CN100374801C - Planar heater - Google Patents
Planar heater Download PDFInfo
- Publication number
- CN100374801C CN100374801C CNB2003101068696A CN200310106869A CN100374801C CN 100374801 C CN100374801 C CN 100374801C CN B2003101068696 A CNB2003101068696 A CN B2003101068696A CN 200310106869 A CN200310106869 A CN 200310106869A CN 100374801 C CN100374801 C CN 100374801C
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- evaporimeter
- cold air
- heater
- plane heater
- evaporator
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Abstract
The present invention relates to a planar heater which is characterized in that compared with hot lines of other parts, hot lines arranged in the planar heaters on the front side and the rear side of an evaporator and hot lines of a cold air inflow part are more densely arranged, which makes the cold air inflow part of the original evaporator with relatively more frost formation bear concentrated heat quantity. Compared with the past planar heater with hot lines uniformly arranged, the defrosting function of each a plurality of part of the evaporator of the planar heater of the present invention is more uniform under the condition of the same heated area, and thereby, the defrosting efficiency of the evaporator is enhanced. Due to the uniform defrosting function, the defrosting time of the evaporator is shortened, and the power consumption of the refrigerator is correspondingly saved.
Description
Technical field
The present invention relates to refrigerator, relate in particular to its Defrost heater.
Background technology
General refrigerator forms freeze cycle with compressor, condenser, expansion valve and evaporimeter as the basic comprising parts.Discharge the cold air that forms by above-mentioned freeze cycle and reduce the refrigerator internal temperature, thus freezing or refrigeration keeping food.As shown in Figure 1, general refrigerator comprises: refrigerator body 100; Be divided into refrigerating chamber 110 and the refrigerating chamber 120 that two parts are freezing respectively up and down, food is taken care of in refrigeration in refrigerator body 100 inside; Be installed in the switching refrigerating chamber 110 of refrigerator body 100 1 sides and the refrigerating chamber door 130 and the refrigerating-chamber door 140 of refrigerating chamber 120; The cold air that above-mentioned refrigerating chamber 110 and refrigerating chamber 120 need provides by the freezing cycle device of being made up of compressor 150, condenser (not shown), expansion valve (not shown) and evaporimeter 160.
The effect of evaporimeter 160 is to make refrigerant evaporation become gaseous state after absorbing heat on every side in the freezing cycle device.Above-mentioned refrigerating chamber 110 and refrigerating chamber 120 back inwalls 180 form cold gas exhausting outlet 190,190a, discharge the cold air that evaporimeter 160 produces.
The refrigerator course of work with said structure is as follows.The refrigerant that becomes the low-temp low-pressure gaseous state by evaporimeter 160 flow on the compressor 150, and the refrigerant of low-temp low-pressure is compressed into high-temperature high-pressure state by compressor 150; The cold media gas of the HTHP of above-mentioned compression becomes the liquid condition of high pressure by condensation in the process of condenser; Reduce pressure (adiabatic expansion) when the refrigerant of highly pressurised liquid state is by expansion valve then, make it to be easy to evaporation at evaporimeter 160; Refrigerant inflow evaporator 160 back absorbs the heat of refrigerator inside and becomes the gaseous state of low-temp low-pressure, flow into compressor 150 in the time of the cooling ambient air once more.Form complete freeze cycle like this.
When carrying out heat exchange by evaporimeter 160, refrigerant absorbs the heat of surrounding air.Cooled air (cold air) is subjected to being arranged on the driving of the Air Blast fan 200 of evaporimeter 160 upper ends, flows into refrigerator inside by above-mentioned cold gas exhausting outlet 190,190a, and reduces the temperature of refrigerating chamber 110 and refrigerating chamber 120.
The heat of vaporization that the effect of evaporimeter 160 makes refrigerant absorb surrounding air becomes gaseous state.As shown in Figure 2, evaporimeter 160 comprises: a plurality of pipelines 161 that refrigerant flows; Set a distance is provided with fin 162 in described pipeline 161 spaced surfaces institute; In order to prevent moving of pipeline 161, the support of pipelines of fixing at pipeline 161 two ends 163; Be arranged on the plane heater 165 of the front and back side of support of pipelines 163, the effect of plane heater 165 is to remove the frost that is formed on pipeline 161 and fin 162 by the temperature difference of cold air that flows into once more after the circulation in refrigerator and refrigerant.Described plane heater 165 structures as September in 1999 disclosed Republic of Korea on the 15th utility model openly announce as described in the Defrost heater (plane heater) of 1999-36171 number refrigerator, the corner of the both sides of the support of pipelines 163 of one of component parts of evaporimeter 160 is bent to form fixture 164, heating face (not shown) by fixture 164 plane heaters 165 inserts to evaporimeter 160, makes the front and space, the back institute set a distance of plane heater 165 and evaporimeter 160.
