CN105402848A - Variable displacement compressor system control method and device - Google Patents
Variable displacement compressor system control method and device Download PDFInfo
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- CN105402848A CN105402848A CN201510856587.0A CN201510856587A CN105402848A CN 105402848 A CN105402848 A CN 105402848A CN 201510856587 A CN201510856587 A CN 201510856587A CN 105402848 A CN105402848 A CN 105402848A
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- displacement compressor
- compressor system
- positive displacement
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- frequency
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 238000004134 energy conservation Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a variable displacement compressor system control method and device. The variable displacement compressor system control method provided by the method comprises the following steps: step S1, detecting an indoor environment temperature T, recording an initial indoor environment temperature T0, and controlling three cylinders of the variable displacement compressor system to run at a first frequency; and step S2, calculating a temperature change value of the indoor environment temperature T relative to the initial indoor environment temperature T0 and temperature difference between the indoor environment temperature T and a target temperature, and reducing the number of the running cylinders of the variable displacement compressor system and running frequency according to the temperature change value and the temperature difference. In the initial stage of starting of the device, the three cylinders of the variable displacement compressor system are controlled to run at high frequency, the indoor environment temperature can be changed quickly, when the temperature change value or difference between indoor temperature and the target temperature reaches a certain value, the number of the running cylinders and the running frequency of the variable displacement compressor system are reduced in time, and the circumstance that the three cylinders always run at high frequency is avoided, so that more energy is saved during running of the variable displacement compressor system.
Description
Technical field
The present invention relates to compressor assembly control field, in particular to a kind of positive displacement compressor system control method and control device.
Background technology
At present because of the energy and environmental problem more and more outstanding, north heating adopts collective's heating, and can burn the low-grade energies such as a large amount of coals or natural gas, exacerbates atmosphere pollution and energy resource consumption.If adopt air source heat pump heat supply, can greatly alleviate above problem.But because north temperature in winter is very low, ordinary hot heat pump heating amount and efficiency reduce greatly, have a strong impact on the application of heat pump.Based on above reason, positive displacement compressor arises at the historic moment.According to different operating mode load by adjustment different compressors volumetric ratio, thus reach the requirement of different heating capacity.
Current positive displacement compressor is divided into two cylinder single stage compress or three cylinder Two-stage Compressions.When three cylinders run, discharge capacity is large, the high same power of ability is also very high, so need to control for three cylinder actual motions are energy-conservation, so that the demand that can meet ability also can meet the few effect of power consumption.
Summary of the invention
The present invention aims to provide a kind of more energy-conservation positive displacement compressor system control method and control device.
The invention provides a kind of positive displacement compressor system control method, method comprises: step S1: detect indoor environment temperature T, and record initial indoor environment temperature T0, and three cylinders controlling positive displacement compressor system operate in first frequency; Step S2: calculate the temperature change value of indoor environment temperature T-phase to initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and the operation cylinder number and the running frequency that reduce positive displacement compressor system according to temperature change value and temperature gap.
Further, step S2 comprises: when temperature change value is greater than the first preset value, and the running frequency controlling positive displacement compressor system reduces to second frequency by first frequency; Or when temperature gap is less than the second preset value, the twin-tub that is switched to controlling positive displacement compressor system runs, and running frequency is reduced to the 3rd frequency gradually by second frequency and runs.
Further, the first preset value is 2 DEG C to 4 DEG C, and the second preset value is 1 DEG C to 2 DEG C.
Further, the method also comprises, and before step S1, detects the mode of operation of positive displacement compressor system.
Present invention also offers a kind of positive displacement compressor system control device, device comprises: initial control module, and for detecting indoor environment temperature T, and record initial indoor environment temperature T0, three cylinders controlling positive displacement compressor system operate in first frequency; Regulable control module, for calculating the temperature change value of indoor environment temperature T-phase to initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and reduce operation cylinder number and the running frequency of positive displacement compressor system according to temperature change value and temperature gap.
Further, regulable control module comprises: the first control unit, and for when temperature change value is greater than the first preset value, the running frequency controlling positive displacement compressor system reduces to second frequency by first frequency; Second control unit, for when temperature gap is less than the second preset value, the twin-tub that is switched to controlling positive displacement compressor system runs, and running frequency is reduced to the 3rd frequency gradually by second frequency and runs.
Further, the first preset value is 2 DEG C to 4 DEG C, and the second preset value is 1 DEG C to 2 DEG C.
Further, control device also comprises mode detection module, for detecting the mode of operation of positive displacement compressor system.
According to positive displacement compressor system control method of the present invention and control device, at the beginning of startup, three cylinders controlling positive displacement compressor system operate in high frequency, indoor environment temperature can be changed fast, when temperature change value or indoor temperature distance objective temperature reach certain value, the operation cylinder number of timely reduction positive displacement compressor system and running frequency, avoid three cylinder high frequencies always to run, thus make positive displacement compressor system cloud gray model more energy-conservation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the principle schematic according to positive displacement compressor system control method of the present invention;
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, according to positive displacement compressor system control method of the present invention, the method comprises: step S1: detect indoor environment temperature T, and record initial indoor environment temperature T0, and three cylinders controlling positive displacement compressor system operate in first frequency; Step S2: calculate the temperature change value of indoor environment temperature T-phase to initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and the operation cylinder number and the running frequency that reduce positive displacement compressor system according to temperature change value and temperature gap.The present invention is by the beginning of startup, three cylinders controlling positive displacement compressor system operate in high frequency, indoor environment temperature can be changed fast, when temperature change value or indoor temperature distance objective temperature reach certain value, the operation cylinder number of timely reduction positive displacement compressor system and running frequency, avoid three cylinder high frequencies always to run, thus make positive displacement compressor system cloud gray model more energy-conservation.
Preferably, step S2 comprises: when temperature change value is greater than the first preset value, and the running frequency controlling positive displacement compressor system reduces to second frequency by first frequency; Namely after temperature change value reaches certain value, reduce the running frequency of positive displacement compressor system, reduce temperature fall off rate, reduce energy consumption.When temperature gap is less than the second preset value, the twin-tub that is switched to controlling positive displacement compressor system runs, running frequency is reduced to the 3rd frequency gradually by second frequency and runs, also namely when indoor environment temperature soon reaches target temperature, reduce running frequency and cylinder number, adopt low-power to make indoor environment temperature maintain target temperature annex, effectively can reduce energy consumption.Usually, the first preset value is 2 DEG C to 4 DEG C, and the second preset value is 1 DEG C to 2 DEG C.
Particularly, composition graphs 1 describes positive displacement compressor system control method of the present invention in detail:
At the beginning of startup, detect the mode of operation of positive displacement compressor system, when mode of operation is refrigerating operaton, particularly under worst hot case: 1, start three cylinders most and run, running frequency, at high frequency, can realize fast-refrigerating; 2, when indoor environment temperature reduces about 2-4 DEG C, running frequency changes intermediate frequency into and runs, and refrigerating capacity declines, but can ensure indoor environment temperature continuous decrease (decrease speed slows down relatively); 3, when indoor environment temperature is from user's design temperature difference about 1-2 DEG C, switch to twin-tub to run, running frequency is reduced to low-frequency operation gradually by intermediate frequency, effectively can ensure that indoor environment temperature maintains near target temperature, also can reduce energy consumption effectively.
When mode of operation is heating operation, time special under ultralow-temperature operation conditions: 1, start three cylinders most and run, running frequency runs high frequency, can realize heating fast; 2, when indoor environment temperature raises about 2-4 DEG C, running frequency changes intermediate frequency into and runs, and heating capacity can decrease, but still can ensure that indoor environment temperature rises (rate of climb slows down relatively) with certain speed; 3, when indoor environment temperature is from user's design temperature difference about 1-2 DEG C, twin-tub is switched to run, running frequency is reduced to low-frequency operation gradually by intermediate frequency, effectively can ensure that indoor environment temperature reaches and maintain near target temperature, also effectively can reduce energy consumption.
Present invention also offers a kind of positive displacement compressor system control device, this device comprises: initial control module, and for detecting indoor environment temperature T, and record initial indoor environment temperature T0, three cylinders controlling positive displacement compressor system operate in first frequency; Regulable control module, for calculating the temperature change value of indoor environment temperature T-phase to initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and reduce operation cylinder number and the running frequency of positive displacement compressor system according to temperature change value and temperature gap.
The present invention by initial control module startup at the beginning of, three cylinders controlling positive displacement compressor system operate in high frequency, indoor environment temperature can be changed fast, when temperature change value or indoor temperature distance objective temperature reach certain value, regulable control module can reduce operation cylinder number and the running frequency of positive displacement compressor system in time, avoid three cylinder high frequencies always to run, thus make positive displacement compressor system cloud gray model more energy-conservation.
Particularly, regulable control module comprises the first control unit, for when temperature change value is greater than the first preset value, the running frequency controlling positive displacement compressor system reduces to second frequency by first frequency, namely after temperature change value reaches certain value, reduce the running frequency of positive displacement compressor system, reduce temperature fall off rate, reduce energy consumption.Regulable control module also comprises the second control unit, and for when temperature gap is less than the second preset value, the twin-tub that is switched to controlling positive displacement compressor system runs, and running frequency is reduced to the 3rd frequency gradually by second frequency and runs.Also namely when indoor environment temperature soon reaches target temperature, reduce running frequency and cylinder number, adopt low-power to make indoor environment temperature maintain target temperature annex, effectively can reduce energy consumption.In control device, the setting of design parameter, corresponding with control method, do not repeating.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
According to positive displacement compressor system control method of the present invention and control device, at the beginning of startup, three cylinders controlling positive displacement compressor system operate in high frequency, indoor environment temperature can be changed fast, when temperature change value or indoor temperature distance objective temperature reach certain value, the operation cylinder number of timely reduction positive displacement compressor system and running frequency, avoid three cylinder high frequencies always to run, thus make positive displacement compressor system cloud gray model more energy-conservation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a positive displacement compressor system control method, is characterized in that, described method comprises:
Step S1: detect indoor environment temperature T, and record initial indoor environment temperature T0, three cylinders controlling described positive displacement compressor system operate in first frequency;
Step S2: calculate indoor environment temperature T-phase to the described temperature change value of initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and reduce operation cylinder number and the running frequency of described positive displacement compressor system according to described temperature change value and described temperature gap.
