Double-air-duct range hood with automatic cleaning function

Abstract

The invention relates to the technical field of range hoods, in particular to a double-air-duct range hood with an automatic cleaning function, which comprises a housing of the range hood, two oil scraping pieces, two oil scraping plates, two oil scraping plates, two oil scraping plates and two oil scraping plates, the two oil scraping pieces are movably arranged in the two exhaust channels correspondingly and attached to the front inner walls and the rear inner walls of the exhaust channels. The reciprocating driving mechanism is arranged in the machine shell; the two oil removing pieces are arranged on the oil stain accumulation surfaces of the two oil scraping pieces in a sliding mode correspondingly and used for gathering oil stains on the oil stain accumulation surfaces of the oil scraping pieces to one position; and the two flushing mechanisms are fixedly arranged on the two oil removing pieces correspondingly. Through mutual cooperation of the oil scraping piece, the reciprocating driving mechanism, the oil removing piece and the flushing mechanism, the interior of the exhaust channel can be automatically cleaned, frequent machine disassembly is not needed, and the burden of a user is greatly relieved.

Description

Technical Field

[0001] The invention relates to the technical field of range hoods, and in particular to a double-duct range hood with an automatic cleaning function. Background Art

[0002] The dual-duct range hood is designed with two independent exhaust channels, one for each of the left and right sides of the range hood. When the motor is started, the wind wheels in the two ducts rotate simultaneously, generating a strong suction force that draws the fumes into the range hood and exhausts them through the two ducts. This design can better balance the air intake on both sides, achieving a large air volume and low noise effect.

[0003] At present, the main components of dual-duct range hoods include: 1. Casing, which is the external structure of the range hood, usually made of metal or heat-resistant material, used to protect internal components and prevent oil smoke from leaking out; 2. Air duct, the dual-duct range hood has two independent air duct systems, and the design of the air duct should ensure that the oil smoke can flow smoothly and reduce the possibility of backflow and leakage; 3. Fan, which is generally arranged at the top of the air duct, generates a strong suction force to suck the oil smoke into the range hood; 4. Filter, which is generally arranged at the bottom of the air duct, used to filter large particles in the oil smoke to prevent it from entering the range hood or being discharged to the outside; 5. Oil cup, the bottom of the range hood is generally provided with an inclined oil guide plate, and the oil cup is located at the bottom of the oil guide plate, which is used to collect oil stains and oil droplets left after filtering by the filter.

[0004] When the dual-duct range hood is working, the inside of the duct will be stained with oil. The existing dual-duct range hoods usually do not have an internal automatic cleaning function and can only be disassembled for cleaning, which is cumbersome and time-consuming for non-professionals. Users can only ask professionals to clean the interior regularly, which puts a heavy burden on users. For this reason, we propose a dual-duct range hood with automatic cleaning function to well solve the above-mentioned drawbacks. Summary of the invention

[0005] The object of the present invention is to provide a dual-duct range hood with an automatic cleaning function, so as to solve the problems raised in the above-mentioned background technology.

[0006] The present invention is realized by the following technical scheme: a double-duct range hood with automatic cleaning function, comprising a range hood casing, in which two independent exhaust passages are arranged at intervals in the horizontal direction, and further comprising:

[0007] Two oil scraping members, the two oil scraping members are movably arranged in the two exhaust passages and fit with the front and rear inner walls of the exhaust passages;

[0008] A reciprocating drive mechanism, which is disposed in the housing and is used to drive the two oil scraping members to move away from or closer to each other;

[0009] Two oil removal members, the two oil removal members are respectively slidably arranged on the oil accumulation surfaces of the two oil scraping members, and are used to gather the oil on the oil accumulation surfaces of the oil scraping members to one place;

[0010] Two flushing mechanisms are respectively fixedly arranged on the two oil removal parts, and the liquid inlet of each flushing mechanism is conductively connected with the external liquid supply unit.

[0011] Optionally, the oil scraper comprises two oil scraper plates respectively fitted with the front inner wall and the rear inner wall of the exhaust passage, an oil baffle plate is fixedly connected to the sides of the two oil scraper plates close to each other, the oil scraper plate and the oil baffle plate cooperate to form an L-shaped structure, and a connecting arm is fixedly connected between the two oil baffle plates;

[0012] The reciprocating drive mechanism is transmission-connected with the connecting arm, and the oil removal member is slidingly connected with the oil scraper plate.

[0013] Optionally, the reciprocating drive mechanism includes a bidirectional screw that penetrates the two exhaust channels in a horizontal direction and is helically engaged with each connecting arm, and a servo motor that is transmission-connected to the bidirectional screw is fixedly installed in the casing.

[0014] Optionally, the oil removal component includes two oil removal blocks that slide on the oil accumulation surface of the scraper plate and are spaced apart up and down, and an oil collecting groove is provided on the side of the two oil removal blocks that are close to each other, and a drain pipe that is connected to the exhaust channel is fixedly connected to the side of the casing; when the two oil removal blocks move toward each other and fit together, the two oil collecting grooves cooperate to form a columnar groove that is connected to the drain pipe, and an injection assembly that is compatible with the columnar groove is provided on the scraper plate, and the liquid inlet of the injection assembly is connected to the external liquid supply unit.

[0015] Optionally, a dovetail groove is provided on the oil accumulation surface of the scraper plate in the vertical direction, a dovetail slider matching the dovetail groove is fixedly connected to the oil removal block, a guide groove connected to the dovetail groove is provided in the middle of the scraper plate, the outer contour of the guide groove is the same as the outer contour of the columnar groove, and the injection assembly is arranged in the guide groove.

[0016] Optionally, the injection assembly includes a flow channel opened in the oil scraper plate along the vertical direction, the liquid inlet at the lower end of the flow channel is conductively connected to the external liquid supply unit, and an injection port for connecting the flow channel to the oil collecting tank is opened on the oil scraper plate;

[0017] A sealing plate is movably inserted in the flow channel, and a connecting rope is fixedly connected to the upper end of the sealing plate. The end of the connecting rope away from the sealing plate moves vertically through the oil scraper plate and is fixedly connected to the oil removal block. A compression spring is sleeved on the connecting rope to always apply downward elastic force to the sealing plate.

[0018] An infusion groove is arranged at the lower end of the sealing plate, and a plurality of injection holes communicated with the infusion groove are evenly distributed on one side of the sealing plate close to the injection port.

[0019] Optionally, a rail groove corresponding to each oil removal block is formed on the inner wall of the exhaust passage, and a sliding rod that slides in the corresponding rail groove is fixedly connected to the oil removal block;

[0020] The rail groove is composed of a transverse groove and an inclined groove, so that the oil removal block can perform intermittent up and down reciprocating motion along the oil accumulation surface of the oil scraper plate.

[0021] Optionally, the flushing mechanism includes a flushing pipe arranged between two oil removal blocks at the same height, a plurality of spraying parts are evenly distributed on each flushing pipe, and a liquid inlet of each flushing pipe is conductively connected to an external liquid supply unit.

[0022] Optionally, the spray cleaning component includes two oblique nozzles conductively connected to the flushing pipe, and a straight nozzle located between the two oblique nozzles is conductively connected to the flushing pipe.

[0023] Optionally, the angle between the oblique nozzle and the straight nozzle is 40°-50°.

[0024] Compared with the prior art, the present invention provides a dual-duct range hood with automatic cleaning function, which has the following beneficial effects:

[0025] 1. The present invention provides an oil scraper and a reciprocating drive mechanism. When the interior of the dual-duct range hood needs to be cleaned, the reciprocating drive mechanism can drive the two oil scrapers to move away from each other, thereby scraping off the oil stains on the front and rear inner walls of the two exhaust channels. No manual cleaning is required, saving time and effort.

[0026] 2. The present invention provides an oil removal component. When two oil removal blocks in the oil removal component are close to each other, the oil accumulated on the surface of the scraper component can be gathered in the oil collecting groove. When the two oil removal blocks are in contact with each other, the two oil collecting grooves can cooperate to form a columnar groove connected to the sewage pipe. At this time, the gathered oil is concentrated in the columnar groove, and the oil in the columnar groove can be flushed into the sewage pipe through the injection assembly and discharged. The scraped oil can be automatically processed, which is convenient for use.

