EP2283286A2 - Appareil frigorifique à soupape de compensation de pression - Google Patents

Appareil frigorifique à soupape de compensation de pression

Info

Publication number
EP2283286A2
EP2283286A2 EP09738046A EP09738046A EP2283286A2 EP 2283286 A2 EP2283286 A2 EP 2283286A2 EP 09738046 A EP09738046 A EP 09738046A EP 09738046 A EP09738046 A EP 09738046A EP 2283286 A2 EP2283286 A2 EP 2283286A2
Authority
EP
European Patent Office
Prior art keywords
valve assembly
recess
wall
seal
appliance 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.)
Granted
Application number
EP09738046A
Other languages
German (de)
English (en)
Other versions
EP2283286B1 (fr
Inventor
Karl-Friedrich Laible
Roland KÜMMEL
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 EP2283286A2 publication Critical patent/EP2283286A2/fr
Application granted granted Critical
Publication of EP2283286B1 publication Critical patent/EP2283286B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/061—Walls with conduit means
    • 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
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/087—Sealing strips

Definitions

  • the present invention relates to a refrigeration device such as a refrigerator or freezer with a pressure compensation valve, which serves to prevent the formation of a negative pressure in the interior of the refrigerator.
  • WO2008 / 025378 proposes to solve the problem of icing by creating a passage between the interior and the surroundings which bridges a gasket mounted in a customary manner between the door and the carcass. However, the passage does not prevent a continuous exchange of air between the interior and the environment and thus creates a gateway for heat and moisture.
  • Object of the present invention is to provide a refrigeration device with a pressure compensation valve, in which the pressure compensation valve can be mounted with minimal effort and the risk of leakage at the pressure compensation valve is eliminated.
  • the object is achieved in that in a refrigerator with a body and a door that surrounds a cooled interior and facing each other, one of the
  • Valve assembly having an inlet and an outlet on different sides of the
  • Has seal is inserted into the recess.
  • the effort in assembling and sealing the housing part, in which the recess is formed, is not higher than in a corresponding housing part without a recess.
  • valve assembly by releasably inserting the valve assembly into the recess, the drawback of conventional pressure compensating valves is eliminated in that they are not interchangeable due to their embedment in the insulating material and are virtually non-repairable in the event of failure.
  • a second seal is conveniently inserted between the walls of the recess and respective opposite walls of the valve assembly to prevent uncontrolled air exchange between the interior and the environment via gaps between said walls.
  • the second seal can also serve for frictionally releasable anchoring of the valve assembly in the recess.
  • this groove is interrupted by the recess, and the interruption is suitably supplemented by a groove formed in a housing wall of the valve assembly, so that the Seal is held securely even at the level of the valve assembly.
  • a valve seat is preferably protected within the valve assembly, formed in an intermediate wall between an inlet chamber and an outlet chamber.
  • the partition can be horizontal, so that a closing body lying on it is acted upon by its own weight in the closed position.
  • the valve assembly is disposed at a lower edge of one of the opposing panels.
  • the inlet chamber below the intermediate wall and the outlet chamber can be arranged above the same, and a pressure prevailing in the inlet chamber overpressure lifts the closing body from the intermediate wall, so that the valve assembly becomes permeable.
  • the closing body may in particular be formed by a diaphragm resting against the intermediate wall.
  • the sealing action is based on a two-dimensional contact between the diaphragm and the diaphragm.
  • the wall surface in which the recess is formed preferably has a flat outer edge, that is, the recess does not extend to the edge, so that the sealing along the edge of the wall surface is no more expensive than a wall surface without recess.
  • FIG. 1 is a perspective detail view of a refrigerator according to the present invention.
  • FIG. 2 shows a valve assembly for use in the refrigerator of FIG. 1 according to a first embodiment
  • FIG. 3 shows a valve assembly according to a second embodiment
  • FIG. 4 shows a section through the valve assembly of FIG. 2 or 3;
  • Fig. 1 shows in a perspective section the lower edge region of a refrigerator door 1, which rests in the closed position on a front frame surface 3 of a body 2 of the refrigerator.
  • the door 1 is constructed in a conventional manner from an inner wall 4 deep-drawn plastic, an outer wall 5 formed from sheet metal, which forms a front side and lateral flanks of the door 1 and is connected at its edges foam-tight with the inner wall 4, and upper and lower end profiles, of which in the Fig. Only the lower end profile 6 is shown and which are plugged foam-tight on the upper and lower edges of the inner wall 4 and the outer wall 5.
