Microwave stirring device and cooking equipment

Abstract

The utility model provides a kind of microwave stirring device and cooking equipment, the microwave stirring device is arranged on waveguide assembly and include motor, the motor is connected with the stirrer transmission by connecting rod, for driving the rotation of the stirrer;The microwave stirring device further include inductive piece electrically connected with control module, the inductive piece is located the side portion of the connecting rod and with the connecting rod not contact, the connecting rod is provided with extension plate, the extension plate rotates synchronously with connecting rod, the inductive piece extension plate passes and can produce signal.The utility model can monitor whether stirrer is normal in real time, avoid to appear security risk due to stirrer abnormal work;Without physical contact between connecting rod and inductive piece, small operating resistance also can avoid the contact oxidation or elasticity failure caused by friction of traditional microswitch, to prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and more specifically, to a microwave stirring device and cooking equipment. Background Technology

[0002] As microwave ovens become the core device for quickly heating food in modern households, their core principle relies on the high-frequency microwaves (usually 2.45 GHz) generated by the magnetron to excite the intense vibration and friction of molecules (especially water molecules) inside the food, thereby achieving efficient heat energy conversion; in order to ensure that the microwaves entering the cavity are evenly dispersed, a motor-driven stirrer needs to be installed.

[0003] Because microwave stirring mechanisms are usually hidden, it is not possible to directly observe whether the stirrer is rotating properly during cooking. If the motor is damaged or the stirrer stops rotating for other reasons, the heating uniformity will be poor because the microwaves cannot be evenly distributed. Furthermore, microwave focusing heating can easily occur, causing heat to concentrate and potentially damaging the plate or even causing sparking, which seriously affects the user experience.

[0004] To address this, Chinese Patent Application No. 201110435066.X discloses a detection device for the microwave stirring mechanism of a flatbed microwave oven. The device includes a detection mechanism for detecting whether the motor of the microwave stirring mechanism is operating normally; and an execution mechanism connected to the signal output terminal of the detection mechanism for promptly cutting off the power supply to the electric heating element of the flatbed microwave oven when the detection mechanism detects abnormal motor operation. This solution can promptly detect abnormal operation of the drive motor, improving safety. However, the mechanical contact method increases rotational resistance, and the high motor power results in high energy consumption. Furthermore, the electromagnet is prone to demagnetization under high temperatures, affecting the reliability of the detection. These limitations make it difficult to meet the usage requirements of a microwave oven.

[0005] In view of the above, this utility model is hereby proposed. Utility Model Content

[0006] The problem solved by this invention is that the existing microwave stirring device has an unreasonable structure and poor reliability in detecting whether the stirrer is working properly, especially for cooking equipment with dual magnetrons.

[0007] To address the aforementioned problems, this utility model provides a microwave stirring device for use in cooking equipment. The cooking equipment includes a connected magnetron assembly and a waveguide assembly. The waveguide assembly guides microwaves generated by the magnetron assembly into a heating cavity for cooking food. The microwave stirring device is mounted on the waveguide assembly and includes a motor. The motor is connected to the stirrer via a connecting rod to drive the rotation of the stirrer. The microwave stirring device also includes a sensor electrically connected to a control module. The sensor is located on the side of the connecting rod and does not contact the connecting rod. The connecting rod has an extension plate that rotates synchronously with the connecting rod. The sensor generates a signal when the extension plate passes by.

[0008] This setup, through the cooperation of the sensor and the extension plate, can monitor in real time whether the microwave stirring device is operating normally, avoiding safety hazards caused by abnormal operation of the microwave stirring device; in addition, there is no physical contact between the sensor and the extension plate, avoiding contact oxidation or elastic failure caused by friction in traditional microswitches, extending the life to more than 10,000 cycles; by installing the sensor on the side, it does not occupy the axial space of the connecting rod, making the structure more compact.

[0009] Preferably, the microwave stirring device includes a second bracket fixed to the waveguide assembly for fixing the motor and the sensor, wherein the sensor is a Hall element or an infrared photoelectric sensor.

[0010] This design, by using a second bracket, shields the sensor from the heating chamber, further improving operational stability and reliability. Preferably, the second bracket is replaced by the first bracket for fixing the sensor. This design, by having the second bracket and the first bracket installed independently, prevents motor vibration from being directly transmitted to the sensor, thus improving the stability of the detection signal.

