A steam generating device

Abstract

The utility model discloses a steam generating device relates to the technical field of steam electric appliance, including the mounting seat body and the steam generating water pipe and heating device integrated in the mounting seat body, wherein: the top of mounting seat body is equipped with the steam -liquid separation chamber and with steam -liquid separation chamber communication's steam outlet, the export end of steam generating water pipe is located in steam -liquid separation chamber, and the export end is indirectly communicated with steam outlet through steam -liquid separation chamber, steam -liquid separation chamber is equipped with at least one baffle, forms the labyrinth channel for prolonging the flow path of steam -liquid mixture, steam generating water pipe is spirally arranged, and heating device is steam generating water pipe heating and is placed in the tubular inner chamber of steam generating water pipe, and steam generating water pipe is located below steam -liquid separation chamber. The utility model makes the water vapor that enters the heating cavity more pure, thereby improves the steam temperature, and can improve the cooking efficiency further.

Description

Technical Field

[0001] This utility model relates to the field of steam electrical technology, specifically to a steam generating device. Background Technology

[0002] Steam cookers, as efficient and environmentally friendly cooking appliances, are widely used in modern kitchens. Their core component—the steam generator—is responsible for heating water and converting it into steam, providing a continuous supply of steam for the cooker. However, during the steam generation and transportation process, water vapor often mixes with liquid water. The presence of liquid water affects the dryness and temperature of the steam, thus impacting heating efficiency. Furthermore, liquid water entering the heating chamber quickly condenses, causing food to be soaked in condensate for extended periods, which negatively affects the food's texture and taste. Utility Model Content

[0003] In view of this, the present invention provides a steam generating device to solve the technical problems that, during the steam generation and transportation process, the mixing of water vapor and liquid water leads to a decrease in steam dryness and temperature, affecting heating efficiency, and that the condensate formed after liquid water enters the heating chamber soaks food for a long time, affecting the taste of the food.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A steam generating device includes a mounting base and a steam-generating water pipe and a heating device integrated within the mounting base, wherein:

[0006] The top of the mounting base is provided with a vapor-liquid separation chamber and a steam outlet connected to the vapor-liquid separation chamber. The outlet end of the steam generating water pipe is located inside the vapor-liquid separation chamber, and the outlet end is indirectly connected to the steam outlet through the vapor-liquid separation chamber.

[0007] The vapor-liquid separation chamber is equipped with at least one baffle to form a labyrinth channel, which is used to extend the flow path of the vapor-liquid mixture;

[0008] The steam generating water pipe is arranged in a spiral shape. The heating device heats the steam generating water pipe and is placed in the cylindrical inner cavity of the steam generating water pipe. The steam generating water pipe is located below the vapor-liquid separation chamber.

[0009] Furthermore, the partitions are C-shaped, with an upper flow channel at the top of the corresponding partitions, and a side flow channel formed between adjacent partitions. The outlet end of the steam generating water pipe is located in the central area of ​​the labyrinth passage.

[0010] Furthermore, the top of the mounting base is provided with an upward-facing recess, which is sealed by an end cap, which is fixed to the opening of the recess by bolts or clips.

[0011] Furthermore, the heating device is spiral-shaped, and the steam generating water pipe and the heating device are respectively matched and installed through corresponding spiral channels set on the mounting base, with the axes of the two spiral channels coinciding.

[0012] Furthermore, the heating device extends to the bottom region of the vapor-liquid separation chamber for secondary heating and vaporization of the liquid water within the chamber.

[0013] Furthermore, the mounting base is made of thermally conductive material, and the steam generating water pipe and heating device are in close contact with the wall of the corresponding spiral channel so that heat can be conducted through the mounting base to the vapor-liquid separation chamber.

[0014] Furthermore, the outlet direction at the outlet end is perpendicular to the steam flow path of the labyrinth passage.

[0015] Furthermore, a one-way valve is installed at the steam outlet to prevent steam from flowing back into the vapor-liquid separation chamber.

[0016] As can be seen from the above technical solution, the advantages of this utility model are:

[0017] 1. High-efficiency vapor-liquid separation: By setting up a vapor-liquid separation chamber, liquid water can be effectively separated from steam before it is ejected. Utilizing the difference in specific gravity, the liquid water automatically settles to the bottom of the vapor-liquid separation chamber, thus achieving high-efficiency vapor-liquid separation through physical structure, ensuring the dryness and temperature of the steam, and improving heating efficiency.

[0018] 2. Enhanced Separation Effect: The labyrinthine channel within the vapor-liquid separation chamber further lengthens the buffer path for the vapor-liquid mixing medium. This results in better vapor-liquid separation, ensuring the purity of the steam and reducing the impact of liquid water on steam quality.

[0019] 3. Space Utilization and Heat Recovery: The steam-generating water pipe and heating device adopt a spiral structure and are installed in the spiral channel within the mounting base. This structure not only saves space but also allows the heating device to heat the mounting base simultaneously with the steam-generating water pipe. This enables the residual liquid water in the vapor-liquid separation chamber to be re-vaporized and effectively utilized, improving the overall heat energy utilization efficiency. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2This is a cross-sectional view of the internal structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the vapor-liquid separation chamber of this utility model.

[0024] Figure 4 This is a schematic diagram of the layout of the steam generating water pipe and heating device of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1-mounting base, 11-vapor-liquid separation chamber, 12-steam outlet, 13-spiral channel, 14-partition plate, 2-end cover, 3-steam generating water pipe, 31-outlet end, 4-heating device. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0027] refer to Figures 1 to 4 ,like Figure 1 As shown, this embodiment provides a steam generating device, which includes a mounting base 1 for connecting to a steam cooking device. The mounting base 1 contains a steam generating water pipe 3 and a heating device 4 for heating the water in the steam generating water pipe 3 to generate steam.

[0028] Since the generated steam often contains a small amount of liquid water, the presence of liquid water can affect the dryness and temperature of the steam, thereby reducing heating efficiency. Liquid water entering the heating chamber will quickly turn into condensate, and prolonged contact between the condensate and food may cause the food to be over-soaked, affecting its taste.

[0029] To overcome the problems caused by heating a mixture of steam and liquid water, this invention designs a new steam generating device. The top of the mounting base 1 of the steam generating device is equipped with a vapor-liquid separation chamber 11 and a steam outlet 12 connected to the vapor-liquid separation chamber 11. The steam outlet 12 is used to guide the separated pure steam into the steam boiler. The outlet end 31 of the steam generating water pipe 3 is located inside the vapor-liquid separation chamber 11, and is indirectly connected to the steam outlet 12 through the vapor-liquid separation chamber 11. The inlet end of the steam generating water pipe 3 is connected to the liquid supply device. This technical solution uses the above method to prevent the outlet end 31 from being directly connected to the steam outlet 12. Through the indirect connection via the vapor-liquid separation chamber 11 located between the outlet end 31 and the steam outlet 12, the vapor-liquid mixture entering the vapor-liquid separation chamber 11, during its flow, utilizes the difference in specific gravity between the vapor and liquid to cause the liquid water to fall directly to the bottom of the vapor-liquid separation chamber 11 for temporary storage, ensuring that the steam supplied to the steam boiler is pure and free of liquid water impurities. Through the design of the physical structure, water vapor and liquid water are effectively separated in the vapor-liquid separation chamber 11.

[0030] In this embodiment, a method is adopted to improve the vapor-liquid separation effect. This method allows the vapor-liquid mixture sufficient separation time within the vapor-liquid separation chamber 11. Specifically, in this embodiment, preferably, a labyrinth channel is formed within the vapor-liquid separation chamber 11 using one or more baffles 14 to extend the flow path of the vapor-liquid mixture. This labyrinth channel can change the flow direction of water vapor, increasing the contact area and contact time between the labyrinth channel and liquid water. This prevents the steam entering the vapor-liquid separation chamber 11 from being rapidly ejected from the steam outlet 12. Thus, a good vapor-liquid separation effect is achieved through the physical structure.

[0031] In practical use, the labyrinth channel can guide the steam flow to move along the radial section, or along the axial direction, or a combination of both.

[0032] In this embodiment, preferably, the labyrinth channel is designed to guide the steam flow along a radial cross-section, and the outlet direction of the outlet end 31 is perpendicular to the steam flow path of the labyrinth channel. Specifically, the baffle 14 has a C-shaped structure, and the axis of the baffle 14 is parallel to the axis of the cylindrical vapor-liquid separation chamber 11. Side flow channels are formed between adjacent baffles 14. To maximize the flow channel of the vapor-liquid mixture, the outlet end 31 of the steam generating water pipe 3 is located in the central region of the labyrinth channel. To enable the steam flow to quickly enter the labyrinth channel, an upper flow channel is provided on the top of the baffle 14 near the center of the labyrinth channel for the steam flow to quickly enter the labyrinth channel. The upper flow channel and the corresponding side flow channel cooperate to ensure that the steam flow can quickly and smoothly enter the labyrinth channel.

[0033] Other embodiments that can form a labyrinth channel are as follows: by setting multiple spaced guide vanes in the vapor-liquid separation chamber 11, a flow channel is formed by the gap between the guide vanes and the inner wall of the vapor-liquid separation chamber 11, and an S-shaped labyrinth channel is formed between adjacent guide vanes. The S-shaped labyrinth channel can allow the vapor flow to move radially or axially upward depending on the setting direction of the guide vanes.

[0034] To prevent the baffle 14 and / or the flow guide plate from rusting after long-term use, the surface of the baffle 14 and the flow guide plate may be coated with a hydrophobic coating. The coating material is polytetrafluoroethylene or silicon carbide ceramic material, and the surface roughness Ra≤0.8μm.

[0035] To facilitate the use of the vapor-liquid separation chamber 11, the top of the mounting base 1 has an upward-facing recessed cavity, and an end cap 2 is provided at the opening of the recessed cavity, thus forming a sealed vapor-liquid separation chamber 11. The corresponding baffle 14 abuts against the end cap 2, making the flow guidance of vapor more reliable. The end cap 2 can tightly seal the opening of the vapor-liquid separation chamber 11, effectively preventing steam leakage and the entry of external impurities. In addition, this design also facilitates the cleaning of the vapor-liquid separation chamber 11, and it can remain clean even after long-term use.

[0036] The upward-facing concave cavity facilitates the fabrication of the labyrinth passage.

[0037] To facilitate the later maintenance and cleaning of the gas-liquid separation chamber 11, the end cover 2 is fixed to the opening of the cavity by bolts or clips to form a separable connection, making the disassembly and assembly of the end cover 2 convenient.

[0038] In this embodiment, to ensure that the water entering the steam generating water pipe 3 is fully heated and vaporized, the steam generating water pipe 3 is designed in a vertical spiral shape. The outlet end 31 of the steam generating water pipe 3 extends axially into the vapor-liquid separation chamber 11. The heating device 4 heats the steam generating water pipe 3 and is placed inside the cylindrical inner cavity of the steam generating water pipe 3, concentrating the heat as much as possible within the cylindrical inner cavity of the steam generating water pipe 3, so that the heat is used efficiently and the water is quickly heated to a boiling state, thereby generating steam.

[0039] In actual use, the heating device 4 can surround the vertical spiral steam-generating water pipe 3 to heat the water to a boiling state, thereby generating steam. At the same time, the outlet end 31 of the steam-generating water pipe 3 extends axially into the vapor-liquid separation chamber 11.

[0040] Furthermore, in practical use, the steam generating water pipe 3 can also be arranged in a planar spiral configuration. The heating device 4 is positioned above and below the spiral path of the steam generating water pipe 3, ensuring that the water can fully contact and be heated to boiling point during flow, thereby generating steam. The outlet end 31 of the steam generating water pipe 3 extends axially into the vapor-liquid separation chamber 11. This arrangement allows the water to fully contact the heating device 4 during flow, ensuring complete boiling of the water and efficient steam generation.

[0041] In this embodiment, the heating device 4 is preferably a spiral heating tube. Both the positive and negative poles of the spiral heating tube extend from the bottom of the mounting base 1.

[0042] The heating module can also be a PTC ceramic heater or an electromagnetic induction heating device, with a heating power of 800-2000W, and the surface of the heating module is provided with an anti-corrosion coating. When using a PTC ceramic heater, the PTC self-limiting heating element will control the heating module to stop working by using the automatic temperature limit set in the control system when it detects an abnormal water level in the steam generating water pipe 10.

[0043] To ensure that the heat generated by the heating device 4 is fully absorbed by the steam-generating water pipe 3, the mounting base 1 is provided with two spiral channels 13 for mounting the steam-generating water pipe 3 and the heating device 4. The pitch of the spiral channels 13 matches the spiral structure of the steam-generating water pipe 3 and the heating device 4. The two spiral channels 13 are tightly wound and their axes coincide, ensuring that the steam-generating water pipe 3 can contact the heat to the maximum extent during the heating process.

[0044] In this application, the mounting base 1 is made of a heat-conducting material. The steam-generating water pipe 3 and the heating device 4 are in close contact with the wall of the corresponding spiral channel 13. Heat transfer through the contact between the heating device 4 and the mounting base 1 ensures uniform heating of the steam-generating water pipe 3 while simultaneously conducting heat through the mounting base 1 to the vapor-liquid separation chamber 11. This guarantees complete boiling of the water and efficient steam generation. Simultaneously, this design can heat and maintain the temperature of the vapor-liquid mixture temporarily stored in the vapor-liquid separation chamber 11, allowing the liquid water entering the chamber to continue to be heated and vaporized, thereby improving the overall system efficiency and stability. Furthermore, this design prevents condensate from remaining in the vapor-liquid separation chamber 11 after shutdown, ensuring the chamber remains dry and effectively preventing the growth of bacteria and microorganisms. In summary, this design not only improves the system's operating efficiency but also enhances the long-term stability and reliability of the equipment, reducing maintenance costs and downtime risks.

[0045] In this invention, a one-way valve is installed at the steam outlet 12 to prevent steam from flowing back into the vapor-liquid separation chamber 11, causing condensate to accumulate and easily breed bacteria, which could affect human health.

[0046] In this embodiment, both the steam generating water pipe 3 and the heating device 4 are located below the vapor-liquid separation chamber 11, with the heating device 4 extending to the bottom region of the vapor-liquid separation chamber 11 for secondary heating and vaporization of the liquid water within the chamber. The steam generating water pipe 3 is made of high-temperature resistant material to ensure stable operation in high-temperature environments; while the heating device 4 is equipped with a high-efficiency electric heating element, capable of rapidly heating water to boiling point in a short time. This design effectively reduces the horizontal footprint of the steam generating device, making the entire steam cooking device more compact and smaller in appearance.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steam generating device, comprising a mounting base (1) and a steam generating water pipe (3) and a heating device (4) integrated within the mounting base (1), characterized in that: The top of the mounting base (1) is provided with a vapor-liquid separation chamber (11) and a steam outlet (12) connected to the vapor-liquid separation chamber (11). The outlet end (31) of the steam generating water pipe (3) is located inside the vapor-liquid separation chamber (11), and the outlet end (31) is indirectly connected to the steam outlet (12) through the vapor-liquid separation chamber (11). The vapor-liquid separation chamber (11) is provided with at least one baffle (14) to form a labyrinth channel for extending the flow path of the vapor-liquid mixture; The steam generating water pipe (3) is arranged in a spiral shape. The heating device (4) heats the steam generating water pipe (3) and is placed in the cylindrical inner cavity of the steam generating water pipe (3). The steam generating water pipe (3) is located below the vapor-liquid separation chamber (11).

2. The steam generating device according to claim 1, characterized in that, The partition (14) has a C-shaped structure, and the top of the partition (14) is provided with an upper flow channel. A side flow channel is formed between adjacent partitions (14). The outlet end (31) of the steam generating water pipe (3) is located in the central area of ​​the maze passage.

3. The steam generating device according to claim 1, characterized in that, The top of the mounting base (1) is provided with an upward-facing recessed cavity, which is sealed by an end cap (2), which is fixed to the opening of the recessed cavity by bolts or buckles.

4. The steam generating apparatus according to claim 1, characterized in that, The heating device (4) is spiral in shape. The steam generating water pipe (3) and the heating device (4) are respectively matched and installed through corresponding spiral channels (13) set on the mounting base (1). The axes of the two spiral channels (13) coincide.

5. The steam generating apparatus according to claim 4, characterized in that, The heating device (4) extends to the bottom region of the vapor-liquid separation chamber (11) and is used to perform secondary heating and vaporization of the liquid water in the vapor-liquid separation chamber (11).

6. The steam generating apparatus according to claim 4, characterized in that, The mounting base (1) is made of thermally conductive material, and the steam generating water pipe (3) and heating device (4) are in close contact with the wall of the corresponding spiral channel (13) so that heat is conducted through the mounting base (1) to the vapor-liquid separation chamber (11).

7. The steam generating apparatus according to claim 1, characterized in that, The outlet direction of the outlet end (31) is perpendicular to the steam flow path of the labyrinth passage.

8. The steam generating apparatus according to claim 1, characterized in that, A one-way valve is installed at the steam outlet (12) to prevent steam from flowing back into the vapor-liquid separation chamber (11).

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