JP7144572B2 - refrigerator - Google Patents

Description

Embodiments of the present invention relate to refrigerators.

2. Description of the Related Art In order to improve heat insulation performance and save energy, a refrigerator is constructed by inserting a heat insulating material in a space between an outer box and an inner box that constitute a heat insulating box body serving as a refrigerator body. Further, a door for sealing an opening of a heat insulating box body of a refrigerator is also constructed by sandwiching a heat insulating material between an outer plate and an inner plate. Many refrigerators use urethane foam as a heat insulating material, but in recent years, vacuum heat insulating materials have come to be used instead of urethane foam. For example, Patent Literature 1 proposes a technique in which urethane foam and a vacuum heat insulating material are used together for the door of a refrigerator.

JP-A-2006-90649

A vacuum insulation material has a structure in which a core material is vacuum-packed with a thin outer wrapping film. This vacuum heat insulating material has better heat insulating performance than foamed urethane, but the outer wrapping film is easily damaged, and if it is scratched and damaged, the heat insulating performance drops significantly. When a vacuum heat insulating material is used for a heat insulator such as a revolving door of a refrigerator, if the vacuum heat insulating material is placed at a position where it touches a protruding part such as a hinge, the outer wrapping film may be damaged. If the size of the vacuum insulation material is reduced so that it does not interfere with protruding parts such as hinges, the space without insulation material increases inside the heat insulator. need to be more effective.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerator equipped with a heat insulator having a structure that protects the vacuum heat insulating material from protrusions such as hinges. there is

An embodiment is a refrigerator having a heat insulating body in which a heat insulating material is provided between an inner box and an outer box of a door that closes the opening of a heat insulating box having a front opening , wherein the heat insulating body A protrusion that protrudes toward the inside of the heat insulator and serves as an axis during opening and closing, a polygonal vacuum heat insulating material having an inclined portion in advance in the projecting direction of the protrusion, and the protrusion and the inclined portion. and a heat insulating material different from the vacuum heat insulating material disposed between them, wherein the protruding portion is pseudo-formed by the inclined portion, an extension line of one side of the vacuum heat insulation material, and an extension line of the other side of the vacuum heat insulation material. It is characterized by being located in an area where
Another embodiment is a refrigerator having a heat insulating body provided with a heat insulating material between an inner box and an outer box of a door that closes the opening of the heat insulating box having a front opening, wherein the heat insulating material is , a protrusion that protrudes toward the inside of the heat insulator and serves as an axis during opening and closing, a polygonal vacuum heat insulating material having an inclined portion in advance on the extension line of the protrusion, and the vacuum heat insulating material. a heat insulating material different from the vacuum heat insulating material, disposed between the projecting portion and the inclined portion positioned in a region pseudo-formed by an extension line of one side and an extension line of the other side; It is characterized by

1 is a perspective view of a refrigerator according to first to third embodiments; FIG. It is a perspective view of the state which removed the door of the said refrigerator. It is a cross-sectional view of a second freezer compartment door in the first embodiment. It is an exploded perspective view of a said 2nd freezer compartment door. It is the perspective view which looked at the state which mounted|wore the said 2nd freezer compartment door with the vacuum insulation material from the back of the outer plate. FIG. 4 is a plan view of the state in which the outer wrapping film of the vacuum heat insulating material is stretched; FIG. 4 is a plan view of the vacuum heat insulating material in a finished state; FIG. 4 is a cross-sectional view of an edge portion of the vacuum heat insulating material; It is a perspective view of a refrigerator compartment first door. It is sectional drawing of a refrigerating-compartment first door. It is a perspective view of a hinge receiving plate. Fig. 3 is an enlarged perspective view of a corner of the first door of the refrigerating compartment with the outer plate removed; It is an enlarged view of the corner part of the refrigerating compartment first door which removed the outer plate. It is an enlarged view of the corner|angular part of the refrigerating-compartment first door which removed the outer plate in 2nd Embodiment.

Embodiments will be described in detail below with reference to the drawings.

(First embodiment)
As shown in FIGS. 1 and 2, the refrigerator 1 according to the present embodiment includes a heat insulating box body 3 having a front opening and a plurality of compartments on the inside, and a plurality of compartments for sealing the openings on the front side of each compartment. and doors 21 to 26.

