WO2016067676A1

WO2016067676A1 - Air cleaner

Info

Publication number: WO2016067676A1
Application number: PCT/JP2015/068687
Authority: WO
Inventors: あゆみ斎木; 草太小前; 志賀　彰
Original assignee: 三菱電機株式会社
Priority date: 2014-10-31
Filing date: 2015-06-29
Publication date: 2016-05-06
Also published as: JP6202219B2; JPWO2016067676A1; TW201629403A; TWI610049B

Abstract

The purpose of the present invention is to detect and remove causes of microparticles in a room so as to suppress the generation of microparticles having adverse health effects. This air cleaner is provided with a casing 1, a suction inlet 2, a blowing outlet 3, a blower 4, a cleaning means 5, an odor detection means 6, a light detection means 7, a reactive species detection means 8, a control unit 9, etc. The control unit 9 controls the blower 4 on the basis of the concentration of odors, the presence or absence of light, and the presence or absence of reactive species including ions or radicals, and executes an air cleaning capability-boosting operation as needed. Thus substances which would have led to the generation of microparticles that are difficult to detect with a dust detection means 13 or the like can be removed before such microparticles are generated. Hence, the generation of microparticles having adverse health effects can be efficiently suppressed, and the interior of a room can be kept in a clean condition.

Description

Air cleaner

The present invention relates to an air purifier having a function of purifying sucked air and blowing it out.

As a prior art, for example, an air cleaner as described in Patent Document 1 (Japanese Patent No. 2910627) is known. This air purifier includes a sensor that detects a contamination state of indoor air, a control unit, and a warning unit. The control means has a control sequence for the tobacco mode or pollen mode and other control sequences. The warning means warns the user to select a control sequence for the tobacco mode or the pollen mode when the indoor air contamination state detected by the sensor is due to the tobacco or pollen. This warning operation is performed using display or sound.
On the other hand, as another prior art, an air cleaner as described in Patent Document 2 (Japanese Patent No. 3136659) is also known. This air purifier uses fuzzy reasoning to accurately detect the amount of gas and dust based on the output of the gas sensor and the output of the dust sensor. And the suction force and operation time suitable for each gas quantity are determined finely, and it is comprised so that suitable operation may be implement | achieved.

Japanese Patent No. 2910627 Japanese Patent No. 3136659

The conventional technique described in Patent Document 1 described above has an operation mode corresponding to the indoor contamination state detected by the sensor. However, in this conventional technique, the indoor contamination state is detected by an optical sensor. For example, nano-order fine particles that adversely affect health are used as contaminants until the fine particles aggregate to a detectable size. There is a problem that it is impossible to detect and enter the removal operation.

In the prior art described in Patent Document 2, the suction force, the operation time, etc. are determined based on the outputs of the gas sensor and the dust sensor. However, the generation state of nano-order fine particles cannot be predicted based on the amount of gas and dust. For this reason, even in the prior art described in Patent Document 2, there is a problem that the removal operation cannot be started until the fine particles are aggregated and become a detectable size.

The present invention has been made to solve the above-described problems, and by detecting the cause of the generation of fine particles in the room and performing these removal operations, the generation of fine particles that adversely affect health is suppressed. An object of the present invention is to provide an air purifier capable of keeping the room clean.

An air purifier according to the present invention is configured to generate a detection signal by detecting a gas, a cleaner configured to clean air, a blower configured to supply air to the cleaner, and A gas detector, and a controller configured to receive the detection signal and control at least one of the cleaner and the blower.

According to the present invention, it is possible to execute and stop, for example, an operation for increasing the air cleaning capability by detecting a gas that causes fine particles generated indoors and controlling the cleaner based on the detection result. As a result, the generation cause of the fine particles can be removed before the fine particles that are difficult to detect by the sensor or the like are generated. Therefore, the generation of fine particles that adversely affect health can be efficiently suppressed, and the room can be kept clean.

