EP1544558B1 - Congélateur bahut - Google Patents

Congélateur bahut Download PDF

Info

Publication number
EP1544558B1
EP1544558B1 EP04106513.7A EP04106513A EP1544558B1 EP 1544558 B1 EP1544558 B1 EP 1544558B1 EP 04106513 A EP04106513 A EP 04106513A EP 1544558 B1 EP1544558 B1 EP 1544558B1
Authority
EP
European Patent Office
Prior art keywords
door
channel
channels
chest freezer
edge
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.)
Not-in-force
Application number
EP04106513.7A
Other languages
German (de)
English (en)
Other versions
EP1544558A2 (fr
EP1544558A3 (fr
Inventor
Gaetano Patent Dep Whirlpool Europe s.r.l. Cascini
Marco Patent Dep Whirlpool Europe s.r.l. Cambi
Angelo Patent Dep Whirlpool Europe s.r.l Braccagni
Giuliano Patent Dep Whirlpool Europe s.r.l. Rosi
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP1544558A2 publication Critical patent/EP1544558A2/fr
Publication of EP1544558A3 publication Critical patent/EP1544558A3/fr
Application granted granted Critical
Publication of EP1544558B1 publication Critical patent/EP1544558B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/026—Doors; Covers for open-top cabinets
    • 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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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 present invention concerns a chest freezer of the type which includes a hollow body defined by a flat edge onto which a door closes.
  • frost formation on the internal surfaces of the cavity is known in the domestic freezer sector. This problem is particularly noticeable in relation to the peripheral edge of the cavity where the moist air from the exterior seeps through the peripheral seal owing to the reduced pressure created inside the freezer by both cooling of air (with consequent reduction in volume) and condensation of moisture.
  • the build-up of frost on this peripheral zone may be alarming to the user, who may think the freezer is faulty, and may also prevent the baskets supported by the edges of the cavity from sliding easily and the door from closing properly, with a consequent increase in the energy consumption of the appliance.
  • EP 0879999 A2 discloses an anti-frost device for refrigerator in which heating means are present.
  • GB 721035 A discloses a cabinet of a refrigerator with a recessed door to provide an air space for allowing convention air flow for transferring moisture from the freezer door to a lower compartment.
  • the object of the present invention is to provide a chest freezer which does not exhibit the disadvantages described above and for which production does not involve increased costs.
  • Said channels are preferably made on an internal surface of the door. This avoids costly modifications to the structure of the cavity, since only the mould used to make the internal door surface, commonly called the "inner door", is modified.
  • the channels are substantially straight with a section which increases from the end zones toward the centre line zones on each side of the chest freezer, where the section of these channels is greatest.
  • the channels preferably have three inclinations. Considering a vertical section, longitudinal to the channel, there is an inclination of the upper surface (with reference to the configuration when the door is closed) so as to increase the section from the ends toward a central zone.
  • FIG. 1 10 designates a chest freezer with a cabinet 12 on which a door 14 is hinged.
  • the cabinet 12 has a cavity 12a for food preservation, accessible via its aperture A. This aperture is defined by an internal rim K on which unwanted frost deposits occur.
  • the door 14 has a raised central portion 14a which penetrates the interior of the cavity 12a to improve thermal insulation.
  • the cabinet 12 Around the rim K, the cabinet 12 has a flat frame 16 on which there rests a peripheral seal 18 which fits into a corresponding groove 20 in the door.
  • the door 14 at the side of the central portion of greater thickness 14a, has channels 22 of variable section, which, when the door 14 is closed, are positioned facing the frame 16.
  • Each channel 22 exhibits a form which is substantially straight with a U-shaped cross-section increasing from ends H (placed close to the vertical edges V of the cabinet 12 when the door is closed) toward a centre line zone M.
  • each channel 22 is substantially an isosceles triangle of which the base is parallel to the edge of the door and the two sides (which define the internal edge 22a of the channel) converge toward an apex at the centre line M so as to intersect an edge of the zone of greater thickness 14a of the door 14.
  • a further variation in the section of the channels 22 is due to the variation in depth of the channels from the end zones H to the centre line M, this variation in depth being very clear in Fig. 4 .
  • each channel 22 preferably has a second inclination across its direction, such that its section also increases from the exterior toward the cavity 12a. It is therefore possible to identify, for the bottom wall of each channel 22, a double inclination in relation to the horizontal plane of the door: a first inclination, from the end zones H toward the centre line M, due to the variation in depth of the channel; and a second inclination in the transverse plane of the channel which facilitates the conduction of the incoming moist air toward zones away from the rim K.
  • the side walls of each channel 22 are angled in relation to the vertical to facilitate removal from the mould.
  • each channel 22 has, on its edge 22a turned toward the interior of the cavity 12a and on the centre line M, a notch 26, trapezoidal in shape in the example illustrated, which penetrates the zone of greater thickness 14a of the door 14. This notch 26, when the door is closed, extends beyond the rim K ensuring that the moist air is rapidly carried away, owing to stratification of the flows, toward the cavity 12a.
  • the internal surface of the door 14 is usually obtained from a sheet of polymeric material (liner) by thermoforming
  • formation of the channels 22 involves only a modification to the thermoforming mould compared to known solutions.
  • Another example which is not part of the present invention, also functions if the channels are shaped in the opposite way, namely with the various inclinations running from the centre line M to the ends H. Obviously this involves placing the small trapezoidal "holes" in the corners instead of on the centre lines.
  • this example has disadvantages in respect to the stated invention, because the seal is less tight in the corners, so a hole which is on the centre line will provide greater thermal dispersion.

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)
  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (5)

  1. Congélateur bahut du type comprenant un corps creux (12) de la forme d'un parallélépipède comprenant
    un bord plat (16) sur lequel une porte (14) se ferme, caractérisé en ce que, entre ce bord (16) et la porte (14), sont définies des rainures (22, 26) de section variable, lesdites rainures (22) étaient essentiellement droites avec une section qui augmente depuis les extrémités (H), lesdites extrémités (H) étant placées près des bords verticaux (V) du coffre (12) lorsque la porte est fermée, vers les zones de ligne centrale (M) où ladite section est la plus grande.
  2. Congélateur bahut selon la revendication 1, caractérisé en ce que lesdites rainures (22) sont faites dans une surface interne de la porte (14).
  3. Congélateur bahut selon la revendication 2, caractérisé en ce que la surface interne de la porte (14) possède, près des bords, des rainures (22) possédant chacune un côté essentiellement parallèle au bord de la porte et deux côtés opposés (22a) inclinés et convergeant vers lesdites zones de ligne centrale (M).
  4. Congélateur bahut selon la revendication 3, caractérisé en ce que la surface inférieure de chaque rainure (22) manifeste une première inclinaison par rapport à l'horizontale due à une différence en profondeur entre la ligne centrale (M) et les extrémités (H).
  5. Congélateur bahut selon la revendication 4, caractérisé en ce que la surface inférieure de chaque rainure (22) manifeste une seconde inclinaison par rapport à l'horizontale due à une augmentation en profondeur vers le bord interne (22a) de la rainure (22).
EP04106513.7A 2003-12-18 2004-12-13 Congélateur bahut Not-in-force EP1544558B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVA20030050 2003-12-18
IT000050A ITVA20030050A1 (it) 2003-12-18 2003-12-18 Congelatore orizzontale.

Publications (3)

Publication Number Publication Date
EP1544558A2 EP1544558A2 (fr) 2005-06-22
EP1544558A3 EP1544558A3 (fr) 2012-05-23
EP1544558B1 true EP1544558B1 (fr) 2018-05-30

Family

ID=34509529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106513.7A Not-in-force EP1544558B1 (fr) 2003-12-18 2004-12-13 Congélateur bahut

Country Status (3)

Country Link
EP (1) EP1544558B1 (fr)
BR (1) BRPI0405608A (fr)
IT (1) ITVA20030050A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5885934B2 (ja) * 2011-04-12 2016-03-16 株式会社東芝 冷蔵庫

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420240A (en) * 1945-03-13 1947-05-06 William B Haggerty Means for the prevention of frost on refrigerator doors
GB721035A (en) * 1952-07-24 1954-12-29 Gen Electric Improvements in and relating to refrigerator cabinets
US5927095A (en) * 1997-05-20 1999-07-27 Lg Electronics, Inc. Anti-frost device for refrigerators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1544558A2 (fr) 2005-06-22
ITVA20030050A1 (it) 2005-06-19
EP1544558A3 (fr) 2012-05-23
BRPI0405608A (pt) 2005-08-30

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