EP1517106A1 - Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée - Google Patents

Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée Download PDF

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Publication number
EP1517106A1
EP1517106A1 EP03021387A EP03021387A EP1517106A1 EP 1517106 A1 EP1517106 A1 EP 1517106A1 EP 03021387 A EP03021387 A EP 03021387A EP 03021387 A EP03021387 A EP 03021387A EP 1517106 A1 EP1517106 A1 EP 1517106A1
Authority
EP
European Patent Office
Prior art keywords
condenser
water
refrigeration apparatus
pan
sleeve
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.)
Withdrawn
Application number
EP03021387A
Other languages
German (de)
English (en)
Inventor
Luigi Paroni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP03021387A priority Critical patent/EP1517106A1/fr
Publication of EP1517106A1 publication Critical patent/EP1517106A1/fr
Withdrawn legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1412—Removal by evaporation using condenser heat or heat of desuperheaters

Definitions

  • the present invention refers to an improved kind of refrigeration apparatus, which comprises an evaporator and, in general, a refrigerating circuit adapted to operate according to well-known principles and in well-known manners.
  • a largely known method consists in making use, to heat up the water in the evaporation pan, of a section of the pipe of the condenser that is usually arranged along the outer surface of the rear wall of the refrigeration appliance.
  • a section of said condenser pipe is extended and given a suitable downwards shape, so that the lower outermost end portion thereof dips into the evaporation pan and, as a result, the defrost water collecting thereinto is heated up naturally and, therefore, caused to evaporate.
  • a refrigeration apparatus preferably a household refrigerator, with an evaporator equipped with a defrost heater and an outside pan for the collection and evaporation of defrost water, which is provided with specific devices adapted to favour such evaporation of the defrost water contained in said pan, and which does away with all of the afore-mentioned prior-art drawbacks.
  • a refrigeration apparatus comprises an evaporator (not shown), below which there is provided an arrangement for collecting the defrost water dropping from the evaporator itself, as well as a circuit 2 (shown in part only) for conveying said defrost water into an external pan 3; this pan may or may not be associated to the compressor, so that this circumstance is practically of no relevance whatsoever to the purposes of the present invention.
  • said refrigeration apparatus is provided with an externally mounted condenser 4, which is made of preferably tubular elements of a per sé known kind.
  • a section 5 of said condenser 4 which is situated down below, i.e. on the lower side of the same condenser, as this is best shown in Figure 1, is extended and shaped so as to be able to dip into and pass through said pan 3, so that, when the same pan fills up with thawing water, it becomes submerged in the water so collecting thereinto.
  • this extending section 5 of condenser pipe is not bare, but is rather covered by an impermeable sheathing or protective sleeve 6 provided all over the required length and in the necessary position, in such a manner as to ensure that no portion of this extended section 5 of condenser pipe that is likely to be covered by the water in the pan can actually come into contact with the same water.
  • said extended section 5 of condenser pipe is protected by a tubular member, which may be made of any suitable material and be applied using any suitable method, as far as it is able to reliably ensure total protection against any possible contamination or contact with the water in the pan.
  • Said protective sleeve 6 can be effectively made using elastomeric materials which, thanks to the elasticity thereof, would at the same time automatically keep said sleeve firmly in the desired position.
  • said sleeve can be also obtained by applying an impermeable protective coating on said section 5 all over the length thereof, eg. by applying an external protective paint coating or dipping said section 5 of condenser pipe into a bath of appropriate substances which, upon drying or hard-setting, are effective in ensuring full impermeability thereof to outside agents.
  • said protective sleeve 6 is obtained with the use of an appropriately long aluminium tubing that is applied externally by putting it on the pipe 5 prior to its being given its desired or required shape.
  • the advantage deriving from the use of such a material lies in the fact that aluminium does not oxidize and, therefore, is not attackable by water.
  • aluminium is a sufficiently low-cost and easily processable material; it features an adequate plasticity at reduced thickness, so that it is easily deformed into shape, and above all has an excellent heat conductivity, so that it does not constitute any hindrance to a good heat transfer from the condenser to the water in the pan.
  • said extended condenser pipe section 5 is given a wave-like shape, so as to increase the submerged (although not fully wetted) surface area thereof, without having to increase the size of the pan itself.
  • the extended condenser pipe section 5 is protected by an aluminium sheath, the latter must be of course put on the same pipe section 5 prior to its being bent into the wave-like contour thereof, but this bending process does not anyway constitute any problem at all, considering the high deformability and toughness of aluminium.
  • said aluminium sleeve 6 is applied so as to be in close contact with the outer surface of said section 5 of the condenser pipe.
  • This may be obtained with the use of various techniques known in the art; for instance, and with particular reference to Figure 5, upon having so protected the inner tube 5 through the application of the sleeve 6 having an adequately larger diameter with respect thereto, the latter is calked or rolled along a directrix thereof extending parallel to the axis O of the same tube, while drawing out part of the material of said sleeve 6 laterally so as to form, with such a material, a kind of side lip 7 that would anyway be of no practical hindrance at all.
  • Said rolling and the resulting shrinkage of the material of the sleeve 6 therefore cause the diameter thereof to be reduced so as to bring said sleeve closer to said section 5 of condenser pipe and, preferably, to establish a tight fit of said sleeve against said section 5 of condenser pipe, thereby achieving the desired improvement in heat conductivity.

