WO2003008880A1 - A device for the rapid defrosting of the surface of evaporators - Google Patents
A device for the rapid defrosting of the surface of evaporators Download PDFInfo
- Publication number
- WO2003008880A1 WO2003008880A1 PCT/IT2002/000349 IT0200349W WO03008880A1 WO 2003008880 A1 WO2003008880 A1 WO 2003008880A1 IT 0200349 W IT0200349 W IT 0200349W WO 03008880 A1 WO03008880 A1 WO 03008880A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling plates
- rapid defrosting
- resistive sheet
- ptf
- evaporators according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- 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
- F25D21/08—Removing frost by electric heating
Definitions
- a device for the rapid defrosting of the surface of evaporators is provided.
- the present invention relates to a device which is applied to an evaporator in order to defrost the ice layer build-up, used in refrigeration circuits or units.
- the evaporators in refrigerating circuits usually consist of a number of cooling plates parallelly arranged and suitably spaced therebetween. Openings are obtained in the cooling plates, inside which a cooling coil is inserted.
- a refrigerant circulates inside the cooling coil which, thanks to the physical contact and, then, to the thermal exchange between the coil and the cooling plates, allows for the lowering of the temperature of the plates and, consequently the cooling of the space wherein the evaporator is contained.
- the aim of the present invention is to create a device which permits to fully use the characteristics offered by the resistive sheets and, then, a device wherein the heat exchange between the resistive sheets and said cooling plates is more fully optimized.
- a device for the rapid defrosting of the surface of evaporators comprising pellicular resistive means, said evaporator including a number of cooling plates spaced parallelly spaced apart therebetween having openings in which a cooling coil is inserted, characterized in that said pellicular resistive means comprise at least one PTF resistive sheet, said at least one PTF resistive sheet and said cooling plates being physically in contact therebetween, that said physical contact is located in a number of areas and that, at said physical contact areas, surfaces of thermal exchange are provided so as to increase the efficiency of heat transmission from said at least one PTF resistive sheet to said cooling plates.
- the surfaces of thermal exchange are made of perpendicular flaps located on the edges of the cooling plates, the perpendicular flaps being located substantially in a plane and said at least one PTF resistive sheet being placed on the perpendicular flaps.
- the heat transmission between the PTF resistive sheet and the cooling plates occurs over a large surface of contact, therefore allowing for an optimum distribution of the heat generation.
- the defrosting time is notably decreased and, at the same time, it is possible to decrease the electrical power dissipated by the PTF resistive sheet.
- said perpendicular flaps are obtained by L-bending the adj acent edges of said cooling plates.
- FIG. 1 is a partial and schematic prospective view of a device according to the present invention.
- FIG. 2 is a partial prospective view of a cooling plate of the device of figure 1;
- figure 3 is a partial cross section of the evaporator of figure 1 ;
- FIG. 4 is a partial cross section of the evaporator containing the device according to a first variant of the invention
- FIG. 5 is a partial prospective view of a cooling plate according to a second variant of the invention.
- FIG. 6 is a top view of a resistive sheet according to a third variant of the invention.
- An evaporator indicated by 10 is represented in figure 1, comprising a device 12 for the rapid defrosting of the surface of the evaporator.
- the evaporator 10 comprises a number of cooling plates 14 (shown better in figure 2) each having a rectangular shape with an L-shaped bended edge 14a to form a perpendicular flap 16.
- the dimensions of the L-shaped bended edges 14 are the same so as the perpendicular flaps 1 are arranged on the same plane.
- Openings 18 are made in the cooling plates 14 inside which a cooling coil 20 is inserted and is comprised of rectilinear portions 21a and curved portions 21b, as represented in figure 3.
- the openings 18 have wide, and circle-like ends 18a, so as to house the rectilinear portions 21a of the cooling coil 20 which orthogonally passes into all the cooling plates 14.
- the device 12 comprises a resistive sheet 22 of the PTF-type (polymer thick film) placed on the perpendicular flaps 16 of the cooling plates 14.
- the PTF resistive sheet 22 contains various conductive areas or tracks 22a electrically connected therebetween which are supplied by an electrical supply source.
- the resistive sheet 22 has preferably PTC characteristics (positive coefficient temperature) so that, when the temperature increases, the value of the electrical resistance increases, thus limiting the electrical current which flows into it.
