Tc with condensing pressure are less than D1 and the compression ratio Pr of compressor is more than E1, in either condition and any combination.Other than using delivery temperature T5, the unlatching of the compression ratio control solenoid valve also by the discharge superheat of compressor, and by compressor improves the validity and reliability of hot gas bypass solenoid valve control.
Description
Technical field
The present invention relates to air conditioner controlling technology field, especially a kind of air-conditioning hot-gas bypass electromagnetic valve control method is
System and air-conditioning.
Background technology
Air-conditioning technical can increase the control of hot-gas bypass for the reliability service of low-temperature heating in air-conditioning system at present.
Hot-gas bypass is exactly a kind of side that on high-tension side high temperature liquid refrigerant is bypassed to system low-voltage side (air return end)
Method, centre are opened and closed using solenoid valve control.
The effect of hot-gas bypass is exactly effective limitation evaporating pressure, allows compressor under the back pressure for meeting design requirement
Operation improves system reliability；Current air-conditioning products are mainly the unlatching that solenoid valve is controlled using delivery temperature, control system
System is not very reliable.
Invention content
A kind of air-conditioning hot-gas bypass electromagnetic valve control method of present invention offer, system and air-conditioning, to solve airconditioning control
The technical issues of control of system hot-gas bypass is not very reliable.
In order to solve the above technical problem, the present invention provides a kind of air-conditioning hot-gas bypass electromagnetic valve control method, air-conditionings
Including conditioning control unit, the conditioning control unit is connected with the bypass electromagnetism for controlling hot-gas bypass opening and closing
Valve, when meeting bypass solenoid valve unlocking condition, the conditioning control unit opens the bypass solenoid valve；It is electric when meeting bypass
When magnet valve closedown condition, the conditioning control unit closes the bypass solenoid valve；
Wherein, the bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 be less than or equal to first environment temperature preset value A1, and compressor frequency INV be more than or
Equal to first frequency preset value H1；
And meet in following conditions any one or several combinations：
Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
It is default that the difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to second
Temperature difference D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
The beneficial effects of the invention are as follows：By setting bypass solenoid valve unlocking condition and bypass solenoid valve closedown condition, point
Not Zhi Hang the unlatching of solenoid valve and the closing of solenoid valve, in addition to using other than delivery temperature T5, also passing through the discharge superheat of compressor
Degree, the i.e. difference and compressor exhaust temperature T5 and condensing pressure of compressor exhaust temperature T5 and condensation side tube temperature T3 are corresponding full
The unlatching of solenoid valve is controlled with the difference of temperature Tc；And the unlatching of the compression ratio control solenoid valve by compressor, energy
The pressure condition of enough precisely reaction compressors, improves the validity and reliability of hot gas bypass solenoid valve control.
Further, the bypass solenoid valve closedown condition is any one in following conditions or several combinations：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
It is default that the difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th
Temperature difference D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
Advantageous effect using above-mentioned further scheme is：In solenoid valve closedown condition, in addition to using delivery temperature T5
Outside, also by the discharge superheat of compressor, i.e. the difference and compressor of compressor exhaust temperature T5 and condensation side tube temperature T3 are arranged
The difference of temperature degree T5 saturation temperature Tcs corresponding with condensing pressure controls the closing of solenoid valve；And the compression for passing through compressor
Than controlling the closing of solenoid valve, the validity and reliability of hot gas bypass solenoid valve control is improved.
Further, 0 DEG C of 5 DEG C of ＜ A1 ＜, 40Hz ＜ H1 ＜ 50Hz, 30 DEG C of 50 DEG C of ＜ B1 ＜, 0 DEG C of 10 DEG C of ＜ C1 ＜, 0 DEG C of ＜
10 DEG C of D1 ＜, E1 ＞ 10.
Advantageous effect using above-mentioned further scheme is：Range is limited by the way that above-mentioned parameter is arranged, improves solenoid valve
Open the accuracy of control.
Further, A2 >=7 DEG C, H2 >=60Hz, B2 >=60 DEG C, C2 >=15 DEG C, D2 >=15 DEG C, E2 ＜ 8.
Advantageous effect using above-mentioned further scheme is：Range is limited by the way that above-mentioned parameter is arranged, improves solenoid valve
The accuracy of closing control.
