JP2018115852A - Super-heating stem generating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing costs while blocking a magnetic flux leaking from an induction heating coil.SOLUTION: A super-heating steam apparatus comprises: a steam generating container 10 for storing supplied water inside; an induction heating coil 20 isolated from the steam generating container 10 in a state that the steam generating container 10 is wound in an upward and downward direction, and generating steam by heating the steam generating container 10 with induction heating when it is under an energization condition; and a super-heating steam generating part 30 communicating with the steam generating container 10, isolated from the induction heating coil 20 in a state that the induction heating coil 20 is wound in the upward and downward direction, and generating the super-heating steam by heating the induction heating coil 20 with induction heating when it is under an energization condition. The apparatus includes an annular shield member 40 made of low-resistant metal and provided to surround the steam generating container 10 while being isolated from the induction heating coil 20 in an upper region and a lower region of the induction heating coil 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a superheated steam generator.

  2. Description of the Related Art Conventionally, as a superheated steam generator that heats water to generate steam and heats the generated steam to generate superheated steam, an apparatus including a steam generation container, an induction heating coil, and a shield coil is known.

  The steam generation container has a cylindrical structure and stores water. The induction heating coil is installed separately from the steam generation container in such a manner that the steam generation container is wound in the vertical direction. When the induction heating coil is energized, the steam generation container is heated by induction heating to generate steam in the steam generation container.

  The shield coil includes an upper coil part, an outer coil part, and a lower coil part. The upper coil portion is made of, for example, a high resistance metal such as SUS, has an annular shape whose inner diameter is substantially equal to the inner diameter of the induction heating coil, and communicates with the steam generation container. This upper coil part is installed in the upper region of the induction heating coil in such a manner as to surround the steam generation container while being separated from the induction heating coil.

  The outer coil portion is made of a high resistance metal such as SUS, and communicates with the upper coil portion. The outer coil portion is installed separately from the induction heating coil in such a manner that the induction heating coil is wound along the vertical direction. That is, the inner diameter of the outer coil portion is larger than the inner diameter of the induction heating coil.

  The lower coil portion is made of, for example, a high resistance metal such as SUS, has an annular shape whose inner diameter is substantially equal to the inner diameter of the induction heating coil, and communicates with the outer coil portion. The lower coil portion is installed in a lower region of the induction heating coil so as to surround the steam generation container while being separated from the induction heating coil.

  In the superheated steam generator having such a configuration, when the induction heating coil is energized, the steam generation container and the shield coil are heated by induction heating. As a result, steam is generated in the steam generation container, and the generated steam is heated while passing through the shield coil in the order of the upper coil part, the outer coil part, and the lower coil part to generate superheated steam, and the shield coil is guided. The magnetic flux leaking from the heating coil is shielded (see, for example, Patent Document 1).

JP 2006-64367 A

  By the way, in the superheated steam generation apparatus mentioned above, the shield coil is provided with the upper coil part, the outer coil part, and the lower coil part, and the steam generated in the steam generation container is in the order of the upper coil part, the outer coil part, and the lower coil part. Since it was allowed to pass through the shield coil, there were the following problems.

  That is, the size of the inner diameter is different between the upper coil portion and the lower coil portion, and the outer coil portion, and the upper coil portion, the lower coil portion, and the outer coil portion communicate with the inside of the steam generation container, Since the steam generated in the steam generating container was heated, the piping configuration of the shield coil became a complicated shape, resulting in an increase in manufacturing cost.

  In view of the above circumstances, an object of the present invention is to provide a superheated steam generator capable of reducing the manufacturing cost while blocking the magnetic flux leaking from the induction heating coil.

  In order to achieve the above object, a superheated steam generation device according to the present invention includes a steam generation container for storing supplied water therein, and the steam generation container in such a manner that the steam generation container is wound in a vertical direction. An induction heating coil that is installed away from the container and is heated by induction heating to generate steam in the steam generation container when energized, and communicates with the steam generation container; and The induction heating coil is installed separately from the induction heating coil in a manner that the induction heating coil is wound in the vertical direction, and the steam is generated by being heated by induction heating when the induction heating coil is in the energized state. A superheated steam generator comprising a superheated steam generator that generates superheated steam from steam generated in a container, wherein the superheated steam generator is separated from the induction heating coil in an upper region and a lower region of the induction heating coil. The installed in a manner surrounding the steam generation vessel, and is characterized in that an annular shield member made of a low-resistance metal while.

  In the superheated steam generation device according to the present invention, the shield member has a pipe structure.

  In the superheated steam generation device according to the present invention, the shield member is made of copper.

  In the superheated steam generation device according to the present invention, the shield member is characterized in that a separation dimension from the side surface of the steam generation container is substantially equal to a separation dimension between the side surface of the steam generation container and the induction heating coil. To do.

  In the superheated steam generation device according to the present invention, the shield member is configured not to communicate with the superheated steam generation unit.

  Further, the superheated steam generator according to the present invention is installed separately from the steam generating container for storing the supplied water and the steam generating container in such a manner that the steam generating container is wound in the vertical direction. And when it is energized, the steam generating container is heated by induction heating to generate steam in the steam generating container, and communicates with the steam generating container, and the induction heating coil is vertically moved. From the steam generated in the steam generation container by being heated by induction heating when the induction heating coil is in the energized state. A superheated steam generator comprising a superheated steam generator for generating superheated steam, wherein the superheated steam generator is installed separately from the induction heating coil in an upper region and a lower region of the induction heating coil, and A shield member made of cerite, and the shield member extends in a manner close to the induction heating coil from an annular first shield portion surrounding the steam generation container and an outer peripheral edge portion of the first shield portion. And a second shield part.

  Further, in the superheated steam generation device according to the present invention, the second shield part is configured such that a separation dimension from a side surface of the steam generation container is larger than a separation dimension between the side surface of the steam generation container and the induction heating coil. Features.

  According to the present invention, since the annular shield member is installed in the upper and lower regions of the induction heating coil so as to surround the steam generation container while being separated from the induction heating coil, the upper side of the induction heating coil and Magnetic flux leaking downward can be shielded. In addition, since the annular shield member is made of a low-resistance metal, a current flows in a concentrated manner on the surface of the shield member due to a magnetic field generated when a voltage is applied to the induction heating coil and energized, and heat is generated by electric resistance. Although generated, the amount of generated heat can be suppressed. This shield member is separate from the superheated steam generator that shields the magnetic flux leaking outward from the induction heating coil, and it is not necessary to communicate the superheated steam generator with the inside. Therefore, the shield member and the superheated steam generator can be manufactured separately, the piping configuration can be simplified, and the manufacturing cost can be reduced. Therefore, the manufacturing cost can be reduced while blocking the magnetic flux leaking from the induction heating coil in the vertical direction.

  According to the present invention, the shield member made of ferrite having a high magnetic permeability is installed separately from the induction heating coil in the upper region and the lower region of the induction heating coil, and the annular first shield part is the steam generation container. Therefore, the magnetic flux leaking can be shielded by absorbing the magnetic flux on the upper side and the lower side of the induction heating coil. This shield member is separate from the superheated steam generator that shields the magnetic flux leaking outward from the induction heating coil, and it is not necessary to communicate the superheated steam generator with the inside. Therefore, the shield member and the superheated steam generator can be manufactured separately, the piping configuration can be simplified, and the manufacturing cost can be reduced. Therefore, the manufacturing cost can be reduced while blocking the magnetic flux leaking from the induction heating coil in the vertical direction.

FIG. 1 is a perspective view showing a superheated steam generator according to an embodiment of the present invention. FIG. 2 is a perspective view showing a main part of the superheated steam generator shown in FIG. FIG. 3 is a cross-sectional view schematically showing the main part of the superheated steam generator shown in FIG. FIG. 4 is an enlarged cross-sectional view showing the inside of the steam generation container in an enlarged manner. FIG. 5 is a schematic diagram schematically showing a main part of a modified example of the superheated steam generating apparatus according to the embodiment of the present invention. FIG. 6 is a cross-sectional view schematically showing a main part of another modified example of the superheated steam generation device according to the embodiment of the present invention. FIG. 7 is an explanatory diagram showing the flow of magnetic flux in the main part of the superheated steam generator shown in FIG.

  Exemplary embodiments of a superheated steam generator according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a superheated steam generation apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view showing a main part of the superheated steam generation apparatus shown in FIG. 1, and FIG. It is sectional drawing which shows typically the principal part of the superheated steam generation apparatus shown in FIG.

  The superheated steam generation device exemplified here includes a steam generation container 10, an induction heating coil 20, a superheated steam generation unit 30, and a shield member 40.

  The steam generation container 10 has a thin rectangular parallelepiped shape, and is made of, for example, a high-resistance metal such as SUS having magnetism. This steam generation container 10 has a length a in the left-right direction (thickness direction) smaller than a length b in the front-rear direction (width direction), and the ratio of the length in the left-right direction to the length in the front-rear direction is 1. / 3 or less. Moreover, the steam generation container 10 has a length in the vertical direction (height direction) larger than the length in the front-rear direction.

  A water supply port 11a is formed in the bottom 11 of the steam generation container 10 and is connected to one end of the water supply line 1 through the water supply port 11a. The water supply line 1 is a conduit for supplying water to the steam generation container 10. The water supply port 11 a is an opening that serves as an inlet for water supplied through the water supply line 1. In the steam generation container 10, water supplied through the water supply port 11a is stored inside.

  A steam outlet 12 a is formed at the upper end of the steam generation container 10, that is, at the upper end of the right side 12. The steam outlet 12a is an outlet for steam generated inside the steam generation container 10, as will be described later.

  Furthermore, a plurality (four in the example of FIG. 3) of water removal members 15 are provided inside the steam generation container 10. These moisture removing members 15 are located above the water level L of water stored in the steam generation container 10 and below the steam outlet 12a, that is, the inner wall surface and the left side portion 13 of the right side portion 12. It is provided in the aspect which protrudes inward alternately by the inner wall face. In the following, for the sake of convenience, the moisture removing member 15 provided on the right side portion 12 is also referred to as a right side moisture removing member 15R, and the moisture removing member 15 provided on the left side portion 13 is also referred to as a left side moisture removing member 15L.

  The two right-side moisture removing members 15R are provided on the inner wall surface of the right side portion 12 so as to be spaced apart from each other in the vertical direction. These right-side moisture removal members 15R have a right-side moisture removal base portion 151R and a right-side moisture removal inclined portion 152R.

  The right-side moisture removal base portion 151 </ b> R extends along the vertical direction and is a portion that is bonded to the inner wall surface of the right-side portion 12. The right-side moisture removal inclined portion 152R is a portion that is continuous with the lower end of the right-side moisture removal base portion 151R and extends while gradually inclining to the left as it goes downward from the lower end. The extending end portion of the right-side moisture removing inclined portion 152R is close to the inner wall surface of the left side portion 13, and a gap is formed between the extended end portion and the inner wall surface of the left side portion 13.

  The two left side moisture removing members 15L are provided on the inner wall surface of the left side portion 13 so as to be separated from each other in the vertical direction. These left-side moisture removal members 15L have a left-side moisture removal base portion 151L and a left-side moisture removal inclined portion 152L. The left-side moisture removal base portion 151 </ b> L extends along the vertical direction and is a portion that is bonded to the inner wall surface of the left-side portion 13.

  The left-side moisture removal inclined portion 152L is a portion that is continuous with the lower end of the left-side moisture removal base portion 151L, and that gradually extends to the right as it goes downward from the lower end. The extending end portion of the left moisture removing inclined portion 152L is close to the inner wall surface of the right side portion 12, and a gap is formed between the extended end portion and the inner wall surface of the right side portion 12. Further, the left moisture removal inclined portion 152L of the lower left moisture removal member 15L extends between the right moisture removal inclined portions 152R of the two right moisture removal members 15R.

  As described above, the moisture removing member 15 is provided in such a manner that at least a part thereof is inclined with respect to the inner wall surface.

  The induction heating coil 20 is installed separately from the steam generation container 10 in such a manner that the steam generation container 10 is wound in the vertical direction. This induction heating coil 20 is a conventionally known one, and is energized when a voltage of a specific frequency is applied from an electrically connected power conversion device (not shown), and becomes a steam generation container. 10 is heated by induction heating. In addition, a power converter device incorporates what is called an inverter circuit, and gives the alternating current provided from a commercial power supply to the induction heating coil 20 as alternating current of a specific frequency.

  Although not shown in the figure, a fan is installed in the lower area of the steam generation container 10. The fan is a blowing unit that sends air to the induction heating coil 20 when driven.

  The superheated steam generation unit 30 is a tubular member made of, for example, a SUS material, and is installed separately from the induction heating coil 20 in such a manner that the induction heating coil 20 is wound along the vertical direction. The lower end inlet 31 of the superheated steam generator 30 communicates with the steam outlet 12 a of the steam generation container 10 through the communication line 2.

  Such superheated steam generation unit 30 is heated by induction heating when induction heating coil 20 is energized. Accordingly, the superheated steam generation unit 30 generates superheated steam by heating the steam that is discharged from the steam outlet 12a and supplied through the communication line 2 and passes through the inside. The superheated steam generation unit 30 discharges the generated superheated steam from the upper end outlet 32.

  A plurality of shield members 40 (two in the illustrated example) are provided, and are installed in a manner surrounding the steam generation container 10 while being separated from the induction heating coil 20 in the upper region and the lower region of the induction heating coil 20. ing. These shield members 40 are made of a low resistance metal such as copper and have a rectangular ring shape, and have a pipe structure. Further, the horizontal separation distance of the shield member 40 from the side surface of the steam generation container 10 is substantially the same as the horizontal separation distance between the side surface of the steam generation container 10 and the induction heating coil 20. That is, the separation dimension of the shield member 40 from the side surface of the steam generation container 10 is substantially equal to the separation dimension of the side surface of the steam generation container 10 and the induction heating coil 20.

  In the superheated steam generator having the above-described configuration, when the voltage of a specific frequency is applied from the power converter and the induction heating coil 20 is energized, the steam generation container 10, the superheated steam generator 30, and The shield member 40 is heated by induction heating.

  Thereby, the water stored in the steam generation container 10 is heated to generate steam, and the generated steam passes upward and is discharged from the steam outlet 12a. The steam discharged from the steam outlet 12a reaches the superheated steam generator 30 after passing through the communication line 2, and is heated while passing through the superheated steam generator 30 to generate superheated steam. The generated superheated steam is discharged from the upper end outlet 32. Further, the superheated steam generator 30 and the shield member 40 are heated by induction heating outside the induction heating coil 20, thereby shielding magnetic flux leaking from the induction heating coil 20.

  According to the superheated steam generation apparatus described above, the steam generation container 10 forms a thin plate-shaped rectangular parallelepiped, so that the specific surface area of water stored therein can be increased, and the heating efficiency by the induction heating coil 20 is increased. Can be improved.

  The moisture removing member 15 is provided so as to protrude inwardly from the inner wall surface above the water level stored in the steam generation container 10, and a part thereof (the right moisture removing inclined portion 152 </ b> R and the left side is provided). Since the moisture removal inclined portion 152L) is provided so as to be inclined from the inner wall surface, as shown in FIG. 4, steam can be passed while meandering. By passing the steam while meandering in this way, the moisture contained in the generated steam can be attached to the surface of the moisture removing member 15 and the moisture can be dropped downward as water droplets, and the moisture of the passing steam is removed. can do. Thereby, the steam discharged from the steam outlet 12a becomes dry, the amount of heat given by the superheated steam generator 30 can be reduced, and the power consumption can be reduced. Moreover, since the moisture removing member 15 is provided inside the steam generation container 10, it is not necessary to install a steam / water separator as in the prior art. Therefore, the overall size of the apparatus can be suppressed while saving energy.

  According to the superheated steam generation device described above, the rectangular annular shield member 40 is installed in a manner surrounding the steam generation container 10 while being separated from the induction heating coil 20 in the upper region and the lower region of the induction heating coil 20. Therefore, the magnetic flux leaking to the upper side and the lower side of the induction heating coil 20 can be shielded. In addition, since the shield member 40 is made of a low-resistance metal, a current flows in a concentrated manner on the surface of the shield member 40 due to a magnetic field generated when a voltage is applied to the induction heating coil 20 and energized. However, the amount of generated heat can be suppressed. The shield member 40 is separate from the superheated steam generator 30 that shields the magnetic flux leaking outward from the induction heating coil 20, and does not need to communicate with the superheated steam generator 30. Therefore, the shield member 40 and the superheated steam generation unit 30 can be manufactured separately, the piping configuration can be simplified, and the manufacturing cost can be reduced. Therefore, it is possible to reduce the manufacturing cost while blocking the magnetic flux leaking up and down from the induction heating coil 20.

  According to the superheated steam generator, since the shield member 40 has a pipe structure, the material can be reduced and the manufacturing cost can be reduced.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made.

  In the above-described embodiment, the communication line 2 is disposed outside the superheated steam generation unit 30. However, in the present invention, the communication line 3 includes the steam generation container 10 and the induction heating coil 20 as shown in FIG. You may arrange | position in the aspect extended between. According to such a configuration, the communication line 3 can be heated by induction heating, and the steam discharged from the steam outlet 12a can be prevented from being cooled.

  In the embodiment described above, the shield member 40 has a rectangular ring shape. However, in the present invention, the shape is not particularly limited as long as the shield member has a ring shape. For example, the shield member 40 has a ring shape. May be.

  In the above-described embodiment, the rectangular annular shield member 40 made of copper is exemplified. However, in the present invention, the shield member 40 may have the following configuration.

  FIG. 6 is a cross-sectional view schematically showing a main part of another modified example of the superheated steam generation device according to the embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the component same as the superheated steam generation apparatus of embodiment mentioned above, and the description is abbreviate | omitted.

  As shown in FIG. 6, the superheated steam generator includes a shield member 50. A plurality of shield members 50 (two in the illustrated example) are provided, and are installed in a manner to surround the steam generation container 10 while being separated from the induction heating coil 20 in an upper region and a lower region of the induction heating coil 20. ing. These shield members 50 are made of, for example, ferrite having high magnetic permeability, and have a first shield part 51 and a second shield part 52.

  The first shield part 51 has an annular shape and surrounds the steam generation container 10. The horizontal separation distance of the first shield part 51 from the side surface of the steam generation container 10 is smaller than the horizontal separation distance between the side surface of the steam generation container 10 and the induction heating coil 20.

  The second shield part 52 extends from the outer edge part of the first shield part 51 in a manner close to the induction heating coil 20. That is, in the shield member 50 in the upper region of the induction heating coil 20, the second shield part 52 has a rectangular cross-sectional shape extending downward from the outer edge part of the first shield part 51. In the shield member 50 in the lower region of the induction heating coil 20, the second shield part 52 has a rectangular cross section extending upward from the outer edge part of the first shield part 51. In the second shield part 52, the horizontal separation distance from the side surface of the steam generation container 10 is larger than the horizontal separation distance between the side surface of the steam generation container 10 and the induction heating coil 20. That is, the second shield part 52 has a separation dimension from the side surface of the steam generation container 10 larger than a separation dimension between the side surface of the steam generation container 10 and the induction heating coil 20.

  According to such a configuration, the shield member 50 made of, for example, ferrite having high magnetic permeability can shield the magnetic flux leaking by absorbing the magnetic flux on the upper side and the lower side of the induction heating coil 20. Moreover, the shield member 50 is separate from the superheated steam generator 30 that shields the magnetic flux leaking outward from the induction heating coil 20, and does not need to communicate with the superheated steam generator 30. Therefore, the shield member 50 and the superheated steam generator 30 can be manufactured separately, the piping configuration can be simplified, and the manufacturing cost can be reduced. Therefore, it is possible to reduce the manufacturing cost while blocking the magnetic flux leaking up and down from the induction heating coil 20.

