JP2011220649A - Heating apparatus - Google Patents

Heating apparatus Download PDF

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JP2011220649A
JP2011220649A JP2010093016A JP2010093016A JP2011220649A JP 2011220649 A JP2011220649 A JP 2011220649A JP 2010093016 A JP2010093016 A JP 2010093016A JP 2010093016 A JP2010093016 A JP 2010093016A JP 2011220649 A JP2011220649 A JP 2011220649A
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housing member
heating
heated
storage member
cylindrical
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昌久 ▲徳▼本
Masahisa Tokumoto
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Kyushu Nissho KK
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Kyushu Nissho KK
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Abstract

PROBLEM TO BE SOLVED: To provide a heating apparatus which has a simple structure, is easily handled, can heat an entire heated subject equally without unevenness and is also excellent in heating efficiency.SOLUTION: The heating apparatus 10 includes a cylindrical storage member 12 which accommodates the heated subject W, a cylindrical heater 13 which is arranged with space V from the periphery 12a of the storage member 12, and a blasting fan 14 which generates an air current R in a fixed direction which parallels the direction of the axis 12c within the storage member 12, in a casing 11 made of a heat radiating material 11a. The storage member 12 is made of a stainless steel pipe. The cylindrical heater 13 is arranged so that the axis 12c of the storage member 12 and the axis 13c of the cylindrical heater 13 may be coaxial in such a state as to surround the periphery 12a of the storage member 12. The rotating shaft 14a of the blasting fan 14 arranged in a region that faces the rear opening 12r of the storage member 12 is coaxial with the axes 12c and 13c, too.

Description

本発明は、材料試験用の供試体の加熱あるいは電気・電子部品や機械部品などの加熱処理などに使用される加熱装置に関する。   The present invention relates to a heating apparatus used for heating a specimen for material testing or for heat treatment of electric / electronic parts, mechanical parts and the like.

材料試験用の供試体の加熱あるいは電気・電子部品や機械部品などの加熱処理などに使用される加熱装置に関しては、従来、様々な技術が提案されているが、本発明に関連する加熱装置として、例えば、特許文献１記載の「熱風循環炉」や特許文献２記載の「クリーンオーブン」などがある。   Various technologies have been proposed for heating devices used for heating specimens for material testing or for heat treatment of electrical / electronic parts and mechanical parts. However, as heating apparatuses related to the present invention, For example, there are a “hot air circulating furnace” described in Patent Document 1 and a “clean oven” described in Patent Document 2.

特許文献１記載の「熱風循環炉」においては、炉本体の炉室内に設けられた循環通路の途中に、被処理物を収容する加熱室と、熱源と、送風機とが設けられ、送風機の吸込口が加熱室の出口に臨むような状態で、送風機が加熱室の出口に近接して設けられている。   In the “hot air circulating furnace” described in Patent Document 1, a heating chamber for storing an object to be processed, a heat source, and a blower are provided in the middle of a circulation passage provided in the furnace chamber of the furnace body. A blower is provided close to the outlet of the heating chamber with the mouth facing the outlet of the heating chamber.

特許文献２記載の「クリーンオーブン」においては、断熱材で囲まれたオーブン内に、被処理物を収容する処理室、加熱手段、送風手段及び送風路が設けられ、オーブン内の気体を加熱しながら処理室に循環供給する構成となっている。   In the “clean oven” described in Patent Document 2, a processing chamber for storing an object to be processed, a heating unit, a blowing unit, and a blowing path are provided in an oven surrounded by a heat insulating material, and heats the gas in the oven. However, it is configured to circulate and supply to the processing chamber.

特開２００３−３２２４７６号公報JP 2003-322476 A 特開２００５−２４９２７６号公報JP 2005-249276 A

特許文献１，２記載の加熱装置はいずれも、加熱手段で昇温させた気体を送風機によってケーシング内で循環させながら被加熱物を加熱する方式、即ち、加熱手段で昇温させた気体流を介して被加熱物を加熱する方式であるため、加熱効率が悪い。また、被加熱物の収容場所である加熱領域の温度分布を均一化するのが困難であるため、被加熱物全体をムラなく均等に加熱することができない。   Each of the heating devices described in Patent Documents 1 and 2 is a method of heating an object to be heated while circulating a gas heated by a heating means in a casing by a blower, that is, a gas flow heated by a heating means. Heating efficiency is poor because the object to be heated is heated via the heating device. In addition, since it is difficult to make the temperature distribution in the heating region, which is the place where the object to be heated, becomes uniform, the entire object to be heated cannot be heated evenly.

