CN1584459A - Defrosting heater of refrigerator - Google Patents
Defrosting heater of refrigerator Download PDFInfo
- Publication number
- CN1584459A CN1584459A CN 03144116 CN03144116A CN1584459A CN 1584459 A CN1584459 A CN 1584459A CN 03144116 CN03144116 CN 03144116 CN 03144116 A CN03144116 A CN 03144116A CN 1584459 A CN1584459 A CN 1584459A
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- China
- Prior art keywords
- refrigerator
- heater
- outer tube
- evaporimeter
- ceramic coating
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- Defrosting Systems (AREA)
Abstract
A defrosting heater for electric refrigerator consists of electric heating-wires, insulating casings with outer casings and ceramic coatings. The outer casings are made of high strength thermal conductive metals. The ceramic coatings are of far-infrared materials, so that they work in high efficiency, when the heater works, with simple structure, low cost and good corrosion-proof performance.
Description
Technical field
The present invention relates to a kind of parts of refrigerator, particularly relate to a kind of refrigerator Defrost heater.
Background technology
As everyone knows, refrigerator is that a kind of refrigerant that utilizes evaporates in evaporimeter, absorbs the heat of refrigerator inner air, thereby makes the refrigerating chamber of refrigerator and the household electrical appliance that refrigerating chamber is kept low-temperature condition.The refrigerating chamber and the food in the refrigerating chamber that are stored in refrigerator can be preserved the long period with freezing or frozen state respectively.
As shown in Figure 1, the evaporimeter 10 of refrigerator generally comprises: internal flow have refrigerant be used for cool off the refrigerant pipe 12 of ambient air and several vertically are connected the heat exchanging fin 14 that being used on the refrigerant pipe carried out heat exchange.
Described refrigerant pipe 12 snakelike coiling several times form the horizontal refrigerant pipe structure of multilayer that is parallel to each other, and the two ends of the horizontal refrigerant pipe structure of this multilayer are combined with support plate 16a and support plate 16b respectively.
During low temperature liquid refrigerant evaporation in the described evaporimeter 10, absorb a large amount of heats of the air of refrigerator inside by heat exchanging fin 14, make the temperature reduction of the air that is refrigerator inside, Cryogenic air is fed in refrigerating chamber and the refrigerating chamber, is used for freezing or chilled food.Cryogenic air is carried out after the heat exchange with food in refrigerating chamber or refrigerating chamber, and temperature raises to some extent, is sent back to evaporimeter 10 again, carries out heat exchange once more, forms Cryogenic air.Above process moves in circles, thereby guarantees to be placed on the food storage long period in freezer chamber of refrigerator and the refrigerating chamber.
But, because described evaporimeter 10 always is in low-temperature condition, when the moisture that comprises in the air of refrigerator inside touches evaporimeter 10, will frosting during evaporimeter surperficial, As time goes on the frost on the surface of evaporimeter can be long-pending more thick more, influences the heat exchanger effectiveness of evaporimeter 10.
For the evaporimeter that makes refrigerator keeps original heat exchanger effectiveness, just must be regularly the evaporimeter of refrigerator be defrosted.Defrost method generally is, in a side of evaporimeter a heater is set, and regularly starts this heater, and the heater liberated heat makes the frost of evaporator surface be melted into water and flows away.
As shown in Figure 2, heater 20 is arranged on the bottom of the two sides of evaporimeter 10 usually, and heater 20 comprises: the heating wire 22 of energising back heating, be enclosed within the insulation tube 24 of heating wire 22 outsides and be enclosed within the outer tube 26 of insulation tube 24 outsides.
The outer tube 26 of described heater 20 must be able to bear the influence of the moisture of the water that produces in the defrost process and refrigerator inside, so need make with the stronger material of rustless property, generally adopts the material of high prices such as stainless steel or nickel-chrome alloy steel.But there is the high shortcoming of above-mentioned material price, is unfavorable for reducing production costs.
In addition; in recent years for the conservation of nature environment; some refrigerator adopts natural-gas as refrigerant; because the burning-point of this refrigerant only is 394 ℃; so during to the evaporator defrost of this refrigerator; the surface temperature of heater 20 is the highest must not to surpass 394 ℃, otherwise the refrigerant that leaks out is blasted.
Because the surface temperature of above-mentioned existing heater 20 does not obviously meet above-mentioned requirements usually up to 500～600 ℃.People have to by a kind of method of supply voltage being carried out halfwave rectifier the surface temperature control of heater 20 below 394 ℃.
But after above-mentioned control, the heating efficiency of heater 20 has reduced by 1/2, in fact do not reach due defrosting ability point, and increased control assembly, and complex structure, production cost increases.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of the Defrost heater of above-mentioned existing refrigerator, and the Defrost heater of the refrigerator that a kind of production cost is low, surface temperature is lower, defrosting efficiency is high is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the Defrost heater of refrigerator of the present invention comprises: the heating wire of energising back heating, be enclosed within the heating wire outside insulation tube, be enclosed within the outer tube of insulation tube outside and be formed on outer tube outer surface ceramic coating.
Described heating wire energising back heating, and, remove the frost of evaporator surface to the evaporimeter radiations heat energy.Described insulation tube is used for heating wire and extraneous electricity are isolated.
Described outer tube is the part that forms the heater outward appearance, is made by rigidity height, metal material that thermal conductivity is good.
Described outer tube can be iron pipe.
Outer tube can also be aluminum pipe or copper pipe.
Described ceramic coating is formed by the far-infrared ceramic coating coating.
Heater adstante febre, ceramic coating are removed the frost of evaporator surface rapidly to the evaporimeter infrared radiation.Even the temperature of heater surfaces below the burning point of cold media gas, to the evaporimeter infrared radiation, also can reach the purpose of defrosting by ceramic coating rapidly, efficiently.In addition, ceramic coating itself has good antirust function, even outer tube is to make with the relatively poor material of rustless property, has had ceramic coating also can make whole heater have enough antirust abilities.
The invention has the beneficial effects as follows: simple in structure, production cost is low, good antirust property; Heater adstante febre, ceramic coating also can keep higher defrosting efficiency to the evaporimeter infrared radiation even the heater table surface temperature is low.
Description of drawings
Fig. 1 is the structural representation of the evaporimeter of general refrigerator;
Fig. 2 is the structural representation of the Defrost heater of existing refrigerator;
Fig. 3 is the structural representation of the Defrost heater specific embodiment of refrigerator of the present invention.
Among the figure:
40: Defrost heater 42: heating wire
44: insulation tube 46: outer tube
48: ceramic coating
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 3, the Defrost heater 40 of present embodiment refrigerator comprises: the electric heating 42 of energising back heating, be enclosed within the heating wire outside insulation tube 44, be enclosed within the outer tube 46 of insulation tube 44 outsides and be formed on outer tube 46 outer surface ceramic coatings 48.
Described heating wire 42 energising back heatings, and, remove the frost of evaporator surface to the evaporimeter radiations heat energy.Described insulation tube 44 is used for heating wire 42 and extraneous electricity are isolated.
Described outer tube 46 is the parts that form the heater outward appearance, is made by rigidity height, metal material that thermal conductivity is good.
Present embodiment middle external tube 46 is an iron pipe.
Described ceramic coating 48 is formed by the far-infrared ceramic coating coating.Heater adstante febre, ceramic coating 48 are removed the frost of evaporator surface rapidly to the evaporimeter infrared radiation.Even the temperature on heater 40 surfaces below the burning point of cold media gas, to the evaporimeter infrared radiation, also can reach the purpose of defrosting by ceramic coating 48 rapidly, efficiently.In addition, ceramic coating 48 itself has good antirust function, even outer tube 46 is to make with the relatively poor material of rustless property, has had ceramic coating 48 also can make whole heater have enough antirust abilities.
Obviously, according to basic fundamental design of the present invention, persons skilled in the art need not by creative work, can associate some other specific embodiment, and these specific embodiment also should belong to protection scope of the present invention.
Claims (4)
1. the Defrost heater of a refrigerator comprises: the heating wire of energising back heating, be enclosed within the insulation tube of heating wire outside and be enclosed within the outer tube of insulation tube outside, it is characterized in that: also comprise: be formed on outer tube (46) outer surface ceramic coating (48).
2. the Defrost heater of refrigerator according to claim 1 is characterized in that: described outer tube (46) is made by rigidity height, metal material that thermal conductivity is good.
3. the Defrost heater of refrigerator according to claim 1 is characterized in that: described ceramic coating (48) is formed by the far-infrared ceramic coating coating.
4. according to the Defrost heater of claim 1,2 or 3 described refrigerators, it is characterized in that: described outer tube (46) is an iron pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144116 CN1584459A (en) | 2003-08-22 | 2003-08-22 | Defrosting heater of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144116 CN1584459A (en) | 2003-08-22 | 2003-08-22 | Defrosting heater of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1584459A true CN1584459A (en) | 2005-02-23 |
Family
ID=34597396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03144116 Pending CN1584459A (en) | 2003-08-22 | 2003-08-22 | Defrosting heater of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1584459A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676856A (en) * | 2015-11-06 | 2017-05-17 | 无锡小天鹅股份有限公司 | Clothes dryer |
| CN108800727A (en) * | 2018-04-19 | 2018-11-13 | 合肥美的电冰箱有限公司 | Defrost component and refrigerating plant |
| CN110425912A (en) * | 2019-08-30 | 2019-11-08 | 中国科学院理化技术研究所 | A kind of defrosting sleeve heat exchange structure and its control method |
| WO2021088857A1 (en) * | 2019-11-06 | 2021-05-14 | 海尔智家股份有限公司 | Refrigeration appliance, and heating assembly having hydrophobic layer |
-
2003
- 2003-08-22 CN CN 03144116 patent/CN1584459A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676856A (en) * | 2015-11-06 | 2017-05-17 | 无锡小天鹅股份有限公司 | Clothes dryer |
| CN108800727A (en) * | 2018-04-19 | 2018-11-13 | 合肥美的电冰箱有限公司 | Defrost component and refrigerating plant |
| CN110425912A (en) * | 2019-08-30 | 2019-11-08 | 中国科学院理化技术研究所 | A kind of defrosting sleeve heat exchange structure and its control method |
| CN110425912B (en) * | 2019-08-30 | 2024-04-16 | 中国科学院理化技术研究所 | Defrosting sleeve heat exchange structure and control method thereof |
| WO2021088857A1 (en) * | 2019-11-06 | 2021-05-14 | 海尔智家股份有限公司 | Refrigeration appliance, and heating assembly having hydrophobic layer |
| CN113710974A (en) * | 2019-11-06 | 2021-11-26 | 海尔智家股份有限公司 | Refrigeration appliance and heating assembly with hydrophobic layer |
| EP4056932A4 (en) * | 2019-11-06 | 2022-12-21 | Haier Smart Home Co., Ltd. | Refrigeration appliance, and heating assembly having hydrophobic layer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |