JPH1033925A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner detecting the contamination of indoor air to perform proper air cleaning. SOLUTION: An air cleaner is constituted of a sensor 5 optically detecting a particle component, a memory means storing the detection signals of the sensor as a plurality of detection data at a predetermined interval within a predetermined time, a reference value judging means 8 setting the lowest value of a plurality of detection data as a reference value, an air amt. determining means 9 comparing the reference value of the reference value judging means 8 and the detection signal of the sensor to determine an air vol., a blower 2 controlled on the basis of air vol. by the air vol. determining means 9 and the filter 6 provided to the air passage of the blower 2 to remove a contaminant in air and the lowest value rewritten at a predetermined interval within a predetermined time after the elapse of a definite value is set to a reference value to operate an air cleaner main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for purifying indoor air by removing dust from indoor air in a living room or the like.

[0002]

2. Description of the Related Art In recent years, air purifiers for purifying indoor air in living rooms and the like automatically detect and remove tobacco smoke generated in a house, pollen invading from the outside, floating dust in the air, and the like. What is required is.

A conventional air purifier of this type will be described with reference to FIGS. As shown in the figure, an air purifier main body 101 mounted on a wall has a blower 102 inside in the shape of a box with an open front, and emits air dirt particles passing through an internal ventilation path with a light emitting LED 104 and a light receiving element. A sensor 106 for optically detecting the room 105 is provided to detect the contamination of the air in the room and drive the vehicle.

[0004]

In the configuration of such a conventional air purifier, dirt adheres to the wall of the ventilation passage 103 inside the sensor 106 in order to optically detect the particle component in the indoor air. In such a case, optical components such as the light-emitting LED 104 and the light-receiving element 105 may detect reflected light due to dirt on the wall surface, and the output voltage of the sensor 106 in a dust-free state changes with time to correctly detect indoor dirt. It was difficult.

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 capable of properly detecting indoor air dirt and performing appropriate cleaning.

[0006]

In the air purifier of the present invention, a sensor for optically detecting a particle component and a detection signal of the sensor are stored as a plurality of detection data at predetermined intervals within a predetermined time. A storage unit, a reference value determination unit that uses the lowest value of the storage unit as a reference value, and an air volume determination unit that determines an air volume by comparing a reference value of the reference value determination unit with a detection signal of the sensor. A blower whose air flow is controlled by the air flow determining means, and a filter provided in a ventilation path of the blower to remove air stains, wherein the plurality of pieces of detection data are provided at predetermined intervals within a predetermined time after a predetermined time has elapsed. The air purifier is configured to detect the contamination of the indoor air and adjust the operating air flow rate using the lowest value among them as a new reference value.

According to the present invention, it is possible to provide an air purifier capable of correctly detecting indoor air dirt and performing appropriate cleaning.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 of the present invention provides a box-shaped air purifier body formed to circulate room air, a sensor for optically detecting a particle component,
Storage means for storing the detection signal of the sensor as a plurality of pieces of detection data at predetermined intervals within a predetermined time; reference value determination means for setting the lowest value of the storage means as a reference value; Air volume determining means for determining the air volume by comparing the value and the detection signal of the sensor, a blower whose air volume is controlled by the air volume determining means, and a filter provided in a ventilation path of the blower to remove air dirt. The plurality of detection data are rewritten at predetermined intervals within a predetermined time after a predetermined time has elapsed, and the lowest value among them is used as a new reference value to detect indoor air contamination and adjust the operating air flow rate. The air purifier has a configuration in which the lowest value of the detection data stored in advance at a predetermined interval within a predetermined time is used as a reference value and compared with the detection signal of the sensor. It has the effect of controlling the air volume of the body.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) As shown in the figure, a box-shaped air purifier body 1 for circulating room air has a blower 2 inside and a ventilation passage for guiding room air to the blower 2 having a diameter of 0.01 to 0.01 mm. 5μ
a sensor 5 for optically detecting scattered light of particles having a size of about m using the light emitting LED 3 and the light receiving element 4, a filter 6 for removing dirt of air passing through the ventilation path, and a detection signal of the sensor 5 (VSA) is detected by 12 detection data (VC1 to VC1) at a predetermined interval of 2 hours within a predetermined time of 24 hours.
2) and the lowest value among the detection data stored in the storage means 7 is set as a reference value (VC
R), and the reference value determining means 8
Reference value (VCR) and detection signal (VSA) of sensor 5
Determining means 9 for determining the air volume of blower 2 by comparing
And

The storage means 7 is provided so that the twelve pieces of data can be rewritten with data at a predetermined interval of 2 hours within a predetermined time of 24 hours after a lapse of a predetermined time, that is, 2 hours.

