Steaming and baking micro all-in-one machine

Abstract

The utility model relates to a steaming and baking micro all-in-one machine which comprises a machine box, an inner container, a centrifugal fan assembly, a microwave generation assembly and a cooling fan, the machine box is provided with an upper cavity, a lower cavity, an air inlet hole communicated with the upper cavity and an air outlet hole communicated with the upper cavity, and a mounting plate is constructed between the upper cavity and the lower cavity; an air guide plate mounted on the mounting plate is constructed between the air inlet hole and the air outlet hole to divide the upper cavity into a first heat dissipation chamber communicated with the air outlet hole and a second heat dissipation chamber communicated with the air inlet hole, the first heat dissipation chamber and the second heat dissipation chamber are communicated with each other, and the inner container is mounted in the lower cavity and provided with a waveguide interface for receiving microwaves; the centrifugal fan assembly is installed in the first heat dissipation chamber and covers the air outlet hole, the microwave generation assembly is installed in the second heat dissipation chamber and communicates with the waveguide interface, and the heat dissipation fan is installed in the second heat dissipation chamber and covers the air inlet hole, so that the compact layout in the case can be realized while the heat dissipation of the microwave generation assembly is realized; and the development direction of miniaturization of the steaming and baking micro all-in-one machine is met.

Description

Technical Field

[0001] This utility model relates to the technical field of steam oven and microwave integrated appliance, and in particular to a steam oven and microwave integrated appliance. Background Technology

[0002] In a variable frequency steam oven / grill / microwave combo, two key electronic components—a magnetron and a frequency converter—are required to achieve the variable frequency microwave function. These two components generate significant heat during operation. Current technology typically equips each of these components with a separate fan. However, such a heat dissipation structure occupies a large space in the chassis and is costly. Moreover, in actual operation, the airflow within the chassis is turbulent, which can easily cause the overall temperature of the chassis to rise. To solve this problem, existing solutions also incorporate separate air ducts within the chassis to house these two electronic components. However, this also requires reserving space within the chassis for installing the air ducts, which can easily result in a large space occupation for the entire chassis. This is inconsistent with the trend towards miniaturization in steam oven / grill / microwave combos. Utility Model Content

[0003] Given the existing problems of poor heat dissipation or low utilization of internal space in variable frequency steam ovens, it is necessary to provide a steam oven / grill combo.

[0004] A steam oven / grill combo, comprising:

[0005] The chassis has an upper cavity, a lower cavity, an air inlet communicating with the upper cavity, and an air outlet communicating with the upper cavity. A mounting plate is constructed between the upper cavity and the lower cavity. An air guide plate is constructed between the air inlet and the air outlet and mounted on the mounting plate to divide the upper cavity into a first heat dissipation chamber communicating with the air outlet and a second heat dissipation chamber communicating with the air inlet. The first heat dissipation chamber and the second heat dissipation chamber are interconnected.

[0006] The inner liner is installed in the lower cavity and is provided with a waveguide interface for receiving microwaves;

[0007] A centrifugal fan assembly is installed in the first heat dissipation chamber and covers the air outlet;

[0008] A microwave generating assembly is installed in the second heat dissipation chamber and connected to the waveguide interface; and a cooling fan is installed in the second heat dissipation chamber and covers the air inlet.

[0009] This configuration divides the upper cavity into two heat dissipation chambers via a guide plate, resulting in a compact internal space. Guided by the centrifugal fan assembly and the cooling fan, the airflow first enters the second heat dissipation chamber through the air inlet, then enters the first heat dissipation chamber, and finally exits through the air outlet. This airflow path effectively covers the microwave generating component installed in the second heat dissipation chamber and other components installed in the first heat dissipation chamber, resulting in better heat dissipation. Placing the microwave generating component, which generates a large amount of heat, in the first heat dissipation chamber and prioritizing its cooling by the cooling fan further improves heat dissipation efficiency.

[0010] In one embodiment, the side of the air guide plate away from the air inlet is spaced apart from the edge of the mounting plate to form a connecting hole in the upper cavity that connects the first heat dissipation chamber and the second heat dissipation chamber.

[0011] This design further optimizes the spatial layout of the upper cavity. By constraining the size of the air guide plate and its position relative to the mounting plate, the installation is simplified in the design. Since the connection hole can be made without the need for drilling, the processing difficulty is reduced and material waste is avoided.

[0012] In one embodiment, the air guide plate includes a fixing part fixedly connected to the mounting plate and an air guide part and a positioning part spaced apart from the fixing part. The air guide part is located between the air inlet and the air outlet, and the positioning part abuts against the inner wall of the upper cavity.

[0013] With this setup, the position of the air guide is first determined by the positioning part, and the fixing part makes it easy to fix the air guide plate to the mounting plate. In addition, the fixing part can also serve as the mounting base for the frequency converter, that is, the air guide plate and the frequency converter can be pre-assembled as a combination, which helps to simplify assembly.

[0014] In one embodiment, the air guide plate further includes a first extension extending from the air guide portion to the air inlet; and / or

[0015] The air guide plate also includes a second extension extending from the positioning portion to the air inlet.

[0016] This design reduces air leakage in the second heat dissipation chamber and ensures the stability of the airflow path.

[0017] In one embodiment, the centrifugal fan assembly has an air intake located in the communicating hole and an air exhaust vent covering the air outlet.

[0018] The air guide plate also includes a third extension extending from the side of the air guide portion away from the air inlet to the air intake.

[0019] This design helps to expel hot air from the second heat dissipation chamber in a timely manner, preventing excessive hot air from entering the first heat dissipation chamber and causing heat accumulation.

[0020] In one embodiment, the third extension is arc-shaped.

[0021] This design helps to better guide airflow to the air inlet of the centrifugal fan assembly, reducing turbulence and wind noise at the connecting holes.

[0022] In one embodiment, the microwave generating assembly includes a magnetron, a frequency converter, and a circuit board arranged sequentially at intervals from the air inlet to the connecting hole.

[0023] This linear arrangement allows for a compact layout in the upper cavity, a shorter airflow path, and higher heat dissipation efficiency.

[0024] In one embodiment, the chassis includes an outer frame having a front opening and a rear opening, a door assembly covering the front opening, and a rear panel covering the rear opening. The outer frame includes a top plate, a first side plate, a bottom plate, and a second side plate connected sequentially from end to end. The mounting plate is located between the top plate and the bottom plate and is fixedly connected to the first side plate and the second side plate on both sides to form the upper cavity and the lower cavity together with the outer frame and the rear plate.

[0025] The air inlet is located on the first side plate or the second side plate, and the air outlet is located on the side of the door assembly near the upper cavity.

[0026] With this configuration, the second heat dissipation chamber and the microwave generator assembly are located at the rear of the chassis, which helps to reduce the impact of vibration and noise from the microwave generator assembly on the user and improves the user experience.

[0027] In one embodiment, the outer frame is further provided with a positioning protrusion on the side near the air inlet, the positioning protrusion being used to abut against the cabinet panel.

[0028] With this design, in the installation scenario of a built-in cabinet, the cabinet panel is supported by the positioning protrusion and will not block the air intake of the chassis, ensuring smooth air intake of the chassis.

[0029] In one embodiment, the number of positioning convex hulls is at least two, and the horizontal projection points of at least two positioning convex hulls are arranged at intervals.

[0030] This design ensures that the first and second side panels are parallel to the cabinet panel during installation, thanks to the two positioning protrusions, thus guaranteeing smooth airflow at the air inlet. Attached Figure Description

[0031] Figure 1A schematic diagram of the chassis structure of a steam oven / grill combo provided in this application;

[0032] Figure 2 for Figure 1 Front view of the middle chassis;

[0033] Figure 3 for Figure 2 The chassis shown is a cross-sectional view along the AA direction;

[0034] Figure 4 for Figure 1 The diagram shows the internal structure of the upper cavity of the steam oven / grill combo.

[0035] Figure 5 for Figure 4 Schematic diagram of the structure of the central air guide plate;

[0036] Figure 6 for Figure 4 The diagram shows the upper cavity of the steam oven / grill combo.

[0037] Figure label:

[0038] 10. Chassis; 101. Upper cavity; 1011. First heat dissipation chamber; 1012. Second heat dissipation chamber; 1013. Connecting hole; 102. Lower cavity; 103. Air inlet; 104. Air outlet; 11. Outer frame; 111. Top plate; 112. Bottom plate; 113. First side plate; 114. Second side plate; 115. Positioning protrusion; 12. Door assembly; 13. Rear plate; 14. Mounting plate; 15. Air guide plate; 151. Fixing part; 152. Air guide part; 153. Positioning part; 154. First extension part; 155. Second extension part; 156. Third extension part; 30. Centrifugal fan assembly; 31. Centrifugal fan body; 32. Fan cover; 40. Microwave generator assembly; 41. Magnetron; 42. Inverter; 43. Circuit board; 50. Cooling fan. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] In a variable frequency steam oven / grill / microwave oven, two key electronic components, a magnetron and a frequency converter, are needed to realize the variable frequency microwave function. These two electronic components generate a lot of heat during operation. In the current technology, each of these two electronic components is usually equipped with a separate fan. However, such a heat dissipation structure takes up a lot of space in the chassis and is expensive. Moreover, in actual operation, the airflow inside the chassis is turbulent, which can easily cause the overall temperature of the chassis to rise. In order to solve this problem, existing solutions also set up separate air ducts in the chassis and house the two electronic components in the air ducts. However, this also requires reserving space in the chassis to install the air ducts, which is not conducive to optimizing the internal space layout of the chassis.

[0046] Therefore, it is necessary to provide a steam oven / grill combo unit with good heat dissipation and a compact and reasonable internal space layout.

[0047] Please see Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of a steam oven / grill combo provided in this application. Figure 2 for Figure 1 The front view of the chassis 10 shown is shown. Figure 3 for Figure 2 The cross-sectional view of the chassis 10 shown is along the AA direction. Figure 4 for Figure 3The diagram shows the internal structure of the upper cavity 101 of the steam oven / grill / microwave combination appliance. The steam oven / grill / microwave combination appliance provided in this application includes a chassis 10, an inner liner, a centrifugal fan assembly 30, a microwave generator assembly 40, and a cooling fan 50. The chassis 10 has an upper cavity 101, a lower cavity 102, an air inlet 103 communicating with the upper cavity 101, and an air outlet 104 communicating with the upper cavity 101. A mounting plate 14 is constructed between the upper cavity 101 and the lower cavity 102. A guide plate 15, mounted on the mounting plate 14, is constructed between the air inlet 103 and the air outlet 104 to cool the upper cavity. Cavity 101 is divided into a first heat dissipation chamber 1011 and a second heat dissipation chamber 1012 that are interconnected. Centrifugal fan assembly 30 is installed in the first heat dissipation chamber 1011 and covered by air outlet 104. Microwave generator assembly 40 is installed in the second heat dissipation chamber 1012. Heat dissipation fan 50 is installed in the second heat dissipation chamber 1012 and covered by air inlet 103. Inner liner is installed in the lower cavity 102 and is provided with a waveguide interface for receiving microwaves. Microwave generator assembly 40 is connected to the waveguide interface. Based on the above structure, the air guide plate 15 divides the upper cavity 101 into two heat dissipation chambers, making the space layout inside the upper cavity 101 compact. Under the guidance of the centrifugal fan assembly 30 and the heat dissipation fan 50, the airflow first enters the second heat dissipation chamber 1012 from the air inlet 103, then enters the first heat dissipation chamber 1011, and finally exits from the air outlet 104. The airflow path formed in this way can cover the microwave generating assembly 40 installed in the second heat dissipation chamber 1012 and other components installed in the first heat dissipation chamber 1011, resulting in a better heat dissipation effect. The microwave generating assembly 40, which generates a lot of heat, is arranged in the first heat dissipation chamber 1011, and the heat dissipation fan 50 is used to prioritize the heat dissipation of the microwave generating assembly 40, further improving the heat dissipation efficiency.

[0048] Please see Figure 4 and Figure 6 , Figure 6 for Figure 4 The diagram shows a plan view of the steam oven / grill combo. To further optimize the spatial layout within the upper cavity 101, in one embodiment provided in this application, the side of the air guide plate 15 away from the air inlet 103 is spaced apart from the edge of the mounting plate 14 to form a connecting hole 1013 within the upper cavity 101 that connects the first heat dissipation chamber 1011 and the second heat dissipation chamber 1012.

[0049] Please see Figure 4 and Figure 5 , Figure 5 for Figure 4A schematic diagram of the structure of the air guide plate 15. To facilitate the installation of the air guide plate 15, in one embodiment provided in this application, the air guide plate 15 includes a fixing part 151 fixedly connected to the mounting plate 14, and air guide parts 152 and positioning parts 153 spaced apart from the fixing part 151. The air guide part 152 is located between the air inlet 103 and the air outlet 104, and the positioning part 153 abuts against the inner wall of the upper cavity 101. In this way, the position of the air guide part 152 is first determined by the positioning part 153, and the fixing part 151 facilitates fixing the air guide plate 15 to the mounting plate 14. Furthermore, the fixing part 151 can also serve as a mounting base for the frequency converter 42, meaning that the air guide plate 15 and the frequency converter 42 can be pre-assembled as a combination, which simplifies assembly. Furthermore, since a working gap needs to be reserved between the two electronic components, magnetron 41 and inverter 42, the airflow is easily dispersed when it enters the working gap. In order to reduce air leakage and ensure the stability of the airflow path, the air guide plate 15 also includes a first extension 154 extending from the air guide part 152 to the air inlet 103 and a second extension 155 extending from the positioning part 153 to the air inlet 103. This can guide the airflow to continue passing through the inverter 42 and prevent the airflow from dispersing, thereby improving the heat dissipation effect.

[0050] like Figure 4 and Figure 5 As shown, in order to expel the hot air from the second heat dissipation chamber 1012 as quickly as possible and avoid the problem of excessive hot air entering the first heat dissipation chamber 1011 and causing heat accumulation, the centrifugal fan assembly 30 has an air intake located at the connecting hole 1013 and an exhaust port covered by the air outlet 104. Specifically, the centrifugal fan includes a fan cover 32 providing the exhaust port and air intake port and a centrifugal fan body 31 installed at the air intake port. In order to better guide the airflow to the centrifugal fan body 31, the air guide plate 15 also includes a third extension 156 extending from the side of the air guide portion 152 away from the air intake port 103 toward the air intake port. Specifically, the third extension 156 is arc-shaped, which also helps to reduce turbulence and wind noise at the connecting hole 1013.

[0051] like Figure 3 As shown, considering that the electronic components in the first heat dissipation chamber 1011 may also need to dissipate heat, in one embodiment provided in this application, an air gap is reserved between the air guide plate 15 and the top of the upper cavity 101. In this way, a portion of the cold airflow entering the second heat dissipation chamber 1012 enters the first heat dissipation chamber 1011 through the air gap and is used to directly dissipate heat for the electronic components installed in the first heat dissipation chamber 1011, thereby forming another airflow path.

[0052] like Figure 4 and Figure 6As shown, in one embodiment provided in this application, the magnetron 41, frequency converter 42 and circuit board 43 of the microwave generating component 40 are arranged sequentially and at intervals from the air inlet 103 to the connecting hole 1013. This linear arrangement is conducive to achieving a compact layout in the upper cavity 101, and the airflow path is also shorter, resulting in higher heat dissipation efficiency.

[0053] like Figure 1 , Figure 3 and Figure 4 As shown, the chassis 10 includes an outer frame 11, a door assembly 12, a rear panel 13, a mounting plate 14, and an air guide plate 15. The outer frame 11 includes a top plate 111, a first side plate 113, a bottom plate 112, and a second side plate 114 connected end to end to form a front opening and a rear opening. The rear plate 13 covers the rear opening. The door assembly 12 is installed in the front opening. The mounting plate 14 is located between the top plate 111 and the bottom plate 112 and is fixedly connected to the first side plate 113 and the second side plate 114 on both sides to form an upper cavity 101 and a lower cavity 102 with the outer frame 11 and the rear plate 13. Considering that the magnetron 41 vibrates greatly and has a high temperature when it is working, the air inlet 103 is located on the first side plate 113 or the second side plate 114, and the air outlet 104 is located on the side of the door assembly 12 near the upper cavity 101. The second heat dissipation chamber 1012 is located at the rear of the chassis 10, and the microwave generating assembly 40 is also located at the rear of the chassis 10. Considering the embedded installation scenario of this steam oven, besides the door assembly 12, the gaps between the outer frame 11 and the rear panel 13 and the cabinet panel are small, which can lead to the air inlet 103 being blocked during installation. This affects the heat dissipation of the magnetron 41 and the inverter 42. Therefore, a positioning protrusion 115 is provided on the side of the outer frame 11 near the air inlet 103. The positioning protrusion 115 abuts against the cabinet panel. During assembly, the cabinet panel is supported by the positioning protrusion 115 and will not block the air inlet 103, ensuring smooth airflow. Furthermore, there are at least two positioning protrusions 115, with their horizontal projection points spaced apart. During actual installation, it is necessary to ensure that these two positioning protrusions 115 abut against the cabinet panel, so that the cabinet panel and the first side panel 113 or the second side panel 114 can maintain relative horizontality, ensuring smooth airflow at the air inlet 103.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steam oven / grill combo, characterized in that, include: The chassis (10) has an upper cavity (101), a lower cavity (102), an air inlet (103) communicating with the upper cavity (101), and an air outlet (104) communicating with the upper cavity (101). A mounting plate (14) is constructed between the upper cavity (101) and the lower cavity (102). A guide plate (15) mounted on the mounting plate (14) is constructed between the air inlet (103) and the air outlet (104) to divide the upper cavity (101) into a first heat dissipation chamber (1011) communicating with the air outlet (104) and a second heat dissipation chamber (1012) communicating with the air inlet (103). The first heat dissipation chamber (1011) and the second heat dissipation chamber (1012) are interconnected. The inner liner is installed in the lower cavity (102) and is provided with a waveguide interface for receiving microwaves; Centrifugal fan assembly (30) is installed in the first heat dissipation chamber (1011) and covered by the air outlet (104). A microwave generating assembly (40) is mounted in the second heat dissipation chamber (1012) and connected to the waveguide interface; and A cooling fan (50) is installed in the second cooling chamber (1012) and covers the air inlet (103).

2. The steam oven / grill combo machine according to claim 1, characterized in that, The side of the air guide plate (15) away from the air inlet (103) is spaced apart from the edge of the mounting plate (14) to form a connecting hole (1013) in the upper cavity (101) that connects the first heat dissipation chamber (1011) and the second heat dissipation chamber (1012).

3. The steam oven / grill combo machine according to claim 2, characterized in that, The air guide plate (15) includes a fixing part (151) fixedly connected to the mounting plate (14) and an air guide part (152) and a positioning part (153) spaced apart from the fixing part (151). The air guide part (152) is located between the air inlet (103) and the air outlet (104), and the positioning part (153) abuts against the inner wall of the upper cavity (101).

4. The steam oven / grill combo machine according to claim 3, characterized in that, The air guide plate (15) further includes a first extension (154) extending from the air guide portion (152) toward the air inlet (103); and / or The air guide plate (15) also includes a second extension (155) extending from the positioning part (153) to the air inlet (103).

5. The steam oven / grill combo machine according to claim 3, characterized in that, The centrifugal fan assembly (30) has an air intake located in the connecting hole (1013) and an exhaust port covered by the air outlet (104); The air guide plate (15) also includes a third extension (156) extending from the side of the air guide portion (152) away from the air inlet (103) toward the air intake.

6. The steam oven / grill combo machine according to claim 5, characterized in that, The third extension (156) is arc-shaped.

7. The steam oven / grill combo according to any one of claims 2 to 6, characterized in that, The microwave generating assembly (40) includes a magnetron (41), a frequency converter (42), and a circuit board (43) arranged sequentially from the air inlet (103) to the connecting hole (1013).

8. The steam oven / grill combo machine according to any one of claims 1 to 6, characterized in that, The chassis (10) includes an outer frame (11) with a front opening and a rear opening, a door assembly (12) covering the front opening, and a rear plate (13) covering the rear opening. The outer frame (11) includes a top plate (111), a first side plate (113), a bottom plate (112), and a second side plate (114) connected in sequence from end to end. The mounting plate (14) is located between the top plate (111) and the bottom plate (112) and is fixedly connected to the first side plate (113) and the second side plate (114) on both sides to form the upper cavity (101) and the lower cavity (102) together with the outer frame (11) and the rear plate (13). The air inlet (103) is located on the first side plate (113) or the second side plate (114), and the air outlet (104) is located on the side of the door assembly (12) near the upper cavity (101).

9. The steam oven / grill combo machine according to claim 8, characterized in that, The outer frame (11) is also provided with a positioning protrusion (115) on the side near the air inlet (103), which is used to abut against the cabinet panel.

10. The steam oven / grill combo machine according to claim 9, characterized in that, The number of the positioning convex hulls (115) is at least two and the horizontal projection points of the at least two positioning convex hulls (115) are arranged at intervals.

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