Steam generating system for cooking equipment

Abstract

A steam generating system for a cooking device includes an inner pot, a mounting hole is formed on a bottom plate of the inner pot, a water inlet hole is formed around the mounting hole, a heating plate and a water guide ring are installed in the mounting hole, the water guide ring is arranged below the heating plate, and the water guide ring has an annular water flow channel connected to the water inlet hole inside, and the water entering the inner pot from the water inlet can flow into the heating plate after passing through the annular water flow channel. The advantage of the present invention is that the steam generating system of the cooking device can increase the heat dissipation area of ​​the heating plate by arranging a hollow water guide ring below the heating plate, when the water flows into the inner pot, it will first flow into the annular water flow channel of the water guide ring, and then flow to the heating plate to generate steam, and the water that is not evaporated in time will flow into the water guide ring again at the same time, there is continuous convection heat exchange between the water guide ring and the water flow, so that the temperature rise at the bottom of the machine is effectively controlled, and the excess heat heats the flowing water, reducing energy dissipation and waste.

Description

Technical Field

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

[0002] The existing steam generator is mainly used in electric steamers, which are usually placed 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 exhaust direction is fixed, so it is impossible to cook food in all directions. 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 heating plate placed on the bottom plate of the inner pot, which can avoid the above problems, it requires careful steam sealing. 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, and 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, placing the heating plate on the bottom plate of the inner pot will affect the temperature rise at the bottom of the cooking equipment, causing the bottom of the machine to overheat. If the cooking equipment is placed in a cabinet, the excessive temperature rise at the bottom will cause a fire, resulting in serious safety accidents. Currently, the main method to solve the problem of excessive temperature rise at the bottom is to increase the distance between the bottom and the heating plate, which will incur additional costs and increase the size of the machine, and the effect is not obvious. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a steam generating system for a cooking device capable of increasing convective heat transfer and reducing bottom temperature rise in view of the above-mentioned prior art status.

[0004] The second technical problem to be solved by the present invention is to provide a steam generating system for a cooking device capable of preventing microwave leakage in view of the above-mentioned prior art status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the steam generating system 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, a water inlet hole is opened around the mounting hole, a heating plate and a water guide ring are installed in the mounting hole, the water guide ring is arranged below the heating plate, and the water guide ring has an annular water flow channel connected with the water inlet hole, so that water entering the inner pot from the water inlet hole can flow into the heating plate after passing through the annular water flow channel.

[0006] The heating plate and the water guide ring can have a variety of installation structures. Preferably, a sunken step lower than the bottom plate of the inner tank is provided around the installation hole, and an annular wall is formed between the sunken step and the bottom plate of the inner tank, and the heating plate and the water guide ring are installed on the sunken step.

[0007] In order to allow water outside the inner tank to enter the inner tank and be fully heated by the heating plate, the water guide ring includes an inner ring and an outer ring, the inner ring has an inner U-shaped groove opening upward and an upper flange extending outward from the outer wall of the inner U-shaped groove along the circumferential direction, the outer ring has an outer U-shaped groove opening upward and a lower flange extending outward from the outer wall of the outer U-shaped groove along the circumferential direction, the inner U-shaped groove is arranged in the outer U-shaped groove, the sinking step extends between the upper flange and the lower flange, and the water inlet of the annular water flow channel is formed between the sinking step and the upper flange, the water inlet hole is opened on the annular wall, the water outlet of the annular water flow channel is formed between the inner wall of the inner U-shaped groove and the inner wall of the outer U-shaped groove, and a water outlet hole is opened at the position of the heating plate corresponding to the water outlet.

[0008] In order to allow the water heated by the heating disk to flow back into the annular water flow channel of the water guide ring, a gap is left between the outer edge of the heating disk and the annular wall.

[0009] In order to prevent the hot water flowing out of the water outlet from leaking to the bottom of the heating plate, a sealing ring is installed between the top of the inner U-shaped groove and the bottom of the heating plate.

[0010] Further preferably, the inner ring and the outer ring are both circular rings, and correspondingly, the heating disk is a circular disk.

[0011] The technical solution adopted by the present invention to solve the second technical problem is as follows: in the steam generating system of the cooking device, the water guide ring is a metal part, and a metal yoke flow plate for preventing microwave leakage is provided in the inner U-shaped groove, and the metal yoke flow plate is vertically arranged and distributed at intervals along the circumference of the inner U-shaped groove. After the metal choke plate is provided, microwave leakage can be effectively prevented, so that when the microwave leaks out through the gap between the heating plate and the inner pot, it hits the choke structure, rotates, and then is consumed, thereby effectively preventing microwave leakage.

