Total heat exchange element and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9664457-B2
Application number	US-201114347469-A
Country	US
Kind code	B2
Filing date	Oct 26, 2011
Priority date	Oct 26, 2011
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

The present invention is a total heat exchange element in which a spacing member is provided on both sides of a sheet-like partition member to form a flow path and which performs heat exchange between an airflow that flows in a flow path formed on one side of the partition member and an airflow that flows in a flow path formed on another side of the partition member via the partition member, wherein the spacing member is molded integrally with the partition member by using a resin, and the partition member is configured to include a functional layer that has heat conductivity, moisture permeability, and gas shielding property and a heat shrink layer that shrinks at a predetermined temperature or higher.

First claim

The invention claimed is:

1. A total heat exchange element in which a spacing member is provided on opposite sides of a sheet-like partition member to form a flow path and which performs heat exchange between an airflow that flows in a flow path formed on one side of the partition member and an airflow that flows in a flow path formed on another side of the partition member via the partition member, wherein
the spacing member is molded integrally with the partition member by using a resin,
the partition member is configured to include a functional layer that has heat conductivity, moisture permeability, and gas shielding property and a heat shrink layer that shrinks at a predetermined temperature or higher, and
the heat shrink layer comprises a non-woven fabric, and a heat shrinkage rate of the non-woven fabric is larger than a heat shrinkage rate of the resin that is used as the spacing member.

2. The total heat exchange element according to claim 1 , wherein a heat-shrinkage start temperature of the partition member is higher than a mold temperature at a time of molding the spacing member and lower than a softening temperature of a resin that is used as the spacing member.

3. The total heat exchange element according to claim 1 , wherein the non-woven fabric includes a latent crimp fiber.

4. A manufacturing method of a total heat exchange element in which a spacing member is provided on opposite sides of a sheet-like partition member to form a flow path and which performs heat exchange between an airflow that flows in a flow path formed on one side of the partition member and an airflow that flows in a flow path formed on another side of the partition member via the partition member, the manufacturing method comprising:
a step of producing the partition member by stacking a functional layer that has heat conductivity, moisture permeability, and gas shielding property and a heat shrink layer that shrinks at a predetermined temperature or higher;
a step of producing a unit constituent member by molding the spacing member integrally with the partition member by using a resin;
a step of heating the heat shrink layer of the unit constituent member to the predetermined temperature or higher; and
a step of stacking the unit constituent members after the step of heating to the predetermined temperature or higher.

5. The manufacturing method of a total heat exchange element according to claim 4 , wherein the step of heating the heat shrink layer to the predetermined temperature or higher is performed by using a heating member that comes into contact with the heat shrink layer, without contacting the spacing member, of the unit constituent member.

6. The manufacturing method of a total heat exchange element according to claim 4 , wherein in the step of heating, the heat shrink layer is heated without heating the spacing member.

7. A manufacturing method of a total heat exchange element in which a spacing member is provided on opposite sides of a sheet-like partition member to form a flow path and which performs heat exchange between an airflow that flows in a flow path formed on one side of the partition member and an airflow that flows in a flow path formed on another side of the partition member via the partition member, the manufacturing method comprising:
a step of producing the partition member by stacking a functional layer that has heat conductivity, moisture permeability, and gas shielding property and a heat shrink layer that shrinks at a predetermined temperature or higher;
a step of stacking unit constituent members comprising the spacing member and the partition member; and
a step of causing air having the predetermined temperature or higher to flow in the flow path after the step of stacking the unit constituent members.

8. The manufacturing method of a total heat exchange element according to claim 7 , wherein a heat deformation temperature of the spacing member is higher than a heat-shrinkage start temperature of the heat shrink layer, which shrinks at a predetermined temperature or higher of the partition member.

Assignees

• Takada Masaru
• Tokizaki Shinya
• Sotokawa Hajime
• Ishimaru Yuichi
• Imai Takanori
• Arai Hidemoto
• Mitsubishi Electric Corp

Inventors

• Takada Masaru
• Tokizaki Shinya
• Sotokawa Hajime
• Ishimaru Yuichi
• Imai Takanori
• Arai Hidemoto

Classifications

• F28F21/06 Primary

  of plastics material · CPC title

• F24F13/02

  Ducting arrangements · CPC title

• F28D21/0015

  Heat and mass exchangers, e.g. with permeable walls · CPC title

• F28F3/08 Primary

  Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning · CPC title

• F28D9/0037

  the conduits for the other heat-exchange medium also being formed by paired plates touching each other (F28D9/0043 takes precedence) · CPC title