201208494 六、發明說明： 【發明所屬之技術領域】 本發明，係有關於利用感應加熱來將熱媒體加熱之感 應加熱裝置、以及具備有此之發電系統。 【先前技術】 作爲加熱水的裝置，係提案有利用感應加熱（渦電流 )之加熱裝置（例如，參考專利文獻1 )»專利文獻1所 記載之渦電流加熱裝置，係具備有：於外周配置有永久磁 石之可旋轉的轉子、和被固定設置在此轉子之外周並於內 部被形成有流通水之流通路徑的導電材料之加熱部。而後 ，藉由使轉子轉動，由轉子外周之永久磁石所致的磁力線 係貫通加熱部而移動，藉由此，在加熱部處係產生渦電流 ，而加熱部本身係發熱。其結果，藉由加熱部所產生了的 熱，係傳導至在內部之流通路徑中所流通的水，而水係被 加熱。 上述之技術，主要係以利用風力等之能量來進行熱水 之供給一事作爲目的，但是，近年來，同樣利用有風力、 水力、海浪力等之可再生之能量的發電系統，係備受矚目 〇 例如，在非專利文獻1〜3中，係記載著有關於風力 發電之技術。風力發電系統，係以風來使風車旋轉，並驅 _· 動發電機而進行發電者，並爲將風之能量變換爲旋轉能量 . 以作爲電性能量來取出者。風力發電系統，其一般之構造 201208494 ’係在塔之上部設置短艙（nacelle)，並在此短艙上安裝 有水平軸風車（旋轉軸爲相對於風的方向而略平行之風車 )。在短艙處，係收容有將風車之旋轉軸的旋轉速增速並 輸出之增速機、和經由增速機之輸出而被驅動之發電機。 增速機，係爲將風車之旋轉數一直提升至發電機之旋轉數 (例如1 : 1 00 )者，並被組入有齒輪箱。 最近，爲了降低發電成本，係有將風車大型化的傾向 ，而風車直徑爲120m以上、每一機之輸出爲5MW層級 的風力發電系統係被實用化。此種大型之風力發電系統， 由於係爲巨大且極具重量者，因此，在建設上的觀點來看 ，多係被建設在海上。 又，在風力發電中，由於伴隨著風力之變動，發電輸 出（發電量）亦會變動，因此，係進行有：在風力發電系 統處倂設有蓄電系統，而將不安定之電力積蓄在蓄電池中 ，並將輸出平滑化。 [先前技術文獻] [專利文獻] [專利文獻1]日本特開2005-1 7480 1號公報 [非專利文獻] [非專利文獻1]”風力發電（0 1 -05-0 1 -05 ) ”、〔 online〕，原子力百科辭典AT OMICA〔平成22年3月12 曰檢索，網際網路<URL : httP ://www.rist.or.jp/atomica/>201208494 6. TECHNOLOGICAL FIELD OF THE INVENTION The present invention relates to an induction heating device that heats a heat medium by induction heating, and a power generation system including the same. [Prior Art] An eddy current heating device described in Patent Document 1 is proposed as a heating device that uses induction heating (eddy current) (see, for example, Patent Document 1). A rotatable rotor having a permanent magnet and a heating portion of a conductive material fixed to the outer circumference of the rotor and having a flow path through which water flows is formed. Then, by rotating the rotor, the magnetic flux caused by the permanent magnet on the outer circumference of the rotor moves through the heating portion, whereby an eddy current is generated in the heating portion, and the heating portion itself generates heat. As a result, the heat generated by the heating portion is conducted to the water flowing through the internal flow path, and the water is heated. The above-mentioned technology is mainly for the purpose of supplying hot water by using energy such as wind power. However, in recent years, a power generation system that uses renewable energy such as wind power, water power, and wave power is also attracting attention. For example, in Non-Patent Documents 1 to 3, a technique relating to wind power generation is described. In a wind power generation system, a wind turbine is used to rotate a windmill, and a generator is driven by a generator to convert the energy of the wind into rotational energy. The electric energy is extracted as electrical energy. Wind power generation system, its general structure 201208494 ' is a nacelle installed above the tower, and a