A tabletop integrated chafing dish device for purifying oil fume and a purification method thereof

Abstract

The present application relates to a kind of table type charring and boiling oil fume purification integrated hot pot integrated device and its purification method, including hot pot integrated device, oil fume purification channel is equipped in hot pot integrated device, oil fume purification channel top extends out of hot pot integrated device, the air inlet of oil fume purification channel is arranged in the side of oil fume purification channel extended out of hot pot integrated device, and the end cover is covered in the top of oil fume purification channel;The air outlet of oil fume purification channel is arranged in the periphery of hot pot integrated device, and the air outlet of oil fume purification channel faces the upper side of the air inlet of oil fume purification channel;Oil fume purification channel in hot pot integrated device is equipped with outer rotor motor, and outer rotor motor is fixed in the bottom in hot pot integrated device, and centrifugal fan wheel is fixed on the outer rotor of outer rotor motor;Filtering and purifying device is also provided in oil fume purification channel.By the present application, it is convenient that oil fume of hot pot integrated device is directly discharged to dining environment, avoid the adverse effects caused by oil fume and peculiar smell when eating hot pot and barbecue on dining environment.

Description

Technical Field

[0001] This invention relates to an integrated hot pot device and its purification method that combines the purification of oil fumes from a Taiwanese-style grill and hot pot, belonging to the technical field of smoke purification design for integrated hot pot devices. Background Technology

[0002] When eating hot pot or barbecue, a large amount of oily fumes, water vapor, and odors are generated, which greatly affects the dining environment. Existing fume exhaust devices generally use pipes to vent the fumes outdoors, but this still affects the outdoor environment. Currently, there is no fume exhaust device that directly releases the oily fumes generated when eating hot pot or barbecue into the dining environment. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art by providing an integrated device for purifying oil fumes from a Taiwanese-style grill and hot pot, and a purification method thereof.

[0004] The objective of this invention is achieved as follows: a tabletop hot pot integrated device for purifying oil fumes, comprising a hot pot integrated device, characterized in that: the hot pot integrated device is provided with an oil fume purification channel, the top of the oil fume purification channel extends out of the hot pot integrated device, and the air inlet of the oil fume purification channel is located on the side of the oil fume purification channel extending out of the hot pot integrated device; the top of the oil fume purification channel is covered with an end cap; the air outlet of the oil fume purification channel is located around the hot pot integrated device, and the air outlet surface of the oil fume purification channel faces upwards from the air inlet of the oil fume purification channel.

[0005] The oil fume purification channel inside the hot pot integrated device is equipped with an external rotor motor, which is fixed to the bottom of the hot pot integrated device. A centrifugal fan is fixed on the outer rotor of the external rotor motor. The oil fume purification channel is also equipped with a filtration and purification device.

[0006] The integrated hot pot device is equipped with an annular hot pot trough and an annular baking pan trough. The annular hot pot and the annular baking pan are respectively placed on the annular hot pot trough and the annular baking pan. The oil fume purification channel extending out of the integrated hot pot device is placed in the middle of the annular hot pot and the annular baking pan.

[0007] The baking pan is provided with an oil collection groove, and the hot pot integrated device is provided with an oil and water collection trough. The oil and water collection trough is plugged into or threadedly connected to the hot pot integrated device. The baking pan oil collection groove and the oil and water collection trough are connected through a groove or pipe, and the oil and water collection trough is lower than the baking pan oil collection groove.

[0008] The annular baking pan groove is placed inside the annular hot pot groove, and the annular hot pot groove surrounds the annular baking pan groove. The top edge of the annular hot pot is provided with a hot pot air outlet corresponding to the air outlet of the oil fume purification channel.

[0009] The annular hot pot trough and the annular baking pan trough are respectively equipped with a hot pot heat reflector plate and a baking pan heat reflector plate. The hot pot heat reflector plate is equipped with a hot pot heating tube, which is placed between the hot pot heat reflector plate and the hot pot. The baking pan heat reflector plate is equipped with a baking pan heating tube, which is placed between the baking pan heat reflector plate and the baking pan.