[0011] Preferably, the second bracket portion protrudes towards the side closer to the motor to form a first protrusion, the first protrusion having a first mounting hole. The waveguide assembly includes a first waveguide box, the first waveguide box portion protruding away from the motor to form a second protrusion, the second protrusion having a second mounting hole, the second mounting hole being opposite to the first mounting hole, the outer edge of the second mounting hole having an annular rib extending towards the side closer to the motor, the connecting rod sequentially passing through the first mounting hole and the second mounting hole, and then connecting to the stirrer.

[0012] This design, by forming a cavity between the first and second protrusions, effectively prevents microwaves leaking from the first mounting hole from being conducted outwards. The annular rib and the connecting rod form a closed conductive circuit, confining microwave leakage within the first waveguide box, further reducing the microwave leakage to below .mW / cm², effectively reducing the impact of microwave oven leakage on the normal operation of the sensing element.

[0013] Preferably, a connector is provided at the end of the heat-insulating connecting rod away from the motor. The connector is plugged into and fixed to the stirrer. A connecting bushing is provided on the outside of the connector. The connector can rotate relative to the connecting bushing under the action of the connecting rod. The connecting bushing is fixed on the heating chamber and can support the stirrer.

[0014] This setup uses a plug-in connection between the connector and the stirrer to ensure a secure connection between the two, preventing the stirrer from loosening or falling off during operation. At the same time, the connecting bushing is fixed to the bottom or side wall of the heating cavity, providing stable support for the stirrer and enhancing its operational stability. This allows the stirrer to rotate flexibly under the drive of the connecting rod, which helps to evenly distribute microwaves within the microwave oven cavity and improves the heating effect.

[0015] Preferably, the connecting rod is made of a non-metallic heat-insulating material. This design, through the heat insulation effect of the connecting rod, makes the motor less susceptible to high temperatures during operation, thereby reducing heat loss and the risk of overheating, improving the motor's operating efficiency and service life, ensuring the smooth rotation of the stirrer, and ultimately making the microwaves more evenly distributed within the microwave oven cavity.

[0016] Preferably, the connecting rod includes a first connecting portion with a first insertion hole for connecting the motor shaft; it also includes a second connecting portion that can extend into the connector and drive it to rotate as a whole. This integrated rotation of the connecting rod and the agitator ensures efficient power transmission, thereby simplifying the assembly process and improving the overall structural stability and rotational efficiency.

[0017] The present invention also provides a cooking device, including a heating cavity, wherein the magnetron assembly includes a first magnetron disposed at the bottom of the heating cavity, the waveguide assembly includes a first waveguide box, the first magnetron introduces microwaves from the rear side of the heating cavity through the first waveguide box, and the aforementioned microwave stirring device is disposed on the first waveguide box.

[0018] Preferably, the magnetron assembly further includes a second magnetron located at the bottom of the heating cavity, and the waveguide assembly further includes a second waveguide box. The second magnetron introduces microwaves from the bottom of the heating cavity through the second waveguide box, and the microwave stirring device is disposed on the second waveguide box.

[0019] Preferably, a heat insulation frame assembly is provided around the heating cavity, a heat insulation component is provided between the heating cavity and the heat insulation frame assembly, the heat insulation component is snapped into the heat insulation frame assembly, and the heat insulation frame assembly is connected to the heating cavity.

[0020] This design effectively prevents heat from the heating chamber from being transferred to the outside. On the one hand, it provides thermal insulation, preventing heat from the heating chamber from being transferred to electrical components such as the first and second magnetrons, thus reducing the heat dissipation load on the electrical components. On the other hand, it effectively concentrates heat in the heating chamber, ensuring a good heating rate inside the chamber, which can quickly reach the required cooking temperature, thus improving cooking efficiency and ensuring cooking results. It also reduces energy loss and waste caused by heat transfer from the oven cavity to the outside, effectively reducing electricity consumption under the same cooking conditions.

