JP6092733B2 - Equipment - Google Patents

Description

  The present invention relates to a deodorizing filter that is assumed to be regenerated by heating and a facility device equipped with the same.

  In the field of gas adsorption filters, various filters having adsorption performance for various gases have been proposed due to their wide range of applications. Various filters that can regenerate the adsorption performance by heating have been proposed on the assumption of long-term use of the filter. Here, when the deodorizing function is mainly considered, examples of the target gas include sulfur compounds, nitrogen compounds, aldehydes, aromatic hydrocarbons, fatty acids, ketones, esters, and the like. As a filter for adsorbing these target gases, it is common to use activated carbon mixed with pores of various sizes. However, since activated carbon cannot desorb and decompose odor components by heating, there is a problem that it is difficult to use multiple times. For such problems, for example, Patent Document 1 discloses that adsorbing performance is enhanced by mixing and adsorbing a highly active manganese compound such as manganese dioxide and an inorganic adsorbent such as zeolite, and oxidative decomposition performance during heating is enhanced. Deodorizing filters have been proposed.

  The deodorization filter of the said patent document 1 can reproduce the deodorizing performance by heating. However, if alcohols are adsorbed on the filter when a filter carrying a large amount of manganese compound and zeolite is heated to a high temperature, these alcohols are not sufficiently decomposed and converted to acetic acid. Re-adsorbed on the surface. And when the re-adsorbed acetic acid reaches adsorption saturation, these are re-released and the filter itself may become a source of sour odor. This can be a fatal defect in the deodorizing filter. However, if the loading of the manganese compound is reduced to prevent this, the adsorption performance of the sulfur compound is greatly reduced, and this time, there is a problem that the sulfur odor mainly composed of hydrogen sulfide cannot be removed and remains. .

Japanese Patent Laid-Open No. 10-137591

  The present invention has been made in view of the problems as described above, and has a sulfur compound removal performance while suppressing the re-release of acetic acid generated during heating of the deodorizing filter, and is equipped with the deodorizing filter that can be regenerated by heating. The purpose is to propose the equipment.

The equipment according to the present invention is a deodorizing filter that can be used repeatedly by performing a performance recovery process by heating ,
A heating mechanism and control means;
A facility device having a function of heating the deodorizing filter to 80 ° C. or higher,
The deodorizing filter is formed by supporting an inorganic adsorbent material configured as an inorganic compound that performs physical adsorption, zinc oxide, and an oxidation catalyst on a base material made of a flame retardant material.
The oxidation catalyst is supported so that the acetic acid conversion rate of alcohol when the deodorizing filter is heated is 15% or less ,
The heating mechanism includes a heater unit that is heated by energization, and a temperature acquisition unit that acquires the temperature of the deodorizing filter,
The control means is connected to the heater unit and the temperature acquisition means,
While the heating mechanism is being driven so that the temperature acquired by the temperature acquisition unit becomes a predetermined temperature, the energization to the heater unit is temporarily stopped, and the deodorization while the energization of the heater unit is stopped When the temperature rise rate of the filter is slower than the temperature rise rate at the time of energizing the heater unit, control to resume energization to the heater unit is performed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the deodorizing filter which has the removal performance of a sulfur compound, and the installation apparatus which mounts it, suppressing the rerelease | release of the acetic acid generated at the time of the heating of a deodorizing filter.

It is a three-plane figure of the equipment concerning an embodiment of the invention, (a) shows a front view, (b) shows a top view, and (c) shows a right side view, respectively. BRIEF DESCRIPTION OF THE DRAWINGS It is a three-view figure of the state which removed the front panel, the pre filter, and HEPA filter which are mentioned later from the equipment which concerns on embodiment of this invention, (a) is a front view in the figure, (b) is a top view, (C) has shown the right view, respectively. It is a disassembled perspective view of equipment. It is the longitudinal cross-sectional view which cut | disconnected the equipment in FIG. 1 by YY. It is the perspective view which looked at the equipment from the front. It is the perspective view which looked at the equipment from back. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the deodorizing part of the equipment which concerns on embodiment of this invention, (a) is the perspective view which looked at the deodorizing part from the front, (b) is the perspective view which looked at the deodorizing part from back. , Respectively. It is a figure which shows the heating unit of the installation equipment which concerns on embodiment of this invention, (a) is a back view, (b) is the longitudinal cross-sectional view which cut | disconnected the heating unit in (a) in the ZZ cross section. Respectively. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the heating unit of the equipment which concerns on embodiment of this invention, (a) is the perspective view which looked at the heating unit from the back surface, (b) is the perspective view which looked at the heating unit from the surface. Each is shown. It is a time chart which shows the heating temperature in the deodorizing performance recovery operation | movement of a deodorizing element, and the operation state of a heater unit.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described with reference to the drawings.

