A multi-purpose kitchen appliance

Abstract

The patent application belongs to the technical field of kitchen appliances, and particularly relates to a multifunctional kitchen appliance, which comprises a rack, an inner container arranged in the rack, and an inner cavity for placing food arranged in the inner container; a steam heating system and a microwave system for heating food are arranged in the rack; the microwave system comprises a microwave generator assembly and a wave stirring assembly; a wave stirring part is arranged on the inner container, a wave stirring cavity is arranged in the wave stirring part, and the wave stirring cavity is connected with the microwave generator assembly and the inner cavity respectively; the wave stirring assembly comprises a wave stirring sheet rotatably arranged in the wave stirring part; the patent seals the gap between the wave-penetrating sealing plate, the sealing plate fixing ring and the inner container by arranging the sealing plate fixing ring and the sealing plate sealing element sealingly arranged on the wave-penetrating sealing plate, so as to prevent water vapor in the inner container from leaking into the wave stirring assembly and affecting the normal work of the wave stirring assembly, and to increase the stability of the oven during work.

Description

Technical Field

[0001] This patent application belongs to the field of kitchen appliance technology, and specifically refers to a multi-purpose kitchen appliance. Background Technology

[0002] For example, Chinese invention patent 2019111115425 discloses a steam oven, microwave oven, and microwave oven combo, which includes a waveguide and a microwave stirrer. A microwave penetrating plate is installed on the inner side of the top plate of the cooking cavity, and a stirring cavity is formed between the microwave penetrating plate and the top plate of the cooking cavity. The waveguide is located on the outer side of the stirring cavity, and the microwave stirrer is located inside the stirring cavity. The grilling device includes an upper heating tube and an auxiliary heating tube. The upper heating tube is installed on the inner side of the top plate of the cooking cavity and below the microwave penetrating plate, and the auxiliary heating tube is located outside the cooking cavity and installed on the top of the stirring cavity.

[0003] This patent has the following drawbacks:

[0004] 1. Poor sealing between the waveguide and the inner liner can cause steam generated during steaming and baking operations to leak into the waveguide, affecting the normal operation of the waveguide and the corresponding microwave generator.

[0005] 2. Given that the microwave oven in this patent integrates a microwave generator, a heating element, and an auxiliary heating element, when the heating element and the auxiliary heating element operate simultaneously, the heat they generate will be conducted to the microwave generator, which may cause the microwave generator to overheat and be damaged, thereby affecting its service life. Summary of the Invention

[0006] The purpose of this patent application is to provide a multi-functional kitchen appliance with better sealing performance.

[0007] The purpose of this patent application is achieved as follows:

[0008] A multi-purpose kitchen appliance includes a frame, an inner liner within the frame, and an inner cavity for placing food within the inner liner; the frame also includes a steam heating system and a microwave system for heating the food.

[0009] The microwave system includes a microwave generator assembly and a wave stirring assembly;

[0010] The inner liner is provided with a wave-stirring section, and the wave-stirring section is provided with a wave-stirring cavity, which is connected to the microwave generator assembly and the inner cavity respectively.

[0011] The wave stirring assembly includes a wave stirring plate rotatably disposed in the wave stirring section; a wave-transparent sealing plate is provided between the wave stirring cavity and the inner cavity to separate the two, and a sealing plate sealing element is provided on the edge of the wave-transparent sealing plate.

[0012] Furthermore, it also includes a sealing plate fixing ring, which seals the side of the churning part facing the inner liner and connects to the inner liner at the outer edge of the churning part. The edge of the wave-transparent sealing plate is sandwiched between the sealing plate fixing ring and the inner liner, and the sealing plate sealing element is provided between the sealing plate fixing ring and the inner liner.

[0013] Furthermore, the sealing plate has a first stop and a second stop, the first stop and the second stop respectively abutting against the outer edge of the wave-transparent sealing plate and one side surface of the wave-transparent sealing plate.

[0014] Furthermore, the sealing plate fixing ring has a relief groove on its edge, which accommodates the first or second stop edge of the sealing plate sealing element.

[0015] Furthermore, the microwave system also includes:

[0016] A microwave heat dissipation bracket is used to install on a microwave oven; the microwave heat dissipation bracket is provided with an air inlet and an air outlet, and a heat dissipation air duct connecting the air inlet and the air outlet is formed inside the microwave heat dissipation bracket;

[0017] A cooling fan is configured within the cooling air duct;

[0018] The microwave generator assembly is disposed in the heat dissipation duct and is used to generate microwaves;

[0019] The cooling fan is responsible for generating airflow to cool the microwave generator components;

[0020] The microwave heat dissipation bracket includes:

[0021] A heat dissipation bracket base, which is used to mount on a microwave oven;

[0022] The heat dissipation bracket top cover is fixed to the heat dissipation bracket base; the heat dissipation air duct is formed between the heat dissipation bracket base and the heat dissipation bracket top cover.