It is a longitudinal cross-sectional view which shows the air cleaner by Embodiment 1 of this invention. It is a block diagram which shows the control system of the air cleaner by Embodiment 1 of this invention. 5 is a flowchart illustrating an example of control executed by a control device in Embodiment 1 of the present invention. It is a longitudinal cross-sectional view which shows the air cleaner by Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the air cleaner by Embodiment 3 of this invention. In Embodiment 4 of this invention, it is a flowchart which shows an example of the control performed by the control apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing used in this specification, common elements are denoted by the same reference numerals, and redundant description is omitted. Further, the present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention. In addition, the present invention includes all combinations of configurations that can be combined among the configurations described in the following embodiments.

Embodiment 1 FIG.
First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing an air cleaner according to Embodiment 1 of the present invention. Moreover, FIG. 2 is a block diagram which shows the control system of an air cleaner. As shown in these figures, the air cleaner of the present embodiment includes a casing 1, a suction port 2, a blower outlet 3, a blower 4, a cleaning unit 5, an odorous substance detection unit 6, a light detection unit 7, an active species. A detection unit 8, a control device 9, an air passage 10, a dust detection unit 13, and the like are provided. In addition, in FIG. 1, the shape, the structure, and arrangement | positioning of the suction inlet 2 and the cleaning means 5 show an example of the structure which can be implemented, and do not limit this invention.

The casing 1 is formed, for example, in a substantially rectangular square tube shape, and is configured by a tower type case extending in a direction perpendicular to the floor of the room. Housed in the casing 1 are a blower 4, a cleaning means 5, an odorous substance detection means 6, a light detection means 7, an active species detection means 8, a control device 9, an air passage 10, and the like. A suction port 2 for sucking indoor air into the casing 1 is provided on the front surface or side surface of the casing 1. The suction port 2 may be formed as a vertically long opening extending in the vertical direction on the side surface, or may be provided with an opening on the front surface by punching or the like.

On the upper surface of the casing 1, there is provided a substantially rectangular air outlet 3 for blowing out the air cleaned by the cleaning means 5. In the following description, a portion of the side surface portion of the casing 1 that is mainly disposed facing the indoor space is referred to as a front portion, and a portion facing the front portion is referred to as a back portion. Moreover, the direction which the front part of the casing 1 faced is described as the front, the direction corresponding to the left and right sides of the casing 1 as viewed from the front is expressed as the left and right directions, and the vertical direction is also expressed as the up and down direction in some cases. The air purifier is installed on the floor surface at a position close to any wall of the room, for example, and is used with the back surface of the casing 1 facing the wall surface and the front surface of the casing 1 facing the indoor space. Is done.

The blower 4 sucks air from the suction port 2 and blows out the air from the blowout port 3, and is constituted by an electric fan or the like whose rotation speed can be controlled by the control device 9. On the outlet side of the blower 4, an air passage 10 that guides air sent from the blower 4 to the outlet 3 is provided. The air blower 4 constitutes a specific example of the air blowing means in the present embodiment. That is, the blower 4 is configured to blow (supply) room air to the cleaning means 5.

The cleaning means 5 is a cleaner configured to clean the air flowing in the casing 1. The cleaning means 5 is provided between the inlet 2 and the outlet 3. Here, “cleaning” means, for example, removing contaminants composed of particles, smoke, pollen, viruses, molds, fungi, allergens, odorous substances, ions, radicals, etc. floating in the air. Specifically, it means the action of collecting, deactivating, adsorbing and decomposing these contaminants. More specifically, the cleaning means 5 is constituted by a device such as a dust collection filter, a deodorizing filter, a voltage application device or the like, or a combination of these devices. The dust collection filter removes particles and the like in the air, and the deodorization filter captures odorous substances in the air. The pressure application device removes or inactivates contaminants by applying a voltage between the electrodes. The voltage application device may be provided in a part of the opening of the suction port 2 or may be installed in another air passage provided separately from the blower 4 and the air passage 10.

