CN107576028A - A kind of flow control system and method for handpiece Water Chilling Units cooling water pump - Google Patents
A kind of flow control system and method for handpiece Water Chilling Units cooling water pump Download PDFInfo
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- CN107576028A CN107576028A CN201710851940.5A CN201710851940A CN107576028A CN 107576028 A CN107576028 A CN 107576028A CN 201710851940 A CN201710851940 A CN 201710851940A CN 107576028 A CN107576028 A CN 107576028A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000000498 cooling water Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The present invention relates to a kind of flow control system and method for handpiece Water Chilling Units cooling water pump, the system includes handpiece Water Chilling Units condenser side, cooling tower and cooling water pump, inlet channel is provided between the output end and cooling tower of handpiece Water Chilling Units condenser side, cooling water pipeline is provided between the input of cooling tower and handpiece Water Chilling Units condenser side, cooling water pump is arranged on cooling water pipeline, system also includes flow collection module and VFC module, flow collection module is arranged on inlet channel, and VFC module is connected with flow collection module and cooling water pump respectively；Methods described includes：The flow of flow collection module monitors inlet channel is simultaneously sent to VFC module, VFC module judges whether flow exceedes the maximum cooling water requirements of handpiece Water Chilling Units, if then sending control signal to cooling water pump, flow is adjusted, continues to monitor if otherwise returning.Compared with prior art, the present invention has the advantages that intelligentized control method, good cooling results and saves the energy.
Description
Technical field
The present invention relates to handpiece Water Chilling Units control field, more particularly, to a kind of flow control for handpiece Water Chilling Units cooling water pump
System and method processed.
Background technology
The cooling water pump of the water cooled chiller of conventional central air-conditioning station simply simply devises one in the design
Platform meets the water circulating pump of live handpiece Water Chilling Units flow and lift demand.It is according to related national standard in itself during many designing institute's designs
Carry out, so system normal operation has no problem, but from the perspective of energy-conservation, be still in use at the scene
It is of problems, because the cooling water pump design selection of traditional handpiece Water Chilling Units is all to be to have setting for certain surplus and pipeline
It is to have deviation certainly to count resistance and the mounted actual pipe resistance in scene, according to pump characteristic, due to pipeline
Actual resistance causes the actual flow value of water pump and design load to be always devious, and use field experience for many years finds big portion
Point situation is that the flow (off-rating) that cooling water is excessive be present occurs.Like this not only increase cooling water pump
Power consumption, and the cooling tower of the water chiller of live standard configuration is increasingly deteriorated certainly with aging, cooling capacity, and it is excessive
Flow (flow velocity) can have the opposite effect to the cooling capacity of cooling tower, and cooling tower can have little time to cool down, and cause coolant water temperature higher, this
Sample causes unit COP of water chilling unit host decline itself, the drawbacks of certain be present.
The content of the invention
The purpose of the present invention is to provide a kind of flow control system for handpiece Water Chilling Units cooling water pump regarding to the issue above
And method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of flow control system for handpiece Water Chilling Units cooling water pump, the system include handpiece Water Chilling Units condenser side,
Cooling tower and cooling water pump, inlet channel is provided between the output end and cooling tower of the handpiece Water Chilling Units condenser side, it is described cold
But cooling water pipeline is provided between the input of tower and handpiece Water Chilling Units condenser side, the cooling water pump is arranged at cooling water pipeline
On, the system also includes flow collection module and VFC module, and the flow collection module is arranged on inlet channel,
The VFC module is connected with flow collection module and cooling water pump respectively.
The flow collection module includes detachable flowmeter and signal transacting sending assembly, and the detachable flowmeter exists
It is installed on inlet channel during work, and is connected with the signal transacting sending assembly being fixed on inlet channel, at the signal
Haircut sending component is connected with VFC module.
The signal transacting sending assembly includes the analog-digital converter being integrated on the first pcb board and wireless signal is sent
Device, the analog-digital converter are connected with detachable flowmeter, the radio signal senders respectively with analog-digital converter and frequency conversion
Control module connects.
The detachable flowmeter includes electrode, magnet exciting coil, barred body and crossover display terminal, the quantity of the magnet exciting coil
No less than 3, be uniformly distributed on barred body, the electrode be arranged on barred body and be evenly distributed in adjacent magnet exciting coil it
Between, the crossover display terminal is located at barred body top and is connected with electrode, and the barred body is inserted into inside inlet channel at work,
The electrode is also connected with signal transacting sending assembly, and flanged ball valve is additionally provided with the barred body.
