CN106440504A - Evaporation-condensation oilless cold-hot water unit and control method thereof - Google Patents
Evaporation-condensation oilless cold-hot water unit and control method thereof Download PDFInfo
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- CN106440504A CN106440504A CN201610931723.2A CN201610931723A CN106440504A CN 106440504 A CN106440504 A CN 106440504A CN 201610931723 A CN201610931723 A CN 201610931723A CN 106440504 A CN106440504 A CN 106440504A
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- water
- heat exchanger
- heat exchange
- hosepipe
- ratio
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/54—Heating and cooling, simultaneously or alternatively
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
Abstract
The invention discloses an evaporation-condensation oilless cold-hot water unit and a control method thereof. The evaporation-condensation oilless cold-hot water unit comprises an oilless refrigeration system, a wind-side condensation radiating system, a water-side condensation cooling system, a cold-hot water heat exchange system and a control system, wherein the oilless refrigeration system comprises a magnetic levitation variable-frequency centrifugal compressor, a copper fin heat exchanger, a coiler heat exchanger, an electronic expansion valve and a shell-and-tube heat exchanger. The evaporation-condensation oilless cold-hot water unit disclosed by the invention is an integrated product, wherein efficient energy conservation and wide supply of cold-hot water can be realized, the floor area is greatly saved, the water consumption is reduced, the energy efficiency of the system is high, the equipment is simple, the mounting and using and the operation maintenance are convenient, and the evaporation-condensation oilless cold-hot water unit is particularly suitable for the underground spaces such as subway stations.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, to a kind of evaporative condenser oil-free water chiller-heater unit and its control
Method.
Background technology
Traditional water-cooled cooling-water machine combines the water-cooled cooling water air conditioner system low-temperature receiver of cooling tower and its pipeline, is carried out using cooling tower
Radiating, carries out medium conveying efficiency using water pump low；Compressor need to be lubricated by machine oil using classic screw, vortex etc.,
The heat transfer effect that machine oil affects two devices leads to efficiency low；Machine oil affects inside and outside connecting length simultaneously and leads to inside and outside machine placement limited
Also efficiency can be affected simultaneously.The air conditioning system low-temperature receiver of traditional water-cooled cold water type unit+cooling tower+water pump composition, is not suitable for
There is no the occasion of cooling tower mounting condition, such as city underground station, it is not suitable for the region of hydropenia, simultaneously this water-cooled cold water type machine yet
3 circulations of air conditioning system low-temperature receiver of group+cooling tower+water pump composition, after 2 times heat hands over heat, system energy efficiency is low, and equipment is complicated, equipment
Between the more remote efficiency of distance decline more obvious.
Therefore, prior art has yet to be improved and developed.
Content of the invention
A kind of in view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide evaporative condenser oil-free water chiller-heater unit
And its control method is it is intended to the system energy efficiency solving existing water-cooled cooling water air conditioner system low-temperature receiver is low, equipment is complicated, is not suitable for
City underground station, hydropenia region etc. do not have the technical problem of the occasion of cooling tower mounting condition.
Technical scheme is as follows：
A kind of evaporative condenser oil-free water chiller-heater unit, including：Oil-free refrigeration system for refrigeration；Described oil-free refrigeration system bag
Include：The magnetic suspension frequency conversion centrifugal compressor that is sequentially connected by pipeline, copper fin heat exchanger, hosepipe heat exchanger, electronic expansion
Valve, shell and tube exchanger；Wind side condensation for being carried out heat exchange radiating by air flow and described hosepipe heat exchanger is dissipated
Hot systems；Water side for carrying out heat exchange radiating by recirculated water and described hosepipe heat exchanger condenses cooling system；For
By heat exchange water is flow through the hot and cold water heat-exchange system that described shell and tube exchanger carries out heat exchange；And for controlling evaporation cold
The control system that solidifying oil-free water chiller-heater unit runs；Wherein, described magnetic suspension frequency conversion centrifugal compressor, for by low-temp low-pressure gas
State refrigerant compression is high temperature and high pressure gaseous refrigerant；Described copper fin heat exchanger, for being centrifuged pressure by described magnetic suspension frequency conversion
The high temperature and high pressure gaseous refrigerant that contracting machine is discharged is condensed into high pressure half gas-liquid refrigerant；Described hosepipe heat exchanger, for by institute
High pressure half gas-liquid refrigerant stating the outflow of copper fin heat exchanger is condensed into high pressure liquid refrigerant；Described electric expansion valve, is used for
The high pressure liquid refrigerant throttling that described hosepipe heat exchanger is flowed out becomes low-pressure, liquid refrigerant；Described shell-tube type heat exchange
Device, the low-pressure, liquid refrigerant for flowing out described electric expansion valve absorbs heat and is vaporizated into low-temp low-pressure gaseous refrigerant.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described water side condensation cooling system includes：Cyclic water tank；
Defecator for filtration cycle impurities in water；For the circulation being lifted the recirculated water after impurity screening from lower toward eminence
Water elevator pump；It is arranged on described hosepipe heat exchanger top, for the recirculated water uniform flow exporting described recirculated water elevator pump
Go out on described hosepipe heat exchanger to be formed the water-distributing device that moisture film is evaporated radiating；And it is arranged on described hosepipe heat exchanger
Bottom, for being received from the modified PVC filler that the recirculated water that described hosepipe heat exchanger flows down is radiated；Described recirculated water
