A range hood fume filtration device

Abstract

This utility model discloses an oil fume filtration device for a range hood, belonging to the field of oil fume filtration technology. It includes a range hood body, a filter screen installed inside the body, an air blowing device attached to the front of the filter screen, and a rotating device fixedly connected to the air blowing device. In this utility model, a first motor and a second motor work together. The first motor drives a rotating shaft and a rotating block to rotate, causing the air blowing plate to rotate synchronously with the rotating block. During this process, the second motor drives the fan blades to rotate at high speed, drawing in external gas through through holes in the housing and transporting the gas through pipes to the cavity of the air blowing plate. The high-pressure gas is finally ejected from multiple nozzles on the air blowing plate, directly impacting the filter screen surface. This design achieves dynamic cleaning of the filter screen during operation: the ejected airflow can peel off grease adhering to the filter screen, avoiding clogging and thus maintaining the range hood's oil fume extraction effect, reducing the frequency of manual cleaning.

Description

Technical Field

[0001] This application relates to the field of oil fume filtration technology, specifically to an oil fume filtration device for a range hood. Background Technology

[0002] With the widespread use of modern kitchen equipment, range hoods are increasingly used in homes and restaurants. Their core function is to absorb grease and particulate matter from cooking fumes through filters, thereby reducing environmental pollution and improving air quality. However, filters are prone to clogging due to grease buildup during long-term use, leading to a decrease in fume extraction efficiency. Currently, the common solution is to regularly disassemble the filters for cleaning or replacement, but this process is cumbersome, and frequent disassembly may affect the stability of the equipment structure. In addition, traditional range hoods lack real-time cleaning and maintenance functions for the filters during operation, making it difficult to effectively alleviate the problem of grease accumulation. Therefore, how to maintain the filtration efficiency without frequent filter disassembly has become an important research direction for improving the practicality of range hoods. Utility Model Content

[0003] The purpose of this invention is to provide an oil fume filtration device for a range hood to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: an oil fume filtration device for a range hood, comprising a range hood body, a filter screen installed inside the range hood body, an air blowing device overlapping the front of the filter screen, a rotating device fixedly connected to the outside of the air blowing device, and a replacement device installed inside the air blowing device.

[0005] The air blowing device includes a housing, a circular shell installed inside the housing, a first motor installed inside the circular shell, a fan blade installed at the output end of the first motor, three through holes opened inside the housing, a pipe connected through the housing, an air blowing plate installed at one end of the pipe, a plurality of air outlets installed inside the air blowing plate, and a filter plate installed inside the air blowing plate.

[0006] The rotating device includes a second motor, which is fixedly connected to the range hood body. The output end of the second motor is fixedly connected to a rotating shaft. A rotating block is installed at one end of the rotating shaft. The housing is fixedly connected to the outside of the rotating block, and the air blowing plate is fixedly connected to the outside of the rotating block.

[0007] Optionally, the filter plate and the air blowing plate adopt a quick-release structure for easy replacement.

[0008] Optionally, the air outlet is configured as a rubber nozzle that is easy to fit the filter screen.

[0009] Optionally, the air blowing plate has a cavity, and the pipe extends into the cavity.

[0010] Optionally, the replacement device includes a mounting ring, which is installed inside the housing, and a filter frame is fixedly connected inside the mounting ring.

[0011] Optionally, the mounting ring has an external thread, the sleeve has an internal thread, and the mounting ring and the sleeve form a threaded connection.

[0012] Optionally, the filter frame has a mounting hole, and the second motor is mounted in the mounting hole.

[0013] Compared with the prior art, this application has at least the following beneficial effects:

[0014] 1. In this utility model, by driving the first motor and the second motor to work together, the first motor drives the rotating shaft and the rotating block to rotate, so that the air blowing plate rotates synchronously with the rotating block. During this process, the second motor drives the fan blades to rotate at high speed, drawing in external gas through the through hole on the housing, and transporting the gas through the pipe to the cavity of the air blowing plate. The high-pressure gas is finally sprayed out from multiple air outlets of the air blowing plate, directly impacting the surface of the filter screen. This design realizes the dynamic cleaning of the filter screen during operation: the sprayed airflow can peel off the grease attached to the filter screen, avoid clogging problems, thereby maintaining the oil fume extraction effect of the range hood and reducing the frequency of manual cleaning.

