JP2018044756A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator suppressing heat intruding into the refrigerator from the outside of a heat insulation box through its opening part.SOLUTION: A refrigerator includes: a heat insulation box having an opening part and a double structure of an outer box and an inner box; a door part engaged with the heat insulation box; and a gasket located between the heat insulation box and the door part. An engagement part of the outer box and the inner box is outside a position where the gasket is fixed to the heat insulation box. The gasket and the heat insulation box are connected via a magnetic body fixed to the heat insulation box and a magnet disposed to the gasket.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the structure of a heat insulating box of a refrigerator.

  A conventional refrigerator is composed of a heat insulating box and a door, and the front opening of the heat insulating box is engaged with a metal outer box such as an iron plate and a resin inner box, and between the outer box and the inner box. The structure is filled with foam insulation.

  FIG. 8 is a front view of a conventional refrigerator described in Patent Document 1, and FIG. 9 is an enlarged cross-sectional view of a joint portion between a door and a main body of the conventional refrigerator described in Patent Document 1.

  As shown in FIG. 8, the refrigerator 1 includes a heat insulating box 10, a rotary refrigerator compartment door 20 at the front opening, drawer-type freezer compartment doors 52 a, 52 b, 52 c, and a drawer-type vegetable. A chamber door 55 is provided. The structure of these door parts is the same except for the dimensions. The joint part of the door part 20 and a main body is demonstrated using FIG.

  The heat insulating box 10 is obtained by foaming and filling a heat insulating material 9 between a metal outer box 11 such as an iron plate and a resin inner box 12 such as ABS.

  The door portion 20 is provided with a bent portion 31 for coming into contact with the magnet gasket 90 and a bent portion 32 called the second flange for engaging the inner box 12.

  The door portion 20 is obtained by foaming and filling a heat insulating material 9 between a door portion outer plate 21 and a door portion inner plate 22 formed of ABS resin or PS resin, and a magnet gasket 90 is fitted into the door portion inner plate 22. ing.

  The magnet gasket 90 includes a magnet chamber 93 and a bag portion 94, and a magnet 92 is embedded in the magnet chamber 93.

  The magnet 92 of the magnet gasket 90 forms a sealed structure together with the heat insulating box 10 by adsorbing to the bent portion 31 at the front of the outer box of the heat insulating box 10 when the door 20 of the refrigerator compartment is closed. And prevent heat from entering from outside the refrigerator (leakage of cold air).

  FIG. 10 is an enlarged cross-sectional view of the vicinity of the opening of the refrigerator using the conventional opening described in Patent Document 2.

  The heat insulation box 10 is obtained by foaming and filling a heat insulating material 9 between a metal outer box 41 such as an iron plate and a resin inner box 42 such as ABS. There is no bent structure, and the outer box 41 and the inner box 42 are bonded to each other by the fixing member 105 at the outer box flat part 41a and the inner box flat part 42a.

  About the structure of the door part 20, the magnet (not shown) of the magnet gasket 90 is flat in the outer box of the heat insulation box 10 when the door part 20 of the refrigerator compartment is closed. By adsorbing to the portion 41a, a sealed structure is formed together with the heat insulating box 10 to prevent heat from entering from outside the refrigerator (cold air leakage).

JP 2011-237116 A JP 2013-185713 A

  However, the conventional opening described in Patent Document 1 (FIGS. 8 and 9) cannot prevent heat from entering. In the metal outer box 11, the adsorbing portion with the magnet gasket 90, that is, the first flange portion (folded portion 31) is exposed in the chamber having a low temperature zone, and the path A in FIG. Heat enters the cabinet. Similarly, the second metal flange portion (folded portion 32) has a structure approaching the inside of the cabinet having a low temperature zone, and passes through the heat insulating material 9 and the inner box 12 along the path B in FIG. External heat enters the cabinet.

Moreover, in the conventional opening part described in patent document 2 (FIG. 10), since there is no flange part like patent document 1, there is no penetration | invasion of the heat from a bending part. However, the metal outer box 11 is exposed to the magnet gasket 30, that is, the outer box flat part 41 a, and is exposed in the low temperature zone, and as in the case of Patent Document 1, A in FIG. In this path, heat outside the cabinet enters the cabinet. (In both Patent Document 1 and Patent Document 2, the metal of the outer box 11 having high thermal conductivity is exposed to the inside at the adsorption portion of the magnet 92 of the magnet gasket 90.)
This invention solves the said conventional subject, and it aims at providing the heat insulation box which can reduce the heat penetration | invasion amount from an opening part, and can improve the heat insulation performance of a refrigerator.