[0010] The heating element for the hot pot and the heating element for the baking pan are connected to an external power source.

[0011] The air inlet of the fume purification channel is provided with a melt-blown oil filter and a metal gas-liquid separator in sequence from the outside to the inside. The metal gas-liquid separator is fixed to the side wall of the hot pot integrated device that extends from the fume purification channel, and the melt-blown oil filter covers the outer wall of the metal gas-liquid separator.

[0012] The fume purification channel is equipped with an activated carbon sponge filter and a plasma purification device in sequence. The activated carbon sponge filter and the plasma purification device are located above the external rotor motor and the centrifugal impeller. A filter screen is installed in the fume purification channel on the side of the external rotor motor and the centrifugal impeller. The filter screen is located between the external rotor motor and the centrifugal impeller and the air outlet of the fume purification channel.

[0013] The plasma purification device includes a plasma negative electrode generator and a plasma positive electrode dust collection screen. A bracket is provided in the oil fume purification channel below the activated carbon sponge filter screen. The bracket is fixed in the oil fume purification channel, and the plasma negative electrode generator is installed and fixed on the bracket.

[0014] The plasma positive electrode dust collection net is located below the plasma negative electrode generator, and the plasma negative electrode generator and the plasma positive electrode dust collection net form a plasma purification device.

[0015] The plasma negative electrode generator and the plasma positive electrode dust collection screen are connected to an external power supply.

[0016] The filtration and purification device consists of melt-blown oil filter screen, metal gas-liquid separator screen, activated carbon sponge filter screen, plasma purification device, and filter screen.

[0017] The bottom of the metal gas-liquid separation mesh is provided with a water collection ditch, and the hot pot integrated device is provided with an oil-water collection tank. The water collection ditch and the oil-water collection tank are connected by a ditch or pipe. The oil-water collection tank is lower than the water collection ditch, and the oil-water collection tank is plugged into or threadedly tightened to the hot pot integrated device.

[0018] A purification method for a tabletop hot pot integrated device that combines grilling and sizzling oil fume purification is characterized by: an external rotor motor connected to an external power source; starting the external rotor motor; the rotation of the external rotor on the external rotor motor drives the centrifugal fan to rotate; the oil fumes generated on the integrated hot pot device enter the oil fume purification channel through the air inlet, and are filtered by the filtration device before being discharged from the air outlet of the oil fume purification channel; since the air outlet of the oil fume purification channel is located around the integrated hot pot device, and the air outlet faces upwards from the air inlet of the oil fume purification channel, the oil fumes, after being filtered by the filtration device, are discharged from the air outlet of the oil fume purification channel in an upward direction towards the air inlet of the oil fume purification channel, forming an annular air curtain upon discharge; the upward-moving oil fumes generated on the integrated hot pot device are suppressed by the annular air curtain, ensuring that the oil fumes generated on the integrated hot pot device flow towards the air inlet of the oil fume purification channel.

[0019] The integrated hot pot device is equipped with an annular hot pot trough and an annular baking pan trough. Annular hot pots and annular baking pans are placed on the annular hot pot trough and annular baking pan trough, respectively. The oil fume purification channel extending from the integrated hot pot device is located between the annular hot pot and annular baking pan. A hot pot heat reflector plate and a baking pan heat reflector plate are respectively installed in the annular hot pot trough and annular baking pan trough. A hot pot heating tube is installed on the hot pot heat reflector plate and is positioned between the hot pot heat reflector plate and the hot pot. A baking pan heating tube is installed on the baking pan heat reflector plate and is positioned between the baking pan heat reflector plate and the baking pan. The hot pot heating tube and the baking pan heating tube are connected to an external power source.

[0020] When the heating element of the hot pot and the heating element of the baking pan are connected to the power supply, the hot pot and the baking pan are heated. The oil fumes generated by the hot pot and the baking pan during use enter the oil fume purification channel through the air inlet.

[0021] The ring-shaped hot pot trough is wrapped around the ring-shaped grill trough. The top edge of the ring-shaped hot pot is equipped with a hot pot air outlet corresponding to the air outlet of the oil fume purification channel. After the oil fume is filtered and treated by the filtration and purification device, it is discharged from the air outlet of the oil fume purification channel and the hot pot air outlet towards the air inlet of the oil fume purification channel, forming a ring-shaped air curtain when it is sprayed out.

