JP2007029282A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner which enables a user to easily confirm the contamination condition of indoor air and the operation condition of the air cleaner. <P>SOLUTION: When the contamination degree of a fixed value or higher is detected, a blower 4 is rotated for a short time by an air volume larger than the maximum air volume by a cleaning operation. By the operation sound of the blower 4 generated by the high rotation, it is reported to the user that sensors 34 and 35 are normally operated and the indoor air is contaminated. After it is reported, the cleaning operation is started. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air purifier that cleans air in a space.

  The air purifier has cleaning means such as a dust collection filter and a deodorizing filter in the cabinet, and sucks room air into the cabinet by a fan that is also disposed in the cabinet, and passes the cleaning means through it. The dust and odor in the air are removed by the cleaning means, and the cleaned air is released into the room.

  In addition, there is an air cleaner that includes a dirt sensor that detects the degree of contamination of room air, such as a gas sensor or a dust sensor, and that automatically controls the air volume according to the degree of contamination of the room air. Since the air volume is controlled to increase as the degree of contamination in the room air increases, the removal of dust and odor in the room air can be accelerated.

  In order for the user to recognize the operation of the air cleaner, the degree of contamination of the indoor air output from the dirt sensor and the operating status of the air cleaner are visually notified using a display device such as an LED. Is common (Patent Document 1).

JP 2001-74301 A (see paragraph 0026)

  However, a display device such as an LED may not be visible depending on where the air cleaner is installed and where the user is. The user cannot grasp the indoor air pollution status and the operating status of the air purifier.

  In view of the above problems, an object of the present invention is to provide an air purifier in which a user can easily check the indoor air pollution status and the operating status of the air purifier.

  In order to achieve the above object, the present invention provides a blower that sucks indoor air from a suction port into a cabinet and blows it into the room from a blower outlet, a cleaning means that cleans the sucked air, and an external to the air cleaner. Detection means and a control device for controlling the air volume of the blower are provided, and the control device performs a high-speed purification operation for rotating the blower at a high speed regardless of the operation state of the device by detecting external fluctuations. The air cleaner is characterized by notifying that there has been an external fluctuation due to the sudden acoustic change.

  Examples of the cleaning means include, but are not limited to, filters such as a dust collection filter and a deodorization filter, a dust collector, and an ion generator. Moreover, you may combine 2 or more types. The ion generator generates negative ions and positive ions, removes bacteria in the air, and inactivates viruses.

  Examples of external fluctuations with respect to the air purifier include increase / decrease of dirt in the room air, input operation using input means such as a remote controller and operation buttons, presence / absence of a person, arrival of a set time at the time of timer setting, It is particularly preferable to cause a change in the operation of the air cleaner. For example, increase / decrease in the amount of dirt in the room air to the extent that it is necessary to change the air volume of the blower, input operation for operation switching, and arrival of a set time when a timer is set. However, the present invention is not limited to these.

  Examples of means for detecting the degree of contamination of indoor air include dirt sensors such as a gas sensor, a dust sensor, and an odor sensor, but are not limited to these as long as the degree of contamination of air can be detected. Moreover, you may combine 2 or more types.

  The control device urgently executes a high-speed purification operation for rotating the blower at a high speed when an external change is detected from the detection means. High rotation is the number of rotations higher than that during normal operation, allowing the user in the room to recognize the operation sound (rotation sound or blowing sound) of the blower. The user is notified that there has been an external change due to the sudden acoustic change of the operation sound. By this notification, when no input operation is performed, it can be confirmed that the dirt sensor is operating normally and that the room air is dirty. Further, when an input operation is being performed, it can be recognized that the input has been performed reliably and that the operation has been switched by the input operation. Moreover, since a large amount of air can be cleaned by rotating the blower at a high speed as the notification means in this way, the effect of cleaning indoor air is enhanced.