The odorous substance detection means 6 detects the amount (concentration) of gaseous substances present in the room. Examples of such gaseous substances include volatile organic compounds generated from building materials, fatty acids generated from humans and pets, and the like. Further, the gaseous substances include compounds (aromatic fatty acids, amines, etc.) that are generated in daily life and have an aldehyde group or an alcohol group. The odorous substance detection means 6 and the active species detection means 8 constitute a specific example of the gas detector in the present embodiment. The gas detector is configured to detect a gas containing at least one of active species and odorous substances and generate a detection signal.

The light detecting means 7 detects the intensity of light in the room, and is constituted by, for example, a sensor for detecting light by a photodiode or a UV sensor for detecting ultraviolet rays. In the present specification, “light” means light of an arbitrary wavelength having an action of making odorous substances fine, for example, ultraviolet rays. Further, an infrared sensor may be used as the light detection means 7. The infrared sensor can detect this temperature rise as a state where there is incident light from a window when the temperature of an indoor wall, floor, or the like rises due to solar radiation. Further, as the light detection means 7, for example, a sensor that indirectly detects light by detecting a substance generated by a photochemical reaction in the presence of ultraviolet light, visible light, or the like may be used. The light detecting means 7 corresponds to the light detector in the present embodiment. The light detection means 7 is configured to detect light and generate a detection signal. In the present invention, the light detection means 7 may be realized by mounting a clock function on the air purifier and predicting the sunshine time from the date and time.

The active species detection means 8 detects active species present in the indoor air. In this specification, “active species” means ions, ozone, radicals, and the like that are highly reactive to odorous substances. Since ions are electrically biased, they receive a Coulomb force when passing between conductors to which a voltage is applied. The radicals have no electrical bias in the molecules / atoms themselves, but are highly reactive due to having unpaired electrons.

The dust detection means 13 detects indoor dust, and includes, for example, a light emitting unit such as an LED, and a light receiving unit that receives light from the light emitting unit. Indoor air is introduced between the light emitting unit and the light receiving unit. The dust detection means 13 can detect the number of dust particles in the air passing between the light emitting unit and the light receiving unit as the light transmittance or the like.

In the present invention, the odorous substance detecting means 6, the active species detecting means 8 and the dust detecting means 13 constitute a specific example of a predictive detecting means for detecting a causative substance that generates fine particles in the air. The causative substances of the fine particles are, for example, odorous substances, light and active species. That is, nano-order fine particles are generated by the action of light or active species on odorous substances in the air.

The control device 9 is a controller that controls the operation of the air purifier based on the detection result of the prediction detection means, and constitutes a specific example of the control means. The control device 9 includes an arithmetic processing device, an input / output port, and a storage circuit (not shown). As shown in FIG. 2, a sensor system including an odor substance detecting means 6, a light detecting means 7, an active species detecting means 8 and a dust detecting means 13 is connected to the input side of the control device 9. An actuator including the blower 4 and the cleaning means 5 is connected to the output side of the control device 9. The control device 9 receives the detection signals transmitted from the

respective means

6, 7, 8, 13 of the sensor system, and controls the blower 4 and the cleaning means 5 based on the detection signals. Thereby, the control apparatus 9 operates an air cleaner and performs various control. This control includes the basic air cleaning operation described below and an operation for increasing the air cleaning capability.

(Basic air cleaning operation)
During the operation of the air cleaner, the blower 4, dust detection means 13, odorous substance detection means 6, light detection means 7, active species detection means 8 and cleaning means 5 are activated by the control device 9. Thereby, indoor air is sucked into the casing 1 from the suction port 2, and the air is cleaned by the cleaning means 5. Then, the cleaned air passes through the blower 4 and is blown to the air passage 10. The air flowing through the air passage 10 reaches the blowout port 3 and blows out to the outside. At this time, the control device 9 controls the blower 4 based on the amount of contaminants in the air detected by the dust detection means 13 and the odorous substance detection means 6. This basic air cleaning operation is performed until the number of dust particles contained in the air and the concentration of the odorous substance are equal to or lower than a preset reference value. When the number of dust particles and the concentration of the odorous substance are equal to or less than the reference value, the output of the blower 4 is controlled according to the number of particles and the concentration, for example, the output is suppressed.

