CN108106291A - The control method and control device of start/stop of compressor in Parallel sets - Google Patents
The control method and control device of start/stop of compressor in Parallel sets Download PDFInfo
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- CN108106291A CN108106291A CN201810073376.3A CN201810073376A CN108106291A CN 108106291 A CN108106291 A CN 108106291A CN 201810073376 A CN201810073376 A CN 201810073376A CN 108106291 A CN108106291 A CN 108106291A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005057 refrigeration Methods 0.000 claims abstract description 24
- 230000003434 inspiratory effect Effects 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000002123 temporal effect Effects 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 3
- 206010016256 fatigue Diseases 0.000 claims 1
- 230000001186 cumulative effect Effects 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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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
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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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
- F25B2600/01—Timing
-
- 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
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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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 invention discloses the control method and control device of start/stop of compressor in a kind of Parallel sets, to optimize the run time of compressor, the reliability service of safeguards system.This method comprises the following steps：The pressure of inspiration(Pi) p of acquisition refrigeration unit in parallel, and with increasing machine pressure p and subtracting machine pressure pjIt is compared；The accumulated running time of each standby compressor is read, the orderly start and stop of each compressor are controlled according to the principle of " accumulated running time, most short compressor first started, and accumulated running time, most long compressor was first shut down ".The control method of the present invention passes through and compares total cumulative time of compressor operating to control start/stop of compressor, homogenizes the run time of multiple compressors, start and stop ordering, improves the reliability of system.Reduce the probability that compressor breaks down in refrigeration Parallel sets, extend the service life of entire refrigeration parallel connection compressor, solve the problems, such as unmatched with the service life for Parallel sets other devices of freezing.
Description
Technical field
The present invention relates to refrigeration technology field, more specifically, being the control for being related to start/stop of compressor in a kind of Parallel sets
Method processed and control device.
Background technology
With the continuous progress of Refrigeration Technique, refrigeration unit in parallel is since it is with the spies such as reliability is high, operating cost is low
Point is widely used.
It is using the peak value of summer as design basis in the design of refrigeration unit in parallel.But night in winter makes
It is about the 20% of total capacity with capacity, load change is big.Among refrigeration parallel machine set operation, it is often necessary to increase compressor fortune
Row number of units reduces operation number of units.Each compressor is often according to pressure of inspiration(Pi) and start and stop, pressure of inspiration(Pi) in the Parallel sets that freeze
Higher than setting value, send request compressor and increase machine signal, pressure of inspiration(Pi) sends request compressor less than setting value in refrigeration unit
Subtract machine signal.According to increasing machine signal, subtracting machine signal, the method for the start and stop of each compressor generally controlled in refrigeration Parallel sets
There are following three kinds：One kind is random start and stop compressor, i.e. the start and stop of compressor do not have sequencing；One kind is to each compressor
Fixed physical address is assigned, i.e., every time according to each compressor physical address permanent order start and stop compressor.Another is
Rotation start and stop compressor " first stops to open, first open and first stop " order start and stop compressor afterwards.The defects of three of the above control method technology
It is that the accumulated running time of compressor is not uniform in Parallel sets, and the longtime running for the Parallel sets that freeze can cause surely
The accumulative operation total time for the compressor having in Parallel sets is long, and the accumulative operation total time of some compressors is short, and compressor
Service life be certain, as a result have led to the longer compressor of run time break down at first or failure probability increase
It is high.In the Parallel sets that freeze, when any or multiple compressors break down, it should not replace, therefore, malfunctioning compressor drop
The low service life of entire Parallel sets, raises the operating cost of refrigeration system；Furthermore after compressor breaks down, such as
Can not on-call maintenance, being likely to result in refrigeration system can not resume work in time, make the valuables wherein preserved damage, cause
Loss；What is more important, the control signal only sent to control object compressor in above-mentioned three kinds of control methods, not
The feedback element whether detection compressor runs, system operation are unreliable.
Although there is the technical solution of recording compressed machine run time in the prior art, the run time recorded is only
Data as a record are not involved in controlling for checking.
The content of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide compressors in a kind of Parallel sets
The control method and control device of start and stop, to optimize the run time of compressor, the reliability service of safeguards system.
The technical solution adopted to achieve the purpose of the present invention is：
The control method of start/stop of compressor, comprises the following steps in a kind of Parallel sets：
(1) the pressure of inspiration(Pi) p of refrigeration unit in parallel is gathered, and with increasing machine pressure pzWith subtract machine pressure pjIt is compared；
(2) accumulated running time of each standby compressor is read, according to " accumulated running time, most short compressor first opened
Dynamic, accumulated running time, most long compressor was first shut down " principle control the orderly start and stop of each compressor；
The recording method of the accumulated running time of the compressor is：The electric current on each compressor major loop is detected, is sent
Enter controller, controller confirms that compressor is in operating mode control time timer operation according to the electric current detected, and will
It is preserved in write time working time memory；
The pressure of inspiration(Pi) p is with increasing machine pressure pzAnd subtract machine pressure pjIt is performed by the following method after comparing：
If pressure of inspiration(Pi) p is more than increasing machine pressure pz, be delayed the t1 times after generate increasing machine pulse, while detect it is all
Standby compressor；The accumulated running time of each compressor in more standby；Determine that wherein total run time is shortest
Compressor N*, turn on the corresponding output point of the compressor；Controller detection compressor N*Whether normally start, it is right if starting
Answer compressor N*Time timer start accumulative timing, and be stored in real time in time memory；Shield increasing machine arteries and veins simultaneously
After rushing the t1 times, return to step (1)；If compressor N*Do not start, then alarm；
If pressure of inspiration(Pi) p, which is less than, subtracts machine pressure pj, be delayed the t2 times after generate subtract machine pulse, while detect it is all
The compressor of operation；The accumulated running time of more running each compressor determines that wherein total run time is most long
Compressor N#, interrupt the corresponding output point of the compressor；Detect compressor N#Whether orderly closedown, if shutting down, corresponding pressure
Contracting machine N#Time timer stop accumulative timing, and be stored in real time in time memory；Shielding subtracts machine pulse t2 simultaneously
After time, return to step (1)；If compressor N#It does not shut down, then alarms；
If pressure of inspiration(Pi) p subtracts machine pressure p more than settingj, and less than increasing machine pressure pz, then return to step (1).
When starting standby compressor, whether the compressor is detected in starting state is allowed, if allowing to start just
Often start, if not allowing to start, alert.
The technical parameter of opening initialization input includes compressor number in Parallel sets, increases machine pressure, subtract machine pressure, increase
Machine delay time, main circuit current scope when subtracting machine delay time and each compressor normal operation.
The control device used in a kind of Parallel sets described in the control method of start/stop of compressor including input equipment, is inhaled
Air pressure force snesor, controller, time memory, current detector corresponding with per compressor and contactor；Every compression
The current detector and contactor are separately installed in the major loop of machine；The signal output part of the input equipment and the control
The data input pin connection of device processed；The output terminal of the inspiratory pressure sensor and the pressure data input terminal of the controller connect
It connects；The output terminal of the current detector is connected with the current data input terminal of the controller；The control letter of the contactor
Number input terminal is connected with the control signal output of the controller, and the output terminal of the contactor is connected with the compressor；
The input equipment is used to input required technical parameter value；
The inspiratory pressure sensor gives the controller for detecting unit pressure of inspiration(Pi)；
The current detector is installed in the major loop of each compressor, and detects the major loop electricity of corresponding compressor
It streams in the controller；
The time memory is used to store the run time of each compressor；
The contactor is used to receive the control signal of the controller output, and starts or close corresponding compression
Machine；
The controller reads the current value of current detector and controls timer operation according to surveyed current value, and will meter
When device corresponding temporal information storage into time memory, record the run time of each compressor；And by comparing air-breathing
Pressure p is with increasing machine pressure pzAnd subtract machine pressure pjControl unit operation.
The main contacts of the contactor is installed on the major loop of corresponding compressor, for leading for control circuit detector
Logical or cut-out, the control signal input of the coil of the contactor are connected with the control signal output of the controller.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, control method of the invention makes more by comparing total cumulative time of compressor operating to control start/stop of compressor
The run time of compressor homogenizes, start and stop ordering, improves the reliability of system.Reduce and compressed in refrigeration Parallel sets
The probability that machine breaks down extends the service life of entire refrigeration parallel connection compressor, solves and refrigeration Parallel sets other devices
Service life unmatched problem.
2nd, in control method of the invention, the run time through each compressor in overwriting Parallel sets, on the one hand, can
Data transmission will be run to high in the clouds, the situation (start and stop time of the longtime running of each compressor of refrigeration unit are understood convenient for producer
Number, each compressor operating cycle etc.), be conducive to design, improvement, maintenance work that compressor producer is compressed machine；The opposing party
Face according to the time of these records, can calculate the load variations situations of entire Parallel sets, convenient for after designer for
The design of entire refrigeration Parallel sets system improves.