さらに、加熱手段、送風機及び被加熱物の収容場所などがケーシング内に形成される気体流の循環方向に従って配置されているので、構造が複雑であり、清掃その他のメンテナンスにも手間を要している。   Furthermore, since the heating means, the blower, and the place for storing the object to be heated are arranged according to the circulation direction of the gas flow formed in the casing, the structure is complicated, and it takes time for cleaning and other maintenance. Yes.

本発明が解決しようとする課題は、簡素な構造でメンテナンスも容易であり、被加熱物全体をムラなく均等に加熱することができ、加熱効率も良好である加熱装置を提供することにある。   The problem to be solved by the present invention is to provide a heating device that has a simple structure, is easy to maintain, can uniformly heat the entire object to be heated, and has good heating efficiency.

本発明の加熱装置は、断熱材で形成されたケーシング内に、被加熱物を収容する筒状の収容部材と、前記収容部材の外周面から隙間を隔てて配置された発熱手段と、前記収容部材内にその軸心方向に沿った一定方向の気体流を発生させる送風手段と、を備えたことを特徴とする。   The heating device of the present invention includes a cylindrical housing member that accommodates an object to be heated, a heating unit that is disposed with a gap from an outer peripheral surface of the housing member, and a housing that is formed of a heat insulating material. And a blowing means for generating a gas flow in a certain direction along the axial direction in the member.

このような構成とすれば、収容部材内に収容された被加熱物は、発熱手段によって昇温した収容部材からの輻射熱と、収容部材内を軸心方向に沿って一定方向に流動する高温の気体流と、によって加熱されるので、収容部材内の一定温度領域を広く確保することができるようになる結果、収容部材内に収容された被加熱物全体をムラなく均等に加熱することができ、加熱効率も良好となる。また、ケーシング内に、被加熱物を収容する収容部材と、その外周面から隙間を隔てて配置された発熱手段と、前記収容部材内の軸心方向の気体流を発生させる送風手段と、を配置した構成であるため、構造は簡素であり、清掃その他のメンテナンスも容易である。   With such a configuration, the object to be heated housed in the housing member has a radiant heat from the housing member heated by the heating means and a high temperature that flows in a certain direction along the axial direction in the housing member. As a result of being heated by the gas flow, it becomes possible to secure a wide constant temperature region in the housing member, and as a result, the entire object to be heated contained in the housing member can be heated evenly. Also, the heating efficiency is improved. Further, a housing member that accommodates an object to be heated in the casing, a heat generating unit disposed with a gap from the outer peripheral surface thereof, and a blower unit that generates a gas flow in an axial direction in the housing member, Due to the arrangement, the structure is simple, and cleaning and other maintenance are easy.

ここで、前記発熱手段として、前記収容部材の外周面を囲繞する筒状発熱体を配置することが望ましい。このような構成とすれば、収容部材全体を均等に加熱することが可能となるため、収容部材内の一定温度領域が広がり、収容部材内に収容された被加熱物に対する均等加熱機能が向上する。   Here, it is preferable that a cylindrical heating element surrounding the outer peripheral surface of the housing member is disposed as the heating means. With such a configuration, it becomes possible to uniformly heat the entire storage member, so that a constant temperature region in the storage member is widened, and an even heating function for an object to be heated stored in the storage member is improved. .

この場合、前記収容部材の軸心と、前記筒状発熱体との軸心とが同軸をなすように配置することが望ましい。このような構成とすれば、収容部材の外周面のどの位置においても当該外周面と筒状発熱体の内周面との距離が常に一定となるため、収容部材に対する均等加熱機能が高まり、収容部材内の被加熱物に対する均等加熱機能がさらに向上する。   In this case, it is desirable to arrange so that the axis of the housing member and the axis of the cylindrical heating element are coaxial. With such a configuration, the distance between the outer peripheral surface and the inner peripheral surface of the cylindrical heating element is always constant at any position on the outer peripheral surface of the housing member. The uniform heating function for the object to be heated in the member is further improved.

