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 top plate, a left side plate, a right side plate and a cooking cavity; a flow divider; the shunting cavity is communicated with the cooking cavity through the second air inlet and the third air return opening; the flow dividing body is further connected with the first air inlet; the air return cavity is communicated with the flow dividing cavity through a first air inlet, and the air return cavity is further communicated with the cooking cavity through a first air return opening and a second air return opening; the gas in the cavity assembly can form a first gas flow and a second gas flow. The first heating mode or the second heating mode can be performed through the cavity, so that the steaming 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 kitchen appliance technical field, especially a cavity assembly and steam oven thereof. BACKGROUND

[0002] The steam oven is a kind of household appliance, it can steam heating, baking to food.

[0003] For example, in the Chinese patent document with the 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 high-speed operating gear, a large amount of heat at the heating element is carried away by the fan, and after passing through the air return cavity, it flows to the cooking cavity through the second opening to exchange heat with the food in a hot air circulation manner at a stable low heat flux density. Alternatively, when the fan is working at a low-speed operating gear, the heat generated by the operation of the heating element is radiated at a high heat flux density to transfer heat to the food in the cooking cavity through the first opening to cook the food. However, this arrangement of the gas inlet and outlet on the cavity makes the heating mode of the steam oven single and the heating effect poor. SUMMARY

[0004] The utility model aims to provide a cavity assembly and steam oven thereof, which aims to solve the problems of single heating mode and poor heating effect.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application provides a cavity assembly for a cooking appliance, which comprises:

[0006] a cavity comprising a top plate, a left side plate, a right side plate and a cooking cavity; the top plate is provided with a first air inlet; the left side plate is provided with a first air return; and the right side plate is provided with a second air return;

[0007] a flow divider located in the cooking cavity; the flow divider comprises a second air inlet, a third air return and a flow divider cavity; the flow divider cavity is in communication with the cooking cavity through the second air inlet and the third air return; and the flow divider is also connected to the first air inlet;

[0008] an air return cavity in communication with the flow divider cavity through the first air inlet, and also in communication with the cooking cavity through the first air return and the second air return;

[0009] wherein,

[0010] the gas in the cooking cavity can enter the flow divider cavity through the second air inlet, and the gas in the flow divider cavity can return to the cooking cavity through the third air return to form a first air flow;

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

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

[0013] Compared with the prior art, the cooking cavity, the second air inlet, the shunt cavity, and the third return air outlet are arranged to enable the gas in the cooking cavity to enter the shunt cavity through the second air inlet, and the gas in the shunt cavity to return to the cooking cavity through the third return air outlet to form the first airflow. The cooking cavity, the second air inlet, the shunt cavity, the first air inlet, the first return air outlet, and the second return air outlet are arranged to enable the gas in the cooking cavity to enter the shunt cavity through the second air inlet, and the gas in the shunt cavity to enter the return air cavity through the first air inlet, and the gas in the return air cavity to return to the cooking cavity through the first return air outlet and / or the second return air outlet to form the second airflow. The cavity can have the first airflow or the first airflow and the second airflow at the same time, so that the steam oven has multiple heating modes. In the second heating mode, the cavity can have two heating modes on the first airflow and the second airflow at the same time, so that the steam oven can have multiple heating modes at the same time, and the heating effect is better.

[0014] In some embodiments, the cavity assembly further comprises a control assembly comprising a baffle in the return air cavity, the baffle being rotatable relative to the return air cavity to adjust the cross-sectional area of the second airflow.

[0015] The baffle of the control assembly can adjust the cross-sectional area of the second airflow, which makes it possible for the cavity assembly to have the first heating mode and the second heating mode respectively.

[0016] In some embodiments, when the baffle is rotated to zero the cross-sectional area of the second airflow, the cooking appliance is in the first heating mode; and when the baffle is rotated to a non-zero cross-sectional area of the second airflow, the cooking appliance is in the second heating mode.

[0017] The rotation mode of the baffle can control the cooking appliance to be in the first heating mode or the second heating mode. And the control of the cross-sectional area can control the different intensity of the second airflow, thereby increasing more heating modes.

[0018] In some embodiments, the cavity assembly further comprises: an air-frying assembly, the air-frying assembly comprising a first centrifugal fan blade, a first heating pipe;

[0019] The first centrifugal fan blade and the first heating pipe are located in the distribution cavity.

[0020] The first centrifugal fan blade is capable of sucking the gas in the cooking cavity into the distribution cavity through the second air inlet by rotation, and the first centrifugal fan blade is capable of centrifugally pushing part of the gas to the third air return port, so that the first air flow is capable of forming air-frying heating.

[0021] By setting the first centrifugal fan blade, the first centrifugal fan is capable of sucking or centrifugally pushing the gas, so that the cavity assembly is capable of forming the first air flow, and by setting the first heating pipe, the first air flow is capable of forming air-frying heating.

[0022] In some embodiments, the first centrifugal fan blade is further capable of centrifugally pushing part of the gas to the first air inlet, and the gas flows to the first air return port and / or the second air return port, so that the second air flow is capable of forming forced convection circulation heating.

[0023] By setting the first centrifugal fan blade, part of the gas is further centrifugally pushed to the first air inlet, and the gas flows to the first air return port and / or the second air return port, so that the cavity assembly is capable of forming the second air flow, and the second air flow is capable of forming forced convection circulation heating.

[0024] In some embodiments, the air-frying assembly further comprises: a second centrifugal fan blade located in the air return cavity.

[0025] The second centrifugal fan blade is capable of centrifugally pushing the gas in the air return cavity to the first air return port and / or the second air return port by rotation.

[0026] By setting the second centrifugal fan blade, and the centrifugal fan blade is capable of centrifugally pushing the gas in the air return cavity to the first air return port and / or the second air return port by rotation, so that the flow rate of the second air flow is further accelerated, and the user can additionally select the air speed of the second air flow, so that the cooking cavity increases more heating modes.

[0027] In some embodiments, 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.

[0028] By setting the 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.

[0029] In some embodiments, the cavity further comprises a back plate, and a convection assembly is arranged on the back plate, and the convection assembly is capable of forming a convection air flow on the upper layer and / or the lower layer of the cooking cavity.

[0030] By arranging the convection assembly on the back plate, the convection assembly is capable of forming a convection air flow on the upper layer and / or the lower layer of the cooking cavity, and the path of the gas circulation is increased, and the heating mode is further increased.

[0031] In some embodiments, the return air cavity is surrounded by an air duct, and the air duct is connected with the first air inlet, the first return air outlet and the second return air outlet.

[0032] By arranging the return air cavity surrounded by the air duct, and the air duct connected with the first air inlet, the first return air outlet and the second return air outlet, the gas movement channel capable of forming the second air flow outside the cavity is formed.

[0033] In some embodiments, the flow divider is a wind shield, the wind shield is installed on the lower surface of the top plate, and the wind shield covers the first air inlet of the top plate.

[0034] By arranging the flow divider as the wind shield, and the wind shield installed on the lower surface of the top plate, the wind shield covers the first air inlet of the top plate, and the gas movement channel capable of forming the first and second air flows inside the cavity is formed.

[0035] In some embodiments, the second air inlet is located on the bottom surface of the wind shield, and the third return air outlet is located on the side surface of the wind shield.

[0036] By arranging the second air inlet on the bottom surface of the wind shield and the third return air outlet on the side surface of the wind shield, the gas returning to the cooking cavity from the third return air outlet can touch the side wall of the cavity, the path length of the gas circulation is increased, and the heating effect of the gas circulation is improved.

[0037] In some embodiments, the cavity assembly comprises a second heating pipe located in the return air cavity and arranged on the second air flow.

[0038] By arranging the second heating pipe on the second air flow, the gas entering the cooking cavity from the first and second return air outlets can be heated, and the heating effect is further improved.

[0039] The application also provides a steam oven comprising the cavity assembly of any one of the above embodiments.

[0040] In order to better understand and implement, the application will be described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a three-dimensional schematic view of the steam oven in the embodiment;

[0042] Figure 2 is a structural schematic view of the cavity in the embodiment;

[0043] Figure 3 is a structural schematic view of the first air inlet, the first and second air return in the embodiment;

[0044] Figure 4 is a schematic diagram of the steaming oven in the embodiment;

[0045] Figure 5 is a structural schematic view of the control assembly in the embodiment;

[0046] Figure 6 is a structural schematic view of the control assembly in the embodiment;

[0047] Figure 7 is a structural schematic view of the second centrifugal fan blade in the embodiment;

[0048] Figure 8 is a structural schematic view of the second heating pipe in the embodiment;

[0049] Explanation of reference signs:

[0050] 1 cavity, 11 top plate, 111 first air inlet, 12 left side plate, 121 first air return, 1211 through hole, 122 protrusion, 13 right side plate, 131 second air return, 1311 through hole, 132 protrusion, 14 back plate, 15 cooking cavity;

[0051] 2 flow divider, 21 second air inlet, 22 third air return, 23 flow divider cavity, 24 air baffle bottom surface, 25 air baffle side surface;

[0052] 3 air return cavity, 31 first section of air duct, 32 second section of air duct, 33 third section of air duct;

[0053] 4 control assembly, 41 baffle, 42 motor;

[0054] 5 air frying assembly, 51 motor, 52 first centrifugal fan blade, 53 first heating pipe, 54 second centrifugal fan blade; 6 second heating pipe; 7 baking tray, 8 convection assembly. DETAILED DESCRIPTION

[0055] In order to better illustrate the present application, the present application will be further described in detail below with reference to the accompanying drawings.

[0056] It should be clear that the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0057] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It also will be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0058] The following description refers to the accompanying drawings. In the following description, same numbers used in different drawings represent the same or similar elements unless otherwise described. The following example embodiments described in the following examples do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the application, it should be understood that the terms "first", "second", "third", etc., merely identify different classes of objects, and do not necessarily imply a specific order or sequence, unless otherwise specified. The specific meaning of the above terms in the present application can be understood by the person of ordinary skill in the art according to the specific circumstances.

[0059] In addition, in the description of the application, "a plurality of" means two or more, unless otherwise stated. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0060] The 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, and the gas can contact the food through the gas circulation to achieve the effect of heating, such as air frying heating, 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.

[0061] Therefore, the present application provides a cavity assembly and a steam oven thereof, which can effectively improve the above problems. Specific embodiments will be provided below.

[0062] A steam oven includes a cavity assembly, a microwave assembly, and a steam assembly.

[0063] As shown in Figure 1 The cavity assembly includes a cavity 1, a flow divider 2, an air return cavity 3, a control assembly 4, an air frying assembly 5, a second heating pipe 6, a baking tray 7, and a convection assembly 8.

[0064] As shown in Figure 2 particular, the cavity 1 is a cavity for heating food, which comprises 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 with the left side plate 12, and the right part of the top plate 11 is connected with the right side plate 13. In particular, 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 in the figure) are all rectangular, which enclose the cavity 1.

[0065] The cavity 1 further comprises a cooking cavity 15 located in the cavity 1 for heating food.

[0066] As shown in Figure 3 particular, the top plate 11 is provided with a first air inlet 111. For example, the top plate 11 is square, and in this embodiment, the number of first air inlets 111 is four, which are respectively located on the diagonals of the top plate 11, forming a cross shape, so that the gas at the corners of the cavity 1 can also be circulated, thereby improving the heating effect. In other embodiments, there are two first air outlets 112 on the left and right sides of the first air inlet 111.

[0067] In particular, the left side plate 12 is provided with a first air outlet 121. For example, the first air outlet 121 is located in the middle of the bottom of the left side plate 12, which is composed of a plurality of circular holes.

[0068] In particular, the right side plate 13 is provided with a second air outlet 131. In particular, 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 a specific position of the wind, the number and position of the first air outlet 121 and the second air outlet 131 can be adjusted to meet the requirements. For example, the number of first air outlets 121 on the left side plate 12 can be two, which are arranged at the two side positions of the bottom of the left side plate 12.

[0069] As shown in Figure 3As shown, preferably, the first return air outlet 121 and the second return air outlet 131 are a plurality of through holes 1211, 1311 densely arranged on the left side plate 12 and the right side plate 13. The first return air outlet 121 and the second return air outlet 131 formed by the plurality of through holes 1211, 1311 are rectangular with a length to height ratio of 4:1. Specifically, the first 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 first return air outlet 121 can be one-third of the height of the left side plate 12, so that the gas can slowly enter the cavity 1 and fully contact the food. The number of through holes 1211, 1311 increases from high to low. The through holes 1211, 1311 in this embodiment are arranged in this way, so that the air outlet is slower and it is easier to form forced convection wind heating.

[0070] Specifically, as shown in the drawings, Figure 4 As shown, the shunt 2 is located in the cooking cavity 15; the shunt 2 includes a second air inlet 21, a third return air outlet 22, and a shunt cavity 23.

[0071] The shunt 2 is installed at the top of the cavity 1 to facilitate air frying heating. Preferably, the shunt 2 is a wind cover, which is installed on the lower surface of the top plate 11, and the wind cover covers the first air inlet 111 of the top plate 11. For example, the wind cover is composed of a wind cover bottom surface 24 and a wind cover side surface 25. The wind cover bottom surface 24 is located below the top plate 11 and parallel to the top plate 11. Specifically, the wind cover bottom surface 24 is a square plane. The wind cover side surface 25 is connected to the lower surface of the top plate 11 at one end, and the connection forms a closed curve to form the shunt cavity 23. The other end of the wind cover side surface 25 is connected to the wind cover bottom surface 24. It should be understood that the shunt 2 can also be installed at other positions and have other shapes.

[0072] The second air inlet 21 and the third return air outlet 22 are provided on the shunt 2. For example, the second air inlet 21 and the third return air outlet 22 can be provided on the wind cover bottom surface 24. Preferably, the second air inlet 21 is located on the bottom surface 24 of the wind cover, and the third return air outlet 22 is located on the side surface 25 of the wind cover. Further, the included angle between the wind cover side surface 25 and the wind cover bottom surface 24 is obtuse, for example, the included angle between the wind cover side surface 25 and the wind cover bottom surface 24 is 135 degrees. When the gas moves to the wind cover side surface 25, part of the gas is reflected by the wind cover side surface 25 to the top plate 11, enters the return air cavity 3 from the first air inlet 111, and part of the gas returns to the cooking cavity 15 from the second air inlet 21 on the wind cover side surface 25. The above-mentioned wind cover can effectively improve the gas circulation path and further improve the heating effect. In other embodiments, the wind cover can also be a semicircular cover, the second air inlet 21 is located on the bottom surface 24 of the semicircular wind cover, and the third return air outlet 22 is located on the side surface 25 of the semicircular wind cover.

[0073] The shunt cavity 23 is a space in the shunt body 2, which communicates with the cooking cavity 15 through the second air inlet 21 and the third air return 22; the shunt body 2 is also connected to the first air inlet 111.

[0074] Specifically, the air return cavity 3 is located outside the cavity 1, and the air return cavity 3 communicates with the shunt cavity 23 through the first air inlet 111, and also communicates with the cooking cavity 15 through the first air return 121 and the second air return 131.

[0075] The gas in the cooking cavity 15 can enter the shunt cavity 23 through the second air inlet 21, and the gas in the shunt cavity 23 can return to the cooking cavity 15 through the third air return 22, to form a first air flow. Specifically, the gas in the cooking cavity 15 can enter the shunt cavity 23 through the second air inlet 21, and the gas in the shunt cavity 23 can return to the cooking cavity 15 through the third air return 22, to form a first air flow. The gas enters the shunt cavity 23 through the second air inlet 21, and the gas returns to the cooking cavity 15 through the third air return 22 to form a first air flow.

[0076] The gas in the cooking cavity 15 can enter the shunt cavity 23 through the second air inlet 21, and the gas in the shunt cavity 23 can enter the air return cavity 3 through the first air inlet 111, and the gas in the air return cavity 3 can return to the cooking cavity 15 through the first air return 121 and / or the second air return 131, to form a second air flow. Specifically, the gas in the cooking cavity 15 enters the shunt cavity 23 through the second air inlet 21, and the gas in the shunt cavity 23 returns to the cooking cavity 15 through the first air return 121 and / or the second air return 131, to form a second air flow. For example, the gas can enter the cooking cavity 15 through the first air return 121 only, to form a second air flow; or the gas can enter the cooking cavity 15 through the second air return 131 only, to form a second air flow; or the gas can enter the cooking cavity 15 through the first air return 121 and the second air return 131, to form a second air flow.

[0077] At this time, the path of the first air flow and the path of the second air flow do not conflict, so that the cavity 1 can perform different heating modes on different air flows.

[0078] 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; 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 this case, the corresponding air outlet and air inlet apertures can be adjusted accordingly. For example, the first and second return air vents 121 and 131 can be made into smaller apertures to allow for faster airflow, thus achieving air frying.

[0079] Specifically, such as Figure 4 As shown, the return air cavity 3 is surrounded by an air duct, and the air duct connects the first air inlet 111, the first return air outlet 121, and the second return air outlet 131. For example, the air duct includes a first section of the air duct 31, a second section of the air duct 32, and a third section of the air duct 33.

[0080] The first section of the air duct 31 is connected to the first air inlet 111. Specifically, the first section of the air duct 31 is located above the top plate 11 and completely covers the upper surface of the top plate 11, so that the gas entering the return air chamber 3 through the first air inlet 111 can circulate within the first section of the air duct 31. In some embodiments, the first section of the air duct 31 can also be an angled cover plate that covers the first air inlet 111. 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 31 to drive the gas movement in the return air chamber 3.

[0081] The second air duct section 32 is connected at its ends to one end of the first air duct section 31 and the first air return port 121. Specifically, the second air duct section 32 is a hollow channel, with the top of the second air duct section 32 connected to the left end of the first air duct section 31, and the bottom of the second air duct section 32 connected to the first air return port 121. In this embodiment, part of the channel housing of the second air duct section 32 can also be formed by the left side panel 12, so that the second air duct section 32 is directly embedded in the cavity 1.

[0082] The third section of air duct 33 is connected to the other end of the first section of air duct 31 and the second return air outlet 131. Specifically, the third section of air duct 33 is symmetrically arranged with the second section of air duct 32. The top of the third section of air duct 33 is connected to the right end of the first section of air duct 31, and the bottom of the third section of air duct 33 is connected to the second return air outlet 131. The second section of air duct 32 and the third section of air duct 33 can cooperate with the first section of air duct 31 to form a gas movement channel for the second gas flow outside the cavity 1.

[0083] Specifically, the control assembly 4 can control the opening and closing of the second gas flow, thereby realizing multiple heating modes of the steam oven. In this embodiment, the control assembly 4 includes a baffle 41 located in the return air cavity 3. The baffle 41 can rotate relative to the return air cavity 3 to adjust the flow area of the second gas flow. Specifically, the control assembly 4 further includes a motor 42 that rotates to drive a transmission mechanism, which opens or closes the return air cavity 3. For example, the transmission mechanism is a belt or a gear. In this embodiment, two types of control assemblies 4 are given, as shown in FIGS. 5 and 6. One is that the baffle 41 is arranged at the bend of the return air cavity 3. The fixed shaft of the baffle 41 is horizontally placed, and the baffle 41 can rotate up and down around the fixed shaft to adjust the flow area of the return air cavity 3. The other is that the baffle 41 is arranged at the bend of the return air cavity 3. The fixed shaft of the baffle 41 is vertically placed, and the baffle 41 can rotate left and right around the fixed shaft to adjust the flow area of the return air cavity 3. Figure 5 、 Figure 6

[0084] Preferably, when the baffle 41 rotates to zero the flow area of the second gas flow, the steam oven is in a first heating mode. When the baffle 41 rotates to a non-zero flow area of the second gas flow, the steam oven is in a second heating mode. In this embodiment, the control assembly 4 can control the opening and closing of the second section of air duct 32 and the third section of air duct 33, i.e., control the flow area of the second gas flow. For example, the control assembly 4 closes the second section of air duct 32 and the third section of air duct 33 to perform air-frying heating, i.e., the steam oven is in a first heating mode. Or the control assembly 4 opens the second section of air duct 32 and closes the third section of air duct 33 to perform air-frying heating and forced convection heating on the bottom left side of the cooking cavity 15, i.e., the steam oven is in a second heating mode. Or the control assembly 4 closes the second section of air duct 32 and opens the third section of air duct 33 to perform air-frying heating and forced convection heating on the bottom right side of the cooking cavity 15, i.e., the steam oven is in a second heating mode. Or the control assembly 4 opens the second section of air duct 32 and the third section of air duct 33 to perform air-frying heating and forced convection heating on the bottom of the cooking cavity 15, i.e., the steam oven is in a second heating mode.

[0085] ​Preferably, the control assembly 3 can control the angle of the baffle 41 according to the parameters in the cooking cavity 15, so as to adjust the cross-sectional area of the second airflow. Preferably, the cavity assembly further comprises a temperature sensor arranged in the cooking cavity 15 to detect the temperature of the cooking cavity 15. The control assembly 3 can adjust the cross-sectional area of the second airflow according to the temperature parameter provided by the temperature sensor. For example, when the temperature of the bottom of the cooking cavity 15 is too high, the baffle 41 can be closed; when the temperature of the left side of the bottom of the cooking cavity 15 is too high, only the baffle 41 located in the second air duct 22 can be closed, so that the steam oven can select the corresponding heating mode according to the temperature, so that the heating effect of the food is better.

[0086] It should be understood that the baffle 41 can be placed in the first air duct 31 to block the gas in the first air duct 31 from entering the second air duct 32 and the third air duct 33, or placed in the second air duct 32 and the third air duct 33 to block the gas flow in the second air duct 32 and the third air duct 33.

[0087] In this embodiment, the baffle 41 is located at the bending position of the return air cavity 32. When the baffle 41 is rotated to the open position, the cross-sectional area of the second airflow is the largest; when the baffle 41 is rotated by an angle, the cross-sectional area of the second airflow becomes smaller, and at this time, the heating effect of the bottom of the cooking cavity 15 becomes poor; when the baffle 41 is rotated to the closed position, the cross-sectional area of the second airflow is zero, at this time, no gas enters the cavity 1 through the first return air port 121 and the second return air port 131, and the bottom of the cooking cavity 15 has no heating effect.

[0088] Specifically, as shown in Figure 4 The air frying assembly 5 can drive the gas flow in the shunt cavity 23. The air frying assembly 5 comprises a motor 51, a first centrifugal fan blade 52, and a first heating pipe 53.

[0089] The motor 51 is located outside the return air cavity 3, the motor shaft of the motor 51 penetrates the shell of the return air cavity 3 and extends into the return air cavity 3 and the cavity 1, so that the motor 51 is connected to the first centrifugal fan blade 52 located in the shunt cavity 23. The motor 51 can be a shaded pole motor. In some embodiments, the motor 51 can also be directly installed in the return air cavity 3.

[0090] The first centrifugal fan 52 is located in the distribution chamber 23. Specifically, the first centrifugal fan 52 is located above the second air inlet 21. The shaft of the first centrifugal fan 52 is connected to the motor shaft, and the rotation of the motor shaft drives the rotation of the first centrifugal fan 52. The rotation of the first centrifugal fan 52 can suck the gas in the cooking chamber 15 into the distribution chamber 23 through the second air inlet 21; and the first centrifugal fan 52 can centrifugally push part of the gas to the third air return 22, so that the first air flow can form air-frying heating. For example, the first centrifugal fan 52 can suck the gas located below the first centrifugal fan 52 and centrifugally push the gas to the left and right sides of the fan 32. Further, the rotation of the first centrifugal fan 52 can transport the gas in the cooking chamber 15 to the distribution chamber 23 through the second air inlet 121 in the center of the bottom 24 of the air cover. And the rotation of the first centrifugal fan 52 can transport part of the gas in the distribution chamber 23 to the cooking chamber 15 through the third air return 22, forming an air-frying heating mode. It should be understood that the height of the first centrifugal fan 52 can be adjusted up and down, so as to adjust the movement path of the gas.

[0091] Preferably, the rotation speed of the first centrifugal fan 52 can also be adjusted to increase more heating modes. For example, increasing the rotation speed to achieve better air-frying effect; reducing the rotation speed to achieve the heating effect of forced convection circulation; or stopping the rotation of the first centrifugal fan 52 to achieve the heating mode of directly roasting food with the first heating pipe 53.

[0092] The first centrifugal fan 52 can also centrifugally push part of the gas to the first air inlet 111, and then the gas flows to the first air return 121 and / or the second air return 131, so that the second air flow can form forced convection circulation heating. For example, the first centrifugal fan 52 centrifugally transports the gas to the side 25 of the air cover, and then the gas is reflected to the first air inlet 111, enters the first air return 121 and the second air return 131 through the ends of the second and third air ducts 32, 33, and then enters the cooking chamber 15.

[0093] The first heating pipe 53 provides heat for the air return chamber 3, and specifically, it is located between the first centrifugal fan 52 and the first air inlet 111. The first heating pipe 53 is a two-turn heating pipe coiled into a circular shape. The flow rate of the gas at the position below the first centrifugal fan 52 is slow, so as to prolong the time of heating the gas by the first heating pipe 53, and achieve better heating effect.

[0094] As Figure 7As shown, preferably, the air frying assembly 5 can also have a second centrifugal fan 54 located in the return air cavity 3. The second centrifugal fan 54 can be rotated to centrifugally push the gas in the return air cavity 3 to the first return air outlet 121 and / or the second return air outlet 131. For example, the second centrifugal fan 54 shares a motor shaft with the first centrifugal fan 52, which is installed in the return air cavity 3, right above the second centrifugal fan 54. The second centrifugal fan 54 can be rotated to centrifugally push the gas in the first air duct 31 to the first return air outlet 121 and / or the second return air outlet 131.

[0095] Specifically, as shown in Figure 4 , Figure 8 To make the gas in the second air flow hotter and the heating effect better, a second heating pipe 6 is arranged in the return air cavity 3 and on the second air flow. Preferably, the second heating pipe 6 is arranged in the second air duct 32 and the third air duct 33 of the return air cavity 3 and near the first and second return air outlets. The second heating pipe 6 can heat the air in the return air cavity 3 and improve the effect of heating food. In this embodiment, the second heating pipe 6 is in the shape of a rectangle and is installed near the plurality of through holes 1211 and 1311. In other embodiments, the shape of the second heating pipe 6 can also match the shape of the first and second return air outlets. For example, the first and second return air outlets are trapezoidal, and the second heating pipe 6 is also in the shape of a trapezoid. Because the gas flow rate is slow at the first and second return air outlets, the gas can be in contact with the second heating pipe 6 for a longer time, and the second heating pipe 6 can achieve a better heating effect, making the gas entering the cavity 1 hotter.

[0096] Specifically, as shown in Figure 4As shown, the baking tray 7 is placed in the cavity 1 to divide the cooking cavity 15 into at least two layers, thereby increasing the heating modes of the steam oven. For example, the inner surfaces of the left side plate 12 and the right side plate 13 further comprise protrusions 122 and 132, and the baking tray 7 is placed on the protrusions. In this embodiment, the inner surfaces of the left side plate 12 and the right side plate 13 comprise horizontal protrusions 122 and 132, and the baking tray 7 is placed on the protrusions 122 and 132 to divide the cavity 1 into an upper layer and a lower layer. Specifically, the baking tray 7 can have a gap with 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 7 further comprises 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 adding the baking tray 7, the steam oven has more heating modes, and specifically, the upper layer of the cavity 1 can be heated in the air-frying mode, and the lower layer of the cavity 1 can be heated in the forced convection circulation mode. In some embodiments, the bottom of the steam oven is further provided with a steam assembly, and the lower layer of the cavity 1 can be heated in the forced convection circulation mode and the steam heating mode. In some other embodiments, the baking tray 7 can be placed in multiple numbers, for example, the baking tray 7 is two, and the baking tray 7 divides the cooking cavity 15 into three layers, and each layer can be additionally provided with a first return air inlet 121 and a second return air inlet 131 to enable the second heating mode.