The detachable flowmeter is installed on inlet channel at work, with the output end of handpiece Water Chilling Units condenser side it
Between distance be more than 10 times of inlet channel caliber value, the distance of first elbow of the pipeline between cooling tower is more than water inlet
5 times of pipe diameter value.
The VFC module includes the signal transacting receiving unit and frequency-conversion control cabinet being connected with each other, at the signal
Reason receiving unit is arranged on cooling water pipeline, and the frequency-conversion control cabinet is arranged at cooling water pipeline side, the signal transacting
Receiving unit is connected with flow collection module.
The signal reception processing component includes wireless signal receiver and the digital-to-analogue conversion being integrated on the second pcb board
Device, the wireless signal receiver are connected with flow collection module and digital analog converter respectively, the digital analog converter and frequency conversion
Switch board connects.
A kind of flow controlling party for handpiece Water Chilling Units cooling water pump realized based on flow control system as described above
Method, methods described comprise the following steps：
S1) the flow information that the flow of flow collection module monitors inlet channel and transmission monitor；
S2) VFC module receives the flow information that flow acquisition module is sent；
S3) VFC module judges whether flow exceedes the maximum cooling water of handpiece Water Chilling Units according to the flow information of reception
Requirements, if then entering step s4), if otherwise return to step s1)；
S4) VFC module sends control signal to cooling water pump, and control cooling water pump adjusts flow to handpiece Water Chilling Units
Maximum cooling water requirements, and return to step s1).
The determination method of the maximum cooling water requirements of the handpiece Water Chilling Units includes being recommended according to the specification of handpiece Water Chilling Units
Value determines or calculated by flow value to determine.
It is described to determine that the maximum cooling water requirements of handpiece Water Chilling Units are specially by flow value calculating：
Wherein, M is the maximum cooling water requirements of handpiece Water Chilling Units, and Q is the condensation heat of handpiece Water Chilling Units, and c is the specific heat capacity of water,
Δ t is the temperature gap of cooling water Inlet and outlet water.
Compared with prior art, the invention has the advantages that：
(1) by setting flow collection module to survey the flow of cooling water, then by VFC module come setpoint frequency
So as to control maximum stream flow requirement of the cooling water pump to handpiece Water Chilling Units, so as to avoid excessive traffic requirement and water pump electricity consumption,
The power consumption of cooling water pump is eventually reduced, has reached the purpose of electricity saving and energy saving, so that the design discharge of cooling water can protect
The proper heat reduction of cooling tower is demonstrate,proved, reduces the water temperature of cooling water, the unit COP values of water cooled chiller uprise, so as to improve
The status of energy consumption of handpiece Water Chilling Units.
(2) flow collection module includes detachable flowmeter and signal transacting sending assembly, can from detachable flowmeter
With cause in a station more units need not every unit be all equipped with fixed flowmeter, so as to only be equipped with a flowmeter,
Carry out dismounting wheel current test to use, reduce initial cost, save cost.
(3) detachable flowmeter produces uniform magnetic field using magnet exciting coil in fluid, then produces and flows on electrode
The corresponding induced electromotive force of body speed, so as to derive the principle of flow in pipeline according to electromotive force to design, structure
Simply, cost is low and is easily achieved, and the flanged ball valve set on barred body is further easy to the dismounting of flowmeter, is easy to worker's
Operation, it is easy to accomplish.
(4) detachable flowmeter is installed on inlet channel at work, with the output end of handpiece Water Chilling Units condenser side it
Between distance be more than 10 times of inlet channel caliber value, the distance of first elbow of the pipeline between cooling tower is more than water inlet
5 times of pipe diameter value, such distance set the data that flowmeter is monitored to have larger accuracy, will not be due to
Closely the flow value of monitoring is had an impact excessively apart from handpiece Water Chilling Units or cooling tower, improves the accuracy of rear afterflow rate control.
(5) flow collection module and VFC module carry out information transfer by wireless signal, have broken away from distance
Limitation so that the position of flow collection module and VFC module sets the distance between need not considering further that, so that
Whole system arrangement it is more flexible, practical performance is stronger.
(6) flow control methods proposed by the present invention, access can both be passed through in the determination to maximum cooling water requirements
The mode of specification is determined, can also be determined by calculating, and reality is more conformed to by consulting acquisition requirements when being described book
Border situation, and by being calculated requirements during without specification, and according to situation in the pipeline of reality come the calculating that carries out, two
Kind method can obtain accurate requirements, improve the precision of flow control.
