Split silent range hood

Abstract

The utility model relates to the field of range hoods, in particular to a split silent range hood, which comprises a range hood body, the air draft end at the top is connected with a split pipeline structure; a mute housing; the air draft end at the bottom is connected with the split pipeline structure; the split pipeline structure comprises a vertical outer pipe and a conical inner pipe, and the conical inner pipe is integrally and fixedly arranged in the vertical outer pipe. The mute cotton between the mute machine shell and the inner machine shell is installed outside the turbofan, noise generated by the turbofan is remarkably reduced, and the use experience of a user is enhanced. Due to the circulation design of the conical inner pipe, the wind noise of the range hood is reduced, and the noise pollution is further reduced. The oil fume filter screen simplifies the cleaning process of oil stains, and the combination of the atomization spray ring and the automatic cleaning spiral realizes the automatic cleaning of the oil stains, so that the wind noise amount is reduced.

Description

Technical Field

[0001] This utility model relates to the field of range hoods, specifically to a split-type silent range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. Installed above the stove, it quickly removes combustion waste and harmful fumes produced during cooking, expelling them outdoors to reduce pollution, purify the air, and provide safety features such as protection against poisoning and explosions. Range hoods are relatively new to ordinary Chinese kitchens. Early kitchen ventilation relied on exhaust fans. While exhaust fans could remove most of the fumes, they couldn't address the overall pollution caused by cooking fumes. These fumes contain many harmful substances, and prolonged exposure to such fumes can lead to various illnesses. Furthermore, Chinese dietary habits differ from Western ones, resulting in significant differences in kitchen utensils, styles, and layout. Frying, stir-frying, and deep-frying constitute a large proportion of Chinese food processing, leading to heavy fumes in Chinese kitchens, making them greasy and difficult to clean. Therefore, range hoods have become a powerful tool for improving the kitchen environment. It changes the kitchen environment, reducing the harm of cooking fumes to the kitchen environment and human health. Range hoods can be considered "killers" of cooking fumes. A Chinese patent discloses a split-type silent range hood (authorization announcement number CN202885070U). This patent technology discloses a split-type silent range hood consisting of a main body and an outer casing. The main body has a suction port at the bottom center, covered by a filter screen. The outer casing is installed on the outside of the wall, and a suction fan is installed inside the outer casing. The outer casing and the suction port are connected by a flexible air supply hose, and an exhaust pipe is installed on the outer casing. In this utility model, the suction fan of the split-type silent range hood is installed inside the outer casing. Because the outer casing is mounted on the outer wall, the noise emitted by the suction fan will not be transmitted into the kitchen, greatly reducing the noise of the range hood and improving its quietness performance. This patented technology solves the problem that existing range hoods rely on the high-speed rotation of a fan to generate negative pressure for smoke extraction, resulting in excessive noise during operation.

[0003] However, existing technologies generate significant wind noise when wind flows through pipes, necessitating solutions to reduce this noise.

[0004] Therefore, those skilled in the art have provided a split-type silent range hood to solve the problems mentioned in the background art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides:

[0006] A split-type silent range hood includes:

[0007] The range hood body; the top exhaust end is connected to a split duct structure;

[0008] Silent casing; the bottom exhaust port is connected to the split duct structure;

[0009] The split pipe structure includes a vertical outer pipe and a conical inner pipe, and the conical inner pipe is fixedly installed inside the vertical outer pipe. The top ends of the vertical outer pipe and the conical inner pipe are sealed to the silent housing, and the bottom ends of the vertical outer pipe and the conical inner pipe are sealed to the range hood body. A noise-isolating silencing cotton is provided between the vertical outer pipe and the conical inner pipe.

[0010] Preferably, a shaft housing is fixed to the inner edge of the top end of the tapered inner tube, and a transmission rod disposed at the center of the tapered inner tube is rotatably installed inside the shaft housing.

[0011] Preferably, a cleaning spiral is fixed to the outer wall of the transmission rod and disposed inside the conical inner tube, the cleaning spiral being tightly attached to the inner wall of the conical inner tube.

[0012] Preferably, a worm gear is fixedly mounted on the inner side of the shaft housing of the transmission rod, the worm gear meshes with a worm, and one end of the worm is connected to a servo motor.

[0013] The servo motor is fixedly mounted on the outside of the vertical outer tube, and the output end of the servo motor rotates through the vertical outer tube, the tapered inner tube, and is fixedly connected to the worm gear.

[0014] Preferably, an atomizing spray ring is fixedly provided on the inner edge of the top of the conical inner tube, and the atomizing spray ring is connected through a supply pipe located outside the vertical outer tube.

[0015] The supply pipe is connected to an external pump body, which is used to draw cleaning fluid for cleaning oil fumes and grease.

[0016] Preferably, an inner casing is fixed to the inner side of the silent casing, and noise-absorbing sound-absorbing cotton is installed between the inner casing and the silent casing. A turbine fan for wind extraction is installed on the inner side of the inner casing.

[0017] Preferably, the range hood body is detachably fitted with an oil fume filter screen on the inner side near the exhaust end, and a collection box is detachably fitted on the inner side of the range hood body below the oil fume filter screen.

[0018] The collection box is detachably equipped with detachable bolts on both sides, and the collection box is assembled to the inside of the range hood body via the detachable bolts.

[0019] The top of the silent housing is connected to an exhaust pipe that discharges oil fumes outdoors.

[0020] The front wall of the range hood is equipped with a controller.

[0021] The technical effects and advantages of this utility model are as follows:

[0022] This invention significantly reduces the noise generated by the turbine fan by installing sound-absorbing cotton between the external casing and the internal casing, thus enhancing the user experience. The conical inner tube's flow design reduces the fan's airflow noise, further mitigating noise pollution. The fume filter simplifies the cleaning process, while the combination of the atomizing spray ring and the automatic cleaning spiral achieves automatic oil removal, reducing wind noise. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a split-type silent range hood provided in this application;

[0024] Figure 2 This is a schematic diagram of the side structure of a split-type silent range hood provided in this application;

[0025] Figure 3 This is a structural diagram of the range hood body in a split-type silent range hood provided in this application;

[0026] Figure 4 This is a structural schematic diagram of the silent casing in a split-type silent range hood provided in this application;

[0027] Figure 5 This is a structural diagram of the split-pipe structure in a split-type silent range hood provided in this application;

[0028] Figure 6 This is a structural diagram of point A in a split-type silent range hood provided in this application.

[0029] In the picture:

[0030] 1. Range hood body;

[0031] 2. Split-pipe structure; 201. Vertical outer pipe; 202. Conical inner pipe; 203. Noise-absorbing cotton lining; 204. Shaft housing; 205. Transmission rod; 206. Worm gear; 207. Worm; 208. Servo motor; 209. Cleaning spiral; 210. Atomizing spray ring; 211. Supply pipe;

[0032] 3. Silent housing; 4. Exhaust duct; 5. Controller; 6. Collection box; 7. Removal bolts; 8. Oil fume filter; 9. Inner housing; 10. Sound insulation cotton; 11. Turbine fan. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The examples of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0034] For examples, please refer to Figures 1-6 This embodiment provides a split-type silent range hood, comprising a range hood body 1; a split-type pipe structure 2 connected to the top exhaust end; a silent housing 3; and an exhaust end connected to the split-type pipe structure 2 at the bottom. The split-type pipe structure 2 includes a vertical outer pipe 201 and a conical inner pipe 202, with the conical inner pipe 202 being fixedly installed inside the vertical outer pipe 201. The top ends of the vertical outer pipe 201 and the conical inner pipe 202 are sealed to the silent housing 3, and the bottom ends of the vertical outer pipe 201 and the conical inner pipe 202 are sealed to the range hood body 1. A noise-isolating silencing cotton 203 is provided between the vertical outer pipe 201 and the conical inner pipe 202.

[0035] A shaft housing 204 is fixed to the inner edge of the top of the tapered inner tube 202, and a transmission rod 205 located at the center of the tapered inner tube 202 is rotatably mounted inside the shaft housing 204. A cleaning spiral 209 located inside the tapered inner tube 202 is fixed to the outer wall of the transmission rod 205, and the cleaning spiral 209 is tightly attached to the inner wall of the tapered inner tube 202. A worm gear 206 is fixedly mounted on the inner side of the shaft housing 204 of the transmission rod 205, and the worm gear 206 meshes with a worm 207, one end of which is connected to a servo motor 208. The servo motor 208 is fixedly mounted on the outside of the vertical outer tube 201, and the output end of the servo motor 208 rotatably passes through the vertical outer tube 201, the tapered inner tube 202, and is fixedly connected to the worm 207.

[0036] An atomizing spray ring 210 is fixedly installed along the inner edge of the top of the conical inner tube 202, and the atomizing spray ring 210 is connected to a supply pipe 211 located outside the vertical outer tube 201. The supply pipe 211 is connected to an external pump body, which is used to extract cleaning fluid for cleaning oil fumes and oil stains. An inner casing 9 is fixed inside the silent casing 3, and noise-absorbing cotton 10 is installed between the inner casing 9 and the silent casing 3. A turbine fan 11 for wind extraction is installed inside the inner casing 9.

[0037] The range hood body 1 is detachably fitted with an oil fume filter 8 near the inner side of the exhaust end, and a collection box 6 is detachably fitted to the inner side of the range hood body 1 below the oil fume filter 8. The collection box 6 is detachably fitted with disassembly bolts 7 on both sides, and the collection box 6 is fitted to the inner side of the range hood body 1 via the disassembly bolts 7; the top of the silent housing 3 is connected to an exhaust pipe 4 for discharging oil fumes outdoors; a controller 5 is fitted to the front wall of the range hood body 1.

[0038] According to the above embodiments, the working principle of this invention is as follows:

[0039] The silent housing 3 can be installed inside the ceiling where the air is vented, and one end of the exhaust pipe 4 can be connected to the outside.

[0040] When the kitchen fumes are extracted and discharged outdoors, the turbine fan 11 is started. The turbine fan 11, connected to the range hood body 1 by the split pipe structure 2, can extract and discharge the cooking fumes outdoors.

[0041] The noise generated by the wind power of the turbine fan 11 is absorbed by the sound-absorbing cotton 10 between the soundproof casing 3 and the inner casing 9 to achieve a noise reduction effect.

[0042] Furthermore, when the wind force of the turbine fan 11 passes through the conical inner tube 202, the wind force is drawn through the conical space, which reduces the wind noise at the range hood body 1. The drawn oil fumes are filtered by the oil fume filter 8 and drip into the collection box 6. When oil fumes are generated on the inner wall of the conical inner tube 202 after a long period of oil fume air flow, cleaning liquid can be drawn by the external pump and sprayed onto the inner wall of the conical inner tube 202 through the atomizing spray ring 210 to dissolve the oil stains. At the same time, the servo motor 208 is started. After the servo motor 208 is started, it drives the worm gear 207 to rotate. The worm gear 207 meshes with the worm wheel 206 to rotate, which drives the cleaning spiral 209 on the transmission rod 205 to be driven by the worm wheel 206. This can gradually scrape and clean the oil stains inside the conical inner tube 202 from top to bottom, and drip into the collection box 6 below the oil fume filter 8, thus completing the cleaning of the oil stains and reducing the amount of wind noise caused by the friction of air flow on the sticky oil stains.

[0043] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A split-type silent range hood, characterized in that, include: Range hood body (1); The exhaust end at the top is connected to a split pipe structure (2); Silent housing (3); The bottom exhaust end is connected to the split pipe structure (2); The split pipe structure (2) includes a vertical outer pipe (201) and a tapered inner pipe (202), and the tapered inner pipe (202) is fixedly installed inside the vertical outer pipe (201). The top ends of the vertical outer pipe (201) and the tapered inner pipe (202) are sealed to the silent housing (3). The bottom ends of the vertical outer tube (201) and the conical inner tube (202) are sealed to the range hood body (1), and a noise-isolating silencing cotton 2 (203) is provided between the vertical outer tube (201) and the conical inner tube (202).

2. The split-type silent range hood according to claim 1, characterized in that, A shaft housing (204) is fixed to the inner edge of the top end of the tapered inner tube (202), and a transmission rod (205) is rotatably installed inside the shaft housing (204) at the center of the tapered inner tube (202).

3. A split-type silent range hood according to claim 2, characterized in that, The outer wall of the transmission rod (205) is fixed with a cleaning spiral (209) disposed inside the conical inner tube (202), and the cleaning spiral (209) is closely attached to the inner wall of the conical inner tube (202).

4. A split-type silent range hood according to claim 3, characterized in that, The transmission rod (205) is fixedly fitted with a worm gear (206) on the inner side of the shaft housing (204). The worm gear (206) meshes with a worm (207), and one end of the worm (207) is connected to a servo motor (208).

5. A split-type silent range hood according to claim 1, characterized in that, The tapered inner tube (202) is also fixedly provided with an atomizing spray ring (210) at the top inner edge, and the atomizing spray ring (210) is connected to a supply pipe (211) located outside the vertical outer tube (201).

6. A split-type silent range hood according to claim 1, characterized in that, An inner casing (9) is fixed inside the silent casing (3), and a noise-absorbing sound-absorbing cotton (10) is installed between the inner casing (9) and the silent casing (3). A wind turbine fan (11) for wind extraction is installed inside the inner casing (9).

7. A split-type silent range hood according to claim 1, characterized in that, The inside of the range hood body (1) near the exhaust end is detachably fitted with an oil fume filter (8), and a collection box (6) is detachably fitted inside the range hood body (1) below the oil fume filter (8).

Images