TW201629403A - Air purifier - Google Patents

Abstract

Production of fine particles having a negative impact on health is reduced by. detecting a cause of production of fine particles in a room and performing a removing operation thereof. An air purifier includes a casing 1, an inlet 2, an outlet 3, a blower 4, purification means 5, odor material detection means 6, light detection means 7, active species detection means 8, a control device 9, or the like. The control device 9 controls the blower 4 based on a concentration of an odor material, presence or absence of light, and presence or absence of active species of ions or radicals, and performs an operation for increasing air purification capability as required. This allows a causative agent of fine particles to be removed in a stage before production of fine particles that are difficult to be detected by dust detection means 13 or the like. Thus, production of fine particles having a negative impact on health can be efficiently reduced, and a room can be kept in a clean state.

Description

Air purifier

The present invention relates to an air cleaner which cleans inhaled air and has a blowing function.

An air cleaner described in, for example, Patent Document 1 (Japanese Patent No. 2910627) is known. The air cleaner includes a sensor, a control means, and a warning means for detecting a contamination state of the indoor air. The control means has a control order for the cigarette mode or the pollen mode, and other control sequences. Further, the warning means warns the user in the control sequence for selecting the cigarette mode or the pollen mode in the case where the pollution state of the indoor air detected by the sensor is caused by cigarettes or pollen. This warning action is implemented using display or sound.

On the other hand, an air cleaner described in, for example, Patent Document 2 (Japanese Patent No. 3136659) is known. This air purifier detects the amount of gas and dust with high precision based on the output of the gas sensor and the output of the dust sensor by using fuzzy inference. Further, it is configured to finely determine the suction force and the operation time suitable for each gas amount to achieve an appropriate operation.

[Prior patent documents] [Patent Literature]

Patent Document 1: Japanese Patent No. 2910627

Patent Document 2: Japanese Patent No. 3136659

The conventional technique described in Patent Document 1 described above includes an operation mode corresponding to the state of contamination in the room detected by the sensor. However, in this prior art, since the contamination state in the room is detected by the optical sensor, the nano-sized microparticles having adverse effects on health, for example, have a size that is condensed to a detectable size and cannot be detected. It becomes a pollutant and enters the problem of removing the operation.

Further, in the conventional technique described in Patent Document 2, the suction force, the operation time, and the like are determined based on the gas sensor and the dust sensor. However, the state of generation of nano-sized particles cannot be predicted based on the amount of gas and dust. Therefore, the conventional technique described in Patent Document 2 also has a problem that the fine particles are aggregated to a detectable size and cannot be removed from the operation.

The present invention has been made in order to solve the problems as described above, and an object of the invention is to provide an air cleaner which detects a cause of generation of fine particles in a room and performs the removal operation of these causes. It can suppress the generation of microparticles that have an adverse effect on health, while keeping the room clean.

The air cleaner of the present invention comprises: a cleaner configured to clean air; a blower configured to supply air to the cleaner; and a gas detector configured to detect a gas and generate a detection signal; and control The device is configured to receive the detection signal and control at least one of the cleaner and the blower.

According to the present invention, the gas which is a cause of generation of fine particles in the room is detected, and the cleaner is controlled based on the detection result, whereby the operation for improving the air purification performance can be performed and stopped, for example. As a result, the cause of the microparticles can be removed at a stage before the generation of the hard-to-detect microparticles such as a sensor. Therefore, it is possible to efficiently suppress the generation of fine particles which have an adverse effect on health, and to maintain the indoors in a clean state.

1‧‧‧Shell

2‧‧‧Inhalation

3‧‧‧Blowing out

4, 4A, 4B‧‧‧ blower (air supply means)

5‧‧‧Clean purification means (cleaner)

6‧‧‧Means for detecting odorous substances (gas detection means, predictive detection means)

7‧‧‧Photodetection means (photodetector, predictive detection means)

8‧‧‧ means for detecting active species (gas detection means, predictive detection means)

9‧‧‧Control device (controller, control means)

10, 10A, 10B‧‧‧ Wind Road

11, 11A, 11B‧‧‧ opening adjustable mechanism

12‧‧‧Open drive department

13‧‧‧Dust detection means

21‧‧‧Rotating mechanism

22‧‧‧Base

51‧‧‧Voltage application device (cleaner, cleaning means)

Fig. 1 is a longitudinal sectional view showing an air cleaner according to a first embodiment of the present invention.

Fig. 2 is a block diagram showing a control system of an air cleaner according to the first embodiment of the present invention.

Fig. 3 is a flow chart showing an example of control executed by a control device in the first embodiment of the present invention.

Fig. 4 is a longitudinal sectional view showing an air cleaner according to a second embodiment of the present invention.

Fig. 5 is a longitudinal sectional view showing an air cleaner according to a third embodiment of the present invention.

Fig. 6 is a flow chart showing an example of control executed by the control device in the fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are given to the same elements in the drawings, and the duplicated description is omitted. The present invention is not limited to the following embodiments, and various modifications may be made without departing from the spirit and scope of the invention. Further, the present invention includes all combinations of configurations that can be combined in the configurations shown in the following embodiments.

First embodiment

First, a first embodiment of the present invention will be described with reference to Figs. 1 to 3 . Fig. 1 is a longitudinal sectional view showing an air cleaner according to a first embodiment of the present invention. Moreover, Fig. 2 is a view showing the configuration of a control system of the air cleaner. As shown in these figures, the air cleaner of the present embodiment includes a casing 1, a suction port 2, an air outlet 3, a blower 4, a cleaning means 5, an odor detecting means 6, a light detecting means 7, and an active species detecting means 8. The control device 9, the air passage 10, the dust detecting means 13, and the like. In addition, in the first drawing, the shape, configuration, and arrangement of the suction port 2 and the cleaning means 5 indicate an example of a configuration that can be implemented, and the present invention is not limited thereto.

The outer casing 1 is formed, for example, in the shape of a square having a substantially square shape, and is constituted by a tower type box extending in a direction perpendicular to the floor surface of the room. Inside the casing 1, the blower 4, the cleaning means 5, the odor detecting means 6, the light detecting means 7, the active species detecting means 8, the control means 9, the air passage 10, and the like are housed. The front or side portion of the outer casing 1 is provided in the suction port 2 for drawing air in the room into the outer casing 1. The suction port 2 may be formed in the side surface portion as a vertically long opening extending in the vertical direction, or may be provided in the front portion by punching or the like.

On the upper surface portion of the outer casing 1, a substantially square-shaped air outlet 3 in which the air outlet has been cleaned by the cleaning means 5 is provided. Further, in the following description, a portion mainly disposed to face the space in the room in the side surface portion of the outer casing 1 is expressed as a front portion, and a portion facing the front portion is expressed as a back portion. Further, the direction in which the front portion of the outer casing 1 faces is expressed as the front side, and the direction corresponding to the left and right sides of the outer casing 1 as viewed from the front is expressed as the left-right direction, and the vertical direction is expressed as the vertical direction depending on the situation. The air cleaner is installed on the floor surface at a position close to any one of the walls of the room, and is used in a state where the rear surface portion of the outer casing 1 faces the wall surface and the front portion of the outer casing 1 faces the space in the room.

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

The cleaning means 5 is configured such that the air flowing in the casing 1 becomes a clean cleaner. The cleaning means 5 is provided between the suction port 2 and the air outlet 3. Here, the purge system means removing pollutants composed of particles, smoke, pollen, viruses, molds, bacteria, allergens, odor substances, ions, radicals, etc. floating in the air, more specifically, , means the act of collecting or inactivating, or adsorbing or decomposing, these pollutants. Specifically, the cleaning means 5 is constituted by a machine such as a dust collecting filter, a deodorizing filter, a voltage applying device, or the like, or a combination of these machines. Dust filter removes air In the case of particles, etc., the deodorizing filter collects odor substances in the air. Further, the voltage application device removes or deactivates the contaminant 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 provided in the blower 4 and other air paths different from the air passage 10.

The odor substance detecting means 6 detects the amount (concentration) of the gaseous substance present in the room. Examples of such a gaseous substance include volatile organic compounds produced from building materials, fatty acids produced from humans and cockroaches, and the like. Further, the gaseous substance also includes a compound having an aldehyde group or an alcohol group (aromatic fatty acid, amine, etc.). Further, the odor substance detecting means 6 and the active species detecting means 8 constitute a specific example of the gas detector of the present embodiment. The gas detector is configured to detect a gas containing at least one of an active species and an odor substance, and generate a detection signal.

