CN107575971A - A kind of vaporation-type handpiece Water Chilling Units and control method - Google Patents
A kind of vaporation-type handpiece Water Chilling Units and control method Download PDFInfo
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Abstract
The present invention, which provides a kind of vaporation-type handpiece Water Chilling Units and control method, the vaporation-type handpiece Water Chilling Units, to be included：Compressor (1) and evaporative condenser (2)；Wind-cooling type precool heat exchanger device (8), it is arranged between the compressor (1) and the evaporative condenser (2)；Water-cooling type precool heat exchanger device (9), it is arranged between the compressor (1) and the evaporative condenser (2) and is connected in parallel with the Wind-cooling type precool heat exchanger device (8).By way of the present invention can be relative to air-cooled single precooling of prior art, add the mode of water precooling, because the mode of water precooling is smaller relative to the power consumption of wind precooling, therefore while scale inhibition is carried out to unit, also reduce the power consumption of unit, the efficiency of unit is improved；Simultaneously because wind precooling works to carry out cooling effect to refrigerant with water precooling simultaneously, the cooling exothermal efficiency of refrigerant is also effectively improved, improves the exchange capability of heat of unit.
Description
Technical field
The invention belongs to refrigeration technology field, and in particular to a kind of vaporation-type handpiece Water Chilling Units and control method.
Background technology
With the fast development of China's track transportation industry, supporting air-conditioning equipment gradually expands scale production with subway station
Industry, vaporation-type handpiece Water Chilling Units are exactly to meet its high energy efficiency, round-the-clock, variable working condition, without the few market demand of cooling tower, occupation of land.
But vaporation-type handpiece Water Chilling Units are faced with a variety of industry issues, hinder its development and promote.Including heat exchanger surface
Fouling is serious, and wet-bulb depression is big round the clock, unit region poor universality etc.；Cause fluctuation of service, reliability is poor, heat-energy transducer
Power declines, and maintenance expense is high, and projected life is short etc..
Many engineers and technicians increase surface cooler or finned heat exchanger before condenser, but this method is faced with energy
Effect is poor, is had a great influence by ambient wet bulb temperature (relative humidity), humiture change round the clock, it is impossible to effectively slow down heat exchanger surface knot
Dirt, and fluctuation of service, cause comfortableness poor, the phenomenon of poor user experience.
Due to vaporation-type handpiece Water Chilling Units of the prior art exist scale inhibition (slowing down fouling) means efficiency is low, exchange capability of heat
It is low, applicability is poor, fluctuation of service, cause comfortableness poor, the technical problem such as poor user experience, therefore the present invention research set
Count out a kind of vaporation-type handpiece Water Chilling Units and control method.
The content of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming vaporation-type handpiece Water Chilling Units of the prior art to exist slows down
The defects of efficiency is low during fouling, so as to provide a kind of vaporation-type handpiece Water Chilling Units and control method.
The present invention provides a kind of vaporation-type handpiece Water Chilling Units, and it includes：
Compressor and evaporative condenser；
Wind-cooling type precool heat exchanger device, is arranged between the compressor and the evaporative condenser；
Water-cooling type precool heat exchanger device, be arranged between the compressor and the evaporative condenser and with it is described air-cooled
Type precool heat exchanger device is connected in parallel.
Preferably, the water-cooling type precool heat exchanger device includes cooling water circulation water tank and the sleeve pipe being arranged in the water tank
Heat exchanger, refrigerant flow in described sleeve pipe heat exchanger.
Preferably, the outlet pipe of the cooling water circulation water tank is connected with the oral siphon of the evaporative condenser.
Preferably, it is additionally provided with water pump between the cooling water circulation water tank and the evaporative condenser.
Preferably, the evaporative condenser include vaporation-type refrigerant heat exchanger tube, spray system, wherein the oral siphon with
The spray system is connected.
Preferably, the evaporative condenser also includes being arranged on the wind with the vaporation-type refrigerant heat exchanger tube correspondence position
Machine.
Preferably, it is additionally provided with control valve in the parallel branch where the Wind-cooling type precool heat exchanger device.
Preferably, it is additionally provided with pressure sensor on the gas exhaust piping of the compressor.
Preferably, the Wind-cooling type precool heat exchanger device is finned heat exchanger.