In the above configuration, when the power of the air purifier main body 1 is turned on, the sensor 5 detects the contamination of the indoor air and stores the cleanest state (low value) among the detection data every two hours. The data is sequentially stored in the means 7 and the data for 24 hours is made into 12 data.

Usually, when the indoor air becomes dirty, the air purifier body 1 is provided so as to remove the dirt from the indoor air in about 30 to 60 minutes. The detection data in the state is stored in the storage means 7 in order.

The reference value judging means 8 sets the cleanest state (low value) of the twelve data as a reference value (VCR).
Is compared with the current detection signal (VSA) of the sensor 5, and according to the difference, the blower 2
The air volume of the air will be adjusted.

Next, when dirt such as tobacco adheres to the inside of the sensor 5 by using the air purifier for a long time,
The detection signal is affected by light reflected by the dirt attached to the light receiving element 4 and gradually drifts toward a value when the room air is dirty even when the room air is clean.

The storage means 7 follows the drift of the sensor 5 and stores, for every 24 hours, the most beautiful state of the detected data for 24 hours in order.

After a lapse of a certain time, the stored data for 24 hours is rewritten to be the latest one.
The reference value judging means 8 calculates one cycle of the indoor environment change 2
The lowest value among the four hours is a reference value as a value in a clean state.

As described above, according to the air purifier of the first embodiment of the present invention, the sensor 5 for optically detecting a particle component
Is stored as a plurality of pieces of detection data at a predetermined interval within a predetermined time, and the lowest value of these detection data is set as a reference value, and the reference value is compared with the detection signal of the sensor 5 to determine the airflow. Is determined, the air purifier main body 1 can be operated by detecting indoor air contamination, and a plurality of pieces of detection data are rewritten at predetermined intervals within a predetermined time after a predetermined time elapses. By setting the lowest value as a new reference value, even if the inside of the sensor 5 becomes dirty over time and the signal at the time of dustless detection drifts, air contamination can be correctly detected based on the clean state of indoor air. The air purifier main body 1 can be operated.

Further, by setting the predetermined interval to two hours longer than one operation time of 30 to 60 minutes depending on the cleaning ability of the air purifier, the sensor signal in a clean state in the room is stored at predetermined intervals, The accuracy of detection of the minimum value within a predetermined time can be improved, the reference value can be determined more correctly, and the air purifier main body 1 can be operated by detecting the contamination of the indoor air.

Further, by setting the predetermined time to 24 hours,
The reference value can be determined from one cycle of the occupant's life pattern, and the air cleaner body 1 can be automatically operated to keep the room air in the cleanest state.

[0020]

As described above, according to the present invention, a detection signal of a sensor for optically detecting a particle component is stored as a plurality of pieces of detection data at a predetermined interval within a predetermined time, and the detection data is stored in the detection data. By using the lowest value of the reference value as a reference value and comparing the reference value with the detection signal of the sensor to determine the air flow, it is possible to detect indoor air contamination and operate the vehicle, and to collect a plurality of detection data. Rewriting at a predetermined interval within a predetermined time after a certain time elapses, and by setting the lowest value among them as a new reference value, the inside of the sensor becomes dirty over time and even if the signal at the time of dust-free detection drifts It is possible to provide an air purifier capable of properly detecting air dirt based on a clean state of indoor air and performing appropriate cleaning.

Further, by setting the predetermined interval to be longer than one operation time based on the cleaning capability of the air purifier, the sensor signal in a clean state in the room is stored at each predetermined interval, and the sensor signal within the predetermined time is stored. The accuracy of detection of the minimum value can be improved, the reference value can be determined more correctly, and the operation can be performed by detecting the contamination of the indoor air.

By setting the predetermined time to 24 hours,
The reference value can be determined from one cycle of the occupant's life pattern, and the air cleaner can be automatically operated to keep the room air in the cleanest state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an air purifier according to Embodiment 1 of the present invention.

FIG. 2 is a partially broken perspective view showing the configuration of the sensor according to the first embodiment.

FIG. 3 is a characteristic diagram showing an example of detecting dirt of the air purifier according to the first embodiment.

FIG. 4 is a perspective view showing a configuration of a conventional air purifier.