3rd, control method of the invention carries out current feedback detection to Parallel sets compressor operating, is provided according to controller
Whether have normal current carry out startup control, be one and carry if being detected after compressor start signal in the main loop circuit of compressor
The detection process of the closed loop of feedback, signal is relatively reliable, and really, start/stop of compressor is orderly, and system reliability is high.
Description of the drawings
Fig. 1 show the structure principle chart of the control device of start/stop of compressor in Parallel sets of the present invention；
Fig. 2 show the flow chart of the control method of start/stop of compressor in Parallel sets of the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Fig. 1 show the structure principle chart of the control device of start/stop of compressor in Parallel sets of the present invention, is set including input
Standby 6, inspiratory pressure sensor 4, controller 5, time memory, with often 3 corresponding current detector 2 of compressor and contacting
Device.The current detector 2 and contactor are separately installed in major loop per compressor 3.The signal of the input equipment
Output terminal is connected with the data input pin of the controller；The pressure of the output terminal of the inspiratory pressure sensor and the controller
Force data input terminal connects；The output terminal of the current detector is connected with the current data input terminal of the controller；It is described
The control signal input of contactor is connected with the control signal output of the controller, the output terminal of the contactor and institute
State compressor connection.In the present embodiment, the main contacts 1-1 of the contactor is installed on the major loop of corresponding compressor 3, is used
In the on or off of control circuit detector 2, control signal input and the controller of the coil 1-2 of the contactor
Control signal output connection.
The input equipment is for technical parameter value needed for inputting, and in the present embodiment, the input equipment is mounted on control
Button and display panel on device 3 processed.
The inspiratory pressure sensor 4 gives the controller for detecting unit pressure of inspiration(Pi).The pressure of inspiration(Pi)
Sensor is direct current pressure type, direct current streaming or other forms pressure sensor.
The current detector is installed in the major loop of each compressor, and detects the major loop electricity of corresponding compressor
It streams in the controller；
The time memory is used to store the run time of each compressor；
The contactor is used to receive the control signal of the controller output, and starts or close corresponding compression
Machine；
The controller reads the current value of current detector and controls timer operation according to surveyed current value, and will meter
When device corresponding temporal information storage into time memory, record the run time of each compressor；And by comparing air-breathing
Pressure p is with increasing machine pressure pzAnd subtract machine pressure pjControl unit operation.
The compressor is screw compressor, rotor compressor, helical-lobe compressor, piston compressor or other patterns compress
Machine it is any, may be employed and variable refrigerant volume and determine refrigerant flow mode.
Control device shown in FIG. 1 may be employed in the control method of start/stop of compressor in Parallel sets of the present invention, can also
Using the control device of other structures.In opening initialization, the record of no compressor operating time or record time are zero,
So all compressor record times are most short, and it is identical and be most short to occur multiple compressor operating times when increasing machine
When, preferential startup physical address is forward.Equally subtracting machine, to be also possible to occur multiple compressor operating times identical and be most
When long, preferential shutdown physical address is forward.When having record after running a period of time, method using the present invention.
The control method flow chart of the present invention is as shown in Fig. 2, comprise the following steps：
(1) in use, first passing through the control parameter that input equipment inputs refrigeration Parallel sets on controller, parameter bag
It includes：Compressor number n in Parallel sets increases machine pressure pz, subtract machine pressure pj(wherein pz＞ pz), increase machine delay time t1, subtract machine
Delay time t2, main circuit current scope during each compressor normal operation.
(2) the pressure of inspiration(Pi) p of refrigeration unit in parallel is gathered by inspiratory pressure sensor, is sent to controller, and with increasing machine
Pressure pzWith subtract machine pressure pjIt is compared；
(3) simultaneously, controller reads the accumulated running time of each standby compressor, according to " accumulated running time is most short
Compressor first starts, and accumulated running time, most long compressor was first shut down " principle control the orderly start and stop of each compressor.
