# US 2015/0147951 A1 · Heating element housing device

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- Number: US 2015/0147951 A1
- Document ID: US20150147951A1
- Status: Published application
- Kind: A1
- Application number: 14/405,150
- Filed: 2013-07-23
- Published: 2015-05-28
- Earliest claimed: 2012-08-01
- Assignees: Panasonic Intellectual Property Management Co., Lt D.
- Applicants: Panasonic Intellectual Property Management Co., Lt d.
- Inventors: Naoyuki Funada; Kunio Kiyomoto; Takahiro Sahasi; Shogo Maeda
- Web page: https://patentgrep.com/patent/US20150147951A1

## CPC

- H05K 7/20136: {Forced ventilation, e.g. by fans (H05K7/202 takes precedence)}
- H05K 7/206: {Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A heating element housing device (7) comprises a heat exchange device (6) for cooling inside a cabinet (1) by exchanging heat between internal air (8) and external air (9). An exterior fan (22a) is disposed at a bottom portion of the cabinet (1) and an interior fan (21a) is disposed at an upper portion of the cabinet (1). A case (10) houses a heat exchanger (2). The heat exchanger (2) is provided with an internal air intake port (14), an internal air outlet port (15) and an external air intake port (16). An external air outlet port (11) is provided on a side of the case (10) opposite to a cabinet door (3) for blowing out the external air (9). The exterior fan (22a) and the interior fan (21a) are both centrifugal-type fans.

## Claims

### Claim 1

A heating element housing device having a cabinet for housing a heating element and a heat exchange device for cooling inside the cabinet by heat exchange between internal air inside the cabinet and external air, the heating element housing device comprising:
an external fan for blowing the external air into a bottom portion of the cabinet;
an internal fan for blowing the internal air into an upper portion of the cabinet; and
a case for housing a heat exchanger disposed on an outer face of a cabinet door forming a lateral face of the cabinet,
wherein, the heat exchanger is provided with
an internal air intake port communicating with the internal fan,
an internal air outlet port communicating with an inside of the cabinet and
an external air intake port communicating with the exterior fan, and
wherein an external air outlet port is disposed on a surface of the case opposite to the cabinet door for blowing out the heat-exchanged external air through the heat exchanger, and the exterior fan and the interior fan are centrifugal-type fans having an exterior fan intake port and an interior fan intake port respectively located below them.

### Claim 2 (depends on 1)

The heating element housing device according to claim 1, wherein the inside of the cabinet is vertically separated into two spaces by a partition plate for disposing the heating element above the partition plate and the exterior fan below the partition plate.

### Claim 3 (depends on 1)

The heating element housing device according to claim 1, wherein an exterior fan unit for housing the exterior fan is disposed at the bottom portion of the cabinet.