JP2001304750A - Opening-structure of refrigerator and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening structure where the air-tightness, heat- insulation, and light-shielding characteristics are improved between the opening of a refrigerator and the like and a door. SOLUTION: A receiving part 3 of heat-shielding material which is provided with two swollen streaks, inside and outside circumferences, is provided to one of counterparts between a door 1 which covers an opening-fringe (entrance) A of a refrigerator and the like and a fringe part of an opening (architrave 2) while the other is provided with rubber-like flexibility. Further, a packing part 4 is provided which comprises a U-shaped packing body 42 which hits the intermediate part of the swollen streaks and tab-like inner/outer packing bodies 43 and 44 comprising flexibility which hit both side surfaces of the inner and outer swollen streaks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art An opening of a large-sized refrigerator or the like has a proper airtight mechanism in order to prevent air flow due to a temperature difference between the inside and outside when closing and to reduce energy loss. An opening / closing door with is provided. The above-mentioned airtight mechanism employs a structure in which the opening / closing door is in close contact with the inside of the storage opening, which requires high manufacturing accuracy. Therefore, an opening / closing door larger than the opening is adopted, and the back side of the opening / closing door (the opening / closing door is located inside the storage opening). If provided, a rubber tongue-shaped packing body or a bulging flexible structure that comes into contact with the facing side is applied to the facing part between the front side and the periphery of the storage opening (a place proved to be a frame). It is provided. That is, the entire circumference of the storage opening is surrounded by packing, or the three circumferences except the bottom of the storage opening are surrounded, and a flexible skirt is provided at the bottom to seal off airtightly.

[0003] However, when the above-mentioned tongue-shaped packing body alone is cut off, it is difficult to say that the heat insulation thickness (heat cutoff distance) is small and the airtightness and the heat insulating effect are excellent. Also, the airtightness is deteriorated due to the wear of the leading edge of the tongue piece due to aging due to the repetition of the opening and closing operations. In addition, the heat-insulating structure of the bulging packing type can be said to be able to secure airtightness with respect to an opening / closing door that is pivoted, but is not suitable for a sliding opening / closing door.

Accordingly, the present invention proposes a storage opening structure of a refrigerator or the like which is excellent in heat insulation effect and airtightness.

[0005]

According to the present invention, there is provided a refrigerator or the like storage compartment structure comprising two rows of inner and outer bulging strips at one of the facing portions of an opening / closing door for covering a refrigerator or the like and a periphery of the storage compartment. A U-shaped packing body provided with a receiving portion formed of a heat insulating material and provided with rubber-like flexibility on the other side and abutting in the middle of the bulge, and a flexible body abutting on both side portions of the inner and outer bulges And a packing part having inner and outer tongue-shaped packing bodies having a characteristic.

Therefore, when the opening / closing door is closed, the outer tongue-shaped packing body and the outer bulging strip have an adiabatic airtight action, the U-shaped packing body has an adiabatic airtight action, and the inner tongue-shaped packing body and the inner circumferential side. Insulation and air-tightness at three stages of the heat-insulating and airtight action with the bulging strips are ensured, and sufficient heat-insulating properties are ensured. Instead of contacting, the surface is brought into contact, and a more adiabatic airtight function is ensured.

[0007]

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

[0008] The refrigerator is a combination of a heat insulating wall (heat insulating panel) B, and a storage opening (entrance) A has a structure in which a part of the wall B is hollowed out.
Incorporate. The heat-insulating door 1 is connected to the entrance A
And has a size such that a peripheral portion thereof faces the frame 2 and a wheel 11 is provided on an upper portion thereof, and is hung on a rail C disposed above an entrance A so as to be freely 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 picture frame 2 face each other.
A receiving part 3 is provided on the side, and a packing part 4 is provided on the opening / closing door 1 side.
Is provided. The receiving portion 3 is a long resin material, which is cut into appropriate lengths and fixed to the outer edge of the frame 2 at an outer edge side by an appropriate means such as a screw or an adhesive. Is provided with an L-shaped mounting surface 31 corresponding to an outer edge side corner of the frame 2 and two inner and outer rows of bulging strips 32, 33 at a position facing the opening / closing door 1 when fixed to the frame 2. The inner bulge 32 is higher than the outer bulge 33 (opening / closing door 1).
(Projecting to the side). When the inside of each of the bulges 32 and 33 is a hollow body, weight reduction and improvement of the heat insulation function are achieved.

The packing part 4 is attached to the opening / closing door 1 facing the receiving part 3 fixed to the frame 2 and includes a packing holding part 41 and a U-shaped packing body 42 having a base mounted on the packing holding part 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 long resin material into appropriate lengths, and is formed in a concave shape with no 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 connection recesses 411 having a large depth are provided.

