JP2006110403A - Cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning apparatus for removing an indoor bad smell, a virus, a mold or the like safely and efficiently without getting any user's help. <P>SOLUTION: The cleaning apparatus is provided with a discharge electrode 2, a counter electrode 3, a pulsative high voltage applying means 4 for applying a pulsative high voltage between these electrodes, a water generating means 5 for generating water on the discharge electrode 2 and/or the counter electrode 3 without supplying water and a heat sink 6 arranged adjacently to the water generating means. A radical, an ion and a minute particle of water containing a large quantity of radicals and ions are produced in a discharge zone by utilizing the water and electric discharge generated between the electrodes without getting any user's help and without supplying water. The produced radical, ion and minute particle of water are discharged to the downstream side of the discharge zone. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a purification device for gas, liquid, solid and the like.

  Conventionally, using active particles such as ions and ozone, food-related items such as food and cooking utensils, the surface of objects where microorganisms are problematic in public health, and the microorganisms that exist in the space where these objects are stored There are known methods for preventing the propagation of potatoes.

  For example, by controlling a discharge current when ionizing and ozonizing a gas such as air to the ionization chamber, a gas containing a predetermined low concentration of ozone and high concentration of ions is generated, and the ionization chamber or the ionization chamber is generated. There is a method and apparatus for preventing microbial growth in which microorganisms are prevented from propagating by synergistic effects of ozone and ions by blowing a gas generated in an ionization chamber in a communicating space or on an object (for example, patent document) 1).

In addition, by supplying tap water to the water tank and immersing the water-absorbing electrode in the supplied water, this water and the discharge between the electrode and the counter electrode can be used to provide a longer-life oxidizing power in the discharge region. There is a discharge atomization technology applied purification device that generates high radicals, ions, and the like and fine water particles containing them, and discharges them downstream of the discharge region, and sterilizes, deodorizes, and removes harmful substances from the discharged region.
JP-A-9-108313

  However, the above-described conventional method and apparatus for preventing microbial growth are intended to treat microorganisms existing on the surface of the object or the storage space, but the generated ions and the like are very unstable, so that the lifetime as ions is reduced. However, it was very short and changed to a stable substance before spraying on the object, and there was a problem that it was not possible to sufficiently prevent the growth of microorganisms.

  In addition, the conventional discharge atomization technology applied purification device described above needs to be supplied with water, and when the water runs out, it is necessary to bother the user to supply and supply water. It was.

  The present invention solves the above-described problems, and provides a purification device that deodorizes and disinfects indoor odors, viruses, fungi, and the like more safely and efficiently without the need for bothering the user. It is for the purpose.

  In order to solve the above problems, a purification device of the present invention includes a discharge electrode, a counter electrode, an ultrasonic pulse high voltage applying unit that applies a high voltage of a pulse frequency in an ultrasonic region between these electrodes, It comprises a water generating means for generating water without supplying water to the discharge electrode and / or the counter electrode, and a heat sink provided close to the water generating means, so that there is no need to bother the user. With water supply, water and discharge generated between the electrodes can be used to generate radicals, ions, etc., and fine water particles containing a large amount of them in the discharge region, which can be released downstream of the discharge region. . Further, by applying a pulsed high voltage, generation of ozone harmful to the human body can be reduced, and spark discharge can be suppressed. Also, if the heat sink is provided in close contact with the water generating means 5, for example, when the water generating means is a Peltier element, if one is a cooling surface, the other becomes a heat radiating surface, and the heat sink is in close contact with the heat radiating surface. As a result, the discharge electrode can be efficiently brought to a temperature below the dew point, and the generation of water can be promoted.

  As described above, according to the present invention, it is possible to provide a purification device that deodorizes and disinfects indoor odors, viruses, fungi, and the like more safely and efficiently without the need for bothering the user.

  A first aspect of the invention relates to a discharge electrode, a counter electrode, ultrasonic pulse high voltage applying means for applying a high voltage having a pulse frequency in an ultrasonic region between these electrodes, the discharge electrode and / or the counter electrode. It is provided with water generating means for generating water without water supply, and a heat sink provided close to the water generating means, and is generated between the electrodes without water supply without bothering the user's hand. By utilizing water and discharge, radicals, ions, etc., and fine water particles containing a large amount of them can be generated in the discharge region and released downstream of the discharge region. Further, by applying a pulsed high voltage, generation of ozone harmful to the human body can be reduced, and spark discharge can be suppressed. Also, if the heat sink is provided in close contact with the water generating means 5, for example, when the water generating means is a Peltier element, if one is a cooling surface, the other becomes a heat radiating surface, and the heat sink is in close contact with the heat radiating surface. As a result, the discharge electrode can be efficiently brought to a temperature below the dew point, and the generation of water can be promoted.

