Flue gas charging device and flue gas purification equipment

Abstract

The present application relates to the technical field of cooking equipment, and in particular to a smoke charging device and a smoke purification device. The smoke charging device is used to be arranged in a flow channel of the smoke purification device, and the smoke charging device includes a charging mechanism, and the charging mechanism includes a generator head electrically connected to the output electrode; the first end of the generator head is connected to the inner wall surface of the flow channel, and the second end of the generator head points to the inside of the flow channel. The smoke purification device includes the smoke charging device. The smoke charging device and the smoke purification device ionize the smoke near the generator head, and the smoke in the flow channel emits ion wind along the generator head, so that the oil fume pollutant particles in the flow channel are diffusely charged, and the diffusion charging time and diffusion charging range are extended, thereby improving the diffusion charging efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of cooking equipment, and in particular to a smoke charging device and a smoke purification device. Background Art

[0002] Industrial waste gas, motor vehicle exhaust, and fumes from the catering industry and home kitchens are considered the three main culprits of air pollution.

[0003] In particular, a large amount of high-concentration oil smoke is produced during the food cooking process. The household range hoods in old communities directly discharge it to the outside without treating the emitted oil smoke. The emission frequency is the highest and the pollution is the strongest.

[0004] At present, in order to improve the oil fume purification effect, the electrostatic oil fume purification device includes an electrostatic oil fume purification device whose working principle is to use a high-voltage electrostatic field to ionize the aerosol passing through the electrodes, and then use the Coulomb force to force the charged particles to move toward the collecting plate through parallel electrode plates, and collide with the collecting plate to complete the collection action to achieve the purpose of purifying the oil fume. However, the distance between the positive and negative electrodes is usually very small, which makes it easy for the charged particles that are successfully charged with negative ions to directly enter the output positive electrode, causing an air short circuit and resulting in insufficient diffusion charge.

[0005] Therefore, it is urgent to propose a safe and efficient flue gas charging device. Summary of the invention

[0006] The purpose of the present application is to provide a flue gas charging device and a flue gas purification device, so as to solve to a certain extent the technical problem that particles in the electrostatic fume purification device in the prior art are prone to cause air short circuit during the charging process.

[0007] The present application provides a flue gas charging device for being arranged in a flow passage of a flue gas purification device, wherein the flue gas charging device comprises a charging mechanism, and the charging mechanism comprises a generating head electrically connected to an output electrode;

[0008] The first end of the generating head is connected to the inner wall surface of the flow passage, and the second end of the generating head points to the inside of the flow passage.

[0009] In the above technical solution, further, the generating head is in the shape of an elongated column;

[0010] One end of the generating head pointing to the flow passage forms a pointed end.

[0011] In any of the above technical solutions, further, the axis of the generating head forms a first predetermined angle with the opposite direction of the flow direction of the flow channel, and the first predetermined angle is less than 90°.

[0012] In any of the above technical solutions, further, a flow cross section of the flow passage through the first end of the generator head is defined as a predetermined flow cross section, the centroid of the predetermined flow cross section is a predetermined flow axis, and a line between the first end of the generator head and the predetermined flow axis is a radial reference line;

[0013] The projection of the axis of the generating head on the flow cross section forms a second predetermined angle with the radial reference line, and the second predetermined angle is greater than zero and less than 90°.

[0014] In any of the above technical solutions, further, the first predetermined angle is greater than zero and not greater than 75°;

[0015] The second predetermined angle is not less than 25° and not more than 75°.

[0016] In any of the above technical solutions, further, the charging mechanism includes a plurality of the charging heads, and the plurality of the charging heads are arranged at intervals along the circumference of the flow channel.

[0017] In any of the above technical solutions, further, the charging mechanism also includes a base, and the base is arranged around the flow channel;

[0018] The base is provided with a mounting groove extending along the circumference of the flow passage, and the first ends of the plurality of generating heads are all arranged in the mounting groove.

[0019] In any of the above technical solutions, further, the charging mechanism also includes a conductive wire, the base is provided with a threading through hole that penetrates the mounting groove, the conductive wire is arranged in the mounting groove, and one end of the conductive wire is connected to the output electrode via the threading through hole;

[0020] A conductive through hole is formed at the first end of the generator head, and the conductive wire passes through the conductive through hole and is in conduction with the generator head.

[0021] In any of the above technical solutions, further, the flue gas charging device includes a plurality of charging mechanisms, and the plurality of charging mechanisms are arranged in sequence and at intervals along the flow direction of the flow channel, and at least two adjacent charging mechanisms among the plurality of charging mechanisms are electrically connected to the output electrodes with different electrical properties.

[0022] In any of the above technical solutions, further, the bases of two adjacent charging mechanisms are arranged in parallel and the distance between them is not less than 10 mm.

[0023] In any of the above technical solutions, further, the projections of the multiple generating heads of at least two adjacent charging mechanisms within the flow cross section have opposite deflection directions.

[0024] The present application also provides a flue gas purification device, comprising the flue gas charging device described in any of the above technical solutions.

[0025] In any of the above technical solutions, further, the flue gas purification device also includes a smoke pipe connecting device, at least part of the flow passage of the flue gas purification device is formed inside the smoke pipe connecting device, and the flue gas charging device is arranged in the flow passage of the smoke pipe connecting device;

[0026] The flow passage passes through both ends of the smoke pipe connecting device and forms an inlet and an outlet respectively, and the inlet is used to match the air outlet of the range hood;

[0027] Along the flow direction of the flow passage, the flow cross-sectional area of ​​the inlet is smaller than the flow cross-sectional area of ​​the outlet;

[0028] The inner wall surface of the flow passage of the smoke pipe connecting device is provided with spiral patterns.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] The flue gas charging device provided in the present application is used to be arranged in a flow channel of a flue gas purification device, and the flow channel is used to circulate flue gas, and the flue gas includes oil fume pollutant particles. The flue gas charging device includes a charging mechanism, and the charging mechanism includes a generator head electrically connected to the output motor, so that the generator head carries a high-voltage positive charge or a high-voltage negative charge. The two ends of the generator head are respectively a first end and a second end, the first end is connected to the inner wall surface of the flow channel, and the second end points to the inside of the flow channel, and the flue gas near the generator head is ionized. The flue gas in the flow channel emits ion wind along the generator head, so that the oil fume pollutant particles in the flow channel are diffusely charged, and the diffusion charging time and diffusion charging range are extended, thereby improving the diffusion charging efficiency.

[0031] The flue gas purification equipment provided in the present application includes the above-mentioned flue gas charging device, and thus can achieve all the beneficial effects of the flue gas charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A first structural schematic diagram of a flue gas charging device provided in Example 1 of the present application;

[0034] Figure 2 A second structural schematic diagram of the flue gas charging device provided in Example 1 of the present application;

[0035] Figure 3 A first structural schematic diagram of a generating head of a smoke charging device provided in Example 1 of the present application;

[0036] Figure 4 A second structural schematic diagram of a generating head of a smoke charging device provided in Example 1 of the present application;

[0037] Figure 5 A schematic diagram of the structure of a flue gas purification device provided in Example 2 of the present application;

[0038] Figure 6 A first structural schematic diagram of a smoke pipe connecting device of a smoke purification device provided in Example 2 of the present application;

[0039] Figure 7 A second structural schematic diagram of the smoke pipe connecting device of the smoke purification equipment provided in Example 2 of the present application;

[0040] Figure 8 This is a third structural schematic diagram of the smoke pipe connecting device of the flue gas purification equipment provided in Example 2 of the present application.

[0041] Reference numerals:

[0042] 1-charging mechanism; 10-generating head; 100-axis of the generating head; 11-base; 110-threading hole; 12-flow passage; 120-opposite direction of flow direction; 121-radial reference line; 122-tangent line; 2-smoke pipe connecting device; 20-inlet; 21-outlet. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Embodiment 1

[0047] See also Figures 1 to 4 As shown, an embodiment of the present application provides a flue gas charging device, which is at least used to diffuse and charge pollutant particles such as oil smoke in the flue gas, so as to facilitate subsequent condensation and polymerization of pollutants such as oil smoke, so as to improve the cleanliness of the flue gas discharged outdoors.

[0048] in, Figure 1 The first structural schematic diagram of the flue gas charging device provided in this embodiment specifically shows the case where the flue gas charging device includes only one charging mechanism; Figure 2 A second structural schematic diagram of the flue gas charging device provided in this embodiment specifically shows a situation where the flue gas charging device includes two charging mechanisms; Figure 3 A second structural schematic diagram of the generating head of the smoke charging device provided in this embodiment shows the relative positional relationship between the generating head and the flow direction of the flow passage; Figure 4 The first structural schematic diagram of the generating head of the smoke charging device provided in this embodiment shows the projection characteristics of the generating head on the flow cross section of the flow channel.

[0049] See also Figures 1 to 4 Combination Figures 5 to 8 As shown, the flue gas charging device includes a charging mechanism 1, which is arranged in a flow channel 12 of the flue gas purification equipment. The flow channel 12 is used for flue gas circulation. The flow direction of the flue gas in the flow channel 12 is the flow direction of the flow channel 12. The cross section of the flow channel 12 cut by a plane perpendicular to the flow direction is the flow cross section of the flow channel 12.

[0050] Hereinafter, the above components of the flue gas charging device will be described in detail.

[0051] In an optional solution of the present application, the charging mechanism 1 includes a base 11 and a charging head 10 .

[0052] The material of the generator head 10 includes a conductor, such as a conductive metal, and the generator head 10 is electrically connected to the output electrode, that is, the generator head 10 is conductive with the output electrode, so that the generator head 10 carries high-voltage positive electricity or high-voltage negative electricity, so that the generator head 10 can be used as a discharge electrode.

[0053] The two ends of the generating head 10 in the length direction are respectively the first end and the second end. The first end of the generating head 10 is connected to the inner wall of the flow channel 12. Specifically, the first end of the generating head 10 can be directly or indirectly connected to the inner wall of the solid component forming the flow channel 12 of the flue gas purification equipment.

[0054] In order to facilitate fixed installation of the first end of the generator head 10 , the charging mechanism 1 further includes a base 11 , and the first end of the generator head 10 is fixedly installed on the base 11 .

[0055] The second end of the generator head 10 points to the inside of the flow channel 12, that is, the second end of the generator head 10 extends into the inside of the flow channel 12 and contacts the smoke inside the flow channel 12, so that the generator head 10 discharges toward the smoke in the flow channel 12. The flow channel 12 passes through the base 11, so that the second end of the generator head 10 extends from the base 11 to the inside of the flow channel 12.

[0056] Taking the generator head 10 with high voltage positive charge as an example, the positive charge density on the outer surface of the generator head 10 is large, so the electric field strength near the generator head 10 is large, which makes the outer electrons of the pollutant particles such as oil smoke near the generator head 10 excited, so that the pollutant particles such as oil smoke are ionized into particles with high voltage positive charge, thereby realizing the charging of the pollutant particles.

[0057] In addition, since the positive charge density on the outer surface of the generating head 10 is large and the pollutant particles near the generating head 10 are positively charged after ionization, these positively charged pollutant particles are emitted along the length direction of the generating head 10 under the action of the electric field near the generating head 10 to form a point impact ion wind. At the same time, other flue gas particles are added from the edge of the generating head 10 to the vicinity of the generating head 10, and the pollutant particles therein continue to be ionized and form ion wind.

[0058] Similarly, when the generator head 10 is negatively charged with high voltage, the pollutant particles near the generator head 10 are negatively charged after ionization, and these pollutant particles are emitted along the longitudinal axis direction of the generator head 10 to form a point impact ion wind.

[0059] Among them, a secondary flow is formed by making the pollutant particles emerge into the interior of the flow channel 12 in the form of point-impact ion wind. On the one hand, in terms of time, it prolongs the time for the flue gas particles to pass through the charging mechanism 1, thereby increasing the working time of the generator head 10 for diffuse charging of the flue gas particles. On the other hand, in terms of space, the secondary flow increases the influence range of the ion wind, thereby expanding the coverage range of the generator head 10 for diffuse charging of the flue gas particles in the flow channel 12.

[0060] In this embodiment, the generator head 10 is in the shape of an elongated column. The charges on the outer surface of the generator head 10 in the shape of an elongated column are more dense, thereby improving the ionization efficiency and the emission efficiency of the ion wind.

[0061] One end of the generating head 10 pointing to the flow channel 12 forms a tip, so that the generating head 10 can achieve tip discharge, further improving the ionization efficiency and the emission efficiency of the ion wind.

[0062] In this embodiment, each charging mechanism 1 includes a plurality of generating heads 10, and the plurality of generating heads 10 are arranged at intervals along the circumference of the flow channel 12, thereby improving the circumferential coverage of the diffusion charging effect of the charging mechanism 1 along the flow channel 12, and can improve the ionization efficiency and diffusion charging efficiency of the flue gas particles in the flow channel 12.

[0063] Among them, in order to improve the convenience of fixing multiple generating heads 10 and improve the circumferential distribution uniformity of multiple generating heads 10 along the flow channel 12, the base 11 is arranged around the flow channel 12. Specifically, the base 11 can be arranged around the flow channel 12 in a continuous or intermittent manner, and the surrounding shape is not limited to a circular ring, but can also be an elliptical ring or a polygonal ring, etc.

[0064] In an optional scheme of this embodiment, the axis 100 of the generating head is defined as a slender cylindrical axis, and the axis 100 of the generating head forms a first predetermined angle C with the opposite direction 120 of the flow direction of the flow channel 12. The first predetermined angle C is not less than zero degrees and less than 90°, so that the direction of the generating head 10 is perpendicular to or opposite to the flow direction of the flow channel 12, so that the emission direction of the ion wind is different from or even opposite to the flow direction of the flue gas, thereby extending the time for the flue gas to pass through the charging mechanism 1, thereby further extending the diffusion charging time of pollutant particles such as oil smoke.

[0065] Optionally, there is no limitation on the direction of the generator head 10 along the circumferential direction of the flow channel 12, and the diffusion charging time can be prolonged as long as it is tilted in the opposite direction 120 to the flow direction.

[0066] In this embodiment, the flow cross section of the flow passage 12 passing through the first end of the generator head 10 is defined as a predetermined flow cross section, that is, the predetermined flow cross section is a flow cross section intersecting with the first end of the generator head 10 .

[0067] The centroid of the predetermined flow cross section is defined as the predetermined flow axis. When the predetermined flow cross section is circular, the center of the circle is the predetermined flow axis. On this basis, the line between the first end of the generator 10 and the predetermined flow axis is the radial reference line 121.

[0068] The projection of the axis 100 of the generating head on the flow section forms a second predetermined angle B with the radial reference line 121, and the second predetermined angle B is greater than zero and less than 90°. That is, the projection of the generating head 10 is located between the radial reference line 121 and the tangent 122 of the radial reference line 121, and does not coincide with either of them.

[0069] The projection of the generating head 10 on the flow section and the tangent 122 of the radial reference line 121 at the first end of the generating head 10 form a third predetermined angle A, and the third predetermined angle A is the supplementary angle of the second predetermined angle B. The second predetermined angle B and the third predetermined angle A are both not less than 25° and not greater than 75°.

[0070] Among them, when the second predetermined angle B is not less than 25° and the third predetermined angle A is not greater than 75°, the ionization range of the generating head 10 and the component of the emission path of the ion wind on the radial reference line 121 will not be too large, and the component of the tangent 122 of the radial reference line 121 will not be too small. Similarly, when the second predetermined angle B is not greater than 75° and the third predetermined angle A is not less than 25°, the ionization range of the generating head 10 and the component of the emission path of the ion wind on the radial reference line 121 will not be too small, and the component of the tangent 122 of the radial reference line 121 will not be too large, so that the ionization coverage range of the generating head 10 and the emission path of the ion wind are evenly distributed in the flow cross-section, ensuring that the diffusion charging action range of the charging mechanism 1 covers the entire flow cross-section, rather than only covering a part.

[0071] Optionally, the second predetermined angle B and the third predetermined angle A are both 45°.

[0072] By limiting the first predetermined angle C and the second predetermined angle B, when the projections of the multiple generating heads 10 in the flow cross section are unidirectionally tilted, that is, when the multiple generating heads 10 are all tilted clockwise or counterclockwise along the flow cross section, the multiple generating heads 10 are unidirectionally spiral, and then the multiple beams of ion wind emitted by the charging mechanism 1 are spiral as a whole and point to the center of the flow channel 12.

[0073] In an optional scheme of this embodiment, the base 11 is provided with a mounting groove extending along the circumference of the flow channel 12, and the first ends of multiple generating heads 10 are all arranged in the mounting groove. The base 11 and the mounting groove thereon provide installation positions for multiple generating heads 10 arranged at intervals along the circumference of the flow channel 12.

[0074] In this embodiment, the charging mechanism 1 also includes a conductive wire. The base 11 is provided with a wire through hole 110 that penetrates the installation groove. The conductive wire is arranged in the installation groove, so that the installation groove provides an installation position and protection for the conductive wire. One end of the conductive wire is connected to the output electrode via the wire through hole 110. The convenience of electrically connecting the conductive wire to the output motor is improved by providing the wire through hole 110.

[0075] A conductive through hole is provided at the first end of the generating head 10, and the conductive wire is passed through the conductive through hole and is conductively connected to the generating head 10. Specifically, the conductive wire is peeled at a position corresponding to the conductive through hole, and the insulating outer skin of the conductive wire is retained at other positions. This can improve the safety of electricity use while meeting the power supply requirements of the conductive wire to the generating head 10.

[0076] Optionally, to prevent electrical leakage, insulating glue is poured into the installation groove.

[0077] In an optional solution of this embodiment, the flue gas charging device includes a plurality of charging mechanisms 1 , and the plurality of charging mechanisms 1 are sequentially arranged at intervals along the flow direction of the flow channel 12 . The flue gas charging device includes two, three or more charging mechanisms 1 .

[0078] At least two adjacent charging mechanisms 1 among the multiple charging mechanisms 1 are electrically connected to output electrodes of different electrical properties, respectively, so that the generating head 10 of at least one charging mechanism 1 among the charging mechanisms 1 is positively charged, and the generating head 10 of at least one charging mechanism 1 is negatively charged. Therefore, on the basis of the two charging mechanisms 1 with different electrical properties being charged positively and negatively at the same time, the probability and frequency of inelastic collisions of particles carrying different electrical properties in the flow channel 12 are increased under the influence of the electric field force, so that the particles with different electrical properties are condensed to form particles with larger particle size, the number of small-diameter pollutants (less than PM1.0) is reduced, and the number of medium and large-diameter pollutants is increased, thereby simplifying the difficulty of collecting pollutant particles.

[0079] Specifically, when the smoke charging device includes two charging mechanisms 1, the generating heads 10 of the two charging mechanisms 1 are electrically connected to the high-voltage positive power output motor and the high-voltage negative power output electrode respectively.

[0080] When the flue gas charging device includes three charging mechanisms 1, two charging mechanisms 1 can be electrically connected to the high-voltage positive output electrode, and the other charging mechanism 1 can be electrically connected to the high-voltage negative output electrode. Preferably, the negatively charged charging mechanism 1 can be arranged between the two positively charged charging mechanisms 1, which can achieve the alternation of two electric field characteristics and the alternation of electrical properties of the ionized particles, and can effectively improve the electrocoagulation effect.

[0081] In this embodiment, the bases 11 of two adjacent charging mechanisms 1 are arranged in parallel, and the distance between the bases 11 of the two charging mechanisms 1 is not less than 10 mm. On the one hand, it can avoid the creepage phenomenon between the charging mechanisms 1 of different electrical properties, and on the other hand, it can provide each charging mechanism 1 with sufficient flow length for the flue gas to fully diffuse and charge.

[0082] In this embodiment, the projections of the multiple generating heads 10 of at least two adjacent charging mechanisms 1 in the flow cross section have opposite deflection directions, so that the spiral directions of the generating heads 10 of the two adjacent charging mechanisms 1 are opposite, and thus the spiral directions of the emitted ion winds are opposite, which is beneficial to increase the probability and number of ion collisions, and further improve the diffusion charging effect and the condensation effect.

[0083] In this embodiment, the multiple generating heads 10 of adjacent charging mechanisms 1 are staggered, that is, the projections of the second ends of the multiple generating heads 10 of the latter charging mechanism 1 on the base 11 of the previous charging mechanism 1 are located one by one in the multiple gaps formed by the second ends of the multiple generating heads 10 of the previous charging mechanism 1. This improves the spatial three-dimensionality of the ion wind distribution and avoids the risk of creepage between the generating heads 10 of one electrical type.

[0084] Embodiment 2

[0085] Embodiment 2 provides a flue gas purification device, which includes the flue gas charging device in Embodiment 1. The technical features of the flue gas charging device disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the flue gas charging device disclosed in Embodiment 1 will not be described repeatedly.

[0086] Figure 5 A schematic diagram of the structure of the flue gas purification device provided in this embodiment, in order to more clearly show the structure, an exploded diagram of the smoke pipe connecting device and the flue gas charging device is used; Figure 6 A first structural schematic diagram of the smoke pipe connecting device provided in this embodiment, specifically, an axonometric diagram of the smoke pipe connecting device; Figure 7 A second structural schematic diagram of the smoke pipe connecting device provided in this embodiment; Figure 8 This is a third structural schematic diagram of the smoke pipe connecting device of the smoke purification equipment provided in this embodiment.

[0087] Combination Figures 1 to 4 See also Figures 5 to 8 As shown, the flue gas purification device provided in this embodiment includes a flue gas charging device and a flue gas pipe connecting device 2. Specifically, it also includes a flue gas post-processing device.

[0088] In an optional scheme of this embodiment, the flue gas charging device also includes a smoke pipe connecting device 2, and at least a portion of the flow channel 12 of the smoke purification equipment is formed inside the smoke pipe connecting device 2, that is, the interior of the smoke pipe connecting device 2 forms at least a portion of the flow channel 12, and the smoke charging device is arranged in the flow channel 12 of the smoke pipe connecting device 2.

[0089] The flow passage 12 passes through both ends of the smoke pipe connecting device 2 and forms an inlet 20 and an outlet 21 respectively. The inlet 20 is used to match the air outlet of the range hood.

[0090] The inlet 20 of the smoke pipe connecting device 2 is matched with the air outlet of the range hood. The smoke discharged from the range hood enters the smoke pipe connecting device 2, and is diffusely charged by the smoke charging device. The outlet 21 of the smoke pipe connecting device 2 is matched with the smoke post-treatment device, and the smoke that has been diffusely charged can be condensed, collected and purified. Therefore, the smoke can be purified at the air outlet of the range hood, avoiding the pollution of the smoke pipe by pollutants such as oil smoke, thereby achieving the purification of the smoke pipe.

[0091] In this embodiment, along the flow direction of the flow channel 12, the flow cross-sectional area of ​​the inlet 20 is smaller than the flow cross-sectional area of ​​the outlet 21, and the smaller wind area is converted into a larger wind area. According to the Venturi principle, when the wind speed decreases, the movement direction of the oil fume pollutant particles is converted from the flow direction to the movement speed within the flow cross-section, thereby increasing the friction and collision of the oil fume and other pollutant particles in the flow cross-section, and thus accelerating the condensation of the pollutant particles to a certain extent.

[0092] Optionally, the inlet 20 of the smoke pipe connecting device 2 is a round pipe joint, and the outlet 21 of the smoke pipe connecting device 2 is a square pipe joint, and the diameter of the square pipe joint is larger than that of the round pipe joint.

[0093] In this embodiment, the inner wall surface of the flow channel 12 of the smoke pipe connecting device 2 is provided with a spiral pattern (not shown in the figure). By providing the spiral pattern, the pollutant particles in the flue gas are further aggravated in friction and collision during the flow process, thereby further accelerating the agglomeration of the pollutant particles. Specifically, the small-sized pollutant particles are aggregated into medium-sized pollutant particles, and the medium-sized pollutant particles are aggregated into large-sized pollutant particles.

[0094] The flue gas purification equipment in this embodiment has the advantages of the flue gas charging device in the first embodiment, and the advantages of the flue gas charging device disclosed in the first embodiment will not be repeated here.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the present invention and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A flue gas charging device, characterized in that: Used to be arranged in the flow passage of the flue gas purification equipment, the flue gas charging device includes a charging mechanism, and the charging mechanism includes a generating head electrically connected to the output electrode; The first end of the generating head is connected to the inner wall surface of the flow passage, and the second end of the generating head points to the inside of the flow passage; The generating head is in the shape of an elongated column; One end of the generating head pointing to the flow passage forms a pointed end; The axis of the generating head forms a first predetermined angle with the opposite direction of the flow direction of the flow passage, and the first predetermined angle is less than 90°; The flow cross section of the flow passage through the first end of the generator head is defined as a predetermined flow cross section, the centroid of the predetermined flow cross section is a predetermined flow axis, and the line between the first end of the generator head and the predetermined flow axis is a radial reference line; The projection of the axis of the generating head on the predetermined flow cross section forms a second predetermined angle with the radial reference line, and the second predetermined angle is greater than zero and less than 90°; The charging mechanism comprises a plurality of charging heads, and the plurality of charging heads are arranged at intervals along the circumference of the flow passage; The projections of the plurality of generating heads within the predetermined flow cross section are unidirectionally inclined, so that the plurality of generating heads are in a unidirectional spiral shape.

2. The flue gas charging device according to claim 1, characterized in that: The first predetermined angle is greater than zero and not greater than 75°; The second predetermined angle is not less than 25° and not more than 75°.

3. The flue gas charging device according to claim 1, characterized in that: The charging mechanism further includes a base, and the base is arranged around the flow passage; The base is provided with a mounting groove extending along the circumference of the flow passage, and the first ends of the plurality of generating heads are all arranged in the mounting groove.

4. The flue gas charging device according to claim 3, characterized in that: The charging mechanism further includes a conductive wire, the base is provided with a wire through hole penetrating the mounting groove, the conductive wire is arranged in the mounting groove, and one end of the conductive wire is connected to the output electrode via the wire through hole; A conductive through hole is formed at the first end of the generator head, and the conductive wire passes through the conductive through hole and is in conduction with the generator head.

5. The flue gas charging device according to claim 1, characterized in that: It comprises a plurality of charging mechanisms, which are sequentially arranged at intervals along the flow direction of the flow channel, and at least two adjacent charging mechanisms among the plurality of charging mechanisms are electrically connected to the output electrodes with different electrical properties.

6. The flue gas charging device according to claim 5, characterized in that: The bases of two adjacent charging mechanisms are arranged in parallel and the distance between them is not less than 10 mm.

7. The flue gas charging device according to claim 5, characterized in that: The projections of the multiple generating heads of at least two adjacent charging mechanisms within the flow cross section have opposite deflection directions.

8. A flue gas purification device, characterized in that: Comprising the flue gas charging device according to any one of claims 1 to 7.

9. The flue gas purification equipment according to claim 8, characterized in that: It also includes a smoke pipe connecting device, wherein at least part of the flow passage of the smoke purification device is formed inside the smoke pipe connecting device, and the smoke charging device is arranged in the flow passage of the smoke pipe connecting device; The flow passage passes through both ends of the smoke pipe connecting device and forms an inlet and an outlet respectively, and the inlet is used to match the air outlet of the range hood; Along the flow direction of the flow passage, the flow cross-sectional area of ​​the inlet is smaller than the flow cross-sectional area of ​​the outlet; The inner wall surface of the flow passage of the smoke pipe connecting device is provided with spiral patterns.

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