Case, described defecator, described recirculated water elevator pump, described water-distributing device are sequentially connected by circulating water pipeline；Described circulation
Water tank is arranged on the bottom of described modified PVC filler, is stored for being collected from the recirculated water that modified PVC filler stays.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described wind side condensation cooling system includes：It is arranged on described
Hosepipe heat exchanger side is used for providing the upper strata inlet air filtering device of air filtering to hosepipe heat exchanger；It is arranged on institute
State modified PVC filler side for providing lower floor's inlet air filtering device of air filtering to modified PVC filler；For removing
Through carrying out water droplet in the hot-air after heat exchange with the recirculated water on described hosepipe heat exchanger and described modified PVC filler
Baffle device for water；And for providing air flow power to discharge dissipating of unit by removing the hot-air after water droplet through described baffle device for water
Hot-air blower.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described oil-free refrigeration system also includes：It is arranged on described shell
On pipeline between pipe heat exchanger and described magnetic suspension frequency conversion centrifugal compressor, the low-pressure side for making refrigeration system runs on
Safety range prevents low pressure from returning the low-voltage protective switch that liquid produces liquid hammer.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described oil-free refrigeration system also includes：It is arranged on described shell
It is used on pipe heat exchanger controlling the relief valve of pressure in refrigeration system.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described case tube heat exchanger is full-liquid type case tube heat exchanger, does
Formula case tube heat exchanger and one kind of falling film type case tube heat exchanger.
Described evaporative condenser oil-free water chiller-heater unit, wherein, described shell and tube exchanger is provided with first user side
Fast interface and second user side fast interface；Described hot and cold water heat-exchange system includes：For by heat exchange water from described first
User side fast interface is flowed in described shell and tube exchanger after carrying out heat exchange and arranges from described second user side fast interface
The heat exchange water pump going out；It is arranged on described shell and tube exchanger and be used for controlling the flow of heat exchange water to prevent water shortage or disconnected
The current protection switch of stream；And be arranged on the fast interface of described second user side for controlling the leaving water temperature of heat exchange water to prevent
The only anti-frost protection switch of the copper pipe in bursting by freezing case tube heat exchanger.
A kind of water chiller-heater unit control method based on above-described evaporative condenser oil-free water chiller-heater unit, described cold and hot
Water dispenser group control method passes through the return water temperature T of heat exchange waterReturnIt is controlled；Described water chiller-heater unit control method includes：
During cooling operation mode, work as TReturn≤T0When, control unit unloading halt instruction to start, N1After second, control magnetcisuspension first
Floating frequency conversion centrifugal compressor is unloaded in K% ratio and runs；N2After second, control heat exchange water pump to unload in K% ratio and run, simultaneously
Judge the real time temperature T of anti-frost protection switch detectionFreezeWhether it is higher than T01, restart heat exchange water pump when no, then repeat
Judge up to TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, control recirculated water elevator pump to unload in K% ratio and run；N4After second, control
Cooling fan processed is unloaded in K% ratio and runs；By this logic continuous circular flow unloading, until magnetic suspension frequency conversion centrifugal compressor
After dead halt, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely, and now magnetic suspension becomes
Frequency centrifugal compressor enters holding state；
During cooling operation mode, work as TReturn＞ T0When, control first and open heat exchange water pump in K% ratio；N5After second, in K% ratio
ON cycle water elevator pump；N6After second, open cooling fan in K% ratio；N7Second after, in K% ratio open magnetic suspension frequency conversion from
Heart compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, then unload
It is loaded onto K1The long-time Effec-tive Function of % sub-load；
During heating operation mode, work as TReturn≥T0When, control unit unloading halt instruction to start, N1After second, control magnetic suspension first
Frequency conversion centrifugal compressor is unloaded in K% ratio and runs；N2After second, control heat exchange water pump to unload in K% ratio and run, judge simultaneously
The real time temperature T of anti-frost protection switch detectionFreezeWhether it is higher than T01, restart heat exchange water pump when no, then repeat to judge
Until TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, control recirculated water elevator pump to unload in K% ratio and run；N4After second, control radiating
Blower fan is unloaded in K% ratio and runs；By this logic continuous circular flow unloading, until magnetic suspension frequency conversion centrifugal compressor stops completely
After machine, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely, and now magnetic suspension frequency conversion is centrifuged
Compressor enters holding state；
During heating operation mode, work as TReturn＜ T0When, control first and open heat exchange water pump in K% ratio；N5After second, in K% ratio
ON cycle water elevator pump；N6After second, open cooling fan in K% ratio；N7After second, open magnetic suspension frequency conversion centrifugation in K% ratio
Compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, then unload
To K1The long-time Effec-tive Function of load of %；
Wherein, TReturnFor backwater real-time temperature values, T0For return water temperature setting value, N1To N7For each action interval time, M is Serpentiss type
Heat exchange of heat pipe surface moisture dries up time used, K, K completely1For putting into ratio value, TFreezeThe reality detecting for anti-frost protection switch
Shi Wendu, T01For anti-frost protection design temperature.
