A range hood

Abstract

The application discloses a range hood and relates to the technical field of range hoods. At present, a large amount of oil stains adsorbed in the range hood is difficult to clean. The range hood comprises a base, the base is fixed on a wall surface, a power cavity and a smoke collecting cavity are formed in the base, the power cavity and the smoke collecting cavity are arranged at intervals in a direction away from the wall surface, the top of the smoke collecting cavity is connected with an exhaust pipe, the smoke collecting cavity is connected with an exhaust and discharge pipe, the exhaust and discharge pipe is in the shape of a truncated fan ring, both ends of the exhaust and discharge pipe are installed on the base, and a plurality of exhaust and discharge holes are arranged on the side wall of the exhaust and discharge pipe close to the inner ring. The exhaust and discharge structure is arranged in the power cavity and the smoke collecting cavity and is used for forming a negative pressure environment in the smoke collecting cavity. The cleaning structure is used for cleaning the inner wall of the exhaust and discharge pipe, and the gear sliding structure is used for pushing the cleaning structure. In the range hood, the gear sliding structure and the cleaning structure solve the problem that a large amount of oil stains adsorbed in the range hood is difficult to clean.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and more particularly to a range hood. Background Technology

[0002] A range hood is a kitchen exhaust system used during cooking. The fumes or steam used in cooking are absorbed from the kitchen. Kitchen fumes can affect skin condition and damage the respiratory system. With prolonged exposure, the probability and severity of injury increase, so it is necessary to install a range hood.

[0003] After a period of use, a large amount of grease will accumulate inside the range hood, which can easily pollute the home environment and reduce the range hood's smoke extraction efficiency. Therefore, cleaning the grease inside the range hood is an important step to maintain its normal operation and extend its service life. The cleaning method for range hoods is as follows: First, ensure the range hood is turned off and the power and gas supply are disconnected for safety. Depending on the specific model and brand of the range hood, disassemble any movable or detachable parts, such as the range hood cover and filter. Follow the instruction manual to remove them correctly and prevent damage. Use a damp cloth or sponge with a small amount of neutral detergent to gently wipe the surface of the range hood casing, avoiding water from entering the internal circuitry. Wipe clean with water and dry with a dry cloth. Use a long-handled brush or soft brush with an appropriate amount of neutral detergent or a dedicated ventilation duct cleaner to carefully clean the internal ventilation ducts of the range hood. Finally, rinse thoroughly with water, allow to dry, and reassemble. Because of the difficulty in removing grease buildup, the process is labor-intensive and messy. Furthermore, some traditional range hoods may drip oil, resulting in a poor user experience. Summary of the Invention

[0004] In view of the problems mentioned above, the purpose of this invention is to provide a range hood that solves the problem of cleaning the large amount of oil stains adsorbed inside the range hood, and also solves the problem of oil dripping in traditional range hoods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A range hood, including

[0007] A base is fixed to a wall. The base has a power chamber and a smoke collection chamber. The power chamber and the smoke collection chamber are spaced apart in a direction away from the wall. The top of the smoke collection chamber is connected to a smoke exhaust pipe. The smoke collection chamber is connected to a smoke extraction pipe. The smoke extraction pipe is a truncated fan-shaped ring. Both ends of the smoke extraction pipe are installed on the base. Multiple extraction holes are provided on the side wall of the smoke extraction pipe near the inner ring.

[0008] An exhaust structure for creating a negative pressure environment in the smoke collection chamber, wherein the exhaust structure is disposed within the power chamber and the smoke collection chamber;

[0009] A cleaning structure for cleaning the inner wall of a drain pipe, the cleaning structure including a ball table and a ball crown disposed inside the drain pipe, and a plurality of brushes evenly distributed on the surface of the ball table and the ball crown, the ball table and the ball crown being located at the same center, and the brushes close to the inner wall of the drain pipe being in contact with the inner wall of the drain pipe.

[0010] The gear sliding structure used to drive the cleaning structure includes an internal gear on the inner wall of the extraction tube away from the inner side of the fan-shaped annulus, a sliding gear inside the extraction tube, and a transmission gear passing through the extraction tube. The ball platform and the ball crown are respectively disposed on the top and bottom surfaces of the sliding gear. The center of the ball crown is located at the central axis of the sliding gear. The transmission gear, the fan-shaped extraction tube, and the internal gear are located at the same central axis. The sliding gear meshes with the transmission gear and the internal gear respectively.

