Cavity assembly and steaming oven thereof

Abstract

The utility model provides a cavity assembly and a steaming oven thereof, and the cavity assembly comprises a cavity which comprises a cooking cavity, a top plate, a left side plate and a right side plate; the top plate comprises a first air inlet and a first air return port; the left side plate comprises a second air return port; the right side plate comprises a third return air inlet; an air return cavity; the gas can form a first gas flow and a second gas flow; the cavity assembly carries out the first air flow in the first heating mode and carries out the first air flow and the second air flow at the same time in the second heating mode. According to the steam oven, the first heating mode or the second heating mode can be selected through the cavity, so that the steam oven has multiple heating modes. Moreover, in the second heating mode, the cavity can simultaneously perform two heating modes on the first air flow and the second air flow, so that the steaming oven can simultaneously perform multiple heating modes at the same time, and the heating effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a cavity component and a steam oven thereof. Background Art

[0002] A steam oven is a household appliance that can heat and bake food using steam.

[0003] For example, in the Chinese patent document with publication number CN114052527B, a steam oven is disclosed, which includes an appliance body, a cavity, a flow guide device, a fan, a heating element, and a controller. When the fan is operating at a higher speed, a large amount of heat at the heating element is taken away by the fan, passes through the return air cavity, and flows to the cooking cavity through the second opening, where it exchanges heat with the food in a stable low heat flux density manner in the form of hot air circulation. Alternatively, when the fan is operating at a lower speed, the heat generated by the heating element is radiated in a high heat flux density manner and transferred to the food in the cooking cavity through the first opening to cook the food. However, such an arrangement of the gas inlet and outlet on the cavity makes the heating mode of the steam oven single and the heating effect is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a cavity assembly and a steam oven thereof, aiming to solve the above-mentioned problems of single heating mode and poor heating effect.

[0005] In order to achieve the above-mentioned objectives, the present application provides, in a first aspect, a cavity assembly for a cooking utensil, comprising:

[0006] The cavity comprises a top plate, a left side plate, and a right side plate; the top plate is provided with a first air inlet and a first air return port; the left side plate is provided with a second air return port; and the right side plate is provided with a third air return port;

[0007] The cavity also includes a cooking cavity;

[0008] a return air chamber, the return air chamber being in communication with the cooking chamber via the first air inlet and the first return air port, and the return air chamber being in communication with the cooking chamber via the second return air port and the third return air port;

[0009] in,

[0010] The gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the first return air inlet to form a first airflow;

[0011] The gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the second return air inlet and / or the third return air inlet to form a second airflow;

[0012] The cooking appliance has at least two heating modes. In a first heating mode, there is a first airflow in the cavity assembly; in a second heating mode, there are the first airflow and the second airflow in the cavity assembly at the same time.

[0013] Compared to the prior art, the present application provides a cooking cavity, a first air inlet, a return air cavity, and a first return air cavity, so that the gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the first return air cavity, forming a first airflow. By providing a cooking cavity, a first air inlet, a return air cavity, a second return air cavity, and a third return air cavity, the gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the second and / or third return air cavity, forming a second airflow. The cavity can carry the first airflow, or the first and second airflows simultaneously, allowing the steam oven to have multiple heating modes. Furthermore, in the second heating mode, the cavity can simultaneously carry out two heating methods for the first and second airflows, allowing the steam oven to carry out multiple heating methods simultaneously, resulting in a better heating effect.

[0014] In some embodiments, the cavity assembly further includes a control assembly, which includes a baffle, wherein the baffle is located in the return air cavity and can rotate relative to the return air cavity to adjust the flow cross-sectional area of ​​the second airflow.

[0015] By setting a baffle on the control assembly, the cross-sectional area of ​​the second airflow can be adjusted, enabling the cavity assembly to operate in both the first and second heating modes. Furthermore, by controlling the cross-sectional area, the intensity of the second airflow can be controlled, thereby adding more heating modes.

[0016] In some embodiments, when the baffle rotates to a cross-sectional area of ​​the second airflow is zero, the cooking appliance is in a first heating mode; when the baffle rotates to a cross-sectional area of ​​the second airflow is not zero, the cooking appliance is in a second heating mode.

[0017] By setting the rotation mode of the baffle, the cooking appliance can be controlled to be in the first heating mode or the second heating mode.

[0018] In some embodiments, the cavity assembly further includes an air frying assembly, and the air frying assembly includes a centrifugal fan blade and a first heating tube;

[0019] The centrifugal fan blades and the first heating tube are located in the return air chamber;

[0020] The rotation of the centrifugal fan blades can draw the gas in the cooking cavity into the return air cavity through the first air inlet; and the centrifugal fan blades can centrifugally push part of the gas to the first return air inlet so that the first airflow can form air frying heating.

[0021] By setting centrifugal fan blades, the centrifugal fan can inhale or centrifugally push gas, so that the cavity component can form a first airflow, and a first heating tube is set, so that the first airflow can form air frying heating.

[0022] In some embodiments, the centrifugal fan blades can also centrifugally push part of the air to the second and / or third return air outlets, so that the second airflow can form a forced convection circulation heating.

[0023] By providing centrifugal fan blades, part of the gas can be centrifugally pushed to the second and / or third return air outlets, so that the cavity assembly can form a second airflow, and the second airflow can form forced convection circulation heating.