ここで、前記送風手段として、電動機によって回転駆動される送風ファンを設けることが望ましい。このような構成とすれば、前記収容部材内にその軸心方向に沿った一定方向の気体流を容易に発生させることが可能となり、均等加熱機能の向上に有効である。また、電動機の回転数を変化させて送風ファンの回転数を増減させることにより、収容部材内を流動する気体流の流速や流量なども調節可能となるので、被加熱物に応じた加熱条件を設定することができる。   Here, it is desirable to provide a blower fan that is rotationally driven by an electric motor as the blower unit. With such a configuration, it is possible to easily generate a gas flow in a certain direction along the axial direction in the housing member, which is effective in improving the uniform heating function. In addition, by changing the number of rotations of the motor to increase or decrease the number of rotations of the blower fan, it is possible to adjust the flow rate and flow rate of the gas flow flowing in the housing member, so the heating conditions according to the object to be heated can be adjusted. Can be set.

本発明により、簡素な構造で、メンテナンスも容易であり、被加熱物全体をムラなく均等に加熱することができ、加熱効率も良好である加熱装置を提供することができる。   According to the present invention, it is possible to provide a heating apparatus that has a simple structure, is easy to maintain, can uniformly heat the entire object to be heated, and has good heating efficiency.

本発明の実施形態である加熱装置を示す断面図である。It is sectional drawing which shows the heating apparatus which is embodiment of this invention. 図１のＡ−Ａ線における断面図である。It is sectional drawing in the AA of FIG.

以下、図面に基づいて本発明の実施形態について説明する。図１，図２に示すように、本実施形態の加熱装置１０は、ロックウール及びセラミックスウールを内包する断熱材１１ａで形成されたケーシング１１内に、被加熱物Ｗを収容する円筒状の収容部材１２と、収容部材１２の外周面１２ａから隙間Ｖを隔てて配置された発熱手段である円筒状発熱体１３と、収容部材１２内にその軸心１２ｃ方向に沿った一定方向の気体流Ｒを発生させる送風手段である送風ファン１４と、を備えている。収容部材１２はステンレス鋼管で形成されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the heating device 10 according to the present embodiment has a cylindrical housing for housing the article to be heated W in a casing 11 formed of a heat insulating material 11 a containing rock wool and ceramic wool. A member 12, a cylindrical heating element 13 that is a heating means disposed with a gap V from the outer peripheral surface 12 a of the housing member 12, and a gas flow R in a certain direction along the axis 12 c in the housing member 12. And a blower fan 14 which is a blower means for generating air. The housing member 12 is formed of a stainless steel pipe.

円筒状発熱体１３は収容部材１２の外周面１２ａを囲繞するような状態で、且つ、収容部材１２の軸心１２ｃと、円筒状発熱体１３との軸心１３ｃとが同軸をなすように配置されている。円筒状発熱体１３内の収容部材１２は、その外周と円筒状発熱体１３の内周との間に、円筒状発熱体１３の半径方向に配置された複数の支柱（図示せず）によって同軸上に保持されている。また、ケーシング１１の後壁部１１ｗ側に位置する、収容部材１２の後方開口部１２ｒに臨む領域に配置された送風ファン１４の回転軸１４ａも軸心１２ｃ，１３ｃと同軸をなしている。   The cylindrical heating element 13 is arranged so as to surround the outer peripheral surface 12a of the housing member 12, and the axis 12c of the housing member 12 and the axis 13c of the cylindrical heating element 13 are coaxial. Has been. The accommodating member 12 in the cylindrical heating element 13 is coaxial between a plurality of columns (not shown) arranged in the radial direction of the cylindrical heating element 13 between the outer periphery thereof and the inner periphery of the cylindrical heating element 13. Is held on. Further, the rotation shaft 14a of the blower fan 14 disposed in the region facing the rear opening 12r of the housing member 12 located on the rear wall portion 11w side of the casing 11 is also coaxial with the shaft centers 12c and 13c.

送風ファン１４の回転軸１４ａはケーシング１１の後壁部１１ｗを貫通して延設され、ケーシング１１外に配置された電動機１５の駆動軸１５ａに連結されている。電動機１５の駆動軸１５ａの回転数及び回転方向は変更可能であるため、駆動軸１５ａ及び回転軸１４ａによって回転する送風ファン１４の回転数及び回転方向も変更可能である。   A rotating shaft 14 a of the blower fan 14 extends through the rear wall portion 11 w of the casing 11 and is connected to a driving shaft 15 a of an electric motor 15 disposed outside the casing 11. Since the rotation speed and rotation direction of the drive shaft 15a of the electric motor 15 can be changed, the rotation speed and rotation direction of the blower fan 14 rotated by the drive shaft 15a and the rotation shaft 14a can also be changed.

ケーシング１１の後壁部１１ｗと反対側の開口部１１ｂは扉１１ｄよって開閉可能に閉塞され、この開口部１１ｂを経由して収容部材１２内に対する被加熱物Ｗの出し入れを行う。扉１１ｄから外部への熱放散によって収容部材１２内の温度が低下するのを防止するため、扉１１ｄの内面側に、円板状をした金属製の壁板１６がスペーサ１６ａを介して扉１１ｄと略平行に取り付けられている。扉１１ｄの内面と壁板１６との間にはスペーサ１６ａの長さ分の隙間が設けられている。円筒状発熱体１３は、耐熱材で形成された円筒体１３ａ内に線状の電気ヒータ１３ｈが螺旋状に配設されている。   The opening 11b opposite to the rear wall 11w of the casing 11 is closed by the door 11d so that it can be opened and closed, and the object to be heated W is taken in and out of the housing member 12 through the opening 11b. In order to prevent the temperature in the housing member 12 from decreasing due to heat dissipation from the door 11d to the outside, a disk-shaped metal wall plate 16 is provided on the inner surface side of the door 11d via the spacer 16a. It is attached almost in parallel. A gap corresponding to the length of the spacer 16 a is provided between the inner surface of the door 11 d and the wall plate 16. In the cylindrical heating element 13, a linear electric heater 13h is spirally arranged in a cylindrical body 13a formed of a heat-resistant material.

図１に示すように、加熱装置１０の収容部材１２内に収容された被加熱物Ｗは、円筒状発熱体１３によって昇温した収容部材１２からの輻射熱と、収容部材１２内を軸心１２ｃ方向に沿って一定方向（後壁部１１ｗから扉１１ｄの内面側の壁板１６に向かう方向）に流動する高温の気体流Ｒと、によって加熱される。これにより、収容部材１２内の一定温度領域を広く確保することができるため、収容部材１２内に収容された被加熱物Ｗ全体をムラなく均等に加熱することができ、加熱効率も良好である。   As shown in FIG. 1, the object to be heated W accommodated in the accommodating member 12 of the heating device 10 is radiated heat from the accommodating member 12 heated by the cylindrical heating element 13 and the axis 12c in the accommodating member 12. Heated by a high-temperature gas flow R flowing in a certain direction along the direction (a direction from the rear wall portion 11w toward the wall plate 16 on the inner surface side of the door 11d). Thereby, since the fixed temperature range in the accommodating member 12 can be secured widely, the entire article to be heated W accommodated in the accommodating member 12 can be heated evenly, and the heating efficiency is also good. .

図１に示すように、収容部材１２内を軸心１２ｃ方向に沿って後壁部１１ｗから扉１１ｄに向かって流動する高温の気体流Ｒは、収容部材１２の前方開口部１２ｆを出て扉１１ｄの内面側にある壁板１６ｄに当接して軸心１２ｃを中心に放射状にＵターンした後、収容部材１２の外周面１２ａと円筒状発熱体１３の内周面１３ｂとの隙間Ｖに流入する。隙間Ｖに流入した気体流Ｐは隙間Ｖに沿って後壁部１１ｗに向かって流動しながら円筒状発熱体１３によって加熱され、後壁部１１ｗに当接する。後壁部１１ｗに当接した気体流Ｐは送風ファン１４の回転軸１４ａに向かって集合するようにＵターンした後、送風ファン１４の回転によって後方開口部１２ｒから再び収容部材１２内へ送り込まれる。   As shown in FIG. 1, the high-temperature gas flow R flowing from the rear wall portion 11 w toward the door 11 d along the axis 12 c in the housing member 12 exits the front opening 12 f of the housing member 12 and opens the door. After abutting the wall plate 16d on the inner surface side of 11d and making a U-turn radially around the axis 12c, it flows into the gap V between the outer peripheral surface 12a of the housing member 12 and the inner peripheral surface 13b of the cylindrical heating element 13 To do. The gas flow P flowing into the gap V is heated by the cylindrical heating element 13 while flowing toward the rear wall portion 11w along the gap V, and comes into contact with the rear wall portion 11w. The gas flow P in contact with the rear wall portion 11w makes a U-turn so as to gather toward the rotating shaft 14a of the blower fan 14, and then is sent again into the housing member 12 from the rear opening 12r by the rotation of the blower fan 14. .

