CN102003748A - Modular water chilling unit and intelligent control method thereof - Google Patents
Modular water chilling unit and intelligent control method thereof Download PDFInfo
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- CN102003748A CN102003748A CN2009100423359A CN200910042335A CN102003748A CN 102003748 A CN102003748 A CN 102003748A CN 2009100423359 A CN2009100423359 A CN 2009100423359A CN 200910042335 A CN200910042335 A CN 200910042335A CN 102003748 A CN102003748 A CN 102003748A
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/002—Liquid coolers, e.g. beverage cooler
Abstract
The invention discloses a modular water chilling unit and an intelligent control method thereof. When multiple modular units operate at the same time, the operation times of compressors are relatively balanced, and the service life of each compressor is prolonged. The modular water chilling unit comprises a control device and more than one outdoor unit module; each outdoor unit module comprises more than one compressor; a controller codes the compressor; a coding device of each compressor is provided with mutually different identification codes; the control device comprises a code reading module, a sorting module and an instruction output module; the code reading module reads the identification codes of each compressor; the sorting module sorts the numbers of the closing queues and opening queues of the compressors; and the instruction output module instructs the compressors to start or stop running sequentially according to the numbers of the closing queues and opening queues of the compressors.
Description
Technical field
The invention belongs to air conditioner cold water unit control field, relate in particular to a kind of modularization handpiece Water Chilling Units and intelligence control method thereof.
Background technology
The air-conditioning unit of modularization control of the prior art, when multimode is used simultaneously, traditional start stop mode easily causes the frequent and long-time running of the forward unit in dial-up address, unit starting after the dial-up address is leaned on is less running time, also there is the unbalanced situation of each system operation time in the unit of multisystem, thereby causes the part compressor shorter service life.
And the air-conditioning unit of the modularization of prior art control, start stop mode adopts the start and stop of Water temp controller group, when unit start and stop and end side load variations, water temperature is the value of a variation, an instantaneous value during unit just changes by water temperature is judged, this is the determination methods that can not reflect accurately that water system changes, and may cause the part of module frequent start-stop, and makes the water temperature of water system change violent.
Therefore, above-mentioned control method does not reach the effect of protection compressor and energy savings.
Summary of the invention
The object of the present invention is to provide a kind of modularization handpiece Water Chilling Units and intelligence control method thereof, when a plurality of module units move simultaneously, make relative equilibrium running time of each compressor, prolong each compressor service life.
Another object of the present invention is, a kind of modularization handpiece Water Chilling Units and intelligence control method thereof are provided, and keeps water temperature basicly stable, can not occur than great fluctuation process.
The present invention is achieved through the following technical solutions:
The modularization handpiece Water Chilling Units includes control device, described each the off-premises station module of more than one off-premises station module includes: the compressor more than; Wherein, control device is encoded to every compressor, and each described compressor is provided with mutually different recognition coding; Described control device includes reads a yard module, order module and instruction output module; Describedly read the recognition coding that yard module reads each described compressor, order module arranges the formation of described compression office and the numbering of the formation of opening, and instructs the numbering of formation of formation that output module leaves according to described compressor and pass to instruct each described compressor to start by sequence or out of service.
Described control device includes rate temperature change computing module and judge module, described control device is according to the temperature of temperature sensor collecting temperature, write down current air-conditioning inflow temperature value, and described rate temperature change computing module calculates temperature drop rate or temperature rise rate value; Described judge module instructs each described compressor start or out of service according to current air-conditioning inflow temperature value and temperature drop rate or temperature rise rate value.
The intelligence control method of above-mentioned modularization handpiece Water Chilling Units, the be in operation numbering of formation that compressor is closed by the start and stop order and the formation of opening of described control device, the start and stop method of " opening earlier earlier and stopping, stop earlier to open earlier " by compressor is controlled that each described compressor is started by sequence or is out of service.
