JPH10227499A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start a dust collecting operation of dust before a parson feels discomfort. SOLUTION: The air cleaner has a suction port 2 for sucking the air in a body 1, and an air outlet 5 for diffusing the air out of the body 1 so that dust in the air is removed by a dust collecting unit 10 while circulating the air sucked from the port 2 into the body. In this case, the cleaner comprises an air duct 16 for feeding the outdoor air to a negative pressure direction in the body 1, and a sensing part 13 having a dust sensor 8 for sensing dust flowing in the duct 16. A front side opening 14 of the part 13 is provided at a lower side of the port 2, and the dust is sensed by the sensor 18 before the dust is sucked to the port 2.

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 sensor for detecting dust and the like, and more particularly to an air purifier having improved responsiveness of a sensor for detecting dust and the like such as house dust. It is about.

[0002]

2. Description of the Related Art When house dust collected on a floor surface is rolled up by wind generated by daily activities such as raising and lowering a futon or walking, the house dust is diffused into a room. This diffused air is introduced into the main body of the air purifier and circulated by the circulation fan, and the dust collection unit removes dust and the like to purify the indoor air.

At this time, in the conventional air purifier, the dirt in the indoor air is detected by a sensor for detecting dust and the like, and the air volume of the circulating fan is adjusted based on the detected value to automatically control the dust collecting ability of the dust and the like. Was adjusted. It is desirable to use an optical sensor for detecting this dirt, and this sensor is generally installed in an empty space near the operation section or on the back side of the main body.

[0004]

According to the air purifier constructed as described above, house dust is relatively poor in diffusivity due to its relatively large dust particles, and is indoors after being wound up by wind generated in daily activities. It takes time to spread. Then, since the house dust is wound up and diffused to the vicinity of the dust sensor and detected by the sensor, the air cleaner does not start the dust collection operation even though a person feels discomfort due to the house dust. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to detect dust and the like such as house dust rolled up by living activities before the dust is diffused, and to detect house dust. It is an object of the present invention to obtain an air purifier capable of improving the detection sensitivity by shortening the time required for the air purifier and starting a dust collecting operation of dust or the like before a person feels discomfort.

[0006]

The air purifier according to the present invention is configured as follows. (1) An air cleaner that has a suction port for sucking air into the main body and a blowout port for blowing air to the outside of the main body, and removes dust in the air by a dust collection part while circulating the air sucked from the suction port into the main body. A detection unit having an air passage through which external air flows in a negative pressure direction in the main body and a sensor for detecting dust flowing in the air passage, and an opening of the detection unit is provided below the suction port. The suction port detects dust by a sensor of the detection unit before the suction port sucks the dust.

(2) In the air purifier of the above (1), the opening of the detecting section is provided so as to protrude toward the front side of the main body. (3) In the air purifier of the above (1), the vicinity of the opening of the detection section is formed in a concave shape with the opening as a center, and the dust is retained in the concave portion, so that the time for the opening to take in the dust is increased. It is like that.

(4) In the air purifier of (1), a convex portion is provided at least above the opening of the detecting portion.
The flow of the dust toward the suction port is blocked so that the dust stays, and the time taken by the opening to take in the dust is increased.

(5) In the air purifier of the above (1), the vicinity of the opening of the detecting portion is formed in a concave shape with the opening as a center, and a convex portion is provided at least above the concave portion.
The dust is retained in the concave portion and the flow of the dust toward the suction port is blocked to retain the dust, thereby increasing the time for the opening to take in the dust.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a perspective view of Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is an operation explanatory view of FIG. 1 is a main body of the air purifier, 2 is a suction port provided on the front part 3 of the main body 1 for sucking air into the main body 1, 4 is a grill provided on the suction port 2, 5 is an upper surface part 6 of the main body 1 Body 1 provided at the back
This is an outlet for blowing air from inside to outside.

Reference numeral 7 denotes a circulating fan which is disposed near the rear surface 8 of the main body 1 and introduces air introduced from the suction port 2 into the main body 1 and blows out the air from the outlet 5. It is a motor that is attached by screws or the like and drives the circulation fan 7. Reference numeral 10 denotes a dust collector provided between the suction port 2 and the fan 7 to remove dust in the air introduced into the main body 1 from the suction port 2, and 11 denotes a dust collector provided between the dust collector 10 and the fan 7. This is a partition having a through hole 12 near the center for allowing air to flow therethrough.

Reference numeral 13 denotes a detection unit that detects contamination of the indoor air, adjusts the air volume of the circulation fan 7 based on the detected value, and automatically adjusts the dust collection capability. This detection unit 13 is
A front opening 14 which is located below the suction port 2 provided at the front side and opens to the front part 3; a rear opening 15 which opens to the downstream side of the dust collecting part 10 where the negative pressure is large; An air passage 16 that extends rearward from the opening 14, bends substantially in an L-shape at the front of the dust collector 10, passes through the lower part of the dust collector 10, and reaches the rear opening 15 at the rear of the dust collector 10; Wind path 16 near front opening 14
And an optical dust sensor 18 for detecting dust in the air such as cigarette smoke and house dust, which is supported from above and below by support members 17a and 17b. In addition, 19 is a switch mechanism for operating the air purifier, 20 is a floor surface, 21 is house dust, and 22 is a wind generated by daily activities.

In the above description, the front opening 14 is disposed below the suction port 2 of the main body 1. However, the front opening 14 may be located at any position below the suction port 2. May be arranged near the bottom of the slab. Further, in the above description, the rear opening 15 is provided on the downstream side of the dust collecting unit 10 having a large negative pressure, but even between the upstream side of the dust collecting unit 10 and the grill 4 and the dust collecting unit 10. If the position has a negative pressure like a space,
It may be provided at any position.

The operation of the first embodiment configured as described above will be described. Due to daily activities such as raising and lowering the futon and walking, a wind 22 flowing along the floor 20 is generated. The house dust 21 is wound up by the wind 22
Together with this, it moves along the floor surface 20 and gradually diffuses into the indoor space.

A part of the house dust 21 moves toward the air purifier in the route shown in FIG. 3A and is sucked into the main body 1 by the suction port 2 before it is diffused. At this time, since the front opening 14 of the detection unit 13 is opened below the suction port 2 of the main body 1, a part of the house dust 21 moving in the direction A is sucked before the suction port 2 sucks. The air is sucked into the air passage 16 by the front opening 14, reaches the dust sensor 18, and is detected there.

Therefore, without waiting for the house dust 21 to diffuse into the room, the house dust 21 is sucked from the front opening 14 in a dense state before being sucked into the suction port 2.
This is detected by the dust sensor 18. According to the first embodiment, it is possible to reduce the time required to detect house dust 21 rolled up by living activities and start the dust collection operation before a person feels discomfort.

Embodiment 2 FIG. 4 is a diagram for explaining the operation of Embodiment 2 of the present invention. In the first embodiment, the front opening 14 is provided below the suction port 2 of the main body 1. However, in the second embodiment, the front opening 14 of the detection unit 13 is formed in the suction port 2 of the main body 1 as shown by a broken line. The lower part is provided so as to protrude from the front side of the main body 1. The other configuration is the same as that of the first embodiment, and the description is omitted.

The operation of the second embodiment configured as described above will be described. The house dust 21 rolled up by daily activities mainly moves along the floor surface 20 by the flow path A, then collides near the lower end of the front surface of the main body 1, rises along the wall surface of the front surface 3, and sucks. Although the air is sucked into the main body 1 by the mouth 2, the rate of movement in the flow path B increases with an increase in the amount of air sucked from the suction port 2, and after moving along the floor surface 20, the air is obliquely drawn on the front surface of the main body 1. And is sucked by the suction port 2.

At this time, the opening 14 of the detection unit 13 is
, The opening 14 of the detection unit 13 is opened on both of the flow paths A and B, and the house dust 21 is detected with high sensitivity. According to the second embodiment, house dust 21 rolled up by living activities can be detected with high sensitivity, the time required for detection can be reduced, and the dust collection operation can be started before a person feels discomfort. .

