Oven and steaming oven

Abstract

The invention relates to the technical field of cooking equipment, in particular to an oven and a steaming oven, the oven comprises an oven body, a door plate and a hot air circulating system, the door plate is rotatably connected with the oven body and used for sealing the oven body, a partition plate is arranged on the back of the oven body and divides the oven body into a first cavity and a second cavity, and the first cavity is communicated with the second cavity. The hot air circulating system is arranged in the second cavity, an air inlet coaxial with the wind wheel is formed in the center of the partition plate, air outlets are formed in the periphery of the partition plate, and hot air generated by the hot air circulating system enters the first cavity through the air outlets and flows back into the second cavity through the air inlet. The hot air circulating system comprises a driving motor, a wind wheel and a heating assembly, the wind wheel is connected with the driving motor, and the heating assembly is arranged on the inner periphery or the outer periphery of the wind wheel in a sleeved mode. The hot air circulation effect is uniform and stable, the uniform heating effect is provided for all positions in the oven, and the oven is suitable for baking multiple layers of food materials at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking appliances, and more specifically, to an oven and a steam oven. Background Art

[0002] Traditional ovens have become important cooking appliances in household kitchens. The baked food has a fragrant aroma and a crispy texture, and is deeply loved by consumers. However, during the long-term high-temperature baking process, the food is prone to the problem of dry and hard texture. The emergence of steam ovens is to solve this problem. By adding high-temperature steam into the cooking cavity during the baking process and baking the food through the high-temperature steam heat cycle, a crispy exterior and tender interior texture can be finally obtained.

[0003] In the prior art, a Chinese patent application with the publication number CN113749529A discloses an air oven with a hot air circulation heating system. The oven includes an inner cavity, an outer cavity, a hot air circulation system and a heat dissipation system. The hot air circulation system includes a turbo fan assembly, a motor and a ventilation duct. The upper part of the ventilation duct is located in the upper part of the oven, and the lower part of the ventilation duct is located on the side or rear of the oven, and the lower part of the ventilation duct is connected to the turbo fan assembly. Among them, the motor drives the turbo fan assembly, and the air generated in the turbo fan assembly flows from the lower part of the ventilation duct to the upper part of the ventilation duct. However, this oven constructs the hot air circulation in the way of top air outlet and bottom air return, and when baking multiple layers of food, it is easy to have the problem of uneven cooking effect. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiency of uneven cooking effect when baking multiple layers of food in the prior art, and provide an oven and a steam oven, which provide a uniform heating effect for each position in the oven through a uniform and stable hot air circulation, and are suitable for baking multiple layers of food simultaneously.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: Provide an oven, including a box body, a door panel rotatably connected to the box body for closing the box body, and a hot air circulation system. A partition is provided on the back of the box body, and the partition divides the box body into a first cavity and a second cavity. The hot air circulation system is arranged in the second cavity. An air inlet coaxial with the wind wheel is provided at the center of the partition, and air outlets are provided around the partition. The hot air generated by the hot air circulation system enters the first cavity through the air outlets and flows back to the second cavity through the air inlet. The hot air circulation system includes a driving motor, a wind wheel and a heating component. The wind wheel is connected to the driving motor, and the heating component is sleeved on the inner or outer circumference of the wind wheel.

[0006] During operation of the oven of the present invention, the driving motor in the second cavity drives the wind wheel to rotate, generating a high-speed airflow, which is heated up to become hot air after passing through the heating component. The hot air passes through the air outlets around the partition and enters the first cavity. Since a low-pressure area is generated in the center of the wind wheel during its rotation, the hot air flows back from the air inlet in the center of the partition to the second cavity, forming a uniform and hot air circulation. The food in the first cavity is baked by return air heating, providing a uniform heating effect for each position in the oven, and is suitable for baking multiple layers of food at the same time.

[0007] Furthermore, the wind wheel includes a windshield, blades, and a wind guide for guiding wind, and a plurality of groups of blades are evenly arranged around the end surface of the windshield, and the wind guide is arranged on or connected to the blades, and / or, the wind guide is arranged on or connected to the windshield. During the rotation of the wind wheel, a low-pressure area is formed at the center, so that air is sucked in, the airflow is blocked by the windshield, the direction of the airflow is changed, and finally flows out from between adjacent blades. During the air flow, the wind guide arranged on the blades or the windshield will guide the direction of the airflow, reducing the vortex and turbulence that occur during the rotation process. Furthermore, the air guide portion is an air guide ring disposed on the top of the blade, and the axis of the air guide ring coincides with the axis of the wind shield. The air guide ring can make the air flow out of the wind wheel in all directions more evenly, thereby evenly covering the oven cavity and reducing local high temperature or low temperature areas.

[0008] Furthermore, the air guide ring includes a first arc portion, an annular portion, and a second arc portion arranged from top to bottom, the diameter of the outer edge of the second arc portion is equal to the diameter of the wind shield, and the diameter of the outer edge of the first arc portion is smaller than the diameter of the wind shield. The outer diameter of the first arc portion is controlled to be smaller than the diameter of the wind shield, while the diameter of the second arc portion is kept the same as the diameter of the wind shield, so that the airflow can smoothly enter the air guide ring, avoiding the influence of the air guide effect due to the excessively large diameter of the second arc portion, ensuring that the annular portion can fully play the role of guiding, and keeping the air volume in all directions consistent.

[0009] Furthermore, the wind guide portion is a wind guide groove arranged between the blade and the wind shield. The wind guide groove guides the disordered radial airflow generated on the wind shield due to the high-speed rotation of the wind wheel, eliminates local airflow accumulation, and makes the hot air evenly cover all areas of the cavity.

[0010] Furthermore, the air guide groove includes an annular groove arranged on the end surface of the wind shield and a concave hole arranged at the bottom of the blade, and the axis of the annular groove coincides with the axis of the wind shield. The annular groove and the concave hole can cooperate to form air flow channels of different shapes, and the cross-sectional area of ​​the air guide groove is adjusted according to the air volume during actual operation, and different annular groove shapes and concave hole shapes are selected to reduce the difficulty of processing.

[0011] Furthermore, the blade includes a first mounting portion and a flow guiding portion which are vertically connected. The first mounting portion is connected to the wind deflector, and the air guiding portion is a flow guiding rib provided on the flow guiding portion. The first mounting portion can improve the fixing effect of the blade on the wind deflector, prevent the blade from shaking during rotation, and enhance the air outlet stability. The flow guiding rib can not only improve the strength of the blade, but also guide the air flow direction by changing the air flow path on the surface of the air guiding portion, forcing the air flow to flow along a predetermined direction, enhancing the uniform coverage of the hot air in the oven cavity, and reducing the difference between the cold area and the hot area.

[0012] Furthermore, the blade includes a main body blade and a reinforcing blade which are stacked. The flow guiding rib is provided on the main body blade or the reinforcing blade. The laminated first blade and the second blade together form the blade, which can significantly improve the bending stiffness of the blade, prevent the blade from twisting or breaking during high-speed rotation, and improve the working stability of the wind wheel. The shapes of the main body blade and the reinforcing blade can be selected to be the same shape, or only the reinforcing blade can cover most of the area of the main body blade, both of which can provide a stable supporting effect.

[0013] Furthermore, the air guiding portion is a wind cutting piece provided on the other end face of the wind deflector. The wind cutting pieces are uniformly arranged along the radial direction of the wind deflector around the axis of the wind deflector. The wind cutting pieces on the other end of the wind deflector can guide the cold air at the back, so that the cold air at the back can also participate in the hot air circulation, thereby increasing the air pressure during the hot air circulation.

[0014] Furthermore, the air inlet includes a plurality of groups of first ventilation holes distributed radially. The outer periphery of the air inlet is circular, and the outer diameter of the air inlet is the same as the diameter of the wind wheel. The diameter of the air inlet is adapted to the diameter of the wind wheel. By using the same specification of circular air inlet, the air suction effect during the rotation of the wind wheel is fully exerted, so that the air flow in the first cavity can smoothly pass through the first ventilation holes and flow back to the second cavity.

[0015] Furthermore, the air outlet includes a plurality of groups of second ventilation holes uniformly arranged around the partition board. The second ventilation holes are rectangular holes. The plurality of groups of second ventilation holes uniformly distributed around the partition board ensure that the air flow generated by the wind wheel can flow out evenly from all around. The rectangular holes can make the hot air diffuse uniformly in a laminar flow state, avoid the generation of local eddy currents, and disperse the air flow through a smooth transition, so as to improve the consistency of the air flow velocity passing through the second ventilation holes.

[0016] Further, the second ventilation holes provided at the bottom and top of the partition are rectangular holes with a length greater than the height, and the second ventilation holes provided on both sides of the partition are rectangular holes with a length less than the height. The shape of the rectangular hole is adapted to the air outlet direction of the wind wheel. Whether the wind wheel rotates clockwise or counterclockwise, the air flow can smoothly discharge from the second ventilation hole along the tangential direction. By controlling the shape of the rectangular hole, the wind resistance during the movement of the air flow can be reduced, thereby increasing the hot air circulation speed and heating efficiency.

[0017] Further, the oven further includes a cooling fan, a centrifugal air duct, and an exhaust box. The cooling fan is provided between the wind wheel and the drive motor. The exhaust box is provided at the top of the cabinet body. The centrifugal air duct connects the cooling fan and the exhaust box. The heat generated during the operation of the drive motor is extracted by the cooling fan and directed through the centrifugal air duct to the exhaust box at the top of the cabinet body for discharge, preventing the drive motor from overheating during operation and extending the service life of the drive motor.

[0018] The present invention also provides a steam oven, which includes an oven, a steam generator, and a water tank. The water tank is detachably provided on the side wall of the cabinet body. The steam generator is provided in the second cavity. The steam generator is provided with a water inlet communicating with the water tank and a steam outlet communicating with the first cavity.

[0019] In the steam oven of the present invention, the water tank is installed on the side wall of the cabinet body. During the operation of the steam oven, the water in the water tank flows into the steam generator through the water inlet for heating. The generated high-temperature steam enters the first cavity through the steam outlet to participate in cooking. The high-temperature air flow generated by the hot air circulation system cooperates with the high-temperature steam to provide a uniform and stable cooking effect for the ingredients in the first cavity, improving the cooking uniformity of the internal ingredients and at the same time avoiding the problem of the surface of the ingredients becoming dry and hard.

[0020] Further, a holding portion recessed into the interior of the water tank is provided on the side of the water tank away from the cabinet body. The holding portion includes an arc segment and a straight segment. Both ends of the arc segment are connected to the straight segment. The straight segment is inclined with respect to the side wall of the water tank. The holding portion is recessed into the interior of the water tank, forming a structure similar to a triangle through the arc segment and the straight segment. When the user needs to pick up the water tank, just insert four fingers into the holding portion, and press the palm and thumb tightly against the outer wall of the water tank, then the water tank can be easily picked up. The design of the holding portion conforms to the ergonomic structure, and even when the water tank is full of water, it will not affect the quick disassembly and assembly effect, and the holding process is stable and convenient for cleaning.

[0021] Furthermore, an evaporation plate is provided at the bottom of the first cavity, the bottom of the first cavity is inclined toward the evaporation plate, and a heating pipe is provided at the bottom of the evaporation plate. During the cooking process, condensed water generated inside the first cavity flows along the side wall of the first cavity and the bottom of the first cavity, and finally gathers in the evaporation plate. The heating pipe heats the evaporation plate to turn the condensed water into high-temperature steam again, realizing internal steam recycling, increasing the amount of steam during baking and facilitating cleaning.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. The airflow is guided by the air guide on the wind wheel to form a uniform and stable hot air circulation effect, providing a uniform heating effect for each position in the oven, reducing the temperature difference between the top and bottom layers, and is suitable for baking multiple layers of food at the same time to prevent the upper part from being burnt and the lower part from being raw; 2. Install the heating component in the second cavity to prevent the user from directly contacting the heating component in the cooking cavity, making it easier to clean the cooking cavity. At the same time, it creates the prerequisite for automatic cleaning and reduces the cleaning dead corners caused by the obstruction of the heating component. 3. The large external water tank structure that is easy to hold avoids the tedious operation of adding water multiple times during cooking. The design of the handle makes it easy for consumers to quickly and easily disassemble and assemble the water tank and it is not easy to tip over. 4. An evaporation plate is arranged inside the first cavity to evaporate the condensed water generated during the cooking process, so as to realize internal steam recycling, which can increase the steam volume during the baking process and facilitate cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the oven structure; Figure 2 for Figure 1 Sectional view at the middle AA position; Figure 3 is a schematic diagram of the wind wheel structure; Figure 4 This is a bottom view of the wind wheel; Figure 5 is a schematic diagram of the blade structure; Figure 6 It is a schematic diagram of the heating system structure; Figure 7 is a schematic diagram of the partition structure; Figure 8 This is the main view of the steam oven; Figure 9 for Figure 8 Cross-sectional view of the middle BB position; Figure 10 It is a schematic diagram of the steam oven structure; Figure 11 This is a schematic diagram of the cooling fan structure; Figure 12 It is a schematic diagram of the water tank structure; Figure 13 It is the bottom view of the water tank; Figure 14 It is the top view of the water tank.

[0024] In the accompanying drawings: 100, the box body; 110, the partition; 120, the first cavity; 130, the second cavity; 140, the clamping part; 150, the evaporation tray; 160, the door panel; 170, the air inlet; 171, the first ventilation hole; 180, the air outlet; 181, the second ventilation hole; 200, the driving motor; 300, the wind wheel; 310, the wind baffle; 320, the blades; 321, the first mounting part; 322, the guiding part; 323, the second mounting part; 324, the guiding rib; 325, the main body blade; 326, the strengthening blade; 330, the air guiding ring; 331, the first arc part; 332, the circular ring part; 333, the second arc part; 340, the air guiding groove; 341, the annular groove; 342, the concave hole; 350, the air cutting blade; 351, the fixing part; 352, the air cutting part; 400, the heating assembly; 510, the cooling fan; 520, the centrifugal air duct; 530, the exhaust box; 600, the steam generator; 700, the water tank; 710, the holding part; 711, the arc section; 712, the straight section; 720, the clamping groove; 721, the clamping block. Specific Embodiments

[0025] The present invention will be further described below in conjunction with specific embodiments. Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0026] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Embodiment 1 The present embodiment is the first embodiment of the oven, comprising a housing 100, a door panel 160 rotatably connected to the housing 100 for closing the housing 100, and a hot air circulation system. A partition 110 is provided at the back of the housing 100, and the partition 110 divides the housing 100 into a first cavity 120 and a second cavity 130. The hot air circulation system is arranged in the second cavity 130. An air inlet 170 coaxial with the wind wheel 300 is provided at the center of the partition 110, and air outlets 180 are provided around the partition 110. The hot air generated by the hot air circulation system enters the first cavity 120 from the air outlet 180 and flows back to the second cavity 130 from the air inlet 170. The hot air circulation system comprises a driving motor 200, a wind wheel 300 and a heating assembly 400. The wind wheel 300 is connected to the driving motor 200, and the heating assembly 400 is sleeved on the inner or outer periphery of the wind wheel 300.

[0028] like Figure 1 , Figure 2 As shown, during operation of the oven in this embodiment, the drive motor 200 in the second cavity 130 drives the wind wheel 300 to rotate, generating a high-speed airflow, which is heated up to become hot air after passing through the heating component 400. The hot air passes through the air outlets 180 around the partition 110 and enters the first cavity 120. Since a low-pressure area is generated in the center of the wind wheel 300 during its rotation, the hot air flows back from the air inlet 170 in the center of the partition 110 to the second cavity 130, forming a uniform and funny hot air circulation. The food in the first cavity 120 is baked by return air heating, providing a uniform heating effect for each position in the oven, which is suitable for baking multiple layers of food at the same time.

[0029] like Figure 3 As shown, the wind wheel 300 includes a wind shield 310, blades 320 and a wind guide for guiding wind. A plurality of blades 320 are evenly arranged around the end surface of the wind shield 310. The wind guide is arranged on or connected to the blades 320, and / or the wind guide is arranged on or connected to the wind shield 310. During the rotation of the wind wheel 300, a low-pressure area is formed at the center, so that air is sucked in, the airflow is blocked by the wind shield 310, the airflow direction is changed, and finally flows out from between adjacent blades 320. During the air flow, the wind guide arranged on the blades 320 or the wind shield 310 will guide the airflow direction to reduce the vortex and turbulence occurring during the rotation process. The air guide portion may be an air guide ring 330 disposed on the top of the blade 320, and the axis of the air guide ring 330 coincides with the axis of the wind shield 310. The air guide ring 330 can make the air flow out of the wind wheel 300 in all directions more evenly, thereby evenly covering the oven cavity and reducing local high temperature or low temperature areas.

[0030] like Figure 3As shown in the figure, the air guide ring 330 in this embodiment includes a first arc portion 331, a ring portion 332, and a second arc portion 333 arranged from top to bottom. The diameter of the outer edge of the second arc portion 333 is equal to the diameter of the wind shield 310, and the diameter of the outer edge of the first arc portion 331 is smaller than the diameter of the wind shield 310. By controlling the outer diameter of the first arc portion 331 to be smaller than the diameter of the wind shield 310, while the diameter of the second arc portion 333 remains the same as the diameter of the wind shield 310, the air flow can smoothly enter the air guide ring 330, avoiding the influence on the air guiding effect due to the too large diameter of the second arc portion 333, ensuring that the ring portion 332 can fully play the role of guiding the air flow, and making the air output in all directions consistent.

[0031] In this embodiment, the air guiding portion can also be an air guiding groove 340 provided between the blade 320 and the wind shield 310. The air guiding groove 340 guides the disordered radial air flow generated on the wind shield 310 due to the high-speed rotation of the wind wheel 300, eliminates the local air flow accumulation, and enables the hot air to evenly cover each area of the cavity.

[0032] As Figure 4 、 Figure 5 shown in the figure, the air guiding groove 340 includes an annular groove 341 provided on the end face of the wind shield 310 and a concave hole 342 provided at the bottom of the blade 320. The axis of the annular groove 341 coincides with the axis of the wind shield 310. The cooperation of the annular groove 341 and the concave hole 342 can form air flow channels of different shapes, adjust the cross-sectional area of the air guiding groove 340 according to the air volume size during the actual operation process, and select different shapes of the annular groove 341 and the concave hole 342 to facilitate reducing the processing difficulty.

[0033] As Figure 5 shown in the figure, the blade 320 includes a first mounting portion 321 and a guiding portion 322 that are vertically connected. The first mounting portion 321 is connected to the wind shield 310. In this embodiment, the air guiding portion can also be a guiding rib 324 provided on the guiding portion 322. The first mounting portion 321 can improve the fixing effect of the blade 320 on the wind shield 310, avoid the blade 320 from shaking during rotation, and enhance the air output stability. The guiding rib 324 can not only improve the strength of the blade 320, but also guide the air flow direction by changing the air flow path on the surface of the air guiding portion, forcing the air flow to flow along a predetermined direction, enhancing the uniform coverage of the hot air in the oven cavity, and reducing the difference between the cold area and the hot area. A second mounting portion 323 for connecting the air guide ring 330 is also provided at the top of the blade 320 in this embodiment, and the second mounting portion 323 is perpendicular to the guiding portion 322.

[0034] The blade 320 in this embodiment includes a body blade 325 and a reinforcing blade 326 that are stacked. The guiding rib 324 is provided on the body blade 325 or the reinforcing blade 326. As Figure 5As shown, the laminated first blade 320 and the second blade 320 together form the blade 320, which can significantly improve the bending stiffness of the blade 320, prevent the blade 320 from twisting or breaking during high-speed rotation, and improve the working stability of the wind wheel 300. The shapes of the main body blade 325 and the reinforcing blade 326 can be selected to be the same shape, or only the reinforcing blade 326 can cover most of the area of the main body blade 325, both of which can provide a stable supporting effect.

[0035] In this embodiment, the air guiding part can also be the wind cutting blades 350 arranged on the other end face of the wind baffle 310. The wind cutting blades 350 are uniformly arranged along the radial direction of the wind baffle 310 around the axis of the wind baffle 310. The wind cutting blades 350 on the other end of the wind baffle 310 can guide the cold air at the back, so that the cold air at the back can also participate in the hot air circulation, thereby increasing the wind pressure during the hot air circulation.

[0036] As Figure 4 shown, the wind cutting blade 350 in this embodiment includes a fixed part 351 and a wind cutting part 352 which are vertically arranged. The fixed part 351 is connected to the wind baffle 310. The installation part perpendicular to the wind cutting part 352 can increase the contact area between the wind cutting blade 350 and the wind baffle 310, reduce the installation difficulty of the wind cutting blade 350, and enhance the fixing effect at the same time.

[0037] In addition, it should be noted that the air guiding part in this embodiment can be any two or more combinations of the air guiding ring 330, the air guiding groove 340, the flow guiding rib 324, and the wind cutting blade 350.

[0038] Embodiment Two This embodiment is the second embodiment of the oven. This embodiment is similar to Embodiment One, the difference being that, as Figure 1 、 Figure 6 shown, the diameter of the wind wheel 300 is 1 / 2 - 4 / 5 of the width of the partition 110. The oven adopts a large wind wheel 300 structure, and the size of the wind blades is close to the length and width projection surface of the first cavity 120, which can increase the air volume and wind pressure of the hot air circulation, reduce the cooking time, and is suitable for baking multiple layers of ingredients at the same time.

[0039] As Figure 7 shown, the air inlet 170 includes multiple groups of first ventilation holes 171 distributed radially. The outer periphery of the air inlet 170 is circular, and the outer diameter of the air inlet 170 is the same as the diameter of the wind wheel 300. The diameter of the air inlet 170 is adapted to the diameter of the wind wheel 300. By using the circular air inlet 170 of the same specification, the air suction effect during the rotation of the wind wheel 300 can be fully exerted, so that the air flow in the first cavity 120 can smoothly pass through the first ventilation holes 171 and flow back to the second cavity 130.

[0040] The air outlet 180 includes multiple groups of second ventilation holes 181 evenly arranged around the partition board. The second ventilation holes 181 are rectangular holes. The multiple groups of second ventilation holes 181 evenly distributed around the partition board 110 ensure that the air flow generated by the wind wheel 300 can flow out evenly from all around. The rectangular holes can make the hot air diffuse evenly in a laminar flow state, avoid the generation of local eddy currents, and disperse the air flow through smooth transition, so as to improve the consistency of the air flow velocity passing through the second ventilation holes 181.

[0041] As Figure 7 shown, in this embodiment, the second ventilation holes 181 arranged at the bottom and top of the partition board 110 are rectangular holes with a length greater than the height, and the second ventilation holes 181 arranged on both sides of the partition board 110 are rectangular holes with a length less than the height. The shape of the rectangular holes is adapted to the air outlet direction of the wind wheel 300. Whether the wind wheel 300 rotates clockwise or counterclockwise, it can make the air flow smoothly discharge from the second ventilation holes 181 along the tangential direction. By controlling the shape of the rectangular holes, the wind resistance during the air flow movement can be reduced, thereby improving the hot air circulation speed and heating efficiency.

[0042] The area of the air outlet 180 is 1 / 2 to 4 / 5 of the area of the air inlet 170. By controlling the area of the air outlet 180 to be 1 / 2 to 4 / 5 of the area of the air inlet 170, according to the principle of fluid continuity, the air outlet speed can be increased, ensuring that the air flowing out from the air outlet 180 is all high-speed and high-temperature air flow, thereby increasing the oven cooking efficiency during multi-layer food baking.

[0043] As Figure 2 、 Figure 6 shown, the heating component 400 in this embodiment is a spiral heating pipe sleeved on the outer periphery of the wind wheel 300. During the actual installation process, the spiral heating pipe can also be arranged on the inner periphery of the wind wheel 300 according to needs. The spiral heating pipe can increase the surface area, make the air fully contact with the heating pipe when flowing through, improve the heat exchange efficiency. At the same time, the layout of the spiral pipe around the outer periphery of the wind wheel 300 can save the installation space. When selecting the gap of the spiral installation pipe, the wind resistance and heat conduction requirements need to be considered, so that it will not be blocked due to being too dense, nor will it not be fully heated due to being too wide, ensuring that the hot air is evenly accelerated between the spiral pipes and improving the uniformity of the air outlet temperature.

[0044] The oven further includes a cooling fan 510, a centrifugal air duct 520 and an exhaust box 530. The cooling fan 510 is arranged between the wind wheel 300 and the drive motor 200. The exhaust box 530 is arranged at the top of the box body 100. The centrifugal air duct 520 connects the cooling fan 510 and the exhaust box 530. As Figure 11 shown, when the drive motor 200 operates, the heat generated is extracted by the cooling fan 510, and is directionally guided through the centrifugal air duct 520 to the exhaust box 530 at the top of the box body 100 for discharge, avoiding overheating of the drive motor 200 during operation and extending the service life of the drive motor 200.

[0045] Embodiment III This embodiment is the first embodiment of the steam oven. As Figure 8 、 Figure 9 shown, it includes an oven, a steam generator 600, and a water tank 700. The water tank 700 is detachably arranged on the side wall of the box body 100. The steam generator 600 is arranged in the second cavity 130. The steam generator 600 is provided with a water inlet communicating with the water tank 700 and a steam outlet communicating with the first cavity 120.

[0046] In the steam oven of this embodiment, the water tank 700 is installed on the side wall of the box body 100. During the operation of the steam oven, the water in the water tank 700 flows into the steam generator 600 through the water inlet for heating. The generated high-temperature steam enters the first cavity 120 through the steam outlet to participate in cooking. The high-temperature air flow generated by the hot air circulation system cooperates with the high-temperature steam to provide a uniform and stable cooking effect for the food materials in the first cavity 120, improve the cooking uniformity of the internal food materials, and at the same time avoid the problem that the surface of the food materials becomes dry and hard.

[0047] On the side of the water tank 700 away from the box body 100, there is a holding part 710 that is recessed into the interior of the water tank 700. The holding part 710 includes an arc section 711 and a straight section 712. Both ends of the arc section 711 are connected to the straight section 712. The straight section 712 is inclined with respect to the side wall of the water tank 700. As Figure 12 、 Figure 14 shown, the holding part 710 in this embodiment is recessed into the interior of the water tank 700, and an approximately triangular structure is formed by the arc section 711 and the straight section 712. When the user needs to pick up the water tank 700, just insert the four fingers into the holding part 710, and the palm and thumb are closely attached to the outer wall of the water tank 700, then the water tank 700 can be easily picked up. The design of the holding part 710 conforms to the ergonomic structure, and even when the water tank 700 is full of water, it will not affect the quick disassembly and installation effect, and the holding process is stable and convenient for cleaning.

[0048] As Figure 10 、 Figure 13 shown, the side wall of the box body 100 is provided with a clamping part 140. On the side of the water tank 700 close to the box body 100, there is a clamping groove 720. Inside the clamping groove 720, there are several clamping blocks 721. The clamping part 140 is inserted into the clamping groove 720 and clamped with the clamping blocks 721. The clamping part 140 on the side wall of the box body 100 is connected to the clamping groove 720 on the side wall of the water tank 700, and a stable and quick clamping effect is achieved through the clamping blocks inside the clamping groove 720, keeping the whole water tank 700 stable during the cooking process. The setting of the external water tank 700 can also break through the limitation of the internal space of the box body 100 on the capacity of the water tank 700, forming an external large water tank 700 and avoiding the cumbersome operation of adding water multiple times. As Figure 10As shown, an evaporation pan 150 is provided at the bottom of the first cavity 120. The bottom of the first cavity 120 slopes towards the evaporation pan 150, and a heating tube is provided at the bottom of the evaporation pan 150. During the cooking process, the condensed water generated inside the first cavity 120 flows along the side wall and the bottom of the first cavity 120, and finally converges into the evaporation pan 150. The heating tube heats the evaporation pan 150 to turn the condensed water back into high-temperature steam, realizing the internal steam recycling, increasing the steam volume during the baking process and facilitating cleaning. In the specific content of the above specific embodiments, the technical features can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should be considered as the scope described in this specification.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An oven, characterized in that: The invention comprises a box body (100), a door panel (160) rotatably connected to the box body (100) and used to close the box body (100), and a hot air circulation system, wherein a partition (110) is provided at the back of the box body (100), and the partition (110) divides the box body (100) into a first cavity (120) and a second cavity (130), and the hot air circulation system is arranged in the second cavity (130), and the hot air circulation system comprises a driving motor (200), a wind wheel (300) and a heating component ( 400), the wind wheel (300) is connected to the driving motor (200), and the heating component (400) is sleeved on the inner circumference or outer circumference of the wind wheel (300); an air inlet (170) coaxial with the wind wheel (300) is provided at the center of the partition (110), and air outlets (180) are provided around the partition (110); hot air generated by the hot air circulation system enters the first cavity (120) through the air outlet (180) and flows back to the second cavity (130) through the air inlet (170).

2. The oven according to claim 1, characterized in that: The wind wheel (300) comprises a wind shield (310), blades (320) and a wind guide portion for guiding wind, wherein a plurality of groups of blades (320) are evenly arranged around the end surface of the wind shield (310), the wind guide portion is arranged on or connected to the blades (320), and / or the wind guide portion is arranged on or connected to the wind shield (310).

3. The oven according to claim 2, characterized in that: The wind guide portion is a wind guide ring (330) arranged on the top of the blade (320), and the axis of the wind guide ring (330) coincides with the axis of the wind shield plate (310).

4. The oven according to claim 3, characterized in that: The air guide ring (330) comprises a first arc portion (331), a circular ring portion (332), and a second arc portion (333) arranged from top to bottom, wherein the diameter of the outer edge of the second arc portion (333) is equal to the diameter of the wind shield (310), and the diameter of the outer edge of the first arc portion (331) is smaller than the diameter of the wind shield (310).

5. The oven according to claim 2, characterized in that: The wind guide portion is a wind guide groove (340) arranged between the blade (320) and the wind shield plate (310).

6. The oven according to claim 5, characterized in that: The wind guide groove (340) comprises an annular groove (341) arranged on the end surface of the wind shield (310) and a concave hole (342) arranged at the bottom of the blade (320), and the axis of the annular groove (341) coincides with the axis of the wind shield (310).

7. The oven according to claim 2, characterized in that: The blade (320) comprises a first mounting portion (321) and a flow guide portion (322) which are vertically connected, the first mounting portion (321) being connected to the wind shield (310), and the flow guide portion being a flow guide rib (324) arranged on the flow guide portion (322).

8. The oven according to claim 7, characterized in that: The blade (320) comprises a main blade (325) and a reinforcement blade (326) which are stacked, and the guide rib (324) is arranged on the main blade (325) or the reinforcement blade (326).

9. The oven according to claim 2, characterized in that: The wind guide portion is a wind cutting piece (350) arranged on the other end surface of the wind shield (310), and the wind cutting piece (350) is evenly arranged along the radial direction of the wind shield (310) around the axis of the wind shield (310).

10. The oven according to claim 1, characterized in that: The air inlet (170) comprises a plurality of groups of first ventilation holes (171) distributed along the radial direction, the outer circumference of the air inlet (170) is circular, and the outer diameter of the air inlet (170) is the same as the diameter of the wind wheel (300).

11. The oven according to claim 1, characterized in that: The air outlet (180) comprises a plurality of groups of second ventilation holes (181) evenly arranged around the partition plate (110), and the second ventilation holes (181) are rectangular holes.

12. The oven according to claim 11, characterized in that The second ventilation holes (181) arranged at the bottom and top of the partition (400) are rectangular holes with a length greater than the height, and the second ventilation holes (181) arranged at both sides of the partition (400) are rectangular holes with a length less than the height.

13. The oven according to claim 1, characterized in that: The oven further comprises a heat dissipation fan (510), a centrifugal air duct (520) and an exhaust box (530); the heat dissipation fan (510) is arranged between the wind wheel (300) and the drive motor (200); the exhaust box (530) is arranged on the top of the housing (100); and the centrifugal air duct (520) connects the heat dissipation fan (510) and the exhaust box (530).

14. A steam oven, characterized in that: It comprises the oven according to any one of claims 1 to 13, a steam generator (600) and a water tank (700), wherein the water tank (700) is detachably arranged on the side wall of the box body (100), the steam generator (600) is arranged in the second cavity (130), and the steam generator (600) is provided with a water inlet connected to the water tank (700) and a steam outlet connected to the first cavity (120).

15. The steam oven according to claim 14, characterized in that: A gripping portion (710) recessed into the interior of the water tank (700) is provided on a side of the water tank (700) away from the box body (100); the gripping portion (710) comprises an arc segment (711) and a straight segment (712); both ends of the arc segment (711) are connected to the straight segment (712); and the straight segment (712) is arranged obliquely to the side wall of the water tank (700).

16. The steam oven according to claim 14, characterized in that: An evaporation tray (150) is provided at the bottom of the first cavity (120); the bottom of the first cavity (120) is inclined toward the evaporation tray (150); and a heating pipe is provided at the bottom of the evaporation tray (150).

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