JP2015001340A - Vacuum heat insulation material and refrigeration using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that since a heat radiation pipe is covered with a vacuum heat insulation material provided by crossing a first groove with a second groove, even small irregularities in the vacuum heat insulation material inhibit fluidization of a foam heat insulation material such as urethane, and foaming failure and appearance change of a refrigerator with the foaming failure occur.SOLUTION: The rear faces of a first groove part 15 and a second groove part 16 are formed into a substantially plane surface. Consequently, the vacuum heat insulation material can be disposed even in the inside of a storage at a turning portion of a heat radiation pipe 14 without projecting the heat radiation pipe 14, heat insulation performance can be improved, and foaming failure and appearance change of a refrigerator with the foaming failure can be reduced without inhabiting fluidization of a foam heat insulation material injected into the wall of the refrigerator and subjected to foam formation.

Description

  The present invention relates to a refrigerator using a vacuum heat insulating material and a vacuum heat insulating material.

  In recent years, there has been an active movement to promote energy conservation as a countermeasure against global warming, which is a global environmental problem. With regard to equipment that uses heat and cold energy, a vacuum insulation material with excellent heat insulation performance from the viewpoint of effective use of heat. Is spreading.

  Vacuum insulation is a bag-like gas barrier film that contains a core material with a high gas phase volume ratio and a fine gap, such as glass wool, and the core material storage space is decompressed and sealed. It is a thing.

  Vacuum insulation materials have lower thermal conductivity than other insulation materials such as urethane foam and glass wool, and are especially applied to the walls of refrigerators that require high thermal insulation. In order to increase the effect, the thickness tends to increase.

  In addition, in order to efficiently dissipate the heat generated in the refrigerator's refrigeration cycle, a heat-dissipating pipe is attached to the inside of the outer box that forms the outer surface of the refrigerator, and this heat-dissipating pipe is covered with a vacuum heat insulating material, and the refrigerator is made of foamed urethane or the like. The space created between the inner box and the inner box is filled, making it difficult to transfer heat from the outside of the refrigerator to the inner side.

  However, simply placing a flat vacuum heat insulating material on the heat radiating pipe creates a space surrounded by the outer box of the refrigerator, the heat radiating pipe, and the vacuum heat insulating material. By stacking the pipe and the vacuum heat insulating material, the space between the inner box and the outer box of the refrigerator, that is, for the refrigerator, the wall thickness must be increased and the internal volume must be reduced.

  Therefore, in order to solve the above problem, it has been proposed to provide a groove in the vacuum heat insulating material (for example, see Patent Document 1).

  FIG. 4 is a perspective view of a conventional vacuum heat insulating material disclosed in Patent Document 1. As shown in FIG.

  FIG. 5 is a diagram showing a vacuum heat insulating material when the conventional technology disclosed in Patent Document 1 is applied, and FIG. 6 is a side view of the vacuum heat insulating material when applying the conventional technology disclosed in Patent Document 1. FIG. 7 is a rear perspective view of the vacuum heat insulating material when the conventional technique disclosed in Patent Document 1 is applied.

  As shown in FIG. 4, the conventional vacuum heat insulating material 1 is provided with a longitudinal groove 2 in which a heat radiating pipe is fitted on one side, so that the vacuum heat insulating material 1 covers the heat radiating pipe and can be reduced in thickness so that the heat insulating performance can be reduced. In addition, the wall thickness of the refrigerator can be reduced.

JP 2008-64323 A

However, in the refrigerator in which the vacuum heat insulating material is provided inside the heat radiating pipe, the groove for arranging the heat radiating pipe provided in the vacuum heat insulating material is provided in a straight line along the vertical direction of the refrigerator. A convex portion 2 a was formed on the back surface of the groove 2.