The present invention also provides a kind of control method of vaporation-type handpiece Water Chilling Units, and it uses foregoing vaporation-type handpiece Water Chilling Units,
According to outdoor temperature and the different operating modes of humidity, the switching control that precooling is carried out to evaporative condenser is adjusted.
Preferably, when including pressure sensor and during control valve：
As pressure P≤P1 of pressure sensor detection, judge that then closing control valve, makes now as high temperature low humidity operating mode
Obtain refrigerant and the evaporative condenser is only flowed to by the water-cooling type precool heat exchanger device；
As the pressure P of pressure sensor detection>During P1, judge now then to open control valve as hot and humid operating mode so that
Refrigerant flows to the evaporative condenser by the water-cooling type precool heat exchanger device and Wind-cooling type precool heat exchanger device respectively；
Wherein described P1 is refrigerant working conditions change preset pressure value.
A kind of vaporation-type handpiece Water Chilling Units and control method provided by the invention have the advantages that：
1. the vaporation-type handpiece Water Chilling Units and control method of the present invention, by the compressor and the evaporative condenser
Between and the water-cooling type precool heat exchanger device that sets of the mode in parallel with the Wind-cooling type precool heat exchanger device, can be relative to existing
The mode of air-cooled single precooling of technology, add the mode of water precooling, due to water precooling mode relative to wind precooling power consumption
It is smaller, thus while carrying out slowing down fouling to unit, be also effectively improved the efficiency of unit；Simultaneously because wind precooling with
Water precooling works to carry out cooling effect to refrigerant simultaneously, is also effectively improved the cooling exothermal efficiency of refrigerant, improves unit
Exchange capability of heat；
2. the vaporation-type handpiece Water Chilling Units and control method of the present invention, in the case of high temperature low humidity, by the water at low temperature in water tank
Precooling is carried out to condenser refrigerant, refrigerant temperature in condenser is reduced, reduces because under high temperature low moisture environments, general Wind-cooling type is pre-
Power is higher caused by device for cooling, the poor situation of overall performance.Refrigerant temperature reduced in condenser simultaneously after means to steam
The evaporated quantity of water of hairdo condenser surface is reduced, and scaling rate reduces；
3. the vaporation-type handpiece Water Chilling Units and control method of the present invention, in the case of hot and humid, in water precooling sleeve heat exchange
In the case of the precooling of device, the route condenser inlet cold wind of parallel connection increase by one carries out precooling to finned heat exchanger, works along both lines into one
Step reduces refrigerant temperature in condenser, reduces high load capacity condenser heat exchange deficiency caused by hot and humid environment, lifts complete machine
Refrigerating capacity.Refrigerant temperature reduced in condenser simultaneously after means that the evaporated quantity of water on evaporative condenser surface is reduced, fouling
Rate reduction；
4. the vaporation-type handpiece Water Chilling Units and control method of the present invention, solve under full working scope (hot and humid, high temperature low humidity), most
The refrigerant to evaporative condenser of limits carries out precooling, reduces condensation temperature, reduces due to its pipe surface water evaporation that exchanges heat
And caused incrustation scale.
Brief description of the drawings
Fig. 1 is the system flow structural representation of the vaporation-type handpiece Water Chilling Units of the present invention.
Reference is expressed as in figure：
1st, compressor；2nd, evaporative condenser；20th, oral siphon；21st, spray system；3rd, electric expansion valve；4th, package evaporates
Device；5th, water pump；6th, blower fan；7th, vaporation-type refrigerant heat exchanger tube；8th, Wind-cooling type precool heat exchanger device；9th, water-cooling type precool heat exchanger device；91、
Cooling water circulation water tank；91a, outlet pipe；92nd, double-tube heat exchanger；11st, pressure sensor；12nd, control valve.
Embodiment
As shown in figure 1, the present invention provides a kind of vaporation-type handpiece Water Chilling Units, it includes：
Compressor 1 and evaporative condenser 2；
Wind-cooling type precool heat exchanger device 8, it is arranged between the compressor 1 and the evaporative condenser 2；
Water-cooling type precool heat exchanger device 9, be arranged between the compressor 1 and the evaporative condenser 2 and with the wind
Cold mould precool heat exchanger device 8 is connected in parallel.
