WO2020079811A1 - Appareil de chauffage par induction - Google Patents

Appareil de chauffage par induction Download PDF

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Publication number
WO2020079811A1
WO2020079811A1 PCT/JP2018/038853 JP2018038853W WO2020079811A1 WO 2020079811 A1 WO2020079811 A1 WO 2020079811A1 JP 2018038853 W JP2018038853 W JP 2018038853W WO 2020079811 A1 WO2020079811 A1 WO 2020079811A1
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Prior art keywords
electrode
heated
electrodes
heating device
container
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PCT/JP2018/038853
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English (en)
Japanese (ja)
Inventor
平 和田
暁人 平井
英悟 桑田
和宏 弥政
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三菱電機株式会社
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Priority to PCT/JP2018/038853 priority Critical patent/WO2020079811A1/fr
Publication of WO2020079811A1 publication Critical patent/WO2020079811A1/fr

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/54—Electrodes

Definitions

  • the present invention relates to an induction heating device.
  • Patent Document 1 describes a device for heating and drying wood from the inside by applying a high frequency between a pair of electrodes sandwiching wood, which is an object to be heated.
  • each of the pair of electrodes has a flat plate shape, and one electrode almost covers one surface of the wood. Therefore, by applying a high frequency between the electrodes, the whole wood is uniformly heated.
  • the object to be heated is a liquid and the liquid is vaporized by dielectric heating
  • the liquid may be uniformly heated by using a flat plate-shaped electrode like the conventional device described in Patent Document 1.
  • a flat plate-shaped electrode like the conventional device described in Patent Document 1.
  • the present invention solves the above problems, and an object of the present invention is to obtain an inductive heating device that can shorten the heating time required for the object to be vaporized.
  • the dielectric heating device includes a signal source of a high frequency signal, a first electrode connected to the signal source, and a second electrode which is arranged to face the first electrode and is grounded, An object to be heated is supplied between the first electrode and the second electrode by a capillary phenomenon, and is generated between the first electrode to which a high frequency signal is applied from the signal source and the grounded second electrode. The object to be heated supplied between the first electrode and the second electrode is heated by the generated electric field.
  • the object to be heated is supplied between the first electrode and the second electrode by the capillary phenomenon, and the first electric field is generated by the electric field generated between the first electrode and the second electrode.
  • the object to be heated supplied between the electrode and the second electrode is heated. Since the object to be heated is intensively heated between the first electrode and the second electrode, the heating time required for the object to be heated to vaporize can be shortened.
  • FIG. 3 is a perspective view showing a configuration example of the dielectric heating device according to the first embodiment.
  • FIG. 3 is a front view showing a configuration example of the dielectric heating device according to the first embodiment. It is a graph which shows the relationship between the cross-sectional area of the space where the to-be-heated object moves by a capillary phenomenon, and the height of the liquid level of the to-be-heated object.
  • It is a top view which shows the modification of the dielectric heating apparatus which concerns on Embodiment 1.
  • It is a perspective view which shows the structural example of the dielectric heating apparatus which concerns on Embodiment 2.
  • It is a top view which shows the structural example of the dielectric heating apparatus which concerns on Embodiment 2.
  • FIG. 1 is a perspective view showing a configuration example of the dielectric heating device 1 according to the first embodiment.
  • the dielectric heating device 1 includes a signal source 2, an electrode 3, an electrode 4 and a container 5, and heats an object 6 to be heated by inductive heating to be vaporized.
  • Dielectric heating is a phenomenon in which electric dipoles inside a dielectric, which is the object 6 to be heated, rotate due to a high-frequency electric field, and the rotated electric dipoles cause friction to generate heat inside the dielectric.
  • dielectric loss the phenomenon in which part of the electrical energy applied to the dielectric is converted into heat energy and dissipated is called dielectric loss.
  • a member having a small dielectric loss is rarely heated by a high frequency electric field, and a member having a large dielectric loss is easily heated by a high frequency electric field.
