JP2012026588A - Hot water storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water storage tank in which the joining part of a vacuum heat insulation material and a polystyrene foam heat insulation material is prevented from floating and the heat retention performance is stabilized to prevent the hot air inside the vacuum heat insulation material from leaking out.SOLUTION: The hot water storage tank includes: a vacuum heat insulation material 3 having a core material 3a arranged between the front and the back surfaces of a film-like exterior material 3b, sealed by heat sealing with the inside thereof in a low vacuum state, and covering the tank 1, wherein the exterior material is bent to the tank 1 side; and a vacuum heat insulation material fixing tool 6 set between the vacuum heat insulation material 3 and the tank 1. The hot water storage tank is characterized in that an adhesive layer 6b is provided between the exterior material 3b of vacuum heat insulation material bent to the tank 1 side and the vacuum heat insulation material fixing tool 6.

Description

  The present invention relates to a hot water storage tank having a vacuum heat insulating material fixing part in a heat insulating material for reducing heat dissipation.

  Conventionally, there is a heat insulating material that covers two or more types of heat insulating material that covers this type of hot water storage tank, and the main part around the hot water tank and parts with complicated shapes are made of polystyrene foam heat insulating material. A portion that needs to be covered and thinned is covered with a flat vacuum heat insulating material that is rolled into a cylindrical shape along the shape of the hot water storage tank (see, for example, Patent Document 1).

  In this type of conventional hot water storage tank portion, a portion having a small gap with the casing around the hot water storage tank is covered with a vacuum heat insulating material, and the other portion is formed of a foamed heat insulating material.

  The vacuum heat insulating material is composed of a core material made of a material such as glass wool, and an exterior material made of a resin film obtained by laminating an aluminum foil that wraps the core material from both sides. Is provided. Moreover, the attachment of a vacuum heat insulating material and a polystyrene heat insulating material becomes a structure which affixes an adhesive tape on the outer edge part of the said vacuum heat insulating material, and the part which piled up the polystyrene heat insulating material, and fixes.

JP 2009-236476 A

  However, in the above-described conventional configuration, since the flat vacuum heat insulating material having a certain degree of rigidity is rolled, the force to return to the original flat plate shape due to the residual stress generated by the processing works, and the vacuum heat insulating material spreads outside, Since it is no longer along the cylindrical surface of the hot water storage tank, and the joint between the vacuum insulation and the polystyrene foam insulation is fixed via a soft exterior material on the outer edge of the vacuum insulation, it will return to the previous vacuum insulation. The joint part of the heat insulating material floats by the force to perform, and had the subject that the dispersion | variation tends to arise in the heat retention performance of a hot water storage tank.

  In addition, because the heat seal part of the outer edge of the vacuum insulation material is feared to be deteriorated by heat, the outer edge part of the exterior material was fixed outside the heat insulation material, but the aluminum foil constituting the exterior material Due to the heat conduction, the heat inside the heat insulating material is dissipated to the outside, and the heat retention performance is lowered.

  The present invention solves the above-mentioned conventional problems, and prevents the floating of the joint between the vacuum heat insulating material and the polystyrene foam heat insulating material, and realizes stabilization of the heat retaining performance so that the hot air inside the vacuum heat insulating material does not leak. The purpose is to provide a hot water storage tank.

  In order to solve the above-described conventional problems, the hot water storage tank of the present invention has a core material arranged between two film-like exterior materials consisting of two front and back surfaces, and the inside is sealed by heat sealing in a low vacuum state. A vacuum heat insulating material that is bent to the tank side, and a vacuum heat insulating material fixture that is disposed between the vacuum heat insulating material and the tank, and is bent to the tank side. An adhesive layer is provided between the outer packaging material and the vacuum heat insulating material fixture.

  This stabilizes the shape of the vacuum heat insulating material, folds the outer edge of the vacuum heat insulating material on the inside, and affixes the vacuum heat insulating material fixture so as to cover the outer edge of the outer heat insulating material. It has the effect of protecting against deterioration due to heat and preventing heat radiation from the outer edge of the exterior material.

  ADVANTAGE OF THE INVENTION According to this invention, the hot water storage tank which implement | achieved stabilization of the heat retention performance which prevents the float of the junction part of a vacuum heat insulating material and a polystyrene heat insulating material, and the hot air inside a vacuum heat insulating material does not leak can be provided.