  The notification time may be a time sufficient for the user to recognize the operation sound of the blower, and is, for example, about 1 to 30 seconds, preferably about 3 to 10 seconds, and more preferably about 5 seconds. If it is shorter than these ranges, it is difficult for the user to recognize the operation sound, and if it is longer, the user feels the operation sound loud and uncomfortable.

  Specifically, when the control device has an air volume automatic operation mode in which the air volume control of the blower is controlled according to the detected degree of indoor air pollution, if the air pollution level is detected above a certain value, Notification is made by operating the blower with an air volume larger than the air volume. If the blower is operated with an air flow larger than the maximum air flow in the automatic air flow operation mode, the user can check the normal operation of the dirt sensor and the contamination of the room air by the operation sound of the blower. The control device operates in the automatic air volume operation mode after notifying for a certain period of time.

  In addition, when the control device has an air volume fixed operation mode in which operation is performed with a constant air volume, when the control device detects a degree of contamination that is greater than a certain value, the control device operates the fan with an air volume larger than the air volume in the air volume fixed operation mode. Notify by driving. If the blower is operated with an air flow larger than the air flow in the fixed air flow operation mode, the user can check the normal operation of the dirt sensor and the contamination of the indoor air by the operation sound of the blower. After the notification, the control device operates in the air volume fixed operation mode.

  According to the present invention, the user can check the indoor air pollution status and the air cleaner operating status from the operating sound of the blower regardless of the installation location of the air cleaner and the position of the user. Moreover, since a lot of room air can be cleaned by raising an air volume, the cleaning efficiency after alerting | reporting improves. In addition, since the air volume is reduced after the notification, the user is not uncomfortable.

  An air purifier equipped with an ion generator as an embodiment of the air conditioner of the present invention is shown in FIGS. In the figure, 1 is a cabinet, 2 is a front plate, 3 is a filter for a cleaning means, 4 is a fan for a blower, 5 is a fan motor, 6 is an outlet, 7 is an ion generator for the cleaning means, 8 is a base, and 9 is a base. It is an operation unit.

  The cabinet 1 is divided into two parts, front and rear, and a front plate 2 is provided so as to cover the front surface of the cabinet 1. A storage unit 10 for storing the filter 3 is disposed on the front side of the cabinet 1. The storage unit 10 is formed as a recess having an open front surface, and suction holes for the sucked air are formed radially on the back surface of the storage unit 10. And the air blower is attached to the center part of the passage hole of the back.

  The front plate 2 is arranged with a certain gap from the front surface of the cabinet 1. A front suction port 11 is formed in the vertical direction in the center of the front plate 2, and a four-sided gap between the front plate 2 and the cabinet 1 serves as a side suction port 12. Therefore, air is sucked into the inside from the front surface of the cabinet 1.

  The filter 3 is composed of three types: a prefilter, a deodorizing filter, and a dust collection filter. A pre-filter, a deodorizing filter, and a dust collecting filter are arranged in this order from the suction port side, and are detachably mounted.

  The prefilter is made of polypropylene having a high air passage resistance, and collects large foreign matter such as dust and dirt in the air sucked from the room. A deodorizing filter is made by adhering a non-woven fabric of polyester to the upper and lower surfaces of a rectangular outer peripheral frame, and uniformly putting activated carbon between the non-woven fabrics of the upper and lower surfaces. Acetaldehyde and ammonia as odor components in the air Adsorb acetic acid. The dust collection filter has a structure in which the frame material is welded by inserting the HAP sheet on the top and the bottom with thermocompression bonding in a state where the trellis and aggregate impregnated with aggregate are folded. To collect dust and dirt.

  In such a filter configuration, the pre-filter collects dust and dirt in the air sucked from the room, and the deodorizing filter absorbs acetaldehyde, ammonia, acetic acid, etc., which are odor components in the air, and finally Fine dust and dust that have passed through the pre-filter are collected by the dust collection filter. Therefore, the air that has passed through the filter becomes clean air free of odor, dust, and dust.

  A blower is disposed on the back side of the cabinet 1, and the blower is located on the downstream side of the filter 3. The fan 4 of the blower is in the form of a turbo, and is thicker than the fan diameter so as to exhibit a silent effect. The fan motor 5 uses a direct current motor that places importance on controllability. An air outlet 6 is provided above the fan 4.

  The air outlet 6 is located on the back side of the upper surface of the cabinet 1. The blower outlet 6 is provided with a louver and can change the direction of the blown-out air. By driving the blower, the air sucked from the suction ports 11 and 12 through the filter 3 is blown upward from the blower outlet 6. Although not shown, a front outlet is also provided in the upper front portion of the cabinet. Switching between the front outlet and the outlet 6 is performed by a damper.

  The ion generation device 7 includes an ion generation element 20 and a voltage application circuit that supplies a high voltage to the ion generation element 20. The ion generating element 20 is provided between the fan 4 and the air outlet 6, and is disposed facing the air blowing path from the fan 4 to the air outlet 6.

  As shown in FIG. 4, the ion generating element 20 includes a discharge electrode 22 provided on the surface of a flat dielectric 21, a discharge electrode contact 23 for supplying power to the discharge electrode 22, and a dielectric 20 An induction electrode 24 embedded inside and provided in parallel with the discharge electrode 22, an induction electrode contact 25 for supplying electric power to the induction electrode 24, and a resistance contact for welding resistance are provided.

  As the material of the dielectric 21, a material excellent in oxidation resistance is used as the organic substance. For example, a resin such as polyimide or glass epoxy can be used. As the inorganic substance, ceramics such as high-purity alumina, crystallized glass, forsterite, and steatite are used. In view of the corrosion resistance, inorganic materials are suitable. Further, in view of moldability and ease of electrode configuration described later, it is preferable to mold using ceramic. In addition, when the density variation inside the material is small and the insulation rate of the dielectric 21 is uniform, the insulation resistance between the discharge electrode 22 and the induction electrode 24 becomes uniform.

  The shape of the dielectric 21 may be another shape such as a circular plate, an elliptical plate, or a polygonal plate, and may be a cylindrical shape. In view of productivity, it is preferable to form a plate as shown in FIG. The plate shape includes both a disk shape and a rectangular parallelepiped shape. The dielectric 21 is formed by laminating two plates.

  The discharge electrode 22 is made of a conductive material such as a conductive metal. At this time, the condition is that it does not cause deformation such as melting by electric discharge. The discharge electrode 22 is formed integrally with the dielectric 21 on the surface of the dielectric 21. When the discharge electrode 22 is provided on the induction electrode 24 side from the surface of the dielectric 21, the depth from the surface is made uniform, or when the discharge electrode 22 is provided protruding from the surface of the dielectric 21, the thickness is made uniform.

  The shape of the discharge electrode 22 may be any shape such as a planar shape, a lattice shape, and a linear shape. If the electric field concentrates easily in a shape such as a lattice or a line, the discharge can be performed even if the voltage applied between the discharge electrode 22 and the induction electrode 24 is low.

  The induction electrode 24 is made of a conductive material, like the discharge electrode 22. In addition, the induction electrode 24 is parallel to the discharge electrode 22 in order to make the insulation resistance between the discharge electrode 22 and the induction electrode 24 uniform. That is, the induction electrode 24 is disposed in parallel with the discharge electrode 22 in the dielectric 21 so that the distance between the discharge electrode 22 and the induction electrode 24 (hereinafter referred to as interelectrode distance) is constant. Provided. Thereby, the discharge state between the discharge electrode 22 and the induction electrode 24 is stabilized, and positive ions and negative ions can be efficiently generated.

  Therefore, when the dielectric 21 is plate-shaped, the discharge electrode 22 is formed in a planar shape, and the induction electrode 24 is formed in a planar shape parallel to the discharge electrode 22. When the dielectric 21 has a cylindrical shape, the discharge electrode 22 is formed on the outer peripheral surface of the cylinder, and the induction electrode 24 is formed in an axial shape. Thereby, the distance between electrodes can be made constant.

