Steam generating device for cooking equipment

Abstract

A steam generating device for cooking equipment includes an inner pot, characterized in that: a mounting hole is formed on the bottom plate of the inner pot, an annular groove surrounding the mounting hole is formed on the bottom plate of the inner pot, a sealing ring is installed in the annular groove, a heating plate is installed in the mounting hole, the sealing ring is sleeved on the heating plate, a liquid inlet hole is formed 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 an exhaust hole connected to the liquid receiving cavity is also formed on the top of the sealing ring. The advantages of the present invention are that the steam generating device of the cooking equipment generates steam through a built-in heating plate structure, which solves the problems of low efficiency and condensation of the steam channel of an external steam generator, and in addition, a liquid receiving cavity is designed inside the sealing ring of the heating plate, and microwaves are absorbed by the liquid inside the liquid receiving cavity to prevent microwave leakage, thereby solving the problem of microwave leakage at the contact between the heating plate and the inner pot sheet metal.

Description

Technical Field

[0001] The invention relates to a cooking device, in particular to a steam generating device of the cooking device. Background Art

[0002] The existing steam generator is mainly used in electric steamers, which are usually arranged outside the inner pot. When working, the steam generator generates steam and passes it into the inner pot to cook food. The steam outlet generated by the structure of this steam generator is small, and the air outlet direction is fixed, which cannot cook food comprehensively. At the same time, the steam is easy to condense in the pipeline, and too much scale is generated to affect the quality of subsequent steam. Although there is also a structure in which the heating plate is placed on the bottom plate of the inner pot, which can avoid the above problems, the steam sealing structure needs to be carefully designed. If the heating plate and the inner pot are welded together, once the heating plate has a maintenance problem, the inner pot will be completely scrapped, which is too wasteful. If it is not welded, but the heating plate is fixed with screws or studs, it is impossible to prevent microwave leakage in the steam-microwave all-in-one machine or the steam-bake-microwave all-in-one machine, which will bring safety hazards. In addition, it is difficult to clean the scale of the external steam generator, and a return water system needs to be added, which is costly. In summary, further improvements need to be made to the existing steam generating device. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a steam generating device for a cooking device capable of sealing steam and effectively preventing microwave leakage in view of the above-mentioned prior art status.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: the steam generating device of the cooking equipment includes an inner pot, which is characterized in that: a mounting hole is opened on the bottom plate of the inner pot, an annular groove surrounding the mounting hole is formed on the bottom plate of the inner pot, a sealing ring is installed in the annular groove, a heating plate is installed in the mounting hole, the sealing ring is sleeved on the heating plate, a liquid inlet hole is opened 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 an exhaust hole connected to the liquid receiving cavity is also opened on the top of the sealing ring.

[0005] In order to provide a better sealing connection structure between the sealing ring and the heating plate, the inner circumference of the sealing ring has a groove for the heating plate to be inserted into.

[0006] In order to ensure the steam discharge amount and discharge effect, there are at least two exhaust holes which are evenly spaced on the sealing ring.

[0007] Further preferably, the liquid receiving chamber is annular and is arranged on the outer periphery of the sealing ring.

[0008] In order to facilitate the disassembly and assembly of the heating plate, the inner wall top of the annular groove forms a step extending radially inward, and the heating plate is detachably connected to the step. In this way, once the heating plate fails, it only needs to be disassembled without replacing the entire inner tank.

[0009] In order to effectively prevent microwave leakage, a through hole is opened on the step, a waveguide corresponding to the through hole is provided 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.

[0010] In order to obtain a better microwave leakage prevention effect, there are at least three through holes which are evenly distributed along the circumference of the step.

[0011] In order to facilitate the reflux of condensed water, the mounting hole is arranged in the center of the inner pot bottom plate, the inner pot bottom plate gradually slopes downward from the outer periphery 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.

[0012] Preferably, the mounting hole is a circular hole, and correspondingly, the annular groove is a circular groove, and the heating plate is a circular plate.

[0013] 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.

[0014] As a preferred embodiment of any of the above solutions, a heating tube is installed at the bottom of the heating plate.

[0015] Compared with the prior art, the advantages of the present invention are: the steam generating device of the cooking equipment generates steam through a built-in heating plate structure, which solves the problems of low efficiency of an external steam generator and condensation in the steam channel; in addition, a liquid receiving cavity is designed inside the sealing ring of the heating plate, and the liquid inside the liquid receiving cavity absorbs microwaves to prevent microwave leakage, thereby solving the problem of microwave leakage at the contact between the heating plate and the inner pot sheet metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of another angle of an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the assembly of an embodiment of the present invention;

[0019] Figure 4A structural cross-sectional view of an embodiment of the present invention;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0021] Figure 6 is another structural cross-sectional view of an embodiment of the present invention;

[0022] Figure 7 for Figure 6 A magnified schematic diagram of part B;

[0023] Figure 8 It is a schematic diagram of an exploded view of an embodiment of the present invention;

[0024] Fig. 9 for Figure 8 Enlarged schematic diagram of part C. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 9 As shown, the steam generating device of the cooking device of this embodiment includes an inner pot 1, a circular mounting hole 12 is opened in the center of the inner pot bottom plate 11, the inner pot bottom plate 11 gradually tilts downward from the outer circumference to the mounting hole 12, and an annular groove 13 surrounding the mounting hole 12 is formed on the inner pot bottom plate 11, and the annular groove 13 is in a circular ring shape. The top of the inner wall of the annular groove 13 forms a step 15 extending radially inward, the heating plate 2 is a circular plate, and the outer periphery of the heating plate 2 is detachably connected to the step 15. When the heating plate 2 is installed, the upper surface of the heating plate 2 is lower than the upper edge of the outer wall of the annular groove 13.