[0012] In order to produce more steam, 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 circumference to the mounting hole, and the upper surface of the heating plate is not higher than the upper edge of the annular wall.

[0013] In order to introduce water outside the inner tank into the water guide ring, a water inlet pipe is provided below the bottom plate of the inner tank, the water inlet pipe surrounds the annular wall, and the water outlet of the water inlet pipe corresponds to the water inlet hole.

[0014] In order to improve the heat dissipation effect of the heating plate, an annular heat sink is installed at the bottom of the water guide ring.

[0015] In order to facilitate the disassembly of the heating plate and the water guide ring, the heating plate and the water guide ring are detachably connected to the bottom plate of the inner tank. In this way, once the heating plate fails, it only needs to be disassembled without replacing the entire inner tank.

[0016] Compared with the prior art, the advantages of the present invention are: the steam generating system of the cooking equipment can increase the heat dissipation area of ​​the heating plate by arranging a hollow water guide ring under the heating plate. When the water flows into the inner pot, it will first flow into the annular water flow channel of the water guide ring, and then flow to the heating plate to generate steam. At the same time, the water that is not evaporated in time will flow into the water guide ring again. There is continuous convection heat exchange between the water guide ring and the water flow, so that the temperature rise at the bottom of the machine is effectively controlled, and the excess heat heats the flowing water, reducing energy dissipation and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another angle of an embodiment of the present invention;

[0019] Figure 3 It is a three-dimensional exploded view of an embodiment of the present invention;

[0020] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0021] Figure 5 A structural cross-sectional view of an embodiment of the present invention;

[0022] Figure 6 for Figure 5 Schematic diagram of the enlarged portion B. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 6 As shown, the steam generating system 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 is gradually inclined downward from the outer circumference to the mounting hole, and a sinking step 14 lower than the inner pot bottom plate 11 is provided around the mounting hole 12, and an annular wall 15 is formed between the sinking step 14 and the inner pot bottom plate 11, and a water inlet hole 13 is opened on the annular wall 15. The heating plate 2 and the water guide ring 3 are installed in the mounting hole 12. Specifically, the heating plate 2 and the water guide ring 3 are detachably installed on the sinking step 14, and the water guide ring 3 is located below the heating plate 2. The heating plate 2 of this embodiment is a circular plate, and a gap is left between the outer edge of the heating plate 2 and the annular wall 15, and the upper surface of the heating plate 2 is not higher than the upper edge of the annular wall 15. In addition, a water inlet pipe 6 is provided below the inner tank bottom plate 11 , and the water inlet pipe 6 surrounds the annular wall 15 . The water outlet of the water inlet pipe 6 corresponds to the water inlet hole 13 , and water is injected into the inner tank through the water inlet pipe 6 .

[0025] The water guide ring 3 of this embodiment is a circular ring, which includes an inner ring 31 and an outer ring 32, and an annular water flow channel 30 is formed between the inner ring 31 and the outer ring 32. Among them, the inner ring 31 has an inner U-shaped groove 311 opening upward and an upper flange 312 extending outward from the outer wall of the inner U-shaped groove along the circumferential direction; the outer ring 32 has an outer U-shaped groove 321 opening upward and a lower flange 322 extending outward from the outer wall of the outer U-shaped groove along the circumferential direction; the inner U-shaped groove 311 is arranged in the outer U-shaped groove 321, the sinking step 14 extends between the upper flange 312 and the lower flange 322, and the water inlet of the annular water flow channel 30 is formed between the sinking step 14 and the upper flange 312, and the water outlet of the annular water flow channel 30 is formed between the inner wall of the inner U-shaped groove 311 and the inner wall of the outer U-shaped groove 321, and a water outlet hole 21 is opened at the position of the heating plate 2 corresponding to the water outlet. In addition, in order to prevent hot water leakage between the water guide ring 3 and the heating plate 2 , a sealing ring 4 is installed between the top of the inner U-shaped groove 311 and the bottom of the heating plate 2 .

[0026] Considering the use in a microwave environment, the steam generator of this embodiment needs to prevent not only water leakage but also microwave leakage. The water guide ring 3 of this embodiment is a metal part, and a metal yoke plate 5 for preventing microwave leakage is provided in the inner U-shaped groove 311 of the water guide ring 3. The metal yoke plate 5 is vertically arranged and distributed at intervals along the circumference of the inner U-shaped groove 311. After the metal choke plate 5 is arranged, when the microwave leaks out through the gap between the heating plate 2 and the inner pot 1, it hits the choke structure, rotates, and then is consumed, thereby effectively preventing the leakage of microwaves.

