Latent heat storage gypsum board and partition structure

Patent metadata

Field	Value
Publication number	US-12492330-B2
Application number	US-202218560518-A
Country	US
Kind code	B2
Filing date	Apr 28, 2022
Priority date	Jun 7, 2021
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

A latent heat storage gypsum plate includes: a gypsum plate having a first main face and a second main face located on an opposite side of the gypsum plate from the first main face; and a latent heat storage layer disposed over at least part of the first main face of the gypsum plate and including a latent heat storage material and a binder. A heat storage capacity of the latent heat storage gypsum plate is 260 KJ/m 2 or more, the heat storage capacity being measured in a measurement temperature range of from 15° C. through 35° C. through heat storage capacity measurement specified in ASTM C 1784. The latent heat storage gypsum plate exhibits heat generation property grade 1 as evaluated by a heat generation property test specified in JIS A 6901 (2014), with the face in which the latent heat storage layer is disposed being set as a back face.

First claim

The invention claimed is:

1 . A latent heat storage gypsum plate, comprising:
a gypsum plate having a first main face and a second main face that is located on an opposite side of the gypsum plate from the first main face; and a latent heat storage layer disposed over at least part of the first main face of the gypsum plate, the latent heat storage layer including a latent heat storage material and a binder, wherein a heat storage capacity of the latent heat storage gypsum plate is 260 KJ/m 2 or more, the heat storage capacity being measured in a measurement temperature range of 15° C. or higher and 35° C. or lower through heat storage capacity measurement specified in ASTM C 1784, and the latent heat storage gypsum plate exhibits heat generation property grade 1 as evaluated by a heat generation property test specified in JIS A 6901 (2014), with the first main face being set as a back face, and wherein the latent heat storage gypsum plate satisfies a relation of formula (1) below:
Z≤ 126.48 X+ 928.61 Y− 1732.0  (1)

where X is a thickness (mm) of the gypsum plate, Y is a specific gravity of the gypsum plate, and Z is the heat storage capacity (kJ/m 2 ).

2 . The latent heat storage gypsum plate according to claim 1 , wherein the gypsum plate has a thickness of 9.0 mm or larger and a specific gravity of 0.35 or higher.

3 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 2 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

4 . The latent heat storage gypsum plate according to claim 1 , wherein the latent heat storage layer includes the latent heat storage material at a concentration of 10 parts by mass or more and 69 parts by mass or less, with the latent heat storage layer being 100 parts by mass.

5 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 4 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

6 . The latent heat storage gypsum plate according to claim 1 , wherein the binder is one or more selected from the group consisting of inorganic binders and organic binders.

7 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 6 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

8 . The latent heat storage gypsum plate according to claim 1 , wherein the binder includes one or more compounds selected from the group consisting of alkali metal silicate-based binders and vinyl acetate-based binders.

9 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 8 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

10 . The latent heat storage gypsum plate according to claim 1 , wherein the latent heat storage layer includes inorganic powder.

11 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 10 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

12 . A partition structure that partitions an indoor space, the partition structure comprising:
the latent heat storage gypsum plate of claim 1 ; and a base material that supports the latent heat storage gypsum plate, wherein the second main face of the gypsum plate included in the latent heat storage gypsum plate is located to face the indoor space.

Assignees

• Yoshino Gypsum Co

Inventors

• Niimi Katsumi
• Sato Yosuke
• Naito Daisuke

Classifications

• C04B41/68

  Silicic acid; Silicates · CPC title

• E04C2/526

  with adaptations not otherwise provided for, for connecting, transport; for making impervious or hermetic, e.g. sealings · CPC title

• E04C2/043

  of plaster (E04C2/049 takes precedence) · CPC title

• F28D20/0056

  using solid heat storage material (F28D20/0052 takes precedence) · CPC title

• C04B2111/00629

  the covering sheets being made of material other than paper · CPC title