WO2023002855A1 - 加熱装置 - Google Patents

加熱装置 Download PDF

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Publication number
WO2023002855A1
WO2023002855A1 PCT/JP2022/026963 JP2022026963W WO2023002855A1 WO 2023002855 A1 WO2023002855 A1 WO 2023002855A1 JP 2022026963 W JP2022026963 W JP 2022026963W WO 2023002855 A1 WO2023002855 A1 WO 2023002855A1
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WO
WIPO (PCT)
Prior art keywords
heat insulating
insulating member
metal plate
heating device
heating
Prior art date
Application number
PCT/JP2022/026963
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
良彦 木佐木
Original Assignee
京セラ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京セラ株式会社 filed Critical 京セラ株式会社
Priority to CN202280048189.4A priority Critical patent/CN117652203A/zh
Priority to JP2023536686A priority patent/JP7671850B2/ja
Publication of WO2023002855A1 publication Critical patent/WO2023002855A1/ja

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Classifications

    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater

Definitions

  • the present disclosure relates to a heating device.
  • the heating device can be used, for example, to heat a mold for processing metal, glass, resin, or the like.
  • Patent Document 1 discloses a heating plate, a cartridge heater inserted into the inside from the side of the heating plate, a top plate arranged above the upper heating plate, and a heater arranged below the lower heating plate.
  • a heating device is described that includes a floor plate that is in contact with the heating plate, and insulation provided between the upper heating plate and the top plate and between the lower heating plate and the floor plate.
  • the cartridge heater is positioned along one direction parallel to the heating surface of the heating plate. Since the distribution of the cartridge heaters inside the heating plate is not uniform in this way, there is a possibility that the temperature of the heating surface of the heating plate may vary.
  • a heating device of the present disclosure includes a metal plate and a plurality of heaters.
  • the metal plate has a first surface that is a heating surface, a second surface that is opposite to the first surface and has a plurality of recesses, and a third surface that is connected to each of the first surface and the second surface. have.
  • a plurality of heaters are positioned in each of the plurality of recesses.
  • the heating device according to the present disclosure comprises a first insulating member. The first heat insulating member surrounds the metal plate facing the third surface.
  • FIG. 1 is a cross-sectional view showing an example of a heating device.
  • FIG. 2 is a cross-sectional view showing another example of the heating device.
  • FIG. 3 is an enlarged cross-sectional view of the heating device shown in FIG. 2 taken along line A-A'.
  • FIG. 4 is a cross-sectional view showing another example of the heating device.
  • FIG. 5 is a cross-sectional view showing another example of the heating device.
  • FIG. 6 is a cross-sectional view showing another example of the heating device.
  • FIG. 7 is a cross-sectional view showing another example of the heating device.
  • FIG. 8 is a cross-sectional view showing another example of the heating device.
  • the heating device 100 will be explained in detail.
  • FIG. 1 is a cross-sectional view showing an example of the heating device 100.
  • the heating device 100 is made of metal having a first main surface (an example of the first surface) which is a heating surface 11 and a second main surface (an example of the second surface) having a plurality of recesses 12. It comprises a plate 1 , a plurality of heaters 2 respectively positioned in a plurality of recesses 12 , and a first heat insulating member 3 positioned laterally of the metal plate 1 .
  • the metal plate 1 is a member for supporting the mold.
  • the metal plate 1 may be a plate-like or cylindrical member having a first main surface and a second main surface.
  • a metal plate 1 shown in FIG. 1 is a plate-like member.
  • the metal plate 1 has a metal material.
  • the metal plate 1 is made of, for example, a metal mainly composed of iron such as SUS (stainless steel), KOVAR (kovar), or invar, a metal mainly composed of nickel such as Inconel, or a metal such as Ti (titanium), copper, brass, chromium alloy, or the like. It has metal material.
  • the metal plate 1 may have a length of 10 to 500 mm and a thickness of 1 to 100 mm, for example.
  • the first main surface of the metal plate 1 is the heating surface 11.
  • a heating surface 11 of the metal plate 1 is located on an upper surface that can come into contact with the mold.
  • the second main surface of metal plate 1 may, for example, be located opposite the first main surface.
  • the second main surface of metal plate 1 has a plurality of recesses 12 .
  • the plurality of recesses 12 may have, for example, a bottom surface and side surfaces.
  • the bottom surface of the recess 12 may be circular or rectangular, for example.
  • the depth of the recess 12 can be 0.5 mm to 90 mm.
  • the width of the recess 12 can be 0.5 to 100 mm in diameter when the bottom surface is circular. Further, the shapes of the bottom surfaces of the plurality of recesses 12 may be the same, for example. Also, the shapes of the bottom surfaces of the plurality of recesses 12 may be different from each other. Moreover, the depths of the plurality of recesses 12 may be different from each other.
  • the "upper surface” referred to in the specification of the present application means the surface on which the heating surface 11 is positioned when viewed from the heater 2.
  • the “lower surface” means the surface on which the heater 2 is positioned when viewed from the heating surface 11 .
  • the terms “upper surface” and “lower surface” used in the specification of the present application are used for ease of understanding of the positional relationship, and do not limit the embodiments. For example, it is assumed that the heating device 100 shown in the drawing can be carried out in a tilted state.
  • the metal plate 1 may be integrally formed, or may be formed separately and fixed by joining or the like.
  • the metal plate 1 has a first portion having a plurality of recesses 12 and a second portion having a plurality of through-holes, which are overlapped and fixed such that the respective recesses 12 and through-holes are continuous. good too.
  • the heater 2 is a member for generating heat when current flows.
  • the heaters 2 are positioned in a plurality of recesses 12 on the second main surface, as shown in FIG.
  • the heating device 100 has a plurality of heaters 2 .
  • the plurality of heaters 2 are positioned in the plurality of recesses 12, respectively.
  • the heater 2 may be, for example, a ceramic heater composed of a ceramic body having a heating resistor inside.
  • the heater 2 may be a cartridge heater having a heating element and ceramic material in a metal tube.
  • the shape of the heater 2 may be, for example, a bar shape such as a round bar shape or a square bar shape, or a plate shape.
  • the heating resistor When the heater 2 has a heating resistor inside, the heating resistor may have, for example, a folded shape. Also, the heating resistor may be a pair of linear portions on the rear end side of the folded portion.
  • the heating pattern of the heating resistor may be, for example, a pattern in which the folded portion is repeatedly folded back only on the leading end side, and may be a pattern that repeatedly reciprocates between the leading end side and the trailing end side.
  • the rear end side of the heater 2 is connected to an external power source.
  • the rear end side of the heater 2 may be fixed by a member such as a support, for example.
  • the heating resistor has a metal material.
  • Metal materials include, for example, tungsten, molybdenum or rhenium.
  • the heating resistor may have an insulating member. Thereby, the resistance value of the heating resistor can be adjusted.
  • the heating resistor may be arranged so that the heating surface 11 of the metal plate 1 generates the most heat.
  • the heating resistor may, for example, have its folded portion located in the concave portion 12 .
  • the ceramic body may have an insulating ceramic material.
  • the ceramic body may comprise an insulating ceramic material such as alumina, silicon nitride or aluminum nitride.
  • the dimensions of the ceramic body can be, for example, a length of 1 to 200 mm and an outer diameter of 0.5 to 100 mm when the ceramic body is cylindrical.
  • the ceramic body may have a length of 1 to 200 mm, an outer diameter of 0.5 to 100 mm, and an inner diameter of 0.2 to 90 mm.
  • the second main surface of the metal plate 1 has a plurality of recesses 12 and a plurality of heaters 2 are positioned in each of the plurality of recesses 12 .
  • the variation in temperature on the heating surface 11 can be reduced compared to the case where the heater 2 is inserted in the direction parallel to the heating plate as in the heating device 100 described in Patent Document 1.
  • the heat uniformity of the heating device 100 can be improved.
  • the first heat insulating member 3 is a member for preventing heat from the heater 2 from being transmitted to the outside.
  • the first heat insulating member 3 is positioned laterally of the metal plate 1 .
  • the first heat insulating member 3 surrounds the metal plate 1 while facing the side surface of the metal plate 1 .
  • the side surface of the metal plate 1 is an example of a third surface connected to each of the first surface and the second surface of the metal plate 1 .
  • the first heat insulating member 3 may comprise ceramic, glass, metal, for example.
  • the first heat insulating member 3 preferably has a lower thermal conductivity than the metal plate 1 .
  • the first heat insulating member 3 may comprise a ceramic material, for example aluminum oxide, silicon nitride or aluminum nitride.
  • the first heat insulating member 3 is preferably a fibrous ceramic member having gaps inside, such as porous or cotton. As a result, it is possible to make the member less likely to be distorted due to external temperature changes. As a result, durability can be improved.
  • the first heat insulating member 3 may have a gap between it and the metal plate 1 when the heating device 100 is viewed from a direction perpendicular to the heating surface 11 of the metal plate 1 .
  • the first heat insulating member 3 may be fixed to the metal plate 1 by another member such as a bonding material.
  • the shape of the first heat insulating member 3 may be plate-like, ring-like, or film-like, for example. Moreover, when the metal plate 1 is in the shape of a plate having a rectangular main surface, for example, the first heat insulating member 3 may cover the sides of the metal plate 1 . As a result, the risk of heat escaping from the metal plate 1 can be further reduced. Moreover, the first heat insulating member 3 may cover all four side surfaces (an example of the third surface) of the metal plate 1 . As a result, the risk of heat escaping from the metal plate 1 can be further reduced. Moreover, the first heat insulating member 3 may be a plurality of plate-shaped members, and may have an annular structure as a whole by covering the entire side surface of the metal plate 1 .
  • the first heat insulating member 3 is positioned laterally of the metal plate 1 .
  • the heater 2 is positioned in the concave portion 12 provided on the inner periphery of the metal plate 1, so that the heat of the heater 2 is transferred to the heating surface 11, and the heat escaping from the side of the metal plate 1 is transferred to the first heating surface. 1 can be suppressed by the heat insulating member 3 .