  In order to cover all of the heat dissipating pipes provided with U-turns up and down, it is necessary to provide not only vertical grooves 2 in the vertical direction but also grooves in the left and right direction (horizontal grooves 3 in FIG. 5) to cover the U-turn part. When the groove disclosed in Patent Document 1 is applied, on the back surface of the groove processing, that is, on the surface of the vacuum heat insulating material after the refrigerator is attached, as shown in FIG. And a rectangular recess 4 surrounded by the protrusion 3a by the lateral groove 3 is formed, and the flow of urethane foam which gives heat insulation and the strength of the casing is inhibited by pouring into the refrigerator wall and foaming, resulting in poor foaming and accompanying it It had the subject that a refrigerator external appearance deformation | transformation will generate | occur | produce.

  The present invention solves the above-mentioned conventional problem, and without the heat radiating pipe projecting, the vacuum heat insulating material can be disposed inside the folded portion of the heat radiating pipe, and the flow of the foam heat insulating material. It aims at providing the vacuum heat insulating material which can reduce the foaming defect and the external appearance deformation | transformation of a refrigerator accompanying it, and a refrigerator using the same.

  In order to solve the above-mentioned conventional problems, the vacuum heat insulating material of the present invention has a groove formed in the longitudinal direction on one side of a plate-like member whose core is covered with a gas barrier film and whose inside is decompressed and sealed. One groove portion and a second groove portion having a groove formed in a short direction are formed, and the first groove portion and the second groove portion cross each other at least on a plate-shaped surface, and the upper, lower, left, and right sides of the member The back surfaces of the first groove portion and the second groove portion are substantially flat.

  The refrigerator according to the present invention includes the vacuum heat insulating material according to any one of the first to third aspects, a heat insulating box filled with a foam heat insulating material between the outer box and the inner box, In the refrigerator comprising a heat dissipating pipe disposed inside the outer box, the vacuum heat insulating material is disposed inside the heat dissipating pipe, and the heat dissipating pipe is disposed in the first groove and the second groove. Is provided.

Thereby, without projecting the heat radiating pipe, the vacuum heat insulating material can be disposed also inside the folded portion of the heat radiating pipe, and in the refrigerator having the heat radiating pipe meandering up and down inside the outer box A vacuum heat insulating material can be disposed inside the folded portion of the heat radiating pipe without protruding the heat radiating pipe.
Furthermore, the unevenness | corrugation which inhibits the flow of a foam heat insulating material can be eliminated.

  The vacuum heat insulating material and the refrigerator using the same according to the present invention can improve further heat insulating performance, and do not hinder the flow of the foam heat insulating material, and can reduce foaming failure and the accompanying external deformation of the refrigerator.

The figure which piled up the heat radiating pipe on the vacuum heat insulating material in Embodiment 1 of this invention Side view of the vacuum heat insulating material in Embodiment 1 of this invention The rear perspective view of the vacuum heat insulating material in Embodiment 1 of this invention The perspective view which shows the conventional vacuum heat insulating material disclosed by patent document 1 The figure which shows the vacuum heat insulating material at the time of applying the prior art disclosed by patent document 1 Side view of the vacuum heat insulating material when the prior art disclosed in Patent Document 1 is applied Rear perspective view of a vacuum heat insulating material when the conventional technique disclosed in Patent Document 1 is applied

  1st invention covers the core material with the gas barrier film, the 1st groove part which has the groove | channel formed in the longitudinal direction on the single side | surface of the plate-shaped member (vacuum heat insulating material) which decompressed and sealed the inside, and a transversal direction A first groove portion and a second groove portion that cross each other at least on a plate-like surface, and upper, lower, left and right ends of the member (vacuum heat insulating material). The back surfaces of the first groove portion and the second groove portion are substantially flat.

  Thereby, in the refrigerator in which the vacuum heat insulating material is provided on the inner side of the heat radiating pipe, the heat radiating pipe can be disposed on the inner side of the folded portion without protruding the heat radiating pipe, thereby further improving the heat insulating performance. In addition, the back surfaces of the first groove portion and the second groove portion are substantially flat and do not hinder the flow of the foam insulation material that is injected into the refrigerator wall and foamed, thereby reducing foaming failure and accompanying refrigerator external deformation. .