  FIG. 1 is a three-side view of equipment A according to an embodiment of the present invention, in which (a) shows a front view, (b) shows a plan view, and (c) shows a right side view. ing. FIG. 2 is a three-sided view of a state in which a front panel, a prefilter, and a HEPA filter, which will be described later, are removed from the equipment A according to the embodiment of the present invention, where (a) is a front view and (b) is a front view. A plan view and (c) show a right side view, respectively. FIG. 3 is an exploded perspective view of the equipment A. 4 is a longitudinal sectional view of the equipment A in FIG. 1 cut along YY. Moreover, FIG. 5 is the perspective view which looked at the equipment A from the front. Further, FIG. 6 is a perspective view of the equipment device A as viewed from the rear. Hereinafter, the structure relevant to the outline of the equipment A will be described with reference to FIGS. 1 to 6 as appropriate.

  The equipment A as an air purifier according to the present embodiment includes a main body case C that forms an outer shell, and various functional components such as a deodorizing unit 60 provided in the main body case C. The main body case C has a box shape formed of resin, and is composed of a plurality of parts such as the front panel 10, the front case 20, and the rear case 40. Hereinafter, the configuration of these components will be described in detail.

  The front case 20 has a rectangular shape when viewed from the front, and a frame-like frame 21 having a predetermined depth width serves as a base. A rectangular front opening 22 is formed on the front surface of the frame 21, and the rear opening is covered with a partition plate 23. The partition plate 23 is formed with a circular rear opening 24 that opens rearward. That is, the front case 20 is in a state where the front opening 22 and the rear opening 24 communicate with each other. The rear opening 24 of the partition plate 23 forms a bell mouth around a fan opening 44d of a blower fan 44 described later.

  A lower protruding portion 25 is formed on the lower side of the frame 21 of the front case 20 by protruding forward from the two left and right sides as a whole. Further, an upper protruding portion 28 that protrudes forward from the two left and right sides is formed on the upper side of the frame 21. On the upper front side of the upper side of the frame 21, an operation unit 26 including a plurality of operation buttons and LEDs forming a display unit is provided.

  The front panel 10 has a rectangular shape when viewed from the front, and is configured to cover the front opening 22 of the front case 20 from the front. Further, an air suction port 11 communicating with the front panel 10 in the front-rear direction is formed on the front surface of the front panel 10 by forming a slit extending in the left-right direction. That is, the front panel 10 has air permeability so that air can flow through in the front-rear direction.

  The rear case 40 has a rectangular shape when viewed from the front, has a front opening 41 on the front surface, an opening serving as an air outlet 42 on the upper surface, and a rear surface 43 closed. . On the rear surface 43, a blower fan 44, which is a blower means for taking room air into the air purifier, and a swirl-shaped partition plate that forms an air passage that guides the air flowing down from the blower fan 44 to the blower outlet 42. 45 is provided. Further, a controller 47 that controls each part of the equipment A based on a predetermined program is provided below the partition plate 45 and in a space formed by the rear case 40 and the partition plate 45. Furthermore, a louver 46 for changing the air direction of the air blown out from the air outlet 42 into the room or closing the air outlet 42 is provided in the vicinity of the air outlet 42 at the upper part inside the rear case 40. Yes. In addition, the opening part of the blower outlet 42 is attached with a lattice so that the louver 46 cannot be touched directly.

  The blower fan 44 is configured as a multi-blade fan (sirocco fan) in which a large number of blades 44a having a predetermined width with respect to the rotation direction are attached to a position having a predetermined radius from the rotation shaft. A motor 44b for rotationally driving the wings 44a is attached to the rear surface 43 of the rear case 40 so that the rotation shaft 44c is directed forward and extends in the horizontal direction.

  The partition plate 45 is erected substantially vertically from the rear surface 43 of the rear case 40 so as to surround the blower fan 44, with one end at the right end 42 a of the air outlet 42 and the other end at the left end 42 b of the air outlet 42. It is connected. That is, the partition plate 45 is disposed in the rear case 40 so as to surround the blower fan 44 and to have an end portion that opens from the air outlet 42 to the outside.

