Oil fume purification structure and barbecue oven

Abstract

The utility model relates to barbecue stove technical field discloses an oil fume purification structure and barbecue stove, including frame body, high -voltage electrostatic ware and blower device, is provided with heating mechanism and air duct on the frame body, one end of air duct is provided with suction port, and suction port is connected with heating mechanism, and the other end of air duct is provided with the exhaust port that communicates with outside, high -voltage electrostatic ware and blower device are split and set up and all place in air duct, and high -voltage electrostatic ware is detachably connected with frame body, when using, heating mechanism heats the oil fume that external food produces, and blower device works, and the air with oil fume is inhaled into air duct from suction port place. The utility model discloses oil fume purification structure, simple structure, low in production cost, high -voltage electrostatic ware and blower device split and set up, it is convenient to reduce the volume of high -voltage electrostatic ware, so that high -voltage electrostatic ware carries out dismouting maintenance, cleaning, and it is convenient to increase the volume after blower device split, to provide larger wind force, promote the suction degree of strength to oil fume, and the use experience is good.

Description

Technical Field

[0001] This utility model relates to the field of barbecue oven technology, and more specifically, to an oil fume purification structure and a barbecue oven. Background Technology

[0002] As people's living standards improve, their diets become more diverse, with barbecue becoming increasingly popular. However, barbecue is a rather tedious process. During the barbecue, the chef needs to manually flip the skewers while constantly monitoring their doneness to prevent uneven heating or burning on one side. Barbecue chefs have limited energy. To improve the quality of barbecue, some automatic barbecue grills have emerged on the market to assist in the barbecue process.

[0003] Some existing barbecue grills are equipped with fume extraction and purification devices, including high-voltage electrostatic precipitators. The fume purification principle of high-voltage electrostatic precipitators is as follows: the electrostatic precipitator generates corona discharge through high-voltage electrodes (such as tungsten wires), ionizing air molecules into positive ions and electrons. When oil fume particles pass through the ionization zone, they capture the charge (usually negatively charged), and the charged oil fume is adsorbed onto the dust collection plate (positive electrode) with the opposite charge, thus separating it from the smoke. After a period of use, the high-voltage electrostatic precipitator needs to be disassembled and cleaned. Existing high-voltage electrostatic precipitators include a main body with a fan inside, resulting in a large main body that is not easy to disassemble, clean, or repair. In addition, the fan is used to provide airflow for fume extraction. The existing structure has the fan built into the main body, which limits the size of the fan and makes it inconvenient to use a large fan to provide strong airflow, resulting in weak fume extraction and poor purification effect. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides an oil fume purification structure, comprising a frame, a high-voltage electrostatic precipitator, and a blower. The frame is equipped with a heating mechanism and an air duct. One end of the air duct has an intake port connected to the heating mechanism, and the other end has an exhaust port connected to the outside. The high-voltage electrostatic precipitator and the blower are separate components, both housed within the air duct, and the high-voltage electrostatic precipitator is detachably connected to the frame. In use, the heating mechanism heats external food to generate oil fumes. The blower, when powered on, draws the oil-fumes-laden air into the air duct through the intake port. After being adsorbed and purified by the high-voltage electrostatic precipitator, the air is discharged to the outside through the exhaust port. This oil fume purification structure is simple in structure and has low production costs. The separate design of the high-voltage electrostatic precipitator and the blower facilitates a reduction in the size of the high-voltage electrostatic precipitator, allowing for easy disassembly, maintenance, and cleaning. The separate design of the blower allows for a larger volume to provide greater airflow, enhancing the suction power of the oil fumes and providing a superior user experience.

[0005] Optionally, the blower is provided with an air inlet and an air outlet, the high-voltage electrostatic device is provided with an air inlet surface and an air outlet surface, the air inlet surface is connected to the suction inlet, the air inlet is located on one side of the air outlet surface, and the air outlet is connected to the discharge outlet.

[0006] Optionally, the frame is provided with a slide rail, and the bottom of the high-voltage electrostatic device is provided with a sliding frame that slides against the slide rail; when disassembling the high-voltage electrostatic device, an external force drives the high-voltage electrostatic device to slide along the extension direction of the slide rail, so that the sliding frame slides away from the slide rail.