  In order to achieve the above object, an insulating box body having an opening and having a double structure of an outer box and an inner box, a door portion combined with the heat insulating box body, and the heat insulating box body and the door portion. The refrigerator which is an outer side from the position where the said gasket is fixed to the said heat insulation box body is used for the engaging part of the said outer box and the said inner box.

  According to the present invention, the heat insulation performance of the opening portion of the heat insulation box is improved, the heat penetration amount from the front of the outer box having a large amount of heat penetration from the outside in the heat insulation box body is reduced, and the heat insulation / cooling effect is improved. Can be made into a refrigerator with high thermal insulation performance.

The expanded sectional view near the opening part of the heat insulation box in Embodiment 1 (A) The perspective view which shows the structure of the outer box of the heat insulation box in Embodiment 1, (b) The perspective view which shows the structure of the inner box of the heat insulation box in Embodiment 1 (A) The perspective view which shows the combination of the inner case and magnetic body in Embodiment 1, (b) The partial expanded sectional view of (a) (A) The perspective view of the heat insulation box of Embodiment 1, (b) In the combination of the outer box and inner box of the heat insulation box in Embodiment 1, sectional drawing which shows engagement of a long hole part and a projection part, (C) Sectional drawing which shows engagement of a hole-less part and a protrusion-less part in the combination of the outer box and inner box of the heat insulation box in Embodiment 1. (A) The perspective view of the heat insulation box body of Embodiment 1, (b) In the structure of the outer box of the heat insulation box body, the engagement part of an inner box, and a partition plate in Embodiment 1, of a long hole part and a projection part The figure which shows engagement, (C) The figure which shows the engagement of a holeless part and a protrusion-less part in the structure of the outer casing of the heat insulation box in Embodiment 1, the engaging part of an inner box, and a partition plate The expanded sectional view near the opening part of the heat insulation box in Embodiment 2 The expanded sectional view near the opening part of the heat insulation box in Embodiment 3 The figure which shows the conventional refrigerator in patent document 1 Enlarged sectional view of the vicinity of the opening of the conventional heat insulation box in Patent Document 1 Enlarged sectional view of the vicinity of the opening of the conventional heat insulation box in Patent Document 2

  Hereinafter, embodiments will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an enlarged cross-sectional view of the vicinity of a joint between a refrigerator door and a heat insulating box. The door is combined with the opening of the heat insulating box.

<Configuration of refrigerator 1>
In FIG. 1, a heat insulating box 10 of the refrigerator 1 is obtained by foaming and filling a heat insulating material 9 between a metal outer box 101 such as an iron plate and a resin inner box 102 such as ABS. The outer box 101 includes an inner box outer box joint region 111 that joins the inner box 102 at the end. Similarly, the inner box 102 includes a door heat insulating box joint region 112.

  The inner box / outer box joint region 111 is a region where the inner box 102 and the outer box 101 are joined, and in this case, the inner box 102 and the outer box 101 overlap each other. The door heat insulation box joining area | region 112 is an area | region where the door part 20 and the heat insulation box 10 are joined, and is the area | region where the magnet chamber 93 and the magnetic body 60 overlapped in this case.

<Configuration of outer box 101 and inner box 102>
The outer box 101 has an inner box / outer box joint region 111 formed by integrally bending the outer surface of the heat insulating box 10. The inner box / outer box joint region 111 forms an opening surface of the opening 2 on the front surface of the refrigerator 1.

  The inner box 102 is formed by vacuum forming, and has a folded door heat insulating box bonding region 112 and a further bent inner box outer box bonding region 111.

<Structure of inner box 102>
The back surface of the inner box 102 (on the side of the heat insulating material 9) is magnetically bonded by an adhesive member (not shown) formed of an adhesive or double-sided tape at a position where the magnet 92 of the magnet gasket 90 faces when the door portion 20 is closed. A body 60 is installed.

<Position and Structure of Inner Box Outer Box Joining Region 111 and Door Insulated Box Joining Region 112>
FIG. 2A shows the structure of the outer box 101 of the heat insulation box in the first embodiment. In the inner box / outer box joint region 111 of the outer box 101, a holed portion 111a having a plurality of elongated holes and a holeless portion 111b are alternately provided.

  FIG. 2B shows a structure of the inner box 102 of the heat insulating box in the first embodiment. In the door heat insulation box joining region 112 of the inner box 102, a plurality of protrusion-provided portions 112a and no-protrusion portions 112b are alternately provided at the same interval as the installation interval of the hole-provided portion 111a. The outer box 101 and the inner box 102 are firmly fixed by inserting the protrusions 112a into the holes of the part 111a.

