Self-cleaning fireproof environment-friendly oil smoke exhaust hood

Abstract

The utility model relates to the technical field of oil smoke exhaust covers, in particular to a self-cleaning fireproof environment-friendly oil smoke exhaust cover which comprises an oil smoke exhaust box, an oil smoke exhaust plate, an oil smoke exhaust top seat, a fixing buckle and a hanging plate, the oil smoke exhaust plate is arranged on the oil smoke exhaust box, and a plurality of oil smoke exhaust windows are arranged on the oil smoke exhaust plate at equal intervals. A baffle is arranged at the position, located on one side of each smoke suction window, of the inner wall of the smoke exhaust plate, the smoke exhaust top base is arranged on the smoke exhaust box and communicates with the smoke exhaust box, the smoke exhaust hood further comprises a controller, a protection box, a cleaning liquid box, a top box and a cleaning system, the protection box and the top box are both arranged on the smoke exhaust box, and the cleaning liquid box is arranged on the top box. The cleaning liquid box is arranged on the smoke exhaust box and communicates with the top box, and the cleaning system is arranged in the smoke exhaust box; the inner wall of the smoke exhaust box and the inner wall of the machine box can be automatically cleaned when the oil smoke exhaust cover works, workers do not need to manually disassemble and clean the oil smoke exhaust cover at regular intervals, the input amount of labor force is reduced, and normal work of the oil smoke exhaust cover is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fume exhaust hoods, and more specifically, to a self-cleaning, fireproof and environment-friendly oil fume exhaust hood. Background Art

[0002] The oil smoke we usually emit when cooking is a large amount of thermal oxidation decomposition products produced by cooking oil and food under high temperature conditions. When cooking, the oil is heated. When the temperature reaches the smoking point of cooking oil 170°C, blue smoke of initial decomposition appears. As the temperature continues to rise, the decomposition rate accelerates. When the temperature reaches 250°C, a large amount of oil smoke appears, accompanied by a pungent smell. Oil smoke is harmful, and people use range hoods to discharge oil smoke. In the prior art, integrated range hoods are particularly popular among people.

[0003] The range hood is usually installed on the wall above the kitchen stove, and the fumes are exhausted through the range hood. The existing range hood requires staff to regularly dismantle the fumes attached to the inside to clean them, which is very inconvenient and the entire cleaning process takes a long time. Utility Model Content

[0004] The purpose of the utility model is to provide a self-cleaning, fireproof and environmentally friendly fume exhaust hood to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-cleaning, fireproof and environmentally friendly oil fume exhaust hood, comprising an exhaust box, an exhaust plate, an exhaust top seat, a fixing buckle and a hanging plate, wherein the exhaust plate is arranged on the exhaust box, and a plurality of smoking windows are arranged equidistantly on the exhaust plate, and a baffle is arranged on the inner wall of the exhaust plate on one side of each smoking window, the exhaust top seat is arranged on the exhaust box and the two are connected, the fixing buckles are in a plurality and are symmetrically arranged on the exhaust box, and the hanging plate is detachably arranged on the fixing buckle, the exhaust fume hood also comprises a controller, a protective box, a cleaning liquid tank, a top box and a cleaning system, the protective item and the top box are both arranged on the exhaust box, the cleaning liquid tank is arranged on the exhaust box and is connected with the top box, the cleaning system is arranged in the exhaust box, and when the airflow is discharged from the exhaust top seat, the cleaning system is controlled to work and the inner wall of the exhaust box is cleaned;

[0007] The cleaning system includes a driving component, a cleaning execution component and a liquid pumping structure. The cleaning execution components are in two groups and are symmetrically and movably arranged in the smoke exhaust box for cleaning the inner wall of the smoke exhaust box. The driving component is arranged in the smoke exhaust box and connected to the cleaning execution structure for controlling the operation of the cleaning execution component. The liquid pumping structure is arranged between the cleaning execution component and the smoke exhaust box and is connected to the cleaning liquid tank. When the cleaning execution component moves in the smoke exhaust box, it controls the operation of the liquid pumping structure to input the cleaning liquid in the cleaning liquid tank into the cleaning execution component.