Beneficial effect of the present invention is as follows:
Modularization handpiece Water Chilling Units of the present invention and intelligence control method thereof, control device is encoded to every compressor, and each compressor is provided with mutually different recognition coding; Control device includes reads a yard module, order module and instruction output module; Read the recognition coding that yard module reads each described compressor, order module arranges the formation of described compression office and the numbering of the formation of opening, and instructs the numbering of formation of formation that output module leaves according to described compressor and pass to instruct each described compressor to start by sequence or out of service; And control device includes rate temperature change computing module and judge module.The be in operation numbering of formation that compressor is closed by the start and stop order and the formation of opening of described control device, the start and stop method of ' opening earlier earlier and stopping, stop earlier to open earlier ' by compressor are controlled that each described compressor is started by sequence or are out of service.Therefore, each module running time will be more balanced, can prolong each compressor average life; In addition, in different temperature ranges, be auxiliary reference with temperature drop (liters) speed of water temperature, with the i.e. true load condition of end of the real change of water system, accurately control the start and stop of unit.And can judge control with the real change situation of water system, the water temperature mean change speed of promptly getting in a period of time judges that temperature drop rate is in different temperature range value differences.With the refrigeration is example, higher in water temperature, but temperature drop rate is bigger the time, and follow-up unit can not opened, and under the traditional control method, follow-up unit then can be closed after the of short duration unlatching again.The phenomenon of part of generating units frequent start-stop can not occur, the fluctuating temperature of water system is less, and control in the reasonable scope.
Description of drawings
Fig. 1 is the flow chart of the intelligence control method of modularization handpiece Water Chilling Units of the present invention;
Fig. 2 is the formation of opening of intelligence control method embodiment 1 of modularization handpiece Water Chilling Units of the present invention and the queue order flow chart of pass;
Fig. 3 is the temperature changing curve diagram of the intelligence control method of modularization handpiece Water Chilling Units of the present invention.
The specific embodiment
The present invention discloses a kind of modularization handpiece Water Chilling Units, includes control device, described each the off-premises station module of more than one off-premises station module includes: the compressor more than; Wherein, control device is encoded to every described compressor, and each described compressor is provided with mutually different recognition coding; Described control device includes reads a yard module, order module and instruction output module; Describedly read the recognition coding that yard module reads each described compressor, order module arranges the formation of described compression office and the numbering of the formation of opening, and instructs the numbering of formation of formation that output module leaves according to described compressor and pass to instruct each described compressor to start by sequence or out of service.
Described modularization handpiece Water Chilling Units also comprises temperature sensor, air cooling heat exchanger and water-side heat, and described temperature sensor is positioned at the water inlet of water-side heat.Described control device includes rate temperature change computing module and judge module, described control device is according to the temperature of temperature sensor collecting temperature, write down current air-conditioning unit water-side heat inflow temperature value, and described rate temperature change computing module calculates temperature drop rate or temperature rise rate value; Described judge module instructs each described compressor start or out of service according to current air-conditioning inflow temperature value and temperature drop rate or temperature rise rate value.
The intelligence control method of above-mentioned modularization handpiece Water Chilling Units, the be in operation numbering of formation that compressor is closed by the start and stop order and the formation of opening of described control device, the start and stop method of " opening earlier earlier and stopping, stop earlier to open earlier " by compressor is controlled that each described compressor is started by sequence or is out of service.
Ask for an interview Fig. 1, the intelligence control method of described modularization handpiece Water Chilling Units comprises the steps:
Step 1: control device is arranged out the formation of compression office, and the formation of opening is not for having;
Step 2: control device judges whether to start compressor, in this way, enters step 3, as not, enters step 5;
Step 3: first compressor in the formation of the pass of modularization handpiece Water Chilling Units is opened, and enters step 4;
Step 4: the last tagmeme of the formation that first compressor in the formation that will close moves on to out from the formation of closing;
Step 5: control device judges whether to want close compressor, in this way, enters step 6, as not, enters step 2;
Step 6: first compressor in the formation of pass make and break enters step 7;
Step 7: the last tagmeme that first compressor in the formation of opening is moved on to the formation of pass.
Promptly " opening earlier and stop; stop earlier to open earlier " implementation method earlier is: compile for every compressor one number, and the formation and the formation that compressor leaves of setting up a compression office, need out each time compressor, all be to allow in the formation of closing first compressor open, then with the team head of this compressor from the formation of pass, the tail of the queue of the formation that moves on to out; Needing to close compressor each time, all is that first compressor in the formation of getting out of the way cuts out, and then this compressor is moved on to the tail of the queue of the formation of pass from team's head of the formation of opening.
