JP2516801Y2 - Air conditioner - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention can be embedded in the ceiling,
The present invention relates to an air conditioner installed by suspending it from the ceiling.

[0002]

2. Description of the Related Art An example of a conventional ceiling-embedded air conditioner is shown in FIG.

A heat exchanger 7, a drain pan 10, a blower 6, a motor 5, a baffle plate 12 and the like are arranged inside a unit main body 2 buried in a ceiling 1. The unit main body 2 has a lower opening. A ceiling panel 8 for covering is attached detachably. A suction port 3 is formed in the central portion of the ceiling panel 8, and blowout ports 4 are formed on both sides of the suction port 3. A suction grill 11 is fitted in the suction port 3, and a filter 13 is detachably locked behind the suction grill 11.

When the blower 6 is driven by the motor 5,
The indoor air in the room 9 is sucked into the grill 11 from the suction port 3.
Then, it is guided by the baffle plate 11 through the filter 13 and sucked by the blower 6 to be energized. Next, in the process of passing through the heat exchanger 7, the air is cooled or heated to become conditioned air, which is blown into the chamber 9 through the blowout port 4.

[0005]

If the operation of the ceiling-embedded air conditioner is continued for a long time, the filter 1
Since 3 is clogged with dust trapped in it,
Not only does the ventilation resistance increase, but the capacity of the air conditioner decreases. Therefore, every time the filter 13 is clogged or every time a preset operation time elapses, the worker steps on the stepladder to remove the ceiling panel 8 or the filter 13 to wash the filter 13 or replace it with a new filter. Was.

Therefore, not only a great deal of labor and time are required for cleaning and replacing the filter 13, but also because the ceiling panel 8 and the filter 11 are large and heavy, this attachment / detachment work is a high place work on a stepladder, which is dangerous. However, there is a problem in that much labor is required.

The present invention is intended to solve the above problems of the conventional air conditioner.

[0008]

According to the present invention, a unit body having a built-in heat exchanger, a blower or the like is embedded in the ceiling or hung from the ceiling, and a ceiling panel or a filter is built in a lower portion of the unit body. In the air conditioner in which the suction grill is detachably attached, a rotary drum that is driven to rotate in the forward and reverse directions by a motor is provided in the unit body or the ceiling panel, and the other end of the wire whose one end is wound around the drum is connected to the rotary drum. It is connected to the ceiling panel or the suction grill, and is stopped when the motor is driven for a predetermined time or when the rotary drum rotates a predetermined number of rotations.

[0009]

Since the present invention has the above-mentioned structure, the wire is wound around or rewound from the rotary drum by rotating the rotary drum in the forward and reverse directions by the motor, and accordingly, the ceiling panel or the filter is removed. The built-in suction grill moves up and down.

Further, when the ceiling panel or the suction grill incorporating the filter is lowered, the motor is stopped when the motor is driven for a predetermined time or when the rotary drum rotates a predetermined number of revolutions, whereby the ceiling panel or the suction panel is sucked. The grill is automatically stopped at the predetermined descent position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. This embodiment relates to an air conditioner embedded in a ceiling similar to the conventional air conditioner shown in FIG. 5, and the same parts are designated by the same reference numerals and the description thereof will be omitted.

On the lower surface of the top plate 2a of the unit body 2, a rotary drum 21 which is driven to rotate in the forward and reverse directions by a motor 20 is attached. The rotary drum 21 is connected to a worm gear 33 that meshes with a worm 32 connected to the motor 20. A DC motor, for example, is used as the motor 20, and positive or negative rotation of the electric current supplied to the motor 20 is performed by a relay or a switch to rotate the motor 20 forward or backward, and the rotating drum 21 rotates forward via the worm 32 and the worm gear 33. Or, it is designed to rotate in the reverse direction. One end of a plurality of wires 22 is wound around the rotary drum 21, and the ceiling panel 8 is connected to the other end of the wires 22. It is desirable to use at least three wires 22. These wires 22 are guided to the outer peripheral edge of the ceiling panel 8 via a plurality of guide rollers 23 mounted in the unit body 2.

In this embodiment, when the motor 20 is rotated in the reverse direction,
The rotary drum 21 is reversely rotated through the worm 32 and the worm gear 33, the wire 22 is rewound from the rotary drum 21, and the ceiling panel 8 descends while being horizontal. Then, when an appropriate height on the floor is reached, the motor 20 is stopped, and the operator on the floor removes the filter 13 from the ceiling panel 8.
Remove and wash it. When the cleaning is completed, the filter 13 is attached to the ceiling panel 8 again, and the rotating drum 21 winds the wire 22 by rotating the motor 20 in the normal direction. Then, when the ceiling panel 8 rises and comes into contact with the lower surface of the unit body 2, the motor 20 is stopped.

