CN108844265A - A kind of energy-saving and water-saving type heat water-spraying removes defrosting system - Google Patents
A kind of energy-saving and water-saving type heat water-spraying removes defrosting system Download PDFInfo
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- CN108844265A CN108844265A CN201810977481.XA CN201810977481A CN108844265A CN 108844265 A CN108844265 A CN 108844265A CN 201810977481 A CN201810977481 A CN 201810977481A CN 108844265 A CN108844265 A CN 108844265A
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- water
- defrosting
- saving
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Classifications
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/10—Removing frost by spraying with fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of energy-saving and water-saving type heat water-sprayings to remove defrosting system.The present invention is made of refrigeration system, defrosting system and control system；The refrigeration system includes compressor, oil eliminator, air-cooled condenser, device for drying and filtering, heating power expansion valve, finned-tube evaporator and gas-liquid separator；The defrosting system includes water storage box, water pump and spray equipment；Water storage box water outlet connects the supply line for setting gradually water pump and the first solenoid valve, spray equipment is installed in supply line end, and the water-collecting tray positioned at bottom in finned-tube evaporator is sequentially connected double-tube heat exchanger, check valve, the serpentine coil being around on the outside of oil eliminator and water storage box water inlet by pipeline.The present invention is not necessarily to additional defrosting heat source and defrosting water, the efficient utilization of condensation heat and oil eliminator waste heat and the purpose for recycling feasible system energy-saving and water-saving of defrosting water.
Description
Technical field
The present invention relates to cryogenic refrigeration, freezing and refrigeration and field of heating ventilation air conditioning, more specifically, being related to a kind of heat pump system
UTILIZATION OF VESIDUAL HEAT IN and the efficient defrosting integrated system of evaporator.
Background technique
Evaporator is as one of the necessaries in refrigeration system, the excellent fortune for being related to whole system of heat exchange property
Line efficiency.The evaporator easily frosting of air-conditioning system or cryogenic freezing refrigerating system under winter low temperature operating condition, especially
It is the Food Freezing and Cold Storage environment of high humidity environment, and evaporimeter frosting is even more serious, and the generation of frost layer increases heat transfer resistance, is made
The heat exchange property of evaporator significantly reduces, therefore realizes that the frostless environment of evaporator or the highly effective defrosting of heat exchanger are made for improving
Cooling system efficiency reduces system energy consumption and is of great significance.Defrost method common at present has hot gas bypass defrosting, hot fluorine to remove
Frost, electric heated defrosting, mechanical defrosting and hot water defrosting etc., however every kind of method has its pros and cons, hot gas bypass defrosting is to being
The stable operation of system is unfavorable, and the hot fluorine defrosting of four-way commutation type can significantly improve cold temperature, and electric heating and hot water defrosting need volume
Outer heat source, the mechanical technique that defrosts are relative complex.This patent for conventional hot water defrosting needed for extra heat source drawback into
It has gone innovative optimization, has not only solved heat source, reduced system entirety energy consumption, and by more than effective use system
Heat increases substantially the efficiency of system.The common UTILIZATION OF VESIDUAL HEAT IN of refrigeration system be concentrated mainly on to compressor case waste heat and
The utilization of condensation heat, the innovation of this patent are defrosting water to the step benefit of condenser ends pipeline and oil eliminator heat
With can not only effectively improve degree of supercooling, reduce compressor exhaust temperature, and realize recycling for defrosting water, for drop
Low units consumption and saving water resource are of great significance.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of existing hot water defrosting technology, solve the problems, such as to melt caused by heat source of hot water
Frost level energy consumption problem provides a kind of energy-saving hot-water spray defrosting system.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of energy-saving and water-saving type heat water-spraying removes defrosting system, is made of refrigeration system, defrosting system and control system；
The refrigeration system includes compressor, oil eliminator, air-cooled condenser, device for drying and filtering, heating power expansion valve, fin
Pipe evaporator and gas-liquid separator；Compressor outlet is sequentially connected the serpentine coil being around on the outside of oil eliminator, wind by pipeline
Cool condenser, double-tube heat exchanger, device for drying and filtering, heating power expansion valve, finned-tube evaporator and gas-liquid separator, gas-liquid separator
Connect compressor entrance；
The defrosting system includes water storage box, water pump and spray equipment；Water storage box water outlet connection set gradually water pump and
Spray equipment is installed in the supply line of first solenoid valve, supply line end, and the spray equipment is located in finned-tube evaporator；
The water-collecting tray of bottom by pipeline is sequentially connected double-tube heat exchanger, check valve, is around in finned-tube evaporator
Serpentine coil and water storage box water inlet on the outside of oil eliminator, water storage box top are equipped with safety valve；Arrangement temperature passes in water storage box
Sensor and liquidometer；The water supply branch one of second solenoid valve is connected with positioned at the supply line of water pump and the first solenoid valve
End, the connection of the water supply branch other end are around in the serpentine coil on the outside of oil eliminator；
The control system is separately connected compressor, heating power expansion valve, water pump, the first solenoid valve, second solenoid valve, safety
Valve, temperature sensor and liquidometer.
