JPH09972A - Ozone deodorization dust collector - Google Patents

Abstract

PURPOSE: To perform quantitative and timewise switching control between indoor air purification and deodorization or sterilization by controlling each of the discharge intervals of an ionization electrode and the surface area of an ozonization part through which an output fluid from a blowing means is passed and controlling the control means by a timer to selectively control a dust collecting function and a deodorizing function. CONSTITUTION: A switching damper 14 is installed between a blowing means 5 and an ozonization catalyst 4 to switch an air flow passage between that toward an air discharge port 11 and that toward the ozonization catalyst 4. In the case of dust collection or ozone effluence, the ozonization catalyst 4 is shielded by the switching damper 14 to cut off the passing of air 6. When ozone 7 is filled indoors, the air discharge port 11 is shielded by the switching damper 14 to pass air 6 to the ozonization catalyst 4. Voltage applied to an ionization electrode is controlled by a control circuit 12. The ozone generated quantity is increased and the ozonized quantity is decreased, and indoor deodorizing and sterilization are performed and also timewisely controlled by a timer function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an equipment device for cleaning and deodorizing or sterilizing an environment such as a work space or a living space. In particular, the present invention relates to a device that combines deodorization and sterilization with ozone and air purification with dust collection.

[0002]

2. Description of the Related Art In a conventional electrostatic precipitator, an unequal electric field is formed by a negative discharge electrode and a positive dust collection electrode, and when the applied voltage of this electric field is appropriately increased, so-called corona discharge occurs and Negative ions are generated and move toward the dust collecting electrode. When dust is passed through this electric field, the dust collides with negative ions to become a negatively charged body, and the dust is collected by the dust collecting electrode by Coulomb force. Regarding the equipment having the above-mentioned function, for example, as disclosed in Japanese Patent Laid-Open No. 6-262098, the dust collecting function is handled by an electric dust collector, and the deodorizing or air sterilizing action is handled by an ozone generator. Was becoming. FIG. 14 shows a conventional ozone deodorizer with an electric dust collector. The electric dust collector 1 only collects dust from the intake air 6, and an ozone generator 8 and a control circuit for the generated ozone are provided for deodorization or sterilization. Is configured. Further, Japanese Unexamined Patent Publication No. 6-126210 discloses an air purifier provided with means for suppressing dust collection of ozone and exhaust gas concentration of ozone, and in addition, Japanese Utility Model Laid-Open No. 61-150025.
Japanese Patent Laying-Open No. 4-78456 discloses the same thing, but these are for decomposing ozone generated in the device in the device.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the prior art disclosed in Japanese Patent Publication No. 098, the equipment is expensive and large-scaled for both the electrostatic precipitator and the ozone generator using a fine ceramic as a dielectric layer. An object of the present invention is to provide an ozone deodorizing dust collector in which an ozone generating function is added to the electric dust collecting unit itself at low cost, and using the deodorizing dust collector of the present invention, deodorizing sterilization of air taken in this device. At the same time, the generated ozone is released to the outside of the equipment to simultaneously purify the indoor air by collecting dust and to obtain a system effect that enables quantitative and time-switching control operation of deodorization or sterilization. Is.

[0004]

In order to solve the above-mentioned problems, the present invention is configured to perform the following various controls. First, by controlling the voltage applied to the ionization electrode of the electrostatic precipitator, it becomes possible to control the amount of ozone generated from the ionization electrode. Secondly, by providing a switching damper that allows selection of air blowing to the ozone decomposition catalyst, it becomes possible to control the amount of decomposition of the ozone. Thirdly, the ozone decomposition amount can be controlled by controlling the ozone passage area of the ozone decomposition catalyst. Fourth, by controlling the air volume of the air blowing means, the ozone passing air velocity of the ozone decomposing catalyst is controlled, and the ozone decomposing amount can be controlled. Fifth, by controlling the discharge interval of the ion collector of the electrostatic precipitator, it is possible to control the amount of ozone generated from the ionizer of the electrostatic precipitator. Furthermore, the sixth
Makes it possible to control the ozone generation amount from the electrostatic precipitator or the ozone decomposition amount of the ozone decomposition catalyst by the ozone concentration detector and the control circuit. Seventh, by controlling the amount of ozone generated or the amount of ozone decomposed with a timer function, it is possible to automatically switch between dust collection, deodorization, and sterilization operation. Eighth, a human body detection sensor is provided, and when the human body is detected, it is possible to stop the release of ozone to the outside of the device. That is, the above-mentioned object is, as described in the claims, an electric precipitator that collects dust by causing corona discharge in the electric field housed in the case and consisting of the ionization pole and the dust collection pole, First control means for controlling the amount of ozone generated by the voltage applied to the ionizing electrode, an ozone decomposing unit containing a catalyst for decomposing ozone generated in the ionizing electrode, and a fluid containing the generated ozone to the outside. In an ozone deodorizing dust collector having a blowing means for discharging and a second controlling means for controlling the amount of ozone decomposition, the first control means for controlling the discharge interval of the ionizing electrode and the output fluid from the blowing means are It has a second control means for controlling the surface area passing through the ozone decomposing section, and a third control means including a timer circuit for driving the first and second control means,
It is achieved by an ozone deodorizing dust collector characterized by performing selective control of dust collecting and deodorizing functions.