Third Embodiment FIG. 5 is a perspective view of a third embodiment of the present invention, and FIG. In the first embodiment, the front opening 14 is provided on the lower front surface of the suction port 2 of the main body 1, but in the third embodiment, the vicinity of the opening 14 is centered around the opening 14 to the rear. For example, a concave portion 23 is formed by denting into a hemisphere. Other configurations are the same as those in the first embodiment, and a description thereof will not be repeated. In the above description, the concave portion 23 is formed in a hemispherical shape, but is not limited to this shape, and may have another shape.

The operation of the third embodiment configured as described above will be described. A wind 22 flowing along the floor 20 is generated by the living activity. The house dust 21 is wound up by the wind 22 and moves along the floor 20 together with the wind 22 and gradually diffuses into the indoor space.

A part of the house dust 21 moves toward the air purifier in the route shown in (a) before it is spread, and is sucked by the suction port 2. Since the front opening 14 of the detection unit 13 is opened below the suction port 2 of the main body 1, the house dust 21 moving in the direction A is provided.
Is sucked by the front opening 14 before the suction port 2 sucks, reaches the dust sensor 18 and is detected there. At this time, the concave portion 2 is located near the front opening 14.
3, the part of the house dust 21 rising along the wall surface of the front part 3 stays in the concave part 23, and the opening 14 provided in the concave part 23 takes more time to take in the house dust 21. I do.

According to the third embodiment, house dust 21 rolled up by living activities can be detected with high sensitivity and the time required for detection can be shortened, and the dust collection operation is started before a person feels discomfort. be able to. In particular, the detection unit 1
Since the concave portion 23 is formed in the vicinity of the front opening 14 of 3, the time for the opening 14 to take in the house dust 21 is increased, and the sensitivity of the detection sensor 18 is improved.

Fourth Embodiment FIG. 7 is a diagram for explaining the operation of a fourth embodiment of the present invention. In the first embodiment, the front opening 14 is provided below the suction port 2 of the main body 1, but in the fourth embodiment, a cross section is formed between the suction port 2 and the front opening 14 by a horizontally long straight line projecting to the front. Is provided with a tapered convex portion 24, and a part of the front surface portion 3 is raised to be integrally formed. The other configuration is the same as that of the first embodiment, and the description is omitted.

In the above description, the protruding portion 24 is formed in a horizontally long linear shape and has a tapered cross section. However, the present invention is not limited to this. Further, although a part of the front part 3 forming the main body 1 is raised and integrally formed, the convex part 24 may be formed of an article different from the front part 3 and attached to the front part 3. Good.

The operation of the fourth embodiment configured as described above will be described. Due to daily activities such as raising and lowering the futon and walking, a wind 22 flowing along the floor 20 is generated. The house dust 21 is wound up by the wind 22
Together with this, it moves along the floor surface 20 and gradually diffuses into the indoor space.

A part of the house dust 21 moves toward the air purifier according to the route shown in (a) before it is spread, and is sucked into the main body 1 by the suction port 2. At this time, since the front opening 14 of the detection unit 13 is opened below the suction port 2 of the main body 1, a part of the house dust 21 moving in the direction a is moved forward before the suction port 2 sucks. It is sucked by the opening 14 and reaches the dust sensor 18 where it is detected.

At this time, between the suction port 2 and the front opening 14, the convex portion 2 having a horizontally long straight shape and a tapered cross section is formed.
4, the flow of a part of the house dust 21 rising along the wall surface of the front part 3 is interrupted and stays below the convex part 24, and the front opening part 14 removes the house dust 21. The time to capture increases.