The present invention also provides a kind of air-conditioning hot-gas bypass electromagnetic valve controlling systems, including are used to control hot-gas bypass unlatching
Conditioning control unit with the bypass solenoid valve of disconnection and for controlling the bypass solenoid valve, the conditioning control unit include
Solenoid valve Open control module and solenoid valve closing control module,
The solenoid valve Open control module, for when meeting bypass solenoid valve unlocking condition, the side to be opened in control
Three-way electromagnetic valve；
The solenoid valve closing control module, for when meeting bypass solenoid valve closedown condition, the side to be closed in control
Three-way electromagnetic valve；
In the solenoid valve Open control module, the bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 be less than or equal to first environment temperature preset value A1, and compressor frequency INV be more than or
Equal to first frequency preset value H1；
And meet in following conditions any one or several combinations：
Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
It is default that the difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to second
Temperature difference D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
The advantageous effect of control system of the present invention is：Pass through solenoid valve Open control module and solenoid valve closing control mould
Block executes the closing of the unlatching and solenoid valve of solenoid valve respectively, other than using delivery temperature T5, also passes through the exhaust of compressor
The difference and compressor exhaust temperature T5 and condensing pressure pair of the degree of superheat, i.e. compressor exhaust temperature T5 and condensation side tube temperature T3
The difference of saturation temperature Tc is answered to control the unlatching of solenoid valve；And opening by the compression ratio control solenoid valve of compressor
It opens, can precisely react the pressure condition of compressor, improve the validity and reliability of hot gas bypass solenoid valve control.
Further, in the solenoid valve closing control module, the bypass solenoid valve closedown condition is in following conditions
Any one or several combinations：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
It is default that the difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th
Temperature difference D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
Advantageous effect using above-mentioned further scheme is：In solenoid valve closing control module, in addition to using delivery temperature
Outside T5, also pass through the discharge superheat of compressor, the i.e. difference and compressor of compressor exhaust temperature T5 and condensation side tube temperature T3
The difference of delivery temperature T5 saturation temperature Tcs corresponding with condensing pressure controls the closing of solenoid valve；And the pressure for passing through compressor
Ratio contract to control the closing of solenoid valve, improves the validity and reliability of hot gas bypass solenoid valve control.
Further, 0 DEG C of 5 DEG C of ＜ A1 ＜, 40Hz ＜ H1 ＜ 50Hz, 30 DEG C of 50 DEG C of ＜ B1 ＜, 0 DEG C of 10 DEG C of ＜ C1 ＜, 0 DEG C of ＜
10 DEG C of D1 ＜, E1 ＞ 10.
Advantageous effect using above-mentioned further scheme is：Range is limited by the way that above-mentioned parameter is arranged, improves solenoid valve
Open the accuracy of control.
Further, A2 >=7 DEG C, H2 >=60Hz, B2 >=60 DEG C, C2 >=15 DEG C, D2 >=15 DEG C, E2 ＜ 8.
Advantageous effect using above-mentioned further scheme is：Range is limited by the way that above-mentioned parameter is arranged, improves solenoid valve
The accuracy of closing control.
The present invention also provides a kind of air-conditioning, including air conditioning control device, the air conditioning control device is provided with above-mentioned sky
Adjust hot-gas bypass electromagnetic valve controlling system.
The advantageous effect of air-conditioning of the present invention is：By in the above-mentioned control system of air conditioning control device, passing through the row of compressor
The difference and compressor exhaust temperature T5 and condensing pressure of the gas degree of superheat, i.e. compressor exhaust temperature T5 and condensation side tube temperature T3
The difference of saturation temperature Tc is corresponded to control the unlatching of solenoid valve；And opening by the compression ratio control solenoid valve of compressor
It opens, improves the validity and reliability of hot gas bypass solenoid valve control, improve user experience.
Description of the drawings
Fig. 1 is the control flow chart that air-conditioning hot-gas bypass solenoid valve of the present invention opens control,
Fig. 2 is the control flow chart of air-conditioning hot-gas bypass solenoid valve closing control of the present invention,
Fig. 3 is the structure diagram of air-conditioning hot-gas bypass electromagnetic valve controlling system of the present invention.
