JP2664472B2 - Ceiling embedded air conditioning unit - Google Patents

Description

The present invention relates to an air-conditioning unit embedded in a ceiling suspended in a ceiling space.

(B) Conventional technology The ceiling-embedded air-conditioning unit is configured so that after hanging the unit body in the ceiling space, a decorative panel is attached to this body, and there is a gap between the decorative panel and the ceiling surface. When this occurs, the lid of the decorative panel is opened and the height of the main body is adjusted from the service opening as proposed in Japanese Utility Model Publication No. 62-3620.

(C) Problems to be Solved by the Invention In the ceiling-embedded air-conditioning unit presented in the above publication, the nut of the hanging device is located substantially on the same line as the edge of the service port, so that the installation height of the unit body is reduced. To adjust, the operator must enter the upper body into the ceiling space from the service opening and turn the nut with a tool such as a wrench, so it is checked whether the decorative panel is evenly in contact with the lower surface of the ceiling. Can not turn the nut while looking from below,
There was a problem that it was difficult to adjust the installation height of the unit body.

An object of the present invention is to provide a ceiling-embedded air-conditioning unit that facilitates height adjustment of a unit body.

(D) Means for Solving the Problems According to the present invention, the decorative panel attached to the lower surface of the ceiling is provided with a service opening which is opened and closed by a lid, while the unit main body installed in the ceiling space is used for suspending the main unit. Install the hanging tool and nut just above the service port,
An operating tool for turning the nut from below the service port is provided.

(E) Action Push the unit body from the ceiling hole into the ceiling space,
When a nut is screwed into a hanging tool fixed in advance in the ceiling space, the unit main body is installed in the ceiling space. After that, installing the decorative panel on the unit main body and closing the ceiling hole completes the installation work of the air conditioning unit, but when installing the unit main body in the ceiling space as described above, the installation height of the unit main body is a guide. Therefore, a gap may be formed between the decorative panel and the lower surface of the ceiling. When such a gap is formed, open the lid of the decorative panel, insert the operating tool as an accessory straight from the service port, fit the fitting portion formed at the tip of this operating tool into the nut, and place the lower part of the service port. By turning the operation tool while watching the gap between the decorative panel and the lower surface of the ceiling, the unit main body is installed and fixed at a predetermined height position where the decorative panel contacts the lower surface of the ceiling.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings.
The air-conditioning unit with a built-in ceiling is a unit body (4) in which the fixtures (2a) and (2b) are suspended by the suspenders (3a) and (3b) in the space of the ceiling (1). It is composed of an absorption port (5) provided on the lower surface and communicating with a ventilation path in the main body (4) and a decorative panel (7) having an air outlet (6). With the partition plates (8a) and (8b) of the outlet side ventilation path (9) and the suction side ventilation path (1
0), and a heat exchanger (1)
1) is provided with two double suction type centrifugal blowers (12) and a motor (13) in the suction side ventilation path (10).

The fan case (14) of the centrifugal blower (12) has an upper half fan case part (14a) including a part (15a) of the suction port and a discharge port (16), and another part (15b) of the suction port. And a lower half fan case portion (14b) including the upper half fan case portion (14a). The upper half fan case portion (14a) is integrally formed with one of the sheet metal partition plates (8a) to form the fan case portion (14a). ) Protrudes from the partition plates (8a) and (8b) toward the outlet-side ventilation path (9).

The other partition plate (8b) has one partition plate (8
a) and the fan case (1)
4a) fitting opening (18) and part of suction port (15a)
And a drain pan (19) protruding to the outlet side ventilation path (9) to guide the intake air from the suction side ventilation path (10) to a drain pan (10) for receiving drain water generated in the heat exchanger (11). 20) and are integrally formed of Styrofoam.

The decorative panel (7) has a suction panel (21) removably mounted at the center of the open portion of the panel, and an air filter (22) removably mounted above the suction panel (21). And service ports (23a) and (23b) formed at both ends of the decorative panel (7), and lids (24a) and (24b) for opening and closing the service ports, respectively. Above the suspenders (2a) and (2b) and the nuts (25a) and (25b) that are screwed to the suspenders and support the fixtures (2a) and (2b), are disposed immediately above the suspenders (23a) and (23b). It has become so.

(26) connects these nuts (25a) (25b) to the service port (23
a) An operating tool provided as an accessory for turning from below (23b), (27a) and (27b) are mounting tools (2a) (2
b) A hook provided on the decorative panel (7) to be attached to the decorative panel (7).
And a hook piece (30) are formed.