  Contrary to the above, the holed portion 111a and the protruding portion 112a may be respectively provided in the inner box 102 and the outer box 101.

  By firmly fixing the outer box 101 and the inner box 102, the waving and warping of the inner box 102 at the opening 2 can be suppressed. Moreover, the magnet gasket 90 of the door part 20 can contact | abut to the inner box 102 flatly. Further, heat intrusion due to floating of the magnet gasket 90 can be suppressed.

  As shown in FIG. 1, the inner box / outer box joint region 111 is located outside the door (outside air side, opening) than the door heat insulating box joint region 112, which is a contact portion between the magnetic body 60 and the magnet 92 of the magnet gasket 90. 2 outside). In this structure, the magnetic body 60 is installed in the door heat insulating box joining region 112, and the magnet 92 of the magnet gasket 90 disposed on the door portion 20 is attracted to the magnetic body 60. By providing the magnet 92 and the magnetic body 60 to attract and close the heat insulating box and the door, the metal plate of the outer box 101 is exposed to the inside of the box, and heat outside the box enters the box. (Intrusion of heat through the path A in FIGS. 9 and 10 can be prevented).

  About the refrigerator comprised as mentioned above, the manufacturing method and an effect | action are demonstrated below.

<Installation of the magnetic body 60 in the inner box 102>
First, as shown in FIGS. 3 (a) and 3 (b), a magnetic body 60 is applied to an adhesive member (not shown) formed of an adhesive or double-sided tape inside the inner box 102 formed by vacuum molding. Install.

  FIG. 3A is a perspective view of the inner box 102, and FIG. 3B is an enlarged cross-sectional view of the door heat insulating box joining region 112 of the inner box 102.

<Incorporation of inner box 102 into outer box 101>
Next, as shown in FIG. 2B, the inner box 102 is turned over. The inner box / outer box joint region 111 of the outer box 101 shown in FIG. 2 (a) has a plurality of holes 111a. A plurality of protrusion-provided portions 112a arranged at the same interval as the hole-provided portion 111a are inserted into the plurality of hole-provided portions 111a. As a result, the inner box 102 is incorporated into the outer box 101.

<Incorporation of bottom plate 13 and partition plates 14a, 14b, 14c, 14d>
FIG. 4A is a perspective view of the heat insulation box 10. FIG. 4B and FIG. 4C are cross-sectional views of the engagement portion between the inner box 102 and the outer box 101.

  As shown in FIG. 4A, the bottom plate 13 is incorporated into the heat insulating box 10. At this time, the structure of the holed portion 111a (protruded portion 112a of the door insulation box bonded region 112) and the holeless portion 111b (protruded portion 112b) of the inner box / outer box bonded region 111 are respectively shown in FIG. 4 (b) and FIG. 4 (c).

  Next, as shown in FIG. 5A, which is a perspective view of the heat insulation box 10, the partition plates 14 a, 14 b, 14 c, and 14 d that partition the rooms having different temperature zones of the refrigerator are incorporated into the heat insulation box 10.

<Filling of foam insulation 9 and installation of back plate>
As shown in FIGS. 5 (b) and 5 (c), which are cross-sectional views of the engagement portion between the inner box 102 and the outer box 101, heat insulation of foam from the rear of the refrigerator (the back side of the opening 2 of the heat insulating box). The material 9 is filled to complete the heat insulating box 10.

  The refrigerator 1 is completed by assembling the door part 20 in the heat insulation box 10 comprised as mentioned above.

<Effect of Embodiment 1>
As shown in FIG. 1, the inner box / outer box joint region 111 is installed on the outer side (outside air side) than the door heat insulating box joint region 112 at the contact portion between the magnetic body 60 and the magnet 92 of the magnet gasket 90. Yes. Conventionally, the magnet 92 of the magnet gasket 90 is adsorbed to the metal of the outer box, and the heat insulating box and the door are closed. The magnetic box 60 is attracted to provide a heat-insulating box body and a door closing property. As a result, the outer box metal is exposed to the inside of the box, and heat outside the box can be prevented from entering the box (heat can be prevented from entering through the path A in FIGS. 9 and 10). .

  In addition, when the inner box outer box joining area | region 111 and the door heat insulation box joining area | region 112 overlap, it judges at each center. It is necessary that the joint center 71 between the inner box and the outer box be outside the joint center 72 (joint center between the magnet and the magnetic body) between the door and the heat insulating box.