In attached drawing, parts list represented by the reference numerals are as follows：
100, solenoid valve Open control module, 200, solenoid valve closing control module
Specific implementation mode
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
The control flow chart that air-conditioning hot-gas bypass of the present invention opens control with solenoid valve bypasses electromagnetism referring to Fig. 1 when meeting
When valve unlocking condition, conditioning control unit opens bypass solenoid valve；
Wherein, bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 be less than or equal to first environment temperature preset value A1, and compressor frequency INV be more than or
Equal to first frequency preset value H1；
And meet in following conditions any one or several combinations：
Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
The difference of compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
The difference of compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to the second fiducial temperature
Value D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
In solenoid valve closedown condition, other than using delivery temperature T5, also by the discharge superheat of compressor, that is, press
The difference and the compressor exhaust temperature T5 and corresponding saturation temperature Tc of condensing pressure of contracting machine delivery temperature T5 and condensation side tube temperature T3
Difference control the closing of solenoid valve；And the closing of the compression ratio control solenoid valve by compressor, improve hot gas
The validity and reliability of bypass solenoid valve control.
In a particular embodiment, 0 DEG C of 5 DEG C of ＜ A1 ＜, 40Hz ＜ H1 ＜ 50Hz, 30 DEG C of 50 DEG C of ＜ B1 ＜, 0 DEG C of ＜ C1 ＜ 10
DEG C, 0 DEG C of 10 DEG C of ＜ D1 ＜, E1 ＞ 10.
In the first embodiment, C1 is 8 DEG C, and conditioning control unit detects, compressor exhaust temperature T5 is 110 DEG C, cold
Solidifying side pipe temperature T3 is 105 DEG C, T5-T3=110 DEG C -105 DEG C=5 DEG C ＜ C1=8 DEG C, so opening bypass solenoid valve.
The control flow chart of air-conditioning hot-gas bypass of the present invention solenoid valve closing control bypasses electromagnetism referring to Fig. 2, when meeting
When valve closedown condition, conditioning control unit closes bypass solenoid valve；
Wherein, bypass solenoid valve closedown condition is any one in following conditions or several combinations：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
The difference of compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th fiducial temperature
Value D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
In solenoid valve closedown condition, other than using delivery temperature T5, also by the discharge superheat of compressor, that is, press
The difference and the compressor exhaust temperature T5 and corresponding saturation temperature Tc of condensing pressure of contracting machine delivery temperature T5 and condensation side tube temperature T3
Difference control the closing of solenoid valve；And the closing of the compression ratio control solenoid valve by compressor, it can be precisely anti-
The pressure condition for answering compressor improves the validity and reliability of hot gas bypass solenoid valve control.
In a particular embodiment, A2 >=7 DEG C, H2 >=60Hz, B2 >=60 DEG C, C2 >=15 DEG C, D2 >=15 DEG C, E2 ＜ 8.
In a second embodiment, D2=10 DEG C, T5=115 DEG C of compressor exhaust temperature, condensing pressure corresponds to saturation temperature
Tc=100 DEG C, T5-Tc=115 DEG C -100 DEG C=15 DEG C ＞ D2=10 DEG C, so closing bypass solenoid valve.
The structure diagram of air-conditioning hot-gas bypass electromagnetic valve controlling system of the present invention is referring to Fig. 3, including is used to control hot gas
Bypass unlatching and the bypass solenoid valve disconnected and the conditioning control unit for controlling bypass solenoid valve, conditioning control unit include
Solenoid valve Open control module 100 and solenoid valve closing control module 200,
Solenoid valve Open control module 100, for when meeting bypass solenoid valve unlocking condition, conditioning control unit to be opened
Solenoid valve；
In solenoid valve Open control module 100, bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 be less than or equal to first environment temperature preset value A1, and compressor frequency INV be more than or
Equal to first frequency preset value H1；
And meet in following conditions any one or several combinations：
Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
The difference of compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
The difference of compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to the second fiducial temperature
Value D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
Solenoid valve closing control module 200, for when meeting bypass solenoid valve closedown condition, conditioning control unit to be closed
Solenoid valve；
Wherein, in solenoid valve closing control module 200, bypass solenoid valve closedown condition is any one in following conditions
Or several combinations：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
The difference of compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th fiducial temperature
Value D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc
For the condensing pressure of compressor, Pe is the evaporating pressure of compressor.
By solenoid valve Open control module and solenoid valve closing control module, unlatching and the electromagnetism of solenoid valve are executed respectively
The closing of valve, in addition to using other than delivery temperature T5, also by the discharge superheat of compressor, i.e. compressor exhaust temperature T5 with it is cold
The difference of solidifying side pipe temperature T3 and the difference of compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure control solenoid valve
Unlatching；And the unlatching of the compression ratio control solenoid valve by compressor, the pressure condition of compressor can be precisely reacted,
Improve the validity and reliability of hot gas bypass solenoid valve control.
