JP3403999B2 - Storage structure of refrigerator etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage opening structure for assembling a heat insulating panel or for ensuring the airtightness of a refrigerator having a wall surface having a heat insulating structure.

[0002]

2. Description of the Related Art A large airtight mechanism, such as a refrigerator of a large installation type, is provided with a proper airtight mechanism to prevent air flow due to a temperature difference between the inside and the outside when the door is closed and to reduce energy loss. The opening and closing door with is adopted. In the airtight mechanism, the structure in which the opening and closing door is in close contact with the inside of the storage opening results in high manufacturing cost. In the case where it is provided, the rubber tongue-like packing body that abuts the facing side and the packing with a bulging flexible structure are provided at the facing part of the front side) It is provided. That is, the entire circumference of the storage opening is surrounded by packing, or three circumferences except the bottom of the storage opening are surrounded, and a flexible skirt is provided at the bottom part to block airtightness.

However, if the tongue-shaped packing body alone is cut off, it is difficult to say that the heat insulating thickness (heat cutoff distance) is small and the airtightness and the heat insulating effect are excellent. Moreover, the airtightness is poor due to the wear of the tip edge of the tongue piece due to secular change due to repeated opening and closing operations. Further, although the bulging packing type heat insulating structure can secure airtightness for the opening / closing door of the swinging rotation, it is not suitable for the opening / closing door of the slide opening / closing.

Therefore, the present invention proposes a storage structure such as a refrigerator which is excellent in heat insulation effect and airtightness.

[0005]

According to the present invention, there is provided an opening structure for a refrigerator or the like, in which an opening / closing door for covering the opening of the refrigerator or the like and one of facing portions of the opening and closing door are provided with two rows of inner and outer bulging strips. Is provided with a heat-insulating material, and the other is provided with rubber-like flexibility and is positioned in the middle of the inner and outer bulging strips.
With a U-shaped packing body that comes into contact with the ridge surface and flexibility
A predetermined space is formed between the U-shaped packing body and
As described above , a packing portion having a tongue-shaped packing body that comes into contact with the inner and outer surfaces of the bulging strip is provided.

Therefore, when the opening / closing door is closed, the heat insulating and airtight action of the outer tongue-like packing body and the outer peripheral bulge, the heat and airtight action of the U-shaped packing body, the inner tongue-like packing body and the inner circumferential side Three stages of adiabatic airtight action with the bulging strip are performed to ensure sufficient thermal insulation, and the contact between the inner and outer peripheral tongue pieces and the inner and outer peripheral bulging strips is due to the line of the edge of the tongue piece. The surface contact is made instead of the contact, and a further adiabatic airtight function is secured.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described. The embodiment shows an example in which the present invention is applied to a door of a refrigerator, which is a so-called barrier-free opening / closing door A having flat inner and outer floor surfaces, and an opening / closing door 1 for sliding opening / closing.

The refrigerator has a combination of heat-insulating wall surfaces (heat-insulating panels) B, and a storage opening (doorway) A has a structure in which a part of the wall surface B is hollowed out.
Built in. And the heat insulation door 1 has the doorway A
In addition to closing the entire surface of the vehicle, a peripheral portion thereof faces the frame 2 portion, a wheel 11 is provided on the upper portion, and the wheel 11 is hung on a rail C arranged above the doorway A so as to be opened and closed.

The present invention is characterized by a heat-insulating and airtight structure at a location where the opening / closing door 1 and the frame 2 face each other.
The receiving part 3 is provided on the side, and the packing part 4 is provided on the opening / closing door 1 side.
Is provided. The receiving part 3 is a long resin product, cut to an appropriate length, and fixed to the outer edge side corner of the frame 2 by an appropriate means such as a screw or an adhesive. Is provided with L-shaped mounting surfaces 31 corresponding to the outer edge side corners of the frame 2, and two rows of inner and outer perforated ridges 32, 33 facing the opening / closing door 1 when fixed to the frame 2. The inner peripheral bulge 32 is higher than the outer peripheral bulge 33 (opening / closing door 1
Projecting to the side). Further, if both the bulging strips 32 and 33 are hollow bodies, the weight and the heat insulating function can be improved.

The packing portion 4 is attached to the opening / closing door 1 facing the receiving portion 3 fixed to the frame 2, and includes a packing holding portion 41 and a U-shaped packing body 42 in which a base portion is mounted on the packing holding portion 41. And inner and outer tongue-shaped packing bodies 43 and 44. The packing holding portion 41 is, like the receiving portion 3, used by cutting a resin-made long object to an appropriate length, has a concave shape with a missing bottom side, and protrudes when attached to the opening / closing door 1. On the surface (the surface facing the receiving portion 3), a large number of connecting recesses 411 having a large depth are provided.

Further, each packing body 42, 43, 44 is a belt-shaped body made of rubber and having appropriate flexibility, and the U-shaped packing body 42 has its both end bases fitted in the connection recess 411 to form a door. When closed, it is formed between the bulging strips 32 and 33 of the receiving portion 3 and is in contact with both surfaces of the bulging strips 32 and 33. Further, the tongue-shaped packing bodies 43 and 44 are U-shaped.
The front and rear (inside and outside) of the attachment part of the packing 42,
The one end is fitted into the base connecting recess 411, and the projecting length thereof can be brought into contact with the side surfaces of both the bulging strips 32 and 33 of the holding portion 3.

In particular, the opening / closing door 1 is filled with a heat insulating material (generally foamed resin) 12 inside, and the surfaces thereof are thin metal plates 13 and 14.
In the case of being covered with, the heat blocking member 5 is provided at the mounting position of the packing holding portion 41 so as to reduce the heat loss due to the heat conduction between the side surface of the entrance A and the outer surface.