According to the fourth embodiment, house dust 21 rolled up by living activities can be detected with high sensitivity and the time required for detection can be reduced, and the dust collection operation is started before a person feels discomfort. be able to. In particular, the convex portion 2
4, the time for the front opening 14 of the detection unit 13 to take in the house dust 21 is increased, and the sensitivity of the dust sensor 18 is improved. In addition, a part of the front part 3 is raised to form the convex part 2.
In the case where 4 is integrally formed, it is not necessary to newly provide an additional component.

Fifth Embodiment FIG. 8 is a perspective view of a fifth embodiment of the present invention. In the fourth embodiment, a horizontally long linearly projecting convex portion 24 having a tapered cross section is provided between the suction port 2 and the front opening 14. A convex portion 2 having a substantially inverted U-shaped arch and having a tapered cross section between the openings 14.
4 to cover the front opening 14 from above.

According to the fifth embodiment configured as described above, similarly to the fourth embodiment, a part of the house dust 21 is sucked by the front opening 14 before the suction port 2 sucks, and the dust sensor 18 and is detected here.
At this time, a substantially inverted U is provided between the suction port 2 and the front opening 14.
Since the convex portion 24 having a V-shaped arch and having a tapered cross section is provided, a part of the house dust 21 rising along the wall surface of the front surface portion 3 causes the flow of the house dust 21 to reach the upper surface portion of the convex portion 24. Part of the house dust 21 stays below the protruding portion 24 because of being blocked by both side portions, and the time for the front opening 14 to take in the house dust 21 increases.

According to the fifth embodiment, house dust 21 rolled up by living activities can be detected with high sensitivity, and the time required for detection can be reduced, and the dust collection operation is started before a person feels discomfort. be able to. In particular, the convex portion 2
4 is formed in the shape of an arch, so that the flow of house dust 21 toward the suction port 2 is blocked and the time for taking in the house dust 21 is increased, and the sensitivity of the dust sensor 18 is further improved.

Sixth Embodiment FIG. 9 is a perspective view of a sixth embodiment of the present invention, and FIG. In the third embodiment, the vicinity of the front opening 14 of the detection unit 23 is recessed rearward to form a recess 23,
Further, in the fifth embodiment, the substantially inverted U-shaped arch-shaped convex portion 24 is provided between the suction port 2 and the front opening portion 14, but in the sixth embodiment, the vicinity of the front opening portion 14 of the detection unit 23 is provided. A concave portion 23 is formed by being recessed rearward, and a substantially inverted U-shaped arch-shaped convex portion 24 is provided below the suction port 2 at an upper portion and a side portion of the concave portion 23.

The operation of the sixth embodiment configured as described above will be described. When a wind 22 flowing along the floor 20 is generated by daily activities, the house dust 21 is wound up by the wind 22 and moves along the floor 20 together with the wind 22, and gradually diffuses into the indoor space.

A part of the house dust 21 moves toward the air cleaner according to the route shown in (a) before it is spread, and is sucked into the main body 1 by the suction port 2.
At this time, since the front opening 14 of the detection unit 13 is opened below the suction port 2 of the main body 1, a part of the house dust 21 moving in the direction a is moved forward before the suction port 2 sucks. It is sucked by the opening 14 and reaches the dust sensor 18 where it is detected.

At this time, since the concave portion 15 is formed near the front opening 14, a part of the house dust 21 rising along the wall surface of the front portion 14 stays in the concave portion 23. Further, since the convex portion 24 is provided between the concave portion 23 and the suction port 2, the house dust 21 accumulated in the concave portion 23 is further blocked by the convex portion 24 from flowing upward. Thus, the time for the front opening 14 of the detection unit 23 to take in the house dust 21 is considerably increased.

According to the sixth embodiment, house dust 21 rolled up by living activities can be detected with high sensitivity, and the time required for detection can be reduced, and the dust collection operation is started before a person feels discomfort. be able to. In particular, the detection unit 1
Since the concave portion 23 is formed in the vicinity of the front opening 14 of FIG. 3 and the convex portion 24 is arranged in an arch shape so as to cover the concave portion 15, the time for the detecting portion 23 to take in the house dust 21 is greatly increased. The effect of blocking the flow of the house dust 21 toward the suction port 2 is increased, and the sensitivity of the dust sensor 18 is further improved.

