JP2000202222A - Air purifying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the air purifying machine in which blowing air is also odorless even if odorless air is sucked after a deodorizing member adsorbs more than equilibrium (saturate) adsorption at a sensing threshold value concn. SOLUTION: In the air purifying machine constituted by providing a dust collecting member, a main deodorizing member and a blower 8 at the air passage connecting the suction port and the discharge port formed at a housing 1, the air passage of the discharge port side is divided into the first passage 3a and the second passage 4a by a partition panel 9, and also the changing means 11 for changing the passage to either one side of the first passage 3a or the second passage 4a is provided at the inlet side of the air passage, and the secondary deodorizing member 10 is disposed in the first passage 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier, and more particularly, to an air purifier capable of discharging odorless air without absorbing odor even after inhaling odorless air after the deodorizing member has adsorbed more than the equilibrium adsorption amount. Related to the structure.

[0002]

2. Description of the Related Art A conventional air purifier is shown in FIGS.
And (B), in an air passage 5 connecting the suction port 2 and the discharge port 3 ′ formed in the housing 1, dust collection for collecting dust provided near the suction port 2. Filter 6,
A deodorizing member 7 'provided behind the dust collecting filter 6 for adsorbing odor components such as cigarette smoke and deodorizing air;
a) and a blower 8 driven by the blower 8 is provided. After the room air sucked from the suction port 2 by the blower 8 collects dust and the like mixed in the room air by the dust collection filter 6, The odor is deodorized by the deodorizing member 7 ', and the air is sent out from the discharge port 3' to purify the air in the room.

[0003] However, when the deodorizing member 7 'adsorbs more than the equilibrium (saturated) adsorption amount at the sensing threshold concentration and then inhales odorless or low-concentration air, there is a problem that a bad odor is emitted. There has been a demand for an air purifier that emits odorless air in response to suction of odorless air.

[0004]

In the present invention, in view of the above-mentioned problems, even if the odorless air is sucked in after the deodorizing member has absorbed more than the equilibrium (saturated) adsorption amount at the detection threshold concentration, the blown air can be blown out. It is another object of the present invention to provide an air purifier that is odorless.

[0005]

According to the present invention, a dust collecting member, a main deodorizing member, and a blower are provided in an air passage connecting a suction port and a discharge port formed in a housing. In the air purifier, the air passage on the discharge port side is divided into a first passage and a second passage by a partition plate, and one of the first passage and the second passage is provided on the inlet side of the air passage. Switching means for switching is provided, and a sub-deodorizing member is provided in the first passage.

Further, the switching means is constituted by a damper.

Further, the switching means is switched according to the odor concentration of the intake air.

The odor concentration is detected by detecting a gas sensor provided in the suction port.

When the odor concentration is equal to or lower than the threshold value, the flow path of the discharge air is on the first passage side, and when the odor concentration is equal to or higher than the threshold value, the discharge air flow path is on the second passage side. It has become.

[0010] Further, the collection efficiency of the sub-deodorizing member is higher than that of the main deodorizing member.

The main deodorizing member and the sub-deodorizing member are made of removable activated carbon.

Further, the main deodorizing member and the sub-deodorizing member are constituted by an ion deodorizing filter having conductivity.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 and FIG.
3 (A) and FIG. 3 (B), reference numeral 1 denotes a casing of the air purifier, 2 denotes a suction port formed on one lower side of the casing 1, and 3 denotes a suction port formed on one upper side. The first discharge port 4 is a second discharge port formed on the other upper side, 5 is an air passage connecting the suction port 2 with the first discharge port 3 and the second discharge port 4, and 6 is the air passage 5 A dust collection filter 7 provided near the suction port 2 for collecting dust; a main deodorizer 7 provided behind the dust collection filter 6 for adsorbing odor components such as cigarette smoke and deodorizing air. A member 8 is provided between the main deodorizing member 7 and the first discharge port 3 and the second discharge port 4, and a motor 8 is provided.
This is a blower driven by a.

The first discharge port 3 and the second discharge port 4 are connected to an upper air passage of the housing 1 by a partition plate 9 to form a first passage 3a.
A sub-deodorizing member 10 is provided in an upper part of the casing 1 divided into a first passage and a second passage 4a. A damper 11 is provided below the partition plate 9 as switching means for switching the flow path of the discharge air to either the first passage 3a or the second passage 4a. A gas sensor for detecting the odor concentration of the intake air is provided near the suction port 2, and the damper 11 is switched and controlled by a threshold value of the odor concentration detected by the gas sensor.