- edges 14a of the cooling plates 14 may all be L-bent on the same side, as indicated in figure 2, or each edge 14a may be indifferently bent on one side or on the other side. Furthemore, it is possible to bend all the edges 14a of the cooling plates 14, or only a limited number of them, for example only the odd numbers, i.e. the first one, the third one and so on. In order to assure a sufficient transmission of heat, the number of the cooling plates 14, in which the edges 14a have been bent into an L-shape, should be preferably greater than 30% of the total amount.
- the perpendicular flaps 16 extend over a length equal to that of the cooling plates 14 and over a width equal to at least two times the thickness of the cooling plates 14.
- the device 12 consists of applying a resistive sheet 22 over the edges 14a of the cooling plates 14 by interposing a thermal conductive paste 30, of a well- known type such as those composed of silicone and metallic oxides.
- the paste 20 allows for an efficacious transmission of the heat from the resistive sheet 22 to the edges 14a of the cooling plates 14.
- the paste 30 should be adhesive and electrically insulated.
- the adhesive paste 30 allows for a firm fixing of the resistive sheet 22 to the edges 14a of the cooling plates 14 and, being electrically insulated, it avoids electrical contacts between the parts under tension (the resistive sheet 12) and the evaporator 10, in case of laceration of the resistive sheet 22.
- FIG 5 a second variant of the invention is represented, wherein the resistive sheets 122 have the same shape, but slightly smaller in respect to that of the cooling plates 14, and they are placed over the surfaces of the cooling plates 14. Openings 124 are made into the resistive sheets 122 so that the latter do not cover the openings 18 of the cooling plates 14. It is possible to apply a resistive sheet 122 over each cooling plate 124, or only over a reduced number of them, but preferably greater than 30%.
- FIG 6 a third variant of the invention is illustrated, wherein the resistive sheets 222 used are comb-shaped with prongs 224 designed to be inserted into the openings 18 of the cooling plates 14.
- the width of the prongs 222 must be equal to the width of the openings 18 of the cooling plates 14.
- the total number of the resistive sheets 222 and, then, of the prongs 224 could fill all the openings 18 of the cooling plates 14, or only a reduced number of them, but still preferably more than 30% of the total amount. It is evident mat conceptually and functionally equivalent variants fall inside the protection field of the present invention.
- thermically conductive paste 30 it is possible to use a thermically conductive paste 30 also in cases wherein the resistive sheet 22 is placed over the flaps 16 obtained by L- bending the ends 14a of the cooling plates 14.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
A device for the rapid defrosting of ice (12) which is comprised of resistive sheets (22) placed over an evaporator (10) which include a number of cooling plates (14). The resistive sheets (22) and the cooling plates (14) are physically in contact therebetween, the physical contact is made in a number of areas where thermal exchange surfaces (16, 30) are located, so as to increase the efficiency of heat transmission from the resistive sheets (22) to the cooling plats (14).
Description
A device for the rapid defrosting of the surface of evaporators.
The present invention relates to a device which is applied to an evaporator in order to defrost the ice layer build-up, used in refrigeration circuits or units. The evaporators in refrigerating circuits usually consist of a number of cooling plates parallelly arranged and suitably spaced therebetween. Openings are obtained in the cooling plates, inside which a cooling coil is inserted. A refrigerant circulates inside the cooling coil which, thanks to the physical contact and, then, to the thermal exchange between the coil and the cooling plates, allows for the lowering of the temperature of the plates and, consequently the cooling of the space wherein the evaporator is contained. It is known that, due to the humidity always existing in the air and due to the notably low temperatures of the cold surfaces (coil and cooling plates), evaporators are covered by an ice layer, the thickness of which continuously increases over time. The ice layer formed reduces the thermal exchange and, then, reduces the efficiency of the refrigerating circuit, whereby the circuit must continually function, with a consequent increase in the cost and thus a greater wear on the components of the circuit. Therefore, different solutions have been developed in order to eliminate this drawback, by using electrical resistances to defrost the surface of the evaporator, such as plated resistances. However, these resistances have a drawback in producing heat in certain positions and, consequently, the defrosting time is increased. One better solution is described in the German Patent N° 1816640 filed on 23.12.1968 in the name of Robert Steger which consists of a resistive sheet placed on the walls of the evaporator.