[0038]

As is clear from the above description, according to the air purifier of the present invention, the following effects can be obtained. In the description, the same reference numerals as those in the claims denote the effects of the respective claims. (1) A detection unit having an air passage through which external air flows in a negative pressure direction in the main body and a sensor for detecting dust flowing in the air passage is provided, and an opening of the detection unit is provided below the suction port. It is configured so that the dust is detected by the sensor of the detection unit before the suction port sucks the dust, so that the response of the sensor that detects the house dust without increasing the size of the device and complicating the structure Performance can be improved.

(2) Since the opening of the detecting portion is provided so as to protrude from the front side of the main body, house dust rolled up by living activities can be detected with high sensitivity, and the time required for detection can be shortened. The dust collection operation can be started before the user feels pleasure.

(3) The vicinity of the opening of the detecting section is formed in a concave shape with the opening as a center, and the dust is retained in the concave section, so that the time for the opening of the detecting section to take in the dust is increased. Therefore, the time for the opening to take in house dust increases, and the sensitivity of the sensor can be improved.

(4) A convex portion is provided at least above the opening of the detecting portion, so that the flow of dust toward the suction port is blocked and the dust stays, so that the time for which the opening takes in the dust is increased. Therefore, the time for the opening of the detection unit to take in dust increases, and the sensitivity of the sensor can be improved.

(5) The vicinity of the opening of the detection portion is formed concavely around the opening, and a convex portion is provided at least above the concave portion, so that the dust stays in the concave portion and the flow is interrupted. , And the time taken by the opening to take in the dust increases, so that the time taken by the opening of the detection unit to take in the dust increases, and the sensitivity of the sensor can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of Embodiment 1 of the present invention.

FIG. 2 is a longitudinal sectional view of the first embodiment.

FIG. 3 is an operation explanatory view of the first embodiment.

FIG. 4 is an operation explanatory view of Embodiment 2 of the present invention.

FIG. 5 is a perspective view of a third embodiment of the present invention.

FIG. 6 is an operation explanatory view of the third embodiment.

FIG. 7 is an operation explanatory view of Embodiment 4 of the present invention.

FIG. 8 is a perspective view of a fifth embodiment of the present invention.

FIG. 9 is a perspective view of a sixth embodiment of the present invention.

FIG. 10 is an operation explanatory view of the sixth embodiment.

[Explanation of symbols]

1 body, 2 inlet, 5 outlet, 10 dust collector, 1
3 detection unit, 14 opening, 16 air passage, 18 dust sensor, 23 concave part, 24 convex part.

Claims (5)

[Claims] A suction port for sucking air into the main body and an air outlet for blowing the air to the outside of the main body; and collecting dust in the air while circulating the air sucked from the suction port into the main body. An air purifier to be removed by a unit, wherein a detection unit including an air passage through which external air flows in a negative pressure direction in the main body and a sensor for detecting dust flowing in the air passage is provided. An air purifier, wherein an opening is provided below the suction port, and the dust is detected by a sensor of the detection unit before the suction port sucks the dust. 2. The air purifier according to claim 1, wherein an opening of the detecting portion is provided so as to protrude toward a front side of the main body. 3. A method according to claim 2, wherein the vicinity of the opening of the detecting portion is formed in a concave shape with the opening as a center, and the dust is retained in the concave portion to increase the time for the opening to take in the dust. The air purifier according to claim 1, wherein: 4. A projection is provided at least at an upper portion of an opening of a detection portion so as to block a flow of dust toward a suction port and to retain the dust, thereby increasing a time for the opening to take in dust. The air purifier according to claim 1, wherein: 5. The vicinity of the opening of the detection portion is formed in a concave shape with the opening as a center, and a convex portion is provided at least above the concave portion, so that dust stays in the concave portion and goes to the suction port. Intercepting the flow of dust and retaining the dust,
2. The air cleaner according to claim 1, wherein the opening increases the time for taking in dust.