JPH0455637A - Indoor unit for air conditioner - Google Patents

Abstract

PURPOSE:To prevent entering of dust and to retain performance for a long time by a method wherein a movable member which descends forward of a reed switch is provided and a projection which makes the descending movable member ascend is provided at a lower part of an air filter. CONSTITUTION:When an air filter 5 is removed, as a movable member 11 comes down forward of a reed switch 7, a suction grill 4 cannot be closed completely without the air filter 5, and further as the movable member 11 prohibits an approach of the reed switch 7 and a magnet 6 on a lower and rear part of the suction grill 4, the reed switch 7 cannot be turned ON. This informs that the air filter 5 is not mounted. When the air filter 5 is mounted, the movable member 11 which is now in front of the reed switch 7 is made to ascend by a projection 13 provided at a lower part of the air filter 5. After mounting the air filter 5, the suction grill 4 can be closed in a usual state, and therefore, the reed switch 7 can be turned ON.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an indoor unit of an air conditioner, and more particularly to a means for preventing forgetting to attach an air filter to a front panel.

[Conventional technology]

An example of an indoor unit of an air conditioner is shown in a longitudinal side view as shown in FIG.

In the case of this indoor unit 21, the exterior includes a housing 22 and this housing 2.
2, and a suction grill 24 that is attached to the front upper part of the front panel 23 so as to be openable and closable. An air filter 25 is attached to and detached from the front panel 23 behind the suction grill 24. The front panel 23 is freely provided and is located near the bottom of the air filter 25.
A reed switch 27 that is turned ON when a magnet 26 provided at the rear of the lower part of the suction grille 24 approaches is fixed to the reed switch 27, and an air purifier 28 and an indoor heat exchanger 29 are installed at the rear of the air filter 25. are arranged in this order, and the indoor air that has passed through the suction grill 24 and the air filter 25 is purified by the air cleaner 28 and then heat exchanged by the indoor heat exchanger 29, and the air after heat exchange is passed through the fan. 30 to send it into the room.

(Problem to be Solved by the Invention) By the way, the above-mentioned indoor unit does not have a means for specifically detecting the presence or absence of an air filter, and as long as the suction grill is closed, the magnet at the bottom of the suction grill will be close to the reed switch on the panel side. Then, by turning on the reed switch, the indoor unit is ready for operation, and if the air filter is removed for cleaning, or if you forget to put it on after cleaning, or even if you know it is not installed, you can operate it. There is a risk that it will start.

In such a case, the dust in the air sucked into the cabin will adhere to the air purifier and indoor heat exchanger, reducing their performance, and if operation continues without an air filter, the As a result, dust accumulates more quickly, causing problems such as the need to clean the air purifier earlier.

Therefore, the present invention solves these problems and includes a means for detecting forgetting to install an air filter.1. The purpose is to provide an indoor unit for an air conditioner that cannot be operated without an air filter.

[Means to solve the problem]

The present invention has been made to solve the above problems, and includes a suction grill attached to the front baffle so as to be openable and closable, and a suction grill located behind the suction grill and detachably attached to the front panel. An indoor unit of an air conditioner comprising an air filter and a reed switch that is fixed to the front panel near the bottom of the air filter and turns on when a magnet provided at the bottom rear of the suction grill approaches, The front panel is provided with a movable body that descends in front of the reed switch when the air filter is removed, and the movable body that descends when the air filter is attached to the lower part of the air filter. A protrusion was provided to allow it to rise.

[Function] With the above configuration, when the air filter is removed,
Movable body - Because it descends in front of the air filter, the suction grill cannot be completely closed with the air filter removed, and the movable body may come close to the reed switch and the magnet located at the bottom rear of the suction grill. This prevents the reed switch from turning on, allowing you to know if you have forgotten to install the air filter. The movable body that is descending forward can be raised, and after installing the air filter, the suction grill can be closed to its original state, so the reed switch can be turned on.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 is a perspective view of the indoor unit 1, in which 2 is a housing, 3 is a front panel attached to the front of the housing 2, and 4 is a suction grill attached to the front upper part of the front panel 3 so as to be openable and closable.

