KR20080114191A - Electrostatic oil mist space filter trap using pre-charge and metal fiber layer - Google Patents

Abstract

An oil mist collecting apparatus using a metal fiber phased spatial electrostatic filter is provided to efficiently remove fine oil mist and dust contained in air. In a metal fiber phased spatial electrostatic filter for removing oil mist and dust, an apparatus for electrostatic collection of oil mist using an electrostatic filter comprises: corona discharge electrodes(12) for causing corona electric discharge to electrically charge fine oil mist and dust; an electrostatic filter(13) manufactured in a fiber shape using stainless steel or conductive metal thread in order to collect and remove the electrically charged oil mist and dust by electrostatic force; and an apparatus control part controlling and supplying voltage and current required in the corona discharge electrodes and electrostatic filter.

Description

Electrostatic Oil Mist Space Filter Trap Using Pre-Charge and Metal Fiber Layer}

1; Configuration of Charged Electrode and Metal Fiber Electrostatic Filter for Micro Oil Mist Collection According to the Present Invention

2; Schematic diagram of an oil mist electrostatic collecting apparatus employing a metal fiber electrostatic filter for collecting fine oil mist according to the present invention

3; Form of dust collection by general filter medium, charged electrode and electrostatic filter

<Description of drawing number>

11; Spatial electrostatic capture device 12; Corona discharge electrode

13; Electrostatic filters on metal fibers 14; Power supply of corona discharge electrode

15; Power supplied to the electrostatic filter 16; Spatial electrostatic filter inlet

17; Space static filter outlet

21; Airflow dispersion structures 22; Hydro filter

23; Prefilter 24; Suction fan

The present invention is installed in a workplace using a variety of lubricants such as cutting, grinding and cleaning to efficiently clean the air into clean air to generate a corona discharge with a high voltage low current to the fine oil mist and dust contained in the air (-) An electrostatic filter having a particle charging part to charge, and filled with a stainless steel or a thin fibrous metal thread capable of charging, is manufactured, and a high voltage and low current is applied to the electrostatic filter made of a fibrous metal material of the fibrous metal material. The present invention relates to an oil mist electrostatic collecting apparatus using a precharge and a metal fiber layer designed and manufactured to efficiently collect and remove the (-) charged fine oil mist and dust.

Conventional oil mist recovery and treatment techniques include a filter dust collection method, a wet scrubber, a cyclone using centrifugal force, and an electrostatic collection method. Among them, the most widely used method for removing oil mist is a glass fiber filter. Filter dust collection technology, which has the advantage that the initial cost is relatively inexpensive, but the pressure drop is easily increased due to clogging phenomenon, energy consumption is large, there is a problem that is difficult to operate for a long time due to frequent filter replacement. In addition, in some cases, due to contamination of the filter is almost impossible to reuse, there is a problem that the maintenance cost required to replace the filter increases a lot.

The basic principle of the cyclone method is to separate the oil and air by centrifugal force by colliding the oil mist that enters the inlet by the blower with the rotating drum with the motor. It can improve, but there is a limit to remove fine oil mist.

Another related art is in the case of Korean Patent Publication No. 1998-0074238, generates a high voltage to charge dust particles introduced from the exhaust gas, and charges the dust particles by corona discharge by the generated high voltage. The configuration is such that the charged dust particles are attached to the filter cloth, or because the charged dust is collected by the filter cloth, so there is a limit to efficiently collecting the charged dust, and the pressure drop is easily increased due to clogging. There is a problem that takes a lot of maintenance and repair costs due to frequent replacement.

The technical problem to be achieved by the present invention is to solve the problems of the prior art as described above and to solve them, it is installed in the workplace using a variety of lubricants and oil components such as cutting, grinding and cleaning to efficiently clean air In order to effectively collect and remove fine oil mist and dust contained in the air for purification, the particle charge part generates corona discharge with a power source capable of controlling DC voltage and current to the corona discharge electrode, thereby passing the fine oil through the discharge electrode. Charge the mist and dust, supply the optimum power according to the dielectric constant of the fine oil mist particles and the characteristics of the material by controlling the voltage during charging to charge the negative (-) charge, the charge to the (-) charge High voltage low voltage for efficient capture and removal of fine oil mist and dust It is an object of the present invention to implement an oil mist collecting device using a metal fibrous spatial electrostatic filter made of stainless steel or a thin metal thread capable of charging to be charged with a positive type.

