CN105091427B - The control method and air conditioner of Two-stage Compression second vapor injection system electronic expansion valve - Google Patents
The control method and air conditioner of Two-stage Compression second vapor injection system electronic expansion valve Download PDFInfo
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- CN105091427B CN105091427B CN201510481268.6A CN201510481268A CN105091427B CN 105091427 B CN105091427 B CN 105091427B CN 201510481268 A CN201510481268 A CN 201510481268A CN 105091427 B CN105091427 B CN 105091427B
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- expansion valve
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- injection system
- vapor injection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The present invention discloses the control method and air conditioner of a kind of Two-stage Compression second vapor injection system electronic expansion valve, and the control method of Two-stage Compression second vapor injection system electronic expansion valve is the following steps are included: step 1, set the target value T of the first parameter1s, the second parameter target value T2S, the first difference DELTA T1With the second difference DELTA T1；Step 2, the actual value T for obtaining the first parameter1With the actual value T of the second parameter2；Step 3 compares | T1s‑T1| with the first difference DELTA T1Between size, and adjust according to the comparison result of the first parameter and the variable quantity of the first parameter the aperture of hiigh pressure stage electric expansion valve；Compare | T2s‑T2| with the second difference DELTA T2Between size, and adjust according to the comparison result of the second parameter and the variable quantity of the second parameter the aperture of low-pressure stage electric expansion valve.It applies the technical scheme of the present invention, the stability control of Two-stage Compression second vapor injection system may be implemented.
Description
Technical field
The present invention relates to air-conditioning technical fields, expand in particular to a kind of Two-stage Compression second vapor injection system electronic
The control method and air conditioner of valve.
Background technique
In single-stage compression refrigeration system, the throttle part of system only one, component electronic expansion valve opening at this time
Control is controlled using delivery temperature or discharge superheat as target component, is easier to realize stability contorting.For
For Two-stage Compression second vapor injection system, since system throttles with two-stage, while two throttling sets have certain coupling
Property, it is necessary to two nuclear one-stage throttling devices, selected target parameter is decoupled and can effectively be controlled respectively.
In the electronic expansion valve controls of existing Two-stage Compression second vapor injection system, mostly use fixed hiigh pressure stage electronics swollen
Swollen valve opening, and be that control target component controls low-pressure stage electric expansion valve with hiigh pressure stage delivery temperature.In the control
In method, since low-pressure stage electric expansion valve not only influences to flow through the refrigerant mass fluxes of evaporator, has an effect on and flow through tonifying Qi
The refrigerant mass fluxes of branch, therefore system stable operation is relatively difficult to realize using the control method.
Summary of the invention
The control method and air-conditioning of a kind of Two-stage Compression second vapor injection system electronic expansion valve are provided in the embodiment of the present invention
Device, to achieve the purpose that realize system stable operation.
To achieve the above object, the embodiment of the present invention provides a kind of control of Two-stage Compression second vapor injection system electronic expansion valve
Method processed, comprising the following steps: step 1, the target value T for setting the first parameter1s, the second parameter target value T2S, the first difference
ΔT1With the second difference DELTA T1；Step 2, the actual value T for obtaining the first parameter1With the actual value T of the second parameter2；Step 3 compares
|T1s-T1| with the first difference DELTA T1Between size, and according to the comparison result of the first parameter and the variable quantity of the first parameter
To adjust the aperture of hiigh pressure stage electric expansion valve；Compare | T2s-T2| with the second difference DELTA T2Between size, and according to second ginseng
The variable quantity of several comparison result and the second parameter adjusts the aperture of low-pressure stage electric expansion valve.
Further, step 3 includes: to work as | T1s-T1|≤ΔT1When, keep the aperture of hiigh pressure stage electric expansion valve constant.
Further, step 3 includes: to work as | T1s-T1|≥ΔT1, and T1s> T1When, increase hiigh pressure stage electric expansion valve
Opening size.
Further, step 3 includes: to work as | T1s-T1|≥ΔT1, and T1s< T1When, reduce hiigh pressure stage electric expansion valve
Opening size.
Further, step 3 includes: to work as | T2s-T2|≤ΔT2When, keep the aperture of low-pressure stage electric expansion valve constant.
Further, step 3 includes: to work as | T2s-T2|≥ΔT2, and T2s> T2When, increase low-pressure stage electric expansion valve
Opening size.
Further, step 3 includes: to work as | T2s-T2|≥ΔT2, and T2s< T2When, reduce low-pressure stage electric expansion valve
Opening size.
Further, the first parameter is the interim temperature value of flash evaporation, and the second parameter is that the low-pressure stage of compressor is vented temperature
Degree, low-pressure stage suction superheat or hiigh pressure stage delivery temperature.
