CN107321502B - A sawtooth ionization device - Google Patents

Abstract

The invention discloses sawtooth ionization equipment. The device comprises a shell formed by surrounding a grounding plate, a saw tooth piece arranged in the shell, and a rotating shaft arranged in the shell, wherein the direction of the rotating shaft is parallel to the longitudinal axis of the shell; the sawtooth sheet is fixed on the rotation shaft, the plane of the sawtooth sheet is perpendicular to the rotation shaft, and the sawtooth sheet rotates along with the rotation shaft. The invention realizes the improvement of the coverage rate of the ionization region between the sawtooth tips and the grounding plate, enlarges the magnetic field range and increases the magnetic field density, thereby having the effects of stronger dust carrying capacity and more thorough air purification.

Description

A sawtooth ionization device

Technical Field

The embodiment of the present invention relates to a sawtooth ionization technology in large-scale dust removal equipment in the oil fume purification industry, and in particular to a sawtooth ionization device.

Background technique

In the oil fume purification industry, in addition to mechanical dust removal, the principle of electrostatic dust removal is widely used to purify the air. The existing tungsten filament ionization and sawtooth ionization technologies are applied to this field to achieve the effect of electrostatic dust removal.

Fig. 1a is a front view of a tungsten wire ionization device in the prior art, and Fig. 1b is a top view of the tungsten wire ionization device in Fig. 1a. As shown in Figs. 1a and 1b, the tungsten wire 113 is connected to a positive high voltage of 6000-8000V, and the grounding plate 102 is grounded. Under the action of the high voltage, the tungsten wire 113 ionizes the air, and the positive ions move toward the grounding plate 102 under the action of the electric field. During the movement, they encounter dust particles and bacteria in the air to charge them. The charged particles move toward the grounding plate 102 under the action of the electric field force, thereby playing the role of adsorbing dust shells and bacteria with the grounding plate 201.

FIG. 2a is a front view of a sawtooth ionization device in the prior art, and FIG. 2b is a top view of the sawtooth ionization device in FIG. 2a, which is the mainstream technology in the current oil fume purification industry. A sawtooth piece 201 is arranged between the grounding plates 202. As shown in FIG. 2c, the two sides of the sawtooth piece 201 are composed of continuous concave arc grooves to form sawtooth tips 204. The number of grounding plates 202 can be one or more, and a shell such as a cube or a cylinder is formed. The sawtooth piece 201 is arranged at the center of the shell surrounded by the grounding plate 202, and the plane where the sawtooth piece 201 is located is perpendicular to the cross section of the shell. The sawtooth piece 201 is connected to a high voltage of 10000-14000V, and the grounding plate 202 is grounded. Under the action of the high voltage, the sawtooth 201 ionizes the air, and a glow ionization state appears. In the glow ionization state, a cluster point chain ionization zone is formed with the grounding plate 202, and from top to bottom, the front and rear rows are arranged in parallel or staggered distribution.

The existing technology mainly has the following defects:

1. The charged particles generated by tungsten ionization are unstable. When used in an oily fume environment, grease will wrap around the tungsten filament, resulting in poor ionization effect. In addition, under the action of the electric field, the movement trajectories of the charged particles are roughly consistent, resulting in incomplete coverage of the charged particles on the grounding plate 102, reducing the use efficiency of the grounding plate.

2. Under the action of the electric field, the ionization zone formed by sawtooth ionization is distributed in a clustered point chain. There is an ionization dead zone 203 in the area between the sawtooth tip and the grounding plate, as shown in Figures 2a and 2b, that is, there is no ionization in some areas between the sawtooth tip 204 and the grounding plate 202, so that the dust in some spaces has weak charging ability and poor dust removal effect.

Summary of the invention

The embodiment of the present invention provides a sawtooth ionization device to improve the coverage rate of the ionization area, thereby making the dust charging ability stronger.

To achieve this purpose, an embodiment of the present invention provides a sawtooth ionization device, the device comprising:

A shell formed by a grounding plate, and a serrated piece arranged inside the shell; wherein, it also includes: a rotating shaft, which is arranged inside the shell, and the direction of the rotating shaft is parallel to the longitudinal axis of the shell; the serrated piece is fixed on the rotating shaft, and the plane of the serrated piece is perpendicular to the rotating shaft, and the serrated piece rotates with the rotating shaft.

There are one or more sawtooth pieces, and the plurality of sawtooth pieces are arranged at intervals and connected to the rotating shaft.

The sawtooth blade has one or more sawtooth tips, and the distances between the sawtooth tips and the rotation axis are equal or unequal.

The diameters of the circumscribed circles of the plurality of sawtooth pieces are equal or unequal.

The diameters of the circumscribed circles of the continuous plurality of sawtooth pieces are different, forming a sawtooth piece group, and the number of the sawtooth piece group is at least one.

Wherein, the sawtooth portion of the sawtooth piece is provided with a through hole corresponding to the sawtooth tip portion of the adjacent sawtooth piece.

There may be one or more rotating axes.

Wherein, the above-mentioned device also includes: a retaining spring, which is sleeved on the rotating shaft and is used to fix the sawtooth piece.

Wherein, the above-mentioned device also includes: a wind blade, which is fixed on the rotating shaft and is used to rotate under the action of airflow and drive the rotating shaft to rotate.

The sawtooth ionization device provided by the embodiment of the present invention has a sawtooth blade that rotates as the rotating shaft rotates. The ionization zone formed by the sawtooth tip forms a continuous annular ionization zone as the sawtooth blade rotates, thereby solving the problem of discontinuous ionization zones and improving the ionization zone coverage rate of the area between the sawtooth blade and the grounding plate, thereby making the dust charging ability stronger and purifying the air more thoroughly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 a is a front view of a prior art tungsten wire ionization device.

FIG. 1 b is a top view of a prior art tungsten wire ionization device.

FIG. 2 a is a front view of a prior art sawtooth ionization device.

FIG. 2b is a top view of a prior art sawtooth ionization device.

FIG. 2c is a schematic diagram of the structure of a sawtooth blade of a sawtooth ionization device in the prior art.

FIG. 3 is a schematic structural diagram of a sawtooth ionization device according to Embodiment 1 of the present invention.

FIG. 4 a is a schematic structural diagram of a sawtooth ionization device according to a second embodiment of the present invention.

FIG. 4 b is a structural explosion diagram of the sawtooth ionization device according to the second embodiment of the present invention.

FIG. 5 is a schematic diagram of the structure of the sawtooth blade in the sawtooth ionization device of the third embodiment of the present invention.

FIG6 is a schematic diagram of the ionization zone of the sawtooth ionization device in static state according to the second embodiment of the present invention.

FIG. 7 is a schematic diagram of the ionization zone of the sawtooth ionization device when rotating according to the second embodiment of the present invention.

FIG8 a is a left view of the first group of sawtooth blades in the sawtooth ionization device of the second embodiment of the present invention.

FIG8 b is a left view of the second group of sawtooth blades in the sawtooth ionization device of the second embodiment of the present invention.

FIG8c is a left view of the third group of sawtooth blades in the sawtooth ionization device of the second embodiment of the present invention.

FIG. 9 is a schematic diagram of the distance between sawtooth blade groups in the sawtooth ionization device according to the second embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

Embodiment 1

FIG3 is a schematic diagram of the structure of a sawtooth ionization device provided in Embodiment 1 of the present invention, and the sawtooth ionization device can be applied to scenarios such as range hoods and air purifiers. The sawtooth ionization device comprises: a shell formed by a grounding plate 302, and a sawtooth piece 301 arranged inside the shell; a rotating shaft 307 arranged inside the shell, and the direction of the rotating shaft 307 is parallel to the longitudinal axis of the shell; the sawtooth piece 301 is fixed on the rotating shaft 307, and the plane of the sawtooth piece 301 is perpendicular to the rotating shaft 307, and the sawtooth piece 301 rotates with the rotating shaft.

When the shell is formed by surrounding the grounding plate 302, the grounding plate 302 can be a flat plate or a curved plate, and can be one or more pieces, which are surrounded to form the shell. The shell is not closed, and a windward surface can be formed to allow external air to enter and exit. The cross section of the grounding plate 302 is perpendicular to the windward surface, and the grounding plate 302 parallel to the windward surface is not provided to reduce wind resistance. The grounding plate 302 has an axial hole with the same diameter as the rotating shaft 307, and the two ends of the rotating shaft 307 pass through the axial hole to connect it to the grounding plate 302. The windward surface is the air outlet for the external air supply system to allow dust to enter the shell along the shell.

The number of sawtooth tips on each sawtooth piece 301 is preferably one or more, and the number of sawtooth tips is related to the voltage applied to the sawtooth piece 301 and the distance between the sawtooth piece 301 and the grounding plate 302. The sawtooth tip ring spacing is determined according to the size of the ionization area of each sawtooth tip.

The two ends of the sawtooth piece 301 can be fixed on the rotating shaft 307 by means of a retaining spring 306, and the retaining spring 306 is sleeved on the rotating shaft 307. The sawtooth piece 301 can be conveniently disassembled and cleaned by using the retaining spring 306. Of course, other methods can also be used to fix the sawtooth piece.

The working process of the sawtooth ionization device is:

The sawtooth piece 301 is powered on and connected to a positive voltage of 12000V. The sawtooth tip of the sawtooth piece 301 ionizes the air due to the high voltage, forming a circular glow ionization zone with the sawtooth tip as the center. The rotating shaft 307 rotates, driving the sawtooth piece 301 to rotate, and the circular glow ionization zone rotates and moves in a circle, forming a glow ionization zone in a ring-shaped closed circle. The grounding plate 302 is grounded, and an electric field is formed between the sawtooth piece 301 and the grounding plate 302, which points from the sawtooth piece 301 to the grounding plate 302. The positive ions in the ionization zone move toward the grounding plate 302 under the action of the electric field force. During the movement, they meet and combine with dust in the air, making the dust charged. Under the action of the electric field, the dust moves toward the grounding plate 302 and finally falls on the grounding plate 302, thereby purifying the air.

The technical solution of this embodiment uses a sawtooth ionization device to make the circular ionization zone perform circular motion to form an annular closed loop ionization zone, and forms an ionization zone with high coverage in the area between the sawtooth plate and the grounding plate, thereby solving the problems of discontinuity of the ionization zone and the existence of dead zones, and achieving the effect of high utilization rate of the grounding plate, strong smoke and dust charging capacity, and clean air purification.

Embodiment 2

FIG4a is a schematic diagram of the structure of the sawtooth ionization device provided in the second embodiment of the present invention, and FIG4b is a blast diagram of the sawtooth ionization device provided in the second embodiment of the present invention. Based on the first embodiment, the sawtooth ionization device may further include: a fan blade 408, fixed on the rotating shaft 407, for rotating under the action of the airflow, and driving the rotating shaft 407 to rotate. Thereby, there is no need for an external power source to drive the rotating shaft 407, and the rotating shaft 407 can rotate automatically under the action of the airflow.

Furthermore, the number of the sawtooth pieces 401 is preferably one or more, and a plurality of sawtooth pieces 401 are arranged at intervals and connected to the rotating shaft 407 to form a sawtooth piece group 405 .

The sawtooth pieces 401 are combined into a sawtooth piece group 405, and the number of sawtooth pieces 401 in the same sawtooth piece group 405 is based on the area of the area from the sawtooth piece 401 to the grounding plate 402 required to be covered in the ionization zone. Arranging a sawtooth piece group composed of multiple sawtooth pieces 401 can make the ionization zone coverage rate higher during rotation.

The diameters of the circumscribed circles of the plurality of sawtooth pieces 401 in the sawtooth piece group 405 may be equal or different. The sawtooth portion of the sawtooth piece 401 is provided with through holes corresponding to the sawtooth tips of the adjacent sawtooth piece 401 .

Among them, the circumscribed circle diameters of multiple sawtooth pieces 401 are equal or unequal. When the circumscribed circle diameters of the sawtooth pieces 401 are equal, the sawtooth tips on the sawtooth pieces 401 form annularly distributed ionization zones of the same diameter, and the annular ionization zones of the same diameter overlap and strengthen; when the circumscribed circle diameters of the sawtooth pieces 401 are unequal, the left view of the sawtooth piece group 405 is shown in Figures 8a, 8b, and 8c, and the sawtooth portion on the sawtooth piece 401 with a large circumscribed circle diameter is provided with a through hole 411, which corresponds to the sawtooth tip portion of the sawtooth piece 401 with a small circumscribed circle diameter. The sawtooth tips on the sawtooth pieces 401 with different circumscribed circle diameters form annularly distributed ionization zones of different diameters, so that the outer diameter of the small annular ionization zone is equal to the inner diameter of the large annular ionization zone, thereby forming a circular ionization zone. The arrangement of the sawtooth pieces 401 with different circumscribed circle diameters is not fixed.

Preferably, the diameters of the circumscribed circles of the continuous plurality of sawtooth pieces 401 are different, forming a sawtooth piece group, and the number of the sawtooth piece group is at least one.

There is preferably at least one sawtooth group 405 on the same rotating shaft 307, and the distance between the sawtooth group 405 and the grounding plate 402 is the minimum distance under the premise of ensuring that the electric field does not break down and spark. The two ends of the sawtooth group 405 are fixed to the position on the rotating shaft 407 by a retaining spring 406, and the retaining spring 406 is sleeved on the rotating shaft 407 to prevent movement along the rotating shaft 407. The other side of the retaining spring 406 at one end of the sawtooth group 405 spaced from the grounding plate is adjacent to the fan blade 408, and the fan blade 408 is also inserted into the rotating shaft 407 and fixed on the rotating shaft 407, fixed on the rotating shaft, and used to rotate under the action of airflow and drive the rotating shaft to rotate. The other end of the fan blade 408 is adjacent to the shaft sleeve 409, which penetrates the rotating shaft 407 to fix the fan blade 408 and protect the rotating shaft 407.

The working process of the sawtooth ionization device is:

All sawtooth pieces 401 are powered on at the same time, and a positive voltage of 12000V is connected. The sawtooth tips of the sawtooth pieces 401 ionize the air due to the high voltage, forming the glow ionization zone 610 with a small circular distribution in the static state shown in FIG6 ; the air supply system allows dust to enter the device along the windward side, and the wind drives the fan blades 408 to rotate, and the fan blades drive the rotating shaft 407 to start rotating, and the rotating shaft 407 drives the sleeve 409 and the sawtooth pieces 401 to rotate, and the glow ionization zone with a small circular distribution rotates and moves in a circular motion, forming the glow ionization zone 710 of a ring-shaped closed circle in the dynamic state shown in FIG7 ; the grounding plate 402 is grounded, and an electric field is formed between the sawtooth pieces 401 and the grounding plate 402, which points from the sawtooth pieces 401 to the grounding plate 402. The positive ions in the ionization zone move toward the grounding plate 402 under the action of the electric field force, and meet and combine with dust in the air during the movement, so that the dust is charged, and under the action of the electric field, the dust moves toward the grounding plate 402 and finally falls on the grounding plate 402, thereby purifying the air.

The technical solution of this embodiment uses a sawtooth ionization device. Sawtooth pieces with different circumscribed circle diameters form annular ionization zones with different diameters when rotating, so that the outer diameter of the small annular ionization zone is equal to the inner diameter of the large annular ionization zone, forming a circular ionization zone, and achieving full coverage of the area between the sawtooth tip and the grounding plate by the ionization zone, and increasing the magnetic field range and magnetic field density, thereby making the dust more electrically charged and purifying the air more thoroughly.

Based on the above solution, the number of the rotating axes is preferably one or more.

Wherein, when the area of the windward surface can be placed with multiple groups of the above-mentioned sawtooth ionization equipment, multiple rotating shafts 407 can be placed on the same grounding plate 402 at the same time, so that it meets the longitudinal length of the windward surface, and the vertically distributed sawtooth groups 405 are vertically staggered as much as possible, that is, the sawtooth 401 with the largest circumscribed circle diameter in one group of sawtooth groups 405 in the vertical position corresponds to the sawtooth 401 with the smallest circumscribed circle diameter in another group of sawtooth groups 405, so that the ionization zones formed by the sawtooth groups 405 overlap and cover evenly. The distance between the rotating shafts 407 is represented by the distance between the sawtooth groups 405, as shown in Figure 9, and the determination of the distance can make the ionization zones formed by adjacent sawtooth groups 405 connected, preferably, some ionization zones can overlap. When multiple groups of sawtooth ionization equipment can be placed in the horizontal direction of the windward surface, the same equipment can also be expanded outward in the horizontal direction so that it covers the entire windward surface.

The working process of the sawtooth ionization equipment:

All the sawtooth pieces 401 in the sawtooth piece group 405 are powered on at the same time, connected to a positive voltage of 12000V, and all the grounding plates 402 are grounded at the same time. The wiring method of the circuit is parallel, and the other working processes are the same as the working processes of the above-mentioned device.

According to the technical solution of this embodiment, when multiple groups of sawtooth ionization devices are laid over the entire windward surface, the ionization zones formed by the multiple groups of sawtooth ionization devices overlap and cover each other to form an ionization zone of the same size as the windward surface, thereby increasing the magnetic field range and enhancing the magnetic field density, thereby making the dust more electrically charged and purifying the air more thoroughly.

Embodiment 3

Fig. 5 is a schematic diagram of the sawtooth structure of the sawtooth ionization device provided in the third embodiment of the present invention. Based on the second embodiment, the distance between the sawtooth tip 504 and the rotation axis 407 is equal or unequal. This embodiment is applicable to the case where the distance between the sawtooth tip 504 and the rotation axis 407 is unequal.

Among them, when the number of sawtooth tips 504 on the same sawtooth piece 501 is multiple, the distances between the sawtooth tips 504 and the rotation axis 407 are not equal. The ionization zone formed by the sawtooth tip 504 farthest from the rotation axis 407 forms an annular ionization zone with the largest diameter when rotating, and the ionization zone formed by the sawtooth tip 504 closest to the rotation axis 407 forms an annular ionization zone with the smallest diameter when rotating. Therefore, annular ionization zones of different diameters can be formed on the same sawtooth piece 501 and combined into a circular ionization zone.

The working process of the sawtooth ionization device corresponds to the working process of various situations in Example 1, and will not be repeated here.

The technical solution of this embodiment can reduce the number of sawtooth pieces in the sawtooth piece group through the sawtooth ionization device, and form annular ionization zones of different diameters during rotation, so that the outer diameter of the small annular ionization zone is equal to the inner diameter of the large annular ionization zone, forming a circular ionization zone, and achieving full coverage of the area between the sawtooth tip and the grounding plate by the ionization zone, and increasing the magnetic field range and magnetic field density, thereby making the dust charging ability stronger and purifying the air more thoroughly.

A specific embodiment of the present invention further provides a range hood, comprising the sawtooth ionization device provided in any embodiment of the present invention.

Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (6)

1. A sawtooth ionization device, comprising a housing formed by a grounding plate, and a sawtooth blade arranged inside the housing, characterized in that: Also includes a rotating shaft, which is arranged inside the housing, and the direction of the rotating shaft is parallel to the longitudinal axis of the housing; The sawtooth piece is fixed on the rotating shaft, and the plane of the sawtooth piece is perpendicular to the rotating shaft, and the sawtooth piece rotates with the rotating shaft; The sawtooth piece has a plurality of sawtooth tips; The number of the sawtooth pieces is multiple; A plurality of sawtooth pieces are arranged at intervals and connected to the rotating shaft; the diameters of the circumscribed circles of the continuous plurality of sawtooth pieces are different, forming a sawtooth piece group; the sawtooth parts of the sawtooth pieces are provided with through holes corresponding to the sawtooth tips of the adjacent sawtooth pieces. 2. The device according to claim 1 is characterized in that the number of the sawtooth plate group is at least one. 3. The device according to claim 1, characterized in that there are one or more rotating axes. 4. The device according to claim 1, further comprising: A retaining ring is sleeved on the rotating shaft and is used for fixing the sawtooth piece. 5. The device according to claim 1, further comprising: The wind blades are fixed on the rotating shaft and are used to rotate under the action of the airflow and drive the rotating shaft to rotate. 6. A range hood, characterized by comprising the sawtooth ionization device according to any one of claims 1 to 5.