(Operation to increase air purification capacity)
The operation of increasing the air cleaning capability is to increase the air cleaning capability of the air cleaner as compared to when the operation is not performed. In other words, the cleaning means 5 removes the pollutant and is inactive. This is an operation mode that increases the rate of conversion, decomposition, and adsorption. As described above, the pollutant is composed of particles in the air, smoke, pollen, viruses, molds, fungi, allergens, odorous substances, ions, radicals, photochemical reactants, and the like. In the air cleaning capacity increasing operation, for example, the amount of air passing through the cleaning means 5 may be increased by increasing the number of rotations of the blower 4 and increasing the amount of air sucked into the casing 1. Thereby, the removal / inactivation speed can be increased.

Further, when a voltage application device is mounted on the cleaning means 5, the speed at which contaminants are removed and inactivated by increasing the voltage applied to the voltage application device in the operation of increasing the air cleaning capability. May be increased. Thereby, the air cleaning capability can be increased without increasing the rotational speed of the blower 4. Therefore, it is possible to reduce the sound generated by the increase in the rotational speed of the blower 4 and improve the user's comfort. Furthermore, while increasing the applied voltage of a voltage application device, you may increase the rotation speed of the air blower 4, and may increase the air volume of the air which passes a voltage application device. Thereby, the removal / inactivation speed can be further increased. In addition, a voltage application device may be installed, for example in a part of opening part of the suction inlet 2, a part of the air path 10, or it installs in the other small air blower provided in the air path different from the suction inlet 2. You may do it.

[Specific Processing for Realizing Embodiment 1]
Next, the control of the air cleaner will be described with reference to FIG. FIG. 3 is a flowchart showing an example of control executed by the control device 9 in Embodiment 1 of the present invention. The routine shown in this figure is repeatedly executed when the power of the air purifier is ON, and is stopped when the power is turned OFF.

In the routine shown in FIG. 3, first, in step S100, the concentration of the odorous substance in the room is detected by the odorous substance detection means 6. Subsequently, in step S102, it is determined whether or not the detected density is equal to or higher than a preset first density determination value. The first concentration determination value is set, for example, corresponding to the minimum value of the concentration of the odorous substance that needs to improve the air cleaning ability. That is, when the determination in step S102 is established, the concentration of the odorous substance exceeds the allowable limit. Therefore, it is preferable to increase the air cleaning ability regardless of other conditions. In this case, the process proceeds to step S114, and after performing the air purification capacity increasing operation, the process returns to step S100, and this routine is repeated from the beginning.

If the determination in step S102 is not established, the process proceeds to step S104, where it is determined whether or not the concentration of the odorous substance is equal to or higher than a preset second concentration determination value. The second density determination value is set to a density lower than the first density determination value. The second concentration determination value is preferably set in correspondence with the minimum value of the concentration of the odorous substance that generates fine particles by reacting with light or active species. Therefore, if the determination in step S104 is not established, the process returns to step S100 because light and active species are not present enough to make the odorous substance fine particles and deteriorate the indoor environment.

On the other hand, when the determination in step S104 is established, the concentration of the odorous substance is determined to be less than the first concentration determination value and equal to or higher than the second concentration determination value. This concentration is not so high that the operation for increasing the air cleaning capability is unconditionally required, but is a concentration that causes deterioration of the indoor environment due to the formation of fine particles due to the presence of light or active species. Therefore, in this case, the presence of light and active species is determined by the processing after step S106. As a specific example, first, in step S106, indoor light is detected by the light detection means 7, and in step S108, the presence or absence of light is determined based on the detection result of the light detection means 7.