[0024] In some embodiments, the cavity assembly further includes a baking tray that is detachably placed in the cavity to divide the cooking cavity into at least two layers.

[0025] By providing a baking tray, the cooking cavity can be divided into at least two layers, so that different layers of the cooking cavity can be heated. The user can freely select the space to be heated, further increasing the heating modes.

[0026] In some embodiments, the cavity further includes a back plate, on which a convection component is disposed, and the convection component can form convection wind on the upper layer and / or lower layer of the cooking cavity.

[0027] By arranging a convection component on the back plate, the convection component can form convection wind on the upper layer and / or lower layer of the cooking cavity, thereby increasing the paths for gas circulation and further increasing the heating modes.

[0028] In some embodiments, the return air cavity is surrounded by an air duct, and the air duct includes a first section of the air duct, and the first section of the air duct is connected to the first air inlet and the first return air outlet.

[0029] The return air cavity is surrounded by an air duct, and the air duct includes a first section of the air duct, and the first section of the air duct is connected to the first air inlet and the first return air outlet, so as to form a gas movement channel for the first air flow outside the cavity.

[0030] In some embodiments, the air duct includes a second section of air duct and a third section of air duct;

[0031] The first and last ends of the second air duct are connected to one end of the first air duct and the second return air outlet respectively, and the first and last ends of the third air duct are connected to the other end of the first air duct and the third return air outlet respectively.

[0032] By setting up a second section of the air duct and a third section of the air duct, and the second section of the air duct is connected at its head and tail to one end of the first section of the air duct and the second return air outlet respectively, and the third section of the air duct is connected at its head and tail to the other end of the first section of the air duct and the third return air outlet respectively, the gas in the first section of the air duct can move to the second and third return air outlets through the second and third sections of the air duct, so as to form a gas movement channel for the second air flow outside the cavity.

[0033] Furthermore, the first section of the air duct is an air hood, which is installed on the upper surface of the top plate, and the air hood covers the first air inlet and the first air return outlet on the top plate.

[0034] By setting up a wind hood and covering the first air inlet and the first air return outlet, the first section of the air duct becomes a hood shape, which controls the gas flow, prevents the irregular diffusion of the gas, and optimizes the gas flow direction.

[0035] Furthermore, the top plate is located on the first plane, and the top plate includes an inner recess;

[0036] The inner concave portion is formed by the top plate being partially concave downward relative to the first plane, and the first air inlet and the first air return outlet are located in the inner concave portion;

[0037] The plane where the first air return outlet is located is arranged at an angle to the first plane.

[0038] By setting an inner recess and the plane where the first return air outlet is located is set at an angle to the first plane, the gas returning to the cooking cavity from the first return air outlet can touch the side wall of the cavity, thereby increasing the path length of the gas circulation and improving the heating effect of the gas circulation.

[0039] Furthermore, the return air cavity also includes a second heating tube, which is located in the return air cavity and arranged on the second airflow.

[0040] By arranging a second heating tube on the second air flow, the gas entering the cooking cavity from the second and third return air ports can be heated, and the heating effect is further improved.

[0041] The present application also provides a steam oven, which includes the cavity assembly described in any one of the above embodiments.

[0042] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a three-dimensional schematic diagram of the steam oven in Example 1;

[0044] Figure 2 is a schematic structural diagram of the cavity in this embodiment 1;

[0045] Figure 3 This is a schematic diagram of the structure of the first air inlet, the first, second, and third air return outlets in this embodiment 1;

[0046] Figure 4 This is a schematic diagram of the steam oven in Example 1;

[0047] Figure 5 is a schematic diagram of the structure of the control component in this embodiment 1;

[0048] Figure 6 is a schematic diagram of the structure of the control component in this embodiment 1;

[0049] Figure 7 Schematic diagram of the structure of the heating tube of the steam oven in Example 1;

[0050] Figure 8 Schematic diagram of the structure of the steam oven in Example 2;

[0051] Figure 9 Schematic diagram of the structure of the steam oven in Example 3;

[0052] Figure 10 Schematic diagram of the structure of the steam oven in this embodiment 4.

[0053] Description of reference numerals:

[0054] 1 cavity, 11 top plate, 111 first air inlet, 112 first return air outlet, 113 inner recess, 1131 inner recessed side surface, 1132 inner recessed bottom surface, 12 left side plate, 121 second return air outlet, 1211 through hole, 122 protrusion, 13 right side plate, 131 third return air outlet, 1311 through hole, 132 protrusion, 14 back plate, 15 cooking cavity;

[0055] 2 return air cavity, 21 first section air duct, 211 return air cavity air inlet, 212 air hood top surface, 213 air hood side surface, 22 second section air duct, 23 third section air duct;

[0056] 3 control component, 31 baffle, 32 motor;

[0057] 4 air frying assembly, 41 motor, 42 centrifugal fan blade, 43 first heating tube;

[0058] 5. Second heating tube; 6. Baking tray; 7. Convection component.

[0059] A is the first plane, a1 is the angle between the concave side surface and the concave bottom surface, and a2 is the angle between the top surface of the wind shield and the side surface of the wind shield. DETAILED DESCRIPTION

[0060] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0061] It should be clear that the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0062] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present application. The singular forms "a," "the," and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0063] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0064] In addition, in this application, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0065] A steam oven is a kitchen appliance that combines steam heating and baking. A steam oven can use the aforementioned heating methods simultaneously. Other heating methods include heating gas, which circulates within the oven cavity, allowing the gas to contact the food to achieve a heating effect, such as air frying or forced convection heating. However, existing technologies often employ a single heating mode within the cavity, preventing multiple heating methods from being implemented. Alternatively, the gas circulation path within the cavity is single, preventing multiple gas circulation heating methods from being implemented simultaneously.