Still another object of the present invention is to install a corona discharge electrode having a predetermined length in the horizontal direction in order to charge the fine oil mist and dust efficiently installed without disturbing the air flow is installed in the front end, stainless steel ( The fiber-shaped electrostatic filter, which is manufactured to form fine holes with a thin metal thread of about 20 μm of AISI 316L), is charged with high voltage and low current power to have different polarities to collect oil mist and dust by electrostatic force. The current is controlled by measuring a micro picoammeter that can measure up to 28 ㎂ (± 2) to control the current and save energy and provide efficient collection by supplying proper power for charging and collecting.

Another object of the present invention is to use a DC high voltage low current power supply to charge the particles, to finely control the current, and to control the charged oil mist and dust particles using Faraday Cup (FC) Measures the amount of charge and supplies power required for collection in proportion to the measured amount of charge to an electrostatic filter designed to have the opposite polarity to oil mist particles, reducing power consumption due to excessive current supply and supplying an appropriate amount of current It is to realize a device with high efficiency and high safety.

Another object of the present invention is to charge the incoming oil mist and dust by applying electric energy, and by charging the electrostatic filter to have a polarity opposite to the charged particles, Coulomb force and Polarization force To maximize the collection efficiency of fine oil mist and dust, and to cut off the power applied to the electrostatic filter or to apply the power to be the same polarity as the charged particles to collect the collected oil mist and dust more easily from the electrostatic filter It can be separated and dedusted, and due to the excellent durability of the metallic fiber, it is possible to use the electrostatic filter semi-permanently by being able to dedust and clean the filter without damage.

The present invention is installed in the workplace using a variety of lubricating oil or oil, such as cutting, grinding and cleaning in order to achieve the above object, safety and economical efficiency in removing fine oil mist and dust to purify with clean air efficiently It is equipped with a high-capacity and low-current particle charge portion to generate and charge corona discharge, and has a fibrous electrostatic filter made of thin stainless steel or a metal chamber capable of charging, and made of the fibrous metal material The present invention relates to an oil mist electrostatic collecting device using a precharge and a metal fiber layer designed to efficiently collect and remove charged fine oil mist and dust passing through the electrostatic filter by applying a high voltage and a low current to the electrostatic filter.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown and described in the drawings will be described as at least one or more embodiments, whereby the present invention described above The technical idea and its core composition and operation are not limited.

In the related art, in the related art, a method of using a wet scrubber or a carbon packed-bed to adsorb oil mist is used, but in the case of a wet scrubber, The fine oil mist is difficult to contact with water, and in the case of carbon, oil accumulates on the adsorption surface, and the adsorption rate rapidly decreases. One of the most efficient methods is the filtration method using a filter or frequent filter replacement. If the size is fine there is a problem of low efficiency. Accordingly, the technology of maximizing efficiency by connecting filters in series has been applied.

In the case of the electrostatic precipitating type which collects the oil mist with the electrostatic induction to the positive electrode of the discharge plate, the sampling efficiency of the fine size is very excellent, and there is an advantage that the high-capacity treatment can be performed with high efficiency as compared to the precipitating type or the cyclone type. In case of long-term use, the contamination of plate-type dust collecting plate is intensified, and it is impossible to maintain the performance even by washing, and it is inevitable to replace it. There is a problem that the performance is greatly changed according to the properties of the dust and the characteristics of the exhaust gas, such as re-scattering.

In order to solve the problems of the prior art as described above, the present invention provides a direct current voltage that can be controlled from 5 kW to 12 kW to the corona discharge electrode in order to charge the fine oil mist and dust from the particle charge part to the (-) charge. It is installed horizontally to increase the charging efficiency without disturbing the flow of electricity, and is configured to efficiently charge the fine oil mist and dust passing through the corona discharge by applying power.

The power applied to the corona discharge electrode for charging is corona to supply an appropriate amount of electric energy in consideration of particle characteristics such as dielectric coefficient and conductivity of the fine oil mist sucked by the suction fan to charge to negative (-) charge. The discharge electrode is configured to control from 5 kV up to 12 kV, and is configured to finely control low current. The charged oil mist and dust are configured to have a negative charge.