Next, the installation work of the ceiling-mounted air conditioning unit will be described. First, the unit body (4) is pushed into the ceiling space (32) from the ceiling hole (31) and fixed in the ceiling space (32) in advance. The holes of the attachments (2a) and (2b) of the unit body (4) are fitted to the four hanging members (3a) and (3b) and the nuts (25a) and (25b) are screwed from below to attach the attachment (2a). ) (2
b) is supported by nuts (25a) and (25b), and the main body (4) is installed in the ceiling space (32). Thereafter, as shown in FIG. 3, a screw (34a) is previously fixed to one of the locking pieces (33a) of the fixtures (2a) (2b), and the head of the screw (34a) is fixed. The decorative panel (7) is slid in the direction of the arrow by fitting the large-diameter portion of the daruma hole (28) of the hook (27a) into the hook, so that the small-diameter portion of the daruma hole (28) is And the other engaging piece (33b) has a hook (30) of the hook (27b).
And the decorative panel (7) is engaged with the unit body (4).
Will be temporarily stopped. At the time of this temporary fixing work, the suction panel (21)
Is open or removed. When the screw (34a) is tightened from the open part of the decorative panel (7) and the hook (27b) is attached to the locking piece (33a) with the screw (34b), the makeup The panel (7) is securely fixed to the unit body (4).

By fixing the decorative panel (7) to the unit body (4) in this way, the ceiling hole (31) is closed, and the installation work of the air conditioning unit is completed. At the time of installation in the space (32), the installation height of the main body (4) is set as a guide, and therefore, a gap may be formed between the decorative panel (7) and the lower surface of the ceiling (1). . When such a gap is formed, the lids (24a) and (24b) of the decorative panel (7) are opened as shown in FIG. 4, and the accessory parts are provided through the service ports (23a) and (23b) as shown in FIG. Insert the operating tool (26) straight and insert the fitting (35) formed at the tip of the operating tool into the nut (25a) (2
5b), turning the operation tool (26) with a screwdriver (36) while looking at the gap between the decorative panel (7) and the ceiling (1) under the service opening (23a) (23b),
The height adjustment operation of shifting the unit body (4) upward to a predetermined height position where the decorative panel (7) contacts the lower surface of the ceiling (1) can be easily performed.

When the installation work is completed, and the centrifugal fan (24) is driven by the electric motor (13) during the cooling / heating operation, the decorative panel (7)
Part of the room air sucked into the suction side ventilation path (10) from the suction port (5) of the fan case through the air filter (22) passes through the air guide part (19) of the partition plate (8b) and the upper half of the fan case. While the part (14a) is sucked into a part (15a) of the suction port, the remainder of the room air is sucked into the other part (15b) of the suction port in the lower half part (14b) of the fan case and discharged (16). The air is blown out from the outlet to the blow-side ventilation path (9). Thereafter, the blown indoor air is distributed in the left-right direction, cooled by the heat exchanger (11) at the time of cooling, heated at the time of heating, and then heated by the heat insulating sheet (37).
And is blown out in two directions from the outlet (6) of the decorative panel (7) to cool and heat the room.

If the heat exchanger (11) and the drain pan (20) become dirty due to the cooling / heating operation, the suction panel (21), the air filter (22), the fan case (14), and the centrifugal fan (2)
4) can be cleaned from the opening (18) by pulling down from the opening of the decorative panel (7). Also, the unit body (4) is provided with a support case (38) having a U-shaped cross section fixed to the outer wall and an electrical case (39) having a U-shaped cross section fitted into the case. Remove the suction panel (21) and the lid (24a) and lower the electrical case (39) along the support case (38) to open the electrical case (39) from the open side (39a) of the electrical case (39). Inspection work of electrical components can be performed.

(G) Effects of the Invention According to the present invention, a suspender and a nut for suspending the main body of the ceiling-embedded air-conditioning unit are provided just above the service port provided in the decorative panel, and the nut is provided. Is equipped with an operating tool for turning the nut from below the service opening, so that the nut can be turned with the operating tool while looking at the gap between the decorative panel and the lower surface of the ceiling from a position lower than the ceiling. The work of adjusting the installation height of the unit main body for bringing the unit into close contact with the lower surface of the ceiling can be easily performed.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a cross-sectional view of an air-conditioning unit embedded in a ceiling, and FIG. 2 is II-II in FIG.
FIG. 3 is a cross-sectional view of the ceiling-mounted air-conditioning unit cut along a line, FIG.
The figure is an exploded perspective view of the ceiling-embedded air-conditioning unit, and FIG. 5 is a sectional view showing a height-adjusted state of the ceiling-embedded air-conditioning unit. (1) ... ceiling, (3a) (3b) ... hanging equipment, (4) ...
Unit body, (5) ... intake port, (6) ... outlet, (7) ... decorative panel, (9) (10) ... ventilation path, (1
1) Heat exchanger (12) Blower (23a) (23b)
…… Service mouth, (24a) (24b) …… Lid, (25a) (25
b) Nut, (26) Operating tool.

Claims (1)

(57) [Claims] 1. A decorative panel having a heat exchanger and a blower, and installed in a ceiling space and installed in a ceiling space, and a decorative panel provided on a lower surface of the ceiling and having a suction port and an air outlet communicating with a ventilation path in the unit body. In the ceiling-embedded air-conditioning unit, the decorative panel is provided with a service port which is opened and closed by a lid, while the unit body is provided with a suspender and a nut for suspending the main body. And an operating tool for turning the nut from below the service port.