[0023] Furthermore, the microwave generator assembly includes a frequency converter and a magnetron connected together, and the heat dissipation bracket cover includes a first cover portion and a second cover portion, wherein the frequency converter is installed in the first cover portion;

[0024] The magnetron includes a mounting housing and a magnetron assembly disposed within the mounting housing. The mounting housing has open windows on both sides that are connected to each other. The second upper cover is fastened to the portion of the mounting housing with the open windows and is connected to the heat dissipation bracket base.

[0025] Furthermore, it also includes a waveguide assembly connected to the microwave generator assembly for guiding microwaves; the waveguide assembly includes:

[0026] A waveguide box, connected to the microwave generator assembly; an inclined first waveguide channel and a horizontal second waveguide channel are sequentially formed within the waveguide box; and

[0027] The scrambling block, made of metal, is fixed in the second waveguide channel.

[0028] Furthermore, the waveguide box is provided with a wave-stirring opening, and the wave-stirring assembly is connected to the waveguide assembly; the wave-stirring assembly includes:

[0029] A wave-stirring driver is fixed to the waveguide box;

[0030] A stirring rod, inserted into the stirring opening, is driven to rotate by the stirring drive component; and

[0031] The wave-stirring plate is connected to the wave-stirring rod and located outside the wave-stirring opening; the wave-stirring plate is driven to rotate by the wave-stirring rod.

[0032] Furthermore, the stirrer includes:

[0033] The rotating rod is rotatably mounted within the waveguide housing; and

[0034] An extension sleeve is fitted onto one end of the rotating rod and the other end is connected to the stirring plate. The extension sleeve and the rotating rod are provided with a plurality of sliding positioning holes for fixing the rotating rod and the extension sleeve by inserting a sliding positioning rod through the sliding positioning holes.

[0035] Furthermore, it also includes a baking system, which includes a first heating tube disposed in the inner liner, the first heating tube being located in front of the wave-transparent sealing plate, and a wave-transparent opening formed on the first heating tube opposite to the wave-transparent sealing plate.

[0036] The outstanding and beneficial technical effects of this patent application compared to the prior art are:

[0037] 1. This patent uses the sealing plate fixing ring and the sealing plate sealing element sealed on the wave-transparent sealing plate to seal the gap between the wave-transparent sealing plate, the sealing plate fixing ring and the inner liner, so as to prevent water vapor in the inner liner from leaking into the stirring assembly and affecting the normal operation of the stirring assembly, thereby increasing the stability of the oven described in this patent during operation.

[0038] 2. The sealing plate of this patent includes a first baffle and a second baffle. The first baffle and the second baffle form two seals in sequence, which can better prevent water vapor in the inner cavity from entering the wave-stirring part from the edge of the wave-transparent sealing plate. Attached Figure Description

[0039] Figure 1 This is a structural diagram of an oven.

[0040] Figure 2 This is a diagram showing the inner and outer chambers of an oven.

[0041] Figure 3 This is a schematic diagram of the microwave system installation.

[0042] Figure 4 This is a schematic diagram showing the connection between the microwave system and the inner liner.

[0043] Figure 5 yes Figure 4 A schematic diagram of the cross-section of the middle waveguide component.

[0044] Figure 6 This is a diagram showing the disassembled microwave heat dissipation bracket.

[0045] Figure 7 This is a schematic diagram showing the disassembly of the waveguide box.

[0046] Figure 8 This is a schematic diagram of the inner structure of the waveguide box.

[0047] Figure 9 This is a diagram showing the disassembly of the heat sink base and the heat sink cover.

[0048] Figure 10 This is a schematic diagram of the wave stirring component.

[0049] Figure 11 This is a cross-sectional schematic diagram of the wave stirring component.

[0050] Figure 12 This is a schematic diagram of the structure inside the oven cavity.

[0051] Figure 13 This is a cross-sectional diagram of an oven.

[0052] The meaning of the labels in the diagram:

[0053] 2. Frame; 21. Inner chamber; 211. Wave stirrer; 212. Wave stirrer cavity; 213. Inner cavity; 22. Outer chamber;

[0054] 3. Microwave heat dissipation bracket; 31. Air inlet; 32. Air outlet; 33. Heat dissipation duct; 34. Heat dissipation fan; 35. Heat dissipation bracket base; 36. Heat dissipation bracket top cover; 361. First top cover; 362. Second top cover;

[0055] 4. Microwave generator assembly; 41. Frequency converter; 42. Magnetron; 421. Mounting housing; 422. Magnetron assembly; 424. Open window; 425. Antenna;

[0056] 5. Waveguide assembly; 51. Waveguide box; 511. First waveguide channel; 512. Second waveguide channel; 513. Tuning rod; 514. Waveguide clearance groove; 515. Wave stirring opening;

[0057] 6. Wave stirring assembly; 61. Wave stirring drive component; 611. Wave stirring motor; 612. First wave stirring drive plate; 613. Second wave stirring drive plate; 62. Wave stirring rod; 621. Rotating rod part; 622. Extension sleeve; 623. Sliding positioning hole; 624. Sliding positioning rod; 63. Wave stirring plate; 631. Wave stirring protrusion; 64. Wave-transparent sealing plate; 641. Sealing plate fixing ring; 6411. Relief groove; 642. Sealing plate sealing component; 6421. First retaining edge; 6422. Second retaining edge;

[0058] 7. Steam heating system; 71. Water tank assembly; 72. Boiler system;

[0059] 8. Microwave system;

[0060] 9. Baking system; 91. Rack cooling fan; 92. First heating element; 921. Wave-transmitting opening; 93. Third heating element; 94. Air fryer fan; 95. Air fryer ventilation plate; Detailed Implementation

[0061] The present patent application will be further described below with reference to specific embodiments:

[0062] A multi-purpose kitchen appliance, combining Figure 1 , 2 As shown, the kitchen appliance includes a frame 2, within which are an inner liner 21 and an outer liner 22. One side of the inner liner 21 is open, with a door for closing it. The inner liner 21 has an inner cavity 213 for placing food, and a heating component is mounted on the outside of the inner liner 21. The outer liner 22 is located above the inner liner 21 and is fixedly connected to the frame 2 of the kitchen appliance. A steam heating system 7 for generating steam, a baking system 9 for heating, and a microwave system 8 are also provided outside the inner liner 21 of the kitchen appliance. These systems are generally mounted on the outer liner 22 or the appliance casing.

[0063] like Figure 2 As shown, the steam heating system 7 includes a water tank assembly 71 and a boiler system 72. The water tank assembly 71 is installed above the inner liner 21 to provide the water required for steaming and baking. The boiler system 72 is located on the rear side of the inner liner 21 and is connected to the water tank assembly 71. It is used to convert the water in the water tank assembly 71 into steam and supply it to the inner liner 21 to heat the food. The boiler system 72 has several pipes that are connected to the inner liner 21 to provide steam to the food in the inner liner 21 for heating.

[0064] The inner liner 21 is provided with a wave-stirring section 211. The inlet end of the wave-stirring section 211 is connected to the microwave generator assembly 4, and the outlet end of the wave-stirring section 211 is connected to the inner cavity 213. A wave-stirring plate 63 is rotatably provided in the wave-stirring section 211. A wave-transparent sealing plate 64 is provided on the wave-stirring section 211 to close the gap between the wave-stirring section 211 and the inner cavity 213. A sealing plate sealing element 642 is provided on the edge of the wave-transparent sealing plate 64.

[0065] Specifically, the microwave system 8 in this patent includes a microwave heat dissipation bracket 3, a microwave generator assembly 4, a waveguide assembly 5, a wave stirrer assembly 6, and a cooling fan 34. Combined with... Figure 3 , 4 As shown, the entire microwave system 8 in this patent is installed on one side of the outer liner 22. A rack cooling fan 91 is provided at the center of the outer liner 22. The rack cooling fan 91 operates to generate airflow to dissipate heat from the outer liner 22 and the inner liner 21 inside the rack 2, preventing the electrical components located outside the inner liner 21 from operating at a high temperature. The microwave heat dissipation bracket 3 is installed on one side of the rack cooling fan 91. The microwave heat dissipation bracket 3 in this patent includes a heat dissipation bracket base 35 and a heat dissipation bracket top cover 36. The heat dissipation bracket base 35 is used to fix the outer liner 22, and the heat dissipation bracket top cover 36 is fixed to the heat dissipation bracket base 35. The heat dissipation air duct 33 is formed between the heat dissipation bracket base 35 and the heat dissipation bracket top cover 36.

[0066] Combination Figure 3 , 4 As shown in Figure 6, the heat dissipation bracket base 35 of this patent has several connecting pairs on its outer edge. The connecting pairs have threaded holes, and screws are used to fix it to the outer shell 22. The heat dissipation bracket base 35 is generally elongated, and its outer edge has a vertical annular edge. An installation space is formed in the annular edge. The heat dissipation fan 34 and the microwave generator assembly 4 are installed in the installation space in the heat dissipation bracket base 35. After the heat dissipation bracket cover 36 is installed on the heat dissipation fan 34, the heat dissipation fan 34 and the microwave generator assembly 4 located in the heat dissipation bracket base 35 are closed by the heat dissipation bracket cover 36, and a heat dissipation duct 33 is formed.

[0067] Specifically, the microwave generator assembly 4 in this patent includes a frequency converter 41 and a magnetron 42 connected together. The frequency converter 41 and the magnetron 42 are arranged sequentially along the microwave heat dissipation bracket 3. The magnetron 42 specifically includes a mounting housing 421, a magnetron assembly 422 disposed in the mounting housing 421, and an antenna 425 located at one end of the mounting housing 421. The mounting housing 421 supports the magnetron assembly 422 located inside the mounting housing 421. During operation, the magnetron assembly 422 generates microwaves and transmits them outward through the antenna 425. The frequency converter 41 is used to control the operating frequency of the magnetron 42 to obtain microwaves of a specified frequency. The magnetic control assembly 422 generally includes a cathode, an anode, and a permanent magnet disposed within the mounting housing. The cathode is used to heat and generate electrons, and to make the electrons rotate between the anode and the permanent magnet to generate microwaves. The antenna 425 is connected to one side of the mounting housing 421 and is connected to the magnetic control assembly 422 inside the mounting housing 421. The microwaves generated between the cathode, anode, and permanent magnet are emitted outward from the antenna 425.

[0068] Accordingly, the heat dissipation bracket cover 36 includes a first cover portion 361 and a second cover portion 362; the first cover portion 361 is located in the front half of the heat dissipation bracket base 35, and its shape is adapted to the shape of the front half of the heat dissipation bracket base 35. The first cover portion 361 and the front half of the heat dissipation bracket base 35 are provided with corresponding connecting posts, and the connection is achieved by setting fasteners in the connecting posts; the frequency converter 41 is installed in the front half of the heat dissipation bracket base 35 and is closed by the first cover portion 361.

[0069] The second upper cover 362 is located on the rear half of the heat dissipation bracket base 35; the magnetron 42 in this patent has a large lateral volume, and the magnetron 42 itself has a mounting shell 421, such as Figure 6 , 9As shown, the cathode and anode of the magnetron assembly 422 are sequentially arranged one after the other inside the mounting housing 421. The mounting housing 421 has open windows 424 connected on both sides of the middle part. In this patent, the extension directions of the open windows 424 toward the heat dissipation duct 33 are opposite, and the cathode and anode are connected to the heat dissipation duct 33 through the open windows 424. At this time, the second upper cover 362 will be fastened to the part of the magnetron 42 housing with the open window 424, and the edge of the second upper cover 362 will be in contact with the outer wall of the mounting housing 421. That is, the edge of the second upper cover 362 will be in contact with part of the mounting housing 421 and connected by fasteners. At this time, the open window 424 of the mounting housing 421 is opposite to the heat dissipation duct 33, which facilitates the operation of the heat dissipation fan 34 in the heat dissipation duct 33 to dissipate heat from the anode. Moreover, this layout makes good use of the mounting housing 421 of the magnetron 42 itself, so that the mounting housing 421 is connected to the microwave heat dissipation bracket 3 as a whole, effectively saving the installation space on the outer shell 22 and making the overall layout more scientific.

[0070] The outer end of the second upper cover 362 is slightly arched, connecting to the upper side of the outer liner and forming an air outlet 32 ​​with the outer liner 22 to create a heat dissipation duct 33. This air outlet 32 ​​is connected to the front side of the frame 2 of the kitchen appliance. Figure 6 , 7 As shown in Figures 9 and 1, the cooling fan 34 is disposed in the front half of the cooling bracket base 35 and is located in front of the microwave generator assembly 4. The cooling fan 34 is specifically an impeller fan, which is fixed on the cooling bracket base 35 by fasteners. Correspondingly, the air inlet 31 is disposed on the top of the microwave cooling bracket 3, that is, on the first upper cover 361.

