JPS6032867Y2 - refrigerator door - Google Patents

Description

[Detailed explanation of the invention] This invention combines a steel door front plate and a synthetic resin door back plate,
This is related to the improvement of refrigerator doors that are filled with foam insulation material between them, to prevent the door back panel from being damaged when the door front panel and door back panel are overlapped, and to prevent the door back panel from being damaged when the insulation material is foamed. The purpose is to prevent the foam insulation material from leaking outside through the gap between the door front plate and the door back plate.

The present invention will be explained below based on the drawings.

1 and 2 show an embodiment of the present invention.

1 is the insulation box body of the refrigerator; 2 is an insulation door that opens and closes the front opening of the insulation box body 1; It consists of a heat insulating material 5.

The door top plate 3 is dish-shaped and has a peripheral edge bent inward to form a flange 3a.

The door back plate 4 has a groove 1a and a protruding edge 4b formed on its periphery, and the outer edge of the protruding edge 4b extends outward to form a flange 4c.

Reference numeral 6 denotes an electric heater disposed around the entire inner corner of the door face plate, which serves to prevent sweating around the heat insulating door 2.

Reference numeral 7 denotes a heat transfer ribbon made of a thin plate with good thermal conductivity such as aluminum foil, which covers and fixes the electric heater 6, and its tip extends outward along the entire circumference of the flange 3a of the door top plate 3. is derived.

The door back plate 4 having the protruding edge 4b is fitted onto the tip of the flange 3a, and the flange 4c is superimposed on the flange 3a via the heat transfer ribbon 7, and the door front plate 3 and the door The heat insulating door 2 is constructed by filling the foam heat insulating material 5 between the back plate 4 and the back plate 4.

8 is a gasket whose base 8a is fitted into a groove in the door back plate 4 and fixed.

As shown in Fig. 3, the conventional structure of this type of refrigerator insulation door is that the tip of the heat transfer thin strip 7' is not led out to the outside of the door top plate 3', but is connected to the flange of the door top plate 3'. 3a' and the flange 4 of the door back plate 4'
c' was directly joined, so when overlapping the door front plate 3' and the door back plate 4', the edge of the flange 3a' of the door front plate 3' is connected to the periphery of the door back plate 4'. The flange parts 3a' and 4a' are often damaged, and when filling the foam insulation material 5', the flange parts 3a' and 4a'
The foam insulation material sometimes leaked from the gaps.

On the other hand, in the refrigerator door of the present invention, as is clear from the above embodiment, the tip and the entire circumference of the flange of the door front plate are covered with the heat soaked ribbon, so the door front plate and the door back plate are overlapped. When putting them together, the door back plate will not be damaged by the flange of the door front plate, and the gap between the door front plate and the door back plate flange will be sealed with the heat-soaked thin strip, so foam insulation will not damage the door back plate. When filling the door with material,
This prevents the foam insulation material from leaking to the outside.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of a refrigerator with a door showing an embodiment of the present invention, Figure 2 is an enlarged sectional view of the main parts of the same boat, and Figure 3 is a second
It is an enlarged sectional view of the main part of the conventional refrigerator door corresponding to the figure. 1...Main body, 2...Door, 3...
・Door top plate, 3a...flange, 4...door back plate, 4a...groove, 4b...curved edge, 4c...
...Brim section, 5.. Foamed insulation material, 6.. Heater, 7.. Heat-soaked ribbon, 8. Curved gasket.

Claims (1)

[Scope of utility model registration request] A steel door face plate with a dish-shaped flange whose periphery is bent inward, and a synthetic resin door back plate with a groove protruding from the periphery and the edge of this groove extending further toward the outer circumference to form the flange. A plate is provided, an electric heater is arranged at the inner corner of the door back plate, the electric heater is covered with a thin heat transfer strip such as aluminum foil, and the thin heat transfer strip is wrapped around the entire periphery of the flange of the door front plate. and a gasket is fitted to the thin part of the door back plate,
This protruding groove is fitted into the opening of the door front plate, and the flange of the door front plate and the door back plate are overlapped via the heat transfer ribbon, and the door front plate and the door A refrigerator door made by filling foam insulation material between the back plate.