CN204313554U - Energy-saving rapid frost melting device - Google Patents
Energy-saving rapid frost melting device Download PDFInfo
- Publication number
- CN204313554U CN204313554U CN201420767179.9U CN201420767179U CN204313554U CN 204313554 U CN204313554 U CN 204313554U CN 201420767179 U CN201420767179 U CN 201420767179U CN 204313554 U CN204313554 U CN 204313554U
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- China
- Prior art keywords
- defrosting
- energy
- evaporimeter
- air
- high pressure
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The utility model relates to a kind of energy-saving rapid frost melting device, and this device comprises a set of gases at high pressure bypass assembly and a set of defrosting compressor bank, and gases at high pressure bypass assembly and defrosting compressor bank are in parallel with the high-pressure side of refrigeration system and evaporimeter respectively.The problems such as defrost time caused in refrigeration, heating air conditioning unit defrosting process is long, vaporizer side temperature fluctuation is large, energy consumption is high can be solved.Compared with prior art, the utility model is energy-conservation, defrosting speed is fast, temperature fluctuation is little, have very important significance to solution haze problem.
Description
Technical field
The utility model relates to technical field of heat exchange, particularly relates to a kind of saturation properties of cold-producing medium that utilizes and makes the rapid frost melting device that the evaporimeter defrost time of refrigerated air-conditioning system is short, vaporizer side temperature fluctuation is little, energy consumption is low.
Background technology
We know, because frost layer thermal conductivity factor is very low, thermal resistance is very large, after evaporimeter frosting, if can not be removed in time, the energy consumption of refrigeration system at least increases by 10 ~ 15%, the power consumption of refrigeration system accounts for about 75% of freezer enterprise total power consumption, therefore, after refrigeration system evaporator frosting, rational defrosting mode is very important.
Equally, for Air-source Heat Pump air-conditioning system, especially in northern area, China Yangtze river basin, winter environment humidity is relatively large, it is even more serious that evaporimeter coagulates white phenomenon, cause the fluctuation of water temperature in winter or indoor temperature large, not only affect heating effect, and cause meaningless loss and the waste of the energy.
Just current, the defrosting mode of refrigeration system roughly has manually sweeps frost, electrical heating defrosting, compressor air-discharging defrosting, gases at high pressure defrosting and highly pressurised liquid defrosting five kinds of defrosting modes.
Coil heat exchanger is manually to sweep the mode of frost, and the subject matter that this Defrost mode exists sweeps frost not in time, and the frost layer at coiled pipe evaporimeter top cannot be removed.
The defrosting mode of air-cooler mainly adopts electrical heating defrosting mode, electrical heating heating efficiency is very low, therefore configured electric heater capacity is generally 6 ~ 10 times of power of fan, and this defrosting mode not only causes investment cost to increase, and in defrosting process, energy consumption increase, storehouse temperature fluctuate very large.
The subject matter of compressor air-discharging defrosting is that the evaporimeter that configures of same refrigeration system can not defrosting simultaneously, and for the lower refrigeration system of evaporating temperature, the suction tolerance of compressor is very little, and defrost time is very long, directly causes energy consumption increase in defrosting process, the fluctuation of storehouse temperature greatly.
Gases at high pressure defrosting connects a high-pressure gas pipeline to evaporimeter from condenser overhead, controlled by magnetic valve or stop valve, when evaporimeter defrosting, compressor shutdown, then open the pressure balance that defrosting magnetic valve or stop valve make it condenser and evaporimeter, thus reach the object of defrosting, in fact, the pressure of this defrosting mode high-low pressure balance only has 0.5 ~ 0.7MPa, corresponding saturation temperature 8 ~ 12 DEG C, especially the refrigeration system that evaporating temperature is lower is differed less with the temperature difference in cooled space, gases at high pressure progressively condenser become highly pressurised liquid, equalizing pressure is caused progressively to reduce, defrost time is long, and defrosting is not thorough.
Highly pressurised liquid defrosting is directly supplied in evaporimeter by defrosting stop valve or magnetic valve by the highly pressurised liquid in high pressure receiver, and the pressure balance making it condenser and evaporimeter reaches the object of defrosting, therefore, this defrosting mode and gases at high pressure defrosting difference are, gases at high pressure defrosting mode makes high-low pressure pressure balance reach the object of defrosting by gas, highly pressurised liquid defrosting mode makes high-low pressure pressure balance reach the object of defrosting by liquid, its principle is consistent, therefore, this defrosting mode has the defect of gases at high pressure defrosting equally, and this defrosting mode needs the jumbo low pressure recycle liquid receiver of configuration one, make it to be enough to hold the refrigerant liquid in lower evaporimeter, in order to avoid compressor produces wet stroke.