  The discharge electrode contact 23 is a contact with the discharge electrode 22, and one end of a lead wire such as a copper wire or an aluminum wire is connected to the contact 23, and the other end of the lead wire is connected to a contact of a voltage application circuit. . The discharge electrode contact 23 is preferably provided on the surface of the dielectric 21 for ease of connection with the lead wire. Since the potential is the same as that of the discharge electrode 22, the distance between the induction electrode 24 and the discharge electrode contact 23 is set to be longer than the distance between the electrodes. With this configuration, a stable discharge state can be obtained.

  The induction electrode contact 25 is a contact that is electrically connected to the induction electrode 24. One end of a lead wire made of copper wire or the like is connected to the contact 25, and the other end of the lead wire is connected to a contact of a voltage application circuit. The induction electrode contact 25 is preferably provided on the surface of the dielectric 21 for ease of connection with the lead wire. Since the potential is the same as that of the induction electrode 24, the distance between the discharge electrode 22 and the induction electrode contact 25 is set to be longer than the distance between the electrodes. With this configuration, a stable discharge state can be obtained.

  Also, the distance between the discharge electrode contact 23 and the induction electrode contact 25 is formed longer than the distance between the electrodes. Further, when both the discharge electrode contact 23 and the induction electrode contact 25 are provided on the surface (hereinafter referred to as the lower surface) opposite to the surface (hereinafter referred to as the upper surface) on which the discharge electrode 22 is provided, positive ions and negative ions are generated. There is no wiring such as a lead wire on the upper surface on which the discharge electrode 22 is provided. When the air is blown onto the upper surface, the air flow is not disturbed by the lead wires. Such an effect can be similarly obtained by providing the discharge electrode contact 23 and the induction electrode contact 25 at a position other than the upper surface.

  The discharge electrode 22, the dielectric electrode 24, and the voltage application circuit can be connected in a manner other than a mode in which the discharge electrode 22 and the induction electrode 24 are both connected to the voltage application circuit and a voltage is applied to both the electrodes 22 and 24. A configuration in which the electrode 22 is connected to the ground to be the ground potential, the induction electrode 24 is connected to the voltage application circuit, and a discharge electrode 22 is connected to the voltage application circuit, and the induction electrode 24 is connected to the ground to be the ground potential. is there.

  In order to generate both positive ions and negative ions when one ion generating element 20 is used, the voltage applied between the discharge electrode 22 and the induction electrode 24 by the voltage application circuit needs to be an alternating voltage. It is. This alternating voltage is not limited to a sinusoidal alternating voltage that is generally used for commercial power supplies (hereinafter, the sinusoidal alternating voltage is referred to as an AC voltage), but is a rectangular wave alternating voltage. Alternatively, an alternating voltage may be applied using another waveform.

  Specifically, the dielectric 21 of the ion generating element 20 is a rectangular parallelepiped having a width of 15 mm, a length of 37 mm, and a thickness of 0.9 mm. The dielectric electrode 24 is formed in a letter N shape of about 6.0 mm × 10 mm parallel to the upper surface of the dielectric 21, and two dielectric electrodes 24 having a width of 5 mm are arranged to face each other. On the upper surface of the dielectric 21, a discharge electrode 22 having a yo-shape (width 9 mm, lateral direction 9 mm) is arranged with respect to the two induction electrodes 24. The shape of the electric field concentration portion of the discharge electrode 22 is a shape that protrudes in a triangular shape from the sides of the yo-shape so as to be an intersection on the induction electrode 24.

  The discharge electrode contact 23 is provided on the lower surface of the dielectric 21. One end of the discharge electrode contact 23 is conducted to the discharge electrode 22, and the other end is conducted to the discharge electrode 22 at a position formed inside the corner of the discharge electrode 22 on the upper surface of the dielectric 21.