  In the second invention, protrusions are provided on the discharge electrode and / or the counter electrode, the discharge can be generated efficiently, and water and discharge generated between the electrodes are used to generate radicals and ions in the discharge region. Etc., and fine water particles containing a large amount of them can be generated and discharged downstream of the discharge region.

  In a third aspect of the invention, the electrode provided with the water generating means is subjected to a hydrophilic treatment, so that a thin film of condensed water can be generated on the electrode surface, and discharge can be generated more efficiently. A larger amount of radicals, ions, etc., and fine water particles containing a larger amount of them can be generated and released downstream of the discharge region.

  According to a fourth aspect of the present invention, the counter electrode has a net-like or annular shape, and generates a large amount of radicals and ions in the discharge region and fine water particles containing a large amount thereof, and then inhibits the counter electrode. Thus, the discharge can be performed more efficiently downstream and the size can be reduced.

  According to a fifth aspect of the invention, the ultrasonic pulse high voltage application means applies a high voltage having a predetermined minimum pulse width, and further reduces the generation of ozone harmful to the human body by shortening the voltage application time. In addition, spark discharge can be suppressed and the discharge sound can be reduced.

  According to a sixth aspect of the invention, the ultrasonic high voltage applying means applies a high voltage having a negative pulse waveform, and can supply clean air containing negative ions.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.

  1 and 2 are a schematic view and a cross-sectional view of a purification device according to an embodiment of the present invention. In addition, although gas, such as air, is demonstrated below, it is the same also with liquids, such as water, and solid.

The purification unit 1 is arranged in a gas flow path, a discharge electrode 2 is arranged, a counter electrode 3 is arranged opposite to the discharge electrode 2, and between the discharge electrode 2 and the counter electrode 3. A discharge region 9 is formed. Reference numeral 7 denotes the purification unit upstream airflow, and 8 denotes the purification unit downstream airflow.

  The ultrasonic pulse high-voltage applying device 4 includes an electrode (plus or minus) 41 connected to the discharge electrode 2 and a ground electrode 42 connected to the counter electrode 3, and between the discharge electrode 2 and the counter electrode 3. The pulsed high voltage capable of generating discharge is applied.

As this ultrasonic pulse high voltage application device 4, for example, an IGBT (Inslated) is added to a voltage doubler circuit.
An electrical circuit or the like in which switching means such as a gate bipolar transistor) is arranged to generate a desired pulse waveform and a high-frequency voltage and boosted by a high-voltage transformer is used. However, as long as a high voltage having a desired pulse waveform and frequency can be applied, the present invention is not limited to this and can be used.

  The water generating means 5 generates water without supplying water, such as a Peltier element, and is provided in close contact with the discharge electrode 2. Thereby, when the discharge electrode 2 becomes a temperature below the dew point, condensed water 10 is generated on the surface of the discharge electrode 2. For example, when the temperature is 22 ° C. and the humidity is 30%, dew condensation water 10 is generated on the surface of the discharge electrode 2 when the discharge electrode 2 reaches a dew point, that is, a temperature of 3.6 ° C. or lower. Note that the Peltier element may be provided in close contact with the counter electrode 3.

  Furthermore, the heat sink 6 is provided in close contact with the water generating means 5. For example, if the water generating means 5 is a Peltier element, if one is a cooling surface, the other is a heat radiating surface, and the heat sink 6 is brought into close contact with the heat radiating surface, whereby the discharge electrode 2 is efficiently brought to a temperature below the dew point.

  Hereinafter, the operation of the above configuration will be described.

  A high voltage is applied between the discharge electrode 2 and the counter electrode 3 by the ultrasonic pulse high voltage application device 4, and condensed water 10 is generated on the discharge electrode 2 by the water generating means 9. As a result, the discharge generated between the electrodes and the dew condensation water 10 are used to generate radicals, ions, and the like and fine water particles 11 containing them in the discharge region 9, and the downstream of the discharge region, that is, the purification unit downstream 8. Can be released.

