Oil smoke purification device

Abstract

The utility model relates to an oil smoke purification device which comprises a case, the case is in a cuboid shape, a rear end opening is formed in the rear end of the case, a front end opening is formed in the front end of the case, the rear end opening and the front end opening are respectively provided with a gas dispersing cover, the gas dispersing covers are provided with densely-distributed air holes, and a plurality of ultraviolet lamp tubes are arranged on the inner wall of the case. An electric field ventilation grid and an adsorption ventilation grid are arranged in the machine box, the ultraviolet lamp tube is arranged between the electric field ventilation grid on the rear side and the gas dissipation cover on the rear side, the electric field ventilation grid is provided with a U-shaped frame, an opening of the U-shaped frame faces downwards, a plurality of electrode grid pieces distributed at intervals are arranged on the inner wall of the U-shaped frame, and all the electrode grid pieces are arranged in the vertical direction. The electrode grid plates charged with positive electricity are called positive electrode grid plates, the electrode grid plates charged with negative electricity are called negative electrode grid plates, and the positive electrode grid plates and the negative electrode grid plates are alternately arranged. According to the utility model, the lampblack is purified by adopting ultraviolet decomposition and electrostatic adsorption modes, and a filter element is not needed, so that a relatively high purification effect can be kept.

Description

Technical Field

[0001] This utility model relates to the field of oil fume purification technology, and specifically to an oil fume purification device. Background Technology

[0002] Cooking fumes contain a large number of harmful substances, such as alcohols, ketones, hydrocarbons, fatty acids, aromatic compounds, acrolein, volatile nitrosamines, and benzo[a]pyrene. If cooking fumes are emitted directly without treatment, they will harm the health of people in the surrounding area. Therefore, it is necessary to install a fume purification device at the fume emission outlet.

[0003] Oil fume purification devices generally employ physical filtration, which involves installing a filter element. As the oil fumes pass through the filter element, oil droplets are adsorbed, thus reducing the concentration of harmful substances in the emitted fumes. However, when dealing with large volumes of oil fumes, the fine pores of the filter element are easily clogged with oil droplets, reducing its filtration efficiency and resulting in unsatisfactory filtration. Furthermore, frequent filter replacements lead to excessively high consumable costs. Utility Model Content

[0004] The purpose of this invention is to provide an oil fume purification device that uses ultraviolet light decomposition and electrostatic adsorption to purify oil fumes without the need for a filter element, thereby maintaining a high purification effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An oil fume purification device includes a rectangular enclosure with a rear opening and a front opening. Both the rear and front openings are equipped with diffuser hoods, each with numerous ventilation holes. The inner wall of the enclosure houses several ultraviolet lamps. An electric field ventilation grid and an adsorption ventilation grid are located inside the enclosure. The ultraviolet lamps are positioned between the rear electric field ventilation grid and the rear diffuser hood. The electric field ventilation grid has a U-shaped frame with its opening facing downwards. The inner wall of the U-shaped frame has multiple spaced electrode grids, each arranged vertically. Electrode grids carrying a positive charge are called positive electrode grids, and those carrying a negative charge are called negative electrode grids. The electrode grid is called the negative electrode grid. The positive electrode grid and the negative electrode grid are arranged alternately, with a gap between them. The shape of the adsorption vent grid is the same as that of the electric field vent grid, but the adsorption vent grid is not charged. The bottom wall of the chassis is provided with four raised channel steels. The four raised channel steels are arranged in the transverse direction and in the longitudinal direction. The electric field vent grid and the adsorption vent grid are each matched with two raised channel steels. The electric field vent grid / adsorption vent grid is placed on the front and rear edges of the two matched raised channel steels respectively. The bottom edge of the raised channel steel is provided with an oil passage hole. The bottom wall of the chassis is provided with an oil drain port and several support feet.

[0007] Specifically, the spacing between two adjacent electrode grids is 8mm-12mm.

[0008] Specifically, the inner wall of the chassis is equipped with three sets of ultraviolet lamps, which are arranged vertically.

[0009] Specifically, each raised channel steel is composed of two L-shaped steel sheets, with folded edges on both sides of the L-shaped steel sheets, and oil passage holes located on the bottom edge of the L-shaped steel sheets.

[0010] Specifically, a control box is installed on the outer wall of the chassis, and electrical components are installed inside the control box. The electric field ventilation grid and the ultraviolet lamp are both electrically connected to the electrical components.

[0011] Specifically, the horizontal cross-section of the support foot is L-shaped.

[0012] Specifically, the side wall of the electric field ventilation grid is provided with a circuit board, the side wall of the chassis is provided with a discharge resistor, and the inner end of the discharge resistor is provided with a contact spring, which keeps the conductive contacts of the circuit board pressed against the circuit board.

[0013] Specifically, the control box is equipped with a display screen and operation indicator lights.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The rear opening connects to the exhaust pipe outlet (not shown in the figure). The flue gas passes through the densely packed fine holes of the diffuser hood, thus dispersing and evenly entering the rear opening. The flue gas first passes through three sets of ultraviolet lamps. When the ultraviolet light emitted by the lamps irradiates the cooking fumes, it decomposes oxygen molecules in the air to produce free oxygen (active oxygen), which in turn generates ozone. Ozone has a strong oxidizing effect on organic matter and can effectively remove cooking fumes and their odors. Furthermore, the ultraviolet light and ozone perform a photolytic oxidation reaction on the cooking fumes, converting them into water and carbon dioxide.

[0016] The flue gas passing through the ultraviolet lamp passes through an electric field ventilation grid. The inner wall of the grid's U-shaped frame is equipped with multiple spaced-apart electrode plates. Electrode plates carrying a positive charge are called positive electrode plates, and those carrying a negative charge are called negative electrode plates. These positive and negative electrode plates are arranged alternately. An electric field is formed between two adjacent positive and negative electrode plates. When the fumes pass through this electric field, the oil droplets become electrostatically charged.

[0017] The flue gas flows forward through the electric field permeable grid and passes through the adsorption permeable grid. The shape of the adsorption permeable grid is the same as that of the electric field permeable grid, but the adsorption permeable grid is uncharged. When electrostatically charged oil droplets in the flue gas pass through the grid plates of the adsorption permeable grid, they will be adsorbed onto the grid plates, thereby further removing the oil droplets from the flue gas.

[0018] To prevent sparks from generated by the circuit board (containing multiple capacitors) of the electric field ventilation grid after the fume purification device is shut down, which could lead to a fire, a discharge resistor 16 is installed on the side wall of the chassis. The inner end of the discharge resistor is equipped with a contact spring, which keeps it against the conductive contacts of the circuit board. In this way, the electricity stored in the capacitors of the circuit board can be discharged in time to avoid sparks and fire.

[0019] After the oil droplets in the flue gas are adsorbed and enriched on the grid of the adsorption and ventilation grid, they will flow down the grid to the bottom wall of the inner cavity of the casing, and then flow through the oil passage to the oil outlet and be discharged through the oil outlet.

[0020] This invention uses ultraviolet decomposition and electrostatic adsorption to purify cooking fumes, significantly reducing harmful components in the emitted smoke. The three sets of ultraviolet lamps and the electric field ventilation grid can operate continuously, ensuring long-term purification effectiveness. The purification effect will not be reduced due to oil droplets clogging the filter pores, and there is no need to replace the filter. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A view of the fume purification device;

[0023] Figure 2 A view of the fume purification device;

[0024] Figure 3 This is an internal view of the fume purification device;

[0025] Figure 4 for Figure 3 A magnified view of a portion of the view;

[0026] Figure 5 A view of the electric field ventilation grid;

[0027] Figure 6 This is a view of the chassis base plate.

[0028] In the picture:

[0029] 11. Rear end opening; 12. Front end opening; 13. Vent hood; 14. Oil drain port; 15. Support foot; 16. Discharge resistor; 161. Contact spring;

[0030] 2. Ultraviolet lamp;

[0031] 3. Electric field ventilation grid; 31. U-shaped frame; 32. Electrode grid; 33. Circuit board;

[0032] 4. Elevating channel steel; 41. L-shaped steel sheet; 411. Oil passage hole;

[0033] 5. Control box;

[0034] 6. Adsorption and ventilation grille. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] See Figures 1 to 6 An oil fume purification device includes a chassis, which is rectangular in shape. The chassis has a rear opening 11 at the rear end and a front opening 12 at the front end. Both the rear opening 11 and the front opening 12 are provided with a diffuser hood 13, which has a dense array of ventilation holes.

[0037] See Figure 3 The inner wall of the chassis is equipped with several ultraviolet lamps 2. The chassis also contains an electric field ventilation grid 3 and an adsorption ventilation grid 6. The ultraviolet lamps 2 are positioned between the rear electric field ventilation grid 3 and the rear diffuser 13. See [link / details]. Figure 5 The electric field permeable grid 3 has a U-shaped frame 31 with its opening facing downwards. Multiple spaced electrode grids 32 are arranged on the inner wall of the U-shaped frame 31, each arranged vertically. Electrode grids 32 carrying a positive charge are called positive electrode grids, and those carrying a negative charge are called negative electrode grids; positive and negative electrode grids are arranged alternately. A gap is left between the positive and negative electrode grids. The adsorption permeable grid 6 has the same shape as the electric field permeable grid 3, but it is uncharged.

[0038] See Figure 6 The bottom wall of the chassis is provided with four raised channel steels 4, all arranged laterally and longitudinally. Two raised channel steels 4 are matched with each of the electric field ventilation grid 3 and the adsorption ventilation grid 6. The electric field ventilation grid 3 / adsorption ventilation grid 6 are placed on the front and rear edges of their respective matched raised channel steels 4 (in combination). Figure 3 , Figure 6 An oil passage hole 411 is provided on the bottom edge of the raised channel steel 4. An oil drain port 14 is provided on the bottom wall of the chassis, and several support feet 15 are provided on the bottom wall of the chassis.

[0039] Specifically, the spacing between two adjacent electrode grids 32 is 8mm-12mm.

[0040] Specifically, see Figure 3The inner wall of the chassis is equipped with three sets of ultraviolet lamps 2, which are arranged vertically.

[0041] Specifically, see Figure 6 Each of the raised channel steels 4 is composed of two L-shaped steel sheets 41. Both sides of the L-shaped steel sheet 41 are provided with folded edges, and the oil passage hole 411 is located on the bottom edge of the L-shaped steel sheet 41.

[0042] Specifically, a control box 5 is provided on the outer wall of the chassis, and electrical components are provided inside the control box 5. The electric field ventilation grid 3 and the ultraviolet lamp tube 2 are both electrically connected to the electrical components.

[0043] Specifically, the horizontal cross-section of the support leg 15 is L-shaped.

[0044] Specifically, see Figures 2 to 4 The side wall of the electric field ventilation grid 3 is provided with a circuit board 33, the side wall of the chassis is provided with a discharge resistor 16, and the inner end of the discharge resistor 16 is provided with a contact spring 161, which holds the conductive contact against the circuit board 33.

[0045] Specifically, the control box 5 is equipped with a display screen and operation indicator lights on its surface.

[0046] The working principle of this utility model is as follows:

[0047] The rear opening 11 connects to the exhaust pipe outlet (not shown in the figure). The flue gas passes through the densely packed fine holes of the diffuser hood 13, thus dispersing and evenly entering the rear opening 11. The flue gas first passes through three sets of ultraviolet lamps 2. When the ultraviolet light emitted by the ultraviolet lamps 2 irradiates the cooking fumes, it decomposes oxygen molecules in the air to produce free oxygen (active oxygen), which in turn generates ozone. Ozone has a strong oxidizing effect on organic matter and can effectively remove cooking fumes and their odors. Furthermore, the ultraviolet light and ozone perform a photolytic oxidation reaction on the cooking fumes, converting them into water and carbon dioxide.

[0048] The flue gas passing through the ultraviolet lamp 2 passes through the electric field ventilation grid 3. The inner wall of the U-shaped frame 31 of the electric field ventilation grid 3 is provided with multiple spaced electrode grids 32. Electrode grids 32 carrying a positive charge are called positive electrode grids, and those carrying a negative charge are called negative electrode grids. Positive and negative electrode grids are arranged alternately. An electric field is formed between two adjacent positive and negative electrode grids. When the oil fume passes through this electric field, the oil droplets within it become electrostatically charged.

[0049] The flue gas flows forward through the electric field permeable grid 3 and passes through the adsorption permeable grid 6. The shape of the adsorption permeable grid 6 is the same as that of the electric field permeable grid 3, but the adsorption permeable grid 6 is not charged. When electrostatic oil droplets in the flue gas pass through the grid plates of the adsorption permeable grid 6, they will be adsorbed on the grid plates, thereby further removing the oil droplets in the flue gas.

[0050] To prevent sparks from being generated by the circuit board 33 (equipped with multiple capacitors) of the electric field ventilation grid 3 after the fume purification device is shut down, which could cause a fire, a discharge resistor 16 is provided on the side wall of the chassis. The discharge resistor 16 has a contact spring 161 at its inner end. The contact spring 161 keeps the conductive contacts of the circuit board 33 against it. In this way, the electricity stored in the capacitors of the circuit board 33 can be discharged in time to avoid sparks and fire.

[0051] After the oil droplets in the flue gas are adsorbed and enriched on the grid plate of the adsorption and ventilation grid 6, they will flow down along the grid plate to the bottom wall of the inner cavity of the machine, and then flow through the oil passage 411 to the oil outlet 14, and be discharged through the oil outlet 14.

[0052] This invention uses ultraviolet decomposition and electrostatic adsorption to purify oil fumes, which can greatly reduce the harmful components in the emitted flue gas. The three sets of ultraviolet lamps 2 and the electric field ventilation grid 3 can maintain long-term operation, ensuring the purification effect for a long time. The purification effect will not be reduced due to oil droplets clogging the filter pores, and there is no need to replace the filter.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An oil fume purification device, characterized in that: The system includes a rectangular chassis with a rear opening and a front opening. Both the rear and front openings are equipped with ventilation hoods containing numerous vents. The inner wall of the chassis houses several ultraviolet lamps. The chassis also contains an electric field ventilation grid and an adsorption ventilation grid. The ultraviolet lamps are positioned between the rear electric field ventilation grid and the rear ventilation hood. The electric field ventilation grid has a U-shaped frame with its opening facing downwards. The inner wall of the U-shaped frame has multiple spaced electrode grids, all vertically aligned. Electrode grids carrying a positive charge are called positive electrode grids, and those carrying a negative charge are called negative electrode grids. The negative electrode grid and positive electrode grid are alternately arranged, with a gap between them. The shape of the adsorption vent grid is the same as that of the electric field vent grid, but the adsorption vent grid is not charged. The bottom wall of the chassis is provided with four raised channel steels, which are arranged horizontally and vertically. The electric field vent grid and the adsorption vent grid are each matched with two raised channel steels. The electric field vent grid / adsorption vent grid is placed on the front and rear edges of the two matched raised channel steels. The bottom edge of the raised channel steel is provided with an oil passage hole. The bottom wall of the chassis is provided with an oil drain port and several support feet.

2. The oil fume purification device according to claim 1, characterized in that: The spacing between two adjacent electrode grids is 8mm-12mm.

3. The oil fume purification device according to claim 1, characterized in that: The inner wall of the chassis is equipped with three sets of ultraviolet lamps, which are arranged vertically.

4. The oil fume purification device according to claim 1, characterized in that: Each raised channel steel is composed of two L-shaped steel sheets. Both sides of the L-shaped steel sheet are provided with folded edges, and the oil passage hole is located on the bottom edge of the L-shaped steel sheet.

5. The oil fume purification device according to claim 1, characterized in that: The outer wall of the chassis is equipped with a control box, which contains electrical components. The electric field ventilation grid and the ultraviolet lamp are both electrically connected to the electrical components.

6. The oil fume purification device according to claim 1, characterized in that: The horizontal cross-section of the support foot is L-shaped.

7. The oil fume purification device according to claim 1, characterized in that: The side wall of the electric field ventilation grid is equipped with a circuit board, the side wall of the chassis is equipped with a discharge resistor, and the inner end of the discharge resistor is equipped with a contact spring, which keeps the conductive contacts of the circuit board pressed against the circuit board.

8. The oil fume purification device according to claim 1, characterized in that: The control box is equipped with a display screen and operation indicator lights.

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