The spray equipment is spray head.It is surrounded on the outside of the water tank with polyurethane heat insulation material.
The present invention has the advantages that：
1. the degree of supercooling of refrigeration system increases, coefficient of refrigerating performance is improved, and units consumption reduces.
2. the oil return efficiency of oil eliminator improves, the heat exchange property of heat exchanger is improved；Furthermore the UTILIZATION OF VESIDUAL HEAT IN of high-temperature exhaust air
The design area that condenser can be reduced, reduces cost.
3. the purpose for recycling achievable energy-saving and water-saving without additional defrosting heat source and defrosting water.
Detailed description of the invention
Fig. 1 energy-saving hot-water spray defrosting systematic schematic diagram；
Fig. 2 refrigeration system recycles pressure-enthalpy chart.
Specific embodiment
The invention will be further described with reference to the accompanying drawing：
As shown in Figure 1, a kind of energy-saving and water-saving type heat water-spraying removes defrosting system based on refrigeration system, more than refrigeration system
Hot efficiently step is utilized as technological means, realizes that performance of refrigerant systems optimization, energy-efficient defrosting and saving water resource etc. are beneficial
Effect.
A kind of energy-saving and water-saving type heat water-spraying based on refrigeration system removes defrosting system, including finned-tube evaporator 1, heating power are swollen
Swollen valve 2, device for drying and filtering 3, the first solenoid valve 4, second solenoid valve 5, water pump 6, safety valve 7, insulation water storage box 8, air-cooled condensation
Device 9, double-tube heat exchanger 10, check valve 11, serpentine coil 12, oil eliminator 13, compressor 14, gas-liquid separator 15, water-collecting tray
16, spray head 17 and control system etc..Under normal refrigeration mode, refrigeration system is in starting state, and the first solenoid valve 4 closes at this time
It closes, second solenoid valve 5 is opened.Temperature is up to 60 DEG C after compression for refrigerant (by taking R134a as an example), when through oil eliminator 13, leads to
It crosses the heat dissipation of serpentine coil 12 and gives defrosting water, then radiate again via air-cooled condenser 9, saturated liquid refrigerant is normal at this time
Temperature, it is further cooling by the defrosting water of low temperature by double-tube heat exchanger 10, evaporator fin 1 is entered after expansion throttling cools down
Cold heat is absorbed, the refrigerant after heat absorption is again introduced into compressor compresses through gas-liquid separator 15 in the form of saturated vapor, from
And complete entire refrigeration cycle.
When cold control temperature is higher, finned-tube evaporator 1 generally will not frosting, but can constantly form condensed water,
Cold humidity is higher under normal conditions, then the quality for forming condensed water is bigger.Low temperature cold condensate (0-10 DEG C) is received by water-collecting tray 16
After collection under gravity or pumping action 10 absorption condensation waste heat of sleeve pipe heat exchanger, then enter back into serpentine coil 12 absorb high temperature
Exhaust heat, under the traction of water pump enter insulation water storage box 8 store.Based on intelligence control system, when water tank temperature is lower than
At 50 DEG C, water circulating pump 6 is opened, and the water in water tank is made to absorb the high-temperature exhaust air in oil eliminator 13 again by serpentine coil 12
Waste heat, when water tank temperature is higher than 55 DEG C, then water pump 6 is out of service.Due to evaporator not frosting, refrigeration system under the operating condition
Always in operating status, then cause water in water storage box 8 to be increasing, extra hot water can be discharged by safety valve 7, it is also possible to
In the supply of other domestic waters.
When cold control temperature is lower, the meeting of finned-tube evaporator 1 gradually frosting works as frost layer to improve refrigeration performance
Enter defrosting mode when reaching certain thickness.In defrost mode, refrigeration system shuts down, and the first solenoid valve 4 is opened, the
Two solenoid valves 5 are closed, and under the traction of water pump 6, the hot water in water storage box 8 is sprayed to finned-tube evaporator 1 by spray head 17, frost
Layer melts rapidly under high-temperature water effect to be water at low temperature (0-10 DEG C) and is stored in water-collecting tray 16, after defrosting, refrigeration
System restarting, the first solenoid valve 4 are closed, and second solenoid valve 5 is opened.Based on intelligence control system, water collector is opened at this time
Drain valve, so that the successive sleeve pipe heat exchanger 10 of the defrosting water of low temperature and serpentine coil 12 is carried out the step benefit of equipment waste heat
With, then enter water storage box 8 store, so as to next time defrosting when recycle the purpose, it can be achieved that defrosting system energy-saving and water-saving.