FIG. 2 is a longitudinal side view of the indoor unit 1, showing the suction grill 4 in an open state. Behind the suction grill 4, an air filter 5 is removably provided. When the magnet 6 provided at the rear of the lower part of the suction grill 4 approaches the front panel 3 in the vicinity, an O
A reed switch 7 is arranged.

Further, an air purifier 8 is disposed in the upper part of the machine in a gap between the air filter 5 and the indoor heat exchanger 9, and the indoor air that has passed through the suction grill 4 and the upper part of the air filter 5 is After being purified by the cleaner 8, the indoor air that has passed through the lower part is directly heat exchanged by the indoor heat exchanger 9, and the air after heat exchange is sent indoors by the fan 1o. .

By the way, at the front of the upper part of the reed switch 7, there is a third
A movable body 11 as shown enlarged in the figures and FIG. 4 is provided so as to be movable up and down.

Most of the movable body 11 except for its bottom part is accommodated in a gap 12 normally formed on the front side of the front panel 3, and is designed to descend when the air filter 5 is removed.

On the other hand, a protrusion 13 is provided at the lower end of the air filter 5 for raising the movable body 11 when the air filter 5 is installed at a predetermined position on the front barrel 3.

With the above configuration, when the air filter 5 is removed,
As the movable body 11 descends in front of the reed switch 7 as shown in FIG. Turn on the reed switch 7 to prevent it from approaching the magnet 6 provided at the rear of the lower part.
I can't let you.

Therefore, it is possible to know if the air filter 5 has been forgotten to be installed, and when the air filter 5 is installed, the movable air filter that is lowered in front of the reed switch 7 by the protrusion 13 provided at the bottom of the air filter 5 is used. The body 11 can be raised 1. After the air filter 5 is installed, the suction grill 4 can be closed to its original state, so the reed switch 7 can be turned on.

As mentioned above, the shape of the movable body 11 and the cavity 12 that accommodates the movable body 11 in a vertically movable manner is not limited to that shown in the drawings, and as described above, the shape of the air filter 5
The reed switch 7 moves up and down in front of the reed switch 7 as the air filter 5 is attached and detached.
It is sufficient if the structure is not ONL.

〔Effect of the invention〕

As explained above, if the indoor unit is equipped with a movable body, the reed switch cannot be turned on unless an air filter is attached, so it cannot be operated without an air filter, and as a result, the inside of the machine - ＼Indoor air taken in always passes through an air filter, which prevents dust from entering, so it does not pollute the cabin air cleaner and allows it to operate for a long period of time without deteriorating its performance. It is possible and convenient.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an indoor unit showing one embodiment of the present invention;
The figure is a vertical side view of the indoor unit, FIGS. 3 and 4 are enlarged views 1 of essential parts of the indoor unit, and FIG. 5 is a vertical side view of the indoor unit showing a conventional example. In the figure, 1 - indoor unit, 2 - one housing, 3 - front panel,
4 - Suction grill, 5 - Air filter 6 - Magnet, 7 - Reed switch, 8 - Air cleaner, 9 Indoor heat exchanger, 10 = - Fan, 11 - ~ Movable body, 12 Gap part,
13-=-protrusion. Figure 1 Patent applicant Fujitsu General Ltd. Figure 2

Claims (1)

[Claims] A suction grill attached to the front panel so as to be openable and closable; an air filter located behind the suction grill and removably attached to the front panel; and an air filter fixed to the front panel near the bottom of the air filter. In the indoor unit of the air conditioner, the air conditioner is equipped with a reed switch that is turned ON when a magnet is placed near the lower part of the suction grille, and when the air filter is removed, the reed switch is turned on when the air filter is removed. An air conditioner characterized in that a movable body that descends forward is provided, and a protrusion is provided at the bottom of the air filter for raising the movable body that is descending when the air filter is attached. Indoor unit of the machine.