[0066] To this end, the present application provides a cavity assembly and a steam oven thereof, the structure of which can effectively improve the above-mentioned problems. Specific embodiments will be provided below to illustrate.

[0067] Example 1:

[0068] A steam oven comprises a cavity component, a microwave component and a steam component.

[0069] like Figure 1 As shown, the cavity assembly includes a cavity 1, a return air cavity 2, a control assembly 3, an air frying assembly 4, a second heating tube 5, a baking tray 6, and a convection assembly 7.

[0070] like Figure 2 As shown, specifically, the cavity 1 is a cavity for heating food, which includes a top plate 11, a left side plate 12, a right side plate 13, a back plate 14, a bottom plate, and a front plate. The top plate 11 is located at the top of the cavity 1, with the left portion of the top plate 11 connected to the left side plate 12, and the right portion of the top plate 11 connected to the right side plate 13. Specifically, the top plate 11, the left side plate 12, the right side plate 13, the back plate 14, the bottom plate, and the front plate (not shown) are all rectangular and together form the cavity 1.

[0071] The cavity 1 further includes a cooking cavity 15 for heating food.

[0072] like Figure 3 As shown, the top plate 11 is provided with a first air inlet 111 and a first air return outlet 112. For example, the top plate 11 is square, the first air inlet 111 is a circular through hole in the center of the top plate 11, and the first return air outlet 112 is a square through hole. It should be understood that the first air inlet 111 and the first return air outlet 112 can also be other shapes, such as circular, rectangular, irregular, etc. Of course, the first air inlet 111 and the first return air outlet 112 can also be holes composed of multiple through holes. Specifically, the first air inlet 111 is a plurality of densely distributed circular through holes, and the plurality of circular through holes are arranged in a circular shape, thereby forming the first air inlet 111; the first air inlet 111 is a plurality of densely distributed circular through holes, and the plurality of circular through holes are arranged in a square shape, thereby forming the first air inlet 111.

[0073] Among them, the first air inlet 111 is located in the center of the top plate 11, and the two first return air outlets 112 are respectively located on both sides of the first air inlet 111. It should be understood that the number of first return air outlets 112 can be increased. For example, in some embodiments, there are two first return air outlets 112 on each side of the left and right sides of the first air inlet 111. In this embodiment, the number of first return air outlets 112 is 4, which are respectively located on the diagonal lines of the top plate 11 in a cross shape, so that the gas at the corners of the cavity 1 can also be circulated, thereby improving the heating effect. The first air inlet 111 and the first return air outlet 112 of this embodiment are arranged in this way to facilitate air frying heating.

[0074] The left side plate 12 is provided with a second air return port 121. For example, the second air return port 121 is located in the middle of the bottom of the left side plate 12 and is composed of a plurality of circular through holes.

[0075] The right side panel 13 is provided with a third return air vent 131. Specifically, the right side panel 13 is symmetrically arranged with the left side panel 12. It should be understood that in other embodiments, the number and position of the second and third return air vents 121, 131 can be adjusted to meet specific requirements in order to form a wind flow at a specific location. For example, the number of second return air vents 121 on the left side panel 12 can be two, located on both sides of the bottom of the left side panel 12.

[0076] like Figure 3 As shown, preferably, the second return air outlet 121 and the third return air outlet 131 are multiple through holes 1211 and 1311 closely arranged on the left plate 12 and the right plate 13. The second return air outlet 121 composed of multiple through holes 1211 and 1311 is a rectangle with a length to height ratio of 4 to 1. Specifically, the second return air outlet 121 can be at a certain distance from the bottom plate of the cavity 1 so that the gas entering the cavity 1 can come into contact with the food rather than the plate on which the food is placed. The height of the second return air outlet 121 can be one-third of the height of the left plate 12, so that the gas can slowly enter the cavity 1 and fully come into contact with the food. The number of the through holes 1211 and 1311 increases in sequence from high to low. The through holes 1211 and 1311 of this embodiment are arranged in this way so that the air outlet is slower and forced convection heating is easily formed.

[0077] like Figure 4 As shown, specifically, the return air chamber 2 is connected to the cooking chamber 15 through the first air inlet 111 and the first return air port 112, and the return air chamber 2 is also connected to the cooking chamber 15 through the second return air port 121 and the third return air port 131.

[0078] The gas within the cooking cavity 15 can enter the return air cavity 2 through the first air inlet 111, and the gas within the return air cavity 2 can return to the cooking cavity 15 through the first return air inlet 111, thereby forming a first airflow. Specifically, the gas within the cooking cavity 15 can be discharged from the cavity 1 through the first air inlet 111, and the gas within the cavity 1 decreases. At this time, the gas within the return air cavity 2 will enter the cooking cavity 15 to replenish the reduced gas. That is, the gas within the return air cavity 2 can return to the cavity 1 through the first return air inlet 112, thereby forming an airflow. The gas is discharged from the cooking cavity 15 through the first air inlet 111 and re-enters the cavity 1 through the first return air inlet 112, forming the first airflow.

[0079] The gas within the cooking cavity 15 can enter the return air cavity 2 through the first air inlet 111, and the gas within the return air cavity 2 can return to the cooking cavity 15 through the second return air inlet 121 and / or the third return air inlet 131 to form a second airflow. Specifically, the gas within the cooking cavity 15 enters the return air cavity 2 through the first return air inlet 111, and the gas within the return air cavity 2 returns to the cavity 1 through the second and / or third return air inlets 121 and 131 to replenish the reduced gas and form a second airflow. For example, the gas can enter the cavity 1 only through the second return air inlet 121 to form the second airflow; or the gas can enter the cavity 1 only through the third return air inlet 131 to form the second airflow; or the gas can enter the cavity 1 through the second return air inlet 121 and the third return air inlet 31 to form the second airflow.

[0080] At this time, the path of the first airflow does not conflict with the path of the second airflow, so that the cavity 1 can perform different heating modes on different airflows.

[0081] The steam oven has at least two heating modes. In the first heating mode, a first airflow flows within the cavity assembly; in the second heating mode, the first and second airflows flow simultaneously within the cavity assembly. Preferably, the first airflow is suitable for air frying, and the second airflow is suitable for forced convection circulation heating. In this embodiment, the first heating mode is an air frying mode, and the second heating mode is an air frying and forced convection circulation heating mode. In the first heating mode, the top of the food is air-fried, becoming crispy. In the second heating mode, the top of the food is air-fried, resulting in a crispy top; while the bottom of the food is heated by forced convection circulation, retaining moisture and making the bottom of the food tender and juicy. Of course, in other embodiments, the first and second airflows can also use other heating modes, such as both using forced convection circulation heating or both using air frying, in which case the corresponding air outlet and air inlet apertures can be adjusted accordingly.

[0082] like Figure 4 As shown, specifically, the return air chamber 2 is surrounded by air ducts, which include a first section of air duct 21 , a second section of air duct 22 , and a third section of air duct 23 .

[0083] Among them, the first section of the air duct 21 is connected to the first air inlet 111 and the first return air outlet 112 to form a gas movement channel for the first air flow outside the cavity 1. Specifically, the first section of the air duct 21 is located above the top plate 11, and the first section of the air duct 21 completely covers the upper surface of the top plate 11, so that the gas entering and exiting the first air inlet 111 and the first return air outlet 112 can circulate in the first section of the air duct 21. In some embodiments, the first section of the air duct 21 can also be an angled cover plate, which covers the first air inlet 111 and the first return air outlet 112, and the angled inner wall of the cover plate can reflect the gas discharged from the first air inlet 111, thereby optimizing the gas flow path. Of course, a motor and fan blades can also be installed in the first section of the air duct 21 to drive the gas movement in the return air cavity 2.

[0084] The second air duct section 22 is connected at its ends to one end of the first air duct section 21 and the second air return port 121. Specifically, the second air duct section 22 is a hollow channel. In this embodiment, a portion of the channel housing of the second air duct section 22 can also be formed by the left side panel 12, allowing the second air duct section 22 to be directly embedded in the cavity 1.

[0085] The third air duct 23 is connected at its end to the other end of the first air duct 21 and the third air return port 131. Specifically, the third air duct 23 is symmetrically arranged with the second air duct 22. The second and third air ducts 22, 23 cooperate with the first air duct 21 to form a gas flow channel for a second air flow outside the cavity 1.

[0086] Specifically, the control component 3 can control the on or off of the movement of the second airflow, thereby realizing a variety of heating modes of the steam oven. In this embodiment, the control component 3 includes a baffle 31, and the baffle 31 is located in the return air chamber 2. The baffle 31 can rotate relative to the return air chamber 2 to adjust the flow cross-sectional area of ​​the second airflow. Specifically, the control component 3 also includes a motor 32, and the rotation of the motor 32 drives the transmission mechanism, and the transmission mechanism enables the baffle 31 to open or close the return air chamber 2. For example, the transmission mechanism is a belt or a gear. In this embodiment, two types of control components 3 are provided, such as Figure 5 、 Figure 6As shown, first, a baffle 31 is provided at the bend of the return air chamber 2, with the fixed axis of the baffle 31 placed horizontally. The baffle 31 can rotate up and down around the fixed axis, thereby adjusting the flow cross-sectional area in the return air chamber 2. Second, a baffle 31 is provided at the bend of the return air chamber 2, with the fixed axis of the baffle 31 placed vertically. The baffle 31 can rotate left and right around the fixed axis, thereby adjusting the flow cross-sectional area in the return air chamber 2.

[0087] Preferably, when the baffle 31 rotates until the cross-sectional area of ​​the second airflow is zero, the steam oven is in the first heating mode; and when the baffle 31 rotates until the cross-sectional area of ​​the second airflow is non-zero, the steam oven is in the second heating mode. In this embodiment, the control component 3 is capable of controlling the opening and closing of the second and third air ducts 22, 23, that is, controlling the cross-sectional area of ​​the second airflow. For example, the control component 3 closes the second section air duct 22 and the third section air duct 23, thereby performing air frying heating, that is, the steam oven is in the first heating mode; or the control component 3 opens the second section air duct 22 and closes the third section air duct 23, thereby performing air frying heating and forced convection heating on the left side of the bottom of the cooking cavity 15, that is, the steam oven is in the second heating mode; or the control component 3 closes the second section air duct 22 and opens the third section air duct 23, thereby performing air frying heating and forced convection heating on the right side of the bottom of the cooking cavity 15, that is, the steam oven is in the second heating mode; or the control component 3 opens the second section air duct 22 and the third section air duct 23 at the same time, thereby performing air frying heating and forced convection heating on the bottom of the cooking cavity 15, that is, the steam oven is in the second heating mode.

[0088] Preferably, the control assembly 3 is capable of controlling the rotation angle of the baffle 31 based on parameters within the cooking cavity 15, thereby adjusting the cross-sectional area of ​​the second airflow. Preferably, the cavity assembly further includes a temperature sensor disposed within the cooking cavity 15 for detecting the temperature of the cooking cavity 15. The control assembly 3 can adjust the cross-sectional area of ​​the second airflow based on the temperature parameters provided by the temperature sensor. For example, when the temperature at the bottom of the cooking cavity 15 is too high, the baffle 31 can be closed; when the temperature on the left side of the bottom of the cooking cavity 15 is too high, only the baffle 31 located in the second air duct 22 can be closed. The steam oven can then select a corresponding heating mode based on the temperature, resulting in better heating of food.

[0089] It should be understood that the baffle 31 can be placed in the first section of the air duct 21 to directly block the gas in the first section of the air duct 21 from entering the second section of the air duct 22 and the third section of the air duct 23, or it can be placed in the second section of the air duct 22 and the third section of the air duct 23 to block the flow of gas in the second section of the air duct 22 and the third section of the air duct 23.

[0090] In this embodiment, the baffle 31 is located at the bend of the return air chamber 32. When the baffle 31 is rotated to the open position, the flow cross-sectional area of ​​the second airflow is the largest; when the baffle 31 is rotated at an angle, the flow cross-sectional area of ​​the second airflow becomes smaller, and the heating effect at the bottom of the cooking chamber 15 becomes worse; when the baffle 31 is rotated to the closed position, the flow cross-sectional area of ​​the second airflow is zero. At this time, no gas enters the cavity 1 through the second return air port 121 and the third return air port 131, and there is no heating effect at the bottom of the cooking chamber 15.

[0091] like Figure 4 As shown, specifically, an air frying assembly 4 is capable of driving the air flow in the return air chamber 2 and the cooking chamber 15. The air frying assembly 4 includes a motor 41, a centrifugal fan 42, and a first heating tube 43. Specifically, the air frying assembly 4 is located above the cavity 1.

[0092] The motor 41 is located outside the return air chamber 2. The motor shaft of the motor 41 extends through the housing of the return air chamber 2 and into the return air chamber 2, so that the motor 41 is connected to the centrifugal fan blades 42 located within the return air chamber 2. The motor 41 can be a shaded-pole motor. In some embodiments, the motor 41 can also be directly installed in the return air chamber 2.

[0093] The centrifugal fan blades 42 are located within the return air chamber 2. Specifically, the centrifugal fan blades 42 are located above the first air inlet 111. The shaft of the centrifugal fan blades 42 is connected to the motor shaft, and rotation of the motor shaft drives the centrifugal fan blades 42 to rotate. The rotation of the centrifugal fan blades 42 can draw gas from the cooking chamber 15 into the return air chamber 2 through the first air inlet 111. Furthermore, the centrifugal fan blades 42 can centrifugally push a portion of the gas to the first return air inlet 112, enabling the first airflow to form air frying heating. For example, the centrifugal fan blades 42 can draw gas below the centrifugal fan blades 42 and centrifugally push the gas to the left and right sides of the blades 32. Furthermore, the rotation of the centrifugal fan blades 42 can transport gas from the cavity 1 into the return air chamber 2 through the first air inlet 111 in the center of the top plate 11. Furthermore, the rotation of the centrifugal fan blades 42 can transport a portion of the gas from the return air chamber 2 into the cavity 1 through the four first return air inlets 112 on the diagonal of the top plate 11, thereby forming an air frying heating mode. It should be understood that the height of the centrifugal blades 42 can be adjusted up and down, thereby adjusting the movement path of the gas.

[0094] Preferably, the speed of the centrifugal fan blades 42 can be adjusted to add more heating modes. For example, the speed can be increased to achieve a better air frying effect; the speed can be reduced to achieve a forced convection heating effect; or the centrifugal fan blades 42 can be stopped to achieve a heating mode in which the first heating tube 43 directly bakes the food.

[0095] The centrifugal fan blades 42 can also centrifugally push a portion of the air to the second and / or third return air ports 121 and 131, thereby enabling the second airflow to form a forced convection circulation heating. For example, the centrifugal fan blades 42 centrifugally transport the air to the end of the return air chamber 2, and the air enters the cooking chamber 15 through the second and third return air ports 121 and 131 at the end of the return air chamber 2.

[0096] The first heating tube 43 provides heat to the return air chamber 2. Specifically, it is located between the centrifugal blades 42 and the first air inlet 111. The first heating tube 43 is a double-circle coiled heating tube. The air flow rate is slow below the centrifugal blades 42, which prolongs the time the air is heated by the first heating tube 43, achieving a better heating effect.

