JP2000325723A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner whose use convenience is improved and which can be manufactured at low cost by controlling the sensitivity of sensors of both of a main body and a remote controller of the cleaner by adjusting sensitivity of either one of them. SOLUTION: This air cleaner comprises an air cleaning main body 1 for cleaning air, and a remote controller 50 for remotely controlling operation of the air purification main body 1. In this case both of the air cleaner main body 1 and the remote controller 50 are respectively provided with sensors (pollution sensors 21, 55) for detecting the level of requirement for cleaning, a sensor sensitivity-adjusting parts (sensitivity adjusting switches 22, 27) for adjusting the sensitivity of the respective sensors, and control parts for controlling the sensor sensitivity adjustment of one sensor corresponding to the sensor sensitivity adjusted by the other sensor sensitivity-adjusting part.

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 improvement in automatic operation using a sensor.

[0002]

2. Description of the Related Art A conventional air purifier that can be automatically operated by using a sensor is disclosed in Japanese Patent Publication No. Hei 7-18852 (F24F 11/02).

[0003] This conventional apparatus comprises a human body sensor for detecting the movement of a person in a non-contact manner, an air dirt sensor for detecting dirt due to smoke and reducing gas in the indoor air, and a human body sensor for detecting the movement of the human body sensor. The operation is started by at least one of the detection output by the detection and the detection output by the detection of the predetermined air contamination of the air contamination sensor, and the respective sensors stop detecting both the movement of a person and the predetermined air contamination. The blower whose operation is stopped based on the fact that the blower intensity is adjusted according to the detection output of the air dirt sensor, and the air flow generated by the blower passes through smoke and dust And the like.

Further, Japanese Patent Publication No. 6-105131 (F.
24F 7/007) discloses a device in which a dirt detection element (sensor) is provided in an automatic driving device separate from the main body.

[0005]

However, when a sensor such as that described in Japanese Patent Publication No. Hei 7-18582 is incorporated in the air purifier main body, the movement of a person near the main body and air contamination can be detected. In some cases, movement of a person in a remote place or contamination of air may not be detected.

[0006] Also, as described in Japanese Patent Publication No. 6-105131, when an automatic driving device provided separately from the main body is provided with a dirt sensor, air contamination near the automatic driving device can be detected. Air contamination at a location remote from the device cannot be detected.

Therefore, the inventors of the present application have recently focused on a remote controller used for this type of device, and have taken advantage of the high degree of freedom of installation to provide a sensor on the remote controller together with the main body. It has already been proposed (Japanese Patent Application No. 10-2523)
No. 86, Japanese Patent Application No. 10-255087-255089
issue).

However, in order to provide sensors on both the main body and the remote controller and to make it possible to adjust the sensitivity of each sensor, an independent sensitivity adjustment switch is provided for each sensor, and each sensitivity is separately adjusted. It becomes inconvenient because it has to be done. Further, since a sensitivity adjustment switch is provided for each, the cost is increased.

Accordingly, the present invention has been made to solve such a problem. By adjusting the sensitivity of one sensor, the sensitivity of both the main body and the remote controller can be adjusted. It is an object of the present invention to provide an air purifier capable of improving usability, reducing costs, and the like.

[0010]

To achieve the above object, the present invention comprises an air purifier body for purifying air and a remote controller for remotely operating the air purifier body. In each of the air purifier body and the remote controller, a sensor for detecting a required level for purifying air, a sensor sensitivity adjustment unit for adjusting the sensitivity of each sensor, and adjustment by one of the sensor sensitivity adjustment units. And a control unit for controlling the other sensor sensitivity adjustment in accordance with the sensor sensitivity.

An air purifier body for purifying air and a remote controller for remotely operating the air purifier body are provided. Each of the air purifier body and the remote controller has a required level for purifying air. A sensor sensitivity adjusting unit for adjusting the sensitivity of the sensor; and a sensor sensitivity adjusting unit for controlling the remote controller based on the sensor sensitivity information adjusted by the sensor sensitivity adjusting unit. A control unit that controls information to be transmitted to the air purifier main unit, wherein the air purifier main unit includes a control unit that controls sensor sensitivity adjustment of the main unit based on sensor sensitivity information received from the remote controller. It is characterized by having.

