An electrothermal film vapor generator

Abstract

The application relates to an electric heating film steam generator, which comprises a metal shell, a heat-conducting plate arranged at the bottom of the metal shell and an electric heating film arranged at the bottom of the heat-conducting plate; the metal shell is provided with a heating cavity, the metal shell is provided with oppositely arranged long side walls and short side walls, and the cavity height of the heating cavity gradually increases along the direction close to the long side walls; the short side walls are provided with water inlet joints for water input into the heating cavity, and the long side walls are provided with steam outlet joints for steam output in the heating cavity. The application has the effect of improving the problem that liquid water is easily carried out when water vapor is flushed out from the steam outlet joint.

Description

Technical Field

[0001] This application relates to the field of electrothermal film heating technology, and in particular to an electrothermal film steam generator. Background Technology

[0002] An electric heating film steam generator is a device that uses electric heating film technology to quickly heat water and convert it into steam. It is characterized by high efficiency, energy saving, and small size, and is now widely used in household, medical, and industrial fields.

[0003] In related technologies, electric heating film steam generators typically include a metal casing and an electric heating film. The metal casing comprises a hollow aluminum profile body, a water inlet connector installed at one end of the aluminum profile body, and a steam outlet connector installed at the other end of the aluminum profile body. The aluminum profile body has a medium channel arranged parallel to the aluminum profile body for the flow of the medium. During operation, liquid water enters the medium channel through the water inlet connector and vaporizes under the heating of the electric heating film. The resulting steam is then rapidly ejected from the steam outlet connector under pressure.

[0004] Regarding the aforementioned technologies, the inventors believe that when water vapor rushes out from the steam outlet, the pressure inside the medium channel is relatively high, resulting in a faster output speed of the water vapor, which easily carries away the liquid water inside the medium channel. Utility Model Content

[0005] In order to improve the problem that water vapor easily carries liquid water when it rushes out from the steam outlet, this application provides an electric heating film steam generator.

[0006] The electric heating film steam generator provided in this application adopts the following technical solution:

[0007] An electric heating film steam generator includes a metal housing, a heat-conducting plate disposed at the bottom of the metal housing, and an electric heating film disposed at the bottom of the heat-conducting plate; the metal housing has a heating cavity, the metal housing has a long sidewall and a short sidewall disposed opposite to each other, and the cavity height of the heating cavity gradually increases along the direction close to the long sidewall; the short sidewall is equipped with a water inlet connector for supplying water into the heating cavity, and the long sidewall is equipped with a steam outlet connector for supplying steam from the heating cavity.

[0008] By adopting the above technical solution, when the electric heating film steam generator is running, liquid water enters the heating chamber through the water inlet and vaporizes under the heating of the electric heating film. The water vapor formed by vaporization will be discharged from the steam outlet under pressure. Since the water inlet is installed on the short side wall for water supply and the steam outlet is installed on the long side wall for steam output, and the height of the heating chamber gradually increases along the direction close to the long side wall, it helps the steam to flow in the heating chamber, thereby improving the problem that water vapor easily carries liquid water when it rushes out from the steam outlet.

[0009] Optionally, the axial height of the water inlet connector is lower than the axial height of the steam outlet connector.

[0010] By adopting the above technical solution, the water inlet connector is installed on the short side wall for water supply, and the steam outlet connector is installed on the long side wall for steam output. The axial height of the water inlet connector is lower than that of the steam outlet connector, which allows water to enter the heating chamber better and be fully heated and converted into steam in the chamber before being output from the high steam outlet connector. This helps to further improve the problem that water vapor easily carries liquid water when it rushes out of the steam outlet connector.

[0011] Optionally, the water inlet connector is arranged on the front side of the short sidewall, and the steam outlet connector is arranged on the rear side of the long sidewall.

[0012] By adopting the above technical solution, the water inlet and steam outlet are staggered on both sides of the heating chamber, making the flow path of liquid water in the heating chamber longer and more reasonable, increasing the heating time and heating area of ​​water, which helps to improve the vaporization efficiency of liquid water and the quality of steam.

[0013] Optionally, the horizontal distance between the axis of the water inlet connector and the axis of the steam outlet connector is 15mm to 25mm.

[0014] By adopting the above technical solution, maintaining a horizontal distance of 15mm to 25mm between the water inlet connector and the steam outlet connector axis helps to reduce the risk of water inlet directly affecting steam outlet and ensures stable steam output.

[0015] Optionally, the axis of the water inlet connector and the axis of the steam outlet connector are on the same vertical plane.

[0016] By adopting the above technical solution, the axis of the water inlet connector and the axis of the steam outlet connector are in the same vertical plane, which makes the water flow path in the heating chamber more regular and orderly, which is conducive to improving the heating efficiency of water and the stability of steam generation.

[0017] Optionally, the metal housing includes an upwardly opening main housing and an upper cover plate for covering the main housing; the main housing is provided with an arrangement groove for arranging the upper cover plate at the upper opening of the heating chamber, and the upper cover plate is welded into the arrangement groove.

[0018] By adopting the above technical solution, the upper cover plate is welded into the arrangement groove, realizing the sealed assembly of the metal shell and the upper cover plate, which helps to improve the sealing performance of the heating chamber and reduce the risk of steam leakage, and helps to improve the working efficiency and safety of the steam generator.

[0019] Optionally, the angle between the upper cover plate and the bottom of the heating chamber is 10° to 20°.

[0020] By adopting the above technical solution, the angle between the upper cover plate and the bottom of the heating chamber is 10° to 20°, which can optimize the internal space structure. This allows steam to flow better in the heating chamber while reducing the probability of steam condensing when it comes into contact with the upper cover plate, thus helping to improve the efficiency and quality of steam generation.

[0021] Optionally, the angle between the upper cover plate and the bottom of the heating chamber is 15°.

[0022] By adopting the above technical solution, a 15° angle is formed between the top cover plate and the bottom of the heating chamber, which helps to optimize the steam flow path and reduce the residence time of steam in the heating chamber, thereby helping to improve steam output efficiency.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. An electric heating film steam generator, comprising a metal shell, a heat-conducting plate, and an electric heating film; during operation, liquid water enters the heating chamber through the water inlet and vaporizes under the heating of the electric heating film, and the vaporized water vapor is discharged from the steam outlet under pressure; since the height of the heating chamber gradually increases along the direction close to the long sidewall, it facilitates the flow of steam in the heating chamber and improves the problem that water vapor easily carries liquid water when it rushes out from the steam outlet;

[0025] 2. By setting the axis height of the water inlet connector to be lower than that of the steam outlet connector, water can better enter the heating chamber and be fully heated and converted into steam before being output from the higher steam outlet connector. This helps to further improve the problem that water vapor easily carries liquid water when it rushes out of the steam outlet connector.

[0026] 3. By staggering the water inlet and steam outlet connectors on both sides of the heating chamber, the liquid water flows through the heating chamber in a longer and more rational manner, increasing the heating time and heating area of ​​the water, which helps to improve the vaporization efficiency of liquid water and the quality of steam. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the electric heating film steam generator in Example 1.

[0028] Figure 2 This is a top view of the electric heating film steam generator in Example 1.

[0029] Figure 3 This is a schematic diagram of the interaction between the heating film and the heat-conducting plate in Example 1.

[0030] Figure 4 This is a top view of the electric heating film steam generator in Example 2.

[0031] Explanation of reference numerals in the attached drawings: 1. Metal casing; 11. Main casing; 111. Arrangement groove; 112. Long side wall; 113. Short side wall; 12. Top cover plate; 13. Heating chamber; 14. Water inlet connector; 15. Steam outlet connector; 2. Heat-conducting plate; 3. Electric heating film; 31. Heating plane. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] Example 1:

[0034] This application discloses an electrothermal film steam generator. (Refer to...) Figure 1 The electric heating film steam generator includes a metal shell 1, a heat-conducting plate 2 disposed at the bottom of the metal shell 1, and an electric heating film 3 disposed at the bottom of the heat-conducting plate 2. The metal shell 1 includes an upward-opening main shell 11 and an upper cover plate 12 for covering the main shell 11. The main shell 11 has an arrangement groove 111 at the upper opening for accommodating the upper cover plate 12. The design of the arrangement groove 111 allows the cover plate to be accurately installed on the main shell 11. The cover plate is fixed in the arrangement groove 111 by welding. Welding ensures good sealing and prevents steam leakage.

[0035] Reference Figure 1 A heating chamber 13 is formed between the main shell 11 and the upper cover plate 12. The metal shell 1 has a long sidewall 112 and a short sidewall 113 arranged opposite to each other. The height of the heating chamber 13 gradually increases along the direction close to the long sidewall 112. This structural design provides ample storage space for the steam generated by vaporization. The cross-section of the heating chamber 13 is a right trapezoid, and the angle formed between the cover plate and the bottom of the heating chamber 13 is 10° to 20°. This tilt angle helps the steam to gather and be discharged better, while also reducing the probability that the steam will condense upon contact with the upper cover plate 12 due to excessive height difference. In this embodiment, the angle formed between the cover plate and the bottom of the heating chamber 13 is 15°.

[0036] Reference Figure 1 and Figure 2A water inlet connector 14 for introducing water into the heating chamber 13 is installed on the front side of the short sidewall 113, and a steam outlet connector 15 for outputting steam generated in the heating chamber 13 is installed on the rear side of the long sidewall 112. The axial height of the water inlet connector 14 is lower than the axial height of the steam outlet connector 15. The horizontal distance between the axis of the water inlet connector 14 and the axis of the steam outlet connector 15 is 15mm to 25mm. This positional design allows sufficient time and space for the water entering the heating chamber 13 to be heated into steam. The water inlet connector 14 is fixed to the short sidewall 113, and the steam outlet connector 15 is fixed to the long sidewall 112 by welding to ensure a strong and airtight connection. Both the water inlet connector 14 and the steam outlet connector 15 are tubular in shape. In this embodiment, the horizontal distance between the axis of the water inlet connector 14 and the axis of the steam outlet connector 15 is 20mm.

[0037] Reference Figure 3 The heat-conducting plate 2 is welded to the bottom surface of the metal shell 1. Welding ensures close contact between the heat-conducting plate 2 and the metal shell 1, improving the efficiency of heat transfer. The heat-conducting plate 2 is made of stainless steel with good thermal conductivity and a relatively flat surface, which allows it to adhere well to the heating film 3 while enabling rapid heat transfer.

[0038] Reference Figure 3 The electric heating film 3 has a heating plane 31. The size of the heating plane 31 is consistent with the size of the bottom of the heating cavity 13 and is arranged in close contact with the bottom of the heat-conducting plate 2. This helps the heat-conducting plate 2 to heat the bottom of the heating cavity 13 evenly and improve the efficiency of steam generation.

[0039] The implementation principle of an electric heating film steam generator according to an embodiment of this application is as follows: When the electric heating film steam generator is running, liquid water enters the heating chamber 13 through the water inlet connector 14 and is vaporized under the heating of the electric heating film 3. The water vapor formed by vaporization is discharged from the steam outlet connector 15 under pressure. The reasonable position and height design of the water inlet connector 14 and the steam outlet connector 15 make the water inflow and steam outflow smoother, which helps the steam to flow in the heating chamber 13, thereby improving the problem that water vapor easily carries liquid water when it rushes out from the steam outlet connector 15.

[0040] Example 2:

[0041] Except for the relative positions of the water inlet connector 14 and the steam outlet connector 15, the structure of this embodiment is the same as that of the electric heating film steam generator in Embodiment 1.

[0042] Reference Figure 4A water inlet connector 14 for introducing water into the heating chamber 13 is installed in the middle of the short sidewall 113, and a steam outlet connector 15 for outputting steam generated in the heating chamber 13 is installed in the middle of the long sidewall 112. The axial height of the water inlet connector 14 is lower than the axial height of the steam outlet connector 15. The axes of the water inlet connector 14 and the steam outlet connector 15 are on the same vertical plane. The water inlet connector 14 is fixed to the short sidewall 113, and the steam outlet connector 15 is fixed to the long sidewall 112 by welding to ensure the connection is firm and airtight. Both the water inlet connector 14 and the steam outlet connector 15 are tubular in shape.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric heating film steam generator, characterized in that, The device includes a metal casing (1), a heat-conducting plate (2) disposed at the bottom of the metal casing (1), and an electric heating film (3) disposed at the bottom of the heat-conducting plate (2); the metal casing (1) has a heating cavity (13), the metal casing (1) has a long sidewall (112) and a short sidewall (113) arranged opposite to each other, the cavity height of the heating cavity (13) gradually increases along the direction close to the long sidewall (112); the short sidewall (113) is equipped with a water inlet connector (14) for supplying water into the heating cavity (13), and the long sidewall (112) is equipped with a steam outlet connector (15) for supplying steam into the heating cavity (13).

2. The electric heating film steam generator according to claim 1, characterized in that, The axial height of the water inlet connector (14) is lower than the axial height of the steam outlet connector (15).

3. The electric heating film steam generator according to claim 2, characterized in that, The water inlet connector (14) is located on the front side of the short sidewall (113), and the steam outlet connector (15) is located on the rear side of the long sidewall (112).

4. The electric heating film steam generator according to claim 3, characterized in that, The horizontal distance between the axis of the water inlet connector (14) and the axis of the steam outlet connector (15) is 15mm to 25mm.

5. An electrothermal film steam generator according to claim 2, characterized in that, The axis of the water inlet connector (14) and the axis of the steam outlet connector (15) are on the same vertical plane.

6. An electrothermal film steam generator according to claim 1, characterized in that, The metal housing (1) includes an upward-opening main housing (11) and an upper cover plate (12) for covering the main housing (11); the main housing (11) is provided with an arrangement groove (111) for arranging the upper cover plate (12) at the upper opening of the heating chamber (13), and the upper cover plate (12) is welded into the arrangement groove (111).

7. An electrothermal film steam generator according to claim 6, characterized in that, The angle between the upper cover plate (12) and the bottom of the heating chamber (13) is 10° to 20°.

8. An electrothermal film steam generator according to claim 7, characterized in that, The angle between the top cover plate (12) and the bottom of the heating chamber (13) is 15°.

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