The photodetecting means 7 detects the intensity of the light in the room, and is composed of, for example, a sensor that detects light by a photodiode or a UV sensor that detects ultraviolet rays. Further, in the present specification, "light" means, for example, light having an arbitrary wavelength which causes an odor substance to become a fine particle as in the case of ultraviolet rays. Further, as the light detecting means 7, an infrared sensor can also be used. In the infrared sensor, when the temperature of the wall, the floor, or the like in the room rises due to the sunlight, the temperature rise can be detected as a state in which the light from the window is incident. Further, as the photodetecting means 7, a sensor that indirectly detects light by detecting a substance generated by a photochemical reaction in the presence of, for example, ultraviolet rays or visible light can be used. Further, the photodetecting means 7 corresponds to the photodetector of the present embodiment. The light detecting means 7 is configured to detect light and generate a detection signal. Further, in the present invention, it is also possible to predict the sunshine from the date and time and the time by mounting the clock function on the air cleaner. Thereby, the light detecting means 7 is realized.

The active species detecting means 8 detects active species present in the air in the room. In addition, in the present specification, "active species" means ions, ozone, radicals, and the like which have high reactivity with odor substances and the like. Since the ion system is electrically biased, it undergoes a Coulomb force when passing between conductors to which a voltage has been applied. The radical is electrolessly biased in the molecule and the atom itself, but since it has unpaired electrons, the reactivity becomes high.

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

In the present invention, the odor 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 which generates fine particles in the air. The caustic substances of the microparticles are, for example, odorous substances, light, and active species. That is, nanometer-sized microparticles are produced by the action of light or active species on the odorous substance in the air.

The control device 9 is a controller that controls the operation of the air cleaner based on the detection result of the predictive detecting means, and constitutes a specific example of the control means. The control device 9 includes an arithmetic processing unit (not shown), an input/output port, and a memory circuit. On the input side of the control device 9, as shown in Fig. 2, a sensor system including the odor substance detecting means 6, the light detecting means 7, the active species detecting means 8, and the dust detecting means 13 is connected. An actuator including a blower 4, a cleaning means 5, and the like is connected to the output side of the control device 9. Control device 9 receives from The detection signals transmitted by the means 6, 7, 8, and 13 of the sensor system control the blower 4 and the cleaning means 5 based on the detection signals. Thereby, the control device 9 operates the air cleaner and performs various controls. The control here includes the following basic air cleaning operation and air cleaning performance improvement operation.

(basic air clean action)

At the time of the operation of the air cleaner, the blower 4, the dust detecting means 13, the odor detecting means 6, the light detecting means 7, the active species detecting means 8, and the cleaning means 5 are activated by the control means 9. Thereby, the indoor air is sucked into the inside of the casing 1 from the suction port 2, and the air is cleaned by the cleaning means 5. Then, the air that has become clean is sent to the air passage 10 through the blower 4. The air flowing through the air passage 10 reaches the air outlet 3 and is blown to the outside. At this time, the control device 9 controls the blower 4 based on the amount of the pollutants in the air detected by the dust detecting means 13 and the odor detecting means 6. This basic air cleaning operation is performed until the number of particles of dust contained in the air and the concentration of the odorous substance become below a predetermined reference value. In addition, when the number of dust particles and the concentration of the odor substance become equal to or lower than the reference value, the output of the blower 4 is controlled so as to correspond to the number and concentration of the particles, and for example, the output is suppressed.

(Air purification performance improves operation)

The air purification performance improvement operation system improves the air purification performance of the air cleaner compared to when the operation is not performed, in other words, the removal of the pollutants by the purification means 5, the loss of activity, decomposition, and adsorption. The mode of operation of the speed. The pollutants are as shown above, from particles in the air, smoke, pollen, viruses, molds, bacteria, allergens, odorous substances, ions, and self. It consists of a base, a photochemical reactant, and the like. In the air purification performance improving operation, for example, the number of revolutions of the blower 4 can be increased, and the amount of air adsorbed inside the outer casing 1 can be increased, whereby the amount of air passing through the cleaning and purifying means 5 can be increased. Thereby, the speed of removal and loss of activity can be made high.

Further, when the voltage application device is mounted on the cleaning and purifying means 5, the air cleaning performance can be improved, and the voltage applied to the voltage application device can be increased to increase the rate at which the contaminant is removed and the activity is deactivated. Thereby, the air cleaning performance can be improved without increasing the number of revolutions of the blower 4. Therefore, the noise generated by the increase in the rotational speed of the blower 4 can be reduced, and the comfort of the user can be improved. Further, by increasing the applied voltage of the voltage applying device and increasing the number of revolutions of the blower 4, the amount of air passing through the voltage applying means can be increased. Thereby, the speed of removal and loss of activity can be increased. Further, the voltage application device may be provided, for example, in a part of the opening of the suction port 2 or a part of the air passage 10, or may be provided in another small air blower provided in an air path different from the suction port 2.

