JPH05106859A - Indoor unit of air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] Make it easy to attach and detach the filter of the air conditioner. [Structure] Since the indoor unit of the air conditioner is located at a high place in the room, it is difficult to attach and detach the filters 8 and 9. Therefore, the indoor unit is provided with the filter device 6 that can be raised and lowered by remote control. The filter device 6 includes a motor that normally and reversely rotates according to a control signal from a control unit (microcomputer), a power transmission means 16 that transmits the power of the motor to the filters 8 and 9, and a lifting / lowering operation according to the operation of the power transmission means 16. Filter main bodies 8 and 9, a filter guide 17 that slidably holds the filter main bodies 8 and 9, and filter detection means that detects where the filter main bodies 8 and 9 are located in the filter guide 17. To do.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly to a filter device therefor.

[0002]

2. Description of the Related Art The housing of an indoor unit of an air conditioner is
It is composed of a main body and a front cover detachably attached to the main body. The front cover has a front air inlet for indoor air and a lower air outlet for heat-exchanged air. At least a filter device, a heat exchanger, and a blower are arranged in the air passage that connects the suction port and the air outlet. By the way, the filter of this filter device is clogged with dust in the air passing therethrough, so that the amount of air flowing toward the air outlet decreases, and the heat exchange performance of the heat exchanger deteriorates. Therefore, this filter is configured to be detachable, and is removed and washed as needed. There is also an indoor unit in which a display lamp or the like is turned on after a predetermined time (for example, one month) has passed to prompt cleaning of the filter.

[0003]

However, the indoor unit is generally installed in a position close to the ceiling, even if it is indoors. Due to the compressed dimensions of, the filter may not be accessible. As a result, it may be troublesome, neglect to clean the filter, operate with reduced heat exchange performance, and not be able to perform sufficient air conditioning and waste power. Further, even if the above-mentioned indicator lamp for prompting the cleaning of the filter is provided, since this indicator lamp is lit periodically so that the actual condition of the filter is not contaminated. There is also the drawback that they do not always match. Therefore, in the present invention, it is possible to solve these problems, and even if the indoor unit is installed at a high place that cannot be reached, if the filter is clogged, the filter can be easily attached and detached. It is an object of the present invention to provide an indoor unit of an air conditioner equipped with a filter device capable of performing the above.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a housing including a main body and a front cover detachably attached to the main body. In an indoor unit of an air conditioner in which a filter device, a heat exchanger, a blower, etc. are installed in the air passage of a housing, the filter device is a motor for driving a filter, and the power of the motor is on the filter side. Power transmission means for transmitting, a filter main body that moves up and down with the operation of the power transmission means, a filter guide that slidably holds the filter main body, filter detection means for detecting the presence or absence of the filter main body, The filter is constituted by a control unit for driving and controlling the motor, and the lifting and lowering of the filter body is remotely controlled.

[0005]

With the above construction, if the remote controller supports the raising and lowering (detachment) of the filter main body, the control unit causes the motor to rotate in the forward or reverse direction based on the operation signal from the remote controller. Then, the power is transmitted to the filter main body by the power transmission means, so that the filter main body descends or rises while being held by the filter guide. Therefore, if the filter body is lowered, even a person who cannot reach the lower part of the housing can remove the filter body.When mounting the filter body, insert the upper end of the filter body into the specified position and operate the remote control. It can be automatically raised and put back in its original position.

[0006]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the appearance of an indoor unit of an air conditioner. A casing 1 of the indoor unit includes a main body 2 formed for wall hanging, and a front cover 3 detachably attached to the main body 2. It consists of Front cover 3
Has a suction port 4 for indoor air on the front side thereof, and a blow-out port 5 for heat-exchanged air is formed in the lower part. A filter device (6) which will be described later is provided inside the suction port 4, and the filter device (6) is equipped with two filter bodies 8 and 9 that can be moved up and down by operating a remote controller 7. Further, on the right side of the outlet 5, there are arranged a light receiving section 10 for remote control signals, an alarm 11 for notifying the clogging of the filter bodies 8 and 9, and the like. Is provided.

