JPS63178814A - Air cleaner - Google Patents

Abstract

PURPOSE:To exactly discriminate the time for exchanging filter by projecting the light emitted from a light emitting element to a supporting frame of air filter, and discriminating the intensity of the reflex light reaching a light receiving element by a discriminating display part. CONSTITUTION:The light 5 emitted from the light emitting element 4 is reflected by the supporting frame, and reaches the light receiving element 6. The intensity of the light reaching the light receiving element 6 is discriminated by the discriminating display part 7. When the air filter is worm out, much dust is accumulated on the air filter 3 and the dust is also stuck on the supporting frame 2. In this state, the intensity of the reflex light is extremely reduced, which is discriminated by the discriminating display part 7. Thus, the dirtiness of the air filter is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air cleaner having an air filter dirt display function.

Some conventional air purifiers allow you to check how dirty the air filter is from the outside, making it easy to clean and replace the air filter. This type of air purifier generally has
The main body of the air purifier has two small windows, allowing a portion of the air filter to be seen directly from the outside.

Problems to be Solved by the Invention However, with such a conventional configuration, the air filter of an air purifier turns black relatively soon after it is used, but the actual dust collection efficiency depends on the fact that the air filter itself turns black. It had not decreased much at the time of
Since the air filter can still be used for a considerable period of time, it is difficult to judge when it is time to clean or replace it just by the color of the air filter itself.

The present invention is intended to solve these problems, and aims to accurately determine and display whether the air filter should be cleaned or replaced.

Means for Solving the Problem In order to solve this problem, the present invention irradiates light from a light emitting element to the support frame of the air filter, and uses a discrimination display section to determine the intensity of the reflected light that reaches the light receiving element. , the air filter is configured to display dirt on the air filter.

31.-; Function With this configuration, the air filter loses its ability to collect vehicles, and when dust accumulates on the support frame of the air filter, the reflected light that reaches the light receiving element becomes weak. By determining whether the reflected light has become weak on the discrimination display section and displaying the information, it is possible to accurately inform the user that it is time to clean or replace the air filter.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings. 1st
In the figure, an air filter 3 held by a support frame 2 is provided on the windward side of the blower 1. On the other hand, as shown in FIG. 2, the light 5 emitted from the light emitting element 4 is reflected by the support frame 2 and reaches the light receiving element 6. Further, the discrimination display unit 7 discriminates and displays the intensity of the light that has reached the light receiving element 6.

In the above configuration, while the air filter 3 is new, the air 8 generated by the blower 1 easily passes through the air filter 3, so dust is less likely to accumulate on the support frame 2, and the air 8 is The contained dust is collected by an air filter 3. In this case, since the amount of dust accumulated on the support frame 2 is extremely small, the intensity with which the light 5 emitted from the light emitting element 4 reaches the light receiving element 6 does not change much.

On the other hand, when the air filter 3 gets old, the air filter 3 accumulates a large amount of dust through dust collection, making it difficult for the wind 8 to pass through the air filter 3.
In addition to the air filter 3, the dust contained in the main unit 9
It adheres to the inside of the housing and the support frame 2, and easily accumulates. In this case, as dust accumulates on the support frame 2, the intensity of the light 5 emitted from the light emitting element 4 reaching the light receiving element 6 is significantly reduced. By determining and displaying the dirt on the discrimination display section 7, it is possible to notify that the air filter is dirty.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, by detecting the intensity of reflected light from the support frame of the air filter, it is possible to accurately determine and display the replacement of the five vanes of the air filter. Therefore, it is extremely effective in actual use.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an air cleaner according to an embodiment of the present invention, and FIG. 2 is a partial perspective view of the same air cleaner. 1...Blower section, 2...Support frame, 3...
...Air filter, 4...Light emitting element, 6
. . . Light receiving element, 7 . . . Discrimination display section.

Claims (1)

[Claims] Determine the air filter support frame that supports the air filter, a light emitting element that irradiates light to the support frame, a light receiving element that receives reflected light from the support frame, and the intensity of the reflected light that reaches the light receiving element. The air cleaner includes a discrimination display section that displays dirt on the air filter based on the intensity of reflected light from the light receiving element.