Steam generator based on electric arc heating
The steam generator using electric arc heating technology generates high-temperature heat to quickly heat water and pipes, solving the problems of slow heating speed and energy waste in existing technologies, and achieving rapid and efficient steam generation and energy-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-06
AI Technical Summary
Existing steam generators have slow heating speeds, serious energy waste, difficulty in efficiently producing high-temperature steam, and large size and high cost.
Using electric arc heating technology, high-temperature heat is generated by an electric arc generator and quickly conducted to the water heating pipe through a heat exchanger, enabling immediate use without the need for water storage, fast heating speed, and energy saving.
It achieves rapid generation of high-temperature steam, saving water and electricity, and the equipment is small in size and low in cost.
Smart Images
Figure CN223976011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam generator technology, and in particular to a steam generator based on electric arc heating. Background Technology
[0002] Existing steam generators produce steam by first adding a certain amount of cold water to a heating chamber, then heating the water in the chamber using a heating system. Steam is generated when the water is heated to 100 degrees Celsius or higher. However, the heating system in existing steam generators uses resistance heating technology. Resistance heating has a characteristic that requires a larger cross-section of the resistance wire to prevent it from melting if long-term high-temperature heating is needed. Based on the electrical conductivity of metallic materials, the cross-section of the resistance wire is inversely proportional to its resistance. When the cross-section of the resistance wire increases, the resistance decreases, resulting in a larger current during operation and a proportionally amplified heating power. To control the current, the resistance wire needs to be lengthened, making it difficult to generate high-power heat in a small volume. Therefore, the existing steam generation technology has the following drawbacks: First, because resistance heating slowly heats the water in the heating chamber to 100 degrees Celsius, the steam generation speed is also slow. Second, due to the slow heating speed, a certain amount of water needs to be added to the heating chamber first. If the water in the heating chamber is not used up when steam is generated, the energy used for heating the water will be wasted. Third, most scenarios require the rapid generation of high-temperature steam, but the existing resistance heating technology is not efficient in generating high-temperature steam. If a large or multi-stage heating system is used to form a high-power heating device, the cost will be too high and the size will be too large.
[0003] In conclusion, the existing structure obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a steam generator based on electric arc heating. The electric arc can instantly generate temperatures above 1000 degrees Celsius, resulting in rapid heating. Furthermore, it eliminates the need for extensive water storage before heating, allowing for immediate use of external water sources and saving both water and electricity.
[0005] To achieve the above objectives, this utility model provides a steam generator based on electric arc heating, comprising:
[0006] At least one arc generator,
[0007] A heat exchanger has the electric arc generator arranged laterally and a set of water heating pipes arranged longitudinally; and the set of water heating pipes is arranged around the head end of the electric arc generator.
[0008] The water inlet pipe has one end connected to an external water source and the other end connected to the water inlet of the set of water heating pipes.
[0009] The steam outlet pipe has one end connected to the steam outlet of the set of water heating pipes, and the other end discharges the steam generated by the electric arc generator heating the water in the set of water heating pipes.
[0010] According to the aforementioned electric arc-based steam generator, the set of water heating pipes includes multiple parallel water heating pipes and multiple guide pipes;
[0011] Each of the guide pipes is connected to the head or tail of two adjacent water heating pipes; wherein, the head of the water heating pipe not connected to the guide pipe is the water inlet, and the tail of the water heating pipe not connected to the guide pipe is the steam outlet.
[0012] According to the aforementioned arc-heated steam generator, the guide pipe is curved and has two ends; the set of water heating pipes includes three parallel water heating pipes and two guide pipes; the plurality of water heating pipes are respectively a first water heating pipe, a second water heating pipe and a third water heating pipe; the two guide pipes are respectively a first guide pipe and a second guide pipe.
[0013] The first ends of both the third and second water heating pipes are connected to the first guide pipe, and the tail ends of both the second and first water heating pipes are connected to the second guide pipe; the tail end of the third water heating pipe is the steam outlet end, and the first end of the first water heating pipe is the water inlet end.
[0014] According to the aforementioned electric arc-based steam generator, the heat exchanger has a mounting hole at one end in the transverse direction; the electric arc generator is installed in the mounting hole; and the water heating pipe runs longitudinally through the heat exchanger.
[0015] According to the described arc-heated steam generator, the mounting hole is a blind hole;
[0016] The heat exchanger is prismatic in shape; the outer peripheral wall of the heat exchanger is covered with a matching heat insulation layer.
[0017] According to the aforementioned steam generator based on electric arc heating, both the mounting holes and the electric arc generators include multiple mounting holes, which are arranged at predetermined distances on one end face of the heat exchanger in the transverse direction; the multiple electric arc generators are respectively installed in the multiple mounting holes.
[0018] According to the aforementioned arc-based steam generator, the arc generator includes a cathode and an anode;
[0019] The cathode is disposed at the bottom of the mounting hole, and the cathode is electrically connected to the heat exchanger.
[0020] The anode is disposed in the mounting hole through an insulating heat-conducting tube and is located above the cathode; the interior of the insulating heat-conducting tube is a hollow pipe, and a boss is provided on the lower part of the hollow pipe protruding inward; the anode is disposed in the hollow pipe, and the edge of the bottom end of the anode abuts against the boss; the top end of the anode is electrically connected to the conductive column, and the outer peripheral wall of the conductive column is wrapped with an insulating heat-insulating tube.
[0021] According to the described electric arc-based steam generator, the heat exchanger is made of a metallic material; the anode is made of a tungsten alloy material; the cathode is made of a tungsten alloy material; the insulating heat-conducting pipe is a magnesium oxide pipe; the insulating heat-insulating pipe is an aluminum oxide pipe; the top end of the cathode protrudes towards the anode to form a cone shape; the bottom end of the anode protrudes towards the cathode to form a cone shape.
[0022] The steam generator based on electric arc heating further includes a power supply component electrically connected to the electric arc generator; the power supply component includes:
[0023] A circuit board, wherein an anode current circuit and a cathode current circuit are provided on the circuit board;
[0024] An anode wire, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to the shunt circuit board;
[0025] The shunt circuit board is electrically connected to the conductive pillar;
[0026] The cathode wire has one end electrically connected to the cathode current circuit and the other end electrically connected to the heat exchanger.
[0027] The steam generator based on electric arc heating also includes a housing body, which includes a front shell and a bottom shell, forming a device cavity between the front shell and the bottom shell, and the heat exchanger is installed inside the device cavity.
[0028] This utility model discloses a steam generator based on electric arc heating, comprising at least one electric arc generator, a heat exchanger, a water inlet pipe, and a steam outlet pipe. Specifically, the heat exchanger is used to conduct the heat generated by the electric arc generator to the water heating pipes inside it. The electric arc generator is arranged laterally on the heat exchanger, and a set of water heating pipes is arranged longitudinally around the head end of the electric arc generator. One end of the water inlet pipe is connected to an external water source, and the other end is connected to the water inlet end of the set of water heating pipes. One end of the steam outlet pipe is connected to the steam outlet end of the set of water heating pipes, and the other end discharges the steam generated by the electric arc generator heating the water in the set of water heating pipes. Since the electric arc generator can instantly generate a high temperature of over 1000 degrees Celsius and conduct it to the water heating pipes through the heat exchanger, the water heating pipes can be quickly heated to over 300 degrees Celsius. At this time, the external water source enters the water heating pipes through the water inlet pipe and quickly forms steam which is discharged through the steam outlet pipe. There is no need to store water in the water heating pipes. When enough steam is generated, the water inlet pipe can be closed, thus saving energy. Attached Figure Description
[0029] Figure 1 This is an exploded structural diagram of a steam generator provided in one embodiment of the present invention;
[0030] Figure 2 This is a three-dimensional structural schematic diagram of a steam generator provided in an embodiment of the present invention;
[0031] Figure 3 This is a cross-sectional view of a steam generator provided in an embodiment of the present invention;
[0032] Figure 4 This is a three-dimensional structural schematic diagram of an arc generator provided in an embodiment of the present invention;
[0033] Figure 5 This is an exploded structural diagram of an arc generator provided in one embodiment of the present invention;
[0034] Figure 6 This is a three-dimensional structural diagram of a steam generator with an outer shell body provided in an embodiment of the present invention;
[0035] Figure 7 This is an exploded structural diagram of a steam generator comprising a housing and a power supply assembly, according to an embodiment of the present invention. Detailed Implementation
[0036] 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 accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0038] See Figures 1 to 7 In one embodiment of this utility model, a steam generator 100 based on electric arc heating is provided, comprising:
[0039] At least one arc generator 10,
[0040] The heat exchanger 20 has an arc generator 10 arranged in the transverse direction and a set of water heating pipes arranged in the longitudinal direction; and the set of water heating pipes is arranged around the head end of the arc generator 10.
[0041] The water inlet pipe 30 has one end connected to an external water source and the other end connected to the water inlet 211 of a set of water heating pipes.
[0042] The steam outlet pipe 40 has one end connected to the steam outlet 231 of a set of water heating pipes, and the other end discharges the steam generated by the electric arc generator 10 heating the water in the set of water heating pipes.
[0043] In this embodiment, the steam generator 100 generates heat based on an electric arc. Since the electric arc can instantly generate high temperatures, the heat is rapidly conducted to the water heating pipe through the heat exchanger 20. The water heating pipe can be formed by channels opened in the heat exchanger 20. The heat generated by the electric arc generator 10 is conducted to the heat exchanger 20, causing the water heating pipe to rapidly heat up to over 300 degrees Celsius. When external water enters the water heating pipe through the inlet pipe 30, the external water comes into contact with the high-temperature water heating pipe and quickly generates steam. The steam is discharged through the outlet pipe 40. Specifically, the electric arc generator 10 is used to generate an electric arc, which is generated at the head end of the electric arc generator 10, and the head end of the electric arc generator 10 directly contacts the heat exchanger 20. At least one arc generator 10 is disposed at one end of the heat exchanger 20 in the transverse direction. When multiple arc generators 10 are provided, they are arranged sequentially at a certain distance along the longitudinal direction and are all disposed at the same end of the heat exchanger 20 in the transverse direction. For example, when the heat exchanger 20 is prismatic, one side of the prism is used as the same end of the heat exchanger 20 in the transverse direction, and multiple arc generators 10 are evenly distributed along the longitudinal direction on one side of the prism (see...). Figure 1 Furthermore, each water heating pipe in the group is arranged longitudinally along the heat exchanger 20, ensuring uniform heating and rapid temperature rise. Optionally, the heat exchanger 20 is prismatic to facilitate the arrangement of the arc generator 10 and the water heating pipes. Optionally, each water heating pipe is located on the outer periphery of the head end of the arc generator 10, and the distance between each water heating pipe and the head end of the arc generator 10 is equal, ensuring that each water heating pipe not only heats up quickly but also at the same rate, avoiding the impact on steam generation due to the slower heating rate of one or more water heating pipes. The water inlet pipe 30 is connected to an external water source. The water inlet pipe 30 is opened only when the water heating pipe reaches the preset temperature, without the need to store water in the water heating pipe. When sufficient steam is generated, the water inlet pipe 30 is closed, and the steam generator 100 stops working, avoiding energy waste.
[0044] As an optional embodiment, see Figures 1-3 A set of water heating pipes includes multiple parallel water heating pipes and multiple guide pipes;
[0045] Each guide pipe connects to the head or tail end of two adjacent water heating pipes; the head end of the water heating pipe without a guide pipe is the water inlet 211, and the tail end of the water heating pipe without a guide pipe is the steam outlet 231.
[0046] In this embodiment, multiple water heating pipes are arranged in parallel, and the water heating pipes are connected by guide pipes so that each water heating pipe is connected from the water inlet 211 to the steam outlet 231. Specifically, the guide pipe is curved and has two ends; a set of water heating pipes includes three parallel water heating pipes and two guide pipes; the multiple water heating pipes are a first water heating pipe 21, a second water heating pipe 22, and a third water heating pipe 23; the two guide pipes are a first guide pipe 24 and a second guide pipe 25; the ends of the third water heating pipe 23 and the second water heating pipe 22 are both connected to the first guide pipe 24, and the ends of the second water heating pipe 22 and the first water heating pipe 21 are both connected to the second guide pipe 25; the end of the third water heating pipe 23 is the steam outlet 231, and the end of the first water heating pipe 21 is the water inlet 211.
[0047] As an optional embodiment, see Figures 1-3 The heat exchanger 20 has a mounting hole 26 at one end in the transverse direction. The electric arc generator 10 is installed in the mounting hole 26 to be stably set on the heat exchanger 20. The water heating pipe runs through the heat exchanger 20 in the longitudinal direction. The water heating pipes can be connected to each other through a guide pipe located outside the heat exchanger 20. The guide pipe is welded to the water heating pipe.
[0048] As an optional embodiment, see Figures 1-3 The outer peripheral wall of the heat exchanger 20 is wrapped with a matching heat insulation layer 27, which is used to reduce the heat conduction of the heat exchanger 20 to the outside. This not only prevents the heat loss of the heat exchanger 20, but also protects the external components of the heat exchanger 20.
[0049] As an optional embodiment, see Figure 1 The heat exchanger 20 includes multiple mounting holes 26 and multiple arc generators 10. These mounting holes 26 are spaced at predetermined intervals on the end face of one transverse end of the heat exchanger 20. The mounting holes 26 can optionally be evenly distributed longitudinally to ensure uniform heating of all locations on the water heating pipe when multiple arc generators 10, each mounted in one of the mounting holes 26, simultaneously conduct heat to the longitudinally extending water heating pipe. The simultaneous generation of electric arcs by multiple arc generators 10 can increase the heating rate of the water heating pipe, thereby increasing the steam generation rate.
[0050] As an optional embodiment, see Figures 3-5 The arc generator 10 includes a cathode 11 and an anode 12;
[0051] The mounting hole 26 can be a blind hole, the cathode 11 is disposed at the bottom of the mounting hole 26, and the cathode 11 is electrically connected to the heat exchanger 20;
[0052] The anode 12 is disposed in the mounting hole 26 through the insulating heat-conducting pipe 13 and is located above the cathode 11; the interior of the insulating heat-conducting pipe 13 is a hollow pipe, and a boss 14 is provided on the lower part of the hollow pipe protruding inward; the anode 12 is disposed in the hollow pipe, and the edge of the bottom end of the anode 12 abuts against the boss 14; the top end of the anode 12 is electrically connected to the conductive post 15, and the outer peripheral wall of the conductive post 15 is wrapped with an insulating heat-insulating pipe 16.
[0053] In this embodiment, the cathode 11 is electrically connected to the heat exchanger 20, and the cathode 11 is disposed close to the heat exchanger 20 within the mounting hole 26. Therefore, when multiple cathodes 11 are provided, they can be conveniently energized simultaneously through the heat exchanger 20. The anode 12 is disposed in the mounting hole 26 via an insulated heat-conducting pipe 13, preventing a short circuit between the anode 12 and the cathode 11, and allowing the heat generated by the anode 12 to be conducted to the heat exchanger 20. The boss 14 defines a gap between the anode 12 and the cathode 11, so that an electric arc is generated between the anode 12 and the cathode 11 when a certain voltage difference is formed. The anode 12 is energized through the conductive post 15. To prevent a short circuit between the conductive post 15 and the heat exchanger 20, the outer periphery of the conductive post 15 is wrapped with an insulating tube. Since no heat exchange is required between the conductive post 15 and the heat exchanger 20, the insulating tube is set as an insulating heat-insulating tube 16 with a low thermal conductivity, which is less than that of the insulating heat-conducting tube 13. Specifically, the insulating heat-conducting tube 13 is a magnesium oxide tube, and the insulating heat-insulating tube 16 is an aluminum oxide tube.
[0054] As an optional embodiment, the heat exchanger 20 is made of a metallic material to facilitate heat conduction; the anode 12 is made of a tungsten alloy, and the cathode 11 is also made of a tungsten alloy, with both the anode 12 and cathode 11 possessing high-temperature resistance; the tip of the cathode 11 protrudes towards the anode 12, forming a cone shape (see...). Figure 5 The bottom end of anode 12 protrudes towards cathode 11, forming a cone shape (see...). Figure 5 Because the cone has a pointed tip, it allows for stable discharge between the anode 12 and the cathode 11 to generate an electric arc.
[0055] As an optional embodiment, see Figure 7 The steam generator 100 also includes a power supply assembly electrically connected to the arc generator 10; the power supply assembly includes:
[0056] Circuit board 51, on which an anode current circuit and a cathode current circuit are provided;
[0057] Anode wire 52, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to the shunt circuit board 53;
[0058] The shunt circuit board 53 is electrically connected to the conductive post 15;
[0059] The cathode wire 54 is electrically connected at one end to the cathode current circuit and at the other end to the heat exchanger 20.
[0060] In this embodiment, circuit board 51 is connected to and energized by an external power supply via an external power cord. Current enters circuit board 51, and the anode current generated by the anode current circuit on circuit board 51 is connected to shunt circuit board 53 via anode wire 52. Shunt circuit board 53 can simultaneously supply power to multiple conductive posts 15. Optionally, shunt circuit board 53 is provided with multiple through holes adapted to the conductive posts 15. The conductive posts 15 are installed in the through holes and electrically connected to shunt circuit board 53. The cathode current circuit on circuit board 51 generates a cathode current that is electrically connected to heat exchanger 20 via cathode wire 54.
[0061] As an optional embodiment, see Figures 6-7 The steam generator 100 also includes a housing body 60, which comprises a front shell 61 and a bottom shell 62, forming a device cavity 63 between the front shell 61 and the bottom shell 62. A heat exchanger 20 is installed within the device cavity 63. The housing body 60 protects the heat exchanger 20 housed within it and also protects the user. A water inlet pipe 30 and a steam outlet pipe 40, connected to the heat exchanger 20, can extend from the housing body 60. Alternatively, a power supply component can also be housed within the device cavity 63, and a heat insulation plate can be optionally installed between the power supply component and the heat exchanger 20.
[0062] The working process of the arc-heated steam generator 100 described above is as follows:
[0063] Circuit board 51 is connected to an external power source and powered through an external power cord. Current enters circuit board 51, and the anode current on circuit board 51 reaches anode 12 through anode wire 52, shunt circuit board 53, and conductive post 15. At the same time, the cathode current on circuit board 51 flows from cathode wire 54 and heat exchanger 20 to cathode 11. An electric arc is generated between cathode 11 and anode 12, and the electric arc releases a large amount of heat. Part of the heat is transferred to heat exchanger 20 through cathode 11, and the other part is transferred to heat exchanger 20 through magnesium oxide tube, which quickly raises the temperature of heat exchanger 20 to above 300 degrees Celsius. At this time, the water inlet pipe 30 is opened, and external tap water enters the water heating pipe of heat exchanger 20 through water inlet pipe 30. The water heating pipe is formed by the channels opened inside heat exchanger 20. When tap water comes into contact with the high temperature water heating pipe inside heat exchanger 20, steam is quickly generated. The steam is ejected through steam outlet pipe 40.
[0064] In summary, the electric arc-based steam generator of this invention includes at least one electric arc generator, a heat exchanger, a water inlet pipe, and a steam outlet pipe. Specifically, the heat exchanger is used to conduct the heat generated by the electric arc generator to the water heating pipes. The electric arc generator is arranged horizontally on the heat exchanger, and a set of water heating pipes is arranged vertically around the head end of the electric arc generator. One end of the inlet pipe is connected to an external water source, and the other end is connected to the inlet end of the set of water heating pipes. One end of the outlet pipe is connected to the steam outlet end of the set of water heating pipes, and the other end discharges the steam generated by the electric arc generator heating the water in the set of water heating pipes. Since the electric arc generator can instantly generate a high temperature of over 1000 degrees Celsius and conduct the heat to the water heating pipes through the heat exchanger, the water heating pipes are quickly heated to over 300 degrees Celsius. At this time, the external water source enters the water heating pipes through the inlet pipe and quickly forms steam, which is discharged through the outlet pipe. There is no need to store water in the water heating pipes. When enough steam is generated, the inlet pipe can be closed, thus saving energy.
[0065] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.
Claims
1. An electric arc heat-based steam generator, characterized by, The utility model relates to a water heating device, comprising: at least one arc generator, a heat exchange body, which is provided with the arc generator in the transverse direction and a group of water heating pipes in the longitudinal direction; and the group of water heating pipes is arranged around the head end of the arc generator; a water inlet pipe, one end of which is connected to a water source and the other end of which is connected to the water inlet end of the group of water heating pipes; an air outlet pipe, one end of which is connected to the steam outlet end of the group of water heating pipes and the other end of which is used to discharge the steam generated by heating the water in the group of water heating pipes by the arc generator.
2. The electric-arc heat-based steam generator of claim 1, wherein, The group of water heating pipes comprises a plurality of parallel water heating pipes and a plurality of guide pipes; Each of the guide pipes is connected to the head end or tail end of two adjacent water heating pipes; the head end of the water heating pipe not connected to the guide pipe is the water inlet end, and the tail end of the water heating pipe not connected to the guide pipe is the steam outlet end.
3. The electric-arc heat-based steam generator of claim 2, wherein, The guide pipe is curved and has two head ends; the group of water heating pipes comprises three parallel water heating pipes and two guide pipes; the plurality of water heating pipes are a first water heating pipe, a second water heating pipe and a third water heating pipe; the two guide pipes are a first guide pipe and a second guide pipe; The head end of the third water heating pipe and the second water heating pipe is connected to the first guide pipe, and the tail end of the second water heating pipe and the first water heating pipe is connected to the second guide pipe; the tail end of the third water heating pipe is the steam outlet end, and the head end of the first water heating pipe is the water inlet end.
4. The electric-arc heat-based steam generator of claim 1, wherein, The heat exchange body is provided with a mounting hole at one end in the transverse direction; the arc generator is mounted in the mounting hole; and the water heating pipes pass through the heat exchange body in the longitudinal direction.
5. The electric-arc heat-based steam generator of claim 4, wherein, The mounting hole is a blind hole; The heat exchange body is prismatic; and the outer wall of the heat exchange body is wrapped with a matching thermal insulation layer.
6. The electric-arc heat-based steam generator of claim 4, wherein, The mounting hole and the arc generator each comprise a plurality of mounting holes arranged at a predetermined distance on the end face of one end of the heat exchange body in the transverse direction; and the plurality of arc generators are respectively mounted in the plurality of mounting holes.
7. The electric-arc heat-based steam generator of claim 4, wherein, The arc generator comprises a cathode and an anode; The cathode is arranged at the bottom of the mounting hole and is electrically connected to the heat exchange body; The anode is arranged in the mounting hole through an insulating heat-conducting pipe and is located above the cathode; the inside of the insulating heat-conducting pipe is a hollow pipe, the lower part of the hollow pipe is provided with a boss protruding inward, the anode is arranged in the hollow pipe, and the edge of the bottom end of the anode abuts on the boss; the top end of the anode is electrically connected to a conductive column, and the outer wall of the conductive column is wrapped with an insulating thermal insulation pipe.
8. The electric-arc heat-based steam generator of claim 7, wherein, The heat exchange body is made of metal material; the anode is made of tungsten alloy material; the cathode is made of tungsten alloy material; the insulating heat-conducting pipe is a magnesium oxide pipe; the insulating thermal insulation pipe is an aluminum oxide pipe; the top end of the cathode is protruding and tapered towards the anode; and the bottom end of the anode is protruding and tapered towards the cathode.
9. The electric-arc heat-based steam generator of claim 7, wherein, The utility model further comprises a power supply assembly electrically connected to the arc generator; the power supply assembly comprises: A circuit board, wherein an anode current circuit and a cathode current circuit are arranged on the circuit board; An anode wire, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to a shunt circuit board; The shunt circuit board is electrically connected to the conductive column; A cathode wire, one end of which is electrically connected to the cathode current circuit, and the other end of which is electrically connected to the heat exchange body.
10. The electric-arc heat-based steam generator of claim 1, wherein, Further comprising a shell body, wherein the shell body comprises a face shell and a bottom shell, a device cavity is formed between the face shell and the bottom shell, and the heat exchange body is installed in the device cavity.