Further, the air purifier includes a main body for purifying air and a remote controller for remotely operating the main body of the air purifier. Each of the main body of the air purifier and the remote controller has a required level for purifying air. And a control unit for controlling the remote controller to transmit a sensor detection level to the air purifier main body when the sensor detection level exceeds a predetermined determination level, and The main body of the purifier has a sensor sensitivity adjustment unit for adjusting the sensitivity of the sensor, and a sensor detection level received from the remote controller while controlling the sensor sensitivity adjustment of the main body based on the sensor sensitivity information adjusted by the sensor sensitivity adjustment unit. And a controller for controlling the sensor sensitivity adjustment.

[0013] Also, a dirt sensor for detecting air dirt such as smoke in the air or reducing gas is provided as the sensor, and the sensor sensitivity adjuster adjusts the sensitivity of the dirt sensor. is there.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

The air purifier of this embodiment comprises an air purifier body 1 and a remote controller 50 as shown in FIG.

The air purifier main body 1 has a detachable front cover 3 having a grill (grid) -shaped intake port 2 formed on almost the entire surface, and a rear case having a grill-shaped exhaust port 4 formed on one side of the upper surface. 5 and an upper case 7 having an operation display unit 6 formed on the front surface
And the outer shell is formed.

Inside the main body 1 of the air purifier, a dust collecting filter is provided inside the front cover 3 for filtering and deodorizing the dust and the smoke and smell of tobacco in the air sucked from the air inlet 2 thereof. A blower fan, such as a motor-driven centrifugal fan, is attached to the rear side of the rear case 5 via a dust collection filter and a fan. Exhaust port 4 on top
It is configured to be discharged from.

A control board on which a control unit such as a microcomputer is mounted is mounted in the upper case 7, and an operation display unit 6, a fan motor, and the like are connected so as to control them. Has become.

The operation display section 6 is provided with operation buttons such as a timer button 11 for setting a timer cut-off time, a manual button 12 for manual operation, an automatic button 13 for automatic operation, and an off button 14. , A timer display lamp 15, an air volume display lamp 16, an operation display lamp 17, a dirt display lamp 18, and the like.

Further, at one corner of the operation display section 6, a dirt sensor 21 composed of, for example, a semiconductor gas sensor for detecting air dirt due to smoke in the room air, reducing gas, etc., and a sensitivity adjustment switch 22 thereof are provided. Also, a human body sensor 23 constituted by a pyroelectric infrared sensor or the like for detecting human motion in a non-contact manner is provided. The remote control 50
A remote control receiving unit 24 for receiving a remote control signal such as an infrared ray transmitted from the remote controller is provided, and thereby, an automatic operation according to a degree of air contamination, a remote operation from the remote controller 50, and the like can be performed. Note that even if the off button 14 is operated to stop the operation, the main body 1 is in a standby state and a remote control signal is accepted.

When using the air purifier body 1,
By operating the manual operation button 12 or the automatic operation button 13 of the operation display unit 6 on the front of the upper case 7 or the similar button provided on the remote controller 50 described below, the control board in the upper case 7 The control unit mounted on the device works and starts operation. When the operation is started, the fan motor is driven to rotate the fan, and the ambient air to be sucked is sucked into the main body 1 from the air inlet 2 formed on almost the entire surface of the front cover 3, and the dust and tobacco are collected by the dust filter. The smoke, odor, etc. are filtered and deodorized, and the purified air is discharged from the exhaust port 4 on the upper surface of the rear case 5.

On the other hand, the remote controller 50 of the present embodiment is provided with a transmission section 51 for transmitting a remote control signal such as infrared rays at the distal end side, like a general remote controller. The operation unit 52 on the hand side has a sensor automatic operation button 53 for automatic sensor operation and a cut-off button 54 for stopping operation.
Is provided. As the sensor, a human body composed of, for example, a dirt sensor 55 composed of, for example, a semiconductor gas sensor or the like, or a pyroelectric infrared sensor for detecting human movement in a non-contact manner, similar to the main body 1 side. A sensor 56 is provided. Further, a sensitivity adjustment switch 57 capable of adjusting the sensitivity of the dirt sensor 55 is provided.

As described above, by providing the human body sensors 23 and 56 together with the dirt sensors 21 and 55, in addition to actual air dirt due to smoking or the like, air dirt due to dust or the like flying up due to movement of a person is detected in advance. As a result, the air in the room can be efficiently and quickly purified.