For in Air-source Heat Pump air-conditioner set heating process in the winter time, compressor air-discharging defrosting mode carries out defrosting to finned heat exchanger, and its defect is consistent with compressor air-discharging defrosting mode, and for saving length, this does not repeat.
In sum, certain urgently a kind of new technology that can thoroughly solve the problems of the technologies described above, fundamentally solve defrosting existing in refrigerated air-conditioning system defrosting process not in time, the series of technical such as not thorough, thus the energy consumption reduced in defrosting process, the problems such as the temperature fluctuation in solution defrosting process is large, this, for raising refrigerating efficiency, guarantees the service life of compressor, delays climate warming and have very important significance.
Summary of the invention
The purpose of this utility model is the aforementioned technical problem solving prior art existence, a kind of energy-saving rapid frost melting device is provided, after this device adopts high-low pressure balance, then higher pressure refrigerant gas is filled to evaporimeter, pressure in evaporimeter is reached be enough to the temperature making its frost layer fast-falling, thus solve the problems such as defrost time caused in refrigeration, heating air conditioning unit defrosting process is long, vaporizer side temperature fluctuation is large, energy consumption is high.
In order to realize above-mentioned utility model object, disclosed in the utility model, technical scheme is: this energy-saving rapid frost melting device, comprise a set of gases at high pressure bypass assembly and a set of defrosting compressor bank, gases at high pressure bypass assembly 10 and defrosting compressor bank 20 are in parallel with the high-pressure side of refrigeration system and evaporimeter 302 respectively.
Further, described gases at high pressure bypass assembly is made up of air inlet pipeline 101, valve 102, outlet pipe 103, wherein the high-pressure side condenser 305 of air inlet pipeline 101 and refrigerated air-conditioning system or high pressure receiver 306 or high-pressure gas pipeline are connected, and outlet pipe 103 is connected with the evaporimeter 302 of refrigerated air-conditioning system.
Further, described defrosting compressor bank 20 comprises: small-sized defrosting compressor 201, gas-liquid separator 202, oil eliminator 203, admission air valve 204, drain tap 205, suction line 206, gas exhaust piping 207, an oil return pipe 208, wherein gas exhaust piping 207 is connected with the evaporimeter 302 of refrigerated air-conditioning system, and suction line 206 is connected with the drain pipe of the condenser 305 of refrigerated air-conditioning system.
Further, when evaporimeter is air-cooler, defrosting heat exchanger tube can be set in the drip tray of air-cooler, utilize this defrosting device to heat to the defrosting water come off at drip tray simultaneously, solve drip tray defrosting water freezing problem.
Further, described valve 102, admission air valve 204, drain tap 205 are magnetic valve.When adopting the automatic valves such as magnetic valve, automatic defrosting can be realized by electric programme-control.
The utility model also relates to the application of this energy-saving rapid frost melting device in refrigerating field, field of air conditioning, heating field.Adopt this defrosting device for during Air-Cooled Heat Pump Unit winter heating, not only effectively can solve the problem of air-conditioning fluctuations in indoor temperature, and solve because water pond freezes, and the finned heat exchanger caused is near water pond place ice formation issues.
operation principle of the present utility model is: when refrigeration system meets defrosting condition, quit work for the main compressor of circularly cooling and the blower fan of evaporimeter, close the refrigeration valve in evaporimeter return line, open the valve on defrosting device bypass line, at this moment refrigeration system high pressure gas enters evaporimeter by this defrosting device bypass line, and achieve the high-low pressure balance of refrigeration system at short notice, then close the valve on defrosting device bypass line, after opening the valve on defrosting compressor bank suction and discharge pipeline, start the mini-type refrigeration compressor being used for defrosting, at this moment defrosting compressor sucks refrigerant gas from high-pressure side, the refrigerant gas being compressed into high pressure superheater by consuming electric energy drains into evaporimeter, and at short notice the pressure in evaporimeter is increased to more than 1.0MPa, corresponding condensation temperature is more than 30 DEG C, at this moment the frost layer on evaporimeter is melted very soon, after bilayer thawing on evaporimeter comes off, stop defrosting compressor operating, and the valve of simultaneously closing on defrosting compressor suction and discharge pipeline, defrosting terminates.
Other side of the present utility model and feature and advantage thereof, by below by reference to the accompanying drawings in specific embodiment carry out specifically introduction by way of example in the description.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model gases at high pressure bypass assembly.
Fig. 2 is the structural representation of the utility model defrosting compressor bank.
Fig. 3 is the fundamental diagram that the utility model is connected with refrigeration system.
Detailed description of the invention
Below in conjunction with accompanying drawing, to illustrate but not the mode of restriction for the protection domain required by utility model thought, the example describing better embodiment of the present utility model in detail and change to some extent.
Fig. 1 is the gases at high pressure bypass component operation principle schematic as energy-saving fast unit defrosting of the present utility model.Gases at high pressure bypass assembly 10 mainly comprises: air inlet pipeline 101, valve 102, outlet pipe 103.