Each of the packing members 42, 43 and 44 is a rubber-like band member having an appropriate flexibility and has a U-shaped packing member. At the time of closing, it is formed between the bulges 32 and 33 of the receiving part 3 and is in contact with the surfaces of the bulges 32 and 33. Furthermore, the tongue-shaped packing bodies 43, 44
Before and after (inside and outside) across the mounting point of the
One end thereof is fitted into the base connection concave portion 411, and the protruding length thereof can be brought into contact with the side surfaces of the bulges 32, 33 of the holding portion 3.

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

This 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 and has a π-shaped cross section and a predetermined interval. A connection fitting groove 52 is provided on the leg portion 51 from the front side, and the edges of the outer metal plates 13 and 14 on the front and back sides of the opening / closing door are inserted into the fitting groove 52, and the two plates 13 and 14 are inserted. The heat insulation member 5 is interposed in the interval.

Since the storage opening is barrier-free, the receiving portion 3 and the packing portion 4 cannot be provided at the bottom of the entrance A, so that the packing holding portion 41 is opened and closed. , And a plurality of tongue-shaped packing bodies 45 having appropriate widths are attached in a skirt shape in multiple layers inside and outside.

The opening / closing door 1 opens and closes the entrance A by means of the automatic running or manual running of the wheel 11 on the rail C.
And the inner tongue-like packing body 43 of the packing part 4
Abuts to block the flow of air inside and outside,
U-shaped packing body 4 is provided in the recess formed between
2 and the U-shaped packing body 42 comes into contact with the surface of the bulging strip to block the flow of air inside and outside, and furthermore, the outer bulging strip 33
And the outer tongue-shaped packing body 44 abuts to block the flow of the inside and outside air.

Therefore, when the door A of the refrigerator is closed with the door 1, the periphery of the door A (three peripheral parts except the bottom) is cut off by the receiving part 3 and the packing part 4 in a multiplex manner. Therefore, airtightness sufficient to 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 multi-insulation structure with three chambers. Insulation function will be provided. Of course, a sufficiently excellent effect can be obtained with respect to light blocking.

In particular, 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 and closing operation of the opening and closing door 1 may be hindered. In such a case, the problem 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 in an internal space formed between the opening and closing door 1. .

The present invention is not limited to the above-described embodiment, but has a structure in which the entrance and exit have a four-frame frame, and the receiving portion and the packing portion may be arranged in four circles. The present invention is not limited to the sliding opening and closing, but can be adopted also for the opening and closing door of the opening and closing structure.

[0019]

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

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram of members of the packing holding unit.

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

FIG. 4 is an explanatory view of the same use state (cross section of an entrance and an opening / closing door).

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

[Explanation of symbols]

 Reference Signs List A Door 1 Opening / closing door 11 Wheel 12 Heat insulating material 13,14 Thin metal plate 2 Picture frame 3 Receiving part 31 L-shaped mounting surface 32 Inner bulge 33 Outer bulge 4 Packing part 41 Packing holding part 411 Connecting concave part 42 U shape Packing body 43 Inner tongue-like packing body 44 Outer tongue-like packing body 45 Skirt-like tongue packing body 5 Heat blocking member 51 Leg 52 Fitting groove

Claims (5)

[Claims] 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 provided with two rows of inner and outer peripheral bulging strips is provided at one of facing portions of the opening and closing door and a peripheral portion of the opening. A U-shaped packing body having rubbery flexibility and abutting in the middle of the bulge, and a flexible inner and outer tongue-like packing body abutting on both side surfaces of the inner and outer bulges. A storage opening structure for a refrigerator or the like, which is provided with a packing portion. 2. The storage opening structure of a refrigerator or the like according to claim 1, wherein the bulging strip is a hollow body. 3. The inner bulge of the inner and outer bulges has a greater degree of protrusion than the outer bulge.
Storage structure of the refrigerator as described. 4. An opening / closing door having an outer surface formed of a metal plate and filled with a heat insulating material to form a heat insulating structure, wherein the opening / closing door has a predetermined width and is provided on both sides with a fitting groove for connecting the outer surface metal plate. With a long resin thermal insulation member, connect the outer metal plate on the front and back of the opening and closing door at the location facing the periphery of the storage opening,
4. A storage opening structure for a refrigerator or the like according to any one of claims 1 to 3, wherein one of a receiving portion and a packing portion is provided at the place where the heat shielding member is disposed. 5. A storage opening structure for a refrigerator or the like according to claim 1, 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 a heat generating structure is incorporated therein. .