CN107120779A - The control method and device of air-conditioning group control system - Google Patents
The control method and device of air-conditioning group control system Download PDFInfo
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- CN107120779A CN107120779A CN201610100953.4A CN201610100953A CN107120779A CN 107120779 A CN107120779 A CN 107120779A CN 201610100953 A CN201610100953 A CN 201610100953A CN 107120779 A CN107120779 A CN 107120779A
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Abstract
The invention discloses a kind of control method and device of air-conditioning group control system, wherein, this method includes：Obtain the freezing water supply mean temperature of handpiece Water Chilling Units and freezing backwater mean temperature in air-conditioning group control system；According to the frequency conversion of chilled water pump in freezing water supply mean temperature and freezing backwater mean temperature control air-conditioning group control system.The present invention is solved to be needed to install the problem of a large amount of monitoring devices cause the increase of service system trouble point, cost is higher in air-conditioning group control system in the prior art, while reducing all kinds of detection devices, substantially reduce construction cost and maintenance cost, further, the trouble point amount detection of air-conditioning group control system is also reduced.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air-conditioning group control system
Control method and device.
Background technology
Central air conditioner room is when designing group control system, in order to do Energy Saving Control, need to be supplied in freezing
The upper mounting temperature sensor of return main, pressure sensor, flowmeter etc., for example, supply in cooling
The upper mounting temperature sensor of return main, and in outdoor mounted outdoor temperature humidity sensor, install
Position is as shown in Figure 1.
In Fig. 1, freezing main temperature sensor is used for the temperature for detecting chilled water pipe in real time, root
Chilled water pump frequency conversion is controlled according to the temperature value；Cooling main temperature sensor is used to detect cold in real time
But the temperature of water pipe, according to the temperature control cooling water pump and blower fan of cooling tower frequency conversion；Freezing is total
Pipe pressure sensor is used for the pressure for detecting water pipe in real time, calculates freezing and supplies return main's pressure difference,
Control freezing bypass butterfly valve；Freezing total flowmeter for pipe is used to monitoring the flow velocity of chilled water, and according to
Specific heat capacity formula Q=m*c* △ t, the cold of computing system carries out plus-minus to air-conditioner water system and carries control
System；Outdoor temperature humidity sensor is used to monitor outdoor humiture in real time, calculates outdoor wet bulb
Temperature, wet-bulb temperature plus 2 DEG C or so are maintained at according to calculated value control cooling tower leaving water temperature.That is,
System is used as control using the parameter of above-mentioned temperature sensor, pressure sensor, flowmeter detection
Basis, completes the control of central air conditioner room group control system.
But in this design, due to mounting temperature sensor, pressure sensor, flow
The monitoring devices such as meter, considerably increase engineering material cost, construction and installation cost；Further,
Monitoring device is installed and also increases system failure point, the group control system of the design is set in sensor
It is standby to cause the problem of whole system can be by automatic running be unable to when breaking down, allow system
Manual control mode is become again from automatic control mode；Further, since different types of TEMP
The precision of device is different, and the temperature of the temperature sensor detection on house steward can also be examined with unit
There is larger deviation in the temperature of survey, directly affects the control accuracy of system.
For correlation technique it is hollow adjust to need a large amount of monitoring devices are installed in group control system cause system
The problem of system trouble point increases, cost is higher, not yet proposes to efficiently solve scheme at present.
The content of the invention
The invention provides a kind of control method and device of air-conditioning group control system, at least to solve
Needing to install a large amount of monitoring devices in air-conditioning group control system in the prior art causes service system trouble point
Increase, the problem of cost is higher.
In order to solve the above technical problems, according to the one side of the embodiment of the present disclosure, the present invention is carried
A kind of control method of air-conditioning group control system is supplied, this method includes：Obtain air-conditioning group control system
The freezing water supply mean temperature and freezing backwater mean temperature of middle handpiece Water Chilling Units；Supplied according to freezing
The change of chilled water pump in water mean temperature and freezing backwater mean temperature control air-conditioning group control system
Frequently.
Further, obtain air-conditioning group control system in handpiece Water Chilling Units freezing water supply mean temperature with
And freezing backwater mean temperature, including：Freezing in response to the acquisition handpiece Water Chilling Units of triggering is supplied water
Instruction, judge in current air-conditioning group control system freeze electric butterfly valve opening；According to cold
Freeze the opening of electric butterfly valve, calculate the freezing water supply mean temperature of handpiece Water Chilling Units；And,
In response to the instruction of the freezing backwater of the acquisition handpiece Water Chilling Units of triggering, current air-conditioning team control system is judged
The opening of electric butterfly valve is freezed in system；According to the opening of freezing electric butterfly valve, calculate
The freezing backwater mean temperature of handpiece Water Chilling Units.
Further, according to the opening of freezing electric butterfly valve, the freezing of handpiece Water Chilling Units is calculated
Water supply mean temperature, including：When none freezing electric butterfly valve is reached, cold water is directly calculated
The average temperature value of the freezing water main of unit, supplies water average warm as the freezing of handpiece Water Chilling Units
Degree；When there is freezing electric butterfly valve and reach, the cold of each handpiece Water Chilling Units for reaching position is calculated
Freeze the draw value of supply water temperature, be used as the freezing water supply mean temperature of handpiece Water Chilling Units.
Further, according to the opening of freezing electric butterfly valve, the freezing of handpiece Water Chilling Units is calculated
Backwater mean temperature, including：When none freezing electric butterfly valve is reached, cold water is directly calculated
The average temperature value of the freezing return main of unit, is used as the average temperature of the freezing backwater of handpiece Water Chilling Units
Degree；When there is freezing electric butterfly valve and reach, the cold of each handpiece Water Chilling Units for reaching position is calculated
Freeze the draw value of return water temperature, be used as the freezing backwater mean temperature of handpiece Water Chilling Units.
Further, this method also includes：Obtain the cooling of handpiece Water Chilling Units in air-conditioning group control system
Water supply mean temperature and cooling backwater mean temperature；According to cooling water supply mean temperature and cold
But backwater mean temperature controls the change of the frequency conversion cooling tower fan of cooling water pump in air-conditioning group control system
Frequently.
Further, obtain air-conditioning group control system in handpiece Water Chilling Units cooling water supply mean temperature with
And cooling backwater mean temperature, including：Cooling in response to the acquisition handpiece Water Chilling Units of triggering is supplied water
Instruction, judge in current air-conditioning group control system cool down electric butterfly valve opening；According to cold
But the opening of electric butterfly valve, calculates the cooling water supply mean temperature of handpiece Water Chilling Units；And,
In response to the instruction of the cooling backwater of the acquisition handpiece Water Chilling Units of triggering, current air-conditioning team control system is judged
The opening of electric butterfly valve is cooled down in system；According to the opening of cooling electric butterfly valve, calculate
The cooling backwater mean temperature of handpiece Water Chilling Units.
Further, according to the opening of cooling electric butterfly valve, the cooling of handpiece Water Chilling Units is calculated
Water supply mean temperature, including：When none cooling electric butterfly valve is reached, cold water is directly calculated
The average temperature value of the cooling water main of unit, supplies water average warm as the cooling of handpiece Water Chilling Units
Degree；When there is cooling electric butterfly valve and reach, the cold of each handpiece Water Chilling Units for reaching position is calculated
But the draw value of supply water temperature, is used as the cooling water supply mean temperature of handpiece Water Chilling Units.
