Gas processing device

Abstract

To provide a gas processing device capable of performing proper purification of the atmosphere.SOLUTION: A gas processing device includes: a housing; an ozone generation part provided in the housing, and generating ozone; a blower part for exhausting a gas containing the generated ozone to the outside of the housing; a detection part for detecting the purification object of the outside of the housing; and a controller for changing the direction in which the gas containing ozone is exhausted, by controlling the blower part, based on the value of detection by the detection part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to a gas treatment device. [Background technology]

[0002] Reflecting growing health awareness, there is an increasing demand for gas purification (e.g., air purification) in spaces where people enter, such as homes, stores, hospitals, warehouses, factory buildings, waiting rooms for public transport, etc. For example, there is an increasing demand for deodorizing the atmosphere, sterilizing bacteria contained in the atmosphere, and inactivating viruses.

[0003] For this reason, gas treatment devices have been proposed that include a photocatalytic device and an ozone generator, and purify atmospheric gases by combining the photocatalytic action and the oxidizing action of ozone. However, when purifying an atmosphere using ozone, if the ozone concentration in the atmosphere becomes too high, people may feel uncomfortable or be adversely affected. In this case, feedback control of the amount of ozone generated by the ozone generator based on the ozone concentration detected by an ozone sensor or the like can keep the ozone concentration in the atmosphere within a predetermined range. Furthermore, the atmosphere in which the gas treatment device is installed can be purified almost uniformly.

[0004] However, there is a distribution in the concentration of the target substance to be purified in the atmosphere. For example, in an area where there is an object that is a source of the target substance to be purified, the concentration of the target substance to be purified in the atmosphere is higher than in other areas.

[0005] Therefore, if the atmosphere in which the gas treatment device is installed is purified almost uniformly, the time required for purification will be longer in areas where the concentration of the target substance is high, and excess ozone will be supplied to areas where the concentration of the target substance is low.

[0006] Therefore, there has been a demand for the development of a gas treatment device that can properly purify the atmosphere. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2022-99515 Summary of the Invention [Problem to be solved by the invention]

[0008] The problem to be solved by the present invention is to provide a gas treatment device capable of properly purifying the atmosphere. [Means for solving the problem]

[0009] The gas treatment device according to the embodiment comprises a housing; an ozone generating unit provided inside the housing for generating ozone; a blower unit for discharging the generated ozone-containing gas to the outside of the housing; a detector unit for detecting a target to be purified outside the housing; and a controller for controlling the blower unit to change the direction in which the ozone-containing gas is discharged based on the detection value by the detector unit. [Effects of the Invention]

[0010] According to an embodiment of the present invention, a gas treatment device capable of appropriately purifying an atmosphere can be provided. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic perspective view illustrating a gas treatment device according to an embodiment of the present invention. [Figure 2] 2 is a schematic perspective view illustrating a state in which a panel of the gas treatment device in FIG. 1 is removed. FIG. [Figure 3] 3 is a schematic diagram of the inside of the housing in FIG. 2 as viewed from the Y direction. [Figure 4] FIG. 2 is a block diagram of a gas treatment device. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments will be illustrated with reference to the drawings. In each drawing, like components are designated by like reference numerals and detailed descriptions thereof will be omitted where appropriate.

[0013] In each figure, arrows X, Y, and Z represent three mutually perpendicular directions. For example, the X direction is the width direction of the gas treatment device 1, the Y direction is the thickness direction of the gas treatment device 1, and the Z direction is the height direction of the gas treatment device 1. In addition, the term "sterilization" used for convenience in the following explanation can include "sterilization" which reduces the number of bacteria and viruses, and "sterilization" which kills bacteria and viruses.

[0014] FIG. 1 is a schematic perspective view illustrating a gas processing device 1 according to this embodiment. FIG. 2 is a schematic perspective view illustrating the gas treatment device 1 in FIG. 1 with a panel 21 removed. FIG. 3 is a schematic diagram of the inside of the housing 2 in FIG. 2 as viewed from the Y direction. FIG. 4 is a block diagram of the gas treatment device 1.

[0015] The gas processing device 1 illustrated in Figures 1 to 3 is a stationary type gas processing device that is installed on the floor. The gas processing device 1 may also be a wall-mounted type that is installed on a wall, or a tabletop type that is installed on a stand such as a table. The external shape, size, installation form, etc. of the gas processing device 1 can be changed as appropriate depending on the installation environment, application, etc. of the gas processing device 1. Below, a stationary type gas processing device 1 will be described as an example.

[0016] As shown in FIGS. 1 to 3, the gas treatment device 1 includes, for example, a housing 2, a light treatment unit 3, an ozone generation section 4, a blower section 5, a power supply section 6, a detection section 7, and a controller 8.

[0017] The housing 2 is box-shaped and has openings on both ends in the Z direction. In the case of a stationary type gas treatment device 1, the lower opening in the Z direction can be an inlet 2a through which atmospheric gas (e.g., air) flows in, and the upper opening in the Z direction can be an outlet 2b through which treated gas flows out. The locations of the inlet 2a and outlet 2b can be changed as appropriate depending on the installation form of the gas treatment device 1. For example, in the case of a wall-mounted type gas treatment device 1, the inlet 2a and outlet 2b can be located at both ends of the housing 2 in the X direction.

[0018] One end of the housing 2 in the Y direction can also be opened. A panel 21 can be detachably attached to the opening of the housing 2 in the Y direction. This makes it easy to install the optical processing unit 3, ozone generator 4, blower 5, power supply 6, detector 7, and controller 8 inside the housing 2 and to perform maintenance on them.

[0019] In the case of a stationary type gas treatment device 1, legs 22 can be provided at the lower end in the Z direction of the housing 2. Providing the legs 22 makes it easy to ensure a predetermined space between the floor and the inlet 2a. In addition, the upright posture of the housing 2 can be stabilized.

[0020] A cover 23 having a plurality of holes can be provided at the outlet 2b of the housing 2. The cover 23 can be, for example, a so-called finger guard.

[0021] 1 to 3, the housing 2 has an external shape of a rectangular parallelepiped, but the external shape of the housing 2 can be changed as appropriate depending on the installation form and installation environment of the gas treatment device 1. For example, the external shape of the housing 2 may be a circular cylinder, an elliptical cylinder, a polygonal cylinder, or the like.

[0022] There are no particular restrictions on the materials used for the housing 2, panel 21, legs 22, and cover 23, but in consideration of weight reduction and cost reduction, it is preferable to form these from resin.

[0023] 1 and 2, an operation panel 24 can be provided at the end of the housing 2 on the side where the outlet 2b is provided. In the Y direction, the operation panel 24 can be provided alongside the cover 23. The operation panel 24 can be provided with, for example, operation switches for inputting setting values ​​and the like to the controller 8, an ON / OFF switch for the power, and the like. The operation panel 24 can also be provided with an LCD panel that displays the operating status of the gas treatment device 1 and the level of concentration of odor components detected by the detection unit 7, which will be described later.

[0024] 2 and 3, the light processing unit 3 is provided inside the housing 2. The light processing unit 3 purifies the gas G flowing inside the housing 2. The light processing unit 3 includes, for example, a light blocking section 31, a filter 32, a photocatalyst section 33, a light source 34, and a reflecting section 35.

[0025] The light shielding portion 31 can be provided, for example, near the inlet 2a. The light shielding portion 31 prevents light irradiated from the light source 34 toward the photocatalyst portion 33 from leaking outside the housing 2 through the inlet 2a. The light shielding portion 31 can also allow gas that has flowed into the housing 2 from the inlet 2a to circulate. For example, as shown in FIG. 3 , the light shielding portion 31 has multiple flow paths 31a bent in the X direction. This configuration can prevent light that has entered the light shielding portion 31 from emitting toward the inlet 2a, and can allow gas that has flowed into the light shielding portion 31 to flow out into the housing 2. The light shielding portion 31 can be formed, for example, from metals such as iron, galvanized steel, and stainless steel, or resins such as fluororesin and ABS resin.

[0026] The filter 32 can be provided, for example, to cover at least one of the end of the light shielding portion 31 on the inlet 2a side and the end of the light shielding portion 31 opposite the inlet 2a side. The filter 32 illustrated in FIGS. 2 and 3 is provided on the side of the light shielding portion 31 opposite the inlet 2a side. The filter 32 allows the gas flowing into the housing 2 from the inlet 2a to flow and captures foreign matter such as dust contained in the gas. The filter 32 can be detachably provided on the housing 2 or the light shielding portion 31. This facilitates maintenance such as cleaning and replacement of the filter 32. The filter 32 can be a mesh made of, for example, resin, cloth, paper, metal, or the like.

[0027] The photocatalyst part 33 is provided, for example, on the side opposite to the inlet 2a side of the light blocking part 31. The photocatalyst part 33 has, for example, a substrate having a plurality of holes and a photocatalyst supported on the substrate. The substrate can be, for example, a ceramic plate having a plurality of holes, or a sheet formed by weaving a plurality of glass fibers or a plurality of metal wires. If the substrate is a ceramic plate or a sheet formed by weaving a plurality of metal wires, the rigidity of the substrate can be increased. Therefore, the flow rate and flow velocity of the gas G passing through the substrate can be increased, thereby improving the processing capacity.

[0028] The photocatalyst is, for example, granular and exhibits photocatalytic activity when light having a predetermined wavelength is incident thereon. The photocatalyst can be, for example, an ultraviolet-responsive photocatalyst or a visible-light-responsive photocatalyst. The ultraviolet-responsive photocatalyst includes, for example, titanium oxide. The visible-light-responsive photocatalyst includes, for example, tungsten oxide, titanium oxide doped with nitrogen, or titanium oxide ion-implanted with a different metal.

[0029] For example, the light source 34 is provided at a distance from the photocatalyst section 33 in the Z direction. For example, the light source 34 can be provided near the outlet 2b. The light source 34 faces the photocatalyst section 33. The light source 34 irradiates light to excite the photocatalyst provided in the photocatalyst section 33. For example, if the photocatalyst is an ultraviolet responsive photocatalyst, the light source 34 irradiates, for example, ultraviolet light (UV-A) with a wavelength of 315 nm or more and 420 nm or less. If the photocatalyst is a visible light responsive photocatalyst, the light source 34 irradiates, for example, visible light with a wavelength of 405 nm or more and 600 nm or less.

[0030] There are no particular limitations on the light source 34 as long as it can emit light of a predetermined wavelength. The light source 34 may be, for example, a light-emitting element such as a light-emitting diode, a laser diode, or an organic light-emitting diode, or may be a discharge lamp such as a mercury lamp, an excimer lamp, or a halogen lamp.

[0031] Here, the DNA and RNA of bacteria and viruses easily absorb ultraviolet light with a wavelength of 300 nm or less. Therefore, if the light source 34 includes, for example, a light-emitting element or a discharge lamp that irradiates ultraviolet light (UV-C) of 270 nm or more and 300 nm or less, it is possible to sterilize bacteria and inactivate viruses contained in the gas G flowing inside the housing 2, and to sterilize bacteria and inactivate viruses attached to the photocatalyst section 33 and the reflecting section 35. Furthermore, if the photocatalyst exhibits a photocatalytic action when exposed to UV-C, it is possible to sterilize bacteria and inactivate viruses by the photocatalytic action at the same time.

[0032] Therefore, in consideration of sterilization of bacteria and inactivation of viruses, it is preferable to use a light source 34 that irradiates at least UV-C. In this case, the light source 34 may include a light emitting element or discharge lamp that irradiates UV-C, and a light emitting element or discharge lamp that irradiates light for exciting the photocatalyst.

[0033] Furthermore, irradiation with ultraviolet light can kill bacteria, inactivate viruses, and decompose odor components. Therefore, if the light source 34 is provided, the photocatalyst section 33 can be omitted. In other words, the light processing unit 3 only needs to include the light source 34 that irradiates ultraviolet light. For example, the light source 34 can be provided so as to extend inside the housing 2 in the Z direction.

[0034] However, if a light source 34 that irradiates ultraviolet light and a photocatalyst unit 33 that has an ultraviolet-responsive photocatalyst are provided, gas can be treated using both the action of ultraviolet light and the action of the photocatalyst, which makes it easy to shorten the gas treatment time and increase the amount of gas that can be treated.

[0035] The reflecting unit 35 surrounds the space between the photocatalyst unit 33 and the light source 34 inside the housing 2. The reflecting unit 35 can be attached to the inner wall of the housing 2 using, for example, a fastening member such as a screw. The reflecting unit 35 is, for example, cylindrical and formed from a material with high reflectivity for light irradiated from the light source 34. The reflecting unit 35 can be formed from, for example, an aluminum alloy or stainless steel. Light irradiated from the light source 34 that is not directed toward the photocatalyst unit 33 is reflected by the inner wall of the reflecting unit 35. A portion of the light reflected by the inner wall of the reflecting unit 35 is incident on the photocatalyst unit 33. Furthermore, the light that is incident on the inner wall of the reflecting unit 35 propagates toward the photocatalyst unit 33 while repeatedly reflecting within the internal space of the reflecting unit 35. Therefore, light (ultraviolet rays) can be repeatedly irradiated onto the gas G flowing inside the reflecting unit 35. In other words, the provision of the reflecting unit 35 can improve the utilization efficiency of light irradiated from the light source 34. Furthermore, since light (ultraviolet rays) can be prevented from being incident on the inner wall of the housing 2, deterioration of the housing 2 can be prevented.

[0036] As shown in FIG. 3, the ozone generator 4 is provided inside the housing 2. The ozone generator 4 can be provided, for example, near the outlet 2b. At least one ozone generator 4 can be provided. When multiple ozone generators 4 are provided, for example, as shown in FIG. 3, the multiple ozone generators 4 can be arranged in the X direction. The number and arrangement of the ozone generators 4 can be changed as appropriate depending on the size of the gas treatment device 1 (housing 2), the required ozone concentration, etc.

[0037] The ozone generator 4 generates ozone from oxygen contained in the gas G flowing inside the housing 2. Ozone can be generated by, for example, silent discharge, corona discharge, creeping discharge, ultraviolet light irradiation, etc. In this case, silent discharge can maintain a low current without arc transition even at high voltages. Furthermore, since a voltage drop can be suppressed even when a discharge is formed, the energy given to electrons can be maintained at a high energy level.

[0038] Therefore, if the ozone generator 4 is configured to generate silent discharge, ozone can be efficiently generated from the oxygen contained in the gas G. Silent discharge can be generated, for example, by applying an AC voltage between electrodes via a dielectric such as glass. When the gas G is flowed through a space in which silent discharge is generated, some of the oxygen contained in the gas G is dissociated or excited, generating ozone.

[0039] The generated ozone is released to the outside of the housing 2 from the outlet 2b of the housing 2 along with the flow of gas G flowing inside the housing 2. Because ozone has a strong oxidizing effect, the ozone released to the outside of the housing 2 can purify the gas G in the atmosphere outside the housing 2, as well as objects in the atmosphere and the walls of the room (for example, by breaking down odorous components, sterilizing bacteria, and inactivating viruses). Note that the ozone that has reacted with odorous components becomes oxygen and is therefore rendered harmless.

[0040] As shown in FIG. 3, the blower 5 is provided inside the housing 2, for example. The blower 5 includes, for example, a fan 51 and a louver 52 . The fan 51 can be provided, for example, between the ozone generator 4 and the light source 34. The fan 51 forms a flow of gas G that flows inside the housing 2 from the inlet 2a toward the outlet 2b. At least one fan 51 can be provided. When multiple fans 51 are provided, the multiple fans 51 can be arranged in the X direction, for example, as shown in FIG. 3. The number and arrangement of the fans 51 can be changed as appropriate depending on the size of the gas treatment device 1 (housing 2), the required flow rate of gas G, etc.

[0041] There are no particular limitations on the fan 51 as long as it can create a flow of the gas G. The fan 51 can be, for example, an axial fan, a centrifugal fan, a sirocco fan, or the like. The fan 51 illustrated in FIG. 3 is an axial fan. If the fan 51 is an axial fan, the flow rate of the gas G can be increased.

[0042] The louver 52 can be provided, for example, between the ozone generating unit 4 and the cover 23. The louver 52 has multiple blades. In this case, the angle of the multiple blades with respect to the Z direction can be changed. If the angle of the multiple blades can be changed, the release direction of the gas G can be changed. Since the released gas G contains ozone, changing the release direction of the gas G can change the arrival position of the ozone. The angle of the multiple blades can be changed, for example, by the control motor 52a.

[0043] 3 illustrates an example in which multiple blades are aligned in the X direction, but multiple blades may also be aligned in the Y direction. Also, multiple blades aligned in the X direction and multiple blades aligned in the Y direction may be provided.

[0044] As described above, the blower 5 can discharge the generated gas G containing ozone to the outside of the housing 2.

[0045] 2 and 3, the power supply unit 6 can be provided inside the housing 2 and outside the reflector 35. The power supply unit 6 has, for example, a power supply 61 and a power supply 62. As shown in FIG. 4, the power supply 61 and the power supply 62 can be electrically connected to, for example, a commercial AC power supply 100.

[0046] The power supply 61 converts, for example, AC power from the commercial AC power supply 100 into predetermined DC power and supplies the converted DC power to the ozone generation unit 4, the blower unit 5, the detection unit 7, and the controller 8. The power supply 62 converts, for example, AC power from the commercial AC power supply 100 into predetermined DC power and supplies the converted DC power to the light processing unit 3. Note that a power supply that supplies DC power to the light processing unit 3, the ozone generation unit 4, the blower unit 5, the detection unit 7, and the controller 8 may also be provided.

[0047] The controller 8 has, for example, a calculation unit such as a CPU (Central Processing Unit) and a storage unit such as a memory. The controller 8 can be, for example, a computer. The controller 8 controls the operations of the light processing unit 3, the ozone generation unit 4, and the blower unit 5 based on, for example, a control program stored in the storage unit.

[0048] For example, the controller 8 controls the light source 34 provided in the light processing unit 3 to irradiate the photocatalytic part 33 with light. When the photocatalytic part 33 is irradiated with light, the photocatalytic action is exhibited. For example, the controller 8 controls the ozone generator 4 to generate ozone. For example, the controller 8 controls the fan 51 provided in the blower 5 to suck gas G into the housing 2 through the inlet 2a of the housing 2, flow the sucked gas G into the housing 2, and release the gas G that has flowed inside the housing 2 from the outlet 2b of the housing 2 to the outside of the housing 2. At this time, the gas G flowing inside the housing 2 is purified by the light processing unit 3. In addition, ozone generated by the ozone generator 4 is mixed into the gas G released outside the housing 2.

[0049] As described above, the ozone generator 4 purifies at least one of the gas G outside the housing 2 and objects and room walls outside the housing 2 by releasing the generated ozone outside the housing 2. Therefore, if the ozone generator 4 is provided, it is possible to purify, for example, objects outside the housing 2 that generate odorous components and objects on which bacteria or viruses are attached.

[0050] In this case, if the ozone concentration in the atmosphere becomes too high due to the release of ozone outside the housing 2, people may feel uncomfortable or there may be adverse effects on people, pets, etc. Therefore, it is preferable to keep the ozone concentration in the atmosphere below a predetermined value (for example, below 0.05 ppm).

[0051] In this case, the ozone concentration in the atmosphere can be kept within a predetermined range by detecting the ozone concentration in the atmosphere using an ozone sensor or the like and, based on the detection result, performing feedback control on the power applied to the ozone generator 4. Furthermore, the atmosphere in which the gas treatment device 1 is installed can be purified almost uniformly.

[0052] However, there is a distribution in the concentration of the target substance to be purified in the atmosphere. For example, in an area where there is an object that is a source of the target substance to be purified, the concentration of the target substance to be purified in the atmosphere is higher than in other areas. Therefore, if the atmosphere in which the gas treatment device 1 is installed is purified almost uniformly, it will take a long time to purify in areas where the concentration of the target substance to be purified is high. Furthermore, excess ozone will be supplied to areas where the concentration of the target substance to be purified is low.

[0053] Therefore, the gas treatment device 1 is provided with a detection unit 7. The detection unit 7 detects the object to be purified outside the housing 2. The detection unit 7 detects, for example, odor components contained in the gas G. The detection unit 7 can be, for example, an odor sensor. The odor is, for example, an odor generated when organic matter is decomposed by microorganisms or bacteria (e.g., putrid or rotten odor), or an odor caused by volatile organic compounds (VOCs).

[0054] The detection unit 7 can be provided at least either inside the housing 2 or outside the housing 2. When the detection unit 7 is provided inside the housing 2, it can be provided near the inlet 2a, for example, as shown in Figures 2 and 3. In this case, the detection unit 7 can be provided between the inlet 2a and the photocatalyst unit 33.

[0055] When the detection unit 7 is provided outside the housing 2, the detection unit 7 can be provided on the outer surface of the housing 2, for example, as shown in Fig. 1. In this case, the gas G is attracted to the side of the housing 2 where the inlet 2a is provided. Therefore, it is preferable to provide the detection unit 7 on the side of the housing 2 where the inlet 2a is provided. In this way, for example, the detection sensitivity of the detection unit 7 to odor components can be increased.

[0056] The controller 8 controls the blower 5 based on the value detected by the detector 7 to change the direction in which the ozone-containing gas G is released. For example, the controller 8 causes the blower 5 to release the ozone-containing gas G in the direction detected by the detector 7. Details regarding the release of the gas G will be described later.

[0057] Furthermore, the controller 8 controls at least one of the light processing unit 3 and the ozone generating unit 4 based on the value detected by the detecting unit 7. For example, if the concentration of odor components detected by the detection unit 7 is high, purification can be performed by the light processing unit 3 and the ozone generation unit 4. In this case, the amount of ozone generated by the ozone generation unit 4 can also be increased.

[0058] For example, if the concentration of odor components detected by the detection unit 7 is low, it is possible to reduce the amount of ozone generated by the ozone generation unit 4. It is also possible to stop purification by the ozone generation unit 4 or purification by the light processing unit 3 and perform purification by only one of them.

[0059] Furthermore, if the concentration of odor components detected by the detection unit 7 becomes even lower, purification by the ozone generation unit 4 can be stopped and only purification by the light processing unit 3 can be performed. Purification by the light processing unit 3 does not have the adverse effects on people that ozone does, so purification can continue even if the concentration of odor components is low.

[0060] In this way, if the detection unit 7 is provided, appropriate purification can be performed according to the distribution of the concentration of the target substance contained in the atmosphere and the concentration of the target substance contained in the atmosphere. Also, it becomes easy to keep the ozone concentration in the atmosphere within a predetermined range.

[0061] 1, a plurality of detectors 7 may be provided. In this case, the detectors 7 may be spaced apart from one another in at least one of the X and Y directions. For example, as shown in FIG. 1, if the exterior shape of the housing 2 is a rectangular parallelepiped, a detector 7 may be provided on each of the four side surfaces. Note that a further detector 7 may also be provided inside the housing 2.

[0062] If multiple detectors 7 are provided, the controller 8 can calculate the direction of the source of the object to be purified (e.g., the source of an odor) based on the detection values ​​of the multiple detectors 7. For example, the controller 8 can determine that the source of the object to be purified is in the direction of the detector 7 with the highest detection value of the odor component. In other words, if multiple detectors 7 are provided, the direction in which the ozone-containing gas G is released can be made more appropriate.

[0063] In this case, the direction in which the ozone-containing gas G is released can be changed by changing the angle of the blades of the louver 52 using the control motor 52a described above. Therefore, the controller 8 controls the control motor 52a to release the ozone-containing gas G in the direction in which the source of the object to be purified is determined to be located. In this way, the source of the object to be purified can be efficiently purified, thereby shortening the time required for purification and suppressing the release of excess ozone.

[0064] Furthermore, although the above describes an example in which the detection unit 7 is provided in the housing 2, the detection unit 7 can also be provided at a location remote from the housing 2, as shown in FIG. 1, for example. In this case, the detection unit 7 can be electrically connected to the controller 8 via a wire or wirelessly. The detection unit 7 can be attached, for example, to an object in the atmosphere or to a wall surface. If the location of the source of the target to be purified can be identified in advance, the detection unit 7 can be provided near that location. In this way, the detection sensitivity of the detection unit 7 to odor components can be further improved.

[0065] Furthermore, a plurality of detectors 7 can be provided at positions separated from the housing 2. In this way, the direction of the source of the object to be purified can be determined with high accuracy. The detector 7 provided in the housing 2 and the detector 7 provided at a position separated from the housing 2 can be used in combination.

[0066] Furthermore, a detection unit 71 can be provided instead of or together with the detection unit 7. As shown in FIG. 1, the detection unit 71 can be provided in the housing 2, or can be provided at a location separate from the housing 2. At least one detection unit 71 can be provided. The detection unit 71 can be, for example, an image sensor such as a CCD camera. The detection unit 71 may also be, for example, a laser sensor or an ultrasonic sensor. If the detection unit 71 is provided, it can detect the source of the purification target in a wider area than the detection unit 7.

[0067] The controller 8 can calculate the position of the object that is the source of the object to be purified based on the image captured by the detection unit 71. In this way, the position of the object that is the source of the object to be purified can be determined with high accuracy. Therefore, the controller 8 controls the control motor 52a to release the gas G containing ozone to the position of the object that is the source of the object to be purified. In this way, the object that is the source of the object to be purified can be purified more efficiently, thereby further shortening the time required for purification and further suppressing the release of excess ozone.

[0068] As described above, the direction in which the ozone-containing gas G is released can be changed based on at least one of the concentration of the object to be purified detected by the controller 8, the detection unit 7, and the image of the object to be purified detected by the detection unit 71.

[0069] Furthermore, the controller 8 can control the ozone generating unit 4 based on the concentration of the substance to be purified detected by the detecting unit 7, to change the amount of ozone generated. Furthermore, the controller 8 can execute at least one of purification by the ozone generating section 4 and purification by the light processing unit 3 based on the detected concentration of the substance to be purified.

[0070] Although several embodiments of the present invention have been described above, these embodiments are presented by way of example only and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, etc. can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as set forth in the claims. Furthermore, the above-described embodiments can be implemented in combination with each other. [Explanation of symbols]

[0071] 1 gas treatment device, 2 housing, 2a inlet, 2b outlet, 3 light treatment unit, 4 ozone generation section, 5 air blower section, 7 detection section, 8 controller, 33 photocatalyst section, 34 light source, 51 fan, 52 louver, 52a control motor, 71 detection section

Claims

1. The housing and; an ozone generating unit provided inside the housing and configured to generate ozone; a blower that releases the generated ozone-containing gas to the outside of the housing; a detection unit that detects a target to be cleaned outside the housing; a controller that controls the blower based on the value detected by the detector to change the direction in which the ozone-containing gas is emitted; A gas treatment device comprising:

2. 2. The gas treatment device according to claim 1, wherein the controller changes the direction in which the ozone-containing gas is released based on at least one of the concentration of the object to be purified detected by the detection unit and an image of the object to be purified detected by the detection unit.

3. The gas treatment device according to claim 1 or 2, wherein the controller controls the ozone generator to change the amount of ozone generated based on the concentration of the target substance to be purified detected by the detector.

4. The apparatus further includes a light processing unit provided inside the housing and configured to purify gas flowing inside the housing; 3. The gas treatment device according to claim 1, wherein the controller is further capable of controlling the ozone generating unit and the light treatment unit, and performs at least one of purification by the ozone generating unit and purification by the light treatment unit based on the concentration of the target substance to be purified detected by the detection unit.

5. The gas treatment device according to claim 1 or 2, wherein the detection unit is at least one of an odor sensor and an image sensor.

6. The gas treatment device according to claim 1 , wherein the detection unit is provided at least either in the housing or at a position spaced apart from the housing.

Images