Square oven with oil fume self-circulation purification function

Abstract

The application provides a square oven with oil fume self-circulation purification function, and relates to the technical field of air purification, which comprises an oven body, a plurality of air blowing holes arranged on one side of the oven body, a plurality of air suction holes arranged on the other side of the oven body, a plurality of air exhaust holes arranged on the oven body, a fan and a plasma purification module arranged in the oven body, a wind power distribution assembly arranged on the air outlet of the plasma purification module, the wind power distribution assembly being used for conveying the purified air in two ways, one way being that the air is blown out through the air blowing holes to carry oil fume into the air suction holes, and the other way being that the air is exhausted out through the air exhaust holes. The internal circulation structure of the side air blowing smoke aggregation and the other side air suction cancels the smoke exhaust pipeline above the oven body, does not block the dining sight, the side airflow aggregates the floating oil fume to the air suction holes, does not need a high-power fan to exhaust, effectively reduces the power consumption and noise of the fan, greatly saves the decoration cost of the store, does not need to purchase a purification equipment, and can meet the environmental protection requirement.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically a square oven with a self-circulating oil fume purification function. Background Technology

[0002] Commercial square grills are commonly used processing equipment in the barbecue catering industry, and are widely used in barbecue restaurants, Western restaurants, food stalls and other business scenarios. In the high-temperature grilling of meat products, pastries and other ingredients, the evaporation of oil due to heat will continuously generate a large amount of oil fumes. At present, the oil fume treatment methods of the mainstream square grills on the market are divided into two types: top exhaust and bottom exhaust. Both rely on external exhaust pipes to directly discharge oil fumes to the outside, which is the common exhaust method of commercial grills at this stage.

[0003] Both existing top and bottom exhaust systems have numerous problems. Top exhaust pipes are located directly above the oven, obstructing diners' view and ruining the overall aesthetic of the store. Bottom exhaust, while not obstructed by pipes, relies on high-powered fans to increase airflow for exhaust, resulting in high energy consumption and noise. Both exhaust methods require businesses to pre-install exhaust pipes, leading to high renovation costs. During off-peak seasons, the main fans still need to be fully operational, resulting in high wasted energy consumption. Furthermore, direct exhaust of fumes easily pollutes the atmosphere, and to meet environmental emission standards, additional external purification devices must be installed, further increasing costs. Summary of the Invention

[0004] This invention provides a square oven with a self-circulating and purifying function for oil fumes, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention discloses a square oven with a self-circulating purification function for oil fumes, including an oven body. A plurality of air blowing holes are provided on one side of the oven body, and a plurality of air suction holes are provided on the other side of the oven body. A plurality of exhaust holes are also provided on the oven body. A fan and a plasma purification module are provided inside the oven body. The air outlet of the plasma purification module is provided with a wind distribution component. The wind distribution component is used to deliver the purified air in two paths. One path is blown out through the plurality of air blowing holes, carrying the oil fumes into the plurality of air suction holes, and the other path is discharged outward through the plurality of exhaust holes.

[0006] Using the above technical solution: the oil fumes generated during the roasting of food are gathered by the airflow from the blower holes and drawn into the oven through the suction holes. The oil fumes are then sent to the plasma purification module for purification. The purified gas is then divided by the wind distribution component, with one path circulating to gather the smoke and the other path being discharged from the exhaust holes, thus achieving closed-loop self-circulation purification of the oil fumes inside the oven.

[0007] Preferably, a horizontal plate and a vertical plate are fixedly installed on the lower inner wall of the oven body. The horizontal plate and the front side wall of the oven body form a first cavity, in which a fan is installed. The horizontal plate and the rear side wall of the oven body form a second cavity, in which a plasma purification module is installed. The vertical plate and the right side wall of the oven body form a third cavity. A through groove is opened on the vertical plate, and the air outlet of the plasma purification module faces the through groove.

[0008] The above technical solution divides the furnace body into three chambers using horizontal and vertical plates, allowing for the zoned arrangement of the fan and plasma purification module, standardizing the internal airflow direction, and reducing air pressure loss.

[0009] Preferably, a filter screen is provided on the left side of the plasma purification module, and an oil collection box is installed through the rear end of the plasma purification module. The filter screen is detachably connected to the horizontal plate and the oil collection box. An oblique wind baffle is provided on the left side of the filter screen, and the air outlet of the fan passes through the horizontal plate and faces the wind baffle.

