CN1045641A

CN1045641A - Concave-convex type refrigeration constant temperature chamber door envelope

Info

Publication number: CN1045641A
Application number: CN 89101390
Authority: CN
Inventors: 郭军
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-12
Filing date: 1989-03-12
Publication date: 1990-09-26

Abstract

Concave-convex type refrigeration constant temperature chamber door envelope is the improvement to existing refrigerating box or insulating box flat type door envelope, the feature of this door envelope is to have jut on gasket, have to have depressed part on casing, jut embedded depressed part when door was closed, and formed two air chambers between jut and depressed part.The door envelope of this structure makes the diffusion channel of cold in the case that bigger variation take place, and has to increase the service life and energy-conservation characteristics.It is simple in structure, implements easily applied range.

Description

Concave-convex type refrigeration constant temperature chamber door envelope

The present invention is a kind of concave-convex type refrigeration constant temperature chamber door envelope, belongs to the improvement of refrigerating box or insulating box door sealing structure.

The door envelope of existing refrigerating box or insulating box (as domestic refrigerator, refrigerator etc.) mostly is the flat type structure, introduce in " refrigerating plant " book of writing according to Xi'an Communications University, " data proves, when (refrigerator) when chamber door is closed, has 70% cold to let out from crack between a door and its frame ".The gasket structure that proposes in No. 86203232 " a kind of totally enclosed type domestic refrigerator gasket " utility model patents that Patent Office of the People's Republic of China was authorized on August 5th, 1987, cut off the something lost cold that forms through the conduction of metal box body heat in the refrigerator, but the contact portion of gasket and casing remains the flat type structure, still unavoidably has certain cold to let out from crack between a door and its frame.

The objective of the invention is the door envelope of existing flat type structure is improved, a kind of concave-convex type refrigeration constant temperature chamber door envelope is provided, further reduce the cold that from crack between a door and its frame, leaks, to realize energy-conservation and to prolong the life-span that the refrigeration insulating box uses.

The invention is characterized in to have jut on gasket, have depressed part on the casing corresponding with it, the jut when door is closed on the gasket embeds the depressed part on the casing, forms the door sealing structure of concave-convex type, improves heat-insulating property.

Accompanying drawing 1 is the structural representation of an embodiment of the present invention, among the figure: 1 casing, 2 heat insulation layers, 3 gaskets, 4 magnetic adhesive tape, 5,6 juts, 7 depressed parts.Accompanying drawing 2 is door state diagrams when closing.

Below in conjunction with accompanying drawing the present invention is further described.

With reference to Fig. 1, the present invention is improved the shape of gasket (3) and magnetic adhesive tape (4), existing magnetic adhesive tape is prolonged certain size form a jut (6).The shape of casing (1) that simultaneously will be corresponding with it is also improved, and makes it have a depressed part (7).The state of door when closing as shown in Figure 2, at this moment, the concave surface 9 of depressed part closely contacts on the end face 8 of gasket jut and the casing, its shape and size should guarantee formation two air chambers (10,11) between jut and depressed part.Bigger variation has taken place in the diffusion channel of the cold when door is closed in refrigerating box or the insulating box, and as can be seen from Figure 2, cold will be through four points that turn round, four reflect heat faces and two air chambers from the leakage of crack between a door and its frame.This concave-convex type door sealing structure obviously weakens cold than the heat diffusion capabilities of existing flat type structure door envelope under equal temperature difference situation.

The present inventor has implemented a kind of concave-convex type refrigerator gasket, and when refrigerator doors was closed, jut embedded after the depressed part, and two gaps of formation are 2～3 millimeters air chamber between jut and depressed part.Compare with existing flat type refrigerator doors envelope, (the T value is 5.333662) under the ambient temperature conditions at the same time, the T calculated value of gained time coefficient is 15.0231, draws the conclusion (of pressure testing) of difference highly significant after relatively.Evidence, the heat insulating effect of this concave-convex type refrigeration constant temperature chamber door envelope have more obviously and improve, and have the advantages that to prolong refrigerator service life and saves energy, also will bring positive effect to the fresh-keeping and storing of food.

This door sealing structure is simple, implements easily applied range.

Claims

1, a kind of concave-convex type refrigeration constant temperature chamber door envelope, it is improvement to existing refrigerating box or constant temperature chamber door envelope, it is characterized in that on gasket (3), having jut (6), have depressed part (7) on casing corresponding with it (1), the jut when door is closed on the gasket embeds the depressed part of casing.