  The induction electrode contact 25 is provided at an arbitrary position on the lower surface of the dielectric 21 where the discharge electrode 22 facing the induction electrode 24 is not formed. The distance between the discharge electrode contact 23 and the induction electrode contact 25 is formed longer than the distance between the electrodes.

A case where a voltage is applied to the ion generating element 20 will be described. When the voltage application circuit is activated, an alternating high voltage having a peak voltage of about 3.5 kV is applied between the discharge electrode 22 and the induction electrode 24 to generate approximately the same amount of positive ions and negative ions. H ⁺ (H ₂ O) _n (n is an arbitrary natural number) as positive ions and O ₂ ⁻ (H ₂ O) _m (m is an arbitrary natural number) as negative ions in a space to be sterilized by a blower When delivered, the above ions adhere to airborne bacteria in the air and chemically react, and have the action of decomposing hydrogen peroxide (H ₂ O ₂ ) and / or hydroxyl radicals (.OH), which are active species generated at that time. , Can remove floating bacteria in the space. Further, by changing the voltage waveform to be applied, the generation ratio of each ion can be changed, and more negative ions are generated than positive ions.

  The operation unit 9 is provided with a light receiving unit that receives signals from an operation switching button, a turn-off timer button, a display lamp, and a remote controller. The display lamp includes a cut-off timer display lamp, an automatic operation lamp, a pollen operation lamp, and an air volume lamp. Similar to the operation unit 9, the remote control is provided with an operation switching button. A display lamp is not provided.

  The operation switching button is for turning on / off the operation. When this button is pressed, the operation is started, the operation is performed in the automatic operation mode, and the automatic operation lamp is lit. Every time the operation switching button is pressed, the operation mode is switched in order from automatic operation ⇒ silent operation ⇒ rapid operation ⇒ pollen operation ⇒ 15 minute operation ⇒ automatic operation. In accordance with this, the automatic operation lamp ⇒ silent lamp ⇒ medium to strong to rapid operation lamp ⇒ pollen operation lamp ⇒ 15 minute operation lamp ⇒ automatic operation lamp and turn off and on according to the operation mode.

  The off timer button is for setting the operation time in order to automatically stop the operation. Each time the off timer button is pressed, 1 hour ⇒ 4 hours ⇒ 8 hours ⇒ cancel ⇒ 1 hour and the set time is switched. In response to this, the display lamp is also switched from 1 hour lamp ⇒ 4 hour lamp ⇒ 8 hour lamp ⇒ unlit ⇒ 1 hour lamp. When the time set by the timer elapses, the operation stops.

  And the air cleaner is provided with the control apparatus 30 which controls the driving | operation of an air cleaner according to the input from the operation part 9 and a sensor. As shown in FIG. 5, an ion generation drive circuit 31, a blower drive circuit 32, a remote control reception circuit 33, a dust sensor 34, an odor sensor 35, and a human body sensor 36 are connected to the control device 30 formed of a microcomputer. A power supply circuit and a power supply clock circuit are also provided. Reference numerals 34 and 35 are dirt sensors.

  The power supply circuit rectifies and smoothes commercial power via a current fuse and a thermal fuse by a diode bridge, and supplies the power as an input to a fan motor power supply and a switching power supply.

  The power supply clock circuit converts the primary voltage waveform of the power supply circuit into a square waveform signal. When the output continues the High signal or the Low signal for a certain time or more, the control device 30 determines that the power is out, and stops the driving of the odor sensor 35, the dust sensor 34, and the human body sensor 36 and the display output.

  The ion generation drive circuit 31 drives the voltage application circuit. In response to a command from the control device 30, switching is made to each of the ion operation modes of cluster ion automatic, clean, ion control, and cluster ion cutting, and ions corresponding to the ion operation mode are generated.