The present invention solves following technical problem：Vaporation-type cooling unit applicability under hot and humid environment is poor,
High temperature low humidity efficiency is poor, and heat exchanger surface fouling is than more serious, the problem of user's body-sensing difference of initiation.
By between the compressor and the evaporative condenser and in parallel with the Wind-cooling type precool heat exchanger device
The water-cooling type precool heat exchanger device that mode is set, water precooling can be added relative to the mode of air-cooled single precooling of prior art
Mode, because the mode of water precooling is smaller relative to the power consumption of wind precooling, thus while carrying out slowing down fouling to unit,
Also it is effectively improved the efficiency of unit；Simultaneously because wind precooling works to carry out cooling effect to refrigerant simultaneously with water precooling,
Increase heat exchange area, be further lowered into the refrigerant temperature of evaporative condenser, so as to reduce evaporative condenser heat exchange consumption
Work(, complete machine efficiency is improved, improve the exchange capability of heat of unit；
In the case of high temperature low humidity, precooling is carried out to condenser refrigerant by the water at low temperature in water tank, reduced cold in condenser
Matchmaker's temperature, reduce because under the high temperature low moisture environments such as drying regime, power caused by general Wind-cooling type pre-cooler is higher, complete machine
The situation of poor-performing, i.e., only cold using only the air-cooled evaporation as precooling, the relatively low situation of efficiency；Reduced simultaneously in condenser
Refrigerant temperature afterwards means that the evaporated quantity of water on evaporative condenser surface is reduced, and scaling rate reduces, and increase slows down fouling energy
Power；
In the case of hot and humid, in the case of the precooling of water precooling double-tube heat exchanger, the route condenser of parallel connection increase by one
Import cold wind carries out precooling to finned heat exchanger, and working along both lines further reduces refrigerant temperature in condenser, reduces hot and humid
High load capacity condenser heat exchange deficiency caused by environment, lift the refrigerating capacity of complete machine.Reduce due to rainy weather, wet environment
Under, i.e., the heat exchange decline of evaporative condenser, the situation of unit refrigeration duty deficiency caused by envionmental humidity too high (high humidity).
Refrigerant temperature reduced in condenser simultaneously after means that the evaporated quantity of water on evaporative condenser surface is reduced, scaling rate drop
Low, increase slows down fouling ability；
The vaporation-type handpiece Water Chilling Units of the present invention, are efficiently solved under full working scope (hot and humid, high temperature low humidity), maximum limit
The refrigerant to evaporative condenser of degree carries out precooling, reduces condensation temperature, reduces due to its heat exchange pipe surface water evaporation and produces
Raw incrustation scale.
Preferably, the water-cooling type precool heat exchanger device 9 includes cooling water circulation water tank 91 and is arranged in the water tank 91
Double-tube heat exchanger 92, refrigerant flows in described sleeve pipe heat exchanger 92.Pass through cooling water circulation water tank and double-tube heat exchanger phase
With reference to structure type, enable in double-tube heat exchanger of the refrigerant in water tank flow when by the water in water tank to cooling, from
And the temperature of refrigerant is reduced, the effect to refrigerant precooling and effect are realized, is lowered into the temperature of refrigerant in evaporative condenser,
So as to reduce the evaporation capacity of refrigerant within the condenser, the yield of incrustation scale is reduced, and compared to the form of wind precooling, this tool
The water precooling form of body can improve the efficiency of system, reduce energy consumption.
Preferably, the outlet pipe 91a of the cooling water circulation water tank 91 and the evaporative condenser 2 phase of oral siphon 20
Connection.The water after being heated in water tank by refrigerant can be directed into by such structure type in evaporative condenser, with
It is evaporated in condenser, so as to improve the temperature for entering evaporative condenser reclaimed water, is advantageous to the evaporation of water, improves and change
Thermal effect, and sufficient utilization has been carried out to water, has improved cycle efficieny.
Preferably, it is additionally provided with water pump 5 between the cooling water circulation water tank 91 and the evaporative condenser 2.Pass through
Water pump is set in above-mentioned position, enters in evaporative condenser the power that operation is provided after being heated to water from water tank,
Ensure water circulates process.
Preferably, the evaporative condenser 2 include vaporation-type refrigerant heat exchanger tube 7, spray system 21, wherein it is described enter water
Pipe 20 is connected with the spray system 21.Flowed by refrigerant heat exchanger tube refrigerant in refrigerant heat exchanger tube and with the water outside pipe
Exchanged heat, spray system can effectively by water by sprinkling by way of with refrigerant heat exchanger tube contact and and refrigerant
Exchanged heat, improve heat transfer effect, and spray system be connected with oral siphon, can be effectively by quilt in cooling water circulation water tank
Water after heating is introduced in spray system, improves the efficiency of heat exchange, improves recycling for water.
Preferably, the evaporative condenser 2 also includes being arranged on and the correspondence position of vaporation-type refrigerant heat exchanger tube 7
Blower fan 6.By the heat transfer effect that can effectively strengthen evaporative condenser in refrigerant heat exchanger tube correspondence position setting blower fan.It is excellent
Elect axial flow blower as.
Preferably, it is additionally provided with control valve 12 in the parallel branch where the Wind-cooling type precool heat exchanger device 8.(it is preferably
Magnetic valve) regulation can be controlled to the opening and closing of the Wind-cooling type precool heat exchanger device on the branch road by control valve, can basis
The needs selection of actual condition opens or closes the Wind-cooling type precool heat exchanger device, plays a part of intelligent control.
Preferably, it is additionally provided with pressure sensor 11 on the gas exhaust piping of the compressor 1.By being set in above-mentioned position
Putting pressure sensor can detect to the condensing pressure of condenser, when outdoor environment is hot and humid operating mode, cooling water
It is difficult to evaporate, causes refrigerant to be difficult to exchange heat, heat exchange efficiency reduces, so that the pressure detected is higher, conversely
Ground, when outdoor environment is high temperature low humidity operating mode, cooling water is easier to be evaporated, causes refrigerant to be easier to be exchanged heat, heat exchange effect
Rate improves, so that the pressure detected is relatively low, therefore just can obtain outdoor environment operating mode indirectly by detecting pressure
Operating mode value, realize that intelligent control provides condition for unit.
Preferably, the Wind-cooling type precool heat exchanger device 8 is finned heat exchanger.This is the Wind-cooling type precool heat exchanger of the present invention
The preferred constructive form of device.
System operation is summarized：
Refrigerant flow increases the cold handpiece Water Chilling Units of evaporation of a bypass flow path in parallel after improvement, and refrigerant flow is as follows：
Wind precooling refrigerant flow：2 → electric expansion valve of compressor 1 → Wind-cooling type precool heat exchanger 8 → evaporative condenser of device 3
→ shell-tube evaporator 4；
Water precooling refrigerant flow：2 → electric expansion valve of compressor 1 → water-cooling type precool heat exchanger 9 → evaporative condenser of device 3
→ shell-tube evaporator 4.
Change unit operation principle after machine：
Under high temperature low humidity operating mode, refrigerant flow is water precooling refrigerant flow；This environment is in running on the lower load, vaporation-type
Refrigerant cools by water-cooling type precool heat exchanger device 9 in condensation train condenser, is condensed using evaporative condenser 2, can be with
Meet the efficient operation of unit.
Under hot and humid operating mode, refrigerant flow is water precooling and wind precooling parallel flow paths；This environment is in high load capacity work
Condition, refrigerant circulating water temperature increase, cause effectively reduce forecooler temperature after water precool heat exchanger device carries out precooling.Cause
, according to the decision condition of condenser pressure value P values, the control valve 12 preset on the stream of Wind-cooling type precool heat exchanger device 8 is opened, cold for this
Matchmaker's stream is simultaneously via after Wind-cooling type precool heat exchanger device 8 and water-cooling type precool heat exchanger device 9, hence into evaporative condenser 2,
Reduction condensation temperature can be reached, reduce the incrustation scale on the surface of vaporation-type refrigerant heat exchanger tube 7；For another angle, equivalent to
Under hot and humid high load capacity operating mode, the condensing mode of unit is the combination of transpiration-cooled+water-cooled+air-cooled, water cooling
Type precool heat exchanger device 9 undertakes part heat exchange load, the heat exchange amount of evaporative condenser 2 respectively with Wind-cooling type precool heat exchanger device 8
Reduce, further improve heat exchange amount, improving energy efficiency.
