JP2003114047A - Ceiling inspection/suction port for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a ceiling suction port also as an inspection door. SOLUTION: A prismatic frame-like case 6, extending from an opening la bored on the ceiling 1 toward the space on the rear side of the ceiling, is fixed to the rear side of the ceiling with a fixing member 7, and a cover 10 is journaled to one side of the upper end 6a of the frame-like case 6. The angle of inclination of the cover 10 can be changed by an expanding/contracting mechanism 11. A lattice body 8 is attached to the lower part of the frame-like case 6 by an attaching/detaching device 9. At the time of air conditioning, the cover 10 is inclined to guide the indoor air in the direction of the arrow A. At the time of inspection, the attaching/detaching device 9 is detached to remove the lattice body 8, and the expanding/contracting mechanism 11 is expanded to full open the cover 10 so that an inspector goes in/out of the opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus in which a suction port of an air intake duct is arranged in the back of the ceiling, and the air in the room is sucked from the ceiling suction port to the back of the ceiling and returned to the air conditioner via the air intake duct. Regarding the ceiling suction port, the ceiling suction port,
It is also used as an inspection port in the ceiling.

[0002]

2. Description of the Related Art A conventional air suction port is provided on the ceiling exclusively for air suction. An inspection port for inspecting the duct and wiring arranged behind the ceiling is provided on the ceiling at a position different from the suction port, and is normally closed by a ceiling plate or a closing plate.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to obtain an indoor air suction port that can also be used as an inspection port behind the ceiling in order to simplify the ceiling structure and reduce the construction cost.

[0004]

[Means for solving the problems]
As described in each claim, the air conditioner ceiling inspection suction port according to claim 1 extends from an opening opened in the ceiling into a space behind the ceiling, and is fixed to the ceiling behind the frame-shaped case. A grid body detachably fixed to the lower part of the case and a cover whose one end is axially attached to one side of the upper end of the frame-shaped case are provided, and the inclination angle of the cover with respect to the upper end corresponds to the intake air amount. It is characterized in that it can be changed from an angle to a substantially fully opened state by an expansion / contraction mechanism provided between the frame-shaped case and the cover.

According to the above means, the indoor air sucked into the suction port during air conditioning is guided toward the intake duct by the cover. At the time of inspection, an inspector can go in and out by removing the lattice and leaving the cover fully open.

The air conditioner ceiling inspection suction port according to claim 2 extends from an opening opened in the ceiling into the space behind the ceiling and is fixed to the back of the ceiling, and is detachably attached to the lower portion of the frame-like case. The frame-shaped case is provided with a fixed lattice, and a lateral ventilation hole that opens into a space above the ceiling is provided in the frame-shaped case, and a removable cover is placed on the upper end of the frame-shaped case.

According to the above means, the room air sucked into the suction port during air conditioning is sucked into the intake duct through the ventilation hole of the frame-shaped case. At the time of inspection, inspectors can go in and out by removing the lattice and removing the cover.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment,
1A is a vertical cross-sectional view, FIG. 1B is a plan view, and FIG. 1C is a bottom view. In FIG. 1, 1 is a ceiling of a building, 1a is an opening thereof, 2 is a ceiling suspension member, 3 is a receiving member, 4 is a space above the ceiling. The ceiling suction port 5 is mainly composed of a rectangular tubular frame-shaped case 6 having a side of 450 mm or more so that an inspector can enter and exit. The fixing member 7 that extends into the back space 4 and is fixed to the outside of the middle portion is fixed to the receiving member 3 and attached to the building.

A lattice member 8 arranged under the frame-shaped case 6
Includes a large number of grid plates 8 in a frame 8b provided with a flange 8a.
c is fixed in parallel with a slight gap, and is provided so as to ventilate but to prevent foreign matter from passing through, and is normally attached with the flange 8a covering the vicinity of the opening 1a. .

Attaching / detaching devices 9 for attaching / detaching the lattice body 8 to / from the frame-shaped case 6 are provided above the four corners of the lattice body 8, and the attaching / detaching devices 9 are integrally fixed to the four corners of the frame 8b. Hanging pieces 9a, bolts 9b inserted into the holes of the hanging pieces 9a, and female screw members 9 fixed to the four corners of the frame-shaped case 6.
When the lattice body 8 is attached to or detached from the frame-shaped case 6,
The bolt 9b is swung by a tool inserted from below to be screwed into or removed from the female screw member 9c.