[0097] Specifically, such as Figure 4 、 Figure 7 As shown, to heat the gas in the second airflow and achieve a better heating effect, a second heating tube 5 is provided within the return air chamber 2 and positioned above the second airflow. Preferably, the second heating tube 5 is positioned within the second and third air duct sections 22 and 23 of the return air chamber 2, and is positioned near the second and third return air ports. The second heating tube 5 can heat the air within the return air chamber 2, improving the heating effect of food. In this embodiment, the coiled shape of the second heating tube 5 is rectangular and is installed near the plurality of through-holes 1211 and 1311. In other embodiments, the shape of the second heating tube 5 can also match the shape of the second and third return air ports. For example, if the second and third return air ports are trapezoidal, the coiled shape of the second heating tube 5 can also be trapezoidal. Because the gas flow rate at the second and third return air ports is slow, the gas can remain in contact with the second heating tube 5 for a longer period of time, achieving a better heating effect and heating the gas entering the cavity 1.

[0098] Specifically, such as Figure 4As shown, a removable baking tray 6 is placed within the cavity 1 to divide the cooking cavity 15 into at least two levels, thereby increasing the heating modes of the steam oven. For example, the inner surfaces of the left and right panels 12, 13 further include protrusions 122, 132, on which the baking tray 6 is removably placed. In this embodiment, the inner surfaces of the left and right panels 12, 13 further include horizontal protrusions 122, 132, on which the baking tray 6 is removably placed, thereby dividing the cavity 1 into upper and lower levels. Specifically, a gap may exist between the baking tray 6 and the left and right panels 12, 13, front and back panels 14 of the cavity 1. In other embodiments, a sealing rubber ring may be provided around the perimeter of the baking tray 6 to eliminate gaps between the left and right panels 12, 13, front and back panels 14 of the cavity 1, thereby dividing the cavity 1 into independent upper and lower levels. After the steam oven is added with the baking tray 6, the heating modes become more diverse. Specifically, the upper layer of the cavity 1 can perform air frying mode independently, and the lower layer of the cavity 1 can perform forced convection circulation heating independently. In some embodiments, a steam component is also provided at the bottom of the steam oven, and the lower layer of the cavity 1 can also perform forced convection circulation heating and steam heating. In some other embodiments, multiple baking trays 6 can be placed. For example, there are two baking trays 6, and the baking trays 6 divide the cooking cavity 15 into three layers. Each corresponding layer can be additionally provided with a second return air port 121 and a third return air port 131 to enable the second heating mode.

[0099] Specifically, the convection assembly 7 can provide additional convection air for the cavity 1. It is disposed on the back plate 14 of the cavity 1 and can generate convection air for the upper and / or lower layers of the cooking cavity 15. For example, the convection assembly 7 includes a motor and centrifugal blades, i.e., a motor and a centrifugal blade are each disposed on the upper and lower portions of the back plate 14. When the motor drives the centrifugal blades to rotate, convection air can be generated for both the upper and lower layers of the cavity. This structure allows the cavity assembly to provide a wider range of heating options. For example, the upper layer of the cooking cavity can be cooked using convection air alone, the lower layer can be cooked using convection air alone, or both the upper and lower layers of the cooking cavity can be cooked using convection air simultaneously.

[0100] Specifically, the steam oven may also include a steam assembly that provides steam heating within the cavity. For example, steam inlets are located at the bottom of the left and right panels 12 and 13, allowing steam to enter the cavity 1 and heat the food. When a baking tray is placed within the steam oven, the upper layer of the cavity 1 can operate in air frying mode, while the lower layer can operate in forced convection circulation mode and steam heating mode, providing a wider range of heating modes and improved heating performance.

[0101] Specifically, the steam oven may further include a microwave component, which can perform microwave heating on the cavity.

[0102] Example 2:

[0103] like Figure 8 As shown, a steam oven includes a cavity component, a microwave component, and a steam component.

[0104] The cavity assembly includes a cavity 1, a return air cavity 2, a control assembly 3, an air frying assembly 4, a second heating tube 5, a baking tray 6, a convection assembly 7, a microwave assembly, and a steam assembly.

[0105] The cavity 1 includes a top panel 11, a left side panel 12, a right side panel 13, a back panel 14, a bottom panel, a front panel, and a cooking cavity 15. The top panel 11 includes a first air inlet 111 and a first air return port 112. The left side panel 12 includes a second air return port 121, and the right side panel 13 includes a third air return port 131.

[0106] On the basis of Example 1, preferably, the top plate 11 is located on the first plane A, and the top plate 11 includes an inner recess 113; the inner recess 113 is formed by the top plate 11 being partially recessed relative to the first plane A, and the first air inlet 111 and the first return air outlet 112 are located in the inner recess 113. The plane where the first return air outlet 111 is located is set at an angle to the first plane A. Specifically, there is a rectangular surface on the top plate 11, and the first air inlet 111 and the first return air outlet 112 are both located in the rectangular surface, and the rectangular surface is recessed vertically downward to form the inner recess 113. Gas can enter and exit the cavity 1 from the rectangular surface. It should be understood that the first return air outlet 112 can be set on the side wall of the inner recess 113.

[0107] Furthermore, the inner concave portion 113 includes an inner concave side surface 1131 and an inner concave bottom surface 1132 .

[0108] The concave bottom surface 1132 is located at the lowest part of the concave portion 113 , and is parallel to the first plane A.

[0109] Among them, the concave side surface 1131 is connected to the top plate 11 located on the first plane A at one end, and connected to the concave bottom surface 1132 at the other end. The angle a1 between the concave bottom surface 1132 and the concave side surface 1131 is an obtuse angle; the first return air port 112 is located on the concave side surface 1131, and the first air inlet 111 is located on the concave bottom surface 1132. The angle a1 between the concave bottom surface 1132 and the concave side surface 1131 is 135 degrees. Part of the gas blown out from the centrifugal fan blades 42 can move vertically to the concave side surface 1131 and enter the cavity 1; part of the gas can move upward along the concave side surface 1131 to the second section of the air duct 22. This structure can effectively improve the gas circulation path. It should be understood that the angle a1 between the concave bottom surface 1132 and the concave side surface 1131 can also be an acute angle.

[0110] The return air chamber 2 is surrounded by air ducts, which include a first section of air duct 21, a second section of air duct 22, and a third section of air duct 23. The first section of air duct 21 is located above the top plate 11, the second section of air duct 22 is located on the left side of the left side plate 12, and the third section of air duct 23 is located on the right side of the right side plate 13.

[0111] The control component 3 is located in the return air chamber 2 and includes a baffle 31. The control component 3 can control the flow of gas in the return air chamber 2.

[0112] The air frying assembly 4 is arranged above the top plate 11 and includes a motor 41, a centrifugal fan 42, and a first heating tube 43. The height of the centrifugal fan 42 can be adjusted up and down to adjust the movement path of the gas.

[0113] The second heating tube 5 is located in the second section air duct 22 and the third section air duct 23 .

[0114] The baking tray 6 is detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0115] The convection component 7 is arranged on the back plate 14 of the cavity 1 and can provide additional convection wind for the cavity 1 .

[0116] A steam component can heat the cavity with steam.

[0117] A microwave component can perform microwave heating on the cavity.

[0118] Example 3:

[0119] like Figure 9 As shown, a steam oven includes a cavity component, a microwave component, and a steam component.

[0120] The cavity assembly includes a cavity 1, a return air cavity 2, a control assembly 3, an air frying assembly 4, a second heating tube 5, a baking tray 6, a convection assembly 7, a microwave assembly, and a steam assembly.

[0121] The cavity 1 includes a top panel 11, a left side panel 12, a right side panel 13, a back panel 14, a bottom panel, a front panel, and a cooking cavity 15. The top panel 11 includes a first air inlet 111 and a first air return port 112. The left side panel 12 includes a second air return port 121, and the right side panel 13 includes a third air return port 131.

[0122] The return air chamber 2 is surrounded by air ducts, which include a first section of air duct 21, a second section of air duct 22, and a third section of air duct 23. The first section of air duct 21 is located above the top plate 11, the second section of air duct 22 is located on the left side of the left side plate 12, and the third section of air duct 23 is located on the right side of the right side plate 13.

[0123] Based on Example 1, preferably, the first section of the air duct 21 is a hood mounted on the upper surface of the top plate 11, and the hood covers the first air inlet 111 and the first air return port 121 on the top plate 11. Specifically, the first section of the air duct 21 includes a hood top surface 212 and hood side surfaces 213. The first section of the air duct 21 is formed by the hood top surface 212 and the hood side surfaces 213.

[0124] The air cover top surface 212 is located above the top plate 11 and is parallel to the top plate 11. Specifically, it is a square plane.

[0125] The hood side surface 213 has one end connected to the upper surface of the top plate 11, forming a closed curve at the connection to form the return air chamber inlet 211. The other end of the hood side surface 213 is connected to the hood top surface 212. The angle a2 between the hood side surface 213 and the hood top surface 212 is an obtuse angle. The hood side surface 213 is also provided with a hole, and the second and third sections of the air duct 22 and 23 are connected to the hole. Specifically, the angle a2 between the hood side surface 213 and the hood top surface 212 is 135 degrees. When the centrifugal fan blades 42 centrifugal gas touches the hood top surface 212, it is divided into left and right parts and moves toward the hood side surface 213. When the air moves to the side 213 of the hood, some of the air is reflected by the hood side 213 onto the top plate 11 and enters the cavity 1 through the first return air port 112. Some of the air enters the second and third air ducts 22 and 23 through the holes in the hood side 213. This hood effectively improves the air circulation path and further enhances the heating effect.

[0126] The control component 3 is located in the return air chamber 2 and includes a baffle 31. The control component 3 can control the flow of gas in the return air chamber 2.

[0127] The air frying assembly 4 is disposed above the top plate 11 . The air frying assembly 4 includes a motor 41 , centrifugal blades 42 , and a first heating tube 43 .

[0128] The second heating tube 5 is located in the second section air duct 22 and the third section air duct 23 .

[0129] The baking tray 6 is detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0130] The convection component 7 is arranged on the back plate 14 of the cavity 1 and can provide additional convection wind for the cavity 1 .

[0131] A steam component can heat the cavity with steam.

[0132] A microwave component can perform microwave heating on the cavity.

[0133] Example 4:

[0134] like Figure 10 As shown, a steam oven includes a cavity component, a microwave component, and a steam component.

[0135] The cavity assembly includes a cavity 1, a return air cavity 2, a control assembly 3, an air frying assembly 4, a second heating tube 5, a baking tray 6, a convection assembly 7, a microwave assembly, and a steam assembly.

[0136] The cavity 1 includes a top panel 11, a left side panel 12, a right side panel 13, a back panel 14, a bottom panel, a front panel, and a cooking cavity 15. The top panel 11 includes a first air inlet 111 and a first air return port 112. The left side panel 12 includes a second air return port 121, and the right side panel 13 includes a third air return port 131.

[0137] On the basis of Example 1, preferably, the top plate 11 is located on the first plane A, and the top plate 11 includes an inner recess 113; the inner recess 113 is formed by the top plate 11 being concave downward relative to the first plane A, and the first air inlet 111 and the first return air outlet 112 are located in the inner recess 113; wherein, the plane where the first return air outlet 111 is located is set at an angle to the first plane A.

[0138] The return air chamber 2 is surrounded by air ducts, which include a first section of air duct 21, a second section of air duct 22, and a third section of air duct 23. The first section of air duct 21 is located above the top plate 11, the second section of air duct 22 is located on the left side of the left side plate 12, and the third section of air duct 23 is located on the right side of the right side plate 13.

[0139] Preferably, the first section of the air duct 21 is an air hood, which is installed on the upper surface of the top plate 11, and the air hood 11 covers the first air inlet 111 and the first air return port 112 on the top plate.

[0140] The control component 3 is located in the return air chamber 2 and includes a baffle 31. The control component 3 can control the flow of gas in the return air chamber 2.

[0141] The air frying assembly 4 is disposed above the top plate 11 . The air frying assembly 4 includes a motor 41 , centrifugal blades 42 , and a first heating tube 43 .

[0142] The second heating tube 5 is located in the second section air duct 22 and the third section air duct 23 .

[0143] The baking tray 6 is detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0144] The convection component 7 is arranged on the back plate 14 of the cavity 1 and can provide additional convection wind for the cavity 1 .

[0145] A steam component can heat the cavity with steam.

[0146] A microwave component can perform microwave heating on the cavity.

[0147] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. A cavity assembly for a cooking utensil, characterized in that: include: The cavity comprises a top plate, a left side plate, and a right side plate; the top plate is provided with a first air inlet and a first air return port; the left side plate is provided with a second air return port; and the right side plate is provided with a third air return port; The cavity also includes a cooking cavity; a return air chamber, the return air chamber being in communication with the cooking chamber via the first air inlet and the first return air port, and the return air chamber being in communication with the cooking chamber via the second return air port and the third return air port; in, The gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the first return air inlet to form a first airflow; The gas in the cooking cavity can enter the return air cavity through the first air inlet, and the gas in the return air cavity can return to the cooking cavity through the second return air inlet and / or the third return air inlet to form a second airflow; The cooking appliance has at least two heating modes. In a first heating mode, there is a first airflow in the cavity assembly; in a second heating mode, there are the first airflow and the second airflow in the cavity assembly at the same time.

2. The cavity assembly according to claim 1, characterized in that The cavity assembly further comprises: The control component includes a baffle, which is located in the return air cavity and can rotate relative to the return air cavity to adjust the flow cross-sectional area of ​​the second airflow.

3. The cavity assembly according to claim 2, wherein: When the baffle rotates until the cross-sectional area of ​​the second airflow is zero, the cooking appliance is in the first heating mode; when the baffle rotates until the cross-sectional area of ​​the second airflow is not zero, the cooking appliance is in the second heating mode.

4. The cavity assembly according to claim 1, wherein: The cavity assembly further comprises: An air frying assembly, comprising a centrifugal fan blade and a first heating tube; The centrifugal fan blades and the first heating tube are located in the return air chamber; The rotation of the centrifugal fan blades can draw the gas in the cooking cavity into the return air cavity through the first air inlet; and the centrifugal fan blades can centrifugally push part of the gas to the first return air inlet so that the first airflow can form air frying heating.

5. The cavity assembly according to claim 4, characterized in that: The centrifugal fan blades can also centrifugally push part of the air to the second and / or third return air outlets, so that the second airflow can form a forced convection circulation heating.

6. The cavity assembly according to claim 1, wherein: The cavity assembly further comprises a baking tray which is detachably placed in the cavity to divide the cooking cavity into at least two layers.

7. The cavity assembly according to claim 1, characterized in that: The cavity further comprises: A back plate is provided with a convection component, and the convection component can form convection wind on the upper layer and / or lower layer of the cooking cavity.

8. The cavity assembly according to claim 1, characterized in that: The return air cavity is surrounded by an air duct, and the air duct includes a first section of the air duct, and the first section of the air duct is connected to the first air inlet and the first return air outlet.

9. The cavity assembly according to claim 8, characterized in that: The air duct includes a second section of air duct and a third section of air duct; The first and last ends of the second air duct are connected to one end of the first air duct and the second return air outlet respectively, and the first and last ends of the third air duct are connected to the other end of the first air duct and the third return air outlet respectively.

10. The cavity assembly according to any one of claims 8 to 9, characterized in that: The first section of the air duct is an air hood, which is installed on the upper surface of the top plate, and covers the first air inlet and the first air return outlet on the top plate.

11. The cavity assembly according to any one of claims 1 to 9, characterized in that: The top plate is located in a first plane, and the top plate includes an inner concave portion; The inner concave portion is formed by the top plate being partially concave downward relative to the first plane, and the first air inlet and the first air return outlet are located in the inner concave portion; The plane where the first air return outlet is located is arranged at an angle to the first plane.

12. The cavity assembly according to any one of claims 1 to 9, characterized in that: The cavity assembly comprises: The second heating tube is located in the return air cavity and is arranged on the second air flow.

13. A steam oven, characterized in that Comprising the cavity assembly according to any one of claims 1-12.

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