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)
  • Removal Of Water From Condensation And Defrosting (AREA)
EP03021387A 2003-09-22 2003-09-22 Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée Withdrawn EP1517106A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03021387A EP1517106A1 (fr) 2003-09-22 2003-09-22 Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03021387A EP1517106A1 (fr) 2003-09-22 2003-09-22 Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée

Publications (1)

Publication Number Publication Date
EP1517106A1 true EP1517106A1 (fr) 2005-03-23

Family

ID=34178470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03021387A Withdrawn EP1517106A1 (fr) 2003-09-22 2003-09-22 Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée

Country Status (1)

Country Link
EP (1) EP1517106A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107340A2 (fr) * 2007-03-07 2008-09-12 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique à échangeur de chaleur à deux étages
WO2009152862A1 (fr) * 2008-06-20 2009-12-23 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique avec cuvette d'évaporation
DE102018218019A1 (de) * 2018-10-22 2020-04-23 BSH Hausgeräte GmbH Verdunstungsanordnung für ein Kältegerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04302981A (ja) * 1991-03-29 1992-10-26 Hitachi Ltd 冷蔵庫
JP2002081846A (ja) * 2000-08-31 2002-03-22 Matsushita Refrig Co Ltd 冷却ユニット
US6363736B1 (en) * 2001-03-21 2002-04-02 White Consolidated Industries, Inc. Condensate evaporator pan
JP2003172576A (ja) * 2001-12-05 2003-06-20 Fujitsu General Ltd 冷蔵庫

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04302981A (ja) * 1991-03-29 1992-10-26 Hitachi Ltd 冷蔵庫
JP2002081846A (ja) * 2000-08-31 2002-03-22 Matsushita Refrig Co Ltd 冷却ユニット
US6363736B1 (en) * 2001-03-21 2002-04-02 White Consolidated Industries, Inc. Condensate evaporator pan
JP2003172576A (ja) * 2001-12-05 2003-06-20 Fujitsu General Ltd 冷蔵庫

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 117 (M - 1378) 11 March 1993 (1993-03-11) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 07 3 July 2002 (2002-07-03) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 10 8 October 2003 (2003-10-08) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107340A2 (fr) * 2007-03-07 2008-09-12 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique à échangeur de chaleur à deux étages
WO2008107340A3 (fr) * 2007-03-07 2008-11-27 Bsh Bosch Siemens Hausgeraete Appareil frigorifique à échangeur de chaleur à deux étages
WO2009152862A1 (fr) * 2008-06-20 2009-12-23 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique avec cuvette d'évaporation
DE102018218019A1 (de) * 2018-10-22 2020-04-23 BSH Hausgeräte GmbH Verdunstungsanordnung für ein Kältegerät

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