FIG. 2 is a side view showing an outline of the inside of the housing 1 in which the filter bodies 8 and 9 are arranged, and the filter device 6 is provided in the air passage 12 connecting the suction port 4 and the air outlet 5. The heat exchanger 13, the blower 14 for sending the heat-exchanged air to the room, and the like are arranged at predetermined positions. The filter device 6 includes a motor 15 for driving the filter and the motor.
The power transmission means 16 for transmitting the power of 15 to the filter bodies 8 and 9 side, the filter bodies 8 and 9 which move up and down according to the operation of the power transmission means 16, and the filter bodies 8 and 9 are slidable. A filter guide 17 to be held and filter detection means 18 and 19 for detecting the presence or absence of the filter bodies 8 and 9.
And a control unit (not shown) that controls the drive of the motor 15 and informs the alarm device 11 of the clogging of the filter bodies 8 and 9, and raises and lowers the filter bodies 8 and 9. An instruction is given by operating the remote controller 7.

Explaining the components of the filter device 6 in a little more detail, the motor 15 is a low speed motor which is controlled by the controller in the forward and reverse directions, and its power is a power transmission means.
Transmitted to 16. As shown in FIG. 3, the power transmission means 16 is composed of a long rotary shaft 16a and a plurality of circular gears 16b fixed to a predetermined position of the rotary shaft 16a. Is rotatably supported. On the other hand, each of the filter bodies 8 and 9 is composed of a lattice-shaped frame portion 8a as shown in FIG. 4 and a net-shaped filter 8b welded to the frame portion 8a. A plane gear 8c corresponding to the circular gear 16b of the power transmission means 16 is formed.

The filter body 8 thus formed,
9 is usually a filter guide as shown in FIG.
It is slidably accommodated (held) in 17 and the circular gear 16b of the power transmission means 16 and the flat gear 8c on the filter main body 8 and 9 side are still in mesh with each other. By the way, the filter guide 17 is provided inside the rear of the front cover 3 either integrally or as a retrofit, and filter detecting means 18 and 19 for detecting the presence or absence of the filter bodies 8 and 9 are provided above and below, respectively. There is. In these devices, for example, a switch is used and a change in voltage generated by the on / off operation of the switch is input to the control unit.

Further, in this embodiment, the existing rotational speed detecting means (not shown) of the blower 14 is used as a means for indirectly detecting the clogging of the filter bodies 8 and 9. The blower 14 is provided with a Hall element or the like for controlling the rotation speed of the motor, and the detection signal thereof is input to the control unit. In the case of the present embodiment, the number of revolutions at the maximum air volume is about 1300 revolutions / minute, but if the filter bodies 8 and 9 become dirty and clogged, the air passage decreases, and depending on the degree, the blower
The air in the air passage 12 where 14 is arranged becomes lean,
Since the air resistance decreases, the rotation speed of the blower 14 increases. If the rotation speed is increased by, for example, 50 rotations / minute as compared with the rotation speed at the maximum air volume, it can be determined from this value that the filter bodies 8 and 9 are considerably soiled and clogged.

Therefore, the number of rotations of the blower 14 is detected by using the above-mentioned number of rotations detection means, and when the number of rotations exceeds a preset value, the control unit judges and the alarm 11 causes the filter bodies 8 and 9 to be detected. I am trying to inform you that is clogged. The method of this notification may be an alarm sound, a voice, a liquid crystal display, or a combination thereof. Although the configuration of the filter device 6 has been described above, when the clogging of the filter bodies 8 and 9 is notified by the alarm device 11, the filter bodies 8 and 9 can be lowered by operating the remote controller 7.

Although not shown in the figure, the remote controller 7 is provided with operation buttons for raising and lowering the filter bodies 8 and 9 in addition to the operation buttons for normally used cooling / heating switching, room temperature and air volume switching, and the like. ing. When this operation button is used to command the lowering of the filter bodies 8 and 9, a control unit (not shown) causes the motor 15 to rotate in the reverse direction. Then, the power is applied to the circular gear 16 provided on the rotary shaft 16a.
It is transmitted to the filter bodies 8 and 9 via b, and the filter bodies 8 and 9 start descending. Then, the switch 18 above the filter guide 17 is turned off, and the change in voltage is input to the control unit. When the control unit detects this voltage change, the control unit reduces the rotation speed of the motor of the blower 14 or controls the motor to stop.