  • the signal source 2 is a signal source that generates a high frequency signal, and has an output terminal a that outputs the high frequency signal and a ground terminal b of 0 potential.
  • the high frequency signal generated by the signal source 2 is output to the electrode 3 via the output terminal a.
  • the ground terminal b of the signal source 2 may be connected to the ground (0 potential) of the dielectric heating device 1.
  • any one of a crystal oscillator, a rubidium oscillator, a voltage controlled oscillator (VCO), a direct digital synthesizer (DDS), and a phase lock loop (PLL) circuit capable of outputting a signal of an arbitrary frequency is used. May be.
  • the oscillator used for the signal source 2 may have any configuration as long as it can generate a high-frequency signal.
  • the high-frequency signal output from the signal source 2 may be a sine wave, a rectangular wave, a continuous wave (CW) signal, or a modulated signal. .
  • the electrode 3 is a first electrode connected to the output terminal a of the signal source 2, and the electrode 4 is a second electrode arranged so as to face the electrode 3.
  • the electrode 4 is connected to the ground terminal b of the signal source 2 and grounded.
  • a metal flat plate may be used for the electrodes 3 and 4, for example.
  • the material forming the electrodes 3 and 4 may be any material that can generate a high-frequency electric field between the electrodes 3 and 4, and a plurality of materials may be used.
  • the electrodes 3 and 4 function as capacitors, and the object 6 to be heated is supplied between the electrodes 3 and 4 by a capillary phenomenon.
  • the object 6 to be heated may be any liquid that can be moved by a capillary phenomenon, and examples thereof include water and tobacco liquid.
  • the container 5 is a container for holding the object 6 to be heated.
  • the electrodes 3 and 4 are connected to the container 5 and their positions are fixed. For example, the distance between the electrodes 3 and 4 is constant, and the objects to be heated 6 are supplied only from the bottom surface side of the container 5 between the electrodes 3 and 4, so that the outer surfaces of the electrodes 3 and 4 are The wall surface of the container 5 is connected.
  • Glass may be used as the material of the container 5, for example.
  • the rectangular parallelepiped container 5 is shown in FIG. 1, it is not limited to this. If the container 5 holds the article to be heated 6 without leaking, the electrodes 3 and 4 are not short-circuited, and can withstand the heat generated between the electrodes 3 and 4, the material and shape of the container 5 are It doesn't matter. Also, a plurality of materials may be used for the container 5.
  • FIG. 2 is a front view showing a configuration example of the dielectric heating device 1 according to the first embodiment.
  • the front surface of the container 5 is transparent so that the inside of the container 5 can be visually recognized.
  • the liquid level of the object to be heated 6 supplied between the electrodes 3 and 4 is higher than the liquid level of the object to be heated 6 held in the container 5. That is, the object to be heated 6 moves from the container 5 in the direction indicated by the solid arrow in FIG. 2 by the capillary phenomenon and is supplied between the electrode 3 and the electrode 4.
  • the height h indicates the height of the liquid surface of the object to be heated 6 which is supplied from the container 5 between the electrodes 3 and 4 and rises due to the capillary phenomenon.
  • the height h of the liquid surface of the object 6 to be heated is It can be represented by (1).
  • ⁇ is the density of the object to be heated 6
  • T is the surface tension of the object to be heated 6
  • g is the gravitational acceleration
  • S is the cross-sectional area of the pipe
  • L is the length of the outer circumference of the cross-section of the pipe. Is the contact angle between the object 6 to be heated and the inner wall of the tube.
  • h TLcos ⁇ / ⁇ gS (1)
  • FIG. 3 is a graph showing the relationship between the cross-sectional area S of the tube, which is the space in which the object to be heated 6 moves due to the capillary phenomenon, and the height h of the liquid surface of the object to be heated 6, where the horizontal axis represents S and the vertical axis represents S. The axis is h.
  • ⁇ , g, T, and ⁇ are assumed to be constant values regardless of the value of the cross-sectional area S.
