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Foam-filled hollow body and method for preventing foam from discharging through an opening of a hollow body to be foam-filled

A technology for foam filling and hollow bodies, applied in cooling fluid circulation devices, lighting and heating equipment, household appliances, etc., which can solve the problems of increased cost and complexity, and the inability to reliably prevent foam leakage.

Inactive Publication Date: 2007-02-07
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One problem with this method is that the stiffeners and layers of breakable material must be attached to the panels in the early stages of shell assembly, and if the layer of breakable material is in a processing step between installation and foam filling slipped off, it can no longer reliably stop the foam from escaping
[0007] Although this problem can be dealt with by fixing the destructible material layer in a separate process, this adds cost and complexity

Method used

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  • Foam-filled hollow body and method for preventing foam from discharging through an opening of a hollow body to be foam-filled
  • Foam-filled hollow body and method for preventing foam from discharging through an opening of a hollow body to be foam-filled
  • Foam-filled hollow body and method for preventing foam from discharging through an opening of a hollow body to be foam-filled

Examples

Experimental program
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Embodiment Construction

[0024] figure 1 A perspective view shows a freezer-refrigerator with a housing 1 on which the invention can be used. The housing 1 comprises an outer wall consisting of a plurality of side walls 2 and an inner wall 3, which are distributed across the front 4 in the region of the front 4 of the housing by means of strips 5 integral with the side walls 2 and The upper frontal strips 6, 7 are connected to each other.

[0025] The hinges supporting the two doors 9, 10 are attached to the front strips 6, 7, respectively.

[0026] FIG. 2 shows a horizontal section through the front area of ​​the housing 1 at the level of a hinge 8 . The free end of the edge strip 5 is formed into a clip 11 in which the frontal strip 6 is clamped. The front panel 6 includes an outer appearance panel 12, a reinforcement 13, in which a threaded shank 14 is formed so as to install hinges 8 fixing screws (not shown), and a destructible A layer 15 of material such as paper, plastic film or metal foil,...

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Abstract

In order to prevent foam from discharging through an opening of a wall of a hollow body to be foam-filled, a destructible material layer is placed between the opening of the hollow body and a section of the wall, which surrounds the same, and a reinforcing part, which has a hole that overlaps the opening. The section of the wall and the reinforcing part are joined at a short distance from the opening without substantially heating the wall and the reinforcing part. The hollow body is foam-filled and the destructible material layer is removed in the area of the opening.

Description

technical field [0001] The invention relates to a foam-filled hollow body, in particular a housing of a freezer-refrigerator, and to a method for preventing the outflow of foam at an opening in a wall of a hollow body to be foam-filled. Background technique [0002] The outer shell of the freezer is usually made of an outer wall and an inner wall that defines the internal cooling chamber of the freezer. A cavity is enclosed between the inner and outer wall. During the manufacturing process of the freezer, the cavity Filled with an insulating foam. The foaming material is injected into the cavity in a dense, more or less flowable state and, while the material is in the cavity, foams at least most of the material by forming gas bubbles in the material. The dosing amount to be used is such that the material in the foamed state fills the cavities without leaving voids without foam. Thus, the foam is under pressure inside the cavity and tends to escape through the holes in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D23/06B29C44/12
CPCB29C44/12F25D2400/04F25D23/064B29C44/351
Inventor K·-F·莱布勒H·斯泰奇埃勒
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH