CN106733194B - Electrostatic equipment and kitchen ventilator - Google Patents

Abstract

The invention discloses an electrostatic device and a range hood. The electrostatic device (4) includes an electrostatic collection module (1), an electrostatic needle module (2) and an electrostatic ionization module (3) stacked in sequence. Both the electrostatic collection module and the electrostatic ionization module include a conductive honeycomb electrode frame (11), and the honeycomb The electrode frame includes a plurality of honeycomb units adjacent to each other, the honeycomb unit includes a honeycomb column hole and an electrode enclosure around the honeycomb column hole, a plurality of needles (21) are arranged in the electrostatic needle module, and the two ends of the plurality of needles are Extend towards the electrostatic collection module and the electrostatic ionization module respectively and insert into a plurality of honeycomb column holes in a one-to-one correspondence. Compared with the common electrode plate-to-electrode plate type electrostatic device, because the common electrostatic device is generally two separate electrostatic collection modules and electrostatic ionization modules, and includes a plurality of scattered electrode plates, its structure is relatively complicated. The present invention The electrostatic device with the honeycomb three-module structure is more simplified, compact and space-saving.

Description

Electrostatic devices and range hoods

technical field

The invention belongs to the field of household electrical appliances, in particular, the invention relates to an electrostatic device and a range hood.

Background technique

At present, it is common to use electrostatic oil filtering for range hoods on the market, and the oil separation degree of range hoods is relatively high. However, due to long-term use, a large amount of grease will accumulate inside the range hood, especially in the fan and pipeline, thereby reducing the performance and smoking effect of the range hood and increasing the noise of the range hood. The method of removing the oil fume in the range hood by absorbing the oil fume with an electrostatic device has gained certain approval in terms of application.

Currently commonly used electrostatic devices include plate-plate type, needle-plate type, and even honeycomb structure. However, the structure of the needle pole and electrode plate of these electrostatic devices is relatively complicated, and there are problems such as the overall structure of the electrostatic device is huge, there are many parts, and installation is time-consuming. There are many problems, and the effect of oil fume collection and purification is not good, and there is still a lot of room for improvement.

Contents of the invention

In order to overcome the above-mentioned defects or deficiencies of the prior art, the present invention provides a novel electrostatic device, which is compact in structure, easy to assemble, and can effectively improve the collection and purification effect of oil fumes.

In order to achieve the above object, the present invention provides an electrostatic device, which includes an electrostatic collection module, an electrostatic needle module and an electrostatic ionization module stacked in sequence, and both the electrostatic collection module and the electrostatic ionization module include conductive A honeycomb electrode frame, the honeycomb electrode frame includes a plurality of adjacent honeycomb units, the honeycomb unit includes a honeycomb column hole and an electrode enclosure surrounding the honeycomb column hole, and the electrostatic needle module is provided with a plurality of Needle poles, two ends of the plurality of needle poles respectively extend toward the static electricity collection module and the static electricity ionization module and are inserted into the plurality of honeycomb column holes correspondingly.

Preferably, the electrostatic needle module includes a conductive honeycomb board, a plurality of honeycomb holes are formed in the honeycomb board, and the needle is installed on the honeycomb board.

Preferably, the honeycomb column holes and the honeycomb holes are polygonal holes of the same size, the honeycomb column holes in the electrostatic collection module and the electrostatic ionization module are aligned one by one, and all the honeycomb column holes in the electrostatic needle module The honeycomb hole is misaligned with the honeycomb column hole in the electrostatic collection module or the electrostatic ionization module, so that the needle is located at the axis of the honeycomb column hole.

Preferably, the first end of the needle electrode extends toward the electrostatic collection module, the second end extends toward the electrostatic ionization module, and the cross-sectional area of the first end is larger than the cross-sectional area of the second end.

Preferably, the end of the second end of the needle pole is a sharp end.

Preferably, the needle pole passes through a single needle pole of the electrostatic needle module, or the needle pole includes a first needle pole and a second needle pole independent of each other, and the first needle pole is obtained from the static needle pole One end of the needle module extends into the honeycomb column hole of the electrostatic collection module, and the second needle extends from the other end of the static needle module into the honeycomb of the static collection module in the column hole.

Preferably, the static electricity collection module, the static needle module and the static ionization module all include an insulating outer frame, and the honeycomb electrode frame and the honeycomb panel are respectively installed in the corresponding insulating outer frame.