[0021] Preferably, the cooking device further includes a separator, which is horizontally arranged within the heating cavity. The separator shields microwaves and divides the heating cavity into a first space and a second space arranged vertically. The first magnetron and the second magnetron are used to selectively transmit microwaves into the first space and the second space, respectively. This arrangement allows for selective heating of the first space and / or the second space, avoiding heating the entire heating cavity when there is little food, thereby significantly reducing energy consumption. It is particularly suitable for regions with stringent requirements for low power and high energy efficiency.

[0022] Compared with the prior art, the microwave stirring device and cooking equipment described in this utility model embodiment have the following beneficial effects: 1) It can monitor whether the stirrer is operating normally in real time, avoiding safety hazards caused by abnormal operation of the stirrer; 2) Since there is no physical contact between the connecting rod and the sensing element, the running resistance is small, which can also avoid the oxidation of contacts or elastic failure of traditional microswitches due to friction, thereby extending the service life; 3) The assembly relationship between the annular rib and the connecting rod can limit microwave leakage and reduce the impact of microwave oven leakage on the normal operation of the sensing element; and the cavity formed between the first protrusion and the second protrusion can further prevent microwave leakage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall cooking equipment described in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the cooking equipment described in an embodiment of the present utility model;

[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0026] Figure 4 for Figure 1 Schematic diagram of the longitudinal section along side AA;

[0027] Figure 5 for Figure 1 Schematic diagram of the longitudinal section along the BB side;

[0028] Figure 6 This is a schematic diagram of the connecting rod described in an embodiment of the present utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Heating chamber; 2-Heat insulation frame assembly; 3-Microwave stirring device; 31-Motor; 32-Connecting rod; 321-First connecting part; 322-Second connecting part; 323-Extension plate; 324-First insertion hole; 33-Stirrer; 34-First bracket; 35-Induction element; 36-Second bracket; 361-First protrusion; 37-Connector; 38-Connecting bushing; 4-First waveguide box; 41-Second protrusion; 411-Annular rib; 5-First magnetron; 6-Second waveguide box; 7-Second magnetron; 8-Base; 9-Separator; 10-Door assembly; 11-Outer shell. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Without conflict, the technical features of this utility model can be combined with each other.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Traditional microwave ovens, equipped with a single magnetron, are prone to overheating after prolonged high-load operation, leading to power decay and a significant reduction in heating efficiency. This makes it difficult to meet the needs of home users for rapid defrosting and even cooking. To address this, microwave ovens with dual magnetrons have emerged, which are widely welcomed by users because they drive two magnetrons to operate alternately to maintain a continuously efficient heating state.

[0035] For microwave ovens with dual magnetrons, two waveguide boxes are typically used to introduce microwaves into the cooking cavity. To ensure uniform microwave dispersion, each waveguide box needs to contain a microwave stirring device. Compared to conventional microwave ovens, the probability of at least one of the two microwave stirring devices not stopping rotating increases by nearly double, posing a significant safety hazard. Furthermore, because dual magnetron microwave ovens not only have high output power but also operate at high temperatures, even slight microwave leakage and high-temperature environments can severely affect the accuracy of detection, especially for microwave ovens with baking functions. Therefore, the applicant proposes the following technical solution:

[0036] like Figure 1-6 As shown, a microwave stirring device 3 is used in a cooking device. The cooking device includes a connected magnetron assembly and a waveguide assembly. The waveguide assembly is used to guide the microwaves generated by the magnetron assembly into a heating cavity 1 to cook food. The microwave stirring device 3 is mounted on the waveguide assembly and includes a motor 31. The motor 31 is connected to the stirrer 33 via a connecting rod 32 and is used to drive the rotation of the stirrer 33. The microwave stirring device 3 also includes a sensor 35 electrically connected to a control module. The sensor 35 is located on the side of the connecting rod 32 and does not contact the connecting rod 32. The connecting rod 32 is provided with an extension plate 323. The extension plate 323 rotates synchronously with the connecting rod 32 and generates a signal when it passes the sensor 35.

[0037] This setup, through the cooperation of the sensor 35 and the extension plate 323, enables real-time monitoring of whether the microwave stirring device 3 is operating normally, avoiding safety hazards caused by malfunctions of the microwave stirring device 3. Furthermore, the sensor 35 and the extension plate 323 have no physical contact, avoiding contact oxidation or elastic failure caused by friction in traditional microswitches, extending the lifespan to over 100,000 cycles. By mounting the sensor 35 laterally, it does not occupy the axial space of the connecting rod 32, resulting in a more compact structure. Preferably, the sensor 35 is a magnetic sensor.