Vacuum heat insulating material exploded view in Embodiment 1 of the present invention Sectional view of the joint of the vacuum insulation fixture Cross-sectional view of joint part of other vacuum insulation fixture Cross-sectional view of joint part of other vacuum insulation fixture

  1st invention arrange | positions a core material between the film-form exterior materials which consist of two sheets of front and back, seals the inside with a heat seal in a low vacuum state, covers a tank, and the said exterior material is the said tank side. A vacuum heat insulating material bent, and a vacuum heat insulating material fixture disposed between the vacuum heat insulating material and the tank, and a vacuum heat insulating material folded on the tank side and the vacuum heat insulating material fixing device, A hot water storage tank that features an adhesive layer in between, stabilizes the shape of the vacuum heat insulating material, and folds the outer edge of the vacuum heat insulating material inside so that the vacuum heat insulating material is fixed to cover the outer edge of the outer heat insulating material By sticking the tool, the exterior material heat seal portion is protected from heat deterioration and has an effect of preventing heat radiation from the outer edge of the exterior material.

  2nd invention is equipped with the polystyrene heat insulating material which covers the said tank, and made the adhesive layer between the said polystyrene heat insulating material and the said vacuum heat insulating material fixture, It is characterized by the above-mentioned. The heat insulation performance can be stabilized so that hot air inside the vacuum heat insulating material does not leak.

  The third invention is characterized in that an adhesive layer is provided between the tank and the vacuum heat insulating material fixture, and can be adhesively sealed to a polystyrene foam heat insulating material while adhering the tank and the vacuum heat insulating material. The heat retention of the hot water storage tank can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an exploded view showing the configuration and arrangement of a vacuum heat insulating material of a water heater in the first embodiment of the present invention.

  In FIG. 1, a polystyrene foam heat insulating material 4 is arranged on the front surface and the top surface of the hot water storage tank 1, and a cylindrical heat insulating material 3 is rolled on the cylindrical portion on the back surface of the hot water storage tank 1 and curved in a cylindrical shape along the tank. ing. The vacuum heat insulating material fixture 6 is attached in a shape in which the left and right ends are curved along a straight line in the vertical direction and the upper and lower ends are curved along the curved surface of the tank in the horizontal direction.

FIG. 2 is a cross-sectional view of the joint portion of the vacuum heat insulating material fixture. In FIG. 2, the vacuum heat insulating material 3 has a configuration in which a core material 3a is sandwiched between two gas barrier film-shaped exterior materials 3b, and the vacuum heat insulating material 3a is maintained so as to keep the core material 3a in a vacuum. It is heat sealed at the outer edge 3c of the material and sealed. The outer edge 3c of the vacuum heat insulating material has a width of about 20 to 50 mm. Further, the vacuum heat insulating material fixture 6 has a foamed resin core material 6a having elasticity and heat insulating properties having a rectangular cross section, and has a front surface adhesive layer 6b and a back surface adhesive layer 6c on its outer periphery.

  About the vacuum heat insulating material of the water heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the vacuum heat insulating material is manufactured and supplied in a flat plate shape. However, since the hot water storage tank of the water heater is cylindrical, the vacuum heat insulating material is rolled so as to follow the outer shape of the hot water storage tank. Under the present circumstances, the outer edge part of a vacuum heat insulating material exterior material is previously bent in the roll inner side direction. On the other hand, in the vacuum heat insulating material fixture of the present invention, the back surface adhesive layer is stuck and fixed to the tank along the edge of the polystyrene foam heat insulating material.

  Thereafter, the rolled vacuum heat insulating material is fitted along the edge of the expanded polystyrene heat insulating material, and is adhesively fixed to the surface adhesive layer of the vacuum heat insulating material fixing tool. The vacuum heat insulating material after roll processing tries to return to its original shape, but the vacuum heat insulating material is stuck to the vacuum heat insulating material fixing device arranged in the gap with the tank, so it is fixed without spreading, and the vacuum heat insulating material Thus, the cylindrical shape and the outer edge shape are stable, the adhesion of the joint between the vacuum heat insulating material and the polystyrene foam heat insulating material, and the gap between the vacuum heat insulating material and the hot water storage tank are prevented from varying, and as a result, variations in the heat insulation performance can be reduced.

  In addition, since the heat seal portion at the outer edge of the exterior material of the vacuum heat insulating material is folded inside the heat insulating material, heat radiation at the outer edge of the outer material is suppressed, and the heat retaining performance is improved. In addition, the heat seal part on the outer edge of the exterior material is covered and closely adhered to the vacuum heat insulating material fixture of the present invention having heat insulation properties, so it is protected from heat from the tank side and suppresses thermal deterioration of the seal part. Can do.

