CN108607688A - A kind of fresh air purification device in electrode - Google Patents

Abstract

The invention relates to a fresh air purification device with a standing electrode, which comprises a box body, a fresh air outlet arranged on the box body, a return air outlet, an air supply outlet, and a fan, a transformer and a high-voltage module arranged in the box body. Filter module, needle point discharge module and static electrode dust collection module. After the return air and fresh air to be treated are mixed through the return air port and the fresh air port respectively, they are firstly filtered through the primary effect filter module, and then the needle point discharge module is used to improve the air to be treated. The proportion of medium-charged particles and the charge amount of a single particle enter the electrified dust collection module to capture air particles, and finally send them out through the air outlet through the fan. The invention aims at the problem that the efficiency of the static electrode dust collection module is greatly attenuated with the dust storage, and improves it by adding a needle point discharge module at the front end to improve the dust collection efficiency and slow down the attenuation of the primary filtration efficiency of the static electrode dust collection device with the dust storage.

Description

An electrified fresh air purification device

technical field

The invention belongs to the technical field of air cleaning, and in particular relates to an electrified fresh air purification device.

Background technique

In recent years, people pay more and more attention to indoor air quality, and gradually use fresh air blowers or air purifiers to introduce purified air into the room. The traditional fresh air purification device is mainly composed of fan, air inlet, exhaust outlet and various pipes and joints. The fan installed in the ceiling is connected to multiple exhaust outlets through the indoor exhaust duct. After the fan is started, the indoor polluted air is discharged to the outside through the fan, exhaust duct and exhaust outlet in turn, so that the indoor will form a negative pressure. In this way, fresh outdoor air enters the room through the air inlet installed above the window frame or between the window frame and the wall to purify the indoor air, so that the indoor personnel can breathe the fresh air outside and adjust the indoor environment.

Nowadays, the application of fresh air fans is becoming more and more extensive. In order to deal with the increasingly serious outdoor smog and outdoor pollution problems, filter modules are added to the fresh air fans. However, most of the existing electrostatic dust collection filters are of single-zone structure, and there is a The module efficiency is greatly attenuated with the dust holding problem, and the air filter of the electrified electrode has high resistance and low dust collection efficiency.

Contents of the invention

The object of the present invention is to provide an electrified fresh air purification device in order to solve the above problems.

The object of the present invention is achieved through the following technical solutions:

A static electrode fresh air purification device, comprising a box body, a fresh air outlet arranged on the box body, a return air outlet, an air supply outlet, and a fan, a transformer and a high-voltage module arranged in the box body, and the box body is also sequentially provided with a primary filter Module, needle point discharge module and static electrode dust collection module. After the return air and fresh air to be treated are mixed through the return air port and the fresh air port respectively, they are firstly filtered through the primary effect filter module, and then the needle point discharge module is used to increase the concentration of the air to be treated. The proportion of charged particles and the charge amount of a single particle enter the static electrode dust collection module to capture air particles, and finally send them out through the air outlet through the fan.

The invention aims at the problem that the efficiency of the static electrode dust collection module is greatly attenuated with the dust storage, and improves it by adding a needle point discharge module at the front end, so as to increase the proportion of charged particles and the charge amount of a single particle, thereby improving the dust collection efficiency. In this way, the attenuation of the primary filtration efficiency of the electrified dust collection device with the dust holding is slowed down.

Further, the needle point discharge module includes an aluminum orifice plate, and a plurality of round holes are arranged on the aluminum orifice plate, a bracket is installed in the round hole, a corona needle is placed on the conductive slot of the bracket, and the The corona needle is fixed on the conductive strip, the aluminum orifice plate is grounded, and the conductive strip is connected to the high voltage module to be applied with negative high voltage.

Further, the negative high voltage is -10 to -13kV.

Further, the array of circular holes is arranged on an aluminum orifice plate with a radius of 15-25mm.

Further, the static electrode dust collection module is composed of a plurality of dust collection plates, and the dust collection plates are integrally packaged in a plastic outer frame, and the dust collection plates are connected and supported by plastic materials and divided into many similar rectangles. The microporous channel, the dust-collecting plate is connected to a high-voltage power supply, and a strong electric field is formed in the micro-porous channel between adjacent dust-collecting plates.

Further, the dust-collecting plate is composed of a polypropylene film and a carbon fiber conductive film, the carbon fiber conductive film is completely wrapped between two layers of polypropylene films, and the carbon fiber conductive film is connected to an external electrode.

Further, the thickness of the upper and lower layers of the polypropylene film is 0.3-0.6mm, and the surface is provided with protruding asymmetric fins, and the carbon fiber conductive film is made of metal oxide, carbon, polymer conductive material and bonding material production.

Further, the high-voltage power supply connected to the dust-collecting plate is at a voltage of -10kV to -12kV, and the size of the micropore channel is 5×2mm.

Further, plastic reinforcing ribs are placed horizontally in the middle of the plastic outer frame, and the plastic outer frame is connected to the high-voltage module, and the high-voltage module is connected to the input 220V alternating current through a DC-AC power converter.

Further, the inlet of the air return port is provided with a return air baffle and a chute to control the return air volume.

Further, the primary-effect filter module is composed of a primary-effect filter screen.

The specific working principle of the present invention is that the fresh air is introduced into the fresh air box through the cylindrical pipe, and mixed with the indoor return air passing through the hole of the air intake cover to form a mixed air, and the mixed air passes through the primary filter, the needle point discharge module, and the static electrode dust collection module in sequence The clean air flow is sent into the room through the fan, and the static electrode dust collection module is connected to the carbon fiber conductive film through the electrodes arranged alternately with positive and negative electrodes, and forms a very strong electric field within a very small distance in the microporous channel to achieve the attraction of particles Collection function, the needle point discharge module is composed of a corona needle and an aluminum orifice plate, the corona needle is placed on the conductive slot of the bracket, and fixed on the conductive strip, connected to the DC high voltage module and applied with a negative high voltage of about -12kV ;The aluminum orifice plate is grounded. Due to the ionization of the gas, the particles in the dusty air flow pass through the round hole and are charged with a certain amount of charge. They enter the dust collection module and are captured in a strong field, so as to achieve the purpose of filtering the particles in the fresh air. .

Compared with the prior art, the stationary electrode purification equipment is an air purification equipment with a built-in fan and a needle point discharge module, and belongs to an electrostatic dust collection filter with a dual-zone structure. Electret purification equipment uses electret as the filter material. Electret is a dielectric material that can store space charge for a long time. If the charging performance does not change much during its life cycle, it can be regarded as a permanent electric body. , In order to stabilize the electric field of the electret, ensure the stability and reliability of the filtration efficiency, and ensure the service life of the material, the electret material is improved into an electret modified material. Compared with the electrostatic dust collection filter with a single-zone structure, the static electrode air filter adopts a dual-zone structure to divide the ionization and collection of particles into two stages, which effectively solves the surface charge of the dust layer in the dust collection process that exists in the single-zone structure. The anti-corona effect generated by accumulation, compared with the traditional electrostatic dust collection filter, the electrified air filter has the characteristics of small resistance, high dust collection efficiency, repeated cleaning, and almost no ozone.

Description of drawings

Fig. 1-stereoscopic structural representation of the present invention;

Figure 2 - a schematic top plan view of the present invention;

Figure 3 - Schematic diagram of the internal structure of the electrified dust collection module;

Figure 4 - Working principle diagram of the electrified dust collection module;

Figure 5 - Schematic diagram of the needle tip discharge module;

Among them, 1-air supply port; 2-electrode dust collection module; 3-needle tip discharge module; 4-primary filter module; 5-return air port; 6-fresh air port; 7-fan; 8-transformer; 9-high voltage module ; 10-electrode; 11-conductive film; 12-polypropylene film.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