The heat insulating box 3 is constructed by sandwiching a vacuum heat insulating material 35 called a VIP (Vacuum Insulation Panel) as a heat insulating material between the inner box and the outer box over substantially the entire opposing surfaces thereof. In FIG. 2, the vacuum heat insulating material 35 on the right side plate of the refrigerator 1 is transparent for explanation, but the vacuum heat insulating material 35 is also arranged on the top plate, the bottom plate, the left side plate, and the rear plate. there is

The heat insulating box body 3 is divided into five compartments, namely, a refrigerating compartment 11, a vegetable compartment 12, an ice making compartment 13 and a first freezing compartment 14, and a second freezing compartment 15 in order from above. A double door type refrigerator compartment first door 21 and a refrigerator compartment second door 22 are attached to the opening on the front side of the refrigerator compartment 11 . In addition, drawer type vegetable compartment door 23, ice making compartment door 24, first freezing compartment door 25, A second freezer compartment door 26 is attached.

First, the second freezer compartment door 26 will be described as a representative for explaining the structure of the drawer type door. As shown in FIGS. 3 and 4 , the second freezer compartment door 26 includes an outer plate 31 , an inner plate 32 , a throat member 34 , a vacuum insulation material 35 , a gasket 37 and a handle 39 .

In the second freezer compartment door 26, a vacuum insulation material 35 is sandwiched between an outer plate 31 and an inner plate 32. A gasket 37 is fitted in the vicinity of the outer periphery, and a throat member 34 is fixed to the rear surface of the inner plate 32 . A handle 39 is attached to the front surface of the outer plate 31 .

As shown in FIG. 5, the outer plate 31 has a substantially box-like shape, and a plurality of screw-receiving projections 31a are formed on the inside of corners where the front plate and the side plates intersect, rising rearward. ing. A threaded hole 31b into which a screw is screwed is formed in the projecting portion 31a.

As shown in FIGS. 3 and 4, the inner plate 32 has a substantially box shape, and has a gasket receiving portion 32a on the rear side near the outer peripheral edge thereof, to which a gasket 37 is fitted. The gasket receiving portion 32a is a ridge that protrudes forward and has a groove that opens rearward (inside the refrigerator compartment), and is formed on the entire inner plate 32 in the vicinity of the outer peripheral edge. A screw hole 32b is formed in the front end face of the gasket receiving portion 32a at a position facing the screw hole 31b of the projecting portion 31a of the outer plate 31 when the outer plate 31 is mounted. In FIG. 3, the gasket receiving portion 32a has a substantially rectangular cross section, but other shapes such as a U shape may be used as long as the shape allows insertion of an insertion portion 37b of the gasket 37, which will be described later. good too.

As shown in FIGS. 6 to 8, the vacuum heat insulating material 35 has a structure in which an inorganic core material 101 such as glass wool is vacuum-packed with an outer wrapping film 105, and the outer wrapping film 105 contains projections, screws, metals, and hard plastics. Burrs and edges may break if touched. If the outer wrapping film 105 is torn, the vacuum state is released and the heat insulating effect is significantly reduced. As shown in FIG. 5, the outer plate 31 is formed with a plurality of projections 31a for receiving screws. The outer wrapping film 105 may come into contact with the screws 41 for fixing the film 32 to the outer plate 31 or burrs generated when the screws 41 are screwed into the screw holes 31b of the protruding portion 31a, and may be broken. As the outer wrapping film 105, a structure in which an aluminum foil and a resin film are sandwiched, or a structure in which the surface of a resin film is laminated by aluminum vapor deposition or the like can be used.

Therefore, in order to protect the outer wrapping film 105, the vacuum heat insulating material 35 in this embodiment is attached with an elastic member 36 wound around the outer periphery. The elastic member 36 is a material having a heat insulating effect, and for example, soft tape such as sponge tape can be used. Thus, by covering the outer peripheral portion of the vacuum heat insulating material 35 with the elastic member 36, the outer wrapping film 105 does not directly contact the projecting portion 31a of the outer plate 31, etc., thereby preventing the vacuum heat insulating material 35 from being damaged. can.

The vacuum heat insulating material 35 is disposed on substantially the entire inner opposing surfaces of the outer plate 31 and the inner plate 32, and is adhered to the rear surface of the outer plate 31 and the front surface of the inner plate 32 with an adhesive. . The inner plate 32 is fixed to the outer plate 31 by screws 41 in a state in which the front end surface (bottom portion of the groove) of the gasket receiving portion 32a of the inner plate 32 is close to the rear end surface of the projecting portion 31a of the outer plate 31. It is

The gasket 37 is a frame having a hollow air cushion portion 37a, and has an arrowhead-shaped insertion portion 37b. Further, the gasket 37 has a magnet 37c for magnetically attaching to the peripheral surface of the opening of the heat insulating box 3 on the rear surface of the air cushion portion 37a. The gasket 37 is made of a flexible material, and is attached to the inner plate 32 by pushing the insertion portion 37b into the gasket receiving portion 32a of the inner plate 32 using its flexibility.