[0015] 2. In this utility model, by rotating the mounting ring, the filter frame can be moved outward and detached from the housing by utilizing the matching relationship between its external thread and the internal thread of the housing. At this time, the filter screen or filter plate can be quickly removed for replacement or cleaning. This quick-release structure does not require additional tools, simplifies the maintenance process, and avoids the potential damage to the internal structure of the range hood caused by traditional disassembly methods. In addition, the snap-fit ​​design between the mounting hole in the filter frame and the second motor further ensures the stability during the replacement process, making the cleaning or replacement operation safer and more reliable. Attached Figure Description

[0016] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0017] Figure 1 This is a three-dimensional structural diagram of an oil fume filtration device for a range hood provided in Embodiment 1 of this application;

[0018] Figure 2 This is a three-dimensional structural diagram of the filter screen of an oil fume filtration device for a range hood, provided in Embodiment 1 of this application.

[0019] Figure 3 This is a three-dimensional structural diagram of the air blowing device of an oil fume filtration device for a range hood, provided in Embodiment 2 of this application;

[0020] Figure 4 An oil fume filtration device for a range hood provided in Embodiment 1 of this application. Figure 3 An enlarged structural diagram of part A in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Range hood body; 2. Filter screen; 3. Air blowing device; 301. Housing; 302. Round shell; 303. First motor; 304. Fan blade; 305. Through hole; 306. Pipe; 307. Air blowing plate; 308. Air outlet; 309. Filter plate; 4. Rotating device; 401. Second motor; 402. Rotating shaft; 403. Rotating block; 5. Replacement device; 501. Mounting ring; 502. Filter frame; 503. Mounting hole. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please see Figures 1-4 ;

[0025] First embodiment:

[0026] This utility model provides a technical solution: an oil fume filtration device for a range hood, including a range hood body 1, a filter screen 2 installed inside the range hood body 1, an air blowing device 3 overlapping the front of the filter screen 2, a rotating device 4 fixedly connected to the outside of the air blowing device 3, and a replacement device 5 installed inside the air blowing device 3.

[0027] The air blowing device 3 includes a housing 301, a circular shell 302 installed inside the housing 301, a first motor 303 installed inside the circular shell 302, a fan blade 304 installed at the output end of the first motor 303, three through holes 305 opened inside the housing 301, a pipe 306 passing through the housing 301, an air blowing plate 307 installed at one end of the pipe 306, a plurality of air outlets 308 installed inside the air blowing plate 307, and a filter plate 309 installed inside the air blowing plate 307.

[0028] The rotating device 4 includes a second motor 401, which is fixedly connected inside the range hood body 1. The output end of the second motor 401 is fixedly connected to a rotating shaft 402. A rotating block 403 is installed at one end of the rotating shaft 402. A housing 301 is fixedly connected to the outside of the rotating block 403, and an air blowing plate 307 is fixedly connected to the outside of the rotating block 403.

[0029] Specifically, such as Figures 2-3As shown, the filter plate 309 and the air blowing plate 307 adopt a quick-release structure for easy replacement. The air outlet 308 is set as a rubber nozzle that is easy to fit the filter screen 2. The air outlet 308 is made of rubber, which gives it a certain elasticity when it fits the filter screen 2, avoiding hard contact that could cause wear to the filter screen 2. At the same time, when the rotating block 403 drives the air blowing plate 307 to rotate, the rubber nozzle can adapt to the surface undulations of the filter screen 2 and maintain a stable airflow output. This design not only reduces mechanical friction damage to the filter screen 2, but also ensures a continuous and effective output of clean airflow, extending the service life of the filter screen 2 and the air blowing device 3.

[0030] The air blowing plate 307 has a cavity inside, and the pipe 306 extends into the cavity. The air blowing plate 307 has a cavity inside, and the pipe 306 extends into the cavity, so that the airflow can be evenly distributed after entering the air blowing plate 307. Due to the buffering effect of the cavity, the high-pressure airflow will not directly impact a fixed point of the filter screen 2, but will be dispersed and discharged through multiple air outlets 308, forming a more uniform clean airflow. This structure avoids the filter screen 2 from being deformed due to excessive local airflow, and at the same time improves the coverage of grease removal, making the filter screen 2 cleaner.

[0031] During operation, the first motor 303 and the second motor 401 work together. The first motor 303 drives the rotating shaft 402 and the rotating block 403 to rotate, so that the air blowing plate 307 rotates synchronously with the rotating block 403. During this process, the second motor 401 drives the fan blade 304 to rotate at high speed, drawing in external gas through the through hole 305 on the housing 301 and delivering the gas to the cavity of the air blowing plate 307 through the pipe 306. The high-pressure gas is finally sprayed out from the multiple air outlets 308 of the air blowing plate 307, directly impacting the surface of the filter screen 2. This design realizes the dynamic cleaning of the filter screen 2 during operation: the sprayed airflow can peel off the grease attached to the filter screen 2, avoiding clogging problems, thereby maintaining the range hood's smoke extraction effect and reducing the frequency of manual cleaning.

[0032] Second embodiment:

[0033] Specifically, such as Figure 4As shown, the replacement device 5 includes a mounting ring 501, which is installed inside the housing 301. A filter frame 502 is fixedly connected inside the mounting ring 501. The mounting ring 501 has external threads, and the housing 301 has internal threads. The mounting ring 501 and the housing 301 form a threaded connection. The filter frame 502 has a mounting hole 503, and the second motor 401 is engaged in the mounting hole 503. The external threads of the mounting ring 501 engage with the internal threads of the housing 301, forming a rotatable and detachable connection. When it is necessary to replace or clean the filter screen 2, simply rotate the mounting ring 501 to detach the filter frame 502 from the housing 301 without the need for additional tools. The engagement design between the mounting hole 503 in the filter frame 502 and the second motor 401 further ensures the stability during disassembly and assembly, preventing the filter frame 502 from loosening or misaligning. This quick-release structure greatly reduces the difficulty of maintenance, allowing users to perform daily cleaning or replacement operations more conveniently.

[0034] During operation, by rotating the mounting ring 501, the external thread of the ring engages with the internal thread of the housing 301, causing the filter frame 502 to move outward and detach from the housing 301. At this time, the filter screen 2 or filter plate 309 can be quickly removed for replacement or cleaning. This quick-release structure eliminates the need for additional tools, simplifying the maintenance process and avoiding potential damage to the internal structure of the range hood caused by traditional disassembly methods. In addition, the snap-fit ​​design between the mounting hole 503 in the filter frame 502 and the second motor 401 further ensures stability during the replacement process, making cleaning or replacement operations safer and more reliable.

[0035] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A range hood fume filtration device, comprising a range hood body (1), characterized in that, The range hood body (1) is equipped with a filter screen (2), and a blowing device (3) is attached to the front of the filter screen (2). A rotating device (4) is fixedly connected to the outside of the blowing device (3), and a replacement device (5) is installed inside the blowing device (3). The air blowing device (3) includes a housing (301), a circular shell (302) is installed inside the housing (301), a first motor (303) is installed inside the circular shell (302), a fan blade (304) is installed at the output end of the first motor (303), three through holes (305) are opened inside the housing (301), a pipe (306) is connected through the housing (301), an air blowing plate (307) is installed at one end of the pipe (306), a plurality of air outlets (308) are installed inside the air blowing plate (307), and a filter plate (309) is installed inside the air blowing plate (307). The rotating device (4) includes a second motor (401), which is fixedly connected inside the range hood body (1). The output end of the second motor (401) is fixedly connected to a rotating shaft (402). A rotating block (403) is installed at one end of the rotating shaft (402). The housing (301) is fixedly connected outside the rotating block (403), and the air blowing plate (307) is fixedly connected outside the rotating block (403).

2. The oil fume filtering device of the range hood according to claim 1, characterized in that, The filter plate (309) and the air blowing plate (307) adopt a quick-release structure for easy replacement.

3. The oil fume filtering device of the range hood according to claim 1, characterized in that, The air outlet (308) is configured as a rubber nozzle that is easy to fit the filter (2).

4. The oil fume filtering device of the range hood according to claim 1, characterized in that, The air blowing plate (307) has a cavity, and the pipe (306) extends into the cavity.

5. The oil fume filtering device of the range hood according to claim 1, characterized in that, The replacement device (5) includes a mounting ring (501), which is installed inside the housing (301), and a filter frame (502) is fixedly connected inside the mounting ring (501).

6. The oil fume filtering device of the range hood according to claim 5, characterized in that, The mounting ring (501) has an external thread, and the sleeve (301) has an internal thread, and the mounting ring (501) and the sleeve (301) form a threaded connection.

7. The oil fume filtering device of the range hood according to claim 5, characterized in that, The filter frame (502) has an installation hole (503) inside, and the second motor (401) is installed in the installation hole (503).

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