In solenoid valve closing control module, other than using delivery temperature T5, also by the discharge superheat of compressor, i.e.,
The difference and compressor exhaust temperature T5 and the corresponding saturation temperature of condensing pressure of compressor exhaust temperature T5 and condensation side tube temperature T3
The difference of Tc controls the closing of solenoid valve；And the closing of the compression ratio control solenoid valve by compressor, improve heat
The validity and reliability of gas bypass solenoid valve control.
The embodiment of the present invention also provides a kind of air-conditioning, including air conditioning control device, and air conditioning control device is provided with above-mentioned
Air-conditioning hot-gas bypass electromagnetic valve controlling system.
Above-mentioned control system is set by the control unit in air-conditioning, passes through the discharge superheat of compressor, i.e. compressor
The difference of the difference and compressor exhaust temperature T5 and the corresponding saturation temperature Tc of condensing pressure of delivery temperature T5 and condensation side tube temperature T3
Value controls the unlatching of solenoid valve；And the unlatching of the compression ratio control solenoid valve by compressor, improve hot-gas bypass
The validity and reliability of solenoid valve control, improves user experience.
In the description of the present invention, it is to be understood that, term "center", " length ", " width ", "upper", "lower", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner" is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be direct phase
Even, can also can be indirectly connected through an intermediary that the interaction of the connection or two elements inside two elements is closed
System.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood as the case may be
Meaning.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Air-conditioning hot-gas bypass electromagnetic valve control method, system and the air-conditioning of the present invention are described in detail above,
Principle and implementation of the present invention are described for specific case used herein.The explanation of above example is only used
Understand core of the invention thought in help；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention,
There will be changes in specific implementation mode and application range, in conclusion the content of the present specification should not be construed as to this hair
Bright limitation.
Claims (9)
1. a kind of air-conditioning hot-gas bypass electromagnetic valve control method, air-conditioning include conditioning control unit, which is characterized in that the sky
Control unit is adjusted to be connected with the bypass solenoid valve for controlling hot-gas bypass opening and closing, when meeting bypass solenoid valve open strip
When part, the conditioning control unit opens the bypass solenoid valve；When meeting bypass solenoid valve closedown condition, the air-conditioning control
Unit processed closes the bypass solenoid valve；
Wherein, the bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 is less than or equal to first environment temperature preset value A1, and compressor frequency INV is greater than or equal to
First frequency preset value H1；Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
And meet in following conditions any one or several combinations：
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
The difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to the second fiducial temperature
Value D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc are pressure
The condensing pressure of contracting machine, Pe are the evaporating pressure of compressor.
2. air-conditioning hot-gas bypass electromagnetic valve control method according to claim 1, which is characterized in that the bypass electromagnetism
Valve closedown condition is any one or several combinations in following conditions：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
The difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th fiducial temperature
Value D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc are pressure
The condensing pressure of contracting machine, Pe are the evaporating pressure of compressor.
3. air-conditioning hot-gas bypass electromagnetic valve control method according to claim 1 or 2, which is characterized in that 0 DEG C of ＜ A1 ＜
5 DEG C, 40Hz ＜ H1 ＜ 50Hz, 30 DEG C of 50 DEG C of ＜ B1 ＜, 0 DEG C of 10 DEG C of ＜ C1 ＜, 0 DEG C of 10 DEG C of ＜ D1 ＜, E1 ＞ 10.
4. air-conditioning hot-gas bypass electromagnetic valve control method according to claim 2, which is characterized in that A2 >=7 DEG C, H2 >=
60Hz, B2 >=60 DEG C, C2 >=15 DEG C, D2 >=15 DEG C, E2 ＜ 8.
