CN105020953B - control method of compressor unit - Google Patents
control method of compressor unit Download PDFInfo
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- CN105020953B CN105020953B CN201510323716.XA CN201510323716A CN105020953B CN 105020953 B CN105020953 B CN 105020953B CN 201510323716 A CN201510323716 A CN 201510323716A CN 105020953 B CN105020953 B CN 105020953B
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- compressor
- water temperature
- running time
- leaving water
- accumulated running
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- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 230000009194 climbing Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 210000000056 organ Anatomy 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The embodiment of the invention discloses a control method of a compressor unit. The method comprises the following steps: detecting the accumulated running time of each compressor in the compressor unit; and executing start-stop control on the compressor according to the accumulated running time of the compressor. The control method of the compressor unit provided by the embodiment of the invention realizes the balance of the running time among the compressors in the compressor unit.
Description
Technical field
The present embodiments relate to heat pump assembly technical field more particularly to a kind of control methods of compressor set.
Background technology
In large-sized wind cooling handpiece Water Chilling Units, due to unit cold is big, single compressor can not meet cold requirement,
Multiple compressors is often used to design.For multi-compressor unit, there are two types of the Load Regulation modes mainly used.First
Planting load regulation mode is：Compressor starts one by one, and a upper system compressors start to after being fully loaded with, next system pressure
Contracting machine is restarted；Second of load regulation mode be：Compressor starts simultaneously, and the operation between compressor is without interrelated work
With.
For both control modes all it is possible that occurring, complete machine is not in energy-efficient operating status, can not equal compression
Machine run time may influence unit operation reliability, particularly born in user there are one of high frequent start-stop
When lotus is fluctuated.
The content of the invention
In view of this, the embodiment of the present invention proposes a kind of control method of compressor set, to balance in the compressor set
The run time of each compressor.
An embodiment of the present invention provides a kind of control method of compressor set, the described method includes：
Detect the accumulated running time of each compressor in the compressor set；
Start-up and shut-down control is performed to the compressor according to the accumulated running time of the compressor.
The control method of compressor set provided in an embodiment of the present invention, by detecting each compressor in the compressor set
Run time and start-up and shut-down control is performed to the compressor according to the run time of the compressor, it is achieved thereby that pressure
The balance of run time in contracting unit between each compressor.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the flow chart of the control method for the compressor set that first embodiment of the invention provides；
Fig. 2 is the flow chart of the control method for the compressor set that second embodiment of the invention provides；
Fig. 3 is the flow chart of the control method for the compressor set that third embodiment of the invention provides；
Fig. 4 is the flow chart of the control method for the compressor set that fourth embodiment of the invention provides；
Fig. 5 is the flow chart for the load regulation that a kind of preferred embodiment of fourth embodiment of the invention provides；
Fig. 6 is the flow chart for the load regulation that another preferred embodiment of fourth embodiment of the invention provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining the present invention rather than limitation of the invention.It also should be noted that for the ease of
It describes, part related to the present invention rather than full content is illustrated only in attached drawing.
First embodiment
Present embodiments provide a kind of technical solution of the control method of compressor set.In the technical scheme, the pressure
The control method of contracting unit includes：Detect the run time of each compressor in the compressor set；According to the compressor
Run time performs start-up and shut-down control to the compressor.
Referring to Fig. 1, the control method of the compressor set includes：
S11 detects the accumulated running time of each compressor in the compressor set.
The present embodiment is passed through by setting a central processing unit for compressor set described in the detection of this central processing unit
The accumulated running time of each compressor in compressor set.The accumulated running time be the compressor set in the on state
The accumulative run time of each compressor therein, also, the accumulated running time do not reset under normal circumstances.Only
Have when the compressor set is integrally out of service, the accumulated running time parameter just meeting of each compressor in the compressor set
It is cleared.
S12 performs start-up and shut-down control according to the accumulated running time of the compressor to the compressor.
It gets in the compressor set after the accumulated running time of each compressor, according to the accumulative operation got
Time performs start-up and shut-down control to the compressor.For example, when the accumulated running time of a compressor is more than other compressors
During accumulated running time, this compressor should preferentially be allowed to shut down.For another example when the accumulated running time of a compressor
When being significantly less than the accumulated running time of other compressors, this compressor should preferentially be allowed to start running.
In addition, after open command or halt instruction are sent to the compressor in the compressor set, it is also necessary to
See this compressor whether meet entry condition either stop condition could finally allow this compressor start or stop.
That is, performing start-up and shut-down control to the compressor according to the accumulated running time of the compressor specifically may include：
It is preferential to start accumulated running time short compressor when meeting entry condition；Or when meeting stop condition, preferential close is tired out
Count the compressor of long operational time.
Preferably, the entry condition includes：The leaving water temperature of the compressor is more than the leaving water temperature upper limit threshold of setting
Value or actual water temperature change rate are more than water temperature change rate given threshold, and have passed through apart from last compression machine start-up operation
The opening operation time interval of setting.Refer to the water temperature obtained from the water outlet measurement of compressor set during the leaving water temperature.Institute
State the change rate that actual water temperature change rate refers to the leaving water temperature.In addition, the entry condition and the stop condition are applicable in
With each compressor in the compressor set.The leaving water temperature upper limit threshold is provided by following formula：
Tmax=Ts+(ΔT÷N) (1)
Wherein, TmaxIt is the leaving water temperature upper limit threshold, TsBe refrigeration water outlet set temperature, Δ T compressor opening temperatures
Deviation, N are the number of compressors in compressor set.
It can be seen that, the leaving water temperature upper limit threshold is related to number of compressors, such parameter setting from formula (1)
So that the leaving water temperature upper limit threshold is related to the number of compressors in the compressor set, can overcome in compressor set
The phenomenon that high frequent start and stop.
The actual water temperature change rate is provided by formula (2)：
λ=(Ta (n)-Ta (n-1)/Δ t) (2)
Wherein, λ is actual water temperature change rate, and Ta (n) is the leaving water temperature on n-th of sampled point, and Ta (n-1) is (n-1)th
Leaving water temperature on a sampled point, Δ t are the time intervals between n-th of sampled point and (n-1)th sampled point.The water temperature becomes
For rate given threshold as the actual water temperature change rate, unit is all DEG C/min.
Preferably, the stop condition includes：The leaving water temperature of the compressor is less than the leaving water temperature lower limit threshold of setting
It is worth, and have passed through the shutoff operation time interval of setting apart from the closed operation of last compression organ.Further, it is described go out water temperature
Degree lower threshold is provided by equation below：
Tmin＜ Ts-1 (3)
Wherein, TminIt is the leaving water temperature lower threshold, Ts is the leaving water temperature of setting.
The present embodiment is by detecting in the compressor set run time of each compressor and according to the compressor
Run time to the compressor perform start-up and shut-down control, effectively in compressor set each compressor run time carry out
Balance improves the operational reliability of whole system.
Second embodiment
The present embodiment further provides the control method of compressor set based on the above embodiment of the present invention
A kind of technical solution.In the technical scheme, start and stop are performed to the compressor according to the accumulated running time of the compressor
Control includes：It is preferential to start accumulated running time short compressor when meeting entry condition；Or meeting stop condition
When, the preferential compressor for closing accumulated running time length.Further, according to the accumulated running time of the compressor to described
Compressor performs start-up and shut-down control and further includes：When meeting entry condition, if the accumulated running time of at least two compressors is identical,
It is preferential to start the forward compressor of title sequence；Or when meeting stop condition, if the accumulative operation of at least two compressors
Time is identical, preferential to close the forward compressor of title sequence.
Referring to Fig. 2, the control method of the compressor set includes：
S21 detects the accumulated running time of each compressor in the compressor set.
S22, it is preferential to start accumulated running time short compressor or stop item meeting when meeting entry condition
During part, the preferential compressor for closing accumulated running time length.
Specifically, when entry condition meets, first compression machine start-up operation is performed.In this second compression machine start-up operation
In, accumulated running time, a shortest compressor was preferentially started in unit.Correspondingly, when stop condition meets, perform
First compression machine stops operation.In this second compression machine stops operation, an accumulated running time longest compressor in unit
Preferentially stopped.
In above-mentioned start-up operation or stopping operation, if the situation that the accumulated running time of two compressors is identical,
Then according to the title of the compressor it is determined that the compressor for being activated or stopping.For example, in start-up operation, if there is
The accumulated running time of two compressors is identical, then the compressor that title sequence is forward in two compressors is selected, by this
Compressor starts.Correspondingly, in stopping operation, it is similary to select if there is the accumulated running time of two compressors is identical
The forward compressor of title sequence, this compressor is started in two compressors.
The present embodiment is long by preferentially starting accumulated running time short compressor or preferential stopping accumulated running time
Compressor, realize according to accumulated running time in compressor set each compressor operation control.
3rd embodiment
Present embodiments provide a kind of technical solution of the control method of compressor set.Referring to Fig. 3, the compressor set
Control method includes：
S31 judges whether to meet compressor unlocking condition, if so, S32 is performed, if it is not, performing S34.
S32 calculates compressor accumulated running time.
S33, accumulated running time short compressor are opened.
At this point, if the accumulated running time of two compressors is identical, the sequence of the low compressor of systematic naming method, i.e. title is forward
Compressor preferentially open.