Embodiment 1:
Ask for an interview Fig. 2, the queue order flow process of formation of opening in the intelligence control method of described modularization handpiece Water Chilling Units and pass is:
At first control device is numbered the numbering of formation of closing and the formation of opening to compressor, for example whole system has 32 looms, the formation 0.1.2.3.4 that closes ... .31, the formation of opening: do not have, perhaps the formation 10.11.12.13 of Guaning ... the 31 formation 0.1.2.3 that open ... .9. this information is stored in the memory of control device CPU:
Illustrate implementation procedure below:
Compressor start and stop example is:
Open 7 compressors earlier, close 5 compressors, open 1 compressor, close 1 compressor again, open 26 compressors again, close 28 compressors then.
Implementation procedure is as follows:
Every compressor has a definite numbering by the hardware of mainboard, and corresponding relation is as follows:
Module 1 compressor 1, module 1 compressor 2, module 2 compressors 1, module 2 compressors 2 ... module 16 compressors 1, module 16 compressors 2 correspond to 0,1,2,3 respectively ... 30,31.
Just having begun to compress machine-operated formation is 32 compressors, is 0,1,2 in order ... 31; And the formation that compressor leaves is 0 compressor;
The first step need be driven compressor, allows first compressor (be No. 0 compressor this moment) that compresses in the machine-operated formation open, and in the formation that after the unlatching this compressor is moved on to out from the formation of closing, two formations are as follows:
The formation of closing is 1,2 in order ... 31; And the formation of opening has a compressor, is 0.
Second step, need open 6 compressors again, then the compressor of opening in order is 1,2,3,4,5,6, two formations are as follows:
The formation of closing is 7,8,9 in order ... 31; And the formation of opening is 0,1,2,3,4,5,6;
The 3rd step, need to close compressor, then close first compressor (i.e. No. 0 compressor) in the formation of make and break, after closing, formation is as follows:
The formation of closing is 7,8,9 in order ... 31,0; And the formation of opening is 1,2,3,4,5,6;
The 4th step, need close 4 compressors again, then close 1,2,3,4 in order, after closing, formation is as follows:
The formation of closing is 7,8,9 in order ... 31,0,1,2,3,4; And the formation of opening is 5,6;
The 5th step, need drive compressor, open 7, after the unlatching, formation is as follows:
The formation of closing is 8,9 in order ... 31,0,1,2,3,4; And the formation of opening is 5,6,7;
The 6th step needed to close compressor, closed 5, and after closing, formation is as follows:
The formation of closing is 8,9 in order ... 31,0,1,2,3,4,5; And the formation of opening is 6,7;
The 7th step, need open 26 compressors, be respectively 8,9 ... 31,0,1, after the unlatching, formation is as follows:
The formation of closing is 2,3,4,5 in order; And the formation of opening is 6,7,8,9 ... 31,0,1;
The 8th step needed to close 28 compressors, was respectively 6,7,8,9 ... 31,0,1, after closing, formation is as follows:
The formation of closing is 2,3,4,5,6,7,8,9 in order ... 31,0,1; And the formation of opening does not have compressor.
Embodiment 2:
The method of " opening earlier and stop, stop earlier to open earlier " start and stop control earlier is with 3 modules, and two compressors of every module are example: compressor opening sequence for the first time is:
Module 1 press 1 startup → module 1 press 2 startup → modules 2 press 1 startup → module 2 press 2 startup → modules 3 press 1 startup → module 3 press 2 startup → modules 1 press 1 is shut down
Then the compressor closing sequence is subsequently:
Module 1 press 2 shutdown → modules 2 press 1 shutdown → module 2 press 2 shutdown → modules 3 press 1 shutdown → module 3 press 2 are shut down
Power-up sequence is for the second time:
Module 1 press 2 startup → modules 2 press 1 startup → module 2 press 2 startup → modules 3 press 1 startup → module 3 press 2 startup → modules 1 press 1 starts
After this shutdown sequence carries out start and stop control by ' open earlier earlier and stop, stop earlier to open earlier ' principle successively.
Ask for an interview Fig. 3, the intelligence control method of modularization handpiece Water Chilling Units comprises that also water temperature temperature drop or raising speed rate control method are:
By the temperature sensor collecting temperature, every interval special time Δ t writes down temperature value, and do corresponding calculated: wherein T1 is a last record value, and T2 is the record value of current time, and then temperature drop rate this moment is that (T1-T2)/Δ t or temperature rise rate are (T2-T1)/Δ t; Interval of delta t is after the time, and then the record temperature value, writes down temperature again, and calculates rate of change once more; Described control device write down current air-conditioning inflow temperature value, and described rate temperature change computing module calculates temperature drop rate or temperature rise rate value according to the temperature of temperature sensor collecting temperature; Described judge module instructs each described compressor start or out of service according to current air-conditioning inflow temperature value and temperature drop rate or temperature rise rate value.
