A household miniature steam boiler with anti-dry-burning protection

Abstract

This utility model discloses a household miniature steam boiler with anti-dry-burning protection, including a base, a pot body, and an electrical control board. The top of the base is fixedly connected to the bottom of the pot body, and the electrical control board is fixedly installed inside the base. A domed protrusion is located at the center of the bottom inside the pot body, and a vortex-shaped heating element is located on the bottom surface of the pot body. The vortex-shaped heating element is electrically connected to the electrical control board via a wire. This utility model, upon reaching the set value of an NTC thermistor sensor, receives a signal from the NTC thermistor sensor and automatically cuts off the power to the vortex-shaped heating element to stop heating. At this time, some moisture remains inside the pot body, preventing large-scale dry-burning. Therefore, the device provides anti-dry-burning protection while simultaneously protecting the pot, extending its service life and providing better protection.

Description

Technical Field

[0001] This utility model relates to the field of steam boiler technology, and more specifically, to a household miniature steam boiler with anti-dry-burning protection. Background Technology

[0002] A household electric steamer is a kitchen appliance that uses electric heating to generate steam for cooking food. It is mainly used for steaming rice, noodles, seafood, vegetables, and other ingredients. Its core feature is that it uses high-temperature steam to heat food evenly, preserving its nutrients and original flavor. It is easy to operate and suitable for healthy eating needs.

[0003] Most mainstream household electric steamers nowadays have an anti-dry-burning function. The principle is generally to use a thermistor to monitor the temperature. When the temperature exceeds the set value, the power is automatically cut off to avoid damage. However, in the existing conventional settings, the sensor is usually installed at the bottom of the pot, and the bottom of the inner side of the pot is flat. The set temperature of the sensor can only be reached after the water has boiled dry. This means that even if there is little water left in the pot, it will continue to dry-burn for a period of time, which will damage the pot itself and reduce its service life. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a household micro steam boiler with anti-dry burning protection to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] A household miniature steam boiler with anti-dry-burning protection includes a base, a pot body, and an electrical control board. The top of the base is fixedly connected to the bottom of the pot body, and the electrical control board is fixedly installed inside the base. A dome-shaped protrusion is provided at the center of the bottom inside the pot body. A vortex-shaped heating element is provided on the bottom surface of the pot body. The vortex-shaped heating element is electrically connected to the electrical control board through a wire. A touch panel is provided on the outside of the pot body for controlling the electrical control board to set the heating temperature. An isolation cylinder is provided on the outside of the top of the dome-shaped protrusion, and an NTC thermistor sensor electrically connected to the electrical control board is provided inside the dome-shaped protrusion.

[0007] As a further description of the above technical solution: the isolation cylinder is located at half the height of the mound-shaped protrusion, and is used to isolate the tip area of ​​the mound-shaped protrusion from the outside.

[0008] As a further description of the above technical solution: the bottom of the base is fixedly connected to the bottom cover by bolts, and the electronic control board is fixedly installed on the bottom cover.

[0009] As a further description of the above technical solution: the outer side of the pot body is provided with a heat insulation protective layer, and the touch panel is installed on the outer side of the heat insulation protective layer.

[0010] As a further description of the above technical solution: the top port of the pot body is provided with a concave slot for installing the steamer.

[0011] As a further description of the above technical solution: a heat insulation plate is fixedly connected inside the base, and the heat insulation plate is located between the vortex-shaped electric heating tube and the electric control board.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] This solution achieves the advantages of providing both anti-dry-burning function and simultaneous protection of the pot by setting an integrated dome-shaped protrusion higher than the bottom plane of the pot inside the pot body, in conjunction with an NTC thermistor sensor, thus extending the pot's service life and providing better protection. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front sectional view of the present invention;

[0016] Figure 3 for Figure 2 Enlarged schematic diagram of section A in the middle;

[0017] Figure 4 This is a top view of the structure of this utility model.

[0018] Explanation of the labels in the diagram:

[0019] 1. Base; 2. Pot body; 3. Control board; 4. Dome-shaped protrusion; 5. Swirl-shaped heating element; 6. Touch panel; 7. Isolation cylinder; 8. NTC thermistor sensor; 9. Bottom cover; 10. Heat insulation layer; 11. Recessed slot; 12. Heat insulation plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0021] Please see Figure 1-4In this utility model, a household miniature steam boiler with anti-dry-burning protection includes a base 1, a pot body 2, and an electric control board 3. The top of the base 1 is fixedly connected to the bottom of the pot body 2. The electric control board 3 is fixedly installed inside the base 1. A dome-shaped protrusion 4 is provided at the center of the bottom of the inner side of the pot body 2. A vortex-shaped electric heating tube 5 is provided on the bottom surface of the pot body 2. The vortex-shaped electric heating tube 5 is electrically connected to the electric control board 3 through a wire. A touch panel 6 is provided on the outer side of the pot body 2 for controlling the electric control board 3 to set the heating. An isolation cylinder 7 is provided on the outer side of the top of the dome-shaped protrusion 4. An NTC thermistor sensor 8, which is electrically connected to the electric control board 3, is provided inside the dome-shaped protrusion 4.

[0022] In this invention, the base 1 supports the pot body 2 to form a whole. During use, first add an appropriate amount of water to the pot body 2, ensuring the water level is higher than the domed protrusion 4. Then, connect the steamer basket containing food to the top of the pot body 2. Use the touch panel 6 to start steam heating. As the water inside is consumed, the liquid level gradually rises above the tip of the domed protrusion 4. As the water evaporates, the liquid level gradually decreases until the tip of the domed protrusion 4 emerges from the water surface. After the surface water of the domed protrusion 4 evaporates, its temperature rises rapidly, exceeding that of other surfaces of the pot body 2 that are in direct contact with the water. At this point, when the temperature reaches the set value of the NTC thermistor sensor 8... Afterwards, the control board 3 receives the signal from the NTC thermistor sensor 8 and automatically cuts off the power to the vortex heating tube 5 to stop heating. At this time, some moisture remains inside the pot body 2, preventing large-area dry burning. This achieves the advantages of the device having anti-dry burning function while simultaneously protecting the pot, extending the pot's service life, and providing better protection. It solves the problem in the existing technology where the sensor is generally installed at the bottom of the pot, and the bottom of the inner side of the pot is flat. The sensor's set temperature is generally only reached after the water has boiled away. This causes the pot to continue to dry-burn for a period of time even when the water has almost evaporated, damaging the pot itself and reducing its service life.

[0023] Please see Figure 2 and Figure 3 The isolation cylinder 7 is located at half the height of the mound-shaped protrusion 4 and is used to isolate the tip area of ​​the mound-shaped protrusion 4 from the outside.

[0024] In this invention, the isolation cylinder 7 separates the water outside the tip area of ​​the dome-shaped protrusion 4. When the water level drops, the boiling water reduces the temperature influence on the tip of the dome-shaped protrusion 4, ensuring that the NTC thermistor sensor 8 detects accurately and responds promptly.

[0025] Please see Figure 2 The base 1 is fixedly connected to the bottom cover 9 by bolts, and the control board 3 is fixedly installed on the bottom cover 9.

[0026] In this utility model, the bottom cover 9 facilitates the disassembly of the electronic control board 3, making subsequent maintenance and operation more convenient.

[0027] Please see Figure 1 and Figure 2 The outer side of the pot body 2 is provided with a heat insulation protective layer 10, and the touch panel 6 is installed on the outer side of the heat insulation protective layer 10. The heat insulation protective layer 10 improves the heat preservation performance of the pot body 2 while protecting the user and preventing burns caused by accidental touch due to excessive heat of the pot body 2.

[0028] Please see Figure 1 and Figure 2 The top port of the pot body 2 is provided with a concave groove 11 for installing the steamer; the concave groove 11 facilitates the stable docking and placement of the steamer.

[0029] Please see Figure 2 The base 1 has a heat insulation plate 12 fixedly connected inside, which is located between the vortex heating tube 5 and the control board 3. The heat insulation plate 12 isolates the vortex heating tube 5 from the control board 3 at the bottom, reducing the high temperature impact on the control board 3 and improving the service life of the control board 3.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A household miniature steam boiler with anti-dry-burning protection, comprising a base (1), a boiler body (2), and an electrical control board (3), wherein the top of the base (1) is fixedly connected to the bottom of the boiler body (2), and the electrical control board (3) is fixedly installed inside the base (1), characterized in that: The bottom center of the inner side of the pot body (2) is provided with a mound-shaped protrusion (4). The bottom surface of the pot body (2) is provided with a vortex-shaped electric heating tube (5). The vortex-shaped electric heating tube (5) is electrically connected to the electric control board (3) through a wire. The outer side of the pot body (2) is provided with a touch panel (6) for controlling the electric control board (3) to set the heating. The outer side of the top of the mound-shaped protrusion (4) is provided with an isolation cylinder (7). The inside of the mound-shaped protrusion (4) is provided with an NTC thermistor sensor (8) electrically connected to the electric control board (3).

2. A household miniature steam boiler with anti-dry-burning protection according to claim 1, characterized in that: The isolation cylinder (7) is located at half the height of the mound-shaped protrusion (4) and is used to isolate the tip area of ​​the mound-shaped protrusion (4) from the outside.

3. A household miniature steam boiler with anti-dry-burning protection according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected to the bottom cover (9) by bolts, and the electrical control board (3) is fixedly installed on the bottom cover (9).

4. A household miniature steam boiler with anti-dry-burning protection according to claim 1, characterized in that: The outer side of the pot body (2) is provided with a heat insulation protective layer (10), and the touch panel (6) is installed on the outer side of the heat insulation protective layer (10).

5. A household miniature steam boiler with anti-dry-burning protection according to claim 1, characterized in that: The top port of the pot body (2) is provided with a recessed slot (11) for installing a steamer.

6. A household miniature steam boiler with anti-dry-burning protection according to claim 1, characterized in that: A heat insulation plate (12) is fixedly connected inside the base (1), and the heat insulation plate (12) is located between the vortex-shaped electric heating tube (5) and the electric control board (3).

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