JPS60206424A - Air purifier - Google Patents

Abstract

PURPOSE:To perform automatic dust collecting operation with high reliability by simple circuit constitution without using a sensor, in an air purifier, by performing high speed operation at the beginning for a definite time before automatically changing over the same to lower speed operation. CONSTITUTION:The rotary speed of an electromotor 5 is changed over in the order of a high speed tape 23, an intermediate speed tap 24 and a low speed tap 25 by operating a movable contact piece 21 at every definite time by a time control part 11. The electromotor 5 rotates a blower blade and introduced dust such as smoke is sucked and collected by a dust collection part 10 and an anion generation part 12 by applying a high DC voltage to both parts from a high voltage part 13. By this mechanism, rapid and rough dust collection is performed by high speed operation at the beginning and, thereafter, precise dust collection is performed by low speed operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an air cleaner that collects cigarette smoke, dust, dust, etc. floating in a closed space such as a room or a car.

(Example) Prior art As technologies prior to the present invention, there are Japanese Patent Publication No. 52-25587 and Publication No. 55-6692. The devices described in these publications detect dirt in the air using a sensor and operate the vehicle. Therefore, a sensor and its peripheral driving circuit are required, making the circuit complicated.

Furthermore, even if sensors can detect large amounts of smoke generated in the event of a fire, it is extremely difficult to detect smoke from cigarettes being smoked indoors, making the automatic operation of air purifiers unreliable.

(c) Purpose of the Invention The object of the present invention is to provide an air cleaner that performs highly reliable automatic dust collection operation with a simple circuit configuration without using sensors or the like.

(D) Structure of the Invention The present invention initially performs high-speed operation for a certain period of time and then automatically switches to lower-speed operation, thereby collecting dust all at once at the initial stage of operation, and then slowly collecting dust with high collection efficiency. The structure is such that a high dust collection rate can be obtained quickly.

(e) The air purifier (1) has a main body case (2) molded from synthetic resin that is divided into upper and lower halves, and a fan case (3) that is integrally formed with the main body case (2) and has air blowing blades. (4) Storage 1-
Electric motor (5) built into the main body case (2)
and a Suita grill (6) formed on the front of the main body case 2), and an air purifier stop switch (7) and a speed regulating switch (8) formed in the center of the Suita grill (6). 9), a removable dust collection part (10) formed from the top surface to the rear surface of the main body case (2), and a board (not shown) formed in the main body case (2). time control section 11) and the dust collection section (10)
and a high voltage section (13) that applies and generates a high DC voltage to the anion generating section (12).

The dust collecting section (10) includes a breathable first electrode plate (14) fixed with a screw so as to close the opening of the main body case (2).
), a lattice-shaped suction grill (15) that is detachably attached so as to close the opening of the main body case (2), and a breathable second electrode plate (15) that is attached to the inner surface of the suction grill (15).
16), a first electrode plate (14) and a second electrode plate (16)
) A filter (17) made of a dielectric material and a deodorizing filter (18) made of activated carbon or the like are sandwiched between the two. When a high DC voltage is applied to the first electrode plate (14) and the second electrode plate (16), the dielectric filter (17) causes dielectric polarization to attract and collect dust such as smoke.

The rotational speed of the electric motor (5) is determined by rotating the movable contact piece (21) into a high-speed tap (22), a medium-speed tap (23), and a low-speed tap (
24) can be manually switched by the speed governor switch (8), and the movable contact piece (21) can also be automatically switched to the time control section <11. The time control unit (11) operates a relay (25) at regular intervals to move the movable contact piece (21> from the high speed tap (23) to the medium speed tap (24>) and from the medium speed tap (24). from the low speed tap (25) to the medium speed tap (25).
<24). The switching of each of the taps (23), (24), and (25) is performed according to a preset pattern. First, referring to the dust collection characteristics shown in Figure 4, the area of the dust collection part (10) is approximately 60 OCTI + 2 air purifier (1) in a six-tatami room with approximately 20 cigarettes smoked ( This state is smoke density 100
%) at a room temperature of 31°C, continuously using high-speed taps (2
When connected to 3) and operated, a dashed line draws a curve.