Beneficial effects of the present invention：The invention provides a kind of evaporative condenser oil-free water chiller-heater unit and its control method,
Described evaporative condenser oil-free water chiller-heater unit, including：Oil-free refrigeration system, wind side condensation cooling system, water side condensation cooling system
System, hot and cold water heat-exchange system and control system, it is integrated form integration product, can realize energy-efficient and wide cooling
While hot water, significantly save floor space, save the effect consumption of water, system energy efficiency is high, and equipment is simple, installs and uses and runs dimension
Shield is convenient, is particularly well-suited to the underground spaces such as subway station.
Brief description
Fig. 1 is the inside partial structural diagram of evaporative condenser oil-free water chiller-heater unit of the present invention.
Fig. 2 is the main body partial structural diagram of evaporative condenser oil-free water chiller-heater unit of the present invention.
Fig. 3 is the outer partial structural representation of evaporative condenser oil-free water chiller-heater unit of the present invention.
Specific embodiment
The present invention provides a kind of evaporative condenser oil-free water chiller-heater unit and its control method, for making the purpose of the present invention, skill
Art scheme and effect are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should manage
Solution, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of evaporative condenser oil-free water chiller-heater unit, including：Oil-free refrigeration system, the condensation radiating of wind side
System, water side condensation cooling system, hot and cold water heat-exchange system.
As shown in figure 1, described oil-free refrigeration system includes：The magnetic suspension frequency conversion centrifugal compressor being sequentially connected by pipeline
11st, copper fin heat exchanger 12, hosepipe heat exchanger 13, electric expansion valve 14, shell and tube exchanger 15；Wherein, described magnetic suspension
Frequency conversion centrifugal compressor, for cold-producing medium adherence pressure, by low-temp low-pressure gaseous refrigerant boil down to high pressure gaseous system
Cryogen；Described copper fin heat exchanger, for preliminary condensation radiating, the High Temperature High Pressure that described magnetic suspension frequency conversion centrifugal compressor is discharged
Gaseous refrigerant is condensed into high pressure half gas-liquid refrigerant；Described hosepipe heat exchanger, for condensation radiating, described copper wing formula is changed
High pressure half gas-liquid refrigerant that hot device flows out is condensed into high pressure liquid refrigerant；Described electric expansion valve, for throttling, will be described
The high pressure liquid refrigerant throttling that hosepipe heat exchanger flows out becomes low-pressure, liquid refrigerant；Described shell and tube exchanger, is used for
Heat absorption, the heat of absorption refrigerating water is allowed to lower the temperature, and the low-pressure, liquid refrigerant that described electric expansion valve is flowed out absorbs heat vapour
Turn to low-temp low-pressure gaseous refrigerant.Shell and tube exchanger 15 of the present invention is efficient shell type heat exchanger.Wherein, described height
Half gas-liquid pressing half gas-liquid refrigerant refers to some refrigerant for gaseous state, and some refrigerant is liquid, that is, liquid state is altogether
The cold-producing medium deposited.
Oil-free refrigeration system of the present invention is by magnetic suspension frequency conversion centrifugal compressor 11, copper fin heat exchanger 12, hosepipe
The core component compositions such as heat exchanger 13, electric expansion valve 14, shell and tube exchanger 15 and related valve member.Wherein magnetic suspension frequency conversion from
Heart compressor 11 is lubricated without lubricating oil and axle envelope, does not have lubricating oil in refrigeration system pipeline and heat exchanger, is effectively lifted
Copper fin heat exchanger 12, hosepipe heat exchanger 13, the heat exchange efficiency of shell and tube exchanger 15.By copper fin heat exchanger 12 pre-cooling
Scale suppression technology and scale removal run control model, can effectively solve the problem that evaporative condenser unit scale problems it is ensured that the unit operation life-span
And reliable and stable operation.
Oil-free refrigeration system of the present invention is used for freezing；Described wind side condensation cooling system be used for by air flow with
Described hosepipe heat exchanger carries out heat exchange radiating；Described water side condensation cooling system is used for by recirculated water and described hosepipe
Heat exchanger carries out heat exchange radiating；Described hot and cold water heat-exchange system is used for by heat exchange water is flow through described shell and tube exchanger
Carry out heat exchange；Described control system is used for controlling evaporative condenser oil-free water chiller-heater unit to run.
