JP2007105215A - Deodorizer, and deodorizing device and air conditioner using deodorizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transfer harmful acetaldehyde being the main component and being one kind of a VOC to less harmful acetic acid and to adsorb and remove it though a conventional platinum-based catalyst has the problem that its operation temperature is high, so that it cannot be applied to an air conditioner, an air purifier, etc., and a photocatalyst has the problem that its deodorization speed is slower than that of an adsorbent etc., that a light source is required, so that its sizes cannot be reduced and costs are high, and that impact resistance is low. <P>SOLUTION: The deodorizer is composed of the adsorbent 4 having a physical adsorption and and an oxide 5 containing cobalt and having a catalytic action. An odor occurring in a living space can be adsorbed and removed with the adsorbent 4 having the physical adsorption. In particular, the harmful acetaldehyde is transferred to the acetic acid at normal temperature with an oxide catalyst containing cobalt and adsorbed and removed with the adsorbent. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention can adsorb and remove odorous substances contained in the gas of living spaces such as rooms and cars, and in particular converts the highly harmful acetaldehyde, which is a main component of tobacco and also a kind of VOC, into less harmful acetic acid, The present invention relates to a deodorizing body capable of adsorbing and removing it, a deodorizing device using the deodorizing body, and an air conditioner.

Conventionally, a platinum-based thermal catalyst that operates a catalyst using a white metal at a high temperature (200 ° C. or higher) and decomposes odorous substances into water, carbon dioxide, and the like is widely known. Patent Document 1 discloses a deodorizing catalyst using a composite oxide of transition metal mainly composed of manganese. According to this, 80% of acetaldehyde is decomposed at 50 ° C. by the complex oxide of manganese and cobalt. Furthermore, Patent Document 2 and Patent Document 3 are disclosed as photocatalyst deodorizing filters in which a photocatalyst is supported on a carrier having a large specific surface area as an odor decomposition catalyst at room temperature.
Japanese Patent Laid-Open No. 10-180108 JP-A-6-343875 JP 2003-53196 A

  However, the conventional platinum-based catalyst and the deodorizer disclosed in Patent Document 1 have a problem that the operating temperature is high and cannot be applied to an air conditioner or an air cleaner, and the photocatalyst is deodorized as compared with an adsorbent or the like. There are problems such as a low speed, a size that cannot be reduced because a light source is required, a high cost, and a low impact resistance.

  The present invention solves the above-described conventional problems, and can remove odors generated in living spaces such as rooms and cars by an adsorbent having a physical adsorption action, and particularly oxidizes harmful acetaldehyde based on Co3O4 as a main component. An object of the present invention is to provide a deodorizing body which can be converted to acetic acid at room temperature by a physical catalyst and adsorbed and removed by an adsorbent having a physical adsorption action.

  The present invention solves such a problem, and comprises an adsorbent having a physical adsorption action, an oxide containing cobalt and having a catalytic action, and a carrier carrying the adsorbent and the oxide. The deodorizer is characterized in that the oxide converts aldehydes to carboxylic acids and then adsorbs and removes with the adsorbent, and has a physical adsorption effect on odors generated in living spaces such as rooms and cars. A deodorizing body that can be adsorbed and removed by the adsorbent, and that can convert particularly harmful acetaldehyde to acetic acid at room temperature by the catalytic action of an oxide mainly composed of Co3O4 and can be adsorbed and removed by the adsorbent can be realized.

  The deodorizing body of the present invention is capable of adsorbing and removing odors generated in living spaces such as rooms and cars, and in particular to provide a deodorizing body that can convert harmful acetaldehyde into less harmful acetic acid at room temperature and can be adsorbed and removed. it can. Moreover, the deodorizing apparatus of this invention can control adsorption / desorption automatically without bothering a person's hand, and can provide the deodorizing apparatus which can be used for a long term without a maintenance. Further, the air conditioner of the present invention is an air conditioner having a deodorizing function that allows deodorization from the adsorbent by allowing high-temperature air to pass through the deodorant carrying the adsorbent, and is maintenance-free and can be used for a long time. Can be realized.

  A first invention is composed of an adsorbent having a physical adsorption action, an oxide containing cobalt and having a catalytic action, and a carrier supporting the adsorbent and the oxide, wherein the oxide contains an aldehyde. It is a deodorant characterized by being adsorbed and removed by the adsorbent after conversion to carboxylic acid, and it can adsorb and remove odors generated in living spaces such as rooms and cars with an adsorbent having a physical adsorption action, especially It is possible to realize a deodorant that can convert harmful aldehydes to carboxylic acid at room temperature by the catalytic action of an oxide containing Co3O4 as a main component, and can be adsorbed and removed by an adsorbent.

  According to a second aspect of the present invention, the adsorbent is a hydrophobic zeolite. The deodorizer according to claim 1, wherein the zeolite having an increased silica content has a small polarity, and thus can adsorb non-polar odor molecules. Moreover, since it becomes possible to adsorb and desorb odor molecules without depending on the humidity of the atmosphere, it is possible to realize a deodorizing body capable of adsorbing and removing various odor molecules.

  According to a third aspect of the present invention, there is provided a deodorizing body according to claim 1, wherein the carrier is a honeycomb structure composed of organic fibers. The impact resistance is high, the airflow resistance is small, and the specific surface area is large. Suppressing and deodorizing body with high odor absorption and desorption efficiency and strong impact can be realized.

According to a fourth aspect of the present invention, there is provided the deodorizer according to claim 1 or 2, wherein at least the oxide is supported on the surface of the adsorbent. The dispersibility of the oxide having a catalytic action is further increased, and the specific surface area is increased. Deodorant with high conversion rate to carboxylic acid because the oxide surface can be cleaned by quickly moving the carboxylic acid generated by conversion to the adsorbent because it is close to the adsorbent. Can be realized.
According to a fifth aspect of the present invention, the carboxylic acid adsorbed on the adsorbent is desorbed by aeration to form a deodorizing body according to claim 1 or claim 2 that supports zeolite that is easily adsorbed and desorbed. By passing the air through the deodorized body, the zeolite that has reached saturation adsorption is desorbed and regenerated, and a maintenance-free deodorized body that can be used for a long time can be realized.

  According to a sixth aspect of the present invention, the oxide has a spinel structure. The deodorizer according to claim 1 or 4, wherein the spinel structure oxide catalyst oxidizes aldehydes to form a rock salt structure. The rock salt type structure is oxidized by oxygen in the air and returns to the spinel type structure, and the catalytic action is exerted by repeating it. Therefore, by selecting the spinel type structure, the ability to convert aldehydes to carboxylic acid is high, and to carboxylic acid A deodorizing body with a high conversion rate can be realized.

  The seventh invention is such that the sodium and potassium components in the oxide are less than 1 wt%, and the deodorizing body according to any one of claims 1, 4, and 6, wherein sodium, potassium, etc. are in a cation state In this case, the deodorizing body capable of efficiently converting aldehydes to carboxylic acids can be realized by reducing the amount thereof because it inhibits electron transfer and lowers the catalytic action.

  According to an eighth aspect of the present invention, the aldehyde is acetaldehyde and the carboxylic acid is acetic acid. The deodorizing body according to claim 1, wherein the acetaldehyde has a carcinogenicity contained in a large amount of adhesives for tobacco and building materials. It is a harmful substance that is said to have, and it can be converted into acetic acid that is less harmful, and a deodorized body that can be removed by zeolite can be realized.

According to a ninth aspect of the present invention, there is provided an intake port for introducing air containing at least odor, an intake means for taking in air containing the odor, a filter for deodorizing odor contained in air taken in by the intake means, and the filter. The deodorizing device according to any one of claims 1 to 8, further comprising an introduction port for introducing the deodorized air into the room or the vehicle and an exhaust port for exhausting the odor desorbed from the filter to the outside or the outside of the vehicle. The deodorizing device is a body, and by ventilating the deodorizing body carrying the adsorbent, the odor desorbed from the adsorbent that has reached the saturated adsorption is exhausted to the outside of the room or outside of the vehicle. A deodorizing device that can be used can be realized.

  In a tenth aspect of the present invention, an indoor heat exchanger, an indoor fan for sending out air whose temperature is adjusted by the indoor heat exchanger, and an odor contained in the sucked air are introduced into a ventilation path extending from the suction portion to the blowout portion. Provided with a cleaning operation function that includes a deodorizing filter, heats the indoor heat exchanger during air conditioning operation stop of the air conditioner, and circulates at least part of the air heated by the indoor heat exchanger in the indoor unit, The filter is an air conditioner that is the deodorizer according to any one of claims 1 to 8. By ventilating high-temperature air through the deodorizer carrying the adsorbent, the odor is desorbed from the adsorbent, and an air conditioner having a deodorizing function that can be used for a long time without maintenance can be realized.

  An eleventh aspect of the invention is the air conditioner according to claim 10, which has an exhaust function for exhausting the air in the indoor unit ventilation path to the outside, and operates the exhaust means during or after the cleaning operation. It is. By allowing high-temperature air to pass through the deodorizer carrying the adsorbent and exhausting the odor desorbed from the adsorbent to the outside of the room, it is possible to further alleviate or prevent the indoor environment from being significantly impaired by the desorbed odor component.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Fig.1 (a) is an external appearance schematic diagram which shows the deodorizing body in the 1st Embodiment of this invention, (b) is an enlarged schematic diagram of the deodorizing body surface. The deodorizing body 1 is a honeycomb structure in which flat plates and corrugated plates made of organic fibers such as polyester fibers and cellulose fibers typified by polyethylene terephthalate are used as the carrier 3 and has a low ventilation resistance in the ventilation direction 2. Can ventilate.

  The support 3 has an adsorbent 4 having a physical adsorption action (hereinafter referred to as a physical adsorbent 4 in the present embodiment) and an oxide 5 having a catalytic action (hereinafter referred to as a catalyst oxide 5 in the present embodiment) on the surface. To carry. The physical adsorbent 4 and the catalyst oxide 5 are supported by being bonded to the support 3 by an action such as an anchor effect or a physical bond or a chemical bond. At this time, it is preferable to add a binder to enhance the effect. However, if the addition amount is large, it may cause a decrease in the adsorption effect and catalytic activity, and if it is small, the adhesion with the carrier 3 is lowered and the film is easily peeled off. Desirably, the solid content of the physical adsorbent 4 and the binder is about 1: 1 to 20: 1 by weight ratio. In addition, as inorganic binders, colloidal silica and aluminum phosphate from which sodium and potassium components are removed as much as possible are suitable. As organic binders, resin particles such as vinyl acetate, acrylic, ethylene, vinyl alcohol, and modified urethane are used in water. Alternatively, it is desirable to use an aqueous emulsion adhesive in which copolymer resin particles made of these resins are dispersed. This organic binder increases the concentration of resin particles and copolymer resin particles by evaporating water, and the surfaces of these particles start to stick to each other, and the particle surfaces melt together to form a coating. Is demonstrated. Thus, since it becomes a resin film, it is excellent in processability even after being supported on the organic fiber, but also has a disadvantage that the catalyst performance is inferior to that of the inorganic binder.

As the physical adsorbent 4, a substance having a physical adsorption action such as zeolite, silica gel, sepiolite, alumina, activated carbon or the like is used. However, a zeolite having a fast adsorption / desorption rate of an odorous substance is most desirable. It is preferable to use a hydrophobic zeolite having a small particle size. As a result, non-polar odor molecules can be adsorbed, and the odor molecules can be adsorbed and desorbed without depending on the humidity of the atmosphere, so that a deodorant capable of adsorbing and desorbing various odor molecules can be realized. In addition, it is desirable to use zeolite or sepiolite from which sodium and potassium components are removed as much as possible. This improves the conversion rate of aldehydes to carboxylic acids.

  The hydrophobic zeolite used in the present embodiment has a diameter of about 0.1 to 10 μm, but is not limited to this size. However, it is preferable to reduce the size because the surface area can be increased with the same volume. Furthermore, the shape of the physical adsorbent 4 is not limited to the spherical shape as shown in the figure, and actually, the primary particles of the physical adsorbent 4 gather to form secondary particles or even tertiary particles. It is considered that the damaged particles are supported on the carrier 3. By providing irregularities on the surface of the deodorizing body, the surface area per unit volume can be increased, which is more effective.

  In the present embodiment, a honeycomb structure in which flat plates and corrugated plates made of organic fibers are alternately stacked on the deodorizing body 1 is used, but the mixture of the physical adsorbent 4 and the catalyst oxide 5 is formed in a lattice shape. An extruded honeycomb structure may be used. Thereby, since the whole honeycomb structure can be made into the physical adsorbent 4 and the catalyst oxide 5 without using a binder, the deodorizing body with a high adsorption effect and the conversion rate to carboxylic acid is realizable.

  The catalyst oxide 5 is preferably an oxide containing cobalt as a main component and Co3O4 having a spinel crystal structure. In addition, transition metals such as Mn, Fe, Ni, Cu, and Zn may be added to form a composite oxide having a spinel structure. This is because the spinel type oxide catalyst oxidizes aldehydes to form a rock salt type structure, and then the rock salt type structure is oxidized by oxygen in the air to return to the spinel type structure, and the catalytic action is exhibited by repetition of that, By selecting a spinel structure, it is possible to realize a deodorant having a high performance for converting aldehydes to carboxylic acids and a high conversion rate to carboxylic acids. The catalyst oxide 5 used in the present embodiment also has a diameter of about 0.1 to 10 μm, but is not limited to this size. However, it is preferable to reduce the size because the surface area can be increased with the same volume. Further, the shape of the catalyst oxide 5 is not limited to the spherical shape as shown in the figure, and the primary particles of the catalyst oxide 5 are actually gathered to form secondary particles or even tertiary particles. It is considered that the damaged particles are supported on the carrier 3. The catalyst oxide 5 is also supported on the support 3 or the physical adsorbent 4 by an action such as an anchor effect or a physical bond or a chemical bond.

  Next, the carrying method will be described. The method for supporting the physical adsorbent 4 and the catalyst oxide 5 on the carrier 3 includes a spraying method using a spray or the like, a dip method, and the like. When the carrier 3 is an inorganic fiber, the physical adsorbent 4 and the catalyst oxide are used. 5 and a dip method in which a binder is dispersed in water or a solvent as required, and the honeycomb structure is immersed in the slurry to carry the dip method. In the case where the carrier 3 is an organic fiber, paper can be made and supported by mixing the physical adsorbent 4 and the catalyst oxide 5 in addition to the organic fiber during the paper making process. In the case of the dip method, a powdery physical adsorbent 4 and the catalyst oxide 5 are dispersed to produce a slurry. The average diameter of the physical adsorbent 4 and the catalyst oxide 5 is preferably small, and the average diameter of the primary particles Is preferably about 1 μm or less. Furthermore, it is desirable to disperse in water or a solvent so that aggregation does not occur as much as possible, and a dispersant may be added as necessary.

Hereafter, the experiment example with respect to a deodorizing body is shown.
(Experiment 1)
Hydrophobic zeolite and tribasic cobalt tetraoxide Co3O4 (hereinafter referred to as cobalt catalyst A in the present embodiment) are dispersed in water, and a sodium-free colloidal silica (hereinafter referred to in the present embodiment) having a solid concentration of 20 wt% as a binder. Binder A) was added, and a slurry having a ratio of water, hydrophobic zeolite, cobalt catalyst A, and binder A of 8: 1: 1: 1 (hereinafter referred to as slurry A in the present embodiment) was produced.

  Further, hydrophobic zeolite and cobalt catalyst A are dispersed in water, sodium stable colloidal silica (hereinafter referred to as binder B in this embodiment) is added as a binder, and water, hydrophobic zeolite, cobalt catalyst A and binder B are added. And a ratio of 8: 1: 1: 1 (hereinafter referred to as slurry B in this embodiment).

  Further, cobalt catalyst A was dispersed in water, binder A was added, and a slurry having a ratio of water, cobalt catalyst A, and binder A of 4: 1: 1 (hereinafter referred to as slurry C in the present embodiment) was produced. .

Next, three honeycomb structures (120 × 36 × t10, 160 cells / inch ² ) made of cellulose fibers were prepared (hereinafter referred to as honeycomb A, honeycomb B, and honeycomb C in this embodiment). The honeycomb A was immersed in the slurry A, the honeycomb B was immersed in the slurry B, and the honeycomb C was immersed in the slurry C. The drying at 130 ° C. was repeated twice, and each was supported at 0.1 g / cc. The honeycomb B has a weight of 9.8 g and a calculated sodium content of about 1 wt%.

Further, a honeycomb structure made of cellulose fibers carrying 30 mg of platinum and a honeycomb structure carrying 0.05 g / cc of a composite oxide of 3: 1 manganese: cobalt (120 × 36 × t10, 160 cells / inch ² (Hereinafter referred to as honeycombs D and E in this example).

  Acetaldehyde was continuously aerated at a space velocity (hereinafter referred to as SV) of 1200 and a concentration of 100 ppm to each of the three types of prepared honeycomb samples and the prepared two types of honeycomb samples, and the concentration of acetaldehyde on the inlet side and the outlet side was measured with a gas chromatograph (detector FID). It was measured by. Further, the acetic acid concentration on the outlet side was measured with a detector tube. The results are shown in (Table 1). The experiment using the honeycomb A was Example 1, the experiment using the honeycomb B was Example 2, the experiment using the honeycomb C was Example 3, the experiment using the honeycomb D was Comparative Example 1, and the honeycomb E was used. This experiment was Comparative Example 2.

From Table 1, the cobalt catalyst A functions as a catalyst for converting acetaldehyde into acetic acid, and has higher activity than platinum. In addition, acetic acid changed from acetaldehyde can be adsorbed and held on the zeolite. In addition, Example 2 containing sodium once lost activity and was back. This is thought to be because sodium is in an ionic state and inhibits the transfer of electrons between cobalt catalyst A, oxygen, and acetaldehyde. The formation of a compound such as sodium acetate reduces the number of cations, and the effects of electron transfer Can be eliminated.
(Experiment 2)
Hydrophobic zeolite and cobalt catalyst A are dispersed in water, binder A is added, and a slurry in which the ratio of water, hydrophobic zeolite, cobalt catalyst A, and binder A is 8: 1: 1: 1 (hereinafter, this embodiment) Then, the slurry D), the activated carbon and the cobalt catalyst A are dispersed in water, the binder A is added, and a slurry having a ratio of water, activated carbon, cobalt catalyst A, and binder A of 8: 1: 1: 1 (hereinafter, In this embodiment, the slurry E is prepared.

Next, two honeycomb structures (120 × 36 × t10, 160 cells / inch ² ) made of cellulose fibers were prepared (hereinafter referred to as honeycomb D and honeycomb E, respectively in the present embodiment). The honeycomb D was immersed in the slurry D and the honeycomb E was immersed in the slurry E, respectively, and drying at 130 ° C. was repeated twice, and each was supported at 0.1 g / cc.

  A fan was attached to the two types of honeycomb samples produced, and each sample was placed in a 40 L container adjusted to a 10% acetaldehyde concentration. The temperature in the container was about 20 ° C. The fan was adjusted to pass through the sample at a flow rate of 270 L / min, and the acetic acid concentration 60 minutes after the start of the experiment was measured with a detector tube.

  After the experiment, each sample was taken out of the container, the fan was operated in a place where there was no odor, and aeration was performed at about 20 ° C. for 40 minutes. Thereafter, the above experiment was performed. These series of experiments and aeration were repeated 10 times. (Table 2) shows the experimental results. The experiment using the honeycomb D is Example 4, and the experiment using the honeycomb E is Comparative Example 3. “ND” indicates a detection limit (0.05 ppm) or less.

  From Table 2, the tenth acetic acid concentration in Example 4 is as small as 0.1 ppm, and Comparative Example 3 is as large as 1.0 ppm. This indicates that the zeolite has a higher regeneration rate due to the desorption of acetic acid by aeration than the activated carbon.

  From these, it is possible to realize a deodorant that can be adsorbed and removed by converting acetaldehyde to acetic acid at room temperature with a cobalt oxide catalyst and zeolite, and it is possible to regenerate the adsorbent with physical adsorption action by desorption by aeration, so maintenance is free The deodorizing body which can be used for a long time can be provided.

(Embodiment 2)
FIG. 2 is a schematic view of a deodorizing body in the second embodiment of the present invention. A deodorizing device 11 is installed in the room or the vehicle 10. The deodorizing device 11 includes an intake means 13, an intake port 14, a filter 15 for deodorization, an introduction port 17 for returning the deodorized air to the room, and an exhaust port 19 for exhausting air 20 containing odor from the room or the interior of the vehicle. Become. Further, a switching valve 18 for switching between these is provided between the introduction port 17 and the exhaust port 19. In addition, the deodorizing apparatus of this invention can also be attached to an air conditioner, a ventilation fan, etc., or can also be incorporated and used.

  As the intake means 13, a sirocco fan, a turbo fan, a propeller fan, a cross flow fan, a cross-flow fan or the like is used as a general intake means, and is not particularly limited. In this embodiment, a propeller fan is used. The intake means 13 can also be used as a blowing means for the filter 15.

Next, an operation method will be described. When odor is generated in the room or the car 10, the deodorizing device 11 sucks the odorous air 12 through the intake port 14 by the intake means 13, passes through the filter 15 and is deodorized, and the deodorized air 16 passes through the inlet port 17. Returned to the room 10. When the filter 15 reaches saturation adsorption and there is no odor in the room or the car 10, the switching valve 18 switches the ventilation direction to the exhaust port 19 side that discharges to the outside, and the intake means 13 is operated to ventilate the odor. Odor is desorbed from the adsorbent having a physical adsorption action that is saturated and adsorbed, and the air 20 containing the desorbed odor can be discharged to the outside or outside the vehicle.
Therefore, by repeating this operation, a deodorizing apparatus that can be used for a long time without maintenance can be realized.

(Embodiment 3)
FIG. 3 is a configuration diagram of the refrigeration cycle of the air conditioner according to the tenth and eleventh embodiments of the present invention, FIG. 4 is a schematic sectional view showing the configuration of the indoor unit of the air conditioner, and FIG. It is a block diagram which shows the control content of a harmony machine.

  In FIG. 3, 301 is a compressor, 302 is a four-way valve, 303 is an outdoor heat exchanger, 304 is a pressure reducer, 305 is an indoor heat exchanger, and is connected by a refrigerant pipe through which refrigerant is passed in order, and a heat pump type refrigeration cycle Is forming. Reference numeral 306 denotes an indoor fan serving as a blowing means for ventilating the indoor heat exchanger 305, reference numeral 307 denotes a pipe temperature sensor for detecting the temperature of a pipe (not shown) constituting the indoor heat exchanger 305, and reference numeral 308 denotes an outdoor heat exchanger. This is an outdoor fan that ventilates 303. Reference numeral 309 denotes an exhaust fan for discharging the air in the ventilation path of the indoor unit 313 to the outside through a duct (not shown) that connects the room and the outside. The compressor 301, the four-way valve 302, the outdoor heat exchanger 303, and the outdoor fan 308 are built in the outdoor unit (not shown) of the air conditioner in the present embodiment.

  As shown in FIG. 4, the indoor unit 313 includes an indoor heat exchanger 305, an indoor fan 306, an exhaust fan 309, a casing 310 that forms a ventilation path, and air that has been heat-exchanged by the indoor heat exchanger 305. It is composed of a wind direction deflecting blade 311 that is provided in the blowing unit 314 and changes the direction of the blown wind, and a deodorizing body filter 312 that removes the odor of the air passing through the ventilation path. Reference numeral 315 denotes a remote controller for remotely controlling the operation of the air conditioner. The user can perform various operations on the remote controller 315.

  Next, the air conditioning operation of the air conditioner configured as described above will be described.

During the heating operation, the refrigerant sucked and compressed by the compressor 301 is sent to the indoor heat exchanger 305 through the four-way valve 302, where it is condensed and liquefied. The refrigerant exiting the indoor heat exchanger 305 is depressurized by the decompressor 304 and guided to the outdoor heat exchanger 303, where the refrigerant evaporates and takes the latent heat of evaporation from the outdoor air (outside air) and vaporizes it. The refrigerant that has passed through the outdoor heat exchanger 303 is again sucked into the compressor 301 through the four-way valve 302.

  The embodiment of the air conditioner configured as described above will be described in detail below.

  FIG. 4A is a schematic cross-sectional view of the air conditioner indoor unit 313 performing air conditioning operation.

  When the user operates the remote controller 315 to instruct the air conditioning operation of the air conditioner, the control unit built in the indoor unit 313 shown in 320 of FIG. 5 receives the command, and the pipe temperature sensor 307 controls the indoor heat exchanger 305. While detecting the temperature, a control signal is sent to the compressor 301, the four-way valve 302, the indoor fan 306, the wind direction deflecting blade 311 and the like as necessary to start the air conditioning operation.

  At this time, when various odors exist in the room where the indoor unit 313 is installed, the odor components in the room can be adsorbed and removed by the filter 312 disposed in the ventilation path from the suction portion to the blowout portion 314. it can.

  In the air conditioner, since the interior of the indoor unit becomes a humid environment during the cooling operation, the adsorbent constituting the filter 312 is most preferably a hydrophobic zeolite, but the type of the adsorbent is not limited thereto.

  Next, the cleaning operation function provided in the air conditioner of the present embodiment will be described in detail.

  In FIG. 5, the control device 320 built in the indoor unit 313 performs a heating operation for heating the indoor heat exchanger 305, so that the odor attached to the indoor heat exchanger 305 is removed or the inside of the indoor unit 313 is installed. A cleaning operation instructing unit 321 is provided for performing a cleaning operation for suppressing the growth of molds by drying or heat shock. A control signal is sent from the control device 320 to the compressor 301, the indoor fan 306, the exhaust fan 309, and the wind direction deflecting blade 311 as necessary.

  When a stop command is issued from the remote controller 315 during the operation of the air conditioner, a predetermined temperature T [° C.] (for example, 40 ° C.) is received by the cleaning operation instruction means 321 in response to the command and the indoor heat exchanger in the cleaning operation. The compressor 301 and the indoor fan 306 are controlled by the cleaning operation instruction means 321 while detecting the temperature of the indoor heat exchanger 305 by the pipe temperature sensor 307 by the cleaning operation instruction means 321, and the temperature of the indoor heat exchanger 305 is set. The temperature is adjusted to the target temperature T [° C.], and the cleaning operation is performed for a predetermined time M [minutes] (for example, 60 minutes).

At the same time, as shown in FIG. 4B, the position of the wind direction deflecting blade 311 is controlled by the odor removal operation instruction means 321 to a position where the air blown out from the blowing portion 314 is short-circuited. The air heated by the indoor heat exchanger 305 circulates in the ventilation path of the machine 313 and high-temperature air is ventilated through the filter 312, so that the odor is desorbed from the adsorbent having a physical adsorption action that constitutes the filter 312 and is saturated. Can be made.

  Therefore, a deodorizing function that can be used for a long time without maintenance in the air conditioner can be realized by performing the heating operation as the cleaning operation at the end of the operation.

  In this embodiment, an air conditioner operation stop command issued from the remote controller 315 is received to automatically perform a heating operation as a cleaning operation. However, the user manually starts the cleaning operation. Needless to say, the same effect can be expected even if the timing for performing the cleaning operation is arbitrarily determined, such as a mode for instructing or a mode for automatically performing the cleaning operation before the start of the air conditioning operation.

  As a result of the cleaning operation, the amount of odorous components generated from the filter 312 gradually increases. At this time, the odor removal operation instruction means 321 issues an operation command to the exhaust fan 309, and the air in the ventilation path of the indoor unit 313 is removed. When the air is exhausted to the outside through the duct, the air blown out from the blowing portion 314 is short-circuited by the wind direction deflecting blade 311 and the odor component is released to the outside by the operation of the exhaust fan 309. Since indoor release of odor components can be reduced, a deodorizing function that can be used for a long period of time without maintenance can be added to the air conditioner without impairing the comfort of the indoor environment.

