EP2304355A1 - Appareil frigorifique avec cuvette d'évaporation - Google Patents

Appareil frigorifique avec cuvette d'évaporation

Info

Publication number
EP2304355A1
EP2304355A1 EP08761258A EP08761258A EP2304355A1 EP 2304355 A1 EP2304355 A1 EP 2304355A1 EP 08761258 A EP08761258 A EP 08761258A EP 08761258 A EP08761258 A EP 08761258A EP 2304355 A1 EP2304355 A1 EP 2304355A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger plate
evaporation tray
pressure section
evaporation
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Withdrawn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
EP08761258A
Other languages
German (de)
English (en)
Inventor
Wolfgang Nuiding
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2304355A1 publication Critical patent/EP2304355A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • 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

  • Refrigerating appliances in particular domestic refrigerators, such. Refrigerators, freezers, etc. generally have an evaporation tray in which condensate that collects on an evaporator of the appliance collects. By the evaporation tray is located in the vicinity of a compressor, it is heated by the waste heat, so that the condensation evaporates from the shell.
  • the non-prepublished German patent application 10 2006 061 084.9 describes a refrigeration device in which an air-cooled condenser upstream of a dipping into a evaporation tray pipe section to heat in the evaporation tray collected, originating from the interior of the refrigerator condensate.
  • Object of the present invention is to provide a refrigeration appliance, in particular household refrigeration appliance, which is despite high energy efficiency in a position to evaporate in a evaporation tray collecting condensate in sufficient quantity.
  • the object is achieved by arranging at least one heat exchanger plate which is thermally connected to the high-pressure section of the refrigerant circuit at least partially within the evaporation tray in a refrigeration device with a refrigerant circuit and an evaporation tray arranged in a high-pressure section and a low-pressure section.
  • the plate allows the heat exchange with the water of the evaporation tray on a large surface, so that the water can be heated efficiently, even if only during a small part of the operating time of the refrigerator warm refrigerant in the high pressure section of the refrigerant circuit circulates.
  • the heat exchanger plate is preferably oriented substantially horizontally.
  • a gap formed between an edge of the heat exchanger plate and a sidewall of the evaporation tray also allows heated water at the bottom of the heat exchanger plate to rise to the water surface and cool there by evaporation.
  • One or more passages may conveniently be formed in the heat exchanger plate to allow the rising of water heated at the bottom of the heat exchanger plate away from the outer edge of the plate.
  • One or more adjacent to an edge of the heat exchanger plate deflected from the horizontal areas favor the convection of the water and thus the heat transfer from the heat exchanger plate to the water.
  • the deflected regions may be located on either an outer edge of the plate or on edges of passages formed away from the outer edge in the plate.
  • the heat exchanger plate is thermally connected upstream of a condenser with the high pressure section.
  • compressed and heated refrigerant flows through the line section connected to the heat exchanger plate in front of the condenser.
  • the heat exchanger plate may be thermally connected downstream of the condenser with the high-pressure section for an expedient development.
  • the heat exchanger plate is exposed in this case, although a lower flow temperature of the refrigerant, so that less heat is released in total in the evaporation tray;
  • the advantage of this arrangement is that by the contact with the water of the evaporation tray on a short line path, a very intense heat exchange is possible, so that the refrigerant reaches the low pressure section with a lower temperature than in the case of the arrangement previously described with upstream heat exchanger plate.
  • the low inlet temperature in the low pressure section in turn has a favorable effect on the efficiency of the entire device.
  • Fig. 1 is a schematic perspective view of an evaporation tray according to a first embodiment of the invention
  • Fig. 2 is a view similar to FIG. 1 view according to a second embodiment of the invention
  • Fig. 3 is a section through an evaporation tray according to a third
  • Fig. 4 is a heat exchanger plate according to a fourth embodiment of
  • FIG. 5 is a block diagram of a first refrigeration device according to the invention.
  • Fig. 6 is a block diagram of a second refrigeration device according to the invention.
  • Fig. 1 shows a perspective view of an evaporation tray 1 of a refrigerator, which is conventionally arranged in the base region of a refrigerator adjacent to a compressor, not shown in FIG. 1, to be heated by its waste heat.
  • a high-pressure refrigerant line 2 extending from the compressor extends over the evaporation tray 1, and a heat exchanger plate 3, which is in intimate thermal communication with the refrigerant line 2 along its upper edge, for example, by soldering, dips into the evaporation tray 1 from above Heat of the circulating in the refrigerant line 2 refrigerant to give water in the evaporation tray 1. Heated water rises on both sides along the surfaces of the heat exchanger plate 3 and spreads over the surface of the water in the evaporation pan 1.
  • the vertical orientation of the heat exchanger plate 3 favors the formation of convection in the water of the evaporation pan 1, so that the temperature of the water immediately at the water surface can be significantly higher than in deeper water layers. This favors the evaporation.
  • the contact area between the heat exchanger plate 3 and water increases, but conversely, the area on which the sheet 3 loses heat to the surrounding air, is smaller, increases the evaporation performance of the shell of Fig. 1 with increasing water level. The tendency of the shell to overflow is therefore low.
  • the refrigerant line 2 routed across the evaporation tray 1 has a bent course, wherein a center piece 4 of the line 2 dips into the tray 1 and usually also into water contained therein.
  • an upwardly projecting heat exchanger plate could be attached to the center piece 4.
  • the arrangement shown in Fig. 2 is provided with a horizontal heat exchanger plate 5 which extends horizontally in opposite directions from the central portion 4 of the conduit.
  • the evaporation tray 1 may generally have a considerable width and depth but only a small height, it will be appreciated that the horizontally oriented heat exchanger plate 5 will heat exchange with the water of the tray
  • a gap 7 between the outer edges of the heat exchanger plate 5 and surrounding side walls 6 of the evaporation tray 1 allows heated on the underside of the heat exchanger plate 5 heated water to the water surface above the heat exchanger plate 5 and deliver there heat by evaporation.
  • Heat exchanger plate 5 to promote the water surface is shown in Fig. 4, which shows a perspective view of a variant of the heat exchanger plate 5, mounted on the refrigerant line 2 ,.
  • FIG. 5 shows a block diagram of the refrigerant circuit of a refrigerator according to a first embodiment of the invention.
  • the evaporation tray 1 with the refrigerant line 2 running through it and the heat exchanger plate 5 is arranged here immediately after a compressor 10. Therefore, the heat exchanger plate 5 reaches a high temperature, and a sufficient evaporation rate in the evaporation tray 1 can be ensured even with scarce dimensions of the shell 1 and the heat exchanger plate 5.
  • the refrigerant Upon reaching a downstream of the evaporation tray 1 arranged condenser 11, the refrigerant is thus already cooled a distance.
  • the temperature difference between the refrigerant at the inlet of the condenser 11 and the environment is therefore lower than in a refrigerator without upstream evaporation tray 1, so that a condenser with smaller dimensions is sufficient to reach the condenser outlet the same refrigerant temperature as in a device in which no precooling the refrigerant takes place in the evaporation tray.
  • a throttle point 12 and an evaporator 13 Connected to the outlet of the condenser 11 in the familiar manner, a throttle point 12 and an evaporator 13 to close the refrigerant circuit.
  • the condenser 1 1 is arranged immediately after the high-pressure outlet of the compressor 10, and the evaporation tray 1 is located between the outlet of the condenser 1 1 and the throttle point 12. Da the refrigerant on reaching the evaporation tray 1 is already considerably cooler than in the case of the previous embodiment, a larger area of the heat exchanger plate 5 is required for feeding a given heating power into the water of the evaporation tray 1 as in the embodiment of FIG. 5. Conversely, however be used much more compact condenser 1 1, since the output temperature in the embodiment of FIG. 6 may be significantly higher than in the case of FIG. 5.

