A commercial oil fume machine oil fume separating mechanism

Abstract

The application discloses a commercial oil fume separator, which comprises a main body, a first oil fume separator arranged at the middle of the front end of the main body, a second oil fume separator arranged behind the first oil fume separator, and an internal cleaning mechanism arranged in the main body. The commercial oil fume separator is in the shape of a ladder. When oil fume is sucked in, the oil fume will enter the first separation net plate around the condensing plate, and the flow line of the oil fume will be sharply contracted, so that the collision and friction between the gas molecules are increased. At this time, the temperature of the oil fume is increased, the viscosity of the gas is increased, and the flow resistance of the oil fume is increased. When the collision between the molecules is increased, a plurality of oil droplets are formed, so that the oil fume is separated by the first separation net plate, the rotating filter screen and the second separation net plate in a step-by-step and graded manner.

Description

TECHNICAL FIELD

[0001] The present application relates to the production technology field of commercial range hood, in particular to a commercial range hood oil fume separation mechanism. BACKGROUND

[0002] Commercial range hood is an oil fume extractor in daily life, which is a kitchen appliance for purifying kitchen air. The commercial range hood generally extracts the waste of the stove, the oil fume harmful to human body generated in the cooking process and the odor of the kitchen garbage and sewer, and discharges them to the outdoor to reduce pollution and purify air, and has the safety guarantee function of preventing poison and explosion.

[0003] In the market, most of the commercial range hoods are only used to achieve the effect of quickly extracting oil fume, and are not as delicate and clean as household range hoods. Moreover, the commercial range hoods do not necessarily have the oil fume separation function. Even if some of them have the oil fume separation function, the oil fume separation function is only set at the initial oil fume extraction port to achieve the effect of preliminary oil removal and smoke exhaust. However, the above-mentioned situation can only remove part of the oil stains, and most of the oil will continue to be discharged along the smoke to the inside of the machine and the internal smoke exhaust pipe, which will still affect the surrounding environment and the machine itself. Therefore, the present application provides a commercial range hood oil fume separation mechanism. SUMMARY

[0004] The present application aims to provide a commercial range hood oil fume separation mechanism to solve the problem that most of the commercial range hoods are only used to achieve the effect of quickly extracting oil fume, and are not as delicate and clean as household range hoods. Moreover, the commercial range hoods do not necessarily have the oil fume separation function. Even if some of them have the oil fume separation function, the oil fume separation function is only set at the initial oil fume extraction port to achieve the effect of preliminary oil removal and smoke exhaust. However, the above-mentioned situation can only remove part of the oil stains, and most of the oil will continue to be discharged along the smoke to the inside of the machine and the internal smoke exhaust pipe, which will still affect the surrounding environment and the machine itself.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a commercial range hood oil fume separation mechanism, comprising a main body, a first oil fume separation mechanism disposed at the front center of the main body, and a second oil fume separation mechanism disposed at the rear of the first oil fume separation mechanism, an internal cleaning mechanism disposed inside the main body, and auxiliary cleaning and protection mechanisms disposed on both sides of the front of the main body, and an oil-collecting rack disposed at the bottom of the main body, the first oil fume separation mechanism comprising an assembly frame, and a condensation plate disposed at the center of the assembly frame, a first separation mesh plate disposed on the inner side of the condensation plate, and an outer frame disposed on the inner side of the first separation mesh plate, a rotating shaft disposed at the center of the outer frame, and a rotating filter disposed at the center of the rotating shaft, and a second separation mesh plate disposed on one side of the outer frame; the second oil fume separation mechanism comprising a centrifugal fan, and a central mounting shaft disposed at the center of the centrifugal fan, an outer volute disposed around the outer periphery of the centrifugal fan, and an internal groove distributed around the periphery of the outer volute, a heating rod disposed inside the internal groove, and a heat-conducting inner ring disposed on the inner side of the heating rod.

[0006] Furthermore, the condenser plate, the first separation screen plate, the rotating filter screen, and the second separation screen plate are arranged adjacent to each other, and the density of the first separation screen plate and the second separation screen plate is different.

[0007] Furthermore, the centrifugal fan, the central shaft, and the outer volute are movably connected, and the internal grooves are equidistantly distributed along the periphery of the outer volute.

[0008] Furthermore, the inner dimensions of the built-in groove match the outer dimensions of the heating rod, and one side of the heating rod is attached to the heat-conducting inner ring along the inner wall of the outer volute.

