# US 9,752,788 B2 · Humidification device

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- Number: US 9,752,788 B2
- Document ID: US9752788B2
- Status: Granted
- Kind: B2
- Application number: 14/781,000
- Filed: 2014-01-13
- Published: 2016-02-25
- Granted: 2017-09-05
- Earliest claimed: 2013-04-05
- Assignees: Denso Corporation
- Applicants: Denso Corporation
- Inventors: Yusuke Komatsubara
- Web page: https://patentgrep.com/patent/US9752788B2

## CPC

- F24F 3/1429: {alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode}
- B60H 3/02: Moistening {; Humidity control}
- B60H 3/022: {for only humidifying the air}
- F24F 6/08: using heated wet elements
- B60H 2003/028: {the devices comprising regeneration means}
- F24F 3/1411: {by absorbing or adsorbing water, e.g. using an hygroscopic desiccant}
- 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)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

In an adsorption operation in which the adsorption agent adsorbs water, air in a vehicle compartment flows into an adsorption agent module after being cooled by passing around a heat sink. On the other hand, in a desorption operation in which the water is desorbed from the adsorption agent, the air in the vehicle compartment flows into the adsorption agent module to be humidified without being heated or cooled, and humidified air is cooled by passing around the heat sink and blown into the vehicle compartment. Accordingly, a temperature of the humidified air can be prevented from increasing unnecessarily by a simple configuration with which the air in the vehicle compartment is cooled in the heat sink.

## Claims

### Claim 1

A humidification device for humidifying a humidification-subject space, the humidification device comprising:
a polymeric adsorption agent that adsorbs water in an adsorption operation and desorbs the water in a desorption operation;
a cooler cooling an adsorption air that includes the water to be adsorbed on the polymeric adsorption agent; and
a blower blowing the air in the humidification-subject space, wherein
in the adsorption operation, the cooler decreases a temperature of the adsorption air to be lower than an air temperature in the humidification-subject space, and
in the desorption operation, the water adsorbed on the polymeric adsorption agent is desorbed to the air, the air flowing from the humidification-subject space without being heated or cooled,
the adsorption operation and the desorption operation are switched by switching between (i) a ventilation passage through which the air blown by the blower flows to the polymeric adsorption agent after being cooled by the cooler and (ii) the ventilation passage through which the air blown by the blower flows to the polymeric adsorption agent without being cooled by the cooler.

### Claim 2 (depends on 1)

The humidification device according to claim 1, wherein
the adsorption air is the air in the humidification-subject space.

### Claim 3 (depends on 1)

The humidification device according to claim 1, wherein
the cooler cools air that is humidified by water desorbed from the polymeric adsorption agent, in the desorption operation.

### Claim 4 (depends on 1)

The humidification device according to claim 1, wherein
the humidification device is disposed in a vehicle, and
the humidification-subject space is a vehicle compartment.

### Claim 5 (depends on 4)

The humidification device according to claim 4, wherein
the cooler cools the adsorption air by a heat exchange between the adsorption air and an outside air outside of the vehicle compartment.

### Claim 6 (depends on 1)

The humidification device according to claim 1, wherein
a temperature in the humidification-subject space is regulated within a specified temperature range by a temperature controller, and
the polymeric adsorption agent is an agent of which adsorbing amount varies by more than or equal to 3 wt % when a relative humidity of air around the agent varies by 10% RH.

### Claim 7 (depends on 1)

The humidification device according to claim 1, wherein
the polymeric adsorption agent, the cooler, and the blower are located in the ventilation passage.