CN105817321B - Magnetic field auxiliary electrostatic formula oil fume purifier - Google Patents

Abstract

The magnetic field assisted electrostatic oil fume purifier provided by the present invention includes a casing and a fume air inlet, a filter screen, a polarizing device, an oil collection tank, a filter plate, an exhaust fan, and a fume outlet arranged sequentially in the casing. The air outlet, wherein the filter screen corresponds to cover the polarization device, and the filter plate corresponds to cover the oil collection tank; the oil fume purifier is provided with a plurality of magnet plates perpendicular to the electric field in the oil collection tank, wherein each magnet plate is composed of a plurality of small The magnetic blocks are alternately arranged to form alternately distributed auxiliary magnetic fields. The invention improves the oil fume adsorption capacity of the oil collection tank through the auxiliary magnetic field added in the oil collection tank, and further improves the overall oil fume removal efficiency of the oil fume purifier.

Description

Magnetic Field Assisted Electrostatic Fume Purifier

technical field

The invention relates to the technical field of oil fume purification, in particular to a magnetic field-assisted electrostatic oil fume purifier.

Background technique

According to the research report of the famous medical journal "The Lancet Respiratory Medicine", about 40% of the world's population suffers from health threats due to cooking and heating fumes and smoke. When frying or frying vegetables, PM2.5 rapidly soars 8 times to nearly 20 times, reaching a serious pollution level. Among them, the value of PM2.5 increases from 38 μg/m3 at the beginning to 787 μg/m3 within 5 minutes of cooking . The harm brought by indoor environmental pollution such as kitchen fumes cannot be ignored, and it may even cause diseases such as lung cancer. But how to effectively solve kitchen fume is an industry problem.

Most of the existing range hoods just discharge the oil fumes into the atmosphere from the kitchen. Although the kitchen is purified to a certain extent like this, the environment is destroyed simultaneously. According to research data from the Institute of Atmospheric Physics, Chinese Academy of Sciences, among the sources of PM2.5 in Beijing, motor vehicles, coal burning and construction dust, which have received much attention, account for about 50%, while cooking fumes, which are not paid attention to by people, account for 50%. 13%, which is even higher than the 8% of industrial emissions. Even if the current relatively advanced high-voltage electrostatic oil fume removal technology, due to the unreasonable design of the structural part of the high-voltage static electricity generation part), it still cannot really clean the oil fume.