The air cleaner body 1 and the remote controller 50
The dirt sensors 21 and 55 and the human body sensor 2
With the provision of 3, 56, it is possible to detect the contamination of air near the main body 1 and the movement of a person, and also to detect the contamination of air and the movement of a person away from the main body 1. In addition, since the movement of a person in a place where one of the human body sensors does not act because of being blocked by furniture or the like can be detected by the other human body sensor, the air can be efficiently and quickly purified even in such a room. .

The sensitivity of the human sensors 23 and 56 can be adjusted. However, since the human sensors 23 and 56 detect the presence or absence of movement of a human, the sensitivity adjustment has little meaning. In the embodiment, the dirt sensors 21 and 55 are used.
Only sensitivity adjustment is performed. Further, in the present embodiment, the sensitivity adjustment of the dirt sensors 21 and 55 by the sensitivity adjustment switches 22 and 57 is performed in two steps of low “L” and high “H”.

In the above description, the dirt sensors 21 and 55 and the human body sensors 23 and 56 are provided on the air purifier main body 1 side and the remote control 50 side, respectively. Good.

That is, the dirt sensor needs to be provided for both to detect actual air dirt, but the human body sensor can indirectly detect the possibility of air dirt even from the movement of a person at a distance. Therefore, since it is not necessary to provide them both, it is possible to efficiently and quickly purify the air in the room without increasing the cost by providing the remote controller 50 only on the side of the remote controller 50 having a large degree of freedom in installation.

Further, even when only the dirt sensors 21 and 55 are provided without providing the human body sensor, it is effective because the actual air dirt in the room can be detected. In this case, the cost is further reduced. be able to.

FIG. 2 is a block diagram showing a main configuration of the remote controller 50. As shown in FIG. Since the above-described human body sensor 56 does not perform sensitivity adjustment and is not directly related to the present invention, the following description will be made on the assumption that the human body sensor 56 is not provided for easy understanding.

The remote controller 50 has a built-in control unit 59 composed of a microcomputer or the like.
9, the dirt sensor 55 and the sensitivity adjustment switch 57
And the operation unit 52 are connected, and the transmission unit 51 is connected to the output side.

A dirt sensor 55 is provided in the control section 59 for each sensitivity (low or high) set by the sensitivity adjustment switch 57.
The comparison data for detecting the detection level is stored, and the corresponding comparison data is selected according to the set sensitivity to determine the level of the dirt sensor 55 (in the present embodiment, level 0, level 1 and level 2). Stage). The control unit 59 constantly determines the level of air contamination by comparing the detection data of the contamination sensor 55 with the comparison data. However, in order to avoid the battery consumption of the remote controller 50 without impairing the responsiveness, the control unit 59 determines the sensor sensitivity and the determination. The information is transmitted from the transmission unit 51 only when the changed dirt level is changed. When an input is received from the operation unit 52, a signal corresponding to the input is transmitted from the transmission unit 51.

FIG. 3 is a block diagram showing a configuration of a main part of the air purifier main body 1. As shown in FIG. As described above, since the human body sensor 23 does not perform sensitivity adjustment and is not directly related to the present invention, the following description will be made on the assumption that the human body sensor 23 is not provided for easy understanding. The above-mentioned operation display unit 6 is shown as being divided into an operation unit 6a and a display unit 6b.

The control section 25 mounted on the control board in the above-mentioned upper case 7 is composed of a microcomputer or the like, and the input side thereof is connected to the receiving section 24, the dirt sensor 21, the sensitivity adjustment switch 22, and the operation section 6a. The motor drive unit 26 that drives the fan motor 27 and the display unit 6b are connected to the output side.

The control section 25 stores comparison data for determining the detection level of the main body side dirt sensor 21 for each sensor sensitivity set by the sensitivity adjustment switch 22 and for each sensor sensitivity sent from the remote controller 50. And the remote controller 5 for each sensor sensitivity set by the sensitivity adjustment switch 22.
The comparison data for re-judgment of the dirt level sent from the 0 side is stored, and the corresponding comparison data is selected and used for level judgment.