  • the cross-sectional area S of the tube is less than S A (S ⁇ S A )
  • the capillary phenomenon occurs and the article 6 to be heated rises in the tube.
  • the smaller the cross-sectional area S of the pipe the larger the value of h.
  • the cross-sectional area S (S ⁇ S A ) of the tube where the capillary phenomenon occurs is generally a value sufficiently smaller than the area S B.
  • the object 6 to be heated is supplied to the tube by the capillary phenomenon.
  • the strict area S B is an area obtained by removing the cross-sectional area S of the pipe from the area of the liquid surface of the object 6 to be heated in the container 5.
  • the object to be heated 6 is supplied between the electrodes 3 and 4 by the capillary phenomenon, and the object to be heated 6 is heated.
  • the height h of the liquid surface becomes larger than zero.
  • the vaporized object to be heated 6 is discharged in the direction indicated by the dashed arrow in FIG. 2, so that the object to be heated 6 existing between the electrodes 3 and 4 is reduced.
  • the object 6 to be heated is continuously supplied from the container 5 between the electrodes 3 and 4 by a capillary phenomenon so as to compensate for the released amount. Thereby, the heating and vaporization of the object 6 to be heated can be continued between the electrodes 3 and 4.
  • FIG. 4 is a top view showing a dielectric heating device 1A which is a modification of the dielectric heating device 1.
  • description of the signal source 2, the wiring that connects the signal source 2 and the electrode 3A, and the wiring that connects the signal source 2 and the electrode 4A is omitted.
  • the dielectric heating device 1A includes an electrode 3A and an electrode 4A, and the electrodes 3A and 4A are square pole-shaped electrodes.
  • the dielectric heating device 1 by narrowing the gap between the electrode 3 and the electrode 4, a cross-sectional area S in which a capillary phenomenon occurs is secured.
  • the dielectric heating device 1A secures the cross-sectional area S in which the capillary phenomenon occurs by narrowing the distance between the wall surface 5A-1 and the wall surface 5A-2 of the container 5A.
  • the object to be heated 6 is supplied to the space surrounded by the front wall surface 5A-1 and the rear wall surface 5A-2 of the electrode 3A, the electrode 4A, and the container 5A by a capillary phenomenon.
  • the object to be heated 6 existing between the electrode 3A and the electrode 4A is intensively heated, so that the heating time required for the object to be heated 6 to vaporize can be shortened.
  • the dielectric heating device 1 includes the signal source 2, the electrode 3, and the electrode 4, and the object 6 to be heated is supplied between the electrode 3 and the electrode 4 by the capillary phenomenon.
  • the object 6 to be heated supplied between the electrodes 3 and 4 is heated by the electric field generated between the electrodes 3 and 4. Since the object 6 to be heated supplied between the electrode 3 and the electrode 4 is intensively heated, the heating time required for the object 6 to be vaporized to be vaporized can be shortened. Similar effects can be obtained in the dielectric heating device 1A shown in FIG.
  • the liquid level of the heated object 6 supplied between the electrode 3 and the electrode 4 is higher than the liquid level of the heated object 6 held in the container 5.
  • the object to be heated 6 in the container 5 is continuously supplied between the electrodes 3 and 4 by a capillary phenomenon so as to compensate for the amount of the object to be heated 6 vaporized by heating.
  • the heating and vaporization of the object 6 to be heated can be continued between the electrodes 3 and 4. Similar effects can be obtained in the dielectric heating device 1A shown in FIG.
  • the cross-sectional area S of the portion where the capillary phenomenon occurs between the electrode 3 and the electrode 4 is 10 minutes of the area S B of the liquid surface of the object 6 to be heated in the container 5. Is less than or equal to 1. With this configuration, the object 6 to be heated can be supplied between the electrodes 3 and 4 by the capillary phenomenon.
  • FIG. 5 is a perspective view showing a configuration example of the dielectric heating device 1B according to the second embodiment. 5, the same components as those of FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.
  • x is the height of the electrodes 3 and 4.
  • a partition member 7 is arranged between the electrode 3 and the electrode 4 included in the dielectric heating device 1B.
  • the partition member 7 is a flat plate-shaped member, as shown in FIG.
  • the partition member 7 has a smaller dielectric loss than the object 6 to be heated, does not short-circuit the electrodes 3 and 4, and can withstand the heat generated between the electrodes 3 and 4. It is configured.
  • the material forming the partition member 7 may be a material through which the article 6 to be heated permeates, or a plurality of materials may be used. Further, although the plate-shaped partition member 7 is shown in FIG. 5, the partition member 7 may have any shape as long as it can reduce the volume occupied by the article 6 to be heated between the electrodes 3 and 4. It may have a shape other than a flat plate.
  • FIG. 6 is a top view showing a configuration example of the dielectric heating device 1B, and description of the signal source 2, the wiring connecting the signal source 2 and the electrode 3, and the wiring connecting the signal source 2 and the electrode 4 is omitted. are doing.
  • the electrodes 3 and 4 are metal parallel plates
  • the container 5 is a rectangular parallelepiped glass container.
  • the partition member 7 is a glass prismatic member. The dielectric loss of the partition member 7 is sufficiently smaller than the dielectric loss of the object 6 to be heated and can be ignored with respect to the dielectric loss of the object 6 to be heated. The object to be heated 6 and air exist inside the container 5.
  • the electrodes 3 and 4 are parallel flat plates having a height x and a width 2d, and the distance between the electrodes 3 and 4 is d.
  • the partition member 7 has a square prismatic shape with a height x and a vertical and horizontal dimensions of d.
  • Vd the volume of the object to be heated 6 that has risen in the tube due to the capillary phenomenon.
  • E the energy applied per unit volume of the article to be heated 6
  • the energy E ′ added per unit volume of the object to be heated 6 existing in the tube is the energy W stored between the electrode 3 and the electrode 4, and the above equations (5) and (8) are used. ) And can be represented by the following formula (9).
  • the configuration in which the partition member 7 is arranged between the electrodes 3 and 4 is different from the configuration in which the partition member 7 is not arranged between the electrodes 3 and 4.
  • the energy applied per unit volume of the article to be heated 6 becomes large.
  • the heating time required for the heated object 6 to vaporize can be shortened.
  • the dielectric loss of the partition member 7 is sufficiently smaller than the dielectric loss of the object 6 to be heated and can be ignored, but the dielectric loss of the partition member 7 cannot be ignored with respect to the dielectric loss of the object 6 to be heated.
  • the partition member 7 needs to be made of a material having a relative dielectric constant smaller than that of the object 6 to be heated.
  • the partition member 7 may be provided between the electrode 3A and the electrode 4A included in the dielectric heating device 1A shown in FIG.
  • the partition member 7 is arranged between the wall surface 5A-1 and the wall surface 5A-2 of the container 5A.
  • a partition member different from the partition member 7 may be provided between the electrodes 3 and 4 and the object 6 to be heated so that the object 6 to be heated does not come into contact with the electrodes 3 and 4.
  • a glass member can be used as the partition member.
  • the dielectric heating device 1B includes the partition member 7 having a smaller dielectric loss than the object 6 to be heated between the electrode 3 and the electrode 4, so that the electrode 3 and the electrode 4 are separated from each other.
  • the volume occupied by the article 6 to be heated can be reduced.
  • the energy applied per unit volume of the article to be heated 6 when an electric field is generated between the electrodes 3 and 4 is increased, so that the heating time required for the article to be heated 6 to vaporize is shortened. can do.
  • FIG. 7 is a perspective view showing a configuration example of the dielectric heating device 1C according to the third embodiment. 7, the same components as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.
  • the dielectric heating device 1C includes a signal source 2, an electrode 3, an electrode 4, a container 5 and an electrode 8.
  • the electrode 8 is a third electrode which is arranged to face the electrode 3 and is grounded.