U,) □Ka, wa,. %<2. Yay, yay L? = ＜
After 6 months, the dust collection efficiency decreases and the slope of the curve becomes gentler, reaching a steady state at about 10% and no longer being able to collect dust. This is because the dust collected in the dust collecting section (10) is re-dispersed by high-speed wind. Therefore, 15 minutes after the start of operation when the smoke concentration reaches approximately 50%, the high speed tap (23) is switched to the medium speed tap (24), and the smoke concentration reaches approximately 35%.
%, switch to low speed tap (25) after 20 minutes.

Then, as shown by the solid line, the curve is drawn without becoming gentle, and reaches a steady state at about 5%. The above-mentioned decrease in smoke density can be observed in a pattern that is almost constant over time without being measured by a sensor or the like. Therefore, in this embodiment, the time control section (11) controls the start of operation by the high-speed tap 2.
3), and automatically controls to switch to medium speed tap (24) after 15 minutes and to low speed tap (25) 25 minutes after the start of operation. After 60 minutes have passed since the start of operation, the pattern of operating at the low speed tap 25> for 30 minutes and then operating at the medium speed tap (24) for 10 minutes is repeated.

FIG. 5 shows another embodiment of the present invention, in which the operation of the electric @ (5) is controlled by the high-speed tap (23) and the low-speed tap (23).
5), and the switching by the time control unit (11) is to operate with the high speed tap (23) for 20 minutes after the start of operation, and then operate with the low speed tap (25) until 70 minutes after the start of operation. After that, the pattern of operation is repeated for 40 minutes at the low speed tap (25), 10 minutes at the high speed tap 23), and then 40 minutes at the low speed tap (25). In order to achieve automation, a light switch (31) is connected in parallel with the stop switch (7), which is turned on when a certain amount of light or more is detected. The air purifier (1) starts operating when it senses an increase in the amount of light.It stops operating when the door falls or the shutters or curtains are closed, and starts operating at night when the lights are turned on. Furthermore, this embodiment incorporates a notification body (33) that is activated by a gas detection sensor (32).
If a gas leak occurs indoors, toxic gases such as Co, CO2, etc. increase indoors, or smoke suddenly increases, the sensor (32) detects this and issues a notification using a buzzer, light emitter, etc. The sensor (33) notifies the user of any abnormality.Also, while the air purifier (1) is in operation, the detection is carried out smoothly and quickly.The sensor (32)
is formed in a portion close to the suction port of the air cleaner (1).

Note that the present invention is not limited to the above-described embodiments. The operation pattern by the time control section (11) changes depending on various factors such as the area of the dust collection section (10), the operating speed of the electric motor (5), and the volume of the room to be used, and is determined to be the optimum operation pattern at the time of design. In that case, at least initially, it is necessary to operate at high speed for a certain period of time.Also, if it is possible to change the optimal pattern with a switch depending on the volume usage state of the room, it will be possible to set the optimal concentration for use. Dust efficiency is obtained.

Effects of the Invention The present invention operates at high speed initially under time control to quickly and roughly collect dust, and then operates at a low speed to perform precise dust collection. It has advantages such as easy operation and ease of use.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the air cleaner of the present invention, Figure 2 is a sectional view,
FIG. 3 is an electric circuit diagram, FIG. 4 is a dust collection characteristic diagram, and FIG. 5 is an electric circuit diagram of another embodiment. (2)...Body case, (5)...Electric motor, (8>...
・Speed control switch, (11n...time control section. Applicant: Sanyo Electric Co., Ltd. Agent Patent Attorney: Shizuo Sano Figure 2 3 Figure 3 210 Figure 4 B! Seki (minutes) Figure 5 2

Claims (1)

[Claims] 1. An air purifier characterized in that after initially running at high speed for a certain period of time, the air purifier automatically switches to lower speed operation.