Cavity assembly and steaming oven thereof

Abstract

The invention 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 invention relates to the technical field of kitchen appliances, and 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 a 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 working at a higher speed, a large amount of heat at the heating element is taken away by the fan, and after passing through the return air cavity, it flows to the cooking cavity through the second opening, and exchanges heat with the food in a stable low heat flux density manner in the form of hot air circulation, or when the fan is working at a lower speed, the heat generated by the heating element is radiated in a high heat flux density manner, and is transferred to the food in the cooking cavity through the first opening to cook the food. However, the 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. Summary of the invention

[0004] The object of the present invention 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 object, the present application provides a cavity assembly for a cooking utensil in a first aspect, comprising:

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

[0007] The cavity also includes a cooking cavity;

[0008] an air return chamber, the air return chamber being connected to the cooking chamber via the first air inlet and the first air return port, and the air return chamber being connected to the cooking chamber via the second air return port and the third air return 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 both the first airflow and the second airflow in the cavity assembly.

[0013] Compared with the prior art, the present application sets 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 returns to the cooking cavity through the first return air cavity to form a first airflow. By setting 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 returns to the cooking cavity through the second and / or third return air cavity to form a second airflow. The cavity can carry the first airflow, or the first and second airflows at the same time, so that the steam oven has multiple heating modes. Moreover, in the second heating mode, the cavity can carry out two heating methods on the first and second airflows at the same time, so that the steam oven can carry out multiple heating methods at the same time, and the heating effect is better.

[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 the baffle can rotate relative to the return air cavity to adjust the flow cross-sectional area of ​​the second airflow.

[0015] By setting the baffle of the control component, the cross-sectional area of ​​the second airflow can be adjusted, which makes it possible for the cavity component to perform the first and second heating modes respectively. And by controlling the cross-sectional area of ​​the second airflow, the intensity of the second airflow can be controlled to increase 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] Among them, the rotation of the centrifugal fan blades can suck 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 outlet, 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 assembly 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 gas to the second and / or third return air outlets, so that the second airflow can form 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, and 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, the gas circulation path is increased, and the heating mode is further increased.

[0028] In some embodiments, the return air chamber 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 that a gas movement channel for the first air flow can be formed outside the cavity.

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

[0031] The second air duct section is connected to one end of the first air duct section and the second air return outlet at its beginning and end, and the third air duct section is connected to the other end of the first air duct section and the third air return outlet at its beginning and end.

[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, 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, 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 to cover 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 gas from spreading irregularly, and optimizes the gas flow direction.

[0035] Further, the top plate is located on the first plane, and the top plate includes an inner concave portion;

[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 port are located in the inner concave portion;

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

[0038] By setting the inner recess and setting the plane where the first return air port is located at an angle to the first plane, the gas returning to the cooking cavity from the first return air port 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 chamber also includes a second heating tube, which is located in the return air chamber 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] For better understanding and implementation, 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 the present embodiment 1;

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

[0045] Figure 3 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 is a schematic diagram of the steam oven in Embodiment 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 is a schematic structural diagram of a heating tube of a steam oven in Embodiment 1;

[0050] Figure 8 is a schematic structural diagram of the steam oven in Embodiment 2;

[0051] Fig. 9 is a schematic structural diagram of the steam oven in Embodiment 3;

[0052] Fig.10 It is a schematic diagram of the structure of the steam oven in the fourth embodiment.

[0053] Description of reference numerals:

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

[0055] 2 return air cavity, 21 first section of air duct, 211 return air cavity air inlet, 212 top surface of air hood, 213 side surface of air hood, 22 second section of air duct, 23 third section of 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 inner concave side surface and the inner concave bottom surface, 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 described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without 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 only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" 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 other meanings. 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 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 attached 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 do not have to be 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 the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and 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 heating. The steam oven can use the above heating methods at the same time. Among them, the heating method of the steam oven also includes heating the gas, and the hot gas can circulate in the cavity of the steam oven. The gas circulation allows the gas to contact the food to achieve the heating effect, such as air frying heating and forced convection circulation heating. However, in the prior art, the heating mode of the cavity is single, and multiple heating methods cannot be realized, or the gas circulation path in the cavity is single, and multiple gas circulation heating methods cannot be realized at the same time.

[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 problem. Specific embodiments will be provided below for illustration.