[To achieve the specific processing of the first embodiment]

Next, the control of the air cleaner will be described with reference to Fig. 3. Fig. 3 is a flowchart showing an example of control executed by the control device 9 in the first embodiment of the present invention. The illustrated routine is repeatedly executed when the power of the air cleaner is ON, and is stopped when the power is turned OFF.

In the routine shown in Fig. 3, first, in step S100, the odorous substance detecting means 6 detects the concentration of the odorous substance in the room. Next, in step S102, it is determined whether or not the detected concentration is equal to or greater than the preset first concentration determination value. The first concentration determination value is set to correspond to, for example, improving air purification The minimum concentration of the odorous substance required for performance. In other words, in the case where the determination in step S102 is established, since the concentration of the odor substance exceeds the allowable limit, it is preferable to improve the air purification performance regardless of other conditions. In this case, the process proceeds to step S114, and after the air cleaning performance improvement operation is executed, the process returns to step S100, and the routine is repeated from the beginning.

When the determination in step S102 is not satisfied, the process proceeds to step S104, and it is determined whether or not the detected concentration is equal to or greater than the preset second concentration determination value. The second concentration determination value is set to a lower concentration than the first concentration determination value. Further, the second concentration determination value is set to be preferably a minimum value corresponding to the concentration of the odorous substance generated by the fine particles generated by the reaction with the light or the active species. Therefore, in the case where the determination in the step S104 is not satisfied, even if the light and the active species are present, the degree of deterioration of the indoor environment does not occur because the odorous substance becomes fine particles, and therefore the process returns to step S100.

On the other hand, when the determination in step S104 is satisfied, it is determined that the concentration of the odor substance is less than the first concentration determination value and the second concentration determination value is equal to or higher than the second concentration determination value. This concentration is not as high as unconditionally required for the degree of improvement of the air purification performance, but is a concentration which becomes a fine particle due to the presence of light and active species and deteriorates the indoor environment. Therefore, in this case, the presence or absence of light and active species is determined by the processing after step S106. List specific examples. First, in step S106, after the light detecting means 7 detects the light in the room, in step S108, based on the detection result of the light detecting means 7, the presence or absence of light is determined.

In the case where the determination in step S108 is established, since the indoor light is present, the process proceeds to step S114, and the air cleaning performance improving operation is executed. Moreover, if the determination in step S108 is not satisfied, the process proceeds to step S110, and the active material is borrowed. The detection means 8 detects the active species in the room. Next, in step S112, based on the detection result of the active species detecting means 8, the presence or absence of the active species is determined. In the case where the determination in step S112 is established, since the indoor active species exists, the process proceeds to step S114, and the air cleaning performance improving operation is performed. On the other hand, in the case where the determination in step S112 is not established, since the light and the active species do not exist, the process returns to step S100.

As described in the above, according to the present embodiment, the air cleaning performance improvement operation can be controlled based on the detection results of the odor detecting means 6, the light detecting means 7, and the active species detecting means 8 which are the predictive detecting means. Execute and stop. That is, it is possible to detect a cause (for example, an odorous substance, a light, an active species, and the like) which generates nano-sized particles indoors, and removes these causes or makes them invalid by the air purification performance improving operation. Further, it is known that the odorous substance is changed into an active species by light, but by controlling the odorous substance detecting means 6 and the photodetecting means 7, it is possible to suppress the change from the odorous substance to the active species. According to this embodiment, according to the present embodiment, the cause of the microparticles can be removed at a stage before the generation of the microparticles which are difficult to detect, such as a sensor. Therefore, it is possible to efficiently suppress the generation of micron-sized particles having adverse effects on health, and to maintain the indoors in a clean state.

Specifically, in the present embodiment, since the odor substance detecting means 6 is provided, the concentration of the odor substance which is the main source of the fine particles can be detected. Further, it is possible to determine whether or not the air purification performance improvement operation is required based on the concentration of the odor substance or the like. Further, in the present embodiment, since the photodetecting means 7 and the active species detecting means 8 are included, the detection result of the concentration of the odorous substance can be combined with the detection result of at least one of the active species. By this, Mastering is the cause of the micro-particles of light and the presence of active species, and more accurately predicts the possibility of odorous substances becoming micro-particles. Therefore, according to the prediction result, the execution and stop of the air purification performance improvement operation can be finely controlled.

