JP2021060161A - Superheated steam generator - Google Patents

Abstract

To provide a superheated steam generator capable of stably supplying superheated steam of a constant temperature in safety and being miniaturized, in a constitution generating superheated steam from water.SOLUTION: This superheated steam generator 10 generates superheated steam by heating water in a liquid or gas state, and includes a conduction coil 32 performing electromagnetic induction heating, and a first tube 26 formed by using a metallic material to be heated by electromagnetic induction heating. The first tube 26 is linearly formed with a relatively large inner diameter, a second tube 28 of a relatively small inner diameter is spirally wound on its outer periphery along an axial direction of the first tube 26, and the second tube 28 and the first tube 26 are disposed in a manner of being communicated with each other. The water is heated by being circulated successively from the second tube 28 to the first tube 26 in a state of heating the first tube 26 by applying a prescribed AC current to the conduction coil 32, and sent from the first tube 26 in a state of prescribed superheated steam.SELECTED DRAWING: Figure 4

Description

The present invention relates to a superheated steam generator that generates superheated steam by electromagnetic induction heating.

Superheated steam is high-temperature steam obtained by further heating saturated steam generated by boiling water. Superheated steam has actions such as heating and drying, and is used in various fields.

As a conventional superheated steam generator, an apparatus for generating superheated steam from water supplied from outside the apparatus is known, as exemplified in Patent Document 1 (Japanese Unexamined Patent Publication No. 2003-21303). Further, an apparatus for generating superheated steam from saturated steam supplied from outside the apparatus is also known, as exemplified in Patent Document 2 (Japanese Patent No. 5149302).

Japanese Unexamined Patent Publication No. 2003-21303 Japanese Patent No. 5149302

In recent years, attention has been paid to the processing and cooking of foods using the heating action of superheated steam. Facilities that intend to use superheated steam for such relatively simple purposes often do not have a saturated steam supply facility such as a boiler, and a device for generating superheated steam from water is required. However, in the conventional superheated steam generator that generates superheated steam from water, the entire device becomes large due to the configuration having two heating sources, a heating source for boiling water and a heating source for heating saturated steam. In addition, there is a problem that it cannot be easily installed because a dedicated facility such as a three-phase 200 [V] power supply is required.

Further, superheated steam at a constant temperature (at least about 300 [° C.]) is required for processing and cooking of foods, and the superheated steam is required to be stably and safely supplied.

The present invention has been made in view of the above circumstances, has a configuration in which superheated steam is generated from water, can stably and safely supply superheated steam at a constant temperature, and can be compact and easily installed. It is an object of the present invention to provide a superheated steam generator.

The present invention solves the above problems by means of a solution as described below as an embodiment.

The superheated steam generator according to the present invention is a superheated steam generator that heats water in a liquid or gaseous state to generate superheated steam, and is heated by an energizing coil that performs electromagnetic induction heating and electromagnetic induction heating. A first tube formed of a metal material is provided, and the first tube is formed in a linear shape having a relatively large inner diameter, and a second tube having a relatively small inner diameter is formed on the outer periphery thereof. It is configured to be wound in a coil shape along the axial direction of the first pipe, is arranged so that the second pipe and the first pipe communicate with each other, and AC of a predetermined frequency is connected to the energizing coil. In a state where the first pipe is heated by energizing an electric current, the water is passed from the second pipe to the first pipe in this order to heat the first pipe to obtain a predetermined superheated steam state. It is a requirement that the configuration is sent from.

According to this, a second pipe heated by the heat radiation is arranged on the outer circumference of the first pipe heated by electromagnetic induction heating, and water is passed through the second pipe to the first pipe in this order to heat the pipe. Therefore, it can be sent out in a predetermined state of superheated steam. Therefore, the heat generated by electromagnetic induction heating can be used for heating water with high efficiency, and superheated steam can be generated from water in a relatively short flow path, so that the entire device can be miniaturized. can do. Further, by allowing water to flow in the order of the second pipe having a relatively small inner diameter to the first pipe having a larger inner diameter, the first pipe can function as a buffer mechanism for pressure fluctuation. Therefore, even if superheater occurs upstream of the first pipe, the pressure fluctuation due to the bumper is buffered when it flows into the first pipe, so that the superheated steam can be supplied stably and safely. it can.

According to the present invention, a superheated steam generator which has a configuration capable of generating superheated steam from water, can stably and safely supply superheated steam at a constant temperature, and has realized miniaturization. It will be possible to provide.

It is the schematic (front side perspective view) which shows the external configuration example of the superheated steam generator which concerns on embodiment of this invention. It is the schematic (front side perspective view) which shows the internal structure example of the superheated steam generator which concerns on embodiment of this invention. It is the schematic (front view) which shows the internal structure example of the superheated steam generator which concerns on embodiment of this invention. It is the schematic (front side perspective view) which shows the structural example of the steam generation mechanism in the superheated steam generator which concerns on embodiment of this invention. It is explanatory drawing explaining the structural example of the piping in the steam generation mechanism shown in FIG. It is explanatory drawing explaining the flow of water in the steam generation mechanism shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view (front side perspective view) showing an example of an external configuration of the superheated steam generator 10 according to the present embodiment. Further, FIG. 2 is a schematic view (front side perspective view) showing an example of the internal configuration of the superheated steam generator 10 according to the present embodiment. Further, FIG. 3 is a schematic view (front view) showing an example of the internal configuration of the superheated steam generator according to the present embodiment. Further, FIG. 4 is a schematic view (front side perspective view) showing a configuration example of the steam generation mechanism 20 in the superheated steam generator according to the present embodiment. Of these, FIG. 4A shows an external view, and FIG. 4B shows a partial cross-sectional view of FIG. 4A. Further, FIG. 5 is an explanatory diagram illustrating a configuration example of a pipe in the steam generation mechanism 20 shown in FIG. Specifically, FIG. 5 (a) shows a front perspective view from an angle different from that of FIG. 4 (a), and FIG. 5 (b) shows a front cross-sectional view so that the connecting portion of each pipe can be seen. Shown. Further, FIG. 6 is an explanatory diagram illustrating the flow of water in the steam generation mechanism 20 shown in FIG. 6 (a) to 6 (d) show the directions of water flow in each pipe.

The superheated steam generator 10 according to the present embodiment (hereinafter, may be simply referred to as “device 10”) introduces water from the outside of the device 10 and heats the water by electromagnetic induction heating to generate superheated steam. It is a device to generate. In the present embodiment, water in a liquid state is introduced, but water in a gaseous state or a gas-liquid mixed state may be introduced. Therefore, "water" in the present application may mean "water in a liquid state, a gas state, or a gas-liquid mixed state".

As shown in FIG. 1, the superheated steam generator 10 includes a housing 12 that can be installed on a tabletop. As shown in FIGS. 2 and 3, inside the housing 12, a steam generation mechanism 20 that heats the supplied water to generate superheated steam, and a steam generation mechanism that introduces water from the outside of the apparatus 10 and generates steam. A liquid feed pump 22 for supplying to 20 and a power supply circuit 24 for performing electromagnetic induction heating are arranged. Further, as shown in FIG. 1, an operation unit 14 that performs operations such as turning on / off the power supply and a delivery nozzle 16 that sends out the generated superheated steam are arranged outside the housing 12. A flow meter 18 for measuring the amount of water to be introduced is arranged as an arbitrary configuration.

Subsequently, the configuration of the steam generation mechanism 20 will be described in detail.

As shown in FIGS. 4A and 4B, the steam generation mechanism 20 is a first tube formed by using an energizing coil 32 that performs electromagnetic induction heating and a metal material that is heated by electromagnetic induction heating. 26 and 26 are provided as a mechanism for performing electromagnetic induction heating. Specifically, the first pipe 26 is formed linearly, and the energizing coil 32 is formed by being wound in a coil shape along the axial direction of the first pipe 26 on the outer periphery of the first pipe 26, and further. The power supply circuit 24 and the energizing coil 32 are connected by electrical wiring (not shown). As a result, the first tube 26 can be heated by electromagnetic induction heating by energizing the energizing coil 32 with an alternating current of a predetermined frequency (for example, about several tens [kHz]) through the power supply circuit 24. Further, in the present embodiment, the energizing coil 32 is formed by using copper (including a copper alloy), but it may be formed by using another conductive material. Further, in the present embodiment, the first pipe 26 is formed of stainless steel (SUS430), but it may be formed of another material as long as it is a metal material heated by electromagnetic induction heating.

Further, the first pipe 26 is formed in a linear shape having a relatively large inner diameter, and a second pipe 28 having a relatively small inner diameter is coiled around the outer circumference along the axial direction of the first pipe 26. It is composed by being turned. Further, the second pipe 28 and the first pipe 26 are arranged so as to communicate with each other. As a result, the second tube 28 can be heated by heat dissipation from the outer periphery of the first tube 26 in a state where the current-carrying coil 32 is energized with an alternating current of a predetermined frequency to heat the first tube 26.

In the present embodiment, the second pipe 28 is wound in contact with the outer periphery of the first pipe 26 so that the heat of the first pipe 26 is more easily transferred to the second pipe 28. The first pipe 26 and the second pipe 28 may have a predetermined gap.

Further, the material of the second tube 28 is not limited, and may be formed by using a metal material heated by electromagnetic induction heating as in the first tube 26, or formed by using a metal material not heated by electromagnetic induction heating. You may. In the present embodiment, the second pipe 28 is formed of stainless steel (SUS304) that is not heated by electromagnetic induction heating, the first pipe 26 is heated by electromagnetic induction heating, and the second pipe is dissipated by heat radiation from the first pipe 26. 28 is heated. As a result, a radial temperature gradient can be generated in which the temperature of the first tube 26 located at the center is the highest. The metal material that is not heated by the electromagnetic induction heating here means a relative property in comparison with the metal material that is heated by the electromagnetic induction heating. Therefore, it is not limited to a completely non-magnetic material, and includes a material having a relatively weak magnetism.

On the other hand, regarding the mechanism related to the water flow path, the energizing coil 32 that performs electromagnetic induction is formed in a hollow tubular shape, and has a configuration that also serves as a pipe for allowing water to flow inside, and one end thereof supplies water. It is arranged so as to communicate with a pipe (not shown) and the other end to communicate with the second pipe 28. Further, the water supply pipe is connected to a water supply source outside the device 10, and a liquid feed pump 22 (see FIG. 2) is arranged in the middle of the water supply pipe. As a result, the liquid feed pump 22 can be operated to introduce water from the outside of the device 10, and then the introduced water can be passed through the energizing coil 32, the second pipe 28, and the first pipe 26 in this order. Therefore, in a state where the current-carrying coil 32 is energized with an alternating current of a predetermined frequency to heat the first pipe 26, water is passed through the energizing coil 32, the second pipe 28, and the first pipe 26 in this order to heat the current-carrying coil 32. It is possible to bring it out from the first pipe 26 in a state of predetermined superheated steam. A delivery nozzle 16 (see FIG. 2) is attached to the outlet 26b of the superheated steam in the first pipe 26, and the superheated steam is sent out from the delivery nozzle 16 projecting to the outside of the device 10.

At this time, by allowing water to flow in the order of the second pipe 28 having a relatively small inner diameter to the first pipe 26 having a larger inner diameter, the first pipe 26 can function as a buffer mechanism for pressure fluctuation. Therefore, even if bumping occurs upstream of the first pipe 26, the pressure fluctuation due to bumping is buffered when flowing into the first pipe 26, so that the first pipe 26 (delivery nozzle 16) overheats. Steam can be supplied stably and safely. The inner diameter of the first pipe 26 is set to about 2 to 6 times the inner diameter of the second pipe 28. As an example, in the present embodiment, the inner diameter of the first pipe 26 is set to about 18 [mm], and the inner diameter of the second pipe 28 is set to about 4 [mm].

Further, the first pipe 26 has a turbulent flow generation mechanism 40 inside which causes turbulent flow in the flowing water. As a result, the temperature difference due to the radial position of the water flowing through the inside can be eliminated, and the superheated steam in a uniform state can be sent out, and the superheated steam can be stably supplied. In the present embodiment, the coil spring is arranged as the turbulent flow generation mechanism 40, but the configuration is not limited to this.

As described above, according to the steam generation mechanism 20, a water flow path is arranged around the first pipe 26 heated by electromagnetic induction heating, and the first pipe centered from the surrounding energizing coil 32. The configuration in which water flows toward 26 makes it possible to match the temperature gradients of the pipe and water in the radial direction. Therefore, the higher the temperature of the piping, the more hot water flows through it. Therefore, an efficient heating mechanism with less temperature drop in each piping can be realized, and the heat radiation to the outside is also heated by the water. Can be used for. As a result, the water flow path can be made shorter than the structure in which water flows from the center to the periphery, and the device 10 can be made smaller. The “piping” means an energizing coil 32, a second pipe 28, and a first pipe 26 that form a water flow path in the steam generation mechanism 20.

Further, the energizing coil 32 can also be used as a pipe for allowing water to flow inside, so that the energizing coil 32 can be cooled at the same time as the water is heated by the heat of the energizing coil 32. That is, an efficient heating mechanism can be realized in which the heat generated by the energization of the energizing coil 32 is used for heating water. Therefore, for example, the water flow path can be made shorter than the structure in which water flows directly from the water supply pipe into the second pipe 28, and the device 10 can be made smaller. In addition, heat generation of the energizing coil 32 can be prevented. Therefore, the heat insulating mechanism provided as appropriate can be simplified, and the device 10 can be miniaturized. Further, since it becomes easy to select the heat insulating material used for the energizing coil 32 and the heat insulating mechanism, it is possible to suppress the manufacturing cost by using an inexpensive material.

Here, an example of the heat insulating mechanism will be described. In the present embodiment, as a heat insulating mechanism, a tubular electrically insulating / heat insulating body 30 (hereinafter, simply referred to as “insulating / heat insulating body 30”) in which the first pipe 26 and the second pipe 28 are arranged inside is provided. An energizing coil 32 is wound around the outer periphery of the heat insulating body 30 along the axial direction of the first pipe 26.

In this way, with the configuration in which the tubular insulating / insulating body 30 is provided between the first pipe 26 and the second pipe 28 and the energizing coil 32, first, the first pipe 26 and the second pipe 28 and the energizing coil are provided. It is possible to reliably electrically insulate the 32 from. Further, it is possible to prevent heat generation inside the housing 12 by insulating the periphery of the first pipe 26 and the second pipe 28 to a predetermined degree. Therefore, it is possible to prevent heat damage to the liquid feed pump 22, the power supply circuit 24, and the like.

On the other hand, the temperature of the insulating / insulating body 30 itself rises due to heat radiation from the outer periphery of the first pipe 26 and the second pipe 28. Therefore, the energizing coil 32 is heated by heat radiation from the outer periphery of the insulating / insulating body 30, and as described above, the water flowing inside can be heated by this heat. In the present embodiment, the insulating / insulating body 30 is formed by using ceramics, but it may be formed by using other materials.

As another arbitrary configuration, the amount of water flowing into the energizing coil 32 can be measured by providing a flow meter 18 (see FIG. 1) in the middle of the water supply pipe. Therefore, the relative amount of superheated steam delivered from the delivery nozzle 16 can be grasped.

As described above, the steam generation mechanism 20 according to the present embodiment has a configuration in which a mechanism for generating saturated steam from water and a mechanism for generating superheated steam from saturated steam are integrated, and water is used using a single heating source. It is possible to realize a configuration that generates superheated steam from. As a result, the superheated steam generator 10 can be downsized. According to this embodiment, for example, the device 10 can be operated by connecting to a water pipe or the like as a water supply source and connecting to a single-phase 100 [V] power source as a power source. Therefore, for example, in a facility that does not have a saturated steam supply facility such as a boiler or a dedicated facility such as a three-phase 200 [V] power supply, or a facility that does not have sufficient indoor space for installing the device. Even if there is, it will be applicable.

When the power supply circuit 24 having a maximum output of 1 [kW] is used in the present embodiment, 800 [mL / h] of water can be introduced and superheated steam having an outlet temperature of 300 to 400 [° C.] can be output. Is. Therefore, for example, by using a power supply circuit 24 having a higher output, it is possible to output superheated steam having an outlet temperature of about 300 to 500 [° C.].

Subsequently, the characteristic configuration of the steam generation mechanism 20 according to the present embodiment will be further described.

First, in the energizing coil 32, an electric insulator (not shown) is interposed between the first coil 34 of the inner layer and the second coil 36 of the outer layer so as to form two layers in the radial direction of the first tube 26. It is provided. By forming the energizing coil 32 in two layers in this way, the number of turns of each of the coils 34 and 36 can be reduced to shorten the axial dimension (as an example, in the present embodiment, the first coil 34 is 40. The winding and the second coil 36 are formed into about 20 windings). Therefore, since the longitudinal dimension of the steam generation mechanism 20 can be shortened, the device 10 can be made smaller. The two-layer coils (first coil 34 and second coil 36) are electrically connected in series by electrical wiring (not shown).

In the present embodiment, the electrical insulator that separates the first coil 34 and the second coil 36 is formed in the form of a sheet using polyimide, and is wound around the outer circumference of the first coil 34. Further, the first coil 34, the electric insulator (polyimide sheet), and the second coil 36 are arranged so as to be in contact with each other so as to be wound around the outer circumference in this order with respect to the insulating / insulating body 30. .. In this way, the heat radiation from each configuration is easily transmitted to the configurations arranged on the outer periphery thereof. However, the present invention is not limited to this, and a gap may be provided in a part or all of the configurations. Further, although the electric insulator is also formed by using polyimide, it may be formed by using another material.

On the other hand, in the two-layer coil (second coil 36 and first coil 34) as a water flow path, the positions of the inlets 36a and 34a and the outlets 36b and 34b coincide with each other in the axial direction, as shown in FIG. It is arranged so as to be wound so as to be wound in the same direction in the circumferential direction. Specifically, in the energizing coil 32, the two-layer coils 36 and 34 are connected via the connecting pipe 37, so that the inflow ports 36a and 34a of each of the coils 36 and 34 are arranged at one end on the 20A side. The outlets 36b and 34b are arranged on the other end 20B side and are wound in the same direction (direction of arrow C).

As a result, as shown in FIG. 6, the water that has flowed into the second coil 36 from the inflow port 36a on the one end 20A side flows in the winding direction of the coil 36 and flows out from the outflow port 36b on the other end 20B side. When viewed in the axial direction, the coil flows in the direction of arrow A as a whole (see FIG. 6A). Next, the water that has passed through the connecting pipe 37 and has flowed into the first coil 34 from the inflow port 34a on the 20A side at one end flows in the winding direction of the coil 34 and flows out from the outflow port 34b on the other end 20B side. When viewed in the direction, it flows in the direction of arrow A as a whole (see FIG. 6B). In this way, the two-layer coils 36 and 34 allow water to flow in the same direction in the circumferential direction and the axial direction so that the directions of the temperature gradients are matched so that the efficiency of the coils 36 and 34 with less temperature drop is small. A specific temperature rise mechanism can be realized.

In addition, the positions of the inlets 36a, 34a, 26a and the outlets 36b, 34b, 26b coincide with each other in the axial direction between the energizing coil 32 (the second coil 36 and the first coil 34) and the first pipe 26. It is arranged so as to. Specifically, as shown in FIG. 5, the inflow port 26a of the first pipe 26 is arranged at one end on the 20A side, and the outflow port 26b is arranged on the other end 20B side. Further, the outlet 34b of the first coil 34 and the inlet 28a of the second pipe 28 are connected via the connecting pipe 38 on the other end 20B side, and the outlet 28b of the second pipe 28 and the flow of the first pipe 26 are connected. The inlet 26a is connected to the inlet 26a at one end on the 20A side via a connecting pipe 39.

As a result, as shown in FIG. 6, the water that flows out from the first coil 34, passes through the connecting pipe 38, and flows into the second pipe 28 from the inflow port 28a on the other end 20B side passes through the second pipe 28. It passes through and flows out from the outlet 28b on the 20A side at one end (see FIG. 6C). Next, the water that has passed through the connecting pipe 39 and has flowed into the first pipe 26 from the inflow port 26a on the 20A side at one end flows in the direction of arrow A and is sent out as superheated steam from the outflow port 26b on the other end 20B side (FIG. 6 (d)). In this way, water is passed through the energizing coil 32 and the first pipe 26 in the same axial direction so that the directions of the temperature gradients are matched so that the temperature drops in the energizing coil 32 and the first pipe 26. A small and efficient temperature raising mechanism can be realized. Since the steam generation mechanism 20 has a temperature gradient in the direction of arrow A as a whole, the temperature on the other end 20B side where the superheated steam outlet 26b is located is higher than that on the one end 20A side. Therefore, it is possible to prevent the temperature of the superheated steam sent from the outlet 26b from dropping.

As described above, by arranging each pipe so that water flows in each pipe in the same direction as much as possible, each pipe can be maintained at a high temperature, so that superheated steam can be stably supplied. Become. This configuration can be applied even when the energizing coil 32 is configured in one layer, and water is allowed to flow in the same direction through the energizing coil 32 in one layer and the second pipe 28 or the first pipe 26. Similarly, an efficient temperature raising mechanism with less temperature drop in each pipe can be realized.

Of the connecting pipes 37, 38, and 39 that communicate each pipe, the energizing coil 32 and the second pipe 28 must be electrically insulated. Therefore, the connecting pipe 38 that communicates these must be made of an electrically insulating material. Must be formed using. On the other hand, the other connecting pipes, that is, the connecting pipe 37 that communicates the coils 36 and 34, and the connecting pipe 39 that communicates the second pipe 28 and the first pipe 26 may be formed by using any material. .. If the connecting pipe 37 is formed by using a conductive material, the connecting pipe 37 forms an energizing circuit in which the coils 36 and 34 are electrically connected in series, so that the electrical wiring between the coils 36 and 34 is formed. (Not shown) becomes unnecessary. In the present embodiment, as an example, the connecting pipe 37 and the connecting pipe 38 are formed by using an electrically insulating material, and the connecting pipe 39 is formed by using a metal material. Although silicone is used as the electrically insulating material in this embodiment, Teflon (registered trademark), rubber, or the like may be used.

In addition, as a characteristic configuration, as shown in FIG. 3, the steam generation mechanism 20 (first pipe 26) is arranged inside the housing 12 so that the axial direction is inclined by a predetermined angle with respect to the horizontal. .. As a result, the longitudinal dimension of the device 10 can be shortened, which can contribute to the miniaturization of the device 10.

As described above, according to the superheated steam generator according to the present invention, a second pipe heated by the heat radiation is arranged on the outer periphery of the first pipe heated by electromagnetic induction heating, and water is supplied to the second pipe. By passing through the first pipe in this order and heating it, it is possible to bring it out in a predetermined superheated steam state. Therefore, the heat generated by electromagnetic induction heating can be used for heating water with high efficiency, and superheated steam can be generated in a relatively short flow path, so that the entire device can be miniaturized. Can be done. Further, by allowing water to flow in the order of the second pipe having a relatively small inner diameter to the first pipe having a larger inner diameter, the first pipe can function as a buffer mechanism for pressure fluctuation. Therefore, even if superheater occurs upstream of the first pipe, the pressure fluctuation due to the bumper is buffered when it flows into the first pipe, so that the superheated steam can be supplied stably and safely. it can.

The present invention is not limited to the examples described above, and various modifications can be made without departing from the present invention.

10 Superheated steam generator 12 Housing 14 Operation unit 16 Delivery nozzle 18 Flow meter 20 Steam generation mechanism 22 Liquid feed pump 24 Power supply circuit 26 1st pipe 28 2nd pipe 30 Electrical insulation / insulation 32 Energizing coil 34 1st coil 36 Second coil 37, 38, 39 Connecting pipe 40 Turbulent flow generation mechanism

Claims (9)

A superheated steam generator that heats liquid or gaseous water to generate superheated steam.
An energizing coil that performs electromagnetic induction heating and
A first tube formed of a metal material heated by electromagnetic induction heating.
The first pipe is formed in a straight line with a relatively large inner diameter, and a second pipe having a relatively small inner diameter is coiled around the outer circumference along the axial direction of the first pipe. It is composed and
The second pipe and the first pipe are arranged so as to communicate with each other, and the water is applied to the first pipe in a state where an alternating current of a predetermined frequency is applied to the energizing coil to heat the first pipe. A superheated steam generator having a configuration in which a predetermined superheated steam is produced by passing an electric current from two pipes to the first pipe in this order and heating the superheated steam from the first pipe. Further provided with a tubular insulating / insulating body in which the first pipe and the second pipe are arranged inside,
The energizing coil is formed in a hollow tubular shape using a metal material, and has a configuration that also serves as a pipe for allowing water to flow inside, and also has a shaft of the first pipe on the outer periphery of the insulating / insulating body. It is composed of windings along the direction.
The energizing coil and the second pipe are arranged so as to communicate with each other, and the water is passed through the energizing coil to be heated by heat dissipation from the outer periphery of the insulating / insulating body. The superheated steam generator according to claim 1, wherein the superheated steam generator is configured to flow into a pipe. As the energizing coil, an inner layer first coil and an outer layer second coil are provided with an insulator interposed therebetween so as to form two layers with respect to the radial direction of the first tube.
The second coil and the first coil are communicated with each other, and the first coil and the second pipe are communicated with each other, and the water is passed from the second coil to the first coil in this order. The superheated steam generator according to claim 2, wherein the superheated steam generator has a configuration in which it is allowed to flow and heated by heat radiation from the outer periphery of the insulating / insulating body and then flows into the second pipe. The first coil and the second coil are arranged so that the positions of the inlet and outlet coincide with each other in the axial direction, and are wound in the same direction in the circumferential direction to provide the water. The superheated steam generator according to claim 3, wherein the first coil and the second coil are configured to flow in the same direction in the axial direction and the circumferential direction. The superheated steam generator according to any one of claims 1 to 4, wherein the first pipe has a turbulent flow generating mechanism that causes turbulent flow in the flowing water. The superheated steam generator according to any one of claims 1 to 5, wherein the first pipe is arranged in the housing so as to be inclined at a predetermined angle with respect to the horizontal direction. The superheated steam generator according to any one of claims 1 to 6, wherein the second pipe is formed by using a metal material that is not heated by electromagnetic induction heating. The superheated steam generator according to any one of claims 1 to 7, wherein the first pipe has an inner diameter of 2 to 6 times that of the inner diameter of the second pipe. The energizing coil and the first pipe are configured so that the positions of the inflow port and the outflow port coincide with each other in the axial direction, and the water is allowed to flow in the same axial direction between the energizing coil and the first pipe. The superheated steam generator according to any one of claims 1 to 8, wherein the superheated steam generator is configured to allow passage.

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