In the above configuration, when the sensitivity is adjusted on the remote controller 50 side, the sensitivity of the dirt sensor 55 is adjusted by the sensitivity adjustment switch 57 on the remote controller 50 side.
When the sensitivity is changed from high “H” to low “L”, this is recognized by the control unit 59 of the remote controller 50 and the comparison data in the control unit 59 is changed. Send to

In the control section 25 of the main body 1, a remote control 50
When the receiver 24 receives the sensitivity information from the side, the change of the sensitivity (from high “H” to low “L”) is recognized, and regardless of the setting state of the sensitivity adjustment switch 22 on the main body 1, contamination on the main body side is performed. The sensitivity of the dirt sensor 21 is lowered to “L” by changing the comparison data for detecting the detection level of the sensor 21. The determination of the stain level is performed by determining the magnitude of the stain level data value and the comparison data set in the control unit 25 as described above.

In this way, the sensitivity of the dirt sensor 21 on the main body 1 can be adjusted without changing the sensitivity adjustment switch 22 on the main body 1 side, so that the usability is improved and the sensitivity on the main body 1 side is improved. The adjustment switch 22 can be eliminated, and the cost can be reduced.

On the other hand, when adjusting the sensitivity on the main body 1 side,
By adjusting the sensitivity adjustment switch 22 of the main body 1, the comparison data for the main body dirt sensor 21 stored in the control unit 25 of the main body 1 and the dirt level sent from the remote controller 50 are re-determined. Change the comparison data for

At this time, since the comparison data on the remote controller 50 side does not change, the determination data of the dirt level of the dirt sensor 55 transmitted from the remote controller 50 is the same, but this is set in the control unit 25 of the main body 1. By making the determination using the comparison data for re-determination, the sensitivity adjustment on the remote controller 50 side can be performed. In this case, the sensitivity adjustment switch 57 on the remote controller 50 needs to be fixed to the high “H” side. That is, if the remote controller 50 is on the low “L” side, it does not make much sense to set the sensitivity on the high “H” side on the main body 1 side.

With the above arrangement, the sensitivity of the remote controller 50 can be adjusted only by adjusting the sensitivity of the main body 1.
The usability is improved, and the sensitivity adjustment switch 57 on the remote controller 50 can be eliminated, so that the cost can be reduced and the remote controller 50 can be reduced in size.

FIG. 4 is a flowchart showing the operation of the remote controller 50 and the main body 1 when the sensitivity is adjusted from the remote controller 50 side.

The control unit 59 of the remote controller 50 inputs the sensor sensitivity set by the sensitivity adjustment switch 57 and checks whether or not the sensor sensitivity of the remote controller has been changed (processing 101 → decision 102).

If there is a change, the sensor sensitivity of the remote controller 50 is changed by switching the comparison data for level determination in the control section 59, and this sensitivity data is transmitted to the main body 1 (Y in decision 102). → Process 103 → Process 1
04).

When the main body 1 receives the sensitivity data sent from the remote controller 50, the main body 1 switches the comparison data for judging the sensor level in the main body 1 in the control section 25, and thereby the sensor of the dirt sensor 21 in the main body 1 is switched. The sensitivity is changed (process 105).

On the other hand, on the remote controller 50 side, the dirt sensor 5
5 is input, and the level is compared with the comparison data in the control unit 59 to determine the level, and the result of the determination is transmitted to the main body 1 (step 105 → step 10).
6 → Process 107 or N of the judgment 102 → Process 106 → Process 107).

The main body 1 also determines the level by inputting the dirt level of the dirt sensor 21 and comparing the level with the comparison data in the control unit 25. Then, by comparing the dirt level sent from the remote controller 50 with the dirt level determined by the main body 1 side, the larger dirt level is set as the drive level of the fan motor 27 as the overall determination (step 109). ).

Then, it is checked whether or not the drive level obtained above has changed from the previous level (decision 11).
0), if not changed, the drive level of the fan motor 27 is not changed, and the process returns to the first processing 101 as it is and the above is repeated, and if changed, the fan motor 27 is controlled according to the drive level. .

That is, if the drive level is "0",
The air purifying operation is stopped by turning off the fan motor 27 (Y in decision 111 → process 113). If the drive level is "1", the fan motor 27 is driven in a low-speed low-speed operation (N in decision 111 → Y in decision 112 → processing 114). Furthermore, if the drive level is not "1",
That is, if the drive level is “2”, the fan motor 2
7 is driven by high-speed rotation strong operation (N in decision 112 → process 115).

After the change of the operation mode of the fan motor 27 as described above, the process returns to the first process 101, and the above-mentioned process is repeatedly performed, whereby the indoor air contamination is efficiently cleaned in accordance with the sensor sensitivity.

FIG. 5 is a flowchart showing the operation of the main body 1 and the remote controller 50 when the sensitivity is adjusted on the main body 1 side.

