JP3083334B2 - Air cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier having a function of indicating a cleaning or replacement time of a filter according to the present invention.

[0002]

2. Description of the Related Art In recent years, in order to maintain the performance of an air purifier, it has been required to accurately inform a user of an appropriate cleaning or replacement time of a filter.

Heretofore, this type of air purifier generally has the following configuration. Hereinafter, the configuration will be described with reference to FIGS. 4 and 5.

[0004] As shown in the figure, a blower 102 having a fan in a main body 101 of an air purifier having a vent, and a washing or disposable filter 103 and a dirt of air are provided in an air passage of the blower 102. The main body 101 has a manual filter discriminating switch 105 for switching a unique reference value according to the type of filter. The control unit 106
A calculation unit 107 that calculates a filter fouling coefficient by performing a calculation from the data on the degree of air fouling detected by the gas sensor 104, the air volume of the blower unit 102, and the operation time;
The non-volatile data storage unit 108 that accumulates and stores the filter dirt coefficient and the value that is accumulated and stored in the non-volatile data storage unit 108 are stored in the manual filter determination switch 10.
A display unit 109 is provided for displaying the value when the value exceeds the unique reference value of the filter 103 selected by the user.

In the above configuration, a command is issued from the arithmetic unit 107 to start the operation of the blower unit 102 according to the degree of dirt of the air detected by the gas sensor 104, and the dirt in the air is removed by the filter 103 to purify the contaminated air. Clean. On the other hand, in the arithmetic unit 107, the gas sensor 104
The data on the degree of contamination of the air sent from the
The so-called filter dirt coefficient is calculated from the operation time of the air volume of the non-volatile data storage unit 10.
8 is cumulatively stored. The arithmetic unit 107 constantly monitors the value of the filter fouling coefficient accumulated in the non-volatile data storage unit 108, and this value is used as the filter 103 (cleaning filter or disposable filter) selected by the manual filter discriminating switch 105. ), The life of the filter 103 is determined to have expired, and is displayed on the display unit 109, whereby the filter 103 is displayed.
To notify the cleaning or replacement of

[0006]

In such a configuration of the conventional air purifier, the user has to switch the manual filter discriminating switch 105 in accordance with the type of the filter 103 actually mounted. At this time, if,
If an incorrect filter is selected, there is a problem of notifying an erroneous cleaning or replacement time such that a cleaning sign is given before the service life is reached or a replacement sign is not provided even when the service life is over.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an air purifier that notifies an accurate cleaning and replacement time according to a type of a filter without bothering a user.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a gas sensor for detecting dirt of air, a cleanable filter for purifying air, A disposable filter and an automatic filter discriminating switch for automatically discriminating the type of the filter are provided, and a filter dirt coefficient is calculated by calculating data on the degree of dirt of air detected by the gas sensor, the air volume of the blowing part, and the operation time. , A non-volatile data storage unit that cumulatively stores the filter dirt coefficient calculated by the calculation unit, and a value that is cumulatively stored in the non-volatile data storage unit is determined by the automatic filter determination switch. The configuration is provided with a display unit that displays when the value exceeds the specific reference value of each filter.

[0009]

According to the air purifier of the present invention having the above-described configuration, the air purifier calculates from the data on the degree of contamination of the air sent from the gas sensor, the air volume of the air blower, and the operation time. When the value accumulated in the nonvolatile data storage unit exceeds the unique reference value of the filter selected by the automatic filter discriminating switch, the arithmetic unit determines that the filter has reached the end of its life and displays it on the display unit.

[0010]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG.

As shown in FIG. 1, a main body 1 of an air purifier having a vent is provided with a blower 2 having a fan,
Washable or disposable filter 3 and gas sensor 4 for detecting air contamination in the air flow path
And an automatic filter discriminating switch 5 for switching a unique reference value according to the type of the filter 3.
The calculation unit 7 calculates the filter dirt coefficient by calculating the data of the degree of dirt of the air detected by the gas sensor 4, the air volume of the blowing unit 2 and the operation time, and accumulates and stores the filter dirt coefficient. Non-volatile data storage unit 8
And the value accumulated and stored in the nonvolatile data storage unit 8 is
A display unit 9 is provided for displaying the life of the filter 3 when it exceeds a specific reference value of the filter 3 selected by the automatic filter discriminating switch 5.

In the above configuration, when the filter 3 is set on the main body 1 of the air purifier, the automatic filter discriminating switch 5 is turned on due to the difference in the shape of the filter 3, and a unique reference value for each filter is input. FIGS. 1 and 2 show different filters (washing filter and disposable filter) set, respectively.
In this state, depending on the degree of dirt of the air detected by the gas sensor 4, a command is issued from the arithmetic unit 7 and the blower unit 2 starts operating, the dirt in the air is removed by the filter 3, and the contaminated air is purified and cleaned. Become. On the other hand, in the arithmetic unit 7,
A calculation is performed from the data on the degree of contamination of the air sent from the gas sensor 4 and the air volume and the operation time of the blower unit 2 to calculate a so-called filter contamination coefficient, and this value is cumulatively stored in the nonvolatile data storage unit 8. The arithmetic unit 7 constantly monitors the value of the filter dirt coefficient accumulated in the non-volatile data storage unit 8, and this value is stored in the filter 3 (cleaning type filter or disposable type filter) selected by the automatic filter discriminating switch 5. If the filter 3 exceeds the specific reference value, it is determined that the life of the filter 3 has expired, and the display or the display 9 indicates that the filter 3 has been cleaned or replaced.

As described above, according to the air purifier of the embodiment of the present invention, the unique reference value corresponding to the type of the filter can be automatically determined.

[0014]

As is clear from the above embodiments, according to the present invention, the filter contamination coefficient is calculated from the degree of contamination detected by the gas sensor, the air volume and the operation time, and this value is determined according to the type of filter. Since the display is made when the value exceeds the specific reference value, the user does not have to bother to change the specific reference value of the filter due to the difference between the filters used. In addition, due to misinformation caused by incorrectly entering the type of filter, the filter will not be washed out before the end of its life, or will not be used without replacing the filter even after the end of its life. It is possible to provide an air purifier that can be sufficiently used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an air purifier according to an embodiment of the present invention.

FIG. 2 is a sectional view of an air cleaner according to another embodiment.

FIG. 3 is a control circuit diagram of the air purifier according to one embodiment of the present invention.

FIG. 4 is a sectional view of a conventional air purifier.

FIG. 5 is a control circuit diagram of a conventional air purifier.

[Explanation of symbols]

 2 blower unit 3 filter 4 gas sensor 5 automatic filter discrimination switch 7 operation unit 8 nonvolatile data storage unit 9 display unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 46/00-46/54 B01D 53/30 F24F 7/007

Claims (1)

(57) [Claims] 1. A gas sensor for detecting air contamination, a washable filter or a disposable filter for purifying air, and an automatic discriminator for automatically discriminating the type of the filter in an air flow path of a blower. A filter discriminating switch, a calculation unit for calculating a filter contamination coefficient by calculating from the data of the degree of contamination of the air detected by the gas sensor, the air volume of the blower unit, and the operation time; and a filter contamination coefficient calculated by the calculation unit. A nonvolatile data storage unit for cumulatively storing coefficients, and a display unit for displaying when a value cumulatively stored in the nonvolatile data storage unit is equal to or more than a unique reference value of each filter determined by the automatic filter determination switch. Air purifier.