  As described above, in the present embodiment, the vacuum heat insulating material suppresses the deformation that tends to expand to the original flat plate shape by residual stress after roll processing, and stabilizes the shape of the vacuum heat insulating material by fixing the adhesive. The heat insulation performance can be stabilized, and the outer edge of the vacuum insulation material, which was a weak point on the heat dissipation surface, is folded inward and covered with a vacuum insulation fixture to protect it. The heat insulation performance can be improved while preventing the deterioration of the hermetic portion.

  In FIG. 3, the vacuum heat insulating material fixture 6 has a foam resin core 6a having a rectangular cross section, and has a surface adhesive layer 6b and an adjacent side adhesive layer 6d on its outer periphery.

  About the vacuum heat insulating material of the water heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In the vacuum heat insulating material fixture, the vacuum heat insulating material is adhesively fixed to the surface adhesive layer, and the side surface adhesive layer is adhesively fixed to the end surface of the foamed heat insulating material, so the vacuum heat insulating material is fixed without spreading. The cylindrical shape and outer edge shape of the vacuum insulation material are stable, and the adhesion between the vacuum insulation material and the polystyrene foam insulation material is prevented, and the gap between the vacuum insulation material and the hot water storage tank is prevented from varying, resulting in reduced variation in heat insulation performance. it can. In addition, the vacuum heat insulating material is connected to the polystyrene foam heat insulating material through the vacuum heat insulating material fixing tool and adopts a hermetic seal configuration, so that heat from the inside of the heat insulating material can be prevented from leaking outside, and the heat retention performance is improved. be able to.

  4, the vacuum heat insulating material fixture 6 has a foam resin core material 6a having a rectangular cross section, and has a front surface adhesive layer 6b, a back surface adhesive layer 6c, and an adjacent side surface adhesive layer 6d on its outer periphery. is doing.

  About the vacuum heat insulating material of the water heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Since the vacuum heat insulating material is adhered and fixed to the surface adhesive layer and the side surface adhesive layer is adhesively fixed to the end surface of the expanded polystyrene heat insulating material, the vacuum heat insulating material is fixed without spreading, and the vacuum heat insulating material cylindrical shape and The outer edge shape is stabilized, the adhesion of the joint between the vacuum heat insulating material and the expanded polystyrene heat insulating material, and the gap between the vacuum heat insulating material and the hot water storage tank are prevented from varying, and as a result, variations in the heat insulation performance can be reduced. In addition, the vacuum heat insulating material is connected to the polystyrene foam heat insulating material through the vacuum heat insulating material fixing tool and adopts a hermetic seal configuration, so that heat from the inside of the heat insulating material can be prevented from leaking outside, and the heat retention performance is improved. be able to.

  As described above, since the hot water storage tank according to the present invention can stabilize the shape of the vacuum heat insulating material, the hot water storage tank can also be applied to a heat insulating application for a tank of a device having a high-temperature part that requires heat insulating heat insulation of the vacuum heat insulating material.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 3 Vacuum insulation material 3a Core material of vacuum insulation material 3b Exterior material of vacuum insulation material 3c Outer edge of vacuum insulation material 4 Styrofoam insulation material 5 Adhesive tape 6 Vacuum insulation material fixture 6a Core material of vacuum insulation material 6b Vacuum adhesive fixture surface adhesive layer 6c Vacuum adhesive fastener back surface adhesive layer 6d Vacuum adhesive fixture side adhesive layer

Claims (3)

A vacuum insulating material in which a core material is disposed between two front and back film-like exterior materials, the inside is sealed with a heat seal in a low vacuum state, the tank is covered, and the exterior material is folded to the tank side; A vacuum heat insulating material fixture disposed between the vacuum heat insulating material and the tank, and an adhesive layer between the vacuum heat insulating material folded to the tank side and the vacuum heat insulating material fixing device. A hot water storage tank characterized by 2. The hot water storage tank according to claim 1, comprising a foamed polystyrene heat insulating material covering the tank, wherein an adhesive layer is provided between the foamed polystyrene heat insulating material and the vacuum heat insulating material fixture. The hot water storage tank according to claim 1 or 2, wherein an adhesive layer is provided between the tank and the vacuum heat insulating material fixture.