The control unit 25 of the main unit 1 inputs the sensor sensitivity set by the sensitivity adjustment switch 22 and checks whether or not the main unit sensor sensitivity has been changed (Process 2).
01 → decision 202).

If there is a change, the comparison data for judging the sensor level on the main body side in the control unit 25 is switched, whereby
By changing the sensor sensitivity of the main body 1 and changing the comparison data for the sensor level judgment on the remote control side,
The sensor sensitivity of the remote controller 50 is changed (Y in the determination 202 → process 203 → process 204).

The remote controller 50 determines the level by inputting the dirt level of the dirt sensor 55 and comparing the level with the comparison data in the control unit 59, and transmits the determination result to the main unit 1 ( Process 204 → Process 205 → Process 206 or N of judgment 202 → Process 205 → Process 20
6).

On the main unit 1 side, the dirt level sent from the remote controller 50 as a level determination result and the control unit 25
By comparing the magnitude with the comparison data for sensor level determination on the remote controller side, the level determination is performed again with the sensitivity set on the main body 1 side (process 207).

Further, by inputting the dirt level of the dirt sensor 21 on the main body 1 side and comparing the magnitude with comparison data for judging the sensor level on the main body side in the control section 25, the main body 1 is obtained.
The level of the dirt sensor 21 on the side is determined (process 20).
8).

Further, by comparing the dirt level on the remote controller side and the dirt level on the main body side determined on the main body 1 side, the larger dirt level is set as the drive level of the fan motor 27 as an overall judgment (step 209). .

Then, it is checked whether or not the drive level obtained above has changed from the previous level (decision 21).
0), if not changed, the drive level of the fan motor 27 is not changed, and the process returns to the first processing 201 as it is, and the above is repeated. If changed, the fan motor 27 is controlled according to the drive level. .

That is, similarly to the above, if the drive level is "0", the fan motor 27 is turned off to stop the air cleaning operation (Y in decision 211 → processing 21).
3). If the drive level is "1", the fan motor 27 is driven in a low-speed low-speed operation (N in decision 211 →
Y in decision 212 → process 214). Further, if the drive level is not "1", that is, if the drive level is "2", the fan motor 27 is driven by the high-speed and strong operation (N in decision 212 → process 215).

After the change of the operation mode of the fan motor 27 as described above, the process returns to the first process 201, and the above-described process is repeatedly performed, so that the indoor air contamination is efficiently cleaned in accordance with the sensor sensitivity.

In the above embodiment, the sensor sensitivity is adjusted in two steps of low "L" and high "H". However, the sensitivity can be adjusted in three steps of low, medium, and high, or can be adjusted continuously. Thus, it may be possible to flexibly cope with a use situation and a user's preference.

In the above embodiment, the sensitivity adjustment of the dirt sensors 21 and 55 constituted by semiconductor gas sensors and the like has been described. However, the sensitivity adjustment of the human body sensors 23 and 56 constituted by pyroelectric infrared sensors and the like is performed. Also applicable to the case,
Furthermore, for example, the present invention can be applied to sensitivity adjustment of a dust sensor that detects the degree of contamination of air using irregular reflection of light due to dust, an ultraviolet (UV) sensor that detects ultraviolet light emitted from a lighter flame, and the like. .

In the above embodiment, the remote controller 50 only transmits and the main unit 1 receives only.
Although the processing is different between the case where the sensitivity adjustment is performed on the side and the case where the sensitivity adjustment is performed on the main body 1 side, if the remote controller 50 and the main body 1 are provided with a transmission / reception function so that data can be exchanged, The sensitivity adjustment can also be performed from the main body 1 by the same processing as when the sensitivity adjustment is performed on the remote controller 50 side.

[0063]

As described above, according to the present invention, each of the air purifier main body and the remote controller has a sensor for detecting a required level for purifying air, and a sensor sensitivity adjuster for adjusting the sensitivity of each sensor. And a control unit that controls the other sensor sensitivity adjustment in accordance with the sensor sensitivity adjusted by one of the sensor sensitivity adjustment units, so that the sensitivity adjustment operation can be performed by either the main unit or the remote control. Since the other sensitivity is also adjusted, the usability is significantly improved.