Referring to Fig. 1 and Fig. 2, the present invention mainly includes an air supply port 1, a static electrode dust collection module 2, a needle point discharge module 3, a primary filter module 4, a return air port 5, a fresh air port 6, a fan 7, a transformer 8, and a high voltage module 9 . After the return air and fresh air to be treated are mixed according to a certain ratio through the return air outlet 5 and the fresh air outlet 6, firstly, the mixed air is firstly filtered through the primary filter module 4, and then passed through the needle tip discharge module 3 to improve the air to be treated. The proportion of charged particles in the air and the charge amount of a single particle can improve the dust collection efficiency, so as to slow down the attenuation of the primary filtration efficiency of the static electrode dust collection device with the dust, and then enter the dust collection module of the static electrode to capture the air particles. Finally, the treated air is sent out through the air outlet 1 via the fan 7 .

For the problem that the efficiency of the static electrode dust collection module 2 is greatly attenuated with the dust storage, it is improved by adding a needle point discharge module 3 at the front end, so as to increase the proportion of charged particles and the charge amount of a single particle, thereby improving the dust collection efficiency. As shown in Figure 5, the needle point discharge module 3 is composed of a corona needle and an aluminum orifice plate. The corona needle is placed on the conductive slot of the bracket and fixed on the conductive strip. It is connected to the DC high voltage module and is applied with a voltage of about -12kV. Negative high voltage; the aluminum orifice plate is grounded, and the radius of a single hole is 20mm. Due to gas ionization, the particles in the dust-laden airflow pass through the round hole with a certain amount of charge and enter the dust collection module 2 and are captured in a strong field. set. Before and during the dust-holding experiment, if the power supply module is not turned on, the attraction of charged particles to charged particles by the residual charge on the surface of the dust-collecting plate polymer is not enough to improve the reliable dust-collecting effect, and the measured Filtration efficiency is very unsatisfactory.

The high-voltage power supply of the new static electrode dust collection module 2 is connected to the carbon fiber conductive film through wires, and the negative power transmission system is adopted, and the positive electrode is grounded so as to form a very strong electric field in the extremely small distance between the microporous channels. The use of negative power transmission can effectively reduce Electrochemical phenomena occur, avoiding the corrosion of wires and other reactions, and reducing the influence of many external factors on it. The film is wrapped with a dielectric material with extremely low conductivity to form a closed space, so the electrodes are not exposed to the air, and the particles cannot directly contact the electrode plates, preventing the sparking phenomenon between the electrodes due to high voltage, and slowing down the resistance value caused by the aging and fracture of the electrodes change, and prevent water from contacting the electrodes during cleaning.

Particles are collected on the stacked and staggered dust collection plates. This module collects dust particles by attracting them, which is equivalent to the function of a filter. Each dust-collecting plate is composed of three layers: polypropylene (PP) film 12-carbon fiber conductive film 11-polypropylene film 12, each plate is also connected and supported by polypropylene (PP) material and separated Many rectangular (5 x 2 mm ² ) microwell channels. The polypropylene film 12 is 550 mm long and 50 mm wide, and the upper and lower layers are superimposed with a thickness of 0.5 mm. The protruding asymmetric fins on the surface increase the specific surface area of the wall, which is beneficial to the collection of particles. A carbon fiber conductive film 11 is arranged between two layers of polypropylene films 12 by printing film.

As shown in Figures 3 and 4, the conductive film 11 (510×30mm ² ) is made of carbon fiber composite material using metal oxide, carbon, polymer conductive material and bonding material. Each dust-collecting plate is embedded in the -10kV high-voltage or grounded electrodes on both sides to generate a potential difference between two adjacent plates. The conductive film 11 is a closed structure completely wrapped between the electrode 10 and the polypropylene film 12. It is fully protected due to the insulation of the PP material, preventing the sparking phenomenon between the electrodes due to high voltage, and slowing down the resistance caused by the aging and fracture of the electrodes. value change and prevents water from coming into contact with the electrode during cleaning. The dust collection plate is packaged in a plastic outer frame as a whole, the outer frame size is 552×505×55mm, the edge thickness is 15mm, and the plastic reinforcement rib with a width of 5mm is horizontally placed in the middle, so the effective filtration area of the dust collection plate area is 520×470mm ² . The two protruding contact contacts on the top of the plastic frame are connected to the high voltage generating module 9, and the high voltage module 9 is connected to the input 220V alternating current through a DC/AC power converter.