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)

Abstract

L'invention concerne un appareil frigorifique, en particulier un appareil frigorifique domestique, avec un circuit de fluide frigorifique comprenant une partie à haute pression et une partie à basse pression et avec une cuvette d'évaporation (1). Au moins une plaque d'échange thermique (5) reliée thermiquement à la partie à haute pression du circuit de fluide frigorifique est disposée au moins partiellement à l'intérieur de la cuvette d'évaporation (1).
EP08761258A 2008-06-20 2008-06-20 Appareil frigorifique avec cuvette d'évaporation Withdrawn EP2304355A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/057843 WO2009152862A1 (fr) 2008-06-20 2008-06-20 Appareil frigorifique avec cuvette d'évaporation

Publications (1)

Publication Number Publication Date
EP2304355A1 true EP2304355A1 (fr) 2011-04-06

Family

ID=40265980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08761258A Withdrawn EP2304355A1 (fr) 2008-06-20 2008-06-20 Appareil frigorifique avec cuvette d'évaporation

Country Status (2)

Country Link
EP (1) EP2304355A1 (fr)
WO (1) WO2009152862A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011007414A1 (de) * 2011-04-14 2012-10-18 BSH Bosch und Siemens Hausgeräte GmbH Verdunstungsvorrichtung für ein Kältegerät
DE102018201786A1 (de) 2018-02-06 2019-08-08 BSH Hausgeräte GmbH Kältegerät mit Verdunstungsschale
DE102019200631A1 (de) 2019-01-18 2020-07-23 BSH Hausgeräte GmbH Kältegerät
DE102019200859A1 (de) 2019-01-24 2020-07-30 BSH Hausgeräte GmbH Kältegerät
WO2024119250A1 (fr) * 2022-12-05 2024-06-13 Nidec Global Appliance Brasil Ltda. Unité de condensation pourvue d'un bac à eau amovible

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09269180A (ja) * 1996-03-29 1997-10-14 Toshiba Corp 蒸発パイプに犠牲アノードを備えた冷蔵庫
JPH1019449A (ja) * 1996-07-05 1998-01-23 Sanyo Electric Co Ltd 冷却貯蔵庫
JPH10197133A (ja) * 1997-01-07 1998-07-31 Hitachi Ltd 冷蔵庫
JPH1151550A (ja) * 1997-08-01 1999-02-26 Hoshizaki Electric Co Ltd 排水蒸発装置
JP2004293928A (ja) * 2003-03-27 2004-10-21 Fujitsu General Ltd 冷蔵庫
EP1517106A1 (fr) * 2003-09-22 2005-03-23 Electrolux Home Products Corporation N.V. Appareil frigorifique avec un système d'évaporation d'eau de dégivrage améliorée

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009152862A1 *

Also Published As

Publication number Publication date
WO2009152862A1 (fr) 2009-12-23

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