CN107774443B

CN107774443B - Electrostatic fume remover

Info

Publication number: CN107774443B
Application number: CN201610733802.2A
Authority: CN
Inventors: 王嘉华; 曹亚裙; 余丙松; 傅海峰; 李昂; 金旗; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2016-08-25
Filing date: 2016-08-25
Publication date: 2024-01-16
Anticipated expiration: 2036-08-25
Also published as: CN107774443A

Abstract

The utility model provides an electrostatic oil smoke removing device, includes first module and the second module of coaxial setting in proper order, its characterized in that: the first module comprises pole plates and leads which are oppositely spaced and alternately arranged, the second module comprises positive pole plates and negative pole plates which are oppositely spaced and alternately arranged, the positive pole plates and the negative pole plates are respectively connected to the positive pole and the negative pole of the static electricity generating device, the pole plates and the leads are respectively connected to the positive pole and the negative pole of the static electricity generating device, the positive pole plate, the negative pole plate and the pole plates extend along the axial direction of the first module and the second module, and the leads extend perpendicular to the axial direction of the first module and the second module. The electrostatic fume removal device has the advantages of good fume removal effect, small volume, compact structure, convenient disassembly and installation, capability of improving the electrostatic fume removal efficiency in a small space range, and capability of preventing short circuit caused by surface discharge and liquid drop attraction.

Description

Electrostatic fume remover

Technical Field

The invention relates to an electrostatic fume removal device.

Background

The oil separation degree of the existing better range hoods in the market can reach 90% or more, but part of oil smoke and a large amount of PM2.5 particles are discharged outdoors directly. As the outdoor air quality is increasingly worried, the outdoor activities and the physical health of human beings are seriously affected, and the lampblack is taken as one of main pollution sources of the outdoor air, so that the purification of the exhaust body outside the range hood is particularly important. In order to reduce the pollution of the oil smoke to indoor and outdoor environments and reduce the rejection of the public, especially the public around the area to catering enterprises, the oil smoke purifying device is needed to be adopted, and the common oil smoke purifying device in the prior art comprises: mechanical oil smoke purifier, water mist spray type oil smoke purifier and electrostatic oil smoke purifier. The electrostatic technology is applied to the range hood, so that a good fume purifying effect can be achieved.

The existing high-voltage electrostatic oil fume purifying device generally has two structures, namely a honeycomb type electric field generator and a flat plate type electric field generator. The cathode of the former is a hexagonal hole of regular hexagons integrally connected with each other, the shape is like a honeycomb, a long needle is arranged at the geometric center of each regular hexahedral hole, and the long needle is an anode. The positive electrode of the output end of the high-voltage power supply is connected with the anode of the electric field generator, and the negative electrode of the power supply is connected with the cathode of the electric field generator. Corona is generated near the needle point after the power is on, air is ionized, a large amount of charged positive ions and negative ions are generated, and an adsorption electric field is arranged at the rear part of the needle point. When the oil smoke particles enter the honeycomb electric field generator, the oil smoke particles are captured by positive and negative ions to become load oil smoke particles. Under the drive of wind force, the load particles are acted by the electric field force at the adsorption field and move towards the corresponding collector, so that the purposes of soot deposition and air purification are achieved. In the same regular hexahedral hole, the working voltage of the front end ionization field is greatly different from that of the rear adsorption field. It has the following disadvantages: the voltage is too high, and the spark discharge is performed on the rear electric field; the working voltage is reduced to meet the rear requirement, the corona at the front end is weak, a large amount of positive and negative ions cannot be generated, the fume purifying capability is reduced, and the production process is complex.

The invention discloses a range hood and a high-voltage electrostatic oil smoke separator thereof, which are disclosed in Chinese patent with 201420717912.6, and are flat-plate type electric field generators, and the range hood comprises an insulating shell, a plate type high-voltage ionization device and a plate type high-voltage electrostatic adsorption device, wherein the high-voltage electrostatic adsorption device comprises a plurality of cathode plates and anode plates which are alternately separated from each other, the cathode plates are sleeved together through bolts and are separated by metal spacers, and the anode plates are sleeved together through bolts and are separated by metal spacers. Such devices are generally large in size, and generally in order to obtain a good electrostatic fume removal effect, the total area of the cathode sheet and the anode sheet must be increased, so that the overall size cannot be made smaller.

An efficient electrostatic fume removal electrode assembly for fume and exhaust gas as disclosed in chinese patent CN203972134U is also a typical high voltage electrostatic cleaning device of honeycomb structure. Although the electrostatic dust or oil smoke particles have good charging capability, the structure has huge whole volume and is very troublesome to install and detach.

Disclosure of Invention

The invention aims to solve the technical problems that the electrostatic oil smoke removing device has good electrostatic oil smoke removing effect, small volume, compact structure and convenient disassembly and installation, and can improve the electrostatic oil smoke removing efficiency in a small space range.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an electrostatic oil smoke removing device, includes first module and the second module of coaxial setting in proper order, its characterized in that: the first module comprises a pole plate fixing frame, a wire fixing frame, pole plates fixed on the pole plate fixing frame, and wires fixed on the wire fixing frame and opposite to the pole plates at intervals, wherein the pole plates and the wires are alternately arranged at intervals, the pole plate fixing frame is arranged on the front side and the rear side of the wire fixing frame, the second module comprises positive plates and negative plates which are alternately arranged at intervals, the positive plates and the negative plates are respectively connected to the positive electrodes and the negative electrodes of the static electricity generating device, the pole plates and the wires are respectively connected to the positive electrodes and the negative electrodes of the static electricity generating device, the positive plates, the negative plates and the pole plates extend along the axial directions of the first module and the second module, and the wires extend vertically with the axial directions of the first module and the second module.

Preferably, the polar plate fixing frame comprises an annular bracket and clamping grooves which are arranged on the bracket at intervals, the clamping grooves are used for clamping and fixing the end parts of the polar plates, lugs protruding outwards are arranged at two opposite ends of the circumferential surface of the bracket, and the lugs are fixedly connected with the lead fixing frame.

For fixed wire, the wire mount includes annular perisporium, be equipped with along its circumference distribution's breach on the perisporium, the wire is fixed to be blocked in the breach.

Preferably, gaps which are distributed at intervals are respectively arranged at the front end and the rear end of the peripheral wall.

The outer peripheral surface of the peripheral wall is provided with two fixing convex strips which are symmetrically arranged along the circumferential direction of the peripheral wall, the fixing convex strips extend forwards and backwards along the axial direction of the annular peripheral wall and protrude out of the annular peripheral wall, and the lugs are fixedly connected with the fixing convex strips.

In order to separate the wire connection joint from the polar plate, the annular peripheral wall at one side of one of the fixing convex strips is provided with a wire connection joint for connecting wires and an external high-voltage static electricity generating device, and the annular peripheral walls at the front side and the rear side of the wire connection joint are provided with protruding baffle plates for separating the wire connection joint from the polar plate fixing frame.

Preferably, the second module comprises an annular shell and pole plate fixing frames fixed on the front side and the rear side of the shell, a first group of clamping blocks and a second group of clamping blocks which are circumferentially spaced are respectively arranged on the inner surfaces of the front side and the rear side of the shell, one group of the positive pole plate and the negative pole plate is fixed between the first group of clamping blocks and the pole plate fixing frames positioned on the rear side of the shell, and the other group of the positive pole plate and the negative pole plate is fixed between the second group of clamping blocks and the pole plate fixing frames positioned on the front side of the shell.

Preferably, the polar plate fixing frame at the front side of the second module and the polar plate fixing frame at the rear side of the first module are the same, clamping grooves are formed in the front side and the rear side of the polar plate fixing frame, and the clamping grooves in the front side and the rear side are staggered.

In order to prevent creepage, the positions between the adjacent clamping grooves on the same side of the polar plate fixing frame form a concave arc.

In order to prevent charge accumulation, the edges of the positive plate and the negative plate are in rounded transition.

In order to prevent charge accumulation, the edges of the polar plate fixing frame and the lead fixing frame are in round corner transition.

In order to guide oil drops from inside to outside and prevent the accumulation of the oil drops, the edge of the inner surface of the shell is provided with a chamfer, and the distance between the inner surface of the shell where the chamfer is positioned and the positive plate and the negative plate is 2mm-20mm.

Compared with the prior art, the electrostatic fume removal device has the advantages of good fume removal effect, small volume, compact structure and convenient disassembly and installation, can improve the electrostatic fume removal efficiency in a small space range, and can prevent short circuits caused by surface discharge and liquid drop attraction.

Drawings

Fig. 1 is a schematic diagram of an electrostatic oil smoke removing device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a first module of an electrostatic oil smoke removing device according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a second module of the electrostatic oil smoke removing device according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view taken along line A-A of fig. 1.

Fig. 5 is a sectional view taken along line B-B of fig. 1.

Fig. 6 is an enlarged schematic view of a portion C in fig. 5.

Fig. 7 is an exploded view of a first module of an electrostatic discharge cooking fume remover according to an embodiment of the present invention.

Fig. 8 is an exploded view of a second module of the electrostatic discharge cooking fume remover according to an embodiment of the present invention.

Description of the embodiments

The invention is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1-3, the electrostatic oil fume removing device according to the first embodiment of the present invention includes a first module 1 and a second module 2 that are sequentially arranged, where the first module 1 is an electrostatic oil fume removing module that generates an electric field by a polar plate and a conductive wire being opposite, and the second module 2 is an electrostatic oil fume removing module that generates an electric field by a positive polar plate and a negative polar plate being opposite. The first module 1 and the second module 2 are coaxially arranged, and the airflow direction is the axial direction of the first module 1 and the second module 2 of the electrostatic oil smoke removing device, the airflow enters from one end of the first module 1 and flows into the second module 2, and the other end of the second module 2 flows out, and the airflow direction is taken as the front-rear direction to describe the front-rear direction of the following components.

As shown in fig. 2 and 4, the first module 1 is schematically shown and is an exploded view. The first module 1 comprises a pole plate fixing frame 11 and a lead fixing frame 12 which are sequentially arranged, a pole plate 13 is fixedly arranged on the pole plate fixing frame 11, and a lead 14 is fixedly arranged on the lead fixing frame 12. The electrode plate holder 11 and the lead holder 12 are coaxially arranged, and the electrode plate 13 and the electrode plate holder 11 extend in the same axial direction, and the lead 13 and the lead holder 12 extend vertically.

The pole plate fixing frame 11 comprises an annular bracket 111, the bracket 111 is a square rod body and is positioned outside at least one end of the wire fixing frame 12, the bracket 111 is provided with clamping grooves 112 which are arranged towards the end of the pole plate 13 and are clamped with the end of the pole plate 13, and the clamping grooves 112 are arranged on the bracket 111 at intervals in parallel. The opposite ends of the bracket 111 are provided with lugs 113 fixedly connected to the wire holder 12. An opening 131 is provided at the end of the pole plate 13 to match the card slot 112.

The wire holder 12 includes an annular peripheral wall 121, front and rear ends of the annular peripheral wall 121 in the axial direction thereof are provided with a plurality of notches 122 for catching the fixed wire 14 in the circumferential direction thereof, and the wire 14 is caught in two planes of the front and rear ends of the annular peripheral wall 121 in the axial direction thereof perpendicularly to the axis of the annular peripheral wall 121. The wires 14 are a plurality of wires arranged in parallel at intervals extending in the radial direction of the wire holder 12.

The annular peripheral wall 121 is provided with two fixing ribs 123 symmetrically along the circumferential direction on the outer peripheral surface, the fixing ribs 123 extend forward and backward along the axial direction of the annular peripheral wall 121, and the front and rear ends of the fixing ribs 123 are fixedly connected with lugs 113 on the polar plate fixing frame 11 respectively. Because the polar plate fixing frames 11 are positioned at the front end and the rear end of the wire fixing frame 12, the polar plate 13 fixedly extends between the front polar plate fixing frame 11 and the rear polar plate fixing frame 11, so that the polar plate 13 extends along the axial direction of the wire fixing frame 12 and penetrates through the wire fixing frame 12, and the polar plate 13 and the inner side surface of the wire fixing frame 12 are spaced, so that creepage caused by too close distance between the polar plate 13 and the wire 14 is prevented, and short circuit is caused between the polar plate 13 and the wire 14.

And a certain interval is required between the protruding strip 123 and the notch 122 for fixing the wire on the annular peripheral wall 121. And the front and rear ends of the protruding strips 123 protrude from the front and rear ends of the annular peripheral wall 121. Although the polar plate fixing frame 11 and the conducting wire fixing frame 12 are made of insulating materials, because the electrostatic fume removing device is used for a long time, fume can gather on the conducting wire fixing frame or the polar plate fixing frame, if the fume is adhered, conduction can be generated between the conducting wire and the polar plate, therefore, the structure reduces the contact area between the polar plate fixing frame 11 and the conducting wire fixing frame 12, surface discharge is prevented, and further short circuit between the conducting wire and the polar plate is prevented.

The edges of the polar plate 13, the polar plate fixing frame 11 and the lead fixing frame 12 are in a round corner transition mode as far as possible, so that liquid drops are prevented from being accumulated at sharp right angles, and further the accumulation of charges can attract the liquid drops of oil smoke, so that the oil smoke is accumulated at the edges of the polar plate 13, the polar plate fixing frame 11 and the lead fixing frame 12. When the oil droplets accumulate too much, they may cause droplet attraction and thus short circuits.

As shown in fig. 2 and 7, the wire connection terminal 125 is provided on the outer surface of the wire holder 12, the wire connection terminal 125 is located at one side of one of the fixing protrusions 123, the wire connection terminal 125 connects the external high voltage electrostatic generator and the wire 14 on the wire holder 12, protruding blocking pieces 126 are provided on the annular peripheral wall 121 of the wire holder 12 on the front and rear sides of the wire connection terminal 125, and the wire connection terminal 125 is better isolated from the plate holders 11 on the front and rear sides of the annular peripheral wall 121.

As shown in fig. 3, 4, 5 and 8, the second module 2 includes an annular housing 21, and plate holders 11 fixed to both front and rear sides of the housing 21, the plate holders having the same structure as the plate holders 11 in the first module 1. The housing 21 is arranged coaxially to the plate holder 11 and also coaxially to the plate holder 11 and the wire holder 12 in the first module 1. The case 21 is provided with two electrode plate holders 11 in front and back, and the second module 2 further includes parallel and alternately arranged positive electrode plates 22 and negative electrode plates 23 extending in the axial direction of the annular case 21, and the two electrode plate holders 11 in front and back of the case 21 fix a set of positive electrode plates 22 and a set of negative electrode plates 23, respectively. Namely, the polar plate fixing frame 11 at the front end fixes one group of the positive polar plate and the negative polar plate, and the polar plate fixing frame 11 at the rear end fixes the other group of the positive polar plate and the negative polar plate.

The inner surface of the shell 21 is provided with a front group of clamping blocks and a rear group of clamping blocks, which are respectively a first group of clamping blocks 211 positioned at the front side and spaced along the circumferential direction of the first group of clamping blocks, and a second group of clamping blocks 212 positioned at the rear side and spaced along the circumferential direction of the second group of clamping blocks, wherein clamping grooves are respectively arranged on the first group of clamping blocks and the second group of clamping blocks and are used for clamping the edges of polar plates, the first group of clamping blocks 211 correspond to clamping grooves 112 on a polar plate fixing frame 11 at the rear side of the shell 21 and are used for fixing the front end and the rear end of one group of positive polar plates and the rear end of the other group of positive polar plates and the second group of clamping blocks 212 correspond to clamping grooves 112 on the polar plate fixing frame 11 at the front side of the shell 21. Therefore, the first group of the fixture blocks 211 and the second group of the fixture blocks 212 are disposed offset in the circumferential direction of the housing 21. Openings 24 are arranged on the positive plate 22 and the negative plate 23 and are engaged with clamping grooves on the clamping blocks. And the front and rear ends of the positive and negative plates are provided with notches 25 which bypass the plate holder 11 toward the position opposite to the plate holder 11 which is not connected with the positive and negative plates.

And, the adjacent parts of the first module 1 and the second module 2 can share one polar plate fixing frame 11. As shown in fig. 5 and 6, the annular bracket 111 of the plate holder 11 is provided with the engaging grooves 112 on both sides thereof, and the engaging grooves 112 on both front and rear sides of the annular bracket 111 are offset from each other. Namely, the polar plate fixing frame 11 between the first module 1 and the second module 2 is fixedly connected with the polar plate 13 in the first module 1 and one group of positive and negative polar plates in the second module 2. This makes the structure simpler and more compact.

The shell 21 is provided with a protruding clamping hook 215 towards the lead fixing frame 12 of the first module, and hooks the polar plate fixing frame 11 between the first module 1 and the second module 2. And the rear side of the housing 21 is provided with a projection 213 protruding toward the rear plate holder 11, the projection 213 protruding to the rear side of the housing 21 and being fixedly connected with the lug 113 on the plate holder 11 by a screw.

The first set of clamping blocks 211 and the second set of clamping blocks 212 are staggered, so that short circuit between the positive and negative plates is less likely to occur due to creepage. In order to better prevent the electric charge from accumulating and attracting oil drops, as shown in fig. 5 and 6, the two sides of the polar plate fixing frame 11 are staggered with each other, and the positions between the adjacent clamping grooves 112 on the same side form a concave arc shape. The concave arc corresponds to the clamping groove 11 on the other surface, reduces the contact area between the polar plates on the two surfaces and the polar plate fixing frame 11, and further prevents the polar plates on the two surfaces fixedly connected with the polar plate fixing frame 11 from generating short circuit.

And as shown in fig. 5 and 6, the front and rear end edges of the inner surface of the case 21 are provided with chamfers 210 for guiding oil on the inner surface to the outer surface direction, avoiding accumulation of liquid soot at the edge of the case 21, and the inner surface of the edge of the case 21, i.e., the inner surface position where the chamfers 210 are provided and the electrode plate, has a gap d between the electrode plate 22 as shown in fig. 5, which is 2mm to 20mm, preferably 5mm to 12mm. Such a chamfer and gap arrangement can prevent the edge of the case 21 from burning through due to accumulation of oil droplets and short-circuiting between the plates.

The electrostatic oil fume removing device is compact in structure, the electrostatic oil fume removing device is provided with the first module, the conducting wires of which are opposite to the polar plates, and the second module, the polar plates of which are opposite to the polar plates, wherein the first module enables oil drops or dust to be charged more easily, the second module enables the charged oil drops or dust to be adsorbed more easily, more conducting wires and polar plates are arranged in a limited small volume space of the electrostatic oil fume removing device, the electric field is generated more uniformly, and the liquid drops or dust adsorption effect is better. And the fixed structure of the polar plates of different anodes and cathodes and the fixed structure of the lead and the polar plates are reasonably arranged, so that short circuit caused by surface discharge or oil drop accumulation between the anode and the cathode is avoided. The integral dust removing effect is better, and the service life is long.

While the preferred embodiments of the present invention have been described in detail, it is to be clearly understood that the same may be varied in many ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electrostatic oil smoke removing device, includes first module (1) and second module (2) of coaxial setting in proper order, its characterized in that: the first module (1) comprises a pole plate fixing frame (11), a wire fixing frame (12), pole plates (13) fixed on the pole plate fixing frame (11) and wires (14) fixed on the wire fixing frame (12) and opposite to the pole plates (13) at intervals, the pole plates (13) and the wires (14) are alternately arranged at intervals, the pole plate fixing frame (11) is arranged on the front side and the rear side of the wire fixing frame (12), the second module (2) comprises positive pole plates (22) and negative pole plates (23) which are oppositely arranged at intervals and alternately arranged, the positive pole plates (22) and the negative pole plates (23) are respectively connected to the positive pole and the negative pole of the static electricity generating device, the pole plates (13) and the wires (14) are respectively connected to the positive pole and the negative pole of the static electricity generating device, the positive pole plates and the negative pole plates and the pole plates (13) extend along the axial directions of the first module and the second module, and the wires (14) extend perpendicularly to the axial directions of the first module and the second module;

the pole plate fixing frame (11) comprises an annular support (111) and clamping grooves (112) which are arranged on the support (111) at intervals, the clamping grooves (112) are used for clamping and fixing the end parts of the pole plates (13), lugs (113) protruding outwards are arranged at two opposite ends of the peripheral surface of the support (111), and the lugs (113) are fixedly connected with the lead fixing frame (12).

2. The electrostatic oil and smoke remover of claim 1, wherein: the wire fixing frame (12) comprises an annular peripheral wall (121), notches (122) distributed along the circumferential direction of the peripheral wall (121) are formed in the peripheral wall (121), and the wires (14) are fixedly clamped into the notches (122).

3. The electrostatic fume removal device of claim 2, wherein: gaps (122) which are distributed at intervals are respectively arranged at the front end and the rear end of the peripheral wall (121).

4. The electrostatic fume removal device of claim 2, wherein: two fixing convex strips (123) which are symmetrically arranged along the circumferential direction are arranged on the outer circumferential surface of the circumferential wall (121), the fixing convex strips (123) extend forwards and backwards along the axial direction of the annular circumferential wall (121) and protrude out of the annular circumferential wall (121), and the lugs (113) are fixedly connected with the fixing convex strips (123).

5. The electrostatic oil and smoke remover according to claim 4, wherein: the annular peripheral wall (121) at one side of one fixing convex strip (123) is provided with a wire connecting joint (125) for connecting wires (14) and an external high-voltage static electricity generating device, and the annular peripheral walls (121) at the front side and the rear side of the wire connecting joint (125) are provided with protruding baffle plates (126) for separating the wire connecting joint (125) and the polar plate fixing frame (11).

6. The electrostatic oil and smoke remover according to any one of claims 1-5, wherein: the second module (2) comprises an annular shell (21) and pole plate fixing frames (11) fixedly arranged on the front side and the rear side of the shell (21), a first group of clamping blocks (211) and a second group of clamping blocks (212) which are circumferentially spaced are respectively arranged on the inner surfaces of the front side and the rear side of the shell (21), one group of positive pole plates and one group of negative pole plates are fixed between the first group of clamping blocks (211) and the pole plate fixing frames (11) arranged on the rear side of the shell (21), and the other group of positive pole plates and the other group of negative pole plates are fixed between the second group of clamping blocks (212) and the pole plate fixing frames (11) arranged on the front side of the shell (21).

7. The electrostatic oil and smoke remover according to claim 6, wherein: the polar plate fixing frame (11) at the front side of the second module (2) is identical to the polar plate fixing frame (11) at the rear side of the first module (1), clamping grooves (112) are formed in the front side and the rear side of the polar plate fixing frame (11), and the clamping grooves (112) in the front side and the rear side are staggered.

8. The electrostatic fume removal device of claim 7, wherein: the positions between the adjacent clamping grooves (112) on the same side of the polar plate fixing frame (11) form a concave arc shape.

9. The electrostatic oil and smoke remover according to claim 6, wherein: the edges of the positive plate and the negative plate are in rounded transition.

10. The electrostatic oil and smoke remover of claim 1, wherein: the edges of the polar plate fixing frame (11) and the lead fixing frame (12) are in round corner transition.

11. The electrostatic oil and smoke remover according to claim 6, wherein: the inner surface edge of the shell (21) forms a chamfer (210), and the space (d) between the inner surface of the shell where the chamfer (210) is positioned and the positive plate and the negative plate is 2mm-20mm.