Electrostatic Range Hood

Abstract

The present invention discloses an electrostatic range hood, which includes a hollow chassis box body, an electrostatic field module disposed inside the chassis box body, and an electric control box installed outside the chassis box body for providing power to the electrostatic field module; the electrostatic field module includes a bracket having a receiving space, a plurality of cathode plates that are parallel to each other and stacked at intervals in the receiving space, anode plates disposed between adjacent two cathode plates and spaced from the cathode plates, and a dust collecting plate disposed in the receiving space; the cathode plate includes a flat cathode plate body, a plurality of corona holes penetrating the cathode plate body, and a plurality of corona electrodes horizontally protruding and extending from the inner peripheral side of the corona holes, the corona electrodes are in a pointed shape, and the corona holes and the corona electrodes form a dot-shaped tip discharge structure. Compared with the related art, the electrostatic range hood of the present invention has high smoke removal efficiency and good reliability.

Description

Technical Field

[0001] The present invention relates to the field of air purification equipment, and particularly to an electrostatic oil fume purifier applied to kitchens or industrial sites. Background Art

[0002] Electrostatic oil fume purifiers are generally used to achieve the effect of purifying air such as removing oil fume through electrostatic adsorption.

[0003] The electrostatic oil fume purifier of the related art includes a hollow chassis box body, an electrostatic field module disposed inside the chassis box body, and an electric control box installed outside the chassis box body for providing power to the electrostatic field module. The electrostatic field module includes a plurality of cathode plates stacked at intervals, anode plates disposed between adjacent two cathode plates and spaced from each other, and an integrated plate disposed outside the cathode plates. Through the corona discharge between the magnetic field electrodes, an ion flow is generated. The ion particles are small, can adsorb the waste gas passing through the oil fume purifier, and are degraded inside the machine and flow out through the integrated plate, playing a purification role. Among them, the cathode plate discharges by means of a dot-shaped tip.

[0004] However, in the electrostatic oil fume purifier of the related art, only the outer cathode plate generates a large corona current, and the current of the cathode plate in the middle position is small, so the corona current distribution is uneven; at the same time, for the above reasons, it is necessary to relatively increase the voltage to increase the discharge intensity to capture fine dust particles to achieve the purification effect. However, at the same time, the electric field particles will be repeatedly ionized on the unevenly distributed cathode plates, causing the phenomenon that the particles repeatedly jump on the cathode plates and the anode plates.

[0005] Therefore, it is necessary to provide a new electrostatic oil fume purifier to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above technical problems and provide an electrostatic oil fume purifier with high oil fume removal efficiency and good reliability.

[0007] The present invention provides an electrostatic oil fume purifier, which includes a hollow chassis box body, an electrostatic field module disposed inside the chassis box body, and an electric control box installed outside the chassis box body for providing power to the electrostatic field module; the electrostatic field module includes a bracket having a receiving space, a plurality of cathode plates stacked in parallel and at intervals in the receiving space, anode plates disposed between adjacent two cathode plates and spaced from the cathode plates, and a dust collecting plate disposed in the receiving space; the cathode plate includes a cathode plate main body in a flat plate shape, a plurality of corona holes penetrating through the cathode plate main body, and a plurality of corona electrodes horizontally protruding and extending from the inner peripheral side of the corona holes. The corona electrodes are in a thorn tip shape, and the corona holes and the corona electrodes form a dot-shaped tip discharge structure.

[0008] Preferably, the corona holes include a circular first corona hole and a plurality of waist-shaped and spaced second corona holes. The first corona hole is located at the geometric center of the cathode plate body, and the plurality of second corona holes are arranged around the first corona hole.

[0009] Preferably, the corona holes further include a plurality of circular and spaced third corona holes. The aperture of the third corona holes is smaller than that of the first corona hole, and the plurality of third corona holes are arranged around the first corona hole.

[0010] Preferably, the plurality of second corona holes and the plurality of third corona holes are arranged in a staggered manner.

[0011] Preferably, the corona electrode includes a corona electrode body protruding and extending from the inner peripheral side of the corona hole and a discharge tip protruding and extending from the corona electrode body.

[0012] Preferably, the cross-sectional area of the corona electrode gradually decreases from the corona electrode body towards the direction of the discharge tip.

[0013] Preferably, the bracket includes a front cover and a rear cover which are opposite and spaced apart, four support corners fixedly connecting the four corners of the front cover and the rear cover, a plurality of support rods and a plurality of sleeves; the cathode plate and the anode plate are arranged between the front cover and the rear cover. The two ends of the support rod are respectively fixed to the front cover and the rear cover, and the support rod passes through the cathode plate and the anode plate. The plurality of sleeves are respectively clamped between two adjacent cathode plates and anode plates and sleeved on the support rod.

[0014] Compared with the prior art, the electrostatic field module structure of the electrostatic range hood provided by the present invention belongs to a point-like tip discharge form structure, which not only has a lower breakdown voltage than other forms, but also has a high discharge intensity. Tests show that under the same working voltage, the corona current distribution of the cathode plate discharge of the electrostatic range hood of the present invention is uniform and the discharge intensity is high, which is beneficial to capturing high-concentration fine dust particles. The discharge tip of the corona electrode of the point discharge structure will generate a strong ion flow, increasing the electric wind of the electric field, which is beneficial to reducing the corona blocking phenomenon, and the reliability is better. Moreover, the above point discharge structure makes the corona current distribution uniform and the discharge intensity high, and the effect produced under the same voltage is better than before, and even the same effect can be achieved by reducing the voltage; in addition, the electrostatic range hood with the above point-like tip discharge form enhances the electric wind near the cathode plate and the anode plate, making the discharge tip not easy to accumulate dust, and the smoke removal efficiency is high. Under the condition of an electric field with the same dust collection area, the oil fume purification efficiency is more than twice that of the traditional plate-type electric field electrostatic range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings, where:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the electrostatic field module of the electrostatic oil fume purifier of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the electrostatic field module of the electrostatic oil fume purifier of the present invention from another perspective;

[0018] Figure 3 It is a schematic diagram of the structure of the cathode plate of the electrostatic oil fume purifier of the present invention;

[0019] Figure 4 is Figure 3 The enlarged view of the part shown as A in Specific embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1-4 As shown, the present invention provides an electrostatic oil fume purifier, including a chassis box body (not shown in the figure), an electrostatic field module 1, and an electric control box (not shown in the figure).

[0022] The chassis box body has a hollow structure for accommodating and installing the electrostatic field module and the electric control box.

[0023] The electrostatic field module 1 is arranged in the chassis box body.

[0024] The electrostatic field module 1 includes a bracket 11 with a receiving space, a plurality of cathode plates 12 that are parallel to each other and stacked at intervals in the receiving space, an anode plate 13 arranged between two adjacent cathode plates 12 and spaced from the cathode plates 12, and a dust collecting plate (not labeled) arranged in the receiving space.

[0025] The bracket 11 includes a front cover 111 and a rear cover 112 that are opposite and spaced apart, four support corners 113 fixedly connected to the four corners of the front cover 111 and the rear cover 112, a plurality of support rods 114, and a plurality of sleeves 115.

[0026] The cathode plate 12 and the anode plate 13 are disposed between the front cover 111 and the rear cover 112. Both ends of the support rod 114 are respectively fixed to the front cover 111 and the rear cover 112, forming a fixed support through the front cover 111 and the rear cover 112, and the support rod 114 penetrates through the cathode plate 12 and the anode plate 13, so as to support the cathode plate 12 and the anode plate 13 through the support rod 114.

[0027] A plurality of the sleeves 115 are respectively clamped between two adjacent cathode plates 12 and anode plates 13 and sleeved on the support rod 114. On the one hand, they are supported by the support rod 114. On the other hand, the length of the sleeve 115 is determined according to the voltage level of different high-frequency power supplies used. It is sleeved on the outer periphery of the support rod 114 and is used to equally divide the electric field sheet distance between the cathode plate 12 and the anode plate 13.

[0028] The cathode plate 12 includes a cathode plate main body 121 in a flat plate shape, a plurality of corona holes 122 penetrating through the cathode plate main body 121, and a plurality of corona electrodes 123 horizontally protruding and extending from the inner peripheral side of the corona holes 122. The corona electrodes 123 are in a spike shape, and the corona holes 122 and the corona electrodes 123 form a dot-shaped tip discharge structure, which is in a plum blossom shape as a whole. The dot-shaped tip discharge structure of the cathode plate 12 not only has a lower breakdown voltage than other forms, but also has a high discharge intensity.

[0029] Specifically, the corona holes 122 include a first corona hole 122a in a circular shape and a plurality of second corona holes 122b in a kidney shape and spaced from each other. Among them, the first corona hole 122a is located at the geometric center of the cathode plate main body 121, and the plurality of second corona holes 122b are arranged around the first corona hole 122a.

[0030] More preferably, the corona holes 122 further include a plurality of third corona holes 122c in a circular shape and spaced from each other. The aperture of the third corona holes 122c is smaller than the aperture of the first corona hole 122a, and the plurality of third corona holes 122c are arranged around the first corona hole 122a.

[0031] In this embodiment, the plurality of second corona holes 122b and the plurality of third corona holes 122c are arranged in a staggered manner.

[0032] Of course, the shape of the corona holes 122 is not limited to this, and can also be set as needed.

[0033] The corona electrode 123 includes a corona electrode body 1231 protruding and extending from the inner peripheral side of the corona hole 122 and a discharge tip 1232 protruding and extending from the corona electrode body 1231, that is, the formed dot-shaped tip discharge structure.

[0034] In this embodiment, the cross-sectional area of the corona electrode 123 gradually decreases from the corona electrode body 1231 towards the discharge tip 1232, that is, the corona electrode 123 has a gradually decreasing tip structure, so that the corona hole 122 and the corresponding corona electrode 123 form a plum blossom-shaped structure.

[0035] Tests show that under the same working voltage, the corona current distribution of the cathode plate 12 of the electrostatic range hood of the present invention is uniform and the discharge intensity is high, which is beneficial to capturing high-concentration fine dust particles. The discharge tip 1232 of the corona electrode 123 with a point discharge structure will generate a strong ion flow, increasing the electric wind of the electric field, which is beneficial to reducing the corona blocking phenomenon, and the reliability is better. Moreover, the above point discharge structure makes the corona current distribution uniform and the discharge intensity high, and the effect produced under the same voltage is better than before, and even the same effect can be achieved by reducing the voltage; in addition, the electrostatic range hood with the above dot-shaped tip discharge form enhances the electric wind near the cathode plate 12 and the anode plate 13, making the discharge tip 1232 not easy to accumulate dust, and the smoke removal efficiency is high. In the case of an electric field with the same dust collection area, the oil fume purification efficiency is more than twice that of the traditional plate-type electric field electrostatic range hood. Among them, the electric field power and intensity can be adjusted and arranged according to different requirements in the form of an electric field with the same dust collection area to maximize the effect.

[0036] The electric control box is installed outside the chassis box body to provide power for the electrostatic electric field module 1.

[0037] Compared with the prior art, the electrostatic field module structure of the electrostatic oil fume purifier provided by the present invention belongs to the point-like tip discharge form structure, which not only has a lower corona voltage than other forms, but also has a high discharge intensity. Tests show that under the same working voltage, the corona current distribution of the cathode plate discharge of the electrostatic oil fume purifier of the present invention is uniform and the discharge intensity is high, which is beneficial to capturing high-concentration fine dust particles. And the discharge tip of the corona electrode of the point discharge structure will generate a strong ion flow, increasing the electric wind of the electric field, which is beneficial to reducing the corona blocking phenomenon, and the reliability is better. Moreover, the above point discharge structure makes the corona current distribution uniform and the discharge intensity high, and the effect produced under the same voltage is better than before. Even reducing the voltage can achieve the same effect. In addition, the electrostatic oil fume purifier with the above point-like tip discharge form enhances the electric wind near the cathode plate and the anode plate, making the discharge tip not easy to accumulate dust, and has a high smoke removal efficiency. In the case of an electric field with the same dust collection area, the oil fume purification efficiency is more than twice that of the traditional plate-type electric field electrostatic oil fume purifier.

[0038] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An electrostatic oil fume purifier, comprising a hollow chassis box body, an electrostatic field module arranged inside the chassis box body, and an electric control box installed outside the chassis box body for providing power to the electrostatic field module; the electrostatic field module includes a bracket with a receiving space, a plurality of cathode plates arranged in parallel and spaced apart from each other in the receiving space, anode plates arranged between adjacent two cathode plates and spaced from the cathode plates, and a dust collecting plate arranged in the receiving space, characterized in that, The cathode plate includes a cathode plate body in the shape of a flat plate, a plurality of corona holes penetrating the cathode plate body, and a plurality of corona electrodes horizontally protruding and extending from the inner peripheral side of the corona holes. The corona electrodes are in the shape of pointed tips, and the corona holes and the corona electrodes form a dot-like tip discharge structure. The corona holes include a first corona hole in a circular shape and a plurality of second corona holes in a kidney shape and spaced from each other. The first corona hole is located at the geometric center of the cathode plate body, and the plurality of second corona holes are arranged around the first corona hole. The corona holes further include a plurality of third corona holes in a circular shape and spaced from each other. The aperture of the third corona holes is smaller than the aperture of the first corona hole, and the plurality of third corona holes are arranged around the first corona hole. The plurality of second corona holes and the plurality of third corona holes are arranged in a staggered manner. The corona electrodes include a corona electrode body protruding and extending from the inner peripheral side of the corona holes and a discharge tip protruding and extending from the corona electrode body.

2. The electrostatic oil fume purifier according to claim 1, characterized in that, The cross-sectional area of the corona electrode gradually decreases from the corona electrode body towards the direction of the discharge tip.

3. The electrostatic oil fume purifier according to claim 1, characterized in that, The bracket includes a front cover and a rear cover that are opposite and spaced apart, four support corners fixedly connecting the four corners of the front cover and the rear cover, a plurality of support rods, and a plurality of sleeves. The cathode plate and the anode plate are arranged between the front cover and the rear cover. The two ends of the support rods are respectively fixed to the front cover and the rear cover, and the support rods penetrate through the cathode plate and the anode plate. The plurality of sleeves are respectively clamped between two adjacent cathode plates and anode plates and sleeved on the support rods.

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