The present invention also provides a kind of control method of vaporation-type handpiece Water Chilling Units, and it uses foregoing vaporation-type handpiece Water Chilling Units,
According to outdoor temperature and the different operating modes of humidity, the switching control that precooling is carried out to evaporative condenser 2 is adjusted.
The present invention solves following technical problem：Vaporation-type cooling unit applicability under hot and humid environment is poor,
High temperature low humidity efficiency is poor, and heat exchanger surface fouling is than more serious, the problem of user's body-sensing difference of initiation.
By between the compressor and the evaporative condenser and in parallel with the Wind-cooling type precool heat exchanger device
The water-cooling type precool heat exchanger device that mode is set, water precooling can be added relative to the mode of air-cooled single precooling of prior art
Mode, because the mode of water precooling is smaller relative to the power consumption of wind precooling, thus while carrying out slowing down fouling to unit,
Also it is effectively improved the efficiency of unit；Simultaneously because wind precooling works to carry out cooling effect to refrigerant simultaneously with water precooling,
The cooling exothermal efficiency of refrigerant is also effectively improved, improves the exchange capability of heat of unit；
In the case of high temperature low humidity, precooling is carried out to condenser refrigerant by the water at low temperature in water tank, reduced cold in condenser
Matchmaker's temperature, reduce because under the high temperature low moisture environments such as drying regime, power caused by general Wind-cooling type pre-cooler is higher, complete machine
The situation of poor-performing, i.e., only cold using only the air-cooled evaporation as precooling, the relatively low situation of efficiency；Reduced simultaneously in condenser
Refrigerant temperature afterwards means that the evaporated quantity of water on evaporative condenser surface is reduced, and scaling rate reduces, and increase slows down fouling energy
Power；
In the case of hot and humid, in the case of the precooling of water precooling double-tube heat exchanger, the route condenser of parallel connection increase by one
Import cold wind carries out precooling to finned heat exchanger, and working along both lines further reduces refrigerant temperature in condenser, reduces hot and humid
High load capacity condenser heat exchange deficiency caused by environment, lift the refrigerating capacity of complete machine.Reduce due to rainy weather, wet environment
Under, i.e., the heat exchange decline of evaporative condenser, the situation of unit refrigeration duty deficiency caused by envionmental humidity too high (high humidity).
Refrigerant temperature reduced in condenser simultaneously after means that the evaporated quantity of water on evaporative condenser surface is reduced, scaling rate drop
Low, increase slows down fouling ability；
The vaporation-type water chilling unit control method of the present invention, efficiently solves full working scope (hot and humid, high temperature low humidity)
Under, precooling is carried out to the refrigerant of evaporative condenser to greatest extent, reduces condensation temperature, is reduced due to its pipe surface water that exchanges heat
Evaporate and caused incrustation scale.
Preferably, when including pressure sensor 11 and during control valve 12：
As pressure P≤P1 that pressure sensor 11 detects, judge now as high temperature low humidity operating mode, then closing control valve
12 so that refrigerant only flows to the evaporative condenser 2 by the water-cooling type precool heat exchanger device；
As the pressure P that pressure sensor 11 detects>During P1, judge now then to open control valve 12 as hot and humid operating mode,
So that refrigerant flows to the evaporative condenser by the water-cooling type precool heat exchanger device 9 and Wind-cooling type precool heat exchanger device 8 respectively
2；
Wherein described P1 is refrigerant working conditions change preset pressure value.
This is the condensing pressure value that detects of basis of the present invention and judges outdoor operating mode and further control to adjust refrigerant
It is individually by precooling in water-cooling type precool heat exchanger device or by precooling in Wind-cooling type precool heat exchanger device or simultaneously by two
Precool heat exchanger is carried out in individual precool heat exchanger device, to reach raising system energy efficiency, heat exchange efficiency is improved and improves and slow down fouling ability
Effect.
The P values collected according to condenser pressure sensor 11, adjust and controlled in the place branch road of Wind-cooling type precool heat exchanger device 8
The keying of valve 12 processed, adjusts the trend of refrigerant flow, the operation of high energy efficiency and slows down scaling rate under effective guarantee full working scope.
It is now high temperature low humidity operating mode if during P≤P1, control valve 12 closes (preferably magnetic valve).Refrigerant flow moves towards：Pressure
3 → shell-tube evaporator of contracting machine 1 → water-cooling type precool heat exchanger device 9 → evaporative condenser, 2 → electric expansion valve 4；Work as outdoor environment
For high temperature low humidity operating mode when, cooling water is easier to be evaporated, causes refrigerant to be easier to be exchanged heat, and heat exchange efficiency improves, so as to cold
Matchmaker's pressure reduces, so that the pressure detected is relatively low, so as to judge now room indirectly by the pressure value P detected
Outer operating mode is high temperature low humidity operating mode；
If P ＞ P1, control valve 12 are opened (preferably magnetic valve).It is now hot and humid operating mode, refrigerant flow moves towards：Compression
3 → the package of Wind-cooling type precool heat exchanger device 8 → evaporative condenser, 2 → electric expansion valve of machine 1 → water-cooling type precool heat exchanger device 9/ steams
Send out device 4.When outdoor environment is hot and humid operating mode, cooling water is difficult to evaporate, causes refrigerant to be difficult to exchange heat, heat exchange
Efficiency reduces, so as to which refrigerant pressure reduces seldom, so that the pressure detected is higher, so as to pass through the pressure value P detected
It can judge that now outdoor operating mode is hot and humid operating mode indirectly.
Remarks：P is refrigerant pressure in condenser, and P1 values are according to the different refrigerant arranges value difference refrigerants such as used
During R22 refrigerants, P1=1390Kpa；When refrigerant as used is R134a refrigerants, P1=910Kpa.P1 numerical values recited is root
According to obtained by substantial amounts of experimental result and empirical value.
By the description of the control process to refrigerant flow path, being set and controlled for the unit can be hot and humid, high
Under the full working scope environment such as warm low humidity, increase the heat exchange amount of unit, improve unit efficiency and Integrated part-load value, reduce
Scaling rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these improvement and modification also should be regarded as this
The protection domain of invention.
Claims (11)
- A kind of 1. vaporation-type handpiece Water Chilling Units, it is characterised in that：Including：Compressor (1) and evaporative condenser (2)；Wind-cooling type precool heat exchanger device (8), it is arranged between the compressor (1) and the evaporative condenser (2)；Water-cooling type precool heat exchanger device (9), be arranged between the compressor (1) and the evaporative condenser (2) and with it is described Wind-cooling type precool heat exchanger device (8) is connected in parallel.
- 2. vaporation-type handpiece Water Chilling Units according to claim 1, it is characterised in that：Water-cooling type precool heat exchanger device (9) bag The double-tube heat exchanger (92) for including cooling water circulation water tank (91) and being arranged in the water tank (91), refrigerant exchange heat in described sleeve pipe Flowed in device (92).
- 3. vaporation-type handpiece Water Chilling Units according to claim 2, it is characterised in that：Cooling water circulation water tank (91) go out Water pipe (91a) is connected with the oral siphon (20) of the evaporative condenser (2).
- 4. vaporation-type handpiece Water Chilling Units according to claim 2, it is characterised in that：The cooling water circulation water tank (91) and institute State and be additionally provided with water pump (5) between evaporative condenser (2).
- 5. vaporation-type handpiece Water Chilling Units according to claim 3, it is characterised in that：The evaporative condenser (2) includes steaming Hairdo refrigerant heat exchanger tube (7), spray system (21), wherein the oral siphon (20) is connected with the spray system (21).
- 6. vaporation-type handpiece Water Chilling Units according to claim 5, it is characterised in that：The evaporative condenser (2) also includes It is arranged on the blower fan (6) with vaporation-type refrigerant heat exchanger tube (7) correspondence position.
- 7. vaporation-type handpiece Water Chilling Units according to claim 1, it is characterised in that：Wind-cooling type precool heat exchanger device (8) institute Parallel branch on be additionally provided with control valve (12).
- 8. vaporation-type handpiece Water Chilling Units according to claim 1, it is characterised in that：Gas exhaust piping in the compressor (1) On be additionally provided with pressure sensor (11).