Further, the first parameter is the hiigh pressure stage delivery temperature of compressor, and the second parameter is that the low-pressure stage of compressor is arranged
Temperature degree or low-pressure stage suction superheat.
The present invention also provides a kind of air conditioner, including Two-stage Compression second vapor injection system, Two-stage Compression second vapor injection systems
System can be controlled using the control method of above-mentioned Two-stage Compression second vapor injection system electronic expansion valve.
It applies the technical scheme of the present invention, by Two-stage Compression second vapor injection system mesohigh grade electric expansion valve and low
It arbitrarily downgrades the decoupling control of electric expansion valve, the stability control of Two-stage Compression second vapor injection system may be implemented, meanwhile, by right
The reasonable setting and control of the first parameter and the second parameter of hiigh pressure stage electric expansion valve and low-pressure stage electric expansion valve, Neng Goushi
Existing Two-stage Compression second vapor injection system real time execution is in optimum state.
Detailed description of the invention
Fig. 1 is the control method embodiment mesohigh grade electronics of Two-stage Compression second vapor injection system electronic expansion valve of the present invention
The control method of expansion valve；
Fig. 2 is the control method embodiment mesolow grade electronics of Two-stage Compression second vapor injection system electronic expansion valve of the present invention
The control method of expansion valve；
Fig. 3 is the structural schematic diagram of the air condition of that present invention embodiment.
Description of symbols: 101, double-stage compressor；102, four-way valve；103, outdoor heat exchanger；104, hiigh pressure stage electronics
Expansion valve；105, flash evaporation；106, low-pressure stage electric expansion valve；107, gas tonifying branch and solenoid valve；108, indoor heat exchanger.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
As depicted in figs. 1 and 2, the embodiment of the invention provides a kind of Two-stage Compression second vapor injection system electronic expansion valves
Control method, comprising the following steps:
Step 1, the target value T for setting the first parameter1s, the second parameter target value T2S, the first difference DELTA T1It is poor with second
It is worth Δ T1。
Step 2, the actual value T for obtaining the first parameter1With the actual value T of the second parameter2。
Step 3 compares | T1s-T1| with the first difference DELTA T1Between size, and according to the comparison result of the first parameter with
And first the variable quantity of parameter adjust the aperture of hiigh pressure stage electric expansion valve.Wherein the variable quantity of the first parameter is the first parameter
Variable quantity in unit time or update cycle.Compare simultaneously | T2s-T2| with the second difference DELTA T2Between size, and according to
The comparison result of second parameter and the variable quantity of the second parameter adjust the aperture of low-pressure stage electric expansion valve.Wherein, second
The variable quantity of parameter is the variable quantity in the second Parameter units time or update cycle.
Pass through the decoupling to Two-stage Compression second vapor injection system mesohigh grade electric expansion valve and low-pressure stage electric expansion valve
Control, may be implemented the stability control of Two-stage Compression second vapor injection system, meanwhile, by hiigh pressure stage electric expansion valve and low
The first parameter of electric expansion valve of arbitrarily downgrading and the reasonable of the second parameter are arranged and control, and can be realized Two-stage Compression second vapor injection system
Real time execution unite in optimum state.
In first embodiment of the invention, the first parameter is the medium temperature of flash evaporation, and the second parameter is the low pressure of compressor
Grade delivery temperature.The specific control method of first embodiment is as follows:
Firstly, the target value T of setting medium temperature1s, compressor low pressure exhaust temperature target value T2SAnd first is poor
It is worth Δ T1With the second difference DELTA T1.Secondly, obtaining the actual value T of medium temperature by temperature sensor1With the low-pressure stage of compressor
The actual value T of delivery temperature2Size.Wherein, the actual value T of above-mentioned low-pressure stage delivery temperature2Size and compressor low pressure
The target value T of delivery temperature2SIt is required to obtain by calculating.
Then, compare | T1s-T1| with the first difference DELTA T1Between size and compare | T2s-T2| with the second difference DELTA T2
Between size.According to comparison result, following several regulative modes are generated, wherein the regulative mode of hiigh pressure stage electric expansion valve is such as
Under:
(1) as | T1s-T1|≤ΔT1When, think that hiigh pressure stage electric expansion valve has reached convergence state at this time, it should be no longer
Hiigh pressure stage electric expansion valve is adjusted, therefore keeps the aperture of hiigh pressure stage electric expansion valve constant.It returns to step simultaneously
2。
(2) as | T1s-T1|≥ΔT1, and T1s> T1When, it is believed that the opening size of hiigh pressure stage electric expansion valve needs to increase,
Therefore control hiigh pressure stage electric expansion valve increases itself opening size, when aperture increases to setting value, returns to step 2.
