WO2023210434A1 - 加熱装置 - Google Patents
加熱装置 Download PDFInfo
- Publication number
- WO2023210434A1 WO2023210434A1 PCT/JP2023/015380 JP2023015380W WO2023210434A1 WO 2023210434 A1 WO2023210434 A1 WO 2023210434A1 JP 2023015380 W JP2023015380 W JP 2023015380W WO 2023210434 A1 WO2023210434 A1 WO 2023210434A1
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- WIPO (PCT)
- Prior art keywords
- heating
- heaters
- recess
- plate
- heating device
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
-
- 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
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
-
- 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
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
Definitions
- the disclosed embodiments relate to a heating device.
- a heating plate has a plurality of cartridge heaters each inserted into a plurality of recesses formed on the back surface located on the opposite side of the heating surface, and the object is heated by bringing the object into contact with the heating plate.
- a heating device is known (see Patent Document 1).
- a heating device includes a heating plate and a plurality of heaters.
- the heating plate has a heating surface and a plurality of recesses on the back surface opposite to the heating surface.
- the plurality of heaters are located in each of the plurality of recesses.
- Each heater has a columnar main body and a meandering wiring part inside the main body in the longitudinal direction.
- the wiring part has a plurality of folded parts. The folded portion located on the distal end side of the main body portion is located within the recess.
- FIG. 1 is a side view of the heating device according to the embodiment viewed from the negative direction of the Y-axis.
- FIG. 2 is a sectional view of the heater according to the embodiment.
- FIG. 3 is a plan view of the heating device according to the embodiment viewed from the positive direction of the Z-axis.
- FIG. 4 is a sectional view taken along the line IV-IV shown in FIG. 3.
- FIG. 5 is a cross-sectional view taken along line VV shown in FIG. 3.
- FIG. 6 is a side view of the heating device according to the embodiment viewed from the negative direction of the X-axis.
- FIG. 7 is a cross-sectional view taken along the line VII-VII shown in FIG. FIG.
- FIG. 8 is a schematic diagram for explaining an example of the positional relationship between the folded portions of each heating resistor of a plurality of heaters and each recessed portion of a heating plate.
- FIG. 9 is a cross-sectional view taken along the line IX-IX shown in FIG.
- FIG. 10 is a diagram showing another shape of the recess.
- FIG. 11 is a diagram showing another shape of the recess.
- FIG. 12 is a diagram showing another shape of the recess.
- FIG. 13 is a schematic diagram for explaining another example of the positional relationship between the folded portions of each heating resistor of a plurality of heaters and each recessed portion of a heating plate.
- FIG. 14 is a schematic diagram for explaining another example of the positional relationship between the connection portion between the heating resistor and the lead wiring and each recessed portion of the heating plate.
- FIG. 15 is a diagram showing another example of the insertion mode of the heater according to the embodiment.
- each of the drawings referred to below shows an orthogonal coordinate system in which the X-axis direction, Y-axis direction, and Z-axis direction that are orthogonal to each other are defined, and the positive Z-axis direction is the vertically upward direction. There are cases.
- FIG. 1 is a side view of a heating device 100 according to an embodiment viewed from the negative direction of the Y-axis.
- the heating device 100 when the heating device 100 is brought into contact with the object to be heated, the surface located on the side of the object to be heated is the "upper surface", and the surface located on the opposite side from the object to be heated is the “lower surface”. .
- the heating device 100 is not limited to this, and may be used upside down, for example, or may be used in any position.
- the heating device 100 shown in FIG. 1 includes a heating plate 110, a fixture 120, a plurality of heaters 130, and a support plate 150.
- the heating device 100 also includes a plurality of anode-side collective electrodes 160, a plurality of cathode-side collective electrodes 170, and a plurality of insulating members 180.
- the heating plate 110 is, for example, a metal plate member.
- the heating plate 110 has an upper surface 110a that can come into contact with an object to be heated. That is, the upper surface 110a of the heating plate 110 becomes a heating surface that heats the object to be heated.
- the upper surface 110a is used, for example, to heat a mold as an example of an object to be heated.
- a plurality of recesses 113 (see FIGS. 3, 5, etc.) into which a plurality of heaters 130 are respectively inserted are formed on the lower surface 110b of the heating plate 110 on the opposite side from the heating surface.
- the plurality of heaters 130 are inserted into the plurality of recesses 113, respectively. Thereby, the plurality of heaters 130 are arranged perpendicularly to the upper surface 110a of the heating plate 110, which is a heating surface. In this way, by arranging the plurality of heaters 130 perpendicularly to the heating surface of the heating plate 110, variations in the distance between the plurality of heaters 130 and the heating surface are reduced. It is possible to improve heat uniformity within the chamber. Further, in the heater 130, a temperature distribution occurs in the longitudinal direction.
- FIG. 2 is a cross-sectional view of the heater 130 according to the embodiment.
- the heater 130 includes a heater main body 131, a cover member 132, an anode lead electrode 133, and a cathode lead electrode 134.
- the heater main body 131 is a ceramic heater.
- the heater main body 131 has a rectangular plate shape in a cross-sectional view perpendicular to the X-axis direction, and has a distal end portion 130a and a proximal end portion 130b.
- the heater main body 131 is inserted into the recess 113 from the tip 130a side.
- the heater main body 131 has a heating resistor 135 (an example of a wiring part) and lead wires 136 and 137 (an example of a lead wire part) inside a ceramic body.
- a heating resistor 135 an example of a wiring part
- lead wires 136 and 137 an example of a lead wire part
- the heating resistor 135 has a meandering wiring pattern that is repeatedly folded back between the distal end 130a side and the base end 130b side of the heater main body 131.