Fig. 2 is the defrosting compressor bank operation principle schematic diagram as the energy-saving fast unit defrosting of the utility model.Defrosting compressor bank 20 mainly comprises: defrosting compressor (201), gas-liquid separator 202, oil eliminator 203, admission air valve 204, drain tap 205, suction line 206, gas exhaust piping 207, oil return pipe 208.
Fig. 3 be energy-saving rapid frost melting device with the fundamental diagram of refrigeration system connected mode.Comprise: gases at high pressure bypass assembly 10, defrosting compressor bank 20.
Below in conjunction with accompanying drawing 3, by the embodiment of energy-saving rapid frost melting device, illustrate the operation principle applying above-mentioned energy-saving rapid frost melting device.
When evaporimeter 302 frosting needs defrosting to certain thickness, refrigeration compressor 301 is out of service, at this moment the valve 303 on evaporimeter 302 liquid feeding pipeline and the valve 304 in return line is closed, then open the valve 102 on gases at high pressure bypass assembly 10, then condenser 305, gases at high pressure in high pressure receiver 306 are by the air inlet pipeline 101 of gases at high pressure bypass assembly 10, valve 102 and outlet pipe 103 enter evaporimeter 302, and make evaporimeter 302 and condenser 305 very soon, pressure in high pressure receiver 306 reaches balance, pressure in pressure balance finisher is about 0.5 ~ 0.7 MPa, temperature in evaporimeter is about 8 ~ 12 DEG C, then open the suction line valve 204 in defrosting compressor bank 20, gas exhaust piping valve 205, start defrosting compressor 201, at this moment defrosting compressor 210 sucks 0.5 ~ 0.7 MPa refrigerant air-liquid two-phase mixture by suction line 206 from the pressure duct between condenser 305 to high pressure receiver 306, liquid in the refrigerant air-liquid two-phase mixture that gas-liquid separator 202 is sucked is separated, then gas is sucked by defrosting compressor 201, by consume electric energy by its be compressed into high-pressure refrigeration device gas, enter oil eliminator 203 to be separated with defrosting compressor 201 vent strip lubricating oil out, the lubricating oil separated enters gas-liquid separator 202 through return line 208, return defrosting compressor 201 continuously, gases at high pressure then enter in evaporimeter 302 through gas exhaust piping 207, when the pressure in evaporimeter 302 reaches 1.0 ~ 1.3MPa, stop defrosting compressor operating, valve-off 204 simultaneously, 205, the temperature of evaporimeter 302 inner refrigerant is about 30 ~ 35 DEG C, the frost layer be then attached on evaporimeter 302 surface is naturally melted and is come off, defrosting terminates.
As can be seen here, this energy-saving rapid frost melting device has following significant advantage.
1, energy-conservation.Energy-saving rapid frost melting device just make use of the function that defrosting compressor 201 pairs of gases compress, the pressure in the evaporimeter 302 after being balanced by high-low pressure by the compressor 201 of energy-saving rapid frost melting device is only needed to bring up to 1.0 ~ 1.3MPa by 0.5 ~ 0.7MPa in defrosting process, boost in pressure amplitude is very little, the high pressure gas scale of construction needed is also very little, therefore, the power of defrosting compressor is very little, be only about 5% of electrical heating defrosting or cold-producing medium hot gas defrosting energy consumption, energy-saving effect highly significant.
2, defrosting speed is fast.The high-low pressure that gases at high pressure bypass assembly just can reach between evaporimeter 302 and condenser 305, high pressure receiver 306 within the several seconds balances, because after high-low pressure balance, the temperature of its inside has reached 8 DEG C, under these conditions, the frost layer of evaporimeter 302 has started to loosen, the time that defrosting compressor only needs work very short, just the pressure in evaporimeter 302 can be increased to 1.0 ~ 1.3MPa, the temperature in evaporimeter 302 is made to reach more than 30 DEG C, therefore, in whole defrosting process, the time is very short.
3, temperature fluctuation is little.Traditional electrical heating defrosting, cold-producing medium hot gas defrosting, defrosting terminates the problem of finisher usually at 50 DEG C, and defrost time is very long, cause vaporizer side temperature fluctuation very large, for refrigeration system, directly affect quality and the fresh keeping time of foodstuff storing, for air-conditioner set, the comfort level that directly impact is indoor, and violent temperature fluctuation, also directly results in the increase of the energy consumption in Working Procedure Pf The Refigerating Compressor.
4, solution haze problem is had very important significance.Because the current supply of electric power of China is still based on thermoelectricity, therefore, the consumption reducing electric power energy also produces active influence to solution haze problem indirectly.
