JPH08837U - Ceiling embedded air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] Easy cleaning or replacement of the air filter 13,
Be able to do it quickly and safely. [Structure] An air filter in which a rotary drum 21 provided in a unit main body 2 is normally and reversely rotated by a motor 20 and a wire 22 having one end wound around the rotary drum 21 is wound or unwound to be connected to the other end. 13 or the ceiling panel 8 to which this is attached is moved up and down. A limit switch 35 is installed near the feeding position of the rotary drum 21, and when the limit switch 35 is engaged with the wire 22 moved along with the feeding completion, the limit switch 35 causes the motor to move.
Stop 20

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ceiling-embedded air conditioner installed by being embedded in the ceiling.

[0002]

[Prior art]

 An example of a conventional ceiling-embedded air conditioner is shown in FIG. Inside the unit body 2 embedded in the ceiling 1, a heat exchanger 7, a drain pan 10, a blower 6, a motor 5, a wind guide plate 12 and the like are arranged, and the unit body 2 covers the lower opening thereof. The ceiling panel 8 is detachably attached.

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 an air filter 13 is detachably locked on the upper side of the suction grill.

When the blower 6 is driven by the motor 5, the indoor air in the chamber 9 passes through the suction grill 3 and the air filter 13 from the suction port 3, is guided by the baffle plate 12 and is sucked into the blower 6. Be urged. Then, 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 air outlet 4.

[0005]

[Problems to be solved by the device]

 When the cumulative operating time of the ceiling-embedded air conditioner becomes long, the air filter 13 is clogged with the dust trapped therein, the ventilation resistance increases, and the capacity of the air conditioner decreases.

Therefore, every time the air filter 13 is clogged or every time a preset cumulative operating time elapses, an operator rides on a stepladder to remove the ceiling panel 8 or the air filter 13, and then the air filter Since 13 was cleaned or replaced with a new air filter, there was a problem that cleaning and replacement of the air filter 13 requires a great deal of labor and time.

The ceiling panel 8 and the air filter 13 are large and heavy, and the work of attaching and detaching them is a work at a high place on the stepladder, which is dangerous and requires a lot of labor. There was a problem.

[0008]

[Means for Solving the Problems]

 The present invention has been proposed to solve the above-mentioned problems, and the gist of the first invention is to embed a unit main body having a built-in heat exchanger, blower, etc. in the ceiling. In a ceiling-embedded air conditioner in which a ceiling panel or an air filter is detachably attached to the lower part of the main body, a rotary drum that is driven to rotate forward and backward by a motor is provided in the unit main body, and one end of this rotary drum is installed. Is connected to the ceiling panel or the air filter at the other end, and the limit switch that engages with the wire that moves with the completion of feeding the wire and stops the motor is connected to the wire of the rotating drum. It is a ceiling-embedded air conditioner that is installed near the delivery position.

The gist of the second invention is that a unit body incorporating a heat exchanger, a blower, etc. is embedded in the ceiling, and a ceiling panel or an air filter is detachably attached to the lower part of the unit body. In the embedded ceiling type air conditioner, a rotating drum that is driven to rotate forward and backward by a motor is provided in the unit body, and one end of the wire wound around the rotating drum is attached to the ceiling panel or the air. A ceiling-embedded air conditioner characterized in that a hook is provided in the middle of the wire while being connected to a filter, and a limit switch that stops the motor when engaged with the hook is installed in the unit body. .

[0010]

In the present invention, when the rotating drum is driven to rotate in the forward and reverse directions by the motor, the wire is wound around the rotating drum or unwound from the rotating drum, and the ceiling panel or the air filter moves up and down accordingly.

Further, in the invention of claim 1, when the wire moves along with the completion of feeding, the limit switch engaging with the wire stops the motor.

Further, in the invention of claim 2, when the limit switch is engaged with the hook provided in the middle of the wire, the limit switch causes the motor to be stopped.

[0013]

【Example】

 A first embodiment of the present invention is shown in FIG. 1, where (A) is a longitudinal sectional view of an air conditioner and (B) is a schematic side view of a main part. As shown in FIG. 1 (A), one rotating drum 21 which is driven by a motor 20 to rotate forward and backward is attached to the lower surface of the top plate 2a of the unit body 2.

One ends of a plurality of wires 22 are wound around the rotary drum 21, and the other ends of the plurality of wires 22 are connected to a plurality of places of the ceiling panel 8. It is desirable to use at least three wires 22, and these wires 22 are fixed to a plurality of locations on the outer peripheral edge of the ceiling panel 8 via guide rollers 23 installed at appropriate locations on the unit body 2. desirable.

As shown in FIG. 1 (B), a limit switch for engaging the wire 22 that has moved with the completion of feeding the wire 22 and stopping the motor 20 near the wire feeding position of the rotary drum 21. 35 are installed.

