Partition member for total heat exchange element, total heat exchange element using this member, and total heat exchange type ventilation device

Patent metadata

Field	Value
Publication number	US-9879869-B2
Application number	US-201414897477-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Jun 20, 2013
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A partition member for total heat exchange element ( 14 ) includes an ultrafine fiber portion ( 17 ) on a porous sheet ( 18 ). The ultrafine fiber portion ( 17 ) is impregnated with or coated with a moisture permeable substance ( 21 ), and water-insolubilized.

First claim

The invention claimed is:

1. A partition member for total heat exchange element, the member comprising:
a porous sheet; and
an ultrafine fiber portion provided on the porous sheet, the ultrafine fiber portion comprising ultrafine fibers having a fiber diameter of 0.1 μm or more and 3 μm or less,
wherein the ultrafine fiber portion is impregnated with or coated with a water insoluble moisture permeable substance, and
wherein the ultrafine fiber portion includes ultrafine fibers which retain a moisture permeable substance by capillary force.

2. The partition member for total heat exchange element according to claim 1 , wherein
the porous sheet has an average pore diameter of 15 μm or more and 100 μm or less and a thickness of 20 μm or more and 500 μm or less, and
the ultrafine fiber portion has an average pore diameter of 0.01 μm or more and 10 μm or less and a thickness of 0.5 μm or more and 20 μm or less.

3. The partition member for total heat exchange element according to claim 1 , wherein the water insoluble moisture permeable substance comprises a macromolecule of a low-molecular-weight hydrophilic organic compound, the macromolecule being impregnated or coated on the ultrafine fibers, and the macromolecule being produced by polymerization of the low-molecular-weight hydrophilic organic compound.

4. The partition member for total heat exchange element according to claim 1 , wherein
the porous sheet contains a heat-fusing component, and
the porous sheet and the ultrafine fiber portion are thermally bonded to each other by the heat-fusing component.

5. The partition member for total heat exchange element according to claim 1 , wherein the water insoluble moisture permeable substance includes a quaternary ammonium group.

6. The partition member for total heat exchange element according to claim 4 , wherein the heat-fusing component is a polymer having a hydrophilic group.

7. The partition member for total heat exchange element according to claim 1 , wherein the porous sheet is structured of a sheath-core composite including a low-melting point component capable of thermally fusing in its outer layer and a high-melting point component in its inner layer.

8. A total heat exchange element using the partition member for total heat exchange element according to claim 1 .

9. A total heat exchange type ventilation device using the total heat exchange element according to claim 8 .

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamada Yousuke
• Ootomo Miyuki
• Takahashi Keita

Classifications

• F28F13/18

  by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing · CPC title

• F24F3/04

  operating with high pressure or high velocity · 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

• F28D21/0015

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

• F28F3/048

  in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels · CPC title