JPS6316649B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a ceiling-mounted air conditioning unit that is installed on the ceiling of a room.

(b) Prior art In general, ceiling-mounted air conditioning units cannot support the weight of the unit itself with the ceiling board.
For example, as shown in Japanese Utility Model Application Publication No. 53-76668, a hanging device is fixed to a ceiling beam above the ceiling, and the unit is hung by hooking it to the hanging device. Normal. However, during this installation work, the ceiling board had to be cut out in order to secure the hanging fixture to the ceiling joist, and the cut-out ceiling hole had to be covered with a new ceiling board that the hanging fixture would pass through to look good. was complicated and hot. Moreover, since the unit body is hooked to the hanging tool below the ceiling, a gap is created between the unit body and the ceiling plate, and the unit body is lowered by this gap than the ceiling plate, giving a feeling of pressure. had.

(c) Object of the Invention The object of the present invention is to provide an installation device that allows a ceiling-suspended air conditioning unit to be installed with a simple operation and with a good appearance while eliminating the feeling of pressure.

(d) Structure of the Invention The present invention includes a hanging tool that is fixed to a ceiling beam and protrudes downward from a ceiling hole, and a hanging tool that penetrates into the main body from the top plate and is attached to the hanging tool inside the main body. By installing a ceiling-suspended air conditioning unit by connecting the entire periphery of the top plate to the lower surface around the ceiling hole, the unit body is brought into close contact with the ceiling plate, and the ceiling space and indoor space are It is designed to seal with.

(E) Embodiments An embodiment of the present invention will be described based on the drawings.
Figure 1 is a perspective view of the ceiling-mounted air conditioning unit before installation, Figure 2 is a front view of the ceiling-mounted air-conditioning unit as it is installed, and Figure 3 is a cross-sectional view of the ceiling-mounted air-conditioning unit. Figure 4 is the figure 3 -'
This is a vertical cross-sectional view showing the installed state of the ceiling-suspended air conditioning unit cut along a line, in which the entire circumference of the lower half 2 of the unit main body 1 is projected outward and is connected to the front side 3 and both sides 4 and 5. An upper half 9 in the unit main body 1 that is provided with ventilation holes 6, 7, and 8 and communicates with the ventilation holes.
A U-shaped heat exchanger 10 and a centrifugal blower 11 are built in, spanning the space between the upper and lower half parts 2. Therefore, in particular, as the heat exchanger 10, a heat exchanger with needle fins having high heat exchange efficiency, in which needle fins are wrapped around a heat exchange pipe, is used, and a sufficient air volume is provided for this heat exchanger with high ventilation resistance. As shown in the figure, a turbo fan that can obtain extremely high static pressure at the blade outlet is used as the centrifugal blower 11, and the air flow is sucked in through a ventilation grill 13 that is detachably provided on the bottom plate 12 of the unit body 1. After that, the centrifugal blower 11 blows out the air as shown by the solid arrow in FIG.
Air is blown out from 7 and 8 to the front and both sides.

14 has two chambers 15 and 16 in the front and rear of the unit body 1.
The scroll plate of the fan casing 19 is integrally formed with the partition plates 17 and 18 that divide the fan casing, 20 is the top plate of the unit main body 1 which also serves as the upper wall of the fan casing 19, and 21 is the nozzle of the fan casing 19 having the suction port 22. A plate 23 is the motor of the centrifugal blower 11 fixed to this nozzle plate via legs 24, 25 is a drain pan for receiving the drain generated in the heat exchanger 10, and 26 and 27 are attached to the inner wall of the unit body 1 for ventilation. Insulating materials 28, 29, and 30 are used to prevent dew condensation around the openings 6, 7, and 8, and air direction change plates 28, 29, and 30 are installed at the vents 6, 7, and 8, and change the blowing air horizontally and diagonally downward. be.

Reference numeral 31 indicates a heat insulating material affixed to the upper surface 32 of the outer wall of the top plate 20; reference numerals 33, 34, 35, and 36 indicate mounting holes drilled through the top plate 20 and the heat insulating material 31; 37, 3;
8, 39, 40 are hanging tools inserted into these mounting holes and tightened with nuts 41, 42, 43, 44; 45, 46 are nuts 41, 42, 4;
This is a service opening/closing lid detachably provided on the nozzle plate 21 in order to perform the tightening operations 3 and 44 inside the unit body 1.