The cover 10 is pivotally attached to one end of the upper end 6a of the frame-shaped case 6 by a hinge 10a, and the inclination of the cover 10 is changed by an expansion / contraction mechanism 11. The expansion / contraction mechanism 11 includes a link 11a axially attached to the frame-shaped case 6, a link 11b axially attached to the cover 10, and a tightening screw 1 for connecting both links.
1c, and if the tightening screw 11c is loosened, the cover 10
The inclination can be changed, and the inclination can be fixed by tightening. When the cover 10 is in the position shown by the solid line in the figure, the air in the room passes through the frame-shaped case 6 and the cover 1
It is guided by the lower surface of 0 and flows in the direction of arrow A, and is sucked into the suction port of a duct (not shown).

At the time of inspecting the space above the ceiling, the inspector can move in and out by inclining the cover 10 to the fully open position of the virtual line after removing the lattice 8. After the inspection, the cover 10 is returned to the solid line position, the tightening screw 11c is tightened and fixed, and the lattice body 8 is fixed by the attaching / detaching device 9. With the cover 10 in this state, it is possible to reduce dust falling into the room from the space above the ceiling 4 when the air conditioner is not operating.

Next, FIG. 2 shows a second embodiment,
(A) is a vertical cross-sectional view, (B) is a plan view, (C) is a bottom view, the same reference numerals are given to portions common to the embodiment of FIG.
The description is omitted. The ceiling suction port 15 shown in FIG. 2 is provided with ventilation holes 17 that open to the ceiling back space 4 on one or all of the four sides of the frame-shaped case 16, and the upper end 16 a of the frame-shaped case 16 has The cover 18 is placed.

At all times, the cover 18 is placed on the frame-shaped case 16 to close the upper end, and the air in the room is sucked from the ventilation hole 17 toward the suction duct as indicated by arrow A. Then, when inspecting the space 4 above the ceiling, after removing the lattice body 8,
The inspector can go in and out by removing it and placing it on the ceiling. After the inspection, it suffices to return the cover lid 18 and the lattice body 8 to their original positions, and this cover lid 18 can prevent dust from falling into the room from inside the ceiling when the air conditioner is not operating.

The attachment / detachment device 9 shown in each of the above-described embodiments can be appropriately changed in position, number and structure, and can be provided, for example, at the middle portion of the side instead of at the four corners shown in the drawing, and can be provided below It can be provided near the flange 8a.

[0016]

As described above, according to the means of claim 1,
The ceiling suction port can be used for sucking air and inspecting the space above the ceiling, and the inclined cover can guide the suction air and reduce dust falling during non-air conditioning. Also, in the means of claim 2, the ceiling suction port can be used for air suction and inspection of the space above the ceiling, and the suction air can be guided by the ventilation hole opened in the frame-shaped case, and the dust can be removed by the cover during non-air conditioning. This has the effect of reducing the number of drops.

[Brief description of drawings]

FIG. 1 is a three-view drawing of a first embodiment of the present invention.

FIG. 2 is likewise a three-sided view of the second embodiment.

[Explanation of symbols]

1 ceiling 4 space behind the ceiling 5,15 Ceiling suction port 6,16 Frame case 8 Lattice body 9 Attachment / Detachment device 10 cover 11 scaling mechanism 17 Vent hole 18 Cover

Claims (2)

[Claims] 1. A frame-shaped case that extends from an opening opened in the ceiling into the space above the ceiling and is fixed to the back of the ceiling, a grid body that is detachably fixed to the lower part of the frame-shaped case, and the frame-shaped case. A cover having one end axially attached to one side of an upper end of the case, and an inclination angle of the cover with respect to the upper end is provided between the frame-shaped case and the cover from an angle corresponding to an intake air amount to a substantially fully opened state. The ceiling inspection suction port for air conditioning, which can be changed by the expansion / contraction mechanism. 2. A frame-shaped case, which extends from an opening opened in the ceiling into the space above the ceiling and is fixed to the back of the ceiling, and a grid body detachably fixed to the lower part of the frame-shaped case, An air-conditioning ceiling inspection and suction port characterized in that a frame-shaped case is provided with a lateral ventilation hole that opens into the space behind the ceiling, and a removable cover is placed on the upper end of the frame-shaped case.