このように、送風ファン１４により、収容部材１２内を後方開口部１２ｒから前方開口部１２ｆに向かって流動する気体流Ｒと、扉１１ｄの内面側の壁板１６から後壁部１１ｗに向かって隙間Ｖ内を流動する気体流Ｐと、からなる循環気体流がケーシング１１内に形成されるため、被加熱物Ｗ全体を均一加熱する上で有効に作用する。   As described above, the blower fan 14 causes the gas flow R flowing in the housing member 12 from the rear opening 12r toward the front opening 12f, and the wall plate 16 on the inner surface side of the door 11d toward the rear wall 11w. Since a circulating gas flow composed of the gas flow P flowing in the gap V is formed in the casing 11, it effectively acts to uniformly heat the entire article to be heated W.

また、ケーシング１１内に、被加熱物Ｗを収容する収容部材１２と、その外周面１２ａから隙間Ｖを隔てて配置された円筒状発熱体１３と、収容部材１２内の軸心１２ｃ方向の気体流Ｒを発生させる送風ファン１４と、を配置した構成であるため、構造は簡素であり、清掃その他のメンテナンスも容易である。   In addition, the housing member 12 that accommodates the article to be heated W, the cylindrical heating element 13 that is disposed with a gap V from the outer peripheral surface 12a in the casing 11, and the gas in the direction of the axis 12c in the housing member 12 Since the blower fan 14 that generates the flow R is arranged, the structure is simple and cleaning and other maintenance are easy.

また、発熱手段として、収容部材１２の外周面１２ａを囲繞する円筒状発熱体１３を配置したことにより、収容部材１２全体を均等加熱することができるため、収容部材１２内の一定温度領域が広がり、収容部材１２内に収容された被加熱物Ｗに対する均等加熱機能が向上する。   In addition, since the cylindrical heating element 13 surrounding the outer peripheral surface 12a of the housing member 12 is disposed as the heat generating means, the entire housing member 12 can be heated uniformly, so that a constant temperature region in the housing member 12 is expanded. And the equal heating function with respect to the to-be-heated material W accommodated in the accommodating member 12 improves.

この場合、収容部材１２の軸心１２ｃと、円筒状発熱体１３との軸心１３ｃとが同軸をなすように配置したことにより、図２に示すように、収容部材１２の外周面１２ａのどの位置においても当該外周面１２ａと円筒状発熱体１３の内周面１３ｂとの隙間Ｖが常に一定となるため、収容部材１２に対する均等加熱機能が高まり、収容部材１２内の被加熱物Ｗに対する均等加熱機能がさらに向上する。   In this case, since the shaft center 12c of the housing member 12 and the shaft center 13c of the cylindrical heating element 13 are arranged so as to be coaxial with each other, as shown in FIG. Even in the position, the gap V between the outer peripheral surface 12a and the inner peripheral surface 13b of the cylindrical heating element 13 is always constant, so that the equal heating function for the housing member 12 is enhanced, and the uniform heating target W in the housing member 12 is increased. The heating function is further improved.

一方、送風手段として、電動機１５によって回転駆動される送風ファン１４を設けたことにより、収容部材１２内にその軸心１２ｃ方向に沿った一定方向の気体流Ｒを容易かつ安定的に発生させることができるため、均等加熱機能の向上に有効である。また、電動機１５の回転数を変化させて送風ファン１４の回転数を増減させることにより、収容部材１２内を流動する気体流Ｒの流速や流量なども調節できるので、被加熱物Ｗに応じた加熱条件を設定することができる。また、必要であれば、電動機１５の回転方向を変更させることにより、送風ファン１４を逆転させることもできる。   On the other hand, by providing the blower fan 14 that is rotationally driven by the electric motor 15 as the blower means, it is possible to easily and stably generate a gas flow R in a certain direction along the axis 12c in the housing member 12. Therefore, it is effective in improving the uniform heating function. Further, by changing the number of rotations of the electric motor 15 to increase or decrease the number of rotations of the blower fan 14, the flow rate or flow rate of the gas flow R flowing in the housing member 12 can be adjusted. Heating conditions can be set. If necessary, the blower fan 14 can be reversed by changing the rotation direction of the electric motor 15.

