CN102997567B - Pressure differential defrosting device of evaporator in air cooler of refrigerated storage - Google Patents
Pressure differential defrosting device of evaporator in air cooler of refrigerated storage Download PDFInfo
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- CN102997567B CN102997567B CN201210530047.XA CN201210530047A CN102997567B CN 102997567 B CN102997567 B CN 102997567B CN 201210530047 A CN201210530047 A CN 201210530047A CN 102997567 B CN102997567 B CN 102997567B
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- defrosting
- cooler
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- 238000010257 thawing Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000005485 electric heating Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 235000012055 fruits and vegetables Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- Defrosting Systems (AREA)
Abstract
本发明公开了一种冷藏库冷风机内蒸发器压差式除霜装置，其技术方案是：冷风机的两侧分别设有左、右静压箱，两个静压箱分别设有压差风机，两个压差风机通过各自的循环风道分别接于冷风机左下和右上端的出风口。在蒸发器的左下及右上端分别设置电加热器。两个静压箱与冷风机之间的出风口、冷风机上、下端、送风风机的进回风口均设有电动风阀。本装置将压差风机、静压箱与电加热装置进行优化组合，通过热空气直接与蒸发器表面霜层接触融霜，有效缩短除霜时间。被加热的空气仅在冷风机内的蒸发器四周以及静压箱内流动循环除霜，提高除霜能源利用效率，同时不会产生冷藏库除霜库温波动，所设置的多个风口和电动风阀有效解决了除霜死角问题。
The invention discloses a pressure-difference type defrosting device for an evaporator in a cold air fan in a refrigerator. The technical proposal is that left and right static pressure boxes are respectively arranged on both sides of the air cooler, and the two static pressure boxes are respectively provided with a pressure difference Fan, two differential pressure fans are respectively connected to the air outlets at the lower left and upper right ends of the cooling fan through their respective circulating air ducts. Electric heaters are respectively arranged at the lower left and upper right ends of the evaporator. The air outlet between the two static pressure boxes and the cooling fan, the upper and lower ends of the cooling fan, and the inlet and outlet of the air supply fan are all equipped with electric air valves. This device optimizes the combination of pressure difference fan, static pressure box and electric heating device, and defrosts through hot air directly contacting the frost layer on the surface of the evaporator, effectively shortening the defrosting time. The heated air only flows and circulates around the evaporator in the air cooler and in the static pressure box to improve the energy efficiency of defrosting, and at the same time, there will be no temperature fluctuations in the defrosting of the refrigerator. The multiple air outlets and electric The air valve effectively solves the problem of defrosting dead angle.
Description
Technical field
The invention belongs to refrigeration and deepfreeze technology, be specifically related to a kind of to device that in freezer air-cooler, evaporimeter defrosts.
Background technology
Society people are more and more higher for the requirement of fresh fruit of vegetables quantity and quality, and freezer is the capital equipment of preserving after fruit and vegetable picking.At present, cooling device between fruit and vegetable refrigerating adopts the form of air-cooler mostly, storage is except requiring low temperature, in order to reduce by the drying loss of refrigeration agricultural byproducts, also require freezer to keep a relatively high air humidity, but the operating mode that the environment of this " low temperature and high relative humidity " by chance makes evaporimeter in freezer air-cooler be in easier frosting is moved.To make that heat exchange thermal resistance increases, Efficiency Decreasing after evaporimeter frosting, make thus that refrigeration system COP reduces, fan energy consumption increase etc.Therefore, timely and effectively evaporimeter is defrosted, extremely important for the economical operation of freezer.Defrost and mostly adopt electrically heated mode for the evaporimeter in air-cooler at present, but the method has the shortcomings such as defrosting energy consumption is large, the time is long, efficiency is low, and in defrost process, easily the temperature of setting in freezer is caused to larger fluctuation, thereby affect agricultural byproducts storage quality.If a kind of efficient, energy-conservation, evaporator defrost device efficiently can be provided, will be the required of the industry.
Summary of the invention
The object of the invention is to, provide a kind of utilize that principle of differential pressure combines with electric-heating technology to the device that in freezer air-cooler, evaporimeter defrosts, to solve in evaporator defrost process, the problem such as defrosting efficiency is low, the time is long, storehouse temperature fluctuation is large.
Referring to accompanying drawing, technical scheme of the present invention and system architecture are described.In freezer air-cooler, the differential defroster of evaporimeter has: air-cooler, plenum chamber, pressure reduction blower fan, circulation air path, electric heater, Electric air valve and drip tray, air-cooler mainly comprises: evaporimeter, breeze fan etc.Its technical scheme is: the both sides of air-cooler are respectively equipped with left plenum chamber and right plenum chamber, be respectively equipped with pressure reduction blower fan at the downside of left plenum chamber and the upside of right plenum chamber, two pressure reduction blower fans are connected to respectively the air outlet of air-cooler lower-left end and upper right side by circulation air path separately.At the lower-left of evaporimeter end and upper right side, electric heater is set respectively.Air outlet between left and right two plenum chambers and air-cooler is respectively equipped with the first and second Electric air valves; Be respectively equipped with the third and fourth Electric air valve at the air outlet of air-cooler lower-left end and upper right side; The return air inlet of breeze fan and air outlet are respectively equipped with the 5th and the 6th Electric air valve.
Air-cooler is cooling device in the storehouse that adopts, fruit and vegetable refrigerating storehouse, and air-cooler generally comprises the motor of breeze fan, evaporimeter and drive blower fan etc., and it is different from refrigeration unit, so do not comprise the equipment such as condenser, compressor.
The beneficial effect of feature of the present invention and generation is:
(1) use of combining of pressure reduction blower fan, plenum chamber and electric heater unit, directly contacts defrosting with evaporator surface frost layer by hot-air, effectively shortens defrosting time.
(2) heat that electrical heating produces is all directly used in defrosting, heat is not lost in surrounding environment, avoid in the time that defrosting finishes, needed extra cold to eliminate this part heat because cold store temperature raises, can save the energy from two aspects thus, improve defrosting energy utilization rate.
(3) air heating by electric heater only circulates in evaporimeter surrounding and plenum chamber in air-cooler, is lost in refrigerating space and the storehouse temperature fluctuation problem causing like this guarantee food storage quality by subduing when defrosting hot-air.
(4) by evaporimeter upper right side and lower left electric heater and upper right and lower-left end distribution air outlet at air-cooler are set respectively, can effectively solve defrosting Dead Core Problems.
Brief description of the drawings
Fig. 1 is operation principle of the present invention and system construction drawing.
Fig. 2 is the system architecture sketch that Fig. 1 overlooks direction.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, structural principle of the present invention is described further.
The differential defroster of evaporimeter in freezer air-cooler, its system composition and structure are: the both sides of air-cooler 1 are respectively equipped with left plenum chamber 3 and right plenum chamber 4, be respectively equipped with 5, two pressure reduction blower fans of pressure reduction blower fan and be connected to respectively by circulation air path separately the air outlet of air-cooler lower-left end and upper right side at the downside of left plenum chamber and the upside of right plenum chamber.At the lower-left of evaporimeter 2 end and upper right side, electric heater 6 is set respectively.Air outlet between left and right two plenum chambers and air-cooler is respectively equipped with the first and second Electric air valve 7-1,7-2; Be respectively equipped with the third and fourth Electric air valve 7-3,7-4 at the air outlet of air-cooler lower-left end and upper right side; The return air inlet of breeze fan 9 and air outlet are respectively equipped with the 5th and the 6th Electric air valve 7-5,7-6.In air-cooler, the bottom of evaporimeter is provided with drip tray 8.
Under defrosting mode: first, second, third and the 4th Electric air valve open; The the 5th and the 6th Electric air valve is closed.Under non-defrosting mode: first, second, third and the 4th Electric air valve close; The the 5th and the 6th Electric air valve is opened.
The differential defroster of freezer evaporimeter is divided into two kinds of defrosting mode and non-defrosting modes according to evaporimeter frosting situation.
Operation principle and the process of the present embodiment are: when evaporator defrost, between left and right two plenum chambers and air-cooler, two Electric air valves of two Electric air valves of air outlet and air-cooler lower-left end and upper right side air outlet are opened; Breeze fan quits work, and the Electric air valve at breeze fan air outlet and return air inlet place is closed simultaneously; Two pressure reduction blower fans and two electric heaters are started working, and pressure reduction blower fan is constantly delivered to the air in plenum chamber in air-cooler by circulation air path, make plenum chamber and cold wind unit inside form certain pressure reduction by the swabbing action of pressure reduction blower fan.The air of the frost layer under the effect of pressure reduction on evaporimeter and electric heater heating produces heat convection, and hot-air directly contacts defrosting with evaporator surface frost layer.Simultaneously can be according to frosting situation, select to open a pressure reduction blower fan.When defrosting finishes, above-mentioned four Electric air valves are closed, and two pressure reduction blower fans and electric heater quit work; The the 5th and the 6th Electric air valve at the return air inlet of breeze fan and air outlet place is opened, and breeze fan is started working, and in freezer, in air and air-cooler, evaporimeter carries out heat exchange.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210530047.XA CN102997567B (en) | 2012-12-10 | 2012-12-10 | Pressure differential defrosting device of evaporator in air cooler of refrigerated storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210530047.XA CN102997567B (en) | 2012-12-10 | 2012-12-10 | Pressure differential defrosting device of evaporator in air cooler of refrigerated storage |
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| Publication Number | Publication Date |
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| CN102997567A CN102997567A (en) | 2013-03-27 |
| CN102997567B true CN102997567B (en) | 2014-10-15 |
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|---|---|---|---|
| CN201210530047.XA Expired - Fee Related CN102997567B (en) | 2012-12-10 | 2012-12-10 | Pressure differential defrosting device of evaporator in air cooler of refrigerated storage |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868309B (en) * | 2014-03-19 | 2016-04-13 | 天津大学 | The device utilizing freezer outside air auxiliary electrical heater to defrost and the method for operation thereof |
| CN105276895B (en) * | 2014-07-22 | 2017-12-01 | 苏州三星电子有限公司 | A kind of wind cooling refrigerator |
| CN104848635A (en) * | 2015-02-05 | 2015-08-19 | 无锡龙舜实业有限公司 | G-20 type epoxy casting agent refrigeration equipment |
| CN105135792A (en) * | 2015-09-29 | 2015-12-09 | 天津市傲绿农副产品集团股份有限公司 | Air cooler capable of realizing internal defrosting |
| CN106322884A (en) * | 2016-08-31 | 2017-01-11 | 青岛海尔股份有限公司 | Refrigerating and freezing device |
| CN106482435A (en) * | 2016-12-05 | 2017-03-08 | 天津商业大学 | A kind of natural Defrost method of cold storage refrigerating system |
| CN108518780A (en) * | 2018-05-24 | 2018-09-11 | 潍坊广瑞纳智能冷链设备有限公司 | A kind of air-cooler and the temperature adjustment ventilation defrosting method applied to refrigerating box |
| CN108562097A (en) * | 2018-05-25 | 2018-09-21 | 合肥雪祺电气有限公司 | A kind of cold-storing duct structure of the refrigerator with damper |
| CN109210654A (en) * | 2018-10-15 | 2019-01-15 | 天津商业大学 | A kind of heat pump and air-conditioning system of synchronous defrosting and refrigeration |
| CN111412710B (en) * | 2020-04-30 | 2024-10-29 | 湖南现代物流职业技术学院 | Defrosting system and defrosting method for refrigerated container |
| CN112033081B (en) * | 2020-08-31 | 2022-01-11 | 山东冰河制冷技术有限公司 | Device for assisting electric heating defrosting by utilizing external air of refrigerator and operation method thereof |
| CN115265073A (en) * | 2022-08-26 | 2022-11-01 | 珠海格力电器股份有限公司 | Defrosting structure, refrigerator and defrosting control method of refrigerator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608891Y (en) * | 2003-04-01 | 2004-03-31 | 毕威龙 | Air cooler |
| CN201047693Y (en) * | 2007-06-02 | 2008-04-16 | 龚冬文 | Microwave defrost cold air blower |
| KR20100085228A (en) * | 2009-01-20 | 2010-07-29 | 주식회사 대우일렉트로닉스 | Defrosting apparatus of refrigerator |
| CN101738054B (en) * | 2009-12-30 | 2012-07-04 | 天津大学 | Method for defrosting based on by-pass circulating defrosting structure of refrigerator |
| US9127875B2 (en) * | 2011-02-07 | 2015-09-08 | Electrolux Home Products, Inc. | Variable power defrost heater |
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| CN102997567A (en) | 2013-03-27 |
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