This solution is innovative respect to the defrosting system described above, because the heat generated is distributed over a surface greater than that of the usual system, such as that of the plated resistances. Nonetheless, this solution has some drawbacks due to the fact that the thermal exchange between the
resistive sheet and the cooling plates is not optimized, because the improved characteristics of the new solution are not completely employed. Therefore, the above-mentioned drawbacks remain, i.e. the defrosting time is still long with a consequential increase in the costs. The aim of the present invention is to create a device which permits to fully use the characteristics offered by the resistive sheets and, then, a device wherein the heat exchange between the resistive sheets and said cooling plates is more fully optimized. The aim is reached through a device of the type initially indicated, namely a device for the rapid defrosting of the surface of evaporators comprising pellicular resistive means, said evaporator including a number of cooling plates spaced parallelly spaced apart therebetween having openings in which a cooling coil is inserted, characterized in that said pellicular resistive means comprise at least one PTF resistive sheet, said at least one PTF resistive sheet and said cooling plates being physically in contact therebetween, that said physical contact is located in a number of areas and that, at said physical contact areas, surfaces of thermal exchange are provided so as to increase the efficiency of heat transmission from said at least one PTF resistive sheet to said cooling plates. In particular, the surfaces of thermal exchange are made of perpendicular flaps located on the edges of the cooling plates, the perpendicular flaps being located substantially in a plane and said at least one PTF resistive sheet being placed on the perpendicular flaps. In such a way, the heat transmission between the PTF resistive sheet and the cooling plates occurs over a large surface of contact, therefore allowing for an optimum distribution of the heat generation. The defrosting time is notably decreased and, at the same time, it is possible to decrease the electrical power dissipated by the PTF resistive sheet. In order to simplify the construction, said perpendicular flaps are obtained by L-bending the adj acent edges of said cooling plates.
Therefore, it is evident that the present invention allows for an efficiency and an efficacious transmission of the heat generated by the PTF resistive sheet. These and other advantages of the present invention will become more evident form the following detailed description given by an illustrative and non limitative purpose, with reference to the subsequent enclosed drawings wherein:
- figure 1 is a partial and schematic prospective view of a device according to the present invention;
- figure 2 is a partial prospective view of a cooling plate of the device of figure 1;
- figure 3 is a partial cross section of the evaporator of figure 1 ;
- figure 4 is a partial cross section of the evaporator containing the device according to a first variant of the invention;
- figure 5 is a partial prospective view of a cooling plate according to a second variant of the invention;
- figure 6 is a top view of a resistive sheet according to a third variant of the invention;
An evaporator indicated by 10 is represented in figure 1, comprising a device 12 for the rapid defrosting of the surface of the evaporator. The evaporator 10 comprises a number of cooling plates 14 (shown better in figure 2) each having a rectangular shape with an L-shaped bended edge 14a to form a perpendicular flap 16. The dimensions of the L-shaped bended edges 14 are the same so as the perpendicular flaps 1 are arranged on the same plane. Openings 18 are made in the cooling plates 14 inside which a cooling coil 20 is inserted and is comprised of rectilinear portions 21a and curved portions 21b, as represented in figure 3. More precisely, the openings 18 have wide, and circle-like ends 18a, so as to house the rectilinear portions 21a of the cooling coil 20 which orthogonally passes into all the cooling plates 14. The device 12 comprises a resistive sheet 22 of the PTF-type (polymer thick
film) placed on the perpendicular flaps 16 of the cooling plates 14. The PTF resistive sheet 22 contains various conductive areas or tracks 22a electrically connected therebetween which are supplied by an electrical supply source. The resistive sheet 22 has preferably PTC characteristics (positive coefficient temperature) so that, when the temperature increases, the value of the electrical resistance increases, thus limiting the electrical current which flows into it.
Thanks to the surfaces of the thermal exchange thus made, an optimum trasmission of heat is guaranteed. The edges 14a of the cooling plates 14 may all be L-bent on the same side, as indicated in figure 2, or each edge 14a may be indifferently bent on one side or on the other side. Furthemore, it is possible to bend all the edges 14a of the cooling plates 14, or only a limited number of them, for example only the odd numbers, i.e. the first one, the third one and so on. In order to assure a sufficient transmission of heat, the number of the cooling plates 14, in which the edges 14a have been bent into an L-shape, should be preferably greater than 30% of the total amount. For the same reason, the perpendicular flaps 16 extend over a length equal to that of the cooling plates 14 and over a width equal to at least two times the thickness of the cooling plates 14. In figure 4 the first modification of the invention is represented, in which the device 12 consists of applying a resistive sheet 22 over the edges 14a of the cooling plates 14 by interposing a thermal conductive paste 30, of a well- known type such as those composed of silicone and metallic oxides. The paste 20 allows for an efficacious transmission of the heat from the resistive sheet 22 to the edges 14a of the cooling plates 14.
Preferably, the paste 30 should be adhesive and electrically insulated. In such a way the adhesive paste 30 allows for a firm fixing of the resistive sheet 22 to the edges 14a of the cooling plates 14 and, being electrically insulated, it avoids electrical contacts between the parts under tension (the resistive sheet 12) and the evaporator 10, in case of laceration of the resistive sheet 22.
In figure 5 a second variant of the invention is represented, wherein the resistive sheets 122 have the same shape, but slightly smaller in respect to that of the cooling plates 14, and they are placed over the surfaces of the cooling plates 14. Openings 124 are made into the resistive sheets 122 so that the latter do not cover the openings 18 of the cooling plates 14. It is possible to apply a resistive sheet 122 over each cooling plate 124, or only over a reduced number of them, but preferably greater than 30%.
In figure 6 a third variant of the invention is illustrated, wherein the resistive sheets 222 used are comb-shaped with prongs 224 designed to be inserted into the openings 18 of the cooling plates 14. The width of the prongs 222 must be equal to the width of the openings 18 of the cooling plates 14. The total number of the resistive sheets 222 and, then, of the prongs 224 could fill all the openings 18 of the cooling plates 14, or only a reduced number of them, but still preferably more than 30% of the total amount. It is evident mat conceptually and functionally equivalent variants fall inside the protection field of the present invention.
For example, it is possible to use a thermically conductive paste 30 also in cases wherein the resistive sheet 22 is placed over the flaps 16 obtained by L- bending the ends 14a of the cooling plates 14.
Claims
1. Device for the rapid defrosting of the surface of evaporators comprising pellicular resistive means (22), said evaporator (10) including a number of cooling plates (14) spaced parallelly spaced apart therebetween having openings (18) in which a cooling coil (20) is inserted, characterized in that said pellicular resistive means comprise at least one PTF resistive sheet (22), said at least one PTF resistive sheet (22) and said cooling plates (14) being physically in contact therebetween, that said physical contact is located in a number of areas and that, at said physical contact areas, surfaces (16,30) of thermal exchange are provided so as to increase the efficiency of heat transmission from said at least one PTF resistive sheet (22) to said cooling plates (14).
2. Device for the rapid defrosting of the surface of evaporators according to claim 1, characterized in that, at said physical contact areas, said surfaces (16,30) of thermal exchange are made on perpendicular flaps (16) located at the edges (14a) of the cooling plates (14), said perpendicular flaps (16) being substantially located in a plane and said at least one PTF resistive sheet (22) being placed over the perpendicular flaps (16).
3. Device for the rapid defrosting of the surface of evaporators according to claim 2, characterized in that said perpendicular flaps (16) are obtained by
L-bending the adjacent edges (14a) of said cooling plates (14).
4. Device for the rapid defrosting of the surface of evaporators according to claim 3, characterized in that the number of the cooling plates (14), whose edges (14a) are L-bent, are superior to that of 30% of the total amount.
5. Device for me rapid defrosting of me surface of evaporators according to claim 2 or 3, characterized in that said perpendicular flaps (16) extend to a length equal to the length of the cooling plates (14) and to a width equal to at least two times the width of the cooling plates (14).
6. Device for the rapid defrosting of the surface of evaporators according to claim 1, characterized in that said surfaces of thermal exchange comprise a thermally conductive paste (30) placed between said cooling plates (14) and said at least one PTF resistive sheet (22).
7. Device for the rapid defrosting of the surface of evaporators according to claim 6, characterized in that said thermally conductive paste (30) is adhesive.
8. Device for the rapid defrosting of of the surface of evaporators according to claim 6, characterized in that said thermally conductive paste (30) is electrically insulated.
9. Device for the rapid defrosting of the surface of evaporators according to claim 6, characterized in that said at least one PTF resistive sheet (22) is placed on said bent flaps (16) by interposing said thermally conductive paste (30).
10. Device for the rapid defrosting of the surface of evaporators according to claim 1, characterized in that said surfaces of thermal exchange consist of cooling plates (14).
11. Device for the rapid defrosting of the surface of evaporators according to claim 10, characterized in that said at least one PTF resistive sheet (122) has a dimension equal to or inferior to that of the cooling plates (14), each of said at least one PTF resistive sheet (122) being placed over the surface of the cooling plates (14), said PTF resistive sheets (122) having openings
(124) so that the sheets (122) do not cover the openings (18) of the cooling plates (14).