Further, as shown in Figure 1 to Figure 3, described water side condensation cooling system includes：Cyclic water tank 31；For filtering
The defecator 32 of circulation impurities in water；For the recirculated water after impurity screening is lifted from the recirculated water that lower is lifted toward eminence
Pump 33；It is arranged on described hosepipe heat exchanger 13 top, for the recirculated water uniform flow exporting described recirculated water elevator pump 33
Go out on described hosepipe heat exchanger 13 to be formed the water-distributing device 34 that moisture film is evaporated radiating；And be arranged on described hosepipe and change
Hot device 13 bottom, for being received from the modified PVC filler 35 that the recirculated water that described hosepipe heat exchanger 13 flows down is radiated；Institute
State cyclic water tank 31, described defecator 32, described recirculated water elevator pump 33, described water-distributing device 34 by circulating water pipeline 36
It is sequentially connected；Described cyclic water tank 31 is arranged on the bottom of described modified PVC filler 35, is used for being collected from modified PVC filler 35
The recirculated water staying is stored.
Water-distributing device 34 of the present invention is arranged at hosepipe heat exchanger top, and the water distributor in water-distributing device 34 flows out
The quasi- cloth of crystal falls within and forms uniform and thin moisture film on hosepipe heat exchanger 13, provides precondition for flash distillation.
In condensation cooling system in water side of the present invention, the process that circulates of recirculated water is：Cyclic water tank 31 is to circulation
Water is stored and voltage stabilizing, and whole process is through flowing in circulating water pipeline 36；Subsequently enter Circulated water filter 32, filter off impurity；
Enter back into recirculated water elevator pump 33, so that recirculated water is walked toward eminence from lower, and corresponding hydraulic pressure is provided；Carry in recirculated water elevator pump 33
Enter water-distributing device 34 after rising, uniformly divide water；Recirculated water flows to hosepipe heat exchanger 13 surface under gravity, forms water
Film evaporative heat loss；Afterwards recirculated water again under gravity, sprinkle on modified PVC filler 35 surface, recirculated water by air cooling-down,
Finally come together in cyclic water tank 31, complete a circulation.
Further, as shown in Figure 2 and Figure 3, described wind side condensation cooling system includes：It is arranged on described hosepipe heat exchange
Device 13 side is used for providing the upper strata inlet air filtering device 21a of air filtering to hosepipe heat exchanger 13；It is arranged on described
Modified PVC filler 35 side is used for providing the lower floor inlet air filtering device 21b of air filtering to modified PVC filler 35；With
In removing through carrying out the heat sky after heat exchange with the recirculated water on described hosepipe heat exchanger 13 and described modified PVC filler 35
The baffle device for water 22 of water droplet in gas；And it is empty by removing the heat after water droplet through described baffle device for water 22 for providing air flow power
Gas discharges the cooling fan 23 of unit.
Walk cold-producing medium in hosepipe heat exchanger 13 of the present invention, pipe is outer to be coated by moisture film, flash evaporation of water film formed aqueous vapor by
The power that cooling fan 23 provides takes away heat；Upper strata inlet air filtering device 21a is to the sky entering hosepipe heat exchanger 13
Gas carries out being filtered to remove the object of larger particles, effectively prevents laying dust from receiving dirt；Baffle device for water 22 guarantees the steam discharged without water
Drip, effective guarantee air draft quality.
In condensation cooling system in wind side of the present invention, air from the sequential process entering unit to discharge unit is：One
Part outdoor air enters from upper strata inlet air filtering device 21a, filters after larger particles object through thick effect, changes with hosepipe
Moisture film on hot device 13 carries out Re Jiaore；Another part outdoor air enters from lower floor inlet air filtering device 21b, imitates through thick
After filtering larger particles object, along the curve duct flows of modified PVC filler 35, in flow process, to modified PVC filler 35
On the water containing temperature that flows down from hosepipe heat exchanger 13 carry out wind cooling temperature lowering, so that the water temperature of cyclic water tank 31 is maintained at certain
Steady state value；Eventually pass and carry out the hot-air after heat exchange with the recirculated water on hosepipe heat exchanger 13 and modified PVC filler 35,
All remove remaining water droplet in case the water that wafts through baffle device for water 22；Through cooling fan 23, hot-air is discharged unit after, be air
Flowing provides power.
Further, as shown in figure 1, described oil-free refrigeration system also includes：It is arranged on described shell and tube exchanger 15 He
On pipeline between described magnetic suspension frequency conversion centrifugal compressor 11, the low-pressure side for making refrigeration system runs on safety range and prevents
Only low pressure returns the low-voltage protective switch 16 that liquid produces liquid hammer.
Further, as shown in figure 1, described oil-free refrigeration system also includes：It is arranged on described shell and tube exchanger 15
For controlling the relief valve 17 of pressure in refrigeration system.
Further, described case tube heat exchanger 15 is full-liquid type case tube heat exchanger, dry type case tube heat exchanger and falling film type shell
One kind of heat exchange of heat pipe.