  Next, with reference to FIG. 7, the structure relevant to the deodorizing part 60 is demonstrated. FIG. 7: is a perspective view of the deodorizing part of the equipment which concerns on embodiment of this invention, (a) is the perspective view which looked at the deodorizing part from the front, (b) is the deodorizing part seen from back. Each perspective view is shown. As shown in FIG. 7, the deodorization part 60 is a site | part which removes an odor from the inside of air by allowing the indoor air taken in the inside of the equipment A to pass through. The deodorizing unit 60 includes a frame 61 serving as a base on which various parts are provided, a deodorizing element 62, a heating unit 63 that locally heats the deodorizing element 62, and a heating unit 63 and a deodorizing element that are moved by moving the deodorizing element 62. Drive means 64 which is a position changing means for changing the relative positional relationship between the opposing parts.

  Next, the structure of the deodorizing element 62 which is the principal part of this invention is demonstrated. The deodorizing element 62 is a deodorizing filter configured by applying or impregnating a disc-shaped base material with an adsorbent such as zeolite and zinc oxide. Zeolite is excellent in physical adsorption of carbon compounds such as N-based components and VOCs, and has the ability to desorb gas components adsorbed by heating. Moreover, since oxidative decomposition of the adsorbed gas does not occur by heating, even when alcohol is adsorbed, it can be effectively suppressed that these are released as acetic acid. In addition, although zinc oxide has a smaller surface area than zeolite and has a small adsorption capacity, it functions effectively as an adsorbent for sulfur compounds such as hydrogen sulfide and methyl mercaptan. Moreover, since the oxidative decomposition of the adsorbed gas is not caused by heating as in the case of zeolite, the release of acetic acid can also be suppressed. Therefore, by mixing these two in combination, it is possible to form a deodorizing filter capable of removing sulfur compounds and regenerating by heating without necessarily using a catalyst such as platinum or manganese oxide having oxidation ability. .

  In addition, the base material used for the deodorizing element 62 preferably has a honeycomb core or corrugate shape in which a plurality of openings are formed, such as a honeycomb opening. The base material is preferably a material such as ceramic, aluminum or stainless steel that does not cause combustion or ignition by heating. This is because it is assumed that the deodorizing element 62 according to the present embodiment performs a deodorizing performance recovery operation by heating. In addition, by having a plurality of openings, the heated air can be conveyed in and the inside can be warmed, the surface area per volume can be increased, and the amount of adsorbent, catalyst, and zinc oxide supported can be increased. I can do it.

  The adsorbent is preferably an adsorbent that is an inorganic binder and is made of zeolite, silica, or the like. Particularly suitable as an adsorbent for use in the present invention is a zeolite having an adjusted ratio of silica and alumina, and it is preferable that more silica is blended than alumina. Moreover, it is preferable that the adsorbent has a hydrophobic property. Since acetic acid mainly has a property of dissolving in water, there is a possibility that acetic acid is released together with water when water adheres to the deodorizing element 62 itself. Therefore, rerelease of acetic acid can be effectively suppressed by making the adsorbent zeolite hydrophobic. Further, the adsorbent is preferably made of a material that does not cause combustion or ignition due to heating, like the base material.

  It is preferable that zinc oxide occupies a ratio of 1% or more of the entire supported material by weight. In order to feel a difference in odor in human sense, it is necessary to reduce at least 0.5 by the value of odor intensity (a value obtained by quantifying the amount of human sensation defined by the Malodor Control Law). As this index, for example, in the case of hydrogen sulfide, it is sufficient that hydrogen sulfide existing in the air can be removed with a probability of 30 to 40%. This differs depending on the gas component, but if it is possible to remove it with a probability of at least 60% when considering a sulfur compound, which is a typical malodorous component, the odor will be felt as a human sensation. Can do. If the ratio of the amount of zinc oxide supported is 1% (weight ratio) or more, the above odor reduction index can be achieved.

  As described above, the deodorizing element 62 of the present embodiment does not necessarily require a catalyst, but may be configured to be coated or impregnated with a catalyst in order to obtain a further deodorizing effect. In this case, a catalyst having a property of adsorbing an odor component (particularly ammonia odor) and oxidizing and decomposing the odor component by heating, such as a catalyst using platinum or manganese. As such a catalyst, for example, a manganese oxide such as manganese dioxide is preferable.