[0071] When the cooling fan 34 is working, it draws in air through the air inlet 31, and the airflow passes sequentially through the frequency converter 41 and the magnetron 42, and is discharged outward through the air outlet 32. Simultaneously, the airflow passes through the anode of the magnetron 42 for heat dissipation. Since the kitchen appliance in this patent is a microwave-steam-grill combo, the baking system 9 in the kitchen appliance also generates significant high temperatures during operation, affecting the heating of the microwave generator component 4 in the microwave system 8. This results in the microwave generator component 4 not operating at a optimal temperature and relying solely on the cooling fan 91 located on one side of the microwave system 8 for heat dissipation. This patent, however, independently installs the cooling fan 34 within the microwave system 8 to independently dissipate heat from the microwave generator component 4, ensuring that the microwave generator component 4 always operates at a optimal temperature. Furthermore, in the microwave system 8 of this patent, the magnetron component 422 on the magnetron 42 is directly connected to the heat dissipation duct 33 through the open window 424, and is directly cooled by the heat dissipation fan 34, which further increases the heat dissipation effect of the heat dissipation fan 34 on the magnetron 42.

[0072] Furthermore, the waveguide assembly 5 includes a waveguide box 51 and a tuning rod 513. The waveguide assembly 5 is connected to the antenna 425 of the magnetron 42. The waveguide box 51 is formed by stretching and welding two panels together. By pre-stretching the two panels, the outer contour of the waveguide box 51 is formed after welding. Specifically, as shown... Figure 5 , 7 As shown in Figure 8, the structure consists of an inclined first waveguide channel 511 and a horizontal second waveguide channel 512. The first waveguide channel 511 is connected to the antenna 425. Microwaves emitted by the microwave generator assembly 4 first enter the first waveguide channel 511 and then the second waveguide channel 512. The purpose of setting the inclined first waveguide channel 511 is that the microwave generator assembly 4 generally has a certain height, while the waveguide box 51 is generally attached to the outer shell 22. Therefore, the inclined first waveguide channel 511 is set to compensate for the height difference between the microwave generator assembly 4 and the second waveguide channel 512, thereby eliminating the need to adjust the structure of the microwave generator assembly 4 and reducing manufacturing difficulty.

[0073] Furthermore, the first waveguide channel 511 is also provided with a waveguide clearance groove 514 opposite to the microwave generation direction of the microwave generator assembly 4. For example... Figure 8 As shown, the waveguide clearance groove 514 is formed on the upper side panel of the waveguide box 51, specifically in the form of a right-angled structure. The main purpose of providing the waveguide clearance groove 514 is to prevent the outer wall of the waveguide box 51 from getting too close to the antenna 425, thereby preventing interference with the normal transmission of microwaves due to their close proximity.

[0074] Furthermore, the tuning rod 513 is fixed in the second waveguide channel 512, combined with... Figure 7 , 8 As shown, the tuning rod 513 is a metal part, which is fixed to the upper side panel of the waveguide box 51 by welding the fasteners at the factory. Its function is to reflect the microwaves located in the waveguide box 51 so as to make the microwave transmission more uniform.

[0075] Furthermore, the waveguide box 51 is provided with a wave-stirring opening 515, and correspondingly, the wave-stirring assembly 6 includes a wave-stirring drive 61, a wave-stirring rod 62, and a wave-stirring plate 63. Specifically, as follows... Figure 5-8 As shown, the wave-stirring opening 515 is a circular opening formed in the second waveguide channel 512; the wave-stirring rod 62 is rotatably mounted in the upper side panel of the waveguide box 51 via a bearing, and the lower end of the wave-stirring rod 62 passes through the wave-stirring opening 515; the wave-stirring drive unit 61 includes a wave-stirring motor 611, which drives a first wave-stirring drive plate 612; one end of the wave-stirring rod 62 is provided with a second wave-stirring drive plate 613 intersecting with the first wave-stirring drive plate 612, which drives the wave-stirring rod 62 to rotate by the abutting of the first wave-stirring drive plate 612 and the second wave-stirring drive plate 613. The wave-stirring plate 63 is connected to the wave-stirring rod 62 and located outside the wave-stirring opening 515, and the wave-stirring plate 63 is driven to rotate by the wave-stirring rod 62.

[0076] For details, please refer to the following: Figure 5 , 6 As shown, a wave-stirring bracket is provided outside the waveguide box 51, and a wave-stirring motor 611 is provided on the wave-stirring bracket. A vertically arranged first wave-stirring drive plate 612 is provided on the motor shaft of the wave-stirring motor 611. A horizontally arranged second wave-stirring drive plate 613 is provided on the end of the wave-stirring rod 62 exposed outside the waveguide box 51. The second wave-stirring drive plate 613 includes a torsion spring, which is fitted onto the end of the wave-stirring rod 62 exposed outside the waveguide box 51. One end of the torsion spring is connected to the wave-stirring rod 62 by a plug-in connection, and the other end extends outward to intersect with the first wave-stirring drive plate 612. At this time, the rotation of the wave-stirring motor 611 drives the first wave-stirring drive plate 612 to rotate, and the first wave-stirring drive plate 612 drives the second wave-stirring drive plate 613 to rotate, thereby causing the wave-stirring rod 62 to rotate, and the wave-stirring rod 62 drives the wave-stirring plate 63 located outside the wave-stirring opening 515 to rotate.

[0077] The stirring plate 63 is specifically a fan-shaped plate. In practice, the stirring plate 63 is located between the outer liner 22 and the inner liner 21, and a stirring section 211 is provided between the outer liner 22 and the inner liner 21 outside the stirring plate 63. Specifically, the top of the inner liner 21 arches upward and connects to the outer liner 22, forming a trapezoidal cross-section of the stirring section 211. A stirring cavity 212 is formed within the stirring section 211. The inlet end of the stirring section 211 connects to the microwave generator assembly 4, and the outlet end of the stirring section 211 connects to the inner cavity 213. The stirring plate 63 is rotatably mounted within the stirring section 211. Specifically, the lower end of the stirring rod 62 passes through the stirring opening 515, and the stirring plate 63 is located within the stirring section. A wave-transparent sealing plate 64 is placed on the inner liner 21 at the end of the stirring section 211 to seal the stirring section 211. The wave-stirring plate 63 is placed in the wave-stirring section 211. When microwaves are emitted through the microwave generator assembly 4, they pass through the waveguide box 51 and are sent out through the wave-stirring opening 515 on the waveguide box 51 to contact the wave-stirring plate 63 located in the wave-stirring section 211. The microwaves are dispersed by the rotation of the wave-stirring plate 63 and enter the inner liner 21 through the wave-transparent sealing plate 64 for heating. Microwaves are reflected back and forth in the sealed waveguide box 51, the stirring channel 211, and the inner liner, eventually "stuck" in certain fixed positions to form standing waves, resulting in uneven energy distribution. The metal stirring plate 63 continuously reflects microwaves when it rotates, and each reflection changes the electromagnetic boundary conditions of the sealed cavity, forcing the originally fixed standing wave mode to be unstable and constantly reorganized into new standing wave modes, generating more modes of field waves. This disperses the hot spots in the original sealed cavity, i.e., the inner liner 21, to different positions, and the cold spots are repeatedly irradiated, ultimately making the microwave energy distribution in the entire inner liner 21 more uniform and the food heated more evenly.

[0078] This patent uses a first wave-driving plate 612 and a second wave-driving plate 613 to drive the wave-driving motor 611 to drive the wave-driving rod 62. Its advantages are that it facilitates the installation of the wave-driving motor 611, which can accommodate a slight error, and speeds up the installation process. At the same time, by setting the second wave-driving plate 613 as a torsion spring, the contact between the first wave-driving plate 612 and the second wave-driving plate 613 is made smoother, allowing the wave-driving rod 62 to rotate better.

[0079] Furthermore, the wave-stirring plate 63 is fan-shaped, with raised wave-stirring protrusions 631 on both sides of its fan-shaped edge. (Combined with...) Figure 10 , 11As shown, one end of the wave-stirring plate 63 is fixed to the bottom of the wave-stirring rod 62 by fasteners. The wave-stirring plate 63 is directly manufactured into a fan shape by stamping and forms a raised wave-stirring protrusion 631. The wave-stirring protrusion 631 can better stir the waves when rotating, so that the microwave energy distribution in the inner liner 21 is more uniform.

[0080] Furthermore, the wave stirrer 62 includes a rotating rod portion 621 and an extension sleeve 622. The rotating rod portion 621 is rotatably mounted in the waveguide box 51 via a bearing. The extension sleeve 622 is sleeved on one end of the rotating rod portion 621. The extension sleeve 622 and the rotating rod are provided with a plurality of sliding positioning holes 623 for fixing the rotating rod portion 621 and the extension sleeve 622 by inserting sliding positioning rods 624 through the sliding positioning holes 623. The axial connection position between the rotating rod portion 621 and the extension sleeve 622 can be changed through the sliding positioning holes 623 and the sliding positioning rods 624, thereby changing the length of the wave stirrer 62 formed by the connection of the rotating rod portion 621 and the extension sleeve 622, thereby changing the position and height of the wave stirrer 63, and thus changing the microwave reflection effect of the wave stirrer 63 to adapt to different kitchen appliance structures.

[0081] Furthermore, the wave-transparent sealing plate 64 is provided with a sealing plate fixing ring 641 for connecting with the inner liner 21, and a sealing plate sealing element 642 is provided between the sealing plate fixing ring 641 and the inner liner 21. Figure 5 As shown, the sealing plate fixing ring 641 is fixed to the inner side of the inner liner 21 by fasteners. A groove is formed between the inner liner 21 and the sealing plate fixing ring 641 to hold the wave-transparent sealing plate 64. This groove is used to clamp the edge of the wave-transparent sealing plate 64, thus fixing it. A sealing plate sealing element 642 is provided at the bottom of this groove to seal the gap between the wave-transparent sealing plate 64, the sealing plate fixing ring 641, and the inner liner 21. This prevents water vapor in the inner liner 21 from leaking into the agitator assembly 6, affecting its normal operation, and increasing the stability of the oven described in this patent during operation. The sealing plate sealing element 642 can be made of silicone or rubber.

[0082] Furthermore, the sealing plate sealing member 642 has a first retaining edge 6421 and a second retaining edge 6422, the first retaining edge 6421 and the second retaining edge 6422 respectively abutting against the outer edge of the wave-transparent sealing plate 64 and a side surface of the wave-transparent sealing plate 64, such as... Figure 5As shown, the sealing plate seal 642 in this patent has an "L" shaped cross section. It is fitted onto the outer edge of the wave-transparent sealing plate 64, so that the first baffle 6421 of the sealing plate seal 642 abuts against the outer edge of the wave-transparent sealing plate 64, and the second baffle 6422 abuts against one side surface of the wave-transparent sealing plate 64. At this time, the wave-transparent sealing plate 64 is clamped by the sealing plate fixing ring 641, and the sealing plate seal 642 is limited in the groove between the inner liner 21 and the sealing plate fixing ring 641. At this time, the first baffle 6421 and the second baffle 6422 form two seals in sequence, which can better prevent water vapor in the inner cavity 213 from entering the wave-stirring part 211 from the edge of the wave-transparent sealing plate 64.

[0083] Furthermore, the sealing plate fixing ring 641 has a relief groove 6411 on its edge, and the relief groove 6411 accommodates the first stop edge 6421 or the second stop edge 6422 of the sealing plate sealing member 642. Figure 5 As shown, the clearance groove 6411 is annular and is used to accommodate the second retaining edge 6422, so as to provide installation space for the installation of the second retaining edge 6422.

[0084] Combination Figure 12 , 13 As shown, the baking system 9 in this patent includes a first heating tube 92 disposed on the top of the inner liner 21. The first heating tube 92 is located just in front of the microwave-transparent sealing plate 64. Considering that the kitchen appliance described in this patent has a microwave system 8, the first heating tube 92 in this patent is configured in a U-shape, with a microwave-transparent opening 921 formed on it that is opposite to the microwave-transparent sealing plate 64. This way, most of the structure of the first heating tube 92 is no longer blocked by the microwave-transparent sealing plate 64, reducing the interference of the first heating tube 92 on the operation of the microwave system 8.

[0085] like Figure 13 As shown, the baking system 9 actually includes an air frying assembly disposed on the rear side of the inner liner 21. The air frying assembly includes a second heating tube 93 on the rear side of the inner liner 21. In fact, a cavity is formed on the rear side of the inner liner 21, and the second heating tube 93 is disposed in the cavity. The second heating tube 93 is circular and has an air frying fan 94 inside. At the same time, an air frying vent plate 95 is provided on the air frying fan 94. The second heating tube 93 heats up and sends the heat to the inner liner 21 through the air frying fan 94 and the air frying vent plate 95, thereby achieving the air frying effect of the kitchen appliance.

[0086] The above embodiments are merely preferred embodiments of this patent application and are not intended to limit the scope of protection of this patent application. Therefore, all equivalent changes made to the structure, shape, and principle of this patent application should be covered within the scope of protection of this patent application.

[0087] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this patent application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this patent application, should still fall within the scope of the technical content disclosed in this patent application. Furthermore, the terms such as "above," "below," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this patent application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this patent application.

[0088] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0089] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A multi-purpose kitchen appliance, characterized in that: Includes a frame (2), in which an inner liner (21) is provided, and in which an inner cavity (213) for placing food is provided; the frame (2) is provided with a steam heating system (7) and a microwave system (8) for heating food; The microwave system (8) includes a microwave generator assembly (4) and a wave stirring assembly (6); The inner liner (21) is provided with a wave stirring part (211), and the wave stirring part (211) is provided with a wave stirring cavity (212). The wave stirring cavity (212) is connected to the microwave generator assembly (4) and the inner cavity (213) respectively. The wave stirring assembly (6) includes a wave stirring plate (63) rotatably disposed in the wave stirring part (211); a wave-transparent sealing plate (64) is provided between the wave stirring cavity (212) and the inner cavity (213) to separate the two, and a sealing plate sealing element (642) is provided on the edge of the wave-transparent sealing plate (64).

2. The multi-purpose kitchen appliance according to claim 1, characterized in that: It also includes a sealing plate fixing ring (641), which seals the side of the wave-stirring part (211) facing the inner liner (21) and is connected to the inner liner (21) at the outer edge of the wave-stirring part (211). The edge of the wave-transparent sealing plate (64) is sandwiched between the sealing plate fixing ring (641) and the inner liner (21), and the sealing plate sealing element (642) is provided between the sealing plate fixing ring (641) and the inner liner (21).

3. A multi-purpose kitchen appliance according to claim 2, characterized in that: The sealing plate sealing element (642) has a first stop (6421) and a second stop (6422), the first stop (6421) and the second stop (6422) respectively abut against the outer edge of the wave-transparent sealing plate (64) and one side surface of the wave-transparent sealing plate (64).

4. A multi-purpose kitchen appliance according to claim 3, characterized in that: The sealing plate fixing ring (641) has a relief groove (6411) on its edge, and the relief groove (6411) accommodates the first stop edge (6421) or the second stop edge (6422) of the sealing plate sealing member (642).

5. A multi-purpose kitchen appliance according to claim 1, characterized in that, The microwave system also includes: A microwave heat dissipation bracket (3) is used to be installed on a microwave oven; the microwave heat dissipation bracket (3) is provided with an air inlet (31) and an air outlet (32), and a heat dissipation air duct (33) connecting the air inlet (31) and the air outlet (32) is formed inside the microwave heat dissipation bracket (3); A cooling fan (34) is disposed within the cooling duct (33); The microwave generator assembly (4) is disposed in the heat dissipation duct (33) and is used to generate microwaves; The cooling fan (34) is responsible for generating airflow to cool the microwave generator assembly (4); The microwave heat dissipation bracket (3) includes: A heat dissipation bracket base (35) is used to mount on a microwave oven; A heat dissipation bracket top cover (36) is fixed on the heat dissipation bracket base (35); the heat dissipation air duct (33) is formed between the heat dissipation bracket base (35) and the heat dissipation bracket top cover (36).

6. A multi-purpose kitchen appliance according to claim 5, characterized in that: The microwave generator assembly (4) includes a frequency converter (41) and a magnetron (42) connected to each other. The heat dissipation bracket cover (36) includes a first cover part (361) and a second cover part (362). The frequency converter (41) is installed in the first cover part (361). The magnetron (42) includes a mounting housing (421) and a magnetron assembly (422) disposed in the mounting housing (421). The mounting housing (421) has open windows (424) that are connected to each other on both sides. The second upper cover (362) is fastened to the part of the mounting housing (421) with the open windows (424) and connected to the heat dissipation bracket base (35).

7. A multi-purpose kitchen appliance according to claim 5, characterized in that, It also includes a waveguide assembly (5), which is connected to the microwave generator assembly (4) and is used to guide microwaves; the waveguide assembly (5) includes: A waveguide box (51) is connected to the microwave generator assembly (4); an inclined first waveguide channel (511) and a horizontal second waveguide channel (512) are sequentially formed within the waveguide box (51); and A scrambling block (513) is made of metal and is fixed in the second waveguide channel (512).

8. A multi-purpose kitchen appliance according to claim 7, characterized in that: The waveguide box (51) is provided with a wave-stirring opening (515), and the wave-stirring assembly (6) is connected to the waveguide assembly (5); the wave-stirring assembly (6) includes: A wave-stirring drive (61) is fixed to the waveguide box (51); A stirring rod (62) is inserted into the stirring opening (515) and rotated by the stirring drive (61); and The wave-stirring plate (63) is connected to the wave-stirring rod (62) and located outside the wave-stirring opening (515); the wave-stirring plate (63) is driven to rotate by the wave-stirring rod (62).

9. A multi-purpose kitchen appliance according to claim 8, characterized in that, The stir bar (62) includes: The rotating rod (621) is rotatably disposed within the waveguide box (51); and An extension sleeve (622) is fitted onto one end of the rotating rod (621), and the other end is connected to the wave stirrer (63). The extension sleeve (622) and the rotating rod are provided with a plurality of sliding positioning holes (623) for fixing the rotating rod (621) and the extension sleeve (622) by inserting a sliding positioning rod (624) through the sliding positioning hole (623).

10. A multi-purpose kitchen appliance according to claim 1, characterized in that: It also includes a baking system (9), which includes a first heating tube (92) disposed in the inner liner (21), the first heating tube (92) being located in front of the wave-transparent sealing plate (64), and a wave-transparent opening (921) being formed on the first heating tube (92) opposite to the wave-transparent sealing plate (64).

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