- the heat generating resistor 135 includes a plurality of linear parts 135a extending along the longitudinal direction (here, the Z-axis direction) of the heater main body 131, and two adjacent linear parts 135a on the distal end side and the proximal end side of the heater main body 131. It has folded parts 135b and 135c that connect the two straight parts 135a.
- a lead wiring 136 is connected to one end of the heating resistor 135, and a lead wiring 137 is connected to the other end of the heating resistor 135.
- the length of the heater body 131 that is, the length of the ceramic body, can be, for example, approximately 1 mm or more and 200 mm or less. Further, the outer dimensions of the ceramic body can be, for example, about 0.5 mm or more and 100 mm or less.
- the shape of the heater body 131 is, for example, prismatic.
- the shape of the heater main body 131 is not limited to a prismatic shape, and may be, for example, a cylindrical shape or an elliptical column shape.
- the cylindrical or elliptical shape of the heater main body 131 includes one in which the center is hollowed out to form a cylindrical shape.
- the material of the ceramic body is, for example, an insulating ceramic.
- oxide ceramics, nitride ceramics, carbide ceramics, etc. can be used as the material of the ceramic body.
- the heating resistor 135 is a member that generates heat when a current flows therethrough.
- the heating resistor 135 is connected at one end to a pad portion 133a of an anode side lead electrode 133, which will be described later, via a lead wire 136. Further, the other end of the heating resistor 135 is connected to a pad portion 134a of a cathode-side lead electrode 134, which will be described later, via a lead wire 137.
- the heating resistor 135 may include, for example, a high-resistance conductor containing tungsten, molybdenum, or the like.
- the dimensions of the heating resistor 135 can be, for example, a width of 0.1 mm or more and 5 mm or less, a thickness of 0.05 mm or more and 0.3 mm or less, and a total length of 1 mm or more and 500 mm or less.
- the heating resistor 135 may be made of conductive ceramics containing tungsten carbide, for example. In this case, the difference in thermal expansion between the ceramic body and the heating resistor 135 can be reduced. Thereby, thermal stress between the ceramic body and the heating resistor 135 can be reduced. As a result, the durability of the heater main body 131 can be improved.
- the lead wiring 136 connects one end of the heat generating resistor 135 and the pad portion 133a of the anode side lead electrode 133.
- the lead wiring 137 connects the other end of the heating resistor 135 and the pad portion 134a of the cathode side lead electrode 134.
- the lead wires 136 and 137 may include, for example, a high-resistance conductor containing tungsten, molybdenum, etc., similarly to the heating resistor 135. Furthermore, the lead wires 136 and 137 may be made of conductive ceramics containing tungsten carbide, for example. The lead wires 136 and 137 are wider than the heating resistor 135. Thereby, the electrical resistance value of the lead wires 136 and 137 can be made smaller than the electrical resistance value of the heating resistor 135. As a result, the amount of heat generated in the lead wires 136 and 137 can be reduced.
- the cover member 132 has a cylindrical shape surrounding the outer peripheral surface of the heater main body 131.
- the cover member 132 is located at a position corresponding to the pad portion 133a of the anode-side lead electrode 133 and the pad portion 134a of the cathode-side lead electrode 134 in the longitudinal direction of the heater main body 131 (here, the Z-axis direction).
- the cover member 132 covers the pad portion 133a of the anode-side lead electrode 133 and the pad portion 134a of the cathode-side lead electrode 134.
- a space formed by the inner peripheral surface of the cover member 132 is filled with a bonding material 132a for bonding the cover member 132 and the heater main body 131.
- the cover member 132 is, for example, made of insulating ceramic.
- the material of the cover member 132 may be, for example, alumina, silicon nitride, or the like.
- the anode side lead electrode 133 and the cathode side lead electrode 134 are fixed to one end (base end 130b) side of the heater main body 131.
- One end of the anode side lead electrode 133 is connected to an external power source via an anode side collective electrode 160 described later, and the other end is electrically connected to the heating resistor 135 via a lead wiring 136.
- one end of the cathode side lead electrode 134 is connected to an external power source via a cathode side collective electrode 170 described later, and the other end is electrically connected to the heating resistor 135 via a lead wiring 137.
- the anode side lead electrode 133 and the cathode side lead electrode 134 are, for example, wires containing a metal material such as nickel, iron, or a nickel-based heat-resistant alloy.
- the anode side lead electrode 133 has a pad portion 133a and a terminal portion 133b.
- the pad portion 133a is a planar portion located on the surface of the heater body 131, and is electrically connected to one end of the heating resistor 135 via a lead wire 136.
- the terminal portion 133b is electrically connected to the pad portion 133a, and extends from the base end portion 130b of the heater body 131 outward in the longitudinal direction of the heater body 131 (here, in the negative Z-axis direction).
- the cross section of the terminal portion 133b may be, for example, circular, oval, or rectangular.
- the outer diameter of the terminal portion 133b may be, for example, 0.5 or more and 2.0 mm or less.
- the cathode side lead electrode 134 has a pad portion 134a and a terminal portion 134b.
- the pad portion 134a is a planar portion located on the surface of the heater body 131, and is electrically connected to the other end of the heating resistor 135 via a lead wire 137.
- the terminal portion 134b is electrically connected to the pad portion 134a, and extends from the base end portion 130b of the heater body 131 outward in the longitudinal direction of the heater body 131 (here, in the negative Z-axis direction).
- the cross section of the terminal portion 134b may be, for example, circular, oval, or rectangular.
- the outer diameter of the terminal portion 134b may be, for example, 0.5 or more and 2.0 mm or less.
- the lead electrodes (anode side lead electrode 133 and cathode side lead electrode 134) of the heater 130 are connected to the pad parts 133a, 134a located on the surface of the heater main body 131, and the terminal parts connected to the pad parts 133a, 134a. 133b and 134b.
