Heat-insulating wall, and heat-insulating housing and method for producing the same

Patent metadata

Field	Value
Publication number	US-10781963-B2
Application number	US-201916573752-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Jun 20, 2012
Publication date	Sep 22, 2020
Grant date	Sep 22, 2020

Abstract

A heat-insulating housing (21) includes: a wall body; and an open-cell resin body (4) of thermosetting resin with which a heat-insulating space formed by the wall body is filled by integral foaming, the open-cell resin body including: a plurality of cells (47); a cell film portion (42); a cell skeleton portion (43); a first through-hole (44) formed so as to extend through the cell film portion; and a second through-hole (45) formed so as to extend through the cell skeleton portion, wherein the plurality of cells communicate with one another through the first through-hole and the second through-hole.

First claim

The invention claimed is:

1. A vacuum heat-insulating material comprising:
an open-cell resin body filled in a heat-insulating space of the vacuum heat-insulating material and formed of a thermosetting resin; and
powder dispersed in the open-cell resin body and incompatible with the open-cell resin body, wherein:
the open-cell resin body includes a plurality of cells;
at least some of the plurality of cells communicate with each other through a first through-hole formed by distortion at a molecular level generated when the open-cell resin body foams; and
at least some of the plurality of cells communicate with each other through a second through-hole formed by the powder.

2. The vacuum heat-insulating material according to claim 1 , wherein the open-cell resin body is an open-cell urethane foam.

3. The vacuum heat-insulating material according to claim 2 , wherein a SP value of the powder is 9.5 or less.

4. The vacuum heat-insulating material according to claim 1 , wherein the open-cell resin body is an open-cell phenol foam.

5. The vacuum heat-insulating material according to claim 1 , wherein the powder is polyethylene or nylon.

6. The vacuum heat-insulating material according to claim 1 , wherein the size of the powder is smaller than the size of the cell.

7. The vacuum heat-insulating material according to claim 1 , wherein a gas adsorbing device configured to adsorb at least water vapor and air is provided in the heat-insulating space of the vacuum heat-insulating material.

8. The vacuum heat-insulating material according to claim 7 , wherein the gas adsorbing device further adsorbs a carbon dioxide gas.

9. A heat-insulating box comprising a vacuum heat-insulating material,
the vacuum heat-insulating material including:
an open-cell resin body filled in a heat-insulating space of the vacuum heat-insulating material and formed of a thermosetting resin; and
powder dispersed in the open-cell resin body and incompatible with the open-cell resin body, wherein:
the open-cell resin body includes a plurality of cells;
at least some of the plurality of cells communicate with each other through a first through-hole formed by distortion at a molecular level generated when the open-cell resin body foams; and
at least some of the plurality of cells communicate with each other through a second through-hole formed by the powder.

10. The heat-insulating box according to claim 9 , wherein the open-cell resin body is an open-cell urethane foam.

11. The heat-insulating box according to claim 10 , wherein a SP value of the powder is 9.5 or less.

12. The heat-insulating box according to claim 9 , wherein the open-cell resin body is an open-cell phenol foam.

13. The heat-insulating box according to claim 9 , wherein the powder is polyethylene or nylon.

14. The heat-insulating box according to claim 9 , wherein the size of the powder is smaller than the size of the cell.

15. The heat-insulating box according to claim 9 , wherein a gas adsorbing device configured to adsorb at least water vapor and air is provided in the heat-insulating space of the vacuum heat-insulating material.

16. The heat-insulating box according to claim 15 , wherein the gas adsorbing device further adsorbs a carbon dioxide gas.

17. The heat-insulating box according to claim 9 , wherein the heat-insulating box is used in any one of a refrigerator, a pot, a cooling box, a thermostatic bath, a hot water storage tank, and a cooler box.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Uekado Kazutaka
• Hirai Tsuyoki

Classifications

• C08J9/0061 Primary

  characterized by the use of several polymeric components · CPC title

• F25D2201/14

  using subatmospheric pressure · CPC title

• F25D23/065

  Details · CPC title

• B29C44/1209

  by impregnating a preformed part, e.g. a porous lining · CPC title

• B29C67/20

  for porous or cellular articles, e.g. of foam plastics, coarse-pored {(chemical aspects of working up macro-molecular substances to porous or cellular articles C08J9/00)} · CPC title