EP0805321B1 - Appareil de réfrigération et/ou de congélation - Google Patents

Appareil de réfrigération et/ou de congélation Download PDF

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Publication number
EP0805321B1
EP0805321B1 EP96114834A EP96114834A EP0805321B1 EP 0805321 B1 EP0805321 B1 EP 0805321B1 EP 96114834 A EP96114834 A EP 96114834A EP 96114834 A EP96114834 A EP 96114834A EP 0805321 B1 EP0805321 B1 EP 0805321B1
Authority
EP
European Patent Office
Prior art keywords
interior
cooling
connection opening
air
compressor
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.)
Expired - Lifetime
Application number
EP96114834A
Other languages
German (de)
English (en)
Other versions
EP0805321A1 (fr
Inventor
Matthias Thaler
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.)
Liebherr Werk Lienz GmbH
Original Assignee
Liebherr Werk Lienz 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
Priority claimed from DE19628278A external-priority patent/DE19628278A1/de
Application filed by Liebherr Werk Lienz GmbH filed Critical Liebherr Werk Lienz GmbH
Publication of EP0805321A1 publication Critical patent/EP0805321A1/fr
Application granted granted Critical
Publication of EP0805321B1 publication Critical patent/EP0805321B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/047—Pressure equalising devices
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/10—Refrigerator top-coolers

Definitions

  • the invention relates to a refrigerator and / or freezer according to the Preamble of claim 1.
  • a refrigerator and / or freezer according to the Preamble of claim 1.
  • Such a device is, for example, from the US-A-2 604 760.
  • Refrigerators and freezers as well as fridge-freezers exist one with one or more doors or lids Inner space.
  • the surfaces of the interior are intermittent working refrigeration device, for example a compressor cooling system chilled to those in the refrigerator and freezer or the fridge-freezer combination to a desired bring or maintain low temperature.
  • the temperatures are closed Interior lowered, reducing the pressure of the air in the interior compared to the pressure of the surrounding atmosphere. Based on these Pressure difference flows uncontrolled ambient air over the finest Leaks in the interior, so that the pressure difference is balanced over time. With the comparatively warmer Ambient air transports moisture into the interior, due to the lower dew point on the cold surfaces of the interior, for example on the evaporator. This precipitate freezes in a freezer due to the low temperatures prevailing in the interior.
  • the silica gel bed which serves as a desiccant after it has the moisture flowing in Has taken up air, regenerated by a heating element provided in the connection opening become.
  • the heating element is only activated when the compressor is switched off. This requires a comparatively complicated circuit of the heating element used to regenerate the silica gel.
  • the silica gel is also heated by an external heat source. This heat is absorbed by the inflowing but heated silica gel Air and transports it into the interior of the refrigerator, yes just to be cooled down.
  • the object of the invention is, based on US-A-2 604 760, a refrigerator and / or freezer to create that has the simplest possible structure and on the other hand good cooling performance guaranteed without the interior of the device icing up too much.
  • this task is based on a generic Refrigerator and / or freezer by the features of the characteristic Part of the main claim solved. Accordingly, one Connection opening between the interior of the device with the Ambient atmosphere created. Through this opening can be targeted the pressure equalization take place. In addition, the Connection opening exchanged air according to the invention on a desired degree of dryness. This is done within air drying is carried out at the connection opening.
  • This air drying takes place in that a regenerable drying agent, for example Molecular sieve is arranged.
  • a regenerable drying agent for example Molecular sieve is arranged.
  • the compressor runtime i.e. during the cooling phase, in which inside the device a negative pressure is generated, the incoming ambient air dried.
  • the moisture it contains will for example, taken up by the molecular sieve and bound there.
  • the compressor stops the air inside the device warms up, so that there is an overpressure in the interior.
  • the dry cold air can flow out and the Molecular sieve removes moisture.
  • the moisture will transported outside and released back into the outside atmosphere.
  • the freezer 10 shown in FIG. 1 has a coolable interior 12, in which the to be cooled or frozen can be stored well.
  • the cooling takes place through cooled inner walls 14.
  • the cooling of the inner walls 14 takes place via heat exchanger tubes 16, with one here Compressor cooling system not shown in connection stand.
  • the interior 12 can be closed by a cover 18 be, with a largely tight closability over circumferential Seals 20 is ensured.
  • a pressure equalization during the cooling process Comparatively moist ambient air flows in via fine Leaks in the sealing area of the seal 20 in the interior 12. This is indicated in Fig. 1 by corresponding arrows a.
  • the embodiment shown in FIG. 2 relates basically a freezer that in structure to the one corresponds to the state of the art. Therefore here Identical parts with the same reference numerals.
  • Within the connection opening 24 contains a molecular sieve bed 26.
  • Targeted air is exchanged between the interior 12 and the surrounding atmosphere can be.
  • the compressor runtime in which a negative pressure forms in the interior 12, the more or less humid ambient air is sucked in.