More specifically, in the present embodiment, when the concentration of the odor substance is equal to or higher than the first concentration determination value, the air purification performance improving operation is performed, so that the amount of odorous substances in the room can be quickly increased. The air purifying performance is improved and the odorous substance is removed efficiently. In addition, even if the concentration of the odor substance is less than the first concentration determination value and the second concentration determination value is equal to or higher than the second concentration determination value, there is a possibility that the odor substance becomes fine particles in the presence of light or an active species. Therefore, in this case, the air purification performance improving operation is performed at the time point when at least one of the light and the active species is detected. Thereby, not only the concentration of the odorous substance but also the state of existence of the light and the active species can be reflected to the control, and the air purification performance improving operation can be performed correctly. Further, the operation can be carefully controlled based on the first and second concentration determination values, and the air purification performance in response to the environment can be exerted.

Here, the background and effects of the present invention will be further described. The present inventors conducted an experiment of measuring the number of particles by a particle counter in the case of the case where there is sunshine in the room where the ventilation rate is 0.5 times and the number of particles in the absence. As a result, although the change in the number of particles is small in the case of no sunshine, in the case of sunshine, the number of particles having a size of about 0.3 to 1 μm increases. In the past, it has been suggested that nitrogen oxides become fine particles due to photochemistry. However, in recent years, it has been reported that organic compounds which are volatile in the room are generated by the reaction of ions, ozone, radicals, UV, and the like. In this experiment, information confirming this phenomenon was obtained. Generally, the detection lower limit value of the dust sensor mounted on the home appliance is about 1 micrometer, because The microparticles generated by the phenomenon are difficult to detect by the dust sensor. In contrast, the air cleaner of the present embodiment can suppress the generation of fine particles of 1 μm or less and maintain the indoors in a clean state.

Further, in the first embodiment, steps S102 and S114 in Fig. 3 show specific examples of the first control means. Steps S104, S106, S108, S110, S112, and S114 indicate specific examples of the second control means. In addition, the "first concentration determination value" described in this patent specification is not only the "first concentration determination value" described in item 6 of the patent application scope, but also corresponds to items 4 and 5 of the patent application scope. The "concentration determination value" described.

Further, in the present invention, the processes (light detection and determination processing) of steps S106 and S108 and the processes (detection and determination processing of active species) of steps S110 and S112 shown in FIG. 3 are not limited to the third. The order shown in the figure. That is, in the present invention, the detection and determination processing of the active species may be performed first, and then the detection and determination processing of the light may be performed, or both of the processing may be performed in parallel.

Further, in the present invention, it is also possible to determine whether or not the air purification performance improving operation is required based only on the concentration of the odor substance. Further, regardless of the presence or absence of the active species, it is possible to determine whether or not the air purification performance is required to be improved depending on the concentration of the odorant substance and the presence or absence of light. Further, it is possible to determine whether or not the air purification performance improvement operation is required depending on the concentration of the odor substance and the presence or absence of the active species regardless of the presence or absence of light.

Further, in the present invention, the first concentration determination value may be set to correspond to, for example, the concentration of the odorous substance that the human can feel, or may be set to correspond to a concentration that the person feels uncomfortable. Further, in the present invention, the relationship between the concentration of the odorous substance and the determination value of the first concentration may be used instead of using the second concentration determination value. To perform and stop the air purification performance improvement operation. In addition, when the second concentration determination value is not used, for example, when the concentration of the odor substance is less than the first concentration determination value, and at least one of the light and the active species is detected indoors, the air cleaner may be used. The composition of the air purification performance. In this configuration, the presence of light and the active species can also be reflected to control, and the above effects can be obtained.

Second embodiment

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

The opening adjustable mechanism 11 changes the opening area of the air outlet 3, for example, by a plate member. The end of the opening adjustable mechanism 11 is swingably attached to, for example, the opening of the air outlet 3, the air passage 10, and the like. The opening adjustable mechanism 11 is swung in the front-rear direction by the opening driving portion 12, and the opening area of the air outlet 3 changes in accordance with the swing angle. The opening drive unit 12 is driven by the control unit 9. The rotating mechanism 21 supports the outer casing 1 together with the base 22 and is disposed between the outer casing 1 and the base 22. The rotation mechanism 21 is driven by the control device 9, and the outer casing 1 and the air outlet 3 are rotated in the horizontal direction on the base 22.