If the determination in step S108 is established, there is light in the room, so that the process proceeds to step S114, and the air purification capacity increasing operation is executed. If the determination in step S108 is not established, the process proceeds to step S110, where the active species detecting means 8 detects the active species in the room. Subsequently, in step S112, the presence or absence of the active species is determined based on the detection result of the active species detecting means 8. If the determination in step S112 is established, there are active species in the room, so that the process proceeds to step S114, and the air purification capacity increasing operation is executed. On the other hand, if the determination in step S112 is not established, there is no light or active species in the room, and the process returns to step S100.

As described above in detail, according to the present embodiment, the operation of increasing the air cleaning capability is performed based on the detection results of the odorous substance detection means 6, the light detection means 7, and the active species detection means 8 which are prediction detection means. And stop can be controlled. That is, it is possible to detect the cause (for example, odorous substance, light, active species, etc.) that nano-order fine particles are generated indoors, and to remove or invalidate these causes by increasing the air cleaning capability. Moreover, although it is known that an odorous substance will change into an active species by light, the change from an odorous substance to an active species is also suppressed by control using the odorous substance detection means 6 and the light detection means 7. Can do. As described above, according to the present embodiment, the causative substance of the fine particles can be removed before the fine particles difficult to detect by the sensor or the like are generated. Therefore, the generation of nano-order fine particles that adversely affect health can be efficiently suppressed, and the room can be kept clean.

More specifically, in the present embodiment, since the odorous substance detection means 6 is provided, the concentration of the odorous substance that is the main generation source of fine particles can be detected. Then, it is possible to determine whether or not the operation for increasing the air cleaning capability is necessary based on the concentration of the odorous substance. In the present embodiment, since the light detection means 7 and the active species detection means 8 are provided, the detection result of at least one of light and active species is combined with the detection result of the concentration of the odorous substance. Can do. As a result, it is possible to grasp the existence state of light and active species that are the cause of micronization, and more accurately predict the possibility that the odor substance is micronized. Therefore, it is possible to finely control the execution and stop of the air purification capacity increasing operation based on the prediction result.

More specifically, in the present embodiment, when the concentration of the odorous substance is equal to or higher than the first concentration determination value, the air cleaning capacity increase operation is executed. The odorous substance can be efficiently removed by quickly increasing the air cleaning ability. In addition, even if the concentration of the odorous substance is less than the first concentration determination value, if the concentration of the odorous substance is equal to or higher than the second concentration determination value, the odorous substance may become fine particles in the presence of light or active species. . Therefore, in this case, when at least one of light and active species is detected, the air purification capacity increasing operation is executed. As a result, not only the concentration of the odorous substance but also the existence state of light and active species can be reflected in the control, and the operation of increasing the air cleaning capability can be executed accurately. Further, the operation can be controlled in detail based on the first and second concentration determination values, and the air purifying ability according to the environment can be exhibited.

Here, the background and effects of the present invention will be further described. The inventor of the present application conducted an experiment to measure the number of particles with a particle counter for the number of particles with and without sunlight in a room with a ventilation rate of 0.5 times. As a result, when there was no sunshine, the change in the number of particles was little changed, but when there was sunshine, the number of particles having a size of about 0.3 to 1 micron increased. Previously, photochemistry suggested that nitrogen oxides become fine particles, but in recent years, fine particles are produced by the reaction of ions, ozone, radicals, UV, etc. with volatile organic compounds present in the room. Has been reported to produce. In the above experiment, data supporting this phenomenon was obtained. In general, the detection lower limit value of a dust sensor mounted on a home appliance is said to be about 1 micron, and the fine particles generated by the above phenomenon are difficult to detect by the dust sensor. On the other hand, the air cleaner according to the present embodiment can suppress the generation of fine particles of 1 micron or less and can keep the room in a clean state.

In the first embodiment, steps S102 and S114 in FIG. 3 show specific examples of the first control means, and steps S104, S106, S108, S110, S112 and S114 are specific examples of the second control means. Is shown. In addition, the “first density determination value” described in the specification of the present application is not limited to the “first density determination value” described in claim 6, but also the “density concentration” described in

claims

4 and 5. This also corresponds to “determination value”.

