Ceiling-embedded air conditioner

Patent metadata

Field	Value
Publication number	US-2016102872-A1
Application number	US-201514879448-A
Country	US
Kind code	A1
Filing date	Oct 9, 2015
Priority date	Oct 10, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

A ceiling-embedded air conditioner includes: a ceiling-embedded casing body; a turbo fan disposed inside the casing body; a heat exchanger disposed inside the casing body on an outer peripheral side of the turbo fan; and an electrical equipment box disposed along a part of the heat exchanger at the upstream side of a ventilation direction. The casing body has a square shape with first to fourth side plates. The heat exchanger has first to fourth heat exchange portions bent along the first to fourth side plates respectively. An end portion of the first heat exchange portion and an end portion of the fourth heat exchange portion are disposed at a corner for tube connection out of the four corners of the casing body. The electrical equipment box is disposed to extend from the corner for tube connection toward the first heat exchange portion and the fourth heat exchange portion.

First claim

What is claimed is:

1 . A ceiling-embedded air conditioner comprising:
a ceiling-embedded casing body that has an air suction path at the center of a lower surface and has an air blowoff path around the air suction path; a turbo fan that is disposed inside the casing body; a heat exchanger that is disposed inside the casing body on an outer peripheral side of the turbo fan; and an electrical equipment box that is disposed along a part of the heat exchanger at the upstream side of a ventilation direction, wherein the casing body has a square shape with first to fourth side plates, the heat exchanger has first to fourth heat exchange portions bent along the first to fourth side plates respectively, an end portion of the first heat exchange portion and an end portion of the fourth heat exchange portion are disposed at a corner for tube connection out of the four corners of the casing body, and the electrical equipment box is disposed to extend from the corner for tube connection toward the first heat exchange portion and the fourth heat exchange portion.

2 . The ceiling-embedded air conditioner according to claim 1 , wherein
the electrical equipment box is provided with first and second storage portions coupled to be orthogonal to each other and is formed in an L shape, the first storage portion is disposed from the corner for tube connection along the first heat exchange portion, and the second storage portion is disposed from the corner for tube connection along the fourth heat exchange portion.

3 . The ceiling-embedded air conditioner according to claim 2 , wherein when a length of the first heat exchange portion is designated as L 1 , a length of the fourth heat exchange portion as L 2 , a length of the first storage portion as L 3 , and a length of the second storage portion as L 4 , the electrical equipment box is formed to satisfy the following conditions:
L 3≦1/2× L 1; and
L 4≦1/2× L 2.

4 . The ceiling-embedded air conditioner according to claim 1 , wherein
the electrical equipment box has a tapered surface at a corner between a top surface and a side surface exposed to a ventilation side.

5 . The ceiling-embedded air conditioner according to claim 2 , wherein
the electrical equipment box has a tapered surface at a corner between a top surface and a side surface exposed to a ventilation side.

6 . The ceiling-embedded air conditioner according to claim 3 , wherein
the electrical equipment box has a tapered surface at a corner between a top surface and a side surface exposed to a ventilation side.

Assignees

• Fujitsu General Ltd

Inventors

• Nakamoto Takehiko

Classifications

• F24F1/0047

  mounted in the ceiling or at the ceiling · CPC title

• F24F13/30

  Arrangement or mounting of heat-exchangers · CPC title

• F24F1/0022

  Centrifugal or radial fans · CPC title

• F24F2013/0616

  Outlets that have intake openings · CPC title

• F24F1/00 Primary

  Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station · CPC title