  As described above, the deodorizing body and the deodorizing apparatus using the deodorizing body according to the present invention can adsorb and remove the odor generated in the living space as described above, and convert particularly harmful acetaldehyde into acetic acid that is less harmful at room temperature. It is possible to provide a deodorizing body that can be converted and adsorbed and removed, and to provide a deodorizing apparatus that can automatically control adsorption and desorption without bothering humans and can be used for a long time without maintenance.

  Furthermore, the deodorizing body can be added to a maintenance-free long-term deodorizing function and a toxic substance decomposing function by installing it in an air conditioner, garbage disposal machine, VOC decomposer, nursing care deodorizer, etc. It is. The deodorizing device can be linked to an air conditioner, a ventilation fan, a car air conditioner, etc. installed in the room.

(A) Schematic external view showing the deodorizing body in the first embodiment of the present invention (b) Enlarged schematic view of the surface of the deodorizing body in the first embodiment of the present invention The schematic diagram which shows the deodorizing apparatus in the 2nd Embodiment of this invention. The refrigeration cycle block diagram of the air conditioner in the 3rd Embodiment of this invention Schematic sectional drawing which shows the structure of the indoor unit of the air conditioner in the 3rd Embodiment of this invention The block diagram which shows the control content of the air conditioner in the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Deodorizing body 2 Air flow direction 3 Support | carrier 4 Adsorbent which has a physical adsorption action 5 Oxide which has a catalytic action 10 Room or vehicle 11 Deodorizing device 12 Air containing odor 13 Intake means 14 Inlet 15 Filter 16 Deodorized air 17 Introduction Port 18 Switching valve 19 Exhaust port 20 Odor containing air 301 Compressor 302 Four-way valve 303 Outdoor heat exchanger 304 Decompressor 305 Indoor heat exchanger 306 Indoor fan 307 Piping temperature sensor 308 Outdoor fan 309 Exhaust fan 310 Casing 311 Wind direction deflecting blade 312 Filter 313 Indoor unit 314 Air outlet 315 Remote control

Claims (11)

It is composed of an adsorbent having a physical adsorption action, an oxide containing cobalt and having a catalytic action, and a carrier supporting the adsorbent and the oxide, and the oxide converts an aldehyde into a carboxylic acid, A deodorizing body characterized by being adsorbed and removed by the adsorbent. The deodorizing body according to claim 1, wherein the adsorbent is a hydrophobic zeolite. The deodorizing body according to claim 1, wherein the carrier is a honeycomb structure composed of organic fibers. The deodorizing body according to claim 1 or 2, wherein an oxide is supported on at least the adsorbent surface. The deodorizing body according to claim 1 or 2, wherein the carboxylic acid adsorbed on the adsorbent is desorbed by aeration and can be used repeatedly. The deodorizer according to claim 1 or 4, wherein the oxide has a spinel structure. The deodorizing body according to any one of claims 1, 4, and 6, wherein a sodium and potassium component in the oxide is less than 1 wt%. The deodorizer according to claim 1, wherein the aldehyde is acetaldehyde and the carboxylic acid is acetic acid. An air inlet for introducing air containing at least odor, an air intake means for taking in air containing the odor, a filter for deodorizing odor contained in air sucked by the air intake means, and air deodorized by the filter Or the deodorizing apparatus which is provided with the introduction port introduce | transduced into a vehicle, and the exhaust port which exhausts the odor remove | desorbed from the said filter to the exterior or the exterior of a vehicle, and the said filter is a deodorizing body of any one of Claims 1-8. In the ventilation path from the suction part to the blowing part, an indoor heat exchanger and an indoor fan for sending out the air whose temperature is adjusted by the indoor heat exchanger to the room, and a filter for deodorizing the odor contained in the sucked air, The filter is provided with a cleaning operation function in which an indoor heat exchanger is heated while air conditioning operation of the air conditioner is stopped, and at least a part of the air heated by the indoor heat exchanger circulates in the indoor unit. The air conditioner characterized by being a deodorizing body of any one of -8. The air conditioner according to claim 10, further comprising an exhaust function for exhausting air in the indoor unit ventilation path to the outside and operating the exhaust unit during or after the cleaning operation.

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