(3) as | T1s-T1|≥ΔT1, and T1s< T1When, it is believed that the opening size of hiigh pressure stage electric expansion valve needs to reduce,
Therefore control hiigh pressure stage electric expansion valve reduces itself opening size, when aperture is decreased to setting value, returns to step 2.
The regulative mode of low-pressure stage electric expansion valve is as follows:
(1) as | T2s-T2|≤ΔT2When, think that low-pressure stage electric expansion valve has reached convergence state at this time, it should be no longer
Low-pressure stage electric expansion valve is adjusted, therefore keeps the aperture of low-pressure stage electric expansion valve constant.It returns to step simultaneously
2。
(2) as | T2s-T2|≥ΔT2, and T2s> T2When, it is believed that the opening size of low-pressure stage electric expansion valve needs to increase,
Therefore control low-pressure stage electric expansion valve increases itself opening size, when aperture increases to setting value, returns to step 2.
(3) step 3 includes: to work as | T2s-T2|≥ΔT2, and T2s< T2When, it is believed that the aperture of low-pressure stage electric expansion valve is big
It is small to need to reduce, therefore control low-pressure stage electric expansion valve and reduce itself opening size, when aperture is decreased to setting value, return
Execute step 2.
The present invention also provides following embodiments: in second embodiment of the invention, the first parameter is the centre of flash evaporation
Temperature value, the second parameter are the low pressure air suction degree of superheat of compressor.In the third embodiment of the present invention, the first parameter is shwoot
The interim temperature value of device, the second parameter are the hiigh pressure stage delivery temperature of compressor.In the fourth embodiment of the present invention, the first ginseng
Number is the hiigh pressure stage delivery temperature of compressor, and the second parameter is the low-pressure stage delivery temperature of compressor.It is real the of the invention the 5th
It applies in example, the first parameter is the hiigh pressure stage delivery temperature of compressor, and the second parameter is the low-pressure stage suction superheat of compressor.Its
In, in above-described embodiment, in addition to the selection of the first parameter and the second parameter is different and related setting value is different, other are with the
It is identical in one embodiment.
It should be noted that above-mentioned related setting value includes the target value T of the first parameter1s, the second parameter target value
T2S, the first difference DELTA T1With the second difference DELTA T1。
Further, the control method of above-mentioned Two-stage Compression second vapor injection system electronic expansion valve is equally applicable to hiigh pressure stage
The electric expansion valve control for the Two-stage Compression second vapor injection system that low-pressure stage is throttled using electric expansion valve using capillary-compensated
Method processed.
As shown in figure 3, the present invention also provides a kind of air conditioner, including Two-stage Compression second vapor injection system, Two-stage Compression
Second vapor injection system includes double-stage compressor 101, four-way valve 102, outdoor heat exchanger 103, hiigh pressure stage electric expansion valve 104, dodges
Send out device 105, low-pressure stage electric expansion valve 106, indoor heat exchanger 108, gas tonifying branch and solenoid valve 107.It is mended among Two-stage Compression
Gas system further includes the outdoor heat exchanger temperature temperature sensing package (not indicating) and outdoor environment temperature sense being arranged on outdoor heat exchanger
Thermometer bulb (not indicating), the indoor heat exchanger temperature temperature sensing package (not indicating) and indoor environment temperature sense being arranged on heat exchanger indoors
Thermometer bulb (not indicating), the compressor air suction temperature temperature sensing package (not indicating) that compressor suction duct side and exhaust pipe side are set and row
Temperature degree temperature sensing package (not indicating), the medium temperature temperature sensing package (not indicating) being arranged on flash evaporation.Wherein, above-mentioned Two-stage Compression
Electric expansion valve in second vapor injection system can be swollen using the Two-stage Compression second vapor injection system electronic in the embodiment of the present invention
The control method of swollen valve is controlled.
It should be noted that above-mentioned first parameter and the second parameter can be by being arranged multiple senses in portion in the air conditioner
Thermometer bulb directly or indirectly obtains.
It certainly, is the preferred embodiment of the present invention above.It should be pointed out that for those skilled in the art
For, without departing from the basic principles of the invention, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of control method of Two-stage Compression second vapor injection system electronic expansion valve, which comprises the following steps:
Step 1, the target value T for setting the first parameter1s, the second parameter target value T2S, the first difference DELTA T1With the second difference DELTA
T1；
Step 2, the actual value T for obtaining the first parameter1With the actual value T of the second parameter2；
Step 3 compares | T1s-T1| with the first difference DELTA T1Between size, and according to the comparison result of the first parameter and
The variable quantity of first parameter adjusts the aperture of hiigh pressure stage electric expansion valve；Compare | T2s-T2| with the second difference DELTA T2Between
Size, and opening for low-pressure stage electric expansion valve is adjusted according to the comparison result of the second parameter and the variable quantity of the second parameter
Degree；
Wherein, first parameter is the interim temperature value of flash evaporation, and second parameter is that the low-pressure stage of compressor is vented temperature
Degree, low-pressure stage suction superheat or hiigh pressure stage delivery temperature；Alternatively,
First parameter is the hiigh pressure stage delivery temperature of compressor, and second parameter is the low-pressure stage delivery temperature of compressor
Or low-pressure stage suction superheat.
2. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T1s-T1|≤ΔT1When, keep the aperture of the hiigh pressure stage electric expansion valve constant.
3. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T1s-T1|≥ΔT1, and T1s>T1When, increase the opening size of the hiigh pressure stage electric expansion valve.
4. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T1s-T1|≥ΔT1, and T1s<T1When, reduce the opening size of the hiigh pressure stage electric expansion valve.
5. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T2s-T2|≤ΔT2When, keep the aperture of the low-pressure stage electric expansion valve constant.
6. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T2s-T2|≥ΔT2, and T2s> T2When, increase the opening size of the low-pressure stage electric expansion valve.
7. the control method of Two-stage Compression second vapor injection system electronic expansion valve according to claim 1, which is characterized in that
Step 3 includes: to work as | T2s-T2|≥ΔT2, and T2s< T2When, reduce the opening size of the low-pressure stage electric expansion valve.
8. a kind of air conditioner, including Two-stage Compression second vapor injection system, which is characterized in that the Two-stage Compression second vapor injection system
The controlling party of Two-stage Compression second vapor injection system electronic expansion valve according to any one of claim 1 to 7 can be used
Method is controlled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106196482B (en) * | 2016-07-28 | 2019-02-15 | 广东美芝制冷设备有限公司 | The control method of air-conditioning system |
| CN106969563A (en) * | 2017-03-22 | 2017-07-21 | 美的集团武汉制冷设备有限公司 | Compression set, temprature control method and air conditioner with second vapor injection |
| CN107192158B (en) * | 2017-06-12 | 2023-07-14 | 珠海格力电器股份有限公司 | Enthalpy increasing system of air conditioner and fixed-frequency air conditioner with enthalpy increasing system |
| CN108286512B (en) * | 2018-04-18 | 2024-02-09 | 格力电器（芜湖）有限公司 | Temperature regulating system, and two-stage compressor air supplementing device and control method thereof |
| CN109094324B (en) * | 2018-07-17 | 2021-09-14 | 蔚来(安徽)控股有限公司 | Automobile, air conditioning system and control method thereof |
| CN112113373B (en) * | 2019-06-21 | 2022-05-13 | 浙江盾安机电科技有限公司 | Control method of air conditioning system |
| JP7403984B2 (en) * | 2019-07-26 | 2023-12-25 | 株式会社鷺宮製作所 | Cooling system |
| CN110925940B (en) * | 2019-11-08 | 2020-11-13 | 珠海格力电器股份有限公司 | Air supply control method of two-stage compression air supply air conditioning system |
| CN115202196B (en) * | 2022-09-13 | 2022-12-02 | 北京世纪隆博科技有限责任公司 | Pressure split-range control method and system, storage medium and processor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203572113U (en) * | 2013-10-31 | 2014-04-30 | 海尔集团公司 | Air conditioner and air supplementing and enthalpy adding system of air conditioner |
| CN203857702U (en) * | 2014-04-18 | 2014-10-01 | 青岛海信日立空调***有限公司 | Air-supplying enthalpy-adding air conditioning system |
| CN104566839A (en) * | 2015-02-02 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method for enhanced vapor injection of air conditioner system |
| CN104596166A (en) * | 2013-10-31 | 2015-05-06 | 海尔集团公司 | Air conditioner and air supplying and enthalpy adding method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294346A (en) * | 2002-03-29 | 2003-10-15 | Toshiba Corp | Refrigerator |
-
2015
- 2015-08-07 CN CN201510481268.6A patent/CN105091427B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203572113U (en) * | 2013-10-31 | 2014-04-30 | 海尔集团公司 | Air conditioner and air supplementing and enthalpy adding system of air conditioner |
| CN104596166A (en) * | 2013-10-31 | 2015-05-06 | 海尔集团公司 | Air conditioner and air supplying and enthalpy adding method thereof |
| CN203857702U (en) * | 2014-04-18 | 2014-10-01 | 青岛海信日立空调***有限公司 | Air-supplying enthalpy-adding air conditioning system |
| CN104566839A (en) * | 2015-02-02 | 2015-04-29 | 珠海格力电器股份有限公司 | Control method for enhanced vapor injection of air conditioner system |
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