[0007] Optionally, the air duct includes a first air duct, a second air duct, and a purification chamber. The high-voltage electrostatic device and the blower are both placed inside the purification chamber. One end of the first air duct is connected to the inlet, and the other end of the first air duct is connected to the purification chamber. One end of the second air duct is connected to the purification chamber, and the other end of the second air duct is connected to the outside.

[0008] Optionally, one side of the purification chamber is provided with an opening that communicates with the outside, and the opening is provided with a cabinet door that can be opened / closed.

[0009] Optionally, one end of the cabinet door is hinged to the frame, and an installation cavity is provided on the side of the cabinet door away from the purification chamber. The installation cavity is provided with a leakage current protection switch and a high-voltage power supply for supplying power to the high-voltage electrostatic generator. The leakage current protection switch is electrically connected to the high-voltage electrostatic generator, and a cover plate for opening / closing the installation cavity is hinged to the cabinet door.

[0010] Optionally, the cabinet door is provided with a switch for controlling the power on / off of the high-voltage electrostatic generator and the blower, and the cabinet door is provided with an indicator light for displaying the power on / off status of the high-voltage electrostatic generator and the blower.

[0011] Optionally, the blowing device is a vortex fan, and the bottom of the blowing device is fixed to the frame.

[0012] Optionally, the heating mechanism includes an electric heating wire, a chain, and a motor for driving the chain. The electric heating wire includes a first electric heating wire disposed on the upper side of the chain and a second electric heating wire disposed on the lower side of the chain. The first electric heating wire is located directly above or nearly directly above the second electric heating wire. The suction port includes a first suction port disposed above the first electric heating wire and a second suction port disposed above the second electric heating wire. The upper side of the chain is provided with a feeding area and a discharging area. In use, the food to be baked is placed in the feeding area, and the chain is driven by the motor to move so that the chain moves the food in the feeding area to between the first electric heating wire and the second electric heating wire for heating and baking. The motor continues to drive the chain to move so that the chain carries the baked food to the discharging area for manual removal.

[0013] Compared to existing technologies, the fume purification structure in this invention is simple in structure and has low production costs. The high-voltage electrostatic precipitator and the blower are set up separately, which facilitates the reduction of the size of the high-voltage electrostatic precipitator, making it easier to disassemble, repair, and clean. The separate blower allows for a larger volume to provide greater airflow and improve the suction power of the fume, resulting in a better user experience. The air containing fumes is first purified by the high-voltage electrostatic precipitator before entering the blower, ensuring that the air contacted by the blower is relatively clean. This avoids the air containing fumes coming into contact with the blower first, which could cause pollution or corrosion and affect the normal operation of the blower. Both the high-voltage electrostatic precipitator and the blower are placed in the purification chamber, which serves as a centralized installation space for the high-voltage electrostatic precipitator and the blower, improving the convenience of installation and maintenance. At the same time, the purification processes such as charging, adsorption, and dust removal of the air are completed in the independent purification chamber, preventing pollutants from spreading to other air ducts.

[0014] In addition, this utility model also provides a barbecue grill, which includes the above-mentioned oil fume purification structure. This barbecue grill also has the beneficial effects of the above-mentioned oil fume purification structure, which will not be described in detail here. Attached Figure Description

[0015] Figure 1 This is a perspective view of the oil fume purification structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 A cross-sectional view of the oil fume purification structure of this utility model. Figure 1 ;

[0018] Figure 4 for Figure 3 Enlarged view of section B;

[0019] Figure 5 A cross-sectional view of the oil fume purification structure of this utility model. Figure 2 ;

[0020] Figure 6 for Figure 5 Enlarged view of section C;

[0021] Figure 7 This is a perspective view of the oil fume purification structure of this utility model in cross-section.

[0022] Figure 8 for Figure 7 Enlarged view of section D in the middle;

[0023] Figure 9 This is a schematic diagram of the high-voltage electrostatic precipitator part of the oil fume purification structure of this utility model;

[0024] Figure 10 for Figure 9 Enlarged view of section E in the middle;

[0025] Figure 11 This is a schematic diagram of the high-voltage electrostatic precipitator in the oil fume purification structure of this utility model during disassembly.

[0026] Figure 12 This is a schematic diagram of the opening portion of the oil fume purification structure of this utility model;

[0027] Figure 13 This is a schematic diagram of the installation cavity of the oil fume purification structure of this utility model;

[0028] The component names corresponding to the various labels in the diagram are as follows: 1 is the frame, 101 is the slide rail, 102 is the speed control switch, 103 is the adjustment knob, 2 is the high-voltage electrostatic device, 21 is the air inlet, 22 is the air outlet, 201 is the sliding frame, 3 is the blowing device, 31 is the air inlet, 32 is the air outlet, 4 is the air duct, 41 is the first air duct, 411 is the connecting groove, 42 is the second air duct, 43 is the purification chamber, 431 is the opening, and 401 is the suction port. 4011 is the first suction inlet, 4012 is the second suction inlet, 402 is the discharge outlet, 5 is the cabinet door, 501 is the mounting cavity, 502 is the leakage protection switch, 503 is the high-voltage power supply, 504 is the cover plate, 505 is the on / off switch, 506 is the indicator light, 61 is the chain, 611 is the feeding area, 612 is the unloading area, 62 is the motor, 63 is the first heating wire, 64 is the second heating wire, 7 is the food, and 71 is the skewer. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0032] See Figures 1-13 This utility model provides an oil fume purification structure, including a frame 1, a high-voltage electrostatic precipitator 2, and a blower 3. The frame 1 is equipped with a heating mechanism and an air duct 4. One end of the air duct 4 has an intake port 401 connected to the heating mechanism, and the other end has an exhaust port 402 connected to the outside. The high-voltage electrostatic precipitator 2 and the blower 3 are separately installed and both are located within the air duct 4. The high-voltage electrostatic precipitator 2 is detachably connected to the frame 1. In use, the heating mechanism heats external food to generate oil fumes. The blower 3 is powered on and draws the oil-fumes-laden air into the air duct 4 through the intake port 401. After being adsorbed and purified by the high-voltage electrostatic precipitator 2, the air is discharged to the outside through the exhaust port 402. This utility model oil fume purification structure is simple in structure and has low production cost. The separate installation of the high-voltage electrostatic precipitator and the blower 3 facilitates the reduction of the volume of the high-voltage electrostatic precipitator, making it easier to disassemble, repair, and clean. The separate installation of the blower 3 allows for a larger volume to provide greater airflow and improve the suction power of the oil fumes, resulting in a better user experience.

[0033] Specifically, the heating mechanism can be heated by electric heating or traditional charcoal heating. Both of these heating methods will produce oil fumes, which can be purified by the oil fume purification structure of this utility model. The blowing device 3 can be a fan, blower, or other device that can generate wind.

[0034] See Figures 1-5The blower 3 is equipped with an air inlet 31 and an air outlet 32. The high-voltage electrostatic precipitator 2 is equipped with an air inlet surface 21 and an air outlet surface 22. The air inlet surface 21 is connected to the intake 401, the air inlet 31 is placed on one side of the air outlet surface 22, and the air outlet 32 ​​is connected to the exhaust 402. In use, the blower 3 and the high-voltage electrostatic precipitator 2 are powered on. External air containing oil fumes enters the air duct 4 from the intake 401 and flows along the air duct 4 to the air inlet surface 21, where it enters the high-voltage electrostatic precipitator 2 for adsorption and purification. After being discharged from the air outlet surface 22, it enters the air inlet 31 and is discharged from the air outlet 32. Finally, it is discharged to the outside from the exhaust 402 along the air duct 4. In the above process, the air containing oil fumes is first purified by the high-voltage electrostatic precipitator 2 before entering the blower 3, so that the air that the blower 3 comes into contact with is relatively clean. This avoids the air containing oil fumes coming into contact with the blower 3 first, which would cause pollution, corrosion, or other effects on the blower 3 and prevent affect the normal operation of the blower 3.

[0035] Specifically, cooking fumes contain a large amount of grease particles and tar. If these directly enter the blower, they will gradually adhere to internal components (such as fan blades, bearings, and circuitry), forming stubborn grease buildup. This grease buildup can lead to: impeller imbalance (increasing vibration and noise, reducing airflow efficiency, and consequently lower fume extraction efficiency); bearing wear (grease and dust mix and harden, accelerating mechanical wear); and motor overheating (grease covers heat dissipation components, affecting motor cooling and potentially causing malfunctions). If the blower is contaminated with grease, it requires frequent disassembly and cleaning (e.g., using solvents or ultrasonic cleaning), resulting in complex and costly maintenance. Therefore, using a high-voltage electrostatic precipitator to pre-adsorb cooking fumes can significantly reduce the concentration of grease and corrosive substances encountered by the blower, thus lowering the failure rate. (See also...) Figure 1 , Figure 3 , Figure 9 , Figure 10 and Figure 11 The frame 1 is equipped with a slide rail 101, and the bottom of the high-voltage electrostatic device 2 is equipped with a sliding frame 201 that slides against the slide rail 101. When disassembling the high-voltage electrostatic device 2, external force drives the high-voltage electrostatic device 2 to slide along the extension direction of the slide rail 101, so that the sliding frame 201 slides away from the slide rail 101. The slide rail 101 facilitates the disassembly of the high-voltage electrostatic device 2, and thus facilitates the cleaning and maintenance of the high-voltage electrostatic device 2. After cleaning and maintenance, the high-voltage electrostatic device 2 is placed on the upper side of the slide rail 101 and slid to the original installation position. The operation is convenient. The longitudinal section of the slide rail 101 is L-shaped and there are two symmetrically arranged so that the high-voltage electrostatic device 2 can only slide along the extension direction of the slide rail 101. In this embodiment, both the slide rail 101 and the sliding frame 201 are made of wear-resistant metal material.

[0036] See Figures 4-8The air duct 4 includes a first air duct 41, a second air duct 42, and a purification chamber 43. The high-voltage electrostatic generator 2 and the blower 3 are both placed in the purification chamber 43. One end of the first air duct 41 is connected to the inlet 401, and the other end of the first air duct 41 is connected to the purification chamber 43 through the connecting groove 411. One end of the second air duct 42 is connected to the purification chamber 43, and the other end of the second air duct 42 is connected to the outside. The purification chamber serves as a centralized installation space for the high-voltage electrostatic generator 2 and the blower 3, improving the convenience of installation and maintenance. At the same time, it allows the purification processes such as air charging, adsorption, and dust removal to be completed in an independent chamber (purification chamber), preventing pollutants from spreading to other air ducts.

[0037] See Figure 1 , Figure 7 , Figure 12 and Figure 13 The purification chamber 43 has an opening 431 on one side that connects to the outside. A cabinet door 5, which can be opened and closed, is located at the opening 431. Opening the cabinet door 5 allows for the installation and removal of the high-voltage electrostatic generator 2, while closing the cabinet door 5 prevents oily air from leaking to the outside through the opening 431 during use. A lock can be installed on the cabinet door 5 to prevent accidental opening when closed. One end of the cabinet door 5 is hinged to the frame 1. A mounting cavity 501 is located on the side of the cabinet door 5 away from the purification chamber 43. The mounting cavity 501 contains a leakage current protection switch 502 and a high-voltage power supply 503 for supplying power to the high-voltage electrostatic generator 2. The leakage current protection switch 502 is electrically connected to the high-voltage electrostatic generator 2. A door is hinged to the cabinet door 5. The cover plate 504 is used to open / close the mounting cavity 501. Opening the cover plate 504 allows for wiring, maintenance, and other work related to the leakage current protection switch 502 and the high-voltage power supply 503. Closing the cover plate 504 provides a certain degree of protection for the leakage current protection switch 502 and the high-voltage power supply 503. The leakage current protection switch 502 cuts off the power when the high-voltage electrostatic device 2 leaks, preventing electric shock and ensuring high safety. By placing the leakage current protection switch 502 and the high-voltage power supply 503 inside the mounting cavity 501 of the cabinet door 5, the installation space of the cabinet door itself is fully utilized, eliminating the need for additional installation space for the leakage current protection switch 502 and the high-voltage electrostatic device 2 on the frame 1. This results in a compact structure and reasonable design.

[0038] See Figure 1The cabinet door 5 is equipped with a switch 505 for controlling the power supply / de-energization of the high-voltage electrostatic generator 2 and the blower 3. In this embodiment, the switch 505 is a power button. Pressing the switch 505 once powers on the high-voltage electrostatic generator 2 and the blower 3; pressing the switch 505 again de-energizes the high-voltage electrostatic generator 2 and the blower 3, making operation convenient. The cabinet door 5 is also equipped with indicator lights 506 to display the power supply / de-energization status of the high-voltage electrostatic generator 2 and the blower 3, so that the user can know the current working status of the high-voltage electrostatic generator 2 and the blower 3. There are two indicator lights 506, which can be set to different colors, such as a red indicator light and a green indicator light. The indication function is as follows: when the high-voltage electrostatic generator 2 and the blower 3 are powered on, the green indicator light is on and the red indicator light is off; when the high-voltage electrostatic generator 2 and the blower 3 are de-energized, the red indicator light is on and the green indicator light is off.

[0039] See Figure 1 , Figure 3 and Figure 9 The blowing device 3 is a vortex fan. Compared with ordinary centrifugal fans, the vortex fan can generate higher air force, so as to provide greater suction force and improve the suction effect of oil fumes. The bottom of the blowing device 3 is fixed to the frame 1 by bolts, and the blowing device 3 is easy to assemble.

[0040] See Figures 1-4 The heating mechanism includes an electric heating wire, a chain 61, and a motor 62 for driving the chain 61. The upper side of the chain 61 is driven horizontally or nearly horizontally. The electric heating wire includes a first electric heating wire 63 disposed on the upper side of the chain 61 and a second electric heating wire 64 disposed on the lower side of the chain 61. The first electric heating wire 63 is located directly above or nearly directly above the second electric heating wire 64. The suction port 401 includes a first suction port 4011 disposed above the first electric heating wire 63 and a second suction port 4012 disposed above the second electric heating wire 64. The first suction port 4011 and the second suction port 4012 at different heights facilitate the suction of oily and fume-laden air at different heights, reducing leakage. The 4011 has two inlets, one with a side opening and the other with a downward opening, allowing for the extraction of oily and fumes from different directions, thus improving the extraction effect. The chain 61 has a loading area 611 and a unloading area 612 on its upper side. In use, the food 7 to be grilled is manually placed in the loading area 611. The chain 61 is driven by the motor 62 to move the food 7 in the loading area 611 to the space between the first heating wire 63 and the second heating wire 64 for heating and grilling. The motor 62 continues to drive the chain 61 to move the grilled food 7 to the unloading area 612 for manual removal. There is no need to manually flip the skewers during grilling, making it convenient to use and improving grilling efficiency.

[0041] Specifically, the food 7 is a skewer with skewers 71. Two chains 61 are symmetrically arranged and operate synchronously. One end of the skewer 71 is placed on one chain 61, and the other end is placed on the other chain 61. The motor 62 can be a speed-regulating motor, and its speed can be adjusted by the speed control switch 102 on the frame 1 to adjust the corresponding transmission speed according to different skewers. The speed control switch 102 can be a rotary switch. Specifically, if the skewers are ingredients that are not easy to cook through, the speed can be slowed down appropriately. The motor 62 is used to increase the heating and grilling time of the first heating wire 63 and the second heating wire 64 on the skewers; conversely, if the skewers are easy to grill, the motor 62 is adjusted to shorten the heating and grilling time of the first heating wire 63 and the second heating wire 64 on the skewers. In addition, an adjustment knob 103 can be provided on the frame 1 to adjust the heating power of the first heating wire 63 and the second heating wire 64 to adjust the heating temperature. The adjustment knob 103 can be set as a slider or a knob. In this embodiment, it is set as a slider.

[0042] The oil fume purification structure of this utility model is simple in structure and low in production cost. The high-voltage electrostatic precipitator and the blower are set separately, which makes it easier to reduce the size of the high-voltage electrostatic precipitator, so as to facilitate disassembly, maintenance and cleaning. The separate blower can be made larger to provide greater air force and improve the suction power of oil fumes, resulting in a better user experience. The air containing oil fumes is first purified by the high-voltage electrostatic precipitator before entering the blower, so that the air in contact with the blower is relatively clean. This avoids the air containing oil fumes coming into contact with the blower first, which may cause pollution or corrosion to the blower and affect its normal operation. The high-voltage electrostatic precipitator and the blower are both placed in the purification chamber. The purification chamber serves as a centralized installation space for the high-voltage electrostatic precipitator and the blower, which improves the convenience of installation and maintenance. At the same time, the purification process of air charging, adsorption and dust removal is completed in an independent chamber (purification chamber), which prevents pollutants from spreading to other air ducts.

[0043] In addition, this utility model also provides a barbecue grill, which includes the above-mentioned oil fume purification structure. This barbecue grill also has the beneficial effects of the above-mentioned oil fume purification structure, which will not be described in detail here.