S34 judges whether to meet compressor closedown condition, if so, execution S25, performs S27 if not.
S35 calculates the accumulated running time of compressor.
S36, the compressor of accumulated running time length are opened.
At this point, if the accumulated running time of two compressors is identical, the low compressor of systematic naming method is opened.
S37, the compressor having been switched on are carried out plus unloaded according to load, and the compression being not turned on performs S31.
The present embodiment adds up by the judgement to compressor unlocking condition or compressor closedown condition and to compressor
The calculating of run time realizes the balance of the run time in compressor set between different compressors.
Fourth embodiment
The present embodiment further provides the control method of compressor set based on the above embodiment of the present invention
A kind of technical solution.In the technical scheme, the control method of the compressor set further includes：According to each in the compressor set
The leaving water temperature parameter of a compressor carries out load regulation to the compressor.
Referring to Fig. 4, the control method of the compressor set includes：
S41 detects the accumulated running time of each compressor in the compressor set.
S42 performs start-up and shut-down control according to the accumulated running time of the compressor to the compressor.
According to the leaving water temperature parameter of each compressor in the compressor set, load tune is carried out to the compressor by S43
Section.
The leaving water temperature parameter can be leaving water temperature in itself or can be derived by by the leaving water temperature
Other parameter.
Referring to Fig. 5, it is preferred that according to the leaving water temperature parameter of each compressor in the compressor set, to the compression
Machine, which carries out load regulation, to be included：
S51, if the load deviation of the compressor is more than load deviation upper limit threshold, the compressor climbing loading.
The load deviation is provided by equation below：
Δ Q=Δ T1+ λ (4)
Wherein, Δ Q is the load deviation, and Δ T1 is the difference between actual leaving water temperature Ta and setting leaving water temperature Ts
Value, λ is actual water temperature change rate.Preferably, the load deviation upper limit threshold is set as 0.5.
S52, if the load deviation of the compressor is not more than load deviation lower threshold, the compressor climbing unloading.
Preferably, the load deviation upper limit threshold is set as -0.5.
S53, if the load deviation of the compressor is not more than the load deviation upper limit threshold, and more than the load
Lower limit of variation threshold value, the compressor climbing are kept.
Referring to Fig. 6, it is further preferred that according to the leaving water temperature parameter of each compressor in the compressor set, to institute
Stating compressor progress load regulation includes：
S61, if the load deviation of the compressor is more than load deviation upper limit threshold, the compressor climbing loading.
S62, if the load deviation of the compressor is not more than load deviation lower threshold, the compressor climbing unloading.
S63, if the load deviation of the compressor is not more than the load deviation upper limit threshold, and more than the load
Lower limit of variation threshold value, the compressor climbing are kept.
S64, when actual water temperature change rate is more than operation water temperature change rate threshold value, the compressor forces climbing loading.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various modifications and changes.All any modifications made within spirit and principles of the present invention are equal
Replace, improve etc., it should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of control method of compressor set, which is characterized in that including：
Detect the accumulated running time of each compressor in the compressor set；
Start-up and shut-down control is performed to the compressor according to the accumulated running time of the compressor；
The accumulated running time according to the compressor performs start-up and shut-down control to the compressor to be included：
It is preferential to start accumulated running time short compressor when meeting entry condition；Or
When meeting stop condition, the preferential compressor for closing accumulated running time length；
The entry condition includes：The leaving water temperature of the compressor is more than the leaving water temperature upper limit threshold or actual of setting
Water temperature change rate is more than water temperature change rate given threshold, and have passed through the unlatching behaviour of setting apart from last compression machine start-up operation
Make time interval；
The leaving water temperature upper limit threshold is provided by following formula：
Tmax=Ts+(ΔT÷N)
Wherein, TmaxIt is the leaving water temperature upper limit threshold, TsBe refrigeration water outlet set temperature, Δ T compressor opening temperature deviations,
N is the number of compressors in compressor set；
The stop condition includes：The leaving water temperature of the compressor is less than the leaving water temperature lower threshold of setting, and distance
The closed operation of last compression organ have passed through the shutoff operation time interval of setting；Wherein, the leaving water temperature lower threshold is by such as
Lower formula provides：
Tmin<Ts-1
Wherein, TminIt is the leaving water temperature lower threshold, Ts is the leaving water temperature of setting；
The method further includes the leaving water temperature parameter according to each compressor in the compressor set, and the compressor is carried out
Load regulation, the leaving water temperature parameter according to each compressor in the compressor set load the compressor
Adjusting includes：
If the load deviation of the compressor is more than load deviation upper limit threshold, the compressor climbing loading；
If the load deviation of the compressor is not more than load deviation lower threshold, the compressor climbing unloading；And
If the load deviation of the compressor is not more than the load deviation upper limit threshold, and more than the load deviation lower limit
Threshold value, the compressor climbing are kept；Wherein, the load deviation is provided by equation below：
Δ Q=Δ T1+ λ
Wherein, Δ Q is the load deviation, and Δ T1 is the difference between actual leaving water temperature Ta and setting leaving water temperature Ts, and λ is
Actual water temperature change rate.
2. according to the method described in claim 1, it is characterized in that, according to the accumulated running time of the compressor to the pressure
Contracting machine performs start-up and shut-down control and further includes：
When meeting entry condition, if the accumulated running time of at least two compressors is identical, preferential startup title sequence is forward
Compressor；Or
When meeting stop condition, if the accumulated running time of at least two compressors is identical, preferential closing title sequence is forward
Compressor.
3. according to the method described in claim 1, it is characterized in that, water temperature is gone out according to each compressor in the compressor set
Parameter is spent, carrying out load regulation to the compressor further includes：
When actual water temperature change rate is more than operation water temperature change rate threshold value, the compressor forces climbing loading.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510323716.XA CN105020953B (en) | 2015-06-12 | 2015-06-12 | control method of compressor unit |
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| CN201510323716.XA CN105020953B (en) | 2015-06-12 | 2015-06-12 | control method of compressor unit |
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| CN105020953B true CN105020953B (en) | 2018-06-01 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106288175B (en) * | 2016-08-12 | 2019-02-05 | 珠海格力电器股份有限公司 | Modularized combined air conditioning system and compressor control device and method thereof |
| CN107575369A (en) * | 2017-09-30 | 2018-01-12 | 湖北特威特动力科技股份有限公司 | Air compressor remote centralized plenum system and its energy-saving control method |
| CN108106291A (en) * | 2018-01-25 | 2018-06-01 | 天津商业大学 | The control method and control device of start/stop of compressor in Parallel sets |
| CN109579190B (en) * | 2018-12-25 | 2021-01-29 | 新奥数能科技有限公司 | Method and device for determining operation mode of heat pump unit compressor |
| CN110645646A (en) * | 2019-10-12 | 2020-01-03 | 江苏致远高科能源科技有限公司 | Heat recovery type double-cold-source fresh air dehumidifier and control method thereof |
| CN110986453A (en) * | 2019-12-18 | 2020-04-10 | 珠海格力电器股份有限公司 | Refrigerator and compressor starting control method, device and system thereof |
| CN114413456B (en) * | 2022-01-14 | 2023-09-08 | 埃能科技(广州)有限公司 | Group control method and equipment for chilled water system of central air conditioner |
| CN115046339A (en) * | 2022-05-13 | 2022-09-13 | 青岛澳柯玛生物医疗有限公司 | Parallel control system and method for variable frequency press |
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| JP2004069213A (en) * | 2002-08-08 | 2004-03-04 | Fujitsu General Ltd | Control method of multi-chamber type air conditioner |
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| CN101430124A (en) * | 2007-11-08 | 2009-05-13 | 无锡同方人工环境有限公司 | Modular multi-connection operation control method |
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Inventor after: Cheng Qi Inventor after: Zhou Tingyu Inventor after: Daikun Inventor after: Pan Yi Inventor after: Liu Jinjun Inventor after: Liao Juan Inventor after: Zhao Zhongmin Inventor after: Chen Peisheng Inventor after: Zou Yingnan Inventor after: Wang Xiuchuan Inventor after: Chen Xibao Inventor after: Shi Jiangang Inventor after: Li Jian Inventor after: Liu Mingquan Inventor before: Cheng Qi Inventor before: Chen Peisheng |
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Effective date of registration: 20151209 Address after: 519070 Gree Electric Appliances,Inc.of Zhuhai, Jinji West Road, Qianshan, Zhuhai City, Guangdong Province Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Applicant after: STATE NUCLEAR POWER ENGINEERING Co. Address before: 519070 Gree Electric Appliances,Inc.of Zhuhai, Jinji West Road, Qianshan, Zhuhai City, Guangdong Province Applicant before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI |
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Effective date of registration: 20221028 Address after: 519070 No. 789 Jinji Road West, Zhuhai, Guangdong Patentee after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: 519070 Gree Electric Appliances,Inc.of Zhuhai, Jinji West Road, Qianshan, Zhuhai City, Guangdong Province Patentee before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Patentee before: STATE NUCLEAR POWER ENGINEERING Co. |
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Address after: 519070 No. 789 Jinji Road West, Zhuhai, Guangdong Patentee after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: 519070 No. 789 Jinji Road West, Zhuhai, Guangdong Patentee before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |