WO2003106902A1 - Verdampfer für ein kältegerät - Google Patents
Verdampfer für ein kältegerät Download PDFInfo
- Publication number
- WO2003106902A1 WO2003106902A1 PCT/EP2003/005864 EP0305864W WO03106902A1 WO 2003106902 A1 WO2003106902 A1 WO 2003106902A1 EP 0305864 W EP0305864 W EP 0305864W WO 03106902 A1 WO03106902 A1 WO 03106902A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- evaporator
- ice
- layer
- refrigeration device
- coating
- Prior art date
Links
Classifications
-
- 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
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
Definitions
- the present invention relates to an evaporator for a refrigerator.
- the surface of such an evaporator when supplied with refrigerant, reaches temperatures below 0 ° C. Air humidity from the interior of the refrigerator can therefore condense and freeze on the surface of the evaporator.
- the temperature of the evaporator varies over time, depending on whether it is supplied with refrigerant or not, this layer of ice will expand and contract periodically over time. In the process, tensions build up between the ice layer and the evaporator underneath, which ultimately leads to a jerky shift of the ice layer. The resulting cracking noises are perceived as annoying.
- the object of the present invention is to provide an evaporator for a refrigeration device in which these cracking noises are reduced.
- the object is achieved in that the surface of the evaporator, on which ice could form, is provided with a hydrophobic coating.
- Such a coating is effective to delay the formation of the first ice crystals on an ice-free evaporator and thus to extend the time required for an amount of ice to have accumulated on the evaporator after a defrosting process. That is strong enough to cause crackling noises.
- Another effect of the hydrophobic layer is that it prevents the formation of a homogeneous layer of frost on the surface of the evaporator. Instead, icing begins on a small number of unavoidable germs on the surface of the evaporator. The ice pearls that form there grow more or less uniformly over their entire surface and thus reach a considerable thickness before they start to grow together. This means that a large amount of ice can collect on the evaporator according to the invention in comparison with a non-hydrophobic evaporator, before a coherent layer is created that is capable of generating crackling noises.
- Another advantage of the island growth of the ice layer is that surface areas of the evaporator remain ice-free for a relatively long time and enable an effective heat exchange between the refrigerant and the surroundings of the evaporator even if a considerable amount of ice has already accumulated on other areas of the evaporator surface.
- the time interval between two defrosting phases can therefore be selected to be longer than in the case of a non-hydrophobic evaporator, which for the user of a refrigeration device equipped with an evaporator according to the invention includes an increase in comfort and a reduction in the energy consumption of the refrigeration device and thus its operating costs.
- the hydrophobic coating can preferably contain a silicone as a hydrophobizing component.
- the coating can be applied as a solidifying lacquer layer or as an oil layer.
- the oil layer has the particular advantage that, since it does not become solid in itself, it favors the displaceability of the ice pearls that form on the surface of the evaporator, so that even with complete icing of the evaporator with a layer thickness that is used in a conventional evaporator Generation of cracking noises is sufficient, these are reduced in the evaporator according to the invention, since for a shift of the ice crust with respect to the evaporator no high thermal stresses need to be built up, which discharge in loud crackling noises, but a much lower voltage is sufficient to relate the ice layer to slide on the evaporator or possibly even a continuous sliding movement of the ice layer on the evaporator occurs.
- the evaporator according to the invention is preferably constructed as a finned evaporator which is suitable for use in a circulating air refrigerator or freezer.
- the attached figure shows a schematic view of a partially iced section of a finned evaporator 4 according to the invention.
- the finned evaporator 4 comprises a tube 1 through which refrigerant flows during operation.
- a lamella 2 wound helically.
- condensation nuclei In order for air moisture to condense on the finned evaporator 4, surface areas must be present on it where the condensation is energetically favorable. Such places are mostly condensation nuclei in the form of dust particles, surface discontinuities or the like, which are inevitably present on the surface of the lamella evaporator, but only make up a very small part of it. As shown in FIG. 1, a large number of compact ice pearls 3 form on these condensation nuclei during operation of the lamella evaporator 3.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03759911A EP1518078B1 (de) | 2002-06-18 | 2003-06-04 | Verdampfer für ein kältegerät |
AU2003232849A AU2003232849A1 (en) | 2002-06-18 | 2003-06-04 | Evaporator for a refrigeration device |
DE50303711T DE50303711D1 (de) | 2002-06-18 | 2003-06-04 | Verdampfer für ein kältegerät |