The heat blocking member 5 is used by cutting a long member in the same manner as the receiving portion 3 and the packing portion 4 described above, and has a π-shaped cross section with a predetermined interval. The leg portion 51 of the book is provided with a fitting groove 52 for connection from the front surface side. By inserting the end edges of the outer metal plates 13, 14 on the front and back sides of the opening / closing door into the fitting groove 52, both plates 13, 14 are inserted. The heat shield member 5 is interposed between the gaps.

Further, since the storage opening is barrier-free, it is not possible to provide the receiving portion 3 and the packing portion 4 at the bottom of the entrance A, so that the packing holding portion 41 can be opened and closed. And a plurality of tongue-shaped packing bodies 45 having an appropriate width are attached in a skirt shape in multiple layers inside and outside.

In the opening / closing door 1, the wheels 11 open / close the entrance / exit A by the automatic traveling or the manual traveling of the wheels 11 on the rails C. When the wheels 11 are closed, the inner bulging strip 32 of the receiving portion 3 is opened.
Inner side surface of the tongue-shaped packing body 43 of the packing portion 4
Abut against each other to block the flow of the inside and outside air, and
A U-shaped packing body 4 is provided in the recess formed between the two and 33.
2 is located, and the U-shaped packing body 42 abuts the surface of the bulging strip to block the flow of internal and external air, and the outer bulging strip 33
The outer tongue-shaped packing body 44 abuts on the outer surface thereof to block the flow of internal and external air.

Therefore, when the entrance / exit A of the refrigerator is closed by the opening / closing door 1, the surroundings of the entrance / exit A (three circumferential portions except the bottom) are blocked by the receiving portion 3 and the packing portion 4 in a multiple flow manner. Therefore, the airtightness that can sufficiently withstand the pressure difference between the inside and outside of the refrigerator can be ensured, and the hollow structure of the bulging strips 32 and 33 and the hollow structure of the U-shaped packing body 42 provide a multiple heat insulation structure with three chambers, which is excellent. It will have a heat insulation function. Of course, it also exhibits a sufficiently excellent effect in terms of blocking light.

Further, particularly when the present invention is applied to a freezer, if the contact portion between the receiving portion 3 and the packing portion 4 adheres due to freezing, the opening / closing operation of the opening / closing door 1 may be hindered. In such a case, it is solved by forming the holding portion 41 of the packing portion 4 from an extruded aluminum material and incorporating a heat generating structure such as an electric heater wire into the internal space formed between the holding portion 41 and the opening / closing door 1. .

The present invention is not limited to the above-mentioned embodiment, and the entrance and the exit have a frame of four laps, and the receiving part and the packing part may be arranged on four laps. It is not limited to opening and closing slides, but can also be used for opening and closing doors with a slanting opening and closing structure.

[0019]

As described above, according to the present invention, an opening / closing door for covering a storage opening of a refrigerator or the like and a receiving portion formed of a heat insulating material having two rows of inner and outer peripheral bulging lines are provided between the storage opening peripheral portion. Installed in
On the other hand, a U-shaped packing body having rubbery flexibility and abutting on the middle of the bulging strip, and an inner and outer tongue-shaped packing body having a flexibility to abut both side surfaces of the inner and outer bulging strips. The storage structure is provided with a packing part, and the heat insulating and airtight function between the inside and outside of the storage when the door is closed is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an opening / closing door according to an embodiment of the present invention.

FIG. 2 is an explanatory view of members of the packing holding portion.

FIG. 3 is an explanatory view of members of the receiving portion.

FIG. 4 is an explanatory view of the same usage state (cross-sectional view of the doorway and opening / closing door).

FIG. 5 is an explanatory view of the same usage state (enlarged view of a main part of FIG. 4).

[Explanation of symbols]

A doorway 1 open / close door 11 wheels 12 Insulation 13,14 Thin metal plate 2 frame 3 Receiver 31 L-shaped mounting surface 32 Inner peripheral bulge 33 Peripheral bulge 4 Packing part 41 Packing holder 411 Connection recess 42 U-shaped packing body 43 Inner tongue packing 44 Outer tongue packing 45 Skirt-shaped tongue packing 5 Heat blocking member 51 legs 52 Fitting groove

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F25D 23/02-23/08

Claims (3)

(57) [Claims] 1. An opening / closing door for covering a storage opening of a refrigerator or the like, and a receiving portion formed of a heat insulating material having two rows of bulging strips on the inner and outer circumferences are provided on one of the facing portions of the opening and closing door and the peripheral portion of the storage opening. place in the middle of the inside and outside bulging Article provides the flexibility of rubber
U-shaped packing body that is placed and contacts the surface of the bulging strip, and flexibility
And a predetermined space is formed between the U-shaped packing body and
Tongue-like packing that abuts the inner and outer surfaces of the bulging strip
A storage opening structure for a refrigerator or the like, characterized in that a packing portion having a casing body is provided. 2. An opening / closing door having an outer surface formed of a metal plate and having a heat insulating material filled in the inside to form a heat insulating structure, wherein a fitting groove for connecting the outer surface metal plate is provided on both sides with a predetermined width. With a long heat-insulating member made of resin, connect the outer metal plates on the front and back of the opening / closing door at the location facing the surrounding area of the warehouse,
2. The compartment structure for a refrigerator or the like according to claim 1, wherein either the receiving portion or the packing portion is provided at the heat-shielding member disposition location. 3. A storage opening structure for a refrigerator or the like according to claim 1 or 2, wherein a holding portion for holding a base portion of each packing body in the packing portion is formed of an extruded aluminum material and has a heat generating structure incorporated therein.