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Heat insulating box, and refrigerator and hot-water storage device each comprising heat insulating box

A box, vacuum insulation technology, which is applied to household refrigeration devices, isolation of refrigeration devices, and protection of pipelines through thermal insulation, etc. The effect of sufficient thermal insulation

Inactive Publication Date: 2013-10-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the heat-insulating box described in Patent Document 1, in order to ensure the strength of the wall surface, it is necessary to ensure to some extent the amount of rigid polyurethane foam filled in the space between the outer box and the inner box, and there is a problem of realizing the wall thickness. The reduction of the still difficult problem
[0009] That is, there is a problem that it is difficult to further expand the internal volume of the heat insulating box while ensuring the heat insulating performance in the conventional heat insulating box.

Method used

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  • Heat insulating box, and refrigerator and hot-water storage device each comprising heat insulating box
  • Heat insulating box, and refrigerator and hot-water storage device each comprising heat insulating box
  • Heat insulating box, and refrigerator and hot-water storage device each comprising heat insulating box

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Experimental program
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Embodiment approach 1

[0036] figure 1 It is a front cross-sectional view of the heat insulating box according to Embodiment 1 of the present invention. figure 2 is the rear view of the heat insulation box. in addition, image 3 is a perspective view of the heat insulation box. In addition, the vacuum heat insulating material 6 is actually arrange|positioned in the space 4 (corresponding to the 1st space of this invention) formed between the outer case 2 and the inner case 3 as follows. But when figure 2 In the figure, in order to easily understand the shape of the vacuum heat insulating material 6 arranged on the back side of the heat insulating box 1, the vacuum heat insulating material 6 is shown through the back surface of the outer box 2 (that is, the vacuum is indicated by a solid line). Insulation 6). In addition, in image 3 In , illustration of the guide rail 16 is omitted.

[0037] Hereinafter, the heat insulation box 1 of this Embodiment 1 is demonstrated using these drawings.

...

Embodiment approach 2

[0063] In Embodiment 1, the vacuum heat insulating material 6 is arrange|positioned in the space 4 formed between the outer case 2 and the inner case 3 by affixing the vacuum heat insulating material 6 to the outer case 2. Not limited to this, the vacuum heat insulating material 6 may be arrange|positioned in the space 4, for example as follows. Note that items that are not particularly described in Embodiment 2 are the same as in Embodiment 1, and the same functions and configurations will be described using the same reference numerals.

[0064] Figure 7 It is a front cross-sectional view of a heat insulation box according to Embodiment 2 of the present invention.

[0065] Such as Figure 7 As shown, in the heat insulation box 1 of the second embodiment, the condensation pipe 9 is provided on the inner surface side of the outer box 2 . The condenser pipe 9 is a refrigerant pipe through which high-temperature and high-pressure refrigerant discharged from the compressor flo...

Embodiment approach 3

[0071] Depending on the shape of the inner box 3 and the like, the vacuum heat insulating material 6 may be arranged in the space 4 as follows, for example, without being limited to the structures shown in Embodiment 1 and Embodiment 2. Note that items not particularly described in Embodiment 3 are the same as those in Embodiment 1 or Embodiment 2, and the same functions and configurations will be described using the same reference numerals.

[0072] Figure 8 It is a front sectional view showing the heat insulation box of Embodiment 3 of this invention.

[0073] Such as Figure 8 As shown, the heat insulation box 1 of the present embodiment 3 does not form the guide rail 16 in the inner box 3 (refer to figure 1 , Figure 7 )Structure. In this way, when the inner box 3 has a shape in which the vacuum heat insulating material 6 is easily attached, all or a part of the vacuum heat insulating material 6 may be arranged in the inner box 3 .

[0074] As mentioned above, in the...

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Abstract

A heat insulating box (1) is provided with: an outer box (2); an inner box (3); and a vacuum heat insulating material (6) and hard urethane foam (5), which are filled into the space (4) formed between the outer box (2) and the inner box (3). The filling factor of the vacuum heat insulating material (6) in the space (4) is 40% to 80%, the ratio of the area of the vacuum heat insulating material (6) to the area of the surface of the outer box is 60% or more, and the bending elastic modulus of the hard urethane foam (5) is 15.0 MPa or higher.

Description

technical field [0001] The invention relates to a heat insulation box filled with rigid polyurethane foam and a vacuum heat insulation piece, a refrigerator and a hot water storage device with the heat insulation box. Background technique [0002] In recent years, various efforts have been made to conserve resources, save energy, and especially save electricity from the viewpoint of global environmental protection and the safety of nuclear power plants. [0003] From the point of view of energy saving and power saving, a technology has been proposed in which a vacuum heat insulating material is arranged in addition to rigid polyurethane foam in a heat insulating box whose outer contour is formed by an outer box and an inner box. For example, the "A heat-insulated box with a flexural modulus of more than 8.0MPa and a density of 60kg / m 3 The following, rigid polyurethane foam ensuring rigid strength and thermal insulation performance, and a vacuum heat insulation member whose...

Claims

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Application Information

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IPC IPC(8): F25D23/00F24H9/00
CPCF25D2201/14F24H9/00F25D23/08F25D23/062F25D23/06F16L59/065B29C44/18B29K2075/00B29K2995/0063B29K2995/0082B29L2031/7622F24H1/182
Inventor 难波章弘花冈祥川上俊史横山淳一儿岛喜彦中津哲史辻原雅法松井永今野博司
Owner MITSUBISHI ELECTRIC CORP
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