Further, as shown in figure 1, first user side fast interface is provided with described shell and tube exchanger 15（In figure
Not shown）With second user side fast interface 19；Described hot and cold water heat-exchange system includes：For by heat exchange water from described first
User side fast interface is flowed in described shell and tube exchanger 15 and carries out after heat exchange from described second user side fast interface
The heat exchange water pump of 19 discharges（In figure is not shown）；It is arranged on described shell and tube exchanger 15 and be used for controlling the stream of heat exchange water
Amount prevents the current protection switch 42 of water shortage or cutout；And be arranged on and be used for controlling on described second user side fast interface 19
The leaving water temperature heating exchanged water prevents the anti-frost protection of the copper pipe in case tube heat exchanger 15 described in bursting by freezing from switching 43.Institute of the present invention
State hot and cold water heat-exchange system and include heat exchange water pump, current protection switch 42, anti-frost protection switch 43, but do not refer to only wrap
Include these, more specifically, it is mainly quick by described shell and tube exchanger 15, first user side fast interface, second user side
The core component compositions such as interface 19, current protection switch 42, anti-frost protection switch 43.
It should be noted that low-voltage protective switch of the present invention, relief valve, current protection switch and anti-frost protection are opened
Pass is prior art, and here is omitted.
Cooling heat absorption is carried out by shell and tube exchanger 15 refrigerant side to water side, provides freezing water for user side；
It is reliable using system safety operation, anti-frost protection switch 43 makes chilled water leaving water temperature be not less than safety value operation, prevents shell
Pipe heat exchanger 15 copper pipe bursting by freezing；Current protection switch 42 makes heat exchange aqueous system run on normal discharge all the time, prevents heat friendship
Change water water shortage or cutout；Low-voltage protective switch 16 makes refrigeration system low-pressure side run on safety range, prevents low pressure from returning liquid
Product liquid hammer；When relief valve 17 makes refrigeration system extremely occur, also safety is controlled, unloads when system pressure exceedes certain value, will
Cold-producing medium returns to collecting tank by pipe special.
When heat exchange water is 12 DEG C of chilled waters, flow process in described hot and cold water heat-exchange system for the chilled water is：12
DEG C first user side fast interface through side for the chilled water, enters case tube heat exchanger 15, is pulled away heat, lowers the temperature and freezes for 7 DEG C
Water, flows successively through current protection switch 42, anti-frost protection switch 43, prevention hydropenia and chilled water temperature too low bursting by freezing heat-exchanger copper
Pipe, the finally second user side fast interface 19 through opposite side again, 7 DEG C of chilled waters are given user.
Further, equally so that heat exchange water is for 12 DEG C of chilled waters as a example, the refrigeration of oil-free refrigeration system of the present invention
Process is：First, cold-producing medium from magnetic suspension frequency conversion centrifugal compressor 11 out after, pressure high temperature hot gas are become by low-pressure gas,
Carry out pre-cooling cooling after being introduced into copper fin heat exchanger 12, contribute to suppression and be directly entered hosepipe heat exchanger 13 fouling；Then
Enter back into hosepipe heat exchanger 13 to cool down again, cold-producing medium is condensed into high-pressure liquid by high-pressure gaseous；Then flow through electronic expansion
Valve 14, cold-producing medium throttles into low-pressure liquid by high-pressure liquid；Enter shell and tube exchanger 15,12 DEG C of freezings of refrigerant suction immediately
After the heat of water, chilled water is down to 7 DEG C, and cold-producing medium is gasificated into low-pressure gaseous by low-pressure liquid, returns magnetic suspension frequency conversion centrifugation pressure
Contracting machine 11, completes a kind of refrigeration cycle.And heating operations are contrary with the flow process of above process of refrigerastion, those skilled in the art can
Corresponding heating operations are learnt according to above process of refrigerastion, here is omitted.
Evaporative condenser oil-free water chiller-heater unit of the present invention, on the premise of equal heat exchange amount, its required radiating air quantity
It is only the 1/4 ~ 1/3 of legacy system；Its volume also not enough legacy system 1/3, it can be installed on the underground space or underground hole
Road, is highly suitable for subway station, and the exhaust system in conjunction with subway station is positioned in underground air duct, can be in the situation of no cooling tower
Under realize air draft condensation radiating refrigeration.
The embodiment of the present invention additionally provides a kind of hot and cold water based on above-described evaporative condenser oil-free water chiller-heater unit
Unit allocation method, described water chiller-heater unit control method passes through the return water temperature T of heat exchange waterReturnIt is controlled；Described cold and hot
Water dispenser group control method includes：
During cooling operation mode, work as TReturn≤T0When, control unit unloading halt instruction to start, this state N to be maintained1After second,
Control magnetic suspension frequency conversion centrifugal compressor to unload in K% ratio first to run；N2After second, control heat exchange water pump in K% ratio
Unloading runs, and judges the real time temperature T of anti-frost protection switch detection simultaneouslyFreezeWhether it is higher than T01, restart heat exchange when no
Water pump, then repeats to judge up to TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, recirculated water elevator pump is controlled to unload carrying in K% ratio
OK；N4After second, control cooling fan to unload in K% ratio and run；By this logic continuous circular flow unloading, until magnetic suspension becomes
After frequency centrifugal compressor dead halt, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely,
Now magnetic suspension frequency conversion centrifugal compressor enters holding state；Namely water chiller-heater unit enters start-up loading of awaiting orders and runs mould
Formula.
During cooling operation mode, work as TReturn＞ T0When, output order controls in K% ratio unlatching heat exchange water pump first；N5Second
Afterwards, in K% ratio ON cycle water elevator pump；N6After second, open cooling fan in K% ratio；N7After second, open in K% ratio
Magnetic suspension frequency conversion centrifugal compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses full bearing
Lotus runs, and is then offloaded to K1The long-time Effec-tive Function of % sub-load；This process briefly, that is, by K% level level is unloaded
Carry, until shutting down, until working as TReturn≤T0When, enter unloading and shut down operational mode.
During concrete application, for example, when subway station environmental control system system detectio at central level to TReturn＞ T0When, send cold source of air conditioning
When instructing during refrigerating operaton, output order opens chilled water pump in 10% ratio first（Heat exchange water pump）；After 60 seconds, by 10% ratio
Example ON cycle water elevator pump；After 60 seconds, open cooling fan in 10% ratio；After 60 seconds, open magnetic suspension in 10% ratio and become
Frequency centrifugal compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, so
It is offloaded to the 80% long-time Effec-tive Function of load afterwards；Until working as TReturn≤T0When, enter unloading and shut down operational mode.
During heating operation mode, work as TReturn≥T0When, control unit unloading halt instruction to start, N1After second, control magnetcisuspension first
Floating frequency conversion centrifugal compressor is unloaded in K% ratio and runs；N2After second, control heat exchange water pump to unload in K% ratio and run, sentence simultaneously
The real time temperature T of disconnected anti-frost protection switch detectionFreezeWhether it is higher than T01, restart heat exchange water pump when no, then repeat to sentence
Break up to TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, control recirculated water elevator pump to unload in K% ratio and run；N4After second, control and dissipate
Hot-air blower is unloaded in K% ratio and runs；By this logic continuous circular flow unloading, until magnetic suspension frequency conversion centrifugal compressor is complete
After shutdown, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely, now magnetic suspension frequency conversion from
Heart compressor enters holding state；Namely water chiller-heater unit is awaited orders start-up loading operational mode.
During heating operation mode, work as TReturn＜ T0When, control first and open heat exchange water pump in K% ratio；N5After second, by K% ratio
Example ON cycle water elevator pump；N6After second, open cooling fan in K% ratio；N7Second after, in K% ratio open magnetic suspension frequency conversion from
Heart compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, then unload
It is loaded onto K1The long-time Effec-tive Function of load of %；Briefly, that is, first startup optimization, load by K% level level, until full negative
Lotus, after be offloaded to K1The long-time Effec-tive Function of load of %, until work as TReturn≥T0When, enter unloading and shut down operational mode.
Wherein, TReturnFor backwater real-time temperature values, T0For return water temperature setting value, N1To N7For each action value interval time, M
Dry up time value used, K, K for hosepipe heat exchanger surface moisture completely1For putting into ratio value, TFreezeSwitch inspection for anti-frost protection
The real time temperature measuring, T01For anti-frost protection design temperature.
T0The a certain temperature between 7 DEG C -12 DEG C, such as 7 DEG C, 10 DEG C or 12 DEG C, N can be set in advance as1、N2、N3、
N4、N5、N6、N760 can be disposed as that is to say, that arranging the interval time of 60 seconds, T01Could be arranged to 2 DEG C, K can be arranged
Unload in 10% ratio or open, K that is to say, that can arrange for 101Could be arranged to 80 that is to say, that can arrange by
The 80% long-time Effec-tive Function of load, M could be arranged to 30min, verifies, the time that dries up can be complete more than 30mim by test
Full blow dry hosepipe heat exchanger surface moisture.
In addition, it is necessary to explanation, when the built-in Hz number of magnetic suspension frequency conversion centrifugal compressor of the present invention reaches 50Hz
It is oepration at full load.
The present invention passes through magnetic suspension frequency conversion centrifugal compressor applications technology, hosepipe heat exchanger high efficient heat exchanging technology, copper
The pre- refrigeration technique of fin heat exchanger, efficient shell type heat exchanger heat transfer technology connected applications, in conjunction with peculiar control method, realize section
Ground, water saving, efficient energy-saving, refrigeration（Heat）Energy efficiency coefficient than traditional water cooled chiller coordinate cooling tower energy saving of system 35% with
On.
Evaporative condenser oil-free water chiller-heater unit of the present invention, condenses cooling system, water including oil-free refrigeration system, wind side
Side condensation cooling system, hot and cold water heat-exchange system and control system, it is integrated form integration product, is capable of efficiently saving
Can be with wide for freezing（Heat）While water temperature difference is run, significantly save floor space, save the effect consumption of water, install and use and run
Easy to maintenance.
