JPH0336816Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ceiling-embedded air conditioner.

BACKGROUND ART Conventionally, this type of ceiling-embedded air conditioner has a structure as shown in FIGS. 4 and 5, for example.

That is, inside the indoor unit 6, a heat exchanger 2, a fan 3, a fan motor 4, and a water tray 5 are provided in the outer shell 1, and a nut 7 is spot-welded to the top surface of the outer shell 1.
The water tray 5 was fixed via a hanging bolt 8 and a fixing nut 9. Further, the panel 10 discharging toward the indoor side is suspended and fixed by thumbscrews 11 via hanging bolts 8 suspended from the indoor unit 6. Also fixing nut 9 and wing screw 1
1 have the same inner diameter.

Problems to be Solved by the Invention However, with this type of structure, for example, when cooling the fan motor 4, voltage is applied to it.
When the fan 3 is rotated, air enters the indoor unit 6 from the room through the center of the panel 10 as shown by the arrow, heat is absorbed by the heat exchanger 2, and cooling is performed from the air outlet 12, as shown in Fig. 5. When the fan 3 rotates as shown by the broken line, the hanging bolt 8 has a large diameter due to the flow of air from the fan 3 to the heat exchanger 2, which creates resistance, disrupting the air flow as shown by the arrow, and causing abnormal noise. A decrease in air volume was also observed. Furthermore, during maintenance, this hanging bolt 8 also serves to fix both the water tray 5 and the panel 10.
When removing the water tray, first remove the thumb screw 11, remove the panel 10 from the indoor unit 6, and then remove the fixing bolt 9, but the inner diameter of the fixing bolt 9 and the thumb screw 11 are the same. Therefore, when removing the fixing bolts 9, a fairly long threaded part must be removed.Since the indoor unit 1 is recessed in the ceiling, the worker has to work in an upward posture for a long time, which reduces work efficiency. It had the problem of being very bad.

In view of the above-mentioned problems, the present invention provides a ceiling-embedded air conditioner for the purpose of reducing air blowing noise during operation.

Means for Solving the Problems In order to solve the above problems, the ceiling-embedded air conditioner of the present invention makes a hole in the ceiling, embeds an indoor unit in the hole, and installs a fan, a A fan motor, heat exchanger and water tray are installed.
The water tray is fixed by a hanging metal fitting suspended from the outer shell of the indoor unit, and the hanging metal fitting is fixed in the same direction as the direction of air flow from the fan.

Effect The present invention has the above configuration, so that the wind from the fan is
Since it is in the same direction as the fixing direction of the hanging metal fitting, it does not create resistance, and therefore, the air blowing noise can be reduced.

Embodiment A ceiling-embedded air conditioner according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a cross-sectional view of a ceiling-embedded air conditioner according to an embodiment of the present invention. The indoor unit 6 is provided with a heat exchanger 2, a fan 3, a fan motor 4, and a water tray 5 in an outer enclosure 1, and each component is suspended and fixed from the ceiling of the outer enclosure 1. A hanging fitting 13 is also suspended from the top plate portion of the outer shell 1 via a fixing plate 14, and the water tray 5 is suspended and fixed with screws 15. In addition, the panel 10 has a butterfly bolt 1 attached to the fixing plate 14.
It is fixed using 6.

FIG. 2 is a cross-sectional view of section AA in FIG. 1, in which the hanging fitting 13 is fixed in the same direction as the direction of the wind from the fan 3 (solid arrow).

FIG. 3 is an enlarged view of the hanging fitting 13, in which the upper part is a convex part that fits into a notch (not shown) in the outer shell 1, and a hole is formed.
The lower part is flanged so that it can be easily fixed with a fixing plate 14 and screws 15.

The ceiling-embedded air conditioner of the present invention will be explained with the above configuration.

In Figure 2, by fixing the hanging metal fitting 13 at an angle in the same direction as the direction of the wind emitted by the fan 3, the hanging metal fitting 13 does not act as a resistance to the wind, and the flow is not disturbed, causing abnormal noise. No decrease in air volume was observed. In addition, in FIG.
Only the water tray 5 is fixed, so when removing the water tray for maintenance, use the butterfly bolt 16
Since the panel 10 can be removed and the screws 15 can be removed in a short time using a tool such as a screwdriver, the operator does not have to work with his head up for a long time, and the work efficiency is also good. Furthermore, the outer shell 1 and the hanging fitting 13 can be easily assembled using screws (not shown) by providing a convex portion and a screw hole in the hanging fitting 13, and providing a notch and a screw hole in the outer shell 1. It has various advantages such as:

Effects of the Invention As is clear from the above embodiments, the ceiling-mounted air conditioner of the present invention has a hole in the ceiling, an indoor unit embedded in the hole, and a fan, a fan motor, and a heat exchanger installed in the indoor unit. A water container and a water tray are provided, and the water tray is fixed by a hanging metal fitting suspended from the outer shell of the indoor unit, and the hanging metal fitting is fixed in the same direction as the direction of the wind flow from the fan. Since there is no resistance and the flow is not disturbed, no abnormal noise is generated and no decrease in air volume is observed.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a ceiling-mounted air conditioner according to an embodiment of the present invention, and Figure 2 is the same as that of Figure 1.
3 is an enlarged perspective view of a hanging fitting, FIG. 4 is a cross-sectional view of a conventional ceiling-embedded air conditioner, and FIG. 5 is a sectional view taken along line BB of FIG. 4. 1...outer shell, 2...heat exchanger, 3...fan,
4...Fan motor, 5...Water tray, 6...Indoor unit, 13...Hanging fittings.

Claims (1)

[Scope of utility model registration request] A hole is made in the ceiling, an indoor unit is embedded in the hole, a fan, a fan motor, a heat exchanger, and a water tray are provided inside the indoor unit, and the water tray is suspended from the outer shell of the indoor unit. The ceiling-embedded air conditioner is fixed with a metal fitting, and the hanging metal fitting is fixed at an angle in the direction of the flow of air from the fan.