[0027] 3. The present invention provides a flushing mechanism. Since the flushing mechanism can move synchronously with the oil removal component, the flushing mechanism can move left and right and up and down in the exhaust passage, so that the upper and lower inner walls and left and right inner walls of the exhaust passage can be fully flushed by the spraying component, and the flushing effect is better.

[0028] 4. The present invention can automatically clean the inside of the exhaust duct through the mutual cooperation between the oil scraper, the reciprocating drive mechanism, the oil removal member and the flushing mechanism, without the need for frequent disassembly of the machine, thus greatly reducing the burden on users. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a diagram showing the initial state of the internal oil scraping member of the dual-duct range hood of the present invention;

[0030] Figure 2 This is a state diagram of the oil scraping member inside the double-duct range hood of the present invention moving to a limit position;

[0031] Figure 3 It is a schematic diagram of the internal side structure of the double-duct range hood of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the oil scraper of the present invention;

[0033] Figure 5 This is a diagram showing the initial state of the oil removal block of the present invention;

[0034] Figure 6 A state diagram of the oil removal block of the present invention moving to a limit position;

[0035] Figure 7 for Figure 6 A magnified schematic diagram of center A.

[0036] In the figure: 1. casing; 2. exhaust duct; 3. oil scraper; 301. oil scraper plate; 302. oil baffle plate; 303. connecting arm; 4. reciprocating drive mechanism; 401. bidirectional screw; 402. servo motor; 5. oil removal member; 501. oil removal block; 502. oil collecting tank; 503. drain pipe; 504. injection assembly; 5041. flow channel; 5042. injection port; 5043. sealing plate; 5044. connecting rope; 5045. compression spring; 5046. infusion tank; 5047. injection hole; 505. dovetail slide; 506. dovetail slider; 507. guide groove; 6. rail groove; 7. flushing mechanism; 701. flushing pipe; 702. spray member; 8. slide rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 7A dual-duct range hood with automatic cleaning function includes a range hood casing 1, two independent exhaust channels 2 are arranged at intervals in the horizontal direction in the casing 1, a fan is arranged at the top of each exhaust channel 2, and a filter is arranged at the bottom of each exhaust channel 2. When the range hood is working, the oil smoke is first filtered through the filter, and then discharged through the exhaust channel 2 and the fan in sequence, and the filtered oil stains and oil droplets flow into the oil cup along the inclined oil guide plate. This is the prior art, and its specific structure and working principle are not repeated here.

[0039] This embodiment further includes two oil scraping members 3, a reciprocating drive mechanism 4, two oil removal members 5 and two flushing mechanisms 7, wherein the two oil scraping members 3 are movably disposed in the two exhaust passages 2 and fit with the front and rear inner walls of the exhaust passages 2. Specifically, Figure 4 As shown, the oil scraper 3 includes two oil scrapers 301 respectively attached to the front inner wall and the rear inner wall of the exhaust channel 2. When the oil scrapers 301 move horizontally, the oil accumulated on the front inner wall or the rear inner wall of the exhaust channel 2 can be scraped off. An oil baffle 302 is fixedly connected to the side where the two oil scrapers 301 are close to each other. The oil scrapers 301 and the oil baffle 302 cooperate to form an L-shaped structure. The L-shaped structure makes it difficult for the scraped oil to overflow laterally. A connecting arm 303 is fixedly connected between the two oil baffles 302, so that the oil scraper 3 is an H-shaped structure as a whole, which can stably move horizontally in the exhaust channel 2 and is not easy to rotate.

[0040] The reciprocating drive mechanism 4 is in transmission connection with the connecting arm 303, and the reciprocating drive mechanism 4 is arranged in the housing 1, and is used to drive the two oil scraping members 3 to move away from or towards each other. Figure 1 and Figure 2 As shown, the reciprocating drive mechanism 4 includes a bidirectional screw 401 that penetrates the two exhaust passages 2 in the horizontal direction and is spirally matched with each connecting arm 303, and a servo motor 402 that is transmission-connected to the bidirectional screw 401 is fixedly installed in the housing 1. When the servo motor 402 is working, the bidirectional screw 401 can be driven to rotate through a pulley transmission structure or a gear transmission structure, and then the two sections of the bidirectional screw 401 that rotate in different directions drive the two connecting arms 303 to move toward and away from each other, thereby cleaning the inside of the two independent exhaust passages 2 synchronously. Other reciprocating mechanisms can also be used as long as the oil scraper 3 can be moved left and right in the exhaust passage 2. This is a prior art and will not be described in detail here.

[0041] In another embodiment of the present application, two bidirectional screws 401 are provided, and the two bidirectional screws 401 are symmetrically distributed front to back and threadedly connected to the connecting arm 303. With this structure, the bidirectional screws 401 can be located on the front and back sides of the exhaust channel 2, avoiding the oil smoke gathering area in the middle of the exhaust channel 2, so that the surface of the bidirectional screws 401 is not easily contaminated with oil stains, ensuring that the structure can be used normally.

[0042] Specifically, the two oil removal members 5 are respectively slidably disposed on the oil accumulation surfaces of the two oil scraping members 3, which are the sides of the two oil scraping members 3 that are away from each other, and are used to gather the oil on the oil accumulation surfaces of the oil scraping members 3 to one place. Figure 4 As shown, the degreasing member 5 includes two degreasing blocks 501 that slide on the oil accumulation surface of the scraper plate 301 and are spaced apart from each other. An oil collecting groove 502 is provided on the side of the two degreasing blocks 501 that are close to each other, for collecting the cleaned oil. A drain pipe 503 that is in communication with the exhaust passage 2 is fixedly connected to the side of the housing 1. When the two degreasing blocks 501 move toward each other and fit together, the two oil collecting grooves 502 cooperate to form a columnar groove that is in communication with the drain pipe 503. A spray assembly 504 that is adapted to the columnar groove is provided on the scraper plate 301. The spray assembly 504 sprays cleaning water, and the oil collected in the columnar groove can be discharged through the drain pipe 503, which is convenient for use. The liquid inlet of the spray assembly 504 is in communication with the external liquid supply unit, and the cleaning water enters the spray assembly 504 through the external liquid supply unit. In this embodiment, the cleaning water can be hot water or a liquid containing a degreasing detergent, which can ensure the cleaning effect.

[0043] Further, such as Figure 5 As shown, a dovetail groove 505 is provided on the oil accumulation surface of the oil scraper 301 in the vertical direction, and a dovetail slider 506 that cooperates with the dovetail groove 505 is fixedly connected to the oil removal block 501. Through the cooperation between the dovetail groove 505 and the dovetail slider 506, the oil removal block 501 can only move up and down along the oil scraper 301, and cannot be separated from the oil scraper 301 laterally. Figure 4 As shown, a guide groove 507 is provided in the middle of the oil scraper 301, which is in communication with the dovetail chute 505. Since the dovetail chute 505 is arranged on the oil accumulation surface of the oil scraper 301, oil will also enter the dovetail chute 505. When the dovetail slider 506 moves in the dovetail chute 505, the oil in the dovetail chute 505 can be pushed into the guide groove 507 for easy cleaning. The outer contour of the guide groove 507 is the same as the outer contour of the columnar groove, and can be aligned with the columnar groove. The injection assembly 504 is arranged in the guide groove 507, which is convenient for flushing the oil in the guide groove 507 and the columnar groove into the sewage pipe 503.

[0044] Furthermore, the injection assembly 504 includes a flow channel 5041 opened in the oil scraper 301 along the vertical direction, the liquid inlet at the lower end of the flow channel 5041 is connected to the external liquid supply unit, and the oil scraper 301 is provided with an injection port 5042 for connecting the flow channel 5041 with the oil collecting tank 502; a sealing plate 5043 is movably inserted in the flow channel 5041, and a connecting rope 5044 is fixedly connected to the upper end of the sealing plate 5043, and one end of the connecting rope 5044 away from the sealing plate 5043 movably passes through the oil scraper 301 in the vertical direction and is fixedly connected to the oil removal block 501, and can move with the oil removal block 501. A compression spring 5045 is sleeved on the connecting rope 5044 to always apply a downward elastic force to the sealing plate 5043. An infusion groove 5046 is provided at the lower end of the sealing plate 5043, and a plurality of injection holes 5047 are evenly distributed on one side of the sealing plate 5043 near the injection port 5042, which are connected to the infusion groove 5046. In a normal state, the sealing plate 5043 is in a low position under the action of the compression spring 5045, and the injection holes 5047 are staggered from the injection port 5042, so that the cleaning water cannot enter the injection port 5042, and the oil stains will not block the injection holes 5047. When the degreasing block 501 moves to the guide groove 507 until it fits together with another degreasing block 501 to form a columnar groove, the sealing plate 5043 can be pulled upward by the connecting rope 5044 so that the injection hole 5047 is aligned with the injection port 5042. At this time, the cleaning water enters the flow channel 5041 through the external liquid supply unit, and then enters the injection hole 5047 through the infusion groove 5046, thereby flushing the oil and dirt gathered in the columnar groove to the drain pipe 503 through the injection hole 5047.

[0045] It should be noted that the specifications of the sealing plate 5043 are consistent with the flow channel 5041, that is, the side of the sealing plate 5043 is always in contact with the inner surface of the flow channel 5041, so that when the injection hole 5047 and the injection port 5042 are misaligned, the liquid cannot leak from the injection port 5042.

[0046] In addition, rail grooves 6 corresponding to the oil removal blocks 501 are provided on the inner wall of the exhaust passage 2, and a slide bar 8 sliding in the corresponding rail groove 6 is fixedly connected to the oil removal block 501; the rail groove 6 is composed of a transverse groove and an inclined groove, so that the oil removal block 501 can intermittently reciprocate up and down along the oil accumulation surface of the oil scraper 301. Specifically, when the two oil scrapers 3 move away from each other, the slide bar 8 moves in the transverse groove for a period of time, and the oil removal block 501 is located at the end of the oil scraper 301. After a period of time, when the slide bar 8 moves into the inclined groove, the change in the movement trajectory will cause the oil removal block 501 to move downward along the oil scraper 301, thereby gathering the oil scraped off by the oil scraper 301 to one place. When the two oil scraping members 3 move toward each other, the slide bar 8 first moves in the inclined groove, so that the oil removal block 501 moves upward along the oil scraping plate 301. When the slide bar 8 moves into the horizontal groove, the oil removal block 501 is located at the end of the oil scraping plate 301 and moves horizontally with the oil scraping plate 301. This is repeated to achieve intermittent up and down reciprocating motion of the oil removal block 501.

[0047] Finally, the two flushing mechanisms 7 are fixedly arranged on the two degreasing parts 5, respectively, and the liquid inlet of each flushing mechanism 7 is connected to the external liquid supply unit. Specifically, the flushing mechanism 7 includes a flushing pipe 701 arranged between two degreasing blocks 501 at the same height, and a plurality of spraying parts 702 are evenly distributed on each flushing pipe 701, and the liquid inlet of each flushing pipe 701 is connected to the external liquid supply unit. The cleaning water enters the spraying part 702 through the flushing pipe 701, and then flushes the interior of the exhaust channel 2 through the spraying part 702. In addition, since the flushing pipe 701 can move synchronously with the degreasing block 501, the interior of the exhaust channel 2 can be fully flushed.

[0048] Furthermore, the spray cleaning part 702 includes two oblique nozzles connected to the flushing pipe 701, and a straight nozzle located between the two oblique nozzles is connected to the flushing pipe 701. When the spray cleaning part 702 moves synchronously with the degreasing block 501, the top wall and fan of the exhaust channel 2, as well as the bottom wall and filter screen of the exhaust channel 2 can be flushed through the straight nozzle, and the left and right inner walls of the exhaust channel 2 can be flushed through the oblique nozzle. The sewage generated by the flushing can flow into the oil cup or pipe along the inclined oil guide plate for discharge. Furthermore, the angle between the oblique nozzle and the straight nozzle is 40°-50°, which can well flush the upper and lower inner walls and the left and right inner walls of the exhaust channel 2.

[0049] In this embodiment, it should be noted that the external liquid supply unit includes a container disposed outside the range hood, in which cleaning water, such as hot water, liquid containing degreasing detergent, etc., is contained, a water pump connected to the container through a pipeline is disposed in the housing 1, a liquid infusion tube connected to the liquid inlet of the flow channel 5041 is fixedly connected to the oil baffle 302, the liquid inlet of the liquid infusion tube is connected to the water pump through a hose, and the liquid inlet of the flushing tube 701 is connected to the liquid infusion tube through a hose. When the water pump is working, the cleaning water can enter the flushing tube 701 or the flow channel 5041 through the liquid infusion tube, the hose, etc.

[0050] The working principle is as follows: In the initial state, the two scraping members 3 are close to each other and fit against the inner wall of the respective exhaust passage 2. Figure 1 As shown, at this time, each oil removal block 501 is located at the end of the oil scraper plate 301. When the inside of the exhaust passage 2 needs to be cleaned, the servo motor 402 works, and drives the bidirectional screw 401 to rotate through the gear transmission structure or the pulley transmission structure, thereby driving the two oil scraping members 3 to move away from each other through the spiral cooperation of the bidirectional screw 401 and the connecting arm 303, and then scraping off the oil stains on the front and rear inner walls of the exhaust passage 2 through the oil scraper plate 301.

[0051] In this process, the oil removal block 501 moves with the oil scraper 301, so that the slide bar 8 moves in the horizontal groove. When the slide bar 8 moves into the inclined groove, the oil removal block 501 moves along the oil scraper 301 to the guide groove 507, so that the oil accumulated on the surface of the oil scraper 301 can be scraped off. When the inclined groove reaches the limit position, the two oil removal blocks 501 fit together, so that the two oil collecting grooves 502 cooperate to form a columnar groove and align with the sewage pipe 503. In the process of the two oil removal blocks 501 fitting together, the connecting rope 5044 pulls the sealing plate 5043 upward, so that the injection hole 5047 is aligned with the injection port 5042, and the cleaning water enters the flow channel 5041 through the external liquid supply unit, and then enters the injection hole 5047 through the infusion groove 5046, so that the oil collected in the guide groove 507 and the columnar groove is sprayed into the sewage pipe 503 through the injection hole 5047 and discharged through the sewage pipe 503.

[0052] During the above process, the flushing pipe 701 always moves synchronously with the degreasing block 501, so that the upper and lower inner walls and the left and right inner walls of the exhaust channel 2 can be fully flushed through the straight nozzle and the inclined nozzle. The sewage generated by the flushing can flow into the oil cup or pipe along the inclined oil guide plate at the bottom of the range hood for discharge.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-duct range hood with automatic cleaning function, comprising a range hood casing (1), wherein two independent exhaust passages (2) are arranged in the casing (1) at intervals in the horizontal direction, characterized in that: Also includes: Two oil scraping members (3), the two oil scraping members (3) being movably disposed in the two exhaust passages (2) and being in contact with the front and rear inner walls of the exhaust passages (2); A reciprocating drive mechanism (4), the reciprocating drive mechanism (4) being arranged in the housing (1) and being used to drive the two oil scraping members (3) to move away from or towards each other; Two oil removal members (5), the two oil removal members (5) being respectively slidably disposed on the oil accumulation surfaces of the two oil scraping members (3) and used for gathering the oil on the oil accumulation surfaces of the oil scraping members (3) into one place; Two flushing mechanisms (7) are respectively fixedly arranged on two oil removal components (5), and the liquid inlet of each flushing mechanism (7) is conductively connected to an external liquid supply unit.

2. The dual-duct range hood with automatic cleaning function according to claim 1, characterized in that: The oil scraper (3) comprises two oil scraper plates (301) respectively fitted with the front inner wall and the rear inner wall of the exhaust passage (2); an oil baffle plate (302) is fixedly connected to the sides of the two oil scraper plates (301) close to each other; the oil scraper plates (301) cooperate with the oil baffle plates (302) to form an L-shaped structure; a connecting arm (303) is fixedly connected between the two oil baffle plates (302); The reciprocating drive mechanism (4) is transmission-connected to the connecting arm (303), and the oil removal member (5) is slidably connected to the oil scraper plate (301).

3. The dual-duct range hood with automatic cleaning function according to claim 2, characterized in that: The reciprocating drive mechanism (4) comprises a bidirectional screw (401) which penetrates the two exhaust passages (2) in a horizontal direction and is spirally matched with each connecting arm (303), and a servo motor (402) which is transmission-connected to the bidirectional screw (401) is fixedly installed in the housing (1).

4. The dual-duct range hood with automatic cleaning function according to claim 2, characterized in that: The degreasing member (5) comprises two degreasing blocks (501) which slide on the oil accumulation surface of the oil scraper (301) and are spaced apart from each other. An oil collecting groove (502) is provided on the side of the two degreasing blocks (501) which are close to each other. A sewage discharge pipe (503) which is in communication with the exhaust passage (2) is fixedly connected to the side of the housing (1). When the two degreasing blocks (501) move towards each other and fit together, the two oil collecting grooves (502) cooperate to form a columnar groove which is in communication with the sewage discharge pipe (503). An injection assembly (504) which is adapted to the columnar groove is provided on the oil scraper (301), and a liquid inlet of the injection assembly (504) is in communication with an external liquid supply unit.

5. The dual-duct range hood with automatic cleaning function according to claim 4, characterized in that: A dovetail groove (505) is provided on the oil accumulation surface of the oil scraper (301) in the vertical direction, a dovetail slider (506) matching the dovetail groove (505) is fixedly connected to the oil removal block (501), a guide groove (507) communicating with the dovetail groove (505) is provided in the middle of the oil scraper (301), the outer contour of the guide groove (507) is the same as the outer contour of the columnar groove, and the injection assembly (504) is arranged in the guide groove (507).

6. The dual-duct range hood with automatic cleaning function according to claim 5, characterized in that: The injection assembly (504) comprises a flow channel (5041) vertically arranged in the oil scraper (301); a liquid inlet at the lower end of the flow channel (5041) is connected to an external liquid supply unit; and an injection port (5042) is arranged on the oil scraper (301) to connect the flow channel (5041) to the oil collecting tank (502); A sealing plate (5043) is movably inserted in the flow channel (5041), and a connecting rope (5044) is fixedly connected to the upper end of the sealing plate (5043). One end of the connecting rope (5044) away from the sealing plate (5043) moves vertically through the oil scraper (301) and is fixedly connected to the oil removal block (501). A compression spring (5045) is sleeved on the connecting rope (5044) for always applying a downward elastic force to the sealing plate (5043); An infusion groove (5046) is provided at the lower end of the sealing plate (5043), and a plurality of injection holes (5047) connected to the infusion groove (5046) are evenly distributed on one side of the sealing plate (5043) close to the injection port (5042).

7. The dual-duct range hood with automatic cleaning function according to claim 4, characterized in that: The inner wall of the exhaust passage (2) is provided with rail grooves (6) corresponding to the oil removal blocks (501) one by one, and a sliding rod (8) is fixedly connected to the oil removal block (501) and slides in the corresponding rail groove (6); The rail groove (6) is composed of a transverse groove and an inclined groove, so that the oil removal block (501) can perform intermittent up and down reciprocating motion along the oil accumulation surface of the oil scraper (301).

8. The dual-duct range hood with automatic cleaning function according to claim 4, characterized in that: The flushing mechanism (7) comprises a flushing pipe (701) arranged between two degreasing blocks (501) at the same height, a plurality of spraying parts (702) are evenly distributed on each flushing pipe (701), and a liquid inlet of each flushing pipe (701) is conductively connected to an external liquid supply unit.

9. The dual-duct range hood with automatic cleaning function according to claim 8, characterized in that: The spray cleaning member (702) comprises two oblique spray heads which are conductively connected to the flushing pipe (701), and a straight spray head located between the two oblique spray heads is conductively connected to the flushing pipe (701).

10. The dual-duct range hood with automatic cleaning function according to claim 9, characterized in that: The angle between the oblique nozzle and the straight nozzle is 40°-50°.

Images