Electromagnetic induction heat source device and steam generator, hot air generator and cold air generator utilizing the same

Abstract

To provide an electromagnetic induction warm air generator that can be incorporated into various production lines and saves space, capable of not only generating warm air and heating but also producing cool air and cooling effects.SOLUTION: A rotor 1a, equipped with multiple permanent magnets 5 mounted on a shaft 1 as its rotational axis, is inserted into the interior of a heated pipe 2. The heated pipe 2 features a coil-shaped specific heat medium flow path 8 wound around its outer circumference. The rotor 1a and the heated pipe 2 are housed within a cylindrical outer jacket 3. Multiple air-blowing groove strips 13 are formed along the inner circumference of a cylindrical wall 7 of the outer jacket 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an electromagnetic induction type heat source device that generates steam, warm air heating, hot water supply by Joule heat obtained by generating eddy current using a permanent magnet, and generates cold air for cooling by utilizing the heat of vaporization when the heat medium evaporates, contributing to air conditioning in various factories, agricultural facilities, and ordinary houses.

Background Art

[0002] Conventionally, various electromagnetic induction heating devices using a method of induction heating that generates an alternating magnetic field by an alternating current have been proposed. For example, in an induction heating device composed of a conductive heating object and an alternating magnetic field generation means, a direct current magnetic field generation means is a permanent magnet, and an alternating magnetic field is applied to this direct current magnetic field to rapidly heat the heating object (see Patent Document 1), or a heating device in which a plurality of permanent magnets are arranged on the outer periphery of a rotary body capable of generating eddy current (see Patent Document 2), etc. have been proposed.

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] However, the above conventional devices are applied to drying and heating of industrial materials, and in fact, there are almost no application examples as heating devices in ordinary households and in the agricultural field.

[0005] Therefore, the present inventor has previously proposed an electromagnetic induction type hot air generation device that is useful as a highly efficient, safe, and economical heat source in ordinary households and the agricultural field with a simple configuration, referring to Patent Document 3.

[0006] The electromagnetic induction type hot air generator described in Patent Document 3 is generally composed of a flat disc-shaped rotating body rotatably mounted with a permanent magnet inside, a heating section containing a conductive material positioned near the flat disc-shaped rotating body and placed in the magnetic field created by the permanent magnet, and a hot air capture plate positioned near the heating section and perforated with multiple hot air circulation holes. It offers the following advantages: "It is a self-heating device that generates heat in the conductive material by eddy currents, resulting in high thermal efficiency, and it is an ecological heat source as it does not produce carbon dioxide. Furthermore, it consumes little electricity, keeping running costs low. In addition, its simple structure, which involves placing a permanent magnet inside the rotor and rotating it near the conductive material, makes it less prone to malfunction and easy to maintain. Moreover, temperature adjustment is easy as it only requires adjusting the rotor's rotation speed. The hot air capture plate, perforated with multiple hot air circulation holes, efficiently captures the Joule heat generated in the heating section."

[0007] The inventors have made improvements to the electromagnetic induction type hot air generator to further enhance its usability. With the aim of integrating the conventional batch-type device into various manufacturing lines and saving space, and utilizing the heat of vaporization generated when the specific heat transfer medium evaporates due to the generated heat, the inventors have diligently researched how to produce not only hot air and heating, but also cold air and cooling. As a result, they have developed a device that uses electromagnetic induction with permanent magnets to provide not only hot water but also heating and cooling. [Means for solving the problem]

[0008] The electromagnetic induction heat source device of the present invention is made of a conductive material, and on its outer surface Arranged in a barrel roll (spiral) shape established Multiple heat dissipation devices hole and provided wound in a coil shape Equipped with a specific heat medium flow passage The pipe to be heated (first Cylindrical body ) And multiple permanent magnets are attached to it, with a shaft running longitudinally through its center as the axis of rotation. cylindrical Rotor , inserted into the heated pipe (first cylindrical body) Established, Furthermore, the rotor and the heated pipe (first cylindrical body) are housed inside a cylindrical outer casing (second cylindrical body), and multiple barrel-roll (spiral) shaped heat-capturing plates are erected along the inner circumferential surface inside the cylindrical wall of the outer casing (second cylindrical body), forming multiple air-blowing grooves. When the rotor rotates Overcurrent is generated when the N and S magnetic poles cross alternately. Due to electromagnetic induction, The pipe to be heated (first cylindrical body) Joule heat is generated in the above Heat dissipation The specific heat medium flowing through the specific heat medium passage is heated by releasing hot air from the holes, and This is an axial flow type system in which hot air is blown out to the outside from the blower groove by the negative pressure of a propeller provided at the tip of the shaft. This is its first characteristic.