[0027] The heating plate 2 and the inner pot 1 are sealed by a sealing ring 3. Specifically, the sealing ring 3 is installed in the annular groove 13 and is sleeved on the heating plate 2. In addition, the inner periphery of the sealing ring 3 has a groove 33, and the outer periphery of the heating plate 2 is inserted into the groove 33 to obtain a better sealing effect.

[0028] In this embodiment, a liquid inlet hole 14 is formed on the outer wall of the annular groove 13, and the outer periphery of the sealing ring 3 has an annular hollow structure, which forms a liquid receiving cavity 31 connected to the liquid inlet hole 14, and the liquid flows into the liquid receiving cavity 31 from the liquid inlet hole 14. Usually, the liquid flowing from the liquid inlet hole 14 is water. An exhaust hole 32 connected to the liquid receiving cavity 31 is also formed on the top of the sealing ring 3. In this embodiment, there are two exhaust holes 32, which are arranged opposite to each other along the circumference of the sealing ring 3.

[0029] In order to prevent microwave leakage, through holes 16 are opened on the step 15 of the inner pot bottom plate 11. In this embodiment, there are six through holes 16 and they are evenly spaced along the circumference of the step 15. A waveguide 17 corresponding to the through holes 16 is provided at the bottom of the step 15. A connecting column 21 corresponding to the through holes 16 is welded at the bottom of the heating plate 2. The connecting column 21 is a stud. When installing, the connecting column 21 is inserted into the corresponding waveguide 17. After the waveguide 17 is provided, the microwave is allowed to bounce back to the inner pot 1 inside the waveguide 17 to prevent microwave leakage.

[0030] In the embodiment, a boss 22 protruding upward is formed in the center of the upper surface of the heating plate 2, and a heating tube 23 is installed at the bottom of the heating plate 2. The heating plate 2 is heated by the heating tube 23. After the boss 22 is set, since it is higher than the bottom surface of the heating plate 2, when the water level drops below the liquid level of the boss 22, water is added to prevent the bottom surface of the heating plate 2 from being dry-burned, generating dry-burning odor and scale. At the same time, the boss 22 prevents the heating plate 2 from being unevenly installed, resulting in local dry-burning, and prevents the heating plate 2 from being dry-burned and affecting the life of the heating plate.

[0031] In the microwave working mode, water is injected into the liquid holding cavity 31 through the liquid inlet hole 14, and the microwave is absorbed by the water inside the liquid holding cavity 31, and will not leak from the gap between the inner pot 1 and the heating plate 2. At the same time, the water in the liquid holding cavity 31 is heated into steam by the microwave and enters the inner pot 1 through the exhaust hole 32 to replenish a small amount of lost water for the food. In addition, at the connection between the heating plate 2 and the inner pot 1, due to the design of the waveguide 17, i.e., the cutoff waveguide, there is almost no microwave leakage, thereby reducing the internal leakage of microwaves, making cooking safer and more reliable.

[0032] In the steam working mode, the sealing ring 3 is squeezed by the heating plate 2 to seal water and steam. At this time, there is no water in the liquid receiving chamber 31. The condensed water generated during the steam operation enters the liquid receiving chamber 31 through the exhaust hole 32 and is discharged from the machine through the liquid inlet hole 14, preventing the heating plate 2 from needing to heat the condensed water after cooking.

Claims

1. A steam generating device for a cooking device, comprising an inner pot (1), characterized in that: An installation hole (12) is formed on the bottom plate (11) of the inner pot, and an annular groove (13) surrounding the installation hole (12) is formed on the bottom plate (11) of the inner pot. A sealing ring (3) is installed in the annular groove (13), and a heating plate (2) is installed in the installation hole (12). The sealing ring (3) is sleeved on the heating plate (2). A liquid inlet hole (14) is formed on the outer wall of the annular groove (13). A liquid receiving cavity (31) connected to the liquid inlet hole (14) is formed inside the sealing ring (3). An exhaust hole (32) connected to the liquid receiving cavity (31) is also formed on the top of the sealing ring (3). The liquid receiving cavity (31) is annular and arranged on the outer periphery of the sealing ring (3). A step (15) extending radially inward is formed on the top of the inner wall of the annular groove (13), and the heating plate (2) is detachably connected to the step (15).

2. The steam generating device of the cooking device according to claim 1, characterized in that: The inner circumference of the sealing ring (3) has a slot (33) for the heating plate (2) to be inserted into.

3. The steam generating device of the cooking device according to claim 1, characterized in that: There are at least two exhaust holes (32) which are evenly spaced and spaced on the sealing ring (3).

4. The steam generating device of the cooking apparatus according to claim 1, characterized in that: A through hole (16) is opened on the step (15), a waveguide tube (17) corresponding to the through hole (16) is provided at the bottom of the step (15), a connecting column (21) corresponding to the through hole (16) is installed at the bottom of the heating plate (2), and the connecting column (21) is inserted into the corresponding waveguide tube (17).

5. The steam generating device of the cooking apparatus according to claim 4, characterized in that: There are at least three through holes (16) which are evenly distributed along the circumference of the step (15).

6. The steam generating device of the cooking apparatus according to claim 1, characterized in that: The mounting hole (12) is arranged at the center of the inner pot bottom plate (11), the inner pot bottom plate (11) gradually slopes downward from the outer periphery to the mounting hole (12), and the upper surface of the heating plate (2) is lower than the upper edge of the outer wall of the annular groove (13).

7. The steam generating device of the cooking apparatus according to claim 1, characterized in that: A boss (22) protruding upward is formed in the center of the upper surface of the heating plate (2).

8. The steam generating device of the cooking apparatus according to any one of claims 1 to 7, characterized in that: A heating tube (23) is installed at the bottom of the heating plate (2).

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