A steamer, oven and microwave oven all-in-one machine

Abstract

A steamer, oven and microwave oven all-in-one, the microwave generating device comprises a waveguide and a microwave stirrer, a microwave penetrating plate is installed on the inner side of the top plate of the cooking cavity, a stirring wave cavity is formed between the microwave penetrating plate and the top plate of the cooking cavity, the waveguide is arranged on the outer side of the stirring wave cavity, the microwave stirrer is arranged on the inside of the stirring wave cavity, the grill generating device comprises 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 is located below the microwave penetrating plate, the auxiliary heating tube is located outside the cooking cavity and is installed on the top of the stirring wave cavity. The steamer, oven and microwave oven all-in-one adopts microwave emission from the top of the cooking cavity, the microwave emission is first absorbed by the food, and only a small amount of microwave is absorbed by the condensed water at the bottom of the inner pot, so that the microwave heating speed is improved, the heat of the auxiliary heating tube can be transferred to the microwave penetrating plate on the inner side of the top plate of the cooking cavity, the condensed water problem in the microwave penetrating plate area is solved, and the condensed water dripping is prevented from affecting the taste of the food.

Description

Technical Field

[0001] The invention relates to a cooking device, in particular to an all-in-one steamer, oven and microwave oven. Background Art

[0002] As people's quality of life continues to improve, kitchen appliances are becoming more and more abundant. Microwave ovens, ovens, steamers, etc. have gradually become essential kitchen appliances for family life. These kitchen appliances not only have relatively simple functions, but each product requires a certain amount of kitchen space, and the cost of purchasing them separately is high. In order to effectively utilize kitchen space and reduce purchase costs, people invented the steamer, oven, and microwave oven all-in-one. For example, the "Microwave Steamer and Oven All-in-One" disclosed in the Chinese utility model patent with patent number 201320074461.4 (authorization announcement number CN 203168920U) includes a body, a door frame and a controller installed on the front of the body, a cavity in the body, a transformer installed on the top of the body, a capacitor connected to the transformer, a magnetron connected to the capacitor, and a waveguide box connected to the magnetron, microwaves are transmitted into the cavity through the waveguide box, a microwave agitator is arranged at the microwave inlet in the cavity, a low-speed motor is connected to the microwave agitator, a water container and a steam generator connected to the water container are installed on the side wall of the body, the steam generator is communicated with the cavity in the body, a heating tube is arranged on the top of the cavity in the body, and the heating tube is connected to the controller. Although the microwave oven integrates the functions of a microwave oven, a steamer and an oven, it is not only fully functional and easy to use, but also occupies relatively little kitchen space and has a low cost. However, its shortcomings are that the spatial layout design inside the machine is not reasonable enough, the internal structure is not compact enough, and the heat dissipation effect is not good, which is not conducive to the heat dissipation and cooling of electronic components. In addition, there is a common problem with steam cooking microwave ovens on the market, that is, after steam cooking, condensed water will be generated in the cavity. If the user does not clean up the accumulated water in time, the next time the microwave cooking function is used, the microwave heating speed will be slow, because the condensed water in the cavity will absorb part of the microwave, thus affecting the user experience. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide an all-in-one steamer, oven and microwave oven that can effectively solve the problem of condensed water on the top of the inner tank in response to the above-mentioned existing technical status.

[0004] The second technical problem to be solved by the present invention is to provide a steamer, oven and microwave oven integrated machine which can avoid microwave ignition and microwave leakage between the hot air blower baffle and the inner pot in view of the above-mentioned existing technical status.

[0005] The third technical problem to be solved by the present invention is to provide an all-in-one steamer, oven and microwave oven which can seal steam between the heating plate and the inner pot and effectively prevent microwave leakage.

[0006] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: the steamer, oven and microwave oven all-in-one machine comprises a box body and a cooking cavity arranged in the box body, a steam generator, a microwave generator and a grill generator are installed in the box body, the microwave generator comprises a waveguide and a microwave stirrer, and is characterized in that: a microwave penetrating plate for microwaves to pass through is installed on the inner side of the top plate of the cooking cavity, a stirring wave cavity is formed between the microwave penetrating plate and the top plate, the waveguide is arranged on the outside of the stirring wave cavity, the microwave stirrer is arranged inside the stirring wave cavity, the grill generator comprises 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 is located below the microwave penetrating plate, and the auxiliary heating tube is located outside the cooking cavity and installed on the top of the stirring wave cavity.

[0007] In order to avoid microwave leakage, a heat transfer hole with an upper flange is formed on the top wall of the stirring wave cavity, and the heat transfer hole is arranged along the auxiliary heating tube, and the tube wall of the auxiliary heating tube is close to the heat transfer hole. In this way, when the auxiliary heating tube is heated, part of the heat can be transferred to the stirring wave cavity through the flanged heat transfer hole to heat the microwave penetrating plate, thereby preventing the microwave penetrating plate from generating condensed water.

[0008] In order to prevent the heat of the auxiliary heating tube from being lost, a heat insulation cover is installed on the top of the stirring cavity, and the auxiliary heating tube is arranged inside the heat insulation cover. In this way, part of the heat of the auxiliary heating tube is stored in other areas of the top of the cooking cavity by the heat insulation cover, preventing condensation water from being generated in other areas of the top of the cavity.

[0009] In order to isolate the microwave energy in the upper cavity after the microwave is emitted from the top and solve the problem of slow microwave heating, the interior of the cooking cavity is divided into an upper cavity and a lower cavity by a metal steaming tray.

[0010] In order to prevent the upper heating tube from blocking the microwaves, the inner side of the upper heating tube is surrounded by a avoiding structure for avoiding microwaves.

[0011] The microwave generating device can have multiple installation positions in the box body, and the microwave generating device also includes a magnetron, a high-voltage capacitor, a high-voltage fuse and a high-voltage transformer installed on the rear side of the back plate of the cooking cavity.

[0012] Further preferably, the microwave transmitting plate is glass-ceramics.

[0013] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: the steamer, oven and microwave oven all-in-one machine is provided with a hot air blower baffle on the rear side of the back plate of the cooking cavity, a hot air chamber is formed between the hot air blower baffle and the back plate, a through hole that can prevent microwaves from passing through is opened in the area of ​​the back plate corresponding to the hot air chamber, and a sealing connection is formed between the periphery of the hot air blower baffle and the back plate.

[0014] Preferably, the steam generating device includes a water tank, a water pump and a heating plate, a water inlet hole and an exhaust hole are opened on the side wall of the cooking cavity, the water pump is connected to the water path between the water outlet of the water tank and the water inlet hole, and the heating plate is located in the cooking cavity and installed on the bottom plate of the cooking cavity.

[0015] In order to install the water tank in a reasonable position, preferably, an upper mounting plate is installed above the cooking cavity, the water tank is mounted on the upper mounting plate and hidden behind the control panel on the front of the box body, and an opening for the water tank to enter and exit is opened on the control panel.

[0016] In order to facilitate the disassembly and assembly of the heating plate and to enable the heating plate to be sealed and connected to the bottom plate, a mounting hole is opened on the bottom plate of the cooking cavity, and an annular groove surrounding the mounting hole is formed on the bottom plate, and a step extending radially inward is formed on the top of the inner wall of the annular groove, and the heating plate is detachably connected to the step, and a sealing ring is installed in the annular groove, and the sealing ring is sealed with the heating plate.

[0017] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: the steamer, oven and microwave oven integrated machine has a liquid inlet hole on the outer wall of the annular groove, a liquid receiving cavity connected to the liquid inlet hole is formed inside the sealing ring, and a liquid discharge hole connected to the liquid receiving cavity is also formed on the top of the sealing ring.

[0018] Preferably, the liquid receiving chamber is annular and is arranged on the outer periphery of the sealing ring.

[0019] In order to facilitate the condensed water to flow back to the heating plate, the mounting hole is arranged in the center of the bottom plate, the bottom plate gradually slopes downward from the outer circumference to the mounting hole, and the upper surface of the heating plate is lower than the upper edge of the outer wall of the annular groove.

[0020] In order to effectively prevent microwave leakage, a through hole is opened on the step, a waveguide corresponding to the through hole is installed at the bottom of the step, and a connecting column corresponding to the through hole is installed at the bottom of the heating plate, and the connecting column is inserted into the corresponding waveguide. After adopting the above structure, at the connection point between the heating plate connecting column and the inner pot, due to the design of the cutoff waveguide, microwaves can bounce back to the inner pot inside the cutoff waveguide, and there is almost no microwave leakage, thereby reducing the internal leakage of microwaves and making cooking safer and more reliable.

[0021] In order to effectively prevent the heating plate from being partially dry-burned, a boss protruding upward is formed in the center of the upper surface of the heating plate.

[0022] In order to discharge the steam in the cooking cavity, an upper mounting plate is installed above the cooking cavity, and an air guide component for discharging the steam in the cooking cavity is installed on the upper mounting plate.

[0023] Compared with the prior art, the advantages of the present invention are: the steamer, oven and microwave oven all-in-one machine uses microwaves emitted from the top of the cooking cavity. The microwaves are first absorbed by the food, and only a small amount of microwaves are absorbed by the condensed water at the bottom of the inner pot, thereby improving the speed of microwave heating. In addition, by installing an auxiliary heating tube on the top of the stirring cavity, the heat of the auxiliary heating tube can be transferred to the microwave penetration plate on the inner side of the top plate of the cooking cavity, solving the problem of condensed water in the microwave penetration plate area and preventing condensed water from dripping and affecting the taste of food. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention when the door is closed;

[0025] Figure 2 It is a schematic diagram of the structure of an embodiment of the present invention when the door is open;

[0026] Figure 3 This is a schematic diagram of the structure of an embodiment of the present invention without the door body;

[0027] Figure 4 Schematic diagram of the internal structure of an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the internal structure of an embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the internal structure of an embodiment of the present invention (without the heat shield);

[0030] Figure 7 A structural cross-sectional view of an embodiment of the present invention;

[0031] Figure 8 A cross-sectional view of the structure of the heating plate installed in an embodiment of the present invention;

[0032] Fig. 9 Another structural cross-sectional view of the heating plate installation structure according to an embodiment of the present invention;

[0033] Fig.10 It is a partial three-dimensional exploded schematic diagram of an embodiment of the present invention;

[0034] Fig.11 for Fig.10 Enlarged schematic diagram of part A. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] like Figures 1 to 7 As shown, the steamer oven microwave oven of this embodiment comprises a box body 1, a cooking cavity 2 is installed inside the box body 1, and the cooking cavity 2 is divided into an upper cavity 200 and a lower cavity 201 by a movable metal steaming plate 8. The box body 1 has a steam generating device, a microwave generating device and a grill generating device, and the steaming mode, the microwave mode and the grilling mode all share the same cooking cavity 2. A door assembly 20 that can be opened and closed is installed on the front side of the box body 1, and a control panel 17 is provided above the door assembly 20, and the control panel 17 can select and control the working mode of the all-in-one machine.

[0037] In this embodiment, a microwave penetrating plate 4 is installed inside the top plate 21 of the cooking cavity 2, and the microwave penetrating plate 4 is preferably made of microcrystalline glass. A stirring wave cavity 5 is formed between the microwave penetrating plate 4 and the top plate 21. The microwave generating device includes a waveguide 31, a microwave stirrer 32, a magnetron 33, a high-voltage capacitor 34, a high-voltage fuse 35 and a high-voltage transformer 36. Among them, the waveguide 31 is arranged on the outside of the stirring wave cavity 5, the microwave stirrer 32 is arranged inside the stirring wave cavity 5, and the magnetron 33, the high-voltage capacitor 34, the high-voltage fuse 35 and the high-voltage transformer 36 are installed on the rear side of the back plate 22 of the cooking cavity 2.

[0038] A hot air blower baffle 9 is installed on the rear side of the back plate 22 of the cooking cavity 2, a hot air chamber is formed between the hot air blower baffle 9 and the back plate 22, a perforation 221 is opened on the back plate 22 in the area corresponding to the hot air chamber to prevent microwaves from passing through, and a peripheral edge 91 of the hot air blower baffle 9 is sealed and connected to the back plate 22. In this way, microwaves in the cooking cavity 2 can be prevented from leaking into the hot air chamber, and microwave ignition between the hot air blower baffle 9 and the back plate 22 can be avoided.

[0039] The barbecue generating device of this embodiment includes components such as an upper heating tube 61, an auxiliary heating tube 62, a back heating tube 63 and a hot air blower 64. Among them, the upper heating tube 61 is installed on the inner side of the top plate 21 of the cooking cavity 2 and is located below the microwave penetration plate 4. The inner side of the upper heating tube 61 is surrounded by a avoiding structure for avoiding microwaves. The auxiliary heating tube 62 is located outside the cooking cavity 2 and installed on the top of the stirring cavity 5. The top wall of the stirring cavity 5 is formed with a heat transfer hole 51 with an upper flange. The heat transfer hole 51 is arranged along the auxiliary heating tube 62. The auxiliary heating tube 62 can transfer heat to the stirring cavity 5 through the heat transfer hole 51. In addition, the heat insulation cover 7 is installed on the top of the stirring cavity 5 and covers the auxiliary heating tube 62. In this way, part of the heat of the auxiliary heating tube 62 is stored by the heat insulation cover 7 at the top of the cooking cavity 2. The back heating pipe 63 is installed inside the hot air chamber, and the hot air blower 64 is installed on the hot air blower baffle 9. Under the action of the hot air blower 64, the air in the hot air chamber and the air in the cooking cavity 2 undergo heat circulation.

[0040] The steam generating device of this embodiment includes components such as a water tank 11, a water pump 12 and a heating plate 13. The water tank 11 is mounted on an upper mounting plate 16 above the cooking cavity 2 and is hidden behind the right side of a control panel 17. An opening is provided on the control panel 17, through which the water tank 11 can be placed in or taken out. An air guide assembly 10 for discharging steam in the cooking cavity 2 is mounted on the upper mounting plate 16. The working principle of the air guide assembly 10 is the same as that of the air guide assembly of an existing steam box, and its specific structure will not be described in detail.

[0041] A water inlet hole 14 and an exhaust hole 15 are provided on the right side wall of the cooking cavity 2, and a water pump 12 is connected to the water path between the water outlet of the water tank 11 and the water inlet hole 14. Since the strong electric part of the microwave generating device is located at the rear side of the cooking cavity 2, it is separated from the water tank 11 and the water path system and other components, thereby ensuring electrical safety.

[0042] The installation structure of the heating plate 13 is as follows:

[0043] like Figures 8 to 11 As shown, a mounting hole 24 is formed on the bottom plate 23 of the cooking cavity 2, and the mounting hole 24 is arranged in the center of the bottom plate 23. The bottom plate 23 gradually slopes downward from the outer circumference to the mounting hole 24. An annular groove 25 surrounding the mounting hole 24 is formed on the bottom plate 23, and a step 26 extending radially inward is formed on the top of the inner wall of the annular groove 25. The heating plate 13 is detachably connected to the step 26, and the upper surface of the heating plate 13 is lower than the upper edge of the outer wall of the annular groove 25. A sealing ring 18 is installed in the annular groove 25, and the sealing ring 18 is also sleeved on the outer circumference of the heating plate 13 to seal the heating plate 13.

[0044] In this embodiment, a liquid inlet hole 27 is formed on the outer wall of the annular groove 25, and the liquid inlet hole 27 is connected to the water outlet of the water pump 12. The water outlet of the water pump 12 is connected to the liquid inlet hole 27 through a water pipe, which is an existing conventional structure and will not be described in detail here. The outer periphery of the sealing ring 18 has an annular hollow structure, which forms a liquid receiving cavity 181 connected to the liquid inlet hole 27, and water flows into the liquid receiving cavity 181 from the liquid inlet hole 27. A liquid discharge hole 182 connected to the liquid receiving cavity 181 is also formed on the top of the sealing ring 18. In this embodiment, there are two liquid discharge holes 182, which are arranged relatively along the circumference of the sealing ring 18.

[0045] A boss 132 protruding upward is formed in the center of the upper surface of the heating plate 13, and a heating tube and a temperature sensor (not shown) are installed at the bottom of the heating plate 13. The heating plate 13 is heated by the heating tube. After the boss 132 is set, since it is higher than the bottom surface of the heating plate 13, when the water level drops below the liquid level of the boss 132, water is added to prevent the bottom surface of the heating plate 13 from being dry-burned, which will produce dry-burning odor and scale. At the same time, the boss 132 prevents the heating plate 13 from being installed unevenly, resulting in local dry-burning, and prevents the heating plate 13 from being dry-burned and affecting the life of the heating plate. In addition, the on and off of the heating tube of the heating plate can be controlled by the temperature sensor, and the condensed water in the cooking cavity 2 can be recycled and evaporated again, which can increase the continuous cooking time of a box of water and reduce the condensed water in the cavity.

[0046] In order to prevent microwave leakage, through holes 261 are opened on the step 26 of the bottom plate 23. In this embodiment, there are six through holes 261 and they are evenly spaced along the circumference of the step 26. A waveguide 19 corresponding to the through holes 261 is provided at the bottom of the step 26. A connecting column 131 corresponding to the through holes 261 is welded at the bottom of the heating plate 13. The connecting column 131 is a stud. When installing, the connecting column 131 is inserted into the corresponding waveguide 19. After the waveguide 19 is provided, microwaves are rebounded inside the waveguide 19 back into the cooking cavity 2 to prevent microwave leakage.

[0047] In the steam working mode, the water in the water tank 11 flows into the heating plate 13 through the water inlet 14 driven by the water pump 12, and generates steam after being heated by the heating plate 13, thereby realizing the steaming function. At the same time, the sealing ring 18 is squeezed by the heating plate 13 to seal the water and steam. At this time, there is no water in the liquid chamber 181. The condensed water generated during the steam operation enters the liquid chamber 181 through the drainage hole 182, and can flow back to the water tank 11 through the liquid inlet 27, thereby preventing the heating plate 13 from needing to heat and treat the condensed water after cooking. In addition, in the steam working mode, the water from the water pump 12 can also flow into the heating plate 13 through the liquid outlet 27, the liquid chamber 181 and the drainage hole 182 in turn, and evaporates to generate steam after being heated by the heating plate 13. The above two different water system can be selected to work one by one.

[0048] In the microwave working mode, water is injected into the liquid receiving cavity 181 through the liquid inlet hole 27, and the microwave is absorbed by the water inside the liquid receiving cavity 181, and will not leak from the gap between the cooking cavity 2 and the heating plate 13. At the same time, the liquid discharge hole 182 becomes an exhaust hole, and the water in the liquid receiving cavity 181 is heated by microwaves to become steam, and then enters the cooking cavity 2 through the liquid discharge hole 182, replenishing a small amount of lost water for the food. In addition, at the connection between the heating plate 13 and the cooking cavity 2, due to the design of the waveguide 19, i.e., the cutoff waveguide, there is almost no microwave leakage, thereby reducing the internal leakage of microwaves, making cooking safer and more reliable.

[0049] After the auxiliary heating tube 61 is used in this embodiment, the problem of condensed water on the microcrystalline glass plate at the top of the cooking cavity 2 is solved, and the liquid receiving cavity 181 of the sealing ring 18 solves the problem of condensed water on the heating plate 13 after steam cooking. When the user uses the steam cooking mode and starts the microwave function, the microwaves emitted from the top of the cooking cavity 2 can be directly absorbed by the food, avoiding the microwaves being absorbed by the condensed water in the cooking cavity 2, thereby accelerating the microwave heating speed.

Claims

1. A steamer, oven and microwave oven integrated machine, comprising a box (1) and a cooking cavity (2) arranged in the box, wherein a steam generator, a microwave generator and a grill generator are installed in the box (1), wherein the microwave generator comprises a waveguide (31) and a microwave stirrer (32), and wherein: A microwave penetrating plate (4) through which microwaves can pass is installed on the inner side of the top plate (21) of the cooking cavity (2); a stirring cavity (5) is formed between the microwave penetrating plate (4) and the top plate (21); the waveguide (31) is arranged on the outer side of the stirring cavity (5); the microwave stirrer (32) is arranged inside the stirring cavity (5); the barbecue generating device comprises an upper heating tube (61) and an auxiliary heating tube (62); the upper heating tube (61) is installed on the inner side of the top plate (21) of the cooking cavity (2) and is located below the microwave penetrating plate (4); The auxiliary heating pipe (62) is located outside the cooking cavity (2) and installed on the top of the stirring cavity (5); a hot air blower baffle (9) is installed on the rear side of the back plate (22) of the cooking cavity (2); a hot air chamber is formed between the hot air blower baffle (9) and the back plate (22); a perforation (221) capable of preventing microwaves from passing through is opened in the area of ​​the back plate (22) corresponding to the hot air chamber; a periphery (91) of the hot air blower baffle (9) and the back plate (22) are sealed; the steam generating device comprises a water tank (11), a water pump (12 ) and a heating plate (13), a water inlet hole (14) and an exhaust hole (15) are formed on the side wall of the cooking cavity (2), the water pump (12) is connected to the water path between the water outlet of the water tank (11) and the water inlet hole (14), the heating plate (13) is located in the cooking cavity (2) and is mounted on the bottom plate (23) of the cooking cavity; an upper mounting plate (16) is mounted above the cooking cavity (2), the water tank (11) is mounted on the upper mounting plate (16) and is hidden behind a control panel (17) on the front of the box, and the control panel (17) is provided on the cooking cavity (2). (17) is provided with an opening for the water tank to enter and exit; a mounting hole (24) is provided on the bottom plate (23) of the cooking cavity (2); an annular groove (25) surrounding the mounting hole (24) is formed on the bottom plate (23); a step (26) extending radially inward is formed at the top of the inner wall of the annular groove (25); the heating plate (13) is detachably connected to the step (26); a sealing ring (18) is installed in the annular groove (25), and the sealing ring (18) is sealed with the heating plate (13).

2. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: A heat transfer hole (51) with an upper flange is formed on the top wall of the stirring cavity (5); the heat transfer hole (51) is arranged along the auxiliary heating tube (62), and the tube wall of the auxiliary heating tube (62) is in contact with the heat transfer hole (51).

3. The integrated steamer oven and microwave oven according to claim 2, characterized in that: A heat insulation cover (7) is installed on the top of the stirring cavity (5), and the auxiliary heating pipe (62) is arranged inside the heat insulation cover (7).

4. The integrated steamer oven and microwave oven according to claim 1, characterized in that: The interior of the cooking cavity (2) is divided into an upper cavity (200) and a lower cavity (201) by a metal steaming plate (8).

5. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: The inner side of the upper heating tube (61) is surrounded by a avoiding structure for avoiding microwaves.

6. The integrated steamer oven and microwave oven according to claim 1, characterized in that: The microwave generating device further comprises a magnetron (33) installed on the rear side of the back plate (22) of the cooking cavity (2), a high-voltage capacitor (34), a high-voltage fuse (35) and a high-voltage transformer (36).

7. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: The microwave penetrating plate (4) is made of microcrystalline glass.

8. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: A liquid inlet hole (27) connected to the water outlet of the water pump (12) is formed on the outer wall of the annular groove (25); a liquid receiving cavity (181) connected to the liquid inlet hole (27) is formed inside the sealing ring (18); and a liquid discharge hole (182) connected to the liquid receiving cavity (181) is also formed on the top of the sealing ring (18).

9. The integrated steamer, oven and microwave oven according to claim 8, characterized in that: The liquid receiving chamber (181) is annular and is arranged on the outer periphery of the sealing ring (18).

10. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: The mounting hole (24) is arranged at the center of the bottom plate (23), the bottom plate (23) gradually slopes downward from the outer circumference to the mounting hole (24), and the upper surface of the heating plate (13) is lower than the upper edge of the outer wall of the annular groove (25).

11. The integrated steamer oven and microwave oven according to claim 1, characterized in that: A through hole (261) is opened on the step (26), a waveguide tube (19) corresponding to the through hole (261) is installed at the bottom of the step (26), and a connecting column (131) corresponding to the through hole (261) is installed at the bottom of the heating plate (13), and the connecting column (131) is inserted into the corresponding waveguide tube (19).

12. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: A boss (132) protruding upward is formed at the center of the upper surface of the heating plate (13).

13. The integrated steamer, oven and microwave oven according to claim 1, characterized in that: An upper mounting plate (16) is mounted above the cooking cavity (2), and an air guide assembly (10) for discharging steam in the cooking cavity (2) is mounted on the upper mounting plate (16).

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