Specifically execution method is：
If pressure of inspiration(Pi) p is more than increasing machine pressure pz, be delayed the t1 times after generate increasing machine pulse, while detect it is all
Standby compressor；The accumulated running time of each compressor in more standby；Determine that wherein total run time is shortest
Compressor N*, turn on the corresponding contactor coil output point of the compressor；Controller detection compressor N*Whether normally open
It is dynamic, if starting, corresponding compressor N*Time timer start accumulative timing, and be stored in real time in time memory；Together
When shield the increasing machine pulse t1 times after, return to step (2)；If compressor N*Do not start, then alarm；
If pressure of inspiration(Pi) p, which is less than, subtracts machine pressure pj, be delayed the t2 times after generate subtract machine pulse, while detect it is all
The compressor of operation；The accumulated running time of more running each compressor determines that wherein total run time is most long
Compressor N#, interrupt the corresponding output point of the compressor；Detect compressor N#Whether orderly closedown, if shutting down, corresponding pressure
Contracting machine N#Time timer stop accumulative timing, and be stored in real time in time memory；Shielding subtracts machine pulse t2 simultaneously
After time, return to step (1).If compressor N#It does not shut down, then alarms；
If pressure of inspiration(Pi) p subtracts machine pressure p more than settingj, and less than increasing machine pressure pz, then return to step (2).
In the method for the present invention, the recording method of the accumulated running time of the compressor is：Detect each compression owner
Electric current on circuit, feeding controller, controller control time timer operation, and will be in write time working time memory
It preserves.
When starting standby compressor, whether the compressor is detected in starting state is allowed, if allowing to start just
Often start, if not allowing to start, alert.
The control method of the present invention makes more by comparing total cumulative time of compressor operating to control start/stop of compressor
The run time of compressor homogenizes, start and stop ordering, improves the reliability of system.Reduce compressor in refrigeration Parallel sets
The probability of failure extends the service life of entire refrigeration parallel connection compressor, solves and refrigeration Parallel sets other devices
Service life unmatched problem.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. the control method of start/stop of compressor in a kind of Parallel sets, which is characterized in that comprise the following steps：
(1) the pressure of inspiration(Pi) p of refrigeration unit in parallel is gathered, and with increasing machine pressure pzWith subtract machine pressure pjIt is compared；
(2) accumulated running time of each standby compressor is read, according to " accumulated running time, most short compressor first started, and tired out
The meter most long compressor of run time is first shut down " principle control the orderly start and stop of each compressor；
The recording method of the accumulated running time of the compressor is：The electric current on each compressor major loop is detected, is sent into control
Device processed, controller confirm that compressor is in operating mode control time timer operation according to the electric current that detects, and by work
It is preserved in write time time memory；
The pressure of inspiration(Pi) p is with increasing machine pressure pzAnd subtract machine pressure pjIt is performed by the following method after comparing：
If pressure of inspiration(Pi) p is more than increasing machine pressure pz, increasing machine pulse is generated after the t1 times that are delayed, while is detected all just standby
Compressor；The accumulated running time of each compressor in more standby；It determines wherein to amount to the shortest compression of run time
Machine N*, turn on the corresponding output point of the compressor；Controller detection compressor N*Whether normally start, if starting, corresponding pressure
Contracting machine N*Time timer start accumulative timing, and be stored in real time in time memory；Shield increasing machine pulse t1 simultaneously
After time, return to step (1)；If compressor N*Do not start, then alarm；
If pressure of inspiration(Pi) p, which is less than, subtracts machine pressure pj, generate after the t2 times that are delayed and subtract machine pulse, while detect all be currently running
Compressor；The accumulated running time of more running each compressor determines wherein to amount to the longest pressure of run time
Contracting machine N#, interrupt the corresponding output point of the compressor；Detect compressor N#Whether orderly closedown, if shutting down, corresponding compressor
N#Time timer stop accumulative timing, and be stored in real time in time memory；Shielding subtracts the machine pulse t2 times simultaneously
Afterwards, return to step (1)；If compressor N#It does not shut down, then alarms；
If pressure of inspiration(Pi) p subtracts machine pressure p more than settingj, and less than increasing machine pressure pz, then return to step (1).
2. the control method of start/stop of compressor in Parallel sets according to claim 1, which is characterized in that standby starting
During compressor, whether the compressor is detected in starting state is allowed, is normally started if allowing to start, if not allowing to open
It moves, then alert.
3. the control method of start/stop of compressor in Parallel sets according to claim 1 or 2, which is characterized in that start is just
The technical parameter of beginningization input includes compressor number in Parallel sets, increases machine pressure, subtract machine pressure, increase machine delay time, subtract
Main circuit current scope when machine delay time and each compressor normal operation.