In addition, it is preferable to configure the power supply to the corona discharge electrode with a high voltage and low current power supply in consideration of the safety of users while efficiently charging the oil mist and dust passing through, but it is possible to supply various voltages and currents in the range where corona discharge is possible. It can also be used as a power supply.

The method of charging the charged oil mist and dust to a negative or negative charge can be achieved by supplying a negative high voltage or a positive high voltage to the electrode.

The electrostatic filter is a positively charged stainless steel or a thin metal thread that can be charged by applying a high voltage low current power to easily collect and remove oil mist and dust charged with the (-) particles by electrostatic force. The electrostatic filter manufactured in the shape is configured to efficiently collect and remove fine oil mist and dust charged with the negative (-).

The present invention is configured to remove oil mist and dust by using an electrostatic filter made of a thin metal thread of charged oil mist and dust, and charged with oil mist and dust with electrical energy, so that the fibrous filter dust collection and electrostatic force Electrostatic precipitation using the mixed form is configured to efficiently remove fine oil mist and dust. It looks at a specific embodiment according to the present invention.

EXAMPLES

A specific embodiment according to the present invention will be described with reference to FIGS. 1 and 2. The present invention is installed in the workplace using a variety of lubricating oils or oils in order to effectively clean the air cleansed in the particle charge unit to charge the oil mist and dust, the corona discharge electrode installed horizontally with a predetermined length of controllable DC voltage ( It is composed so that fine oil mist and dust particles which are applied to 12) by causing corona discharge are charged with negative charge.

The fine oil mist and dust power supply uses a high voltage (14) of the DC component, designed and manufactured to control the fine current in the power supplied with a low current, Faraday Cup (FC) It is configured to measure the overall charge amount of charged oil mist and dust, and to supply the required voltage and current for the collection to the electrostatic filter according to the measured charge amount to create the optimal collection condition.Faraday Cup When (FC)) is used, the total amount of charge that can be measured can be measured up to 10 ^-15 Coulomb.

The power source 14 applied to the corona discharge electrode 12 for charging is supplied with suitable electrical energy in consideration of particle characteristics such as dielectric coefficient and conductivity of the fine oil mist sucked by the suction fan 24 (- It is configured to allow voltage control from 5 kΩ to 12 kΩ to the corona discharge electrode 12 for charging so that it is charged with charge, and is configured to finely control the current, and the charged oil mist and dust particles are ( It is configured to have a charge. The corona discharge electrode may be configured to charge the oil mist and the dust particles to a positive charge and the electrostatic filter to have a negative polarity.

In addition, the power supply is preferably configured to be supplied to the corona discharge electrode 12 with a high voltage and low current power in consideration of the safety of the users while efficiently charging the oil mist and dust particles passing through, but various voltages in the range capable of corona discharge It can also be manufactured and used as a power source capable of supplying overcurrent.

The electrostatic filter 13 configured to have a positive polarity by applying a high voltage (14) low current to easily collect and remove the oil mist and dust particles charged with the (-) particles by electrostatic force is easy to clean. Stainless steel (AISI 316L) with excellent durability and conductivity, which is made of a thin metal thread of about 20 μm in diameter, made of a fibrous electrostatic filter 13, or a thin metal thread that can be electrically conductive. 13) is configured to efficiently collect and remove fine oil mist and dust particles charged by (-) by the corona discharge electrode (12).

The present invention charges oil mist and dust particles with electric energy, and uses the electrostatic filter 13 designed in the form of a fiber layer having fine pores with a thin metal thread capable of conducting the charged oil mist. It is configured to remove the trap, but designed and manufactured by varying the size of the pores formed in the electrostatic filter 13 designed and manufactured in the form of fibers, ultra-efficiently mixed in the form of filtration collected by micropores and electrostatic dust collection using the electrostatic force It is configured to capture and remove fine oil mist and dust.

The fibrous electrostatic filter 13 is charged with a high voltage and low current to collect oil mist and dust particles with electrostatic force due to different polarities, but with a micro picoammeter capable of measuring up to 28 ㎂ (± 2) It is configured to save energy by efficiently controlling and supplying the power required for charging and collecting by controlling the current applied to the electrostatic filter and to collect the oil mist and dust particles. As shown in the figure, unlike general filter media in which clogging occurs, the air flow is excellent while reducing the clogging of the pores, and is efficiently collected by the electrostatic force to quickly remove and remove the oil mist and dust.

The power applied to collect the oil mist and dust charged with (-) by electrostatic force by charging the electrostatic filter 13 made in the form of fiber with thin yarn of about 20 μm with (+) is DC in consideration of safety. A high voltage 15 of about 5 mA is applied in a low current state, and a current is applied to the electrostatic filter 13 using a fine picoammeter, and measured using the Faraday Cup (FC). Controls to supply power in proportion to the total charge charged with one (-) particle, but saves electric energy by supplying and controlling the electrostatic filter to have a charge amount equal to or slightly higher than the total charge amount of oil mist and dust particles. It is configured to collect oil mist and dust particles efficiently with proper amount of electrostatic force.

The present invention provides an electrostatic filter (13) made of a fiber type in which oil mist and dust particles are charged (-) by the corona discharge electrode and (+) charged oil mist and dust particles. It is configured to be collected naturally by electrostatic force, but passes through an electrostatic filter made in the form of a fiber with a fine space (pore) with a metal thread of about 20 ㎛, and is configured to remove fine oil mist and dust with high efficiency. , The electrostatic filter 13 made of a metal thread of about 20 μm can be selected in consideration of the oil mist's composition, size, and degree of contamination. It can be designed and manufactured in various ways by changing the size of), and can be supplied by varying the amount of voltage and current applied to the electrostatic filter.

The corona discharge electrode 12 and the electrostatic filter 13 may be configured to supply power by being fastened by a male and female fastening structure that can be detached from the device and detached from the device if necessary to facilitate cleaning or replacement.

In the fibrous electrostatic filter 13 according to the present invention, the voltage and current applied to the corona discharge electrode 12 for charging the oil mist particles contained in the air generated by generating a corona discharge for collecting oil mist using electrostatic force. And an oil mist electrostatic collecting device controller using a fibrous electrostatic filter for controlling and applying voltage and current for supplying electrical energy to the electrostatic filter 13 to collect charged (-) particles with electrostatic force. Doing.

The oil mist electrostatic collecting device using the fibrous electrostatic filter according to the present invention sucks air containing oil mist and dust particles to the suction fan 24, and evenly distributes the sucked air to efficiently charge and collect the air. After filtering and removing the relatively large wet mist and dust particles contained in the air through the air flow dispersion structure 21 to disperse the flow of the hydro filter 22 and the pre-filter 23, the corona discharge electrode 12 ) To charge the oil mist and dust to negative (-) charge, and to charge the oil mist and dust particles charged with (-) to (+) to collect fine oil mist naturally by electrostatic force. In order to remove the fine oil mist quickly and efficiently by passing through the electrostatic filter 13 made in the form of a fiber having a fine space, It is.

In the oil mist electrostatic collecting device using the fibrous electrostatic filter, the corona discharge electrode 12 is applied as a power source capable of supplying a DC high voltage 14 which can be controlled from DC 5 kV up to 12 kV, but fine oil mist. And the electrostatic filter 13 is charged with negative charge to dust, and the electrostatic filter 13 collects and removes the fine oil mist and dust particles charged with negative charge from the corona discharge electrode 12 by electrostatic force. It is designed and manufactured to apply a voltage 15 to maintain a positive polarity.

The oil mist electrostatic collecting device using a fibrous electrostatic filter layer measures the total charge of fine oil mist and dust particles charged by the corona discharge electrode using a Faraday cup, and measures the current supplied to the electrostatic filter. It is designed and manufactured to control and supply the amount of current or the amount of electrical energy supplied to the electrostatic filter in proportion to the total charge amount.

The oil mist electrostatic collecting device using the electrostatic filter manufactured according to the present invention charges the oil mist and dust with electrical energy, and charges the electrostatic filter to have a polarity opposite to that of the charged particles. Oil mist and dust collected by maximizing the collection efficiency of fine oil mist and dust by the polarization force, and cut off the power applied to the electrostatic filter or by applying power to the same polarity as the particles, and Dust can be easily removed from the electrostatic filter and reused. Due to the excellent durability of the metallic fibers, the filter can be dusted and washed without damage, and thus the electrostatic filter can be used semi-permanently.

The oil mist capacitive collecting device using a fibrous electrostatic filter for capturing the oil mist according to the present invention can collect fine oil mist, so it can be efficiently installed and used in a workplace using various lubricants such as cutting, grinding and cleaning. Industrial applicability is very high.

The present invention applies a direct voltage capable of voltage control to the corona discharge electrode in the particle charge unit to efficiently collect and remove fine oil mist and dust, thereby charging the fine oil mist and dust passing through the corona discharge, and high voltage and low current. It is a fiber-type electrostatic filter made of stainless steel or a thin metal thread that can be charged to have a low (+) polarity, and a metal fibrous electrostatic filter that can efficiently collect and remove fine oil mist and dust charged with the (-). By providing oil mist electrostatic collecting device, there is an effect that greatly contributes to the improvement of indoor air quality in the workplace.

Another effect of the present invention is to install a discharge electrode having a predetermined length in the horizontal direction in order to efficiently charge the fine oil mist and dust installed in the front end without disturbing the air flow, the thin metal thread The fabricated electrostatic filter layer is charged with high voltage and low current power to have different polarity to capture oil mist and dust by electrostatic force, and it is a fine picoammeter that can measure up to 28 ㎂ (± 2). By measuring the current to control the current to supply the power required for charging and collection, energy saving and efficient collection can be achieved.

Another effect of the present invention is to charge the oil mist and dust particles by applying electrical energy, and to charge the electrostatic filter to have a polarity opposite to the charged particles to the fine oil mist and dust by the coulomb force and polarization force Maximize the collection efficiency, cut off the power applied to the electrostatic filter or apply the power to have the same polarity as the particles, so that the collected oil mist and dust can be more easily separated from the electrostatic filter to be dedusted, and excellent durability of the metallic fiber Due to this, it is possible to use the electrostatic filter semi-permanently by allowing the filter to be dedusted and washed without damage.

Claims (7)

In the metallic fibrous space electrostatic filter for removing oil mist and dust, A corona discharge electrode for generating corona discharge to charge fine oil mist and dust; An electrostatic filter layer made of stainless steel or conductive metal thread in a fiber shape to collect and remove the charged oil mist dust by electrostatic force; And An oil mist electrostatic collecting device using an electrostatic filter having an oil mist electrostatic collecting device control unit for controlling and supplying the voltage and current required for the corona discharge electrode and the electrostatic filter. The method according to claim 1, The corona discharge electrode is applied at a DC 5 kV to a maximum 12 kW to apply a DC voltage, but charges fine oil mist and dust with negative (-) charge or positive (+). Device. The method according to claim 1 or 2, The electrostatic filter is an oil mist electrostatic collection using an electrostatic filter designed to maintain a positive charge by applying a DC voltage in order to adsorb and remove the fine oil mist and dust charged to the negative (-) charge in the corona discharge electrode by electrostatic force Device. The method according to claim 3, The electrostatic filter is manufactured in a fiber shape in which fine pores are formed of a yarn made of AISI 316L stainless steel, which is easy to clean, and has excellent durability and conductivity. Oil mist electrostatic collecting device using electrostatic filter designed to supply power with male and female fastening structure so that it can be easily attached and detached during cleaning and replacement. The method according to claim 3, The total amount of charge of the fine oil mist and dust charged by the corona discharge electrode is measured using a Faraday cup, An electrostatic filter designed to control and supply an amount of current so that the electrostatic filter is charged with a value equal to or greater than the total charge amount in proportion to the total charge amount by measuring the current supplied to the electrostatic filter with a picoammeter Oil mist electrostatic collecting device using. In the oil mist electrostatic collecting device using an electrostatic filter for removing oil mist and dust, A suction fan for sucking air containing fine oil mist and dust; A hydrofilter and a prefilter arranged in series for filtering relatively large particles in oil mist and dust contained in the air sucked by the suction fan; Corona discharge electrodes for generating corona discharges to charge fine oil mist and dust; An electrostatic filter made of stainless steel or conductive metal thread in a fiber shape to collect and remove the charged oil mist dust by electrostatic force; And An oil mist electrostatic collecting device using an electrostatic filter having an oil mist electrostatic collecting device control unit for controlling and supplying the voltage and current required for the corona discharge electrode and the electrostatic filter. The method according to claim 6, An oil mist electrostatic collecting device using an electrostatic filter having an air flow dispersion structure for dispersing air flow for efficient purification by dispersing oil mist and dust particles contained in the air sucked in front of the hydrofilter and the prefilter.

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