Further, in the present invention, the processing in steps S106 and S108 (light detection and determination processing) and the processing in steps S110 and S112 (active species detection and determination processing) shown in FIG. It is not limited to. In other words, in the present invention, the detection and determination processing of active species may be performed first, and then the detection and determination processing of light may be performed, or these two types of processing may be performed in parallel.

In the present invention, whether or not the operation for increasing the air cleaning capability is necessary may be determined based only on the concentration of the odorous substance. In addition, without considering the presence or absence of active species, it may be determined whether or not it is necessary to increase the air cleaning capability based on the concentration of odorous substances and the presence or absence of light, or the air purification may be based only on the presence or absence of light. It may be determined whether or not it is necessary to increase the control capability. Furthermore, it may be determined whether or not the operation for increasing the air cleaning capability is necessary based on the concentration of odorous substances and the presence or absence of active species without considering the presence or absence of light.

In the present invention, the first concentration determination value may be set, for example, corresponding to a concentration of an odorous substance that can be sensed by a person, or may be set corresponding to a concentration at which a person feels uncomfortable. . Further, in the present invention, the air purification capacity increasing operation may be executed and stopped based only on the magnitude relationship between the concentration of the odorous substance and the first concentration determination value without using the second concentration determination value. Good. Further, when the second concentration determination value is not used, for example, when the concentration of the odorous substance is less than the first concentration determination value and at least one of light and active species is detected indoors, It is good also as a structure which raises the air cleaning capability of an air cleaner. Even in this configuration, the presence state of light and active species can be reflected in the control, and the above-described effects can be obtained.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a longitudinal sectional view showing an air cleaner according to Embodiment 2 of the present invention. As shown in this figure, the air cleaner according to the present embodiment has substantially the same configuration as that of the first embodiment, but includes an opening variable mechanism 11, a rotation mechanism 21, and a pedestal 22.

The opening variable mechanism 11 changes the opening area of the air outlet 3 and is formed of, for example, a plate-like member. The end of the opening variable mechanism 11 is attached to the opening of the air outlet 3, the air passage 10, and the like so as to be swingable. The opening variable mechanism 11 is swung in the front-rear direction by the opening driving unit 12, and the opening area of the air outlet 3 changes according to the swing angle. The opening driving unit 12 is driven by the control device 9. The rotating mechanism 21 supports the casing 1 together with the pedestal 22, and is provided between the casing 1 and the pedestal 22. The rotation mechanism 21 is driven by the control device 9 and rotates the casing 1 and the air outlet 3 in the horizontal direction on the base 22.

In the air purification capacity increasing operation, for example, the same control as in the first embodiment (see FIG. 3) is executed. At this time, the control device 9 increases the speed of the air blown out from the air outlet 3 by narrowing the opening area of the air outlet 3 by the opening variable mechanism 11. Thereby, the speed at which room air is cleaned can be increased, and the air cleaning capability can be improved. Further, in the operation of increasing the air cleaning capability, the casing 1 can be directed in the direction in which the detected contaminant can be removed most efficiently by rotating the casing 1 by the rotation mechanism 21. Thereby, the pollutant removal operation can be executed efficiently.

When narrowing the outlet 3 using the opening variable mechanism 11, the flow resistance of the blown air increases and the pressure loss increases. Therefore, it is preferable not to decrease the air volume of the air blown from the outlet 3 by increasing the driving force of the blower 4. Specifically, the control device 9 keeps the air volume of the air blown from the outlet 3 constant by increasing the drive current supplied to the blower 4, for example. According to this control, even when the air outlet 3 becomes narrow and the pressure loss increases, a desired air volume can be stably secured.