4. the control device used in a kind of Parallel sets described in claim 1 described in the control method of start/stop of compressor,
It is characterized in that, including input equipment, inspiratory pressure sensor, controller, time memory, electric current corresponding with per compressor
Detector and contactor；The current detector and contactor are separately installed in major loop per compressor；The input
The signal output part of equipment is connected with the data input pin of the controller；The output terminal of the inspiratory pressure sensor with it is described
The pressure data input terminal connection of controller；The current data input terminal of the output terminal of the current detector and the controller
Connection；The control signal input of the contactor is connected with the control signal output of the controller, the contactor
Output terminal is connected with the compressor；
The input equipment is used to input required technical parameter value；
The inspiratory pressure sensor gives the controller for detecting unit pressure of inspiration(Pi)；
The current detector is installed in the major loop of each compressor, and the main circuit current for detecting corresponding compressor is sent
Into the controller；
The time memory is used to store the run time of each compressor；
The contactor is used to receive the control signal of the controller output, and starts or close corresponding compressor；
The controller reads the current value of current detector and according to surveyed current value control timer operation, and by timer
Corresponding temporal information storage records the run time of each compressor into time memory；And by comparing pressure of inspiration(Pi) p
With increasing machine pressure pzAnd subtract machine pressure pjControl unit operation.
5. control device according to claim 4, which is characterized in that the main contacts of the contactor is installed on corresponding pressure
On the major loop of contracting machine, for the on or off of control circuit detector, the control signal input of the coil of the contactor
End is connected with the control signal output of the controller.
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| CN201810073376.3A CN108106291A (en) | 2018-01-25 | 2018-01-25 | The control method and control device of start/stop of compressor in Parallel sets |
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| CN201810073376.3A CN108106291A (en) | 2018-01-25 | 2018-01-25 | The control method and control device of start/stop of compressor in Parallel sets |
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| CN111934059A (en) * | 2020-05-26 | 2020-11-13 | 南方电网调峰调频发电有限公司 | Method for supplying cold to cluster electrochemical energy storage device |
| CN112379648A (en) * | 2020-11-17 | 2021-02-19 | 青岛北冰洋冷暖能源科技有限公司 | Control method for judging whether unit is increased or decreased in cold station control system |
| CN113417843A (en) * | 2021-08-10 | 2021-09-21 | 天津森普捷电子有限公司 | Control method of multi-machine-head air compressor controller |
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| CN116146516A (en) * | 2022-12-05 | 2023-05-23 | 广钢气体(广州)有限公司 | Intelligent grid-connected control method and system for multiple compressors |
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| CN111934059A (en) * | 2020-05-26 | 2020-11-13 | 南方电网调峰调频发电有限公司 | Method for supplying cold to cluster electrochemical energy storage device |
| CN111934059B (en) * | 2020-05-26 | 2022-03-18 | 南方电网调峰调频发电有限公司 | Method for supplying cold to cluster electrochemical energy storage device |
| CN112379648A (en) * | 2020-11-17 | 2021-02-19 | 青岛北冰洋冷暖能源科技有限公司 | Control method for judging whether unit is increased or decreased in cold station control system |
| CN113417843A (en) * | 2021-08-10 | 2021-09-21 | 天津森普捷电子有限公司 | Control method of multi-machine-head air compressor controller |
| CN114893921A (en) * | 2022-05-24 | 2022-08-12 | 青岛海信日立空调系统有限公司 | Magnetic suspension water chilling unit |
| CN114893921B (en) * | 2022-05-24 | 2023-08-08 | 青岛海信日立空调系统有限公司 | Magnetic suspension water chilling unit |
| WO2024078081A1 (en) * | 2022-10-14 | 2024-04-18 | 珠海格力电器股份有限公司 | Compressor control method and apparatus, and unit |
| CN116146516A (en) * | 2022-12-05 | 2023-05-23 | 广钢气体(广州)有限公司 | Intelligent grid-connected control method and system for multiple compressors |
| CN116146516B (en) * | 2022-12-05 | 2024-03-12 | 广钢气体(广州)有限公司 | Intelligent grid-connected control method and system for multiple compressors |
| CN117053618A (en) * | 2023-10-12 | 2023-11-14 | 江苏橙智云信息技术有限公司 | Variable-frequency water chilling unit control system and method |
| CN117053618B (en) * | 2023-10-12 | 2023-12-26 | 江苏橙智云信息技术有限公司 | Variable-frequency water chilling unit control system and method |
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