[0005]

The electric dust collector is constructed so that ozone is generated from the ionization electrode. However, when the device is operated as the dust collector, dust is collected in the electric dust collector, and Odor can be deodorized and sterilized by the chemical action of ozone. Ozone generated from the ionizing electrode is treated by the ozone decomposition catalyst arranged in the downstream portion of the electrostatic precipitator. Further, by increasing the amount of ozone generated from the ionization electrode or by reducing the ozone treatment amount by the ozone decomposition catalyst, ozone is released outside the device, and the deodorization and sterilization control of the indoor where the device is installed is controlled by using the timer function. Can be controlled in time. Furthermore, by stopping the electrostatic precipitator and taking in air only to the ozone decomposing catalyst, it is possible to decompose the ozone released indoors where the apparatus is installed.

[0006]

1 is a sectional view showing the basic construction of an ozone deodorizing dust collector of the present invention. In FIG. 1, when collecting the suction air 6, a positive voltage is applied to the ionization section 2,
The dust ionized in the ionization unit 2 is collected by the dust collecting electrode 3.
A small amount of ozone generated in the ionization part 2 is generated by the ozone decomposition catalyst 4
It is decomposed by and released to the outside of the device. When the ozone 7 is discharged to the outside of the apparatus to deodorize and sterilize the indoor air in which the apparatus is installed, the ionization electrode applied voltage control circuit 1 is applied to the ionization electrode 2.
3 is used to apply a negative voltage. When the voltage applied to the ionization electrode is the same voltage and the positive and negative polarities are reversed, the amount of ozone generated is minus 10 times greater than plus, so this ozone is used for release to the outside of the apparatus. The ozone decomposing ability of the ozone decomposing catalyst 4 is represented by the formula: space velocity (SV) = (amount of gas passing through catalyst) / (catalyst volume).

FIG. 2 is a characteristic diagram showing the ozone concentration corresponding to the constituent parts during the dust collecting operation in the ozone deodorizing dust collector shown in FIG. 1, and FIG. 3 shows the ozone concentration corresponding to the constituent parts during the ozone releasing operation. It is a characteristic view to show. As shown in FIG. 2, when only dust collection is performed, the amount of ozone 7 generated from the ionization electrode 2 is set to be equal to or less than the capacity of the ozone decomposition catalyst 4. Further, as shown in FIG. 3, when ozone is released to the outside of the device, the amount of ozone generated during dust collection and the ozone decomposing ability are 10
Since twice as much ozone is generated at the ionization electrode, the remaining 90% of ozone is discharged outside the device. That is, the large amount of released ozone 7 is used to deodorize and sterilize the inside of the room where this device is installed. FIG. 4 is a diagram showing an operating state of ozone treatment in the ozone deodorizing dust collector shown in FIG. 1. In FIG. 4, in order to treat the ozone 7 filled indoors, the air suction port 10 is used with the electrostatic precipitator 1 stopped.
Ozone 7 is taken from the ozone, and the ozone is decomposed by passing through the ozone decomposition catalyst 4. As a result, the electrostatic precipitator 1 and FIG.
The conventional ozone generator 8 shown in FIG.
Any mode of dust collection, deodorization, and sterilization can be selected.

An embodiment of the present invention will be described below with reference to FIGS. <First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. The present embodiment is an embodiment in which a switching damper 14 is provided between the air blowing means 5 and the ozone decomposition catalyst 4, and the flow path of the air 6 is switched to the direction of the air outlet 11, and as shown in FIG. In the case of release, the switching damper 14 shields the ozone decomposition catalyst 4 and does not allow the air 6 to pass therethrough. As shown in FIG. 6, when the process of filling the interior of the room with the ozone 7 is performed, the air exhaust port 11 is shielded by the switching damper 14 so that the air 6 passes through the ozone decomposition catalyst 4. That is, in FIG. 5, the ozone decomposition treatment is 0%, and conversely, in FIG. 6, the ozone decomposition treatment is 100%.
In this way, by switching the flow path of the air 6, the decomposition ability of the ozone decomposition catalyst 4 can be efficiently utilized.

<Second Embodiment> A second embodiment of the present invention is shown in FIG.
This will be described below. FIG. 7 is a diagram showing an embodiment for adjusting the amount of ozone decomposition. That is, the passage area control means 15 for the air 6 is provided upstream of the ozone decomposing catalyst 4, and the space passage speed, which is an index of the ozone decomposing ability, is adjusted and controlled to adjust the ozone concentration depending on the amount of ozone decomposing. Therefore, according to the present embodiment, the ozone decomposing ability of the embodiment shown in FIGS. 5 and 6 can be set to an intermediate value between them, and thereby, the ionization electrode for adjusting the ozone generation amount can be set. The applied voltage control circuit 13 can be omitted.

<Third Embodiment> FIG. 8 shows a third embodiment of the present invention.
This will be described below. Regarding the ozone decomposing ability of the ozone decomposing catalyst 4, it is possible to adjust and control the suction force by increasing or decreasing the wind speed passing through the ozone decomposing catalyst 4. In this embodiment, an air volume control circuit 18 is provided in the blower means 5 as means for controlling the passing wind speed. Thereby, the ionization electrode applied voltage control circuit 13 for adjusting the ozone decomposition amount and adjusting the ozone generation amount can be omitted.

<Fourth Embodiment> A fourth embodiment of the present invention is shown in FIG.
This will be described below. The amount of ozone generated from the ionization electrode 2 can be controlled not only by the voltage applied to the ionization electrode 2 but also by changing the discharge interval 16 of the ionization electrode 2 to increase or decrease the discharge current. Therefore, by installing the discharge interval control means 17 of the ionization electrode 2, the applied voltage control circuit 13 for the ionization electrode 2 for controlling the ozone generation amount can be eliminated.

<Fifth Embodiment> A fifth embodiment of the present invention is shown in FIG.
This will be described with reference to 0. In this embodiment, since the ozone concentration detector 12 and the circuit for controlling the ozone generation amount based on the ozone concentration detected by the ozone concentration detector 12 are provided in the air outlet 11, high concentration ozone is harmful to the human body. When the ozone concentration is higher than the set ozone concentration, the operation is stopped or an alarm is issued, so that the control operation can be performed with the ozone concentration in a safe and reliable range.

<Sixth Embodiment> A sixth embodiment of the present invention is shown in FIG.
1 will be described. In the present embodiment, the air outlet 11 is provided with an ozone concentration detector 12 and a circuit for controlling the amount of ozone decomposition based on the ozone concentration detected by the ozone concentration detector 12.
When the ozone concentration harmful to the human body exceeds the set value, the operation is stopped or an alarm is issued to enable the control operation with the ozone concentration in a safe and reliable range.

<Seventh Embodiment> FIG. 12 shows the operating condition of the ozone deodorizing and dust collecting apparatus according to the seventh embodiment of the present invention, and is a diagram showing the configuration of each part (a) and a diagram showing the ozone concentration corresponding to the operation mode (b). ). As shown in FIG. 12B, indoor air is mainly collected by the dust collection operation during a time zone from 8:00 to 20:00, that is, when there are people in the store. 20
At the time when the store is closed after that time, ozone is generated, and at 21:00, the ozone concentration in the room is maximized to fill the ozone. On the other hand, the dust that is considered to remain during the time period from 20:00 to 21:00 is collected. During the period from 21:00 to 7:00 the next morning, the interior of the store is deodorized and sterilized by filling the store with ozone. The ozone remaining in the store is decomposed by the ozone decomposition catalyst during the period from 7 o'clock to 8 o'clock before the store is opened. The above periodic operation can be manually switched, but the operation mode can be automatically switched over for 24 hours by incorporating a timer function in the operation control circuit. Further, as shown in FIG. 13, by setting the timer circuit 19 and the human body detection sensor 20 in parallel, when the presence of a person is detected during the nighttime operation in the ozone generation mode, the operation is stopped or an alarm is issued. This enables safe driving.