12. Device for the rapid defrosting of the surface of evaporators according to claim 11, characterized in that said at least one PTF resistive sheet (122) is applied to at least 30% of the number of the cooling plates (14).
13. Device for the rapid defrosting of the surface of evaporators according to claim 1, characterized in that said pellicular resistive means comprise at least one PTF resistive sheet (222) having a comb-shape whose prongs (224) are inserted in said openings ( 18) of said cooling plates (14).
14. Device for the rapid defrosting of the surface of evaporators according to claim 13, characterized in that said at least one PTF resistive sheet (222) is in such that a number of prongs (224) are inserted into at least 30% of the openings (18) of said cooling plates (14).
15. Device for the rapid defrosting of the surface of evaporators according to any of the previous claims, characterized in that said at least one PTF resistive sheet (22,122,222) has PTC characteristics.
16. Evaporator provided with the device as claimed in any of the previous claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02741166A EP1407203A1 (en) | 2001-07-17 | 2002-05-30 | A device for the rapid defrosting of the surface of evaporators |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITVE01A000033 | 2001-07-17 | ||
| ITVE20010033 ITVE20010033A1 (en) | 2001-07-17 | 2001-07-17 | DEVICE FOR QUICK DEFROSTING OF EVAPORATORS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003008880A1 true WO2003008880A1 (en) | 2003-01-30 |
Family
ID=11461082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2002/000349 Ceased WO2003008880A1 (en) | 2001-07-17 | 2002-05-30 | A device for the rapid defrosting of the surface of evaporators |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1407203A1 (en) |
| IT (1) | ITVE20010033A1 (en) |
| WO (1) | WO2003008880A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1467165A1 (en) * | 2003-04-08 | 2004-10-13 | Lg Electronics Inc. | Defroster for heat exchanger and fabrication method thereof |
| EP1538411A2 (en) | 2003-12-01 | 2005-06-08 | Dometic Sweden AB | Heat exchanger arrangement |
| US7237402B2 (en) | 2003-12-01 | 2007-07-03 | Dometic Sweden Ab | Refrigerator and method |
| WO2012010422A3 (en) * | 2010-07-23 | 2012-04-12 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration device with a defrosting device |
| WO2013076004A3 (en) * | 2011-11-24 | 2013-09-26 | BSH Bosch und Siemens Hausgeräte GmbH | Evaporator for a refrigeration device and refrigeration device |
| EP4102154A1 (en) * | 2021-06-08 | 2022-12-14 | Hauser GmbH | Heat exchanger for a refrigerated cabinet |
| CN117989797A (en) * | 2022-10-31 | 2024-05-07 | 青岛海尔电冰箱有限公司 | Defrosting heating device for refrigerator and refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1284419A (en) * | 1961-03-21 | 1962-02-09 | Siemens Elektrogeraete Gmbh | evaporator for refrigeration machines equipped with a defrosting device which can be electrically heated |
| DE1816640A1 (en) | 1968-12-23 | 1970-07-02 | Robert Steger | Electrically operated defrosting device for refrigerators, freezers and other cooling devices, double insulated with wireless heating conductors |
| US4432211A (en) * | 1980-11-17 | 1984-02-21 | Hitachi, Ltd. | Defrosting apparatus |
| EP0918339A2 (en) * | 1997-11-06 | 1999-05-26 | Acheson Industries, Inc. | Electrical device containing positive temperature coefficient resistor composition and method of manufacturing the device |
| EP1004835A2 (en) * | 1998-11-27 | 2000-05-31 | Whirlpool Corporation | Device for rapidly defrosting a refrigerator compartment, such as a freezer compartment or the like |
-
2001
- 2001-07-17 IT ITVE20010033 patent/ITVE20010033A1/en unknown
-
2002
- 2002-05-30 EP EP02741166A patent/EP1407203A1/en not_active Withdrawn
- 2002-05-30 WO PCT/IT2002/000349 patent/WO2003008880A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1284419A (en) * | 1961-03-21 | 1962-02-09 | Siemens Elektrogeraete Gmbh | evaporator for refrigeration machines equipped with a defrosting device which can be electrically heated |