Preferably, the insulating outer frames of the electrostatic collection module, the electrostatic needle module and the electrostatic ionization module are all rectangular in shape, and the four corners of the insulating outer frame of the electrostatic needle module are provided with insulating supports A column, both ends of the insulating support column abut against the insulating outer frames of the electrostatic collection module and the electrostatic ionization module respectively.

Preferably, the insulating support column is a telescopic column.

Preferably, the electrostatic device further includes a power supply, and the honeycomb plate and the honeycomb electrode frame are respectively electrically connected to opposite poles of the power supply.

In addition, the present invention also provides a range hood, which includes the above-mentioned electrostatic device.

Preferably, the range hood includes a casing, a fume collecting hood connected to the bottom of the casing, and a volute arranged in the casing, and the electrostatic device is installed in the casing and located in the volute between the air inlet and the fume hood.

Through the above technical solution, the electrostatic device of the present invention includes a total of three module structures of stacked and interspersed electrostatic collection modules, electrostatic needle modules and electrostatic ionization modules. Compared with common electrode plate-to-electrode plate electrostatic devices, its composition The structure is more simplified, compact and space-saving, which improves the convenience of production, manufacture and assembly. The electrostatic device of the present invention adopts a honeycomb structure, and the two ends of a plurality of needle poles extend towards the electrostatic collection module and the electrostatic ionization module respectively and are inserted into a plurality of honeycomb column holes in a one-to-one correspondence. The honeycomb structure can make the electric field of the electrostatic device It is more uniform and stable, so the charged oil fume particles passing through the electrostatic device are easier to capture and collect, so as to achieve better oil fume collection and purification effect.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Figure 1 is an exploded view of an electrostatic device according to a preferred embodiment of the present invention;

2 is a perspective view of an assembled electrostatic device according to a preferred embodiment of the present invention;

Figure 3 is a perspective view of the electrostatic needle module, which partially shows that the needle is installed on the honeycomb board;

Fig. 4 is an enlarged view of part C in Fig. 3;

5 is a top view of an electrostatic device according to a preferred embodiment of the present invention;

Fig. 6 is a cross-sectional view of the electrostatic device in Fig. 5 along the direction A-A;

Figure 7 is an enlarged view of part B in Figure 6;

Fig. 8 is a perspective view of a range hood according to a preferred embodiment of the present invention.

Explanation of reference signs

1 Electrostatic collection module 2 Electrostatic needle module

3 Electrostatic ionization module 4 Electrostatic unit

5 Volute 7 Hood

8 Shell 11 Honeycomb electrode frame

21 Pole 22 Insulation frame

23 Honeycomb panel 24 Insulation support column

211 Collection needle 212 Ionization needle

231 pin installation hole

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

In the present invention, unless stated to the contrary, the used orientation words such as "up, down, top, bottom" generally refer to the directions shown in the drawings or refer to the vertical, perpendicular or gravitational directions The terms used to describe the mutual positional relationship of the various components mentioned above.

First, the present invention provides a novel electrostatic device 4, as shown in Fig. 1, Fig. 2, Fig. 5 and Fig. Modular structure. Both the electrostatic collection module 1 and the static ionization module 3 include a conductive honeycomb electrode frame 11, and the honeycomb electrode frame 11 includes a plurality of honeycomb units adjacent to each other, and the honeycomb unit includes a honeycomb column hole and an electrode enclosure around the honeycomb column hole, so the static electricity The structures of the collection module 1 and the electrostatic ionization module 3 are basically the same. The electrostatic needle module 2 is provided with a plurality of needles 21, and the two ends of the plurality of needles 21 respectively extend toward the electrostatic collection module 1 and the electrostatic ionization module 3 and are inserted into a plurality of uniform and compact honeycomb column holes in a one-to-one correspondence , so that when the electrostatic device 4 is working, the charged oil fume particles are more easily captured and collected, and a better oil fume collection and purification effect is achieved. Compared with the common electrode plate-to-electrode plate type electrostatic device 4, since the common electrostatic device 4 is generally separated into two modules, the electrostatic collection module 1 and the electrostatic ionization module 3, and the electrostatic collection module 1 and the electrostatic ionization module 3 include dispersed There are multiple electrode plates in the electrostatic device 4, and there are many problems such as the overall structure of the electrostatic device 4 is huge, there are many parts, and the installation is time-consuming. In the electrostatic device of the present invention, the honeycomb structure can make the electric field of the electrostatic device 4 more uniform and stable, and the electrostatic device of the present invention is a stacked and interspersed three-module honeycomb structure, and the overall structure is more compact and more stable. save space.

The electrostatic needle module 2 of the electrostatic device 4 of the present invention has an integrated module structure, as shown in Figure 3 and Figure 4, the electrostatic needle module 2 includes a conductive honeycomb panel 23, and a plurality of honeycomb holes are formed in the honeycomb panel 23 , The needle pole 21 is installed on the honeycomb board 23 . There are many ways to fix the needle pole 21 and the honeycomb panel 23, such as welding, and in Figure 3 and Figure 4, the needle pole 21 is detachably installed in the needle pole installation hole 231 of the honeycomb panel 23, which is convenient for installation and disassembly . The honeycomb plate 23 is the installation frame of the needle pole 21, which not only enables the needle pole 21 to be installed as an integral electrostatic needle pole module 2 structure, but also allows the smoke to pass through the electrostatic device 4 smoothly along each honeycomb hole, reducing flow resistance. The above is the preferred structure of the electrostatic needle module 2 in the present invention, but the electrostatic needle module 2 of the present invention is not limited to the structure of the needle pole 21 and the honeycomb panel 23, and can also be installed with needle poles 21 of other arbitrary forms. way, but the electrostatic needle module 2 should facilitate the smooth passage of the flue gas flow without being subjected to large resistance.

In order to make the flue gas flow more smoothly, so as to reduce the wind resistance, the honeycomb column holes and the honeycomb holes are all set as polygonal holes of the same size, as shown in Figure 1 and Figure 2, the polygonal holes are preferably regular hexagons, and the electrostatic collection module 1 and The honeycomb column holes in the electrostatic ionization module 3 are aligned one by one, and the honeycomb holes in the electrostatic needle module 2 are misaligned with the honeycomb column holes in the electrostatic collection module 1 or the electrostatic ionization module 3, so that the needle poles 21 are located in the electrostatic collection module 1 or The axis of the honeycomb column hole of 3 in the electrostatic ionization module. Therefore, the three-module structure of the electrostatic device 4 forms a uniform porous honeycomb structure with a certain depth, which has a rectification effect on the flue gas fluid, and can also effectively optimize the noise of the whole machine and achieve the effect of noise reduction. And the needle pole 21 is arranged at the axis of the honeycomb column hole surrounded by the electrode plate, which can ensure that the electric field in the electrostatic device 4 is more uniform, and the discharge needle pole 21 can discharge evenly.

In the electrostatic device shown in FIG. 5 and FIG. 6 , the first end of the needle pole 21 extends toward the electrostatic collection module 1 , and the second end extends toward the electrostatic ionization module 3 . The general needle pole 21 is a needle-like member with equal diameters. In the electrostatic device 4 of the present invention, the cross-sectional area (or diameter) of the first end is preferably greater than the cross-sectional area (or diameter) of the second end. Each needle There are 21 stepped shafts or two needle poles with different diameters. Wherein the first end of the needle pole 21, as shown in the enlarged view of Figure 3, is the collection needle pole 211 of the electrostatic collector 1, and the second end of the needle pole 21 is the ionization needle pole 212 of the electrostatic ionization module 3, that is, the collection needle pole 211. The diameter is larger than the ionization needle 212, which can obtain obvious electric field enhancement effect. The collection needle 211 is closer to the honeycomb electrode frame 11, so the electrostatic field generated by the static electricity collection module 1 has a stronger electric field, and it is easier to collect oil fume particles, thereby improving the static electricity. Oil filter effect.

The setting of the diameters of the first end and the second end of the needle pole 21 should be based on the actual applicable occasions of the electrode needle plate, as well as factors such as the voltage of the related whole machine, the distance between the pole plates, etc., and at the same time, the avoidance of breakdown and For the phenomenon of sparking, appropriately increase the diameter of the shaft section to obtain a reasonable electric field enhancement effect. At the same time, the tip effect of the stepped shaft needle is more obvious, so the tip discharge effect of the electrostatic ionization module is more significant.

As shown in FIG. 7 , the end of the second end (ionization needle 212 ) of the needle 21 is a sharp end. After the electrostatic ionization module 3 is energized, in the electrostatic field of the electrostatic ionization module 3 , the sharp end of the needle 21 can be electrostatically discharged, so that the surrounding soot particles are ionized and charged. Wherein, the needle pole 21 can be various types of rods, and the cross-sectional area of the needle pole 21 can be circular, or hexagonal, rhombus and other shapes matching the circumferential shape of the pole plate. When the smoke flows through the electrostatic device 4, the smoke can be rectified, which is beneficial to reduce the noise of the whole machine, and the electric field formed by it is more stable.

According to actual processing requirements, the needle pole 21 is a single needle pole passing through the electrostatic needle pole module 2, that is, each needle pole 21 is a single needle pole, or the needle pole 21 includes a first needle pole and a second needle pole that are independent of each other. The needle pole is preferably a two-stage stepped shaft with different diameters. In the needle poles 21 shown in Figures 3 and 4, the ionization needle poles 212 and the collection needle poles 211 are two integrally formed parts of the needle poles 21, that is, each needle pole 21 can be decomposed into the first needle pole section and the second needle pole section. The two needle sections have two sections in total, and each needle 21 is divided into an ionizing needle 212 section and a collecting needle 211 section, and the first needle (collecting needle 211) extends into the electrostatic needle from one end side of the electrostatic needle module 2 In the honeycomb column hole of the collection module 1 , the second needle (ionization needle 212 ) extends from the other end side of the electrostatic needle module 2 into the honeycomb column hole of the electrostatic collection module 1 .

Since a high-voltage electrostatic field will be formed when the electrostatic device 4 is energized, the electrostatic collection module 1, the electrostatic needle module 2 and the electrostatic ionization module 3 also all include an insulating outer frame 22, and the honeycomb electrode frame 11 and the honeycomb panel 23 are respectively installed on the corresponding Inside the insulating frame 22. The insulating outer frame 22 can play the role of high-voltage electrostatic isolation and protection, and at the same time prevent creepage and leakage of the electrostatic device 4 between the electrode plate and the complete machine shell of the range hood.

Wherein, the insulating outer frames 22 of the electrostatic collection module 1, the electrostatic needle module 2 and the electrostatic ionization module 3 are all rectangular in shape, and the four corners of the insulating outer frame 22 of the electrostatic needle module 2 are provided with insulating support columns 24, Two ends of the insulating support column 24 abut against the insulating outer frames 22 of the electrostatic collection module 1 and the electrostatic ionization module 3 respectively.

Preferably, the insulating support column 24 is a telescopic column. The insulating support column 24 of the retractable column determines the adjustment distance according to the actual installation height and the environment, etc., and plays the role of supporting the electrostatic needle module and controlling the installation distance between the static collection module 1 and the electrostatic ionization module 3. The insulating support column 24 It is generally made of engineering plastics with excellent insulation properties. The specific way to adjust the distance can be electric, pneumatic, manual or the like.

In addition, the electrostatic device 4 also includes a power supply, and the honeycomb plate 23 and the honeycomb electrode frame 11 are respectively electrically connected to opposite poles of the power supply. Connecting the honeycomb plate 23 through a high-voltage power supply can make the needle pole 21 electrified, so that the needle pole 21 and the honeycomb electrode frame 11 have opposite positive and negative poles, so as to form a high-voltage electrostatic field.

The operating principle of the high-efficiency oil filtering of the electrostatic device 4 of the present invention is that the two poles (positive and negative poles) of the power supply are respectively connected on the needle pole 21 and the honeycomb electrode frame 11 to form a stable high-voltage electric field, and the second end of the needle pole 21 simultaneously A discharge ionization area is generated near the discharge tip, so that the soot particles passing through it are ionized and charged. The polarity of the charges carried by the soot particles is the same as that of the needle electrode 21 and opposite to the honeycomb electrode frame 11. Then the soot fluid continues to flow and reaches The first end of the needle pole 21 (i.e. in the electrostatic collection module), because the diameter of the needle pole 21 first end in the present invention is thicker than the second end, so the distance between the first end and the honeycomb electrode frame 11 is closer, so that it is closer to the honeycomb electrode frame 11. The soot charged particles with opposite polarities in the electrode frame 11 can be better adsorbed and collected on the honeycomb electrode frame 11 to achieve the effect of electrostatic purification.

In addition, the present invention also provides a range hood. As shown in FIG. 4 , the range hood includes the above-mentioned electrostatic device 4 , and the range hood has the same advantages as the above-mentioned electrostatic device 4 over the prior art, and will not be repeated here.

In the range hood of the present invention, specifically, the range hood includes a housing 8, a smoke collecting hood 7 connected to the bottom of the housing 8, and a volute 5 arranged in the housing 8, and the electrostatic device 4 is installed in the housing 8 And it is located between the air inlet of the volute 5 and the smoke collecting hood 7 . The oil fume first passes through the electrostatic device 4 and is ionized and absorbed before entering the volute 5 . Since most of the oil fume is collected by the electrostatic device, the amount of oil fume flowing into the volute 5 at the rear end is greatly reduced, which not only prolongs the life of the whole machine, but also facilitates the centralized collection and cleaning of oil dirt and the repair and maintenance of the electrostatic device. To a certain degree of environmental protection.

The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, For example, the shape of the honeycomb column hole and the honeycomb hole is not limited to the shape of the polygonal hole, and may also be a circular hole, etc., and these simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be described separately.

In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. An electrostatic device, characterized in that, the electrostatic device (4) comprises an electrostatic collection module (1), an electrostatic needle module (2) and an electrostatic ionization module (3) stacked in sequence, and the electrostatic collection module ( 1) and the electrostatic ionization module (3) all include a conductive honeycomb electrode frame (11), and the honeycomb electrode frame (11) includes a plurality of honeycomb units adjacent to each other, and the honeycomb unit includes a honeycomb column hole and a surrounding The electrode coaming plate of the honeycomb column hole, the static needle module (2) is provided with a plurality of needles (21), and the two ends of the plurality of needles (21) are respectively facing the static collection module ( 1) extending and inserting the electrostatic ionization module (3) into a plurality of the honeycomb column holes in a one-to-one correspondence; Wherein, the electrostatic needle module (2) includes a conductive honeycomb plate (23), and a plurality of honeycomb holes are formed in the honeycomb plate (23), and the needle pole (21) is installed on the honeycomb plate (23). ), the honeycomb column holes and the honeycomb holes are polygonal holes with the same cross-sectional size, and the honeycomb column holes in the electrostatic collection module (1) and the electrostatic ionization module (3) are aligned one by one, and the The honeycomb hole and the honeycomb column hole are dislocated so that the needle pole (21) is located at the axis of the honeycomb column hole. 2. The electrostatic device according to claim 1, characterized in that, the first end of the needle pole (21) extends toward the electrostatic collection module (1), and the second end extends toward the electrostatic ionization module (3) Extending, the cross-sectional area of the first end is larger than the cross-sectional area of the second end. 3. The electrostatic device according to claim 2, characterized in that, the end of the second end of the needle pole (21) is a sharp end. 4. The electrostatic device according to claim 1, characterized in that, the needle (21) is a single needle passing through the electrostatic needle module (2), or the needle (21) includes A first needle pole and a second needle pole independent of each other, the first needle pole protrudes from one end side of the static needle pole module (2) into the honeycomb column hole of the static electricity collection module (1) , the second needle protrudes from the other end side of the static needle module (2) into the honeycomb column hole of the static collection module (1). 5. The electrostatic device according to claim 1, characterized in that, the electrostatic collection module (1), the electrostatic needle module (2) and the electrostatic ionization module (3) all include an insulating outer frame (22), the The honeycomb electrode frame (11) and the honeycomb panel (23) are respectively installed in the corresponding insulating outer frame (22). 6. The electrostatic device according to claim 5, characterized in that, the insulating outer frame (22) of the electrostatic collection module (1), the electrostatic needle module (2) and the electrostatic ionization module (3) are all Rectangular shape, the four corners of the insulating outer frame (22) of the electrostatic needle module (2) are provided with insulating support columns (24), and the two ends of the insulating support columns (24) are respectively abutted against The insulating outer frame (22) of the electrostatic collection module (1) and the electrostatic ionization module (3). 7. The electrostatic device according to claim 6, characterized in that, the insulating support column (24) is a telescopic column. 8. The electrostatic device according to claim 1, characterized in that, the electrostatic device (4) also includes a power supply, and the honeycomb plate (23) and the honeycomb electrode frame (11) are electrically connected to the power supply respectively. Opposite poles. 9. A range hood, characterized in that the range hood comprises the electrostatic device (4) according to any one of claims 1-8. 10. The range hood according to claim 9, characterized in that, the range hood comprises a casing (8), a fume collecting hood (7) connected to the bottom of the casing (8), and a The volute (5) in the body (8), the electrostatic device (4) is installed in the housing (8) and located at the air inlet of the volute (5) and the smoke hood (7) between.