The detailed process of utilizing above-mentioned plane heater to remove the frost that forms on the evaporimeter is described as follows.
The cold air (the high cold air of low humiture that mixes formation when frequently opening and closing door of refrigerator with extraneous air) that has improved in refrigerating chamber 110 and refrigerating chamber 120 circulation back temperature supplies to when cooling off once more on the evaporimeter 160 again by cold duct (duct) 210, circular flow is crossed behind refrigerating chamber 110 and the refrigerating chamber 120 once more the cold air of inflow evaporator 160 and is flow between the refrigerant of evaporimeter 160 pipelines 161 and has temperature difference, because that this temperature difference forms on pipeline 161 and fin 162 is white.The process of utilizing plane heater 165 to remove frost is: at first stop the freeze cycle of refrigerator, connect power supply for then plane heater 165, remove the above-mentioned frost that is formed on pipeline 161 and the fin 162 by the heating functioin of plane heater 165.
The surface temperature of furnace bottom heater (siege heater, not shown in the figures) was more than 600 ℃ in the past, in the world for refrigerant (environmental protection refrigerant R-600a: burning-point security 494 ℃ of ignition temperatures) and the temperature stipulated is 394 ℃.And the temperature of above-mentioned plane heater can only rise to below 80～100 ℃.So the explosion danger that has prevented that evaporimeter 160 pipelines 161 internal cause refrigerant temperatures are too high and caused, the security that has improved refrigerant greatly.
But there are some problems in plane heater in the past.As shown in Figure 3, the area of heater is divided into A, B, a C3 part, position B, the C that the many position A of frost are few with frost do not considered in the arrangement of hot line 167, all be in line form or become zigzag (zigzag) arrangement uniformly of identical spacing.The refrigerant inflow A of portion in the evaporimeter 160 is that evaporimeter 160 bottoms form more relatively frost.But, above-mentioned hot line 167 can only act on uniformly on the evaporimeter 160 because arranging the heat of heater generation.So can not be to the effect that effectively defrosts of evaporimeter 160 bottoms, and then cause on the evaporimeter 160/the defrosting effect of bottom C, A and middle body B is inhomogeneous.Evaporimeter 160 defrosting efficiency have been reduced thus.
In addition, because on the evaporimeter 160/the uneven defrosting effect of bottom C, A and middle body B, the defrosting time of evaporimeter 160 is delayed, and has increased the power consumption of refrigerator.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing refrigerator exists, the invention provides a kind of plane heater, with uniform high-efficiency remove the pipeline that is formed on evaporimeter and the frost on the fin.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of plane heater, comprise the hot line that is arranged in the heater, it is characterized in that denser than other local hot line arrangement of the hot line of plane heater that corresponding evaporimeter cold air flows into the part position, make evaporimeter cold air flow into and be subjected to heat in the segment set, described plane heater, the dense corresponding evaporimeter cold air that is arranged in of hot line that accounts for 60-80% in the wherein whole hot line flows on the position of part.
Plane heater of the present invention is compared with the heater that the evaporimeter each several part is evenly heated, and has shortened the defrosting time of evaporimeter greatly, and has saved the power consumption of refrigerator.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the brief configuration schematic diagram of general refrigerator.
Fig. 2 is the concise and to the point schematic perspective view that in the past was provided with plane heater before and after the evaporimeter in the Defrost heater of side.
Fig. 3 is the hot line ordered state schematic diagram of plane heater in the past.
Fig. 4 is the concise and to the point schematic perspective view that has fixedly installed the evaporimeter of plane heater of the present invention.
Fig. 5 is the hot line ordered state schematic diagram of plane heater of the present invention.
Fig. 6 is the view that plane heater of the present invention is removed the plane heater thermal conduction characteristic of frost on the evaporimeter.