Manganese oxide functions as an adsorbent in addition to the catalytic action of oxidizing and decomposing adsorbates by heating. For this reason, the re-release of the adsorption odor at the time of a heating can be suppressed by oxidizing and decomposing the adsorbed substance into an odorless substance. However, when alcohol components are adsorbed on the deodorizing element 62, they are converted into acetic acid at a high rate depending on the temperature condition to be heated. In this case, acetic acid is released to the outside at a high concentration, and the equipment itself may become a source of sour odor. Therefore, the amount of catalyst supported is preferably adjusted according to its oxidative decomposition performance. Specifically, the amount is preferably adjusted so that the acetic acid conversion efficiency by the oxidation reaction that occurs during heating in the deodorizing element 62 is suppressed to 15% or less under predetermined heating conditions. Here, the acetic acid conversion rate is defined by the following equation.
(Acetic acid conversion rate) = (Amount of acetic acid produced during heating) / (Amount of ethanol adsorbed)

  These values can be obtained by measuring the amount of acetic acid generated when a heat regeneration operation is performed in a predetermined heat regeneration program after ethanol is adsorbed to the deodorizing element 62. By performing the acetic acid heat regeneration program several tens to several hundreds of times, when the adsorption, desorption and regeneration are repeated at a specific rate, the amount of acetic acid re-released converges to a constant value. When the converged amount of acetic acid exceeds 1 ppm with respect to the volume of the deodorizing element 62, that is, the odor intensity 2 (value obtained by quantifying the amount of human sensation determined by the malodor control method), a sour odor is generated from the deodorizing element 62. Start to feel. By setting this numerical value to 15% or less, the amount of acetic acid that converges can be suppressed to an odor intensity of 2 or less. Here, the amount of loading was defined by the acetic acid conversion rate because the value indicating the user's discomfort was determined by the acetic acid conversion rate, and “mainly hydrogen sulfide without re-releasing acetic acid. This is because “to remove sulfur compounds” is an object of the present invention. The amount of acetic acid and the amount of alcohol adsorbed during heating vary depending on the use conditions of the user, such as the type and loading of the catalyst and heating conditions. Therefore, it is difficult to fix. However, by defining the acetic acid conversion rate in accordance with the use conditions as described above, it becomes possible to remove the sour odor, that is, the discomfort due to the generation of acetic acid, as a deodorizing element 62 and, as a result, equipment equipped with it. .

  An opening 62c is formed at the center of the deodorizing element 62, and an element frame 62a formed of stainless steel for holding the deodorizing element 62 is provided on the front surface. Here, as described above, the deodorizing element 62 has a honeycomb core shape, and a predetermined opening is formed in the element frame 62a provided on the front surface, so that the inside of the deodorizing element 62 penetrates in the front-rear direction. Air can flow.

  Next, with reference to FIG.8 and FIG.9, the structure of the heating unit 63 is demonstrated. FIG. 8 is a diagram showing a heating unit of the equipment according to the embodiment of the present invention, in which (a) is a back view, and (b) is a cutting of the heating unit in (a) along a ZZ cross section. The longitudinal sectional views are shown respectively. FIG. 9 is a perspective view of the heating unit of the equipment according to the embodiment of the present invention, in which (a) is a perspective view of the heating unit viewed from the back surface, and (b) is the surface of the heating unit. The perspective view seen from each is shown.

  As shown in these drawings, the heating unit 63 includes a heater unit 63a that is a heating means for heating the deodorizing element 62, and a case 63b that forms a predetermined internal space for housing the heater unit 63a therein. Has been. The heater unit 63a is electrically connected to the control unit 47 and is energized and controlled according to the operating state of the equipment device A. The heater unit 63a includes a plate-like heat generating part 63f and a heater part 63g for heating the heat generating part 63f. In addition, the heater part 63g uses what the heating stop is switched by turning ON / OFF the electricity supply to the said heater part 63g. The heater unit 63a can raise the facing portion of the deodorizing element 62 that is disposed to face the heater unit 63a with a predetermined gap to a predetermined temperature at which the odor adsorbed on the deodorizing element 62 can be removed. The heating capacity and energization time are set.

  The case 63b is formed with a concave portion 63c for holding the heater unit 63a therein and a flange portion 63d extending from the opening periphery of the concave portion 63c. The recess 63c has a fan shape that matches the planar shape of the heater unit 63a, and the heater unit 63a is provided with the heater unit 63a facing the opening of the recess 63c. The flange portion 63d is formed with a screw hole 63e for allowing the screw to pass therethrough when the heating unit 63 is attached to a predetermined position.