[0010] Using the above technical solution: the oil fumes first pass through a filter screen to trap large oil particles, then the plasma purification module purifies the oil fumes, and the oil stains collect downwards into the oil collection box, making cleaning more convenient.

[0011] Preferably, the oven body is provided with a baking tray mounting slot, a baking tray is provided at the lower end of the baking tray mounting slot, a mounting frame is provided at the lower end of the baking tray, a heating element is provided inside the mounting frame, the mounting frame is installed on the horizontal plate and the filter screen, a suction plate is installed at the left end of the baking tray mounting slot, the suction plate is provided with several suction holes, and a vertical plate is fixedly connected to the right end of the baking tray mounting slot, the vertical plate is provided with several blowing holes.

[0012] Preferably, the suction plate, the mounting frame, and the left side wall of the oven body form a fourth cavity, which is connected to the first cavity.

[0013] The above technical solution is adopted: the mounting frame is integrated with the horizontal plate and filter screen, making the structure more compact; the fourth cavity is connected to the ventilation fan cavity, which shortens the oil fume extraction path, reduces wind pressure loss, and effectively prevents oil fumes from leaking out of the baking area.

[0014] Preferably, the wind power distribution assembly includes a distribution box, which is installed on the through slot. Several exhaust holes are provided on the lower side wall of the fourth cavity. A cover plate is hinged to the distribution box, and a hinge joint one is installed on the cover plate. Connecting rods are symmetrically hinged to the hinge joint one. A fixed frame is also fixedly installed on the vertical plate. A threaded rod is rotatably installed in the fixed frame. A moving block is threadedly connected to the threaded rod. A hinge joint two is installed on the moving block. The hinge joint two is hinged to the connecting rod.

[0015] The above technical solution uses a screw-connecting mechanism to precisely control the opening and closing range of the cover plate, and can flexibly switch the distribution ratio of circulating air and exhaust air.

[0016] Preferably, moving grooves are symmetrically provided on the fixed frame, a lifting rod is fixedly provided on the moving block, the lifting rod passes through the moving groove, and the lifting rod is slidably connected with the moving groove; a drive box is also fixedly provided on the vertical plate, the threaded rod rotatably extends into the drive box, a first bevel gear is fixedly provided at the upper end of the threaded rod, a second bevel gear is engaged and connected to the first bevel gear, a rotating rod is fixedly provided on the second bevel gear, the rotating rod rotatably passes through the right side wall of the oven body, and a knob is fixedly provided at the right end of the rotating rod.

[0017] Adopting the above technical solution: the externally arranged knob is matched with bevel gear commutation transmission, the air volume adjustment can be completed outside the oven body, which is convenient for operation; the lifting rod is matched with the moving groove, the screw transmission operates stably, and the adjustment accuracy is high.

[0018] Preferably, air boxes are symmetrically and fixedly provided on the vertical plate, a pushing plate is slidably provided in the air box, a pushing rod is fixedly provided at the upper end of the pushing plate, a sliding block is fixedly provided at the upper end of the pushing rod, sliding frames are also symmetrically provided on the vertical plate, the sliding block is slidably arranged in the sliding frame, a moving rod is fixedly provided at the upper end of the sliding block, a displacement frame is fixedly connected to the upper end of the moving rod, and the displacement frame is used for changing the blowing height of a plurality of blowing holes; a driving rod is fixedly provided on the lifting rod, the driving rod slidably extends into the air box, and the driving rod is fixedly connected with the pushing plate.

[0019] Adopting the above technical solution: the displacement frame is driven by the lifting rod component for air volume adjustment, the blowing height can be switched synchronously without additional power components, and the linked control of air volume and air curtain height is realized.

[0020] Preferably, a first air pipe is penetratingly connected to the left air box, the first air pipe passes through the first cavity and extends into the fourth cavity, wind blocking plates are symmetrically and slidably arranged on the air suction plate, a connecting rod is fixedly arranged at one end of the wind blocking plate, a sliding rod is fixedly arranged on the connecting rod, a mounting box is fixedly arranged on the air suction plate, the sliding rod slidably extends into the mounting box, piston plates are symmetrically and slidably arranged in the mounting box, the sliding rod is fixedly connected with the piston plates, a spring is fixedly arranged between the two piston plates, and the first air pipe is penetratingly connected with the mounting box.