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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (2)

  1. Appareil de réfrigération et/ou de congélation avec un espace intérieur (12) à ouvrir par au moins une porte ou un couvercle (18), qui présente des surfaces au moins partiellement refroidies, où celles-ci peuvent être réfrigérées par une installation frigorifique fonctionnant au moins par intermittence, et où l'espace intérieur (12) est en liaison par une ouverture de liaison (24) avec l'atmosphère ambiante, où l'air affluant à travers l'ouverture de liaison pendant le temps de fonctionnement du compresseur est réglable par un agent de séchage pouvant être régénéré (26) à un degré de séchage recherché,
    caractérisé en ce que l'agent de séchage (26) pouvant être régénéré est disposé dans l'ouverture de liaison (24) de façon qu'il soit régénéré exclusivement par l'air sec, froid, s'écoulant pendant l'arrêt du compresseur de l'espace intérieur (12) dans l'atmosphère ambiante.
  2. Appareil de réfrigération et/ou de congélation (10) selon la revendication 1, caractérisé en ce qu'un tamis moléculaire (26) sert d'agent de séchage pouvant être régénéré.
EP96114834A 1996-05-03 1996-09-16 Appareil de réfrigération et/ou de congélation Expired - Lifetime EP0805321B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19617812 1996-05-03
DE19617812 1996-05-03
DE19628278 1996-07-12
DE19628278A DE19628278A1 (de) 1996-05-03 1996-07-12 Kühl- und/oder Gefriergerät

Publications (2)

Publication Number Publication Date
EP0805321A1 EP0805321A1 (fr) 1997-11-05
EP0805321B1 true EP0805321B1 (fr) 2001-12-05

Family

ID=26025371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114834A Expired - Lifetime EP0805321B1 (fr) 1996-05-03 1996-09-16 Appareil de réfrigération et/ou de congélation

Country Status (3)

Country Link
EP (1) EP0805321B1 (fr)
AT (1) ATE210268T1 (fr)
ES (1) ES2169187T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659356A2 (fr) 2004-11-17 2006-05-24 Liebherr-Hausgeräte Lienz GmbH Réfrigérateur et/ou congélateur

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1845321B1 (fr) 2006-01-30 2017-07-26 Whirlpool Corporation Réfrigérateur avec dispositif d'absorption d'humidité
US9488404B2 (en) * 2008-09-30 2016-11-08 Thermo Fisher Scientific (Asheville) Llc Frost reduction by active circulation
EP2520882B1 (fr) * 2011-05-02 2017-09-27 Whirlpool Corporation Congélateur doté d'une formation réduite de givre
EP3364135B1 (fr) * 2017-02-16 2020-07-22 Whirlpool Corporation Congélateur coffre
AT522200A1 (de) 2019-02-07 2020-09-15 Rep Ip Ag Transportbehälter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259986A (en) * 1939-08-30 1941-10-21 Gen Electric Refrigerator
US2604760A (en) * 1950-04-29 1952-07-29 Gen Electric Moisture collecting and removing arrangement
DE1189566B (de) * 1961-08-25 1965-03-25 Bosch Gmbh Robert Kompressionskuehlanlage
US3826106A (en) * 1972-12-14 1974-07-30 Kemp R Refrigeration apparatus and process
US5271762A (en) * 1992-09-29 1993-12-21 Schoofs Gregory R Apparatus and method for air drying with reduced oxygen enrichment
US5339644A (en) * 1993-04-29 1994-08-23 Singh Kanwal N Defrost system for refrigeration apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659356A2 (fr) 2004-11-17 2006-05-24 Liebherr-Hausgeräte Lienz GmbH Réfrigérateur et/ou congélateur

Also Published As

Publication number Publication date
ATE210268T1 (de) 2001-12-15
ES2169187T3 (es) 2002-07-01
EP0805321A1 (fr) 1997-11-05

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