  Moreover, as shown in FIG. 7, the magnetic flux generated in the induction heating coil 20 is overheated with the steam generation container 10 → the upper shield member 50 (the first shield part 51 and the second shield part 52) → the induction heating coil 20. It is possible to effectively prevent leakage to the outside by flowing in the order of the shield member 50 (second shield part 52, first shield part 51) on the lower side between the steam generation part 30 and the lower side.

  In the example shown in FIGS. 6 and 7, the shield member 50 made of a material having high permeability (ferrite) has the first shield part 51 and the second shield part 52 integrally formed. The shield member may be arranged annularly by combining a plurality of components.

  In the embodiment described above, a part of the moisture removing member 15 is inclined from the inner wall surface of the steam generation container 10. However, in the present invention, the moisture removing member 15 protrudes inward from the inner wall surface. For example, it may not be inclined.

  In the above-described embodiment, the wire of the induction heating coil 20 is not particularly mentioned. However, in the present invention, the wire is a bundle of thin wires coated with enamel and coated with insulation, and is arranged in the length direction. You may use what was twisted.

DESCRIPTION OF SYMBOLS 1 Water supply line 2 Connection line 10 Steam generation container 11a Water supply port 12a Steam outlet 15 Moisture removal member 151R Right side moisture removal base 152R Right moisture removal inclination part 151L Left side moisture removal inclination part 152L Left moisture removal inclination part 20 Induction heating coil 30 Superheated steam generation 40 Shield member

Claims (7)

A steam generation container for storing the supplied water therein;
When the steam generation container is installed in a state of being wound in the vertical direction and is separated from the steam generation container and is energized, the steam generation container is heated by induction heating to generate steam in the steam generation container. An induction heating coil for generating
When the induction heating coil is placed in the energized state, the steam generation vessel communicates with the steam generation container and is installed separately from the induction heating coil in a mode in which the induction heating coil is wound in the vertical direction. A superheated steam generation device comprising: a superheated steam generation unit that generates superheated steam from the steam generated in the steam generation container by being heated by heating,
An overheating comprising an annular shield member made of a low-resistance metal, installed in a manner surrounding the steam generation container while being separated from the induction heating coil in an upper region and a lower region of the induction heating coil Steam generator.   The superheated steam generator according to claim 1, wherein the shield member has a pipe structure.   The superheated steam generator according to claim 1 or 2, wherein the shield member is made of copper.   4. The shield member according to claim 1, wherein a distance between the shield member and a side surface of the steam generation container is substantially equal to a distance between the side surface of the steam generation container and the induction heating coil. The superheated steam generator as described.   The superheated steam generator according to any one of claims 1 to 4, wherein the shield member is configured not to communicate with the superheated steam generator. A steam generation container for storing the supplied water therein;
When the steam generation container is installed in a state of being wound in the vertical direction and is separated from the steam generation container and is energized, the steam generation container is heated by induction heating to generate steam in the steam generation container. An induction heating coil for generating
When the induction heating coil is placed in the energized state, the steam generation vessel communicates with the steam generation container and is installed separately from the induction heating coil in a mode in which the induction heating coil is wound in the vertical direction. A superheated steam generation device comprising: a superheated steam generation unit that generates superheated steam from the steam generated in the steam generation container by being heated by heating,
In the upper region and the lower region of the induction heating coil, installed separately from the induction heating coil, and comprising a shield member made of ferrite,
The shield member is
An annular first shield portion surrounding the steam generation container;
A superheated steam generator, comprising: a second shield part extending from the outer peripheral edge of the first shield part in a manner close to the induction heating coil.   The superheated steam generation according to claim 6, wherein the second shield part has a separation distance from a side surface of the steam generation container larger than a separation dimension between the side surface of the steam generation container and the induction heating coil. apparatus.

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