Evaporative condenser oil-free water chiller-heater unit of the present invention, has gathered magnetic suspension frequency conversion centrifugal compressor technology, evaporation
Condensing heat exchanger technology and directly swollen evaporation technique, a complete set of system only three times circulation heat exchange twice, and combination controlling method is soft
Close, system energy efficiency is high, equipment is simple, is particularly suitable as the air conditioner environmental control system of the underground spaces such as subway station.
In sum, the invention provides a kind of evaporative condenser oil-free water chiller-heater unit and its control method, described evaporation
Condensation oil-free water chiller-heater unit, including：Oil-free refrigeration system, wind side condensation cooling system, water side condensation cooling system, hot and cold water
Heat-exchange system and control system, it is integrated form integration product, can realize the same of energy-efficient and wide confession hot and cold water
When, significantly save floor space, save the effect consumption of water, system energy efficiency is high, and equipment is simple, install and use and operation maintenance is convenient,
It is particularly well-suited to the underground spaces such as subway station.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Shield scope.
Claims (8)
1. a kind of evaporative condenser oil-free water chiller-heater unit is it is characterised in that include：
Oil-free refrigeration system for refrigeration；Described oil-free refrigeration system includes：The magnetic suspension frequency conversion being sequentially connected by pipeline
Centrifugal compressor, copper fin heat exchanger, hosepipe heat exchanger, electric expansion valve, shell and tube exchanger；
Wind side for carrying out heat exchange radiating by air flow and described hosepipe heat exchanger condenses cooling system；
Water side for carrying out heat exchange radiating by recirculated water and described hosepipe heat exchanger condenses cooling system；
For by heat exchange water is flow through the hot and cold water heat-exchange system that described shell and tube exchanger carries out heat exchange；
And the control system for controlling evaporative condenser oil-free water chiller-heater unit to run；
Wherein, described magnetic suspension frequency conversion centrifugal compressor, for by low-temp low-pressure gaseous refrigerant boil down to high pressure gaseous
Cold-producing medium；
Described copper fin heat exchanger, the high temperature and high pressure gaseous refrigerant for discharging described magnetic suspension frequency conversion centrifugal compressor is cold
Coagulate for high pressure half gas-liquid refrigerant；
Described hosepipe heat exchanger, high pressure half gas-liquid refrigerant for flowing out described copper fin heat exchanger is condensed into high pressure liquid
State cold-producing medium；
Described electric expansion valve, the high pressure liquid refrigerant throttling for flowing out described hosepipe heat exchanger becomes low-pressure liquid
Cold-producing medium；
Described shell and tube exchanger, the low-pressure, liquid refrigerant absorption heat for flowing out described electric expansion valve is vaporizated into low
Warm low-pressure gaseous refrigerant.
2. evaporative condenser oil-free water chiller-heater unit according to claim 1 is it is characterised in that the condensation cooling of described water side is
System includes：
Cyclic water tank；
Defecator for filtration cycle impurities in water；
For the recirculated water elevator pump being lifted the recirculated water after impurity screening from lower toward eminence；
It is arranged on described hosepipe heat exchanger top, the recirculated water for exporting described recirculated water elevator pump uniformly flows out to institute
State and the water-distributing device that moisture film is evaporated radiating is formed on hosepipe heat exchanger；
And it is arranged on described hosepipe heat exchanger bottom, dissipated for being received from the recirculated water that described hosepipe heat exchanger flows down
The modified PVC filler of heat；
Described cyclic water tank, described defecator, described recirculated water elevator pump, described water-distributing device pass through circulating water pipeline successively
Connect；
Described cyclic water tank is arranged on the bottom of described modified PVC filler, for being collected from the recirculated water that modified PVC filler stays
Stored.
3. evaporative condenser oil-free water chiller-heater unit according to claim 2 is it is characterised in that the condensation radiating of described wind side is
System includes：
It is arranged on described hosepipe heat exchanger side for providing the upper strata air intake air mistake of air filtering to hosepipe heat exchanger
Filter device；
It is arranged on described modified PVC filler side for providing lower floor's air intake air filtration of air filtering to modified PVC filler
Device；
For removing through carrying out the heat after heat exchange with the recirculated water on described hosepipe heat exchanger and described modified PVC filler
The baffle device for water of in the air water droplet；
And for providing air flow power will to remove the radiation air that the hot-air after water droplet discharges unit through described baffle device for water
Machine.
4. evaporative condenser oil-free water chiller-heater unit according to claim 1 it is characterised in that described oil-free refrigeration system also
Including：It is arranged on the pipeline between described shell and tube exchanger and described magnetic suspension frequency conversion centrifugal compressor, be used for making refrigeration
The low-pressure side of system runs on safety range prevents low pressure from returning the low-voltage protective switch that liquid produces liquid hammer.
5. evaporative condenser oil-free water chiller-heater unit according to claim 1 it is characterised in that described oil-free refrigeration system also
Including：It is arranged on described shell and tube exchanger and be used for controlling the relief valve of pressure in refrigeration system.
6. evaporative condenser oil-free water chiller-heater unit according to claim 1 is it is characterised in that described case tube heat exchanger is full
One kind of liquid formula case tube heat exchanger, dry type case tube heat exchanger and falling film type case tube heat exchanger.