  • the electrode 8 is a conductor that is connected to the ground terminal b of the signal source 2 and that generates an electric field between the electrode 8 and the electrode 3 to which a high-frequency signal is applied from the signal source 2.
  • the electrode 8 is connected to the container 5 and its position is fixed.
  • a metal flat plate may be used for the electrode 8, for example.
  • the material forming the electrode 8 may be any material that can generate a high-frequency electric field with the electrode 3, and a plurality of materials may be used for the electrode 8.
  • each of the electrodes 3 and 4 and the electrodes 3 and 8 functions as a capacitor, and a space between the electrodes 3 and 4 and between the electrodes 3 and 8 is heated by a capillary phenomenon.
  • the item 6 is supplied.
  • the height of the liquid surface of the object to be heated 6 supplied between the electrodes 3 and 4 and the height of the liquid surface of the object to be heated 6 supplied between the electrodes 3 and 8 are , Higher than the liquid surface of the object 6 to be heated held in the container 5. That is, in the dielectric heating device 1C, the object 6 to be heated is supplied by the capillary phenomenon into the first tube surrounded by the wall surfaces of the electrode 3, the electrode 4 and the container 5, and thus the electrode 3, the electrode 8 and the container 5 are surrounded. The object 6 to be heated is supplied by the capillary phenomenon into the second tube surrounded by the wall surface.
  • the cross-sectional area of the first tube to which the object to be heated 6 is supplied by the capillarity is 1/10 or less of the area S B of the liquid surface of the object to be heated 6 in the container 5,
  • the cross-sectional area of the second pipe to which the heating object 6 is supplied is not more than 1/10 of the area S B of the liquid surface of the heating object 6.
  • the electrodes 3, 4 and 8 are metal parallel plates, the container 5 is a rectangular parallelepiped glass container, and the heated object 6 and air are present inside the container 5.
  • a high frequency electric field is generated between the electrode 3 and the electrode 4, between the electrode 3 and the electrode 8 and in the vicinity thereof. To do. Since a high frequency signal is applied to the electrode 3 and the electrodes 4 and 8 are grounded, an electric field from the electrode 3 toward the electrodes 4 and 8 is generated.
  • FIG. 8 is a top view showing lines of electric force formed by the electric field generated between the electrodes 3 and 4 arranged in parallel.
  • the dashed arrow is the line of electric force.
  • the electrode 3 and the electrode 4 are arranged in parallel. Therefore, when a high frequency signal is applied to the electrode 3, the lines of electric force are generated from the electrode 3 toward the electrode 4. At this time, the lines of electric force are mainly generated between the electrodes 3 and 4, but some of the lines of electric force are widely generated at both ends of the electrodes 3 and 4, as shown in FIG. .
  • the density of electric lines of force indicates the strength of the electric field.
  • the electric field is strongly generated between the electrode 3 and the electrode 4, but it is also generated from both ends of the electrode 3 and the electrode 4 with a non-negligible strength. Since the object 6 to be heated is supplied between the electrodes 3 and 4, the electric field generated between the electrodes 3 and 4 is used to heat the object 6 to be heated. The electric field generated except between and is not used for heating.
  • FIG. 9 is a top view showing electric lines of force formed by electric fields generated between the electrodes 3 and 4 and between the electrodes 3 and 8 which are arranged in parallel.
  • the dashed arrow is the line of electric force.
  • the electrode 3 is arranged in parallel between the electrode 4 and the electrode 8.
  • the lines of electric force are mainly generated from the electrode 3 to the electrode 4 and from the electrode 3 to the electrode 8.
  • Some of the lines of electric force are generated at both ends of the electrodes 3 and 4, and are generated at both ends of the electrodes 3 and 8.
  • the lines of electric force generated at both ends of the electrodes 3 and 4 and both ends of the electrodes 3 and 8 shown in FIG. It is less dense than the lines of electric force generated at the ends of the electrodes 4. That is, in the dielectric heating device 1C, the electric field generated except between the electrodes is weak. Therefore, leakage of the electric field to the outside of the dielectric heating device 1C is reduced. Further, in the dielectric heating device 1C, most of the generated electric field is used for heating the object 6 to be heated, so that the heating time required for the object 6 to be vaporized to be vaporized can be shortened.
  • FIG. 7 and 9 show a configuration in which three electrodes are arranged in parallel, but in the dielectric heating device 1C according to the third embodiment, a high frequency signal is applied between two grounded electrodes.
  • a configuration in which five or more odd-numbered electrodes are arranged may be arranged so that the electrodes are arranged. For example, it is provided with five flat plate-shaped electrodes (1) to (5), and the grounded electrode (1), the electrode (2) to which a high frequency signal is applied, the grounded electrode (3) and the high frequency signal are applied. The electrode (4) and the grounded electrode (5) are arranged in this order. Even with this configuration, leakage of the electric field to the outside of the dielectric heating device 1C is reduced. Furthermore, since most of the electric field generated between the electrodes can be used for heating the object 6 to be heated, the heating time required for the object 6 to be heated to vaporize can be shortened.
  • the partition member 7 shown in the second embodiment may be arranged between the electrodes 3 and 4 and between the electrodes 3 and 8. Further, in a configuration in which an odd number of five or more electrodes are arranged so that an electrode to which a high-frequency signal is applied is arranged between two grounded electrodes, a partition member 7 is arranged between the electrodes. Good. By arranging the partition member 7 between the electrodes, the effect shown in the second embodiment can be obtained.
  • FIG. 10 is a top view showing lines of electric force formed by an electric field generated between the electrodes 3B and 4B arranged concentrically.
  • the dashed arrow is the line of electric force.
  • the cylindrical electrode 4B is arranged around the columnar electrode 3B.
  • the dielectric heating device having the electrode structure shown in FIG. 10 can utilize more of the electric field generated between the electrodes for heating the object to be heated 6 than the electrode structure shown in FIG. As a result, the heating time required for the heated object 6 to vaporize can be shortened.
  • the columnar electrode 3B and the cylindrical electrode 4B are shown in FIG. 10, the electrode 3B may be columnar and the electrode 4B may be cylindrical.
  • the electrode 3B may have a polygonal columnar shape, and the electrode 4B may have a polygonal cylindrical shape.
  • the dielectric heating device 1C may have a configuration in which an even number of four or more electrodes are concentrically arranged.
  • the cylindrical electrode (3a) to which a high frequency signal is applied and the grounded cylindrical electrode (4a) are concentrically arranged in this order. Even with this configuration, leakage of the electric field to the outside of the dielectric heating device 1C is reduced. Furthermore, since most of the electric field generated between the electrodes can be used for heating the object 6 to be heated, the heating time required for the object 6 to be heated to vaporize can be shortened.
  • the partition member 7 shown in the second embodiment may be arranged between the electrode 3B and the electrode 4B shown in FIG. Furthermore, in a configuration in which four or more even-numbered electrodes are arranged concentrically, the partition member 7 may be arranged between each electrode. By arranging the partition member 7 between the electrodes, the effect shown in the second embodiment can be obtained.
  • the coating may be applied to the electrode surface.
  • a partition member other than the partition member 7 may be provided between each electrode and the object to be heated 6 so that the object to be heated 6 does not come into contact with the electrodes.
  • a glass member can be used as the partition member.
  • the dielectric heating device 1C includes, in addition to the electrode 3 and the electrode 4, the electrode 8 that is arranged to face the electrode 3 and is grounded.
  • An object to be heated 6 is supplied between the electrodes 3 and 8 by a capillary phenomenon, and an electric field generated between the electrode 3 to which a high frequency signal is applied from the signal source 2 and the grounded electrode 8 is generated.
  • the object 6 to be heated supplied between the electrode 3 and the electrode 8 is heated.
  • leakage of the electric field to the outside of the dielectric heating device 1C is reduced.
  • most of the electric field generated between the electrodes can be used for heating the object 6 to be heated, so that the heating time required for the object 6 to be vaporized to be vaporized can be shortened.
  • FIG. 11 is a perspective view showing a configuration example of the dielectric heating device 1D according to the fourth embodiment. 11, the same components as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.
  • the dielectric heating device 1D includes a signal source 2, a container 5, an electrode 9 and an electrode 10.
  • the electrode 9 is a first electrode connected to the output terminal a of the signal source 2, and is a conductor that generates an electric field with the electrode 10.
  • the electrode 9 is connected to the container 5 and its position is fixed.
  • a metal flat plate may be used for the electrode 9, for example.
  • the material forming the electrode 9 may be any material that can generate a high-frequency electric field with the electrode 10, and a plurality of materials may be used for the electrode 9.
  • the electrode 10 is a second electrode which is arranged facing the electrode 9 and is grounded.
  • the electrode 10 is a conductor that is connected to the ground terminal b of the signal source 2 and that generates an electric field between the electrode 10 and the electrode 9 to which a high-frequency signal is applied from the signal source 2.
  • the electrode 10 is connected to the container 5 and its position is fixed.
  • a metal flat plate may be used for the electrode 10.
  • the material forming the electrode 10 may be any material that can generate a high-frequency electric field with the electrode 9, and a plurality of materials may be used for the electrode 10.
  • the electrodes 9 and 10 have a shape in which the thickness gradually increases along the direction (height direction) away from the bottom surface side of the container 5.
  • the distance between the electrodes 9 and 10 becomes narrower along the height direction of the electrodes 9 and 10. That is, the interval between the electrode 9 and the electrode 10 is partially narrowed.
  • FIG. 12 is a front view showing a configuration example of the dielectric heating device 1D according to the fourth embodiment.
  • the front surface of the container 5 is transparent so that the inside of the container 5 can be visually recognized.
  • the electrodes 9 and 10 are metal members, and the container 5 is a rectangular parallelepiped glass container.
  • the object to be heated 6 held in the container 5 moves in the direction indicated by the solid arrow by the capillary phenomenon and is supplied between the electrode 9 and the electrode 10.
  • the dashed arrow indicates the line of electric force formed by the electric field generated between the electrode 9 and the electrode 10 by applying a high frequency signal.
  • the direction toward the bottom side of the container 5 is the downward direction, and the direction away from the bottom side of the container 5 is the upward direction.
  • the density of the lines of electric force generated in the upper portion where the distance between the electrodes 9 and 10 is narrow is high. That is, since the strength of the electric field generated in the upper portion where the distance between the electrode 9 and the electrode 10 is narrow increases, the heated object 6 heated in this portion vaporizes.
  • the capacitance of a capacitor composed of two plates is proportional to the area of the plates and inversely proportional to the distance between the plates. That is, the smaller the distance between the flat plates, the larger the electrostatic capacity and the stronger the electric field.
  • the electric field strength increases in the upper portion where the distance between the electrode 9 and the electrode 10 is narrow, and the object 6 to be heated is intensively heated in this portion. As a result, the heating time required for the heated object 6 to vaporize can be shortened.
  • the dielectric heating device 1D may have a configuration in which the interval between the electrodes shown in FIG. 4, FIG. 7 or FIG. 10 is partially narrowed. Further, in an arrangement in which an odd number of electrodes of 5 or more is arranged so that an electrode to which a high frequency signal is applied is arranged between two electrodes which are grounded, the interval between the electrodes is partially narrowed. Good. Further, in the dielectric heating device 1D, in a configuration in which four or more even-numbered electrodes are arranged concentrically, the interval between the electrodes may be partially narrowed.
  • the object to be heated 6 supplied to the portion where the interval between the electrodes is narrow is intensively heated by the capillary phenomenon, so that the heating time required for the object to be heated 6 to be vaporized is shortened. be able to.
  • the partition member 7 shown in the second embodiment is arranged between the electrodes, so that the effect shown in the second embodiment can be obtained.
  • a deterioration preventing coating may be applied to the electrode surfaces.
