JP2001231800A - Deodorizing method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing method and device capable of removing the intensive malodors generated during the incontinence of a bed ridden person to be nursed. SOLUTION: The odor removing device 1 is installed near the person 18 to be nursed and is covered together with the person 16 to be nursed by bedding 5 and 5' to remove the odors during the incontinence in the bedding 5 and 5'. Photocatalyst filters 7 and 7' activated by a UV lamp 8 and the ozone generated by the irradiation with the UV lamp 8 are used in combination as the odor removing means of the odor removing device 1, by which the removal of the storing malodors, such as feces odors and urine odors, is made possible. The ozone used for the odor removal is cracked by an ozone cracking filter 9 and is made non-polluting, by which the installation and use of the device 1 near the person 16 to be nursed is made possible. Further, the carriers of the photocatalysts formed by sticking ceramics 7b for the surface layers to the front surfaces of porous bodies 7a having a three-dimensional network structure to increase the contact areas with air are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an odor removing method and an odor removing device, and more particularly to an odor removing method and apparatus effective for removing a bad odor generated when a bedridden caregiver incontinences.

[0002]

2. Description of the Related Art A bedridden caregiver has a bad smell during incontinence.
The caregiver who noticed this removes the room by ventilating the room, previously installing activated carbon, zeolite, or the like in the room to adsorb and remove the odor, or decomposing and removing it using ozone or a photocatalyst.

[0003]

However, methyl mercaptan, which is one of the main components of fecal odor, and ammonia, which is one of the main components of urinary odor, emit an intense odor even in a very small amount. Immediately after incontinence, the odor spreads throughout the room, and even if ventilation is used, activated carbon, ozone, air fresheners, etc., the odor drifts in the room for a while, and the caregiver is exposed to this odor. Will be. In view of the above, an object of the present invention is to provide an odor removing method and apparatus which can remove an intense odor at the time of incontinence.

[0004]

According to the first aspect of the present invention, a case having a suction port and an exhaust port is provided with a fan and an odor removing means, and the fan sucks air from the suction port into the case to remove the odor. An odor removing device that removes the odor by the removing means and discharges the case out of the case through the exhaust port is installed beside the cared person and covered with a nightclothes together with the cared person to remove the odor generated when the cared person is incontinent. It is characterized by the following. Claim 2
The invention described in (1) incorporates a fan and an odor removing means in a case having an intake port and an exhaust port, sucks air into the case from the intake port with the fan, removes odor with the odor removing means, and removes the case from the exhaust port. An odor removing device that is discharged to the outside, wherein a photocatalytic filter, an ozone generating ultraviolet lamp, and an ozone decomposing device are disposed in an air flow path formed between an intake port and an exhaust port by a fan as odor removing means. Features. The invention according to claim 3 is the odor removal device according to claim 2, wherein the photocatalyst filter includes:
The average particle size is 1 μm on the surface of the porous ceramic body having a three-dimensional network structure in which the diameter of the skeletal muscle is 100 μm to 1000 μm.
A ceramic layer for surface layer of m to 100 μm is attached to form an uneven surface, and a photocatalyst is carried on the uneven surface. According to a fourth aspect of the present invention, in the odor removing device according to the second aspect, a sensor for detecting incontinence is provided,
The driving of the fan and the lighting of the ultraviolet lamp are started by an output signal of the sensor.

[0005]

According to the first aspect of the present invention,
Since the odor removing device is installed beside the cared person and covered with the nightclothes together with the cared person, the odor at the time of incontinence can be removed in the nightclothes, and the odor can be prevented from diffusing indoors. In addition, since odors are removed in narrow nightclothes as compared with a case where odors diffused in a large room are removed, fecal odors and urine odors can be removed using a small, low-noise, low-power device as an odor removal device. . According to the second aspect of the present invention, since a photocatalyst and ozone are used in combination as the odor removing means, it is possible to quickly remove strong odors such as fecal odor and urine odor. In addition, since the ozone used for removing the odor is decomposed and made harmless, it can be used beside the care receiver. According to the third aspect of the present invention, since the porous body having a three-dimensional network structure is used as the photocatalyst carrier, the photocatalyst is easily irradiated with ultraviolet rays, and the photocatalyst is easily activated. In addition, the surface ceramic is adhered to the surface of the porous body to form an uneven surface layer, and the contact area with air is increased, so that the odor removing ability is drastically improved, and the apparatus can be downsized. Further, since the photocatalyst is supported on the uneven surface layer, there is an advantage that the photocatalyst is hardly peeled off due to a large supporting force due to an anchor effect. Preferably, the photocatalyst is titanium oxide. This makes it possible to obtain a photocatalytic filter having a high catalytic function and a further excellent purification efficiency. However, the skeletal muscle has insufficient strength at less than 100 μm,
If it exceeds 3, sufficient ultraviolet rays do not reach the inside of the network structure, and the activation of the photocatalyst becomes insufficient. If the particle size of the ceramic particles for the surface layer is less than 1 μm, the uneven surface layer is not sufficiently formed, and if it exceeds 100 μm, there is a possibility that the particles may be separated from the surface of the porous ceramic body. According to the fourth aspect of the present invention, since the sensor detects incontinence and starts the operation of the deodorizing device, the deodorizing can be performed even when the caregiver is not present, thereby reducing the burden on the caregiver.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows an odor removing method according to an embodiment of the present invention and an odor removing device 1 used in the odor removing method. I have. FIG. 2 shows a functional configuration of the odor removing device 1. The odor removing device 1 has a housing in which an exhaust port 2 and an intake port 3 are formed. A fan 10 incorporated in the housing sucks air from the intake port 3 into the housing and discharges the air from the exhaust port 2 to the outside of the housing. be able to. In addition, a dust collecting filter 6, a first photocatalyst filter 7, an ultraviolet lamp 8, and a second photocatalyst filter 7 'are sequentially arranged from an intake port 3 side in an air flow passage formed between an intake port and an exhaust port by a fan 10. And an ozone decomposition catalyst filter 9 using manganese dioxide as a catalyst.

FIG. 3 schematically shows the structure of the photocatalyst filters 7, 7 '. The photocatalyst filters 7, 7 'have a structure in which surface ceramic particles 7b are adhered to the surface of a ceramic porous body 7a having a three-dimensional network structure to form an uneven surface, and titanium oxide is supported on the uneven surface as a photocatalyst. ing. The ceramic porous body 7a has a skeletal muscle diameter of 100 μm.
The one molded to a size of m to 1000 μm is used. The reason for limiting the size of the skeletal muscle to such a range is that when the skeletal muscle is less than 100 μm, the strength is insufficient, and
This is because, when the value exceeds 3, sufficient ultraviolet rays do not reach the inside of the network structure, and the activation of the photocatalyst becomes insufficient. Also,
The surface layer ceramic particles 7b have an average particle diameter of 1 μm to 100 μm.
μm is used. The reason for limiting the size of the surface-layer ceramic particles to such a range is that if the particle size of the surface-layer ceramic particles 7b is less than 1 μm, the uneven surface layer is not sufficiently formed, and if the particle size exceeds 100 μm, the surface ceramic porous body has a small size. This is because there is a risk of separation.

[0008] The photocatalytic filter 7, 7 'having such a structure.
Impregnated and adhered a ceramic containing fine ceramic powder and a binder to an organic porous material having a three-dimensional network structure, and adhered ceramic particles for the surface layer to the ceramic while the ceramic was not dried, and dried. Thereafter, these are heated to burn off the organic porous material, and the ceramic fine powder and the ceramic particles for the surface layer are sintered to form a ceramic porous body having a three-dimensional network structure having an uneven surface layer composed of the ceramic particles for the surface layer. And then supporting a photocatalyst on the uneven surface layer of the porous ceramic body.

The ultraviolet lamp 8 comprises a photocatalytic filter 7,
It is provided to activate the photocatalyst 7 'and activate oxygen in the air to generate ozone. Ultraviolet rays having a wavelength of 400 nm or less are required for activation of the photocatalyst, and ultraviolet rays having a wavelength of 220 nm or less are required for ozone generation. Therefore, the ultraviolet lamp 8 has a light wavelength of 220 n.
A device capable of generating mixed ultraviolet light including ultraviolet light of m or less is used for activating the photocatalyst and generating ozone.

The odor removing device 1 includes a lamp lighting circuit 11 for operating an ultraviolet lamp 8, a sensor 4 for detecting incontinence, a weak operation button 12, a strong operation button 13, a stop button 14, a timer 15, these sensors 4, various A control circuit 16 for controlling lighting of the ultraviolet lamp 8 and driving control of the fan 10 based on signals from the buttons 12 to 14 and the timer 15 and a power supply circuit 17 are provided.

The sensor 4 senses incontinence by detecting moisture, ammonia or the like of the cared person 18 at the time of incontinence, and outputs a signal. The weak operation button 12 is for driving the fan 10 at low speed rotation.
, The ultraviolet lamp 8 is turned on and the fan 10 rotates at a low speed. The strong operation button 13 is the fan 10
To drive the motor at high speed.
By the operation of 3, the ultraviolet lamp 8 is turned on, and the fan 10 rotates at high speed. The stop button 14 is for stopping the driving of the fan 10, and the operation of the button 14 turns off the ultraviolet lamp 8 and stops the fan 10. The timer 15 is used to set the operation time of the fan 10. The fan 10 started to be driven by the operation of the weak operation button 12 or the strong operation button 13 is operated for the time set by the timer 15 and then automatically stopped. Can be done.

The structure of the odor removing device 1 according to the present embodiment is as described above. Next, a method of using the device will be described with reference to FIG. The odor removing device 1 is installed beside the cared person 18, the sensor 4 is attached to the cared person 18, and the cared person 18 and the odor removing device 1 are covered with bedclothes 5, 5 ′, such as sheets, blankets, and futons.

The incontinence of the cared person 18 is detected by the sensor 4, and when the signal of the sensor 4 is output to the control circuit 16, the ultraviolet lamp 8 is turned on in response thereto and the fan 1
0 starts low speed rotation. The air in the nightclothes 4 is sucked into the housing of the odor removing device 1 from the intake port 3 by the low-speed rotation of the fan 10, flows through the air flow passage, and is exhausted from the exhaust port 2 to the outside of the housing. The air sucked into the housing passes through the first photocatalyst filter 7 and the second photocatalyst filter 7 ′ after dust is removed by the dust collection filter 6. At this time, the odor-causing substance in the air is decomposed and removed by contact with a photocatalyst activated by ultraviolet rays having a wavelength of 400 nm or less emitted from the ultraviolet lamp 8.

Since both photocatalyst filters 7, 7 'are made of a three-dimensional network porous ceramic body, turbulence occurs when air passes through both photocatalyst filters 7, 7'. On the other hand, when the ultraviolet lamp 8 is turned on, ultraviolet light having a wavelength of 220 nm or less is generated, whereby oxygen in the air is activated and ozone is generated. Then, the generated ozone and the odor-causing substance in the air are mixed by turbulence, and the odor-causing substance is decomposed and removed by the ozone.

After passing through the second photocatalyst filter 7 ', the air passes through the ozone decomposition catalyst filter 9. At this time, the ozone in the air is decomposed and removed, and the air containing almost no ozone is discharged from the exhaust port 2 to the outside of the housing. Leaked to

As described above, according to the odor removing method according to the present embodiment, the odor removing device 1 is installed beside the care receiver 18 and is covered with the care receiver 18 by the nightclothes 5, 5 '. The odor at the time of incontinence can be removed in the nightclothes 5, 5 ', and the odor can be prevented from diffusing indoors. Further, since the odor is removed in the narrow nightclothes 5 and 5 as compared with the case where the odor diffused in a large room is removed, the odor removal device 1 is used as a small, low-noise, low-power consumption device to reduce fecal odor and urine. Odor can be removed. Further, according to the odor removing device 1 according to the present embodiment, the photocatalyst filters 7, 7 'activated by the ultraviolet lamp 8 and the ozone generated by the irradiation of the ultraviolet lamp 8 are used in combination as the odor removing means. Strong malodors such as urine odor can be quickly removed. In addition, the ozone used for removing the odor is decomposed by the ozone decomposition filter 9 to make it harmless, so that it can be installed and used beside the cared person 18. Also,
Since the porous body 7a having a three-dimensional network structure is used as the carrier for the photocatalyst, the photocatalyst is easily irradiated with ultraviolet rays and the photocatalyst is easily activated. In addition, the surface ceramic 7b is attached to the surface of the porous body to increase the contact area with the air, so that the odor removing capability is drastically improved, and the apparatus 1 can be downsized. Furthermore, since the sensor detects incontinence and starts operation of the deodorizing device, the deodorizing can be performed even when the caregiver is not present, thereby reducing the burden on the caregiver.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an odor removing method according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a functional configuration of an odor removing device used in the odor removing method.

FIG. 3 is a schematic diagram showing a structure of a photocatalytic filter of the odor removing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Odor removal device, 2 ... Exhaust port, 3 ... Inlet port, 4 ... Sensor, 5, 5 '... Nightwear, 7, 7' ... Photocatalytic filter,
8 ... Ultraviolet lamp, 10 ... Fan, 18 ... Cared person.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24F 7/00 A61L 9/015 // A61L 9/00 9/20 9/015 A61G 9/00 K 9 / 20 B01D 53/36 HJ (72) Inventor Hirokazu Watanabe 3-36 Noritake Shinmachi, Nishi-ku, Nagoya-shi, Aichi Prefecture Inside Noritake Company Limited (72) Inventor Shinji Kato 3-chome Noritake Shinmachi, Nishi-ku, Nagoya-shi, Aichi Prefecture No. 1-36 Noritake Company Limited Limited F-term (reference) 4C080 AA07 AA10 BB02 CC13 HH05 JJ03 KK08 MM02 MM08 QQ11 QQ17 QQ20 4C098 AA09 CC01 CD05 CD07 CD10 CE01 CE11 DD13 DD16 4C341 JJ03 BA12A14A12A14A12XA4A CA02 CC40 CC41 CD05 DA01 DA02 DA08 DA20 EA01

Claims (4)

[Claims] 1. A case having an intake port and an exhaust port, a fan and an odor removing means are built in, a fan sucks air from the intake port into the case, removes odor by the odor removing means, and supplies the air to the outside of the case through the exhaust port. A odor removing method, comprising: installing an odor removing device that is discharged to a care recipient besides a care recipient and covering the odor with the care recipient with a nightclothes to remove the odor generated when the care recipient is incontinent. 2. A case having a suction port and an exhaust port is provided with a fan and an odor removing means. The fan sucks air from the intake port into the case, removes the odor with the odor removing means, and removes the odor from the case to the outside of the case. An odor removal device that discharges to the
An odor removing device comprising a photocatalyst filter, an ozone generating ultraviolet lamp, and an ozone decomposing means disposed in an air flow passage formed between an intake port and an exhaust port by a fan as odor removing means. 3. The photocatalyst filter according to claim 1, wherein said photocatalytic filter has an average particle diameter of 1 μm to 100 μm on the surface of a porous ceramic body having a three-dimensional network structure in which the diameter of skeletal muscle is 100 μm to 1000 μm.
m surface ceramic particles are attached to form an uneven surface,
3. The odor removing device according to claim 2, wherein a photocatalyst is carried on the uneven surface. 4. The odor removing device according to claim 2, wherein a sensor for detecting incontinence is provided, and the driving of the fan and the lighting of the ultraviolet lamp are started by an output signal of the sensor.