# US 9,517,432 B1 · Dehumidifier

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,517,432 B1
- Document ID: US9517432B1
- Status: Granted
- Kind: B1
- Application number: 14/748,426
- Filed: 2015-06-24
- Published: 2016-12-29
- Granted: 2016-12-13
- Earliest claimed: 2015-06-24
- Applicants: Hsiu-Fen Wang
- Inventors: Hsiu-Fen Wang
- Web page: https://patentgrep.com/patent/US9517432B1

## CPC

- B01D 53/0438: {Cooling or heating systems}
- B01D 53/26: Drying gases or vapours
- B01D 2259/40096: by using electrical resistance heating
- B01D 2259/45: Gas separation or purification devices adapted for specific applications
- 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)

## Abstract

A dehumidifier is revealed. A moisture-absorbing package comprises a pouch made of a fabric material having good breathability and hygroscopic substances filled in the pouch. A humidity-indicating unit made of a humidity sensing agent is mounted on an outer surface of the pouch, whereby upon saturation of water vapor as absorbed by the hygroscopic substances in the pouch, the humidity-indicating unit changes the color for indicating the timing of regenerating the hygroscopic substances. When the moisture-absorbing package is saturated with moisture, it is put in a box, and the box is put at an air outlet of a blowing device. The air blown from a blower of the blowing device is heated by an electric heating element and blown to the box for drying the moisture-absorbing package in the box to regenerate it. Then, the moisture-absorbing package removed from the box is put in different space to absorb moisture independently.

## Claims

### Claim 1

A dehumidifier, comprising:
a moisture-absorbing package, comprising:
a pouch, made of a fabric material and formed with a plurality of aeration holes;
a plurality of granular hygroscopic substances, filled in the pouch; and
a humidity-indicating unit, made of a humidity sensing agent and mounted on an outer surface of the pouch, whereby upon saturation of water vapor as absorbed by the hygroscopic substances in the pouch, the humidity-indicating unit changes the color;
a blowing device, comprising:
a hollow base, having an air outlet;
a blower, set in the hollow base; and
an electric heating element, set in the hollow base; and
a box, put at the air outlet of the hollow base of the blowing device, wherein the box has a space for putting the moisture-absorbing package and is formed with a plurality of vias communicated with the space,
wherein the moisture-absorbing package can be put in the box to absorb moisture or can be separated from the box to absorb moisture independently.

### Claim 2 (depends on 1)

The dehumidifier according to claim 1, the blowing device further comprising a switch, coupled with the blower and the electric heating element for switching between a ventilation mode and a dry mode.

### Claim 3 (depends on 1)

The dehumidifier according to claim 1, wherein the periphery of an opening of the space of the box is formed with a flange to abut to the air outlet of the hollow base for closing the air outlet of the hollow base.