[0022] The baking pan is equipped with an oil collection groove, and the hot pot integrated device is equipped with an oil and water collection trough. The oil and water collection trough is plugged into or screwed into the hot pot integrated device. The baking pan oil collection groove and the oil and water collection trough are connected by a groove or pipe. The oil and water collection trough is lower than the baking pan oil collection groove. The oil and water in the baking pan fall into the baking pan oil collection groove and flow into the oil and water collection trough through the groove or pipe.

[0023] From the outside to the inside, the air inlet of the fume purification channel is provided with a melt-blown oil filter and a metal gas-liquid separator. The metal gas-liquid separator is fixed to the side wall of the hot pot integrated device that extends from the fume purification channel, and the melt-blown oil filter covers the outer wall of the metal gas-liquid separator.

[0024] An activated carbon sponge filter and a plasma purification device are sequentially installed in the fume purification channel. The activated carbon sponge filter and the plasma purification device are located above the external rotor motor and the centrifugal impeller. A filter screen is installed in the fume purification channel on the side of the external rotor motor and the centrifugal impeller. The filter screen is located between the external rotor motor and the centrifugal impeller and the air outlet of the fume purification channel.

[0025] The plasma purification device includes a plasma negative electrode generator and a plasma positive electrode dust collection screen. A support is installed in the fume purification channel below the activated carbon sponge filter, and the support is fixed in the fume purification channel. The plasma negative electrode generator is installed and fixed on the support. The plasma positive electrode dust collection screen is located below the plasma negative electrode generator. The plasma negative electrode generator and the plasma positive electrode dust collection screen form a plasma purification device. The plasma negative electrode generator and the plasma positive electrode dust collection screen are connected to an external power supply.

[0026] The cooking fumes undergo oil-gas separation at the inlet of the fume purification channel via a melt-blown oil filter, removing the oil. Next, the fumes pass through a metal gas-liquid separator to further separate the liquid. Then, an activated carbon sponge filter provides initial filtration of particles and odors. Following this, a plasma purification device further filters the fumes, eliminating particles and odors. In this device, the negative plasma generator and positive plasma dust collector are energized. The negative plasma generator produces negative ions to capture particles and odors, which are then adsorbed by the positive plasma dust collector. Finally, the fumes undergo final filtration through a filter. The filtered airflow is then discharged from the outlet of the fume purification channel towards the top of the inlet.

[0027] The filter is a nano-silver ion high-efficiency filter.

[0028] This invention features a reasonable structure and convenient use, and its method for exhausting and filtering oil fumes is advanced and scientific. The invention provides a smoke exhaust device and method for an integrated hot pot appliance. In use, an external rotor motor is connected to an external power source. The rotation of the external rotor on the motor drives the centrifugal impeller. Oil fumes generated on the integrated hot pot appliance enter the oil fume purification channel through the air inlet. After being filtered by the purification device, the fumes are discharged from the air outlet of the oil fume purification channel upwards towards the air inlet, forming a ring-shaped air curtain. The upward-moving oil fumes generated on the integrated hot pot appliance are suppressed by the ring-shaped air curtain, ensuring that the oil fumes flow towards the air inlet of the oil fume purification channel. When hot pots and grill pans are placed on the integrated hot pot device, the oil fumes generated during use enter the oil fume purification channel through the air inlet. The annular hot pot trough is wrapped around the annular grill pan trough, and the top edge of the annular hot pot has an air outlet corresponding to the air outlet of the oil fume purification channel. After being filtered and treated by the filtration and purification device, the oil fumes are discharged from the air outlet of the oil fume purification channel and the hot pot air outlet towards the air inlet of the oil fume purification channel, forming an annular air curtain when sprayed out. The oil and water in the grill pan fall into the oil collection groove of the grill pan and flow into the oil and water collection tank through the groove or pipe.

[0029] Furthermore, the oil fumes undergo oil-gas separation at the inlet of the oil fume purification channel via a melt-blown oil filter, which removes the oil. Next, the fumes pass through a metal gas-liquid separator to achieve gas-liquid separation, filtering out the liquid. Then, an activated carbon sponge filter provides initial filtration of particles and odors. Following this, a plasma purification device formally filters the particles and odors. In this device, the negative plasma generator and positive plasma dust collector are energized. The negative plasma generator produces negative ions to capture particles and odors from the fumes, which are then adsorbed by the positive plasma dust collector. Finally, the fumes undergo final filtration through a filter screen. The filtered airflow is then discharged from the outlet of the oil fume purification channel towards the top of the inlet.

[0030] This invention facilitates the direct discharge of oil fumes from the integrated hot pot device into the dining environment, effectively preventing the adverse effects of oil fumes and odors from hot pot and barbecue on the dining environment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] In the diagram: 1. Hot pot integrated device; 2. Oil fume purification channel; 3. End cover; 4. External rotor motor; 5. Centrifugal impeller; 6. Hot pot; 7. Baking tray; 8. Hot pot heat reflector; 9. Baking tray heat reflector; 10. Hot pot heating tube; 11. Baking tray heating tube; 12. Sprayed melt filter screen; 13. Metal gas-liquid separator; 14. Activated carbon sponge filter; 15-1. Plasma negative electrode generator; 15-2. Plasma positive electrode dust collection screen; 16. Filter screen; 17. Water collection ditch; 18. Oil and water collection tank; 19. Baking tray oil collection ditch; 20. Hot pot heat insulation pad; 21. Baking tray heat insulation pad; 22. Hot pot air outlet. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and description.

[0034] An integrated hot pot device for grilling and sizzling, comprising a hot pot device 1, an oil fume purification channel 2 within the hot pot device 1, the top of the oil fume purification channel 2 extending out of the hot pot device 1, and an air inlet located on the side of the oil fume purification channel 2 extending out of the hot pot device 1; an end cap 3 covering the top of the oil fume purification channel 2; air outlets of the oil fume purification channel 2 located around the hot pot device 1, with the outlet facing upwards from the air inlet; an external rotor motor 4 installed within the oil fume purification channel 2 in the hot pot device 1, fixed to the bottom of the hot pot device 1, with a centrifugal impeller 5 fixed to the outer rotor of the external rotor motor 4; and a filtration and purification device also installed within the oil fume purification channel 2.

[0035] An annular hot pot trough and an annular baking pan trough are provided on the hot pot integrated device 1. Annular hot pots 6 and annular baking pans 7 are placed on the annular hot pot trough and annular baking pan 7 respectively. The oil fume purification channel 2 extending from the hot pot integrated device 1 is located between the annular hot pots 6 and annular baking pans 7. An oil collection groove 19 is provided on the baking pan 7, and an oil and water collection trough 18 is provided on the hot pot integrated device 1. The oil and water collection trough 18 is plugged into or threadedly tightened to the hot pot integrated device 1. The oil collection groove 19 and the oil and water collection trough 18 are connected through a groove or pipe, and the oil and water collection trough 18 is lower than the oil collection groove 19. The annular baking pan trough is placed inside the annular hot pot trough, and the annular hot pot trough surrounds the annular baking pan trough. The top edge of the annular hot pot 6 has a hot pot air outlet 22 corresponding to the air outlet of the oil fume purification channel 2.

[0036] A hot pot heat reflector 8 and a baking pan heat reflector 9 are respectively installed in the annular hot pot trough and the annular baking pan trough. A hot pot heating tube 10 is installed on the hot pot heat reflector 8 and is placed between the hot pot heat reflector 8 and the hot pot 6. A baking pan heating tube 11 is installed on the baking pan heat reflector 9 and is placed between the baking pan heat reflector 9 and the baking pan 7. The hot pot heating tube 10 and the baking pan heating tube 11 are connected to an external power source.

[0037] From the outside to the inside, the oil fume purification channel 2 is provided with a melt-blown oil filter 12 and a metal gas-liquid separator 13. The metal gas-liquid separator 13 is fixed to the side wall of the hot pot integrated device 1 that extends from the oil fume purification channel 2, and the melt-blown oil filter 12 covers the outer wall of the metal gas-liquid separator 13.

[0038] An activated carbon sponge filter 14 and a plasma purification device are sequentially installed in the fume purification channel 2. The activated carbon sponge filter 14 and the plasma purification device are located above the external rotor motor 4 and the centrifugal impeller 5. A filter screen 16 is installed in the fume purification channel 2 on the side of the external rotor motor 4 and the centrifugal impeller 5. The filter screen 16 is located between the external rotor motor 4, the centrifugal impeller 5 and the air outlet of the fume purification channel 2.

[0039] The plasma purification device includes a plasma negative electrode generator 15-1 and a plasma positive electrode dust collection screen 15-2. A bracket is provided in the oil fume purification channel 2 below the activated carbon sponge filter screen 14. The bracket is fixed in the oil fume purification channel 2, and the plasma negative electrode generator 15-1 is installed and fixed on the bracket.

[0040] The plasma positive electrode dust collection screen 15-2 is located below the plasma negative electrode generator 15-1. The plasma negative electrode generator 15-1 and the plasma positive electrode dust collection screen 15-2 form a plasma purification device. The plasma negative electrode generator 15-1 and the plasma positive electrode dust collection screen 15-2 are connected to an external power supply. The melt-blown oil filter screen 12, the metal gas-liquid separation screen 13, the activated carbon sponge filter screen 14, the plasma purification device, and the filter screen 16 constitute a filtration and purification device.

[0041] A water collection ditch 17 is provided at the bottom of the metal gas-liquid separation net 13, and an oil-water collection tank 18 is provided on the hot pot integrated device 1. The water collection ditch 17 and the oil-water collection tank 18 are connected by a ditch or pipe. The oil-water collection tank 18 is lower than the water collection ditch 17, and the oil-water collection tank 18 is plugged into or threadedly tightened to the hot pot integrated device 1.

[0042] A hot pot heat-insulating pad 20 and a baking pan heat-insulating pad 21 are respectively provided on the hot pot heat reflector 8 and the baking pan heat reflector 9.

[0043] In use, the external rotor motor 4 is connected to an external power source. When the external rotor motor 4 is started, the rotation of the external rotor on the external rotor motor 4 drives the centrifugal impeller 5 to rotate. The oil fumes generated on the hot pot integrated device 1 enter the oil fume purification channel 2 through the air inlet of the oil fume purification channel 2, and are discharged from the air outlet of the oil fume purification channel 2 after being filtered by the filtration and purification device. Since the air outlet of the oil fume purification channel 2 is located around the hot pot integrated device 1, and the air outlet of the oil fume purification channel 2 faces the air inlet of the oil fume purification channel 2, the oil fumes are discharged from the air outlet of the oil fume purification channel 2 towards the air inlet of the oil fume purification channel 2 after being filtered by the filtration and purification device, forming an annular air curtain when sprayed out. The upward oil fumes generated on the hot pot integrated device 1 are suppressed by the annular air curtain, ensuring that the oil fumes generated on the hot pot integrated device 1 flow towards the air inlet of the oil fume purification channel 2.

[0044] The hot pot heating element 10 and the baking pan heating element 11 are connected to the power supply, and the hot pot 6 and the baking pan 7 are heated. The oil fumes generated by the hot pot 6 and the baking pan 7 during use enter the oil fume purification channel 2 through the air inlet of the oil fume purification channel 2. The annular hot pot trough is wrapped around the annular baking pan trough. The top edge of the annular hot pot 6 is provided with a hot pot air outlet 22 corresponding to the air outlet of the oil fume purification channel 2. After the oil fumes are filtered and treated by the filtration and purification device, they are discharged from the air outlet of the oil fume purification channel 2 and the hot pot air outlet 22 towards the air inlet of the oil fume purification channel 2, forming an annular air curtain when sprayed out. The baking pan oil collection groove 19 and the oil and water collection tank 18 are connected by a groove or pipe. The oil and water collection tank 18 is lower than the baking pan oil collection groove 19. The oil and water in the baking pan 7 fall into the baking pan oil collection groove 19 and flow into the oil and water collection tank 18 through the groove or pipe.

[0045] During filtration, the oil fumes undergo oil-gas separation at the inlet of the oil fume purification channel 2 via a melt-blown oil filter 12, removing the oil. Next, the fumes pass through a metal gas-liquid separator 13 for gas-liquid separation, filtering out the liquid. Then, the fumes pass through an activated carbon sponge filter 14 for preliminary filtration of particles and odors. Next, the fumes undergo formal filtration via a plasma purification device. In this device, the plasma negative electrode generator 15-1 and the plasma positive electrode dust collector 15-2 are energized. The negative electrode generator 15-1 generates negative ions to capture particles and odors in the fumes, which are then adsorbed by the plasma positive electrode dust collector 15-2. Finally, the fumes undergo final filtration via a filter 16. The filtered airflow forms a fresh airflow that exits from the outlet of the oil fume purification channel 2 towards the upper part of the inlet. The filter 16 is a nano-silver ion high-efficiency filter.

Claims

1. A method for purifying a tabletop integrated hot pot device for cooking, dipping and oil fume, comprising a hot pot integrated device (1), characterized in that: The chafing dish integrated device (1) is internally provided with an oil fume purification channel (2), the top of the oil fume purification channel (2) extends out of the chafing dish integrated device (1), and the air inlet of the oil fume purification channel (2) is arranged on the side of the oil fume purification channel (2) extending out of the chafing dish integrated device (1), and the top of the oil fume purification channel (2) is covered with an end cover (3); the air outlets of the oil fume purification channel (2) are arranged on the periphery of the chafing dish integrated device (1), and the air outlets of the oil fume purification channel (2) face the upper side of the air inlet of the oil fume purification channel (2); The oil fume purification channel (2) in the chafing dish integrated device (1) is internally provided with an outer rotor motor (4), the outer rotor motor (4) is fixed to the bottom in the chafing dish integrated device (1), and a centrifugal fan wheel (5) is fixed to the outer rotor of the outer rotor motor (4); the oil fume purification channel (2) is further provided with a filtering and purifying device; The air inlet of the oil fume purification channel (2) is sequentially provided, from outside to inside, with a spray melting oil filter screen (12) and a metal gas-liquid separation screen (13), the metal gas-liquid separation screen (13) is fixed to the side wall of the oil fume purification channel (2) extending out of the chafing dish integrated device (1), and the spray melting oil filter screen (12) is wrapped on the outer wall of the metal gas-liquid separation screen (13); The oil fume purification channel (2) is sequentially provided with an activated carbon sponge filter screen (14) and a plasma purification device, the activated carbon sponge filter screen (14) and the plasma purification device are located above the outer rotor motor (4) and the centrifugal fan wheel (5); the oil fume purification channel (2) on the side of the outer rotor motor (4) and the centrifugal fan wheel (5) is provided with a filter screen (16) between the outer rotor motor (4), the centrifugal fan wheel (5) and the air outlet of the oil fume purification channel (2); the filter screen (16) is a nano silver ion high-efficiency filter screen; The plasma purification device comprises a plasma negative electrode generator (15-1) and a plasma positive electrode dust collection screen (15-2), the oil fume purification channel (2) below the activated carbon sponge filter screen (14) is provided with a support fixed in the oil fume purification channel (2), and the plasma negative electrode generator (15-1) is mounted and fixed on the support; The plasma positive electrode dust collection screen (15-2) is located below the plasma negative electrode generator (15-1), and the plasma negative electrode generator (15-1) and the plasma positive electrode dust collection screen (15-2) form the plasma purification device; The plasma negative electrode generator (15-1) and the plasma positive electrode dust collection screen (15-2) are connected with a power supply; The spray melting oil filter screen (12), the metal gas-liquid separation screen (13), the activated carbon sponge filter screen (14), the plasma purification device and the filter screen (16) constitute the filtering and purifying device; The chafing dish integrated device (1) is provided with a ring-shaped chafing dish groove and a ring-shaped baking tray groove, a ring-shaped chafing dish (6) and a ring-shaped baking tray (7) are respectively arranged on the ring-shaped chafing dish groove and the ring-shaped baking tray groove, and the part of the oil fume purification channel (2) extending out of the chafing dish integrated device (1) is arranged between the ring-shaped chafing dish (6) and the ring-shaped baking tray (7). The grill plate (7) is provided with a grill plate oil collecting groove (19), and the hot pot integrated device (1) is provided with an oil and water collecting groove (18) which is connected with the hot pot integrated device (1) through insertion or screwing. The annular hot pot groove is arranged in the annular hot pot groove, and the annular hot pot groove surrounds the annular grill plate groove, and the annular hot pot (6) is provided with a hot pot air outlet which corresponds to the air outlet of the oil fume purification channel (2). In use, the outer rotor motor (4) is connected with a power source, the outer rotor motor (4) is started, the outer rotor of the outer rotor motor (4) rotates to drive the centrifugal fan (5) to rotate, the oil fume generated on the hot pot integrated device (1) enters the oil fume purification channel (2) through the air inlet of the oil fume purification channel (2), and is filtered and treated by the filter purification device and then discharged from the air outlet of the oil fume purification channel (2). Since the air outlet of the oil fume purification channel (2) is arranged around the hot pot integrated device (1) and faces the upper side of the air inlet of the oil fume purification channel (2), the oil fume filtered and treated by the filter purification device is discharged from the air outlet of the oil fume purification channel (2) to the upper side of the air inlet of the oil fume purification channel (2), and forms a ring-shaped air curtain when being discharged. The upward oil fume generated on the hot pot integrated device (1) is suppressed by the ring-shaped air curtain, so that the oil fume generated on the hot pot integrated device (1) flows to the air inlet of the oil fume purification channel (2).

2. The method of claim 1, wherein: The annular hot pot groove, the annular grill plate groove are respectively provided with a hot pot heat reflecting plate (8) and a grill plate heat reflecting plate (9), the hot pot heat reflecting plate (8) is provided with a hot pot heating pipe (10), and the hot pot heating pipe (10) is arranged between the hot pot heat reflecting plate (8) and the hot pot (6); the grill plate heat reflecting plate (9) is provided with a grill plate heating pipe (11), and the grill plate heating pipe (11) is arranged between the grill plate heat reflecting plate (9) and the grill plate (7). The hot pot heating pipe (10) and the grill plate heating pipe (11) are connected with a power source.

3. The method of claim 1, wherein: The metal gas-liquid separation net (13) is provided with a water collecting groove (17), and the hot pot integrated device (1) is provided with an oil and water collecting groove (18), the water collecting groove (17) and the oil and water collecting groove (18) are connected through a groove or a pipeline, the oil and water collecting groove (18) is lower than the water collecting groove (17), and the oil and water collecting groove (18) is connected with the hot pot integrated device (1) through insertion or screwing.

4. The method of claim 1, characterized by: The chafing dish integrated device (1) is provided with a ring-shaped chafing dish groove and a ring-shaped baking tray groove. A ring-shaped chafing dish (6) and a ring-shaped baking tray (7) are respectively arranged in the ring-shaped chafing dish groove and the ring-shaped baking tray groove. An oil fume purification channel (2) extending out of the chafing dish integrated device (1) is arranged between the ring-shaped chafing dish (6) and the ring-shaped baking tray (7). A chafing dish heat reflecting plate (8) and a baking tray heat reflecting plate (9) are respectively arranged in the ring-shaped chafing dish groove and the ring-shaped baking tray groove. A chafing dish heating pipe (10) is arranged on the chafing dish heat reflecting plate (8) and between the chafing dish heat reflecting plate (8) and the chafing dish (6). A baking tray heating pipe (11) is arranged on the baking tray heat reflecting plate (9) and between the baking tray heat reflecting plate (9) and the baking tray (7). The chafing dish heating pipe (10) and the baking tray heating pipe (11) are connected with a power supply. The chafing dish heating pipe (10) and the baking tray heating pipe (11) are connected with the power supply, and the chafing dish (6) and the baking tray (7) are heated. Oil fume generated during use of the chafing dish (6) and the baking tray (7) enters the oil fume purification channel (2) from an air inlet of the oil fume purification channel (2). The ring-shaped chafing dish groove is arranged around the ring-shaped baking tray groove. The ring-shaped chafing dish (6) is provided with a chafing dish air outlet (22) corresponding to an air outlet of the oil fume purification channel (2). Oil fume is filtered by a filtering and purifying device, and then discharged from the air outlet of the oil fume purification channel (2) and the chafing dish air outlet (22) to an upper edge of the air inlet of the oil fume purification channel (2). When the oil fume is discharged, a ring-shaped air curtain is formed. The baking tray (7) is provided with a baking tray oil collecting groove (19), and the chafing dish integrated device (1) is provided with an oil and water collecting groove (18). The oil and water collecting groove (18) is connected with the chafing dish integrated device (1) by insertion or screwing. The baking tray oil collecting groove (19) and the oil and water collecting groove (18) are connected by a groove or a pipeline. The oil and water collecting groove (18) is lower than the baking tray oil collecting groove (19). Oil and water in the baking tray (7) fall into the baking tray oil collecting groove (19) and then flow into the oil and water collecting groove (18) through the groove or the pipeline.

5. The method of claim 1 wherein the step of applying a voltage comprises applying a voltage of between 0.1 and 10 volts. The air inlet of the oil fume purification channel (2) is provided with a spray melting oil filter screen (12) and a metal gas-liquid separation screen (13) from outside to inside. The metal gas-liquid separation screen (13) is fixed to a side wall of the oil fume purification channel (2) extending out of the chafing dish integrated device (1). The spray melting oil filter screen (12) is wrapped on an outer wall of the metal gas-liquid separation screen (13). The oil fume purification channel (2) is provided with an activated carbon sponge filter screen (14) and a plasma purification device from inside to outside. The activated carbon sponge filter screen (14) and the plasma purification device are located above an outer rotor motor (4) and a centrifugal fan wheel (5). A filter screen (16) is arranged in the oil fume purification channel (2) at a side of the outer rotor motor (4) and the centrifugal fan wheel (5). The filter screen (16) is located between the outer rotor motor (4), the centrifugal fan wheel (5) and an air outlet of the oil fume purification channel (2). The plasma purification device comprises a plasma negative electrode generator (15-1), a plasma positive electrode dust collecting net (15-2), and an oil fume purification channel (2) below an active carbon sponge filter net (14) is provided with a support fixed in the oil fume purification channel (2), and the plasma negative electrode generator (15-1) is fixed on the support; the plasma positive electrode dust collecting net (15-2) is located below the plasma negative electrode generator (15-1), and the plasma negative electrode generator (15-1) and the plasma positive electrode dust collecting net (15-2) form the plasma purification device; the plasma negative electrode generator (15-1) and the plasma positive electrode dust collecting net (15-2) are connected with a power supply; The oil fume is separated into oil and gas through a spray melting oil filter net (12) at an air inlet of the oil fume purification channel (2), and the oil in the oil fume is filtered through the spray melting oil filter net (12); then the oil fume is separated into gas and liquid through a metal gas-liquid separation net (13), and the liquid in the oil fume is filtered; then the oil fume is preliminarily filtered through the active carbon sponge filter net (14) to remove particles and odors in the oil fume; then the oil fume is formally filtered through the plasma purification device to remove particles and odors in the oil fume, the plasma negative electrode generator (15-1) and the plasma positive electrode dust collecting net (15-2) in the plasma purification device are powered, and negative ions are generated under the action of the plasma negative electrode generator (15-1) to capture particles and odors in the oil fume, and the captured particles and odors in the oil fume are adsorbed by the plasma positive electrode dust collecting net (15-2); finally, the oil fume is finally filtered through a filter net (16); the filtered fresh air flow is discharged from the air outlet of the oil fume purification channel (2) to the upper side of the air inlet of the oil fume purification channel (2).

6. The method of claim 1, characterized by: The filter net (16) is a nano silver ion high-efficiency filter net.

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