The installation work of the ceiling-mounted air conditioning unit, which is constructed as described above, will now be explained. First, as shown in Fig. 1, a ceiling hole 48 that is somewhat smaller than the external dimensions of the upper half 9 is cut out at the location of the ceiling plate 47 where the unit main body 1 will be installed, and then the worker can place himself or herself through this ceiling hole 48. Get in and hang the hanging tools 37, 38, 39,
40 is fixed to the ceiling beam 49. After that, lift up the unit body 1 from below with the ventilation grill 13 and service lids 45 and 46 removed, and insert it into the mounting hole 3.
3, 34, 35, 36 with hanging tools 37, 38,
39 and 40, the entire peripheral edge 5 of the top plate 20
0 is connected to the lower surface 51 around the ceiling hole 48 via the heat insulating material 31, the nuts 41, 42, 43,
44 to the hanging tools 37, 38, 39, 40, tighten the nuts 41, 4 until the heat insulating material 31 is compressed.
Tighten nuts 2, 43, and 44 and use these nuts to adjust the unit body 1 to be horizontal.
As shown in FIGS. 2 and 4, the unit main body 1 is installed in a state where the space 52 above the ceiling plate 47 and the indoor space 53 are completely sealed. Then, the installation work is completed by attaching the service opening/closing lids 45, 46 and the ventilation grill 13. During this installation, it is necessary to lead out the refrigerant pipe 54 connected to the heat exchanger 10 and the drain pipe 55 connected to the drain pan 25 to the rear from the rear chamber 16 of the unit main body 1 as shown in Fig. 3. but,
If the back plate 56 of the unit main body 1 is installed in contact with the indoor wall 57 as shown in FIG.
The refrigerant piping 54 and the drain pipe 55 can be led out directly from the back plate 56 into the indoor wall 57, and the refrigerant piping 54 and the drain pipe 55 will not be visible below the ceiling plate 47 and spoil the aesthetic appearance.

Furthermore, since the upper surface 32 of the outer wall of the top plate 20 that closes the ceiling hole 48 is covered with a heat insulating material 31, the high temperature and humid air in the space 52 is transferred to the top plate 20 during cooling operation in summer.
Condensation does not occur due to direct contact with the air, and since the hanging tools 37, 38, 39, and 40 are located in the primary passage before the indoor air is heat exchanged with the heat exchanger 10, During the cooling operation in summer, there is no possibility of condensation on the hanging tools 37, 38, 39, and 40 due to cooling.

(F) Effects of the Invention According to the present invention, the ceiling hole can be left cut out, and since the ceiling hole is hidden by the entire periphery of the top plate of the unit body, there is no need to repair the area around the ceiling hole. The joint seal between the top plate and the ceiling plate prevents air from leaking from the ceiling space into the indoor space and causing condensation around the ceiling hole, and the installation can be done with simple work and looks good.

Furthermore, since the unit main body is installed in close contact with the ceiling board, there is no feeling of pressure, and since the top plate of the unit main body supports the area around the ceiling hole, it is possible to prevent the ceiling board from sagging due to insufficient strength.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a ceiling-suspended air conditioning unit before installation, FIG. 2 is a front view of the ceiling-suspended air conditioning unit as it is installed, and FIG. 3 is a cross-sectional view of the ceiling-suspended air conditioning unit, and FIG. 4 is a longitudinal sectional view taken along the line -' in FIG. 3, showing the installed state of the ceiling-suspended air conditioning unit. 1... Unit body, 20... Top plate, 37, 38,
39, 40...Hanging tool, 48...Ceiling hole, 49...
Ceiling beam, 50... Entire periphery of the top plate, 51... Lower surface around the ceiling hole.

Claims (1)

[Claims] 1 A unit body comprising a hanging fixture fixed to the ceiling and protruding downward from a ceiling hole, and a unit main body in which the hanging fixture penetrates inside the main body from the top plate and is attached to the hanging fixture inside the body, and the hanging fixture is attached to the ceiling. An installation device for a ceiling-mounted air conditioning unit, characterized in that a plate is joined to the lower surface around a ceiling hole.