The intelligence control method of described modularization handpiece Water Chilling Units, comprise that also water temperature temperature drop or raising speed rate control determination methods is: be higher than at inflow temperature under the situation of setting value, greater than the criterion value, then the control device instruction need not be opened other compressors that still are in closed condition again as temperature drop rate.
The intelligence control method of described modularization handpiece Water Chilling Units is major control with the water temperature interval, and temperature drop (liter) speed can adapt to the end side load variations more accurately for auxiliary control, keeps water temperature basicly stable, avoids occurring the violent situation of fluctuating temperature.Example: making cold space-time, to transfer in coolant-temperature gage setting value be 7 ℃, and when 10 ℃～12 ℃ of inflow temperatures, greater than 1.0 ℃/min, then the subsequent compression machine is no longer opened as temperature drop rate; Under this control mode, the more than list of system is a Rule of judgment with the temperature, and being aided with temperature drop rate is Rule of judgment; Even under the inflow temperature condition with higher, bigger as temperature drop rate, illustrate that the terminal load of unit output load this moment is big, follow-uply need not open other compressors again.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and various improvement and the variation carried out all belong to protection scope of the present invention.
Claims (7)
1. the modularization handpiece Water Chilling Units includes control device, more than one off-premises station module, and described each off-premises station module includes: the compressor more than; It is characterized in that: control device can be encoded to every described compressor, and each described compressor is provided with mutually different recognition coding; Described control device includes reads a yard module, order module and instruction output module; Describedly read the recognition coding that yard module reads each described compressor, order module arranges the formation of described compression office and the numbering of the formation of opening, and instructs the numbering of formation of formation that output module leaves according to described compressor and pass to indicate described compressor to start by sequence or out of service.
2. modularization handpiece Water Chilling Units as claimed in claim 1, it is characterized in that: described control device includes rate temperature change computing module and judge module, described control device is according to the temperature of temperature sensor collecting temperature, write down current air-conditioning inflow temperature value, and described rate temperature change computing module calculates temperature drop rate or temperature rise rate value; Described judge module instructs each described compressor start or out of service according to current air-conditioning inflow temperature value and temperature drop rate or temperature rise rate value.
3. the intelligence control method of modularization handpiece Water Chilling Units as claimed in claim 1 or 2, it is characterized in that: the be in operation numbering of formation that compressor is closed by the start and stop order and the formation of opening of described control device, the start and stop method of " opening earlier earlier and stopping, stop earlier to open earlier " by compressor is controlled that each described compressor is started by sequence or is out of service.
4. the intelligence control method of modularization handpiece Water Chilling Units as claimed in claim 3 is characterized in that: the intelligence control method of described modularization handpiece Water Chilling Units comprises the steps:
Step 1: control device is arranged out the formation of compression office, and the formation of opening is not for having;
Step 2: control device judges whether to start compressor, in this way, enters step 3, as not, enters step 5;
Step 3: first compressor in the formation of the pass of modularization handpiece Water Chilling Units is opened, and enters step 4;
Step 4: the last tagmeme of the formation that first compressor in the formation that will close moves on to out from the formation of closing;
Step 5: control device judges whether to want close compressor, in this way, enters step 6, as not, enters step 2;
Step 6: first compressor in the formation of pass make and break enters step 7;
Step 7: the last tagmeme that first compressor in the formation of opening is moved on to the formation of pass.