Further, according to the opening of cooling electric butterfly valve, the cooling of handpiece Water Chilling Units is calculated
Backwater mean temperature, including：When none cooling electric butterfly valve is reached, cold water is directly calculated
The average temperature value of the cooling backwater house steward of unit, is used as the average temperature of the cooling backwater of handpiece Water Chilling Units
Degree；When there is cooling electric butterfly valve and reach, the cold of each handpiece Water Chilling Units for reaching position is calculated
But the draw value of return water temperature, is used as the cooling backwater mean temperature of handpiece Water Chilling Units.
Further, air-conditioning group control system includes pressure bypass valve, and pressure bypass valve is to rely on oneself
Formula bypasses butterfly valve.
Further, controlled according to freezing water supply mean temperature and freezing backwater mean temperature
In air-conditioning group control system after the frequency conversion of chilled water pump, in addition to：Current air-conditioning group is known in monitoring
The average load for the handpiece Water Chilling Units being had turned in control system is more than default plus machine load threshold, calls
First logic of propositions judges whether current air-conditioning group control system meets the operation bar of increase handpiece Water Chilling Units
Part；If meeting, current air-conditioning group control system is controlled to increase a handpiece Water Chilling Units operation.
Further, the first logic of propositions is called to judge whether current air-conditioning group control system meets increasing
Plus the service condition of handpiece Water Chilling Units, including：The first logic of propositions is called to judge in very first time threshold
In value, if continuously meet following condition：The cooling-water machine being had turned in current air-conditioning group control system
Group run time is more than the second time threshold；And, what is had turned in current air-conditioning group control system is cold
The quantity of water dispenser group is less than handpiece Water Chilling Units total quantity；And, the temperature drop rate for freezing return main is small
In scheduled rate threshold value；And, the handpiece Water Chilling Units that are had turned in current air-conditioning group control system are averaged
Load is more than default plus machine load threshold；If continuous meet, judge that current air-conditioning group control system expires
The service condition of foot increase handpiece Water Chilling Units.
Further, controlled according to freezing water supply mean temperature and freezing backwater mean temperature
In air-conditioning group control system after the frequency conversion of chilled water pump, in addition to：Current air-conditioning group is known in monitoring
The average load for the handpiece Water Chilling Units being had turned in control system is less than the handpiece Water Chilling Units quantity with having turned on
Corresponding preset subtracts machine load threshold, calls the second logic of propositions to judge current air-conditioning group control system
Whether satisfaction reduce handpiece Water Chilling Units service condition；If meeting, current air-conditioning group control system is controlled
Reduce by a handpiece Water Chilling Units operation.
Further, call the second logic of propositions to judge whether current air-conditioning group control system meets to subtract
The service condition of few handpiece Water Chilling Units, including：The second logic of propositions is called to judge in the 3rd time threshold
In value, if continuously meet following condition：The cooling-water machine being had turned in current air-conditioning group control system
Group run time is more than the 4th time threshold；And, what is had turned in current air-conditioning group control system is cold
The average load of water dispenser group is less than the default machine that subtracts corresponding with the handpiece Water Chilling Units quantity having turned on and loaded
Threshold value；If continuous meet, judge that current air-conditioning group control system meets the operation for reducing handpiece Water Chilling Units
Condition.
According to the another aspect of the embodiment of the present disclosure, there is provided a kind of control of air-conditioning group control system
Device, the device includes：First acquisition unit, for obtaining cooling-water machine in air-conditioning group control system
The freezing water supply mean temperature and freezing backwater mean temperature of group；First control unit, is used for
According to cold in freezing water supply mean temperature and freezing backwater mean temperature control air-conditioning group control system
Freeze the frequency conversion of water pump.
Further, first acquisition unit includes：First judge module, in response to triggering
Acquisition handpiece Water Chilling Units the instruction supplied water of freezing, judge in current air-conditioning group control system that freezing is electric
The opening of dynamic butterfly valve；First computing module, for the unlatching shape according to freezing electric butterfly valve
State, calculates the freezing water supply mean temperature of handpiece Water Chilling Units；Second judge module, in response to
The instruction of the freezing backwater of the acquisition handpiece Water Chilling Units of triggering, judges cold in current air-conditioning group control system
Freeze the opening of electric butterfly valve；Second computing module, for opening according to freezing electric butterfly valve
State is opened, the freezing backwater mean temperature of handpiece Water Chilling Units is calculated.
Further, the first computing module includes：First calculating sub module, for cold at none
When freezing electric butterfly valve and reaching, the mean temperature for freezing water main of handpiece Water Chilling Units is directly calculated
Value, is used as the freezing water supply mean temperature of handpiece Water Chilling Units；Second calculating sub module, for depositing
When freezing electric butterfly valve and reaching, the freezing for calculating each handpiece Water Chilling Units for reaching position is supplied water temperature
The draw value of degree, is used as the freezing water supply mean temperature of handpiece Water Chilling Units；Second computing module includes：
3rd calculating sub module, for when none freezing electric butterfly valve is reached, directly calculating cold water
The average temperature value of the freezing return main of unit, is used as the average temperature of the freezing backwater of handpiece Water Chilling Units
Degree；4th calculating sub module, for when there is freezing electric butterfly valve and reach, calculating to be reached
The draw value of the freezing return water temperature of each handpiece Water Chilling Units of position, is returned as the freezing of handpiece Water Chilling Units
Water mean temperature.
Further, the device also includes：Second acquisition unit, for obtaining air-conditioning team control system
The cooling water supply mean temperature and cooling backwater mean temperature of handpiece Water Chilling Units in system；Second control
Unit, for controlling air-conditioning group according to cooling water supply mean temperature and cooling backwater mean temperature
The frequency conversion of the frequency conversion cooling tower fan of cooling water pump in control system.
Further, second acquisition unit includes：3rd judge module, in response to triggering
Acquisition handpiece Water Chilling Units the instruction supplied water of cooling, judge in current air-conditioning group control system that cooling is electric
The opening of dynamic butterfly valve；3rd computing module, for the unlatching shape according to cooling electric butterfly valve
State, calculates the cooling water supply mean temperature of handpiece Water Chilling Units；4th judge module, in response to
The instruction of the cooling backwater of the acquisition handpiece Water Chilling Units of triggering, judges cold in current air-conditioning group control system
But the opening of electric butterfly valve；4th computing module, for opening according to cooling electric butterfly valve
State is opened, the cooling backwater mean temperature of handpiece Water Chilling Units is calculated.
Further, the 3rd computing module includes：5th calculating sub module, for cold at none
But when electric butterfly valve is reached, the mean temperature of the cooling water main of handpiece Water Chilling Units is directly calculated
Value, is used as the cooling water supply mean temperature of handpiece Water Chilling Units；6th calculating sub module, for depositing
When cooling down electric butterfly valve and reaching, the cooling for calculating each handpiece Water Chilling Units for reaching position is supplied water temperature
The draw value of degree, is used as the cooling water supply mean temperature of handpiece Water Chilling Units；4th computing module includes：
7th calculating sub module, for when none cooling electric butterfly valve is reached, directly calculating cold water
The average temperature value of the cooling backwater house steward of unit, is used as the average temperature of the cooling backwater of handpiece Water Chilling Units
Degree；8th calculating sub module, for when there is cooling electric butterfly valve and reach, calculating to be reached
The draw value of the cooling backwater temperature of each handpiece Water Chilling Units of position, is used as cooling back for handpiece Water Chilling Units
Water mean temperature.
Further, the device also includes：Increase identifying unit, current sky is known for monitoring
The average load for the handpiece Water Chilling Units being had turned in group control system is adjusted to be more than default plus machine load threshold
When, call the first logic of propositions to judge whether current air-conditioning group control system meets increase handpiece Water Chilling Units
Service condition；3rd control unit, during for being met in increase identifying unit judged result,
Current air-conditioning group control system is controlled to increase a handpiece Water Chilling Units operation.
Further, increase identifying unit includes：Increase judge module, it is first pre- for calling
If logic judgment is in very first time threshold value, if continuously meet following condition：Current air-conditioning group
The handpiece Water Chilling Units run time being had turned in control system is more than the second time threshold；And, it is current empty
The quantity for the handpiece Water Chilling Units being had turned in group control system is adjusted to be less than handpiece Water Chilling Units total quantity；And, it is cold
The temperature drop rate for freezing return main is less than scheduled rate threshold value；And in current air-conditioning group control system
The average load of the handpiece Water Chilling Units of unlatching is more than default plus machine load threshold；Increase determination module,
For when increasing judge module judged result for continuous meet, judging current air-conditioning group control system
Meet the service condition of increase handpiece Water Chilling Units.
Further, the device also includes：Identifying unit is reduced, current air-conditioning group is known in monitoring
The average load for the handpiece Water Chilling Units being had turned in control system is less than the handpiece Water Chilling Units quantity with having turned on
Corresponding preset subtracts machine load threshold, calls the second logic of propositions to judge current air-conditioning group control system
Whether satisfaction reduce handpiece Water Chilling Units service condition；4th control unit, for reducing judgement
Unit judges result is transported when meeting, to control current air-conditioning group control system to reduce by a handpiece Water Chilling Units
OK.
Further, reducing identifying unit includes：Judge module is reduced, it is second pre- for calling
If logic judgment is in the 3rd time threshold, if continuously meet following condition：Current air-conditioning group
The handpiece Water Chilling Units run time being had turned in control system is more than the 4th time threshold；And, it is current empty
The average load for the handpiece Water Chilling Units being had turned in group control system is adjusted less than the handpiece Water Chilling Units with having turned on
Corresponding preset of quantity subtracts machine load threshold；Judge module is reduced, for reducing judge module
When judged result is continuous meets, judge that current air-conditioning group control system is met and reduce handpiece Water Chilling Units
Service condition.
In the air-conditioning group control system provided in the present invention, the portion temperature in original system is sensed
The detection devices such as device are cancelled, and are joined using the temperature detected in handpiece Water Chilling Units in air-conditioning group control system
Amount, with reference to corresponding logical operation, you can ensure the normal operation of air-conditioning group control system, effectively
Ground, which solves to need to install a large amount of monitoring devices in air-conditioning group control system in the prior art, causes system
The problem of system trouble point increases, cost is higher, while reducing all kinds of detection devices, drops significantly
Low construction cost and maintenance cost, further, also reduce the trouble point of air-conditioning group control system
Amount detection.
Brief description of the drawings
Fig. 1 is the structural representation of air-conditioning group control system in the prior art of the invention；
Fig. 2 is the optional stream of one kind of the control method of the air-conditioning group control system of the embodiment of the present invention
Cheng Tu；
Fig. 3 is the air-conditioning team control of the control method of the air-conditioning group control system using the embodiment of the present invention
System structure diagram；
Fig. 4 is a kind of optional of the control device of air-conditioning group control system according to embodiments of the present invention
Structured flowchart；
Fig. 5 is that the another of control device of air-conditioning group control system according to embodiments of the present invention can
The structured flowchart of choosing；
Fig. 6 is that another of the control device of air-conditioning group control system according to embodiments of the present invention can
The structured flowchart of choosing；And
Fig. 7 is that another of the control device of air-conditioning group control system according to embodiments of the present invention can
The structured flowchart of choosing.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.
In the following description when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different accompanying drawings are represented
Same or analogous key element.Embodiment described in following exemplary embodiment is not represented
All embodiments consistent with the present invention.On the contrary, they are only and such as appended claims
The example of the consistent apparatus and method of some aspects be described in detail in book, the present invention.
Embodiment 1
The control method of the air-conditioning group control system provided below in conjunction with the accompanying drawings the present invention is said
It is bright.
The control method for the air-conditioning group control system that the present invention is provided can apply to central air conditioner room
Team control design system in, specifically, Fig. 2 shows the control method of the air-conditioning group control system
A kind of optional flow chart, as shown in Fig. 2 this method may comprise steps of：
S202, obtains in air-conditioning group control system the freezing water supply mean temperatures of handpiece Water Chilling Units and cold
Freeze backwater mean temperature；
S204, air-conditioning group is controlled according to freezing water supply mean temperature and freezing backwater mean temperature
The frequency conversion of chilled water pump in control system.
In the course of work of air-conditioning group control system, without being supplied water and freezing water return pipeline in freezing
It is upper that freezing supply water temperature sensor and freezing return water temperature sensor are set, can be according to cooling-water machine
The freezing water supply mean temperature and freezing backwater mean temperature of group are realized in air-conditioning group control system
The VFC of chilled water pump.When implementing, when system needs to obtain above-mentioned temperature parameters,
The instruction that the corresponding freezing for obtaining handpiece Water Chilling Units of triggering is supplied water, and obtain the cold of handpiece Water Chilling Units
The instruction frozen back, after the instruction supplied water in response to the freezing of the acquisition handpiece Water Chilling Units of triggering, sentences
The opening of electric butterfly valve is freezed in current air-conditioning group control system of breaking；Then, according to freezing electricity
The opening of dynamic butterfly valve, calculates the freezing water supply mean temperature and freezing backwater of handpiece Water Chilling Units
Mean temperature.
When none freezing electric butterfly valve is reached, the freezing for directly calculating handpiece Water Chilling Units is supplied water always
The average temperature value of pipe, is used as the freezing water supply mean temperature of handpiece Water Chilling Units；It is electric when there is freezing
When dynamic butterfly valve is reached, the draw of the freezing supply water temperature for each handpiece Water Chilling Units for reaching position is calculated
Value, is used as the freezing water supply mean temperature of handpiece Water Chilling Units.When none freezing electric butterfly valve reaches position
When, the average temperature value of the freezing return main of handpiece Water Chilling Units is directly calculated, handpiece Water Chilling Units are used as
Freezing backwater mean temperature；When there is freezing electric butterfly valve and reach, position is reached in calculating
The draw value of the freezing return water temperature of each handpiece Water Chilling Units, puts down as the freezing backwater of handpiece Water Chilling Units
Equal temperature.
It is specifically described below：
(1) processing of supply water temperature sensor is freezed, is averaged using the freezing supply water temperature of unit
Temperature replaces the value of the temperature sensor, and computational methods are as follows：When unit, none freezes electronic butterfly
When valve is reached, the mean temperature that unit freezes water main is directly calculated；When there is unit electronic
When butterfly valve is reached, temperature value be equal to electric butterfly valve reach position unit freezing supply water temperature it is flat
Average, it is preferable that according to caliber ratio-dependent mean temperature.It should be noted that in reality
, it is necessary to exclude the unit of communication failure in operating process, computer capacity is not included.
(2) processing of return water temperature sensor is freezed, is averaged using the freezing return water temperature of unit
Temperature replaces the value of the temperature sensor, and computational methods are as follows：When unit, none freezes electronic butterfly
When valve is reached, the mean temperature that unit freezes return main is directly calculated；When there is unit electronic
When butterfly valve is reached, temperature value be equal to electric butterfly valve reach position unit freezing return water temperature it is flat
Average, it is preferable that according to caliber ratio-dependent mean temperature.It should be noted that in reality
, it is necessary to exclude the unit of communication failure in operating process, computer capacity is not included.
Preferably, after using such scheme, following constant difference (5 DEG C) control mode can be passed through
Control freezing variable frequency pump：
The frequency of all operation water pumps of A is consistent, and synchronizes regulation；
B is when chilled water pump is run, and continuously meeting unit freezing electric butterfly valve, none reaches position 60
Second, chilled water pump Close All；
C is when the running status of machine set compressor is closing, (the acquiescence 10 seconds) second per t13
Variable frequency pump frequency reduction F4 is freezed, until frequency is down to lower limit；
The control of D raising frequencies：
When freezing house steward's supply backwater temperature difference ＞ freezing house steward supply backwater temperature difference setting value+△ t1 (acquiescences
1 DEG C), the condition is continuously met t13 seconds after (acquiescence 10 seconds), and freezing variable frequency pump frequency is carried
High F1 (default value 1Hz)；
When freezing house steward supply backwater temperature difference setting value+△ t1 (1 DEG C of acquiescence) >=freezing house steward supplies back
Water temperature difference ＞ freezing house steward supply backwater temperature difference setting value+△ t2 (0.5 DEG C of acquiescence), continuous meet should
After condition t13 seconds, freezing variable frequency pump frequency improves F2；
The control of E frequency reducings：
When freezing house steward's supply backwater temperature difference ＜ freezing house steward supply backwater temperature difference setting value-△ t3 (acquiescences
1 DEG C), after continuously meeting the condition t13 seconds, freezing variable frequency pump frequency reduction F3 (acquiescence 1Hz)；
When freezing house steward supply backwater temperature difference setting value-△ t3 (1 DEG C of acquiescence)≤freezing house steward supplies back
Water temperature difference ＜ freezing house steward supply backwater temperature difference setting value-△ t4 (0.5 DEG C of acquiescence), continuous meet should
After condition t13 seconds, freezing variable frequency pump frequency reduction F4；
Other situations of F are not adjusted.
Above-mentioned offer preferred embodiment in as can be seen that the present invention by original system
Freeze supply water temperature sensor and freezing return water temperature sensor is cancelled, utilize air-conditioning group control system
The temperature parameters detected in middle handpiece Water Chilling Units, with reference to corresponding logical operation, you can ensure empty
The normal operation of group control system is adjusted, efficiently solve needs in air-conditioning group control system in the prior art
The problem of a large amount of monitoring devices cause the increase of service system trouble point, cost is higher is installed, reduced
While all kinds of detection devices, construction cost and maintenance cost are substantially reduced, further,
Reduce the trouble point amount detection of air-conditioning group control system.
In an optional embodiment, additionally provide cold in a kind of cancellation air-conditioning group control system
But the implementation of supply water temperature sensor and cooling backwater temperature sensor, to realize above-mentioned mesh
, this method also includes：Obtain the average temperature of cooling water supply of handpiece Water Chilling Units in air-conditioning group control system
Degree and cooling backwater mean temperature；It is average according to cooling water supply mean temperature and cooling backwater
The frequency conversion of the frequency conversion cooling tower fan of cooling water pump in temperature control air-conditioning group control system.
Obtain air-conditioning group control system in handpiece Water Chilling Units cooling water supply mean temperature and cool back
During water mean temperature, it may include steps of：In response to triggering acquisition handpiece Water Chilling Units it is cold
But the instruction supplied water, judges to cool down the opening of electric butterfly valve in current air-conditioning group control system；
According to the opening of cooling electric butterfly valve, the cooling water supply mean temperature of handpiece Water Chilling Units is calculated；
And, in response to the instruction of the cooling backwater of the acquisition handpiece Water Chilling Units of triggering, judge current air-conditioning
The opening of electric butterfly valve is cooled down in group control system；According to the opening of cooling electric butterfly valve,
Calculate the cooling backwater mean temperature of handpiece Water Chilling Units.
Specifically, when none cooling electric butterfly valve is reached, direct calculating handpiece Water Chilling Units
The average temperature value of water main is cooled down, the cooling water supply mean temperature of handpiece Water Chilling Units is used as；When
When being reached in the presence of cooling electric butterfly valve, the cooling for calculating each handpiece Water Chilling Units for reaching position is supplied water
The draw value of temperature, is used as the cooling water supply mean temperature of handpiece Water Chilling Units.When none cooling is electronic
When butterfly valve is reached, the average temperature value of the cooling backwater house steward of handpiece Water Chilling Units is directly calculated, is made
For the cooling backwater mean temperature of handpiece Water Chilling Units；When there is cooling electric butterfly valve and reach, meter
The draw value of the cooling backwater temperature for each handpiece Water Chilling Units for reaching position is calculated, handpiece Water Chilling Units are used as
Cooling backwater mean temperature.
It is specifically described below：
(1) processing of supply water temperature sensor is cooled down, is averaged using the cooling supply water temperature of unit
Temperature replaces the value of the temperature sensor, and computational methods are as follows：When unit, none cools down electronic butterfly
When valve is reached, the mean temperature that unit cools down water main is directly calculated；When there is unit electronic
When butterfly valve is reached, temperature value be equal to electric butterfly valve reach position unit cooling supply water temperature it is flat
Average, it is preferable that according to caliber ratio-dependent mean temperature.It should be noted that in reality
, it is necessary to exclude the unit of communication failure in operating process, computer capacity is not included.
(2) processing of cooling backwater temperature sensor, using the cooling backwater temperature-averaging of unit
Temperature replaces the value of the temperature sensor, and computational methods are as follows：When unit, none cools down electronic butterfly
When valve is reached, the mean temperature of unit cooling backwater house steward is directly calculated；When there is unit electronic
When butterfly valve is reached, temperature value be equal to electric butterfly valve reach position unit cooling backwater temperature it is flat
Average, it is preferable that according to caliber ratio-dependent mean temperature.It should be noted that in reality
, it is necessary to exclude the unit of communication failure in operating process, computer capacity is not included.
Preferably, after using such scheme, following constant difference (5 DEG C) control mode can be passed through
Control cooling variable frequency pump：
The frequency of all operation water pumps of A keeps always, synchronizing regulation；
B continuously meets unit cooling electric butterfly valve or cooling tower butterfly valve when cooling water pump is run
None reaches position 60 seconds, cooling water pump Close All；
C is immediately switched to workable cooling water pump, frequency when cooling water pump occurs abnormal
It is consistent with current frequency；
D is when the running status of machine set compressor is closing, per t14 seconds (acquiescence 10 seconds),
Variable frequency pump frequency reduction F7 is cooled down, until frequency is down to lower limit；It can be closed when unit is issued
During cooling water pump signal, cooling water pump is closed, when unit issues out cooling water pump, is opened cold
But water pump.
The control of E raising frequencies：
When cooling house steward's supply backwater temperature difference ＞ cooling house steward supply backwater temperature difference setting value+△ t1 (acquiescences
1 DEG C), condition t14 (acquiescence 10 seconds) is continuously met after the second, and cooling variable frequency pump frequency is carried
High F5 (default value 2Hz)；
When cooling house steward supply backwater temperature difference setting value+△ t1 (1 DEG C of acquiescence) >=cooling house steward supplies back
Water temperature difference ＞ cooling house steward supply backwater temperature difference setting value+△ t2 (0.5 DEG C of acquiescence), continuous meet should
After condition t14 seconds, cooling variable frequency pump frequency improves F6；
The control of F frequency reducings：
When cooling house steward's supply backwater temperature difference ＜ cooling house steward supply backwater temperature difference setting value-△ t3 (acquiescences
1 DEG C), condition t14 (acquiescence 10 seconds) is continuously met after the second, cooling variable frequency pump frequency drop
Low F7 (acquiescence 2Hz)；
When cooling house steward supply backwater temperature difference setting value-△ t3 (1 DEG C of acquiescence)≤cooling house steward supplies back
Water temperature difference ＜ cooling house steward supply backwater temperature difference setting value-△ t4 (0.5 DEG C of acquiescence), continuous meet should
After condition t13 seconds, cooling variable frequency pump frequency reduction F8；
Other situations of G are not adjusted.
Above-mentioned offer preferred embodiment in, by original system cooling supply water temperature pass
Sensor and cooling backwater temperature sensor are cancelled, and are examined using in handpiece Water Chilling Units in air-conditioning group control system
The temperature parameters measured, with reference to corresponding logical operation, you can ensureing air-conditioning group control system just
Often operation, create a further reduction Material Cost, the construction cost of air-conditioning group control system, simultaneously
Decrease trouble point amount detection.
The present invention one preferred embodiment in, also such scheme is optimized,
A kind of implementation for cancelling freezing manifold pressure sensor is provided, specifically, by former air-conditioning
Electronic ratio by-passing valve in group control system is changed to self-operated type bypass butterfly valve, self-operated type bypass
Butterfly valve is automatically adjusted according to setting value.By reducing pressure sensor in air-conditioning group control system, enter
Material Cost, the construction cost of air-conditioning group control system are reduced to one step, while decreasing event
Barrier point amount detection.
The present invention one preferred embodiment in, also to the further optimization of such scheme,
A kind of implementation for cancelling water ga(u)ge is provided, to reach the effect for further reducing cost.
When implementing, cancel after water ga(u)ge, for the Loading Control of system, can use as follows
Control method：Monitor and know that the average of the handpiece Water Chilling Units being had turned in current air-conditioning group control system is born
Lotus is more than default plus machine load threshold, calls the first logic of propositions to judge current air-conditioning group control system
Whether satisfaction increases the service condition of handpiece Water Chilling Units；If meeting, current air-conditioning group control system is controlled
One handpiece Water Chilling Units operation of increase.
Judge whether current air-conditioning group control system meets increase cooling-water machine calling the first logic of propositions
, can be in the following way during the service condition of group：The first logic of propositions is called to judge first
In time threshold, if continuously meet following condition：Had turned in current air-conditioning group control system
Handpiece Water Chilling Units run time is more than the second time threshold；And, opened in current air-conditioning group control system
The quantity of the handpiece Water Chilling Units opened is less than handpiece Water Chilling Units total quantity；And, freeze the temperature of return main
Drop rate is less than scheduled rate threshold value；And, the handpiece Water Chilling Units being had turned in current air-conditioning group control system
Average load be more than default plus machine load threshold；If continuous meet, current air-conditioning team control is judged
System meets the service condition of increase handpiece Water Chilling Units.
For example, when implementing, when judging to meet following condition, increase can be controlled
One unit：
A. the unit of previous startup has been run loads interval time more than or equal to unit, it is preferable that
Unit loading interval time can be defaulted as 30 minutes；
B. can come into operation (auto state and fault-free) various kinds of equipment total quantity >=unit fortune
Line number+1；
C. the unit average load ＞ plus machine load setpoint having turned on, it is preferable that plus machine load is set
Definite value is defaulted as 90%, wherein, average load is the average value of operating unit load percentage；
D. house steward's return water temperature drop rate ＜ drop rate setting values are freezed, it is preferable that drop rate setting value is given tacit consent to
For 0.5 DEG C/min；
F. condition (c) and (d) are met within continuous 5 minutes；
After above-mentioned condition a~f is met, it can control to increase a unit.
In the optional embodiment of the present invention, a kind of cancellation water ga(u)ge is additionally provided
Afterwards for system off-load control program, specifically, following control method can be used：Prison
The average load for knowing the handpiece Water Chilling Units being had turned in current air-conditioning group control system is listened to be less than with having opened
Corresponding preset of handpiece Water Chilling Units quantity opened subtracts machine load threshold, calls the second logic of propositions to judge
Whether current air-conditioning group control system meets the service condition for reducing handpiece Water Chilling Units；If meeting, control
Current air-conditioning group control system reduces by a handpiece Water Chilling Units operation.
Judge whether current air-conditioning group control system meets reduction cooling-water machine calling the second logic of propositions
During the service condition of group, it can be realized using following scheme：The second logic of propositions is called to judge
In 3rd time threshold, if continuously meet following condition：Opened in current air-conditioning group control system
The handpiece Water Chilling Units run time opened is more than the 4th time threshold；And, in current air-conditioning group control system
The average load for the handpiece Water Chilling Units having turned on is less than corresponding pre- with the handpiece Water Chilling Units quantity having turned on
If subtracting machine load threshold；If continuous meet, judge that current air-conditioning group control system is met and reduce cold water
The service condition of unit.
For example, when implementing, when judging to meet following condition, it can control to reduce
One unit：
A. the unit of previous startup has been run more than or equal to unit off-load time interval, it is preferable that
Unit off-load time interval can be defaulted as 30 minutes；
B. the average load of handpiece Water Chilling Units is less than corresponding with the handpiece Water Chilling Units quantity having turned on default
Subtract machine load setpoint, for example, when the quantity of operating unit is 3, the unit having turned on
Average load ＜ 3 subtracts machine load setpoint and (preferably, is defaulted as 65%)；Work as operating unit
Quantity be 2 when, the unit average load ＜ 2 having turned on subtracts machine load setpoint (preferably
50%) ground, be defaulted as；
C. condition (b) is met within continuous 5 minutes；
Pass through above control logic, it can be ensured that system can adjust machine according to the workload demand of end
The operation number of units of group.Carried using the increase and decrease of above-mentioned logic control unit, cancel the stream in original system
Gauge, create a further reduction Material Cost, the construction cost of air-conditioning group control system, while
Reduce trouble point amount detection.
Fig. 3 shows that the air-conditioning group control system structure of the control method using this air-conditioning group control system is shown
It is intended to, comparison diagram 1 is understood, using the air-conditioning group control system of this method, reduces outdoor temperature
Sensor, freezing supply water temperature sensor, freezing return water temperature sensor, cooling supply water temperature
The detection devices such as sensor, cooling backwater temperature sensor, pressure sensor, flowmeter, knot
Close corresponding control logic computing, you can ensure the normal operation of air-conditioning group control system, effectively
Solve to need a large amount of monitoring devices are installed in air-conditioning group control system in the prior art and cause service system
The problem of trouble point increases, cost is higher, while reducing all kinds of detection devices, substantially reduces
Construction cost and maintenance cost, further, also reduce the trouble point inspection of air-conditioning group control system
Quantitation.
Embodiment 2
Based on the control method of the air-conditioning group control system provided in above-described embodiment 1, the present invention can
The embodiment 2 of choosing additionally provides a kind of control device 100 of air-conditioning group control system, specifically,
Fig. 4 shows a kind of optional structured flowchart of the device, as shown in figure 4, the device includes：
First acquisition unit 40, the freezing for obtaining handpiece Water Chilling Units in air-conditioning group control system is supplied water average
Temperature and freezing backwater mean temperature；First control unit 42, it is flat for being supplied water according to freezing
The frequency conversion of chilled water pump in equal temperature and freezing backwater mean temperature control air-conditioning group control system.
Further, first acquisition unit includes：First judge module, in response to triggering
Acquisition handpiece Water Chilling Units the instruction supplied water of freezing, judge in current air-conditioning group control system that freezing is electric
The opening of dynamic butterfly valve；First computing module, for the unlatching shape according to freezing electric butterfly valve
State, calculates the freezing water supply mean temperature of handpiece Water Chilling Units；Second judge module, in response to
The instruction of the freezing backwater of the acquisition handpiece Water Chilling Units of triggering, judges cold in current air-conditioning group control system
Freeze the opening of electric butterfly valve；Second computing module, for opening according to freezing electric butterfly valve
State is opened, the freezing backwater mean temperature of handpiece Water Chilling Units is calculated.