In the present embodiment configured as described above, substantially the same operational effects as those of the first embodiment can be obtained. Further, according to the present embodiment, by using the opening variable mechanism 11 and the rotating mechanism 21, the air cleaning efficiency in the operation of increasing the air cleaning capability can be further improved.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a longitudinal sectional view showing an air cleaner according to Embodiment 3 of the present invention. As shown in this figure, the air cleaner according to the present embodiment has substantially the same configuration as that of the first embodiment, and includes the rotation mechanism 21 and the base 22 described in the second embodiment. Furthermore, the air cleaner according to the present embodiment includes blowers 4A and 4B, air passages 10A and 10B, opening variable mechanisms 11A and 11B, and a voltage applying device 51. The blowers 4A and 4B, the air passages 10A and 10B, and the opening variable mechanisms 11A and 11B have the same functions as the blower 4, the air passage 10, and the opening variable mechanism 11, respectively.

In the present embodiment, two air flow paths are provided in parallel in the casing 1. The first air flow path includes the blower 4A, the air passage 10A, and the opening variable mechanism 11A, and the second air flow path includes the voltage application device 51, the blower 4B, the air flow path 10B, and the opening variable mechanism 11B. ing. The blower 4B is arranged on the rear side with respect to the blower 4A. Thereby, a clearance gap can be ensured between the cleaning means 5 and the air blower 4B, and the voltage application device 51 can be installed in this clearance gap.

The voltage application device 51 constitutes at least a part of a cleaner (cleaning means), and includes, for example, a resin casing, and a metal discharge electrode and a counter electrode provided in the casing. For example, a voltage of 4 to 7 kV or −4 to −7 kV is applied to the discharge electrodes, whereby a discharge space is formed between the electrodes. Particles such as viruses, fungi, molds, pollen, allergy-causing substances are inactivated by passing through the discharge space. The odorous substance is decomposed and deodorized by passing through the discharge space.

During the operation of the air cleaner, the fans 4A and 4B, the opening variable mechanisms 11A and 11B, and the voltage application device 51 are driven. Thereby, a part of the air sucked from the suction port 2 passes through the cleaning means 5, the blower 4 A and the air passage 10 A in order, and then blows out from the outlet 3 while being guided by the opening variable mechanism 11 A. The remaining air passes through the cleaning means 5, the voltage application device 51, the blower 4 B, and the air passage 10 B in order, and then blows out from the outlet 3 while being guided by the opening variable mechanism 11 B.

In the air purification capacity increasing operation, the air volume passing through the voltage application device 51 is increased by increasing the air volume of the blower 4B. As a result, decomposition of the odorous substance by the voltage application device 51 can be promoted, and generation of fine particles due to the odorous substance can be suppressed. Further, the air cleaning capability may be improved by increasing the discharge voltage of the voltage application device 51 or increasing the discharge current.

In the present embodiment configured as described above, substantially the same operational effects as those of the first embodiment can be obtained. In addition, according to the present embodiment, by increasing the passing air volume, discharge voltage, discharge current, and the like of the voltage application device 51, it is possible to further improve the air cleaning efficiency in the operation of increasing the air cleaning capability. .

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a flowchart showing an example of control executed by the control device in Embodiment 4 of the present invention. The present embodiment uses the timepiece function provided in the control device 9, and may be applied to any of the air purifiers described in the first to third embodiments.

In the routine shown in FIG. 6, first, in step S200, the current time is confirmed by the clock function of the control device 9. In step S202, it is determined whether or not the set time has come. The set time may be set to a desired time by the user, or may be set as a time that is a desired time before the sunrise time. When determination of step S202 is materialized, it transfers to step S204 and the drive of the air blower 4 is started. As a result, the room air sucked in by the blower 4 reaches the position of the odorous substance detection means 6, and the process proceeds to step S206. On the other hand, if the determination in step S202 is not satisfied, the process returns to step S200 and waits until the determination is satisfied.

Next, in step S206, the odor substance detection means 6 detects the concentration of the odor substance in the air. Subsequently, in step S208, it is determined whether or not the detected density is greater than or equal to a preset density determination value. For example, any one of the first and second density determination values may be used as the density determination value. When determination of step S208 is materialized, it transfers to step S210 and performs air purification capability up driving | operation. On the other hand, if the determination in step S208 is not satisfied, the process returns to step S206 and waits until the determination is satisfied.