7. evaporative condenser oil-free water chiller-heater unit according to claim 3 is it is characterised in that on described shell and tube exchanger
It is provided with first user side fast interface and second user side fast interface；Described hot and cold water heat-exchange system includes：
Carry out heat exchange for being flowed in described shell and tube exchanger heat exchange water from described first user side fast interface
The heat exchange water pump discharged from described second user side fast interface afterwards；
It is arranged on and be used on described shell and tube exchanger controlling the flow of heat exchange water to prevent water shortage or the current of cutout from protecting
Shield switch；
And be arranged on the fast interface of described second user side for controlling the leaving water temperature of heat exchange water to prevent bursting by freezing package from changing
The anti-frost protection switch of the copper pipe in hot device.
8. a kind of water chiller-heater unit control method based on the evaporative condenser oil-free water chiller-heater unit described in claim 7, it is special
Levy and be, described water chiller-heater unit control method passes through the return water temperature T of heat exchange waterReturnIt is controlled；Described water chiller-heater unit
Control method includes：
During cooling operation mode, work as TReturn≤T0When, control unit unloading halt instruction to start, N1After second, control magnetcisuspension first
Floating frequency conversion centrifugal compressor is unloaded in K% ratio and runs；N2After second, control heat exchange water pump to unload in K% ratio and run, simultaneously
Judge the real time temperature T of anti-frost protection switch detectionFreezeWhether it is higher than T01, restart heat exchange water pump when no, then repeat
Judge up to TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, control recirculated water elevator pump to unload in K% ratio and run；N4After second, control
Cooling fan processed is unloaded in K% ratio and runs；By this logic continuous circular flow unloading, until magnetic suspension frequency conversion centrifugal compressor
After dead halt, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely, and now magnetic suspension becomes
Frequency centrifugal compressor enters holding state；
During cooling operation mode, work as TReturn＞ T0When, control first and open heat exchange water pump in K% ratio；N5After second, in K% ratio
ON cycle water elevator pump；N6After second, open cooling fan in K% ratio；N7Second after, in K% ratio open magnetic suspension frequency conversion from
Heart compressor；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, then unload
It is loaded onto K1The long-time Effec-tive Function of % sub-load；
During heating operation mode, work as TReturn≥T0When, control unit unloading halt instruction to start, N1After second, magnetic suspension is controlled to become first
Frequency centrifugal compressor is unloaded in K% ratio and runs；N2After second, control heat exchange water pump to unload in K% ratio and run, judge anti-simultaneously
Freeze the real time temperature T of protection switch detectionFreezeWhether it is higher than T01, restart heat exchange water pump when no, then repeat to judge directly
To TFreeze＞ T01；Work as TFreeze＞ T01When, N3After second, control recirculated water elevator pump to unload in K% ratio and run；N4After second, control radiation air
Machine is unloaded in K% ratio and runs；By this logic continuous circular flow unloading, until magnetic suspension frequency conversion centrifugal compressor dead halt
Afterwards, after M minute, hosepipe heat exchanger surface moisture dries up completely, stops cooling fan completely, now magnetic suspension frequency conversion centrifugation pressure
Contracting machine enters holding state；
During heating operation mode, work as TReturn＜ T0When, control first and open heat exchange water pump in K% ratio；N5After second, open in K% ratio
Open recirculated water elevator pump；N6After second, open cooling fan in K% ratio；N7After second, open magnetic suspension frequency conversion centrifugation pressure in K% ratio
Contracting machine；Load by the continuous circular flow of this logic, until magnetic suspension frequency conversion centrifugal compressor presses oepration at full load, be then offloaded to
K1The long-time Effec-tive Function of load of %；
Wherein, TReturnFor backwater real-time temperature values, T0For return water temperature setting value, N1To N7For each action interval time, M is Serpentiss type
Heat exchange of heat pipe surface moisture dries up time used, K, K completely1For putting into ratio value, TFreezeThe reality detecting for anti-frost protection switch
Shi Wendu, T01For anti-frost protection design temperature.
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| CN110906477A (en) * | 2019-11-07 | 2020-03-24 | 广东申菱环境系统股份有限公司 | Efficient and stable magnetic suspension water chilling unit, control method and device |
| CN112556221A (en) * | 2020-12-10 | 2021-03-26 | 珠海格力电器股份有限公司 | Evaporative cooling type direct expansion unit and control method thereof |
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| GB576921A (en) * | 1944-04-22 | 1946-04-26 | Standard Pressed Steel Co | Improvements in or relating to refrigerating systems |
| US5099655A (en) * | 1991-02-06 | 1992-03-31 | Rayco Enterprises, Inc. | Refrigeration system for flooded shell evaporator |
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| CN112556221A (en) * | 2020-12-10 | 2021-03-26 | 珠海格力电器股份有限公司 | Evaporative cooling type direct expansion unit and control method thereof |
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| CN106440504B (en) | 2022-06-07 |
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