Ceiling-embedded air conditioner

Patent metadata

Field	Value
Publication number	US-10041691-B2
Application number	US-201615077383-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Mar 26, 2015
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A ceiling-embedded air conditioner includes: a main unit; a decorative panel having an outer frame portion, an inner frame portion disposed more inside than the outer frame portion, and connection portions connecting the outer frame portion and the inner frame portion at corner portions; a blowoff path disposed between the outer frame portion and the inner frame portion; blowoff openings formed between the adjacent connection portions in the blowoff path; and wind direction plates covering the blowoff path. The wind direction plates include shaft portions. Plate-like bearing support columns are erected from the connection portions. The bearing support columns include at the tips shaft holes for supporting pivotally the shaft portions and include ventilation holes between the shaft holes and the connection portions.

First claim

What is claimed is:

1. A ceiling-embedded air conditioner comprising:
a box-shaped main unit that is adapted to be embedded in a ceiling of an air-conditioned room, and includes a blowing fan and a heat exchanger surrounding the blowing fan thereinside;
a square decorative panel that is mounted on a lower surface of the main unit and is adapted to cover the ceiling, the decorative panel including an outer frame portion, an inner frame portion disposed more inside than the outer frame portion, and connection portions connecting the outer frame portion and the inner frame portion at corner portions;
a blowoff path that extends along four sides of the decorative panel between the outer frame portion and the inner frame portion to be formed in a rectangular annular shape;
a blowoff opening that is an opening present between two connection portions adjacent to each other in the blowoff path;
a corner blowoff portion that is formed at each of the connection portions, and is included in the blowoff path with the blowoff opening; and
a wind direction plate that is provided along each side of a square of the decorative panel to cover the blowoff path and is longer than a long side of the blowoff opening,
wherein a part of conditioned air heat-exchanged with a refrigerant by the heat exchanger is blown from the blowoff opening at each side of the blowoff path to the air-conditioned room, and a remainder of the conditioned air is flown from the blowoff opening at each side of the blowoff path to the corner blowoff portion at each corner of the blowoff path, and blown from the corner blowoff portion at each corner of the blowoff path to the air-conditioned room,
the wind direction plate includes a shaft portion,
a plate-like bearing support column is erected from each of the connection portions,
the bearing support column includes at a tip a shaft hole for supporting pivotally the shaft portion and includes a ventilation hole between the shaft hole and each of the connection portions, through which the conditioned air flowing from the blow off opening at each side of the blowoff path to the corner blowoff portion at each corner of the blowoff path passes,
the main unit includes a main body blowoff opening at each side of a bottom surface,
the connection portions connect upper portions of the outer frame portion and the inner frame portion at the corner portions,
the blowoff opening is opened toward the main unit between the two connection portions adjacent to each other to communicate with the main body blowoff opening, and
the corner blowoff portion is formed under each of the connection portions, and is covered with the wind direction plate from a lower side of the blow off path.

2. A ceiling-embedded air conditioner comprising:
a box-shaped main unit that is adapted to be embedded in a ceiling of an air-conditioned room, and includes a blowing fan and a heat exchanger surrounding the blowing fan thereinside;
a square decorative panel that is mounted on a lower surface of the main unit and is adapted to cover the ceiling, the decorative panel including an outer frame portion, an inner frame portion disposed more inside than the outer frame portion, and connection portions connecting the outer frame portion and the inner frame portion at corner portions;
a blowoff path that extends along four sides of the decorative panel between the outer frame portion and the inner frame portion to be formed in a rectangular annular shape;
a blowoff opening that is an opening between two connection portions adjacent to each other in the blowoff path;
a corner blowoff portion that is formed at each of the connection portions, and is included in the blowoff path with the blowoff opening;
a wind direction plate that is provided along each side of a square of the decorative panel to cover the blowoff path and is longer than a long side of the blowoff opening;
a motor;
a motor cover including a motor housing portion; and
a shaft portion that is included in the wind direction plate and is pivotally supported and turned by a bearing portion of the motor,
wherein a part of conditioned air heat-exchanged with a refrigerant by the heat exchanger is blown from the blowoff opening at each side of the blowoff path to the air-conditioned room, and a remainder of the conditioned air is flown from the blowoff opening at each side of the blowoff path to the corner blowoff portion at each corner of the blowoff path, and blown from the corner blowoff portion at each corner of the blowoff path to the air-conditioned room,
the motor is housed in the motor housing portion of the motor cover and is fixed to each of the connection portions together with the motor cover from a front surface side of the decorative panel,
the motor housing portion includes a bearing surface surrounding the bearing portion on a blowoff opening side,
the bearing surface inclines from a peak of the motor housing portion toward the blowoff opening so that the remainder of the conditioned air is flown to the corner blowoff portion at each corner of the blowoff path along the bearing surface,
the main unit includes a main body blowoff opening at each side of a bottom surface,
the connection portions connect upper portions of the outer frame portion and the inner frame portion at the corner portions,
the blowoff opening is opened toward the main unit between the two connection portions adjacent to each other to communicate with the main body blowoff opening, and
the corner blowoff portion is formed under each of the connection portions, and is covered with the wind direction plate from a lower side of the blow off path.

3. The ceiling-embedded air conditioner according to claim 1 , wherein the wind direction plate includes a wind direction portion covering the lower side of the blow off path opposed to the blowoff opening, and an auxiliary wind direction portion positioned at each end of the wind direction portion and covering the corner blowoff portion, and
the main unit further includes a rectifier plate arranged at the main body blowoff opening and including a curved surface to flow the conditioned air to the bearing support column.

4. The ceiling-embedded air conditioner according to claim 2 , further comprising a panel heat insulating member arranged at each side of the blowoff path,
wherein the motor cover further includes a bottom path formed adjacent to the motor housing portion to be attached to each of the connection portions, a lock portion arranged at a side of the outer frame portion to engage the decorative panel, a wall surface arranged at a side of the inner frame portion, and a rib arranged inside the wall surface to house a part of the panel heat insulating member between the wall surface and the rib, and
the bearing surface includes a first inclined portion formed between the bearing portion and the lock portion, and a second inclined portion formed between the bearing portion and the bottom path.

5. The ceiling-embedded air conditioner according to claim 2 , wherein the wind direction plate includes a wind direction portion covering the lower side of the blow off path opposed to the blowoff opening, and an auxiliary wind direction portion positioned at each end of the wind direction portion and covering the corner blowoff portion, and
the main unit further includes a rectifier plate arranged at the main body blowoff opening and including a curved surface to flow the conditioned air to the motor cover.

Assignees

• Fujitsu General Ltd

Inventors

• Fujita Naoto

Classifications

• F24F2221/14

  mounted on the ceiling · CPC title

• F24F13/14

  built up of tilting members, e.g. louvre · CPC title

• F24F13/20

  Casings or covers · CPC title

• F24F1/0047

  mounted in the ceiling or at the ceiling · CPC title

• F24F1/0022 Primary

  Centrifugal or radial fans · CPC title