  • a partition member other than the partition member 7 may be provided between each electrode and the object to be heated 6 so that the object to be heated 6 does not come into contact with the electrodes.
  • a glass member can be used as the partition member.
  • the gap between the electrode 9 and the electrode 10 is partially narrowed.
  • the object 6 to be heated is intensively heated at a place where the interval between the electrodes is narrow, and thus the heating time required for the object 6 to be heated to be vaporized can be shortened.
  • the gap between the electrodes is partially narrowed, and the portion that narrows the gap is not limited to the upper portion.
  • the interval between the electrodes may be narrowed in the lower part, or may be narrowed in the middle part between the lower side and the upper side.
  • the object 6 to be heated is intensively heated in the portion where the distance between the electrodes is narrow, so that the heating time required until the object 6 to be heated is vaporized can be shortened.
  • the dielectric heating device can shorten the heating time until the object to be heated is vaporized, it can be used for various devices that heat a liquid object to be heated to generate an aerosol.
  • 1, 1A, 1B, 1C, 1D dielectric heating device 2 signal sources, 3, 3A, 3B, 4, 4A, 4B, 8, 9, 10 electrodes, 5, 5A container, 5A-1, 5A-2 wall surface, 6 objects to be heated, 7 partition members.

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Abstract

L'invention concerne un dispositif de chauffage par induction (1), la matière à chauffer (6) étant alimentée entre une électrode (3) et une électrode (4) par un phénomène capillaire, et la matière à chauffer (6), alimentée entre l'électrode (3) et l'électrode (4), étant chauffée par un champ électrique produit entre l'électrode mise à la terre (4) et l'électrode (3) à laquelle un signal haute fréquence est appliqué à partir d'une source de signal (2).
PCT/JP2018/038853 2018-10-18 2018-10-18 Appareil de chauffage par induction WO2020079811A1 (fr)

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JP2023507913A (ja) * 2020-11-25 2023-02-28 オーサム ラボ カンパニー，リミテッド 電極発熱体及びこれを含む電極発熱デバイスと、これに適用される漏電防止制御方法

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JPS50134146U (fr) * 1974-04-19 1975-11-05
JPS5522003U (fr) * 1978-07-28 1980-02-13
CN1198522A (zh) * 1997-05-05 1998-11-11 郝武斌 电离式多孔陶瓷瞬间蒸汽发生板
JP2003307345A (ja) * 2002-04-17 2003-10-31 Japan Science & Technology Corp 同軸円筒内の振動電場による熱湯発生装置
WO2017143515A1 (fr) * 2016-02-23 2017-08-31 Fontem Holdings 1 B.V. Générateur d'aérosol à polarisation haute fréquence
KR20180111347A (ko) * 2017-03-31 2018-10-11 (주) 엔피홀딩스 액체가열장치

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JPS50134146U (fr) * 1974-04-19 1975-11-05
JPS5522003U (fr) * 1978-07-28 1980-02-13
CN1198522A (zh) * 1997-05-05 1998-11-11 郝武斌 电离式多孔陶瓷瞬间蒸汽发生板
JP2003307345A (ja) * 2002-04-17 2003-10-31 Japan Science & Technology Corp 同軸円筒内の振動電場による熱湯発生装置
WO2017143515A1 (fr) * 2016-02-23 2017-08-31 Fontem Holdings 1 B.V. Générateur d'aérosol à polarisation haute fréquence
KR20180111347A (ko) * 2017-03-31 2018-10-11 (주) 엔피홀딩스 액체가열장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023507913A (ja) * 2020-11-25 2023-02-28 オーサム ラボ カンパニー，リミテッド 電極発熱体及びこれを含む電極発熱デバイスと、これに適用される漏電防止制御方法
JP7319002B2 (ja) 2020-11-25 2023-08-01 オーサム ラボ カンパニー，リミテッド 電極発熱体及びこれを含む電極発熱デバイスと、これに適用される漏電防止制御方法

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