[0009] The electromagnetic induction heat source device of the present invention is useful for steam generators for power generation, hot air generators in agricultural facilities, and heating and cooling for various factories, agricultural facilities, and general houses. The heat transfer medium that can be used with this invention is water, steam, heated air, gas, oil, etc. [Effects of the Invention]

[0010] The electromagnetic induction heat source device of the present invention has the following excellent effects. (1) Because it is a self-heating method that generates heat in conductive materials by eddy currents, it has high thermal efficiency and does not produce carbon dioxide, making it an ecological heat source. In addition, it consumes little electricity, so running costs can be kept low. (2) By adopting an axial flow system, it is possible to integrate it into various manufacturing lines and save space. (3) By selecting a specific heat medium or utilizing the heat of vaporization when the specific heat medium evaporates, it is possible to generate not only hot air and heating effects, but also cold air and cooling effects, enabling not only hot water supply but also heating and cooling. [Brief explanation of the drawing]

[0011] [Figure 1] This is an exploded perspective view showing one embodiment of the electromagnetic induction heat source device according to the present invention. [Figure 2] (a) is a partially dissected perspective view of the electromagnetic induction heat source device, and (b) is a cross-sectional view taken along line A-A. [Figure 3] (a) is a schematic front cross-sectional view of one embodiment of the water heater according to the present invention, and (b) is a cross-sectional view taken along the line B-B in (a). [Figure 4] This is a schematic front cross-sectional view showing one embodiment of seawater separation using a steam generator according to the present invention. [Modes for carrying out the invention]

[0012] The present invention rotates a rotor with a permanent magnet having a strong magnetic force attached inside at a high speed near a conductive material such as a metal plate. As a result, the N and S magnetic poles alternately cross the outer jacket made of a conductive material covering the periphery of the rotor. As a result, eddy currents are generated in the conductive material itself due to the electromagnetic induction phenomenon, and this eddy current is converted into thermal energy to utilize the phenomenon that the conductive material generates heat.

[0013] As the conductive material, it is preferable to select a metal of a good conductor such as copper, silver, aluminum, stainless steel, etc. that easily generates eddy currents due to magnetic force.

[0014] As the permanent magnet, for example, it is preferable to use a permanent magnet with a surface of 3000 gauss or more such as a neodymium magnet or a samarium magnet. The stronger the magnetic force of the permanent magnet, the higher the temperature at which the conductive material generates heat. The permanent magnet rotates around the conductive material at a speed of several 100 rpm or more. The strength, number of poles, and rotational speed of the permanent magnet are determined according to the required heat generation amount and application. The adjustment of the heating temperature can be easily performed by adjusting the rotational speed of the rotor.

[0015] As the material of the cylinder body of the heated pipe 1 and the outer jacket 3, it is preferable to select a metal of a good conductor such as copper, silver, aluminum, stainless steel, etc. similar to the conductive material used for the rotor.

Example

[0016] As shown in FIGS. 1 to 2, the electromagnetic induction type heat source device of this embodiment includes a heated pipe (first cylinder) 2 provided with a coiled specific heat medium flow path 8 wound around its outer peripheral surface, and a columnar rotor 1a with a plurality of permanent magnets 5 attached thereto with a shaft 1 extending in the longitudinal direction inside as a rotation axis. Further, the rotor 1a and the heated pipe (first cylinder) 2 are installed inside a cylindrical outer jacket (second cylinder) 3. Inside the cylinder wall 7 of the outer jacket 3, a plurality of barrel roll (spiral) shaped cold and hot guide fins (heat capture plates) 6 are erected along the inner peripheral surface, and a plurality of air blowing groove strips 13 are formed.

[0017] The device generates Joule heat in the heated pipe 2 through electromagnetic induction as the rotor 1a rotates, and dissipates hot air through multiple heat dissipation holes 2a drilled in the heated pipe 2. It also serves as a heat source device that heats the specific heat medium (e.g., tap water) flowing through the specific heat medium flow passage 8 to produce hot water. In other words, this embodiment is an axial flow type device, which allows for integration into various manufacturing lines and space saving. Note that the drive source, such as a motor that rotates the shaft 1, is not specifically shown here.

[0018] Furthermore, the heat dissipation holes 2a and the specific heat medium flow passage 8 are preferably formed in a barrel roll (spiral) shape, which allows for a larger specific surface area. The hot air generated in the multiple air vent grooves 13 is blown to the outside as hot air by the negative pressure of the propeller 4 provided at the tip of the shaft 1.

[0019] The heat capture plate 6 is a means for capturing and collecting Joule heat generated in the heated pipe 2, which is the heat-generating part. As shown in Figure 2, it is provided covered by a substantially cylindrical outer casing (second cylinder) 7 which has an aluminum cooling / heating guide fan (hot air capture plate) 6 composed of multiple airflow grooves 6.

[0020] Then, by introducing ambient temperature air or water into the specific heat medium passage 8 inside the heated pipe 2, which generates heat through electromagnetic induction, the system heats up with its thermal energy to produce hot air, warm air, hot water, or steam. Alternatively, by selecting a specific heat medium or utilizing the heat of vaporization when the specific heat medium evaporates, it is possible to generate not only hot air and heating but also cold air and cooling, enabling not only hot water supply but also heating and cooling. [Examples]

[0021] Next, an example of applying the present invention to a water heater is shown. For convenience, the same reference numerals will be used to denote the same components as in Example 1. As shown in Figure 3, in this embodiment, a cylindrical rotor 1a is inserted into the outer casing 3, which is called a jacket tank and consists of a double-walled outer and inner cylinder. The rotor 1a is attached to a shaft 1 that extends vertically within the inner cylinder and has multiple permanent magnets 5 as its axis of rotation. In this case, the inner cylinder portion corresponds to the heated pipe (first cylinder) 2. Multiple heat conductive plates 15 are arranged radially in multiple stages and spirally between the outer and inner cylinders. Room temperature water CW that flows in from the inlet 3a of the tap water inlet pipe 11 and is stored is heated to hot water or warm water HW and supplied from the outlet 3b through the hot water discharge pipe 12. Note that 9 in the figure is an opening and closing valve for each flow path. [Examples]

[0022] Next, an example of applying the present invention to a solid-liquid separator for separating fresh water and salt from seawater is shown. As shown in Figure 4, the basic configuration of this embodiment is the same as that of the water heater described in Embodiment 3, but in this embodiment, the stored seawater is heated to a temperature at which the water evaporates. That is, it is distilled, and the water vapor WV that becomes the liquid component is stored in an underground water storage tank 10 or cooling tank 14 buried underground through a water vapor flow outlet 3b, and fresh water PW is pumped up by pump P and used, and the salt, which is the solid substance separated and precipitated by distillation, can be removed from the precipitated salt outlet 16 provided on the outer casing 3.

[0023] In other words, an electromagnetic induction heat source device is installed inside the tank, generating an alternating magnetic field to heat the conductive material of the tank body. The generated thermal energy is then used to heat the liquid inside the tank. In this way, instead of an indirect heat exchanger, the conductive material of the piping itself is heated by electromagnetic induction, and the generated thermal energy can heat the specific heat transfer medium flowing inside the piping. Therefore, this can be applied to hot water washing devices that store hot water in a tank using circulating heating, boiler feedwater tanks, and the like.

[0024] Therefore, it can be directly installed in water supply and drainage pipes, air supply pipes, and piping and ducts for air conditioning and heating equipment, eliminating the need for separate heating equipment. In this embodiment, the fluid flowing through the heating element is fresh water or seawater, but it goes without saying that the fluid may also be a heat transfer medium such as oil, air, or gas. [Industrial applicability]

[0025] The present invention is highly practical and extremely useful, as it can be applied to steam generators for power generation, hot air generators in agricultural facilities, and heating and cooling systems in various factories, agricultural facilities, and ordinary houses. [Explanation of Symbols]

[0026] 1. Shaft (rotation axis) 1a Magnet-equipped assembly (rotor) 1b Bearing 2. Heated pipe (first cylindrical body) 2a Heat radiation hole 3. Coat (second cylindrical body) 3a Inlet 3b Outlet 4 propellers 5 Permanent Magnets 6. Thermal guide fins (aluminum plate) 7. Coat (second cylindrical body) 8. Specific heat transfer medium flow path (snake coil) 8a Inlet for specific heat transfer medium 8b Specific heat transfer medium outlet 9 valves 10 Underground water storage tanks 11. Water Inlet Pipe 12 Hot water discharge pipe 13 Air vent grooves 14 Underground cooling tanks 15 Heat Conducting Plate 16 Precipitated salt outlet 17. Steam circulation pipes

Claims

1. The heating pipe (first cylindrical body) is made of a conductive material and has multiple heat dissipation holes arranged in a barrel roll (spiral) shape on its outer surface and a specific heat medium flow passage wound in a coil shape. A cylindrical rotor to which multiple permanent magnets are attached is inserted into the heating pipe (first cylindrical body), with a shaft passing through its center in the longitudinal direction as the axis of rotation. Furthermore, the rotor and the heating pipe (first cylindrical body) are housed in a cylindrical outer casing (second cylindrical body), and the inner surface of the cylindrical wall of the outer casing (second cylindrical body) is located inside. An electromagnetic induction heat source device characterized by being an axial flow type, in which multiple barrel roll (spiral) shaped heat capture plates are erected along the rotor and multiple air blowing grooves are formed, and when the rotor rotates, Joule heat is generated in the heated pipe (first cylindrical body) by electromagnetic induction action which generates an overcurrent as the N and S magnetic poles alternately cross each other, and hot air is radiated from the heat dissipation holes to heat the specific heat medium flowing through the specific heat medium flow passage, and hot air is blown to the outside from the air blowing grooves by the negative pressure of a propeller provided at the tip of the shaft.

2. A steam generator using the electromagnetic induction heat source device described in Claim 1.

3. A hot air generator using the electromagnetic induction type heat source device described in Claim 1.

Images