When the motor 20 is reversely rotated, the rotary drum 21 is reversely rotated, the plural wires 22 are rewound from the rotary drum 21, and the ceiling panel 8 descends in a horizontal state. Then, when an appropriate height on the floor is reached, the motor 20 is stopped and an operator on the floor removes the air filter 13 from the ceiling panel 8 and cleans it or replaces it with a new air filter.

When the cleaning or replacement is completed, the air filter 13 is reattached to the ceiling panel 8, and the rotating drum 21 is rotated forward by rotating the motor 20 in the forward direction so that the rotating drum 21 has a plurality of wires 22. Are taken up at the same time. As a result, when the ceiling panel 8 rises in a horizontal state and reaches the lower surface of the unit body 2, the motor 20 is stopped, and if necessary, the motor 20 or the rotating drum 21 is locked to stop the rotation. Block.

When lowering the ceiling panel 8, the rotary drum 21 rotates in the direction of the arrow as shown in FIG. 1 (B), and the wire 22 is paid out from the lower side of the rotary drum 21 as shown by the solid line. Since one end of the wire 22 is fixed to the rotating drum 21, when the ceiling panel 8 descends and the feeding of the wire 22 is completed, the wire 22 is wound around the rotating drum 21 rotating in the arrow direction. As shown by the broken line, the motor 20 is stopped by moving it to the upper side of the rotary drum 21 and contacting and operating the limit switch 35.

Thus, the motor 20 is automatically stopped when the lowering of the ceiling panel 8 is completed, so that the trouble of stopping the motor 20 when the user descends to a predetermined height by visually observing the lowered state is eliminated.

FIG. 2 shows a second embodiment of the present invention. A hook 36 is provided in the middle of the wire 22 and a limit switch 37 that engages with the hook 36 and stops the motor 20 is installed in the unit body 2.

When the ceiling panel 8 is lowered to a predetermined height, the hook 36 engages with the limit switch 37 and the motor 20 automatically stops. By changing the attachment position of the hook 36 to the wire 22, the lowering height of the ceiling panel 8 can be freely changed.

Although a plurality of wires 22 are connected to the ceiling panel 8 in the above embodiment, they can be connected to a plurality of places of the air filter 13, and in this case, are fixed to the air filter 13 and this. Only the suction grill 11 etc. can be raised and lowered.

[0023]

[Effect of device]

 In the present invention, the unit main body is provided with a rotary drum that is driven to rotate forward and backward by a motor, and the other end of the wire whose one end is wound around the rotary drum is connected to the ceiling panel or the air filter. By rotating the rotating drum forward and backward, the air filter or ceiling panel can be raised and lowered. Therefore, the number and time of cleaning or replacing the air filter can be reduced, and these operations can be performed easily and safely. It will be possible.

In addition, since the limit switch that engages with the wire that has moved with the completion of feeding the wire and stops the motor is installed near the wire feeding position of the rotating drum, the ceiling panel or the air filter is automatically set to the predetermined position. Therefore, it is not necessary for the operator to stop the motor while observing the descent state all the time.

Also, since a hook is provided in the middle of the wire and a limit switch that stops the motor when engaged with the hook is installed in the unit main body, the ceiling panel or the air filter can be automatically stopped at a predetermined descent position. In addition, the lowering position of the ceiling panel or air filter can be easily changed by changing the attachment position of the hook to the wire.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, (A) is a longitudinal sectional view of an air conditioner, and (B) is a schematic side view of a main part.

FIG. 2 is a schematic side view of an essential part showing a second embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a conventional air conditioner.

[Explanation of symbols]

 1 Ceiling 2 Unit body 7 Heat exchanger 6 Blower 20 Motor 21 Rotating drum 22 Wire 8 Ceiling panel 13 Air filter 35 Limit switch

Claims (2)

[Scope of utility model registration request] 1. A ceiling-embedded air conditioner in which a unit body containing a heat exchanger, a blower, etc. is embedded in a ceiling, and a ceiling panel or an air filter is detachably attached to a lower portion of the unit body. The unit body is provided with a rotary drum which is driven to rotate forward and backward by a motor, and one end of the wire wound around the rotary drum is connected to the ceiling panel or the air filter at the other end, and the wire is fed out. A ceiling-embedded air conditioner characterized in that a limit switch that engages with the wire moved upon completion and stops the motor is installed near the wire feeding position of the rotary drum. 2. A ceiling-embedded air conditioner in which a unit body containing a heat exchanger, a blower, etc. is embedded in the ceiling, and a ceiling panel or an air filter is detachably attached to the lower part of the unit body. The unit body is provided with a rotating drum that is driven to rotate forward and backward by a motor, and one end of the wire wound around the rotating drum is connected to the ceiling panel or the air filter at the other end, while the wire is in the middle of the wire. A ceiling-embedded air conditioner characterized in that a hook is provided on the unit, and a limit switch for stopping the motor when engaged with the hook is installed on the unit body.