The number in the figure explanation:
160,360. evaporimeters, 161,361. pipelines (tube)
162,362. fin, 163,363. supports of pipelines (tube bracket)
164. fixture 165,365. plane heaters
166,366. shells (cover), 167,367. hot lines
368. heating face 369. adiabatic faces
A, A '. evaporimeter end portion (cold air inflow part)
B. evaporimeter middle body
C, C '. evaporimeter upper part (cold air outflow part)
The specific embodiment
As Fig. 4, shown in Figure 5, a kind of heat that hot line 367 is produced acts on the defrost plane heater 365 of operation of evaporimeter 360 front and back sides uniformly.Corresponding evaporimeter 360 cold air flow into part A ' hot line 367 of the plane heater 365 of position than other local hot line 367 arrange dense, make cold air inflow part A ' concentrated area receives more heat.
Describe plane heater of the present invention below in detail.
The same heating area that plane heater of the present invention is compared plane heater 165 in the past flows into part A to cold air ' (evaporimeter is divided into two zones up and down to flow out part B ' with cold air, the zone of cold air inflow side is called cold air and flows into part, its opposition side is called cold air and flows out part) the defrosting effect more effective, improved the defrosting efficiency of evaporimeter 360.In order to reach above-mentioned technique effect, be positioned at cold air and flow into part A the heat that ' the hot line 367 dense arrangements of the plane heater 365 of position, make the cold air of the evaporimeter 360 that produces more frost flow into part A ' are concentrated.The detailed description of the invention is as follows:
The evaporimeter 360 that fixedly installs heater 365 of the present invention can be the evaporimeter of existing fin-duct type structure as shown in Figure 2.As shown in Figure 4, evaporimeter 360 is divided into according to the liquid form of cold air and flows into and carry out after the heat exchange flowing out 2 parts to evaporimeter 360 is outside with refrigerant, and the part that cold air flows into is that cold air flows into part A '; The part that cold air flows out is that cold air flows out portion C ', the cold air of above-mentioned evaporimeter flows into part A ' highly be 1/2nd of evaporimeter 360 whole heights.
Major technique design of the present invention is plane heater.So be not described in detail for evaporimeter.
As shown in Figure 5, plane heater 365 of the present invention comprises the shell of being made by the heat resistanceheat resistant resin material 366; The form that in shell 366, is in line or the hot line 367 that becomes zigzag to arrange; Connect the electric wire (not shown) that is connected hot line 367 of power supply for hot line 367.
Arrange hot line 367 in the both sides of shell 366, the position that is fixed on evaporimeter 360 front and back sides is a heating face (with reference to Fig. 6) 368; 368 opposition sides of heating face are adiabatic face (with reference to Fig. 6) 369.Paste or scribble the heat-insulating material (not shown) of good adiabatic function on the adiabatic face 369, avoided heat that heating face 368 produces by adiabatic face 369 be communicated to plane heater 365 outsides and evaporimeter 360 around.
In addition, in order to strengthen the adhesion of the plane heater 365 that is fixed on evaporimeter 360 front and back sides, on heating face 368, be coated with the stickup parts.
The cold air that is positioned at evaporimeter 360 flows into part A ' plane heater 365 hot lines 367 account for the 60-80% of whole hot line 367 greatly.
As follows from the plane heater that is fixed on evaporimeter front and back side to the heat transfer process of evaporimeter.
As shown in Figure 6, after 120 circulations of refrigerating chamber 110 and refrigerating chamber once more the cold air of inflow evaporator 360 with between the refrigerant of evaporimeter 360 pipelines 361 internal flows because temperature difference and on evaporimeter 360 pipelines 361 and fin 362, forming when white, interrupt the freeze cycle in the running, give and connect the power supply defrosting on the plane heater 365.As shown in Figure 6, after plane heater 365 is connected power supply, be positioned at evaporimeter 360 cold air and flow into part A the hot line 367 of the hot line 367 dense cold air that are arranged in evaporimeter 360 lower ends of plane heater 365 ' flow into part A ', focus on the end portion A ' of evaporimeter 360 by the heat of heating generation, when removing frost, also produce heat at the end portion A ' of evaporimeter 360 locational hot line 367 in addition and be transmitted to cold air and flow out portion C ' remove frost there.Thereby the defrosting effect that realizes 365 pairs of evaporimeter 360 various pieces of plane heater is more reasonable.
In above-mentioned defrosting operation process, the heat that is fixed on plane heater 365 generations of evaporimeter 360 front and back sides does not have explosion danger to refrigerant, and operation safely can defrost.
Above-mentioned plane heater be not only applicable to refrigerating chamber at upside, refrigerating chamber at the top of lower end formula (Top-Type) refrigerator, be applicable to that also refrigerating chamber lays respectively at block form (the Side By Side-Type) refrigerator of refrigerator body left and right sides at the end of lower end formula (Bottom-Type) refrigerator and refrigerating chamber and refrigerating chamber at upside, refrigerating chamber.
The effect of invention
Plane heater of the present invention has following effect. Generate in order to remove at evaporator pipeline and fin Frost, be arranged in the plane heater of side before and after the evaporimeter hot line that flows into the position at cold air arrange dense, So can be subjected to more heat so that the many evaporimeter cold air inflow sections of original frosting concentrate. Such plane Heater is compared with the plane heater of in the past hot line arrangement pitches homogeneous, in the identical situation of heating area The defrosting effect of each several part is more even on the lower evaporimeter, thereby improved the defrosting efficiency of evaporimeter.
And because the defrosting effect is even, shortened the defrosting time of evaporimeter, saved corresponding refrigerator Power consumption.
Claims (1)
1. plane heater, comprise the hot line that is arranged in the heater, it is characterized in that denser than other local hot line arrangement of the hot line of plane heater that corresponding evaporimeter cold air flows into the part position, make evaporimeter cold air flow in the segment set and be subjected to heat that the dense corresponding evaporimeter cold air that is arranged in of hot line that accounts for 60-80% in the whole hot line flows on the position of part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101068696A CN100374801C (en) | 2003-10-30 | 2003-10-30 | Planar heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101068696A CN100374801C (en) | 2003-10-30 | 2003-10-30 | Planar heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1611885A CN1611885A (en) | 2005-05-04 |
| CN100374801C true CN100374801C (en) | 2008-03-12 |
Family
ID=34757840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101068696A Expired - Fee Related CN100374801C (en) | 2003-10-30 | 2003-10-30 | Planar heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100374801C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353203A (en) * | 2013-05-31 | 2013-10-16 | 镇江天信电器有限公司 | Improved mounting structure of defrosting heater |
| CN105157324A (en) * | 2015-09-30 | 2015-12-16 | 合肥华凌股份有限公司 | Defrosting device and refrigerator provided with same |
| CN105352227A (en) * | 2015-11-20 | 2016-02-24 | 苏州汉克山姆照明科技有限公司 | Anti-icing type cooling grid |
| CN105485970A (en) * | 2015-11-20 | 2016-04-13 | 苏州汉克山姆照明科技有限公司 | Efficient defrosting and cooling grid |
| KR101947147B1 (en) * | 2016-09-08 | 2019-02-14 | (주) 파루 | Plane heater for refrigerator and the control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2108808A (en) * | 1981-10-28 | 1983-05-18 | Sakae Senpaku Denki Co | Windscreen defroster |
| CN2067801U (en) * | 1990-05-26 | 1990-12-19 | 宋士宁 | Household universal electrothermal tray |
| JPH10232082A (en) * | 1997-02-20 | 1998-09-02 | Hoshizaki Electric Co Ltd | Fixing structure of glass tube heater in cooler/ refrigerator |
| KR19990036171A (en) * | 1996-06-05 | 1999-05-25 | 윤종용 | Piezoelectric Step Motor |
| US6266969B1 (en) * | 1998-11-27 | 2001-07-31 | Whirlpool Corporation | Device for defrosting evaporator in a refrigerator compartment |
| US6519835B1 (en) * | 2000-08-18 | 2003-02-18 | Watlow Polymer Technologies | Method of formable thermoplastic laminate heated element assembly |
-
2003
- 2003-10-30 CN CNB2003101068696A patent/CN100374801C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2108808A (en) * | 1981-10-28 | 1983-05-18 | Sakae Senpaku Denki Co | Windscreen defroster |
| CN2067801U (en) * | 1990-05-26 | 1990-12-19 | 宋士宁 | Household universal electrothermal tray |
| KR19990036171A (en) * | 1996-06-05 | 1999-05-25 | 윤종용 | Piezoelectric Step Motor |
| JPH10232082A (en) * | 1997-02-20 | 1998-09-02 | Hoshizaki Electric Co Ltd | Fixing structure of glass tube heater in cooler/ refrigerator |
| US6266969B1 (en) * | 1998-11-27 | 2001-07-31 | Whirlpool Corporation | Device for defrosting evaporator in a refrigerator compartment |
| US6519835B1 (en) * | 2000-08-18 | 2003-02-18 | Watlow Polymer Technologies | Method of formable thermoplastic laminate heated element assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1611885A (en) | 2005-05-04 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |