CN110686298B

CN110686298B - Electrostatic module and range hood

Info

Publication number: CN110686298B
Application number: CN201911010964.3A
Authority: CN
Inventors: 刘智; 易榕; 杨涛
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2021-10-26
Anticipated expiration: 2039-10-22
Also published as: CN110686298A

Abstract

The invention discloses a static module and a range hood, wherein the static module comprises: the static electrode is used for ionizing oil stains in the flue gas; the collector is arranged on one side of the static electrode and is used for adsorbing the oil stains after ionization; and a heating member for heating the collector. The technical scheme of the invention can reduce the formation of an oil film on the surface of the polar plate.

Description

Electrostatic module and range hood

Technical Field

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

Background

The frying, frying and other procedures in the cooking process often generate a large amount of oil smoke particles, and the oil smoke particles can enter the interior of a range hood and a public flue along with a range hood and are discharged to the outdoor environment, so that the environment pollution is caused. At present, some range hood products remove oil fume particles by using an electrostatic dust removal mode, namely, the electrostatic dust removal module adopts the working principle that pollutants such as oil fume particles in the air are ionized by a high-voltage electric field, and the charged pollutants are adsorbed to a dust collection electrode under the action of a bias electric field of a dust collection device so as to be separated from air flow. However, the electrostatic technology is adopted to make the oil smoke particles easily form a thick oil film on the surface of the polar plate, so that the effect of adsorbing the oil smoke particles by the polar plate is gradually reduced, and the performance is reduced.

Disclosure of Invention

The invention mainly aims to provide an electrostatic module, aiming at reducing the formation of an oil film on the surface of a polar plate.

In order to achieve the above object, the present invention provides an electrostatic module, including:

the static electrode is used for ionizing oil stains in the flue gas;

the collector is arranged on one side of the static electrode and is used for adsorbing the oil stains after ionization; and

a heating member for heating the collector.

The second heating member heats the collector for the collector heats to the boiling temperature of adsorbed oil smoke granule rapidly, heats adsorbed oil smoke and makes its carbonization become gas, along with the fan exhaust of range hood is indoor, reaches the purpose of exempting from to wash the static module. Meanwhile, as the oil fume particles are heated and evaporated on the collector, the oil fume particles are prevented from depositing in a large amount on the collector to form a thick oil film, so that the adsorption performance of the collector on the oil fume particles is ensured, and the service life of the electrostatic module is prolonged.

Optionally, the heating element is interleaved with the collector.

Thus, the second heating element is embedded in the collector to form contact heating, so that heat conduction is faster.

Optionally, the collector comprises a plurality of collecting plates and a plurality of repelling plates, and the collecting plates and the repelling plates are arranged alternately;

the collecting polar plate is provided with a yielding hole for the heating element to penetrate through, and the repelling polar plate is provided with a yielding hole for the heating element to penetrate through;

the hole edge of the abdicating hole and one of the hole edges of the abdicating hole are in contact with the heating piece, and the other one is in circumferential clearance with the heating piece.

Thus, the collecting plate and the repelling plate can be prevented from conducting electricity.

Optionally, an abutting flange is arranged at the hole edge of the abdicating hole and wraps the heating element; alternatively, the first and second electrodes may be,

the hole edge of the avoiding hole is provided with a butt flanging, and the butt flanging wraps the heating element.

The contact area between the second heating member and the collecting polar plate is increased due to the arrangement of the butt flanging, so that the heat transfer effect between the second heating member and the collecting polar plate is enhanced, and the efficient transfer of the temperature is realized.

Optionally, the electrostatic module further includes a first connecting rod, the first connecting rod is inserted into the repelling polar plates along the arrangement direction of the repelling polar plates to connect the repelling polar plates, and the first connecting rod and the collecting polar plates are arranged at intervals; and/or the presence of a gas in the gas,

the electrostatic module further comprises a second connecting rod, the second connecting rod penetrates through the collecting pole plates along the arrangement direction of the collecting pole plates so as to connect the collecting pole plates, and the second connecting rod and the repelling pole plates are arranged at intervals.

The arrangement of the first connecting rod and the second connecting rod can fix the collecting polar plate and the repelling polar plate.

Optionally, the heating element includes a heating pipe, the heating pipe includes two insertion sections arranged in parallel and a connection section connecting the two insertion sections, and the insertion sections are inserted into the collector.

The arrangement of two interpenetration sections can increase the heat transfer area.

Optionally, the static electrode comprises an ionization section and a discharge element arranged between the two ionization sections;

the collecting pole plate of the collecting pole extends towards the flowing direction of the smoke to form the ionization section, and the ionization section protrudes out of the repelling pole plate.

The collecting section and the ionization section form a plate body together, so that the integral structure of the electrostatic module is simplified, no mounting gap exists between the electrostatic electrode and the collecting electrode, and the compactness of the structure is improved.

Optionally, the electrostatic module further includes a connecting plate, the connecting plate extends along the arrangement direction of the plurality of collecting plates, and the connecting plate is provided with a plurality of discharging elements.

Optionally, the electrostatic module further includes two mounting side plates, the mounting side plates extend along a distribution direction of the static electrode and the collector, and the static electrode and the collector are located between the two mounting side plates;

the heating member is installed at the installation side plate.

The discharge elements are integrally arranged on the connecting plate to form modularization, so that the whole assembly is facilitated, and the discharge elements are convenient to run.

The invention also provides a range hood, comprising:

a housing having a smoke collection chamber; and

the electrostatic module is positioned in the smoke collection cavity;

the electrostatic module includes:

the static electrode is used for ionizing oil stains in the flue gas;

a heating member for heating the collector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a range hood of the present invention;

FIG. 2 is a cut-away schematic view of the electrostatic module of FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

fig. 4 is a schematic plan view of the electrostatic module of fig. 1;

FIG. 5 is a schematic structural diagram of the electrostatic module of FIG. 1;

FIG. 6 is a schematic sectional view of an electrostatic module and a catalytic decomposition module in another embodiment of the range hood of the present invention;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic structural view of another embodiment of the range hood of the present invention;

FIG. 9 is a schematic structural view of the electrostatic module and the catalytic decomposition module of FIG. 8;

FIG. 10 is a cutaway schematic view of the electrostatic module and catalytic decomposition module of FIG. 9;

fig. 11 is a schematic structural view of the electrostatic module and the catalytic decomposition module of fig. 9 from another angle.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Outer casing	2222	Through hole
11	Smoke collecting cavity	23	First connecting rod
				20	Electrostatic module	24	Second connecting rod
21	Static electrode	25	Connecting plate
				211	Ionization section	26	Mounting side plate
212	Discharge element	27	Mounting frame
				22	Collector electrode	30	Catalytic decomposition module
221	Collecting polar plate	31	Catalytic unit
				2211	Hole of stepping down	32	Outer frame
2212	Butting flanging	40	Heating element
				2213	Avoiding hole	41	First heating member
2214	Connecting hole	411	Heating tube
				2215	Collecting section	42	Second heating element
222	Repelling polar plate	421	Insertion section
				2221	Avoiding hole	422	Connecting segment

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a static module which can be used for a range hood or other equipment for treating smoke.

In the embodiment of the present invention, as shown in fig. 1 and fig. 2, the electrostatic module 20 includes an electrostatic electrode 21 and a collector 22 (in fig. 2, the part below the dashed line frame a-a is the electrostatic electrode 21, and the part above the dashed line frame a-a is the collector 22), and the electrostatic electrode 21 is used for ionizing oil stains in the flue gas. In some embodiments, the static electrodes 21 include a plurality of first plates and a plurality of second plates, the polarities of the first plates and the second plates are opposite, that is, one of the first plates and the second plates is a positive electrode, and the other is a negative electrode, that is, the second plates are a negative electrode when the first plates are the positive electrode, and the second plates are the positive electrode when the first plates are the negative electrode. The first polar plates and the second polar plates are arranged in a staggered manner, namely, the positive electrodes and the negative electrodes of the first polar plates and the second polar plates are arranged in a staggered manner, so that when the static electrodes 21 are electrified, an electric field can be formed between the first polar plates and the second polar plates, and an ionization space is formed in front of the adjacent first polar plates and the adjacent second polar plates, so that after smoke enters the ionization space, lampblack particles in the smoke are electrified. In some embodiments, stationary electrode 21 includes a discharge tip and a plate, the discharge tip discharging a charge opposite in polarity to the plate, and similarly, an ionization space is formed between the discharge tip and the plate.

The collector 22 is disposed on one side of the static electrode 21, and the collector 22 is configured to adsorb oil stains after ionization. Specifically, the collector 22 is disposed downstream of the static electrode 21 in the lampblack flow direction, and a collecting space is formed in the collector 22 and is adapted to collect lampblack particles charged in the static electrode 21 and flowing into the collecting space. Here, "downstream" means that the soot entering the range hood flows into the static electrode 21 first, then flows into the collector 22, and is adsorbed on the collector 22.

The electrostatic module 20 further includes a high voltage power supply for providing high voltage power to the static electrode 21 and the collector 22 to ensure that the static electrode 21 and the collector 22 can work normally.

When the static electrode 21 is electrified, the static electrode 21 discharges, so that air around the static electrode 21 is ionized and positive ions or negative ions are generated, when oil smoke enters an ionization space, the positive ions or the negative ions are adsorbed on oil smoke particles, so that the oil smoke particles are electrified, the electrified oil smoke particles can enter the collector 22 of the range hood and are adsorbed on the collector 22 under the action of the electric field force of the collector 22, and the oil smoke particles in the oil smoke are removed.

According to the electrostatic module 20 for separating oil fume, which is disclosed by the embodiment of the invention, the oil-fat separation degree in the oil fume can be improved, the accumulation of the oil fume in a fan pipeline is reduced, the problem that the service performance of the range hood is reduced for a long time is solved, and the service life of the range hood is prolonged.

In one embodiment, the electrostatic module 20 further comprises a heating element (for convenience of distinction, the heating element is illustrated as a second heating element 42), and the second heating element 42 is used for heating the collector 22. The second heating member 42 heats the collector 22 in various ways, for example, the second heating member 42 may be directly heated in contact with the collector 22, or the second heating member 42 may be spaced apart from the collector 22. The second heating member 42 may specifically include a mode or structure of resistance wire heating, microwave heating, electromagnetic wave heating and exchange, convective heat transfer, and the like.

The power of the second heating member 42 may be 100W or more depending on the heating temperature and time, for example, the power of the second heating member 42 may be 200W or more. In addition, the heating temperature of the second heating member 42 may be up to 100 ° and more, and alternatively, the heating temperature of the second heating member 42 may be up to the smoke point temperature of the edible oil, for example, may be 200 ° or 300 ° and more.

After the collector 22 is heated and activated by the second heating element 42, the surface temperature of the collector 22 may reach 100 ° or more, and optionally, the surface temperature of the collector 22 may reach above the smoke point temperature of the edible oil, for example, the surface temperature of the collector 22 may be 200 ° or more, so that the soot particles attached to the collector 22 are heated and evaporated.

In the invention, the second heating element 42 is arranged to heat the collector 22, and after the collector 22 is heated and started by the second heating element 42, the collector 22 is rapidly heated to the boiling point temperature of the adsorbed lampblack particles, so that the adsorbed lampblack is heated and carbonized into gas, and the gas is discharged out of a room along with a fan of the range hood, thereby achieving the purpose of cleaning-free electrostatic module 20. Meanwhile, as the oil smoke particles are heated and evaporated when being adsorbed to the collector 22, the oil smoke particles are prevented from depositing in the collector 22 to form a thick oil film, so that the adsorption performance of the collector 22 on the oil smoke particles is ensured, and the service life of the electrostatic module 20 is prolonged.

In one embodiment, the second heating element 42 is inserted through the collector 22. The penetration here means that the collector 22 is provided with a through hole, and the second heating member 42 penetrates through the through hole, so that the second heating member 42 is embedded in the collector 22 like a part, and contact heating is formed, so that heat conduction is faster. In addition, the second heating element 42 is inserted into the collector 22 to support the collector 22, so as to reduce the number of the supporting structures of the electrostatic module 20. Moreover, the second heating member 42 is inserted into the collector 22, so that the whole structure is more compact, and other installation spaces are not required to be reserved in the range hood for placing the second heating member 42, thereby reducing the occupation of the internal space of the range hood.

Referring to fig. 3 in combination, specifically, the collector 22 includes a plurality of collecting plates 221 and a plurality of repelling plates 222, and the collecting plates 221 and the repelling plates 222 are alternately arranged. The alternating arrangement means that one repulsive plate 222 is disposed between two adjacent collecting plates 221, and one collecting plate 221 is also disposed between two adjacent repulsive plates 222. Adjacent collecting plates 221 and repelling plates 222 are spaced apart to form collecting spaces between adjacent collecting plates 221 and repelling plates 222. The collecting plate 221 and the repelling plate 222 are of opposite polarity such that the collecting space forms an electric field. For example, the collecting plate 221 is grounded, the repelling plate 222 is connected to a high voltage, and soot particles positively charged on the static electrode 21 are adsorbed on the collecting plate 221.

In the embodiment that the second heating element 42 is inserted in the collector 22, the collecting pole plate 221 is provided with a abdicating hole 2211 for the second heating element 42 to pass through, the repelling pole plate 222 is provided with an abdicating hole 2221 for the second heating element 42 to pass through, and the second heating element 42 respectively passes through the collecting pole plate 221 and the repelling pole plate 222, so as to heat the collecting pole plate 221 and the repelling pole plate 222. Since the polarities of the collecting pole plate 221 and the repelling pole plate 222 are different, in order to prevent the conduction of the similar pole plates, that is, the collecting pole plate 221 and the repelling pole plate 222, in the embodiment of the present invention, one of the hole edge of the offset hole 2211 and the hole edge of the offset hole 2221 is in contact with the second heating element 42, and the other is spaced from the second heating element 42 by forming a circumferential gap therebetween.

In one embodiment, the hole edge of the receding hole 2211 is in contact with the second heating element 42, the second heating element 42 directly contacts and heats the collecting electrode plate 221, and the polarity of the collecting electrode plate 221 is opposite to the polarity of the electric charge of the charged soot particles, so that the soot particles are finally adsorbed on the collecting electrode plate 221, and thus the second heating element 42 can rapidly heat and evaporate the soot particles adsorbed on the collecting electrode plate 221. And, the second heating member 42 is in direct contact with the collecting electrode plates 221, and the second heating member 42 can string up the plurality of collecting electrode plates 221, thereby realizing the support and connection of the plurality of collecting electrode plates 221.

In this embodiment, the second heating element 42 is tightly fitted with the collecting plate 221, so that the collecting plate 221 can be tightly clamped and fixed, and the collecting plate 221 is prevented from moving. Specifically, the hole edge of the abdicating hole 2211 is provided with an abutting flange 2212, and the abutting flange 2212 wraps the second heating element 42. The contact area between the second heating element 42 and the collecting pole plate 221 is increased by the arrangement of the abutting flange 2212, so that the heat transfer effect between the second heating element 42 and the collecting pole plate 221 is enhanced, and the efficient temperature transfer is realized. The abutting flange 2212 is an annular flange extending in the circumferential direction of the relief hole 2211.

Referring to fig. 4, in order to prevent the collecting plate 221 from shaking, the collecting plate 221 is provided with a plurality of second heating members 42, and the plurality of second heating members 42 are arranged at intervals along the length direction of the collecting plate 221, i.e., along the flow direction of the flue gas, so that the positions of the collecting plate 221 near the two end portions are fixed. Also, the arrangement of the plurality of second heating members 42 makes the heat transfer effect better.

In this embodiment, an annular gap is formed between the edge of the avoiding hole 2221 and the second heating element 42, and the second heating element 42 and the repelling polar plate 222 are arranged at an interval, so that the repelling polar plate 222 and the second heating element 42 are prevented from conducting electricity. In addition, an insulating layer may be disposed at the periphery of the second heating element 42 and corresponding to the circumferential gap, and the insulating layer fills up the circumferential gap, so that the second heating element 42 may also play a role of fixing and supporting the repelling polar plate 222, and the insulating layer may also prevent the conduction between the second heating element 42 and the repelling polar plate 222.

In one embodiment, the edge of the avoiding hole 2221 is in contact with the second heating member 42, and the second heating member 42 directly performs contact heating on the repelling polar plate 222. Although the polarity of the collecting pole plate 221 is opposite to the charge polarity of the charged soot particles, most soot particles are adsorbed on the collecting pole plate 221, but a part of soot particles will be attached to the repelling pole plate 222, so that the second heating element 42 directly contacts the repelling pole plate 222 to rapidly heat and evaporate the soot particles attached to the repelling pole plate 222. And the second heating member 42 is in direct contact with the repelling polar plate 222, and the second heating member 42 can string up the repelling polar plates 222 to support and connect the repelling polar plates 222. Furthermore, the second heating member 42 conducts heat convectively with the collecting plate 221, and the distance between the second heating member 42 and the collecting plate 221 is short, so that the collecting plate 221 can be heated quickly by the second heating member 42.

In this embodiment, the second heating member 42 and the repelling polar plate 222 are tightly fitted, so that the repelling polar plate 222 can be clamped and fixed, and the repelling polar plate 222 is prevented from moving. Specifically, the hole edge of the avoiding hole 2221 is provided with a butt flange, and the butt flange wraps the second heating member 42. The contact area between the second heating member 42 and the repelling polar plate 222 is increased by the arrangement of the abutting flanging, so that the heat transfer effect between the second heating member 42 and the repelling polar plate 222 is enhanced, and the efficient temperature transfer is realized. Note that the abutment flange is an annular flange extending along the circumferential direction of the avoiding hole 2221.

In order to prevent the repelling polar plate 222 from shaking, the repelling polar plate 222 is provided with a plurality of second heating members 42, and the plurality of second heating members 42 are arranged at intervals along the extending direction of the repelling polar plate 222, i.e. along the flowing direction of the flue gas, so that the positions of the repelling polar plate 222 close to the two end parts are fixed.

In this embodiment, an annular gap is formed between the edge of the offset hole 2211 and the second heating element 42, and the second heating element 42 and the collecting plate 221 are spaced apart from each other, so that the collecting plate 221 and the second heating element 42 are prevented from conducting electricity. Besides, an insulating layer may be disposed at the periphery of the second heating element 42 and corresponding to the circumferential gap, and the insulating layer fills up the circumferential gap, so that the second heating element 42 can also play a role of fixing and supporting the collecting electrode plate 221, and the insulating layer can also prevent the conduction between the second heating element 42 and the collecting electrode plate 221.

Referring to fig. 5 to 7, in an embodiment, to support and fix the plurality of repelling plates 222, the electrostatic module 20 further includes a first connecting rod 23, the first connecting rod 23 is inserted into the repelling plates 222 along the arrangement direction of the plurality of repelling plates 222 to connect the plurality of repelling plates 222, and the first connecting rod 23 is spaced from the collecting plate 221. Specifically, the repelling polar plate 222 is provided with a mounting hole, and the first connecting rod 23 penetrates through the mounting hole and contacts with the edge of the mounting hole. Optionally, the first connecting rod 23 is a tight fit with the mounting hole, thereby preventing movement of the repeller plate 222. In this embodiment, the first connecting rod 23 contacts only the repulsive plate 222, and the repulsive plate 222 is connected thereto. Since the repelling polar plate 222 and the collecting polar plate 221 are arranged side by side, in order to facilitate the arrangement of the first connecting rod 23, the collecting polar plate 221 may also be provided with a clearance 2213 for the first connecting rod 23 to pass through, and an annular gap is formed between the first connecting rod 23 and the edge of the clearance 2213, so as to prevent the first connecting rod 23 from contacting the collecting polar plate 221. In addition, the periphery of the first connecting rod 23 may further be provided with an insulating layer, and the insulating layer is in contact with the hole edge of the avoiding hole 2213, that is, the annular gap is filled with the insulating layer, so that the first connecting rod 23 may also support and fix the collecting electrode plate 221. In addition, the first connecting rod 23 may be a non-conductive member, so that even if the first connecting rod 23 contacts the collecting plate 221, it is possible to prevent electrical conduction therebetween. In addition, the repelling plate 222 may also extend along the width direction to protrude from the collecting plate 221, and the first connecting rod 23 is connected to the protruding portion of the repelling plate 222 to avoid the collecting plate 221. Alternatively, the first connecting rod 23 may be disposed between the two second heating members 42.

In an embodiment, to support and fix the plurality of collecting plates 221, the electrostatic module 20 further includes a second connecting rod 24, wherein the second connecting rod 24 is inserted into the collecting plates 221 along the arrangement direction of the plurality of collecting plates 221 to connect the plurality of collecting plates 221, and the second connecting rod 24 is spaced from the repelling plates 222. Specifically, the collecting plate 221 is provided with a connecting hole 2214, and the second connecting rod 24 penetrates through the connecting hole 2214 and contacts with the edge of the connecting hole 2214. Optionally, the second connecting bar 24 is tightly fitted with the connecting hole 2214, thereby preventing the movement of the collecting plate 221. In this embodiment, the second connecting bar 24 only contacts the collecting plate 221, so as to connect the collecting plate 221. Because the collecting pole plate 221 and the repelling pole plate 222 are arranged side by side, in order to facilitate the arrangement of the second connecting rod 24, a through hole 2222 can be also formed in the repelling pole plate 222 for the second connecting rod 24 to penetrate through, and an annular gap is formed between the second connecting rod 24 and the hole edge of the through hole 2222, so as to prevent the second connecting rod 24 from contacting with the repelling pole plate 222. In addition, the periphery of the second connecting rod 24 may further be provided with an insulating layer, the insulating layer is in contact with the hole edge of the through hole 2222, that is, the annular gap is filled with the insulating layer, so that the second connecting rod 24 may also support and fix the repelling polar plate 222. In addition, the second connecting bar 24 may be a non-conductive member, so that even if the second connecting bar 24 is in contact with the repulsive pole plate 222, it is possible to prevent conduction therebetween. In addition, the collecting pole plate 221 may also extend along the width direction to protrude from the repelling pole plate 222, and the second connecting rod 24 is connected to the protruding portion of the collecting pole plate 221 to avoid the repelling pole plate 222. Alternatively, the second connecting rod 24 may be disposed between two second heating members 42.

Referring to fig. 5 and fig. 6 again, the specific heating types and structures of the second heating element 42 are various, in an embodiment, the second heating element 42 includes a heating pipe, the heating pipe includes two penetrating segments 421 arranged in parallel and a connecting segment 422 connecting the two penetrating segments 421, and the penetrating segments 421 penetrate the collector 22. Alternatively, the two insertion sections 421 and the connection section 422 form a U-shaped structure. Because two penetrating sections 421 are arranged and the penetrating sections 421 extend along the arrangement direction of the plurality of collecting pole plates 221 and penetrate through the collecting electrodes 22, each collecting pole plate 221 can contact the penetrating sections 421, and a better heating effect is achieved. Also, the two penetrating segments 421 are provided such that a plurality of positions of the collecting plate 221 are all heated, for example, the two penetrating segments 421 are distributed in the width direction of the collecting plate 221 such that the heat of the second heating member 42 can be rapidly transferred to the front and rear sides of the collecting plate 221. In addition, the two penetrating segments 421 may also be distributed along the length direction of the collecting plate 221, so that the heat of the second heating member 42 can be quickly transferred to both ends of the length direction of the collecting plate 221. In addition, in other embodiments, the heating pipe 411 may also include only one penetrating segment 421 or more penetrating segments 421. Similarly, the connecting rod may also include a plurality of connecting segments 422 disposed in parallel, each connecting segment 422 being inserted through the collector 22.

Referring to fig. 3 and fig. 6, in an embodiment, the static electrode 21 includes an ionization section 211 and a discharge element 212 disposed between the ionization sections 211; the collecting pole plate 221 of the collecting pole 22 extends towards the flowing direction of the flue gas to form the ionization section 211, and the ionization section 211 protrudes from the repelling pole plate 222. The collecting plate 221 thus comprises a collecting section 2215 and an ionizing section 211 which are connected, and the collecting section 2215 and the repelling plate 222 are oppositely arranged to form the collector 22. The collecting section 2215 and the ionizing section 211 together form a plate structure, which is beneficial to simplifying the overall structure of the electrostatic module 20, and no installation gap is formed between the static electrode 21 and the collecting electrode 22, so that the structure compactness is improved.

In this embodiment, only a portion of the collecting plate 221 is formed with the ionizing section 211 and the other portion of the collecting plate 221 is not formed with the ionizing section 211. Specifically, a plurality of repulsion plates 222 and a plurality of collection sections 2215 are disposed between two adjacent ionization sections 211, for example, the total number of repulsion plates 222 and collection sections 2215 between two adjacent ionization sections 211 may be 3, 5, 7 or an odd multiple of 3, 5, 7. Of course, in other embodiments, each collecting plate 221 is formed with an ionizing section 211.

In order to facilitate the arrangement of the discharge elements 212, the electrostatic module 20 further includes a connecting plate 25, the connecting plate 25 extends along the arrangement direction of the plurality of collecting plates 221, and the connecting plate 25 is provided with a plurality of discharge elements 212. The plurality of discharge elements 212 are integrally arranged on the connecting plate 25 to form modularization, so that the whole assembly is facilitated, the discharge elements 212 are convenient to line, namely, the lines can be attached to the connecting plate 25, and the lines are convenient to fix. Alternatively, the electrostatic module 20 includes two connection plates 25, the two connection plates 25 are disposed opposite to each other at intervals along the width direction of the collecting plate 221, and a plurality of discharge elements 212 are disposed on the opposite surfaces of the two connection plates 25. The discharge element 212 is a discharge tip, for example, the discharge element 212 may be connected to a positive high voltage. In addition, the discharge elements 212 may also be serrations provided on the connection plate 25.

In one embodiment, the electrostatic module 20 further includes two mounting side plates 26, the mounting side plates 26 extend along a distribution direction of the static electrode 21 and the collector 22, the static electrode 21 and the collector 22 are located between the two mounting side plates 26, and the two mounting side plates 26 are distributed along a width direction of the repelling polar plate 222. The mounting side plate 26 protects the static electrode 21 and the collector 22 inside, and prevents the static electrode 21 and the collector 22 from being damaged by collision. To ensure the safety of the entire module, the mounting side plates 26 are optionally grounded.

Referring again to fig. 5, in one embodiment, the second heating member 42 is mounted to the mounting side plate 26. Specifically, the second heating member 42 is inserted into the mounting side plate 26. Specifically, the second heating member 42 extends along the distribution direction of the plurality of collecting pole plates 221 and is inserted through the plurality of collecting pole plates 221 and the two mounting side plates 26, and the connecting section 422 of the second heating member 42 is located outside one of the mounting side plates 26. After the second heating member 42 is mounted on the mounting side plate 26, it is equivalent to indirectly fix the collecting electrode plate 221 to the mounting side plate 26.

In one embodiment, the connecting rods are mounted to the mounting side plates 26, and in particular, the connecting rods are plugged into the mounting side plates 26. Specifically, the connecting rods extend along the distribution direction of the plurality of repulsive polar plates 222 and are inserted through the plurality of repulsive polar plates 222 and the two mounting side plates 26. After the connecting rod is mounted on the mounting side plate 26, it is equivalent to indirectly fixing the repelling pole plate 222 to the mounting side plate 26.

Further, the electrostatic module 20 further includes two mounting frames 27, the two mounting frames 27 are respectively disposed at two ends of the mounting side plate 26, an end portion of the mounting side plate 26 is connected to an end portion of the mounting frame 27, and the two mounting frames 27 and the two side plates are connected to form a space for accommodating the electrostatic electrode 21 and the collector 22. In this embodiment, the connecting plate 25 is mounted on a mounting frame 27.

The invention also provides a range hood.

In the embodiment of the present invention, as shown in fig. 1, the range hood includes a housing 10, the housing 10 is provided with a smoke suction port and a smoke exhaust port, a smoke collection cavity 11 is formed in the housing 10, and the smoke collection cavity 11 is communicated with the smoke suction port and the smoke exhaust port. Specifically, be equipped with the fan in the collection cigarette chamber 11, optionally, this fan is centrifugal fan for the wind pressure is bigger, and the oil absorption cigarette effect is better. Under the action of the centrifugal fan, the cooking fume is sucked into the fume collecting cavity 11 from the fume suction port and is discharged from the fume discharge port.

The range hood in the embodiment of the invention can be a side-suction range hood, a top-suction range hood, a side-suction and top-suction mixed range hood and the like. The side suction and the top suction in this embodiment are defined relative to the flow direction of the smoke, the smoke generated by cooking initially moves upward, and when the smoke suction port is a side suction smoke suction port, the upward flowing smoke changes direction to flow laterally and flows into the smoke suction port. When the smoking port is a top smoking port, the smoke moving upwards directly flows to the smoking port without changing the direction laterally.

In an embodiment, the range hood includes the above electrostatic module 20, and the electrostatic module 20 is located in the smoke collection cavity 11. Because the range hood adopts all the technical schemes of all the embodiments, the range hood at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

Wherein the electrostatic module 20 is disposed on the housing 10, and specifically, the mounting frame 27 and/or the mounting side plate 26 of the electrostatic module 20 is fixed with the housing 10. The electrostatic module 20 may be fixed to the housing 10 by screws, or the electrostatic module 20 may be supported by providing a support step on the inner surface of the housing 10. Alternatively, the peripheral side of the electrostatic module 20 is in contact with the inner surface of the housing 10, and the smoke collection chamber 11 is partitioned into two upper and lower chambers, which are communicated with each other through the ionization space formed in the electrostatic module 20 and the collection space. Such that substantially all of the flue gas passes through the ionization space and the collection space. Specifically, the mounting frame 27 of the electrostatic module 20 abuts against the inner surface of the housing 10.

The static electrode 21 in the static module 20 is located below the collector 22, the collecting electrode plate 221 and the repelling electrode plate 222 both extend in the up-down direction, and the flue gas flows from the bottom up and passes through the static electrode 21 and the collector 22 in sequence.

Referring to fig. 6 to 11 in combination, fig. 6 to 11 show a catalytic decomposition module 30 disposed in the range hood. In an embodiment, the range hood further includes a catalytic decomposition module 30, and the catalytic decomposition module 30 is disposed in the smoke collection cavity 11. Optionally, the catalytic decomposition module 30 is a porous structure, the peripheral side of the catalytic decomposition module 30 is abutted to the inner wall of the smoke collection cavity 11, so as to separate the smoke collection cavity 11 into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are communicated through the hole of the catalytic decomposition module 30. Therefore, basically all the smoke is discharged after being sufficiently catalytically decomposed by the catalytic decomposition module 30, and the kitchen air is completely purified.

As shown in fig. 9, in an embodiment, the catalytic decomposition module 30 includes a catalytic unit 31 having a porous structure and an outer frame 32 installed outside the catalytic unit 31, the catalytic unit 31 performs a catalytic decomposition function, and the holes formed inside the catalytic unit 31 form a channel for flowing the flue gas. The catalytic unit 31 may be a honeycomb, fin, or corrugated structure. The outer frame 32 has a ring shape, the outer frame 32 fixes the catalytic unit 31, and the outer frame 32 is mounted on the housing 10 or the electrostatic module 20.

In the above, the catalytic unit 31 includes a catalyst and an adsorbent having an adsorption function, the catalyst includes a metal oxide including one or a copolymer of at least two of MnOx, CeOx, Co3O4, FeOx, CuxO, NiO, TiO2, and a noble metal deposited on a surface of the metal oxide; the noble metal comprises one or at least two of Pt, Pd, Au, Ru, Rh and Ag. The adsorbent comprises one or at least two of activated alumina, activated carbon, hydroxyapatite and diatomite.

The catalytic unit 31 comprises a substrate and a catalytic layer arranged on the substrate, and optionally, the thickness of the catalytic layer is more than 5mm, so as to avoid poor catalytic effect caused by over-thinness of the catalytic layer. The catalytic layer comprises the catalyst and the adsorbent. The substrate may be a thermally conductive structure such as a honeycomb ceramic or a silicon carbide ceramic, or the like.

Referring to fig. 10, the range hood further includes a heating element 40, and the heating element 40 is disposed in the smoke collection chamber 11 and is used for heating the catalytic decomposition module 30. In some embodiments, the heating element 40 is heated in direct contact with the catalytic decomposition module 30, for example, the heating element 40 is in contact with an outer surface of the catalytic decomposition module 30, or the heating element 40 is embedded within the catalytic decomposition module 30. Because the heating element 40 is in contact with the catalytic decomposition module 30 and directly heats the catalytic decomposition module 30, the heat loss of the heating element 40 is less, the energy utilization rate is high, and the catalyst can be rapidly heated to the catalytic temperature by the heating element 40, thereby reducing the emission of harmful substances. In some embodiments, the heating element 40 is spaced apart from the catalytic decomposition module 30 to transfer heat through air. In addition, since the substrate has a heat conductive structure, heat generated from the heating member 40 can be rapidly transferred to the catalyst layer attached to the substrate, so that the catalyst layer is rapidly heated to a catalytic temperature.

The heating element 40 may be a pattern or structure of resistance wire heating, microwave heating, electromagnetic wave heating and exchange, convective heat transfer, or the like. Alternatively, the power of the heating member 40 may be 10W to 500W, and the heating temperature may be 20 ℃ to 400 ℃.

The material of the heating member 40 may be a single body or an alloy of metal materials such as Al, Au, Fe, Zr, Cr, Cu, Ce, Ti, etc. having excellent heat conductivity, or the material of the heating member 40 may be a ceramic material having a heat transfer function, etc.

The number of the heating members 40 may be plural in order to enhance the heating effect. In addition, in order to increase the heating range of the heating member 40 so that the catalytic decomposition module 30 can be rapidly heated, in one embodiment, the heating member 40 is bent. By providing the heating member 40 in a bent shape, the entire length of the heating member 40 becomes long, and the heatable range is larger. Alternatively, heating element 40 may have a U-shaped, pie-shaped, circular, spiral, or the like configuration. Alternatively, the heating element 40 is disposed in a ring shape along the circumferential extension of the catalytic decomposition module 30, so that the heat generated by the ring-shaped heating element 40 is intensively transferred toward the inside of the ring, thereby better heating the catalyst. Of course, in other embodiments, the heating element 40 may be disposed adjacent to a side of the catalytic decomposition module 30 in a ring shape along the edge of the side. In addition, the heating member 40 may have a straight bar shape.

In the embodiment of the invention, by arranging the catalytic decomposition module 30 and the heating element 40, the catalytic decomposition module 30 can better exert the catalytic decomposition performance under the condition that the heating element 40 heats the catalytic decomposition module, effectively adsorb oil fume odor molecules, realize the catalytic purification of non-methane total hydrocarbon gas molecules in oil fume and completely purify kitchen air. In addition, the adsorption effect of the static module 20 is combined, the emission index of PM2.5 is effectively reduced, and the overall environment of a kitchen and air is improved.

Referring to fig. 10 and 11, in an embodiment, a mounting gap is formed between the electrostatic module 20 and the catalytic decomposition module 30, and the heating member 40 includes a first heating member 41 located in the mounting gap. By arranging the first heating member 41 between the electrostatic module 20 and the catalytic decomposition module 30, the electrostatic module 20 and the catalytic decomposition module 30 can be heated at the same time, the heat of the first heating member 41 is fully utilized, and the waste of energy is reduced.

Alternatively, the catalytic decomposition module 30 and the first heating member 41 are provided on the flue gas output side of the electrostatic module 20. Specifically, the catalytic decomposition module 30, the first heating member 41, and the electrostatic module 20 are sequentially disposed from top to bottom. Because the catalytic decomposition module 30 is arranged at the smoke output side of the electrostatic module 20, the smoke firstly passes through the electrostatic module 20, and after the oil smoke particles are adsorbed by the electrostatic module 20, the smoke flows into the catalytic decomposition module 30, so that the problem that the activity of the catalytic layer cannot be well released due to the fact that the oil smoke particles are attached to the catalytic decomposition module 30 is avoided.

The first heating member 41 may also be shaped in a bent structure, such as a circular, U-shaped, or spiral structure, etc. In one embodiment, the first heating member 41 includes two heating pipes 411 disposed in parallel, and the heating pipes 411 extend along the length direction of the catalytic decomposition module 30. In this embodiment, the catalytic decomposition module 30 extends along the left-right direction to form a long strip, so the heating pipes 411 also extend along the left-right direction, and the two heating pipes 411 are arranged at intervals along the width direction of the catalytic decomposition module 30. The heating area can be increased by arranging the two heating pipes 411, and the heating efficiency is improved. In addition, the ends of the two heating pipes 411 are connected such that the first heating member 41 has a U-shape.

In one embodiment, the catalytic decomposition module 30 and the first heating member 41 are respectively connected to the housing 10, the catalytic decomposition module 30 and the housing 10 may be connected by screws, or a support protrusion is provided on the housing 10 to support the catalytic decomposition module 30. Similarly, a mounting protrusion may be provided on the housing 10 to support the first heating member 41, or a catching groove into which an end portion of the first heating member 41 protrudes may be provided on the housing 10. In addition, the first heating member 41 may also be disposed on the electrostatic module 20, for example, the first heating member 41 is disposed on the mounting frame 27 of the electrostatic module 20 and supported by the mounting frame 27, and the mounting frame 27 may be disposed with a limiting protrusion for limiting the movement of the first heating member 41.

In one embodiment, the heating element 40 further includes a second heating element 42 inserted into the collecting portion. The second heating element 42 is the second heating element 42 in the electrostatic module 20, and the detailed structure is not described herein. In this embodiment, when the heat generated by the second heating member 42 flows upward, the excessive heat is absorbed by the catalytic decomposition module 30, so as to heat the catalytic decomposition module 30.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An electrostatic module, comprising:

the static electrode is used for ionizing oil stains in the flue gas;

the heating element is used for heating the collector, and the heating temperature of the heating element is higher than the smoke point temperature of the oil stain;

the heating element is inserted in the collector;

the collector comprises a plurality of collecting polar plates and a plurality of repelling polar plates, and the collecting polar plates and the repelling polar plates are alternately arranged;

the hole edge of the abdicating hole is in contact with the heating element, an annular gap is formed between the hole edge of the abdicating hole and the heating element, the hole edge of the abdicating hole is provided with a butt flanging, and the butt flanging wraps the heating element; alternatively, the first and second electrodes may be,

an annular gap is formed between the hole edge of the avoidance hole and the heating element, the hole edge of the avoidance hole is in contact with the heating element, a butt flanging is arranged at the hole edge of the avoidance hole, and the butt flanging wraps the heating element;

the static electrode comprises ionization sections and a discharge element arranged between the two ionization sections;

2. The electrostatic module of claim 1, further comprising a first connecting rod inserted through the plurality of repulsive plates along the arrangement direction of the repulsive plates to connect the repulsive plates, the first connecting rod being spaced apart from the collecting plates; and/or the presence of a gas in the gas,

3. The electrostatic module of claim 1 wherein the heating element comprises a heating tube including two intervening segments disposed in parallel and a connecting segment connecting the two intervening segments, the intervening segments being interleaved with the collector.

4. The electrostatic module according to any of claims 1 to 3, further comprising a connection plate extending in an arrangement direction of the plurality of collecting plates, the connection plate being provided with a plurality of the discharge elements.

5. The electrostatic module of claim 1, further comprising two mounting side plates extending along a direction of distribution of the static electrode and the collector, the static electrode and the collector being positioned between the two mounting side plates;

the heating member is installed at the installation side plate.

6. A range hood, comprising:

a housing having a smoke collection chamber; and

the electrostatic module of any of claims 1-5, located within the smoke collection chamber.