JPH04352966A - Deodorizing device - Google Patents

Abstract

PURPOSE:To provide a deodorizing device whereby deodorization can be performed over a long period without providing largeness in size of a catalytic amount even in the case of deodorization with a large amount of air by controlling a blower, relating to the deodorizing device for purifying a bad smell component by utilizing ozone. CONSTITUTION:A device is constituted of an ozone generator 15 arranged in an exhaust circuit 13 having a blower 14, deodorizing catalyst 16, high mode control circuit 17 for operating the blower 14 at a large amount of air and a low mode control circuit 18 operating by a small amount of air at predetermined time and also driving the ozone generator 15. When the ozone generator 15 is actuated, an amount of air of the blower 14 is automatically reduced, and a space speed is reduced to prevent ozone from leaking to the outside.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides hydrogen sulfide, ammonia,
This invention relates to a deodorizing device that purifies malodorous components such as various mercaptans and amines.

0002

2. Description of the Related Art In recent years, household deodorizing devices have been introduced reflecting the trend towards cleanliness.

Conventionally, this type of deodorizing apparatus has had a configuration as shown in FIG. That is, in FIG. 3, 1 is the suction port 2,
A case having an exhaust port 3, 4 a blower for inhaling air containing malodorous components, 5 an ozone generating electrode for converting oxygen in the air into ozone by silent discharge, and 6 a blower for inhaling air containing malodorous components; A deodorizing catalyst that decomposes and oxidizes malodorous components, 7 is a control circuit for controlling the ozone generating electrode 5 and the blower 4, and 8 is a dry cell as a power source.

[0004] In the above configuration, a switch (not shown)
When the air blower 4 is turned on, the blower 4 rotates and ozone is generated from the ozone generating electrode 5. Air containing malodorous components is sucked in from the inlet 2 and passes through the ozone decomposition catalyst 6 while coming into contact with the ozone. Here, the malodorous components are oxidized and decomposed by the ozone decomposition catalyst 6 activated by ozone, and the excess ozone is also decomposed into oxygen (2O3 → 3O2), which is discharged from the discharge port 3 to the outside of the case 1.

[0005]

[Problem to be solved by the invention] In a deodorizing device that uses ozone, the deodorizing ability, that is, the ability to oxidize malodorous components, generally improves as the ozone concentration increases, but since ozone is harmful to the human body, It is necessary to maintain the ozone flowing out to the outside at a low concentration (0.1 PPM or less), and in order to use it for a long period of time, it is necessary to take safety into account and make the volume of the ozone decomposition catalyst 6 sufficiently large. Therefore, there was a problem that this led to an increase in the size of the deodorizing device. Particularly when deodorizing with a large air volume, in order to prevent ozone from leaking to the outside, it is necessary to suppress the space velocity below a predetermined value, which leads to an increase in the size and cost of the deodorizing device as the amount of catalyst increases.

[0006] The present invention solves the above problems,
The object of the present invention is to provide a deodorizing device that can perform deodorization over a long period of time without increasing the amount of catalyst even when deodorizing with a large air volume by controlling an air blower.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the deodorizing device of the present invention includes an exhaust passage having an inlet and an outlet, a blower for sucking malodorous components, and a blower disposed in the exhaust passage. a deodorizing catalyst provided on the downstream side of the ozone generator; a high mode control circuit that operates the blower at a large air volume; It is composed of a low mode control circuit that drives an ozone generator to supply ozone to the deodorizing catalyst.

[0008]

According to the present invention, when a person uses the equipment to which the deodorizing device is attached, the high mode control circuit operates, the blower is operated at a large air volume, and the ozone generator is not operated. Deodorization at this time is mainly performed by physical adsorption to the deodorization catalyst. Then, during a predetermined period when the equipment is not in use, the low mode control circuit is automatically activated to operate the blower at a small air volume and drive the ozone generator, promoting the decomposition of malodorous components adsorbed on the catalyst surface. Ru. At this time, since the air volume is small, the space velocity of the deodorizing catalyst is reduced, and external leakage of ozone can be maintained at a safe level.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of a deodorizing device showing one embodiment of the toilet seat device of the present invention. In the figure, 9 is a toilet bowl, 1
0 is a deodorizing device, and inside an exhaust passage 13 having an inlet 11 and an outlet 12, a blower 14 and an ozone generator 15 driven by a fan motor are provided. On the downstream side of the ozone generator 15, there is a deodorizing catalyst 1 that adsorbs or decomposes malodorous components and also decomposes excess ozone.
6 is provided and is formed into a honeycomb shape to reduce pressure loss. 17 is a high mode control circuit that operates the blower 14 with a large air volume, and 18 is a low mode control circuit that operates the blower 14 with a small air volume and drives the ozone generator 15 to supply ozone to the deodorizing catalyst 16. It consists of a clock circuit 19, a setting circuit 20 for setting the operating time in the low mode, and a comparator 22 for comparing and calculating the signals of the clock circuit 19 and the setting circuit 20 to operate the blower 14 and the ozone generator 15. 22 is a power source, and 23 is a drive switch for the toilet seat device which is the main body of the device.

The operation of the above configuration will now be described. When a person sits on the toilet bowl 9 during defecation, the drive switch (seating switch) 23 is closed, the high mode control circuit 17 is activated, the blower 14 is operated in the high mode (large air volume), and the suction port 11 is operated.
A large flow of air is generated from the outlet 12 to the exhaust port 12,
Malodorous components during defecation are sucked through the suction port 11 and physically adsorbed onto the solid surface of the deodorizing catalyst 16, resulting in rapid deodorization. The purified air is discharged into the toilet through the outlet 12. Note that the air volume at this time needs to be 0.1 m3/min or more; anything less than this is considered insufficient. At this time again,
The ozone generator 15 does not operate, and deodorization is mainly done by the deodorization catalyst 16.
This is done by physical adsorption to.

On the other hand, the clock circuit 1 of the low mode control circuit 18
Reference numeral 9 measures time, and the time signal stored in advance in the setting circuit 20 and the output signal of the clock circuit 19 are sent to a comparator 2.
1, and when the signals match, the blower 14 is operated in a low mode (small air volume) and the ozone generator 15 is driven, and a portion of the air sucked from the intake port 11 generates ozone. The silent discharge of the container 15 changes the ozone into ozone. The generated ozone activates the deodorizing catalyst 16, reacts with malodorous components adsorbed on the solid surface of the deodorizing catalyst 16, and returns to oxygen. Furthermore, the activated deodorizing catalyst 16 also reacts with the malodorous components and returns to its original state. The purified air is discharged from the outlet 12 to the outside space. The time set by the setting circuit 20 and the length of driving time are set depending on the equipment to which the deodorizing device is installed and the purpose. The toilet seat device in this example is set for the time period from late night to early morning, when the frequency of urination is least, and the driving time is 1.
The duration is 0 to 20 minutes.

Next, the operation of this embodiment will be explained. As mentioned above, high concentrations of ozone are harmful to the human body, so the concentration emitted to the outside must be kept at 0.1 PPM or less. In the case of a toilet seat device like this embodiment, the air volume for deodorization is 0.1 m3/min, which is a relatively large air volume. There is a limit to the space velocity (catalyst passing flow rate/catalyst volume) of the deodorizing catalyst 16 for decomposing excess ozone over a long period of time without leaking to the outside, and it is necessary to set it to a predetermined value or less. Therefore, conventionally, when deodorizing with a large air volume, the deodorizing catalyst needs to have a sufficient volume, which results in an increase in the size and cost of the deodorizing device. According to this embodiment, during times when people use the toilet seat device, ozone is deodorized by physical adsorption to the deodorizing catalyst 16 without generating ozone, and when the toilet seat device is not in use, the low mode control circuit 18 is automatically activated. The air volume is reduced to the optimum state, the space velocity is sufficiently reduced, and ozone is supplied to decompose the malodorous components adsorbed on the solid surface of the deodorizing catalyst 16 without leaking to the outside, and the catalyst is regenerated. . Therefore, even in equipment that requires a large air volume, deodorization can be carried out over a long period of time without increasing the amount of catalyst, and safety is improved. Further, in this embodiment, the low mode control circuit 18 is operated once a day, but it may be operated multiple times, thereby deodorizing the entire space in the toilet room.

FIG. 2 shows a partial circuit diagram of a deodorizing device showing another embodiment of the present invention, in which the low mode control circuit 18
a is composed of a clock circuit 20a, a storage section 24 that stores the time when the drive switch 23 of the main body of the device is turned on, and a calculation section 25 that operates the blower 14 and the ozone generator 15 based on the signals of the storage section 24. It is something. The rest is the same as the embodiment shown in FIG. 1, so the same reference numerals are given and the explanation will be omitted.

According to this embodiment, the time during which the toilet seat device is used is memorized, and the calculation unit 25 automatically calculates the time period during the day when the toilet seat device is not used, and the operation is performed in a low mode. This allows the vehicle to be driven to suit one's lifestyle, further improving safety.

[0016]

Effects of the Invention As explained above, the deodorizing device of the present invention utilizes the strong oxidizing performance of ozone, and includes a high mode control circuit for operating the blower at a large air volume, and a high mode control circuit for operating the blower at a large air volume. It is equipped with a low mode control circuit that operates the ozone generator as well as the operation, and the following effects can be obtained.

When the equipment to which the deodorizing device is attached is used by a person, the high mode control circuit operates and the blower is operated at a large air volume to perform deodorization, and the deodorizing device is automatically turned off at a predetermined time when the equipment is not in use. Then, the low mode control circuit operates to operate the blower with a small air volume, and also drives the ozone generator, promoting the decomposition of malodorous components adsorbed on the catalyst surface and regenerating it. Therefore, deodorization can be carried out over a long period of time without increasing the amount of catalyst even in equipment that requires a large amount of air.

[0018] When the ozone generator operates, since the air volume is small, the space velocity of the deodorizing catalyst is reduced, making it possible to prevent ozone from leaking to the outside and improving safety. On the contrary, it is possible to increase the ozone concentration compared to the conventional method, and it is possible to improve the decomposition efficiency of malodorous components.

By operating the low mode control circuit according to predetermined intervals, not only a central deodorizing function but also a spatial deodorizing function can be obtained.

[Brief explanation of drawings]

FIG. 1: Cross-sectional view of a deodorizing device in one embodiment of the present invention.

[
Figure 2: Circuit diagram showing another embodiment

[Figure 3] Cross-sectional view of a conventional deodorizing device

[Explanation of symbols]

10　Deodorizing device 11 Inlet 12 Discharge port 13 Exhaust passage 14　Blower 15 Ozone generator 16 Deodorizing catalyst odor 17 High mode control circuit 18, 18a Low mode control circuit 19, 19a Clock circuit 20 Setting circuit 21 Comparator 23 Drive switch 24 Memory section 25 Arithmetic section

Claims (3)

[Claims] 1. An exhaust passage having an inlet and an outlet, a blower for sucking malodorous components into the exhaust passage, an ozone generator disposed within the exhaust passage, and a downstream of the ozone generator. a deodorizing catalyst provided on the side, a high mode control circuit that operates the blower at a large air volume, and a high mode control circuit that operates the blower at a small air volume at a predetermined time and drives the ozone generator to apply ozone to the deodorizing catalyst. Deodorizing device with low mode control circuit to supply. [Claim 2] The low mode control circuit includes a clock circuit, a setting circuit that sets the operating time, and a comparator that compares and calculates signals from the clock circuit and the setting circuit and operates the blower and the ozone generator. The deodorizing device according to claim 1. 3. The low mode control circuit includes a drive switch of the main body of the device to which the deodorizing device is attached, a clock circuit, a memory section that stores the time when the drive switch is turned on, and a signal from the memory section. 2. The deodorizing device according to claim 1, further comprising a computing section that operates the blower and the ozone generator.