- stress is less likely to be concentrated because the pad portions 133a and 134a function as buffer members. Therefore, the heater 130 configured in this manner has high durability.
- FIG. 3 is a plan view of the heating device 100 according to the embodiment viewed from the positive direction of the Z-axis.
- the upper surface 110a of the heating plate 110 which is a heating surface, is shown in the shape of a rectangular plate, and the positions of the plurality of recesses 113 are shown with broken lines.
- the plurality of recesses 113 shown in FIG. 3 are arranged in six rows and six columns. That is, the heating plate 110 according to the embodiment has a total of 36 recesses 113. Note that the arrangement and number of the plurality of recesses 113 are not limited to the illustrated example.
- Fixture 120 is spaced apart from heating plate 110 .
- a plurality of heaters 130 are fixed to the fixture 120, each of which is inserted into the plurality of recesses 113. The manner in which the heater 130 is fixed to the fixture 120 will be described later.
- the support plate 150 is fixed to the fixture 120 by a plurality of columnar members 151 while being separated from the fixture 120.
- a space is provided for arranging the terminal portions 133b and 134b of each heater 130, in other words, an anode-side collective electrode 160 and a cathode-side collective electrode 170, which will be described later, are arranged. It becomes possible to secure a space between the support plate 150 and the fixing tool 120 for the purpose.
- the support plate 150 and the plurality of columnar members 151 may be omitted as necessary.
- FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. 3.
- FIG. 5 is a cross-sectional view taken along the line VV shown in FIG. 3. Note that in FIGS. 4 and 5, illustration of the support plate 150 and the plurality of columnar members 151 is omitted.
- the heating device 100 includes a plurality of heaters 130 fixed to a fixture 120 and inserted into a plurality of recesses 113 of a heating plate 110, respectively.
- the heating plate 110 has a first plate member 111 and a second plate member 112.
- the first plate member 111 is a plate-like member having an upper surface 110a of the heating plate 110, which is a heating surface.
- the first plate member 111 is joined to the second plate member 112 by, for example, a fixing member 114 such as a bolt. That is, the lower surface 111a of the first plate member 111 opposite to the upper surface 110a is a joint surface to be joined to the second plate member 112.
- the second plate member 112 is a plate-like member having an upper surface 112a that is a surface to be joined to be joined to the joining surface of the first plate member 111, and a lower surface 110b located on the opposite side of the upper surface 112a.
- a plurality of through holes 112b are formed in the lower surface 110b, and the lower surface 111a of the first plate member 111 is exposed from each of the plurality of through holes 112b.
- Each of the plurality of recesses 113 is formed by each of the plurality of through holes 112b and the lower surface 111a of the first plate member 111 exposed from each of the plurality of through holes 112b. That is, the inner wall surface of each through hole 112b forms the inner surface of each recess 113, and the lower surface 111a of the first plate member 111 forms the bottom surface (ceiling surface in the attitude shown in FIG. 5) of each recess 113. There is.
- the tip portions 130a of the plurality of heaters 130 are located within the plurality of recesses 113, with the plurality of heaters 130 being inserted into the plurality of recesses 113, respectively.
- the heating plate 110 does not need to be divided into two members, the first plate member 111 and the second plate member 112.
- portions corresponding to the first plate member 111 and the second plate member 112 may be integrally formed of a metal plate member.
- the heating plate 110 has a plurality of recesses 113 on the back surface located opposite to the heating surface of the integrally formed plate-like member.
- the fixture 120 includes a fixing plate 121 and a plurality of fixing bars 122 and 123.
- the fixed plate 121 is, for example, a metal plate member.
- the fixed plate 121 is separated from the heating plate 110 by being connected to the heating plate 110 with a connecting member 124 such as a bolt, with a gap formed between the fixed plate 121 and the heating plate 110. It is located.
- a connecting member 124 such as a bolt
- the fixing plate 121 has a plurality of through holes 121a at positions corresponding to the plurality of recesses 113.
- a plurality of heaters 130 are respectively inserted into the plurality of through holes 121a.
- the plurality of recesses 113, the plurality of through holes 121a, and the plurality of heaters 130 will be simply referred to as “recesses 113,” “fixing holes 120a,” and “heaters 130,” respectively, unless there is a need to distinguish them. It is called.
- the heater body 131 of the heater 130 passes through the through hole 121a, and its tip 130a is inserted into the recess 113.
- the base end portion 130b of the heater body 131 protrudes further away from the upper surface 110a of the heating plate 110, which is the heating surface, than the lower surface of the fixed plate 121.
- the above-mentioned anode side lead electrode 133 and cathode side lead electrode 134 are located.
- the anode-side lead electrode 133 and the cathode-side lead electrode 134 are provided on the base end portion 130b of the heater body 131 that protrudes away from the upper surface 110a of the heating plate 110, which is the heating surface.
- the cathode side lead electrode 134 can be moved away. Therefore, with this configuration, heat transfer to the anode-side lead electrode 133 and the cathode-side lead electrode 134 can be reduced.
- the fixing bars 122 and 123 are, for example, metal rod-shaped members.
- the fixing bars 122 and 123 sandwich the cover members 132 of the plurality of heaters 130, and are connected to the fixing plate 121 by a connecting member 125 such as a bolt. Thereby, the fixing bars 122 and 123 can fix the plurality of heaters 130 to the fixing plate 121.
- the heating device 100 has 36 heaters 130, and the pair of fixed bars 122, 123 cover the cover members 132 of six heaters 130 lined up in a row among these 36 heaters 130. is sandwiched between. Thereby, the pair of fixing bars 122 and 123 can fix the positions of the six heaters 130 arranged in a row.