  For example, if simplified

As a result of this reaction, downstream of the discharge region 9, OH radicals and ions, H2O2 radicals and ions, etc., radicals and ions with high oxidizing power, and water particles 11 containing them can be produced in abundance.

  The generated radicals and ions and the water particles 11 containing them have high oxidizing power, can destroy the outer wall and protein of the microorganism, and the microorganism is killed or inactivated. That is, by releasing the generated OH radicals and ions, H 2 O 2 radicals and ions, radicals and ions having high oxidizing power, and water particles 11 containing them, the discharged region is discharged downstream. It can be sterilized, deodorized, harmful substances removed and purified.

The pulsed high voltage in the ultrasonic region to be applied is a high voltage that can efficiently generate a discharge as shown in FIGS. 5 to 9, for example, and the size of the gap between the discharge electrode 2 and the counter electrode 3. For example, a pulse waveform of about 7 kV or more when the gap between the discharge electrode 2 and the counter electrode 3 is about 10 mm, about 6 kV or more when the gap is about 8 mm, and about 4 kV or more when the gap is about 5 mm. A distorted high voltage is required.

  Note that by setting the pulse width to a minimum pulse width, it is possible to instantaneously raise the voltage, thereby causing a larger amount of electrons to be scattered at high speed in the discharge region 8 and reducing the voltage application time. It is possible to reduce generation of ozone harmful to the human body and to suppress spark discharge. Although a pulse width as small as possible is desirable, a more preferable purification effect can be obtained by setting it to about 5 μsec or less, that is, several μsec or less.

  Further, by applying a high voltage in the form of negative ultrasonic pulses, negative ions can be generated in the discharge region 9, and a clean air containing negative ions is supplied as the downstream airflow 7 to create a relaxing atmosphere. It becomes possible to provide.

  3 and 4 are schematic views of the discharge electrode 21 provided with protrusions and the counter electrode 31 having a net shape or an annular shape. In addition, about the discharge electrode 21 which provided the protrusion, if discharge is possible efficiently, the number of the protrusion part will not be limited at all. Thereby, discharge can be efficiently generated at the protrusion tip of the discharge electrode 21 provided with the protrusion. Further, the water particles 11 having a high oxidizing power can be efficiently discharged from the purification unit downstream 8 without being inhibited by the counter electrode 31, and the size of the purification unit 1 can be reduced.

  Further, the discharge electrode 21 is subjected to hydrophilic treatment. Thereby, the thin film-shaped condensed water 101 can be produced | generated on the electrode surface, and discharge can be generated more efficiently.

  In addition, if this purification apparatus is mounted in, for example, an air cleaner or an air conditioner having a large air volume, the purification performance can be further improved.

Schematic of the purification device in one embodiment of the present invention Sectional view of the purification device of FIG. Schematic of the purification device in one embodiment of the present invention Sectional view of the purification device of FIG. Schematic of pulsed high voltage waveform in one embodiment of the present invention Schematic of other pulsed high voltage waveforms Schematic of other pulsed high voltage waveforms Schematic of other pulsed high voltage waveforms Schematic of other pulsed high voltage waveforms

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Purification unit 2 Discharge electrode 3 Counter electrode 4 Pulse high voltage application apparatus 5 Water generating means (Peltier device)
6 Heat sink

Claims (6)

A discharge electrode, a counter electrode, ultrasonic pulse high voltage applying means for applying a high voltage of a pulse frequency in the ultrasonic region between these electrodes, and generating water without supplying water to the discharge electrode and / or the counter electrode A purifier comprising: water generating means to be moved; and a heat sink provided close to the water generating means. The purification apparatus according to claim 1, wherein a protrusion is provided on the discharge electrode and / or the counter electrode. The purification apparatus according to claim 1 or 2, wherein the electrode provided with the water generating means is subjected to a hydrophilic treatment. The purification apparatus according to any one of claims 1 to 3, wherein the counter electrode has a net shape or an annular shape. The purification apparatus according to any one of claims 1 to 4, wherein the ultrasonic pulse high voltage applying means applies a high voltage having a predetermined minimum pulse width. The purification apparatus according to any one of claims 1 to 5, wherein the ultrasonic pulse high voltage applying means applies a high voltage having a negative pulse waveform.

Images