The throat member 34 has a rectangular frame shape and is attached to the inner plate 32 by means of screws, claws (not shown), slide fitting, or the like. The throat member 34 is a member for preventing cold air from leaking from the heat insulating box body 3 by entering the heat insulating box body 3 and overlapping the inner surface of the heat insulating box body 3 when the second freezer compartment door 26 is closed. is. The inner hollow side of the throat member 34 is also filled in advance with a heat insulating material 43 such as expanded polystyrene.

Next, in order to explain the structure of the double door, the refrigerator compartment first door 21 will be described as a representative. In addition, members common to the above-mentioned drawer-type door are denoted by common reference numerals. As shown in FIGS. 9 and 10 , the refrigerator compartment first door 21 has an outer plate 31 , an inner panel 32 , a throat member 34 , a gasket fitting member 45 , and a refrigerator compartment second door 22 . A rotating member 33 closing the gap, a vacuum heat insulating material 35, a gasket 37, a handle 39, and a hinge receiving plate 55 are provided.

The outer plate 31 and the inner plate 32 are each flat box-shaped. The inner plate 32 is fixed to the outer plate 31 by being fitted inside the side wall of the outer plate 31 . In addition, a vacuum heat insulating material 35 is disposed inside the outer plate 31 and the inner plate 32 over substantially the entire opposing surfaces thereof. A throat member 34 is fixed to the surface of the inner plate 32 on the inner side of the refrigerator 1 by adhesion or the like. Outside the throat member 34 (except on the rotating member 33 side), a gasket fitting member 45 into which the gasket 37 is fitted is fixed to the outer plate 31 and the inner plate 32 by adhesion or the like. A rotating member 33 that closes the gap between the refrigerator compartment first door 21 and the refrigerator compartment second door 22 is rotatably connected to the vicinity of the end portion of the inner plate 32 on the refrigerator compartment second door 22 side. ing.

The refrigerating compartment first door 21 configured as described above has a hinge portion 50 near one side end of the top surface and the bottom surface. The hinge portion 50 is formed with an axial hole 51 through which the axial rod 19 of the heat insulating box body 3 passes, as shown in FIG. A hinge receiving plate 55 made of a highly rigid material such as metal is arranged inside the hinge portion 50, that is, in the vicinity of the inner corner portions of the outer plate 31 and the inner plate 32. As shown in FIG.

The hinge receiving plate 55 is a member that is pivotally attached to the shaft rod 19 when the refrigerating compartment first door 21 is rotatably attached to the heat insulating box body 3 . As shown in FIG. 11, the hinge receiving plate 55 is composed of an L-shaped flat plate 55a and a vertical plate 55b that rises perpendicularly to the flat plate 55a from one end of the flat plate 55a. A shaft hole 55c through which the shaft 19 passes is formed in the vertical plate 55b.

As shown in FIG. 12, the vacuum heat insulating material 35 in the refrigerator compartment first door 21 has a substantially rectangular parallelepiped shape, and the corners of the outer plate 31 and the inner plate 32 near the hinge portion 50 are cut off. , two adjacent corners are chamfered. In addition, the vacuum heat insulating material 35 has an outer dimension slightly smaller than the inner dimension of the inner plate 32 so that it can be inserted inside the inner plate 32 and fill the space inside the inner plate 32 as much as possible. It is said that By forming the vacuum heat insulating material 35 in this way, when the vacuum heat insulating material 35 is inserted inside the inner plate 32 , the vacuum heat insulating material 35 also enters between the upper and lower hinge portions 50 , and the inside of the inner plate 32 . It is possible to almost eliminate the space where the heat insulating material does not exist.

Further, the vacuum heat insulating material 35 is formed to be larger than the outside size of the throat member 34 in the refrigerator compartment first door 21, and is arranged over at least a wider range than the throat member 34 on the back surface of the surface to which the throat member 34 is fixed. It is That is, the throat member 34 and the vacuum heat insulating material 35 are superimposed on each other near the outer periphery of the vacuum heat insulating material 35 .

Further, as shown in FIG. 13, the vacuum heat insulating material 35 is adhered to the outer plate 31 and the inner plate 32 with an adhesive or the like. A portion of the plane plate 55 a of the hinge receiving plate 55 is inserted between the inner plate 32 and the vacuum heat insulating material 35 , and the hinge receiving plate 55 is adhered and fixed to the inner plate 32 together with the vacuum heat insulating material 35 .