[0021] Adopting the above technical solution: the opening degree of the air suction holes can be adaptively changed by means of air path linkage, which effectively improves the oil fume adsorption efficiency.

[0022] Preferably, a second air pipe is penetratingly connected to the right air box, the second air pipe extends into the oil receiving box, a spray box is detachably and penetratingly connected to the other end of the second air pipe, a sliding plate is arranged in the spray box, and a plurality of spray heads are also arranged on the spray box; a third air pipe is also penetratingly connected to the right air box, and one-way valves are arranged in both the third air pipe and the second air pipe.

[0023] Adopting the above technical solution: the automatic spray cleaning of the oil receiving box is realized by using the linkage of the original equipment, which reduces manual disassembly, cleaning and maintenance.

[0024] In summary, this invention provides a square oven with a self-circulating fume purification function, which has the following advantages: The internal circulation structure, with side-blowing to gather smoke and side-suction, eliminates the need for an exhaust duct above the oven body, preventing obstruction of diners' views and maintaining the overall shop layout; the side airflow directs the rising fumes to the suction port, eliminating the need for a high-power fan, effectively reducing fan power consumption and operating noise; even under low customer traffic conditions, an external exhaust fan is unnecessary, reducing power consumption; the oven integrates a plasma purification module, providing built-in fume purification capabilities, eliminating the need for merchants to pre-install exhaust ducts, significantly reducing shop renovation costs, and meeting environmental emission requirements without the need to purchase additional fume purification equipment. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the appearance of the present invention; Figure 2 This is a schematic diagram of the installation of the plasma purification module of the present invention; Figure 3 This is a cross-sectional schematic diagram of the present invention; Figure 4 This is a schematic diagram of the installation of the mounting frame of the present invention; Figure 5 This is a schematic diagram of the internal structure of the third cavity of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of part of the structure; Figure 7 This is a schematic diagram of the internal structure of the fourth cavity of the present invention; Figure 8 This is a schematic diagram of the internal structure of the mounting box of the present invention; Figure 9 This is a schematic diagram of the structure of one of the air boxes of the present invention; Figure 10 This is a schematic diagram of another air box according to the present invention; Figure 11 This is a schematic diagram of the internal structure of the drive box of the present invention; Figure 12 This is a schematic diagram of the internal structure of the spray box of the present invention.

[0026] In the diagram: 1. Oven body; 2. Air intake vent; 3. Baking tray; 4. Horizontal plate; 5. Fan; 6. Baking tray mounting slot; 7. Baffle plate; 8. Filter screen; 9. Oil collection box; 10. Plasma purification module; 11. Distribution box; 12. Vertical plate; 13. Mounting frame; 14. Heating unit; 15. Positioning frame; 16. Knob; 17. Air intake plate; 18. Air outlet; 19. Drive box; 20. Moving rod; 21. Sliding frame; 22. Sliding block; 23. Push rod; 24. Gas pipe 1; 25. Cover plate; 26. Lifting rod 27. Exhaust vent; 28. Hinge joint one; 29. ​​Air pipe two; 30. Connecting rod; 31. Moving block; 32. Threaded rod; 33. Drive rod; 34. Air pipe three; 35. Moving slot; 36. Baffle plate; 37. Connecting rod; 38. Sliding rod; 39. Mounting box; 40. Piston plate; 41. Spring; 42. Push plate; 43. Spray box; 44. Sliding plate; 45. Spray head; 46. Bevel gear one; 47. Bevel gear two; 48. Rotating rod; 49. Fixed frame; 50. Hinge joint two; 51. Air box. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Example 1: Embodiments of the present invention provide a square oven with a self-circulating and purifying function for oil fumes, such as... Figures 1-12 As shown, the oven includes an oven body 1. One side of the oven body 1 is provided with several air blowing holes 18, and the other side of the oven body 1 is provided with several air suction holes 2. The oven body 1 is also provided with several exhaust holes 27. Inside the oven body 1, there is a fan 5 and a plasma purification module 10. The air outlet of the plasma purification module 10 is provided with a wind distribution component. The wind distribution component is used to deliver the purified air in two directions. One direction is blown out through several air blowing holes 18 and carries the oil fumes into several air suction holes 2. The other direction is discharged outward through several exhaust holes 27.

[0031] The working principle and beneficial effects of the above technical solution are as follows: The fan 5 continuously operates to create a negative pressure environment inside the oven. When the oven is in use, the oil fumes generated by the baking of food float upwards. The clean gas processed by the plasma purification module 10 is divided by the wind distribution component. One path of clean gas is blown out horizontally from several air blowing holes 18 on one side, forming a planar wind-blocking airflow, which pushes the upward-floating oil fumes to several air suction holes 2 on the opposite side. Under the action of negative pressure, the oil fumes are drawn into the oven body 1 through the air suction holes 2, and then the oil fumes are purified by the plasma purification module 10. The other path of purified and qualified air is directly discharged to the outside through several exhaust holes 27.

[0032] By setting air blowing holes 18 and air suction holes 2 on both sides of the oven body 1, the exhaust pipe on the top of the oven is eliminated, which will not obstruct the diners' view or affect the aesthetics of the store decoration. The oil fumes are gathered by the air blowing holes 18 and the air suction holes 2, eliminating the need for a high-power fan 5, effectively reducing the power consumption and noise of the equipment. The plasma purification module 10 is integrated inside the oven body 1, so merchants do not need to pre-bury exhaust pipes in the store, saving store decoration costs and eliminating the need to install external oil fume purification equipment.

[0033] Example 2: Based on the above embodiment 1, as follows Figures 1-4 As shown, a horizontal plate 4 and a vertical plate 12 are fixedly installed on the lower inner wall of the oven body 1. The horizontal plate 4 and the front side wall of the oven body 1 form a first cavity, in which a fan 5 is installed. The horizontal plate 4 and the rear side wall of the oven body 1 form a second cavity, in which a plasma purification module 10 is installed. The vertical plate 12 and the right side wall of the oven body 1 form a third cavity. A through groove is opened on the vertical plate 12, and the air outlet of the plasma purification module 10 faces the through groove.

[0034] Preferably, a filter screen 8 is provided on the left side of the plasma purification module 10, and an oil collection box 9 is installed through the rear end of the plasma purification module 10. The filter screen 8 is detachably connected to the horizontal plate 4 and the oil collection box 9. An oblique wind baffle 7 is provided on the left side of the filter screen 8, and the air outlet of the fan 5 passes through the horizontal plate 4 and faces the wind baffle 7.

[0035] The working principle and beneficial effects of the above technical solution are as follows: After the oil fumes are drawn in through the suction hole 2, they first pass through the fan 5. The air from the fan 5 passes through the horizontal plate 4 and blows towards the inclined baffle plate 7. The oil fumes pass through the filter screen 8 to intercept large oil particles. The filtered oil fumes enter the plasma purification module 10 in the second chamber for purification. The decomposed and separated oil sludge is collected in the oil collection box 9. The purified gas enters the third chamber through the through groove on the vertical plate 12. The wind power distribution component divides the gas into two streams: one stream forms a horizontal air curtain through the blowing hole 18, and the other stream is discharged from the exhaust port 27. The filter screen 8 can pre-filter out large particles of oil mist impurities in the oil fumes, reducing the amount of oil adhering to the surface of the plasma purification module 10. The plasma purification module 10 can decompose and separate the oil stains, which can fall into the oil collection box 9 for unified collection, making cleaning more convenient.

[0036] Example 3: Based on the above embodiments 1-2, as follows Figures 1-4 As shown, the oven body 1 is provided with a baking tray mounting slot 6, a baking tray 3 is provided at the lower end of the baking tray mounting slot 6, a mounting frame 13 is provided at the lower end of the baking tray 3, a heating element 14 is provided inside the mounting frame 13, the mounting frame 13 is installed on the horizontal plate 4 and the filter screen 8, a suction plate 17 is installed at the left end of the baking tray mounting slot 6, a number of suction holes 2 are provided on the suction plate 17, and a vertical plate 12 is fixedly connected to the right end of the baking tray mounting slot 6, a number of blowing holes 18 are provided on the vertical plate 12.

[0037] Preferably, the suction plate 17, the mounting frame 13, and the left side wall of the oven body 1 form a fourth cavity, which is connected to the first cavity.

[0038] The working principle and beneficial effects of the above technical solution are as follows: The heating part 14 inside the mounting frame 13 is powered on and heats up the baking tray 3 above, so that the food placed in the baking tray mounting slot 6 is heated at high temperature and baked, thereby generating a large amount of oil fumes; the blowing hole 18 on the vertical plate 12 sprays out airflow, which accurately pushes the oil fumes floating above the baking tray mounting slot 6 towards the suction hole 2 on the suction plate 17. The oil fumes are drawn into the fourth cavity through the suction hole 2, and then introduced into the fan 5 in the first cavity. Then, they are filtered by the filter screen 8 and purified by the plasma purification module 10. Finally, the wind power distribution component completes the diversion. The suction plate 17, the mounting frame 13 and the side wall of the furnace body are used to form an independent fourth cavity. Combined with the through structure of the first cavity, the oil fume adsorption path is regulated, which greatly improves the oil fume collection efficiency and effectively reduces the overflow of oil fumes. The layout is compact and reasonable, without occupying extra space. At the same time, the stable airflow channel can reduce the workload of the fan 5, making it more practical.

[0039] Example 4: Based on the above embodiment 3, such as Figure 2 , Figures 5-6, Figure 11 As shown, the wind power distribution assembly includes a distribution box 11, which is installed on the through slot. Several exhaust holes 27 are provided on the lower side wall of the fourth cavity. A cover plate 25 is hinged to the distribution box 11. A hinge joint 28 is installed on the cover plate 25. A connecting rod 30 is symmetrically hinged to the hinge joint 28. A fixing frame 49 is also fixedly installed on the vertical plate 12. A threaded rod 32 is rotatably installed inside the fixing frame 49. A moving block 31 is threadedly connected to the threaded rod 32. A hinge joint 50 is installed on the moving block 31. The hinge joint 50 is hinged to the connecting rod 30.

[0040] Preferably, the fixed frame 49 is symmetrically provided with moving grooves 35, and the moving block 31 is fixedly provided with a lifting rod 26. The lifting rod 26 passes through the moving groove 35 and is slidably connected to the moving groove 35. The vertical plate 12 is also fixedly provided with a drive box 19. The threaded rod 32 extends into the drive box 19. The upper end of the threaded rod 32 is fixedly provided with a bevel gear 46. The bevel gear 46 is meshed with a bevel gear 47. The bevel gear 47 is fixedly provided with a rotating rod 48. The rotating rod 48 rotates through the right side wall of the oven body 1. The right end of the rotating rod 48 is fixedly provided with a knob 16.

[0041] The distribution box 11 is designed with an L-shaped structure and has an opening at the bottom, which faces several exhaust holes 27.

[0042] The working principle and beneficial effects of the above technical solution are as follows: The clean airflow purified by the plasma purification module 10 is sent into the distribution box 11 through the through slot of the vertical plate 12; the staff / diners can manually turn the knob 16 on the outside of the oven to drive the rotating rod 48 to rotate. Through the meshing transmission of bevel gear 2 47 and bevel gear 1 46, the threaded rod 32 inside the drive box 19 is rotated; the threaded rod 32 drives the moving block 31 to move up and down, and the lifting rod 26 slides along the moving slot 35 of the fixed frame 49; the moving block 31 drives the cover plate 25 to rotate through the linkage of hinge joint 2 50, connecting rod 30 and hinge joint 1 28, thereby adjusting the opening degree of the cover plate 25 to block the internal channel of the distribution box 11, thereby realizing the proportional adjustment of airflow diversion; The airflow distributed by the distribution box 11 is distributed in two ways: one way is ejected through the blow hole 18 of the vertical plate 12 to form a horizontal circulating airflow; the other way is discharged directly from the exhaust port 27 through the lower opening of the distribution box 11. Staff / diners can flexibly adjust the circulating air volume and the exhaust air volume according to the concentration of oil fumes on site.

[0043] With its external mechanical adjustment mechanism using knob 16, operation is simple and convenient. It can adjust the ratio of circulating airflow to exhaust airflow in real time according to the different amounts of oil fumes produced during baking. Combined with the linkage structure of bevel gears, threaded rods, and connecting rods, the transmission is more stable and the adjustment precision is high. With the sliding limit of lifting rod 26 and moving slot 35, the adjustment is smoother. When the amount of oil fumes is large, the circulating air volume is increased to enhance the circulation effect. When the amount of oil fumes is small, the exhaust air volume is increased to quickly dissipate the residual heat in the oven. It is suitable for various baking conditions, further reducing equipment energy consumption and improving overall purification and smoke exhaust efficiency.

[0044] Example 5: Based on the above embodiment 4, such as Figures 5-6 As shown, an air box 51 is symmetrically fixed on the vertical plate 12. A push plate 42 is slidably installed inside the air box 51. A push rod 23 is fixedly installed at the upper end of the push plate 42. A sliding block 22 is fixedly installed at the upper end of the push rod 23. A sliding frame 21 is also symmetrically installed on the vertical plate 12. The sliding block 22 is slidably installed inside the sliding frame 21. A moving rod 20 is fixedly installed at the upper end of the sliding block 22. A displacement frame 15 is fixedly connected to the upper end of the moving rod 20. The displacement frame 15 is used to change the blowing height of several air holes 18. A drive rod 33 is fixedly installed on the lifting rod 26. The drive rod 33 slides into the air box 51 and is fixedly connected to the push plate 42.

[0045] Among them, several air blowing holes 18 are arranged in three rows along the vertical direction, and the displacement frame 15 is a square frame structure; when the displacement frame 15 moves down to the bottom, it blocks the upper and middle rows, and only the lower row is discharged; when the displacement frame 15 is in the middle position, it blocks the upper and lower rows, and only the middle row is discharged; when the displacement frame 15 slides to the upper position, it blocks the middle and lower rows, and only the uppermost row is discharged. The air outlet height of the air blowing holes 18 can be adjusted by moving the displacement frame 15.

[0046] The working principle and beneficial effects of the above technical solution are as follows: When the staff / diners turn the knob 16 to increase the circulating air volume, the threaded rod 32 drives the moving block 31 and the lifting rod 26 to move upward synchronously. The lifting rod 26 drives the push plate 42 to move upward through the drive rod 33. The push plate 42 drives the sliding block 22 to move upward through the push rod 23. The sliding block 22 drives the moving rod 20 to move upward. The moving rod 20 causes the displacement frame 15 to rise. At this time, the displacement frame 15 blocks the middle and lower rows of air blowing holes 18, and only the uppermost row of air blowing holes 18 can conduct air out. The air outlet height is raised, and with the increased circulating air volume, a high-level horizontal airflow is formed to intercept and collect the oil fumes that rise to a higher height. The oil fumes are pushed by the airflow and gathered to the suction hole 2 and drawn into the furnace for purification.

[0047] The air volume and exhaust height are controlled in tandem by rotating the cover plate 25 and adjusting the displacement frame 15. This eliminates the need for additional drive components and simplifies the internal structure of the furnace. The three rows of layered air holes 18, combined with the position-type shielding structure of the displacement frame 15, allow for switching between upper, middle, and lower exhaust as needed. When the amount of oil fumes rising is large, the air volume is increased and the exhaust is switched to the upper exhaust. The high-level horizontal airflow can trap the rising oil fumes, effectively preventing oil fumes from overflowing and enhancing practicality.

[0048] Example 6: Based on the above embodiment 5, such as Figure 2 , Figures 5-7 , Figures 9-10 , Figure 12 As shown, an air pipe 24 is connected through the air box 51 on the left side. The air pipe 24 extends through the first cavity and into the fourth cavity. A baffle plate 36 is symmetrically slidably arranged on the suction plate 17. A connecting rod 37 is fixedly arranged at one end of the baffle plate 36. A sliding rod 38 is fixedly arranged on the connecting rod 37. A mounting box 39 is fixedly arranged on the suction plate 17. The sliding rod 38 slides into the mounting box 39. Piston plates 40 are symmetrically slidably arranged in the mounting box 39. The sliding rod 38 is fixedly connected to the piston plates 40. A spring 41 is fixedly arranged between the two piston plates 40. The air pipe 24 is connected through the mounting box 39.

[0049] Preferably, an air pipe 29 is connected through the air box 51 on the right side, and the air pipe 29 extends into the oil receiving box 9. The other end of the air pipe 29 is detachably connected through to the injection box 43. A sliding plate 44 is provided inside the injection box 43, and several injection heads 45 are also provided on the injection box 43. An air pipe 34 is also connected through the air box 51 on the right side, and a one-way valve is provided in both the air pipe 34 and the air pipe 29.

[0050] Among them, several air intake holes 2 are arranged in three rows along the vertical direction; under normal circumstances, the wind baffles 36 on both sides block the upper and lower rows of air intake holes 2, and only the middle row is open for air intake; as the circulating air volume increases, the air box 51 supplies air to drive the two wind baffles 36 to move in opposite directions, and the three rows of air intake holes 2 are fully opened, increasing the air intake area to match the air intake volume and enhancing the oil fume adsorption capacity.

[0051] The left end of the spray box 43 is equipped with a one-way liquid inlet.

[0052] The working principle and beneficial effects of the above technical solution are as follows: When the push plate 42 on the left moves upward, the gas inside the left air box 51 is sent into the mounting box 39 through the air pipe 24 under the action of the push plate 42. The air pressure pushes the piston plate 40 to stretch the middle spring 41. The piston plate 40 drives the two side baffle plates 36 to slide in the opposite direction through the sliding rod 38 and the connecting rod 37. All three rows of air intake holes 2 are opened, increasing the air intake area and improving the amount of oil fume sucked in. When the push plate 42 on the left returns to its original position, the air pressure inside the mounting box 39 decreases. The spring 41 drives the piston plate 40 to return to its original position. The baffle plates 36 seal the upper and lower rows of air intake holes 2, and only the middle row maintains air intake. Simultaneously, when the right-side push plate 42 moves upward, the gas in the right-side air box 51 is sent into the spray box 43 through the second air pipe 29, pushing the internal sliding plate 44 to move and squeeze the pre-placed oil stain cleaner in the box. The cleaner is sprayed out from several spray nozzles 45, completing the spray cleaning of the inner wall oil stains in the oil collection box 9. When the right-side push plate 42 is reset, the third air pipe 34 takes in air, and the gas enters the right-side air box 51. That is, the sliding plate 44 will always move to the left and will not absorb the oil stains in the oil collection box. When the sliding plate 44 moves to the leftmost position, the entire spray box 43 is removed from the end of the second air pipe 29. The oil stain cleaner is refilled from the one-way liquid inlet on the left side of the spray box 43. When the liquid is added, the sliding plate 44 is pushed to the rightmost position by the newly added liquid. Then the spray box 43 and the second air pipe 29 can be detachably connected.

[0053] With the simultaneous action of increasing the air volume of the cover plate 25 and raising the air outlet height of the displacement frame 15, the push plate 42 simultaneously pushes the gas in the air box 51, automatically driving the wind baffle 36 to open all the air intake holes 2, realizing the synchronous linkage adjustment of the blowing air volume, air outlet height, and air intake air volume, and the real-time adaptation of the inlet and outlet air volume, which significantly improves the effect of self-circulation to remove oil fumes; in addition, the right air box 51 synchronously supplies air to drive the spray box 43 to spray and clean the oil box 9, without the need for an additional power source, and the oil stains are self-cleaned by relying on the original adjustment action; the structure has good linkage and the use effect is better.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A square oven with a self-circulating and purifying function for oil fumes, characterized in that, The oven body (1) includes a number of air blowing holes (18) on one side and a number of air suction holes (2) on the other side. The oven body (1) also has a number of exhaust holes (27). The oven body (1) is equipped with a fan (5) and a plasma purification module (10). The air outlet of the plasma purification module (10) is equipped with a wind distribution component. The wind distribution component is used to deliver the purified air in two directions. One direction blows out through a number of air blowing holes (18) and carries the oil fumes into a number of air suction holes (2). The other direction is discharged outward through a number of exhaust holes (27).

2. A square oven with self-circulating fume purification function according to claim 1, characterized in that, A horizontal plate (4) and a vertical plate (12) are fixedly installed on the lower inner wall of the oven body (1). The horizontal plate (4) and the front side wall of the oven body (1) form a first cavity, in which a fan (5) is installed. The horizontal plate (4) and the rear side wall of the oven body (1) form a second cavity, in which a plasma purification module (10) is installed. The vertical plate (12) and the right side wall of the oven body (1) form a third cavity. A through groove is opened on the vertical plate (12), and the air outlet of the plasma purification module (10) faces the through groove.

3. A square oven with self-circulating and purifying oil fume function according to claim 2, characterized in that, A filter screen (8) is provided on the left side of the plasma purification module (10). An oil collection box (9) is installed through the rear end of the plasma purification module (10). The filter screen (8) is detachably connected to the horizontal plate (4) and the oil collection box (9). An oblique wind baffle (7) is provided on the left side of the filter screen (8). The air outlet of the fan (5) passes through the horizontal plate (4) and faces the wind baffle (7).

