Browse Prior Art Database

Over Blow Mold of Humidifier Core

IP.com Disclosure Number: IPCOM000249909D
Publication Date: 2017-Apr-28
Document File: 22 page(s) / 5M

Publishing Venue

The IP.com Prior Art Database

Abstract

A humidifier comprises hollow shell and humidifier core. The humidifier core includes a transfer sheet, a plurality of first channels, and a plurality of second channels. The transfer sheet comprises a permeable material having a plurality of sections and a plurality of layers of spacing materials. The plurality of first channels are configured to allow air flow in a first direction and to prevent airflow in a second direction that is different from the first direction. The plurality of second channels are configured to allow air flow in the second direction and to prevent airflow in the first direction. The humidifier comprises a stack of alternating first channels and second channels, and the first channels are configured to transfer liquid from air flowing in at least one of the first channels to air flowing in at least one of the second channels. A first channel is formed by folding a first section of the transfer sheet under a second section of the transfer sheet with a layer of spacing material provided therein. A second channel is formed by folding a third section of the transfer sheet over the second section of the transfer sheet with a layer of spacing material provided therein. The humidifier is suitable for use in fuel cell stack. The hollow shell is formed by forcing air through a suspended material with the humidifier core located therein.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 14% of the total text.

4570US

1

Over Blow Mold of Humidifier Core

Technical field

[0001] The invention relates to a humidifier, for example for a fuel cell.

Background

[0002] In DE 10 2009 034 095 A1, EP 1 261 992 B1, and U.S. Patent Application

Serial No. 14/663,504, which is incorporated by reference, humidifiers for fuel cells are

described which have a plurality of superimposed membranes which separate flow

channels for the feed-through of moist and dry air. Water molecules penetrate the

membranes from the moist to the dry air stream which is thus enriched with moisture.

The exhaust gas of the fuel cell can be used as moist incoming air stream; the moisture

of which exhaust gas is transferred through the membrane into a fresh-air stream which

is then fed to the inlet of the fuel cell system in order to generate current in an

electrochemical reaction. This is shown in Figure 1.

Summary

[0003] It is desirable to provide a humidifier having an economical design with

which moisture is transferable in an efficient manner from a moist to a dry gas stream,

wherein the gas streams are separated from one another.

[0004] Furthermore, it is desirable to provide a humidifier having that efficiently

transfers moister to the dry gas stream while limiting the transfer of gas to the dry gas

steam.

[0005] In one embodiment, a humidifier comprises a transfer sheet, a plurality of

first channels, and a plurality of second channels. The transfer sheet comprises a

permeable material having a plurality of sections and a plurality of layers of spacing

materials. The plurality of first channels are configured to allow air flow in a first

direction and to prevent airflow in a second direction that is different from the first

direction. The plurality of second channels are configured to allow air flow in the second

direction and to prevent airflow in the first direction. The humidifier comprises a stack of

alternating first channels and second channels, and the first channels are configured to

4570US

2

transfer liquid from air flowing in at least one of the first channels to air flowing in at least

one of the second channels. A first channel is formed by folding a first section of the

transfer sheet under a second section of the transfer sheet with a layer of spacing

material provided therein. A second channel is formed by folding a third section of the

transfer sheet over the second section of the transfer sheet with a layer of spacing

material provided therein.

[0006] In one embodiment, a method of manufacturing a humidifier element

comprises providing a transfer sheet comprising a permeable material having a plurality

of sections. A first section of the transfer sheet is folded under a second section of the

transfer sheet. A layer of spacing material is provided between the first section of the

transfer sheet and the second section of the transfer sheet. An edge of the first section

of transfer sheet is sealed to an edge of the second section of the transfer sheet to form

a first cha...