In this way, the refrigerating compartment first door 21 in the present embodiment has a pair of adjacent corners of the vacuum insulation material 35 chamfered so that when the refrigerating compartment first door 21 is attached to the heat insulating box body 3 , it is axially aligned. It is possible to prevent the bar 19 from interfering with and contacting the vacuum heat insulating material 35 . Therefore, it is possible to prevent the outer wrapping film 105 of the vacuum heat insulating material 35 from being damaged by the shaft rod 19 . In addition, by chamfering a pair of adjacent corners of the vacuum heat insulating material 35, the vacuum heat insulating material 35 can be arranged between the upper and lower hinges 50 of the first door 21 of the refrigerating compartment, thereby enhancing the heat insulating effect. can be done.

Furthermore, the vacuum heat insulating material 35 in the refrigerator compartment first door 21 is formed to be larger than the outer size of the throat member 34, and is arranged over an area wider than the area surrounded by the throat member 34. It can enhance the heat insulation effect in the room.

Further, since the hinge receiving plate 55 is adhered and fixed to the inner plate 32 together with the vacuum heat insulating material 35, it is possible to reduce the number of manufacturing processes.

The refrigerator compartment second door 22 has the same configuration as the refrigerator compartment first door 21, and the same effect can be obtained. Also, the vacuum insulation material 35 in the refrigerating compartment first door 21 and the refrigerating compartment second door 22 may be configured to have a soft tape wrapped around them.

(Second embodiment)
Next, a second embodiment will be described. In addition, also in the following embodiments, common parts are described using common reference numerals. As shown in FIG. 14, the refrigerating compartment first door 21 in this embodiment has another heat insulating material 61 in the chamfered portion of the vacuum heat insulating material 35 in the above embodiment, that is, the space located inside the hinge part 50. It is characterized by being arranged. As another heat insulating material 61, urethane foam, styrene foam, sponge material, soft tape, or the like can be used.

By arranging the other heat insulating material 61 so as to fill the chamfered portion of the vacuum heat insulating material 35 in this manner, the heat insulating effect can be further enhanced.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

REFERENCE SIGNS LIST 1 refrigerator 3 heat insulation box 11 refrigerating compartment 12 vegetable compartment 13 ice making compartment 14 first freezing compartment 15 second freezing compartment 21 refrigerating compartment first door 22 refrigerating compartment second door 23 vegetable compartment door 24 ice making compartment door 25 first freezing compartment Door 26 Second freezer compartment door 31 Outer plate 31a Protruding portion 31b Screw hole 32 Inner plate 32a Gasket receiving portion 32b Screw hole 32c Protective wall 33 Rotating member 34 Throat member 35 Vacuum insulation material 36 Elastic member 37 Gasket 37a Air cushion portion 37b Insertion portion 37c Magnet 39 Handle 40 Adhesive 41 Screw 43 Heat insulating material 45 Gasket fitting member 50 Hinge portion 51 Shaft hole 55 Hinge receiving plate 55a Flat plate 55b Vertical plate 55c Shaft hole 61 Heat insulating material 101 Core material 105 Enveloping film

Claims (2)

A refrigerator having a heat insulating body in which a heat insulating material is provided between an inner box and an outer box of a door that closes the opening of the heat insulating box having a front opening ,
The heat insulator is
a protruding portion that protrudes toward the inside of the heat insulator and serves as an axis during opening and closing ;
a polygonal vacuum heat insulating material having an inclined portion in advance in the projecting direction of the projecting portion;
a heat insulating material different from the vacuum heat insulating material disposed between the projecting portion and the inclined portion;
with
The refrigerator according to claim 1, wherein the projecting portion is positioned in a region pseudo-formed by the inclined portion and an extension line of one side and an extension line of the other side of the vacuum heat insulating material. A refrigerator having a heat insulating body in which a heat insulating material is provided between an inner box and an outer box of a door that closes the opening of the heat insulating box having a front opening ,
The heat insulator is
a protruding portion that protrudes toward the inside of the heat insulator and serves as an axis during opening and closing ;
a polygonal vacuum heat insulating material in which an inclined portion is provided in advance on the extension of the projecting portion;
Heat insulation different from the vacuum heat insulating material, which is disposed between the projecting portion and the inclined portion located in a region pseudo-formed by an extension line of one side of the vacuum heat insulation material and an extension line of the other side of the vacuum heat insulation material. material and
A refrigerator comprising:

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