  • the limited by the walls 4, 5 and end profiles 6 inner cavity of the door 1 and the interior of the bottom of the body 2 behind the frame surface 3 in Figure 1 are shown empty. in the finished refrigerator, the cavities of the door 1 and the body 2 are filled in the known manner with insulating foam.
  • the inner wall 4 is divided into an outer frame 7, which is located at a small distance from the frame surface 3 formed by the front sides of the floor, ceiling and side walls of the body, and a central one surrounded by the frame 7
  • Body 2 protrudes.
  • a circumferential groove 9 in which in a conventional manner, a magnetic seal 10 is anchored positively.
  • the magnetic seal 10 is in the closed position of
  • the groove 9 is interrupted by a recess 11 of the inner wall 4, in which a valve assembly 12 is inserted.
  • the substantially box-shaped valve assembly 12 is divided by an inner partition 13 into an inlet chamber 14 in its lower portion and an outlet chamber 15 in its upper portion. Inlet and outlet openings 16, 17 of the chambers 14, 15 open below or above the magnetic seal 10 in the space between the frame surface 3 and the frame 7 of the door first
  • a large-area passage opening 18 in the partition wall 13 is blocked by a loose, slightly flexible membrane 19. It is sufficient a slight negative pressure in the interior of the refrigerator in order to lift the membrane 19 and to let ambient air flow into the interior. Once a pressure equilibrium between the interior and the environment is achieved, the membrane 19 obstructs the passage opening 18 and thus prevents a further influx of warm, moist ambient air.
  • the inlet and outlet openings 16, 17 are significantly smaller than the free cross-section of the chambers 14, 15, on the one hand to limit the exchange of air between the chambers 14, 15 and the environment or the interior of the refrigerator with the valve closed and the heat flow to the interior over to limit the valve assembly 12 to the unavoidable level.
  • the dimensions of the passage opening 18, however, are expediently greater than those of the inlet and outlet openings 16, 17 in order to be able to exert a strong force on the membrane in the event of a pressure difference between the interior and the surroundings.
  • Fig. 2 shows a view of the valve assembly 12 obliquely from the front.
  • the dimensions of the valve assembly are chosen so that it fills the recess 11 as exactly as possible and their front 20 connects flush to the frame 7 everywhere.
  • a groove 21 continuously extending groove 21 is provided on the front side 20.
  • a sealing ring 22 made of foam or a rubber-elastic material, which is intended to be pressed flat between the outer surfaces of the valve assembly 12 and the walls of the recess 11 when the valve assembly 12 in the Well 1 1 is inserted.
  • the sealing ring 22 ensures a firm hold of the valve assembly 12 in the recess 1 1, without a positive locking is required, on the other hand it prevents any air exchange between the interior and the environment via gaps between the walls of the recess 11 and those of the valve assembly 12th ,
  • the sealing ring 22 may also be replaced by a U-shaped sealing element 23, which extends horizontally over the side walls and rear wall of the valve assembly 12 at the level of the groove 21. Also, the use of a sealing ring which extends over the bottom of the groove 21 and outside the groove as the sealing element 23 comes into consideration.
  • Fig. 4 shows a longitudinal section through the valve assembly 12.
  • the partition wall 13 is disposed above the groove 21 to take advantage of the fact that the depth of the assembly 12 is greater there than below the groove 21 and the passage opening 18 can thus be made larger.
  • the passage opening 18 is arranged eccentrically in the dividing wall 13, a region of the dividing wall 13 to the left of the passage opening 18 serves as a support on which the membrane 19 is fixed, for example by clamping between the dividing wall and one from the front 20 into the interior of the outlet chamber 15 projecting tongue 24, by gluing, riveting or the like.
  • the membrane 19 Since the membrane 19 is held by its own weight on the through hole 18, it does not need to be elastic to produce a restoring force in the closed position; It can be very soft and as a result even close tightly when an ice layer begins to form on the partition wall 13. However, the risk of icing in the amount of the partition wall 13 is low, since in the body 2 just behind the frame surface 3 at the level of the inlet chamber 14, a frame heater 25 (see Fig. 1) in the form of a flowed through by compressed, hot refrigerant pipe.
  • valve assembly 12 in a cross section.
  • the partition wall 13 between the chambers 14, 15 is inclined to to maximize their area or the passage 18 formed therein.
  • the membrane 19 is mounted above the passage opening 18 on the partition wall 13, so that when it is hanging limp down, it snuggles around the passage opening 18 to the partition and thus seals the passage opening 18.
  • the valve assembly 12 may be narrower in Fig. 5 than that of Fig. 4, since the side of the through hole 18 no space for fixing the membrane 19 is needed. Accordingly, the associated with the recess 1 1 vulnerability of the insulating layer in the door 1 can be reduced.

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)
  • Refrigerator Housings (AREA)
EP09738046A 2008-04-29 2009-04-22 Appareil frigorifique à soupape de compensation de pression Active EP2283286B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008021375A DE102008021375A1 (de) 2008-04-29 2008-04-29 Kältegerät mit Druckausgleichsventil
PCT/EP2009/054812 WO2009133002A2 (fr) 2008-04-29 2009-04-22 Appareil frigorifique à soupape de compensation de pression

Publications (2)

Publication Number Publication Date
EP2283286A2 true EP2283286A2 (fr) 2011-02-16
EP2283286B1 EP2283286B1 (fr) 2011-09-07

Family

ID=41130851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09738046A Active EP2283286B1 (fr) 2008-04-29 2009-04-22 Appareil frigorifique à soupape de compensation de pression

Country Status (7)

Country Link
EP (1) EP2283286B1 (fr)
CN (1) CN102016460B (fr)
AT (1) ATE523742T1 (fr)
DE (1) DE102008021375A1 (fr)
ES (1) ES2368892T3 (fr)
RU (1) RU2010147318A (fr)
WO (1) WO2009133002A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20110189U1 (it) * 2011-06-01 2012-12-02 Ik Interklimat S P A Valvola di compensazione per ambienti, quali una cella frigorifera, in cui si ha una pressione differente da quella atmosferica
DE102013215518A1 (de) * 2013-08-07 2015-02-12 BSH Bosch und Siemens Hausgeräte GmbH KäLTEGERäT MIT EINEM BELüFTUNGSVENTIL
DE102015222924A1 (de) 2015-11-20 2017-05-24 BSH Hausgeräte GmbH Haushaltskältegerätevorrichtung und Verfahren mit einer Haushaltskältegerätevorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1601171U (de) * 1949-02-15 1950-02-09 Vossloh Werke Gmbh Leuchte mit parallel zu einem traeger angeordneten leuchtstoffroehren.
US3027735A (en) * 1960-01-25 1962-04-03 Gen Motors Corp Refrigerating apparatus
DE1601171A1 (de) * 1968-01-26 1970-06-18 Bosch Hausgeraete Gmbh Kuehlmoebel,insbesondere Gefriertruhe
FR2445916A1 (fr) * 1979-01-04 1980-08-01 Refrigeration Cie Caladoise Appareil de production de froid, muni d'un systeme de reequilibrage de pressions
DE3045599A1 (de) * 1980-12-03 1982-07-01 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Gefriergeraet, insbesondere gefrierschrank o.dgl.
JP2918530B2 (ja) * 1997-04-18 1999-07-12 三星電子株式会社 冷気吐出口の開閉装置を備えた冷蔵庫
KR100261346B1 (ko) * 1997-08-29 2000-07-01 전주범 냉동고 도어의 용이 개방구조
DE202006013229U1 (de) * 2006-08-29 2006-10-26 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Druckausgleichsventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009133002A3 *

Also Published As

Publication number Publication date
WO2009133002A3 (fr) 2009-12-23
ES2368892T3 (es) 2011-11-23
WO2009133002A2 (fr) 2009-11-05
ATE523742T1 (de) 2011-09-15
EP2283286B1 (fr) 2011-09-07
CN102016460A (zh) 2011-04-13
CN102016460B (zh) 2013-03-27
RU2010147318A (ru) 2012-06-10
DE102008021375A1 (de) 2009-11-05

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