Cooking equipment

Abstract

The utility model provides cooking equipment which comprises a first cavity, and the first cavity comprises a first inner container, a second inner container and a second inner container, a magnetron is arranged at the outlet end of the first air duct, and the magnetron is used for generating microwaves; the second air duct is located on the side, away from the first air duct, of the magnetron, and the second air duct is provided with an air inlet and an air outlet which communicate with the first inner container; the draught fan assembly is located at the inlet end of the first air channel and used for driving airflow to the magnetron and driving part of airflow to enter the first inner container at the same time. According to the cooking equipment, one fan assembly can be used for supplying air to the magnetron and the first inner container at the same time, meanwhile, the electric control structure and the frequency conversion plate can be effectively cooled, and operation is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly to a cooking device. Background Art

[0002] With the continuous improvement of people's pursuit of delicious food, cooking devices, with their unique double-cavity design, can synchronously perform various cooking methods such as steaming and baking, greatly improving cooking efficiency and food quality, and becoming important household appliances for improving the quality of life.

[0003] Traditional cooking devices arrange two cooking cavities longitudinally in sequence, which can be respectively used for cooking processes with different functions. For example, one at the bottom serves as a steam oven that can steam or bake food, and one at the top serves as a microwave oven that can quickly heat food; since cooking devices are usually installed in a local space in the kitchen, when the two cooking cavities work simultaneously, a large amount of heat will be generated. If the heat cannot be dissipated in time, the temperature at the top of the cooking device will rise, and even affect the operating stability of components such as magnetrons.

[0004] For this reason, Chinese Patent with Application No. 202210015546.9 discloses a cooking device, including a box body, a door body provided with a cooling air duct; a first air duct, the first air duct having a first air inlet and a first air outlet; the first air inlet is communicated with the cooling air duct; a first fan assembly, the first fan assembly including a first motor and a first fan blade, the first fan blade is arranged in the first air duct, and the first fan assembly is used to drive the air flow; and a magnetron, the magnetron is arranged at the first air outlet. This solution can reduce the temperature of the magnetron to ensure its service life, but this solution cannot drive the air flow in the cooking cavity, which will cause condensation water on the side wall of the cooking cavity and affect the user experience.

[0005] In view of this, the present utility model is particularly proposed. Summary of the Utility Model

[0006] The problem solved by the present utility model is that the structure of the existing cooking device is unreasonable, the production cost is relatively high, and the heat dissipation effect is not good.

[0007] To solve the above problems, the present utility model provides a cooking device, including a first cavity, the first cavity including: a first inner container, the first inner container having a receiving cavity for receiving food; a first air duct, the first air duct being located above the first inner container and a magnetron being arranged at the outlet end, the magnetron being used for generating microwaves; a second air duct, the second air duct being located on the side of the magnetron away from the first air duct, the second air duct having an air inlet and an air outlet communicated with the first inner container; a fan assembly, the fan assembly being located at the inlet end of the first air duct, for driving the air flow towards the magnetron, and at the same time driving part of the air flow into the first inner container.

[0008] This setting can drive the air flow towards the magnetron for heat dissipation through a single fan assembly. At the same time, it can drive part of the air flow into the first inner cavity, so that water vapor, oil droplets, etc. generated in the first inner cavity during food heating are discharged into the second air duct along with the air, ensuring that the first inner cavity is always in a clean state. Only one fan assembly is required for driving, with a reasonable structural layout and low energy consumption.

[0009] Preferably, a mounting plate is provided at the top of the first inner cavity. The first air duct and the second air duct are fixedly arranged on the mounting plate, and an electric control structure is arranged on the mounting plate, and the electric control structure is arranged close to the fan assembly.

[0010] This setting enables the air around the electric control structure to passively flow into the first air duct when the fan assembly conveys air into the first air duct, thereby taking away the heat generated by the electric control structure. At the same time, the electric control structure is located at the inlet end of the first air duct, ensuring that it will not be affected by the magnetron and always being within a reasonable temperature range, further ensuring the stable and reliable operation of the cooking device.

[0011] Preferably, the cooking device further includes a variable frequency board, and the variable frequency board is located in the first air duct. This setting can first use the fan assembly to dissipate heat from the variable frequency board, and then dissipate heat from the magnetron, so as to ensure that each electrical component meets the requirements of the temperature rise test.

[0012] Preferably, the first air duct and the second air duct are hermetically connected through the magnetron. The minimum air passing area of the first air duct in the direction perpendicular to the air flow direction is S1, and the maximum air passing area of the magnetron in the direction perpendicular to the air flow direction is S2, where S1 > S2.

