Air passage system and cooking apparatus with same

Abstract

An air passage system comprises a hot air system 300 connected on one side of a heating chamber 101 and used for driving and heating air in the heating chamber and then guiding the heated air into the

Description

BACKGROUND OF THE INVENTION

[0001] 1. Technical Field

[0002] The invention relates to the technical field of cooking equipment, and particularly relates to an air passage system and a cooking apparatus with the same.

[0003] 2. Description of Related Art

[0004] In the prior art, existing appliances for cooking food by means of air heating can only fry or roast food.

[0005] In the prior art, a hot air system is generally arranged at the top of a heating chamber, a heating component in the hot air system is located below a fan, and the hot air system drives air in a main body to form an air flow, which passes through the heating component and is then directly blown into the heating chamber to heat food in the heating chamber. In an existing hot air system, to reduce the space occupied by components, the heating component is configured as a coil pipe, and the fan is located on one side of the coil pipe, that is, the air flow moves from one side of the coil pipe to the other side of the coil pipe. However, because only one coil pipe is used for heating air of unit flow, the heating efficiency is limited, and a high-temperature hot air flow can be obtained after multiple air circulations.

[0006] In addition, Chinese Invention Patent Publication No. CN210185391U discloses a cooking apparatus, comprising an inner container, a shell, an insulation cover and a lid, wherein the insulation cover is located between the inner container and the shell, and the lid is hinged to the shell; the cooking apparatus further comprises an air flow heating device, and the air flow heating device comprises an air generation device, an air passage, an air inlet and an air outlet; a main part of the air passage is located between the shell and the insulation cover, the air inlet is located in the shell, the air generation device is located below the insulation cover, and air from the air inlet of the air generation device flows to the air outlet via the air passage and then flows downwards into the inner container vertically or obliquely; and an exhaust hole is formed in the lid. In the invention, air to be heated flows from the outside of apparatus into the inner container, and heated air is directly discharged out of the apparatus, such that little cooking fume is generated in the inner container, the air for heating food is fresh, and cooked food tastes good and is healthy.

[0007] The above cooking apparatus in the prior art has the following defects: the air flow enters the cooking chamber from one position and comes in contact with the inner wall of the cooking chamber to be deflected to heat the space at other positions in the cooking chamber. As a result, the air flow entering the cooking chamber from the middle of the top of the cooking chamber is deflected at the bottom of the heating chamber to flow towards two sides, the temperature of the middle of the whole space in the heating chamber is far higher than that of two sides, and the food heating efficiency in the middle is much higher than the food heating efficiency on the periphery, leading to a non-uniform taste of food and reducing the sense of satisfaction in eating of customers. BRIEF SUMMARY OF THE INVENTION

[0008] To solve the abovementioned problems in the prior art, the invention provides an air passage system and a cooking apparatus with the same.

[0009] An air passage system, comprising:

[0010] a heating chamber; and

[0011] a hot air system, arranged on a side of the heating chamber, connected to the heating chamber, and used for driving and heating air in the heating chamber and then guiding the heated air into the heating chamber;

[0012] wherein, an air guide plate is arranged between the heating chamber and the hot air system, and the air guide plate guides the air from the heating chamber into an air guide cavity of the hot air system in a curved shape and then outputs the air into the heating chamber from an air outlet portion of the air guider cavity.

[0013] Further, the hot air system comprises an air driving component and a heating component which are arranged in a first direction, and the heating component is located on a side close to the heating chamber;

[0014] an air guide area and a heating area are arranged in the hot air system according to positions of the air driving component and the heating component;

[0015] an air flow moves from the heating chamber to the heating area along an outflow path, moves in the heating area along a heating path, and then moves from the heating area to the air guide area along an inflow path;

[0016] a direction of the heating path is perpendicular to the first direction.

[0017] Further, the outflow path, the heating path and the inflow path are connected in an S shape.

[0018] Further, an air guide surface of the air guide plate is parallel to the heating path, and an air guide portion corresponding to an outer area of the heating component is arranged on the air guide plate.

[0019] The invention further provides a cooking apparatus, comprising the air passage system; and

[0020] a pot having an upper end surface formed with an opening, wherein the pot is detachably arranged in the heating chamber;

[0021] first air inlets are located above the opening of the pot;

[0022] an air vent used for inputting a hot air flow is formed in a lower end of a side, facing the hot air system, of the pot.

[0023] Further, an air outlet area is arranged in the pot and located on a same pot wall as the air vent, and the air outlet area is used for outputting the air flow from the pot into the hot air system.

[0024] Further, retaining portions are protrusively arranged on two symmetrical inner walls of the pot, and an interlayer plate is detachably arranged on the retaining portion;

[0025] an inner cavity of the pot is divided by the interlayer plate into an upper cooking area and a lower cooking area;

[0026] the air outlet area is connected to the two cooking areas.

[0027] Further, air inlet portions are arranged on the air guide plate, and a hot air flow blown out by the hot air system enters the heating chamber via the air inlet portions;

[0028] the number of the air inlet portions is two, and at least one of the air inlet portions corresponds to the air vent.

[0029] Further, air plugs are arranged between the air vent and the air inlet portions.

[0030] Further, the two air inlet portions on the air guide plate are arranged with one above the other and located on upper and lower sides of the air guide portion respectively;

[0031] air outlet ducts corresponding to the two air inlet portions are arranged on the hot air system.

[0032] Compared with the prior art, the invention has the following beneficial effects:

[0033] 1. A curved air outlet passage is arranged to extend the heating path of an air flow to ensure that the air flow can make full contact with the heating component to form a hot air flow quickly, thus improving food processing efficiency;

[0034] 2. The air inlet portions of the heating chamber are added to input hot air flows into the heating chamber at multiple positions to increase the temperature in the heating chamber quickly and guarantee uniform heating efficiency of the heating chamber, such that the food processing speed is increased, the taste of food is improved, and customers can accurately determine the processing time and efficiency. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0035] FIG. 1 is an exploded structural view according to Embodiment 1.

[0036] FIG. 2 is a schematic diagram of the moving path of a hot air flow according to Embodiment 1.

[0037] FIG. 3 is an exploded structural view of a hot air passage.

[0038] FIG. 4 is a structural view of a hot air shell.

[0039] FIG. 5 is a structural view of an air driving component.

[0040] FIG. 6 is a sectional structural view of the air driving component.

[0041] FIG. 7 is a structural view of an air guide plate.

[0042] FIG. 8 is a structural view of a top cover.

[0043] FIG. 9 is a structural view according to Embodiment 2.

[0044] FIG. 10 is a split structural view of a pot and a cooking body.

[0045] FIG. 11 is an exploded structural view of the air guide plate and air plugs according to Embodiment 2.

[0046] FIG. 12 is a structural diagram of the pot.

[0047] FIG. 13 is a sectional structural view of the pot.

[0048] FIG. 14 is a structural view of an interlayer plate mounted in the pot.

[0049] Reference signs: 100, cooking body; 101, heating chamber; 200, pot; 201, air vent; 220, air outlet area; 300, hot air system; 310, heating component; 320, air driving component; 330, hot air shell; 331, air outlet duct; 340, cooling fan; 350, motor; 321, base plate; a, first bevel edge; b, second bevel edge; c, arc edge; 321.1, air guide rib; 322, air guide vane; 322.1, first end; 322.2, second end; 324, support portion; 325, air outlet; 323, fan plate; 400, air guide plate; 410, air guide surface; 401, first air inlet; 402, second air inlet; 411, air guide piece; 403, air outlet; 500, top cover; 510, air guide rib; 600, air plug; 610, extension edge; 700, interlayer plate. DETAILED DESCRIPTION OF THE INVENTION

[0050] To further expound the technical means adopted to fulfill desired purposes and effects of the invention, the specific implementations, structures, features and effects of the invention are described in detail below in conjunction with accompanying drawings and preferred embodiments. [0051 ] As shown in FIGS. 1 -14, an air passage system and a cooking apparatus with the same are disclosed in the following embodiments.

[0052] Embodiment 1

[0053] As shown in FIGS. 1-8, this embodiment discloses an air passage system, comprising:

[0054] a heating chamber 101; and

[0055] a hot air system 300, arranged on one side of the heating chamber 101, connected to the heating chamber 101, and used for driving and heating air in the heating chamber 101 and then guiding the heated air into the heating chamber 101;

[0056] wherein, an air guide plate 400 is arranged between the heating chamber 101 and the hot air system 200, and the air guide plate 400 guides the air from the heating chamber 101 into an air guide cavity of the hot air system 300 in a curved shape and then outputs the air into the heating chamber 101 from an air outlet portion of the air guide cavity.

[0057] The above is the basic scheme of this embodiment.

[0058] Specifically, referring to FIGS. 1-2, the hot air system 300 operates to drive air in the heating chamber 101 to form an air flow, which is sucked into the hot air system 300 to be heated, and then the hot air flow is output into the heating chamber 101 to process food in the heating chamber 101.

[0059] In this embodiment, when the hot air system 300 operates, the air pressure outside the heating chamber 101 will be decreased, and the air pressure in the heating chamber 101 is higher than the air pressure outside the heating chamber 101, so an air flow is formed by air in the heating chamber 101 and output towards the hot air system 300; and under the action of the air guide plate 400, the output path of the air flow is curved, and compared with a linear output path, the curved output path is longer, so the air flow can be heated more sufficiently in the hot air system 300 to turn into a hot air flow at a higher temperature, which is then output into the heating chamber 101 to rapidly increase the temperature in the heating chamber 101, thus improving food processing efficiency.

[0060] In this embodiment, the hot air system 300 adopts the following configuration: the hot air system 300 comprises an air driving component 320 and a heating component 310 which are arranged in a first direction, and the heating component 310 is located on a side close to the heating chamber 101;

[0061] an air guide area and a heating area are arranged in the hot air system 300 according to positions of the air driving component 320 and the heating component 310;

[0062] the air flow moves from the heating chamber 101 to the heating area along an outflow path, moves in the heating area along a heating path, and then moves from the heating area to the air guide area along an inflow path;

[0063] the direction of the heating path is perpendicular to the first direction.

[0064] To facilitate understanding, in this embodiment, the first direction is defined as the horizontal direction, the hot air system 300 is arranged on one side of the heating chamber 101, and the air driving component 320, the heating component 310, the air guide plate 400 and the heating chamber 101 are arranged sequentially. In this way, during the movement process of the air flow, the air flow is output from the heating chamber 101 by means of the air guide plate 400 and then heated by the heating component 310 to turn into a hot air flow that enters the air driving component 320, and then the air driving component 320 outputs the hot air flow into the heating chamber 101.

[0065] Specifically, to guarantee the output efficiency of the hot air flow to ensure that the air flow can completely enter the heating chamber 101, in this embodiment, a hot air shell 330 is arranged outside the air driving component 320. Referring to FIGS. 3 and 4, the hot air shell 330 is a semi-shell, a groove in the hot air shell 330 is divided by an into the air guide area and the heating area by means of a partition, the air driving component 320 is located in the air guide area, and the heating component 310 is located in the heating area; and an air hole is formed in the center of the partition plate and used for air inflow.

[0066] Specifically, when moving along the heating path, the air flow can make contact with the heating component 310 on each section to be heated repeatedly, such that the temperature of the air flow can be increased quickly, thus improving the temperature rise rate of the air flow.

[0067] To reduce the space occupied by the hot air system 300, the heating component 310 is parallel to an air guide surface 410 of the air guide plate 400, and the outflow path and the inflow path are both perpendicular to the air guide surface 410. Preferably, in this embodiment, the outflow path, the heating path and the inflow path are connected in an S shape.

[0068] To ensure that the air flow can be smoothly guided from the heating chamber 101 to an outer area of the heating component 310, in this embodiment, the air guide surface 410 of the air guide plate 400 is parallel to the heating path, and an air guide portion corresponding to the outer area of the heating component 310 is arranged on the air guide plate 400.

[0069] Preferably, in this embodiment, the air guide portion is formed by a plurality of air outlets 430 formed in the air guide plate 400, the air outlets 403 are arranged around the center of the air guide plate 400, and a gap is reserved in the center of the air guide plate 400.

[0070] That is to say, when output from the heating chamber 101 into the hot air system 300, the air flow is guided to the outer area of the heating component 310 along the outflow path via the air outlets 403 in the air guide plate 400 and then moves from the outer area of the heating component 310 to the center of the heating component 310 along the heating path, such that the heating path is extended.

[0071] Embodiment 2

[0072] This embodiment discloses a cooking apparatus, comprising the air passage system in Embodiment 1 and a pot 200 having an upper end surface formed with an opening, wherein the pot 200 is detachably arranged in the heating chamber 101;

[0073] first air inlets 401 are located above the opening of the pot 200;

[0074] an air vent 201 for inputting a hot air flow is formed in a lower end of a side, facing the hot air system 300, of the pot 200.

[0075] Referring to FIGS. 9 and 10, in this embodiment, the pot 200 is arranged in the heating chamber 101 of a cooking body 100 and can be pushed in and pulled out of the heating chamber 101, the air vent 201 is formed in the lower end of the side, facing the hot air system 300, of the pot 200, and an air outlet area 220 is arranged in the middle of the side, facing the hot air system 300, of the pot 200 and used for outputting the air flow.

[0076] Air holes are formed in the air outlet area 220.

[0077] The air outlet area 220 is arranged in the pot 200 and located on a same pot wall as the air vent 201, and the air outlet area 220 is used for outputting the air flow from the pot into the hot air system.

[0078] In addition, to cooperate with the inflow path and the outflow path, in this embodiment, the air vent 201 of the pot 200 is formed in the lower end of the pot wall, and the air outlet area 220 is arranged in the middle of the pot wall.

[0079] Hot air flows entering the pot 200 via the opening of the pot 200 and the air vent 201 in the lower end of the pot 200 respectively move in an upper portion and a lower portion of an inner cavity of the pot 200, are mixed when reaching the middle of the inner cavity, and are then output via the air outlet area 220.

[0080] In this embodiment, retaining portions 230 are protrusively arranged on two symmetrical inner walls of the pot 200, and an interlayer plate 700 is detachably arranged on the retaining portions 230;

[0081] the interlayer plate 700 divides the inner cavity of the pot 200 into an upper cooking area and a lower cooking area;

[0082] the air outlet area 220 is connected to the two cooking areas.

[0083] Specifically, referring to FIGS. 12-14, the retaining portions 230 are protrusively arranged in the middles of the inner walls of the pot 200; when the interlayer plate 700 is placed on the retaining portion, the inner cavity of the pot 200 is divided into the upper cooking area and the lower cooking area, and different foods can be placed by users into the two cooking areas to be processed respectively;

[0084] when hot air flows enter the pot 200 via the opening of the pot 200 and the air vent 201 of the pot 200 respectively, the hot air flow from above moves downwards and when coming in contact with the interlayer plate 700, is deflected to be output via the air outlet area 220; at the same time, the hot air flow from below moves upwards and when coming in contact with the interlayer plate 700, is deflected to be output via the air outlet area 220.

[0085] In this way, in this embodiment, by arranging the interlayer plate 700 in the middle of the air outlet area 220, both air in the upper cooking area and air in the lower cooking area can be output via the air outlet area 220.

[0086] In this embodiment, to match the structure of the pot 200 to realize input of the hot air flow, air inlet portions are arranged on the air guide plate 400, and the hot air flow blown out by the hot air system 300 enters the heating chamber 101 via the air inlet portions;

[0087] the number of the air inlet portions is two, and at least one of the air inlet portions corresponds to the air vent 201.

[0088] Referring to FIG. 7, in this embodiment, the air guide plate 400 is configured as a semienclosure structure with three side surfaces, the side surface which is located in the middle and connected to the side surfaces on two sides is configured as the air guide surface 410, and the air inlet portions are arranged on the air guide surface 410.

[0089] Preferably, in this embodiment, the air inlet portions are arranged on an upper portion and a lower portion of the air guide plate 400 respectively, air inlets located in the upper portion of the air guide plate 400 are the first air inlets 401, and a hot air flow is input via the first air inlets 401 and then enters the pot 200 via the opening in the upper end of the pot 200; air inlets located in the lower portion of the air guide plate 400 are second air inlets 402, and the second air inlets 402 are connected to the air vent 201 in the pot 200.

[0090] Preferably, to guide the hot air flow input via the first air inlets 401, in this embodiment, air guide pieces 411 which are located on edges of the first air inlets 401 and extend towards the heating chamber 101 are arranged on the air guide plate 400.

[0091] In this embodiment, the air guide pieces 411 are perpendicular to an end surface of the air guide plate 400 and are formed in vertical edges of the first air inlets 401.

[0092] To ensure that the hot air flow input via the first air inlets 401 can be deflected to move downwards, in this embodiment, a top cover 500 is arranged at the top of the heating chamber 101, and a plurality of air guide ribs 510 extending towards the heating chamber are arranged on the top cover 500; and the air guide ribs 510 can horizontally block the air flow entering the top of the heating chamber 101.

[0093] Referring to FIG. 1, when the hot air flow just enters the heating chamber 101 via the first air inlets 401, the hot air flow will move horizontally by a certain distance; and when moving horizontally to the air guide ribs 510, the hot air flow will hit against side walls of the air guide ribs 510 to be deflected to move downwards.

[0094] Specifically, in this embodiment, the air guide ribs 510 are sequentially arranged in an air inlet direction, and the thickness of the air guide ribs 510 increases gradually in the air inlet direction.

[0095] Specifically, referring to FIG. 8, in this embodiment, the thickness of the air guide ribs 510 nearest the first air inlets 401 is minimum and increases gradually in a direction away from the first air inlets 401. In this way, when the hot air flow moves to the air guide ribs 510 nearest the first air inlets 401, only the hot air flow at the top will come in contact with the first air guide rib 510 to be deflected, and the hot air flow located below the first air guide rib 510 will move horizontally continuously until the hot air flow comes in contact with the corresponding air guide ribs 510.

[0096] In this way, part of the hot air flow will be deflected to move downwards at the position of each air guide rib 510, thus guaranteeing the uniformity of the hot air flow in the heating chamber 101.

[0097] The upper end of the pot 200 is open, the lower end of the pot is sealed, and the air vent 201 is formed in a side wall of the pot 200 and used for air inflow; and to prevent elements arranged at the bottom of the inside of the cooking body 100 from being affected by overflowing hot air, in this embodiment, air plugs 600 are arranged between the air vent 201 and the air inlet portions.

[0098] Referring to FIG. 11, the air plugs 600 are arranged on the second air inlets 402 and are shells with two open ends and a hollow middle portion;

[0099] the air plugs 600 are clamped in the second air inlets 402.

[00100] In this embodiment, the air plugs 600 function as air shield structures arranged between the first air inlets 401 and the air vent 201 in the bottom of the pot to prevent the hot air flow from overflowing into a gap between the pot 200 and the air guide plate 400 when moving to the air vent 201 of the pot from the first air inlet 401, such that the hot air flow is prevented from being diffused to other positions in the cooking body 100.

[00101] Therefore, in this embodiment, the air plugs 600 are made from rubber and can be squeezed; in addition, the air plug 600 are long enough to be at least in close fit and contact with the outer surface of the pot 200 to prevent gaps from being formed between the air plugs 600 and the outer surface of the pot.

[00102] Moreover, for connecting the air plugs 600 and the first air inlets 401, an extension edge 610 is arranged at one end of each of the air plugs 600, and outer ends of the extension edges 610 protrude out of outer surfaces of the air plugs 600.

[00103] Main parts of the air plugs 600 are clamped in the first air inlets 401 and pushed towards the heating chamber 101, and when the air plugs 600 are pushed to the maximum extent, end surfaces of the extension edges 601 are in close contact with end surface of the air guide plate 400, and at this moment, the air plugs 600 cannot be further pushed anymore.

[00104] According to the above description, the two air inlet portions on the air guide plates 400 are arranged with one above the other and located on upper and lower sides of the air guide portion respectively;

[00105] air outlet ducts 331 corresponding to the two air inlet portions are arranged on the hot air system 300.

[00106] In the cooking body 100, the hot air system 300 and the heating chamber 101 are isolated by the air guide plate 400, and an air flow from the heating chamber 101 is guided into the hot air system 300 by means of the air guide plate 400 under the action of the hot air system 300 and is then guided back into a hot air chamber by means of the air guide plate 400.

[00107] Therefore, air outlets 403 are formed in the middle of the air guide plate 400.

[00108] Specifically, to guarantee the output efficiency of the hot air flow to ensure that the hot air flow can completely enter the heating chamber 101, in this embodiment, a hot air shell 330 is arranged outside the air driving component 320. Referring to FIGS. 3 and 4, the hot air shell 330 is a semi-shell, a groove in the hot air shell 330 is divided by a partition plate into an air guide area and a heating area, the air driving component 320 is located in the air guide area, and the heating component 310 is located in the heating area; and an air hole is formed in the center of the partition plate and used for air inflow.

[00109] The air outlet ducts 331 connected to the air guide area are arranged on the hot air shell 330, and the positions of the air outlet ducts 331 correspond to the positions of the first air inlets 401 and the second air inlets 402 in the air guide plate 400; and the hot air flow can overflow from the hot air shell 330 to enter the first air inlets 401 and the second air inlets 402 via the air outlet ducts 331.

[00110] Referring to FIG. 4, in this embodiment, the air outlet ducts 331 are arranged at upper and lower ends of the hot air shell 330, and the two air outlet ducts 331 located at the lower end of the hot air shell 330 are specifically arranged at two corners. Correspondingly, in this embodiment, two second air inlets 402 are formed in the air guide plate 400 and located at two comers of the air guide surface 410.

[00111] The air driving component 320 is a centrifugal fan, an air inlet is formed in the center of the centrifugal fan, and air outlets 325 are formed in a lateral portion of the centrifugal fan.

[00112] The centrifugal fan is driven by a driving component.

[00113] Specifically, in this embodiment, the air driving component 320 comprises a base plate 321, a plurality of air guide vanes 322 and a fan plate 323 which are formed integrally, wherein the air guide vanes 332 are arranged in a ring shape and connected between the base plate 321 and the fan plate 323, an air cavity is formed between the base plate 321 and the fan plate 323, and the air outlets 325 are formed between the adjacent air guide vanes 322.

[00114] The air guide vanes are perpendicular to the base plate 321 and / or the fan plate 323.

[00115] Specifically, referring to FIG. 4, in this embodiment, the base plate 321 is an approximately circular panel, and a driving hole connected to a motor is formed in the center of the base plate 321; the air guide vanes 322 are perpendicularly arranged on the base plate 321, and in this embodiment, the fan plate 323 is also perpendicular to the air guide vanes 322, that is to way, the fan plate 323 and the base plate 321 are arranged in parallel.

[00116] Two ends of each of the air guide vanes 322 are connected to the base plate 321 and the fan plate 323 respectively and are not connected to the center of the base plate 321, such that the air inlet space in the middle of the centrifugal fan is enlarged, thus improving air guide efficiency.

[00117] To guarantee the connection between the air guide vanes and the fan plate 323, in this embodiment, and the fan plate 323 is a circular plate and at least cover projections of the air guide vanes 322 on an end surface of the fan plate 323.

[00118] The projections of the air guide vanes 322 on the base plate 321 are straight lines, and each of the air guide vanes 322 has a first end 322.1 and a second end 322.2.

[00119] The distance between the first end 322.1 and the center of the base plate 321 is greater than the distance between the second end 322.2 and the center of the base plate 321.

[00120] Specifically, referring to FIG. 6, in this embodiment, the air guide vanes 322 are straight surfaces, so the hot air flow is linearly blown out via the air outlets along the air guide vanes 322, that is to say, if the air inlet portions of the cooking apparatus are arranged on an air outlet path of the hot air flow, almost all the hot air flow blowing out by the centrifugal fan can enter the air inlet portions, thus greatly increasing the air utilization rate.

[00121] Preferably, in this embodiment, to guarantee the maximum air outlet efficiency, the first end 322.1 and the second end 322.2 of each of the air guide vanes 322 are respectively connected to the center of the base plate 321 to form an air guide angle a, and a=l 5°.

[00122] Moreover, the number of the air guide vanes 322 is preferably 12, that is, in this embodiment, the air guide angle is equal to the angle of the air outlets 325. The angle of the air guide vanes 322 and the angle of the air outlets 325 are balanced, thus guaranteeing the maximizing air output.

[00123] When the hot air flow is blown out under the action of the centrifugal fan, the hot air flow will move outwards in the centrifugal fan under the centrifugal effect; and when moving to the straight air guide vanes 322, the hot air flow will deflected by the air guide vanes 322 which are arranged obliquely with respect to the diameter of the centrifugal fan 322, to be blown out linearly along the end surfaces of the air guide vanes 322.

[00124] In addition, in this embodiment, a cooling fan 340 is arranged outside the air guide shell, the air driving component 320 is driven to rotate by a motor 350, a large quantity of heat will be generated during the operating process of the motor 350, and the cooling fan 340 is connected to a shaft of the motor 350 and located between the motor 350 and the hot air shell 330, and when the motor 350 operates, the cooling fan 340 is driven to rotate to cool the motor 350.

[00125] The above embodiments are merely preferred ones of the invention and are not intended to limit the invention in any forms. Although the invention has been disclosed above with reference to preferred embodiments, the invention is not limited to the above embodiments, and any skilled in the art can make some modifications or embellishments to the technical contents disclosed above to obtain equivalent embodiments without departing from the scope of the technical solution of the invention. Any simple amendments and equivalent modifications and embellishments made to the above embodiments according to the technical essence of the invention without departing from the technical contents of the invention should also fall within the scope of the technical solutions of the invention.

Claims

1. An air passage system, comprising:a heating chamber (10); anda hot air system (300), arranged on a side of the heating chamber (101), connected to the heating chamber (101), and used for driving and heating air in the heating chamber (10) and then guiding the heated air into the heating chamber (10);wherein, an air guide plate (400) is arranged between the heating chamber (10) and the hot air system (300), and the air guide plate (400) guides the air from the heating chamber (101) into an air guide cavity of the hot air system (300) in a curved shape and then outputs the air into the heating chamber (10) from an air outlet portion of the air guider cavity.

2. The air passage system according to claim 1, wherein the hot air system (300) comprises an air driving component (320) and a heating component (310) which are arranged in a first direction, and the heating component (310) is located on a side close to the heating chamber (10);an air guide area and a heating area are arranged in the hot air system (300) according to positions of the air driving component (320) and the heating component (310);an air flow moves from the heating chamber (101) to the heating area along an outflow path, moves in the heating area along a heating path, and then moves from the heating area to the air guide area along an inflow path;a direction of the heating path is perpendicular to the first direction.

3. The air passage system according to claim 2, wherein the outflow path, the heating path and the inflow path are connected in an S shape.

4. The air passage system according to claim 2, wherein an air guide surface (410) of the air guide plate (400) is parallel to the heating path, and an air guide portion corresponding to an outer area of the heating component (310) is arranged on the air guide plate (400).

5. A cooking apparatus, comprising the air passage system according to any one of claims 1-4 and a pot (200) having an upper end surface formed with an opening, wherein the pot (200) is detachably arranged in the heating chamber (101);first air inlets (401) are located above the opening of the pot (200);an air vent (201) used for inputting a hot air flow is formed in a lower end of a side, facingthe hot air system (300), of the pot (200).

6. The cooking apparatus according to claim 5, wherein an air outlet area (220) is arranged in the pot (200) and located on a same pot wall as the air vent (201), and the air outlet area (220) is used for outputting the air flow from the pot (200) into the hot air system (300).

7. The cooking apparatus according to claim 6, wherein retaining portions (230) are protrusively arranged on two symmetrical inner walls of the pot (200), and an interlayer plate (600) is detachably arranged on the retaining portion (230);an inner cavity of the pot (200) is divided by the interlayer plate (700) into an upper cooking area and a lower cooking area;the air outlet area (220) is connected to the two cooking areas.

8. The cooking apparatus according to claim 5, wherein air inlet portions are arranged on the air guide plate (400), and a hot air flow blown out by the hot air system (300) enters the heating chamber (101) via the air inlet portions;the number of the air inlet portions is two, and at least one of the air inlet portions corresponds to the air vent (201).

9. The cooking apparatus according to claim 8, wherein air plugs (600) are arranged between the air vent (201) and the air inlet portions.

10. The cooking apparatus according to claim 9, wherein the two air inlet portions on the air guide plate (400) are arranged with one above the other and located on upper and lower sides of the air guide portion respectively;air outlet ducts (331) corresponding to the two air inlet portions are arranged on the hot air system (300).

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