Brief description of the drawings
Fig. 1 is the structural representation of the flow control system for handpiece Water Chilling Units cooling water pump；
Fig. 2 is the flow chart of the flow control methods for handpiece Water Chilling Units cooling water pump；
Wherein, 1 is handpiece Water Chilling Units, and 2 be condenser side, and 3 be vaporizer side, and 4 be cooling water pump, and 5 be VFC module,
6 be flow collection module, and 7 be inlet channel, and 8 be cooling tower, and 9 be cooling water pipeline.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
As shown in figure 1, a kind of flow control system for handpiece Water Chilling Units cooling water pump is present embodiments provided, wherein 1
For handpiece Water Chilling Units, in centrally located air-conditioning station, low-temperature receiver is provided for tail end air conditioner equipment, its heat transmission equipment mainly there are 2 condensers
Side and 3 vaporizer sides are formed.4 be cooling water pump, i.e. the water circulating pump of water cooled chiller cooling water, and 5 be VFC module,
For controlling water pump operation frequency, so as to adjust flow, 6 be flow collection module, in order to gather flow information, and it is carried out
Send, 7 be inlet channel, i.e., inputs water to be cooled in condenser side to cooling tower, and 8 be cooling tower, as condenser
Low-temperature receiver, for cooling down the water that condenser heat production comes out, 9 be cooling water pipeline, as connection cooling tower, cooling water pump and condensation
The pipeline loop of device.
Wherein, flow collection module includes detachable flowmeter and signal transacting sending assembly, and detachable flowmeter is in work
As when be installed on inlet channel, and be connected with the signal transacting sending assembly being fixed on inlet channel, signal transacting is sent
Component is connected with VFC module.Signal transacting sending assembly includes the analog-digital converter and nothing being integrated on the first pcb board
Line sender unit, analog-digital converter are connected with detachable flowmeter, radio signal senders respectively with analog-digital converter and change
Frequency control module connects.Detachable flowmeter includes electrode, magnet exciting coil, barred body and crossover display terminal, the quantity of magnet exciting coil
No less than 3, it is uniformly distributed on barred body, electrode is arranged on barred body and is evenly distributed between adjacent magnet exciting coil,
Crossover display terminal is located at barred body top and is connected with electrode, and barred body is inserted into inside inlet channel at work, electrode also with letter
Number processing sending assembly connection, is additionally provided with flanged ball valve on barred body.Detachable flowmeter is installed on inlet channel at work,
The distance between output end of handpiece Water Chilling Units condenser side is more than 10 times of inlet channel caliber value, the pipe between cooling tower
The distance of first elbow in road is more than 5 times of inlet channel caliber value.VFC module is included at the signal of interconnection
Reason receiving unit and frequency-conversion control cabinet, signal transacting receiving unit are arranged on cooling water pipeline, and frequency-conversion control cabinet is arranged at cold
But waterpipe side, signal transacting receiving unit are connected with flow collection module.Signal reception processing component includes being integrated in the
Wireless signal receiver and digital analog converter on two pcb boards, wireless signal receiver respectively with flow collection module and digital-to-analogue
Converter is connected, and digital analog converter is connected with frequency-conversion control cabinet.
As shown in Fig. 2 according to above-mentioned flow control system, the flow controlling party for handpiece Water Chilling Units cooling water pump of realization
Method, comprise the following steps：
S1) the flow information that the flow of flow collection module monitors inlet channel and transmission monitor；
S2) VFC module receives the flow information that flow acquisition module is sent；
S3) VFC module judges whether flow exceedes the maximum cooling water of handpiece Water Chilling Units according to the flow information of reception
Requirements, if then entering step s4), if otherwise return to step s1)；
S4) VFC module sends control signal to cooling water pump, and control cooling water pump adjusts flow to handpiece Water Chilling Units
Maximum cooling water requirements, and return to step s1).
Wherein, the determination method of the maximum cooling water requirements of handpiece Water Chilling Units includes being recommended according to the specification of handpiece Water Chilling Units
Value determines or calculated by flow value to determine；Calculated by flow value and determine that the maximum cooling water requirements of handpiece Water Chilling Units are specific
For：
Wherein, M is the maximum cooling water requirements of handpiece Water Chilling Units, and Q is the condensation heat of handpiece Water Chilling Units, and c is the specific heat capacity of water,
Δ t is the temperature gap of cooling water Inlet and outlet water.
Frequency-conversion control cabinet in VFC module is except that can control the flow of cooling water pump to be no more than handpiece Water Chilling Units
Beyond maximum cooling water requirements, the flow of cooling water pump can also be controlled to be not less than lower limit, ensure that the minimum of condenser
Traffic requirement, when being run equivalent to water chilling unit host more than one of safeguard protection, ensure that the peace of water cooled chiller main frame
Row for the national games.