[0011] As a further description of the above technical solution:

[0012] A driven gear is fixedly connected to the top wall of the transmission gear, and the central axis of the driven gear coincides with the central axis of the transmission gear.

[0013] As a further description of the above technical solution:

[0014] The included angle between the cross sections at both ends of the exhaust pipe is 45°-90°. A servo motor is installed on the side wall of the smoke collection chamber. A drive gear is installed at the output end of the servo motor. The driven gear meshes with the drive gear at 90°.

[0015] As a further description of the above technical solution:

[0016] An arc-shaped groove is provided on the outer shell of the extraction pipe near the central axis. The two side walls of the arc-shaped groove are in contact with the transmission gear. The arc-shaped groove is connected to the extraction hole. A leak-proof plate is attached to the inner side wall of the extraction pipe. The leak-proof plate connects the extraction hole and the arc-shaped groove.

[0017] As a further description of the above technical solution:

[0018] The side walls on both sides of the smoke collection chamber are provided with slots for connecting the exhaust pipe. Two fixing rings are fixedly connected to the side walls on both sides of the base. The two fixing rings are respectively fixed to the outer shell of the exhaust pipe. The transmission gear and the driven gear both pass through the fixing rings.

[0019] As a further description of the above technical solution:

[0020] The bottom of the smoke collection chamber is provided with two inclined surfaces that slope downwards toward the central axis of the base. The central axis of the bottom of the base is provided with a slot that connects to the smoke collection chamber and an oil collection box is inserted into the slot. A handle is installed on the side of the oil collection box away from the base.

[0021] As a further description of the above technical solution:

[0022] The exhaust structure includes an exhaust motor installed in the power chamber, an impeller box installed in the smoke collection chamber, an exhaust impeller installed in the impeller box, and a filter screen installed at the air inlet of the impeller box. The output end of the exhaust motor passes through the side wall between the power chamber and the smoke collection chamber, and the exhaust motor is connected to the exhaust impeller.

[0023] As a further description of the above technical solution:

[0024] The bottom wall of the table is in close contact with the internal gear and the driven gear, and the top wall of the spherical crown is in close contact with the internal gear and the driven gear.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In this invention, the servo motor is started to rotate the drive gear, thereby rotating the driven gear and the transmission gear. The sliding gear, which meshes with the internal gear and the driven gear respectively, rotates on its own axis and also revolves around the transmission gear. This drives the cleaning structure, which is fixedly connected to the sliding gear, to clean the inner wall of the exhaust pipe, thus solving the problem of the difficulty in cleaning the large amount of oil stains adsorbed in the range hood.

[0027] 2. In this invention, by setting a leak-proof plate that connects the exhaust hole and the arc groove, the oil stains concentrated on the inner wall of the bottom of the exhaust pipe are difficult to leak out from the exhaust hole and the arc groove. The oil stains will be concentrated in the oil collection box of the smoke collection chamber under the action of gravity, thus solving the problem of oil dripping in the range hood.

[0028] 3. In this invention, by opening the exhaust hole and the arc-shaped groove on the side wall of the exhaust pipe near the inner side of the ring, the fumes will not drift out from the exhaust hole and the arc-shaped groove under the action of gravity after the user finishes using the range hood, thus avoiding the situation where the fumes drift out from the smoke inlet. Attached Figure Description

[0029] Figure 1 This is a front structural diagram of the present invention.

[0030] Figure 2 This is a structural diagram of the disassembled exhaust pipe of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of the base after cross-section of the present invention.

[0032] Figure 4This is a schematic diagram of the structure of the base and oil collection box after cross-section of the base of the present invention.

[0033] Figure 5 This is a schematic diagram of the extraction pipe, cleaning structure, and gear sliding structure after vertical sectioning of the extraction pipe, cleaning structure, and gear sliding structure of the present invention.

[0034] Figure 6 This is a schematic diagram of the gear sliding structure of the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of the extraction tube and the fixing ring of the present invention.

[0036] Figure 8 This is a schematic diagram of the extraction pipe, cleaning structure, and gear sliding structure after cross-section of the extraction pipe of the present invention.

[0037] Figure 9 This is the invention Figure 8 Enlarged view of the structure of section A in the middle.

[0038] Legend:

[0039] 10. Base; 11. Power chamber; 12. Smoke collection chamber; 13. Slot; 14. Slot; 15. Oil collection box; 16. Fixing ring; 17. Exhaust pipe; 20. Drainage pipe; 21. Drainage hole; 22. Leak-proof plate; 23. Arc groove; 30. Gear sliding structure; 31. Sliding gear; 32. Internal gear; 33. Transmission gear; 34. Driven gear; 35. Driving gear; 36. Servo motor; 37. Cleaning structure; 371. Ball table; 372. Ball crown; 373. Brush body; 40. Drainage structure; 41. Filter screen; 42. Drainage impeller; 43. Exhaust motor; 44. Impeller box. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-9A range hood includes: a base 10 fixed to a wall; a power chamber 11 and a smoke collection chamber 12 formed within the base 10; a smoke collection chamber 12 connected to the top of the smoke collection chamber 12 by an exhaust pipe 17; the power chamber 11 and the smoke collection chamber 12 being spaced apart in a direction away from the wall; the smoke collection chamber 12 being connected to an exhaust pipe 20; the exhaust pipe 20 being fan-shaped; both ends of the exhaust pipe 20 being mounted on the base 10; and, for ease of installation and use, the included angle of the cross-sections at both ends of the exhaust pipe 20 being 45°-90°; and multiple exhaust holes 21 provided on the sidewall of the exhaust pipe 20 near the inner side of the fan shape. The exhaust structure 40 inside the cavity 12 is used to create a negative pressure environment in the smoke collection cavity 12. The exhaust structure 40 includes an exhaust motor 43 installed in the power cavity 11, an impeller box 44 installed in the smoke collection cavity 12, an exhaust impeller 42 installed in the impeller box 44, and a filter screen 41 installed at the air inlet of the impeller box 44. The output end of the exhaust motor 43 passes through the side wall between the power cavity 11 and the smoke collection cavity 12 and is connected to the exhaust impeller 42. When the exhaust motor 43 is started, the range hood can start to absorb the oil fumes. The exhaust impeller 42 in the base 10 starts to work and moves the absorbed oil fumes into the exhaust pipe 17.

[0042] A cleaning structure 37 for cleaning the inner wall of the extraction pipe 20 includes a ball table 371 and a ball crown 372 respectively disposed near the top and bottom surfaces of the sliding gear 31, and multiple brushes 373 evenly distributed on the surfaces of the ball table 371 and the ball crown 372. To ensure the brushes 373 clean the inner wall of the extraction pipe 20, the brushes 373 near the inner wall of the extraction pipe 20 are in contact with the inner wall. Therefore, rotating and sliding the cleaning structure 37 can clean the inner wall of the extraction pipe 20. A gear sliding structure 30 for rotating and sliding the cleaning structure 37 includes an internal gear 32 disposed on the inner wall away from the inner ring of the extraction pipe 20, a sliding gear 31 disposed within the extraction pipe 20, and a penetrating gear 373 near the inner wall of the extraction pipe 20. The transmission gear 33 is located on the inner side wall of the near-ring type. The center of the spherical crown 372 is located at the central axis of the sliding gear 31. The spherical platform 371 and the spherical crown 372 are located at the same center. Therefore, the cleaning structure 37 will not shake when the sliding gear 31 is rotated. The transmission gear 33, the fan-shaped exhaust pipe 20 and the internal gear 32 are located at the same central axis. The sliding gear 31 meshes with the transmission gear 33 and the internal gear 32 respectively. The gear on the transmission gear 33 is an external gear, and the gear on the internal gear 32 is an external gear. Therefore, when the transmission gear 33 is rotated, the sliding gear 31 will rotate. Since the internal gear 32 is stationary, the sliding gear 31 meshing with the internal gear 32 will also revolve around the transmission gear 33 while rotating.

[0043] A servo motor 36 is installed on the side wall of the smoke collection chamber 12. A drive gear 35 is installed at the output end of the servo motor 36, and a driven gear 34 meshes with the drive gear 35 at a 90° angle. Starting the servo motor 36 drives the rotation of the drive gear 35 and the driven gear 34. Since the driven gear 34 is fixedly connected to the transmission gear 33, the transmission gear 33 can be rotated by starting the servo motor 36. Traditionally, after a period of use, range hoods accumulate a large amount of grease, easily polluting the home environment and reducing the range hood's oil extraction capacity. Therefore, it is essential to clean the grease inside the range hood promptly to maintain its normal function and extend its lifespan. However, grease buildup is extremely difficult to remove, requiring a large amount of work and creating a mess. Furthermore, some traditional range hoods drip oil, resulting in a poor user experience. Therefore, a new type of range hood is designed to solve this problem. When the user... When using this range hood, the exhaust motor 43 starts the exhaust impeller 42, and the fumes are drawn into the range hood through the exhaust hole 21. After the user finishes using the range hood, because the exhaust hole 21 is located on the side wall of the exhaust pipe 20 near the inner side of the ring, the fumes are difficult to escape from the exhaust hole 21 under the action of gravity, thus preventing the fumes from escaping from the exhaust pipe 20 through the smoke inlet. After the range hood is finished using, a lot of oil stains easily adhere to the inner wall of the exhaust pipe 20. When the servo motor 36 is started, the transmission gear 33 rotates, which drives the sliding gear 31 to rotate on its own axis and revolve around the transmission gear 33 inside the exhaust pipe 20. During the rotation and revolution of the sliding gear 31, the brush body 373 cleans the inner wall of the exhaust pipe 20. This cleaning method is simple and convenient, and solves the problem of the difficulty in cleaning the large amount of oil stains adsorbed in the range hood.

[0044] Specifically, such as Figure 1-3 As shown, slots 13 are provided on the side walls of both sides of the smoke collection chamber 12. The slots 13 are used to connect the smoke collection chamber 12 to the exhaust pipe 20. Two fixing rings 16 are fixedly connected to the side walls of both sides of the base 10. The two fixing rings 16 are fixed to the outer side wall of the exhaust pipe 20. The transmission gear 33 and the driven gear 34 pass through the fixing rings 16 respectively. The fixing rings 16 can make the exhaust pipe 20 more securely fixed to the base 10.

[0045] Specifically, such as Figure 2-4 As shown, the base 10 is provided with a slot 14, the top of the slot 14 is connected to the bottom of the smoke collection chamber 12, and an oil collection box 15 is inserted into the slot 14. A handle is installed on the side of the oil collection box 15 away from the base 10. During the operation of the cleaning structure 37, the revolution of the sliding gear 31 will move the washed oil stains into the smoke collection chamber 12. The bottom of the smoke collection chamber 12 is provided with two inclined surfaces that slope downwards towards the middle. Therefore, the oil stains that fall onto the inclined surfaces will move into the oil collection box 15 under the action of gravity. The user can remove the oil collection box 15 by the handle and clean the oil collection box 15.

[0046] Specifically, such as Figure 5-7 As shown, to facilitate the adsorption of oil fumes, the plane angle formed by the axis of the exhaust hole 21 and the axis of the exhaust pipe 20 is 0°-45°. The exhaust pipe 20 has an arc-shaped groove 23 and an exhaust hole 21 on its side wall near the central axis. In contrast, the traditional downward-facing air intake is prone to airflow escape in the middle of the stove. After the user finishes using the range hood, the oil fumes will not drift out from the exhaust hole 21 under the action of gravity, thus avoiding the situation where oil fumes drift out from the smoke inlet. The arc-shaped groove 23, together with the transmission gear 33, passes through the exhaust pipe 20. The two side walls of the arc-shaped groove 23 are in close contact with the transmission gear 33, and the driven gear 34 abuts against the outer wall of the exhaust pipe 20. Therefore, when the servo motor 36 is started, the driven gear 34 and the transmission gear 33 will not wobble during the rotation.

[0047] Specifically, such as Figure 8-9 As shown, the bottom wall of the ball table 371 is in close contact with the internal gear 32 and the driven gear 34, and the top wall of the ball crown 372 is in close contact with the internal gear 32 and the driven gear 34. Therefore, the sliding gear 31 will not shake during its rotation and revolution. The arc groove 23 connects to the exhaust hole 21. A leak-proof plate 22 is attached to the inner wall of the exhaust pipe 20. The leak-proof plate 22 connects the exhaust hole 21 and the arc groove 23. The setting of the leak-proof plate 22 makes it difficult for the oil stains concentrated on the bottom inner wall of the exhaust pipe 20 to leak out from the exhaust hole 21 and the arc groove 23. The oil stains will be concentrated in the oil collection box 15 in the smoke collection chamber 12 under the action of gravity. The oil stains that remain on the bottom of the inner wall of the exhaust pipe 20 can be pushed into the oil collection box 15 by the sliding cleaning structure 37, which solves the problem of oil dripping in the range hood.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A range hood, comprising a base (10) fixed to a wall, characterized in that, The base (10) is provided with a power chamber (11) and a smoke collection chamber (12). The power chamber (11) and the smoke collection chamber (12) are spaced apart in the direction away from the wall. The top of the smoke collection chamber (12) is connected to the smoke exhaust pipe (17). The smoke collection chamber (12) is connected to the exhaust pipe (20). The exhaust pipe (20) is in the shape of a truncated fan ring. Both ends of the exhaust pipe (20) are installed on the base (10). The exhaust pipe (20) has multiple exhaust holes (21) on the side wall near the inner ring. Also includes: An exhaust structure (40) for creating a negative pressure environment in the smoke collection chamber (12) is provided in the power chamber (11) and the smoke collection chamber (12); A cleaning structure (37) for cleaning the inner wall of the drain pipe (20) includes a ball table (371) and a ball crown (372) disposed in the drain pipe (20), and a plurality of brushes (373) evenly distributed on the surface of the ball table (371) and the ball crown (372). The ball table (371) and the ball crown (372) are located at the same center. The brushes (373) close to the inner wall of the drain pipe (20) are in contact with the inner wall of the drain pipe (20). The gear sliding structure (30) used to drive the cleaning structure (37) includes an internal gear (32) opened on the inner wall of the exhaust pipe (20) away from the inner side of the fan-shaped inner side, a sliding gear (31) opened in the exhaust pipe (20), and a transmission gear (33) passing through the exhaust pipe (20). The ball platform (371) and the ball crown (372) are respectively set on the top surface and bottom surface of the sliding gear (31). The center of the ball crown (372) is located at the central axis of the sliding gear (31). The transmission gear (33), the fan-shaped exhaust pipe (20) and the internal gear (32) are located at the same central axis. The sliding gear (31) meshes with the transmission gear (33) and the internal gear (32) respectively.

2. A range hood according to claim 1, characterized in that, The top wall of the transmission gear (33) is fixedly connected to a driven gear (34), and the central axis of the driven gear (34) coincides with the central axis of the transmission gear (33).

3. A range hood according to claim 2, characterized in that, The included angle between the two ends of the exhaust pipe (20) is 45°-90°. A servo motor (36) is installed on the side wall of the smoke collection chamber (12). A drive gear (35) is installed at the output end of the servo motor (36). The driven gear (34) meshes with the drive gear (35) at 90°.

4. A range hood according to claim 1, characterized in that, An arc-shaped groove (23) is provided on the outer shell of the drain pipe (20) near the central axis. The two side walls of the arc-shaped groove (23) are in contact with the transmission gear (33). The arc-shaped groove (23) is connected to the drain hole (21). A leak-proof plate (22) is attached to the inner side wall of the drain pipe (20). The leak-proof plate (22) connects the drain hole (21) and the arc-shaped groove (23).

5. A range hood according to claim 4, characterized in that, The side walls on both sides of the smoke collection chamber (12) are provided with slots (13) for connecting the exhaust pipe (20). Two fixing rings (16) are fixedly connected to the side walls on both sides of the base (10). The two fixing rings (16) are respectively fixed on the outer shell of the exhaust pipe (20). The transmission gear (33) and the driven gear (34) both pass through the fixing rings (16).

6. A range hood according to claim 1, characterized in that, The bottom of the smoke collection chamber (12) is provided with two inclined surfaces that slope downward toward the central axis of the base (10). The central axis of the bottom of the base (10) is provided with a slot (14). The slot (14) is connected to the smoke collection chamber (12), and an oil collection box (15) is inserted into the slot (14). A handle is installed on the side of the oil collection box (15) away from the base (10).

7. A range hood according to claim 1, characterized in that, The exhaust structure (40) includes an exhaust motor (43) installed in the power chamber (11), an impeller box (44) installed in the smoke collection chamber (12), an exhaust impeller (42) installed in the impeller box (44), and a filter screen (41) installed at the air inlet of the impeller box (44). The output end of the exhaust motor (43) passes through the side wall between the power chamber (11) and the smoke collection chamber (12), and the exhaust motor (43) is connected to the exhaust impeller (42).

8. A range hood according to claim 1, characterized in that, The bottom wall of the ball table (371) is in close contact with the internal gear (32) and the driven gear (34), and the top wall of the ball crown (372) is in close contact with the internal gear (32) and the driven gear (34).

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