[0038] Preferably, the connecting rod 32 is made of a non-metallic heat-insulating material. This design allows the motor 31 to be less susceptible to high temperatures during operation through the heat insulation effect of the connecting rod 32, thereby reducing heat loss and the risk of overheating, improving the operating efficiency and service life of the motor 31, ensuring the smooth rotation of the stirrer 33, and thus making the microwaves more evenly distributed in the microwave oven cavity.

[0039] As an example of this utility model, the microwave stirring device 3 includes a second bracket 36 fixed to the waveguide assembly for fixing the motor 31. A first bracket 34 is disposed on one side of the second bracket 36, and the sensing element 35, which is a Hall element or an infrared photoelectric sensor, is fixedly disposed on the first bracket 34. This arrangement, by independently installing the second bracket 36 and the first bracket 34, avoids the vibration of the motor 31 being directly transmitted to the sensing element 35, thus improving the stability of the detection signal. By setting the second bracket 36, the sensing element 35 can be shielded from the heating cavity 1, further improving the operational stability and reliability. Preferably, the first bracket 34 is made of galvanized steel plate or aluminum alloy, forming a Faraday cage effect, reducing the interference of the Hall element caused by magnetron radiation by 90%.

[0040] Preferably, the second bracket 36 protrudes towards the side closer to the motor 31 to form a first protrusion 361. The first protrusion 361 is provided with a first mounting hole. The waveguide assembly includes a first waveguide box 4. The first waveguide box 4 protrudes away from the motor 31 to form a second protrusion 41. The second protrusion 41 is provided with a second mounting hole. The second mounting hole is opposite to the first mounting hole. The outer edge of the second mounting hole is provided with an annular rib 411. The annular rib 411 extends towards the side closer to the motor 31. The connecting rod 32 passes through the first mounting hole and the second mounting hole in sequence, and then connects to the stirrer 33.

[0041] This design forms a cavity between the first protrusion 361 and the second protrusion 41, which can effectively prevent microwaves leaking from the first mounting hole from being conducted outward. The annular rib 411 and the connecting rod 32 form a closed conductive circuit, which limits microwave leakage within the first waveguide box 4, further reducing the microwave leakage to below 0.3mW / cm², effectively reducing the impact of microwave oven leakage on the normal operation of the sensing element 35.

[0042] As an example of this utility model, a connector 37 is provided at the end of the heat-insulating connecting rod 32 away from the motor 31. The connector 37 is inserted and fixed to the stirrer 33. A connecting bushing 38 is provided on the outside of the connector 37. The connector 37 can rotate relative to the connecting bushing 38 under the driving action of the connecting rod 32. The connecting bushing 38 is fixed on the heating chamber 1 and can support the stirrer 33.

[0043] This setup uses a plug-in connection between the connector 37 and the stirrer 33 to ensure a secure connection between the two, preventing the stirrer 33 from loosening or falling off during operation. At the same time, the connecting bushing 38 is fixed to the bottom or side wall of the heating cavity 1, providing stable support for the stirrer 33 and enhancing its operational stability. This allows the stirrer 33 to rotate flexibly under the drive of the connecting rod 32, which helps to distribute microwaves evenly within the microwave oven cavity and improves the heating effect.

[0044] As an example of this utility model, the connecting rod 32 includes a first connecting portion 321, one part of which is provided with a first insertion hole 324 for connecting the rotating shaft of the motor 31; it also includes a second connecting portion 322, which can extend into the connector 37 and drive it to rotate as a whole. This arrangement of the connecting rod 32 and the stirrer 33 to rotate as a whole ensures the effective transmission of power, thereby simplifying the assembly process and improving the stability and rotation efficiency of the overall structure.

[0045] As an example of this utility model, the connecting bushing 38 includes a bushing plate, on which a third limiting flange is provided. The third limiting flange is used to accommodate the limiting connector 37 and support the stirrer 33. On opposite sides of the bushing plate, a first connecting plate and a first plug-in block are respectively provided. The first plug-in block is plugged into and positioned with the heating chamber 1, and the first connecting plate is fixed to the heating chamber 1 with screws.