Claims (10)
1. a kind of flow control system for handpiece Water Chilling Units cooling water pump, the system includes handpiece Water Chilling Units condenser side, cold
But tower and cooling water pump, inlet channel, the cooling are provided between the output end and cooling tower of the handpiece Water Chilling Units condenser side
Cooling water pipeline is provided between the input of tower and handpiece Water Chilling Units condenser side, the cooling water pump is arranged at cooling water pipeline
On, it is characterised in that the system also includes flow collection module and VFC module, and the flow collection module is arranged at
On inlet channel, the VFC module is connected with flow collection module and cooling water pump respectively.
2. the flow control system according to claim 1 for handpiece Water Chilling Units cooling water pump, it is characterised in that the stream
Amount acquisition module includes detachable flowmeter and signal transacting sending assembly, the detachably flowmeter be installed at work into
On waterpipe, and it is connected with the signal transacting sending assembly being fixed on inlet channel, the signal transacting sending assembly is with becoming
Frequency control module connects.
3. the flow control system according to claim 2 for handpiece Water Chilling Units cooling water pump, it is characterised in that the letter
Number processing sending assembly includes being integrated in analog-digital converter and radio signal senders on the first pcb board, the analog-to-digital conversion
Device is connected with detachable flowmeter, and the radio signal senders are connected with analog-digital converter and VFC module respectively.
4. the flow control system according to claim 2 for handpiece Water Chilling Units cooling water pump, it is characterised in that it is described can
Dismounting flowmeter includes electrode, magnet exciting coil, barred body and crossover display terminal, and the quantity of the magnet exciting coil is no less than 3, uniformly
It is distributed on barred body, the electrode is arranged on barred body and is evenly distributed between adjacent magnet exciting coil, and the conversion is aobvious
Show that device is located at barred body top and is connected with electrode, the barred body is inserted into inside inlet channel at work, the electrode also with
Signal transacting sending assembly is connected, and flanged ball valve is additionally provided with the barred body.
5. the flow control system according to claim 2 for handpiece Water Chilling Units cooling water pump, it is characterised in that it is described can
Dismounting flowmeter be installed at work on inlet channel, the distance between output end of handpiece Water Chilling Units condenser side be more than into
10 times of waterpipe caliber value, the distance of first elbow of the pipeline between cooling tower are more than the 5 of inlet channel caliber value
Times.
6. the flow control system according to claim 1 for handpiece Water Chilling Units cooling water pump, it is characterised in that the change
Frequency control module includes the signal transacting receiving unit and frequency-conversion control cabinet being connected with each other, and the signal transacting receiving unit is set
In on cooling water pipeline, the frequency-conversion control cabinet is arranged at cooling water pipeline side, the signal transacting receiving unit and flow
Acquisition module connects.
7. the flow control system according to claim 6 for handpiece Water Chilling Units cooling water pump, it is characterised in that the letter
Number reception processing component includes the wireless signal receiver and digital analog converter being integrated on the second pcb board, the wireless signal
Receiver is connected with flow collection module and digital analog converter respectively, and the digital analog converter is connected with frequency-conversion control cabinet.
A kind of 8. flow control for handpiece Water Chilling Units cooling water pump realized based on flow control system as claimed in claim 1
Method processed, it is characterised in that methods described comprises the following steps：
S1) the flow information that the flow of flow collection module monitors inlet channel and transmission monitor；
S2) VFC module receives the flow information that flow acquisition module is sent；
S3) VFC module judges whether flow exceedes the maximum cooling water demand of handpiece Water Chilling Units according to the flow information of reception
Value, if then entering step s4), if otherwise return to step s1)；
S4) VFC module to cooling water pump send control signal, control cooling water pump adjust flow to handpiece Water Chilling Units most
Big cooling water requirements, and return to step s1).
9. the flow control methods according to claim 8 for handpiece Water Chilling Units cooling water pump, it is characterised in that described cold
The determination method of the maximum cooling water requirements of water dispenser group includes stream is determined or passed through according to the specification recommendation of handpiece Water Chilling Units
Magnitude calculation determines.