[0044] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0045] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0047] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0048] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An oil fume purification structure, characterized in that, The device includes a frame (1), a high-voltage electrostatic generator (2), and a blower (3). The frame (1) is equipped with a heating mechanism and an air duct (4). One end of the air duct (4) is equipped with an inlet (401) which is connected to the heating mechanism. The other end of the air duct (4) is equipped with an outlet (402) that is connected to the outside. The high-voltage electrostatic generator (2) and the blower (3) are separately installed and both are placed inside the air duct (4). The high-voltage electrostatic generator (2) is detachably connected to the frame (1). When in use, the heating mechanism heats the external food (7) to generate oil fumes. The blower (3) is powered on and draws the air with oil fumes into the air duct (4) from the inlet (401). After being adsorbed and purified by the high-voltage electrostatic generator (2), the air is discharged to the outside through the outlet (402).

2. The oil fume purification structure according to claim 1, characterized in that, The blower (3) is provided with an air inlet (31) and an air outlet (32). The high voltage electrostatic device (2) is provided with an air inlet surface (21) and an air outlet surface (22). The air inlet surface (21) is connected to the suction port (401). The air inlet (31) is located on one side of the air outlet surface (22). The air outlet (32) is connected to the discharge port (402).

3. The oil fume purification structure according to claim 1, characterized in that, The frame (1) is provided with a slide rail (101), and the bottom of the high voltage electrostatic device (2) is provided with a sliding frame (201) that slides against the slide rail (101). When the high voltage electrostatic device (2) is disassembled, an external force drives the high voltage electrostatic device (2) to slide along the extension direction of the slide rail (101) so that the sliding frame (201) slides away from the slide rail (101).

4. The oil fume purification structure according to claim 1, characterized in that, The air duct (4) includes a first air duct (41), a second air duct (42), and a purification chamber (43). The high-voltage electrostatic device (2) and the blower (3) are both placed in the purification chamber (43). One end of the first air duct (41) is connected to the inlet (401), and the other end of the first air duct (41) is connected to the purification chamber (43). One end of the second air duct (42) is connected to the purification chamber (43), and the other end of the second air duct (42) is connected to the outside.

5. The oil fume purification structure according to claim 4, characterized in that, The purification chamber (43) has an opening (431) on one side that communicates with the outside world, and a cabinet door (5) that can be opened / closed is provided at the opening (431).

6. The oil fume purification structure according to claim 5, characterized in that, One end of the cabinet door (5) is hinged to the frame (1). The cabinet door (5) has an installation cavity (501) on the side away from the purification chamber (43). The installation cavity (501) is provided with a leakage protection switch (502) and a high-voltage power supply (503) for supplying power to the high-voltage electrostatic device (2). The leakage protection switch (502) is electrically connected to the high-voltage electrostatic device (2). The cabinet door (5) is hinged with a cover plate (504) for opening / closing the installation cavity (501).

7. The oil fume purification structure according to claim 5, characterized in that, The cabinet door (5) is provided with a switch (505) for controlling the power on / off of the high voltage electrostatic generator (2) and the blower (3), and the cabinet door (5) is provided with an indicator light (506) for displaying the power on / off status of the high voltage electrostatic generator (2) and the blower (3).

8. The oil fume purification structure according to claim 1, characterized in that, The blowing device (3) is a vortex fan, and the bottom of the blowing device (3) is fixed to the frame (1).

9. The oil fume purification structure according to any one of claims 1-8, characterized in that, The heating mechanism includes an electric heating wire, a chain (61), and a motor (62) for driving the chain (61) to rotate. The electric heating wire includes a first electric heating wire (63) disposed on the upper side of the chain (61) and a second electric heating wire (64) disposed on the lower side of the chain (61). The first electric heating wire (63) is located directly above or nearly directly above the second electric heating wire (64). The suction port (401) includes a first suction port (4011) disposed above the first electric heating wire (63) and a second suction port (4012) disposed above the second electric heating wire (64). The chain (61) is provided with a feeding area (611) and a discharging area (612) on its upper side. In use, the food (7) to be baked is placed in the feeding area (611), and the chain (61) is driven by the motor (62) to rotate so that the chain (61) moves the food (7) in the feeding area (611) to the space between the first electric heating wire (63) and the second electric heating wire (64) for heating and baking. The motor (62) continues to drive the chain (61) to rotate so that the chain (61) moves the baked food (7) to the discharging area (612) for manual removal.

10. A barbecue grill, characterized in that, Includes the fume purification structure as described in any one of claims 1-9.

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