An oil fume filter for a cooking appliance

Abstract

The utility model provides a kind of oil fume filter for cooking utensil, to solve the low filtering efficiency of existing technology, the problem of insufficient contact between airflow and filter material on cooking utensil in prior art.A kind of oil fume filter for cooking utensil, comprising: shell, is equipped with air inlet and air outlet;Filter material is arranged in the shell;Filter cavity is arranged between the air inlet and the air outlet, the filter cavity is equipped with baffle, the baffle divides the filter cavity into front filter cavity and rear filter cavity;And the first filter hole is immersed in the filter material;And power device is used to provide power.The utility model constructs an efficient oil fume wet type filter system.Oil fume airflow is forced to pass through filter channel immersed in filter material, realizes sufficient gas-liquid contact and mixing, to realize efficient filtration.

Description

Technical Field

[0001] This utility model belongs to the technical field of kitchen cooking appliance fume treatment equipment, specifically relating to an oil fume filter for cooking appliances. Background Technology

[0002] Air fryers, ovens, and other cooking appliances generate significant amounts of fumes and high-temperature exhaust gases when cooking oily foods. Direct emission of these gases not only pollutes the indoor environment and negatively impacts user experience, but long-term inhalation can also harm health. Current technologies integrate simple filtration structures into some cooking appliances, such as activated carbon or metal filters. However, these filtration methods have significant shortcomings: activated carbon filters have limited adsorption capacity, are easily saturated, and are difficult to regenerate, requiring frequent replacement; metal filters can only intercept larger particles and are ineffective at purifying aerosols, odors, and harmful gases in cooking fumes. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0003] This utility model provides an oil fume filter for cooking appliances, which aims to solve the problems of low filtration efficiency and insufficient contact between airflow and filter material in existing oil fume filters for cooking appliances.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fume filter for cooking appliances, comprising:

[0006] The housing is equipped with an air inlet and an air outlet;

[0007] The filter material is disposed inside the housing;

[0008] A filter chamber is disposed between the air inlet and the air outlet. The air inlet end of the filter chamber is connected to the air inlet, and the air outlet end of the filter chamber is connected to the air outlet. A partition is provided inside the filter chamber, dividing the filter chamber into a front filter chamber near the air inlet end and a rear filter chamber near the air outlet end. The lower part of the partition is provided with a first filter hole connecting the front filter chamber and the rear filter chamber, and the first filter hole is immersed in the filter material.

[0009] A power unit is used to provide power for the flow of gas from the inlet to the outlet.

[0010] A further solution: the air outlet of the filter chamber is provided with a second filter hole.

[0011] Based on the above technical solution: by setting a second filter hole, the airflow can further play a filtering role when it flows out of the filter chamber.

[0012] A further embodiment: The rear filter chamber is provided with a guide section for extending the airflow path. The guide section divides the rear filter chamber into a front channel and a rear channel. The air inlet end of the front channel is connected to the first filter hole, the air outlet end of the front channel is connected to the air inlet end of the rear channel, and the air outlet end of the rear channel is connected to the second filter hole.

[0013] Based on the above technical solution: by setting a guide section in the rear filter chamber, the rear filter chamber is divided into a front channel and a rear channel with longer paths, which can effectively extend the residence time of oil fumes in the filter chamber, which helps particles settle or collide and condense with the side wall of the filter chamber, thereby further improving the filtration effect.

[0014] A further embodiment: the guide section is an S-shaped plate, the upper end of the S-shaped plate bends backward toward the second filter hole, the lower end of the S-shaped plate bends forward toward the lower end of the partition, and the air outlet of the front channel and the air inlet of the rear channel are connected on the upper side of the S-shaped plate.

[0015] Based on the above technical solution: the use of S-shaped guide plates can create a longer, more meandering flow path and induce vortices, further enhancing airflow disturbance and improving filtration effect. At the same time, the bending design of the S-shaped plates helps with particle sedimentation and the collision, condensation and separation of oil droplets.