[0097] Specifically, the convection assembly 7 can provide additional convection air for the cavity 1, which is arranged on the back plate 14 of the cavity 1, and the convection assembly 7 can form convection air for the upper layer and / or the lower layer of the cooking cavity 15. For example, the convection assembly 7 comprises a motor and a centrifugal fan blade, i.e., one motor and one centrifugal fan blade are arranged on the upper part and the lower part of the back plate 14, respectively, so that when the motor drives the centrifugal fan blade to rotate, the upper layer and the lower layer of the cavity can form convection air. This structure enables the cavity assembly to have more heating mode options, for example, the upper layer of the cooking cavity can be heated in the convection air mode, the lower layer of the cooking cavity can be heated in the convection air mode, or the upper layer and the lower layer of the cooking cavity can be heated in the convection air mode at the same time.

[0098] Specifically, the steam oven can further comprise a steam assembly, and the steam assembly can heat the cavity in the steam mode. For example, the bottom of the left side plate 12 and the right side plate 13 has a steam inlet, and steam enters the cavity 1 through the steam inlet to heat the food. When the baking tray is placed in the steam oven, the upper layer of the cavity 1 can be heated in the air-frying mode, and the lower layer of the cavity 1 can be heated in the forced convection circulation mode and the steam heating mode, thereby increasing the heating modes of the steam oven and improving the heating effect.

[0099] Specifically, the steam oven can further comprise a microwave assembly, and the microwave assembly can heat the cavity in the microwave mode.

[0100] 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, a right side plate, and a cooking cavity; the top plate is provided with a first air inlet; the left side plate is provided with a first air return port; and the right side plate is provided with a second air return port; A flow divider is located in the cooking cavity; the flow divider includes a second air inlet, a third air return port, and a flow divider cavity; the flow divider cavity is connected to the cooking cavity via the second air inlet and the third air return port; the flow divider is also connected to the first air inlet; a return air chamber, the return air chamber being in communication with the diversion chamber via the first air inlet, and the return air chamber being in communication with the cooking chamber via the first return air port and the second return air port; in, The gas in the cooking cavity can enter the diversion cavity through the second air inlet, and the gas in the diversion cavity can return to the cooking cavity through the third air return port to form a first airflow; The gas in the cooking cavity can enter the diversion cavity through the second air inlet, and the gas in the diversion 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 and / or the second 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, characterized in that The cavity assembly further comprises: An air frying assembly, the air frying assembly comprising a first centrifugal fan blade and a first heating tube; the first centrifugal fan blade and the first heating tube are located in the diversion cavity; Among them, the rotation of the first centrifugal fan blade can suck the gas in the cooking cavity into the diversion cavity through the second air inlet; and the first centrifugal fan blade can centrifugally push part of the gas to the third 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 first centrifugal fan blades can also centrifugally push part of the air to the first air inlet, and then the air flows to the first return air outlet and / or the second return air outlet, so that the second airflow can form forced convection circulation heating.

6. The cavity assembly according to claim 5, characterized in that: The air frying assembly further comprises: a second centrifugal fan blade, located in the return air chamber; The rotation of the second centrifugal fan blades can centrifugally push the gas in the return air cavity to the first return air outlet and / or the second return air outlet.

7. The cavity assembly according to claim 1, characterized in that: The cavity assembly further comprises: The baking tray is detachably placed in the cavity to divide the cooking cavity into at least two layers.

8. 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.

9. The cavity assembly according to any one of claims 1 to 8, characterized in that: The return air cavity is surrounded by an air duct, and the air duct connects the first air inlet, the first return air outlet, and the second return air outlet.

10. The cavity assembly according to any one of claims 1 to 8, characterized in that: The flow divider is an air hood, which is installed on the lower surface of the top plate and covers the first air inlet of the top plate.

11. The cavity assembly according to claim 10, characterized in that: The second air inlet is located on the bottom surface of the air hood, and the third air return port is located on the side surface of the air hood.

12. The cavity assembly according to any one of claims 1 to 8, 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 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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