CN203916390U - Air purification equipment and air purification device comprising the air purification equipment - Google Patents

Abstract

The utility model discloses an air purification device and an air purification apparatus, including a dust collecting plate, a voltage supply device, a conductive material component arranged on the surface of the dust collecting plate, and an air driving device; the surface of the dust collecting plate is provided with a protrusion array that interferes with the airflow flowing through the surface to generate local turbulence, each group of conductive material components includes two conductive material layers, at least one dust collecting plate is included between the two conductive material layers, and an air gap is provided between the conductive material layer and the dust collecting plate; the voltage supply device applies a high potential and a low potential to the two conductive material layers of each group of conductive material components respectively, so that the dust collecting plate adsorbs charged particles of the airflow flowing through its surface. The utility model interferes with the airflow flowing through it through the protrusion array to generate local turbulence, so that particles with higher specific resistance such as silicate collide violently or collide with the protrusion array, and are layered with the pressure of the airflow and retained on the surface of the protrusion array, thereby reducing the passing rate of such particles.

Description

Air purification equipment and air purification device comprising the air purification equipment

technical field

The utility model relates to air purification equipment and an air purification device comprising the air purification equipment.

Background technique

Existing air cleaners have achieved electrostatic dust removal. For example, the patent No. ZL00806175.0, the utility model titled air purification equipment, uses plastic array channels, conductive materials arranged on the surface of the array channels, high and low potential output devices interlaced with conductive materials, and devices that provide wind flow. The air purification equipment can effectively reduce the charging particles and neutral particles passing through the plastic array channel. In this air purification equipment, the particles in the airflow are charged by a corona discharge device or a radiation ionization device to achieve the purpose of adsorbing charged particles, but for particles with high specific resistance, such as silicate particles, they cannot be charged, which also leads to It cannot be adsorbed. In addition, due to the small contact surface area, the adsorption efficiency of charged particles is not high, that is, the single filtration efficiency is not high.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, increase the probability of particles colliding with each other when passing through the dust collection channel by adding a device that generates turbulence in the dust collection channel, and also increase the adsorption surface area in the dust collection channel, On the surface of the increased device, the boundary layer of the fluid and the pressure difference in the fluid are used to form a stagnation area to strengthen the deposition and filtration of large particles, thereby improving the single filtration efficiency.

In order to achieve the above purpose, the following technical solutions are adopted:

An air purification device, including more than one dust collection plate for collecting dust particles in the air, a voltage supply device for providing high voltage and low voltage, one or more groups of conductive material parts arranged on the surface of the dust collection plate, and driving air from the collection plate An air drive device passing through the surface of the dust plate; the surface of the dust collecting plate is provided with an array of protrusions that interfere with the air flow passing through the surface to generate local turbulence, and each set of conductive material components includes two layers of conductive material, the At least one dust collecting plate is included between the two conductive material layers, and an air gap is set between the conductive material layer and the dust collecting plate; the voltage supply device applies high Potential and low potential, so that the dust collection plate between the two layers of conductive material absorbs the charged particles of the airflow flowing over its surface.

Further, the dust collecting plate is a dust collecting plate containing electret material.

Further, a dust collection plate is included between the two conductive material layers of each set of conductive material components, and a dust collection plate is provided between each set of conductive material components.

Further, at least two dust collecting plates are arranged between each group of conductive material parts.

Further, the air gap height is 0.02mm-20mm.

Further, a support is provided between the conductive material layer and the dust collecting plate, and the conductive material layer is provided on the surface of the support opposite to the surface of the dust collecting plate.

Further, the surface of the dust collecting plate has a concave-convex structure.

Further, the protrusion array includes at least two groups of protrusion units, the protrusion units are sequentially arranged in parallel along the air flow direction, and the protrusions in the adjacent protrusion units are arranged in a staggered distribution.

Further, the shape of the protrusion is a cuboid, a hemisphere or a cylinder.

Further, the projection of the protrusion on the plane of the dust collecting plate is in the shape of a notch, and the airflow flows through the notch of the protrusion.

Further, the projection outline of the protrusion on the plane of the dust collecting plate includes acute angle, right angle, obtuse angle, semicircle, arc or wave shape.

Further, the dust collecting board is a dust collecting board made of polypropylene, polyethylene, polyvinyl chloride, polycarbonate, polytetrafluoroethylene, polytetrafluoroethylene, fiber bundle or ABS material.

An air purification device includes the above-mentioned air purification equipment, and the air purification device includes an air purifier, an air conditioner or a fresh air system.

Compared with the prior art, the utility model has the beneficial effects of:

1. The array of protrusions on the side of the dust collection plate can seriously disturb the airflow passing through the surface of the array of protrusions, resulting in disordered airflow path, increasing the chance of collision between particles and protrusions, thus increasing the number of particles The probability of being trapped under the electric field; when there is an air gap between the conductive material layer and the dust collection plate, after spatial polarization, the surface of the electret can capture a large amount of induced charges, while internal dipoles appear inside polarization phenomenon.

2. The micro-concave-convex structure on the surface of the dust collecting plate can greatly increase the surface area for absorbing dust, and more dust can be absorbed through the concave-convex structure, and the adsorption capacity of the dust collecting plate is improved.

3. The overall dust collection area is greatly increased by forming a dust collection plate array with multiple stacked dust collection plates. The conductive material layer used as an electrode can be set every other dust collection plate, or it can be set at intervals of several dust collection plates One piece, due to the existence of electret, there is no particularly large loss of efficiency between the installation of one dust collecting plate and the setting of multiple dust collecting plates.

4. The projection of the projection on the plane of the dust collecting plate is in the shape of a notch, and the part of the notch forms a stagnation area for the passing airflow to improve the adsorption probability of the charged particles in the airflow passing through this area.

Description of drawings

Fig. 1 is the structural representation of existing dust collecting plate;

Fig. 2 is the structural representation of air purification equipment shown in the utility model;

Fig. 3 is a schematic diagram of airflow flowing into a dust collecting plate with an array of protrusions;

Fig. 4 is the structural representation of the air purification equipment of embodiment one;

Fig. 5 is the structural representation of the dust collecting plate and the conductive material layer of the third embodiment;

Fig. 6 is an enlarged schematic diagram of area A of Fig. 4 and Fig. 5;

Fig. 7 is another structural schematic view of the dust collecting plate and the conductive material layer of the third embodiment;

Figure 8(a) and Figure 8(b) are schematic diagrams of the structure of a protrusion array in Embodiment 5;

Fig. 9(a) and Fig. 9(b) are schematic diagrams of another protrusion array structure in the fifth embodiment.

Illustration: 1—dust collecting plate; 11—protrusion array; 2—voltage supply device; 3—conductive material component; 4—air driving device; 5—air gap; 6—dipole; 7—surface charge.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The schematic implementation and description of the utility model are used to explain the utility model, but not as a limitation to the utility model.

As shown in FIG. 2 , the air purification equipment of the present invention includes a dust collecting plate 1 , a voltage supply device 2 , a conductive material part 3 and an air driving device 4 .

The number of the dust collecting board 1 includes more than one, which is used to collect air dust particles. The number of dust collection plates is determined according to the actual application. Different applications require different volumes, and the dust collection area can be increased by stacking the dust collection plates. Due to the limitation of the current process, the average thickness of the dust collection plate is about 1mm. The dust-collecting plate of the present utility model can also adopt the mode of blister production to make a thinner dust-collecting plate with a thickness of about 0.2mm. One or both sides of the dust collecting plate 1 are provided with an array of protrusions 11 that interfere with the airflow passing through its side to generate local turbulent flow. The protrusion array 11 has a certain shape and arrangement order. The dust-collecting plate of the utility model can be produced by blistering or rolling the plastic sheet, and the array of protrusions can be formed by implanting upright fiber columns through other processes.

The conductive material part 3 has one or more groups, which are arranged on the surface of the dust collecting plate 1, and an air gap 5 is provided between the conductive material layer 3 and the dust collecting plate 1, that is, the gap between the conductive material layer 3 and the dust collecting plate 1 without contact. Wherein, each group of conductive material parts 3 includes two conductive material layers, and at least one dust collecting plate 1 is included between the two conductive material layers. When the dust collecting plates are stacked, multiple groups of conductive material components are arranged in the stacked dust collecting plate array. The polarities of adjacent conductive material layers of two adjacent groups of conductive material components are opposite. In the entire array of dust collecting plates, a structural arrangement in which the polarities of adjacent conductive material layers are opposite is formed. That is, the voltage supply device alternately applies high voltage and low voltage to all conductive material layers.

The voltage supply device 2 is used to provide high voltage and low voltage. The voltage supply device 2 applies a high potential and a low potential to the two conductive material layers of each group of conductive material parts, so that the dust collecting plate between the two conductive material layers absorbs the charge of the airflow flowing through its protrusion array 11. particulates. When using the principle of electrostatic dust removal to adsorb particulate matter in the air, particulate matter with high specific resistance such as silicate is difficult to be polarized or charged, so it is not easy to be captured. As shown in FIG. 3 , in the present invention, a staggered array of protrusions is arranged on the dust collecting plate to interfere with the airflow flowing through the array of protrusions to generate local turbulence. In the local turbulent flow, the particles with high equiresistance of silicate collide violently and are trapped on the boundary layer of the concave side of the protrusion under the action of fluid pressure difference and turbulence, thereby reducing the passing rate of such particles.

The air driving device 4 is used to drive air to pass through the surface of the dust collecting plate. Since the utility model needs to disturb the airflow through the array of protrusions to form local turbulent flow, the airflow needs to be driven by an air drive device to reach a certain wind speed to meet the conditions. Air driving device 4 can be blowing type, also can be suction type. The suction type is suitable for situations where the width of the dust collection plate is not too wide.

Embodiment one

This embodiment is further deepened on the structural basis of the above-mentioned air purification equipment. It is known that each set of conductive material parts comprises two layers of conductive material with a dust collecting plate between the two layers of conductive material. Preferably, a dust collecting plate is provided between each group of conductive material parts.

The layers of conductive material and the dust collecting plates 1 are alternately arranged. The polarity between two adjacent conductive material layers of a dust collecting plate is opposite. When the material of the dust collecting plate contains electret material, a semi-permanent electret electric field is formed inside under the action of an external electric field. When the voltage supply device 2 is turned on, a uniform electric field is formed between adjacent conductive material layers, and at the same time, the electric field polarizes the electret material, and the electric field adsorbs the charged particles in the air flow passing through it catch. Particles with higher equiresistance of silicate collide violently with the local turbulent flow formed by the staggered protrusion array 11 and stay on the surface of the protrusion array along with the pressure stratification of the air flow, thereby reducing the passing probability.

The material of the dust collection plate may contain electret material. The dust-collecting plate preferably comprises a dust-collecting plate of polypropylene, polyethylene, polyvinyl chloride, polycarbonate, polytetrafluoroethylene, polyvinylidene fluoride, fiber bundle or ABS material. The full name of ABS is acrylonitrile-butadiene-styrene copolymer, which is a terpolymer composed of acrylonitrile, butadiene and styrene. The English name is Acrylonitrile-butadiene-styenecolymer, referred to as ABS. Plastic materials do not cause short circuits between adjacent layers of conductive material. An electric field is formed between adjacent conductive material layers to adsorb charged particles flowing through the airflow. Although the surface charge of the dust collection plate cannot stay after the conductive material layer is de-energized, the existence of polarized dipole charges and space charges inside it does not affect its use as a basic electrostatic dust collection device.

Embodiment two

The difference between this embodiment and the first embodiment lies in that at least two dust collecting plates are arranged between each group of conductive material parts. The material of the dust collecting plate contains electret material, and a semi-permanent electret electric field is formed inside under the action of an external electric field. A plurality of dust-collecting plates 1 are stacked together to form a filter device, and the overall dust-collecting area is greatly increased through multiple sets of stacked arrays of dust-collecting plates. Due to the existence of the electret, there is no particularly large loss of efficiency if the dust collecting plates are arranged at intervals of one sheet or at intervals of multiple sheets. In the experiment, the difference in purification efficiency loss between three electrodes and one electrode at intervals is about 5%. This solution can reduce the cost of implementation by reducing the number of electrode devices.

Embodiment three

This embodiment is improved on the basis of Embodiment 1 or Embodiment 2. As shown in Figure 4, an air gap 5 is provided between the conductive material layer and the dust collecting plate in this embodiment, that is, there is no contact between the conductive material layer and the dust collecting plate. The air gap between the conductive material layer and the dust collecting plate is realized by the bracket 6 . The bracket 5 is arranged between the two dust-collecting plates 1, and the conductive material layer and the dust-collecting plates are overhead, so that an air gap 5 is formed between the two brackets and the dust-collecting plates. The support of Fig. 4 is " H " type, and two support legs support its two dust-collecting plates 1, and the upper and lower surfaces of the connection plate in the middle are respectively provided with a conductive material layer, and the two conductive material layers are conducted. Or just a layer of conductive material. Among them, the height of the air gap is preferably 0.02 mm to 20 mm. Because the air gap is insulated from the conductive material layer, the dust collecting plate will not be connected to the circuit loop or the ground. Therefore, when the electrode is powered off, the polarized electric field generated by the polarized dust collecting plate can still be maintained for a long time. As shown in FIG. 5 , the bracket 6 in this figure is used to support all dust collecting plates and conductive material layers. There is an air gap 5 between the dust collecting plate and the conductive material layer. The support structure of this embodiment is not limited to the support structures shown in FIG. 4 and FIG. 5 , and should also include all support structures that can form an air gap 5 between the dust collecting plate 1 and the conductive material layer 3 . As shown in FIG. 6 , the induced charge on the surface of the dust collecting plate 1 will not disappear quickly after the power is turned off, but the internal dipole polarization phenomenon shown in FIG. 6 appears inside the protrusion. The air gap 5 also increases the creepage distance between two adjacent electrodes, reducing the risk of electrode breakdown.

Embodiment four

As shown in FIG. 7 , this embodiment is improved on the basis of any one of Embodiments 1 to 3. In this embodiment, the two adjacent dust collecting plates are mirror symmetrical about the conductive material layer 3 between the two dust collecting plates 1 . An air gap 5 is provided between the dust collecting plate 1 and the conductive material layer 3 . Figure 7 omits components such as brackets. Similar to Embodiment 4, the dust collecting plate 1 is insulated from the conductive material layer 3 due to the air gap 5 and will not be connected to the circuit loop or the ground. Therefore, when the electrode is powered off, the dust collecting plate is polarized and generated The polarizing electric field can still be maintained for a long time.

Embodiment five

As shown in Fig. 8 (a) and Fig. 9 (a), the protrusion array 11 comprises at least two groups of protrusion units, and the protrusion units are arranged in parallel in sequence along the direction of air flow, and the protrusions in the adjacent protrusion units Staggered distribution settings. The shape of the protrusion is cuboid, hemisphere or cylinder.

In Fig. 8(a) there are three groups of protrusion units arranged in parallel. Each group of protrusion units contains several protrusions. The distance between the protrusions may be a fixed value or a non-fixed value. If Fig. 8(b) is the main view, then Fig. 8(a) is the bottom view. The protrusion in Fig. 8(a) is a strip structure, and the projection on the plane of the dust collecting plate is a strip structure with notches. The strip-like structures form acute, right or obtuse angled notch structures. Wherein, the direction of the notch is to the left, perpendicular to the airflow direction or forming an angle less than 180 degrees, and the airflow can flow through the notch of the protrusion.

If Fig. 9(a) is the front view, then Fig. 9(b) is the bottom view of Fig. 9(a). The projection of the protrusion on the plane of the dust collecting plate is an "S" shaped structure with a notch. The "S" structure has two notches, the two notches are in opposite directions, perpendicular to the airflow direction or forming an angle less than 180 degrees, and the airflow flows through the notches of the protrusion. The notch can form a stagnation area for the air flow passing through it to increase the probability of adsorption of charged particles in the air flow passing through this area. Particles with high equiresistance of silicate collide violently and are trapped on the boundary layer of the concave side of the protrusion under the action of pressure difference and turbulence of the fluid, thereby reducing the passing rate of such particles.

The projected outline of the protrusions on the plane of the dust collecting plate includes acute angles, right angles, obtuse angles, semicircles, arcs or waves.