There is a Chinese invention patent "High Voltage Electrostatic Oil Fume Treatment Device" with application number 01110705.7 (publication number CN 1380143A) disclosing a high voltage electrostatic oil fume processor, the principle of which is to absorb oil fume particles through an electrostatic field. The oil fume treatment unit of the oil fume processor is divided into three levels, the first level is the oil fume treatment unit of the diversion oil collection ball type, the second and third levels are the oil fume treatment unit of the spiral diversion oil collection tank type, and there are also multiple oil collection units board to absorb oil fumes. Alternatively, the Chinese utility model patent "Composite Electrostatic Oil Fume Purifier" with the patent number of 200620014431.4 (publication number CN 201002053Y) discloses a composite electrostatic oil fume purifier, the main components of which include a mechanically separated airflow homogenizer, an electrostatic Electric field dust removal unit and odor filtering device. Among them, the mechanical separation and air flow homogenization device slows down the oil fume flow rate through the S-shaped baffle and removes coarse oil fume particles. The slowing down of the flow velocity of oil particles is conducive to the adsorption of the oil collection tank. The corona electrode in the electrostatic electric field adopts a double zigzag shape, which controls the distance ratio between the corona electrode and the corona electrode, and the distance ratio between the corona electrode and the dust collecting plate, and can overcome the phenomenon of reverse ionization, corona hypertrophy, and arcing. Or, the Chinese invention patent "High Frequency Electrostatic Electric Curtain Range Hood" with application number 02135249.6 (publication number CN 1465918A) discloses a high frequency electrostatic air curtain type range hood, which uses an air curtain device and The combination of electrostatic degreasing device purifies oil fume. The use of the air curtain device effectively limits the diffusion of oil fume, and the combination with the electrostatic field is more conducive to the purification of oil fume. Or, the Chinese invention patent "Proximity Suction Electrostatic Fume Purifier" with application number 200910137136.6 (publication number CN101566363A) discloses a near suction electrostatic fume purifier, which is different from ordinary electrostatic fume purifiers in that it has a negative ion generator that can The negative ion gas is transported into the cabinet and the kitchen air, and the device is not in contact with oily fumes. In terms of structural design, the exhaust gas area is effectively isolated from the breathing area. Alternatively, the Chinese utility model patent "An Electric Field Structure for Electrostatic Oil Fume Purification" with application number 201220387883.2 (publication number CN202778715U) discloses an electric field structure for electrostatic oil fume purification. Composed of cylindrical honeycomb electric field, multiple sets of electric fields are distributed in one casing at the same time, which reduces the distribution lines, reduces the complexity of power distribution of the entire oil fume purifier, and reduces production failures such as shutdowns and production shutdowns caused by line failures . And, the Chinese invention patent "Ionization Magnetic Deflection Composite Cooking Oil Fume Purification Device" with the patent number of 02124982.2 (publication number CN1465445A) discloses a kind of ionization magnetic deflection compound cooking oil fume purification device (the working principle of the device is to use the magnetic field and The gaseous eddy current baffle deflects the direction of the polarized oil particles towards the dirt collection tank, and then absorbs the oil fume particles into the oil collection tank through the adsorption electrode on the oil collection tank. If the oil is blocked, the air duct of the device is charged (as opposed to the charged oil particles), and the principle of same-sex repulsion can be used to prevent the oil from being adsorbed in the air duct.

It can be seen from the above electrostatic oil fume purifiers that most of the existing electrostatic oil fume purifiers use a polarizing device to polarize the oil particles, and then use the electric field of the oil collection tank to make the charged oil particles under the force of the electric field. Under the action, the trajectory of motion is changed, and finally it is adsorbed to the anode plate of the oil collection tank. Although most of the oil particles in the oil fume are collected by the electrostatic field, the effect of completely purifying the oil fume cannot be achieved. The improvement method of most oil fume purifiers is to optimize the purification ability of the oil fume purifier by changing the shape of the device. However, there are also a few that are achieved by adding a magnetic field. For example, the Chinese invention patent "Ionization Magnetic Deflection Composite Cooking Fume Purification Device" uses a magnetic field as the power for the deflection of oil particles, but due to the different charges of different oil particles, and the With the T-shaped structure of the device, it is difficult for all oil particles to deflect to the oil collection tank and be adsorbed by the electrostatic field. In addition, the design adopts the electrification of the blower to prevent the adsorption of oil stains, which is a great safety hazard for users.

Contents of the invention

The object of the present invention is to provide a magnetic field assisted electrostatic oil fume purifier for solving the above technical problems.

A magnetic field-assisted electrostatic oil fume purifier, comprising a casing and an oil fume air inlet, a filter screen, a polarization device, an oil collection tank, a filter plate, an exhaust fan, and an oil fume air outlet accommodated in the casing and sequentially arranged, wherein The filter screen corresponds to cover the polarization device, and the filter plate corresponds to cover the oil collection tank; an anode plate and a cathode plate are arranged at intervals in the oil collection tank, and a plurality of magnet plates are arranged in the oil collection tank, and the plurality of magnet plates The plates are arranged at equal intervals, wherein each magnet plate is formed by a plurality of small magnetic blocks arranged alternately, and the direction of the magnetic field and the direction of the electric field in the oil collecting tank are perpendicular to each other, which is used to enhance the adsorption capacity of the oil collecting tank.

Preferably, four magnet plates are arranged at equal intervals in the oil collecting tank.

Preferably, the oil fume purifier further includes a control system, the control system includes an oil fume sensor, a processor and a voltage control device; The oil fume concentration in the exhaust gas after being processed by the oil fume purifier; the processor is used to judge the oil fume signal measured by the smoke oil sensor, and control the voltage control device to work; the voltage control device is fixed in the oil fume purification On the casing of the device and connected with the oil collecting tank, it is used to control the electric field voltage in the oil collecting tank.