When the ammonia concentration of the intake air is 0.2 ppm or more, the damper 11 is set so that the discharge air is discharged from the second discharge port 4 side as shown in FIG. Fig. 3 (B)
As shown in FIG. 5, the damper 11 can be switched so that the discharge air is discharged from the first discharge port 3 side. Further, the main deodorizing member and the sub-deodorizing member are made of detachable activated carbon. Further, the main deodorizing member and the sub deodorizing member are configured by an ion deodorizing filter having conductivity.

In the above configuration, the air sucked into the housing 1 by the blower 8 is collected by the dust collecting filter 6 and then passes through the main deodorizing member 7 to the first discharge port 3 or the second discharge port. It is sent out from the outlet 4 to the room. For example, if the collection rate of the main deodorizing member 7 is 20% and the ammonia concentration of the intake air is 5 ppm, the concentration is reduced to 4 ppm and the air is discharged from the second discharge port 4 side. Indoor air passes through the inside of the air purifier multiple times, resulting in indoor concentrations of 0.2 ppm
When it becomes less than the above, the damper 11 is switched to the first discharge port 3 side.

FIG. 4 shows the adsorption isotherm of the deodorant, and the saturated adsorption amount depends on the odor concentration. Deodorizers treated in large quantities with air at a concentration C2 well above the sensing threshold concentration (0.15 ppm for ammonia) reach saturation at M2. Now, assuming that the deodorant has an adsorption amount of M2 ′ that does not reach saturation, the amount of (M2′−M3) that is lower than the detection threshold concentration C1, that is, the odorless concentration of the intake air of C3, is It will be sent out while gradually adding. For example, the concentration of intake air is 0.1ppm
On the other hand, assuming that the concentration after the main deodorizing agent is 0.6 ppm due to the emission of the main deodorizing member 7, (the odor intensity of ammonia 2; the concentration at which the odor is determined) is the first discharge port. Because it is set on the 3 side, the collection rate of the secondary deodorant
If it is 75%, the concentration of the discharged air will be reduced to 0.15ppm.

With the above configuration, after the main deodorizing member 7 has absorbed more than the equilibrium (saturated) adsorption amount at the sensing threshold concentration,
Even if odorless air is sucked in, the blowout air is also odorless.

[0019]

As described above, according to the present invention, after the main deodorizing member has absorbed more than the equilibrium (saturated) adsorption amount at the detection threshold concentration, even if the odorless air is sucked in, the blown air is also odorless. Machine.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an air purifier according to the present invention.

FIG. 2 is a cross-sectional view of the air purifier according to the present invention.

3 is a cross-sectional view taken along line AA of FIG. 2 according to the present invention, wherein (A) is when the odor concentration is below the threshold, and (B) is when the odor concentration is above the threshold.

FIG. 4 is an explanatory diagram of an adsorption isotherm of a deodorant according to the present invention.

FIG. 5 is an external perspective view of a conventional air cleaner.

6A and 6B are cross-sectional views of an air cleaner according to a conventional example, in which FIG. 6A is a cross-sectional view, and FIG. 6B is a cross-sectional view of FIG.

[Explanation of symbols]

 Reference Signs List 1 housing 2 suction port 3 first discharge port 3a first path 4 second discharge port 4a second path 5 air path 6 dust collecting filter 7 main deodorizing member 8 blower 8a motor 9 partition plate 10 sub deodorizing member 11 switching means ( Damper) 12 Gas sensor

Claims (8)

[Claims] 1. An air purifier provided with a dust collecting member, a main deodorizing member, and a blower in an air passage connecting a suction port and a discharge port formed in a housing, wherein the air passage on the discharge port side is provided. A partitioning plate is used to partition the air passage into a first passage and a second passage, and a switching means for switching to one of the first passage and the second passage is provided on the inlet side of the air passage, and a sub-deodorizing member is provided in the first passage. An air purifier characterized by disposing. 2. The air purifier according to claim 1, wherein said switching means comprises a damper. 3. The air purifier according to claim 1, wherein the switching means is switched according to the odor concentration of the intake air. 4. The method according to claim 1, wherein the odor concentration is detected by detecting a gas sensor provided at the suction port.
An air purifier according to item 1. 5. When the odor concentration is equal to or less than a threshold value, the flow path of the discharge air is set to the first passage side, and when the odor concentration is equal to or more than the threshold value, the flow path of the discharge air is set to the second passage side. The air purifier according to claim 1, 2 or 3, wherein: 6. The air purifier according to claim 1, wherein the collection efficiency of the secondary deodorizing member is higher than that of the main deodorizing member. 7. The air purifier according to claim 1, wherein the main deodorizing member and the sub deodorizing member are made of detachable activated carbon. 8. The air purifier according to claim 1, wherein the main deodorizing member and the sub-deodorizing member comprise an ion deodorizing filter having conductivity.