5. a kind of air-conditioning hot-gas bypass electromagnetic valve controlling system includes the bypass electricity opened and disconnected for controlling hot-gas bypass
Magnet valve and conditioning control unit for controlling the bypass solenoid valve, which is characterized in that the conditioning control unit includes electricity
Magnet valve Open control module (100) and solenoid valve closing control module (200),
The solenoid valve Open control module (100), for when meeting bypass solenoid valve unlocking condition, the side to be opened in control
Three-way electromagnetic valve；
The solenoid valve closing control module (200), for when meeting bypass solenoid valve closedown condition, the side to be closed in control
Three-way electromagnetic valve；
In the solenoid valve Open control module (100), the bypass solenoid valve unlocking condition is：
Outdoor environment temperature T4 is less than or equal to first environment temperature preset value A1, and compressor frequency INV is greater than or equal to
First frequency preset value H1；Compressor exhaust temperature T5 is less than or equal to first exhaust temperature preset value B1；
And meet in following conditions any one or several combinations：
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is less than or equal to the first fiducial temperature value C1；
The difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is less than or equal to the second fiducial temperature
Value D1；
The compression ratio Pr of compressor is greater than or equal to the first preset value E1, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc are pressure
The condensing pressure of contracting machine, Pe are the evaporating pressure of compressor.
6. air-conditioning hot-gas bypass electromagnetic valve controlling system according to claim 5, which is characterized in that the solenoid valve closes
It closes in control module (200), the bypass solenoid valve closedown condition is any one or several combinations in following conditions：
Outdoor environment temperature T4 is greater than or equal to second environment temperature preset value A2；
Compressor frequency INV is less than or equal to second frequency preset value H2；
Compressor exhaust temperature T5 is greater than or equal to second exhaust temperature preset value B2；
The difference of the compressor exhaust temperature T5 and condensation side tube temperature T3 is greater than or equal to third fiducial temperature value C2；
The difference of the compressor exhaust temperature T5 saturation temperature Tcs corresponding with condensing pressure is greater than or equal to the 4th fiducial temperature
Value D2；
The compression ratio Pr of compressor is less than or equal to the second preset value E2, wherein Pr=(Pc+0.1)/(Pe+0.1), Pc are pressure
The condensing pressure of contracting machine, Pe are the evaporating pressure of compressor.
7. air-conditioning hot-gas bypass electromagnetic valve controlling system according to claim 5 or 6, which is characterized in that 0 DEG C of ＜ A1 ＜
5 DEG C, 40Hz ＜ H1 ＜ 50Hz, 30 DEG C of 50 DEG C of ＜ B1 ＜, 0 DEG C of 10 DEG C of ＜ C1 ＜, 0 DEG C of 10 DEG C of ＜ D1 ＜, E1 ＞ 10.
8. air-conditioning hot-gas bypass electromagnetic valve controlling system according to claim 6, which is characterized in that A2 >=7 DEG C, H2 >=
60Hz, B2 >=60 DEG C, C2 >=15 DEG C, D2 >=15 DEG C, E2 ＜ 8.
9. a kind of air-conditioning, including air conditioning control device, which is characterized in that the air conditioning control device is provided with claim 5 to 8
Any one of them air-conditioning hot-gas bypass electromagnetic valve controlling system.
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| CN113218043A (en) * | 2021-04-30 | 2021-08-06 | 广东Tcl智能暖通设备有限公司 | Air conditioner control method and device, air conditioner and storage medium |
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| JP2006153418A (en) * | 2004-10-29 | 2006-06-15 | Daikin Ind Ltd | Refrigeration system |
| CN2837745Y (en) * | 2005-09-10 | 2006-11-15 | 海尔集团公司 | Air conditioner with decompression protection mechanism |
| CN100580346C (en) * | 2006-11-17 | 2010-01-13 | 海尔集团公司 | Air-conditioner defrosting method |
| CN201074936Y (en) * | 2007-08-15 | 2008-06-18 | 阿尔西制冷工程技术（北京）有限公司 | Refrigeration system capable of controlling refrigeration output |
| CN101178275A (en) * | 2007-12-05 | 2008-05-14 | 阿尔西制冷工程技术（北京）有限公司 | Refrigerating unit using electronic expansion valve to control temperature |
| KR100997284B1 (en) * | 2008-03-18 | 2010-11-29 | 엘지전자 주식회사 | Air conditioner and control method thereof |
| CN102721149A (en) * | 2012-05-08 | 2012-10-10 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN104110799B (en) * | 2013-05-30 | 2016-12-07 | 广东美的制冷设备有限公司 | The integrated control method of air-conditioner electric expansion valve and circuit |
| CN105423668B (en) * | 2015-12-09 | 2018-12-14 | 三菱重工海尔(青岛)空调机有限公司 | The control method of electric expansion valve |
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