Each of the air purifier main body and the remote controller has a sensor for detecting a required level for purifying air. The remote controller has a sensor sensitivity adjuster for adjusting the sensitivity of the sensor, and a sensor sensitivity adjuster for adjusting the sensor sensitivity. A control unit that controls the sensor sensitivity adjustment on the remote controller side based on the sensor sensitivity information adjusted by the unit, and controls the sensor sensitivity information to be transmitted to the air purifier main body. With the control unit that controls the sensor sensitivity adjustment on the main unit side based on the sensor sensitivity information received from the remote controller, both sensitivity adjustments can be performed from the remote control side without providing a sensor sensitivity adjustment unit such as a sensitivity adjustment switch on the main unit side. As a result, cost reduction can be achieved.

Conversely, the remote controller is not provided with a sensor sensitivity adjustment unit, and the air purifier main body is provided with a sensor sensitivity adjustment unit and a sensor sensitivity adjustment unit based on the sensor sensitivity information adjusted by the sensor sensitivity adjustment unit. And a controller for controlling the sensor sensitivity adjustment of the sensor detection level received from the remote controller, so that the remote controller does not need to provide a sensor sensitivity adjuster such as a sensitivity adjustment switch. Since the adjustment can be performed, the cost can be reduced and the size of the remote controller can be reduced.

Further, as the sensor, a dirt sensor for detecting air dirt such as smoke in the air or reducing gas is provided, and the sensor sensitivity adjusting section adjusts the sensitivity of the dirt sensor. This is particularly effective because it is highly necessary to adjust the sensitivity in accordance with the degree of contamination of the air by smoke or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an air purifier main body and a remote controller according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main configuration of the remote controller.

FIG. 3 is a block diagram showing a configuration of a main part of the air cleaner body.

FIG. 4 is a flowchart showing an operation example when the sensor sensitivity is adjusted on the remote controller side.

FIG. 5 is a flowchart showing an operation example in the case where the sensor sensitivity is adjusted on the air purifier main body side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier main body 2 Intake port 4 Exhaust port 6 Operation display part 6a Operation part 6b Display part 21,55 Soil sensor 22,57 Sensitivity adjustment switch 24 Receiving part 25,59 Control part 26 Motor drive part 27 Fan motor 50 Remote control 51 Transmission unit 52 Operation unit

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kenji Watanabe 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takeshi Yagi 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Yasushio Kotani 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (Reference) 3L060 AA08 CC13 CC19 DD08 EE45 3L061 BB01 BB03 4D058 NA10 TA02 TA07 UA30

Claims (4)

[Claims] 1. An air purifier main body for purifying air, and a remote controller for remotely operating the air purifier main body. Each of the air purifier main body and the remote controller has a required level for purifying air. A sensor for detecting, a sensor sensitivity adjustment unit for adjusting the sensitivity of each sensor, and a control unit for controlling the other sensor sensitivity adjustment according to the sensor sensitivity adjusted by one of the sensor sensitivity adjustment units. An air purifier characterized in that: 2. An air purifier main body for purifying air, and a remote controller for remotely operating the air purifier main body. Each of the air purifier main body and the remote controller has a required level for purifying air. A sensor sensitivity adjusting unit for adjusting the sensitivity of the sensor; and a sensor sensitivity adjusting unit for controlling the sensor sensitivity of the remote controller based on the sensor sensitivity information adjusted by the sensor sensitivity adjusting unit. A control unit that controls information to be transmitted to the air purifier main body, wherein the air purifier main body includes a control unit that controls sensor sensitivity adjustment on the main body side based on sensor sensitivity information received from the remote controller. An air purifier characterized by comprising: 3. An air purifier main body for purifying air and a remote controller for remotely operating the air purifier main body. Each of the air purifier main body and the remote controller has a required level for purifying air. And a control unit for controlling the remote controller to transmit a sensor detection level to the air purifier main body when the sensor detection level exceeds a predetermined determination level, The main body of the purifier has a sensor sensitivity adjustment unit for adjusting the sensitivity of the sensor, and a sensor detection level received from the remote controller while controlling the sensor sensitivity adjustment of the main body based on the sensor sensitivity information adjusted by the sensor sensitivity adjustment unit. And a control unit for controlling the sensor sensitivity adjustment of the air purifier. 4. The sensor according to claim 1, further comprising a dirt sensor for detecting air dirt such as smoke in the air and reducing gas, and wherein the sensor sensitivity adjuster adjusts the sensitivity of the dirt sensor. An air purifier according to any one of claims 1 to 3.