In the air purification performance improvement operation, for example, the same control as in the first embodiment is performed (see FIG. 3). At this time, the control device 9 increases the opening area of the air outlet 3 by the opening adjustment mechanism 11, thereby increasing the speed of the air blown from the air outlet 3. Thereby, the indoor air can be turned into clear The net speed while improving the air purification performance. Further, the air cleaning performance is improved, and the outer casing 1 is rotated by the rotating mechanism 21, whereby the outer casing 1 can be oriented in the direction in which the detected pollutants can be removed with the utmost efficiency. Thereby, the removal operation of the pollutants can be performed efficiently.

When the air outlet 3 is narrowed by using the opening adjustable mechanism 11, the flow path resistance of the blown air is increased, and the pressure loss is increased. Therefore, by increasing the driving force of the blower 4, it is preferable to prevent the amount of air blown from the air outlet 3 from decreasing. Specifically, the control device 9 maintains the amount of air blown from the air outlet 3 by a predetermined amount, for example, by increasing the drive current supplied to the blower 4. According to this control, even when the air outlet 3 is narrowed and the pressure loss is increased, the required air volume can be stably ensured.

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 adjustment mechanism 11 and the rotation mechanism 21, it is possible to further improve the cleaning effect of the air which is improved in the air purification performance.

Third embodiment

Next, a third embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is a longitudinal sectional view showing an air cleaner according to a third embodiment of the present invention. As shown in Fig. 5, the air cleaner of the present embodiment has substantially the same configuration as that of the first embodiment, and includes the rotation mechanism 21 and the base 22 according to the second embodiment. Further, the air cleaner of the present embodiment includes blowers 4A and 4B, air passages 10A and 10B, opening adjustment mechanisms 11A and 11B, and voltage application device 51. In addition, the blowers 4A, 4B, the air passages 10A, 10B and the opening adjustable mechanisms 11A, 11B have a blower 4, an air passage 10 and an opening, respectively. The mechanism 11 has the same function.

In the present embodiment, two air flow paths are provided in parallel with each other in the casing 1. The first air flow path includes a blower 4A, an air passage 10A, and an opening adjustable mechanism 11A. The second air flow path includes a blower 4B, an air passage 10B, and an opening adjustable mechanism 11B. The blower 4B is disposed on the rear side of the blower 4A. Thereby, a gap is ensured between the cleaning means 5 and the blower 4B, and the voltage application means 51 can be provided in this gap.

The voltage application device 51 constitutes at least a part of a cleaner (cleaning means), and includes, for example, a resin case and a metal discharge electrode and a counter electrode provided in the case. A voltage of, for example, 4 to 7 kV or -4 to -7 kV is applied to the discharge electrode, whereby a discharge space is formed between the electrodes. Particles of viruses, bacteria, molds, pollen, allergens, and the like are decomposed and deodorized by passing through the discharge space.

At the time of the operation of the air cleaner, the blowers 4A, 4B, the opening adjustable mechanisms 11A, 11B, and the voltage applying means 51 are driven. As a result, a part of the air taken in from the suction port 2 passes through the cleaning means 5, the blower 4A, and the air passage 10A in this order, and is blown out from the air outlet 3 while being guided by the opening adjustable mechanism 11A. The remaining air passes through the cleaning means 5, the voltage applying means 51, the blower 4B, and the air passage 10B in this order, and is blown out from the air outlet 3 while being guided by the opening adjustable mechanism 11B.

In the air purifying performance improvement operation, the air volume passing through the voltage applying device 51 is increased by increasing the air volume of the blower 4B. As a result, the decomposition of the odorous substance by the voltage application device 51 is promoted, and the generation of the fine particles due to the odorous substance can be suppressed. Also, by placing the voltage applying device 51 The electric voltage is increased or the discharge current is increased to improve the air purification performance.

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 increasing the air flow rate, the discharge voltage, the discharge current, and the like of the voltage application device 51, it is possible to further improve the cleaning efficiency of the air in the air purification performance improving operation.

Fourth embodiment

Next, a fourth embodiment of the present invention will be described with reference to Fig. 6. Fig. 6 is a flow chart showing an example of control executed by the control device in the fourth embodiment of the present invention. This embodiment is also applicable to any of the air cleaners described in the first to third embodiments described above, using the clock function of the control device 9.