  • the heat uniformity of the heating surface 11 of the metal plate 1 can be improved.
  • a frame member 4 positioned on the side of the first heat insulating member 3 and covering the first heat insulating member 3 may be provided.
  • the area where the 1st heat insulation member 3 is exposed can be made small. Therefore, it is possible to reduce the risk that the first heat insulating member 3 will deteriorate over time due to long-term use.
  • the frame member 4 is a member for protecting the first heat insulating member 3.
  • the frame member 4 is positioned on the side of the first heat insulating member 3, as shown in FIG. Moreover, the frame member 4 is positioned so as to cover the first heat insulating member 3 .
  • the frame member 4 may comprise ceramic, glass, metal, for example.
  • the shape of the frame member 4 may be, for example, a plate shape, a cylindrical shape, or a rectangular tube shape. Further, for example, when the main surface of the metal plate 1 is square and the first heat insulating member 3 covers the side of the metal plate 1, the frame member 4 covers the side of the first heat insulating member 3. good too.
  • the width can be 10 to 500 mm and the thickness can be 0.3 to 20 mm.
  • the recesses 12 are evenly positioned along the length of the second main surface of the metal plate 1 . Also, the number of recesses may be greater than shown in FIG.
  • the heating device 100 has a first fixing member 5 which penetrates the frame member 4 and the first heat insulating member 3 and fixes the frame member 4 and the metal plate 1.
  • a first fixing member 5 which penetrates the frame member 4 and the first heat insulating member 3 and fixes the frame member 4 and the metal plate 1.
  • the first fixing member 5 is a member for fixing the frame member 4 and the first heat insulating member 3 to the metal plate 1 .
  • the shape of the first fixing member 5 may be, for example, a rod-like shape having a longitudinal direction or a cylindrical shape.
  • the first fixing member 5 may have, for example, a screw-like portion, and the metal plate 1, the first fixing member 5, and the first heat insulating member 3 may have screw holes.
  • the frame member 4 and the first heat insulating member 3 may be fixed to the metal plate 1 by inserting the screw-like portions of the first fixing member 5 into the screw holes.
  • the first fixing member 5 may comprise, for example, ceramic, glass, metal, or the like.
  • the first fixing member 5 may be fixed to the frame member 4 and the first heat insulating member 3 with a bonding material such as brazing material. Also, the first fixing member 5 may be fixed to the frame member 4 and the first heat insulating member 3 by crimping, for example.
  • the first fixing member 5 is rod-shaped with its longitudinal direction, it can have a length of 3 to 100 mm and an outer diameter of 1 to 10 mm, for example.
  • the first fixing member 5 may be inserted perpendicularly to the side surface of the metal plate 1 . Accordingly, since the first fixing member 5 is inserted in the direction in which the metal plate 1 thermally expands, the stress generated between the first fixing member 5 and the metal plate 1 can be dispersed.
  • the heating device 100 may have a spacer 6 located between the frame member 4 and the metal plate 1.
  • the spacer 6 may be positioned between the first heat insulating member 3 and the metal plate 1, for example.
  • the frame member 4 and the metal plate 1 can be fixed with a predetermined gap. Therefore, it is possible to reduce the possibility that the heat uniformity is deteriorated due to the gap between the frame member 4 and the metal plate 1 .
  • the shape of the spacer 6 is, for example, plate-like, rod-like or annular. Moreover, the spacer 6 may be positioned so as to surround at least a portion of the outer circumference of the first fixing member 5 when the first fixing member 5 is a member having a longitudinal direction, for example.
  • Spacer 6 may comprise a metallic material, ceramic or glass.
  • Metal materials include, for example, metals mainly composed of iron such as SUS (stainless steel), KOVAR (kovar), and invar, metals mainly composed of nickel such as Inconel, and metal materials such as titanium, copper, brass, and chromium alloys. may have.
  • the spacer 6 when the spacer 6 is annular so as to surround the outer periphery of the first fixing member 5, it can have an outer diameter of 2 to 20 mm, an inner diameter of 1 to 10 mm, and a thickness of 0.5 to 5 mm.
  • the spacer 6 is an annular member, and the inner peripheral surface of the spacer 6 and the outer peripheral surface of the first fixing member 5 may be in contact with each other. Thereby, it is possible to suppress the first fixing member 5 from moving in the direction perpendicular to the longitudinal direction. As a result, durability of the heating device 100 can be improved.
  • the heating surface 11 may be positioned above the first heat insulating member 3.
  • the metal plate 1 can be positioned between the first heat insulating member 3 and the mold.
  • the reliability of the heating device 100 can be enhanced.
  • the heating surface 11 is located above the first heat insulating member 3, for example, when looking at a cross section perpendicular to the heating surface 11 as shown in FIG. part) may be located below the heating surface 11 .
  • the metal plate 1 may have the second main surface area smaller than the heating surface 11 area, and may have the first heat insulating member 3 at a position surrounding the second main surface.
  • the metal plate 1 may have a recessed portion 12 or a counterbore on the side surface, and the first heat insulating member 3 may be provided in the recessed portion 12 or the counterbore.
  • the metal plate 1 has a plate-like first portion and a second portion, respectively, and the lower surface of the first portion is in contact with the entire upper surface of the second portion.
  • the first heat insulating member 3 may be positioned in the space sandwiched between the side surfaces of the second portion. At this time, the first heat insulating member 3 may be in contact with the lower surface of the first portion and the side surface of the second portion, respectively, or may be positioned with a gap from the lower surface of the first portion.
  • “above” as used in the specification of the present application means the direction in which the heating surface 11 is positioned when viewed from the heater 2 .
  • “Above” as used herein may be directly above.
  • “Below” means the direction in which the heater 2 is positioned when viewed from the heating surface 11 .
  • “Lateral” means a direction parallel to the heating surface 11 and from the inside to the outside of the heating device 100 .
  • the terms “upper”, “lower” and “lateral” used in this specification are used for ease of understanding of the positional relationship, and do not limit the embodiments. For example, it is assumed that the heating device 100 shown in the drawing can be carried out in a tilted state.
  • the upper end (an example of the end portion) of the frame member 4 may be positioned above the upper end of the first heat insulating member 3 .
  • the “upper end” referred to here means the portion of the first heat insulating member 3 located at the highest position.
  • the heating surface 11 may extend outside the frame member 4 and may be positioned above the frame member 4 .
  • the metal plate 1 can be positioned between the frame member 4 and the mold.
  • the heating device 100 may further include a second heat insulating member 7 in contact with the second main surface.
  • a second heat insulating member 7 in contact with the second main surface.
  • the second heat insulating member 7 is a member for preventing heat from the heater 2 from being transmitted to the outside.
  • the second heat insulating member 7 is in contact with the second main surface of the metal plate 1 .
  • the second insulation member 7 may for example comprise ceramic, glass or metal.
  • the second heat insulating member 7 is preferably a fibrous ceramic member having gaps inside, such as porous or cotton. As a result, it is possible to make the member less likely to be distorted due to external temperature changes. As a result, durability can be improved. Moreover, even if the second heat insulating member 7 has a gap between the metal plate 1 and the second heat insulating member 7 when the heating device 100 is viewed from the direction perpendicular to the heating surface 11 of the metal plate 1, good.
  • the shape of the second heat insulating member 7 may be, for example, a plate shape.
  • the dimensions of the second heat insulating member 7 can be, for example, a width of 10 to 500 mm and a thickness of 0.3 to 20 mm when it is a plate-like member.
  • the heating device 100 may have a plate-like support plate 8 that is in contact with the second heat insulating member 7 .
  • the support plate 8 is a member for fixing the second heat insulating member 7 .
  • the support plate 8 has a metal material.
  • the shape of the support plate 8 may be, for example, a square plate shape or a disk shape.
  • the support plate 8 may comprise ceramic, glass, metal, for example.
  • the dimensions of the support plate 8, in the case of a plate-like shape, are 10 to 500 mm in length, 10 to 500 mm in width, and 0.3 to 30 mm in thickness.
  • the heating device 100 may have a second fixing member 9 that fixes the frame member 4 and the support plate 8 .
  • the frame member 4 and the support plate 8 can be firmly fixed.
  • durability can be improved.
  • the second fixing member 9 is a member for fixing the frame member 4 and the support plate 8.
  • the shape of the second fixing member 9 may be, for example, a rod-like shape having a longitudinal direction or a cylindrical shape.
  • the second fixing member 9 has, for example, a screw-like portion, the frame member 4 and the support plate 8 have screw holes, and the screw-like portions of the second fixing member 9 are inserted into the screw holes.
  • the frame member 4 and the support plate 8 may be fixed by being held together.
  • the second fixing member 9 may have, for example, ceramic, glass, metal, or the like. Further, the second fixing member 9 may be fixed to the frame member 4 and the support plate 8 with a bonding material such as brazing material.
  • the second fixing member 9 may be fixed to the frame member 4 and the support plate 8 by caulking, for example.
  • the second fixing member 9 is rod-shaped having a longitudinal direction, it can have a length of 3 to 100 mm and an outer diameter of 1 to 10 mm, for example.
  • the first heat insulating member 3 and the second heat insulating member 7 may be in contact with each other. Thereby, the first heat insulating member 3 and the second heat insulating member 7 can be connected continuously. Thereby, the possibility that the heat of the metal plate 1 is transferred to the support plate 8 can be reduced. As a result, the reliability of the heating device 100 can be improved.
  • the support plate 8 may be in contact with the frame member 4.
  • heat can be easily transferred from the support plate 8 to the outside of the heating device 100 via the frame member 4 at the portion where the support plate 8 and the frame member 4 are in contact with each other.
  • it is possible to increase the heat dissipation of the heating device 100 as a whole while increasing the heating efficiency.
  • durability of the heating device 100 can be improved.
  • the lower end of the first heat insulating member 3 may be positioned above the support plate 8. This reduces the possibility that the heat of the metal plate 1 escapes below the support plate 8 via the first heat insulating member 3 . As a result, the heat uniformity of the heating device 100 can be improved.
  • Second fixing member 100 Heating device

