Horizontal steam generator based on electromagnetic heating

Abstract

A horizontal steam generator based on electromagnetic heating, which comprises a water tank, installation holes are arranged through left and right end surfaces of the water tank, an isolation sleeve is installed in the installation holes, the isolation sleeve is hollow inside and is sealed against water; an electromagnetic heating coil is installed in the isolation sleeve, the electromagnetic heating coil heats the isolation sleeve when working, so that heat is transferred to water inside the water tank, the water temperature in the water tank is increased to form steam, and the steam is discharged through a steam pipe at the top of the water tank. The electromagnetic heating coil is installed in the isolation sleeve, and the isolation sleeve is directly heated through electromagnetic induction. The non-contact heating mode avoids the loss of intermediate heat transfer medium in traditional resistance wire heating, the heat conversion efficiency is very high, the water temperature rising speed can be significantly improved, the steam generation time is shortened, and therefore the energy consumption is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, specifically a horizontal steam generator based on electromagnetic heating. Background Technology

[0002] Steam generators are widely used thermal energy devices in industrial production, agricultural production, and daily life. Their main function is to heat water into steam to meet the needs of various gas-consuming equipment. Common applications include, but are not limited to, food processing, medical sterilization, chemical production, heating and cooling, and bathing and sauna facilities.

[0003] Currently, there are many types of steam generators on the market, and their heating methods mainly include coal-fired heating, oil / gas-fired heating, and electric heating. Among them, electric heating steam generators are widely used in many application scenarios due to their advantages such as cleanliness, environmental friendliness, and ease of operation.

[0004] However, existing electrically heated steam generators generally have some drawbacks. These drawbacks are mainly reflected in: 1. Relatively low heating efficiency: Most existing electric steam generators use resistance wires for direct or indirect heating. The resistance wires generate heat through the thermal effect of electric current, and then transfer the heat to the water in the tank. This heating method suffers from significant heat loss, such as the heat loss of the resistance wire itself and the inevitable energy dissipation during the transfer of heat from the resistance wire to the water, resulting in relatively low overall heating efficiency. This not only increases energy consumption but also prolongs the waiting time for steam to be generated.

[0005] 2. Short lifespan of the resistance wire: Under prolonged high-temperature operation, the resistance wire material is prone to oxidation, aging, and even melting. Especially under conditions of poor water quality or frequent start-stop cycles, scaling on the surface of the resistance wire becomes more severe, further affecting heat dissipation, accelerating wire damage, and resulting in a shorter lifespan. This increases equipment maintenance costs and downtime.

[0006] 3. Risk of electrical leakage: In traditional resistance wire heating methods, the resistance wire is usually directly immersed in water or in contact with water through a metal casing. Although there is an insulation layer for protection, long-term operation in high temperature, high pressure, and humid environments can easily cause the insulation layer to break down and age, leading to electrical leakage between the resistance wire and the water. Once leakage occurs, it may not only waste electrical energy, but more importantly, it will pose a serious safety hazard to the operator. Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a horizontal steam generator with electromagnetic heating that is simple in structure, low in manufacturing cost, high in heating efficiency, long in service life, high in operational safety, and reduces maintenance costs.

[0008] The purpose of this utility model is achieved in the following way: a horizontal steam generator based on electromagnetic heating, which includes a water tank. The water tank has mounting holes through its left and right end faces. An isolation sleeve is installed inside the mounting holes. The isolation sleeve is hollow and water-sealed relative to the water tank. An electromagnetic heating coil is installed inside the isolation sleeve. When the electromagnetic heating coil is working, it heats the isolation sleeve itself, thereby transferring heat to the water inside the water tank, thereby raising the water temperature inside the water tank to form steam. The steam is discharged through the steam pipe at the top for use by gas-using equipment.

[0009] Furthermore, the water tank is elliptical in shape and is covered by a support frame.

[0010] Furthermore, the outer cylindrical surface of the isolation sleeve is provided with several support plates, which are connected to the inner surface of the water tank to fix the isolation sleeve laterally on the mounting hole.

[0011] Furthermore, the isolation sleeve is a cylindrical tube, with both ends welded and fixed to the mounting holes.

[0012] Furthermore, the water tank and isolation sleeve are made of stainless steel.

[0013] Furthermore, the bottom of the water tank is provided with a water inlet, the height of which is lower than the height of the mounting hole.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0015] 2. This invention employs electromagnetic induction heating technology to efficiently convert electrical energy into heat energy. The electromagnetic heating coil is installed inside the isolation sleeve, directly heating the isolation sleeve itself through electromagnetic induction. This non-contact heating method avoids the intermediate heat transfer medium loss present in traditional resistance wire heating, resulting in extremely high heat conversion efficiency. It can significantly increase the water temperature rise rate and shorten the steam generation time, thereby greatly reducing energy consumption and achieving high efficiency and energy saving.

[0016] 3. The electromagnetic heating coil is completely installed inside the isolation sleeve, which is hollow and reliably water-sealed with the water inside the tank. This means the heating coil is completely physically isolated from the water in the tank, with no direct contact whatsoever. This fundamentally eliminates the safety hazard of leakage caused by aging or damage to the insulation layer of the resistance wire in traditional electric heaters, greatly improving the safety of equipment operation and protecting the personal safety of operators.

[0017] 4. Since the electromagnetic heating coil does not come into direct contact with water, it avoids the problems of traditional resistance wires being easily corroded by scale, oxidized, or even burned out in humid and high-temperature environments, effectively extending the service life of the heating element.

[0018] 5. As the heat-receiving element, the isolation sleeve can be made of high-temperature and corrosion-resistant materials, and the impact of scale buildup on its surface on heating efficiency is far less than that of directly heated resistance wires. This invention reduces vulnerable parts from the source, thereby lowering the equipment failure rate and subsequent maintenance and replacement costs. Attached Figure Description

[0019] Figure 1 This is a rendering of the overall assembly of the present utility model.

[0020] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Water tank; 2. Mounting hole; 3. Isolation sleeve; 4. Electromagnetic heating coil; 5. Steam pipe; 6. Bracket; 7. Support plate; 8. Water inlet. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings. A horizontal steam generator based on electromagnetic heating includes a water tank 1. The water tank 1 has mounting holes 2 through its left and right end faces. An isolation sleeve 3 is installed inside the mounting holes 2. The isolation sleeve 3 is hollow and water-sealed relative to the water tank 1. An electromagnetic heating coil 4 is installed inside the isolation sleeve 3. When the electromagnetic heating coil 4 is working, it heats the isolation sleeve 3 itself, thereby transferring heat to the water inside the water tank 1, thereby raising the temperature of the water inside the water tank 1 to form steam. The steam is discharged through the steam pipe 5 at the top for use by gas-using equipment.

[0023] In this embodiment: water tank 1 serves as the main water container, holding the water to be heated.

[0024] Mounting hole 2 penetrates the left and right end faces of the water tank, providing a channel and positioning structure for installing the heating unit.

[0025] The isolation sleeve 3 is installed inside the mounting hole 2. It is hollow inside and forms a reliable water seal with the water tank 1, completely isolating the cavity inside the isolation sleeve 3 from the water in the water tank 1. However, the outer wall of the isolation sleeve 3 is in direct contact with the water inside the water tank 1.

[0026] The electromagnetic heating coil 4 is placed inside the hollow cavity of the isolation sleeve 3.

[0027] When the electromagnetic heating coil 4 is energized, it generates a high-frequency alternating magnetic field. This magnetic field can penetrate the material of the isolation sleeve 3, inducing eddy currents and hysteresis losses within the isolation sleeve 3 itself, causing the isolation sleeve 3 to heat up as a heated element. The heated isolation sleeve 3 then efficiently transfers the heat it generates to the water inside the water tank 1, which is in close contact with its outer wall, through thermal conduction.

[0028] After absorbing heat, the water inside water tank 1 rapidly increases in temperature and vaporizes to form steam upon reaching its boiling point.

[0029] The generated steam is discharged through the steam pipe 5 at the top of the water tank 1 and supplied to external gas-using equipment.

[0030] In this embodiment, electromagnetic induction heating is employed, with energy directly acting on the isolation sleeve 3 and causing it to heat up. This avoids the heat transfer medium loss in the traditional resistance wire heating process, resulting in extremely high energy conversion efficiency, rapid heating, and significantly reduced energy consumption. Simultaneously, it is safe and reliable, with no risk of leakage: the electromagnetic heating coil 4 is completely encapsulated inside the isolation sleeve 3, achieving physical isolation and a reliable water seal from the water in the water tank 1. This fundamentally eliminates the risk of leakage caused by direct contact between the heating element and water, ensuring the safety of equipment operation, and especially avoiding the danger of electric shock due to insulation aging.

[0031] In addition, the heating coil does not come into direct contact with water, thus avoiding damage from scale corrosion, oxidation, or dry burning, significantly extending the coil's service life. The isolation sleeve 3, as the heat-receiving element, can be made of high-temperature and corrosion-resistant materials. Even if scale is present, it is easy to clean and does not directly affect the heating element, thereby reducing the equipment's failure rate and maintenance frequency.

[0032] In one embodiment: the water tank 1 is elliptical in shape, and its exterior is covered by a support frame 6. In this embodiment: the water tank 1 adopts an elliptical cross-section design, which differs from the common circular or square shape. The support frame 6 surrounds and supports the elliptical water tank 1, providing it with external structural support.

[0033] In this embodiment, an elliptical water tank may have a higher volumetric efficiency than a circular water tank within a specific installation space. Simultaneously, the elliptical cross-section can provide better stress distribution in certain pressure vessel designs, enhancing pressure resistance. Furthermore, the externally encased support 6 provides robust support for the elliptical water tank, effectively strengthening the overall structural strength and stability of the tank, ensuring that the equipment is not easily deformed during operation and handling, and stably bearing the weight of water and steam.

[0034] In one embodiment: a plurality of support plates 7 are provided on the outer cylindrical surface of the isolation sleeve 3, and the support plates 7 are connected to the inner surface of the water tank 1 to fix the isolation sleeve 3 laterally on the mounting hole 2.

[0035] In this embodiment, the ends of these support plates 7 are connected and fixed to the inner wall surface of the water tank 1, forming a stable support structure. Through this fixing method, the isolation sleeve 3 is precisely and firmly positioned laterally and fixed within the mounting hole 2 of the water tank 1, preventing it from shaking or shifting during use due to water flow impact, thermal expansion and contraction, or external vibration. Simultaneously, it ensures the precise and stable positioning of the heating core component isolation sleeve 3 within the water tank, preventing shaking or loosening during operation, thereby guaranteeing the stable operation of the heating system and extending the equipment's lifespan.

[0036] In one embodiment, the isolation sleeve 3 is a cylindrical tube, with both ends welded and fixed to the mounting holes 2. During electromagnetic induction heating, the cylindrical structure experiences uniform heating around its circumference and relatively uniform internal stress distribution, reducing stress concentration and helping to extend the service life of the isolation sleeve 3.

[0037] In one embodiment, the water tank 1 and the isolation sleeve 3 are made of stainless steel. Both the water tank 1 and the isolation sleeve 3, the two core components that directly contact water and steam, are made of stainless steel. Stainless steel has excellent corrosion resistance, mechanical strength, and high-temperature resistance; some types of stainless steel are also magnetic and can be heated by electromagnetic induction. Stainless steel effectively resists corrosion from water and steam, maintaining structural integrity even under long-term high-temperature and high-pressure conditions, preventing rust, scale buildup, and water contamination, thus ensuring steam quality. This significantly extends the service life of the water tank 1 and the isolation sleeve 3, reducing the frequency of replacement. Furthermore, stainless steel has good mechanical strength and toughness, capable of withstanding the internal pressure and temperature changes of the steam generator during operation, ensuring long-term stable and safe operation of the equipment.

[0038] In one embodiment: the bottom of the water tank 1 is provided with a water inlet 8, and the height of the water inlet 8 is lower than the height of the mounting hole 2.

[0039] In this embodiment, the height of the water inlet 8 is intentionally lower than the height of the mounting hole 2. This means that even if the water level in the water tank 1 drops to the minimum allowable level of the water inlet 8, the water level in the water tank 1 will still completely cover the isolation sleeve 3 installed inside the mounting hole 2 and the entire heating area. This design is a crucial safety measure. By ensuring that the minimum water level always covers the electromagnetic heating isolation sleeve 3, the heating element can be effectively prevented from burning dry in a waterless state, thereby preventing serious safety accidents such as equipment damage, deformation, or even fire caused by overheating, greatly improving the operational safety of the steam generator. At the same time, cold water is supplied at the bottom, thereby effectively preventing the hot water layer from being disturbed and ensuring the temperature of the evaporation surface.

[0040] In summary, the horizontal steam generator based on electromagnetic heating provided by this utility model has the core working principle of cleverly utilizing electromagnetic induction technology to efficiently and safely transfer heat to water through an isolation sleeve, thereby achieving rapid steam generation.

[0041] The main body of the steam generator is a horizontal water tank 1, which serves as the primary container for holding and heating water. To facilitate the integration of the heating unit, mounting holes 2 are provided through the left and right ends of the water tank 1. Hollow isolation sleeves 3 are precisely installed inside these mounting holes 2. The isolation sleeves 3 achieve a reliable water seal with the water inside the water tank 1, ensuring complete physical isolation of the electromagnetic heating coils 4 inside the isolation sleeves from the water, thus avoiding the risk of electric leakage. Support plates 7 are provided on the outer cylindrical surface of the isolation sleeves 3. These support plates 7 are connected to the inner surface of the water tank 1, firmly fixing the isolation sleeves 3 laterally to the mounting holes 2, ensuring the stability and precise alignment of the heating components. The isolation sleeves 3 themselves are preferably cylindrical, with both ends firmly connected to the mounting holes 2 by welding, further enhancing the structural strength and sealing. Furthermore, both the water tank 1 and the isolation sleeves 3 are made of stainless steel, ensuring excellent corrosion resistance, mechanical strength, and hygiene, thereby extending the service life of the equipment and guaranteeing steam quality.

[0042] The core heating mechanism lies in the fact that the electromagnetic heating coil 4 is safely installed inside the hollow cavity of the isolation sleeve 3. When the electromagnetic heating coil 4 is energized, it generates a high-frequency alternating magnetic field. This magnetic field penetrates the wall of the isolation sleeve 3 and induces eddy currents and hysteresis losses within the isolation sleeve 3 itself, causing the isolation sleeve 3 to heat up rapidly and uniformly. This non-contact electromagnetic induction heating method avoids the heat loss of the intermediate medium present in traditional resistance wire heating, achieving extremely high energy conversion efficiency.

[0043] In addition, the heated isolation sleeve 3 efficiently transfers the heat it generates to the water inside the water tank 1 that is tightly surrounding it. After absorbing the heat, the water temperature rises rapidly until it boils, generating a large amount of steam. The generated steam is discharged through the steam pipe 5 at the top of the water tank 1 and delivered to external gas-using equipment for utilization.

[0044] To optimize the overall performance and safety of the equipment, the water tank 1 is externally covered by a support frame 6, giving the tank an elliptical shape and improving structural stability, space utilization, and aesthetics. More importantly, a water inlet 8 is located at the bottom of the water tank 1, and its height is designed to be lower than the mounting hole 2. This crucial safety design ensures that the heating area containing the isolation sleeve 3 is completely covered by water at any operating water level, effectively preventing the heating element from burning out and significantly enhancing the safety and durability of the equipment.

[0045] In summary, this utility model, through the integration of efficient electromagnetic heating technology, a safe physical isolation structure, and a series of optimized component designs and material selections, ultimately achieves a highly efficient, energy-saving, safe, durable, and easy-to-maintain horizontal steam generator, which can therefore be widely promoted and used.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A horizontal steam generator based on electromagnetic heating, characterized in that: It includes a water tank (1), and the water tank (1) has mounting holes (2) through its left and right ends. An isolation sleeve (3) is installed inside the mounting holes (2). The isolation sleeve (3) is hollow inside and water-sealed relative to the water tank (1). An electromagnetic heating coil (4) is installed inside the isolation sleeve (3). When the electromagnetic heating coil (4) is working, it heats the isolation sleeve (3) itself, thereby transferring heat to the water inside the water tank (1), thereby raising the water temperature inside the water tank (1) to form steam. The steam is discharged through the steam pipe (5) at the top and used by gas-using equipment.

2. A horizontal steam generator based on electromagnetic heating according to claim 1, characterized in that: The water tank (1) is elliptical in shape and is covered with a support (6).

3. A horizontal steam generator based on electromagnetic heating according to claim 1, characterized in that: The outer cylindrical surface of the isolation sleeve (3) is provided with several support plates (7), which are connected to the inner surface of the water tank (1) to fix the isolation sleeve (3) horizontally on the mounting hole (2).

4. A horizontal steam generator based on electromagnetic heating according to claim 1, characterized in that: The isolation sleeve (3) is a cylindrical tube, and its two ends are welded and fixed to the mounting holes (2).

5. A horizontal steam generator based on electromagnetic heating according to claim 1, characterized in that: The water tank (1) and the isolation sleeve (3) are made of stainless steel.

6. A horizontal steam generator based on electromagnetic heating according to claim 1, characterized in that: The water tank (1) is provided with a water inlet (8) at the bottom, and the height of the water inlet (8) is lower than the height of the mounting hole (2).

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