4. A square oven with self-circulating and purifying oil fume function according to claim 3, characterized in that, The oven body (1) is provided with a baking tray mounting slot (6), a baking tray (3) is provided at the lower end of the baking tray mounting slot (6), a mounting frame (13) is provided at the lower end of the baking tray (3), a heating part (14) is provided inside the mounting frame (13), the mounting frame (13) is installed on the horizontal plate (4) and the filter screen (8), a suction plate (17) is installed at the left end of the baking tray mounting slot (6), a number of suction holes (2) are provided on the suction plate (17), and a vertical plate (12) is fixedly connected to the right end of the baking tray mounting slot (6), a number of blowing holes (18) are provided on the vertical plate (12).

5. A square oven with self-circulating fume purification function according to claim 4, characterized in that, The suction plate (17), the mounting frame (13) and the left side wall of the oven body (1) form a fourth cavity, which is connected to the first cavity.

6. A square oven with self-circulating and purifying oil fume function according to claim 5, characterized in that, The wind power distribution assembly includes a distribution box (11), which is installed on the through slot. Several exhaust holes (27) are provided on the lower side wall of the fourth cavity. A cover plate (25) is hinged on the distribution box (11). A hinge joint (28) is installed on the cover plate (25). A connecting rod (30) is symmetrically hinged on the hinge joint (28). A fixed frame (49) is also fixedly installed on the vertical plate (12). A threaded rod (32) is rotatably installed inside the fixed frame (49). A moving block (31) is threadedly connected to the threaded rod (32). A hinge joint (50) is installed on the moving block (31). The hinge joint (50) is hinged to the connecting rod (30).

7. A square oven with self-circulating and purifying oil fume function according to claim 6, characterized in that, A movable slot (35) is symmetrically provided on the fixed frame (49). A lifting rod (26) is fixedly provided on the movable block (31). The lifting rod (26) passes through the movable slot (35) and is slidably connected to the movable slot (35). A drive box (19) is also fixedly provided on the vertical plate (12). The threaded rod (32) rotates and extends into the drive box (19). A bevel gear one (46) is fixedly provided at the upper end of the threaded rod (32). A bevel gear two (47) is meshed on the bevel gear one (46). A rotating rod (48) is fixedly provided on the bevel gear two (47). The rotating rod (48) rotates and passes through the right side wall of the oven body (1). A knob (16) is fixedly provided at the right end of the rotating rod (48).

8. A square oven with self-circulating and purifying oil fume function according to claim 7, characterized in that, A gas box (51) is symmetrically fixed on the vertical plate (12). A push plate (42) is slidably installed inside the gas box (51). A push rod (23) is fixedly installed at the upper end of the push plate (42). A sliding block (22) is fixedly installed at the upper end of the push rod (23). A sliding frame (21) is also symmetrically installed on the vertical plate (12). The sliding block (22) is slidably installed inside the sliding frame (21). A moving rod (20) is fixedly installed at the upper end of the sliding block (22). A displacement frame (15) is fixedly connected at the upper end of the moving rod (20). The displacement frame (15) is used to change the blowing height of several air holes (18). A drive rod (33) is fixedly installed on the lifting rod (26). The drive rod (33) slides into the air box (51). The drive rod (33) is fixedly connected to the push plate (42).

9. A square oven with self-circulating fume purification function according to claim 8, characterized in that, An air pipe (24) is connected through the air box (51) on the left side. The air pipe (24) extends through the first cavity to the fourth cavity. A baffle plate (36) is symmetrically slidably arranged on the suction plate (17). A connecting rod (37) is fixedly arranged at one end of the baffle plate (36). A sliding rod (38) is fixedly arranged on the connecting rod (37). An installation box (39) is fixedly arranged on the suction plate (17). The sliding rod (38) slides into the installation box (39). A piston plate (40) is symmetrically slidably arranged in the installation box (39). The sliding rod (38) is fixedly connected to the piston plate (40). A spring (41) is fixedly arranged between the two piston plates (40). The air pipe (24) is connected through the installation box (39).

10. A square oven with self-circulating oil fume purification function according to claim 9, characterized in that, Air pipe 2 (29) is connected through the air box (51) on the right side. Air pipe 2 (29) extends into the oil receiving box (9). The other end of air pipe 2 (29) is detachably connected through to the injection box (43). A sliding plate (44) is provided inside the injection box (43). Several injection heads (45) are also provided on the injection box (43). Air pipe 3 (34) is also connected through the air box (51) on the right side. One-way valves are provided in both air pipe 3 (34) and air pipe 2 (29).

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