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  • Resistance Heating (AREA)
PCT/JP2022/026963 2021-07-20 2022-07-07 加熱装置 WO2023002855A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280048189.4A CN117652203A (zh) 2021-07-20 2022-07-07 加热装置
JP2023536686A JP7671850B2 (ja) 2021-07-20 2022-07-07 加熱装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021119802 2021-07-20
JP2021-119802 2021-07-20

Publications (1)

Publication Number Publication Date
WO2023002855A1 true WO2023002855A1 (ja) 2023-01-26

Family

ID=84979169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/026963 WO2023002855A1 (ja) 2021-07-20 2022-07-07 加熱装置

Country Status (3)

Country Link
JP (1) JP7671850B2 (en, 2012)
CN (1) CN117652203A (en, 2012)
WO (1) WO2023002855A1 (en, 2012)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357894U (en, 2012) * 1989-10-12 1991-06-04
JPH04154073A (ja) * 1990-10-17 1992-05-27 Yoshino Kogyosho Co Ltd ヒーターブロック
JPH06117654A (ja) * 1992-10-06 1994-04-28 Toshiba Corp 輻射パネル
JPH11339936A (ja) * 1998-05-29 1999-12-10 Nissei Denki Kk 面状ヒータ成形体
JP2005166368A (ja) * 2003-12-01 2005-06-23 Ngk Insulators Ltd 加熱装置
JP2016207595A (ja) * 2015-04-28 2016-12-08 日本特殊陶業株式会社 加熱装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357894U (en, 2012) * 1989-10-12 1991-06-04
JPH04154073A (ja) * 1990-10-17 1992-05-27 Yoshino Kogyosho Co Ltd ヒーターブロック
JPH06117654A (ja) * 1992-10-06 1994-04-28 Toshiba Corp 輻射パネル
JPH11339936A (ja) * 1998-05-29 1999-12-10 Nissei Denki Kk 面状ヒータ成形体
JP2005166368A (ja) * 2003-12-01 2005-06-23 Ngk Insulators Ltd 加熱装置
JP2016207595A (ja) * 2015-04-28 2016-12-08 日本特殊陶業株式会社 加熱装置

Also Published As

Publication number Publication date
CN117652203A (zh) 2024-03-05
JPWO2023002855A1 (en, 2012) 2023-01-26
JP7671850B2 (ja) 2025-05-02

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