[0016] A further solution: The lower end of the S-shaped plate is integrally formed or fixedly connected to the lower end of the partition.

[0017] A further embodiment: the air outlet of the filter chamber is provided with two sets of second filter holes, one upper and one lower, with the lower set of second filter holes at least partially immersed in the filter material.

[0018] Based on the above technical solution: by setting two sets of second filter holes, the purified gas flowing out of the filter channel can flow out through the upper set of second filter holes, thereby increasing the airflow efficiency; the lower set of second filter holes allows the filter material inside the shell to enter the filter chamber and flow, thereby improving the filtration effect.

[0019] A further embodiment: The housing is provided with a surrounding plate, which together with the side wall and bottom wall of the housing forms the filter chamber; the air inlet is located on the front side wall of the housing; the surrounding plate includes an upper surrounding plate extending from front to back and a rear surrounding plate extending downward from the rear end of the upper surrounding plate; the partition extends downward from the upper surrounding plate.

[0020] A further embodiment: the upper side of the housing is sealed with a top cover, the air outlet is located on the top cover, and the power unit includes a fan located at the air outlet.

[0021] Based on the above technical solution: the sealed connection between the top cover and the housing ensures the airtightness of the device and prevents oil fume leakage. The power unit (fan) is located above the air outlet, and the airflow is driven by negative pressure suction.

[0022] A further option: the filter material includes at least one of water, chemical purifier, and biological detergent.

[0023] Based on the above technical solutions, users can flexibly choose the appropriate option according to their purification needs. For example, alkaline detergents can neutralize the acidic components and grease in cooking fumes, while chemical purifiers or biological detergents can specifically decompose organic pollutants.

[0024] A further option is to add a catalyst or enzyme preparation to the filter material to promote the decomposition of oil fumes.

[0025] And / or, the housing is provided with a purification device located between the air outlet and the second filter hole, the purification device being used to purify the gas after passing through the filter; the purification device is an activated carbon adsorption device, a plasma generator, or a photocatalytic device.

[0026] Based on the above technical solutions: adding catalysts (such as photocatalysts) or enzymes to the filter material can introduce catalytic oxidation or biodegradation mechanisms on top of physical filtration and chemical washing, achieving a more thorough decomposition of harmful organic matter in cooking fumes and improving purification efficiency. Adding an independent purification device can further treat the gas after pre-wet filtration, such as further adsorbing residual odors, volatile organic compounds, or ultrafine particulate matter, achieving multi-stage purification and ensuring the quality of emitted air. Activated carbon adsorption is suitable for removing odors and some organic matter; plasma generators can efficiently decompose various pollutants; photocatalytic devices can continuously degrade organic matter under ultraviolet light irradiation. Users can choose the configuration according to cost and performance requirements.

[0027] The beneficial effects of this utility model are as follows:

[0028] This invention constructs a highly efficient wet fume filtration system by setting up a filter with a specific airflow channel and using a filter medium. The filter chamber is divided by a partition, and the first filter hole connecting the front and rear filter chambers is immersed in the filter medium. This forces the airflow entering the front filter chamber to pass through the filter medium below the liquid surface before entering the rear filter chamber. This design forces the airflow to contact and mix with the filter medium, thereby improving the filtration efficiency of particulate matter and soluble pollutants in the fume, and thus efficiently removing particulate matter, grease, and some gaseous pollutants from the fume. By incorporating a power unit, the airflow path from the inlet to the filter chamber and then from the outlet is made smoother, further enhancing the filtration efficiency. This device can be integrated into cooking appliances or used as a standalone accessory. It offers high purification efficiency and can flexibly adapt to different purification needs by selecting different filter media or adding a post-treatment module. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an oil fume filter for cooking appliances according to this utility model.

[0031] Figure 2 This is a schematic diagram of the exploded structure of an oil fume filter.

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of an oil fume filter.

[0033] Figure 4 This is a schematic diagram of the internal structure of the shell.

[0034] Explanation of the labels in the diagram:

[0035] 1-Shell; 11-Air inlet; 12-Air outlet; 13-First slot; 14-Second slot; 15-Third slot; 16-Abutting part; 17-Top cover; 18-Power unit; 21-Enclosure; 211-Upper enclosure; 212-Rear enclosure; 213-Front filter chamber; 214-Rear filter chamber; 215-Second filter hole; 22-Partition; 221-First filter hole; 3-Flow guide; 4-Filter material. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1 to 4 As shown, this embodiment provides an oil fume filter for cooking appliances, including:

[0038] The housing 1 is provided with an air inlet 11 and an air outlet 12; the air inlet 11 can be connected to the fume exhaust outlet of the cooking appliance, which can be an air fryer, an oven, etc.; the housing 1 can be installed inside the cooking appliance or used by being externally connected to the cooking appliance.

[0039] Filter material 4 is disposed inside the housing 1;

[0040] A filter chamber is disposed between the air inlet 11 and the air outlet 12. The air inlet end of the filter chamber is connected to the air inlet 11, allowing airflow containing oil fumes to enter the filter chamber from the air inlet 11. The air outlet end of the filter chamber is connected to the air outlet 12. A partition 22 is provided inside the filter chamber, dividing the filter chamber into a front filter chamber 213 near the air inlet end and a rear filter chamber 214 near the air outlet end. The lower part of the partition 22 is provided with a first filter hole 221 connecting the front filter chamber 213 and the rear filter chamber 214, and the first filter hole 221 is immersed in the filter material 4.

[0041] The power unit 18 is used to provide power for the flow of gas from the inlet 11 to the outlet 12.

[0042] like Figure 2 and Figure 3 As shown, under the action of the power unit 18, the airflow entering the front filter chamber 213 from the air inlet 11 passes through the first filter hole 221 submerged below the liquid surface and then enters the rear filter chamber 214. The airflow comes into full contact with the filter material 4, thereby filtering out particulate matter and other particles in the airflow.

[0043] The air outlet of the filter chamber is provided with a second filter hole 215. Both the first filter hole 221 and the second filter hole 215 can be configured as mesh. The first filter hole 221 is immersed in the filter material 4, and the second filter hole 215 is at least partially immersed in the filter material 4, thereby allowing the filter material 4 in the filter chamber to flow with the filter material 4 in the housing 1, thus improving the filtration effect.

[0044] As a preferred implementation method, such as Figure 2 and Figure 3 As shown, to improve the purification effect, a guide section 3 for extending the airflow path can be provided in the rear filter chamber 214. The guide section 3 divides the rear filter chamber 214 into a front channel and a rear channel. The air inlet end of the front channel is connected to the first filter hole 221, the air outlet end of the front channel is connected to the air inlet end of the rear channel, and the air outlet end of the rear channel is connected to the second filter hole 215. By providing the guide section 3, when the airflow flows out of the first filter hole 221, it cannot flow directly out of the second filter hole 215, but must flow along the airflow path guided by the guide section 3, thereby extending the airflow path and time, so that the particles in the airflow can be more fully absorbed by the filter material 4, or the particles can settle and condense, thereby improving the filtration effect.

[0045] The guide section 3 can specifically be an S-shaped plate or an arc-shaped plate. Preferably, the upper end of the S-shaped plate bends backward and toward the second filter hole 215, and the lower end of the S-shaped plate bends forward and toward the lower end of the partition 22. The air outlet of the front channel and the air inlet of the rear channel are connected on the upper side of the S-shaped plate to effectively extend the airflow path, causing larger particles to settle into the filter material 4, thereby making the discharged airflow cleaner. The lower end of the S-shaped plate is preferably integrally formed or fixedly connected to the lower end of the partition 22.

[0046] like Figure 2 and Figure 3 As shown, in one specific embodiment, the housing 1 is provided with a surrounding plate 21, which, together with the side wall and bottom wall of the housing 1, forms the filter chamber. The air inlet 11 is disposed on the front side wall of the housing 1, and the air inlet end of the filter chamber covers the air inlet 11. The surrounding plate 21 includes an upper surrounding plate 211 extending horizontally rearward from the front side wall of the housing 1, and a rear surrounding plate 212 extending downward from the rear end of the upper surrounding plate 211. The upper surrounding plate 211 and the rear surrounding plate 212 preferably have a smooth arc transition, and the two can be integrally formed or fixedly connected by welding or other means. The surrounding plate 21 and the partition plate 22 can also be integrally formed or fixedly connected. The second filter hole 215 is disposed on the rear surrounding plate 212. To facilitate airflow, two sets of second filter holes 215 can be opened on the rear panel 212, one upper and one lower, and ensure that at least part of the opening of the lower set of second filter holes 215 is submerged in the filter material 4, so that the filter material 4 in the filter chamber can exchange flow with the filter material 4 in the housing 1.

[0047] In some specific implementations, such as Figure 3 and Figure 4 As shown, the housing 1 is provided with an installation part, on which the enclosure 21 and the partition 22 are both disposed. Preferably, the installation part includes a first slot 13 located on the bottom wall of the housing 1, a second slot 14 located on the right and left walls of the housing 1 and engaging with the rear enclosure 212, and a third slot 15 located on the right and left walls of the housing 1 and engaging with the partition 22. The installation part also includes several abutting parts 16 located on the right wall of the housing 1 and abutting against the upper side of the upper enclosure 211. When the enclosure 21 is installed in place, the front end of the upper enclosure 211 abuts against the front side wall of the housing 1, and the lower end of the rear enclosure 212 is engaged in the first slot 13. The left and right sides of the rear enclosure 212 are respectively engaged in the corresponding second slots 14, and the partition 22 is engaged in the third slot 15. The lower end of the partition 22 can be fixedly connected to the bottom wall of the housing 1.

[0048] like Figure 1 and Figure 2 As shown, a top cover 17 is sealed to the upper side of the housing 1, and the air outlet 12 is disposed on the top cover 17. The power unit 18 is preferably an axial flow fan or a centrifugal fan, which is disposed above the air outlet 12. When the fan is working, a negative pressure is generated inside the device, which draws in oil fumes from the air inlet 11 and drives them to complete the entire filtration process before discharging them from the air outlet 12.

[0049] In some specific embodiments, the filter material 4 is one of the core components of the purification function. It can be water, used to rinse and separate grease while dissolving soluble pollutants; or an alkaline detergent (such as a diluted edible alkali solution) to neutralize the acidity of the oil fumes and saponify the grease; or a specialized chemical purifier or biological detergent to specifically decompose organic pollutants. To further improve the efficiency of oil fume decomposition, catalysts or specific enzyme preparations can be added to the filter material 4. For example, photocatalyst suspended particles can be added to the alkaline detergent, and UV lamps can be integrated into the inner wall or channels of the device to construct a wet photocatalytic oxidation system. This system can both filter out suspended particles and decompose oil fumes, resulting in cleaner airflow with less odor.

[0050] In some specific embodiments, the device of this invention may further include a purification device. This purification device is disposed inside the housing 1, located in the airflow path between the air outlet 12 and the second filter hole 215. Its function is to further purify the gas that has already been treated by the pre-wet filter and filter material 4, such as adsorbing residual odors or decomposing trace amounts of harmful gases. The purification device may be one of a honeycomb activated carbon adsorption layer, a plasma generator, or a photocatalytic device, which the user can select according to their needs.

[0051] Working principle explanation:

[0052] When the oil fume filter of this utility model is in operation, the power unit 18 (fan) starts, generating suction at the air outlet 12. Oil fumes generated by cooking appliances are drawn into the housing 1 through the air inlet 11 under the action of pressure difference, first entering the pre-filter chamber 213 of the filter. Subsequently, the airflow is forced through the first filter hole 221 immersed in the filter material 4. During this process, the high-speed airflow is broken into a large number of tiny bubbles, making full contact with the filter material 4. Oil particles and solid particles in the oil fume are trapped, dissolved, or chemically reacted by the liquid. The pre-purified bubble flow carries a small amount of liquid droplets into the post-filter chamber 214. In the curved channel formed by the guide section 3, the airflow path is extended, which facilitates the separation of larger liquid droplets carried in the gas and liquid from the gas due to collision, gravity, etc. Finally, the gas passes through the second filter hole 215 on the enclosure 21, and is finally discharged as clean air from the air outlet 12 by the power unit 18. The entire process achieves efficient multi-stage purification of oil fumes.

[0053] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A fume filter for cooking appliances, characterized in that, include: The housing is equipped with an air inlet and an air outlet; The filter material is disposed inside the housing; A filter chamber is disposed between the air inlet and the air outlet. The air inlet end of the filter chamber is connected to the air inlet, and the air outlet end of the filter chamber is connected to the air outlet. A partition is provided inside the filter chamber, dividing the filter chamber into a front filter chamber near the air inlet end and a rear filter chamber near the air outlet end. The lower part of the partition is provided with a first filter hole connecting the front filter chamber and the rear filter chamber, and the first filter hole is immersed in the filter material. A power unit is used to provide power for the flow of gas from the inlet to the outlet.

2. The fume filter for cooking appliances according to claim 1, characterized in that, The air outlet of the filter chamber is provided with a second filter hole.

3. A fume filter for cooking appliances according to claim 2, characterized in that, The rear filter chamber is provided with a guide section for extending the airflow path. The guide section divides the rear filter chamber into a front channel and a rear channel. The air inlet end of the front channel is connected to the first filter hole, the air outlet end of the front channel is connected to the air inlet end of the rear channel, and the air outlet end of the rear channel is connected to the second filter hole.

4. A fume filter for cooking appliances according to claim 3, characterized in that, The flow guide is an S-shaped plate, the upper end of which bends backward toward the second filter hole, and the lower end of which bends forward toward the lower end of the partition. The air outlet of the front channel and the air inlet of the rear channel are connected on the upper side of the S-shaped plate.

5. A fume filter for cooking appliances according to claim 4, characterized in that, The lower end of the S-shaped plate is integrally formed or fixedly connected to the lower end of the partition.

6. A fume filter for cooking appliances according to claim 2, characterized in that, The air outlet of the filter chamber is provided with two sets of second filter holes, one upper and one lower, with the lower set of second filter holes being at least partially immersed in the filter material.

7. A fume filter for cooking appliances according to claim 6, characterized in that, The housing is provided with a surrounding plate, which together with the side wall and bottom wall of the housing forms the filter chamber; the air inlet is provided on the front side wall of the housing; the surrounding plate includes an upper surrounding plate extending from front to back and a rear surrounding plate extending downward from the rear end of the upper surrounding plate; the partition extends downward from the upper surrounding plate.

8. A fume filter for cooking appliances according to claim 1, characterized in that, The upper side of the housing is sealed with a top cover, the air outlet is located on the top cover, and the power unit includes a fan located at the air outlet.

9. A fume filter for cooking appliances according to claim 1, characterized in that, The filter material includes at least one of water, chemical purifier, and biological detergent.

10. A fume filter for cooking appliances according to claim 1, characterized in that, The filter material also contains catalysts or enzymes to promote the decomposition of oil fumes. And / or, the housing is provided with a purification device located between the air outlet and the second filter hole, the purification device being used to purify the gas after passing through the filter; the purification device is an activated carbon adsorption device, a plasma generator, or a photocatalytic device.

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