CEILING MOUNTED VENTILATION FAN

• US 20130084793A1
• Filed: 09/25/2012
• Published: 04/04/2013
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation), Panasonic Ecology Systems Guangdong Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation), Panasonic Ecology Systems Guangdong Company Limited (Panasonic Holdings Corporation)
• Inventors: WU, Yannong, YANG, Decong
• Granted Patent: US 9,746,195 B2
• Time in Patent Office: Days
• US Class Current: 454/248
• CPC Class Codes: F24F 13/078 combined with lighting fixtures
• CPC Class Codes: F24F 7/007 with forced flow using ducting systems F24F7/06

Abstract

A ceiling mounted ventilation fan comprises a main housing including a first opening communicating with a duct and a second opening communicating with inside of a room, and a fan unit including a fan casing having an air inlet opened in the main housing, and the fan casing includes a first engagement part releasably engaged with the first opening of the main housing, and a second engagement part releasably engaged with an inner wall of the main housing, positioning of the fan casing in an installation position is achieved in a state that the first engagement part is engaged with the first opening and the second engagement part is engaged with the inner wall of the main housing, and a state of the engagement can visually be confirmed through the second opening in a state that the positioning is achieved.

Claims

1. A ceiling mounted ventilation fan comprising:

a main housing; and

a fan unit installed in the main housing, wherein

the main housing includes a first opening communicating with a duct connected to an air outlet of the fan unit, and a second opening formed on bottom part of the main housing so as to communicate with inside of a room,

the fan unit includes a fan, and a fan casing placed so as to surround the fan, the fan casing having an air inlet opened in the main housing, and

the fan casing includes a first engagement part releasably engaged with the first opening of the main housing, and a second engagement part releasably engaged with an inner wall of the main housing, wherein

positioning of the fan casing in an installation position in the main housing is achieved in a state that the first engagement part is engaged with the first opening and the second engagement part is engaged with the inner wall of the main housing, and

a state of engagement between the second engagement part and the inner wall of the main housing can visually be confirmed through the second opening in a state that the positioning is achieved.

2. The ceiling mounted ventilation fan according to claim 1, further comprising a guiding member for positioning and guiding an engagement position for the first engagement part of the fan casing and the first opening of the main housing with one end of the guiding member fixed to the fan casing and with the other end thereof being in contact with an inner wall surface of the main housing.

3. The ceiling mounted ventilation fan according to claim 2, further comprising a third engagement part fixed to the inner wall so as to protrude from the inner wall surface of the main housing, the third engagement part being releasably engaged with the second engagement part, wherein

the second engagement part is placed so as to fit a protruding shape of the third engagement part, thereby the second engagement part and the third engagement part are brought into an engaged state.

4. The ceiling mounted ventilation fan according to claim 3, wherein the second engagement part and the third engagement part are fixed by a fastening member in the engaged state, and

a surface of the second engagement part that is used for fixation by the fastening member is slanted so as to face the second opening.

5. The ceiling mounted ventilation fan according to claim 3, wherein the first engagement part has a first engagement claw that is to be inserted into the first opening and that extends in a horizontal direction, wherein

either the second engagement part or the third engagement part has a second engagement claw that is to be inserted into a hole formed on the other part and that extends in the horizontal direction, and

a length of the second engagement claw is smaller than that of the first engagement claw.

6. The ceiling mounted ventilation fan according to claim 4, wherein the first engagement part has a first engagement claw that is to be inserted into the first opening and that extends in a horizontal direction, wherein

either the second engagement part or the third engagement part has a second engagement claw that is to be inserted into a hole formed on the other part and that extends in the horizontal direction, and

a length of the second engagement claw is smaller than that of the first engagement claw.