Further, the first computing module includes：First calculating sub module, for cold at none
When freezing electric butterfly valve and reaching, the mean temperature for freezing water main of handpiece Water Chilling Units is directly calculated
Value, is used as the freezing water supply mean temperature of handpiece Water Chilling Units；Second calculating sub module, for depositing
When freezing electric butterfly valve and reaching, the freezing for calculating each handpiece Water Chilling Units for reaching position is supplied water temperature
The draw value of degree, is used as the freezing water supply mean temperature of handpiece Water Chilling Units；Second computing module includes：
3rd calculating sub module, for when none freezing electric butterfly valve is reached, directly calculating cold water
The average temperature value of the freezing return main of unit, is used as the average temperature of the freezing backwater of handpiece Water Chilling Units
Degree；4th calculating sub module, for when there is freezing electric butterfly valve and reach, calculating to be reached
The draw value of the freezing return water temperature of each handpiece Water Chilling Units of position, is returned as the freezing of handpiece Water Chilling Units
Water mean temperature.
Further, as shown in figure 5, the device also includes：Second acquisition unit 50, is used for
The cooling water supply mean temperature and cooling backwater for obtaining handpiece Water Chilling Units in air-conditioning group control system are average
Temperature；Second control unit 52, for according to cooling water supply mean temperature and cooling back level
The frequency conversion of the frequency conversion cooling tower fan of cooling water pump in equal temperature control air-conditioning group control system.
Further, second acquisition unit includes：3rd judge module, in response to triggering
Acquisition handpiece Water Chilling Units the instruction supplied water of cooling, judge in current air-conditioning group control system that cooling is electric
The opening of dynamic butterfly valve；3rd computing module, for the unlatching shape according to cooling electric butterfly valve
State, calculates the cooling water supply mean temperature of handpiece Water Chilling Units；4th judge module, in response to
The instruction of the cooling backwater of the acquisition handpiece Water Chilling Units of triggering, judges cold in current air-conditioning group control system
But the opening of electric butterfly valve；4th computing module, for opening according to cooling electric butterfly valve
State is opened, the cooling backwater mean temperature of handpiece Water Chilling Units is calculated.
Further, the 3rd computing module includes：5th calculating sub module, for cold at none
But when electric butterfly valve is reached, the mean temperature of the cooling water main of handpiece Water Chilling Units is directly calculated
Value, is used as the cooling water supply mean temperature of handpiece Water Chilling Units；6th calculating sub module, for depositing
When cooling down electric butterfly valve and reaching, the cooling for calculating each handpiece Water Chilling Units for reaching position is supplied water temperature
The draw value of degree, is used as the cooling water supply mean temperature of handpiece Water Chilling Units；4th computing module includes：
7th calculating sub module, for when none cooling electric butterfly valve is reached, directly calculating cold water
The average temperature value of the cooling backwater house steward of unit, is used as the average temperature of the cooling backwater of handpiece Water Chilling Units
Degree；8th calculating sub module, for when there is cooling electric butterfly valve and reach, calculating to be reached
The draw value of the cooling backwater temperature of each handpiece Water Chilling Units of position, is used as cooling back for handpiece Water Chilling Units
Water mean temperature.
Further, as shown in fig. 6, the device also includes：Increase identifying unit 60, be used for
The average load for knowing the handpiece Water Chilling Units being had turned in current air-conditioning group control system is monitored more than default
Plus during machine load threshold, call the first logic of propositions to judge whether current air-conditioning group control system meets
Increase the service condition of handpiece Water Chilling Units；3rd control unit 62, for sentencing in increase identifying unit
Disconnected result is run when meeting, to control current air-conditioning group control system to increase a handpiece Water Chilling Units.
Further, increase identifying unit includes：Increase judge module, it is first pre- for calling
If logic judgment is in very first time threshold value, if continuously meet following condition：Current air-conditioning group
The handpiece Water Chilling Units run time being had turned in control system is more than the second time threshold；And, it is current empty
The quantity for the handpiece Water Chilling Units being had turned in group control system is adjusted to be less than handpiece Water Chilling Units total quantity；And, it is cold
The temperature drop rate for freezing return main is less than scheduled rate threshold value；And in current air-conditioning group control system
The average load of the handpiece Water Chilling Units of unlatching is more than default plus machine load threshold；Increase determination module,
For when increasing judge module judged result for continuous meet, judging current air-conditioning group control system
Meet the service condition of increase handpiece Water Chilling Units.
Further, as shown in fig. 7, the device also includes：Identifying unit 70 is reduced, is monitored
Know that the average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is less than with having turned on
Handpiece Water Chilling Units quantity it is corresponding it is default subtract machine load threshold, call the second logic of propositions to judge to work as
Whether preceding air-conditioning group control system meets the service condition for reducing handpiece Water Chilling Units；4th control unit 72,
For when reducing identifying unit judged result to meet, controlling current air-conditioning group control system to reduce
One handpiece Water Chilling Units operation.
Further, reducing identifying unit includes：Judge module is reduced, it is second pre- for calling
If logic judgment is in the 3rd time threshold, if continuously meet following condition：Current air-conditioning group
The handpiece Water Chilling Units run time being had turned in control system is more than the 4th time threshold；And, it is current empty
The average load for the handpiece Water Chilling Units being had turned in group control system is adjusted less than the handpiece Water Chilling Units with having turned on
Corresponding preset of quantity subtracts machine load threshold；Judge module is reduced, for reducing judge module
When judged result is continuous meets, judge that current air-conditioning group control system is met and reduce handpiece Water Chilling Units
Service condition.
Herein it should be noted that the first above-mentioned control unit, the second control unit, the 3rd
Control unit, the 4th control unit can be independent units, can also be integrated in a control
On device, communicate with one another realize control each other, also can be by a control comprising respective function
Device processed is realized；Above-mentioned first acquisition unit, second acquisition unit, increase identifying unit, subtract
Few identifying unit can be independent unit, can also be integrated on a control device, each other
Between communicate with one another and realize control, can also be realized by a controller comprising respective function, this
Invention is not limited to this.
On the device in above-described embodiment, wherein unit, module performs the specific of operation
Mode is described in detail in the embodiment about this method, will not do herein in detail
Illustrate explanation.
It can be seen from the foregoing description that the present invention senses the freezing supply water temperature in original system
Device and freezing return water temperature sensor are cancelled, and are detected using in handpiece Water Chilling Units in air-conditioning group control system
The temperature parameters arrived, with reference to corresponding logical operation, you can ensure the normal of air-conditioning group control system
Operation, efficiently solve needs to install a large amount of monitoring devices in air-conditioning group control system in the prior art
Cause the problem of service system trouble point increases, cost is higher, reduce the same of all kinds of detection devices
When, construction cost and maintenance cost are substantially reduced, further, air-conditioning team control system is also reduced
The trouble point amount detection of system.
Those skilled in the art, will be easy after considering specification and putting into practice invention disclosed herein
Expect other embodiments of the present invention.The application is intended to any modification of the present invention, use
Way or adaptations, these modifications, purposes or adaptations follow the one of the present invention
As property principle and including the present invention common knowledge or conventional techniques in the art do not invented
Means.Description and embodiments are considered only as exemplary, true scope and spirit of the invention
Pointed out by following claim.