The whole device is designed with three levels of air volume, the total air volume is 60, 150, 240m ³ /h respectively, which can be controlled by controlling the air volume of the return air outlet. The fresh air mode is only suitable for situations where the outdoor air pollution is not serious, and the indoor particulate matter can be removed faster by increasing the return air volume gear.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the applicant has described the present invention in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technology of the present invention Any modification or equivalent replacement of the technical solution without departing from the spirit and scope of the technical solution shall be covered by the scope of the claims of the present invention.

Claims (10)

1. a kind of fresh air purification device in electrode, including babinet, the fresh wind port on babinet, return air inlet, air outlet and set In wind turbine, transformer and high-pressure modular in babinet,

It is characterized in that, primarily efficient filter module, needle point discharge module and dust collection module in electrode are also equipped in the babinet successively, After pending return air and fresh air is mixed by return air inlet and fresh wind port respectively, first passes through primarily efficient filter module and just imitated Filter, the carrying capacity of charged particle ratio and single particle in pending air is improved by needle point discharge module, is entered back into later Dust collection module in electrode captures air atom, is finally sent out by air outlet via wind turbine.

2. one kind fresh air purification device in electrode according to claim 1, which is characterized in that the needle point discharge module packet Aluminum orifice plate is included, multiple circular holes are set on the aluminum orifice plate, mounting bracket in the circular hole, on the non-conductive socket of the holder Corona pin, the corona pin is assigned to be fixed on conductive bar, aluminum hole plate earthing, the conductive bar is connected to the high pressure Module is applied in negative high-voltage.

3. one kind fresh air purification device in electrode according to claim 2, which is characterized in that the negative high-voltage is -10 To -13kV.

4. one kind fresh air purification device in electrode according to claim 2, which is characterized in that the array of circular apertures is arranged in On aluminum orifice plate, radius 15-25mm.

5. one kind fresh air purification device in electrode according to claim 1, which is characterized in that the dust collection module in electrode It is made of multiple collecting polar plates, the collecting polar plate overall package passes through plastic material in plastics outline border between collecting polar plate Connection supports and is partitioned into the micro channel of many similar rectangles, and collecting polar plate accesses high voltage power supply, between adjacent collecting polar plate Micro channel in formed highfield.

6. one kind fresh air purification device in electrode according to claim 5, which is characterized in that the collecting polar plate is by poly- third Alkene film and carbon fiber guiding conductive film composition, the carbon fiber guiding conductive film are completely encapsulated between two layers of polypropylene film, carbon Electrode outside the connection of fiber conductive film.

7. one kind fresh air purification device in electrode according to claim 6, which is characterized in that above and below the polypropylene film Two superimposed thickness is 0.3-0.6mm, and surface is equipped with asymmetric fin outstanding, and the carbon fiber guiding conductive film uses metal oxygen Compound, carbon, macromolecule conducting material and adhesives are made.

8. one kind fresh air purification device in electrode according to claim 5, which is characterized in that the collecting polar plate access High voltage power supply is the voltage of -10kV to -12kV, and the size of the micro channel is 5 × 2mm.

9. one kind fresh air purification device in electrode according to claim 5, which is characterized in that horizontal among the plastics outline border Plastics reinforcing rib is set, plastics outline border is connect with high-pressure modular, and high-pressure modular passes through DC communication power supply changeover device and input 220V exchange electrical connections.

10. one kind fresh air purification device in electrode according to claim 1, which is characterized in that the return air inlet inlet Equipped with the return air baffle and sliding slot for realizing control return air amount, the primarily efficient filter module is made of primary filter screen.