US11/017,614 US20050138959A1 (en) | 2002-06-18 | 2004-12-20 | Evaporator for a refrigeration device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10227135.6 | 2002-06-18 | ||
DE10227135A DE10227135A1 (de) | 2002-06-18 | 2002-06-18 | Verdampfer für ein Kältegerät |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/017,614 Continuation US20050138959A1 (en) | 2002-06-18 | 2004-12-20 | Evaporator for a refrigeration device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003106902A1 true WO2003106902A1 (de) | 2003-12-24 |
Family
ID=29719201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/005864 WO2003106902A1 (de) | 2002-06-18 | 2003-06-04 | Verdampfer für ein kältegerät |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1518078B1 (de) |
CN (1) | CN1313787C (de) |
AT (1) | ATE329214T1 (de) |
AU (1) | AU2003232849A1 (de) |
DE (2) | DE10227135A1 (de) |
ES (1) | ES2266858T3 (de) |
PL (1) | PL202378B1 (de) |
RU (1) | RU2306498C2 (de) |
WO (1) | WO2003106902A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010020536A1 (de) * | 2008-08-22 | 2010-02-25 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät und verdampfer |
WO2017050418A1 (de) * | 2015-09-23 | 2017-03-30 | Linde Aktiengesellschaft | Wärmeübertragungsrohr, luftbeheizter verdampfer und verfahren zum herstellen eines wärmeübertragungsrohrs |
WO2022026279A1 (en) * | 2020-07-27 | 2022-02-03 | Rheem Manufacturing Company | Evaporator for water heating device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN208652988U (zh) * | 2018-07-13 | 2019-03-26 | 佛山嘉森电器有限公司 | 一种高效低噪翅片蒸发器 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868830A (en) * | 1973-08-31 | 1975-03-04 | Nasa | Condensate removal device for heat exchanger |
JPH03244680A (ja) * | 1990-02-22 | 1991-10-31 | Matsushita Refrig Co Ltd | 撥水性コーティング用組成物及び撥水性コーティング用組成物を用いた熱交換器 |
EP0485801A1 (de) * | 1990-11-13 | 1992-05-20 | Matsushita Refrigeration Company | Wärmetauscher |
JPH09113181A (ja) * | 1995-10-19 | 1997-05-02 | Kobe Steel Ltd | 熱交換器用アルミニウム部材及びその製造方法 |
EP0903389A1 (de) * | 1996-05-31 | 1999-03-24 | Toto Ltd. | Antifouling elemente und antifouling überzugzusammensetzung |
JPH11264632A (ja) * | 1998-03-19 | 1999-09-28 | Sanyo Electric Co Ltd | 熱交換器およびその製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1027835C (zh) * | 1990-11-17 | 1995-03-08 | 衡阳市科技开发服务中心 | 套装式蒸发器的制作方法及其产品 |
CN1127877A (zh) * | 1995-01-26 | 1996-07-31 | 大连海事大学 | 制冷蒸发器 |
CN1103904C (zh) * | 1996-05-10 | 2003-03-26 | 株式会社日立制作所 | 户外热交换单元及使用该单元的空调器 |
-
2002
- 2002-06-18 DE DE10227135A patent/DE10227135A1/de not_active Withdrawn
-
2003
- 2003-06-04 CN CNB03814199XA patent/CN1313787C/zh not_active Expired - Fee Related
- 2003-06-04 AU AU2003232849A patent/AU2003232849A1/en not_active Abandoned
- 2003-06-04 ES ES03759911T patent/ES2266858T3/es not_active Expired - Lifetime
- 2003-06-04 PL PL372050A patent/PL202378B1/pl not_active IP Right Cessation
- 2003-06-04 EP EP03759911A patent/EP1518078B1/de not_active Expired - Lifetime
- 2003-06-04 WO PCT/EP2003/005864 patent/WO2003106902A1/de not_active Application Discontinuation
- 2003-06-04 AT AT03759911T patent/ATE329214T1/de not_active IP Right Cessation
- 2003-06-04 RU RU2004135374/06A patent/RU2306498C2/ru not_active IP Right Cessation
- 2003-06-04 DE DE50303711T patent/DE50303711D1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868830A (en) * | 1973-08-31 | 1975-03-04 | Nasa | Condensate removal device for heat exchanger |
JPH03244680A (ja) * | 1990-02-22 | 1991-10-31 | Matsushita Refrig Co Ltd | 撥水性コーティング用組成物及び撥水性コーティング用組成物を用いた熱交換器 |
EP0485801A1 (de) * | 1990-11-13 | 1992-05-20 | Matsushita Refrigeration Company | Wärmetauscher |
JPH09113181A (ja) * | 1995-10-19 | 1997-05-02 | Kobe Steel Ltd | 熱交換器用アルミニウム部材及びその製造方法 |
EP0903389A1 (de) * | 1996-05-31 | 1999-03-24 | Toto Ltd. | Antifouling elemente und antifouling überzugzusammensetzung |
JPH11264632A (ja) * | 1998-03-19 | 1999-09-28 | Sanyo Electric Co Ltd | 熱交換器およびその製造方法 |
Non-Patent Citations (3)
Title |
---|
DATABASE WPI Section Ch Week 199150, Derwent World Patents Index; Class A14, AN 1991-365143, XP002253824 * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 09 30 September 1997 (1997-09-30) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 14 22 December 1999 (1999-12-22) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010020536A1 (de) * | 2008-08-22 | 2010-02-25 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät und verdampfer |
DE102008041480A1 (de) | 2008-08-22 | 2010-02-25 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät und Verdampfer |
WO2017050418A1 (de) * | 2015-09-23 | 2017-03-30 | Linde Aktiengesellschaft | Wärmeübertragungsrohr, luftbeheizter verdampfer und verfahren zum herstellen eines wärmeübertragungsrohrs |
WO2022026279A1 (en) * | 2020-07-27 | 2022-02-03 | Rheem Manufacturing Company | Evaporator for water heating device |
US11519671B2 (en) | 2020-07-27 | 2022-12-06 | Rheem Manufacturing Company | Evaporator for water heating device |
Also Published As
Publication number | Publication date |
---|---|
ATE329214T1 (de) | 2006-06-15 |
RU2004135374A (ru) | 2005-08-27 |
EP1518078A1 (de) | 2005-03-30 |
CN1313787C (zh) | 2007-05-02 |
AU2003232849A1 (en) | 2003-12-31 |
PL202378B1 (pl) | 2009-06-30 |
RU2306498C2 (ru) | 2007-09-20 |
DE10227135A1 (de) | 2004-01-08 |
EP1518078B1 (de) | 2006-06-07 |
DE50303711D1 (de) | 2006-07-20 |
PL372050A1 (en) | 2005-07-11 |
CN1662782A (zh) | 2005-08-31 |
ES2266858T3 (es) | 2007-03-01 |
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