- 9. vaporation-type handpiece Water Chilling Units according to claim 1, it is characterised in that：The Wind-cooling type precool heat exchanger device (8) is Finned heat exchanger.
- A kind of 10. control method of vaporation-type handpiece Water Chilling Units, it is characterised in that：Usage right is required any one of 1-9 Vaporation-type handpiece Water Chilling Units, according to outdoor temperature and the different operating modes of humidity, the switching control of precooling is carried out to evaporative condenser (2) System regulation.
- 11. control method according to claim 10, it is characterised in that：When including pressure sensor (11) and control valve (12) when：As pressure P≤P1 of pressure sensor (11) detection, judge now as high temperature low humidity operating mode, then closing control valve (12) so that refrigerant only flows to the evaporative condenser (2) by the water-cooling type precool heat exchanger device；As the pressure P of pressure sensor (11) detection>During P1, judge now then to open control valve (12) as hot and humid operating mode, So that to flow to the vaporation-type by the water-cooling type precool heat exchanger device (9) and Wind-cooling type precool heat exchanger device (8) respectively cold for refrigerant Condenser (2)；Wherein described P1 is refrigerant working conditions change preset pressure value.
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| CN109539639A (en) * | 2018-10-17 | 2019-03-29 | 珠海格力电器股份有限公司 | Water chiller |
| CN110608492A (en) * | 2019-09-16 | 2019-12-24 | 珠海格力电器股份有限公司 | Precooling type evaporative condensation air-conditioning system and control method thereof |
| CN111256383A (en) * | 2018-11-30 | 2020-06-09 | 深圳麦克维尔空调有限公司 | Composite heat exchanger and heat exchange system with same |
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| CN112413755A (en) * | 2020-12-14 | 2021-02-26 | 珠海格力电器股份有限公司 | Precooling dehumidification device, method and system and air conditioning equipment |
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| CN113154565A (en) * | 2021-04-28 | 2021-07-23 | 山西中云智谷数据科技有限责任公司 | Indirect evaporative cooling method, apparatus and system |
| CN113587466A (en) * | 2021-06-29 | 2021-11-02 | 浙江国祥股份有限公司 | Evaporation condensation type water chilling unit with precooling section |
| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954719A (en) * | 2018-08-10 | 2018-12-07 | 天津六百光年智能科技有限公司 | Optimal control method and control system based on cooling water heat exchange system |
| CN109539639A (en) * | 2018-10-17 | 2019-03-29 | 珠海格力电器股份有限公司 | Water chiller |
| CN111256383B (en) * | 2018-11-30 | 2021-11-05 | 深圳麦克维尔空调有限公司 | Composite heat exchanger and heat exchange system with same |
| CN111256383A (en) * | 2018-11-30 | 2020-06-09 | 深圳麦克维尔空调有限公司 | Composite heat exchanger and heat exchange system with same |
| CN110608492A (en) * | 2019-09-16 | 2019-12-24 | 珠海格力电器股份有限公司 | Precooling type evaporative condensation air-conditioning system and control method thereof |
| CN110608492B (en) * | 2019-09-16 | 2023-12-15 | 珠海格力电器股份有限公司 | Precooling evaporative condensing air conditioning system and control method thereof |
| CN111457509A (en) * | 2020-03-30 | 2020-07-28 | 上海海事大学 | Energy-saving air conditioner |
| CN112413755A (en) * | 2020-12-14 | 2021-02-26 | 珠海格力电器股份有限公司 | Precooling dehumidification device, method and system and air conditioning equipment |
| CN112413755B (en) * | 2020-12-14 | 2024-05-03 | 珠海格力电器股份有限公司 | Precooling and dehumidifying device, precooling and dehumidifying method, precooling and dehumidifying system and air conditioning equipment |
| CN112944739A (en) * | 2021-04-15 | 2021-06-11 | 广东海悟科技有限公司 | Double-circulation refrigeration system using dew point temperature for cooling and control method thereof |
| CN113154565A (en) * | 2021-04-28 | 2021-07-23 | 山西中云智谷数据科技有限责任公司 | Indirect evaporative cooling method, apparatus and system |
| CN113587466A (en) * | 2021-06-29 | 2021-11-02 | 浙江国祥股份有限公司 | Evaporation condensation type water chilling unit with precooling section |
| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
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