FIG. 5 is a perspective view showing a configuration of a sensor of the air purifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier main body 2 Blower 5 Sensor 6 Filter 7 Storage means 8 Reference value judgment means 9 Air volume determination means

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[Procedure amendment]

[Submission date] September 18, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In the air cleaner of the present invention According to an aspect of the sensor for detecting the optically particulate components, stores the detection signal of the sensor as a plurality of detection data at predetermined intervals in a predetermined time period Storage means, reference value determination means using the lowest value of the storage means as a reference value,
Air volume determining means for determining the air volume by comparing the reference value of the reference value determining device with the detection signal of the sensor, a blower whose air volume is controlled by the air volume determining means, and air provided in a ventilation path of the blower. and a filter for removing dirt, after a lapse of the predetermined time, electromotive force of the predetermined time
The points are shifted by a predetermined time shorter than a predetermined time, and the plurality of detections are performed.
Rewriting the knowledge data, rewriting within the predetermined time
Before the lowest value of the field was detected data as a new reference value
This is a configuration of an air purifier that adjusts a driving air flow rate by comparing with a detection signal of the sensor .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a box-shaped air purifier body formed to circulate indoor air, a sensor for optically detecting a particle component , and storage means for storing a plurality of detection data at predetermined intervals a sensor detection signal within a predetermined time period, the reference value determining means as a reference value the lowest value of the storage means, the reference value of the reference value determining means And an air volume determining means for determining an air volume by comparing the detection signal of the sensor, and a blower whose air volume is controlled by the air volume determining means,
And a filter for removing dirt in the air is provided to the air passage of the blower, after a lapse of the predetermined time, the predetermined
The starting point of the time is shifted by a fixed time shorter than a predetermined time,
Rewrite several pieces of detection data within the specified time
Rewritten the lowest value among the sensing data compared with the detection signal of the sensor as a new reference value is obtained by the structure of the air purifier to adjust the operating air volume, at predetermined intervals in the Jo Tokoro time The lowest value of the stored detection data is used as a reference value, and this reference value is updated at regular intervals.
This has the effect of controlling the air volume of the air purifier body in comparison with the detection signal of the sensor.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

The storage means 7 stores a predetermined time 24
After a lapse of time and storing 12 data,
The detection data is rewritten by shifting the starting point of the 24-hour period by a predetermined time, that is, 2 hours , and is provided so that after a predetermined time of 2 hours, the detection data is rewritten by data of a predetermined interval of 2 hours within a predetermined time of 24 hours. .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

In the above configuration, when the power of the air purifier main body 1 is turned on, the sensor 5 detects the contamination of the indoor air, and every two hours, the cleanest state (low value) in the detected data is obtained. The data is sequentially stored in the storage means 7 and the data for 24 hours is made into 12 data.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

[0020]

According to the present invention as described above, according to the present invention, the sensor detection signal to detect the optically particulate components within a predetermined time
And store it as a plurality of detection data at predetermined intervals,
By using the lowest value among these detection data as a reference value and comparing the reference value with the detection signal of the sensor to determine the air volume, it is possible to detect and clean the indoor air and operate the vehicle. After a predetermined time,
Shift the starting point of the fixed time by a fixed time shorter than the predetermined time
Rewrite the detected data and write within the specified time
By setting the lowest value of the replaced detection data as the new reference value, even if the inside of the sensor becomes dirty over time and the signal at the time of dustless detection drifts, it will be correct based on the clean condition of the indoor air. It is possible to provide an air purifier that can detect air contamination and perform appropriate cleaning.

Claims (3)

[Claims] 1. A box-shaped air purifier main body formed to circulate indoor air, a sensor for optically detecting a particle component, and a plurality of detection signals from the sensor at predetermined intervals within a predetermined time. Storage means for storing the detected data as the reference data, a reference value determining means using the lowest value of the storage means as a reference value, and comparing the reference value of the reference value determining means with the detection signal of the sensor to determine the air volume. Air flow rate determining means, a blower whose air flow rate is controlled by the air flow rate determining means, and a filter provided in a ventilation path of the blower for removing dirt from the air, wherein the plurality of pieces of detection data are obtained after a lapse of a predetermined time. An air purifier configured to rewrite at a predetermined interval within a predetermined time and detect a dirt in indoor air and adjust a driving air flow rate by using the lowest value as a new reference value. 2. The air purifier according to claim 1, wherein the predetermined interval is set longer than one operation time of the air purifier. 3. The air purifier according to claim 1, wherein the predetermined time is 24 hours.