- the heating device 100 has a total of six pairs of fixed bars 122, 123 (see FIG. 6).
- a spacer member 140 is arranged between the heating plate 110 and the fixture 120.
- the spacer member 140 has a cylindrical shape, and the connecting member 124 is inserted therethrough.
- the material of the spacer member 140 is preferably a heat-resistant ceramic, for example.
- As the material for the spacer member 140 for example, oxide ceramics, nitride ceramics, carbide ceramics, or the like can be used. Thereby, thermal expansion and thermal contraction of the spacer member 140 can be reduced, so that wear and tear of the spacer member 140 can be reduced.
- the anode-side collective electrode 160 is electrically connected to the anode-side lead electrodes 133 of the plurality of heaters 130 .
- the heating device 100 has 36 heaters 130, and the anode side collective electrode 160 is fixed to a pair of fixing bars 122, 123 in a line among these 36 heaters 130. It is electrically connected to the anode side lead electrodes 133 of the six heaters 130.
- the heating device 100 has a total of six anode-side collective electrodes 160 (see FIG. 6).
- the cathode side collective electrode 170 is electrically connected to the cathode side lead electrodes 134 of the plurality of heaters 130.
- the heating device 100 has 36 heaters 130, and the cathode-side collective electrode 170 is fixed to a pair of fixing bars 122, 123 in a line among the 36 heaters 130. It is electrically connected to the cathode side lead electrodes 134 of the six heaters 130.
- the heating device 100 has a total of six cathode-side collective electrodes 170 (see FIG. 7).
- the insulating member 180 is, for example, a plate-shaped member made of insulating ceramic, and is located between the anode-side collective electrode 160 and the cathode-side collective electrode 170.
- the heating device 100 includes two insulating members 180 for each set of an anode-side collective electrode 160 and a cathode-side collective electrode 170, and these two insulating members 180 form one set of anode-side collective electrodes 180. It is located between the collective electrode 160 and the cathode side collective electrode 170.
- the heating device 100 has the anode-side collective electrode 160 connected to two or more anode-side lead electrodes 133 of two or more heaters 130 among the plurality of heaters 130 of the heating device 100.
- the heating device 100 also includes a cathode-side collective electrode 170 connected to two or more cathode-side lead electrodes 134 of two or more heaters 130 among the plurality of heaters 130 included in the heating device 100 .
- the heating device 100 also includes an insulating member 180 located between the anode-side collective electrode 160 and the cathode-side collective electrode 170.
- the heat generated by the plurality of heaters 130 (six in this case) is transferred to two collective electrodes corresponding to each polarity (anode side lead electrode 133 and cathode side lead electrode 134) with different polarities. is transmitted to the collective electrode 160 and the cathode side collective electrode 170).
- the heat transferred to the two collective electrodes (anode-side collective electrode 160 and cathode-side collective electrode 170) corresponding to each polarity is transmitted to the insulating member 180 located between the two collective electrodes. This makes it possible to reduce dissipation of the heat generated by each heater 130 from the lead electrodes of each heater 130 having different polarities, thereby improving heat uniformity.
- insulating members 180 sandwiched between one set of anode-side collective electrode 160 and cathode-side collective electrode 170 is not limited to the illustrated example.
- FIG. 6 is a side view of the heating device 100 according to the embodiment viewed from the negative direction of the X-axis.
- FIG. 7 is a cross-sectional view taken along the line VII-VII shown in FIG.
- the anode-side collective electrode 160 includes a first metal plate 161, a second metal plate 162, and a plurality of first fixing members 163.
- the first metal plate 161 and the second metal plate 162 are metal plates having a rectangular cross-sectional shape.
- the first fixing member 163 detachably fixes the first metal plate 161 and the second metal plate 162.
- the first fixing member 163 is, for example, a bolt.
- the anode-side collective electrode 160 is electrically connected to the plurality of anode-side lead electrodes 133 by sandwiching the terminal portions 133b of the plurality of anode-side lead electrodes 133 between the first metal plate 161 and the second metal plate 162. .
- the first metal plate 161 and the second metal plate 162 extend along the X-axis direction, and include a plurality of (here, six) arranged along the X-axis direction. ) is sandwiched between the terminal portions 133b.
- the plurality of anode-side lead electrodes 133 can be connected in a straight line, so the plurality of anode-side lead electrodes 133 can be connected in the shortest possible time. Furthermore, even if there is variation in the length of the terminal portions 133b, connection is easy.
- first metal plate 161 and the second metal plate 162 connect the plurality of anode-side lead electrodes 133 with a gap provided between the terminal portions 133b of the plurality of anode-side lead electrodes 133 (six in this case).
- the terminal portion 133b of the terminal portion 133b is sandwiched therebetween.
- the first fixing member 163 fixes the first metal plate 161 and the second metal plate 162 at positions corresponding to the gaps between the terminal portions 133b of the plurality of (here, six) anode side lead electrodes 133. are doing.
- the first metal plate 161 and the second metal plate 162 can be bent in a direction toward each other, and the contact area between the second metal plate 162 and the insulating member 180 can be reduced. Therefore, with this configuration, the generation of stress due to the difference in thermal expansion and contraction between the first metal plate 161 and the second metal plate 162 and the insulating member 180 is reduced, and damage to the insulating member 180 is further reduced.
- the second metal plate 162 is in contact with the insulating member 180.
- the thickness of the second metal plate 162 is thinner than the thickness of the first metal plate 161. In this way, by reducing the thickness of the second metal plate 162, the heat transfer properties of the second metal plate 162 are improved. 180 can be promoted. Therefore, according to this configuration, it is possible to further improve thermal uniformity. Furthermore, since the second metal plate 162 is easily deformed elastically, thermal stress acting from the second metal plate 162 on the insulating member 180 can be alleviated.