Refrigeration system cycle performance is analyzed, as shown in Fig. 2, 1-2 is compression process, 2-3 is the cold of exhaust process
But process, 3-4 are the pressure drop in exhaust pipe, and 4-5 is condensation process, and 5-6 is throttling process, and 6-1 is evaporation process.System
Specific refrigerating effect is h1-h6, unit work consumptiom h2-h1, coefficient of refrigerating performance ε=(h1-h6)/(h2-h1).On former refrigeration system basis
On, the energy-saving hot-water spray of exploitation removes defrosting system, system performance can be advanced optimized, since the heat exchange of serpentine coil 12 improves
It is vented cooling capacity, temperature drop and pressure drop increase, therefore the temperature value of point 3 ' is lower than the temperature of point 3, the pressure and temperature of point 4 '
A little 4 are below, so that the practical condensation temperature of system be made to decrease.Due to the effect of double-tube heat exchanger, cause condensed
Liquid is subcooled, therefore the temperature of point 5 ' and pressure value will be significantly lower than points 5, then the system unit refrigerating capacity after optimizing be
h1-h6’, it is higher than h1-h6, in the case where unit work consumptiom is constant, coefficient of refrigerating performance can increase.
Claims (1)
1. a kind of energy-saving and water-saving type heat water-spraying removes defrosting system, which is characterized in that by refrigeration system, defrosting system and control system
It constitutes；
The refrigeration system includes compressor, oil eliminator, air-cooled condenser, device for drying and filtering, heating power expansion valve, finned tube steaming
Send out device and gas-liquid separator；Compressor outlet is sequentially connected the serpentine coil being around on the outside of oil eliminator, air-cooled cold by pipeline
Condenser, double-tube heat exchanger, device for drying and filtering, heating power expansion valve, finned-tube evaporator and gas-liquid separator, gas-liquid separator connection
Suction port of compressor；
The defrosting system includes water storage box, water pump and spray equipment；The connection of water storage box water outlet sets gradually water pump and first
Spray equipment is installed in the supply line of solenoid valve, supply line end, and the spray equipment is located in finned-tube evaporator；
The water-collecting tray of bottom by pipeline is sequentially connected double-tube heat exchanger, check valve, is around in oil in finned-tube evaporator
From the serpentine coil and water storage box water inlet on the outside of device, water storage box top is equipped with safety valve；Temperature sensor is arranged in water storage box
And liquidometer；It is connected with water supply branch one end of second solenoid valve positioned at the supply line of water pump and the first solenoid valve, gives
The connection of the water branch other end is around in the serpentine coil on the outside of oil eliminator；
The control system be separately connected compressor, heating power expansion valve, water pump, the first solenoid valve, second solenoid valve, safety valve,
Temperature sensor and liquidometer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810977481.XA CN108844265A (en) | 2018-08-27 | 2018-08-27 | A kind of energy-saving and water-saving type heat water-spraying removes defrosting system |
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| CN201810977481.XA CN108844265A (en) | 2018-08-27 | 2018-08-27 | A kind of energy-saving and water-saving type heat water-spraying removes defrosting system |
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| CN108844265A true CN108844265A (en) | 2018-11-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623561A (en) * | 2019-02-27 | 2020-09-04 | 青岛海尔滚筒洗衣机有限公司 | Heat pump type clothes dryer heat pump system cooling method and heat pump type clothes dryer |
| CN112524850A (en) * | 2020-12-08 | 2021-03-19 | 浙江山鹰制冷科技有限公司 | Refrigeration plant defrosting mechanism |
| WO2021245791A1 (en) * | 2020-06-02 | 2021-12-09 | 三菱電機株式会社 | Cooling device |
| CN114659377A (en) * | 2022-05-26 | 2022-06-24 | 苏州奥德高端装备股份有限公司 | Gas condensation recovery system and control method |
| CN115773586A (en) * | 2022-12-12 | 2023-03-10 | 青岛理工大学 | Multi-point source heat recovery defrosting system and method of cascade air source heat pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623561A (en) * | 2019-02-27 | 2020-09-04 | 青岛海尔滚筒洗衣机有限公司 | Heat pump type clothes dryer heat pump system cooling method and heat pump type clothes dryer |
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| CN114659377A (en) * | 2022-05-26 | 2022-06-24 | 苏州奥德高端装备股份有限公司 | Gas condensation recovery system and control method |
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| CN115773586A (en) * | 2022-12-12 | 2023-03-10 | 青岛理工大学 | Multi-point source heat recovery defrosting system and method of cascade air source heat pump |
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