Preferably, the control system includes a plurality of oil fume sensors, wherein the oil fume sensors are arranged at equal intervals on a side wall of the oil fume air outlet adjacent to the filter plate.

Preferably, the filter screen is a metal aluminum screen, which is detachably connected with the casing of the oil fume purifier.

Preferably, the polarizing device is set in the shape of a fence, which is composed of a plurality of independent polarized areas, wherein each independent polarized area includes two anode plates and a plurality of cathode wires, and the plurality of cathode wires Set between two anode plates.

Preferably, the filter plate is an activated carbon filter plate, which is detachably connected with the casing of the oil fume purifier.

Alternatively, a magnetic field-assisted electrostatic oil fume purifier includes a casing and a fume air inlet, a filter screen, a polarizing device, an oil collection tank, a filter plate, an exhaust fan, and an oil fume outlet that are accommodated in the casing and arranged in sequence. , wherein the filter screen corresponds to cover the polarization device, and the filter plate corresponds to cover the oil collection tank; the oil fume purifier adds an auxiliary magnetic field in the oil collection tank, wherein the direction of the magnetic field and the direction of the electric field in the oil collection tank are perpendicular to each other, for Strengthen the adsorption capacity of the oil collection tank.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The magnetic field assisted electrostatic oil fume purifier provided by the present invention is provided with a plurality of magnet plates perpendicular to the electric field in the oil collecting tank for absorbing oil fume, so that when the oil fume purifier is working, the oil collecting tank has mutually perpendicular The combined field composed of the electric field and the magnetic field is used as the adsorption source, which enhances the adsorption capacity of the oil collection tank, thereby improving the work efficiency of the oil fume purifier to remove oil fume. At the same time, each magnet plate is made up of a plurality of small magnetic blocks arranged alternately, which increases the magnetic field strength in the oil collection tank and further improves the working efficiency of the oil fume purifier for removing oil fume.

Description of drawings

Fig. 1 is a schematic structural diagram of a magnetic field-assisted electrostatic oil fume purifier provided by the present invention.

Fig. 2 is a schematic structural diagram of the polarizing device in the magnetic field-assisted electrostatic lampblack purifier provided by the present invention.

Fig. 3 is a schematic structural view of the oil collection tank in the magnetic field-assisted electrostatic oil fume purifier provided by the present invention.

Fig. 4 is a schematic diagram of the force of the charged oil particles in the oil collection tank according to the present invention.

Fig. 5 is a flow chart of the control system in the magnetic field-assisted electrostatic oil fume purifier provided by the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

Referring to Fig. 1, the magnetic field assisted electrostatic lampblack purifier 100 provided by the preferred embodiment of the present invention includes a casing 10 and a fume air inlet 20, a filter screen 30, a polarization Device 40 , oil collecting tank 50 , filter plate 60 , exhaust fan 70 , oil fume air outlet 80 .

The filter 30 covers the polarizing device 40 correspondingly. The filter 30 in this embodiment is a metal aluminum mesh, which is used in the oil fume purifier 100 to filter out the oil fume absorbed by the oil fume purifier 100 during operation. Large particles of dust and oil fume inside. It can be understood that when the oil fume purifier 100 is in operation, the large particles of dust and oil fume filtered by the filter screen 30 will be adsorbed on the filter screen 30. Therefore, the filter screen 30 of this embodiment is detachably arranged on the machine. Case 10 for easy cleaning.

The polarizing device 40 is used to charge the oil particles passing through the polarizing device 40 . The polarizing device 40 of the present embodiment has a fence-like structure and is composed of a plurality of independent polarized regions, wherein each independent polarized region includes an anode plate 41 arranged on the upper and lower sides and a plurality of cathodes located in the middle. wire42. It can be understood that the polarizing device 40 will produce a phenomenon of tip discharge under the action of high voltage, and the air will be ionized at this time. When the oil particles pass through the polarizing device 40, negative ions will be adsorbed on the oil particles to charge them, that is, the oil particles will be polarized.

The oil collecting tank 50 is used to collect the oil particles passing through the polarizing device 40. It can be seen from the above that the oil particles passing through the polarizing device 40 will be charged. It can be understood that the oil fume purifier 100 that is powered on will generate an electric field in the oil collecting tank 50 In this way, the charged oil particles moving in the oil collecting tank 50 will produce the effect of electric field force to prevent the oil particles from flying out of the oil collecting tank 50, that is, the oil collecting tank 50 can collect the oil particles. Specifically, an anode plate 53 and a cathode plate 54 are arranged at intervals in the oil collecting tank 50, wherein the anode plate 53 in the oil collecting tank 50 and the anode plate 41 in the polarizing device 40 may be the same or different. In this embodiment, the same anode plate (41, 53) is preferably selected. In order to further improve the adsorption capacity of the oil collection tank 50 to oil particles, that is, to improve the work efficiency of the oil fume purifier 100 for removing oil fume, an auxiliary magnetic field is added in the oil collection tank 50 of this embodiment, wherein the direction of the magnetic field in the oil collection tank 50 is perpendicular to the direction of the electric field. In this way, the movement of the charged oil particles in the oil collecting tank 30 will be affected by the electric field force and the Lorentz force. The direction of the Lorentz force will change with the moving direction of the charged oil particles, but the Lorentz force is always the resistance of the charged oil particles flying out of the oil collecting tank 50 .

Specifically, the oil collecting tank 50 is provided with a plurality of magnet plates 51, wherein each magnet plate 51 is formed by a plurality of small magnetic blocks 52 alternately arranged to form alternately distributed auxiliary magnetic fields. In the oil collecting tank 50 of this embodiment, four magnet plates 51 at equal intervals are preferentially arranged. It can be understood that the selection of the magnet plate 51 with the above structure ensures the magnetic field strength per unit distance, thereby ensuring the Lorentz force received by the charged oil particles moving in the oil collection tank 50, that is, improving the resistance of the oil collection tank 50 when it is working. The adsorption efficiency of oil particles.

The filter plate 60 is an activated carbon filter plate, which is arranged in the oil fume purifier 100 to remove various odors in the oil fume, so as to achieve the purpose of the oil fume purifier 100 to truly purify the oil fume. It can be understood that the present embodiment The filter plate 60 is also detachably connected to the casing 10 of the oil fume purifier 100 to facilitate cleaning or replacement of the filter plate 60 .

In order to enable the oil fume purifier 100 to automatically adjust its adsorption capacity according to the concentration of oil fume in the working environment when it is working, so as to achieve the goal of purifying oil fume with high efficiency and low energy consumption. The oil fume purifier 100 of this embodiment further includes a control system, and the control system includes an oil fume sensor 91 , a processor 92 and a voltage control device 93 . The oil fume sensor 91 is arranged at the oil fume outlet 80 of the oil fume purifier 100 for monitoring the concentration of oil fume in the exhaust gas after being treated by the oil fume purifier 100 . Further, the control system includes a plurality of oil fume sensors 91, wherein the oil fume sensors 91 are arranged at equal intervals on the side wall of the oil fume air outlet 80 adjacent to the filter plate 60, so as to ensure accurate measurement of the oil fume concentration value. The processor 92, as the control center of the control system, can accept the feedback signal from the oil fume sensor 91, and judge the efficiency of oil fume purification at this time by receiving different electrical signals, so as to control the voltage control device 93, and through the voltage control device 93 to change the electric field voltage, thereby changing the adsorption capacity of the oil fume purifier 100. The voltage control device 93 is fixed on the casing 10 of the oil fume purifier 100 and connected with the oil collecting tank 50 for controlling the electric field voltage in the oil collecting tank 50 .