It should be appreciated that the invention is not limited in be described above and be shown in the drawings
Precision architecture, and various modifications and changes can carried out without departing from the scope.The present invention
Scope only limited by appended claim.
Claims (23)
1. a kind of control method of air-conditioning group control system, it is characterised in that including：
Obtain the freezing water supply mean temperature of handpiece Water Chilling Units and freezing backwater in air-conditioning group control system
Mean temperature；
According to the freezing water supply mean temperature and freezing backwater mean temperature control
The frequency conversion of chilled water pump in air-conditioning group control system.
2. according to the method described in claim 1, it is characterised in that the acquisition air-conditioning team control system
The freezing water supply mean temperature of handpiece Water Chilling Units and freezing backwater mean temperature in system, including：
The instruction that freezing in response to the acquisition handpiece Water Chilling Units of triggering is supplied water, judges current air-conditioning group
The opening of electric butterfly valve is freezed in control system；
According to the opening of the freezing electric butterfly valve, the freezing for calculating the handpiece Water Chilling Units is supplied
Water mean temperature；And,
In response to the instruction of the freezing backwater of the acquisition handpiece Water Chilling Units of triggering, current air-conditioning group is judged
The opening of electric butterfly valve is freezed in control system；
According to the opening of the freezing electric butterfly valve, the freezing for calculating the handpiece Water Chilling Units is returned
Water mean temperature.
3. method according to claim 2, it is characterised in that described according to the freezing electricity
The opening of dynamic butterfly valve, calculates the freezing water supply mean temperature of the handpiece Water Chilling Units, including：
When none described freezing electric butterfly valve is reached, the cold of the handpiece Water Chilling Units is directly calculated
Freeze the average temperature value of water main, be used as the freezing water supply mean temperature of the handpiece Water Chilling Units；
When there is the freezing electric butterfly valve and reach, each handpiece Water Chilling Units for reaching position are calculated
Freezing supply water temperature draw value, be used as the freezing water supply mean temperature of the handpiece Water Chilling Units.
4. method according to claim 2, it is characterised in that described according to the freezing electricity
The opening of dynamic butterfly valve, calculates the freezing backwater mean temperature of the handpiece Water Chilling Units, including：
When none described freezing electric butterfly valve is reached, the cold of the handpiece Water Chilling Units is directly calculated
Freeze the average temperature value of return main, be used as the freezing backwater mean temperature of the handpiece Water Chilling Units；
When there is the freezing electric butterfly valve and reach, each handpiece Water Chilling Units for reaching position are calculated
Freezing return water temperature draw value, be used as the freezing backwater mean temperature of the handpiece Water Chilling Units.
5. according to the method described in claim 1, it is characterised in that also include：
Obtain the cooling water supply mean temperature and cooling backwater of handpiece Water Chilling Units in air-conditioning group control system
Mean temperature；
According to the cooling water supply mean temperature and cooling backwater mean temperature control
The frequency conversion of the frequency conversion cooling tower fan of cooling water pump in air-conditioning group control system.
6. method according to claim 5, it is characterised in that the acquisition air-conditioning team control system
The cooling water supply mean temperature and cooling backwater mean temperature of handpiece Water Chilling Units in system, including：
The instruction that cooling in response to the acquisition handpiece Water Chilling Units of triggering is supplied water, judges current air-conditioning group
The opening of electric butterfly valve is cooled down in control system；
According to the opening of the cooling electric butterfly valve, the cooling for calculating the handpiece Water Chilling Units is supplied
Water mean temperature；And,
In response to the instruction of the cooling backwater of the acquisition handpiece Water Chilling Units of triggering, current air-conditioning group is judged
The opening of electric butterfly valve is cooled down in control system；
According to the opening of the cooling electric butterfly valve, cooling back for the handpiece Water Chilling Units is calculated
Water mean temperature.
7. method according to claim 6, it is characterised in that described according to the cooling electricity
The opening of dynamic butterfly valve, calculates the cooling water supply mean temperature of the handpiece Water Chilling Units, including：
When none described cooling electric butterfly valve is reached, the cold of the handpiece Water Chilling Units is directly calculated
But the average temperature value of water main, is used as the cooling water supply mean temperature of the handpiece Water Chilling Units；
When there is the cooling electric butterfly valve and reach, each handpiece Water Chilling Units for reaching position are calculated
Cooling supply water temperature draw value, be used as the cooling water supply mean temperature of the handpiece Water Chilling Units.
8. method according to claim 6, it is characterised in that described according to the cooling electricity
The opening of dynamic butterfly valve, calculates the cooling backwater mean temperature of the handpiece Water Chilling Units, including：
When none described cooling electric butterfly valve is reached, the cold of the handpiece Water Chilling Units is directly calculated
But the average temperature value of return main, is used as the cooling backwater mean temperature of the handpiece Water Chilling Units；
When there is the cooling electric butterfly valve and reach, each handpiece Water Chilling Units for reaching position are calculated
Cooling backwater temperature draw value, be used as the cooling backwater mean temperature of the handpiece Water Chilling Units.
9. according to the method described in claim 1, it is characterised in that in the air-conditioning group control system
Including pressure bypass valve, the pressure bypass valve is that self-operated type bypasses butterfly valve.
10. according to the method described in claim 1, it is characterised in that described according to described cold
Freeze water supply mean temperature and the freezing backwater mean temperature is controlled in the air-conditioning group control system
After the frequency conversion of chilled water pump, in addition to：
Monitoring knows that the average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is more than
Default plus machine load threshold, calls the first logic of propositions to judge whether current air-conditioning group control system is full
The service condition of foot increase handpiece Water Chilling Units；
If meeting, current air-conditioning group control system is controlled to increase a handpiece Water Chilling Units operation.
11. method according to claim 10, it is characterised in that it is described call it is first pre-
If whether the current air-conditioning group control system of logic judgment meets the service condition of increase handpiece Water Chilling Units, bag
Include：
The first logic of propositions is called to judge in very first time threshold value, if continuously to meet following bar
Part：
The handpiece Water Chilling Units run time being had turned in current air-conditioning group control system is more than the second time threshold
Value；And,
The quantity for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is less than handpiece Water Chilling Units sum
Amount；And,
The temperature drop rate for freezing return main is less than scheduled rate threshold value；And,
The average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is more than default plus machine
Load threshold；
If continuous meet, judge that current air-conditioning group control system meets the operation bar of increase handpiece Water Chilling Units
Part.
12. according to the method described in claim 1, it is characterised in that described according to described cold
Freeze water supply mean temperature and the freezing backwater mean temperature is controlled in the air-conditioning group control system
After the frequency conversion of chilled water pump, in addition to：
Monitoring knows that the average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is less than
It is corresponding with the handpiece Water Chilling Units quantity having turned on it is default subtract machine load threshold, call second pre-
If whether the current air-conditioning group control system of logic judgment meets the service condition for reducing handpiece Water Chilling Units；
If meeting, current air-conditioning group control system is controlled to reduce by a handpiece Water Chilling Units operation.
13. method according to claim 12, it is characterised in that it is described call it is second pre-
If whether the current air-conditioning group control system of logic judgment meets the service condition for reducing handpiece Water Chilling Units, bag
Include：
The second logic of propositions is called to judge in the 3rd time threshold, if continuously to meet following bar
Part：
The handpiece Water Chilling Units run time being had turned in current air-conditioning group control system is more than the 4th time threshold
Value；And,
The average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system be less than with it is described
Corresponding preset of the handpiece Water Chilling Units quantity of unlatching subtracts machine load threshold；
If continuous meet, judge that current air-conditioning group control system meets the operation bar for reducing handpiece Water Chilling Units
Part.