[0009] Furthermore, the internal cleaning mechanism includes a transmission screw, and a first screw sleeve is provided around one side of the transmission screw. A first drive motor is provided at one end of the transmission screw. Side mounting brackets are provided on both sides of the first screw sleeve, and a first sliding component is provided on the side of the side mounting bracket. A water pump is mounted in the middle of the side mounting bracket, and a guide pipe is provided in the middle of the water pump. The end of the guide pipe is connected to a water tank, and pressure rings are distributed on the outside of the guide pipe.

[0010] Furthermore, the side mounting frame forms a horizontal transmission structure through a transmission screw, a first screw sleeve, a first drive motor, a first sliding assembly, and the main body, and the ends of the guide pipes on both sides of the side mounting frame are oriented in opposite directions.

[0011] Furthermore, the pressure rings are equidistantly distributed along the outer periphery of the guide tube, and the inner wall dimensions of the pressure rings match the periphery dimensions of the guide tube.

[0012] Furthermore, the auxiliary cleaning and protection mechanism includes a hidden slot frame, and a positive and negative lead screw is provided in the middle of the hidden slot frame. A second drive motor is provided at one end of the positive and negative lead screw, and a second lead screw sleeve is provided on both sides of the middle of the positive and negative lead screw. An edge-fitting outer plate is provided above the second lead screw sleeve, and a second sliding component is provided on the other side of the edge-fitting outer plate. A snap-fit ​​plate is provided on the inner wall of the edge-fitting outer plate.

[0013] Furthermore, the outer edge plate is configured into a positioning transmission structure by means of positive and negative lead screws, a second drive motor, a second lead screw sleeve, a second sliding assembly, and the main body, and the positive and negative lead screws are located inside the hidden slot frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The assembly rack is arranged in a ladder shape. When oil fumes are drawn in, because the condenser plate is located in the middle of the assembly rack, the oil fumes enter through the first separation mesh plate around the condenser plate. During the entry process, the flow line of the oil fumes will contract sharply, thereby increasing the collision and friction between airflow molecules. At this time, the temperature of the oil fumes rises, and the viscosity of the gas also increases, which in turn increases the flow resistance of the oil fumes. When there are more collisions between molecules, multiple sets of oil droplets are formed, which are then separated into oil fumes in a step-by-step, graded manner by the first separation mesh plate, the rotating filter, and the second separation mesh plate of different densities. In addition, the temperature cooling effect of the condenser plate can effectively liquefy the oil on the mesh, increase its weight, and allow it to flow along the reserved oil lines inside the main body to the oil receiving rack at the bottom, thereby effectively reducing the adhesion to important components such as the fan. The oil content is reduced to ensure the reliability of the internal components of the range hood and extend their service life. Due to the low level of pollution, the frequency of cleaning and maintenance can be reduced. After the above-mentioned graded oil filtration, there is basically no oil or only a small amount of oil entering the machine with the smoke. At this time, the residual oil smoke will enter the machine with the pull of the centrifugal fan. However, under the centrifugal force generated by the high-speed rotating impeller of the fan, the denser oil in the smoke will be thrown to the inner heat-conducting inner ring of the outer volute or adhere to the impeller surface. Most of it will be collected in the oil collection rack along the oil line path, while some of the remaining oil will remain on the impeller and the inner heat-conducting inner ring of the outer volute. At this time, the heating rods distributed on the inner wall of the outer volute will start to work. After the temperature rises, the temperature can be transferred to its own inner wall and impeller through the heat-conducting inner ring. The oil adhering at this time can be gradually made lubricating by heating, thereby achieving the removal effect.

[0016] 2. Personnel can periodically clean the first and second oil fume separation mechanisms inside the main body. However, manual cleaning is labor-intensive and requires personnel to crawl inside, posing a safety hazard. In this case, the water pump in the middle of the side mounting bracket on both sides of the first lead screw sleeve can be started. Based on the opposite direction of the guide pipe ends, the water spray direction can be directed towards the approximate positions of the first and second oil fume separation mechanisms. For a more thorough cleaning, the first drive motor can be started, and the first lead screw sleeve can move back and forth on the transmission lead screw, so that the water from the spray nozzle can reach as many points as possible in the first and second oil fume separation mechanisms. Of course, appropriate additives can be added to the water in the water tank according to the cleaning situation. As for the pressure ring distributed outside the guide pipe, because the water tank is located at a lower position in this solution, the guide pipe expands and contracts vertically when entering and exiting. Therefore, the pressurization of the pressure ring can ensure that the guide pipe returns to the water tank every time it moves back and forth.

[0017] 3. During the operation of the internal cleaning mechanism, in order to prevent water from leaking out from the front of the main body, the second drive motor can be started so that the outer plates on both sides can be displaced and closed by the transmission of the forward and reverse screws, the second screw sleeve and other transmission components. The snap-fit ​​plates on the inner side of the two outer plates can improve the seal. In this state, the water being cleaned will enter the oil receiving frame along the original oil guide path, which is portable and practical. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an oil fume separation mechanism for a commercial range hood according to the present invention;

[0019] Figure 2 This is a side view of the internal structure of an oil fume separation mechanism for a commercial range hood according to the present invention;

[0020] Figure 3 This is a detailed structural diagram of the first oil fume separation mechanism of a commercial range hood according to the present invention;

[0021] Figure 4 This is a detailed structural diagram of the second oil fume separation mechanism of a commercial range hood according to the present invention;

[0022] Figure 5 This is a schematic diagram showing the detailed structure of the internal cleaning mechanism of the oil fume separation mechanism of a commercial range hood according to the present invention;

[0023] Figure 6 This is a front view of the auxiliary cleaning and protection mechanism of the oil fume separation mechanism of a commercial range hood according to the present invention.

[0024] In the diagram: 1. Main body; 2. First oil fume separation mechanism; 201. Assembly frame; 202. Condensation plate; 203. First separation screen plate; 204. Outer frame; 205. Rotating shaft; 206. Rotating filter screen; 207. Second separation screen plate; 3. Second oil fume separation mechanism; 301. Centrifugal fan; 302. Central shaft; 303. Outer volute; 304. Internal groove; 305. Heating rod; 306. Heat-conducting inner ring; 4. Internal cleaning mechanism; 401. Transmission. 402. Lead screw; 403. First lead screw sleeve; 404. First drive motor; 405. Side mounting bracket; 406. First sliding assembly; 407. Water pump; 408. Guide pipe; 409. Pressure ring; 5. Auxiliary cleaning and protection mechanism; 501. Hidden slot frame; 502. Positive and negative lead screws; 503. Second drive motor; 504. Second lead screw sleeve; 505. Edge-mounted outer plate; 506. Second sliding assembly; 507. Clip-on plate; 6. Oil support bracket. Detailed Implementation

[0025] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figures 1-4As shown, the present invention provides a technical solution: a commercial range hood oil fume separation mechanism, including a main body 1, a first oil fume separation mechanism 2 disposed at the front center of the main body 1, and a second oil fume separation mechanism 3 disposed behind the first oil fume separation mechanism 2, an internal cleaning mechanism 4 disposed inside the main body 1, and auxiliary cleaning and protection mechanisms 5 disposed on both sides of the front of the main body 1, and an oil-collecting rack 6 disposed at the bottom of the main body 1, the first oil fume separation mechanism 2 including an assembly rack 201, and a condensation plate 202 disposed in the middle of the assembly rack 201, the condensation plate 202 being used for condensation... A first separation mesh plate 203 is provided on the inner side of the plate 202, and an outer frame 204 is provided on the inner side of the first separation mesh plate 203. A rotating shaft 205 is provided in the middle of the outer frame 204, and a rotating filter 206 is provided in the middle of the rotating shaft 205. A second separation mesh plate 207 is provided on one side of the outer frame 204. The condenser plate 202, the first separation mesh plate 203, the rotating filter 206, and the second separation mesh plate 207 are arranged adjacent to each other, and the first separation mesh plate 203 and the second separation mesh plate 207 are arranged in a manner that is close together. Due to varying densities, the assembly rack 201 is arranged in a ladder shape. When oil fumes are drawn in, because the condenser plate 202 is located in the middle of the assembly rack 201, the oil fumes enter through the first separation mesh plate 203 around the condenser plate 202. During the entry process, the flow lines of the oil fumes contract sharply, thereby increasing the collision and friction between airflow molecules. At this time, the temperature of the oil fumes rises, and the viscosity of the gas also increases, consequently increasing the flow resistance of the oil fumes. When there are more collisions between molecules, multiple sets of oil droplets are formed, which are then separated by different densities. The first separation screen 203, the rotating filter screen 206, and the second separation screen 207 perform a step-by-step graded oil fume separation operation. In conjunction with the temperature cooling effect of the condenser plate 202, the oil on the screen can be effectively liquefied, increasing its weight so that it can flow along the reserved oil line inside the main body 1 to the oil receiving rack 6 at the bottom. This effectively reduces the amount of oil adhering to important components such as the fan, thereby ensuring the reliability of the internal components of the range hood and extending its service life. Moreover, due to the low degree of pollution, the frequency of cleaning and maintenance can be reduced.The second oil fume separation mechanism 3 includes a centrifugal fan 301, with a central shaft 302 located in the middle of the centrifugal fan 301. An outer volute 303 is located around the outer periphery of the centrifugal fan 301, and internal grooves 304 are distributed around the periphery of the outer volute 303. The centrifugal fan 301, the central shaft 302, and the outer volute 303 are movably connected. The internal grooves 304 are equidistantly distributed along the periphery of the outer volute 303. A heating rod 305 is installed inside the internal groove 304, and a heat-conducting inner ring 306 is located on the inner side of the heating rod 305. The inner dimensions of the internal groove 304 match the outer dimensions of the heating rod 305, and one side of the heating rod 305 is attached to the heat-conducting inner ring 306 along the inner wall of the outer volute 303. After undergoing the aforementioned graded filtration... After the oil is removed, there is basically no oil residue or only a small amount of oil entering the machine with the smoke. At this point, the remaining oil smoke will enter the machine under the attraction of the centrifugal fan 301. However, under the centrifugal force generated by the high-speed rotation of the impeller, the denser oil in the smoke will be thrown towards the inner wall of the outer volute 303's heat-conducting inner ring 306 or adhere to the impeller surface. Most of it will collect in the oil collector 6 along the oil line path, while some of the remaining oil will remain on the impeller and the inner wall of the outer volute 303's heat-conducting inner ring 306. At this time, the heating rods 305 distributed on the inner wall of the outer volute 303 will start working. After the temperature rises, it can be transferred to its own inner wall and the impeller through the heat-conducting inner ring 306. The oil adhering to this time can be gradually made lubricating by heating, thereby achieving the effect of removal.

[0028] like Figure 5As shown, the present invention provides a technical solution: an oil fume separation mechanism for a commercial range hood, wherein the internal cleaning mechanism 4 includes a transmission screw 401, and a first screw sleeve 402 is provided around one side of the transmission screw 401. A first drive motor 403 is provided at one end of the transmission screw 401. Side mounting brackets 404 are provided on both sides of the first screw sleeve 402, and a first sliding component 405 is provided on the side of the side mounting bracket 404. A water pump 406 is mounted in the middle of the side mounting bracket 404, and a guide pipe 407 is provided in the middle of the water pump 406. The frame 404 forms a horizontal transmission structure with the main body 1 via a transmission screw 401, a first screw sleeve 402, a first drive motor 403, a first sliding assembly 405, and a transmission screw 401. The ends of the guide pipes 407 on both sides of the side-mounted frame 404 face opposite directions. A water tank 408 is connected to the end of each guide pipe 407. Pressure rings 409 are distributed around the outside of each guide pipe 407, equidistantly along its outer perimeter. The inner wall dimensions of the pressure rings 409 match the perimeter dimensions of the guide pipe 407. Personnel can periodically adjust the main body 1. The internal first oil fume separation mechanism 2 and the second oil fume separation mechanism 3 are cleaned. However, manual cleaning is labor-intensive and requires personnel to crawl inside, posing a safety hazard. Therefore, the water pump 406 located in the middle of the side mounting brackets 404 on both sides of the first lead screw sleeve 402 can be activated. Based on the opposite direction of the ends of the guide pipes 407, the water spray direction can be directed towards the approximate positions of the first oil fume separation mechanism 2 and the second oil fume separation mechanism 3. For a more thorough cleaning, the first drive motor 403 is activated, and the first lead screw sleeve 402, carrying the guide pipes 407, moves along the drive screw... The rod 401 moves back and forth to ensure that the water from its spray nozzle reaches as many points as possible in the first oil fume separation mechanism 2 and the second oil fume separation mechanism 3. Of course, appropriate additives can be added to the water in the water tank 408 depending on the cleaning situation. The pressure ring 409 distributed outside the guide pipe 407 ensures that the guide pipe 407 can return to the water tank 408 each time it moves back and forth because the water tank 408 is positioned relatively low in this design.

[0029] like Figure 6As shown, the present invention provides a technical solution: a commercial range hood oil fume separation mechanism, the auxiliary cleaning and protection mechanism 5 includes a hidden slot frame 501, and a positive and negative lead screw 502 is provided in the middle of the hidden slot frame 501. A second drive motor 503 is provided at one end of the positive and negative lead screw 502, and a second lead screw sleeve 504 is provided on both sides of the middle of the positive and negative lead screw 502. An edge-adhering outer plate 505 is provided above the second lead screw sleeve 504, and a second sliding component 506 is provided on the other side of the edge-adhering outer plate 505. A snap-fit ​​plate 507 is provided on the inner wall of the edge of the edge-adhering outer plate 505. The edge-adhering outer plate 505 is connected by the positive and negative lead screw 502 and the second drive motor 503. The motor 503, the second lead screw sleeve 504, the second sliding component 506, and the main body 1 form a positioning transmission structure, and the positive and negative lead screws 502 are located inside the hidden slot frame 501. When the internal cleaning mechanism 4 is in operation, in order to prevent water stains from leaking out from the front of the main body 1, the personnel can start the second drive motor 503, so that the outer plates 505 on both sides can be displaced and closed by the transmission of the positive and negative lead screws 502, the second lead screw sleeve 504, and other transmission components. The snap-fit ​​plates 507 on the inner side of the two outer plates 505 can improve the seal. In this state, the cleaned water will enter the oil receiving frame 6 along the original oil guide route, which is portable and practical.

[0030] In summary, the oil fume separation mechanism of this commercial range hood, when oil fumes are drawn in, because the condenser plate 202 is located in the middle of the assembly frame 201, the oil fumes enter through the first separation mesh plates 203 around the condenser plate 202. During the entry process, the flow lines of the oil fumes contract sharply, thereby increasing the collision and friction between airflow molecules. At this time, the temperature of the oil fumes rises, and the viscosity of the gas also increases, consequently increasing the flow resistance of the oil fumes. When there are more collisions between molecules, multiple sets of oil droplets are formed, which are then separated into oil fumes in a step-by-step, graded manner by the first separation mesh plate 203, the rotating filter 206, and the second separation mesh plate 207 of different densities. In addition, the cooling effect of the condenser plate 202 further enhances the oil fume separation process. The oil on the screen is effectively liquefied, increasing its weight so that it can flow along the reserved oil line inside the main body 1 to the oil receiving rack 6 at the bottom. After the above-mentioned graded oil filtration, basically no oil or only a small amount of oil enters the machine with the smoke. At this time, the residual oil smoke will enter the machine with the attraction of the centrifugal fan 301. However, under the impeller of the high-speed operation of the fan, the centrifugal force generated will throw the oil with higher density in the smoke to the inner heat-conducting inner ring 306 of the outer volute 303 or adhere to the impeller surface. Most of it will be collected in the oil receiving rack 6 along the oil line path, while some of the remaining oil is still on the impeller and the inner heat-conducting inner ring 306 of the outer volute 303. At this time, the heating rods 305 distributed on the inner wall of the outer volute 303 will start working. Once the temperature rises, it can be transferred to the inner wall and impeller via the heat-conducting inner ring 306. The adhering oil, through heating, gradually becomes lubricating, thus achieving removal. Then, personnel can periodically clean the first oil fume separation mechanism 2 and the second oil fume separation mechanism 3 inside the main body 1. However, manual cleaning is labor-intensive and requires personnel to crawl inside, posing a safety hazard. Therefore, the water pump 406 in the middle of the side mounting brackets 404 on both sides of the first lead screw sleeve 402 can be activated. Based on the opposite direction of the ends of the guide pipes 407, the water spray direction can be directed towards the approximate positions of the first oil fume separation mechanism 2 and the second oil fume separation mechanism 3. For a more thorough cleaning, the first drive motor 403 can be activated, and its first lead screw sleeve 402 can... The guide pipe 407 moves back and forth on the transmission screw 401, so that the water from its spray nozzle can reach as many points as possible in the first oil fume separation mechanism 2 and the second oil fume separation mechanism 3. Of course, appropriate additives can be added to the water in the water tank 408 according to the cleaning situation. Finally, during the operation of the internal cleaning mechanism 4, in order to prevent water stains from leaking out from the front of the main body 1, the second drive motor 503 can be started, so that the outer plates 505 on both sides can be displaced and closed by the transmission components such as the forward and reverse screws 502 and the second screw sleeve 504. The snap-fit ​​plates 507 on the inner side of the two outer plates 505 can improve the seal. In this state, the cleaned water will enter the oil receiving frame 6 along the original oil guide route, which is portable and practical.

[0031] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A commercial range hood oil fume separation mechanism, comprising a main body (1), characterized in that: A first oil fume separation mechanism (2) is provided at the front center of the main body (1), and a second oil fume separation mechanism (3) is provided behind the first oil fume separation mechanism (2). An internal cleaning mechanism (4) is provided inside the main body (1), and auxiliary cleaning and protection mechanisms (5) are provided on both sides of the front of the main body (1). An oil-collecting rack (6) is provided at the bottom of the main body (1). The first oil fume separation mechanism (2) includes an assembly rack (201), and a condensation plate (202) is provided in the middle of the assembly rack (201). A first separation mesh plate (203) is provided on the inner side of the condensation plate (202), and an external frame (204) is provided on the inner side of the first separation mesh plate (203). The outer frame (204) has a rotating shaft (205) in the middle, and a rotating filter (206) is provided in the middle of the rotating shaft (205). A second separation mesh plate (207) is provided on one side of the outer frame (204). The second oil fume separation mechanism (3) includes a centrifugal fan (301), and a central shaft (302) is provided in the middle of the centrifugal fan (301). An outer volute (303) is provided on the outer periphery of the centrifugal fan (301), and an inner groove (304) is distributed around the outer volute (303). A heating rod (305) is provided inside the inner groove (304), and a heat-conducting inner ring (306) is provided on the inner side of the heating rod (305).

2. The oil fume separation mechanism for a commercial range hood according to claim 1, characterized in that: The condenser plate (202), the first separation screen plate (203), the rotating filter (206) and the second separation screen plate (207) are arranged in an adjacent manner, and the density of the first separation screen plate (203) and the second separation screen plate (207) is different.

3. The oil fume separation mechanism for a commercial range hood according to claim 1, characterized in that: The centrifugal fan (301), the central shaft (302) and the outer volute (303) are movably connected, and the internal grooves (304) are equidistantly distributed along the periphery of the outer volute (303).

4. The oil fume separation mechanism for a commercial range hood according to claim 1, characterized in that: The inner dimensions of the built-in groove (304) match the outer dimensions of the heating rod (305), and one side of the heating rod (305) is attached to the heat-conducting inner ring (306) along the inner wall of the outer volute (303).

5. The oil fume separation mechanism for a commercial range hood according to claim 1, characterized in that: The internal cleaning mechanism (4) includes a transmission screw (401), and a first screw sleeve (402) is provided around one side of the transmission screw (401). A first drive motor (403) is provided at one end of the transmission screw (401). Side mounting brackets (404) are provided on both sides of the first screw sleeve (402), and a first sliding component (405) is provided on the side of the side mounting bracket (404). A water pump (406) is assembled in the middle of the side mounting bracket (404), and a guide pipe (407) is provided in the middle of the water pump (406). The end of the guide pipe (407) is connected to a water tank (408), and pressure rings (409) are distributed on the outside of the guide pipe (407).

6. The oil fume separation mechanism for a commercial range hood according to claim 5, characterized in that: The side mounting bracket (404) forms a horizontal transmission structure through the transmission screw (401), the first screw sleeve (402), the first drive motor (403), the first sliding assembly (405), and the main body (1), and the ends of the guide pipes (407) on both sides of the side mounting bracket (404) are in opposite directions.

7. The oil fume separation mechanism for a commercial range hood according to claim 5, characterized in that: The pressure rings (409) are equidistantly distributed along the outer periphery of the guide tube (407), and the inner wall dimensions of the pressure rings (409) match the periphery dimensions of the guide tube (407).

8. The oil fume separation mechanism for a commercial range hood according to claim 1, characterized in that: The auxiliary cleaning and protection mechanism (5) includes a hidden slot frame (501), and a positive and negative lead screw (502) is provided in the middle of the hidden slot frame (501). A second drive motor (503) is provided at one end of the positive and negative lead screw (502). A second lead screw sleeve (504) is provided on both sides of the middle of the positive and negative lead screw (502). An edge-fitting outer plate (505) is provided above the second lead screw sleeve (504). A second sliding component (506) is provided on the other side of the edge-fitting outer plate (505). A snap-fit ​​plate (507) is provided on the inner wall of the edge-fitting outer plate (505).

9. The oil fume separation mechanism for a commercial range hood according to claim 8, characterized in that: The outer edge plate (505) is configured into a positioning transmission structure by means of the positive and negative lead screws (502), the second drive motor (503), the second lead screw sleeve (504), the second sliding assembly (506), and the main body (1), and the positive and negative lead screws (502) are located inside the hidden slot frame (501).

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