[0067] Embodiment 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, the left part of the top plate 11 is connected to the left side plate 12, and the right part of the top plate 11 is 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, which together form the cavity 1.

[0071] The cavity 1 further comprises 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 port 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 air return port 112 is a square through hole. It should be understood that the first air inlet 111 and the first air return port 112 may also be other shapes, such as circular, rectangular, irregular, etc. Of course, the first air inlet 111 and the first air return port 112 may also be holes composed of a plurality of 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 at the central position of the top plate 11, and the two first air return ports 112 are respectively located on both sides of the first air inlet 111. It should be understood that the number of first air return ports 112 can be increased. For example, in some embodiments, there are two first air return ports 112 on the left and right sides of the first air inlet 111. In this embodiment, the number of first air return ports 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 air return port 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 plate 13 is provided with a third return air port 131. Specifically, the right side plate 13 is symmetrically arranged with the left side plate 12. It should be understood that in other embodiments, in order for the gas to form wind at a specific position, the number and position of the second return air port 121 and the third return air port 131 can be adjusted to meet the requirements. For example, the number of the second return air port 121 on the left side plate 12 can be two, which are arranged at both sides of the bottom of the left side plate 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 contact 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 contact the food. The number of the through holes 1211 and 1311 increases 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 in the cooking cavity 15 can enter the return air cavity 2 through the first air inlet 111, and the gas in the return air cavity 2 can return to the cooking cavity 15 through the first return air inlet 111 to form a first airflow. Specifically, the gas in the cooking cavity 15 can be discharged from the cavity 1 through the first air inlet 111, and the gas in the cavity 1 is reduced. At this time, the gas in the return air cavity 2 will enter the cooking cavity 15 to supplement the reduced gas, that is, the gas in 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 the gas re-enters the cavity 1 through the first return air inlet 112 to form the first airflow.

[0079] The gas in the cooking cavity 15 can enter the return air cavity 2 through the first air inlet 111, and the gas in 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 in the cooking cavity 15 enters the return air cavity 2 through the first return air inlet 111, and the gas in the return air cavity 2 returns to the cavity 1 through the second and / or third return air inlets 121, 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; the gas can also 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 will 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, there is a first airflow in the cavity assembly; in the second heating mode, there are both the first airflow and the second airflow in the cavity assembly. Preferably, the first airflow is suitable for air frying heating, and the second airflow is suitable for forced convection circulation heating. In this embodiment, the first heating mode is an air frying heating mode, and the second heating mode is an air frying heating and forced convection circulation heating mode. When the first heating mode is performed, the top of the food is heated by air frying and becomes crispy. When the second heating mode is performed, the top of the food can be heated by air frying, so that the top of the food becomes crispy; the bottom of the food is heated by forced convection circulation to retain moisture, so that the bottom of the food becomes tender and juicy. Of course, in other embodiments, the first airflow and the second airflow can also select other heating modes, for example, both are forced convection circulation heating, or both are air frying heating, etc. At this time, the aperture sizes of the corresponding air outlet and air inlet are adjusted accordingly.

[0082] like Figure 4 As shown, specifically, the return air chamber 2 is surrounded by an air duct, which includes a first section of the air duct 21 , a second section of the air duct 22 , and a third section of the 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 flow 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 flow path of the gas. Of course, a motor and fan blades can also be installed in the first section of the air duct 21 to drive the movement of gas in the return air cavity 2.

[0084] The second air duct 22 is connected at its head and tail to one end of the first air duct 21 and the second air return port 121. Specifically, the second air duct 22 is a hollow channel. In this embodiment, a part of the channel shell of the second air duct 22 can also be formed by the left side plate 12, so that the second air duct 22 is directly embedded in the cavity 1.

[0085] The third section of the air duct 23 is connected at its head and tail to the other end of the first section of the air duct 21 and the third air return port 131. Specifically, the third section of the air duct 23 is symmetrically arranged with the second section of the air duct 22. The second section of the air duct 22 and the third section of the air duct 23 can cooperate with the first section of the air duct 21 to form a gas movement channel for the 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, so as to realize various 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 motor 32 rotates to drive 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, firstly, a baffle 31 is provided at the bend of the return air chamber 2, the fixed axis of the baffle 31 is placed horizontally, and the baffle 31 can rotate up and down around the fixed axis, so as to adjust the flow cross-sectional area in the return air chamber 2. Secondly, a baffle 31 is provided at the bend of the return air chamber 2, the fixed axis of the baffle 31 is placed vertically, and the baffle 31 can rotate left and right around the fixed axis, so as to adjust the flow cross-sectional area in the return air chamber 2.

[0087] Preferably, when the baffle 31 rotates to a flow cross-sectional area of ​​the second airflow is zero, the steam oven is in the first heating mode; when the baffle 31 rotates to a flow cross-sectional area of ​​the second airflow is not zero, the steam oven is in the second heating mode. In this embodiment, the control component 3 can control the opening and closing of the second section air duct 22 and the third section air duct 23, that is, control the flow cross-sectional area of ​​the second airflow. For example, the control component 3 closes the second air duct 22 and the third 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 air duct 22 and closes the third 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 air duct 22 and opens the third 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 air duct 22 and the third 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 component 3 can control the rotation angle of the baffle 31 according to the parameters in the cooking cavity 15, so as to adjust the flow cross-sectional area of ​​the second airflow. Preferably, the cavity component also includes a temperature sensor, which is arranged in the cooking cavity 15 to detect the temperature of the cooking cavity 15. The control component 3 can adjust the flow cross-sectional area of ​​the second airflow according to 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, and then the steam oven can select the corresponding heating mode according to the temperature, so that the heating effect of food is better.

[0089] It should be understood that the baffle 31 can be placed in the first air duct 21 to directly block the gas in the first air duct 21 from entering the second air duct 22 and the third air duct 23, or it can be placed in the second air duct 22 and the third air duct 23 to block the flow of gas in the second air duct 22 and the third 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 by 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 on the bottom of the cooking chamber 15.

[0091] like Figure 4 As shown, specifically, the air frying assembly 4 can drive the gas flow in the return air chamber 2 and the cooking chamber 15. The air frying assembly 4 includes a motor 41, a centrifugal fan blade 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, and the motor shaft of the motor 41 passes through the housing of the return air chamber 2 and extends into the return air chamber 2, so that the motor 41 is connected to the centrifugal fan blades 42 located in 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] Among them, the centrifugal blades 42 are located in the return air chamber 2. Specifically, the centrifugal blades 42 are located above the first air inlet 111. The shaft of the centrifugal blades 42 is connected to the motor shaft, and the rotation of the motor shaft drives the centrifugal blades 42 to rotate. The rotation of the centrifugal blades 42 can inhale the gas in the cooking chamber 15 into the return air chamber 2 through the first air inlet 111; and the centrifugal blades 42 can centrifugally push part of the gas to the first return air port 112, so that the first airflow can form air frying heating. For example, the centrifugal blades 42 can inhale the gas located below the centrifugal blades 42 and centrifugally push the gas to the left and right sides of the blades 32. Furthermore, the rotation of the centrifugal blades 42 can transport the gas located in the cavity 1 to the return air chamber 2 through the first air inlet 111 in the center of the top plate 11. And the rotation of the centrifugal blades 42 can transport part of the gas located in the return air chamber 2 to the cavity 1 through the four first return air ports 112 on the diagonal of the top plate 11, 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 rotation speed of the centrifugal blades 42 can be adjusted to add more heating modes. For example, the rotation speed can be increased to achieve a better air frying effect; the rotation speed can be reduced to achieve a heating effect of forced convection circulation; or the centrifugal blades 42 can be stopped to achieve a heating mode of directly baking food with the first heating tube 43.

[0095] The centrifugal fan blades 42 can also centrifugally push part of the gas to the second and / or third return air ports 121, 131, so that the second airflow can form a forced convection cycle heating. For example, the centrifugal fan blades 42 centrifugally transport the gas to the end of the return air chamber 2, and enter the cooking chamber 15 through the second return air port 121 and the third return air port 131 at the end of the return air chamber 2.

[0096] The first heating tube 43 provides heat for the return air chamber 2, and is specifically located between the centrifugal blades 42 and the first air inlet 111. The first heating tube 43 is a two-circle heating tube coiled in a circular shape. The gas flows slowly below the centrifugal blades 42, thereby extending the time for the gas to be heated by the first heating tube 43, achieving a better heating effect.

[0097] Specifically, Figure 4 , Figure 7 As shown, in order to make the gas of the second airflow hotter and the heating effect better, a second heating tube 5 is arranged in the return air chamber 2 and is arranged on the second airflow. Preferably, the second heating tube 5 is arranged in the second section of the air duct 22 and the third section of the air duct 23 of the return air chamber 2, and is arranged near the second and third return air ports. The second heating tube 5 can heat the wind in the return air chamber 2 to improve the effect of heating food. In this embodiment, the coiled shape of the second heating tube 5 is rectangular, and it is installed near a 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, the second and third return air ports are trapezoidal, and the coiled shape of the second heating tube 5 is also trapezoidal. Since the gas flow rate at the second and third return air ports is slow, the gas can be in contact with the second heating tube 5 for a longer time, and the second heating tube 5 can achieve a better heating effect, making the gas entering the cavity 1 hotter.

[0098] Specifically, Figure 4As shown, the baking tray 6 can be detachably placed in the cavity 1 to divide the cooking cavity 15 into at least two layers, thereby increasing the heating mode of the steam oven. For example, the inner surfaces of the left side plate 12 and the right side plate 13 also include protrusions 122 and 132; the baking tray 6 can be detachably placed on the protrusions. In this embodiment, the inner surfaces of the left side plate 12 and the right side plate 13 also include protrusions 122 and 132 in the horizontal direction, and the baking tray 6 can be detachably placed on the protrusions 122 and 132 to separate the cavity 1 into an upper layer and a lower layer. Specifically, there can be a gap between the baking tray 6 and the left side plate 12, the right side plate 13, the front plate, and the back plate 14 of the cavity 1. In other embodiments, the periphery of the baking tray 6 also includes a sealing rubber ring, so that there is no gap between the left side plate 12, the right side plate 13, the front plate, and the back plate 14 of the cavity 1, and the cavity 1 is divided into independent upper and lower layers. 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 alone, and the lower layer of the cavity 1 can perform forced convection circulation heating alone. 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. The corresponding second return air port 121 and the third return air port 131 can be additionally provided on each layer to enable the second heating mode.

[0099] Specifically, the convection component 7 can provide additional convection wind for the cavity 1. It is arranged on the back plate 14 of the cavity 1. The convection component 7 can form convection wind for the upper layer and / or lower layer in the cooking cavity 15. For example, the convection component 7 includes a motor and a centrifugal fan blade, that is, a motor and a centrifugal fan blade are respectively arranged at the upper part and the lower part of the back plate 14, so that when the motor drives the centrifugal fan blade to rotate, convection wind can be formed on the upper layer and the lower layer of the cavity. This structure enables the cavity component to have more heating mode options. For example, the upper layer of the cooking cavity can be cooked by convection wind alone, the lower layer of the cooking cavity can be cooked by convection wind alone, or the upper and lower layers of the cooking cavity can be cooked by convection wind at the same time.

[0100] Specifically, the steam oven may further include a steam component, which can steam heat the cavity. For example, there are steam inlets at the bottom of the left plate 12 and the right plate 13, and steam enters the cavity 1 through the steam inlets to heat the food. When a baking tray is placed in the steam oven, the upper layer of the cavity 1 can be heated in an air frying mode, and the lower layer can be heated in a forced convection circulation mode and a steam heating mode. The steam oven has more heating modes and better heating effects.

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

[0102] Embodiment 2:

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

[0104] The cavity assembly comprises 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 plate 11, a left side plate 12, a right side plate 13, a back plate 14, a bottom plate, a front plate, and a cooking cavity 15. The top plate 11 includes a first air inlet 111 and a first air return port 112. The left side plate 12 includes a second air return port 121, and the right side plate 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 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. 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 vertically recessed 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 the concave bottom surface 1132 is parallel to the first plane A.

[0109] Among them, the concave side surface 1131 has one end connected to the top plate 11 located on the first plane A, and the other end connected to the concave bottom surface 1132, and 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, and 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, and 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, and the air ducts 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 rate of the gas in the return air chamber 2.

[0112] The air frying assembly 4 is disposed above the top plate 11, and includes a motor 41, a centrifugal blade 42, and a first heating tube 43. The height of the centrifugal blade 42 can be adjusted up and down, thereby adjusting 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 can be detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0115] The convection assembly 7 , which is disposed on the back plate 14 of the cavity 1 , can provide the cavity 1 with additional convection wind.

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

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

[0118] Embodiment 3:

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

[0120] The cavity assembly comprises 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 plate 11, a left side plate 12, a right side plate 13, a back plate 14, a bottom plate, a front plate, and a cooking cavity 15. The top plate 11 includes a first air inlet 111 and a first air return port 112. The left side plate 12 includes a second air return port 121, and the right side plate 13 includes a third air return port 131.

[0122] The return air chamber 2 is surrounded by air ducts, and the air ducts 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] On the basis of Embodiment 1, preferably, the first section of the air duct 21 is a hood, which is mounted on the upper surface of the top plate 11, and 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 a hood side surface 213. The first section of the air duct 21 is composed of the hood top surface 212 and the hood side surface 213.

[0124] The wind shield 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] Among them, one end of the hood side surface 213 is connected to the upper surface of the top plate 11, and a closed curve is formed 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. A hole is also provided on the hood side surface 213, and the second section of the air duct 22 and the third section of the air duct 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 gas of the centrifugal blade 42 touches the hood top surface 212, it is divided into left and right parts and moves toward the hood side surface 213. When the gas moves to the side 213 of the hood, part of the gas is reflected by the side 213 of the hood to the top plate 11 and enters the cavity 1 from the first return air port 112; part of the gas enters the second section of the duct 22 and the third section of the duct 23 from the holes on the side 213 of the hood. The hood can effectively improve the gas circulation path and further improve 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 rate of the gas in the return air chamber 2.

[0127] The air frying assembly 4 is disposed above the top plate 11 , and includes a motor 41 , a centrifugal fan blade 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 can be detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0130] The convection assembly 7 , which is disposed on the back plate 14 of the cavity 1 , can provide the cavity 1 with additional convection wind.

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

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

[0133] Embodiment 4:

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

[0135] The cavity assembly comprises 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 plate 11, a left side plate 12, a right side plate 13, a back plate 14, a bottom plate, a front plate, and a cooking cavity 15. The top plate 11 includes a first air inlet 111 and a first air return port 112. The left side plate 12 includes a second air return port 121, and the right side plate 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 partially recessed 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, and the air ducts 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 rate of the gas in the return air chamber 2.

[0141] The air frying assembly 4 is disposed above the top plate 11 , and includes a motor 41 , a centrifugal fan blade 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 can be detachably placed on the cavity 1 to divide the cooking cavity 15 into multiple layers.

[0144] The convection assembly 7 , which is disposed on the back plate 14 of the cavity 1 , can provide the cavity 1 with additional convection wind.

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

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

[0147] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs 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 some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description 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 plate, and a right plate; the top plate is provided with a first air inlet and a first air return port; the left plate is provided with a second air return port; and the right plate is provided with a third air return port; The cavity also includes a cooking cavity; an air return chamber, the air return chamber being connected to the cooking chamber via the first air inlet and the first air return port, and the air return chamber being connected to the cooking chamber via the second air return port and the third air return 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 both the first airflow and the second airflow in the cavity assembly.

2. The chamber assembly according to claim 1, characterized in that: The cavity assembly also includes: The control component comprises 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.

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

4. The chamber assembly according to claim 1, characterized in that: The cavity assembly also includes: An air frying assembly, the 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; Among them, the rotation of the centrifugal fan blades can suck 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 outlet, 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 gas to the second and / or third return air outlets, so that the second airflow can form forced convection circulation heating.

6. The chamber assembly according to claim 1, characterized in that: The cavity assembly also includes a baking tray, which is detachably placed in the cavity to divide the cooking cavity into at least two layers.

7. The chamber 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 for the upper layer and / or the lower layer of the cooking cavity.

8. The chamber 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 chamber assembly according to claim 8, characterized in that: The air duct includes a second section of the air duct and a third section of the air duct; The second air duct section is connected to one end of the first air duct section and the second air return outlet at its beginning and end, and the third air duct section is connected to the other end of the first air duct section and the third air return outlet at its beginning and end.

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 port 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 port are located in the inner concave portion; Wherein, 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 includes: a second heating tube, which is located in the return air cavity and is arranged on the second airflow.

13. A steam oven, characterized in that Comprising a cavity assembly as described in any one of claims 1-12.

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