| DE1816640A1 (en) | 1968-12-23 | 1970-07-02 | Robert Steger | Electrically operated defrosting device for refrigerators, freezers and other cooling devices, double insulated with wireless heating conductors |
| US4432211A (en) * | 1980-11-17 | 1984-02-21 | Hitachi, Ltd. | Defrosting apparatus |
| EP0918339A2 (en) * | 1997-11-06 | 1999-05-26 | Acheson Industries, Inc. | Electrical device containing positive temperature coefficient resistor composition and method of manufacturing the device |
| EP1004835A2 (en) * | 1998-11-27 | 2000-05-31 | Whirlpool Corporation | Device for rapidly defrosting a refrigerator compartment, such as a freezer compartment or the like |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1467165A1 (en) * | 2003-04-08 | 2004-10-13 | Lg Electronics Inc. | Defroster for heat exchanger and fabrication method thereof |
| US7030344B2 (en) | 2003-04-08 | 2006-04-18 | Lg Electronics Inc. | Defroster for heat exchanger and fabrication method thereof |
| EP1538411A2 (en) | 2003-12-01 | 2005-06-08 | Dometic Sweden AB | Heat exchanger arrangement |
| US7036332B2 (en) | 2003-12-01 | 2006-05-02 | Dometic Sweden Ab | Heat exchanger arrangement |
| US7237402B2 (en) | 2003-12-01 | 2007-07-03 | Dometic Sweden Ab | Refrigerator and method |
| WO2012010422A3 (en) * | 2010-07-23 | 2012-04-12 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration device with a defrosting device |
| WO2013076004A3 (en) * | 2011-11-24 | 2013-09-26 | BSH Bosch und Siemens Hausgeräte GmbH | Evaporator for a refrigeration device and refrigeration device |
| CN104364596A (en) * | 2011-11-24 | 2015-02-18 | Bsh博世和西门子家用电器有限公司 | Evaporator for a refrigeration device and refrigeration device |
| EP4102154A1 (en) * | 2021-06-08 | 2022-12-14 | Hauser GmbH | Heat exchanger for a refrigerated cabinet |
| CN117989797A (en) * | 2022-10-31 | 2024-05-07 | 青岛海尔电冰箱有限公司 | Defrosting heating device for refrigerator and refrigerator |
| WO2024093781A1 (en) * | 2022-10-31 | 2024-05-10 | 青岛海尔电冰箱有限公司 | Defrosting heating device for refrigerator, and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1407203A1 (en) | 2004-04-14 |
| ITVE20010033A1 (en) | 2003-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100600911B1 (en) | Electric Heating for Motor Vehicles | |
| EP2290307B1 (en) | Evaporator with defrost heater having strip type plane heating elements | |
| KR970005097B1 (en) | Positive temperature coefficient thermistor device for a heating apparatus | |
| AU2002323724B2 (en) | Defroster for Evaporator of Refrigerator | |
| WO2003008880A1 (en) | A device for the rapid defrosting of the surface of evaporators | |
| EP1004835B1 (en) | Device for rapidly defrosting a refrigerator compartment, such as a freezer compartment or the like | |
| KR20140076578A (en) | Insulated heating module for a supplemental heating device | |
| KR101037651B1 (en) | Defrost Face Heater | |
| JP4796800B2 (en) | Evaporator | |
| CN103459952B (en) | Evaporator assemblies for refrigerating appliance | |
| KR101023674B1 (en) | Defroster using surface heater | |
| KR100935918B1 (en) | Defrost Face Heater | |
| JP3812532B2 (en) | Capacitor with heat sink | |
| JPH09213458A (en) | Heater unit | |
| KR101123079B1 (en) | Defrost heater applicable to horizontal type evaporator and method for manufacturing the same | |
| JPS6396886A (en) | Defrosting heater | |
| WO2024093781A1 (en) | Defrosting heating device for refrigerator, and refrigerator | |
| CN215527515U (en) | SMA silk thread heat radiation structure and circuit breaker | |
| KR0129535Y1 (en) | Defrosting apparatus of a refrigerator | |
| US12471187B2 (en) | Electronic interface housing for controlling an electrical heating device | |
| JPS6394583A (en) | Defrosting heater | |
| JPS6370065A (en) | Heating element device for defrostation | |
| JP2527692B2 (en) | See-through board | |
| KR102477286B1 (en) | A heater for vehicles | |
| JPH06341756A (en) | See-through plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2002741166 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: 2002741166 Country of ref document: EP |
|
| REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
| NENP | Non-entry into the national phase |
Ref country code: JP |
|
| WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |