EP0184241B1 - Verfahren zur Herstellung eines mit Kaltluftkanälen versehenen Kühlschrankes - Google Patents

Verfahren zur Herstellung eines mit Kaltluftkanälen versehenen Kühlschrankes Download PDF

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Publication number
EP0184241B1
EP0184241B1 EP85201834A EP85201834A EP0184241B1 EP 0184241 B1 EP0184241 B1 EP 0184241B1 EP 85201834 A EP85201834 A EP 85201834A EP 85201834 A EP85201834 A EP 85201834A EP 0184241 B1 EP0184241 B1 EP 0184241B1
Authority
EP
European Patent Office
Prior art keywords
ducts
refrigerator
wall
interspace
manufacturing
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
EP85201834A
Other languages
English (en)
French (fr)
Other versions
EP0184241A3 (en
EP0184241A2 (de
Inventor
Franco Moretti
Franco Germi
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 International BV
Original Assignee
Whirlpool International BV
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 International BV filed Critical Whirlpool International BV
Publication of EP0184241A2 publication Critical patent/EP0184241A2/de
Publication of EP0184241A3 publication Critical patent/EP0184241A3/en
Application granted granted Critical
Publication of EP0184241B1 publication Critical patent/EP0184241B1/de
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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/064—Walls defining a cabinet formed by moulding, e.g. moulding in situ
    • 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
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts

Definitions

  • the invention relates to a method of manufacturing a refrigerator having an inner wall and an outer wall which together define an interspace, and cooling air ducts which are at least partially embedded in the thermal insulation in said interspace.
  • the cooling air is obtained by means of a motor-driven fan which circulates air from an evaporator compartment to a preservation compartment.
  • the ducts which are to remain at least partially embedded in the thermal insulation are formed, especially where they are of complicated extension, by fitting and fixing together less complicated parts generally constructed of injection- moulded and/or extruded plastics material. This requires a relatively high expenditure of labour and material.
  • An example of such airducts is described in US-A-3 048 024.
  • the main object of the present invention is to provide a method which avoids the use of ducts obtained by fitting and fixing elementary parts together, and thus prevent possible infiltration of insulating material into the ends thereof.
  • a method of manufacturing a refrigerator having an inner wall and an outer wall which together define an interspace, and cooling air ducts which are at least partially embedded in a thermal insulation in said interspace, the method comprising the steps of forming the ducts with closed ends by blow-moulding from a plastics material; fitting the ducts to the inner wall with the closed ends protruding through apertures in the inner wall; generating the thermal insulation in-situ in the interspace between the two walls; and opening the ducts by removing the closed ends.
  • the trapped air mass also has the advantage of opposing excessive deformation of said ducts, even if smaller thicknesses than those currently employed are used, with an obvious saving in material.
  • the fact that the ducts are initially formed with closed ends obviates both the possibility of infiltration of thermal insulation material into said ducts and the need to fit covers or plugs to their ends, with the consequences that can result from their being imperfectly fitted.
  • the reference numeral 1 indicates an air-circulation refrigerator which is shown without doors and which comprises an outer wall 2 and an inner wall 3, the latter having two parts 4 and 5 defining inner walls of separate preservation compartments 6 and 7 respectively.
  • the refrigerator also comprises a polyurethane thermal insulation mass 30 obtained by in-situ foaming of reactive components, which are introduced into the interspace between said inner and outer walls, and into a horizontal separating wall 8 which separates the two compartments 6 and 7 from each other.
  • the lower compartment 6 is intended for preserving frozen food and thus operates at a lowertempera- ture than the other compartment 7, which is intended for the refrigerator preservation of food.
  • the refrigerator is also provided with an air-circulation refrigeration circuit comprising: a compressor 8' disposed in an external recess 9 in the refrigerator casing; a condenser 10 situated on the back 11 of the refrigerator and shown schematically in broken lines; an evaporator bank 12 housed in a chamber 13 at the back of compartment 6 and connected to a wall 15; a fan 14, of which the impeller 14A is situated at the level of corresponding apertures in the wall 15 above the bank 12 and feeds air into a manifold 16 extending across the upper part of the wall 15; a rising duct 17 which commences in the manifold 16 and extends mainly in the thermal insulation mass 30 to open into the upper part of the compartment 7 by way of an inserted conveyor member 31; a return duct 32 partially embedded in the thermal insulation mass and commencing at 32A in the lower part of the compartment 7 at one side thereof and terminating at 32B in the chamber 13 below the evaporator bank 12; and one or more apertures 33 connecting the manifold 16 to the compartment 6 in order to
  • the ducts 17 and 32, and possibly the duct 50 which extends inside the conveyor member 31 and constitutes in effect the outlet of the duct 17, are of plastics construction and are formed by blow-moulding from a plastics material, such as polyethylene, with their ends closed, as shown at A in Figures 3 and 4, so as to trap within the ducts a volume of air which, in conjunction with stiffening ribs if necessary, prevents excessive deformation of the walls of the ducts under the pressures which arise during the in-situ formation of the thermal insulation.
  • the ducts are opened by removing their closed ends A, for example with a knife, by cutting along weakening or guide lines B.
  • the outer wall 2 and inner walls 4 and 5 are fitted together in the conventional manner using suitable spacer means so that the interspace to be occupied by the thermal insulation remains defined between the walls.
  • the closed ducts 17 and 32 are disposed in their chosen positions using spacers and adhesive means, so that their closed ends A protrude through apertures provided for the purpose in the walls, as shown in Figure 4.
  • the structure resulting from this assembly is then placed in a containing mould, and the reactive components are introduced into the interspace through one or more apertures, not shown, in the outer wall, and react to produce the thermally insulating mass 30 of expanded polyurethane.
  • the refrigerator is removed from the mould and the closed ends A of the ducts are removed.
  • the refrigerator is then passed on to other usual operations in the manufacturing process.

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 (2)

1. Verfahren zum Herstellen eines Kühlschranks mit einer Innenwand und einer Außenwand, die zusammen einen Zwischenraum definieren, sowie mit Kühlluftkanälen, die wenigstens teilweise in einer thermischen Isolierung in dem genannten Zwischenraum eingebettet sind, wobei dieses Verfahren die folgenden Verfahrensschritte aufweist: das Bilden der Kanäle mit abgeschlossenen Enden in einem Blasepreßverfahren aus einem Kunststoff; das Anbringen der Kanäle an der Innenwand, wobei die abgeschlossenen Enden sich durch Öffnungen in der Innenwand hindurch erstrecken; das Erzeugen derthermischen Isolierung an Ort und Stelle in dem Zwischenraum zwischen den beiden Wänden; und das Öffnen der Kanäle durch Entfernung der geschlossenen Enden.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die geschlossenen Enden an verengten Zonen der genannten Kanäle entfernt werden.
EP85201834A 1984-11-23 1985-11-11 Verfahren zur Herstellung eines mit Kaltluftkanälen versehenen Kühlschrankes Expired - Lifetime EP0184241B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT23711/84A IT1177304B (it) 1984-11-23 1984-11-23 Metodo per produrre frigoriferi con canalizzazioni per l'aria di raffreddamento e frigorifero ottenuto con il metodo
IT2371184 1984-11-23

Publications (3)

Publication Number Publication Date
EP0184241A2 EP0184241A2 (de) 1986-06-11
EP0184241A3 EP0184241A3 (en) 1987-08-05
EP0184241B1 true EP0184241B1 (de) 1990-10-17

Family

ID=11209344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201834A Expired - Lifetime EP0184241B1 (de) 1984-11-23 1985-11-11 Verfahren zur Herstellung eines mit Kaltluftkanälen versehenen Kühlschrankes

Country Status (4)

Country Link
EP (1) EP0184241B1 (de)
DE (1) DE3580156D1 (de)
ES (1) ES8704618A1 (de)
IT (1) IT1177304B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6112542A (en) * 1998-12-15 2000-09-05 Daewoo Electronics Co., Ltd. Refrigerator having a cooled-air passageway formed with an external surface of a liner
US7234317B2 (en) 2001-07-16 2007-06-26 Maytag Corporation Air tunnel diverter and method of installing same
US6732543B2 (en) 2001-07-16 2004-05-11 Maytag Corporation Air tunnel diverter and method of installing same
DE10202494A1 (de) * 2002-01-23 2003-07-31 Bsh Bosch Siemens Hausgeraete Innenwandung für ein Kältegerätegehäuse
BRPI0502706B1 (pt) * 2005-07-12 2015-12-15 Multibrás S A Eletrodomésticos arranjo de insuflamento de ar em um refrigerador combinado
CN109282556B (zh) * 2018-09-17 2020-12-11 湖北美的电冰箱有限公司 风冷冰箱

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048024A (en) * 1959-07-06 1962-08-07 Gen Motors Corp Refrigerating apparatus
DE1227921B (de) * 1962-04-19 1966-11-03 Siemens Elektrogeraete Gmbh Kuehlschrank mit einer im Unterteil angeordneten Kompressionskaeltemaschine
US3177271A (en) * 1962-09-13 1965-04-06 Gen Electric Method of manufacturing a refrigerator cabinet
US3321933A (en) * 1965-08-25 1967-05-30 Whirlpool Co Refrigeration apparatus
DE2453796C2 (de) * 1974-11-13 1984-08-16 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kühlmöbel, insbesondere Zweitemperaturen-Kühlschrank

Also Published As

Publication number Publication date
EP0184241A3 (en) 1987-08-05
ES549096A0 (es) 1987-04-01
ES8704618A1 (es) 1987-04-01
IT1177304B (it) 1987-08-26
DE3580156D1 (de) 1990-11-22
IT8423711A0 (it) 1984-11-23
IT8423711A1 (it) 1986-05-23
EP0184241A2 (de) 1986-06-11

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