JPS63137718A - Air cleaner - Google Patents

Abstract

PURPOSE:To accurately indicate the replacement period of a filter by freely selecting the degree of soiling of the filter and indicating a point of time when it has reached preset soiling. CONSTITUTION:An air cleaner is provided with a gas sensor 4 detecting the degree of contamination due to the gas incorporated in ambient air. Its detection signal is fed to a controlling means 11. Further both a motor fan 7 actuated according to preset value fed from the outer part and an operating means 3 for operating action of the apparatus are connected with the controlling means 11. The output of the gas sensor 4 is counted with a counting means 12 and the counted time is preset with a timer means 16. When the contents of the counting means 12 reach the prescribed value, the replacement of a filter is indicated with a displaying means 14. The prescribed value can be changed over with a changeover means 13, and the contents of the counting means 12 may be reset with a resetting means 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air cleaner having a display device that accurately indicates when to replace a filter.

2. Description of the Related Art Conventionally, the time to replace the filter in this type of air purifier has been determined by visually determining whether the filter is dirty or indicated by the amount of time the power supply has been energized.

Problems that the invention attempts to solve However, in order to check the degree of dirt on the filter,
Sometimes I had to turn off the power or remove it from the main unit, and sometimes the message appeared even when the filter was clean.

It is an object of the present invention to provide an air cleaner that eliminates such conventional problems.

Means for Solving Interval Points The present invention provides a gas sensor that detects the degree of gas contamination in the surrounding air, a control means that controls the detection signal, and an electric blower that operates according to a set value from the outside. an operating means for operating the operation of the device; a counting means for counting a predetermined value based on the output of the gas sensor; a timer means for setting a counting time in the counting means; For example, by having a display means for instructing filter replacement, a switching means for switching the predetermined value, and a reset means for resetting the contents of the storage means, the time for filter replacement is automatically and accurately displayed. It is something.

According to the above-mentioned structure, the display means accurately displays the time to replace the filter, and eliminates the trouble of removing the filter from the main body and checking the degree of contamination, and the inaccurate display, which is required in the past.

Embodiment Hereinafter, the structure of an embodiment of the present invention will be explained with reference to the drawings. The operating means will be described below as a remote controller.

In the figure, 1 is the air intake port of the device, 2 is the exhaust port, and 3 is the removable remote control unit, and the air volume setting switch 6 is provided on this.
When you operate a, the device starts operating. Then, an airflow is generated by the electric blower eM7 built into the device. Air taken in through the intake port 1 is discharged from the exhaust port 2, and dust in the air is adsorbed by a filter 5 provided in the flow path. The remote control unit 3 includes an air volume setting switch 6a for setting the air volume of the device (for example, "auto-operation", "high", "medium", and "low") and an air volume setting value display LEDeb consisting of a plurality of light emitting diodes that display the set value. , a timer setting switch Ba that sets the operating time of the device, and a timer setting 1 direct display LE consisting of a plurality of light emitting diodes that display the setting value.
There is D8b.

Next, a description will be given based on FIGS. 2 and 3. When the air volume setting switch 6a is set to automatic operation, the air volume setting value is displayed L by the control means 11, which is formed by a microcomputer or the like.
EDeb indicates automatic operation.

When the gas concentration in the surrounding air increases, the control means 11 operates the electric blower 7 based on the output from the gas sensor 4, and the rotation speed (for example, "strong", "medium", "weak") is displayed as the air volume setting value on the LICD 6b. Display in .

Here, the weighting corresponding to the rotation speed ("strong", "medium", "weak") is set as (3+2+'), and the timer means 1
The counting means 12 counts the highest value of the weighting corresponding to the number of revolutions of the electric blower 7 within a certain predetermined time determined by 6, and this operation is repeated.

Next, cases in which automatic operation is not set to "strong,""medium," or "weak" (hereinafter referred to as manual operation) will be explained.

When manual operation is set by the air volume setting switch 6a, the control means 11 lights up and displays I4D of the air volume setting value display LEDeb corresponding to the rotational speed of the electric blower 7, similarly to automatic operation.

However, here, as in automatic operation, if the highest value during a predetermined period of time is counted by the timer means 16 of weighting at 70 revolutions of the electric blower in the counting means 12, it is necessary to calculate the gas concentration in the surrounding air and the air volume setting switch. There is a possibility that there is a difference from the electric blower speed of 70 rotations in manual operation set in 6&. Therefore, during manual operation, the increase value of the output of the gas sensor 4 is divided into several stages (for example, 3 stages, with M, B, and C in descending order of increase) by 3.2°1 for A, B, and C. The maximum value during a predetermined period of time determined by the timer means 16 is counted by the counting means 12.

As described above, in manual driving, weighting in a method different from that in automatic driving is counted by the counting means 12, and when the counted value reaches a predetermined value, the display means 14 displays the weight.

A desired predetermined value can be selected by the switching means 13 for switching the predetermined value, and the reset means 16 takes a pattern in which the display means 14 is displayed and is turned on when the filter 6 is replaced with a new one, 12 contents are reset.

Effects of the Invention According to the present invention, the level of dirt on the filter can be freely selected and the level of dirt is displayed when the set level of dirt is reached, so there is no problem like in the past, and the time to replace the filter is accurately displayed. It is possible.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an embodiment of the air purifier of the present invention;
FIG. 2 is a circuit block diagram of an embodiment of the air purifier, and FIG. 3 is a diagram showing a remote control unit of an embodiment of the air purifier.
FIG. 4 is a side sectional view of one embodiment of the air cleaner. 3... Operating means, 4... Gas sensor,
6... Filter, 7... Electric blower, 11... Control means, 12... Counting means, 13... Switching means, 14 ... Display means, 15 ... Reset means, 16 ...
・Timer means. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--Intake port 2-11 Colored air port No. 1 Figure 3--Omaki T child actor (Somokong Misaki No. 2 Figure 4 Figure 17- Main salary

Claims (1)

[Claims] A gas sensor that detects the degree of contamination by gas in the surrounding air, a control means that controls the detection signal, an electric blower that operates in accordance with a set value from the outside, and an operation means that operates the operation of the device. a counting means for counting a predetermined value based on the output of the gas sensor; a timer means for setting a counting time in the counting means; and a display means for instructing replacement of the filter when the content of the counting means reaches a predetermined value; An air purifier comprising a switching means for switching a predetermined value, and a reset means for resetting the contents of the counting means.