  The front panel 10, the front case 20, the rear case 40, and the deodorizing unit 60, each of which is configured as described above, are assembled together with other functional components as follows, so that the equipment A is configured.

  As shown in FIG. 3, the rear case 40 is attached to the rear surface of the front case 20 with the front opening 41 facing forward. At this time, the fan opening 44 d of the blower fan 44 provided in the rear case 40 is in a positional relationship facing the rear opening 24 formed in the partition plate 23 provided in the front case 20. The opening center of the rear opening 24 coincides with the axial center of the rotating shaft of the blower fan 44 in the front-rear direction.

  Further, the deodorizing unit 60 is configured such that the frame 61 is inserted into the front case 20 from the front opening 22 of the front case 20, and the outer periphery of the frame 61 is held inside the front case 20. Mounted on. Thus, in the state where the deodorizing part 60 is attached to the front case 20, the rear surface side (position side where the heating unit 63 is attached) of the deodorizing part 60 is disposed so as to face the rear opening 24 of the front case 20. Is done. As a result, the heating unit 63 is positioned between the deodorizing element 62 and the rear opening 24.

  Here, as shown in FIG. 4, the partition plate 23 and the rear opening 24 of the front case 20 forming the bell mouth around the fan opening 44 d of the blower fan 44 flow from the deodorizing element 62 to the rear opening 24. In order not to obstruct the flow, it is opposed to the deodorizing element 62 with a predetermined distance D. The heating unit 63 is located at the part of the interval D formed in this way.

  Further, as shown in FIG. 3, the HEPA filter 12 having the same size as the opening of the frame body 61 is provided inside the frame body 61 of the deodorizing unit 60 attached to the front case 20. . The HEPA filter 12 is a filter for removing fine dust such as pollen, mite droppings, mold spores, and house dust contained in the air. A prefilter 13 is provided on the front side of the HEPA filter 12 so as to cover the HEPA filter 12. The prefilter 13 is a coarse filter for removing large dust contained in the air in advance before filtering the air with the HEPA filter, and is for maintaining the effect of the HEPA filter for a long period of time. The front panel 10 is provided on the front side of the prefilter 13 so as to be sandwiched between the upper projecting portion 28 and the lower projecting portion 25 of the front case 20. Thus, the equipment A is comprised by assembling the front panel 10, the prefilter 13, the HEPA filter 12, the deodorizing part 60, the front case 20, and the rear case 40. FIG.

  Next, the operation of the air cleaning operation by the equipment A configured as described above will be described. As shown in FIG. 4, a ventilation path R is formed inside the equipment A so as to take in room air, clean and deodorize the air, and discharge it into the room. This ventilation path R is demonstrated along the air-cleaning driving | running state of the equipment A, and the flow of the air taken in inside.

  First, when the user operates the operation unit 26 and inputs are made to the control unit 47, a predetermined program for operating the equipment A is executed. When the above operation is started, the blower fan 44 is driven, a suction force for taking in room air from the suction port 11 into the equipment A is generated, and the room air flows into the suction port 11. The air taken in from the suction port 11 flows backward in the equipment A, and after the large dust is removed by the pre-filter 13, fine dust is removed by the HEPA filter 12.

  Next, the air from which the dust has been removed flows further rearward and reaches the deodorizing unit 60, passes through the opening 65a, and reaches the deodorizing element 62 disposed at a position facing the opening 65a. The deodorizing element 62 has a large number of honeycomb-shaped openings from the front surface to the back surface, and is coated or impregnated with zeolite and zinc oxide as adsorbents that adsorb odors on the surface.

  Therefore, when the odor-containing air passes from the front side to the back side of the deodorizing element 62, it passes through the honeycomb-shaped opening, and the adsorbent applied to the deodorizing element 62 adsorbs the odor contained in the air. As a result, odor is removed from the air. Note that “the odor is removed from the air” includes not only a state in which the odor is completely removed from the air but also a state in which the odor is reduced from the state before the air passes through the deodorizing element 62. Here, by continuing to operate the equipment A as described above, the adsorbed odor is accumulated in the deodorizing element 62, and the deodorizing ability of the deodorizing element 62 decreases as the adsorbed odor increases. I will do it.

