# US 10,119,746 B2 · Indoor unit and air-conditioning apparatus

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- Number: US 10,119,746 B2
- Document ID: US10119746B2
- Status: Granted
- Kind: B2
- Application number: 15/027,287
- Filed: 2014-10-09
- Published: 2016-08-25
- Granted: 2018-11-06
- Earliest claimed: 2013-12-25
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Masaaki Maruyama; Takaaki Takishita; Akinori Toyoda; Tatsuo Furuta; Hiroyuki Hatakeyama; Naoya Matsunaga; Takahiro Komatsu
- Web page: https://patentgrep.com/patent/US10119746B2

## CPC

- F25D 21/14: Collecting or removing condensed and defrost water; Drip trays
- F24F 13/20: Casings or covers
- F24F 13/22: Means for preventing condensation or evacuating condensate
- F24F 13/222: {for evacuating condensate}
- F24F 2006/006: {with water treatment}
- F24F 2013/228: {Treatment of condensate, e.g. sterilising}
- F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B)
- 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

An indoor unit according to the present invention includes a securing plate provided at an upper edge of a sidewall of a drain pan that collects drain water generated from an indoor heat exchanger, and an antimicrobial-agent-containing case that contains an antimicrobial agent and includes a case frame positioned in an area where the drain water is collected, a case-attaching portion conforming to the securing plate and being detachably attached to the securing plate, and an arm connecting the case frame and the case-attaching portion. The antimicrobial-agent-containing case is attached to the securing plate from an opening of an air inlet from which air is taken into a body.

## Claims

### Claim 1

An indoor unit comprising:
an air-sending device from which air is taken into a body;
a securing plate provided at an upper edge of a sidewall of a drain pan for collecting drain water generated from a heat exchanger through which the air blown by the air-sending device passes; and
an antimicrobial-agent-containing case that contains an antimicrobial agent and includes
a container portion positioned in an area where the drain water is collected,
a case-attaching portion conforming to the securing plate and being detachably attached to the securing plate, and
an arm connecting the container portion and the case-attaching portion,
wherein:
the antimicrobial-agent-containing case is attachable to the securing plate from an opening of the drain pan facing the air-sending device;
the securing plate has an attaching hole;
an attaching space having a recessed shape is provided below the securing plate;
a tab portion is provided below the case-attaching portion of the antimicrobial-agent-containing case; and
the antimicrobial-agent-containing case is fixed to the drain pan at a position where the tab portion which is inserted into the attaching hole is visible from the attaching space.

### Claim 2 (depends on 1)

The indoor unit of claim 1, wherein
at least a case frame serving as the container portion, a case lid, and a hinge connecting the case frame and the case lid of the antimicrobial-agent-containing case are formed as an integral body.

### Claim 3 (depends on 1)

An air-conditioning apparatus configured to condition air, comprising:
the indoor unit of claim 1; and
an outdoor unit.