(Embodiment 2)
FIG. 6 is an enlarged cross-sectional view of the vicinity of the opening 2 of the heat insulating box 10 of the refrigerator. In addition, the same code | symbol is attached | subjected about the structure same as Embodiment 1, and detailed description is abbreviate | omitted. Matters not described are the same as those in the first embodiment.

  The difference from the first embodiment is that, as shown in FIG. 6, the inner box / outer box joint region 111 is filled with a gap between the engaging portions by an adhesive member 106 formed of an adhesive or a resin filler. .

  Thereby, the wave and warp of the inner box 102 at the opening 2 can be suppressed, and leakage of the heat insulating material 9 into the opening 2 after filling with the foamable heat insulating material 9 can be suppressed.

(Embodiment 3)
FIG. 7 is an enlarged cross-sectional view of the vicinity of the opening 2 of the heat insulating box of the refrigerator. In addition, the same code | symbol is attached | subjected about the structure same as Embodiment 1, and detailed description is abbreviate | omitted. Matters not described are the same as those in the first embodiment.

  In the third embodiment, the inner box / outer box joint region 111 is different from the first embodiment.

  The inner box 102 or the outer box 101 in the inner box / outer box joint region 111 is provided with a magnetic body 61 attached with an adhesive member (not shown) formed of an adhesive or a double-sided tape.

  The inner box outer box joint region 111 is firmly fixed by the magnetic force, so that the inner box undulation and warpage at the opening 2 can be suppressed, and the magnet gasket 90 of the refrigerator compartment door 20 can be abutted flatly. Heat intrusion due to floating of the magnet gasket 90 can be suppressed.

  The refrigerator according to the present invention is a heat-insulating box body in which a metal outer box such as an iron plate and a resin inner box are engaged, and any refrigeration equipment having a closing mechanism with a magnet gasket (commercial refrigerators, commercial refrigerators, wines). It can be used to improve the thermal insulation of cellars).

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Opening part 9 Heat insulation material 10 Heat insulation box 11 Outer box 12 Inner box 13 Bottom plate 14a Partition plate 20 Door part 21 Door part outer plate 22 Door part inner plate 30 Magnet gasket 31 Folding part 32 Folding part 41 Outer box 41a Outer box flat part 42 Inner box 42a Inner box flat part 52a Freezer compartment door part 55 Vegetable room door part 60 Magnetic body 61 Magnetic body 90 Magnet gasket 92 Magnet 93 Magnet room 94 Bag part 101 Outer box 102 Inner box 105 Fastening member 106 Adhesive member 111 Inner box outer box joint area 111a Hole-provided part 111b No hole part 112 Door heat insulation box joint area 112a Protrusion part 112b Protrusion-free part

Claims (11)

An insulating box having an opening and having a double structure of an outer box and an inner box;
A door portion combined with the heat insulation box,
Including a gasket positioned between the heat insulation box and the door,
The inner box / outer box joint region between the outer box and the inner box is a refrigerator that is outside the heat insulating box body than a door heat insulating box joint region in which the door portion and the heat insulating box body are joined. The refrigerator according to claim 1, wherein the inner box / outer box joint region of the outer box is a portion where an end of the outer box is bent inward. The refrigerator according to claim 1 or 2, wherein the inner box outer box joint region of the inner box is a portion in which an end portion of the inner box is bent inward. The refrigerator according to any one of claims 1 to 3, wherein the door heat insulating box joint region is a region where the gasket is fixed to the heat insulating box. The refrigerator according to any one of claims 1 to 4, wherein a center of the inner box outer box joint region is outside the heat insulating box body from a center of the door heat insulating box joint region. The refrigerator according to any one of claims 1 to 5, wherein the inner box outer box joint region and the door heat insulation box joint region do not overlap. The refrigerator according to any one of claims 1 to 6, wherein the door heat insulating box joining region is a region connected by a magnetic body fixed to the heat insulating box and a magnet disposed on the gasket. The refrigerator according to any one of claims 1 to 7, wherein the outer box is a metal plate, and the inner box is a resin material. In the inner box / outer box joint region, a portion where the hole of the outer box and the protrusion of the inner box engage, or a protrusion of the outer box and the hole of the inner box engage The refrigerator according to any one of claims 1 to 8, which is a part. The refrigerator according to any one of claims 1 to 9, wherein the inner box / outer box joint region is engaged through a magnetic body. The refrigerator according to any one of claims 1 to 10, wherein the inner box / outer box joint region is covered with an adhesive.

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