The filter bodies 8 and 9 are further lowered,
When the upper end passes through the lower switch 19, the switch 19 is also turned off, and the voltage change is input to the control unit. When the controller detects this voltage change, it stops the operation of the motor 15. Therefore, both of the filter bodies 8 and 9 are stopped in a state of descending to the lower part of the housing 1. In such a state, it can be easily removed because it can be easily reached by human hands. Dust on the filter bodies 8 and 9 is removed by a vacuum cleaner, washing with water, etc., and the filter bodies 17 are dried and then mounted again on the filter guide 17. Insert and
When pushed up a little, the plane gears 8 on the filter bodies 8 and 9 side
c and the circular gear 16b on the side of the power transmission means 16 mesh with each other, and subsequently the switch 19 returns to the ON state.

Therefore, when the operation button of the remote controller 7 is operated to instruct the filter bodies 8 and 9 to be raised, the control section causes the motor 15 to rotate forward. Along with this, the filter body 8,
All of 9 go up, and the upper switch 18 also returns to the ON state. Then, the control unit detects this and detects that the motor 15
Control to stop the operation of. In this way, the filter bodies 8 and 9 are automatically housed in the frame body 17. When the filter bodies 8 and 9 are raised, the remote control operation as described above is omitted, and when the filter bodies 8 and 9 are inserted into the opening 17a and the switch 19 returns to the on state, that is done by the control unit. If the motor 15 is immediately rotated in the normal direction upon detection by, the motor 15 can be automatically raised without operating the remote controller.

[0015]

EFFECT OF THE INVENTION In the case of the indoor unit provided with the filter device as described above, the filter body can be lowered to the reach of the hand by the operation of the remote control, and conversely raised. And it can be easily installed, and the timing of cleaning the filter body is determined by the microcomputer of the control unit based on the number of rotations of the blower, and is notified by the alarm device.
Can be cleaned at the right time. Therefore, the required amount of air is always supplied to the heat exchanger, a predetermined heat exchange performance is maintained, and waste of electric power can be eliminated,
Contribute to energy saving.

[Brief description of drawings]

FIG. 1 is an external perspective view of an indoor unit of an air conditioner according to the present invention.

FIG. 2 is a side sectional view of a main part of an indoor unit according to the present invention.

FIG. 3 is a perspective view for explaining a main part of the filter device according to the present invention.

FIG. 4 is a perspective view of a filter body according to the present invention.

[Explanation of symbols]

 1 Case 2 Main Body 3 Front Cover 4 Suction Port 5 Air Outlet 6 Filter Device 7 Remote Control 8 Filter Main Body 9 Filter Main Body 10 Remote Control Signal Receiver 11 Alarm 12 Air Passage 13 Heat Exchanger 14 Blower 15 Motor for Driving Filter 16 Power transmission means 17 Filter guide 18 Filter detection means (switch) 19 Filter detection means (switch)

Claims (4)

[Claims] 1. An air system comprising a main body and a front cover detachably attached to the main body, and a filter device, a heat exchanger, a blower, etc. installed in an air passage of the main body. In the indoor unit of a harmony machine, the filter device, a motor for driving the filter, a power transmission means for transmitting the power of the motor to the filter side, and a filter body that moves up and down according to the operation of the power transmission means, A filter guide for slidably holding the filter body, a filter detecting means for detecting the presence or absence of the filter body, and a control section for driving and controlling the motor are used to remotely control the lifting and lowering of the filter body. An indoor unit unit for an air conditioner, which is characterized in that 2. The power transmission means comprises a rotary shaft rotatably supported and a plurality of circular gears provided on the rotary shaft, and a plane gear corresponding to the circular gear is formed on the filter body. The indoor unit of the air conditioner according to claim 1. 3. The number of revolutions of the blower is detected by a number of revolutions detecting means, and if the detected value exceeds a preset value, an alarm informs that the filter body is clogged. The outdoor unit of an air conditioner according to claim 1. 4. The motor is controlled so that the filter detecting means detects that the filter body has been inserted into the opening of the filter guide, and automatically raises the filter body. The indoor unit of the air conditioner according to 1.