  The blower drive circuit 32 supplies a control power supply and a PWM pulse based on the output from the control device 30 during the operation of the blower, creates a speed command DC voltage for controlling the rotation of the fan motor 5, and increases the magnitude of the voltage. Accordingly, the fan motor 5 is rotationally driven. That is, the number of rotations of the blower is set so that the air volume is low, and the intensity of the blower is in a plurality of levels of weak to strong, and the blower driving circuit 32 selects the number of rotations according to a command from the control device 30. The lower the rotation speed, the lower the air volume and the lower the noise. On the other hand, when the rotational speed is high, the air volume is large and the noise becomes large.

  The remote control receiving circuit 33 receives the infrared signal sent from the remote control by the light receiving unit, converts it into a High signal or a Low signal, and outputs it to the control device 30.

  The dust sensor 34 is an optical sensor in which a light emitting element and a light receiving element are combined, and detects the amount of dust in the room. The output voltage increases as the amount of dust increases. The output voltage is input to the control device 30. The control device 30 determines the degree of contamination according to the difference from a preset value, and changes the operation mode according to the degree of contamination. The dust sensor 34 is driven only during operation, and is stopped during stoppage.

  Moreover, when the particle | grains detected with the dust sensor 34 are large, an output will become high. In other words, tobacco smoke outputs continuously, and dust outputs high output discontinuously. Since particles such as pollen are output discontinuously with an output larger than dust, tobacco smoke, dust and pollen can be classified.

  The odor sensor 35 uses a sensor made of a metal oxide semiconductor, and detects odors such as cigarettes and living odors by utilizing the fact that the resistance value changes when a gas component is adsorbed on the sensor surface. The output voltage of the odor sensor 35 is input to the control device 30, and the control device 30 determines the degree of contamination according to the difference from a preset value and changes the operation mode. The odor sensor 35 is always driven during operation, and is intermittently driven for a fixed time even during stoppage.

  The human body sensor 36 irradiates light such as infrared rays or ultrasonic waves, and detects the presence / absence, movement, and distance of a person according to the state of reflection. Or you may detect a human body from an image like a CCD camera. The detection signal of the human body sensor 36 is input to the control device 30, and the control device 30 determines the presence / absence, movement, and position of a person based on the detection signal, and changes the operation mode. The human body sensor 36 is always driven during operation, and is intermittently driven for a fixed time even during stoppage.

  In each operation mode, the automatic operation mode automatically switches the air volume from strong to weak and quiet according to the degree of air contamination detected by the sensors 34 and 35. That is, the air volume automatic operation mode. The silent operation mode fixes the air volume to silent. That is, the air volume fixed operation mode. In the pollen operation mode, after the operation with a high air flow is performed for a certain period of time, the operation with the air flow decreased and increased is repeated for a certain time. In the 15-minute operation mode, after a certain amount of time of high airflow operation, automatic operation is performed thereafter. Further, when there is an external change, the control device executes a high-speed purification operation that temporarily rotates the blower at a high speed regardless of the operation state of the device. It is notified that there has been an external fluctuation due to a sudden acoustic change in the operating sound that occurs during this high-speed purification operation. The rotation speed at this time is made higher than the maximum rotation speed in the changed operation mode.

  The operation of the air cleaner having the above configuration will be described with reference to FIGS. When the air volume automatic operation mode is selected by the operation switching button of the operation unit 9 and the operation is started, the control device 30 determines air contamination based on the outputs of the odor sensor 35 and the dust sensor 34. If the dirt level output is below a certain value, the blower is operated at a low speed and a constant air volume. Further, when the output of the degree of contamination is equal to or higher than a certain value, a cleaning operation for cleaning the indoor air is performed. The cleaning operation is an operation in which the rotational speed of the blower is increased in accordance with the degree of dirt in the room air to increase the air volume, and the air volume is decreased stepwise as the room air is cleaned. In the clean operation, the maximum rotational speed of the blower is set to 570 rpm or less. If it is this range, since an operation sound is suppressed to 35 dB or less, it does not become unpleasant for a user.

