# US 2025/0083108 A1 · Humidifier and manufacturing process of humidifier

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- Number: US 2025/0083108 A1
- Document ID: US20250083108A1
- Status: Published application
- Kind: A1
- Application number: 18/789,638
- Filed: 2024-07-30
- Published: 2025-03-13
- Earliest claimed: 2023-09-12
- Assignees: Mann+Hummel GmbH
- Applicants: MANN+HUMMEL GmbH
- Inventors: Matthias TESCHNER; Oliver VOCA; Benedikt WELLER; Pius TRAUTMANN; Mathias ASSMANN
- Web page: https://patentgrep.com/patent/US20250083108A1

## CPC

- B01D 63/1031: {Glue line or sealing patterns}
- B01D 63/10: Spiral-wound membrane modules
- F24F 6/00: Air-humidification {, e.g. cooling by humidification}
- H01M 8/04149: {by diffusion, e.g. making use of membranes}
- B01D 2313/08: Flow guidance means within the module or the apparatus
- B01D 2313/54: Modularity of membrane module elements
- B01D 2315/08: Fully permeating type; Dead-end filtration
- B01D 2315/22: Membrane contactor
- B01D 2315/24: Counter-current operation
- Y02E 60/50: Fuel cells
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A humidifier comprising a wound portion wrapped around a central axis and comprising enclosures, a first one the enclosures comprising a first pair of semipermeable membranes separated by a first spacer layer to form one among wet-gas channels, and a second one of the enclosures comprising a second pair of semipermeable membranes separated by a second spacer layer to form one among dry-gas channels. The dry-gas channels are configured to receive a dry gas through at least part of a first frontal area of the wound portion and in an axial direction along the dry-gas channels. The wet-gas channels are configured to receive a wet gas through at least part of a second frontal area of the wound portion and in the axial direction along the wet-gas channels, the second frontal area being opposite to the first frontal area.

## Claims

### Claim 1

A humidifier comprising:
a wound portion wrapped around a central axis and comprising enclosures, a first one the enclosures comprising a first pair of semipermeable membranes separated by a first spacer layer to form one among wet-gas channels, and a second one of the enclosures comprising a second pair of semipermeable membranes separated by a second spacer layer to form one among dry-gas channels,
wherein the dry-gas channels are configured to receive a dry gas through at least part of a first frontal area of the wound portion and in an axial direction along the dry-gas channels,
wherein the wet-gas channels are configured to receive a wet gas through at least part of a second frontal area of the wound portion and in the axial direction along the wet-gas channels, the second frontal area being opposite to the first frontal area,
wherein each of the first frontal area and the second frontal area are subdivided into segments of the same size, and
wherein the dry-gas channels or the wet-gas channels are configured as blind channels within one among the segments; and
a sealing material configured to close the blind channels on the first frontal area and the second frontal area, the sealing material comprising a track separating the segments on the first frontal area and the second frontal area.

### Claim 2 (depends on 1)

The humidifier according to claim 1, wherein the wet-gas channels and the dry-gas channels are configured for a counterflow of the wet gas and the dry gas through the wound portion.

### Claim 3 (depends on 1)

The humidifier according to claim 1, wherein the wet-gas channels and the dry-gas channels are configured for a coflow of the wet gas and the dry gas through the wound portion.

### Claim 4 (depends on 1)

The humidifier according to claim 1, wherein the wet-gas channels and the dry-gas channels are configured for a counterflow and a coflow of the wet gas and the dry gas through the wound portion.

### Claim 5 (depends on 1)

The humidifier according to claim 1, wherein segments with blind dry-gas channels and segments with blind wet-gas channels are arranged alternatingly side-by-side on each of the first frontal area and the second frontal area.

### Claim 6 (depends on 1)

The humidifier according to claim 1, wherein segments with blind dry-gas channels on the first frontal area correspond to segments with open dry-gas channels on the second frontal area, and
wherein segments with open wet-gas channels on the first frontal area correspond to segments with blind wet-gas channels on the second frontal area.

### Claim 7 (depends on 1)

The humidifier according to claim 1, wherein a number of the segments corresponds to dividing 360 by an integer number, such that a remainder of the dividing equals zero.

### Claim 8 (depends on 1)

The humidifier according to claim 1, wherein each of the first spacer layer and the second spacer layer comprises a grid being crossed by the first spacer layer or the second spacer layer in two planes.

### Claim 9 (depends on 1)

The humidifier according to claim 1, wherein the wound portion has one among a cylindrical cross-section, a triangular cross-section, a rectangular cross-section, a hexagonal cross-section, an elliptical cross-section, a set of wound portions with a hexagonal cross-section.

### Claim 10

A process of manufacturing a humidifier, the process comprising:
forming an enclosure by:
providing a first part of a semipermeable membrane;
arranging a first spacer layer on top of the first part of the semipermeable membrane;
providing broken tracks of sealing material at edges of the first part of the semipermeable membrane to form wet-gas channels;
arranging a second part of the semipermeable membrane;
arranging a second spacer layer on top of the second part of the semipermeable membrane; and
providing broken tracks of the sealing material at edges of the second part of the semipermeable membrane to form dry-gas channels; and
forming a wound portion of the humidifier by winding the enclosure around a central axis.

### Claim 11 (depends on 10)

The process according to claim 10, wherein a length and a position of the broken tracks of the sealing material is adapted with a total length of the enclosure according to an actual radius of the wound portion.