Cooking equipment and heat pumping and discharging method

Abstract

The invention provides cooking equipment and a heat pumping and discharging method, the cooking equipment comprises a machine body, a pumping and discharging assembly, an inner container and a door plate, the machine body is provided with a container containing cavity and an air vent, and the air vent communicates with the container containing cavity and penetrates through the outer side of the machine body; the pumping and discharging assembly comprises a heat discharging piece arranged on the machine body and provided with a heat discharging channel and further comprises a pumping and sucking piece arranged on the heat discharging piece, and the pumping and sucking piece comprises a first air inlet end, a second air inlet end and an air outlet side communicating with the heat discharging channel. The inner container is arranged in the container containing cavity and provided with a cooking cavity, and a cooling air channel communicating with the first air inlet end is formed between the inner wall of the container containing cavity and the outer wall of the inner container. The door plate is connected with the machine body to open and close the cooking cavity. A suction air channel is formed between the door plate and the second air inlet end.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to a cooking device and a heat extraction method. Background Art

[0002] Steam ovens, ovens and other cooking equipment still have residual heat after use, and users are at risk of being scalded. Some existing cooking equipment is equipped with exhaust components for eliminating residual heat. This type of cooking equipment has the problem of uneven residual heat elimination. The cooling effect of the machine body is better than the cooling effect of the door panel. This problem is particularly evident in cooking equipment with high-temperature self-cleaning function. In high-temperature self-cleaning mode, the temperature in the inner tank of the cooking equipment needs to be maintained far higher than the standard boiling point for a long time. During this period, the door panel accumulates a lot of heat and the temperature is extremely high. Traditional exhaust components are difficult to meet the heat dissipation needs of the door panel. It is possible that the heat dissipation effect of the machine body is significant and sufficient, but the heat dissipation effect of the door panel is weak and limited. Summary of the invention

[0003] In view of this, the present invention provides a cooking device and a heat extraction method, so as to realize the functions of heat dissipation of the machine body and the heat dissipation of the door panel as well as the cooling effect.

[0004] The cooking device of the present invention includes a body, an exhaust assembly, an inner pot and a door panel, the body having a pot cavity and an air vent, the air vent is connected to the pot cavity and penetrates the outer side of the body; the exhaust assembly includes a heat exhaust component arranged on the body and having a heat exhaust channel, and also includes a suction component arranged on the heat exhaust component, the suction component includes a first air inlet end, a second air inlet end and an air outlet side connected to the heat exhaust channel; the inner pot is arranged in the pot cavity and has a cooking cavity, and a cooling air duct connected to the first air inlet end is formed between the inner wall of the pot cavity and the outer wall of the inner pot; the door panel is connected to the body to open and close the cooking cavity, and a suction air duct is formed between the door panel and the second air inlet end.

[0005] Compared with the prior art, the cooking device of the present invention has the following beneficial effects:

[0006] 1) It has the functions of heat dissipation of the machine body and the door panel and can perform heat dissipation of the machine body and the door panel at the same time. When the suction piece is in operation, the low-temperature air outside the machine body enters the pot cavity from the vent, then flows along the cooling air duct to the first air inlet end and absorbs the heat inside the machine body and the outer wall of the inner pot, and finally is blown into the heat exhaust channel from the air outlet side and discharged outside the machine body to achieve heat dissipation of the machine body. At the same time, the high-temperature gas in the cooking cavity flows through the door panel under the suction action of the suction piece, and then is sucked into the suction air duct and flows to the second air inlet end, and finally is blown into the heat exhaust channel from the air outlet side and discharged outside the machine body to achieve heat dissipation of the door panel;

[0007] 2) When the heat dissipation of the fuselage and the door panel is carried out at the same time, the cooling effect of the fuselage and the door panel can be guaranteed. The low-temperature air and the high-temperature air are sucked into the suction member from the first air inlet end and the second air inlet end respectively, so as to avoid the low-temperature air and the high-temperature air being sucked into the suction member from the same air inlet position, thereby overcoming the defect that the low-temperature air and the high-temperature air interfere with each other when the suction member sucks the low-temperature air and the high-temperature air at the same time, helping to reduce the power consumption required for the operation of the suction member, and preventing one of the low-temperature air and the high-temperature air from hindering and inhibiting the suction of the other by the suction member, thereby avoiding the situation where one of the fuselage cooling and the door panel cooling has a significant cooling effect and dominates, while the cooling effect of the other is weak.

[0008] In some embodiments, the suction piece is arranged between the top wall of the inner pot and the top wall of the pot cavity, the second air inlet end is an end of the suction piece relatively close to the top wall of the inner pot, the suction air duct is located on the side of the top wall of the inner pot facing away from the cooking cavity, and extends along the top wall of the inner pot to the door panel.

[0009] In some embodiments, the inner pot includes an inlet end having a cooking cavity opening, and a heat extraction gap is formed between the door panel and the inlet end, and the heat extraction gap connects the suction duct and the cooking cavity.

[0010] In some embodiments, the exhaust assembly also includes a suction flat cover disposed on the top wall of the inner pot and connected to the heat exhaust component. The suction flat cover is provided with a suction air duct, which penetrates one end of the suction flat cover relatively close to the door panel and forms a suction slit extending along the edge of the cooking cavity opening.

[0011] In some embodiments, a cooling air duct is formed between the side wall of the bile cavity and the side wall of the inner liner, a suction piece is arranged between the top wall of the inner liner and the top wall of the bile cavity, the first air inlet end is spaced apart from the top wall of the bile cavity and forms an accumulation air duct, and the accumulation air duct is connected to the cooling air duct.

[0012] In some embodiments, the vent is opened at the bottom of the fuselage, the cooling air duct extends vertically and passes through the bottom of the inner tank, and the accumulation air duct and the vent are respectively connected to the two ends of the cooling air duct.

[0013] In some embodiments, the heat exhaust component includes a partition and a volute accommodating a suction component, the inner cavity of the volute is connected to the heat exhaust channel and is divided into a first cavity and a second cavity by the partition, and the air outlet side includes a first peripheral side located in the first cavity and a second peripheral side located in the second cavity, and the first peripheral side and the second peripheral side are respectively used to blow the airflow from the first air inlet end and the second air inlet end into the heat exhaust channel.

[0014] In some embodiments, the suction member includes a first wind wheel and a second wind wheel coaxially connected, the outer peripheral side of the first wind wheel and the outer peripheral side of the second wind wheel form a first peripheral side and a second peripheral side, and the first air inlet end and the second air inlet end are the air inlet end of the first wind wheel and the air inlet end of the second wind wheel respectively.

[0015] In some embodiments, the suction piece is arranged between the top wall of the inner liner and the top wall of the liner cavity, the first air inlet end is formed at an end of the first wind wheel facing away from the second wind wheel and close to the top wall of the liner cavity, and the second air inlet end is formed at an end of the second wind wheel facing away from the first wind wheel and close to the top wall of the inner liner.

[0016] In some embodiments, the partition is controllably and movably disposed in the volute, and the volume ratio of the first cavity to the second cavity and the ratio of the air outlet area of ​​the first circumferential side to the second circumferential side change as the partition is controlled to move.

[0017] In some embodiments, the cooking device further includes a control unit, a first temperature measuring component and a second temperature measuring component, wherein the first temperature measuring component and the second temperature measuring component are used to measure the temperature of the gallbladder cavity and the cooking cavity, respectively, and the control unit controls the movement of the partition according to the temperature of the gallbladder cavity and the cooking cavity.

[0018] In some embodiments, the ratio of the effective air inlet area of ​​the first air inlet end to the effective air inlet area of ​​the second air inlet end is A, and the ratio of the volume of the first cavity to the volume of the second cavity is B;

[0019] The extraction component has at least a normal extraction state and a self-cleaning extraction state.

[0020] When the extraction component is in the normal extraction state, A=B; when the extraction component is in the self-cleaning extraction state, A>B.

[0021] In some embodiments, the exhaust assembly further includes an exhaust drive member for driving the suction member to extract air from the suction air duct and the cooling air duct, and the exhaust drive member is connected to the suction member at the first air inlet end, and A=3 / 7.

[0022] The heat extraction method of the present invention comprises:

[0023] Driving the suction member to rotate, so that the suction member draws air from the cooling air duct through the first air inlet end, and the suction member draws air from the suction air duct through the second air inlet end;

[0024] Blowing the air drawn from the first air inlet end into the heat exhaust passage through the first peripheral side, and blowing the air drawn from the second air inlet end into the heat exhaust passage through the second peripheral side;

[0025] Monitor the temperature of the cooking cavity Q1 and the temperature of the cooking cavity Q2 and obtain ΔQ, ΔQ = |Q1-Q2|;

[0026] If ΔQ is greater than the preset temperature difference, the partition is controlled to move and the volume ratio of the first chamber to the second chamber is changed until ΔQ is less than or equal to the preset temperature difference.

[0027] The heat extraction method of the present invention can realize the heat dissipation of the fuselage and the door panel at the same time, and the heat dissipation effect of the fuselage and the door panel are both guaranteed. According to the relationship between ΔQ and the preset temperature difference, it is judged whether the heat dissipation effect of the fuselage and the heat dissipation effect of the door panel are balanced. By changing the volume ratio of the first cavity and the second cavity, the ratio of the power P1 required for the suction piece to suck low-temperature air and the power P2 required for the suction piece to suck high-temperature air is indirectly changed, that is, the power ratio of the heat dissipation of the fuselage and the heat dissipation of the door panel is changed by adjusting the position of the partition, until the heat dissipation effect of the fuselage and the heat dissipation effect of the door panel are in an acceptable relatively balanced state when ΔQ is less than or equal to the preset temperature difference, and the power of the suction piece can be effectively utilized to reduce power waste.

[0028] In some embodiments, controlling the partition to move within the volute and changing the volume ratio of the first chamber to the second chamber includes:

[0029] If the cooking cavity temperature Q2 is greater than the cooking cavity temperature Q1, the partition is controlled to move in the volute to reduce the volume ratio of the first cavity to the second cavity;

[0030] If the cooking cavity temperature Q2 is less than the cooking cavity temperature Q1, the partition is controlled to move in the volute to increase the volume ratio of the first cavity to the second cavity.

[0031] With such arrangement, the change in the volume ratio of the first chamber and the second chamber is adapted to the required ratio of suction power of low-temperature air to high-temperature air. Reducing the volume ratio of the first chamber and the second chamber can make the suction piece power more used to suck high-temperature air, thereby improving the heat dissipation efficiency of the door panel. Increasing the volume ratio of the first chamber and the second chamber can make the suction piece power more used to suck low-temperature air, thereby improving the heat dissipation efficiency of the fuselage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A first top view of a cooking device according to an embodiment of the present invention;

[0033] Figure 2 A second top view of a cooking device according to an embodiment of the present invention;

[0034] Figure 3 for Figure 1 A cross-sectional view of the cooking device shown along plane AA;

[0035] Figure 4 for Figure 3 An enlarged view of a partial structure of the cooking device shown;

[0036] Figure 5 for Figure 2 A cross-sectional view of the cooking device shown along plane BB;

[0037] Figure 6 An exploded view of a cooking device according to an embodiment of the present invention;

[0038] Figure 7 A partial structural schematic diagram of a cooking device according to an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of the structure of an exhaust assembly of a cooking device according to an embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of the structure of an exhaust assembly of a cooking device according to an embodiment of the present invention;

[0041] Fig.10 A partial structural top view of a cooking device according to an embodiment of the present invention;

[0042] Fig.11 for Fig.10 A cross-sectional view of the cooking device shown along the CC plane;

[0043] Fig.12 for Fig.11 The cooking device shown is a partial enlarged schematic diagram at S.

[0044] Explanation of reference numerals: 10, fuselage; 11, gallbladder cavity; 111, gallbladder cavity top wall; 112, gallbladder cavity side wall; 113, gallbladder cavity bottom wall; 114, gallbladder cavity rear shell; 12, vent; 13, exhaust port; 20, exhaust assembly; 21, heat exhaust component; 211, volute; 2111, first cavity; 2112, second cavity; 212, partition; 213, heat exhaust cylinder; 2131, heat exhaust channel; 22, suction component; 221, first wind wheel; 2211, second An air inlet end; 2212, a first peripheral side; 222, a second wind wheel; 2221, a second air inlet end; 2222, a second peripheral side; 23, a suction flat cover; 231, a suction air duct; 232, a suction slit; 24, an exhaust drive member; 30, an inner pot; 31, a cooking cavity; 32, a cooling air duct; 33, an accumulation air duct; 34, an inner pot top wall; 35, an inner pot side wall; 36, an inner pot bottom wall; 37, an inner pot rear cover; 38, an inlet end; 40, a door panel; 41, a heat extraction gap. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0047] The present invention provides a cooking device. The specific type of the cooking device of the present invention is not limited. Figure 1 and Figure 3 , Figure 2 , Figure 5 and Figure 6 The cooking device may be an oven stove as shown in the figure, or may be a baking oven or a steam oven in other embodiments. The following description of the cooking device is based on the oven stove, and other types of cooking devices are not described in detail. It is worth noting that the cooking device of the present invention may have a high-temperature self-cleaning function.

[0048] The cooking device includes a hollow body 10, a heating component (not numbered in the figure) for generating hot air flow required for heating food, an exhaust component 20 for eliminating residual heat after cooking, an inner pot 30 for providing a place for placing food so that the food can be heated and cooked, and a door panel 40 for opening and closing the inner pot 30. The exhaust component 20 is installed on the body 10, the inner pot 30 is placed inside the body 10, the door panel 40 is movably connected to the body 10 to open and close the inner pot 30, and the heating component blows the generated hot air flow into the inner pot 30 after it is started. The exhaust component 20 can not only suck low-temperature air from the outside of the body 10 to help the body 10 dissipate heat so that the body 10 is cooled, but also suck high-temperature air from the inner pot 30 and eliminate the residual heat in the inner pot 30 to help the door panel 40 dissipate heat so that the door panel 40 is cooled. After the body 10 and the door panel 40 are cooled, it is convenient for users to wipe and clean them, and users will not be burned by residual heat.

[0049] For cooking equipment with a high-temperature self-cleaning function, when the high-temperature self-cleaning function is running, the heating component can generate high-temperature air to kill bacteria inside the inner pot 30. Compared with the high-temperature air generated by the heating component during the conventional cooking function, the high-temperature air generated by the heating component during the high-temperature self-cleaning function has a higher temperature. The latter can reach 430°C, and the former is usually within 100°C to 200°C.

[0050] For the convenience of description, the low-temperature air sucked from the outside of the fuselage 10 by the exhaust component 20 to help the fuselage 10 dissipate heat is referred to as low-temperature air, and the high-temperature air sucked from the inner tank 30 by the exhaust component 20 is referred to as high-temperature air. It can be understood that low-temperature air is room temperature air, that is, the internal environment air of the kitchen located outside the fuselage 10, and high-temperature air is the high-temperature air generated by the heating component and remaining in the inner tank 30 after cooking or high-temperature self-cleaning. The temperature of low-temperature air is significantly lower than that of high-temperature air.

[0051] The body 10 is a hollow rectangular parallelepiped structure, including a gallbladder cavity top wall 111 and a gallbladder cavity bottom wall 113 that are spaced apart and facing each other in the vertical direction, two gallbladder cavity side walls 112 that are spaced apart and facing each other in the horizontal direction, and a gallbladder cavity rear shell 114 that connects the gallbladder cavity top wall 111, the gallbladder cavity bottom wall 113, and the two gallbladder cavity side walls 112. The gallbladder cavity top wall 111, the gallbladder cavity bottom wall 113, the two gallbladder cavity side walls 112, and the gallbladder cavity rear shell 114 surround a gallbladder cavity 11, and the gallbladder cavity 11 is used to accommodate an inner gallbladder 30. The body 10 surrounds the inner gallbladder 30 through the gallbladder cavity 11 to prevent the user from accidentally touching the inner gallbladder 30 and being scalded. The opening of the gallbladder cavity 11 faces away from the gallbladder cavity rear shell 114. The body 10 is also provided with a vent 12 that connects the gallbladder cavity 11 and the outside of the body 10. Figure 3 , Figure 5-6 As shown, optionally, the vent 12 is opened at the bottom of the body 10, and the bottom of the body 10 includes a gallbladder cavity bottom wall 113, and also includes a gallbladder cavity side wall 112 and a gallbladder cavity rear shell 114 that is relatively close to the gallbladder cavity bottom wall 113.

[0052] The inner pot 30 is a hollow rectangular parallelepiped structure, including an inner pot top wall 34 and an inner pot bottom wall 36 arranged in a vertical direction, two inner pot side walls 35 arranged in a horizontal direction, and an inner pot back cover 37 connecting the inner pot top wall 34, the inner pot bottom wall 36 and the two inner pot side walls 35. The inner pot top wall 34, the inner pot bottom wall 36, the two inner pot side walls 35 and the inner pot back cover 37 surround and form a cooking cavity 31, which is used to place food and serve as a place for food to be heated and cooked. There is a space between the outer wall of the inner pot 30 and the inner wall of the pot cavity 11, which is connected to the vent 12.

[0053] Optionally, a flange is provided at the opening edge of the vent 12, and the flange protrudes and extends toward the inner side of the fuselage 10. The setting of the flange can prevent the low-temperature air that has been sucked into the gallbladder cavity 11 from flowing back.

[0054] like Figure 3 , Figure 5 , Figure 7 and Fig.11As shown, the inner pot top wall 34 is spaced and adjacent to the pot cavity top wall 111, the inner pot bottom wall 36 is spaced and adjacent to the pot cavity bottom wall 113, the two inner pot side walls 35 are spaced and adjacent to the two pot cavity side walls 112 respectively, the inner pot rear cover 37 is spaced and adjacent to the pot cavity rear shell 114, the inner pot 30 forms an inlet end 38 at one end relatively far from the pot cavity rear shell 114, the cooking cavity 31 penetrates the inlet end 38 to form a cooking cavity opening for food to enter and leave the cooking cavity 31, and the door panel 40 is rotatably connected to the pot cavity side wall 112 to open or close the cooking cavity opening. When the cooking cavity opening is closed by the door panel 40, the inner side of the door panel 40 and the inner wall of the inner pot 30 together form the inner wall of the cooking cavity 31, and at this time, the inner side of the door panel 40 and the inner pot rear cover 37 are spaced and arranged facing each other. In other embodiments, the door panel 40 can also be rotatably connected to the pot cavity side wall 112 or the pot cavity bottom wall 113.

[0055] Further, see Figure 3 to Figure 12 The exhaust assembly 20 is located outside the inner liner 30 and installed on the fuselage 10, including a heat exhaust component 21, a suction component 22 and an exhaust drive component 24. The heat exhaust component 21 has a heat exhaust channel 2131 connected to the outside of the fuselage 10. The suction component 22 is used to suck low-temperature air from outside the fuselage 10 to cool the fuselage 10, and to suck high-temperature air from the inner liner 30 to eliminate residual heat in the inner liner 30 and cool the door panel 40. The exhaust drive component 24 is connected to the suction component 22 and is used to provide the suction component 22 with the power required to suck low-temperature air and high-temperature air. The suction piece 22 includes a first air inlet end 2211, a second air inlet end 2221 and an air outlet side. The first air inlet end 2211 is used for low-temperature air to enter the suction piece 22, and the second air inlet end 2221 is used for high-temperature air to enter the suction piece 22. The air outlet side is connected to the heat exhaust channel 2131. The low-temperature air and high-temperature air sucked by the suction piece 22 are all sent into the heat exhaust channel 2131 through the air outlet side and are finally discharged to the outside of the fuselage 10 by the heat exhaust piece 21.

[0056] Specifically, see Figure 3 and Figure 5The space between the inner wall of the gallbladder cavity 11 and the outer wall of the inner liner 30 forms a cooling air duct 32, which is connected to the vent 12 and the first air inlet end 2211. When the suction member 22 is in operation, the low-temperature air outside the body 10 is first sucked into the gallbladder cavity 11 from the vent 12, and then flows into the first air inlet end 2211 along the cooling air duct 32, and then is blown into the heat exhaust channel 2131 by the suction member 22 through the air outlet side and finally discharged. The heat element 21 is discharged to the outside of the machine body 10; a suction duct 231 is formed between the door panel 40 and the second air inlet end 2221. The high-temperature air in the cooking cavity 31 is accelerated when the suction element 22 is in operation, and then flows through the inner side of the door panel 40 and turns to enter the suction duct 231. Then the high-temperature air flows along the suction duct 231 into the second air inlet end 2221, and finally is blown into the heat exhaust channel 2131 by the suction element 22 through the air outlet side until it is discharged to the outside of the machine body 10. The low-temperature air flows along the cooling duct 32 and absorbs the heat of the machine body 10 in the form of convection heat transfer. After the high-temperature air is extracted, the residual heat in the cooking cavity 31 is reduced, thereby helping to accelerate the cooling of the door panel 40. When the high-temperature air flows through the inner side of the door panel 40, the door panel 40 can also be cooled in the form of convection heat transfer.

[0057] In some embodiments, the exhaust assembly 20 is disposed in the chamber 11 of the housing 10. Figure 3 , Figure 5 and Figure 7 The exhaust assembly 20 is located between the top wall 34 of the inner pot and the top wall 111 of the pot cavity. The top wall 111 of the pot cavity is also provided with an exhaust port 13 connected to the outside of the body 10. The heat exhaust component 21 is connected to the top wall 111 of the pot cavity. The heat exhaust channel 2131 extends to the top wall 111 of the pot cavity and is connected to the exhaust port 13. The cooking device also includes an oil fume suction device (not shown) disposed above the body 10. Both low-temperature air and high-temperature air are exhausted through the exhaust port 13 and then absorbed by the oil fume suction device. Of course, in other embodiments, the cooking device may not include an oil fume suction device disposed above the body 10.

[0058] Specifically, Figure 3 , Figure 5As shown, the heat exhaust component 21, the suction component 22 and the exhaust driving component 24 are all arranged between the top wall 111 of the gallbladder cavity and the top wall 34 of the inner liner. The suction component 22 includes a first wind wheel 221 and a second wind wheel 222. The first wind wheel 221 and the second wind wheel 222 can be centrifugal wind wheels. The ends and the peripheral sides of the centrifugal wind wheels are respectively used for air intake and air outlet. The first air inlet end 2211 and the second air inlet end 2221 are respectively arranged at the end of the first wind wheel 221 and the end of the second wind wheel 222. The air outlet side includes the peripheral side of the first wind wheel 221 and the peripheral side of the second wind wheel 222. The peripheral sides of the first wind wheel 221 and the second wind wheel 222 are both connected to the heat exhaust channel 2131. The exhaust driving component 24 connects the first wind wheel 221 and the second wind wheel 222, and can drive the first wind wheel 221 and the second wind wheel 222 to rotate simultaneously.

[0059] In this arrangement, the first wind wheel 221 is dedicated to sucking low-temperature air from the outside of the fuselage 10 and flowing through the cooling air duct 32, and the second wind wheel 222 is dedicated to sucking residual high-temperature air from the cooking cavity 31 and flowing through the suction air duct 231. The low-temperature air and the high-temperature air enter the suction member 22 from different air inlet ends respectively, and leave the suction member 22 from different air outlet sides respectively, ensuring that both airflows can be discharged into the heat exhaust channel 2131 with sufficient kinetic energy, so as to make the hot air extraction process inside the cooking equipment smoother.

[0060] Alternatively, if Figure 4 , Figure 8-Figure 9 , Figure 11-12 As shown, the structures of the first wind wheel 221 and the second wind wheel 222 are basically the same. The first wind wheel 221 and the second wind wheel 222 are both conventional centrifugal wind wheels of existing centrifugal fans. The interior of the centrifugal wind wheel is connected with the outer peripheral side of the centrifugal wind wheel through the blade gap located on the peripheral side of the centrifugal wind wheel, and the end of the centrifugal wind wheel serves as an air inlet end connected to the interior of the centrifugal wind wheel. The first wind wheel 221 and the second wind wheel 222 are arranged in sequence along the vertical direction and are coaxially fixedly connected. The first air inlet end 2211 is formed at an end of the first wind wheel 221 that is relatively far away from the second wind wheel 222, and the second air inlet end 2221 is formed at an end of the second wind wheel 222 that is relatively far away from the first wind wheel 221, that is, the end of the suction piece 22 that is relatively close to the top wall 111 of the gallbladder cavity is the first air inlet end 2211, and the end of the suction piece 22 that is relatively close to the inner pot top wall 34 is the second air inlet end 2221. The suction duct 231 is located on the side of the inner pot top wall 34 that is away from the cooking cavity 31 and close to the gallbladder cavity top wall 111, and the suction duct 231 extends along the inner pot top wall 34 to the door panel 40 and the second air inlet end 2221.

[0061] In this way, the first air inlet end 2211 and the second air inlet end 2221 are respectively two ends of the suction piece 22 that are axially opposite to each other. Low-temperature air is sucked into the first wind wheel 221 through the first air inlet end 2211, and then blown into the heat exhaust channel 2131 through the air outlet side. High-temperature air is sucked into the second wind wheel 222 through the second air inlet end 2221, and then blown into the heat exhaust channel 2131 through the air outlet side. The airflow trajectories of the low-temperature air and the high-temperature air entering the suction piece 22 respectively will not cross or merge, so the two airflows do not interfere with each other, which can prevent the two airflows from generating turbulence due to mutual interference, thereby impacting the suction piece 22 and causing noise, thereby ensuring that the suction piece 22 operates smoothly and with low noise.

[0062] Further, see Figure 4 , Figure 6 to Figure 12 The exhaust assembly 20 further includes a suction flat cover 23 installed on the side of the top wall 34 of the inner pot near the top wall 111 of the pot cavity. The interior of the suction flat cover 23 is hollow and formed with a suction air duct 231. The suction member 22 is rotatably arranged relative to the suction flat cover 23, and the heat exhaust member 21 is fixedly connected to the suction flat cover 23. The suction flat cover 23 is provided with an opening adapted to the second air inlet end 2221 so that the suction air duct 231 is connected to the second air inlet end 2221. The suction air duct 231 penetrates the end of the suction flat cover 23 relatively close to the door panel 40 to form a suction slit 232. The suction slit 232 extends along the edge of the cooking cavity opening, and specifically can extend along the edge of the top wall 34 of the inner pot relatively close to the door panel 40.

[0063] With such arrangement, when the suction piece 22 is in operation, the remaining high-temperature air in the cooking cavity 31 is accelerated to flow toward the inner side of the door panel 40, and then floats upward along the inner side of the door panel 40 to be sucked into the suction duct 231 through the suction slit 232. When the high-temperature air flows through the inner side of the door panel 40, it is in full contact with the door panel 40, thereby increasing the convection heat transfer area between the high-temperature air and the inner side of the door panel 40, that is, the area of ​​the inner side of the door panel 40 swept by the high-temperature air is larger, the heat dissipation effect of the door panel 40 is further improved, and the high-temperature air in the cooking cavity 31 can be sucked away faster.

[0064] Further, see Figure 5 When the door panel 40 closes the cooking cavity opening and the cooking cavity 31 is closed by the inner side of the door panel 40 and the inner wall of the inner pot 30, a heat extraction gap 41 is formed between the inner side of the door panel 40 and the inlet end 38, and the heat extraction gap 41 connects the suction slit 232 of the suction duct 231 and the cooking cavity 31. In this way, the residual high-temperature air floating up along the inner side of the door panel 40 leaves the cooking cavity 31 through the heat extraction gap 41, and then changes its flow direction to flow in the suction duct 231 along the top wall 34 of the inner pot. It can not only realize that the suction member 22 effectively extracts the residual high-temperature air in the cooking cavity 31, but also prevent the high-temperature air from overflowing in a direction away from the opening end and the door panel 40 to cause burns to the user.

[0065] Further, see Figure 3 and Figure 5 The first wind wheel 221 is one of the two coaxially arranged wind wheels constituting the suction member 22, which is relatively close to the top wall 111 of the gallbladder cavity. The first air inlet end 2211 faces the side of the gallbladder cavity top wall 111 facing the inner liner top wall 34 and is arranged at a distance, so that the first air inlet end 2211 and the gallbladder cavity top wall 111 form an accumulation air duct 33 connected to the cooling air duct 32. One end of the cooling air duct 32 close to the ground is connected to the vent 12, and the other end is connected to the accumulation air duct 33. Figure 3 As shown, a cooling air duct 32 is formed between the side wall 112 of the gallbladder cavity and the side wall 35 of the inner liner. After the low-temperature air outside the fuselage 10 enters the gallbladder cavity 11 through the vent 12, it first flows vertically upward along the side wall 112 of the gallbladder cavity and / or the rear shell 114 of the gallbladder cavity in the cooling air duct 32, then turns and flows horizontally along the top wall 111 of the gallbladder cavity in the accumulation air duct 33, and then is sucked into the first air inlet end 2211. The first air inlet end 2211 is connected to the accumulation air duct 33, and the low-temperature air can be quickly sucked into the first air inlet end 2211 after reaching the accumulation air duct 33. The flow path of the low-temperature air is Figure 3 It is indicated by the broken line arrow F.

[0066] With such arrangement, the low-temperature air continuously absorbs the heat of the fuselage 10 while flowing along the cooling air duct 32, that is, the flow is accompanied by a rise in temperature and a decrease in density. Therefore, the low-temperature air can spontaneously float upward to the accumulation air duct 33, thereby reducing the energy consumption required by the suction member 22 to draw the low-temperature air to the first air inlet end 2211.

[0067] Optionally, the vent 12 is provided at the bottom of the body 10, the bottom of the body 10 includes the gallbladder cavity bottom wall 113, and also includes the gallbladder cavity side wall 112 and the gallbladder cavity rear shell 114 relatively close to the gallbladder cavity bottom wall 113, the cooling air duct 32 extends in the vertical direction and passes through the bottom of the inner liner 30, the bottom of the inner liner 30 includes the inner liner bottom wall 36, and also includes the inner liner side wall 35 and the inner liner rear cover 37 relatively close to the inner liner bottom wall 36. It can be understood that the greater the vertical distance from the vent 12 to the gallbladder cavity top wall 111, the greater the length of the cooling air duct 32 in the vertical direction, and thus the longer the low-temperature air flow path, the more heat the low-temperature air absorbs from the body 10, and the better the heat dissipation and cooling effect on the body 10.

[0068] Further, see Figure 4-5 , Figure 7 and Fig.10The heat exhaust member 21 includes a partition 212, a volute 211 and a heat exhaust tube 213. At least a portion of the partition 212 is disposed in the volute 211 and divides the inner cavity of the volute 211 into a first cavity 2111 and a second cavity 2112. The volute 211 is fixedly mounted on the suction flat cover 23 to accommodate the suction member 22 composed of a first wind wheel 221 and a second wind wheel 222. The heat exhaust tube 213 is connected to the air outlet of the volute 211 and the top wall 111 of the gallbladder cavity. The channel 2131 is formed in the heat exhaust tube 213, one end of the heat exhaust channel 2131 is connected to the first cavity 2111 and the second cavity 2112, and the other end is connected to the exhaust port 13 and thus to the outside of the fuselage 10. The first wind wheel 221 and the second wind wheel 222 are respectively located in the first cavity 2111 and the second cavity 2112. The partition 212 divides the air outlet side into a first peripheral side 2212 located in the first cavity 2111 and a second peripheral side 2222 located in the second cavity 2112.

[0069] Optionally, see Figure 8-Figure 9 , Figure 11-12 , the partition 212 is a flat plate perpendicular to the axis of the first wind wheel 221 and the second wind wheel 222. The plane where the partition 212 is located cuts off the wind outlet side, the first peripheral side 2212 and the second peripheral side 2222 are respectively located on both sides of the plane where the partition 212 is located, the volute 211 is provided with a first opening on the side facing the gallbladder cavity top wall 111 to connect the first cavity 2111 and the accumulation air duct 33, and the volute 211 is provided with a second opening on the side facing the inner liner top wall 34 to connect the second cavity 2112 and the suction air duct 231. The low-temperature air in the accumulation air duct 33 enters the first air inlet end 2211 through the first opening, then passes through the first cavity 2111 and is blown away from the first wind wheel 221 from the first peripheral side 2212, and the high-temperature air in the suction air duct 231 enters the second air inlet end 2221 through the second opening, then passes through the second cavity 2112 and is blown away from the second wind wheel 222 from the second peripheral side 2222. The low-temperature air and the high-temperature air respectively leave the first wind wheel 221 and the second wind wheel 222 and merge in the heat exhaust tube 213 , and are finally discharged along the heat exhaust channel 2131 .

[0070] With such a configuration, the partition 212 can block the low-temperature air and high-temperature air from entering the suction member 22, so that the first wind wheel 221 and the second wind wheel 222 can rotate simultaneously but can respectively and relatively independently draw the low-temperature air and the high-temperature air, thereby avoiding mutual disturbance between the low-temperature air and the high-temperature air in the suction member 22, ensuring that the low-temperature air and the high-temperature air flow out of the suction member 22 from the first peripheral side 2212 and the second peripheral side 2222 respectively with sufficient kinetic energy, and further ensuring that the low-temperature air and the high-temperature air still have sufficient flow rate after entering the heat exhaust channel 2131 so as to be smoothly discharged outside the fuselage 10.

[0071] Optionally, the side of the volute 211 facing the top wall 111 of the gallbladder cavity also includes a flange, which is arranged at the opening edge of the first opening and extends toward the interior of the volute 211 in a direction away from the top wall 111 of the gallbladder cavity. The setting of the flange can prevent the backflow of low-temperature air entering the first air inlet end 2211 from the accumulation air duct 33.

[0072] Further, see Figure 4 , Figure 7 to Figure 9 , Figure 11-12 , the exhaust drive member 24 may be an exhaust drive motor connected to the first wind wheel 221 and the second wind wheel 222 for coaxial rotation. The exhaust drive member 24 is connected to the suction member 22 at the first air inlet end 2211, that is, the exhaust drive member 24 is arranged at an end of the first wind wheel 221 that is relatively close to the gallbladder cavity top wall 111 and relatively far away from the second wind wheel 222. Therefore, the exhaust drive member 24 inevitably blocks the first air inlet end 2211 to a certain extent. The total area of ​​the first air inlet end 2211 minus the area of ​​the first air inlet end 2211 blocked by the exhaust drive member 24 is the effective air inlet area of ​​the first air inlet end 2211. The ratio of the effective air inlet area of ​​the first air inlet end 2211 to the effective air inlet area of ​​the second air inlet end 2221 is recorded as A. Since the second air inlet end 2221 is not blocked, the total area of ​​the second air inlet end 2221 is the effective air inlet area of ​​the second air inlet end 2221. Optionally, A=3 / 7.

[0073] The exhaust drive 24 is arranged at the end of the wind wheel to drive the wind wheel, which is a common solution for driving the centrifugal wind wheel to rotate. Therefore, the exhaust drive 24 inevitably blocks the end of the wind wheel. In this embodiment, the exhaust drive 24 is arranged at the first air inlet end 2211 to maximize the heat dissipation and cooling effect of the cooking device. Since more heat accumulates inside the cooking cavity 31, the heat dissipation and cooling requirements of the door panel 40 are greater than those of the body 10. When the cooking device has a high-temperature self-cleaning function, it is more important and urgent to dissipate heat and cool the door panel 40. The exhaust drive 24 is arranged at the first air inlet end 2211 instead of the second air inlet end 2221, which ensures that the priority of the second wind wheel 222 to draw high-temperature air from the cooking cavity 31 is higher than the priority of the first wind wheel 221 to draw low-temperature air from the cooling air duct 32, and the exhaust drive 24 will not interfere with the high-temperature air entering the second air inlet end 2221.

[0074] Optionally, the cooking device also includes a control unit, a first temperature measuring component and a second temperature measuring component, the partition 212 is connected to the control unit, the first temperature measuring component and the second temperature measuring component are respectively used to monitor the temperature of the gallbladder cavity 11 and the temperature of the cooking cavity 31, the gallbladder cavity temperature and the cooking cavity temperature are respectively denoted as Q1 and Q2, the control unit can control the partition 212 to move relative to the volute 211 according to the change in the size relationship between the gallbladder cavity temperature Q1 and the cooking cavity temperature Q2, thereby changing the volume ratio of the first cavity 2111 and the second cavity 2112, the air outlet area of ​​the first peripheral side 2212 and the air outlet area of ​​the second peripheral side 2222 change with the movement of the partition 212, the ratio of the volume of the first cavity 2111 to the volume of the second cavity 2112 is denoted as B, the ratio of the air outlet area of ​​the first peripheral side 2212 to the air outlet area of ​​the second peripheral side 2222 is denoted as C, and B is proportional to C.

[0075] Optionally, the first temperature measuring element and the second temperature measuring element may be respectively arranged in the first cavity 2111 and the second cavity 2112, or may be respectively arranged at the intersection of the heat exhaust passage 2131 and the first cavity 2111 and at the intersection of the heat exhaust passage 2131 and the second cavity 2112. In such an arrangement, the first temperature measuring element measures the temperature of the low-temperature air and uses the temperature of the low-temperature air as the temperature of the gallbladder cavity, and the second temperature measuring element measures the temperature of the high-temperature air and uses the temperature of the high-temperature air as the temperature of the cooking cavity. It is not necessary to directly place the first temperature measuring element and the second temperature measuring element in the gallbladder cavity 11 and the cooking cavity 31, respectively, so as to prevent the first temperature measuring element and the second temperature measuring element from being heated for a long time and thus shortening the service life.

[0076] In one embodiment, the exhaust assembly 20 has at least a normal exhaust state and a self-cleaning exhaust state. The normal exhaust state refers to the working state in which the exhaust assembly 20 extracts low-temperature air and high-temperature air to help the body 10 and the inner pot 30 dissipate heat after the cooking device finishes cooking food. The self-cleaning exhaust state refers to the working state in which the exhaust assembly 20 extracts low-temperature air and high-temperature air to help the body 10 and the inner pot 30 dissipate heat after the cooking device completes high-temperature self-cleaning. The temperature in the cooking cavity 31 is in the range of 100°C to 200°C when cooking food. When the high-temperature self-cleaning function is running, more hot air is generated in the cooking cavity 31, and it can reach 430°C during high-temperature self-cleaning. When the exhaust assembly 20 is in the normal exhaust state, the partition 212 moves under the control of the control unit to make A=B. When the exhaust assembly 20 is in the self-cleaning exhaust state, the partition 212 moves under the control of the control unit to make A>B.

[0077] With such arrangement, the partition 212 moves in the volute 211 and changes the volume ratio of the first cavity 2111 and the second cavity 2112, which can better meet the heat dissipation and cooling requirements of the cooking device after various use conditions. After cooking is completed, the temperature of the pot cavity is basically close to the temperature of the cooking cavity. By making A=B through the partition 212, low-temperature air and high-temperature air can be sucked into the suction member 22 at an approximate rate, and then the low-temperature air and the high-temperature air are blown into the heat exhaust channel 2131 from the first peripheral side 2212 and the second peripheral side 2222 at an approximate rate respectively and smoothly merge in the heat exhaust channel 2131, and finally the cooking device is cooled in the shortest time, and the heat dissipation effect of the body is balanced with the heat dissipation effect of the inner pot; after the high-temperature self-cleaning is completed, the temperature of the cooking cavity is significantly higher than that of the pot cavity. The cavity temperature, the urgency of heat dissipation for the inner pot is higher than the urgency of heat dissipation for the body, through the partition 212, A>B, A is a constant, A>B is equivalent to reducing B, that is, increasing the volume of the second cavity 2112 and reducing the volume of the first cavity 2111, the amount of high-temperature air sucked by the suction member 22 is increased, and the power of the suction member 22 can be used more to suck high-temperature air, thereby increasing the priority of heat dissipation and cooling of the door panel 40 and the cooking cavity 31, helping the inner pot 30 to cool down faster, and finally making the temperature of the pot cavity and the temperature of the cooking cavity reach a relative balance faster.

[0078] Optionally, the partition 212 includes a first partition plate and a second partition plate. Figure 8-Figure 9 The marked partition 212 is a first partition plate, which is located at the outer peripheral side of the coaxially connected first wind wheel 221 and the second wind wheel 222, and separates the area of ​​the volute 211 cavity outside the suction member 22, and the second partition plate is located inside the suction member 22 and divides the space inside the suction member 22 into two parts. Specifically, the second partition plate is located in a hollow columnar area formed by connecting the hollow area of ​​the first wind wheel 221 and the hollow area of ​​the second wind wheel 222, and divides the hollow columnar area into two parts. The first partition plate and the second partition plate are at the same height position in the axial direction of the suction piece 22 and are relatively fixed therebetween. The control unit can synchronously drive the first partition plate and the second partition plate to move along the axial direction of the first wind wheel 221 and the second wind wheel 222. The first partition plate can prevent the low-temperature air and the high-temperature air leaving the first wind wheel 221 and the second wind wheel 222 respectively from interfering with each other in the volute 211, until the low-temperature air and the high-temperature air enter the heat exhaust channel 2131 from both sides of the first partition plate respectively and merge in the heat exhaust channel 2131. The second partition plate can prevent the low-temperature air and the high-temperature air entering the suction piece 22 from interfering with each other.

[0079] The present invention also provides a heat extraction method based on a cooking device. The cooking device implementing the method further includes a control unit, a first temperature measuring element and a second temperature measuring element. The method includes the following steps:

[0080] S10, driving the suction member 22 to rotate, so that the suction member 22 draws air from the cooling air duct 32 through the first air inlet end 2211, and draws air from the suction air duct 231 through the second air inlet end 2221;

[0081] S20, blowing the air drawn from the first air inlet end 2211 into the heat exhaust channel 2131 through the first peripheral side 2212, and blowing the air drawn from the second air inlet end 2221 into the heat exhaust channel 2131 through the second peripheral side 2222;

[0082] S30, monitoring the temperature Q1 of the cooking cavity and the temperature Q2 of the cooking cavity and obtaining ΔQ, ΔQ=|Q1-Q2|;

[0083] ΔQ is the absolute value of the difference between the temperature of the cooking cavity Q1 and the temperature of the cooking cavity Q2. The preset temperature difference value can be determined manually. If ΔQ is greater than the preset temperature difference, the partition 212 is controlled to move and change the volume ratio of the first cavity 2111 to the second cavity 2112 until ΔQ is less than or equal to the preset temperature difference.

[0084] Since the cooking cavity 31 is the place where food is heated and cooked, the high-temperature air generated by the heating component and the high-temperature air generated by the cooking equipment under high-temperature self-cleaning conditions are all in the cooking cavity 31. Therefore, in most cases, the cavity temperature Q1 is less than the cooking cavity temperature Q2, and only in a few cases, the cavity temperature Q1 is greater than the cooking cavity temperature Q2.

[0085] The heat extraction method of the present invention can simultaneously achieve heat dissipation for the fuselage 10 and the door panel 40, and the heat dissipation effect of the fuselage 10 and the heat dissipation effect of the door panel 40 can be guaranteed. The relationship between ΔQ and the preset temperature difference is used to determine whether the heat dissipation effect of the fuselage 10 and the heat dissipation effect of the door panel 40 are balanced. When ΔQ is greater than the preset temperature difference, it can be considered that the heat dissipation effect of the fuselage 10 and the heat dissipation effect of the door panel 40 are unbalanced. By changing the volume ratio of the first cavity 2111 and the second cavity 2112, the ratio of the power P1 required for the suction member 22 to suck low-temperature air and the power P2 required for the suction member 22 to suck high-temperature air is indirectly changed, that is, the power ratio of the heat dissipation of the fuselage 10 and the heat dissipation of the door panel 40 is changed by adjusting the position of the partition 212, until the heat dissipation effect of the fuselage 10 and the heat dissipation effect of the door panel 40 are in an acceptable relatively balanced state when ΔQ is less than or equal to the preset temperature difference, and the power of the suction member 22 can be effectively utilized to reduce power waste.

[0086] Wherein, step S30 includes the following steps:

[0087] S31, if the cooking cavity temperature Q2 is greater than the cooking cavity temperature Q1, controlling the partition 212 to move in the volute 211 to reduce the volume ratio of the first cavity 2111 to the second cavity 2112;

[0088] S32: If the cooking cavity temperature Q2 is less than the cooking cavity temperature Q1, the partition 212 is controlled to move in the volute 211 to increase the volume ratio of the first cavity 2111 to the second cavity 2112.

[0089] When the cooking cavity temperature Q2 is greater than the cooking cavity temperature Q1, it indicates that the heat dissipation effect of the cooking cavity 31 is insufficient, and the speed at which the suction member 22 sucks high-temperature air from the cooking cavity 31 is low. Therefore, by reducing the volume ratio of the first cavity 2111 to the second cavity 2112, the ratio of the volume of the second cavity 2112 to the total volume of the volute 211 cavity is increased, thereby increasing the amount and speed of high-temperature air sucked from the cooking cavity 31 by the suction member 22, so as to improve the heat dissipation effect of the cooking cavity 31 and the door panel 40.

[0090] When the cooking cavity temperature Q2 is less than the pot cavity temperature Q1, it indicates that the heat dissipation effect of the pot cavity 11 is insufficient, and the speed at which the suction member 22 draws low-temperature air from the cooling air duct 32 is low. Therefore, by increasing the volume ratio of the first cavity 2111 to the second cavity 2112, the ratio of the volume of the first cavity 2111 to the total volume of the volute 211 cavity is increased, thereby increasing the extraction amount and suction speed of low-temperature air drawn from the cooling air duct 32 by the suction member 22, so as to enhance the heat dissipation effect of the pot cavity 11 and the body 10.

[0091] With such arrangement, the change in the volume ratio of the first cavity 2111 and the second cavity 2112 is adapted to the required ratio of suction power of low-temperature air to high-temperature air. By reducing the volume ratio of the first cavity 2111 and the second cavity 2112, the power of the suction member 22 can be more used to suck high-temperature air, thereby improving the heat dissipation efficiency of the cooking cavity 31 and the door panel 40. By increasing the volume ratio of the first cavity 2111 and the second cavity 2112, the power of the suction member 22 can be more used to suck low-temperature air, thereby improving the heat dissipation efficiency of the fuselage 10.

[0092] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0093] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A cooking device, characterized in that: include A body (10) having a bile-carrying cavity (11) and a vent (12), wherein the vent (12) is connected to the bile-carrying cavity (11) and penetrates the outer side of the body (10); An exhaust assembly (20) comprises a heat exhaust component (21) having a heat exhaust channel (2131) and a suction component (22) arranged on the heat exhaust component (21), wherein the suction component (22) comprises a first air inlet end (2211), a second air inlet end (2221) and an air outlet side connected to the heat exhaust channel (2131); An inner pot (30) is arranged in the pot cavity (11) and has a cooking cavity (31), wherein a cooling air duct (32) communicating with the first air inlet end (2211) is formed between the inner wall of the pot cavity (11) and the outer wall of the inner pot (30); A door panel (40) is connected to the machine body (10) for opening and closing the cooking cavity (31), and a suction air duct (231) is formed between the door panel (40) and the second air inlet end (2221).

2. The cooking device according to claim 1, characterized in that The suction piece (22) is arranged between the inner pot top wall (34) and the pot cavity top wall (111); the second air inlet end (2221) is an end of the suction piece (22) relatively close to the inner pot top wall (34); the suction air duct (231) is located on a side of the inner pot top wall (34) facing away from the cooking cavity (31) and extends along the inner pot top wall (34) toward the door panel (40).

3. The cooking device according to claim 2, characterized in that The inner pot (30) includes an inlet end (38) having an opening for a cooking cavity (31), a heat extraction gap (41) is formed between the door panel (40) and the inlet end (38), and the heat extraction gap (41) connects the suction air duct (231) and the cooking cavity (31).

4. The cooking device according to claim 2, characterized in that The exhaust assembly (20) further comprises a suction flat cover (23) disposed on the top wall (34) of the inner pot and connected to the heat exhaust component (21); the suction flat cover (23) is provided with the suction air duct (231); the suction air duct (231) passes through an end of the suction flat cover (23) relatively close to the door panel (40) and forms a suction slit (232) extending along the opening edge of the cooking cavity (31).

5. The cooking device according to claim 1, characterized in that The cooling air duct (32) is formed between the side wall (112) of the bile cavity and the side wall (35) of the inner liner, the suction piece (22) is arranged between the top wall (34) of the inner liner and the top wall (111) of the bile cavity, the first air inlet end (2211) is spaced apart from the top wall (111) of the bile cavity and forms an accumulation air duct (33), and the accumulation air duct (33) is connected to the cooling air duct (32).

6. The cooking device according to claim 5, characterized in that The vent (12) is opened at the bottom of the fuselage (10), the cooling air duct (32) extends vertically and passes through the bottom of the inner tank (30), and the accumulation air duct (33) and the vent (12) are respectively connected to the two ends of the cooling air duct (32).

7. The cooking device according to claim 1, characterized in that The heat exhaust component (21) comprises a partition (212) and a volute (211) accommodating the suction component (22); the inner cavity of the volute (211) is connected to the heat exhaust channel (2131) and is divided into a first cavity (2111) and a second cavity (2112) by the partition (212); the air outlet side comprises a first peripheral side (2212) located in the first cavity (2111) and a second peripheral side (2222) located in the second cavity (2112); the first peripheral side (2212) and the second peripheral side (2222) respectively blow airflows from the first air inlet end (2211) and the second air inlet end (2221) into the heat exhaust channel (2131).

8. The cooking device according to claim 7, characterized in that The suction member (22) comprises a first wind wheel (221) and a second wind wheel (222) which are coaxially connected, wherein the outer peripheral side of the first wind wheel (221) and the outer peripheral side of the second wind wheel (222) form the first peripheral side (2212) and the second peripheral side (2222), and the first air inlet end (2211) and the second air inlet end (2221) are respectively the air inlet end of the first wind wheel (221) and the air inlet end of the second wind wheel (222).

9. The cooking device according to claim 8, characterized in that The suction piece (22) is arranged between the top wall (34) of the inner liner and the top wall (111) of the liner cavity; the first air inlet end (2211) is formed at one end of the first wind wheel (221) facing away from the second wind wheel (222) and close to the top wall (111) of the liner cavity; the second air inlet end (2221) is formed at one end of the second wind wheel (222) facing away from the first wind wheel (221) and close to the top wall (34) of the inner liner.

10. The cooking device according to claim 7, characterized in that The partition (212) is controllably and movably disposed in the volute (211), and the volume ratio of the first chamber (2111) to the second chamber (2112) and the ratio of the air outlet area of ​​the first peripheral side (2212) to the second peripheral side (2222) both change as the partition (212) moves in a controlled manner.

11. The cooking device according to claim 10, characterized in that The cooking device further comprises a control unit, a first temperature measuring component and a second temperature measuring component, wherein the first temperature measuring component and the second temperature measuring component are used to measure the temperature of the gallbladder cavity (11) and the cooking cavity (31) respectively, and the control unit controls the movement of the partition (212) according to the temperature of the gallbladder cavity (11) and the temperature of the cooking cavity (31).

12. The cooking device according to claim 7, characterized in that The ratio of the effective air inlet area of ​​the first air inlet end (2211) to the effective air inlet area of ​​the second air inlet end (2221) is A, and the ratio of the volume of the first cavity (2111) to the volume of the second cavity (2112) is B; The extraction component (20) has at least a normal extraction state and a self-cleaning extraction state. When the extraction component (20) is in the normal extraction state, A=B; when the extraction component (20) is in the self-cleaning extraction state, A>B.

13. The cooking device according to claim 12, characterized in that The extraction assembly (20) further comprises an extraction drive component (24) for driving the suction member (22) to extract air from the suction air duct (231) and the cooling air duct (32); the extraction drive component (24) is connected to the suction member (22) at the first air inlet end (2211), and A=3 / 7.

14. A heat extraction method, the method being based on the cooking device according to claim 7, characterized in that: The method includes: Driving the suction member (22) to rotate, so that the suction member (22) draws air from the cooling air duct (32) through the first air inlet end (2211), and so that the suction member (22) draws air from the suction air duct (231) through the second air inlet end (2221); The air extracted from the first air inlet end (2211) and the air extracted from the second air inlet end (2221) are respectively blown into the heat exhaust channel (2131) through the first peripheral side (2212) and the second peripheral side (2222); Monitor the temperature Q1 of the gallbladder cavity (11) and the temperature Q2 of the cooking cavity (31) and obtain ΔQ, ΔQ=|Q1-Q2|; If ΔQ is greater than the preset temperature difference, the partition (212) is controlled to move and the volume ratio of the first chamber (2111) to the second chamber (2112) is changed until ΔQ is less than or equal to the preset temperature difference.

15. The heat extraction method according to claim 14, characterized in that: Controlling the partition (212) to move in the volute (211) and changing the volume ratio of the first chamber (2111) to the second chamber (2112) includes: If the temperature Q2 of the cooking cavity (31) is greater than the temperature Q1 of the cooking cavity (11), the partition (212) is controlled to move within the volute (211) to reduce the volume ratio of the first cavity (2111) to the second cavity (2112); If the temperature Q2 of the cooking cavity (31) is less than the temperature Q1 of the cooking cavity (11), the partition (212) is controlled to move within the volute (211) to increase the volume ratio of the first cavity (2111) to the second cavity (2112).

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