ES2232293B1 - DOOR OF FRIDGE APPLIANCE. - Google Patents

Abstract

Refrigerator door with a thermal insulation layer (4) introduced into liquid starting components between an outer liner (1) and separated from it an inner liner (2) that has a surrounding side area, which forms together with a lateral area of the outer covering (1) an overlapping section (s) with a gap (r) into which a hermetic seal (3) of door insulation has been introduced as an intermediate insulating layer. The hermetic seal (3) in the area of thermal insulation (5) protrudes from the free edges of the gap and on the protruding side in its final section has means that isolate (5) the gap (r) from the thermal insulation layer (4).

Description

Refrigerator door.

Technical Field of the Invention

The invention is included in the field of refrigerators and more specifically, in the installation of Closing joints of the doors of these devices.

Doors consisting of an insulation layer thermal introduced into liquid starting components between a exterior cladding and separated from it a cladding interior that has a lateral area that surrounds it, which forms along with a lateral area of the outer covering a section of overlap with a gap in which a joint has been introduced hermetic door insulation as intermediate layer insulating.

State of the art

Currently, refrigerator doors of which the invention is concerned, consist of an insulating layer thermal introduced into liquid starting components between the hollow forming an outer liner and a liner interior that has a lateral area that surrounds it and that forms together with the lateral area of the outer covering a section of overlap with a gap in which one end of the magnetic seal of the device in all its length as intermediate insulating layer so that there is no leakage of insulating material in the injection process. This material usually be polyurethane, which inflates very quickly generating pressure in the assembly process, and that is retained by that end of board.

Description of the invention

The object of the invention is a door of Refrigerator with a thermal insulation layer introduced in liquid starting components between an outer coating and separated from it an inner lining that has a surrounding lateral zone, which forms together with a lateral zone of the outer lining an overlapping section with a gap in which has been introduced a hermetic seal of insulation of the door as an intermediate insulating layer, where the seal in the thermal insulation zone protrudes from the free edges of the gap and on the outstanding side in its final section presents means that isolate the gap against the insulation layer thermal.

With this configuration, the problem of the injection of the insulating material, which at the time of its expansion, by generating the pressure you could go out for the little ones loopholes that could remain, since when part of the hermetic seal at the inner end where the material is insulating, cover the groove between the two linings making it impossible to pass through these possible loopholes.

One of the possible ways that the insulating means is like sealing skirts. These skirts, with the arrival of the material, they separate and fold against the walls of the coatings, generating a closure along the entire groove that there is between both coatings.

Another way insulating media can have is that of a thickening that has a cross section circular and that is hollow inside. This gives more consistency. if possible, and much less damage. Being hollow, the fold produced on it, it generates a pressure against the insulating material in its advance towards the grooves.

Right on the stretch where the overlap ends between the side areas of the liners inside where the insulating material is injected, the insulating means they present a section that adapts to the shape of the section transverse of that overlap zone. This way it is adjusted to the critical junction zone where exactly the groove. In this embodiment, it is quite favorable that insulating means have a wedge-shaped section I even got into the slot.

Description of the drawings

Figure 1. Show a partial sectioned view of the finished door, with the magnetic joint and in disposition in front of the side of the refrigerator in which it closes.

Figure 2 .- Shows a sectional view of the magnetic gasket included in the door object of the invention.

Figure 3 .- Shows an enlarged sectional view of figure 1 of the door with the magnetic gasket.

Figure 4 .- Shows an enlarged sectional view from the area of the magnetic joint where the media are located insulators as an embodiment of the invention.

Figure 5 .- Shows an enlarged sectional view from the area of the magnetic joint where the media are located insulators as another embodiment of the invention.

Description of an embodiment of the invention

As seen in the figures, the appliance door Fridge has an elastic 3 magnetic gasket, which closes and sticks with the magnet 7 the door over the entire frame 6 of the opening of the Fridge bowl.

The manufacture of these doors requires a good insulation against leakage of insulating material 4 that injected into the cavity formed by the coatings interior 2 and exterior 3. These coatings face between yes, joining by its outer frames overlapping each other a small length S. In that small overlap S of connection, a groove r into which a lip-shaped end 11 of the sealing seal of the appliance 3.

Because of its length, lip 11 exceeds the overlap length S protruding from the inner end of the gap left by the liners 1,2. At that end protruding from lip 11 of joint 3, it shows a thickening circular section 9 with a hole 10 inside it along the entire length of the end of the joint groove between the coatings

It is very interesting the realization in which this circular thickening 9, is on the same entry edge to groove r of overlap S.

Once the door is in this situation, it injected in liquid composition an insulating material 4 as per example a polyurethane foam that inflates occupying all the space of the gap left by the liners 1,2.

The insulating material 4 quickly occupies all the gap left by the liners 1,2, and exerts a pressure against all the surface that is found, both of the coatings as of the hollow circular thickening 9 of the seal of the door 3. Polyurethane foam 4 exerts enough force on her so that the walls of her surface are pressed against the groove preventing absolutely nothing from leaking of exterior insulating material, which is quite critical because in the case of material leakage, we must reoperate that door cleaning it with foam and in some cases remaining useless.

In another embodiment, the insulating means 5 which prevent the exit of insulating material 4 outside the door through slot r, they are materialized as skirts of 5 'shutter that folds over the inner walls of the inner 2 and outer 1 coatings, preventing material leakage  insulator 4.

With this configuration, the problem of the injection of the insulating material, which at the time of its expansion, by generating the pressure you could go out for the little ones loopholes that could remain, since when part of the hermetic seal at the inner end where the material is insulating, cover the groove between the two linings making it impossible to pass through these possible loopholes.

Claims (7)

1. Refrigerator door with a thermal insulation layer (4) introduced in liquid starting components between an outer liner (1) and separated from it an inner liner (2) that has a surrounding side area, which forms together with a lateral area of the outer covering (1) an overlapping section (s) with a gap (r) in which a hermetic seal (3) of door insulation has been introduced as an intermediate insulating layer, characterized in that the joint Hermetic (3) in the area of thermal insulation (5) protrudes from the free edges of the gap and on the protruding side in its final section presents means that isolate (5) the gap (r) against the thermal insulation layer (4) ). 2. Door of a refrigerating apparatus according to claim 1, characterized in that the insulating means (5) are configured as sealing skirts (5 '). 3. Refrigerator door according to claim 1, characterized in that the insulating means (5) are configured as a thickening (5 ''). 4. Refrigerator door according to claim 3, characterized in that the thickening (5 '') has a circular cross-section (9). 5. Door of a refrigerating apparatus according to claim 3 or 4, characterized in that the thickening (5 '') is realized as a hollow profile (10). 6. Refrigerator door according to one of claims 1 to 5, characterized in that the insulating means (5) have a section that adapts to the shape of the cross section in its final section on the thermal insulation side. 7. Refrigerator door according to claim 6 characterized in that the insulating means (5) have a wedge-shaped section.