[0046] This design, through the cleverly designed third limiting flange, ensures the stable positioning of the connector 37 and supports the agitator 33, thereby improving the overall structural stability. Simultaneously, the screw fixing and plug-in positioning design between the connecting sleeve 38 and the heating chamber 1 simplifies the installation process, enabling quick and accurate assembly. Furthermore, the anti-foolproof plate and the first plug-in block effectively prevent installation errors, further ensuring the stable installation of the connecting sleeve 38. This achieves an efficient and stable connection between the agitator 33, the connector 37, and the connecting sleeve 38.

[0047] Preferably, a fifth connecting hole is provided on the first connecting plate, and the first connecting plate is fixed to the heating cavity 1 by connecting screws passing through the fifth connecting hole. A foolproof plate is provided on the side of the bushing plate away from the first connecting plate, and the first insertion block is provided on the lower surface of the first connecting plate and extends out of the foolproof plate, thereby realizing quick insertion and positioning of the connecting bushing 38 and the heating cavity 1 during installation.

[0048] This utility model also provides a cooking device, including a heating cavity 1. The magnetron assembly includes a first magnetron 5 located at the bottom of the heating cavity 1. The waveguide assembly includes a first waveguide box 4. The first magnetron 5 introduces microwaves from the rear side of the heating cavity 1 through the first waveguide box 4. The microwave stirring device 3 is provided on the first waveguide box 4.

[0049] Preferably, the magnetron assembly further includes a second magnetron 7 located at the bottom of the heating cavity 1, and the waveguide assembly further includes a second waveguide box 6. The second magnetron 7 introduces microwaves from the bottom of the heating cavity 1 through the second waveguide box 6, and the microwave stirring device 3 is provided on the second waveguide box 6.

[0050] Preferably, a heat insulation frame assembly 2 is provided around the heating cavity 1, and a heat insulation component is provided between the heating cavity 1 and the heat insulation frame assembly 2. The heat insulation component is snap-fitted to the heat insulation frame assembly 2, and the heat insulation frame assembly 2 is connected to the heating cavity 1. As for the material of the heat insulation component 20, it can be conventional heat insulation cotton or other conventional heat insulation materials, and this application does not impose specific limitations on it.

[0051] This design effectively prevents heat transfer from the heating cavity 1 to the outside. On one hand, it provides thermal insulation, preventing heat transfer from the heating cavity 1 to electrical components such as the first magnetron 5 and the second magnetron 7, reducing the heat dissipation load on these components. On the other hand, it effectively concentrates heat in the heating cavity 1, ensuring a good heating rate and quickly reaching the required cooking temperature (such as the extremely high temperature cooking requirements under grilling functions). This helps improve cooking efficiency and ensures cooking results, while also reducing energy loss and waste caused by heat transfer from the cavity to the outside. Under the same cooking conditions, it effectively reduces energy consumption. Preferably, the cooking device also includes heating elements located at the top and bottom of the heating cavity. This design enables the cooking device to perform both microwave and grilling functions, meeting diverse user needs.

[0052] As an example of this utility model, the cooking device further includes a separator 9, which is horizontally arranged inside the heating cavity 1. The separator 9 can shield microwaves and is used to divide the heating cavity 1 into a first space and a second space arranged vertically. The first magnetron 5 and the second magnetron 7 are used to selectively send microwaves into the first space and the second space, respectively.

[0053] This setting allows for selective heating of the first and / or second spaces, avoiding heating the entire heating chamber 1 when food is scarce, thus significantly reducing energy consumption. It is particularly suitable for regions with stringent requirements for low power consumption and high energy efficiency, reducing annual power consumption (tested according to JISC9801) by 20%-40% and easily achieving Level 4 energy efficiency standards. Furthermore, it enriches the operating modes of the cooking device; for example, defrosting can be performed in the first space while heating in the second space, without interference, or either the first or second space can be used to heat food, further reducing energy consumption.

[0054] In this utility model, the technical content described in this embodiment can be adopted for any cooking device, such as a microwave oven or a steam oven. Based on the relevant structure and assembly relationship provided in this application, the cooking device also includes conventional components such as a base 8, a door assembly 10, and a shell 11. Since these conventional components can all adopt existing technology, they will not be described in detail here.