- anode-side collective electrodes 160 are arranged along the Y-axis direction.
- the connection position between each anode-side collective electrode 160 and the terminal portion 133b is on the upper surface 110a of the heating plate 110. overlaps with In this way, by connecting the anode-side collective electrode 160 and the terminal part 133b within the range of the heating region, compared to, for example, connecting the anode-side collective electrode 160 and the terminal part 133b outside the heating region.
- heat dissipation from each heater 130 to the outside of the heating device 100 can be reduced. Therefore, according to this configuration, it is possible to further improve thermal uniformity.
- the cathode-side collective electrode 170 includes a third metal plate 171, a fourth metal plate 172, and a plurality of second fixing members 173.
- the third metal plate 171 and the fourth metal plate 172 are metal plates having a rectangular cross-sectional shape.
- the second fixing member 173 detachably fixes the third metal plate 171 and the fourth metal plate 172.
- the second fixing member 173 is, for example, a bolt.
- the cathode-side collective electrode 170 is electrically connected to the plurality of cathode-side lead electrodes 134 by sandwiching the terminal portions 134b of the plurality of cathode-side lead electrodes 134 between a third metal plate 171 and a fourth metal plate 172.
- the third metal plate 171 and the fourth metal plate 172 extend along the X-axis direction, and include a plurality of (here, six) arranged along the X-axis direction. ) is sandwiched between the terminal portions 134b.
- the plurality of cathode-side lead electrodes 134 can be connected in a straight line, so the plurality of cathode-side lead electrodes 134 can be connected in the shortest possible time. Further, even if the lengths of the terminal portions 134b vary, connection is easy.
- the third metal plate 171 and the fourth metal plate 172 connect the plurality of cathode-side lead electrodes 134 with a gap provided between the terminal portions 134b of the plurality of cathode-side lead electrodes 134 (six in this case).
- the terminal portion 134b of the terminal portion 134b is sandwiched therebetween.
- the third metal plate 171 and the fourth metal plate 172 can function as a spring. Therefore, with this configuration, the force that pinches the terminal portion 134b can be maintained for a long period of time.
- the stress caused by the difference in thermal expansion and contraction between the third metal plate 171 and the fourth metal plate 172 and the insulating member 180 is alleviated by the third metal plate 171 and the fourth metal plate 172 serving as springs, so that the insulation Damage to member 180 is reduced.
- the second fixing member 173 fixes the third metal plate 171 and the fourth metal plate 172 at positions corresponding to the gaps between the terminal portions 134b of the plurality of (six in this case) cathode side lead electrodes 134. are doing.
- the third metal plate 171 and the fourth metal plate 172 can be bent in a direction toward each other, and the contact area between the fourth metal plate 172 and the insulating member 180 can be reduced. Therefore, according to this configuration, the generation of stress due to the difference in thermal expansion and contraction between the third metal plate 171 and the fourth metal plate 172 and the insulating member 180 is reduced, and damage to the insulating member 180 is further reduced.
- the fourth metal plate 172 is in contact with the insulating member 180.
- the thickness of the fourth metal plate 172 is thinner than the thickness of the third metal plate 171. In this way, by reducing the thickness of the fourth metal plate 172, the heat conductivity of the fourth metal plate 172 is improved. 180 can be promoted. Therefore, according to this configuration, it is possible to further improve thermal uniformity. Furthermore, since the fourth metal plate 172 is easily deformed elastically, the thermal stress acting from the fourth metal plate 172 on the insulating member 180 can be alleviated.
- the terminal portions 134b of the adjacent anode-side lead electrodes 133 and the terminal portions 134b of the adjacent cathode-side lead electrodes 134 are located on opposite sides of the insulating member 180.
- the first fixing member 163 holds the first metal plate 161 and the second metal plate 162 at a position closer to one of the adjacent anode lead electrodes 133 than the other anode lead electrode. Fixed.
- the second fixing member 173 is provided with a third metal at a position closer to the other second lead electrode than one of the adjacent cathode lead electrodes 134 corresponding to the other anode lead electrode.
- a plate 171 and a fourth metal plate 172 are fixed.
- the first fixing member 163 can fix the first metal plate 161 and the second metal plate 162, and the second fixing member 173 can fix the third metal plate 171 and the fourth metal plate 172. Since the position is shifted, the contact portion between the metal plate and the insulating member 180 is shifted. Therefore, according to this configuration, the generation of stress due to the difference in thermal expansion and contraction between the second metal plate 162 and the fourth metal plate 172 and the insulating member 180 is reduced, and damage to the insulating member 180 is further reduced.
- the insulating member 180 is fixed to one of the anode side collective electrode 160 and the cathode side collective electrode 170 with a fixing member 181 such as a bolt.
- a fixing member 181 such as a bolt.
- the anode-side collective electrode 160 and the cathode-side collective electrode 170 extend along the X-axis direction parallel to the upper surface 110a, which is the heating surface of the heating plate 110.
- the insulating member 180 is fixed in a cantilevered state by a fixing member 181 to one end of the anode-side collective electrode 160 and the cathode-side collective electrode 170 in one of the extending directions (here, the X-axis direction). There is.
- one of the two insulating members 180 sandwiched between the anode-side collective electrode 160 and the cathode-side collective electrode 170 is connected to the end of the second metal plate 162 of the anode-side collective electrode 160 on the negative side in the X-axis direction. It is fixed in a cantilevered state by a fixing member 181.
- the other of the two insulating members 180 sandwiched between the anode-side collective electrode 160 and the cathode-side collective electrode 170 is fixed to the positive end of the fourth metal plate 172 in the X-axis direction of the cathode-side collective electrode 170. It is fixed in a cantilevered manner by a member 181.
- two insulating members 180 sandwiched between the anode-side collective electrode 160 and the cathode-side collective electrode 170 are connected to the heating plate 110 between the anode-side collective electrode 160 and the cathode-side collective electrode 170. are located in parallel to the upper surface 110a, which is the heating surface (X-axis direction).
- the two insulating members 180 side by side between the anode-side collective electrode 160 and the cathode-side collective electrode 170 one insulating member 180 is placed between the anode-side collective electrode 160 and the cathode-side collective electrode 170.
- Thermal stress on each insulating member 180 can be reduced compared to the case where two insulating members 180 are located. Therefore, according to this configuration, damage to the insulating member 180 is further reduced.
- the two insulating members 180 are arranged in a direction (X-axis direction) parallel to the upper surface 110a, which is the heating surface of the heating plate 110, between the anode-side collective electrode 160 and the cathode-side collective electrode 170.
- the arrangement of the insulating member 180 is not limited to this.
- the two insulating members 180 are located side by side between the anode-side collective electrode 160 and the cathode-side collective electrode 170 in a direction perpendicular to the upper surface 110a, which is the heating surface of the heating plate 110 (Z-axis direction). Good too.
- FIG. 8 is a schematic diagram for explaining an example of the positional relationship between the folded portions 135b and 135c of each heating resistor 135 of the plurality of heaters 130 and each recessed portion 113 of the heating plate 110.
- FIG. 9 is a cross-sectional view taken along the line IX-IX shown in FIG.
- At least the folded portion 135b located on the tip end 130a side of the heater body 131 among the folded portions 135b and 135c of each heating resistor 135 of the plurality of heaters 130. is located within the recess 113.
- the folded part 135c located on the base end 130b side of the heater body 131 is located outside the recess 113, but the folded part 135b located on the distal end 130a side of the heater body 131. is located within the recess 113.
- the folded portion 135b is located within the recess 113.
- the heater 130 which includes a meandering heating resistor 135, has the highest heating zone at the folded portion 135b located on the tip 130a side of the heater body 131. Therefore, by positioning the folded portion 135b of each heating resistor 135 of the plurality of heaters 130 within the recess 113, the position of the maximum heat generation zone of each heater 130 can be adjusted along the depth direction of the recess 113 on the bottom surface of the recess 113. It can be aligned to nearby positions. Thereby, it is possible to prevent the heat generated by each heater 130 from dissipating separately from the opening of each recess 113 in heating plate 110. Therefore, according to the heating device 100 according to the embodiment, it is possible to improve the thermal uniformity of the heating plate 110.
- each heater 130 is positioned (inserted) in the recess 113 so that the tip 130a of the heater main body 131 and the bottom surface of the recess 113 do not come into contact with each other.
- stress from the bottom surface of the recess 113 is not applied to the tip portion 130a of the heater body 131 during thermal expansion of each heater 130. Therefore, according to the heating device 100 according to the embodiment, the durability of the plurality of heaters 130 can be improved.
- the tip 130a of the heater body 131 is located away from the bottom surface of the recess 113, the heat generation from the highest heat generation zone (that is, the folded portion 135b of the heat generating resistor 135) located on the tip 130a side of the heater body 131 is Radiant heat can be transferred to the heating plate 110. Therefore, according to the heating device 100 according to the embodiment, it is possible to reduce the concentration of heat on a specific location of the heating plate 110, and it is possible to further improve the thermal uniformity of the heating plate 110.
- the recessed portion 113 is located in the Y-axis direction (the first direction).
- the length L1 is longer than the length L2 in the X-axis direction (an example in the second direction).
- the shape of the recess 113 is such that the length L1 in the Y-axis direction is longer than the length L2 in the X-axis direction.
- the recess 113 two linear inner surfaces 113a in the X-axis direction are connected at both ends in the Y-axis direction by a convex curved surface 113b.
- the shape of the recess 113 is such that, in plan view when viewed from a direction perpendicular to the upper surface 110a of the heating plate 110, which is a heating surface, two linear inner surfaces 113a in the X-axis direction are half-shaped at both ends in the Y-axis direction. It has a racetrack shape connected by circular convex curved surfaces 113b.
- each heater 130 has a plate shape having a first surface S1 in the X-axis direction and a second surface S2 in the Y-axis direction.
- each heater 130 has a rectangular shape whose longitudinal direction coincides with the Y-axis direction and whose transversal direction coincides with the X-axis direction.
- the first surface S1 of each heater 130 in the lateral direction (here, the X-axis direction) faces the inner surface 113a of the recess 113 in the X-axis direction.
- the heat generated by each heater 130 is transmitted from the first surface S1 toward the inner surface 113a of the recess 113, so that the heat transfer direction from the plurality of heaters 130 to the heating plate 110 is the same direction. (Here, in the X-axis direction). Therefore, according to the heating device 100 according to the embodiment, the thermal uniformity of the heating plate 110 can be further improved.
- the shape of the recess 113 is a racetrack shape as shown in FIG. You may be facing the
- Each heater 130 has a temperature distribution in which the temperature decreases in the order of the first surface S1, the second surface S2, and the corner of the first surface S1 and the second surface S2. Therefore, with such a configuration, the second surface S2 and the corner portion of each heater 130 are close to the convex curved surface 113b of the recess 113, so that the heat transfer efficiency with respect to the convex curved surface 113b of the recess 113 is determined from the inner surface of the recess 113. The heat transfer efficiency can be made close to that of 113a. Therefore, according to the heating device 100 having such a configuration, the thermal uniformity of the heating plate 110 can be further improved.