5. the intelligence control method of modularization handpiece Water Chilling Units as claimed in claim 4 is characterized in that: the queue order flow process of formation of opening in the intelligence control method of described modularization handpiece Water Chilling Units and pass is:
At first control device is numbered the numbering of formation of closing and the formation of opening to compressor, whole system has 32 looms, the formation 0.1.2.3.4 that closes ... .31, the formation of opening: do not have, the perhaps formation 10.11.12.13 of Guaning ... 31, the formation 0.1.2.3 that opens ... .9. this information is stored in the memory of control device CPU:
Implementation procedure is as follows:
Every compressor has a definite numbering by the hardware of mainboard, and corresponding relation is as follows:
Module 1 compressor 1, module 1 compressor 2, module 2 compressors 1, module 2 compressors 2 ... module 16 compressors 1, module 16 compressors 2 correspond to 0,1,2,3 respectively ... 30,31;
Just having begun to compress machine-operated formation is 32 compressors, is 0,1,2 in order ... 31; And the formation that compressor leaves is 0 compressor;
The first step need be driven compressor, allows first compressor (be No. 0 compressor this moment) that compresses in the machine-operated formation open, and in the formation that after the unlatching this compressor is moved on to out from the formation of closing, two formations are as follows:
The formation of closing is 1,2 in order ... 31; And the formation of opening has a compressor, is numbered 0;
Second step, need open 6 compressors again, then the compressor of opening in order is 1,2,3,4,5,6, two formations are as follows:
The formation of closing is 7,8,9 in order ... 31; And the formation of opening is 0,1,2,3,4,5,6;
The 3rd step, need to close compressor, then close first compressor (i.e. No. 0 compressor) in the formation of make and break, after closing, formation is as follows:
The formation of closing is 7,8,9 in order ... 31,0; And the formation of opening is 1,2,3,4,5,6;
The 4th step, need close 4 compressors again, then close 1,2,3,4 in order, after closing, formation is as follows:
The formation of closing is 7,8,9 in order ... 31,0,1,2,3,4; And the formation of opening is 5,6;
The 5th step, need drive compressor, open 7, after the unlatching, formation is as follows:
The formation of closing is 8,9 in order ... 31,0,1,2,3,4; And the formation of opening is 5,6,7;
The 6th step needed to close compressor, closed 5, and after closing, formation is as follows:
The formation of closing is 8,9 in order ... 31,0,1,2,3,4,5; And the formation of opening is 6,7;
The 7th step, need open 26 compressors, be respectively 8,9 ... 31,0,1, after the unlatching, formation is as follows:
The formation of closing is 2,3,4,5 in order; And the formation of opening is 6,7,8,9 ... 31,0,1;
The 8th step needed to close 28 compressors, was respectively 6,7,8,9 ... 31,0,1, after closing, formation is as follows:
The formation of closing is 2,3,4,5,6,7,8,9 in order ... 31,0,1; And the formation of opening does not have compressor.
6. the intelligence control method of modularization handpiece Water Chilling Units as claimed in claim 3, it is characterized in that: comprise that also water temperature temperature drop or raising speed rate control method are: by the temperature sensor collecting temperature, every interval special time Δ t writes down temperature value, and do corresponding calculated: wherein T1 is a last record value, T2 is the record value of current time, and then temperature drop rate this moment is that (T1-T2)/Δ t or temperature rise rate are (T2-T1)/Δ t; Interval of delta t is after the time, and then the record temperature value, writes down temperature again, and calculates rate of change once more; Described control device write down current air-conditioning inflow temperature value, and described rate temperature change computing module calculates temperature drop rate or temperature rise rate value according to the temperature of temperature sensor collecting temperature; Described judge module instructs each described compressor start or out of service according to current air-conditioning inflow temperature value and temperature drop rate or temperature rise rate value.
7. the intelligence control method of modularization handpiece Water Chilling Units as claimed in claim 6, it is characterized in that: water temperature temperature drop or raising speed rate control determination methods are: be higher than at inflow temperature under the situation of setting value, greater than the criterion value, then the control device instruction need not be opened other compressors that still are in closed condition again as temperature drop rate.
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| CN2009100423359A CN102003748A (en) | 2009-09-01 | 2009-09-01 | Modular water chilling unit and intelligent control method thereof |
| PCT/CN2010/076495 WO2011026421A1 (en) | 2009-09-01 | 2010-08-31 | Modular chilling water unit and intelligent control method thereof |
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| CN2009100423359A CN102003748A (en) | 2009-09-01 | 2009-09-01 | Modular water chilling unit and intelligent control method thereof |
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| CN101315560A (en) * | 2008-07-10 | 2008-12-03 | 四川长虹电器股份有限公司 | Control method for improving service life of water chilling unit system |
| CN100578398C (en) * | 2008-10-09 | 2010-01-06 | 南京五洲制冷集团有限公司 | Energy control method for modularization helical lobe compressor unit |
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