The electric control circuit of the motor 20 in this embodiment is shown in FIG. That is, a normally open contact 41a of a relay 41, a resetting start switch 40 of the motor 20, and a time limit contact 42a of a timer 42, which will be described later, are connected in parallel to one pole of the power source. The time delay contact 42a of the timer 42 and the relay 44 are connected in series and are connected to the other pole of the power supply. Normally open contact 41 of the relay 41
The normally open contact 44a of the relay 44 and the normally closed contact 44b of the relay 44 are connected in parallel to a, and the normally open contact 44a and the lamp 45 are connected in series to the other pole of the power supply. The starting switch 40 and the normally-closed contact 44b of the relay 44 are connected to each other by an electric wire 46.
6 and the other pole of the power source, a motor 20 and a relay 41.
And the timer 42 are connected in parallel.

In the electric control circuit of the motor 20 of the present embodiment having the above configuration, the start switch 40 of the motor 20
When the relay is turned on, the relay 41 is excited, and the relay 41
The normally open contact 41a is turned on to drive the motor 20, and the timer 42 starts counting. Timer 42
Counts up, the time contact 42a of the timer 42
Is turned on, the relay 44 is excited, the normally closed contact 44b connected in series with the motor 20 is turned off, the motor 20 is automatically stopped, and the normally open contact 44a is turned on and the lamp 45 is turned on. The fact that the ceiling panel 8 has been lowered is notified.

When returning the lowered ceiling panel 8 to the unit main body 2, the motor 20 is rotated in the forward direction to rotate the wire 22.
The ceiling panel 8 is raised via the. At this time, the ceiling panel 8 is raised by the lowered distance by the electric control circuit shown in FIG. 3, and the ceiling panel 8 is returned to a predetermined position in the unit body 2.

Therefore, in this embodiment, the motor 20 is automatically stopped when the lowering of the ceiling panel 8 is completed.
The troublesomeness of visually observing the lowered state and stopping the motor 20 is eliminated. Further, by selecting the set time of the timer 42 and the like and appropriately changing the driving time of the motor 20, the descending height of the ceiling panel 8 is freely changed according to the height of the ceiling 1 in which the air conditioner is installed. be able to.

In this embodiment, the descent position is adjusted by the drive time of the motor 20, but the rotation speed of the rotary drum 21 is detected and the motor 20 is stopped when this rotation speed reaches a predetermined value. A second embodiment of the present invention which can be adapted to the above will be described with reference to FIG. The present embodiment is different from the first embodiment in the following points. A rotary drum 21 is fixed to the ceiling panel 8, and the rotary drum 2
The wire 22 whose one end is wound around 1 is connected to the suction grill 11 at the other end. That is, in the present embodiment, the rotary drum 21 is fixed to and integrated with the ceiling panel 8 having a fixed positional relationship with the suction grill 11.

In this embodiment, instead of the ceiling panel in the first embodiment, the suction grill 11 moves up and down by the rotation of the motor 20, and the electric control circuit shown in FIG. 3 controls the suction grill. When 11 is lowered to a predetermined height, the suction grill 11 can be stopped from falling and the lamp 45 can be turned on.

Further, in the air conditioner, the position of the ceiling panel 8 is adjusted so as to match the joint of the ceiling 1 in terms of aesthetics.
The ceiling panel 8 may be attached to the unit main body 2 at a position different from the regular attachment position, but even in such a case, the suction grill 11 is moved by driving the rotating drum 21 via the wire 22. When lifted, the suction grille 11 has a suction port 3 formed in the ceiling panel 8.
Will reach the regular position of.

[0021]

According to the present invention, by rotating the rotating drum forward and backward by the motor, the ceiling panel or the suction grill with the built-in filter moves up and down. As a result, the number and time of attaching and detaching the filter are reduced, and the attaching and detaching work is easy and safe.

Further, when the ceiling panel or the suction grill is lowered, the motor is stopped when the motor is driven for a predetermined time or when the rotating drum rotates a predetermined number of revolutions, and the ceiling panel or the suction grill is automatically specified. Since it can be stopped at the descent position, it is not necessary for the operator to stop the motor while watching the descent state from beginning to end.
The descent position can be freely changed according to the height of the ceiling where the air conditioner is installed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a side view of a main part of the embodiment.

FIG. 3 is an electrical control circuit diagram of the embodiment.

FIG. 4 is a longitudinal sectional view of an essential part of an air conditioner according to a second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing a conventional air conditioner.

[Explanation of symbols]

 1 Ceiling 2 Unit Body 6 Blower 7 Heat Exchanger 8 Ceiling Panel 11 Suction Grille 13 Filter 20 Motor 21 Rotating Drum 22 Wire

Claims (1)

(57) [Scope of utility model registration request] 1. A unit body having a built-in heat exchanger, a blower, etc. is embedded in the ceiling or hung from the ceiling, and a ceiling panel or a suction grill incorporating a filter is detachably attached to the lower part of the unit body. In the air conditioner configured as described above, a rotating drum that is driven to rotate in the forward and reverse directions by a motor is provided in the unit body or the ceiling panel, and the other end of the wire whose one end is wound around the drum is connected to the ceiling panel or the suction grill. Then, the air conditioner is configured to stop the motor when the motor is driven for a predetermined time or when the rotary drum rotates a predetermined number of rotations.