  Next, the air from which the dust and odor have been removed flows further rearward from the deodorizing element 62, passes through the rear opening 24 that opens in the partition plate 23 of the front case 20, and is disposed to face the rear opening 24. It flows to the blower fan 44. The air flowing to the blower fan 44 flows from the front of the blower fan 44 in the axial direction to the inside of the fan opening 44d surrounded by the wings 44a, and into the radial direction of the blower fan 44 including the upper part of the blower fan 44. The air is discharged outside the blower fan 44.

  The air discharged from the blower fan 44 is guided to the air outlet 42 by the partition plate 45 of the rear case 40, and the air direction is adjusted when passing through the louver 46. The air is blown out as clean air from the inside of the equipment A toward the direction.

  Note that the front surfaces of the deodorizing element 62, the pre-filter 13, the HEPA filter 12, and the fan opening 44 d of the blower fan 44 are arranged in a direction perpendicular to the direction of the air flowing through the ventilation path R. As a result, the flow of air until it passes through the deodorizing element 62t becomes straight, so that the air hits each filter surface vertically and the air flow is good.

  When the air cleaning operation (deodorizing operation) is performed for a long time, the deodorizing element 62 adsorbs a lot of odors and the deodorizing performance gradually decreases. In the equipment A of this Embodiment, when the deodorizing performance of the deodorizing element 62 falls, the deodorizing performance recovery operation | movement for recovering this is performed. Hereinafter, the deodorizing performance recovery operation will be described in more detail.

  The controller 47 performs the deodorizing performance recovery operation of the deodorizing element 62 at a predetermined timing. As the predetermined timing, for example, a timing at which the cumulative operation time from the start of operation or the completion of the previous deodorizing performance recovery operation exceeds a predetermined time (preferably a timing of once or more in 24 hours) can be considered.

  When the deodorizing performance recovery operation is started, the control unit 47 energizes the heater unit 63 a of the heating unit 63. Thereby, the heater unit 63a generates heat, and the temperature of the part of the deodorizing element 62 facing the heater unit 63a is maintained at a predetermined temperature for a predetermined time. The temperature and time of the deodorizing element 62 in the deodorizing performance recovery operation is preferably set to a temperature and time sufficient to remove the odor adsorbed on the deodorizing element 62. At this time, since the heating unit 63 and the deodorizing element 62 are opposed to each other through air, a difference occurs between the temperature input to the heating unit 63 and the temperature of the deodorizing element 62. This is because it is cooled by the air layer, and it is necessary to set the temperature after taking this into consideration. Note that the minimum condition for the temperature of the deodorizing element 62 in the deodorizing performance recovery operation is 80 ° C. or higher. This is because the deodorizing element 62 cannot be regenerated in the equipment A unless this condition is satisfied.

  Further, it is preferable that the blower fan 44 continues to operate even during the deodorizing performance recovery operation. While the heating unit 63 is operating, a part of the odor component to be desorbed remains in the heating unit 63 and re-adsorbs to the deodorizing element 62. Here, by operating the heating unit 63 while operating the blower fan 44, the heating regeneration by the heating unit 63 can be performed more efficiently, and as a result, the re-release of acetic acid is prevented and the hydrogen sulfide removal performance is enhanced. Can do. Furthermore, heated air can also be conveyed to the inside of the deodorizing element 62 by blowing air, and heating efficiency can be improved.

  In the deodorizing performance recovery operation, even when the temperature of the deodorizing element 62 exceeds the minimum temperature in the temperature range suitable for removing the odorous component adsorbed on the adsorbent (hereinafter referred to as “attention temperature”). In order to efficiently restore the function of the adsorbent, it is preferable to perform the following control. FIG. 10 is a time chart showing the heating temperature and the operating state of the heater unit 63a in the deodorizing performance recovery operation of the deodorizing element 62.

  In the operation shown in this figure, when the temperature of the heating part of the deodorizing element 62 is raised to the predetermined temperature α in the deodorizing performance recovery operation, the heater unit 63a is used until the temperature of the deodorizing element 62 is raised to the predetermined temperature α. The heating of the deodorizing element 62 is interrupted by temporarily stopping energization of the deodorizing element 62 a plurality of times. The stoppage of energization is performed, for example, when the preset temperatures a and b reached in advance until the predetermined temperature α is reached. When the heating is interrupted, the temperature is detected by a temperature detecting means (not shown) such as a thermistor disposed in the heating unit 63 to confirm that there is no sudden temperature rise.

