Heating body capable of directly generating steam

Abstract

The utility model discloses a heating body capable of directly generating steam, which comprises a shell, an electric heating pipe and a water guide pipe spirally wound outside the electric heating pipe are arranged in the shell, the water guide pipe is provided with a water inlet pipe and a water outlet pipe which extend out of the outer side of the shell, and the water outlet pipe and the water inlet pipe are respectively arranged at the upper end and the lower end of the shell. The inner diameter of the water guide pipe ranges from 3 mm to 8 mm, and the length of the water guide pipe ranges from 1.5 m to 3.0 m. By reasonably setting the inner diameter and the length of the water guide pipe, the electric heating pipe can achieve the optimal heating state of water in the water guide pipe, water flowing out of the water outlet pipe can directly form steam, and therefore the heating body can be used for equipment needing hot water such as a water heater, a tea making machine and a coffee machine and also can be used for heating water. The device can also be used for steam engines, steamers and other devices needing steam; meanwhile, by adopting a water-electricity separation heating mode, the heating body is safer to use, more convenient to clean, not prone to generating scale and longer in service life.

Description

Technical Field

[0001] The utility model relates to the field of electric water heaters, in particular to a heating element that can directly generate steam. Background Art

[0002] The heating element of a traditional electric water heater is mostly composed of an electric heating tube and a water container. When in use, the electric heating tube is directly placed in the water in the water container to heat it. Heat is exchanged between the surface of the electric heating tube and the water, thereby heating the water. The disadvantage of this structure is that the heating tube is easily scaled during use, which can lead to a decrease in thermal conductivity after long-term use, and may even cause the electric heating tube to rupture. There is also a safety hazard of leakage. For this reason, a spiral-shaped water container with a hollow inner cavity formed by winding a pipe has been developed. When in use, the electric heating tube is bent into a U shape and embedded in the hollow inner cavity, thereby heating the water in the pipe through the electric heating tube. Although this structure can avoid the phenomenon of scale adhering to the electric heating tube, it still has low heating efficiency in actual use. It is difficult to heat the water in the pipe directly to form steam, resulting in a limited application range of the heating element. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provides a heating element that can directly generate steam, thereby improving the heating efficiency of the heating element, allowing water to be heated to directly generate steam, and increasing the application range of the heating element.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A heating element that can directly generate steam comprises a shell, wherein an electric heating tube and a water pipe spirally wound around the electric heating tube are provided in the shell, the water pipe is provided with a water inlet pipe and a water outlet pipe extending out of the shell, the water outlet pipe and the water inlet pipe are respectively provided at the upper and lower ends of the shell, the inner diameter of the water pipe is 3 to 8 mm, and the length of the water pipe is 1.5 to 3.0 m. The utility model reasonably sets the inner diameter and length of the water pipe so that the electric heating tube can achieve the best heating state for the water inside the water pipe, so that the water flowing out of the water outlet pipe can directly form steam, thereby making the heating element usable for equipment requiring hot water, such as water heaters, tea makers, coffee machines, and also for equipment requiring steam, such as steam engines and steamers; at the same time, by adopting a water-electricity separation heating method, the heating element is safer to use, easier to clean, less likely to generate scale, and has a longer service life.

[0006] As a preferred technical solution, the wall thickness of the water pipe is 0.5 to 1.0 mm.

[0007] As a preferred technical solution, the water pipe is spirally coiled to form a hollow tube with a cavity, and the electric heating tube is embedded in the cavity in a U shape.

[0008] As an optimal technical solution, there are multiple electric heating tubes, and the multiple electric heating tubes are embedded in sequence, and two adjacent electric heating tubes are tightly connected.

[0009] As a preferred technical solution, the cross-section of the cavity is runway-shaped, the central axes of the multiple electric heating tubes are located in the same plane, and the width of the cavity is adapted to the outer diameter of a single electric heating tube.

[0010] As a preferred technical solution, the inner end of the water inlet pipe is provided with a bending portion extending to the bottom of the cavity.

[0011] As an optimal technical solution, the water guide pipe, water inlet pipe, water outlet pipe and bending portion are integrally formed and connected.

[0012] As an optimal technical solution, the electric heating tube is provided with an electrical connection end extending out of the outer side of the shell, the electrical connection ends of multiple electric heating tubes are flush, and the multiple electric heating tubes are connected in parallel through a conductive sheet.

[0013] As a preferred technical solution, the heating power of the electric heating tube is 1 to 4.4 kW.

[0014] As a preferred technical solution, a mounting foot plate is provided on the shell, and a mounting through hole is provided on the mounting foot plate.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, by reasonably setting the inner diameter and length of the water pipe, the electric heating pipe can achieve the best heating state for the water inside the water pipe, so that the water flowing out of the water outlet pipe can directly form steam, so that the heating element can be used for equipment requiring hot water such as water heaters, tea makers, coffee machines, etc., and can also be used for equipment requiring steam such as steam engines and steamers; at the same time, by adopting a heating method with water and electricity separated, the heating element is safer to use, easier to clean, less likely to produce scale, and has a longer service life.

[0016] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall assembly structure diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a diagram showing the assembly state of the water pipe and the electric heating pipe according to an embodiment of the present utility model;

[0019] Figure 3 This is a bottom view of the water pipe structure of an embodiment of the present utility model;

[0020] Figure 4 This is a structural diagram of an electric heating tube according to an embodiment of the present utility model;

[0021] Description of the accompanying drawings:

[0022] 10. Housing 11. Mounting foot plate 12. Mounting through hole

[0023] 20. Electric heating tube 21. Power terminal 30. Water pipe

[0024] 31. Water inlet pipe 32. Water outlet pipe 33. Bend

[0025] 34. Cavity 40. Conductive sheet. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0028] like Figure 1-4As shown, a heating element that can directly generate steam includes a shell 10, a mounting foot plate 11 is provided on the shell 10, and a mounting through hole 12 is provided on the mounting foot plate 11. An electric heating pipe 20 and a water pipe 30 spirally coiled outside the electric heating pipe 20 are provided in the shell 10, and the water pipe 30 is provided with a water inlet pipe 31 and a water outlet pipe 32 extending outside the shell 10. The water outlet pipe 32 and the water inlet pipe 31 are respectively provided at the upper and lower ends of the shell 10, the wall thickness of the water pipe 30 is 0.5-1.0 mm, the inner diameter of the water pipe 30 is 3-8 mm, the length of the water pipe 30 is 1.5-3.0 m, and the heating power of the electric heating pipe 20 is 1-4.4 kW. Preferably, when the inner diameter of the water conduit 30 is 6 mm, the length of the water conduit 30 is 1.8 m; when the inner diameter of the water conduit 30 is 3 mm, the length of the water conduit 30 is 3 m; and when the inner diameter of the water conduit 30 is 4 mm, the length of the water conduit 30 is 2.2 m. By properly setting the inner diameter and length of the water conduit 30, the water in the water conduit 30 can be heated at an optimal flow rate for an optimal time, allowing the water to be directly heated to form steam that flows out of the water outlet pipe 32.

[0029] Specifically, the water conduit 30 is spirally coiled to form a hollow tube with a cavity 34, and the electric heating tube 20 is embedded in the cavity 34 in a U shape. There are three electric heating tubes 20, and the three electric heating tubes 20 are embedded in sequence, and the two adjacent electric heating tubes 20 are closely connected, so that the overall volume of the electric heating tube 20 is more compact, which is conducive to reducing the volume of the heating element and improving the heating efficiency of the heating element. The cross-section of the cavity 34 is runway-shaped, and the central axes of the three electric heating tubes 20 are located in the same plane. The width of the cavity 34 is adapted to the outer diameter of a single electric heating tube 20, that is, the electric heating tube 20 can be installed in the cavity 34 while maintaining a small gap, thereby improving the heating efficiency. It should be understood that in actual applications, the number of electric heating tubes 20 can be set as needed, and can be one, two or more than three.

[0030] In the present invention, the inner end of the water inlet pipe 31 is provided with a bend 33 that extends to the bottom of the cavity 34. The water conduit 30, the water inlet pipe 31, the water outlet pipe 32, and the bend 33 are integrally formed and connected. The bend 33 allows the lower end of the electric heating tube 20 to contact the bend 33 during assembly, preventing the electric heating tube 20 from falling out of the bottom of the cavity 34, thereby improving assembly convenience.

[0031] In the present invention, the electric heating tube 20 is provided with an electrical connection end 21 extending outward from the shell 10 , the electrical connection ends 21 of the three electric heating tubes 20 are flush, and the multiple electric heating tubes 20 are connected in parallel via a conductive sheet 40 .

[0032] To sum up, the utility model reasonably sets the inner diameter and length of the water pipe 30 so that the electric heating tube 20 can achieve the best heating state for the water inside the water pipe 30, so that the water flowing out of the water outlet pipe 32 can directly form steam, so that the heating element can be used for equipment that requires hot water, such as water heaters, tea makers, coffee machines, etc., and can also be used for equipment that requires steam, such as steam engines, steamers; at the same time, by adopting a water-electricity separation heating method, the heating element is safer to use, easier to clean, less likely to produce scale, and has a longer service life.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical practice of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A heating element capable of directly generating steam, characterized in that: It includes a shell, in which an electric heating pipe and a water pipe spirally coiled outside the electric heating pipe are arranged, the water pipe is provided with a water inlet pipe and a water outlet pipe extending out of the shell, the water outlet pipe and the water inlet pipe are respectively arranged at the upper and lower ends of the shell, the inner diameter of the water pipe is 3 to 8 mm, and the length of the water pipe is 1.5 to 3.0 m.

2. The heating element capable of directly generating steam according to claim 1, characterized in that: The wall thickness of the water conduit is 0.5-1.0 mm.

3. The heating element capable of directly generating steam according to claim 1, characterized in that: The water conduit is spirally wound to form a hollow tube with a cavity, and the electric heating tube is embedded in the cavity in a U shape.

4. The heating element capable of directly generating steam according to claim 3, characterized in that: There are multiple electric heating tubes, and the multiple electric heating tubes are embedded in sequence, and two adjacent electric heating tubes are closely connected.

5. The heating element capable of directly generating steam according to claim 4, characterized in that: The cross section of the cavity is in the shape of a racetrack, the central axes of the multiple electric heating tubes are located in the same plane, and the width of the cavity is adapted to the outer diameter of a single electric heating tube.

6. The heating element capable of directly generating steam according to claim 3, characterized in that: The inner end of the water inlet pipe is provided with a bending portion extending to the bottom of the cavity.

7. The heating element capable of directly generating steam according to claim 6, characterized in that: The water guide pipe, the water inlet pipe, the water outlet pipe and the bending part are integrally formed and connected.

8. The heating element capable of directly generating steam according to claim 4, characterized in that: The electric heating tube is provided with an electrical connection end extending out of the outer side of the shell, the electrical connection ends of the plurality of electric heating tubes are flush, and the plurality of electric heating tubes are connected in parallel via a conductive sheet.

9. The heating element capable of directly generating steam according to claim 1, characterized in that: The heating power of the electric heating tube is 1-4.4Kw.

10. The heating element capable of directly generating steam according to claim 1, characterized in that: The shell is provided with a mounting foot plate, and the mounting foot plate is provided with a mounting through hole.

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