- the width along the Y-axis direction of the inner surface 113a of the recess 113 in the The width may be smaller than the width along the Y-axis direction).
- the width of the inner surface 113a of the recess 113 in the X-axis direction along the Y-axis direction is larger than the width of each heater 130 along the longitudinal direction.
- the second surface S2 and the corner portion are close to the convex curved surface 113b of the recessed portion 113. This improves the efficiency of heat transfer from each heater 130 to the convex curved surface 113b of the recess 113, so that the heat uniformity of the heating plate 110 can be further improved.
- the shape of the recess 113 is a racetrack shape, but the shape of the recess 113 is not limited to the racetrack shape. That is, in a plan view seen from a direction perpendicular to the upper surface 110a of the heating plate 110 (here, the Z-axis direction), the shape of the recess 113 is such that the length L1 in the Y-axis direction is equal to the length L1 in the X-axis direction.
- the shape may be any shape other than the racetrack shape as long as it is longer than length L2.
- the shape of the recess 113 may be an ellipse in which the length L1 in the Y-axis direction is longer than the length L2 in the X-axis direction.
- the shape of the recess 113 may be a rectangular shape in which the length L1 in the Y-axis direction is longer than the length L2 in the X-axis direction.
- the shape of the recess 113 may be a rectangle with rounded corners.
- each heater 130 has a rectangular shape whose longitudinal direction coincides with the Y-axis direction and whose transversal direction coincides with the X-axis direction.
- the first surface S1 of each heater 130 in the lateral direction (here, the X-axis direction) faces the inner surface 113a of the recess 113 in the X-axis direction.
- FIG. 13 is a schematic diagram for explaining another example of the positional relationship between the folded portions 135b and 135c of each heating resistor 135 of the plurality of heaters 130 and each recessed portion 113 of the heating plate 110.
- all the folded portions 135b and 135c of each heating resistor 135 of the plurality of heaters 130 may be located within the recessed portion 113.
- the folded part 135c located on the proximal end 130b side of the heater main body 131 is also located in the recess 113. There is.
- each heater 130 can be transmitted to the heating plate 110 via each recess 113. It is possible to further improve thermal uniformity.
- connection portion between the heating resistor 135 and the lead wires 136 and 137 is located outside the recess 113.
- the outside air can be connected to the heat generating resistor 135 and the lead wires 136 and 137.
- the temperature of the connection area can be lowered by making it easier to touch. Therefore, according to the heating device 100 having such a configuration, the electric resistance value at the connection portion between the heating resistor 135 and the lead wirings 136 and 137 can be lowered, and therefore the heat generation efficiency in the heating resistor 135 can be improved. can.
- FIG. 14 is a schematic diagram for explaining another example of the positional relationship between the connecting portions of the heating resistor 135 and the lead wires 136 and 137 and each recess 113 of the heating plate 110.
- connection portion between the heating resistor 135 and the lead wires 136 and 137 may be located within the recess 113.
- the temperature difference between the heat generating resistor 135 and the heat generating resistor 135 is smaller than that in the case where the connecting region between the heat generating resistor 135 and the lead wires 136 and 137 is located outside the recess 113. This makes it difficult for thermal stress to concentrate on the connection area. Therefore, according to the heating device 100 having such a configuration, the durability of the plurality of heaters 130 can be improved.
- FIG. 15 is a diagram showing another example of the insertion mode of the heater 130 according to the embodiment.
- a heat insulating material 190 may be located on the lower surface 110b of the heating plate 110.
- the heat insulating material 190 has through holes 191 corresponding to the positions of the recesses 113.
- Each heater 130 may be inserted into the recess 113 through the through hole 191 of the heat insulating material 190.