Claims (6)
1. an energy-saving rapid frost melting device, comprise gases at high pressure bypass assembly (10) and defrosting compressor bank (20), it is characterized in that: gases at high pressure bypass assembly (10) and defrosting compressor bank (20) are connected with the high pressure gas side of refrigeration system and evaporimeter (302) respectively.
2. the energy-saving rapid frost melting device of one according to claim 1, it is characterized in that described gases at high pressure bypass assembly is made up of air inlet pipeline (101), valve (102), outlet pipe (103), wherein the high-pressure side condenser (305) of air inlet pipeline (101) and refrigerated air-conditioning system or high pressure receiver (306) or high-pressure gas pipeline are connected, and outlet pipe (103) is connected with the evaporimeter (302) of refrigerated air-conditioning system.
3. the energy-saving rapid frost melting device of one according to claim 1, it is characterized in that described defrosting compressor bank (20) comprising: defrosting compressor (201), gas-liquid separator (202), oil eliminator (203), admission air valve (204), drain tap (205), suction line (206), gas exhaust piping (207), oil return pipe (208), wherein gas exhaust piping (207) is connected with the evaporimeter (302) of refrigerated air-conditioning system, and suction line (206) is connected with the drain pipe of the condenser (305) of refrigerated air-conditioning system.
4. the energy-saving rapid frost melting device of one according to claim 1, is characterized in that, when evaporimeter is air-cooler, arranging defrosting heat exchanger tube in the drip tray of air-cooler.
5. the energy-saving rapid frost melting device of one according to claim 2, is characterized in that described valve (102) is magnetic valve.
6. the energy-saving rapid frost melting device of one according to claim 3, is characterized in that described admission air valve (204), drain tap (205) is magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420767179.9U CN204313554U (en) | 2014-09-30 | 2014-12-09 | Energy-saving rapid frost melting device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516962 | 2014-09-30 | ||
| CN2014105169622 | 2014-09-30 | ||
| CN201420767179.9U CN204313554U (en) | 2014-09-30 | 2014-12-09 | Energy-saving rapid frost melting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204313554U true CN204313554U (en) | 2015-05-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420767179.9U Expired - Fee Related CN204313554U (en) | 2014-09-30 | 2014-12-09 | Energy-saving rapid frost melting device |
| CN201410744099.6A Expired - Fee Related CN104457067B (en) | 2014-09-30 | 2014-12-09 | Energy-saving quick defroster |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410744099.6A Expired - Fee Related CN104457067B (en) | 2014-09-30 | 2014-12-09 | Energy-saving quick defroster |
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| Country | Link |
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| CN (2) | CN204313554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457067A (en) * | 2014-09-30 | 2015-03-25 | 烟台万德嘉空调设备有限公司 | Energy-saving quick defroster |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157268B (en) * | 2015-08-25 | 2017-05-31 | 吴家伟 | A kind of CO with hot gas defrosting2Cascade refrigeration system |
| CN106152344A (en) * | 2016-07-11 | 2016-11-23 | 刘玉岭 | Air-conditioning heating unit and heat-production control method thereof |
| CN107036349A (en) * | 2017-06-10 | 2017-08-11 | 烟台大学 | A kind of heat pump type air conditioning system based on compressor air-discharging bypass defrosting |
| CN109282430B (en) * | 2018-10-09 | 2020-04-07 | 珠海格力电器股份有限公司 | Method for detecting and controlling defrosting of air conditioner |
| CN113669844A (en) * | 2021-08-30 | 2021-11-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112557C (en) * | 1997-11-12 | 2003-06-25 | 廖振瑞 | Quick defrosting device for freezer |
| CN1804516A (en) * | 2005-01-10 | 2006-07-19 | 颜世峰 | Heating circulation system of air energy heat pump |
| EP2347196A1 (en) * | 2008-11-11 | 2011-07-27 | Carrier Corporation | Heat pump system and method of operating |
| CN102564014A (en) * | 2011-01-04 | 2012-07-11 | 梅宝军 | Defroster of refrigerator |
| CN104024752B (en) * | 2011-12-12 | 2017-06-23 | 三菱电机株式会社 | Outdoor unit and conditioner |
| CN103123191B (en) * | 2013-01-29 | 2016-09-07 | 依科瑞德（北京）能源科技有限公司 | A kind of hot pump in low temp system |
| CN204313554U (en) * | 2014-09-30 | 2015-05-06 | 烟台万德嘉空调设备有限公司 | Energy-saving rapid frost melting device |
-
2014
- 2014-12-09 CN CN201420767179.9U patent/CN204313554U/en not_active Expired - Fee Related
- 2014-12-09 CN CN201410744099.6A patent/CN104457067B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457067A (en) * | 2014-09-30 | 2015-03-25 | 烟台万德嘉空调设备有限公司 | Energy-saving quick defroster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104457067B (en) | 2017-04-19 |
| CN104457067A (en) | 2015-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171209 |