10. the flow control methods according to claim 9 for handpiece Water Chilling Units cooling water pump, it is characterised in that described
Determine that the maximum cooling water requirements of handpiece Water Chilling Units are specially by flow value calculating：
<mrow>
<mi>M</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mn>3.6</mn>
<mi>Q</mi>
</mrow>
<mrow>
<mi>c</mi>
<mo>&times;</mo>
<mi>&Delta;</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
Wherein, M be handpiece Water Chilling Units maximum cooling water requirements, Q be handpiece Water Chilling Units condensation heat, c be water specific heat capacity, Δ t
For the temperature gap of cooling water Inlet and outlet water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851940.5A CN107576028A (en) | 2017-09-19 | 2017-09-19 | A kind of flow control system and method for handpiece Water Chilling Units cooling water pump |
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| CN201710851940.5A CN107576028A (en) | 2017-09-19 | 2017-09-19 | A kind of flow control system and method for handpiece Water Chilling Units cooling water pump |
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| CN107576028A true CN107576028A (en) | 2018-01-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195927A (en) * | 2019-06-04 | 2019-09-03 | 上海润风智能科技有限公司 | A kind of the chilled water system control method and device of distributed centralization air-conditioning |
| CN112393481A (en) * | 2020-11-19 | 2021-02-23 | 上海尚聿制冷设备有限公司 | Multi-working-condition water chilling unit control method |
| CN113375239A (en) * | 2021-06-21 | 2021-09-10 | 北京纪新泰富机电技术股份有限公司 | Integrated refrigeration station of air conditioner and central air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073231A (en) * | 1983-09-30 | 1985-04-25 | Mitsubishi Electric Corp | Transfer control device for refrigerating and air- conditioning device |
| CN2909078Y (en) * | 2005-12-31 | 2007-06-06 | 东莞市广大制冷有限公司 | Central air conditioning system capable of regulating flow of cooling water and refrigeration water |
| CN201129823Y (en) * | 2007-11-21 | 2008-10-08 | 厦门立思科技有限公司 | Central air conditioner energy-saving control device based on artificial neural net technique |
| JP2011002154A (en) * | 2009-06-18 | 2011-01-06 | Yokogawa Electric Corp | Cooling water temperature control device |
| CN204943789U (en) * | 2015-08-20 | 2016-01-06 | 湖南集森节能环保科技有限公司 | cooling water energy-saving control system |
| CN106440549A (en) * | 2016-05-30 | 2017-02-22 | 靳凯 | Control system for increasing comprehensive energy efficiency ratio of central air conditioning system |
| CN207262646U (en) * | 2017-09-19 | 2018-04-20 | 上海大众祥源动力供应有限公司 | A kind of flow control system for handpiece Water Chilling Units cooling water pump |
-
2017
- 2017-09-19 CN CN201710851940.5A patent/CN107576028A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073231A (en) * | 1983-09-30 | 1985-04-25 | Mitsubishi Electric Corp | Transfer control device for refrigerating and air- conditioning device |
| CN2909078Y (en) * | 2005-12-31 | 2007-06-06 | 东莞市广大制冷有限公司 | Central air conditioning system capable of regulating flow of cooling water and refrigeration water |
| CN201129823Y (en) * | 2007-11-21 | 2008-10-08 | 厦门立思科技有限公司 | Central air conditioner energy-saving control device based on artificial neural net technique |
| JP2011002154A (en) * | 2009-06-18 | 2011-01-06 | Yokogawa Electric Corp | Cooling water temperature control device |
| CN204943789U (en) * | 2015-08-20 | 2016-01-06 | 湖南集森节能环保科技有限公司 | cooling water energy-saving control system |
| CN106440549A (en) * | 2016-05-30 | 2017-02-22 | 靳凯 | Control system for increasing comprehensive energy efficiency ratio of central air conditioning system |
| CN207262646U (en) * | 2017-09-19 | 2018-04-20 | 上海大众祥源动力供应有限公司 | A kind of flow control system for handpiece Water Chilling Units cooling water pump |
Non-Patent Citations (1)
| Title |
|---|
| 中国石油天然气总公司, 中国建筑工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195927A (en) * | 2019-06-04 | 2019-09-03 | 上海润风智能科技有限公司 | A kind of the chilled water system control method and device of distributed centralization air-conditioning |
| CN110195927B (en) * | 2019-06-04 | 2021-07-20 | 上海润风智能科技有限公司 | Method and device for controlling cold water system of distributed central air conditioner |
| CN112393481A (en) * | 2020-11-19 | 2021-02-23 | 上海尚聿制冷设备有限公司 | Multi-working-condition water chilling unit control method |
| CN113375239A (en) * | 2021-06-21 | 2021-09-10 | 北京纪新泰富机电技术股份有限公司 | Integrated refrigeration station of air conditioner and central air conditioner |
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Application publication date: 20180112 |