  According to a second invention, in the first invention, the fin portion of the vacuum heat insulating material is folded back to a surface on which the first groove portion and the second groove portion are provided, whereby the first groove portion and the second groove portion. Since the back surface of a certain surface is only a flat plate, the flow of the foam heat insulating material is not hindered, and foaming failure and the accompanying external appearance deformation of the refrigerator can be further reduced.

  According to a third invention, in the second invention, in the first groove portion and the second groove portion, the fin portion is brought into contact with the bottom surface of the first groove portion and the second groove portion at one or more places. The air accumulated in the groove space can be easily discharged, and adverse effects caused by the air accumulated in the groove space, for example, external deformation of the refrigerator can be further reduced.

According to a fourth aspect of the present invention, there is provided the vacuum heat insulating material according to any one of the first to third aspects, a heat insulating box filled with a foam heat insulating material between the outer box and the inner box, and the outer box. In the refrigerator comprising a heat dissipating pipe disposed inside, the vacuum heat insulating material is disposed inside the heat dissipating pipe, and the heat dissipating pipe is disposed in the first groove portion and the second groove portion. As a result, the vacuum heat insulating material can be applied with a high coverage, and further heat insulating performance can be improved.
Furthermore, it is possible to reduce foaming failure and accompanying refrigerator appearance deformation without impeding the flow of the foam heat insulating material that is injected into the refrigerator wall and foamed.

  Embodiments of a vacuum heat insulating material according to the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a diagram in which a heat radiating pipe is overlaid on a vacuum heat insulating material according to Embodiment 1 of the present invention. FIG. 2 is a side view of the vacuum heat insulating material in Embodiment 1 of the present invention, and FIG. 3 is a rear perspective view of the vacuum heat insulating material in Embodiment 1 of the present invention.

  As shown in FIG. 1, the vacuum heat insulating material 11 is a plate-like member that includes a core material 12 and a gas barrier film coating material 13 that covers the core material 12, and the inside of the coating material 13 is sealed under reduced pressure. The first groove 15 and the second groove 16 for installing the heat radiating pipe 14 are provided on one side thereof.

  In addition, around the vacuum heat insulating material 11, the fin part (fin part) 21 of the gas-barrier film which pressure-reduced and heat-welded and remained exists in the circumference | surroundings.

The 1st groove part 15 is a ditch | groove formed in the longitudinal direction (namely, the up-down direction of a refrigerator) of the vacuum heat insulating material 11 to the upper-lower-end surface part of the vacuum heat insulating material 11, and several 1st groove parts 15 are mutually parallel. It is arranged.
The second groove portions 16 are concave grooves extending along the short direction of the vacuum heat insulating material 11 (that is, the front-rear direction of the refrigerator), and are arranged one by one in the vertical direction of the vacuum heat insulating material 11. 15 and the second groove 16 are formed so as to cross each other.

Moreover, the 1st groove part 15 and the 2nd groove part 16 are formed to the edge part of the up-down-left-right of the member.
Here, specifically, the end portions refer to the left and right end portions 22 and the upper and lower end portions 23.

  In the upper and lower second groove portions 16, bent portions that are bent at the upper and lower ends of the heat radiating pipe 14, that is, U-turn portions are arranged.

  Thereby, almost the whole heat radiating pipe 14 meandering up and down is covered with the vacuum heat insulating material 11.

  Here, in this Embodiment, the edge part of the vacuum heat insulating material 11 is a part except the heat welding part and the fin part 21, Comprising: It defines as the edge part of the part in which the core material 12 exists.

  Moreover, as shown in FIG.2 and FIG.3, the back surface of the 1st groove part 15 and the 2nd groove part 16 is a substantially flat plate without a protrusion.

  Specifically, the back surfaces of the first groove portion 15 and the second groove portion 16 become substantially flat plates without protrusions by placing the opposite surfaces of the first groove portion 15 and the second groove portion 16 on a flat plate and performing pressing. .