[0008] A further technical solution of the present application is as follows: each group of the cleaning execution components includes a cleaning seat, a liquid spray seat and a top scraping structure; the cleaning seat is movably arranged in the smoke exhaust box and matches the cross-sectional shape of the smoke exhaust box; the cleaning seat is connected to a driving component; there are several liquid spray seats and they are arranged around the cleaning seat; the top scraping structure is movably arranged in the smoke exhaust box and connected to the driving component, so as to scrape off the cleaning liquid on the top of the smoke exhaust box.

[0009] A further technical solution of the present application is as follows: the driving assembly includes a rotating blade, a driving wheel, a driven wheel and a bidirectional reciprocating screw, the rotating blade being movably arranged in the smoke exhaust top seat, the driving wheel and the driven wheel being movably arranged on the smoke exhaust box and located in the protective box, the driving wheel and the rotating blade being coaxially connected, the driven wheel and the driving wheel being meshed with each other, the bidirectional reciprocating screw being movably arranged in the smoke exhaust box and cooperating with the cleaning seat thread, and the driven wheel and the bidirectional reciprocating screw being coaxially connected.

[0010] A further technical solution of the present application is as follows: the top scraping structure includes a winding roller, a guide wheel, a belt and a cleaning shovel, the cleaning shovel is movably arranged on the top wall in the smoke exhaust box and the two are elastically connected, the winding roller is movably arranged in the smoke exhaust box and is coaxially connected to the driving wheel, the guide wheel is arranged on the smoke exhaust box, the belt is wound on the winding roller and its free end is connected to the cleaning shovel, and the guide wheel and belt are slidably matched.

[0011] The present application has a further technical solution: the liquid pumping structure includes a hollow tube, a piston rod, a driving wheel and a transmission member, the hollow tube is arranged on a cleaning seat, an input hole and an output hole are arranged on the hollow tube, and a one-way valve is arranged in the input hole and the output hole, the input hole is connected to the cleaning liquid tank, and the output hole is connected to the liquid spraying seat, the piston rod is movably arranged in the hollow tube, the driving wheel is movably arranged on the cleaning seat, the transmission member is arranged between the driving wheel and the piston rod, and when the driving wheel rotates, the piston rod is controlled to reciprocate in the hollow tube through the transmission member.

[0012] The present application has a further technical solution: the transmission part includes a resistance rod and an adjustment disk, the adjustment disk is arranged on the driving wheel and concentrically arranged between the two, the resistance rod is movably arranged on one side of the hollow tube and one end is connected to the piston rod, the other end of the resistance rod is slidably matched with the outer contour of the adjustment disk, and a plurality of protrusions are arranged on the outer contour of the adjustment disk, and the protrusions are located on the moving path of the resistance rod.

[0013] The present application has a further technical solution: a resistance reducing member is provided between the abutment rod and the outer contour of the positioning disk, so as to reduce the friction resistance between the abutment rod and the outer contour of the positioning disk.

[0014] A further technical solution of the present application is that the exhaust hood also includes an adsorption and fixing component, which is arranged on the smoke exhaust box and connected to the driving component. When the driving component is working, it controls the adsorption and fixing component to work and adsorb and fix the smoke exhaust box on the wall.

[0015] A further technical solution of the present application is as follows: the adsorption and fixing component includes a fixing plate, a suction cup and an exhaust structure, the fixing plates are in multiple numbers and are symmetrically arranged on one side of the smoke exhaust box close to the suspension plate, each of the fixing plates is arrayed with multiple suction cups, the exhaust structure is arranged on the smoke exhaust box and connects the driving component and the suction cup, and when the driving component is working, it controls the exhaust structure to work and exhausts the air between the suction cup and the wall.

[0016] A further technical solution of the present application is as follows: the exhaust structure comprises a sleeve box, an inner box, an exhaust chamber, a slide plate, a main channel and a branch channel; the inner box is movably arranged in the smoke exhaust box and is coaxially connected to the driving wheel; the sleeve box is sleeved on the outer wall of the inner box and is connected to the smoke exhaust box; there are two exhaust chambers and they are symmetrically arranged in the inner box; the main channel is arranged in the inner box and is connected to the sleeve box; the sleeve box is connected to the suction cup; and the main channel is connected to the exhaust chamber through the branch channel.

[0017] Compared with the prior art, the technical solution provided by the embodiment of the utility model has the following beneficial effects:

[0018] The embodiment of the utility model provides a cleaning execution component, a driving component, a scraping top component and an adsorption fixing component, and adopts a linked mechanical structure to convert the power of the airflow drawn into the smoke exhaust box when the exhaust hood is working into the power of the driving component. When the driving component is working, the cleaning execution component, the scraping top component and the adsorption fixing component can be controlled to work simultaneously. On the one hand, the inner wall of the smoke exhaust box can be automatically cleaned when the exhaust hood is working, without the need for staff to manually disassemble and clean it regularly, thus reducing the labor input and ensuring the normal operation of the exhaust hood. On the other hand, the stability of the entire device when the exhaust hood is working can be ensured to avoid the loose connection between the exhaust hood and the wall caused by the vibration of the exhaust hood when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a self-cleaning, fireproof and environmentally friendly fume exhaust hood in an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the smoke exhaust plate in the self-cleaning, fireproof and environmentally friendly smoke exhaust hood in the embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a cleaning system in a self-cleaning, fireproof and environmentally friendly fume exhaust hood in an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the cleaning execution component in the self-cleaning fireproof and environmentally friendly fume exhaust hood in the embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the liquid extraction structure in the self-cleaning fireproof and environmentally friendly fume exhaust hood in the embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the top scraping structure in the self-cleaning fireproof and environmentally friendly fume exhaust hood in the embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the exhaust structure in the self-cleaning, fireproof and environmentally friendly fume exhaust hood in the embodiment of the utility model;

[0026] Figure 8 It is a partial rear view of the self-cleaning, fireproof and environmentally friendly fume exhaust hood in the embodiment of the utility model.

[0027] Explanation of the symbols in the schematic diagram:

[0028] 1-smoke exhaust box, 2-smoke exhaust plate, 3-smoking window, 4-protective box, 5-top box, 6-smoke exhaust top seat, 7-controller, 8-cleaning liquid tank, 9-baffle, 10-cleaning seat, 11-rotating blade, 12-casing box, 13-winding roller, 14-belt, 15-spraying seat, 16-driving wheel, 17-bidirectional reciprocating screw, 18-driving wheel, 19-driven wheel, 20-guide wheel, 21-cleaning shovel, 22-positioning disk, 23-resistance rod, 24-roller, 25-hollow tube, 26-piston rod, 27-inner box, 28-exhaust chamber, 29-slide plate, 30-main channel, 31-diverter channel, 32-suspension plate, 33-fixing buckle, 34-fixing plate, 35-suction cup. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described below in combination with the embodiments.

[0030] See also Figure 1-Figure 8 In one embodiment of the present application, a self-cleaning, fireproof and environmentally friendly oil fume exhaust hood comprises an exhaust box 1, an exhaust plate 2, an exhaust top seat 6, a fixing buckle 33 and a hanging plate 32, wherein the exhaust plate 2 is arranged on the exhaust box 1, and a plurality of smoking windows 3 are arranged equidistantly on the exhaust plate 2, and a baffle 9 is arranged on the inner wall of the exhaust plate 2 on one side of each smoking window 3, the exhaust top seat 6 is arranged on the exhaust box 1 and the two are connected, the fixing buckles 33 are several in number and are symmetrically arranged on the exhaust box 1, and the hanging plate 32 is detachably arranged on the fixing buckle 33, the exhaust fume hood further comprises a controller 7, a protective box 4, a cleaning liquid tank 8, a top box 5 and a cleaning system, the protective item and the top box 5 are both arranged on the exhaust box 1, the cleaning liquid tank 8 is arranged on the exhaust box 1 and is connected to the top box 5, the cleaning system is arranged in the exhaust box 1, and when the airflow is discharged from the exhaust top seat 6, the cleaning system is controlled to work and the inner wall of the exhaust box 1 is cleaned;

[0031] The cleaning system includes a driving component, a cleaning execution component and a liquid pumping structure. The cleaning execution components are in two groups and are symmetrically and movably arranged in the smoke exhaust box 1, and are used to clean the inner wall of the smoke exhaust box 1. The driving component is arranged in the smoke exhaust box 1 and is connected to the cleaning execution structure, and is used to control the operation of the cleaning execution component. The liquid pumping structure is arranged between the cleaning execution component and the smoke exhaust box 1 and is connected to the cleaning liquid tank 8. When the cleaning execution component moves in the smoke exhaust box 1, it controls the operation of the liquid pumping structure to input the cleaning liquid in the cleaning liquid tank 8 into the cleaning execution component.

[0032] In a specific case of the present embodiment, each group of the cleaning execution components includes a cleaning seat 10, a liquid spray seat 15 and a top scraping structure. The cleaning seat 10 is movably arranged in the smoke exhaust box 1 and matches the cross-sectional shape of the smoke exhaust box 1. The cleaning seat 10 is connected to a driving component. There are several liquid spray seats 15 and they are arranged around the cleaning seat 10. The top scraping structure is movably arranged in the smoke exhaust box 1 and connected to the driving component, so as to scrape off the cleaning liquid on the top of the smoke exhaust box 1.

[0033] In another specific case of the present embodiment, the driving assembly includes a rotating blade 11, a driving wheel 18, a driven wheel 19 and a bidirectional reciprocating screw 17. The rotating blade 11 is movably arranged in the smoke exhaust top seat 6. The driving wheel 18 and the driven wheel 19 are both movably arranged on the smoke exhaust box 1 and are located in the protective box 4. The driving wheel 18 and the rotating blade 11 are coaxially connected. The driven wheel 19 and the driving wheel 18 are meshed with each other. The bidirectional reciprocating screw 17 is movably arranged in the smoke exhaust box 1 and is threadedly matched with the cleaning seat 10. The driven wheel 19 and the bidirectional reciprocating screw 17 are coaxially connected.

[0034] In actual application, the hanging plate 32 is fixed on the wall, and the whole exhaust hood is fixed by the cooperation between the hanging plate 32 and the fixing buckle 33. The exhaust hood is controlled by the controller 7 so that the oil smoke enters the exhaust box 1 along the smoking window 3 and is finally discharged from the exhaust top seat 6. In this process, the smoke and the rotating blade 11 conflict with each other, driving the rotating blade 11 to rotate and control the driving wheel 18 to rotate. Under the meshing action between the driving wheel 18 and the driven wheel 19, the driven wheel 19 and the bidirectional reciprocating screw 17 can be driven to rotate. Under the action of the threaded cooperation between the reciprocating screw 17 and the cleaning seat 10, the cleaning seats 10 on both sides of the smoke exhaust box 1 are driven to reciprocate. At the same time, the liquid extraction structure is driven to input the cleaning liquid in the cleaning liquid tank 8 into the liquid spray seat 15 and finally spray it onto the inner wall of the smoke exhaust box 1, thereby realizing the liquid spray cleaning work on the inner wall of the smoke exhaust box 1, so that a layer of cleaning foam is attached to the inner wall of the smoke exhaust box 1. During the rotation of the driving wheel 18, the top scraping structure can be controlled to work synchronously to scrape off the foam and cleaning liquid on the top of the smoke exhaust box 1, thereby realizing the automatic cleaning work of the inner wall of the smoke exhaust box 1.

[0035] See also Figure 1 , Figure 3 , Figure 4 as well as Figure 6 As another preferred embodiment of the present application, the scraping structure includes a winding roller 13, a guide wheel 20, a belt 14 and a cleaning shovel 21. The cleaning shovel 21 is movably arranged on the top wall of the smoke exhaust box 1 and the two are elastically connected. The winding roller 13 is movably arranged in the smoke exhaust box 1 and is coaxially connected to the driving wheel 18. The guide wheel 20 is arranged on the smoke exhaust box 1. The belt 14 is wound on the winding roller 13 and its free end is connected to the cleaning shovel 21. The guide wheel 20 and the belt 14 are slidably matched.

[0036] In a specific case of the present embodiment, the liquid pumping structure includes a hollow tube 25, a piston rod 26, a driving wheel 16 and a transmission member. The hollow tube 25 is arranged on the cleaning seat 10. An input hole and an output hole are arranged on the hollow tube 25. Both the input hole and the output hole are provided with a one-way valve. The input hole is connected to the cleaning liquid tank 8, and the output hole is connected to the liquid spraying seat 15. The piston rod 26 is movably arranged in the hollow tube 25, and the driving wheel 16 is movably arranged on the cleaning seat 10. The transmission member is arranged between the driving wheel 16 and the piston rod 26. When the driving wheel 16 rotates, the piston rod 26 is controlled by the transmission member to reciprocate in the hollow tube 25.

[0037] In another specific case of this embodiment, the transmission member includes a resistance rod 23 and an adjustment disk 22. The adjustment disk 22 is arranged on the driving wheel 16 and is concentrically arranged between the two. The resistance rod 23 is movably arranged on one side of the hollow tube 25 and one end is connected to the piston rod 26. The other end of the resistance rod 23 is slidably matched with the outer contour of the adjustment disk 22. A plurality of protrusions are arranged on the outer contour of the adjustment disk 22, and the protrusions are located on the moving path of the resistance rod 23.

[0038] It should be supplemented that a resistance reducing member is provided between the abutment rod 23 and the outer contour of the positioning disk 22 to reduce the friction resistance between the abutment rod 23 and the outer contour of the positioning disk 22 .

[0039] It should be particularly noted that the resistance reducing member in the present embodiment may be a ball or a roller 24. In the present embodiment, the resistance reducing member is preferably a roller 24. The roller 24 is movably arranged on the resistance rod 23 and slidingly cooperates with the outer contour of the adjustment disk 22. As for the specific model parameters of the roller 24, the best choice can be made according to the actual situation, and they are not listed one by one here.

[0040] In the process of the rotating blade 11 rotating to drive the cleaning seat 10 to reciprocate along the inside of the smoke exhaust box 1, the driving wheel 16 can be driven to rotate under the action of the friction resistance between the driving wheel 16 and the inner wall of the smoke exhaust box 1, so that the protrusions on the adjustment plate 22 successively meet the rollers 24, driving the resistance rod 23 and the piston rod 26 to reciprocate relative to the hollow tube 25, and then the cleaning liquid in the cleaning liquid tank 8 can be drawn into the hollow tube 25 and finally squeezed into the liquid spraying seat 15 and sprayed onto the inner wall of the smoke exhaust box 1, thereby completing the liquid spraying cleaning work of the inner wall of the smoke exhaust box 1, and in the process of the rotation of the driving wheel 18, the winding roller 13 can be driven to rotate, and the winding roller 13 rotates to rewind the belt 14, thereby driving the cleaning shovel 21 to move along the inner top wall of the smoke exhaust box 1, so that the cleaning liquid or foam on the top wall of the smoke exhaust box 1 can be pushed to one side of the smoke exhaust box 1, and the cleaning liquid on the top wall of the smoke exhaust box 1 is prevented from dripping along the smoking window 3.

[0041] See also Figure 1 , Figure 3 , Figure 4 , Figure 7 as well as Figure 8 As another preferred embodiment of the present application, the exhaust hood also includes an adsorption and fixing component, which is arranged on the smoke exhaust box 1 and connected to the driving component. When the driving component is working, it controls the adsorption and fixing component to work and adsorb and fix the smoke exhaust box 1 on the wall.

[0042] In a specific case of the present embodiment, the adsorption and fixing component includes a fixing plate 34, a suction cup and an exhaust structure. The fixing plates 34 are in multiple numbers and are symmetrically arranged on one side of the smoke exhaust box 1 close to the suspension plate 32. Each of the fixing plates 34 is arrayed with multiple suction cups. The exhaust structure is arranged on the smoke exhaust box 1 and connects the driving component and the suction cup. When the driving component is working, it controls the exhaust structure to work and exhausts the air between the suction cup and the wall.

[0043] In another specific case of the present embodiment, the exhaust structure includes a sleeve box 12, an inner box 27, an exhaust chamber 28, a slide plate 29, a main channel 30 and a branch channel 31. The inner box 27 is movably arranged in the smoke exhaust box 1 and is coaxially connected to the driving wheel 18. The sleeve box 12 is sleeved on the outer wall of the inner box 27 and is connected to the smoke exhaust box 1. There are two exhaust chambers 28 and they are symmetrically arranged in the inner box 27. The main channel 30 is arranged in the inner box 27 and is connected to the sleeve box 12. The sleeve box 12 is connected to the suction cup. The main channel 30 is connected to the exhaust chamber 28 through the branch channel 31.

[0044] In the process of the rotating blade 11 driving the driving wheel 18 to rotate, the inner box 27 can be driven to rotate relative to the outer box 12. When the inner box 27 rotates, the slide plate 29 is affected by the centrifugal force, which can drive the slide plate 29 to connect along the suction chamber 28, and then draw the air between the suction cup and the wall into the suction chamber 28 along the main channel 30 and the branch channel 31, so that the entire smoke exhaust box 1 can be fixed to the wall when the exhaust hood is working, and the greater the intensity of the exhaust hood working, the greater the displacement of the slide plate 29, and the greater the adsorption force between the suction cup and the wall, thereby improving the stability of the entire exhaust hood when working and reducing the burden of the hanging plate 32.

[0045] How this application works:

[0046] The hanging plate 32 is fixed to the wall, and the whole exhaust hood is fixed by the cooperation between the hanging plate 32 and the fixing buckle 33. The exhaust hood is controlled by the controller 7 so that the oil smoke enters the exhaust box 1 along the smoking window 3 and is finally discharged from the exhaust top seat 6. In this process, the smoke and the rotating blade 11 conflict with each other, driving the rotating blade 11 to rotate and control the driving wheel 18 to rotate. Under the meshing action between the driving wheel 18 and the driven wheel 19, the driven wheel 19 and the two-way reciprocating screw 17 can be driven to rotate. Under the threaded cooperation between the two-way reciprocating screw 17 and the cleaning seat 10, the cleaning seats 10 on both sides of the exhaust box 1 are driven to reciprocate. In this process, the friction between the driving wheel 16 and the inner wall of the exhaust box 1 can be Under the action of friction resistance, the driving wheel 16 is driven to rotate, so that the protrusions on the adjustment disk 22 successively meet the rollers 24, driving the resistance rod 23 and the piston rod 26 to reciprocate relative to the hollow tube 25, so that the cleaning liquid in the cleaning liquid tank 8 can be drawn into the hollow tube 25 and finally squeezed into the liquid spray seat 15 and sprayed onto the inner wall of the smoke exhaust box 1, thereby completing the liquid spray cleaning work of the inner wall of the smoke exhaust box 1, and in the process of the rotation of the active wheel 18, it can drive the winding roller 13 to rotate, and the winding roller 13 rotates to rewind the belt 14, thereby driving the cleaning shovel 21 to move along the inner top wall of the smoke exhaust box 1, so that the cleaning liquid or foam on the top wall of the smoke exhaust box 1 can be pushed to one side of the smoke exhaust box 1, to prevent the cleaning liquid on the top wall of the smoke exhaust box 1 from dripping along the smoking window 3. In the process of the rotating blade 11 driving the driving wheel 18 to rotate, the inner box 27 can be driven to rotate relative to the outer box 12. When the inner box 27 rotates, the slide plate 29 is affected by the centrifugal force, which can drive the slide plate 29 to connect along the suction chamber 28, and then draw the air between the suction cup and the wall into the suction chamber 28 along the main channel 30 and the branch channel 31, so that the entire smoke exhaust box 1 can be fixed to the wall when the exhaust hood is working, and the greater the intensity of the exhaust hood working, the greater the displacement of the slide plate 29, and the greater the adsorption force between the suction cup and the wall, thereby improving the stability of the entire exhaust hood when working and reducing the burden of the hanging plate 32.

[0047] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-cleaning, fireproof and environmentally friendly oil fume exhaust hood, comprising a smoke exhaust box, a smoke exhaust plate, a smoke exhaust top seat, a fixing buckle and a hanging plate, wherein the smoke exhaust plate is arranged on the smoke exhaust box, and a plurality of smoking windows are arranged equidistantly on the smoke exhaust plate, and a baffle is arranged on the inner wall of the smoke exhaust plate on one side of each smoking window, the smoke exhaust top seat is arranged on the smoke exhaust box and the two are connected, the fixing buckles are in plurality and symmetrically arranged on the smoke exhaust box, and the hanging plate is detachably arranged on the fixing buckle, characterized in that: The fume hood also includes a controller, a protection box, a cleaning liquid tank, a top box and a cleaning system. The protection box and the top box are both arranged on the smoke exhaust box. The cleaning liquid tank is arranged on the smoke exhaust box and is connected with the top box. The cleaning system is arranged in the smoke exhaust box. When the airflow is discharged from the smoke exhaust top seat, the cleaning system is controlled to work and the inner wall of the smoke exhaust box is cleaned.

2. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 1 is characterized in that: The cleaning system includes a driving component, a cleaning execution component and a liquid pumping structure. The cleaning execution components are in two groups and are symmetrically and movably arranged in the smoke exhaust box for cleaning the inner wall of the smoke exhaust box. The driving component is arranged in the smoke exhaust box and connected to the cleaning execution structure for controlling the operation of the cleaning execution component. The liquid pumping structure is arranged between the cleaning execution component and the smoke exhaust box and is connected to the cleaning liquid tank. When the cleaning execution component moves in the smoke exhaust box, it controls the operation of the liquid pumping structure to input the cleaning liquid in the cleaning liquid tank into the cleaning execution component.

3. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 2 is characterized in that: Each group of the cleaning execution components includes a cleaning seat, a liquid spray seat and a top scraping structure. The cleaning seat is movably arranged in the smoke exhaust box and matches the cross-sectional shape of the smoke exhaust box. The cleaning seat is connected to a driving component. There are several liquid spray seats and they are arranged around the cleaning seat. The top scraping structure is movably arranged in the smoke exhaust box and connected to the driving component to scrape off the cleaning liquid on the top of the smoke exhaust box.

4. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 3 is characterized in that: The driving assembly includes a rotating blade, a driving wheel, a driven wheel and a bidirectional reciprocating screw. The rotating blade is movably arranged in the smoke exhaust top seat. The driving wheel and the driven wheel are both movably arranged on the smoke exhaust box and located in the protection box. The driving wheel and the rotating blade are coaxially connected. The driven wheel and the driving wheel are meshed. The bidirectional reciprocating screw is movably arranged in the smoke exhaust box and cooperates with the cleaning seat thread. The driven wheel and the bidirectional reciprocating screw are coaxially connected.

5. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 4 is characterized in that: The scraping top structure includes a winding roller, a guide wheel, a belt and a cleaning shovel. The cleaning shovel is movably arranged on the top wall of the smoke exhaust box and the two are elastically connected. The winding roller is movably arranged in the smoke exhaust box and is coaxially connected to the driving wheel. The guide wheel is arranged on the smoke exhaust box. The belt is wound on the winding roller and its free end is connected to the cleaning shovel. The guide wheel and the belt are slidably matched.

6. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 3 is characterized in that: The liquid pumping structure includes a hollow tube, a piston rod, a driving wheel and a transmission member. The hollow tube is arranged on a cleaning seat. An input hole and an output hole are arranged on the hollow tube. Both the input hole and the output hole are provided with a one-way valve. The input hole is connected to a cleaning liquid tank, and the output hole is connected to a liquid spraying seat. The piston rod is movably arranged in the hollow tube, and the driving wheel is movably arranged on the cleaning seat. The transmission member is arranged between the driving wheel and the piston rod. When the driving wheel rotates, the piston rod is controlled to reciprocate in the hollow tube through the transmission member.

7. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 6 is characterized in that: The transmission member includes a resistance rod and an adjustment disk, the adjustment disk is arranged on the driving wheel and concentrically arranged between the two, the resistance rod is movably arranged on one side of the hollow tube and one end is connected to the piston rod, the other end of the resistance rod is slidably matched with the outer contour of the adjustment disk, a plurality of protrusions are arranged on the outer contour of the adjustment disk, and the protrusions are located on the moving path of the resistance rod, and a resistance reducing member is arranged between the resistance rod and the outer contour of the adjustment disk, which is used to reduce the friction resistance between the resistance rod and the outer contour of the adjustment disk.

8. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 4 is characterized in that: The fume exhaust hood also includes an adsorption and fixing component, which is arranged on the smoke exhaust box and connected to the driving component. When the driving component is working, it controls the adsorption and fixing component to work and adsorb and fix the smoke exhaust box on the wall.

9. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 8, characterized in that: The adsorption and fixing component includes a fixing plate, a suction cup and an exhaust structure. There are several fixing plates and they are symmetrically arranged on one side of the smoke exhaust box close to the hanging plate. Several suction cups are arranged in an array on each of the fixing plates. The exhaust structure is arranged on the smoke exhaust box and connects the driving component and the suction cup. When the driving component is working, it controls the exhaust structure to work and exhausts the air between the suction cup and the wall.

10. The self-cleaning, fireproof and environmentally friendly fume exhaust hood according to claim 9, characterized in that: The exhaust structure includes a sleeve box, an inner box, an exhaust cavity, a slide plate, a main channel and a branch channel. The inner box is movably arranged in the smoke exhaust box and is coaxially connected to the driving wheel. The sleeve box is sleeved on the outer wall of the inner box and is connected to the smoke exhaust box. There are two exhaust cavities and they are symmetrically arranged in the inner box. The main channel is arranged in the inner box and is connected to the sleeve box. The sleeve box is connected to the suction cup, and the main channel is connected to the exhaust cavity through the branch channel.

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