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 elapsed. In addition, the setting time may be set by the user to a desired time, or may be set to a time that is earlier than the sunrise time. When the determination in step S202 is established, the process proceeds to step S204, and the driving of the blower 4 is started. As a result, since the indoor air taken in by the borrowing fan 4 also reaches the position of the odor substance detecting means 6, the process goes 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 established.

Then, in step S206, the odor substance detecting means 6 detects the concentration of the odor substance in the air. Next, in step S208, it is determined whether the detected concentration is equal to or greater than the preset concentration determination value. Further, as the concentration determination value, for example, any one of the first and second concentration determination values may be used. Judgment value. When the determination in step S208 is established, the process proceeds to step S210, and the air cleaning performance improving operation is executed. 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 established.

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, the odorous substance can be removed before the sunlight enters the room by the clock function of the control device 9. Thereby, it is possible to suppress the generation of fine particles by reacting the odorous substance in the room with sunlight, and to set the room to a clean state in advance, for example, until the user starts the activity.

1‧‧‧Shell

2‧‧‧Inhalation

3‧‧‧Blowing out

4‧‧‧Air blower (air supply means)

5‧‧‧Clean purification means (cleaner)

6‧‧‧Means for detecting odorous substances (gas detection means, predictive detection means)

7‧‧‧Photodetection means (photodetector, predictive detection means)

8‧‧‧ means for detecting active species (gas detection means, predictive detection means)

10‧‧‧ Wind Road

13‧‧‧Dust detection means

Claims (12)

An air cleaner comprising: a cleaner configured to clean air; a blower configured to supply air to the cleaner; a gas detector configured to detect a gas and generate a detection signal; and a controller The system is configured to receive the detection signal and control at least one of the cleaner and the blower. An air cleaner comprising: a cleaner configured to clean air; a blower configured to supply air to the cleaner; a photodetector configured to detect light and generate a detection signal; and a controller And configured to receive the detection signal and control at least one of the cleaner and the blower. The air purifier of claim 1, wherein the gas system detects at least one of an active species and an odorous substance. An air purifier as claimed in claim 2, wherein the light detected by the optical device comprises ultraviolet light. An air cleaner according to claim 1 or 3, wherein a light detector configured to detect light and generate a detection signal is provided; and the controller controls the cleaning based on the detection signals of the gas detector and the photodetector At least one of the device and the blower. An air cleaner according to claim 1 or 3, wherein the controller is an odor substance which is one of the gases detected by the gas detector When the concentration is equal to or greater than the predetermined concentration determination value, at least one of the cleaner and the blower is controlled to improve the air purification performance of the air cleaner. The air purifier of claim 5, wherein the controller is that the concentration of the odor substance which is one of the gases detected by the gas detector is less than the preset concentration determination value, and When the gas detector or the photodetector detects at least one of the active species and the light of the gas, at least one of the cleaner and the blower is controlled to improve the air purification performance of the air cleaner. An air cleaner according to claim 5, wherein the preset first concentration determination value and the second concentration determination value set to be lower than the first concentration determination value; the controller includes One of the functions is to control at least one of the cleaner and the blower to increase the air when the concentration of the odorous substance of one of the gases detected by the gas detector is equal to or greater than the first concentration determination value. And a function of the air odor purification performance of the cleaner; and the function is that the concentration of the odor substance is less than the first concentration determination value and is greater than the second concentration determination value, and the gas detector or the light is taken indoors The detector detects that at least one of the active species and the light of the gas is one of the gases, and improves the air purification performance of the air cleaner. An air cleaner according to any one of claims 1 to 4, wherein the cleaner is to at least make the odorous substance clean. For example, the air purifier of claim 6 of the patent scope includes: The blowing outlet blows out the air that has been cleaned by the cleaner; and the rotating mechanism rotates the outlet; the controller drives the rotating mechanism to improve the air purifying performance of the air cleaner, so that the blowing The exit rotates. An air cleaner according to claim 6 wherein the cleaner has a voltage application device for applying a voltage between the electrodes to clean the air; the controller is for improving the air purification performance of the air cleaner. The passing air amount, the discharging voltage, or the discharging current of the voltage applying device is increased. An air cleaner according to any one of claims 1 to 4, wherein the controller is provided with a clock function for controlling the operation of the air cleaner based on the detection signal at a time before the daylight enters the room.