[0013] This setting allows part of the air entering the first air duct to be used for dissipating heat from the variable frequency board, and at the same time, all the air entering the first air duct can be used for dissipating heat from the magnetron, ensuring that part of the air directly dissipates heat from the magnetron without contacting the variable frequency board, so as to take into account the heat dissipation effects of both at the same time.

[0014] Preferably, the second air duct includes a second housing. The inlet end of the second housing is arranged lower than the outlet end. The air outlet is arranged close to the outlet end and is formed by partial downward depression of the second housing. A baffle rib is arranged on one side of the air outlet close to the inlet end. This setting can block the air flow out of the second air duct, so that part of the air enters the first inner cavity through the air inlet. The structure is simple and convenient for production and processing.

[0015] Preferably, the second air duct includes a second air hood which is horizontally arranged and covers the upper part of the second housing. The minimum distances between the baffle rib, the second housing and the second air hood are H1 and H2, where H1 = (0.6 - 0.8) * H2. This setting can ensure that the air flow out of the second air duct does not enter the first inner container from the air outlet, enabling the air in the first inner container to circulate and be discharged normally. Preferably, the baffle rib is located on the left and right sides and the rear side of the air outlet.

[0016] Preferably, the inlet end of the second air duct gradually expands towards the outlet end. The air inlet is adjacent to the magnetron, and the air inlet penetrates through the mounting plate and communicates with the first inner container. This setting can enable more air to enter the first inner container, and the circulation effect is good.

[0017] Preferably, a connecting member is arranged below the air outlet. The connecting member passes through the mounting plate and is connected to the first inner container; the horizontal cross-sectional areas of the air inlet and the air outlet are S3 and S4, where S3 < S4. This setting makes the air flow speed of the air inlet into the first inner container relatively large, thereby driving the air to flow through the connecting member towards the air outlet at a high position and finally re-entering the second air duct.

[0018] Preferably, the cooking device further includes a second cavity and a housing. The second cavity has a second inner container and is located below the first cavity. The first cavity and the second cavity are installed in the housing. The housing includes a rear cover, and the rear cover is provided with a plurality of air passing openings. This setting can balance the internal and external air pressures of the cooking device, with low operating resistance of the fan assembly and low energy consumption.

[0019] Compared with the prior art, the cooking device according to the embodiment of the present invention has the following beneficial effects: 1) One fan assembly can be used to drive the air flow to the magnetron for heat dissipation, and at the same time, part of the air enters the first inner container, so as to discharge the water vapor, oil droplets, etc. generated by heating the food along with the air; 2) The structural layout is reasonable, which can effectively dissipate heat from the electric control structure and the frequency conversion board at the same time, and the operation is stable and reliable; 3) The structure is simple and convenient for production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall schematic diagram of the cooking device according to the embodiment of the present invention;

[0021] Figure 2 is the internal structure schematic diagram of the cooking device according to the embodiment of the present invention;

[0022] Figure 3 is the structural schematic diagram of the cooking device of the present invention after removing the first air guide hood and the second air guide hood;

[0023] Figure 4 isFigure 1 Schematic cross-sectional view of the cooking device along the A-A side described in

[0024] Figure 5 is Figure 4 Partial enlarged view at B in

[0025] Explanation of reference numerals:

[0026] 100 - Cooking device; 10 - First cavity; 11 - First inner container; 12 - Mounting plate; 13 - First air duct; 131 - First air hood; 132 - First housing; 14 - Second air duct; 141 - Second air hood; 142 - Second housing; 1421 - Air inlet; 1422 - Air outlet; 1423 - Baffle rib; 143 - Air outlet hole; 15 - Magnetron; 16 - Inverter board; 17 - Fan assembly; 18 - Connecting piece; 19 - Electric control structure; 20 - Second cavity; 21 - Second inner container; 30 - Housing; 31 - Rear cover; 311 - Air passing hole. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model is given with reference to the accompanying drawings. On the premise of no conflict, the technical features of the present utility model can be combined with each other.

[0028] It should be noted that all terms indicating directions and positions in the present utility model, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection situation between components in a certain specific state (as shown in the accompanying drawings), and are only for the convenience of describing the present utility model, rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] As Figures 1-5 shown, a cooking device 100 includes a first cavity 10, and the first cavity 10 includes:

[0032] A first inner container 11, the first inner container 11 having a containing cavity for containing food;

[0033] A first air duct 13, the outlet end of the first air duct 13 is provided with a magnetron 15, and the magnetron 15 is used for generating microwaves;

[0034] A second air duct 14, the second air duct 14 is located on the side of the magnetron 15 away from the first air duct 13, and the second air duct 14 has an air inlet 1421 and an air outlet 1422 communicating with the first inner container 11;

[0035] A fan assembly 17, the fan assembly 17 is located at the inlet end of the first air duct 13, and is used for driving air flow towards the magnetron 15, and at the same time driving part of the air flow into the first inner container 11.