  In the present embodiment, the back surfaces of the first groove portion 15 and the second groove portion 16 are gently curved rather than a sudden step with a substantially flat plate having no protrusion, and the height of the curve means 2 mm or less. To do.

  As described above, in the present embodiment, the core material 12 is covered with the outer cover material 13 of the gas barrier film, and the inside of the plate-like member is decompressed and sealed, and has a groove formed in the longitudinal direction on one side. One groove portion 15 and a second groove portion 16 having a groove formed in the short direction are formed up to the end surface portion of the member, and the first groove portion 15 and the second groove portion 16 are formed so as to cross each other, The back surfaces of the one groove portion 15 and the second groove portion 16 are formed in a substantially flat surface.

  Thereby, without making the heat radiating pipe 14 protrude, the vacuum heat insulating material can be disposed also inside the folded portion of the heat radiating pipe 14, and further heat insulating performance can be improved. The back surface of the second groove portion 16 has no protrusion, and the back surface of the vacuum heat insulating material 11 is substantially flat, does not hinder the flow of the foam heat insulating material that is injected into the refrigerator wall and foamed, and has poor foaming and the appearance of the refrigerator accompanying it. Deformation can be reduced.

  Further, as shown in the second groove portion 16 below in FIG. 2, the fin portion 21 is folded back to the surface on which the first groove portion 15 and the second groove portion 16 are provided, so that the surface on which the first groove portion 15 and the second groove portion 16 are provided. The back surface is only a flat plate, and the flow of the foam heat insulating material is not hindered, and the foaming failure and the accompanying external appearance deformation of the refrigerator can be further reduced.

  Further, as shown in the second groove portion 16 below in FIG. 2, in the first groove portion 15 and the second groove portion 16, the fin portion 21 is brought into contact with the bottom surfaces of the first groove portion 15 and the second groove portion 16 at one or more places. As a result, the air accumulated in the groove space can be easily discharged, and adverse effects caused by the air accumulated in the groove space, for example, external deformation of the refrigerator can be further reduced.

  In the present embodiment, the fin portion 21 is folded back to the surface with the second groove portion 16 only for the lower second groove portion 16, but the fin portion 21 is It may be folded back on the surface with the two groove portions 16.

  In the present invention, the back surfaces of the first groove portion and the second groove portion are substantially flat, thereby eliminating the unevenness that hindered the flow of the foamed heat insulating material, and hindering the flow of the foamed heat insulating material such as urethane. Since the cause is eliminated and foaming failure and appearance deformation associated therewith can be reduced, it can be applied to all refrigeration equipment having a heat radiating pipe on the wall surface of the main body, such as vending machines and commercial refrigerators.

11 Vacuum insulation (members)
12 core material 13 jacket material 14 heat radiating pipe 15 first groove portion 16 second groove portion 21 fin portion (fin portion)
22 end 23 end

Claims (4)

A first groove part having a groove formed in the longitudinal direction on one side of a plate-like member whose core material is covered with a gas barrier film and whose inside is decompressed and sealed, and a second groove part having a groove formed in the short direction The first groove portion and the second groove portion intersect each other at least on the plate-like surface, and are formed up to the top, bottom, left and right ends of the member, and the back surfaces of the first groove portion and the second groove portion Is a vacuum insulation material formed almost flat. The vacuum heat insulating material according to claim 1, wherein the fin portion of the vacuum heat insulating material is folded back to a surface having the first groove portion and the second groove portion. The vacuum heat insulating material according to claim 2, wherein, in the first groove portion and the second groove portion, the fin portions are brought into contact with the bottom surfaces of the first groove portion and the second groove portion at one or more places. The said vacuum heat insulating material as described in any one of Claim 1 to 3, the heat insulation box body which filled the foam heat insulating material between the outer box and the inner box, and the thermal radiation arrange | positioned inside the said outer box In a refrigerator equipped with a pipe,
The said vacuum heat insulating material is arrange | positioned inside the warehouse of the said heat radiating pipe, The refrigerator which arrange | positioned the said heat radiating pipe in said 1st groove part and said 2nd groove part.