- Heating device 110 Heating plate 110a Upper surface 110b Lower surface 111 First plate member 111a Lower surface 112 Second plate member 112a Upper surface 112b Through hole 113 Recess 113a Inner surface 113b Convex curved surface 114 Fixing member 120 Fixing tool 120a Fixing hole 121 Fixing plate 121a Through hole 122 Fixed bar 124 Connecting member 125 Connecting member 130 Heater 130a Distal end 130b Base end 131 Heater main body 132 Cover member 132a Bonding material 133 Anode side lead electrode 133a Pad section 133b Terminal section 134 Cathode side lead electrode 134a Pad section 134b Terminal Part 135 Heat generating resistor 135a Straight part 135b Folded part 135c Folded part 136 Lead wire 137 Lead wire 140 Spacer member 150 Support plate 151 Column member 160 Anode side collective electrode 161 First metal plate 162 Second metal plate 163 First fixing member 170 Cathode side collective electrode 171 Third metal plate 172 Fourth metal plate 173 Second fixing member 180 Insulating
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- Resistance Heating (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Surface Heating Bodies (AREA)
Abstract
Description
110 加熱プレート
110a 上面
110b 下面
111 第1のプレート部材
111a 下面
112 第2のプレート部材
112a 上面
112b 貫通孔
113 凹部
113a 内側面
113b 凸曲面
114 固定部材
120 固定具
120a 固定孔
121 固定プレート
121a 貫通孔
122 固定バー
124 連結部材
125 連結部材
130 ヒータ
130a 先端部
130b 基端部
131 ヒータ本体
132 カバー部材
132a 接合材
133 陽極側リード電極
133a パッド部
133b 端子部
134 陰極側リード電極
134a パッド部
134b 端子部
135 発熱抵抗体
135a 直線部
135b 折返部
135c 折返部
136 リード配線
137 リード配線
140 スペーサ部材
150 支持プレート
151 柱状部材
160 陽極側集合電極
161 第1金属板
162 第2金属板
163 第1固定部材
170 陰極側集合電極
171 第3金属板
172 第4金属板
173 第2固定部材
180 絶縁部材
181 固定部材
190 断熱材
191 貫通孔
S1 第1面
S2 第2面
Claims (8)
- 加熱プレートと、
複数のヒータと、を備え、
前記加熱プレートは、加熱面を有し、前記加熱面とは反対の裏面に複数の凹部を有し、
前記複数のヒータは、前記複数の凹部のそれぞれに位置しており、
各前記ヒータは、柱状の本体部と、前記本体部の長手方向の内部にミアンダ状の配線部とを有しており、
前記配線部は、複数の折返部を有し、
前記本体部の先端側に位置する前記折返部は、前記凹部内に位置している、加熱装置。 - 前記加熱面と垂直な方向から見た平面視において、前記凹部は、第1方向の長さが前記第1方向に直交する第2方向の長さよりも長く、
各前記ヒータは、前記第1方向に第2面を有しかつ前記第2方向に第1面を有する板状であり、
各前記ヒータの前記第1面は、前記凹部の前記第2方向における内側面と対向している、請求項1に記載の加熱装置。 - 前記加熱面と垂直な方向から見た平面視において、前記凹部は、前記第2方向における2つの直線状の前記内側面の前記第1方向における両端が凸曲面で繋がれており、
各前記ヒータの前記第2面は、前記凹部の前記凸曲面と対向している、請求項2に記載の加熱装置。 - 前記配線部が有する全ての前記複数の折返部は、前記凹部内に位置している、請求項1に記載の加熱装置。
- 各前記ヒータは、前記本体部の内部に前記配線部の端部に接続されるリード線部をさらに有し、
前記配線部と前記リード線部との接続部位は、前記凹部内に位置している、請求項4に記載の加熱装置。 - 各前記ヒータは、前記本体部の内部に前記配線部の端部に接続されるリード線部をさらに有し、
前記配線部と前記リード線部との接続部位は、前記凹部外に位置している、請求項4に記載の加熱装置。 - 各前記ヒータは、前記本体部の先端と前記凹部の底面とが接しないように、前記凹部内に位置している、請求項1に記載の加熱装置。
- 前記加熱プレートの前記裏面には、前記凹部の位置に対応して貫通孔を有する断熱材が位置しており、
各前記ヒータは、前記断熱材の貫通孔を通じて前記凹部内に位置している、請求項1に記載の加熱装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024517218A JP7767590B2 (ja) | 2022-04-27 | 2023-04-17 | 加熱装置 |
| CN202380035392.2A CN119073005A (zh) | 2022-04-27 | 2023-04-17 | 加热装置 |
| EP23796177.6A EP4518579A4 (en) | 2022-04-27 | 2023-04-17 | HEATING DEVICE |
| US18/858,099 US20250275018A1 (en) | 2022-04-27 | 2023-04-17 | Heating device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022073551 | 2022-04-27 | ||
| JP2022-073551 | 2022-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023210434A1 true WO2023210434A1 (ja) | 2023-11-02 |
Family
ID=88518574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/015380 Ceased WO2023210434A1 (ja) | 2022-04-27 | 2023-04-17 | 加熱装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250275018A1 (ja) |
| EP (1) | EP4518579A4 (ja) |
| JP (1) | JP7767590B2 (ja) |
| CN (1) | CN119073005A (ja) |
| WO (1) | WO2023210434A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0543495U (ja) * | 1991-11-12 | 1993-06-11 | 日本特殊陶業株式会社 | セラミツクヒータ |
| JPH06196253A (ja) * | 1992-12-24 | 1994-07-15 | Kyocera Corp | セラミックヒータ |
| JP2002184557A (ja) * | 2000-12-12 | 2002-06-28 | Ibiden Co Ltd | 半導体製造・検査装置用ヒータ |
| JP2003151732A (ja) * | 2001-11-12 | 2003-05-23 | Sakaguchi Dennetsu Kk | ホットプレート |
| JP2016207595A (ja) | 2015-04-28 | 2016-12-08 | 日本特殊陶業株式会社 | 加熱装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4514653B2 (ja) * | 2005-05-27 | 2010-07-28 | 京セラ株式会社 | セラミックヒーター及びこれを用いた加熱用こて |
-
2023
- 2023-04-17 CN CN202380035392.2A patent/CN119073005A/zh active Pending
- 2023-04-17 WO PCT/JP2023/015380 patent/WO2023210434A1/ja not_active Ceased
- 2023-04-17 EP EP23796177.6A patent/EP4518579A4/en active Pending
- 2023-04-17 US US18/858,099 patent/US20250275018A1/en active Pending
- 2023-04-17 JP JP2024517218A patent/JP7767590B2/ja active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0543495U (ja) * | 1991-11-12 | 1993-06-11 | 日本特殊陶業株式会社 | セラミツクヒータ |
| JPH06196253A (ja) * | 1992-12-24 | 1994-07-15 | Kyocera Corp | セラミックヒータ |
| JP2002184557A (ja) * | 2000-12-12 | 2002-06-28 | Ibiden Co Ltd | 半導体製造・検査装置用ヒータ |
| JP2003151732A (ja) * | 2001-11-12 | 2003-05-23 | Sakaguchi Dennetsu Kk | ホットプレート |
| JP2016207595A (ja) | 2015-04-28 | 2016-12-08 | 日本特殊陶業株式会社 | 加熱装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4518579A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4518579A4 (en) | 2026-03-11 |
| US20250275018A1 (en) | 2025-08-28 |
| JP7767590B2 (ja) | 2025-11-11 |
| EP4518579A1 (en) | 2025-03-05 |
| JPWO2023210434A1 (ja) | 2023-11-02 |
| CN119073005A (zh) | 2024-12-03 |
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