[0027] When the steam generator starts working, water flowing out of the water pump (not shown) flows into the annular water flow channel 30 of the water guide ring 3 from the water inlet hole 13 of the inner tank 1 through the water inlet pipe 6. After the water in the annular water flow channel 30 is heated by the heating plate 2, it flows out from the water outlet hole 21 on the heating plate 2 to the upper surface of the heating plate 2 and evaporates to generate steam. The water that has not been evaporated flows back to the annular water flow channel 30 through the gap between the heating plate 2 and the annular wall 15. There is continuous convection heat exchange between the water guide ring 3 and the water flow, so that the temperature rise at the bottom of the machine is effectively controlled, and the excess heat heats the flowing water, reducing energy dissipation and waste. In addition, the metal water guide ring 3 increases the heat dissipation area of ​​the heating plate 2, and the annular heat sink 7 installed at the bottom of the water guide ring 3 can further improve the heat dissipation effect.

Claims

1. A steam generating system for a cooking device, comprising an inner pot (1), characterized in that: An installation hole (12) is provided on the bottom plate (11) of the inner tank, and a water inlet hole (13) is provided around the installation hole (12). A heating plate (2) and a water guide ring (3) are installed in the installation hole (12). The water guide ring (3) is arranged below the heating plate (2), and the water guide ring (3) has an annular water flow channel (30) inside that is connected to the water inlet hole (13). Water entering the inner tank (1) from the water inlet hole (13) can flow through the annular water flow channel (30) and then The heating plate (2) is inserted into the heating plate (2), the periphery of the mounting hole (12) is provided with a sinking step (14) which is lower than the bottom plate (11) of the inner tank, an annular wall (15) is formed between the sinking step (14) and the bottom plate (11) of the inner tank, the heating plate (2) and the water guide ring (3) are installed on the sinking step (14), the water guide ring (3) comprises an inner ring (31) and an outer ring (32), the inner ring (31) has an inner U-shaped groove (311) opening upward and a water guide ring (32) extending from the outer wall of the inner U-shaped groove The outer ring (32) has an upper flange (312) extending outwardly in the circumferential direction, the outer ring (32) has an outer U-shaped groove (321) opening upward and a lower flange (322) extending outwardly in the circumferential direction from the outer wall of the outer U-shaped groove, the inner U-shaped groove (311) is arranged in the outer U-shaped groove (321), the sinking step (14) extends between the upper flange (312) and the lower flange (322), and the annular water flow channel (30) is formed between the sinking step (14) and the upper flange (312). A water inlet, the water inlet hole (13) is opened on the annular wall (15), the water outlet of the annular water flow channel (30) is formed between the inner wall of the inner U-shaped groove (311) and the inner wall of the outer U-shaped groove (321), a water outlet hole (21) is opened at the position of the heating plate (2) corresponding to the water outlet, a gap is left between the outer edge of the heating plate (2) and the annular wall (15), and the heating plate (2) and the water guide ring (3) are detachably connected to the bottom plate (11) of the inner tank.

2. The steam generating system of the cooking device according to claim 1, characterized in that: A sealing ring (4) is installed between the top of the inner U-shaped groove (311) and the bottom of the heating plate (2).

3. The steam generating system of the cooking device according to claim 1, characterized in that: The water guide ring (3) is a metal part, and a metal yoke flow plate (5) for preventing microwave leakage is provided in the inner U-shaped groove (311). The metal yoke flow plates (5) are arranged vertically and distributed at intervals along the circumference of the inner U-shaped groove (311).

4. The steam generating system of the cooking device according to claim 1, characterized in that: The mounting hole (12) is arranged at the center of the inner tank bottom plate (11), the inner tank 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 not higher than the upper edge of the annular wall (15).

5. The steam generating system of the cooking device according to claim 1, characterized in that: A water inlet pipe (6) is provided below the inner tank bottom plate (11), the water inlet pipe (6) surrounds the annular wall (15), and the water outlet of the water inlet pipe (6) corresponds to the water inlet hole (13).

6. The steam generating system of the cooking device according to claim 1, characterized in that: An annular heat sink (7) is installed at the bottom of the water guide ring (3).

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