Kitchen fume emptying device
By designing a combination structure of curved mesh plate, curved oil lubricating plate and multi-layer filter in the range hood, the problems of poor oil filtration effect and troublesome disassembly of range hood are solved, achieving more efficient oil fume filtration and convenient cleaning process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-24
AI Technical Summary
Existing range hoods suffer from poor oil filtration, low oil accumulation, and cumbersome filter removal.
A kitchen fume extraction device was designed, including a suction box and a fan box. It adopts a combination structure of curved mesh plate, curved oil sliding plate, long oil box and multi-layer filter screen. After the oil fume enters the suction box through the curved mesh plate, some of the oil slides down the curved oil sliding plate into the long oil box. After passing through the multi-layer filter screen, the oil drips onto the L-shaped platform and is collected in the long oil box. The curved mesh plate and filter screen are easy to clean when disassembled.
It improves the oil fume filtration effect, simplifies the process of disassembling and cleaning the filter screen, and enhances the ease of use and cleaning efficiency of the range hood.
Smart Images
Figure CN224033876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of range hood technology, and in particular to a kitchen fume exhaust device. Background Technology
[0002] A range hood, also known as a cooking hood, is a kitchen appliance used to purify the kitchen environment. Installed above the stove, it quickly removes cooking fumes and harmful oil fumes from the stove, venting them outdoors to reduce pollution, purify the air, and provide safety features such as protection against poisoning and explosions. However, range hoods also have drawbacks, including the inconvenience of cleaning the filtered oil and disassembling the filter screen, and sometimes ineffective oil removal. Utility Model Content
[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a kitchen fume extraction device that solves problems such as poor oil filtration, low oil accumulation, and cumbersome filter removal.
[0004] A kitchen fume extraction device according to this utility model includes a suction box and a fan box. The top of the suction box is flat, and the lower surface is a concave arc surface. The suction box has a downwardly extending oil box chamber at the bottom rear side. The front wall of the oil box chamber is an outward-opening door. A long oil box is installed inside the oil box chamber. The upper half of the lower surface of the suction box is a fixed panel, and the lower half is a detachable arc-shaped mesh plate. A U-shaped slot is provided on the upper surface of the fixed panel near the bottom edge. A slot is provided on the top wall of the oil box chamber above the outward-opening door. The top of the arc-shaped mesh plate is inserted into the U-shaped slot, and the bottom edge is locked in the slot. An arc-shaped oil lubricating plate is fixedly installed inside the suction box. The bottom edge of the oil plate is located at the top of the oil box chamber, and the top edge is located above the fixed panel. The bottom of the fan box is fixed to the middle of the top of the suction box and is connected to it. The fan box contains a suction fan. The suction box below the fan box has an inclined channel. The bottom edge of the inclined channel has an L-shaped platform. The L-shaped platform is located above the top edge of the arc-shaped oil plate. The top wall of the suction box on the front side of the fan box has a removable sealing plate. The front side wall of the suction box below the sealing plate has a triangular mounting block. Multiple filter screens are placed at the installation position of the sealing plate at the top of the suction box, and the bottom edges of the filter screens are stacked on the L-shaped platform, and the top edges are placed on the triangular mounting blocks and fixed with bolts.
[0005] In some embodiments of this utility model, the bottom edge of the arc-shaped mesh plate is provided with a retaining strip, which is engaged in a retaining groove.
[0006] In some other embodiments of this utility model, the fixed panel is provided with arc-shaped flow channels at both ends of the U-shaped slot, and the bottom end of the arc-shaped flow channels extends to the top of the long strip oil box inside the oil box chamber.
[0007] In some other embodiments of this utility model, the angle between the tangent of the lower half of the arc-shaped lubricating plate and the horizontal plane is not less than 45°.
[0008] In some other embodiments of this utility model, the arc-shaped lubricating plate is provided with an upwardly extending anti-overflow limiting plate at the top edge, and the L-shaped platform is located to the left of the anti-overflow limiting plate.
[0009] In some other embodiments of this utility model, the lower surface edge of the sealing plate is provided with a rubber ring, and the sealing plate is fixed to the top wall of the suction box with bolts.
[0010] In this invention, after the oil fumes enter the suction box from the curved mesh plate, they impact the lower surface of the curved oil-lubricating plate. Some of the oil slides down the curved oil-lubricating plate and is collected in the long oil box. The oil fumes continue to flow and pass through multiple layers of filter screens for oil absorption. The oil then flows down the filter screens to the L-shaped platform and drips onto the top edge of the curved oil-lubricating plate. It then slides down the upper surface of the curved oil-lubricating plate and is collected in the long oil box. The curved mesh plate and filter screens are easy to disassemble and are easy to clean. Attached Figure Description
[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0012] Figure 1 This is a schematic diagram of the structure of a kitchen fume exhaust device proposed in this utility model.
[0013] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.
[0014] Figure 3 This is a schematic diagram of the upper surface structure of the fixed panel proposed in this utility model.
[0015] In the diagram: 1. Curved mesh plate; 11. Clip edge; 2. Fixed panel; 21. U-shaped slot; 22. Curved flow channel; 3. Long strip oil box; 31. Outward opening door; 4. Curved lubricating plate; 41. Anti-overflow limit plate; 5. Filter screen; 51. Triangular mounting block; 52. Sealing plate; 6. Inclined channel; 7. Exhaust fan. Detailed Implementation
[0016] 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.
[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0018] Reference Figure 1-3 A kitchen fume extraction device includes a suction box and a fan box. The suction box has a flat top and a concave lower surface. The suction box has a downwardly extending oil box chamber at its rear bottom. The front wall of the oil box chamber is an outward-opening door 31. A long oil box 3 is installed inside the oil box chamber. The upper half of the lower surface of the suction box is a fixed panel 2, and the lower half is a detachable curved mesh plate 1. A U-shaped slot 21 is provided on the upper surface of the fixed panel 2 near the bottom edge. A slot is provided on the top wall of the oil box chamber above the outward-opening door 31. The top of the curved mesh plate 1 is inserted into the U-shaped slot 21, and the bottom edge is secured in the slot. An arc-shaped lubricating plate 4 is fixed inside the suction box. The bottom edge of the arc-shaped lubricating plate 4... Above the top and top edge of the oil box chamber, above the fixed panel 2, the bottom of the fan box is fixed to the middle position of the top of the suction box and is connected. The fan box is equipped with a suction fan 7. The suction box below the fan box is equipped with an inclined channel 6. The bottom edge of the inclined channel 6 is equipped with an L-shaped platform. The L-shaped platform is located above the top edge of the arc-shaped lubricating plate 4. The top wall of the suction box on the front side of the fan box is equipped with a removable sealing plate 52. The front side wall of the suction box below the sealing plate 52 is equipped with a triangular mounting block 51. Multiple filter screens 5 are placed at the installation position of the sealing plate 52 at the top of the suction box, and the bottom edges of the filter screens 5 are stacked on the L-shaped platform and the top edges are placed on the triangular mounting block 51 and fixed with bolts.
[0019] When the exhaust system is activated, the negative suction draws in the fumes from the curved mesh plate 1. Most of the fumes directly impact the curved oil-lubricating plate 4, where they adhere without separation and slide down into the long oil box 3. As the fumes pass through the filter screen 5, they absorb a significant amount of oil, which flows down the filter screen 5, accumulates on the L-shaped platform, and drips onto the top edge of the curved oil-lubricating plate 4. The oil then slides down the upper surface of the curved oil-lubricating plate 4 into the long oil box 3 for collection. After passing through the inclined channel 6, the oil enters the fan box. Some of the oil that adheres to the fan blades drips onto the inclined channel 6 and flows onto the L-shaped platform, where it drips again.
[0020] When removing the curved mesh plate 1, push the curved mesh plate 1 upward (the U-shaped slot 21 is quite deep) so that the bottom edge of the curved mesh plate 1 is disengaged from the slot, and then pull out the curved mesh plate 1.
[0021] Remove the sealing plate 52 and remove the filter screen (do this once every 1-2 years). Then remove the filter screen 5.
[0022] The bottom edge of the curved mesh plate 1 is provided with a retaining strip 11, which is engaged in a retaining groove. This makes the engagement more secure and facilitates disassembly.
[0023] The fixed panel 2 has arc-shaped flow channels 22 at both ends of the U-shaped slot, and the bottom end of the arc-shaped flow channels 22 extends above the elongated oil box 3 inside the oil box chamber. Drops on the fixed panel 2 flow to both sides and are collected by flowing down the arc-shaped flow channels 22.
[0024] The angle between the tangent of the lower half of the arc-shaped lubricating plate 4 and the horizontal plane is no less than 45°. This allows the newly introduced oil fumes to be adsorbed on the arc-shaped lubricating plate 4 and slide down smoothly without dripping.
[0025] The arc-shaped lubricating plate 4 has an upwardly extending anti-overflow limiting plate 41 at its top edge, and the L-shaped platform is located to the left of the anti-overflow limiting plate 41. This prevents excessive oil dripping into the chamber and avoids overflowing outwards from the top edge of the arc-shaped lubricating plate 4.
[0026] The sealing plate 52 has an adhesive ring on its lower surface edge, and the sealing plate 52 is fixed to the top wall of the suction box with bolts. The sealing effect is good, and the bolts are securely tightened.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A kitchen fume exhaust device, characterized in that: The device includes a suction box and a fan box. The top of the suction box is flat, and the lower surface is a concave arc surface. The suction box has an oil box chamber extending downward at the bottom rear side. The front wall of the oil box chamber is an outward-opening door (31). The oil box chamber contains a long strip oil box (3). The upper half of the lower surface of the suction box is a fixed panel (2), and the lower half is a detachable arc-shaped mesh plate (1). The upper surface of the fixed panel (2) is provided with a U-shaped slot (21) near the bottom edge. The oil box chamber has a slot on the top wall above the outward-opening door (31). The top of the arc-shaped mesh plate (1) is inserted into the U-shaped slot (21), and the bottom edge is locked in the slot. An arc-shaped lubricating plate (4) is fixedly installed inside the suction box. The bottom edge of the arc-shaped lubricating plate (4) is at the top of the oil box chamber. The top edge is above the fixed panel (2). The bottom of the fan box is fixed to the middle position of the top of the suction box and is connected. The fan box is equipped with a suction fan (7). The suction box below the fan box is equipped with an inclined channel (6). The bottom edge of the inclined channel (6) is equipped with an L-shaped platform. The L-shaped platform is above the top edge of the arc-shaped lubricating plate (4). The top wall of the suction box on the front side of the fan box is equipped with a removable sealing plate (52). The front side wall of the suction box below the sealing plate (52) is equipped with a triangular mounting block (51). Multiple filter screens (5) are placed at the installation position of the sealing plate (52) at the top of the suction box. The bottom edge of the filter screens (5) is stacked on the L-shaped platform and the top edge is placed on the triangular mounting block (51) and fixed with bolts.
2. The kitchen fume exhaust device according to claim 1, characterized in that: The bottom edge of the arc-shaped mesh plate (1) is provided with a retaining strip (11), which is engaged in the retaining groove.
3. The kitchen fume exhaust device according to claim 1, characterized in that: The fixed panel (2) has arc-shaped flow channels (22) at both ends of the U-shaped slot, and the bottom end of the arc-shaped flow channels (22) extends to the top of the long strip oil box (3) inside the oil box chamber.
4. A kitchen fume exhaust device according to claim 1, characterized in that: The angle between the tangent of the lower half of the arc-shaped lubricating plate (4) and the horizontal plane is not less than 45°.
5. A kitchen fume exhaust device according to claim 1, characterized in that: The arc-shaped lubricating plate (4) has an upwardly extending anti-overflow limiting plate (41) at the top edge, and the L-shaped platform is located on the left side of the anti-overflow limiting plate (41).
6. A kitchen fume exhaust device according to claim 1, characterized in that: The sealing plate (52) has a rubber ring on the lower surface edge, and the sealing plate (52) is fixed to the top wall of the suction box with bolts.