Embodiment six

This embodiment includes the air cleaner of the air purification equipment described in any one of Embodiments 1 to 5, or includes the air conditioner of the air purification equipment described in any one of Embodiments 1 to 5, or includes any of Embodiments 1 to 5. The fresh air system of the air purification equipment described in an embodiment. All air purifiers, vehicle-mounted or household air conditioners, and fresh air systems using the air purification equipment described in the utility model all belong to the protection objects of the utility model. The application of the air purification equipment described in this embodiment includes but not limited to air purifiers, air conditioners or fresh air systems.

Except above-mentioned embodiment, following feature of the present utility model all can be added in above-mentioned all embodiment:

The surface of the dust collecting plate has a concave-convex structure. The dust collection plate of the present invention can be made by injection molding or compression molding. Due to the process limitation, the average thickness of the dust collection plate is about 1mm. The dust collection plate is formed by etching irregular tiny protrusions on the surface of the mold or using a precision automatic machine tool. The microstructure processed on the surface of the shaped cavity can effectively and greatly increase the specific surface area for absorbing dust. The dust collecting plate of the utility model can adopt the mode of blister production or rolling the plastic sheet, so that the dust collecting plate produced can be made thinner, about 0.2mm.

The technical solutions provided by the embodiments of the present invention have been introduced in detail above. In this paper, specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the present invention. The principle of the embodiment; at the same time, for those of ordinary skill in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and the scope of application. Utility model restrictions.

Claims (13)

1. an air cleaning facility, it is characterized in that: comprise more than one collecting plate for collecting koniology particle, the voltage generator of high pressure and low pressure is provided, one or more groups is located at the conductive material component on collecting plate surface, and the air driven device that drives air to pass through from collecting plate surface; The surface of described collecting plate is provided with disturbs its surperficial air-flow of flowing through to produce the thrust array of local turbulence, described every group of conductive material component comprises two conductive material layers, between described two conductive material layers, at least comprise a collecting plate, between described conductive material layer and collecting plate, be provided with air gap; Described voltage generator applies high potential and electronegative potential to two conductive material layers of every group of conductive material component respectively, the electrically charged particle thing of its surperficial air-flow so that the collecting plate absorption between two conductive material layers is flowed through.

2. air cleaning facility according to claim 1, is characterized in that: described collecting plate is the collecting plate that contains electret.

3. air cleaning facility according to claim 1 and 2, is characterized in that: between two conductive material layers of described every group of conductive material component, comprise a collecting plate, be provided with a collecting plate between described every group of conductive material component.

4. air cleaning facility according to claim 1 and 2, is characterized in that: between described every group of conductive material component, be provided with at least two collecting plates.

5. air cleaning facility according to claim 1, is characterized in that: described air gap height is 0.02mm～20mm.

6. air cleaning facility according to claim 1 or 5, is characterized in that: between described conductive material layer and collecting plate, be provided with support, described conductive material layer is located at the rack surface relative with collecting plate surface.

7. air cleaning facility according to claim 1, is characterized in that: the surface of described collecting plate is concaveconvex structure.

8. air cleaning facility according to claim 1, it is characterized in that: described thrust array comprises at least two group thrust unit, described thrust unit be arranged in parallel successively along air flow direction direction, the setting that is interspersed of the thrust in described adjacent thrust unit.

9. air cleaning facility according to claim 8, is characterized in that: described thrust be shaped as cuboid or hemisphere or cylinder.

10. air cleaning facility according to claim 8, is characterized in that: described thrust is projected as the jagged shape of tool collecting plate plane, the recess of thrust described in airflow passes.

11. air cleaning facilities according to claim 10, is characterized in that: described thrust comprises acute angle, right angle, obtuse angle, semicircle, circular arc or waveform at the contour projection of collecting plate plane.

12. air cleaning facilities according to claim 1, is characterized in that: described collecting plate is the collecting plate that contains polypropylene, polyethylene, polyvinyl chloride, Merlon, polytetrafluoroethylene (PTFE), poly-inclined to one side tetrafluoroethene, fibre bundle or ABS material.

13. 1 kinds of air cleaning units, is characterized in that: comprise air cleaning facility described in the arbitrary claim of claim 1-12, described air cleaning unit comprises air purifier, air-conditioning or VMC.