In the present embodiment configured as described above, substantially the same operational effects as those of the first embodiment can be obtained. Moreover, according to this Embodiment, an odorous substance can be removed before sunlight enters into a room | chamber interior using the timepiece function of the control apparatus 9. FIG. Thereby, it can suppress that an indoor odor substance reacts with sunlight, and it produces | generates microparticles | fine-particles, for example, can keep a room in a clean state until a user starts activity.

1 casing, 2 inlet, 3 outlet, 4, 4A, 4B blower (air blowing means), 5 cleaning means (cleaner), 6 odor substance detection means (gas detector, prediction detection means), 7 light detection means ( Photodetector, prediction detection means), 8 active species detection means (gas detector, prediction detection means), 9 control device (controller, control means), 10, 10A, 10B air passage, 11, 11A, 11B opening variable mechanism , 12 opening drive unit, 13 dust detection means, 21 rotation mechanism, 22 pedestal, 51 voltage application device (cleaner, cleaning means)

Claims

A cleaner configured to purify the air;
A blower configured to supply air to the cleaner;
A gas detector configured to detect gas and generate a detection signal;
A controller configured to receive the detection signal and control at least one of the cleaner and the blower;
Air purifier with.
A cleaner configured to purify the air;
A blower configured to supply air to the cleaner;
A photodetector configured to detect light and generate a detection signal;
A controller configured to receive the detection signal and control at least one of the cleaner and the blower;
Air purifier with.
The air cleaner according to claim 1, wherein the gas detected by the gas detector includes at least one of active species and odorous substances.
The air cleaner according to claim 2, wherein the light detected by the photodetector includes ultraviolet rays.
Comprising a photodetector configured to detect light and generate a detection signal;
The air cleaner according to claim 1 or 3, wherein the controller controls at least one of the cleaner and the blower based on detection signals of the gas detector and the photodetector.
The controller controls at least one of the cleaner and the blower when the concentration of an odorous substance that is one of the gases detected by the gas detector is equal to or higher than a predetermined concentration determination value. The air cleaner according to any one of claims 1, 3, and 5, wherein the air purifying capability of the air cleaner is increased.
The controller has a concentration of an odorous substance that is one of the gases detected by the gas detector being less than a preset concentration determination value, and among active species and light that are one of the gases. The air according to claim 5, wherein when at least one is detected by the gas detector or the photodetector, at least one of the cleaner and the blower is controlled to increase an air purifying capability of the air cleaner. Cleaner.
A first density determination value set in advance and a second density determination value set to a density lower than the first density determination value;
The controller is
When the concentration of an odorous substance that is one of the gases detected by the gas detector is greater than or equal to the first concentration determination value, at least one of the cleaner and the blower is controlled to control the air cleaner. A function to increase the air purification capacity,
The concentration of the odorous substance is less than the first concentration determination value and greater than or equal to the second concentration determination value, and at least one of active species and light that is one of the gases in the room is the gas. A function of increasing the air purifying ability of the air purifier when detected by the detector or the photodetector;
The air cleaner according to claim 5, comprising:
The air cleaner according to any one of claims 1 to 8, wherein the cleaner has a function of cleaning at least odorous substances.
A blowout port for blowing out air purified by the cleaner;
A rotation mechanism for rotating the air outlet,
The air cleaner according to any one of claims 6 to 8, wherein the controller drives the rotating mechanism to rotate the air outlet when the air purifying capacity of the air purifier is increased.
The cleaner includes a voltage applying device that applies a voltage between the electrodes to clean the air,
The air cleaner according to any one of claims 6 to 8, wherein the controller increases a passing air amount, a discharge voltage, or a discharge current of the voltage application device when the air purifying capacity of the air purifier is increased. Machine.
The air cleaner according to any one of claims 1 to 11, wherein the controller has a clock function and controls the operation of the air cleaner based on the detection signal at a time before sunlight enters the room.