2. positive displacement compressor system control method according to claim 1, is characterized in that,
Described step S2 comprises: when described temperature change value is greater than the first preset value, and the running frequency controlling described positive displacement compressor system reduces to second frequency by first frequency; Or when described temperature gap is less than the second preset value, the twin-tub that is switched to controlling described positive displacement compressor system runs, and running frequency is reduced to the 3rd frequency gradually by second frequency and runs.
3. positive displacement compressor system control method according to claim 2, is characterized in that,
Described first preset value is 2 DEG C to 4 DEG C, and described second preset value is 1 DEG C to 2 DEG C.
4. positive displacement compressor system control method according to any one of claim 1 to 3, is characterized in that, described method also comprises, and before step S1, detects the mode of operation of described positive displacement compressor system.
5. a positive displacement compressor system control device, is characterized in that, described device comprises:
Initial control module, for detecting indoor environment temperature T, and record initial indoor environment temperature T0, three cylinders controlling described positive displacement compressor system operate in first frequency;
Regulable control module, for calculating indoor environment temperature T-phase to the described temperature change value of initial indoor environment temperature T0 and the temperature gap of indoor environment temperature T and target temperature, and reduce operation cylinder number and the running frequency of described positive displacement compressor system according to described temperature change value and described temperature gap.
6. positive displacement compressor system control device according to claim 5, is characterized in that, described regulable control module comprises:
First control unit, for when described temperature change value is greater than the first preset value, the running frequency controlling described positive displacement compressor system reduces to second frequency by first frequency;
Second control unit, for when described temperature gap is less than the second preset value, the twin-tub that is switched to controlling described positive displacement compressor system runs, and running frequency is reduced to the 3rd frequency gradually by second frequency and runs.
7. positive displacement compressor system control device according to claim 6, is characterized in that,
Described first preset value is 2 DEG C to 4 DEG C, and described second preset value is 1 DEG C to 2 DEG C.
8. the positive displacement compressor system control device according to any one of claim 5 to 7, is characterized in that, described control device also comprises mode detection module, for detecting the mode of operation of described positive displacement compressor system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856587.0A CN105402848B (en) | 2015-11-27 | 2015-11-27 | Positive displacement compressor system control method and control device |
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|---|---|---|---|
| CN201510856587.0A CN105402848B (en) | 2015-11-27 | 2015-11-27 | Positive displacement compressor system control method and control device |
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| CN105402848A true CN105402848A (en) | 2016-03-16 |
| CN105402848B CN105402848B (en) | 2018-12-25 |
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| CN201510856587.0A Active CN105402848B (en) | 2015-11-27 | 2015-11-27 | Positive displacement compressor system control method and control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928142A (en) * | 2016-04-29 | 2016-09-07 | 青岛海尔空调器有限总公司 | Air conditioner temperature control method |
| CN106885348A (en) * | 2017-04-13 | 2017-06-23 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method |
| CN109539648A (en) * | 2018-11-02 | 2019-03-29 | 珠海格力电器股份有限公司 | A kind of compressor of refrigeration equipment adds Unloading Control method and server |
| CN110779248A (en) * | 2019-10-12 | 2020-02-11 | 珠海格力电器股份有限公司 | Compressor control method, controller and air conditioning unit |
| CN111219880A (en) * | 2019-12-02 | 2020-06-02 | 珠海格力电器股份有限公司 | Three-cylinder compressor mode switching method and device |
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| CN109539648A (en) * | 2018-11-02 | 2019-03-29 | 珠海格力电器股份有限公司 | A kind of compressor of refrigeration equipment adds Unloading Control method and server |
| CN110779248A (en) * | 2019-10-12 | 2020-02-11 | 珠海格力电器股份有限公司 | Compressor control method, controller and air conditioning unit |
| CN111219880A (en) * | 2019-12-02 | 2020-06-02 | 珠海格力电器股份有限公司 | Three-cylinder compressor mode switching method and device |
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| CN105402848B (en) | 2018-12-25 |
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Effective date of registration: 20190419 Address after: No. six, Qianshan Jinji West Road, Zhuhai, Guangdong Province Co-patentee after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Patentee after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Address before: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Patentee before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI |
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