14. a kind of control device of air-conditioning group control system, it is characterised in that including：
First acquisition unit, the freezing for obtaining handpiece Water Chilling Units in air-conditioning group control system is supplied water flat
Equal temperature and freezing backwater mean temperature；
First control unit, for being returned according to the freezing water supply mean temperature and the freezing
Water mean temperature controls the frequency conversion of chilled water pump in the air-conditioning group control system.
15. device according to claim 14, it is characterised in that described first obtains single
Member includes：
First judge module, the finger that the freezing for the acquisition handpiece Water Chilling Units in response to triggering is supplied water
Order, judges to freeze the opening of electric butterfly valve in current air-conditioning group control system；
First computing module, for the opening according to the freezing electric butterfly valve, calculates institute
State the freezing water supply mean temperature of handpiece Water Chilling Units；
Second judge module, the finger for the freezing backwater of the acquisition handpiece Water Chilling Units in response to triggering
Order, judges to freeze the opening of electric butterfly valve in current air-conditioning group control system；
Second computing module, for the opening according to the freezing electric butterfly valve, calculates institute
State the freezing backwater mean temperature of handpiece Water Chilling Units.
16. device according to claim 15, it is characterised in that
First computing module includes：
First calculating sub module, for when none described freezing electric butterfly valve is reached, directly
The average temperature value of the freezing water main of the handpiece Water Chilling Units is calculated, the handpiece Water Chilling Units are used as
Freezing water supply mean temperature；
Second calculating sub module, for when there is the freezing electric butterfly valve and reach, calculating
The draw value of the freezing supply water temperature of each handpiece Water Chilling Units of position is reached, the handpiece Water Chilling Units are used as
Freezing water supply mean temperature；
Second computing module includes：
3rd calculating sub module, for when none described freezing electric butterfly valve is reached, directly
The average temperature value of the freezing return main of the handpiece Water Chilling Units is calculated, the handpiece Water Chilling Units are used as
Freezing backwater mean temperature；
4th calculating sub module, for when there is the freezing electric butterfly valve and reach, calculating
The draw value of the freezing return water temperature of each handpiece Water Chilling Units of position is reached, the handpiece Water Chilling Units are used as
Freezing backwater mean temperature.
17. device according to claim 14, it is characterised in that also include：
Second acquisition unit, the cooling for obtaining handpiece Water Chilling Units in air-conditioning group control system is supplied water flat
Equal temperature and cooling backwater mean temperature；
Second control unit, for according to the cooling water supply mean temperature and described cooling back
Water mean temperature controls the change of the frequency conversion cooling tower fan of cooling water pump in the air-conditioning group control system
Frequently.
18. device according to claim 17, it is characterised in that described second obtains single
Member includes：
3rd judge module, the finger that the cooling for the acquisition handpiece Water Chilling Units in response to triggering is supplied water
Order, judges to cool down the opening of electric butterfly valve in current air-conditioning group control system；
3rd computing module, for the opening according to the cooling electric butterfly valve, calculates institute
State the cooling water supply mean temperature of handpiece Water Chilling Units；
4th judge module, the finger for the cooling backwater of the acquisition handpiece Water Chilling Units in response to triggering
Order, judges to cool down the opening of electric butterfly valve in current air-conditioning group control system；
4th computing module, for the opening according to the cooling electric butterfly valve, calculates institute
State the cooling backwater mean temperature of handpiece Water Chilling Units.
19. device according to claim 18, it is characterised in that
3rd computing module includes：
5th calculating sub module, for when none described cooling electric butterfly valve is reached, directly
The average temperature value of the cooling water main of the handpiece Water Chilling Units is calculated, the handpiece Water Chilling Units are used as
Cooling water supply mean temperature；
6th calculating sub module, for when there is the cooling electric butterfly valve and reach, calculating
The draw value of the cooling supply water temperature of each handpiece Water Chilling Units of position is reached, the handpiece Water Chilling Units are used as
Cooling water supply mean temperature；
4th computing module includes：
7th calculating sub module, for when none described cooling electric butterfly valve is reached, directly
The average temperature value of the cooling backwater house steward of the handpiece Water Chilling Units is calculated, the handpiece Water Chilling Units are used as
Cooling backwater mean temperature；
8th calculating sub module, for when there is the cooling electric butterfly valve and reach, calculating
The draw value of the cooling backwater temperature of each handpiece Water Chilling Units of position is reached, the handpiece Water Chilling Units are used as
Cooling backwater mean temperature.
20. device according to claim 14, it is characterised in that also include：
Increase identifying unit, the cold water being had turned in current air-conditioning group control system is known for monitoring
When the average load of unit is more than default plus machine load threshold, the first logic of propositions is called to judge to work as
Whether preceding air-conditioning group control system meets the service condition of increase handpiece Water Chilling Units；
3rd control unit, for when the increase identifying unit judged result is meets, controlling
Making current air-conditioning group control system increases a handpiece Water Chilling Units operation.
21. device according to claim 20, it is characterised in that the increase judges single
Member includes：
Increase judge module, for calling the first logic of propositions to judge in very first time threshold value,
Whether following condition is continuously met：The handpiece Water Chilling Units operation being had turned in current air-conditioning group control system
Time is more than the second time threshold；And, the handpiece Water Chilling Units being had turned in current air-conditioning group control system
Quantity be less than handpiece Water Chilling Units total quantity；And, the temperature drop rate of freezing return main, which is less than, to be preset
Rate-valve value；And the average load for the handpiece Water Chilling Units being had turned in current air-conditioning group control system is more than
Default plus machine load threshold；
Increase determination module, for when the increase judge module judged result is continuous meets,
Judge that current air-conditioning group control system meets the service condition of increase handpiece Water Chilling Units.
22. device according to claim 14, it is characterised in that also include：
Identifying unit is reduced, the handpiece Water Chilling Units known and had turned in current air-conditioning group control system are monitored
Average load be less than and corresponding with the handpiece Water Chilling Units quantity having turned on default subtract machine load threshold
Value, calls the second logic of propositions to judge whether current air-conditioning group control system meets reduction handpiece Water Chilling Units
Service condition；
4th control unit, for when the reduction identifying unit judged result is meets, controlling
Make current air-conditioning group control system and reduce by a handpiece Water Chilling Units operation.
23. device according to claim 22, it is characterised in that the reduction judges single
Member includes：
Judge module is reduced, for calling the second logic of propositions to judge in the 3rd time threshold,
Whether following condition is continuously met：The handpiece Water Chilling Units operation being had turned in current air-conditioning group control system
Time is more than the 4th time threshold；And, the handpiece Water Chilling Units being had turned in current air-conditioning group control system
Average load be less than and corresponding with the handpiece Water Chilling Units quantity having turned on default subtract machine load threshold
Value；
Judge module is reduced, for when the reduction judge module judged result is continuous meets,
Judge that current air-conditioning group control system meets the service condition for reducing handpiece Water Chilling Units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610100953.4A CN107120779B (en) | 2016-02-24 | 2016-02-24 | The control method and device of air-conditioning group control system |
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| CN110686381A (en) * | 2019-10-15 | 2020-01-14 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
| CN112378046A (en) * | 2020-11-24 | 2021-02-19 | 珠海格力电器股份有限公司 | Automatic diagnosis method of air conditioner and air conditioner |
| CN112484233A (en) * | 2020-11-27 | 2021-03-12 | 珠海格力电器股份有限公司 | Control method and device of direct expansion type air conditioning unit system and air conditioner |
| CN115200296A (en) * | 2022-07-22 | 2022-10-18 | 富联智能工坊(郑州)有限公司 | Ice machine group control method, device, equipment and computer readable storage medium |
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