[0036] This setting can drive the air flow towards the magnetron 15 for heat dissipation through one fan assembly 17, and at the same time can drive part of the air flow into the first inner container 11, so that water vapor, oil droplets, etc. generated in the first inner container 11 when heating food are discharged into the second air duct 14 along with the air, ensuring that the first inner container 11 is always in a clean state; only one fan assembly 17 is needed for driving, the structural layout is reasonable and the energy consumption is low. The first cavity 10 further includes components such as a waveguide box, and its specific structure and assembly relationship are prior art and will not be elaborated here.

[0037] As an example of the present invention, the cooking device 100 further includes a mounting plate 12, on which an electric control structure 19 and a first air duct 13 are provided. The electric control structure 19 is arranged close to the fan assembly 17. This arrangement enables the air around the electric control structure 19 to flow passively into the first air duct 13 when the fan assembly 17 conveys air into the first air duct 13, thereby taking away the heat generated by the electric control structure 19. At the same time, the electric control structure 19 is located at the inlet end of the first air duct 13, ensuring that it is not affected by the magnetron 15 and always within a reasonable temperature range, further ensuring the stable and reliable operation of the cooking device 100.

[0038] As an example of the present utility model, the cooking device 100 further includes a variable frequency board 16, which is located in the first air duct 13. This arrangement can utilize the fan assembly 17 to dissipate heat from the variable frequency board 16 first, and then dissipate heat from the magnetron 15, thereby ensuring that each electrical component meets the requirements of the temperature rise test.

[0039] Preferably, the first air duct 13 and the second air duct 14 are hermetically connected through the magnetron 15. The minimum vertical cross-sectional area of the first air duct 13 in the direction perpendicular to the air flow direction is S1, and the maximum vertical cross-sectional area of the magnetron 15 in the direction perpendicular to the air flow direction is S2, where S1 > S2. This arrangement allows part of the air entering the first air duct 13 to be used for dissipating heat from the variable frequency board 16, and at the same time, all the air entering the first air duct 13 can be used for dissipating heat from the magnetron 15, ensuring that part of the air directly dissipates heat from the magnetron 15 without contacting the variable frequency board 16, thereby taking into account the heat dissipation effects of both.

[0040] Preferably, the first air duct 13 includes a first air hood 131 and a first housing 132. The first housing 132 is fixedly installed on the mounting plate 12, and the first air hood 131 covers the upper part of the first housing 132. This arrangement has a simple structure and is convenient for production and processing. Preferably, the first air hood 131 partially covers the heat dissipation fins of the magnetron 15.

[0041] Preferably, the second air duct 14 includes a second air hood 141 and a second housing 142. The second air hood 141 is disposed above the second housing 142. The inlet end of the second housing 142 near the magnetron 15 is lower than the outlet end. The air outlet 1422 is disposed near the outlet end. The air inlet 1421 is disposed adjacent to the magnetron 15. The air inlet 1421 passes through the mounting plate 12 and communicates with the first inner container 11. The air outlet 1422 is formed by partial downward depression of the second housing 142 and a retaining rib 1423 is disposed on one side of the inlet end. This setting can block the air flow out of the second air duct 14, so that part of the air enters the first inner container 11 through the air inlet 1421. The structure is simple and convenient for production and processing.

[0042] Preferably, the minimum distances between the retaining rib 1423, the second housing 142 and the second air hood 141 are H1 and H2, where H1 = (0.6 - 0.8) * H2. This setting can ensure that the air flow out of the second air duct 14 does not enter the first inner container 11 from the air outlet 1422, so that the air in the first inner container 11 can circulate and be discharged normally. Preferably, the retaining rib 1423 is located on the left and right sides and the rear side of the air outlet 1422.

[0043] As an example of the present invention, a connecting member 18 is disposed below the air outlet 1422. The connecting member 18 passes through the mounting plate 12 and is connected to the first inner container 11. This setting has a simple structure and can collect the air in the first inner container 11 and discharge it into the second air duct 14 through the air outlet 1422. Preferably, the horizontal cross-sectional areas of the air inlet 1421 and the air outlet 1422 are S3 and S4, where S3 < S4. This setting makes the air flow velocity of the air inlet of the first inner container 11 larger, so as to drive the air to flow through the connecting member 18 to the air outlet 1422 at a high position and finally enter the second air duct 14 again.

[0044] As an example of the present invention, an air outlet hole 143 is disposed at the outlet end of the second air duct 14 for blowing air to the front side of the cooking device 100. The cooking device 100 further includes a housing 30. The first cavity 10 is located in the housing 30. The housing 30 includes a rear cover 31, and a plurality of air passing holes 311 are disposed on the rear cover 31. This setting can balance the internal and external air pressures of the cooking device 100, and the operating resistance of the fan assembly 17 is small.

[0045] Preferably, the cooking device 100 further includes a second cavity 20. The second cavity 20 has a second inner container 21 and is located below the first cavity 10. The second cavity 20 includes components such as a steam generating device, a water tank, and a heating assembly. The specific structure and assembly relationship thereof are prior art and will not be described in detail herein.

[0046] After the fan assembly 17 operates, the air between the first cavity 10 and the housing 30 is conveyed into the first air duct 13. The air flow can take away the heat generated by the electronic control structure 19. Part of the air entering the first air duct 13 flows through the frequency conversion board 16 and dissipates heat from it. All the air will pass through the heat dissipation fins of the magnetron 15 and dissipate heat from it, and then enter the second air duct 14. Part of the air entering the second air duct 14 is discharged forward through the air outlet holes 143. Since the blocking ribs 1423 block the air outlet flow, part of the air will enter the first inner liner 11 through the air inlet 1421, enter the second air duct 14 again through the air outlet 1422 and is finally discharged, so as to realize the heat dissipation of the first cavity 10 and ensure its stable and reliable operation.

[0047] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A cooking device, comprising a first cavity (10), characterized in that, The first cavity (10) includes: A first inner container (11), which has a containing cavity for containing food; A first air duct (13), which is located above the first inner container (11) and has a magnetron (15) at its outlet end, and the magnetron (15) is used to generate microwaves; A second air duct (14), which is located on the side of the magnetron (15) away from the first air duct (13), and the second air duct (14) has an air inlet (1421) and an air outlet (1422) communicating with the first inner container (11); A fan assembly (17), which is located at the inlet end of the first air duct (13) and is used to drive air flow towards the magnetron (15) and at the same time drive part of the air flow into the first inner container (11).

2. The cooking device according to claim 1, wherein, An installation plate (12) is provided at the top of the first inner container (11), the first air duct (13) and the second air duct (14) are fixedly arranged on the installation plate (12), and an electric control structure (19) is provided on the installation plate (12), and the electric control structure (19) is arranged close to the fan assembly (17).

3. The cooking device according to claim 1, wherein The cooking device (100) further includes a frequency conversion board (16), and the frequency conversion board (16) is located in the first air duct (13).

4. The cooking device according to claim 3, wherein The first air duct (13) and the second air duct (14) are hermetically connected through the magnetron (15). The minimum air passing area of the first air duct (13) in the direction perpendicular to the air flow direction is S1, and the maximum air passing area of the magnetron (15) in the direction perpendicular to the air flow direction is S2, where S1 > S2.

5. The cooking device according to claim 1, characterized in that, The second air duct (14) includes a second housing (142). The inlet end of the second housing (142) is arranged lower than the outlet end. The air outlet (1422) is arranged close to the outlet end and is formed by partial downward depression of the second housing (142). A baffle rib (1423) is arranged on the side of the air outlet (1422) close to the inlet end.

6. The cooking device according to claim 5, characterized in that, The second air duct (14) includes a second air hood (141), which is horizontally arranged and covers the second housing (142). The minimum distances between the baffle rib (1423), the second housing (142) and the second air hood (141) are H1 and H2 respectively, where H1 = (0.6 - 0.8) * H2.

7. The cooking device according to claim 5, wherein The baffle rib (1423) is located on the left and right sides and the rear side of the air outlet (1422).

8. The cooking device according to claim 5, characterized in that, The air inlet (1421) is adjacent to the magnetron (15), and the air inlet (1421) passes through the installation plate (12) and communicates with the first inner container (11).

9. The cooking device according to claim 8, wherein, A connecting piece (18) is arranged below the air outlet (1422). After passing through the installation plate (12), the connecting piece (18) is connected to the first inner container (11); the horizontal cross-sectional areas of the air inlet (1421) and the air outlet (1422) are S3 and S4 respectively, where S3 < S4.

10. The cooking device according to claim 1, characterized in that, The cooking device (100) further includes a second cavity (20) and a housing (30). The second cavity (20) has a second inner container (21) and is located below the first cavity (10). The first cavity (10) and the second cavity (20) are installed in the housing (30). The housing (30) includes a rear cover (31), and the rear cover (31) is provided with a plurality of air vents (311).

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