# US 8,790,454 B2 · Heat exchanger having dehumidifying liquid and dehumidifier having the same

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- Number: US 8,790,454 B2
- Document ID: US8790454B2
- Status: Granted
- Kind: B2
- Application number: 13/213,296
- Filed: 2011-08-19
- Published: 2012-10-11
- Granted: 2014-07-29
- Earliest claimed: 2011-04-05
- Assignees: Korea Institute of Science and Technology
- Applicants: Dae-Young Lee; Seo Young Kim
- Inventors: Dae-Young Lee; Seo Young Kim
- Web page: https://patentgrep.com/patent/US8790454B2

## CPC

- F28D 3/02: with tubular conduits
- F28D 3/04: Distributing arrangements
- F28F 1/128: {Fins with openings, e.g. louvered fins}
- F24F 3/1417: {with liquid hygroscopic desiccants}
- F28D 5/02: in which the evaporating medium flows in a continuous film or trickles freely over the conduits
- F28D 2021/0038: {for drying or dehumidifying gases or vapours}
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- 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)

## Abstract

A heat exchanger having an extended surface plate includes a plurality of heat exchanging bodies having therein flow paths along which a heat transfer medium flows, and extended surface plates each disposed between the heat exchanging bodies and having inclined surfaces in horizontal and vertical directions. Also disclosed is a dehumidifier having the heat exchanger. Moisture in the air may be effectively absorbed by a dehumidifying liquid, and the heat exchanger may have enhanced structural strength.

## Claims

### Claim 1

A heat exchanger having an extended surface plate, the heat exchanger comprising:
a plurality of heat exchanging bodies having therein flow paths along which a heat transfer medium flows; and
extended surface plates, each disposed to contact facing surfaces of the heat exchanging bodies, and configured to allow a dehumidifying liquid supplied between the heat exchanging bodies to flow therealong,
wherein when a supply direction of the dehumidifying liquid is a vertical direction, the extended surface plate has a zigzag-form in the vertical direction, and has a plurality of bending portions in a horizontal direction,
and the extended surface plate comprises at least one of a corrugated form and a zigzag form in the horizontal direction.

### Claim 2 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein the extended surface plate comprises the corrugated form in the horizontal direction.

### Claim 3 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein the extended surface plate comprises the zigzag form in the horizontal direction.

### Claim 4 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein the extended surface plate is formed of nonwoven fabric.

### Claim 5 (depends on 4)

The heat exchanger having an extended surface plate of claim 4, wherein the extended surface plate is formed of polyethyleneterephthalate (PET) nonwoven fabric.

### Claim 6 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein the heat exchanging bodies undergo a surface processing for enhanced wet property.

### Claim 7 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein a surface of the extended surface plate undergoes hydrophilic coating.

### Claim 8 (depends on 1)

The heat exchanger having an extended surface plate of claim 1, wherein the extended surface plate is provided with a plurality of passing holes through which a dehumidifying liquid flows down, the dehumidifying liquid supplied from an upper side and flowing along a plurality of inclination surfaces repeatedly formed in the horizontal and the vertical directions.

### Claim 9 (depends on 8)

The heat exchanger having an extended surface plate of claim 8, wherein at least one of the passing holes is formed on a bottom surface of a bending portion.