[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A microwave stirring device for use in a cooking apparatus, the cooking apparatus comprising a connected magnetron assembly and a waveguide assembly, the waveguide assembly being used to guide microwaves generated by the magnetron assembly into a heating cavity (1) for cooking food, the microwave stirring device (3) being disposed on the waveguide assembly and comprising a motor (31), the motor (31) being connected to a stirrer (33) via a connecting rod (32) for driving the rotation of the stirrer (33); characterized in that, The microwave stirring device (3) also includes a sensor (35) electrically connected to the control module. The sensor (35) is located on the side of the connecting rod (32) and does not contact the connecting rod (32). The connecting rod (32) is provided with an extension plate (323). The extension plate (323) rotates synchronously with the connecting rod (32). The sensor (35) generates a signal when the extension plate (323) passes by.

2. The microwave stirring apparatus according to claim 1, characterized in that, The microwave stirring device (3) includes a second bracket (36) for fixing the motor (31) and the sensing element (35), wherein the sensing element (35) is a Hall element, an infrared photoelectric sensor, or a magnetic sensor.

3. The microwave stirring apparatus according to claim 2, characterized in that, The second bracket (36) protrudes towards the side closer to the motor (31) to form a first protrusion (361). The first protrusion (361) is provided with a first mounting hole. The waveguide assembly includes a first waveguide box (4). The first waveguide box (4) protrudes away from the motor (31) to form a second protrusion (41). The second protrusion (41) is provided with a second mounting hole. The second mounting hole is opposite to the first mounting hole. The outer edge of the second mounting hole is provided with an annular rib (411). The annular rib (411) extends towards the side closer to the motor (31). The connecting rod (32) passes through the first mounting hole and the second mounting hole in sequence, and then connects to the stirrer (33).

4. The microwave stirring apparatus according to claim 1, characterized in that, A connector (37) is provided at the end of the connecting rod (32) away from the motor (31). The connector (37) is plugged into and fixed to the stirrer (33). A connecting bushing (38) is provided on the outside of the connector (37). The connector (37) can rotate relative to the connecting bushing (38) under the driving action of the connecting rod (32). The connecting bushing (38) is fixed on the heating chamber (1) and can support the stirrer (33).

5. The microwave stirring apparatus according to claim 4, characterized in that, The connecting rod (32) is made of non-metallic heat-insulating material.

6. The microwave stirring apparatus according to claim 5, characterized in that, The connecting rod (32) includes a first connecting part (321) with a first insertion hole (324) on one part for connecting the rotating shaft of the motor (31); it also includes a second connecting part (322) which can extend into the connector (37) and drive it to rotate as a whole.

7. A cooking apparatus, comprising a heating chamber (1), characterized in that, The magnetron assembly includes a first magnetron (5) disposed at the bottom of the heating cavity (1), and the waveguide assembly includes a first waveguide box (4). The first magnetron (5) introduces microwaves from the rear side of the heating cavity (1) through the first waveguide box (4). The microwave stirring device (3) according to any one of claims 1-6 is disposed on the first waveguide box (4).

8. The cooking apparatus according to claim 7, characterized in that, The magnetron assembly further includes a second magnetron (7) disposed at the bottom of the heating cavity (1), and the waveguide assembly further includes a second waveguide box (6). The second magnetron (7) introduces microwaves from the bottom of the heating cavity (1) through the second waveguide box (6), and the second waveguide box (6) is provided with the microwave stirring device (3) according to any one of claims 1-6.

9. The cooking apparatus according to claim 7, characterized in that, A heat insulation frame assembly (2) is provided around the heating cavity (1). A heat insulation component is provided between the heating cavity (1) and the heat insulation frame assembly (2). The heat insulation component is snapped into the heat insulation frame assembly (2). The heat insulation frame assembly (2) is connected to the heating cavity (1).

10. The cooking apparatus according to claim 7, characterized in that, The cooking device also includes a separator (9), which is horizontally arranged inside the heating cavity (1). The separator (9) can shield microwaves and is used to divide the heating cavity (1) into a first space and a second space arranged vertically. The first magnetron (5) and the second magnetron (7) are used to selectively send microwaves into the first space and the second space, respectively.

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