前述したように、加熱装置１０は、収容部材１２内に温度分布が一定な領域を広く確保することができるので、収容部材１２内に収容された被加熱物Ｗ全体をムラなく均等に加熱することができ、材料試験に使用される供試体の加熱手段などとしても好適に使用することができる。   As described above, the heating device 10 can ensure a wide region having a constant temperature distribution in the housing member 12, and thus uniformly heats the entire article to be heated W housed in the housing member 12 without unevenness. It can be suitably used as a heating means for a specimen used for a material test.

本発明の加熱装置は、材料試験用の供試体や各種機械部品などを加熱する手段として、工業分野において広く利用することができる。   The heating device of the present invention can be widely used in the industrial field as means for heating a specimen for material testing, various machine parts, and the like.

１０ 加熱装置
１１ ケーシング
１１ａ 断熱材
１１ｂ 開口部
１１ｄ 扉
１１ｗ 後壁部
１２ 収容部材
１２ａ 外周面
１２ｃ，１３ｃ 軸心
１２ｆ 前方開口部
１２ｒ 後方開口部
１３ 円筒状発熱体
１３ａ 円筒体
１３ｂ 内周面
１３ｈ 電気ヒータ
１４ 送風ファン
１４ａ 回転軸
１５ 電動機
１５ａ 駆動軸
１６ 壁板
１６ａ スペーサ
Ｖ 隙間
Ｐ，Ｒ 気体流
Ｗ 被加熱物 DESCRIPTION OF SYMBOLS 10 Heating device 11 Casing 11a Heat insulating material 11b Opening part 11d Door 11w Rear wall part 12 Housing member 12a Outer peripheral surface 12c, 13c Axis center 12f Front opening part 12r Rear opening part 13 Cylindrical heating element 13a Cylindrical body 13b Inner peripheral surface 13h Electricity Heater 14 Blower fan 14a Rotating shaft 15 Electric motor 15a Drive shaft 16 Wall plate 16a Spacer V Gap P, R Gas flow W Heated object

Claims (4)

断熱材で形成されたケーシング内に、被加熱物を収容する筒状の収容部材と、前記収容部材の外周面から隙間を隔てて配置された発熱手段と、前記収容部材内にその軸心方向に沿った一定方向の気体流を発生させる送風手段と、を備えたことを特徴とする加熱装置。   In a casing formed of a heat insulating material, a cylindrical housing member that accommodates an object to be heated, a heat generating means disposed with a gap from an outer peripheral surface of the housing member, and an axial direction in the housing member And a blowing means for generating a gas flow in a certain direction along the heating device. 前記発熱手段として、前記収容部材の外周面を囲繞する筒状発熱体を配置した請求項１記載の加熱装置。   The heating apparatus according to claim 1, wherein a cylindrical heating element surrounding the outer peripheral surface of the housing member is disposed as the heating means. 前記収容部材の軸心と、前記筒状発熱体との軸心とが同軸をなすように配置した請求項２記載の加熱装置。   The heating apparatus according to claim 2, wherein the axis of the housing member and the axis of the cylindrical heating element are arranged so as to be coaxial. 前記送風手段として、電動機によって回転駆動される送風ファンを設けた請求項１〜３のいずれかに記載の加熱装置。   The heating apparatus according to any one of claims 1 to 3, wherein a blowing fan that is rotationally driven by an electric motor is provided as the blowing means.
JP2010093016A 2010-04-14 2010-04-14 Heating apparatus Pending JP2011220649A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013115433A1 (en) * 2012-02-03 2013-08-08 Song Deok Soo Wheel frame and two-wheeled-vehicle tyre production method using same
JP7236174B1 (en) * 2021-04-20 2023-03-09 株式会社九州日昌 heating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013115433A1 (en) * 2012-02-03 2013-08-08 Song Deok Soo Wheel frame and two-wheeled-vehicle tyre production method using same
JP7236174B1 (en) * 2021-04-20 2023-03-09 株式会社九州日昌 heating device
US11646647B2 (en) 2021-04-20 2023-05-09 Kyushu Nissho Co., Ltd. Heating apparatus

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