It can be understood that when the magnetic field-assisted electrostatic oil fume purifier of the present invention is working, the polarizing device 40 and the magnetic field-assisted oil collection tank 50 are energized, and the voltage at this time is the initial voltage. The oil fume is sucked into the oil fume air inlet 20 by the rotation of the exhaust fan 70 , and the oil fume will pass through the filter screen 30 at this time, and the large particles in the oil fume will be adsorbed on the filter screen 30 . The remaining oil fume enters the polarizing device 40. The polarized area is composed of two upper and lower anode plates 41 and a plurality of cathode wires 42 in the middle. Under the action of high voltage, a tip discharge phenomenon occurs, and the air is ionized at this time. When the oil particles pass through the polarizing device 40, negative ions will be adsorbed on the oil particles to charge them, that is, the oil particles will be polarized. The polarized oil particles enter the oil collection tank 50 and are adsorbed in the oil collection tank 50 under the joint action of the electric field force and the Lorentz force. The purified oil fume will pass through the filter plate 60, which is used to remove the peculiar smell of the oil fume and is also the last filter layer. At this time, the oil fume sensor 91 installed at the air outlet will detect the concentration of oil fume in the purified gas, and convert the information into an electrical signal and send it to the processor 92 for data processing; Electric signal judgment judges the purification efficiency of the oil fume purifier 100 at this time, the electric field voltage can be adjusted through the voltage control device 93, and then the adsorption capacity of the oil fume purifier can be controlled, if the feedback data shows that the detected oil fume concentration is greater than the standard emission value , the voltage control device 93 increases the voltage, and vice versa, it decreases. Through continuous adjustment, the purpose of purification with high efficiency and low energy consumption is finally achieved.

To sum up, the magnetic field-assisted electrostatic lampblack purifier of the present invention has the effect of high efficiency and energy saving on the lampblack through reasonable structural configuration.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the invention. within the range.

Claims (7)

1. a kind of magnetic field auxiliary electrostatic formula oil fume purifier, including casing and the oil smoke air intake that is placed in the casing and sets gradually Mouth, screen pack, polarization device, oil sump tank, filter, extraction fan, oil smoke air outlet, wherein the screen pack correspondingly covers pole Makeup is put, and the filter correspondingly covers oil sump tank；It is characterized in that：Positive plate and negative electrode are arranged at intervals with the oil sump tank Plate, be provided with polylith magnet plates in the oil sump tank, the polylith magnetic sheet body is equally spaced, wherein every piece of magnet plates by The small magnetic patch of polylith, which is alternately arranged, to be formed, and the magnetic direction in the oil sump tank is mutually perpendicular to direction of an electric field, described for strengthening The adsorption capacity of oil sump tank.

2. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 1, it is characterised in that：Between being waited in the oil sump tank Four pieces of magnet plates are placed with away from ground.

3. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 1, it is characterised in that：The oil fume purifier enters one Step includes a control system, and the control system includes oil smoke sensor, processor and voltage-operated device；The oil smoke passes Sensor is arranged in the oil fume purifier at oil smoke air outlet, and gas is discharged after being treated for monitoring via the oil fume purifier Internal oil smoke concentration；The processor, for judging as the oil smoke signal measured by tobacco tar sensor, and control voltage controls Device is operated；The voltage-operated device is fixed on the casing of the oil fume purifier, and is connected with the oil sump tank, For controlling the voltage of electric field in the oil sump tank.

4. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 3, it is characterised in that：The control system includes Multiple oil smoke sensors, wherein the oil smoke sensor is equally spacedly arranged in the oil smoke air outlet adjacent to the one of the filter In side wall.

5. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 1, it is characterised in that：The screen pack is metal Aluminium net, it is detachably connected between casing with the oil fume purifier.

6. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 1, it is characterised in that：The polarization device is set to Paliform, it is by multiple independent polarization district's groups into wherein each independent polarization area includes two panels positive plate and a plurality of negative electrode Silk, described a plurality of cathode filament are arranged between two panels positive plate.

7. auxiliary electrostatic formula oil fume purifier in magnetic field according to claim 1, it is characterised in that：The filter is activity Charcoal filter, it is detachably connected between casing with the oil fume purifier.