  However, prior to performing this cleaning operation, notification is performed by executing an ultra-high-speed high-speed purification operation, and thereafter, the cleaning operation is performed. This notification is performed for a short time of about 5 seconds. The ultra-high rotation of the blower is the rotational speed at which the air volume is larger than the maximum air volume by the clean operation, and is about 600 rpm. The operating sound of the blower due to the high rotation can notify the user that the sensors 34 and 35 are operating normally and the indoor air is dirty. Therefore, it is not necessary to provide a separate buzzer or generator for notification, and existing members can be used.

  When the silent operation mode is selected and the operation is started, the control device 30 first determines air contamination based on the outputs of the odor sensor 35 and the dust sensor 34. When the output of the degree of contamination is below a certain value, the air volume fixing operation is performed by rotating the blower at a constant rotational speed. As shown in FIG. 7, when the output of the degree of contamination is equal to or greater than a certain value, notification is performed by executing a high-speed purification operation that rotates the blower at a high speed for a short time of about 5 seconds. The high rotation of the blower is the rotation speed at which the air volume is larger than the air volume by the air volume fixing operation, and is about 600 rpm. The operating sound of the blower due to the high rotation can notify the user of the normal operation of the sensor and the contamination status of the room air. After the notification for about 5 seconds, the air volume is fixed. In the air volume fixed operation, it is preferable that the air flow rate can be set to be strong to weak other than silent by user operation.

  As described above, when the output of the degree of contamination from the sensors 34 and 35 is equal to or higher than a certain value, the user can make the sensors 34 and 35 operate normally by notifying with the operation sound of the blower due to high rotation. It can be confirmed that the indoor air is dirty. Moreover, since a lot of room air can be cleaned by rotating the blower at a high speed, the efficiency of cleaning the room air in the operation after the notification is increased. Furthermore, since the notification is performed using a blower, it is not necessary to provide a separate notification device such as an LED or a buzzer.

In the ion generator 7, simultaneously with the start of the automatic air volume operation, the control device 30 selects the ion operation mode based on the output of each sensor 34, 35, 36. When the output of the odor sensor 35 is not more than a certain value, the output of the dust sensor 34 is not more than a certain value, and there is no person, the command from the control device 30 is set to the first operation mode. Energized and a predetermined voltage is applied to the ion generating element 20. In this ion operation mode, O ₂ ⁻ (H ₂ O) _m as negative ions is most stably generated. The generated negative ions are mixed with clean air free of odor, dust and dust that has passed through the three kinds of filters 3 and 30,000 negative ions / CC (ion counter at a distance of 10 cm from the outlet) The amount of ions measured by the above, the same applies to the following), and is discharged into the room through the outlet 6. This negative ion provides a relaxing effect.

  When the output of the odor sensor 35 is not more than a certain value, the output of the dust sensor 34 is not more than a certain value, and there is a person, the command from the control device 30 is set to the second operation mode. Even in this ion operation mode, a lot of negative ions are generated, and the negative ions are mixed with odors, dust, and clean air free of dust that has passed through the three types of filters 3, and 30,000 negative ions / It becomes an air flow containing CC and is discharged into the room from the front outlet. These negative ions quickly reach people and create a comfortable space.

When the output of at least one of the odor sensor 35 and the dust sensor 34 is larger than a certain value and there is no person, the command from the control device 30 is set to the third operation mode. In this ion operation mode, H ⁺ (H ₂ O) _n (n is an arbitrary natural number) as positive ions and O ₂ ⁻ (H ₂ O) _m (m is an arbitrary natural number) as negative ions are most stable. Is generated. An air flow containing about 30,000 pieces of clean air, adjusted positive ions and negative ions / CC each is discharged from the air outlet 6 into the room. Attaching to airborne bacteria in the air and causing a chemical reaction, with the action of decomposing hydrogen peroxide (H ₂ O ₂ ) and / or hydroxyl radicals (.OH), which are active species generated at that time, Sterilize and remove.

  When the output of at least one of the odor sensor 35 and the dust sensor 34 is larger than a certain value and a person is present, an air flow containing negative ions and positive ions is similarly discharged from the front outlet into the room. The floating bacteria in the space in front of the cabinet 1 can be sterilized and removed.

Further, at the initial stage of operation, H ⁺ (H ₂ O) _n (n is a positive ion) when there is a person based on the output of the human body sensor 36 regardless of the outputs of the odor sensor 35 and the dust sensor 34. Arbitrary natural numbers) and O ₂ ⁻ (H ₂ O) _m (m is an arbitrary natural number) as negative ions are most stably generated. Similarly, an air flow containing negative ions and positive ions is discharged into the room from the outlet 6. It is possible to sterilize and remove indoor floating bacteria.

When there is no person, O ₂ ⁻ (H ₂ O) _m as negative ions is most stably generated. Similarly, an air flow containing negative ions is discharged from the outlet 6 into the room. This negative ion provides a relaxing effect.

  In this manner, by blowing out air containing ions from the selected outlet 6 depending on the degree of dirt in the room and the presence or absence of people, it is possible to inactivate rapidly floating bacteria and create a comfortable space. .

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. The present invention can also be applied to an air conditioner, a dehumidifier, a humidifier, a refrigerator, a fan heater or the like having an air cleaning function.

  In the above-described embodiment, notification is made when the degree of dirt of a certain value or more is detected by the dirt sensors 34, 35. However, when the operation is switched by an input operation of a remote controller or the like, a high-speed purification operation that rotates the blower at a high speed is performed. You may make it alert | report by executing. After the notification, the changed operation is performed. The user can confirm by the notification that the input has been performed reliably and the operation switching has been performed by the input operation.

  In addition, since there is no need for notification when there is no person in the room, it is possible to use a human body sensor so that notification is not performed when there is no person and notification is performed only when there is a person.

Plan view of the air cleaner of the present invention Front view of air purifier Cross section of air cleaner Cross section of ion generator Air cleaner control block diagram Timing chart showing the operation of the blower in the air volume automatic operation mode Timing chart showing the operation of the blower in the fixed air volume operation mode

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cabinet 3 Filter 4 Fan 5 Fan motor 6 Air outlet 7 Ion generator 9 Operation part 20 Ion generator 30 Control apparatus 34 Dust sensor 35 Odor sensor 36 Human body sensor

Claims (4)

A blower that sucks indoor air into the cabinet from the air inlet and blows it into the room through the air outlet, a cleaning means that cleans the sucked air, a detection means that detects external fluctuations with respect to the air cleaner, and the blower And a control device for controlling the air volume of
The control device performs a high-speed purification operation that rotates the blower at a high speed regardless of the operation state of the device by detecting an external change, and notifies that an external change has occurred due to the sudden acoustic change. A featured air purifier. A blower that sucks indoor air into the cabinet from the air inlet and blows it into the room through the air outlet, a cleaning means that cleans the sucked air, a dirt sensor that detects the degree of dirt in the indoor air, and an air flow control of the blower And a control device for performing
The control device has an air volume automatic operation mode for controlling the air volume of the blower according to the detected degree of dirt in the indoor air, and when detecting a degree of dirt of a certain value or more, the air volume is more than the maximum air volume in the air volume automatic operation mode. An air purifier that is notified by operating the blower with a large air volume. The air cleaner according to claim 2, wherein the control device operates in an automatic air volume operation mode after notifying for a certain period of time. A blower that sucks indoor air into the cabinet from the air inlet and blows it into the room through the air outlet, a cleaning means that cleans the sucked air, a dirt sensor that detects the degree of dirt in the indoor air, and an air flow control of the blower And a control device for performing
The control device has an air volume fixed operation mode in which operation is performed with a constant air volume, and when the degree of contamination is detected above a certain value, the control device notifies by operating the blower with an air volume larger than the air volume in the air volume fixed operation mode. An air purifier characterized by.

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