[0015]

By implementing the present invention, since the ionization electrode of the electrostatic precipitator is used as the ozone generator of the ozone precipitator, the structure of the ozone deodorizer with the electrostatic precipitator can be simplified. it can. In addition, by controlling the amount of ozone generated and the amount of ozone decomposed, it is possible to switch between dust collection operation of indoor air, deodorization of the room, and sterilization operation. Furthermore, the use of ozone concentration detectors and human body detection sensors Due to
It is possible to carry out safe driving in which the ozone concentration and the ozone generation amount are controlled.

[Brief description of drawings]

FIG. 1 is a sectional view showing a basic configuration of an ozone deodorizing dust collector of the present invention.

FIG. 2 is a characteristic diagram showing ozone concentrations corresponding to constituent parts in a dust collecting operation of the ozone deodorizing dust collector shown in FIG.

FIG. 3 is a characteristic diagram showing ozone concentrations corresponding to constituent parts during ozone release operation in the ozone deodorizing dust collector shown in FIG.

FIG. 4 is a diagram showing an operating state of ozone treatment in the ozone deodorizing dust collector shown in FIG. 1.

FIG. 5 is a sectional view showing a first embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 6 is a sectional view showing a first embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 7 is a cross-sectional view showing a second embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 8 is a sectional view showing a third embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 9 is a sectional view showing a fourth embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 10 is a cross-sectional view showing a fifth embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 11 is a sectional view showing a sixth embodiment of the ozone deodorizing dust collector of the present invention.

FIG. 12 is a diagram showing an operating condition of an ozone deodorizing dust collector of the present invention according to a seventh embodiment.

FIG. 13 is a diagram showing another embodiment of the operating condition by the ozone deodorizing dust collector of the present invention.

FIG. 14 is a cross-sectional view of an ozone deodorizer equipped with the ability of electrostatic precipitator according to the prior art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electrostatic collection part 2 ... Ionizing electrode 3 ... Dust collection electrode 4 ... Ozone decomposition catalyst 5 ... Air blowing means 6 ... Air 7 ... Ozone 8 ... Ozone generator 9 ... Case 10 ... Air suction port 11 ... Air discharge port 12 ... Ozone concentration detector 13 ... Ionization electrode applied voltage control circuit 14 ... Switching damper 15 ... Passage area control means 16 ... Ionization electrode discharge interval 17 ... Ionization electrode discharge interval control means 18 ... Air volume control circuit 19 ... Timer circuit 20 ... Human body detection sensor 21 ... Corona discharge 22 ... Ionization line

Claims (2)

[Claims] 1. An electric dust collecting section for collecting dust by causing corona discharge in an electric field composed of an ionizing pole and a dust collecting pole housed in a case, and an amount of ozone generated is controlled by a voltage applied to the ionizing pole. A first control unit for controlling the amount of ozone decomposed, an ozone decomposing unit containing a catalyst for decomposing the ozone generated in the ionization electrode, a blower for discharging the generated ozone-containing fluid to the outside, and a control unit for controlling the amount of ozone decomposition. In an ozone deodorizing dust collector having two control means, a first control means for controlling a discharge interval of the ionization electrode and a second control for controlling a surface area of an output fluid from the blower means passing through the ozone decomposing section. An ozone deodorizing dust collector having means and a third control means including a timer circuit for driving the first and second control means, and performing selective control of dust collecting and deodorizing functions. 2. The blower means is provided upstream of the ozone decomposing section, and leads to an output fluid from the blower means in a direction different from that of the ozone decomposing section and the ozone decomposing section, or to the side path. 2. An ozone deodorizing dust collector according to claim 1, further comprising a means for controlling the amount of ozone decomposition, which comprises a damper for switching the flow paths of the above.