  Note that the rapid temperature rise here means that when the heater unit 63a that rises by 3 to 5 ° C. per 10 seconds, for example, is used, the temperature detected by the temperature detecting means rises at a rate equal to or higher than the above. Pointing to do. Since the deodorizing element 62 is heated by the heater unit 63a, normally, a temperature rise due to residual heat may occur at the stage where the energization to the heater unit 63a is stopped, but the deodorizing element 62 increases at a rate higher than that at the time of energizing the heater unit 63a. Heating is unlikely to occur. Therefore, when such a temperature rise is detected, the heating unit 63 is immediately stopped, the regeneration operation is terminated, and an error message is transmitted to the user for notification. When a sudden temperature rise is not detected, energization to the heater unit 63a is resumed. Even after reaching the predetermined temperature α, energization to the heater unit 63a is stopped and energization is stopped until the elapse of the predetermined time α ′, and an abrupt temperature rise detection operation (after stopping energization to the heater unit 63a, whether or not there is a rapid temperature increase) Detecting action) is repeated. In this way, by suppressing the heating temperature to a specified temperature, it is possible to suppress the oxidation reaction and suppress excessive release of acetic acid.

  The length of the predetermined time α ′ is determined in consideration of the temperature of the environment in which the equipment A is used, the odor to be deodorized, whether or not the catalyst is attached to the deodorizing element 62, and the type thereof, and the start time thereof is The deodorization performance recovery operation is started or when the predetermined temperature α is reached, and the end time is the end of the deodorization performance recovery operation.

  In the above-described embodiment, the air cleaner has been described as an example of the equipment A, but the equipment to which the present invention can be applied is not limited to the air cleaner, and any other equipment provided with a deodorizing element. It may be used for equipment that operates under conditions.

  In the above-described embodiment, the temperature of the deodorizing element 62 is controlled to a predetermined set temperature by turning on and off the energization of the heater unit 63g of the heater unit 63a, but barium titanate is added to the heater unit 63g. A PTC heater which is a semiconductor ceramic as a main component may be used. Since the PTC heater has self-temperature controllability and does not require external temperature control, stable temperature control can be realized without performing intermittent control unlike a thermostat.

A equipment, C body case, R ventilation path, 10 front panel, 11 suction port, 12 HEPA filter, 13 pre-filter, 20 front case, 21 frame, 23 partition plate, 26 operation part, 40 rear case, 42 outlet 44 Fan, 45 Partition plate, 46 Louver, 47 Control unit, 60 Deodorizing unit, 61 Frame, 62 Deodorizing element, 63 Heating unit, 64 Drive means, 65 Middle partition plate

Claims (6)

A deodorizing filter that can be used repeatedly by performing performance recovery treatment by heating ,
A heating mechanism and control means;
A facility device having a function of heating the deodorizing filter to 80 ° C. or higher,
The deodorizing filter is formed by supporting an inorganic adsorbent material configured as an inorganic compound that performs physical adsorption, zinc oxide, and an oxidation catalyst on a base material made of a flame retardant material,
The oxidation catalyst is supported so that the acetic acid conversion rate of the alcohol when the deodorizing filter is heated is 15% or less,
The heating mechanism includes a heater unit heated by energization,
And a temperature acquisition means for acquiring the temperature of the deodorizing filter,
The control means includes
Connected to said temperature obtaining means and the heater unit,
While driving the heating mechanism , the energization to the heater unit is temporarily stopped and the energization to the heater unit is performed so that the temperature acquired by the temperature acquisition unit becomes a predetermined temperature. rate of temperature rise of the deodorizing filter in the stop, if slower than the temperature rise rate at the time of energization of the heater unit, performs resume control energization of the heater unit, set備機device. The equipment according to claim 1, wherein the base material is made of stainless steel, aluminum, or ceramic as a raw material. The equipment according to claim 1 or 2, wherein the inorganic adsorbent is made of zeolite as a raw material. The equipment according to any one of claims 1 to 3, wherein the loading amount of the zinc oxide occupies a weight ratio of 1% or more of the loading amount of the entire loaded material. The equipment according to any one of claims 1 to 4, wherein the inorganic adsorbent is a hydrophobic zeolite prepared from silica and alumina, and contains more silica than alumina. The equipment comprises a blower with aeration deodorizing filter, together with the operation of the heating mechanism, according to any one of claims 1 to 5 perform the ventilation air to the deodorizing filter by driving the blower Equipment equipment.

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