horizontal axis windmill is installed on this nacelle (the rotating shaft is a windmill that is slightly parallel with respect to the direction of the wind). In the nacelle, a speed increaser that increases the rotational speed of the rotating shaft of the windmill and outputs it, and a generator that is driven via the output of the speed increaser are housed. The speed increaser is to increase the number of revolutions of the windmill to the number of revolutions of the generator (for example, 1:00), and is incorporated into the gearbox. Recently, in order to reduce the power generation cost, there is a tendency to increase the size of the windmill, and a wind power generation system in which the diameter of the windmill is 120 m or more and the output of each machine is 5 MW is practical. Since such a large-scale wind power generation system is huge and extremely heavy, many constructions are built at sea from the viewpoint of construction. In the wind power generation, the power generation output (power generation amount) also fluctuates due to fluctuations in the wind power. Therefore, the power storage system is installed in the wind power generation system, and the unstable power is stored in the battery. Medium and smooth the output. [Prior Art Document] [Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-1 7480 No. 1 [Non-Patent Document] [Non-Patent Document 1] "Wind Power Generation (0 1 -05-0 1 -05 )" , [ online ] , Atomic Encyclopedia Dictionary AT OMICA [March 12, 2012 曰 Search, Internet < URL: httP ://www.rist.or.jp/atomica/>
[非專利文獻 2]”SUBARU風力發電系統 SUBARU 201208494 WIND TURBINE” 、( online ]，富士重工業股份有限公 司、〔平成22年3月12日檢索〕，網際網路<URL : http://www.subaru-windturbine.jp/windturbine/> [非專利文獻3]”風力講座’〔online〕，三菱重工業股 份有限公司、〔平成22年3月12日檢索〕、網際網路 <URL : http://www.mhi.co.jp/products/expand/wind_kouza.html> [非專利文獻4]木村守，「特集朝向大容量化發展 之風力發電2大容量風力發電用發電機之特性比較」， 電氣學會誌（IEEJ Journal ) ，2 0 0 9，ν ο 1 · 1 2 9，N 〇 · 5， p.228-290 【發明內容】 [發明所欲解決之課題] 但是，在上述之專利文獻1所記載之先前技術的感應 加熱裝置中，由於係在產生磁通量（磁力線）之磁場產生 手段中使用有永久磁石，因此，係可能產生下述一般之問 題。 感應加熱能量，係與磁場之強度（Η )的平方成正比 ，但是，在永久磁石的情況時，由於一般而言其能夠產生 之磁場係爲弱，因此係無法得到充分之感應加熱能量，而 有著無法將熱媒體（例如水等之液體）加熱至所期望的溫 度之虞。 又，雖然爲了得到強力之磁場，亦可考慮使用钕磁石 (特別是，參考專利文獻1之段落0037 )，但是，鈸磁 201208494 石之熱耐性係爲差，若是溫度上升，則磁性特性係會降低 (此事，對於一般性之鐵氧體磁石而言，亦爲相同）。因 此，在將永久磁石配置在接近於加熱部之位置處的先前技 術之感應加熱裝置中，永久磁石之溫度係容易上升，並使 磁性特性降低，其結果，係會有無法將熱媒體加熱至所期 望的溫度之虞。進而，永久磁石，由於係會隨著時間的經 過而使磁性特性劣化，因此，係有著無法耐住長時間的使 用之虞。另外，爲了防止由於熱所導致之磁性特性的降低 (劣化），係亦可考慮以將永久磁石之外周作覆蓋的方式 來設置絕熱材。然而，於此情況，由於絕熱材通常係爲非 磁性體，因此，在永久磁石和加熱部之間的磁性間隙係會 變大，而通過加熱部之磁通量係減少，因此，會使感應加 熱之效率降低。 另一方面，在一般所廣爲週知之風力發電系統中，爲 了將輸出平滑化，係設置有蓄電系統，但是，在蓄電系統 中，由於係將電力積蓄在蓄電池中，因此係需要換流器等 之零件，而導致系統之複雜化、電力損失之增大。又，在 大型之風力發電系統的情況時，因應於發電量，係需要大 容量的蓄電池，而導致作爲系統全體之成本的增大。 又，風力發電系統之多數的故障原因，係爲由增速機 (具體而言，齒輪箱）之故障所導致者。若是齒輪箱故障 ，則通常係以將齒輪箱作交換來作對應，但是，當將齒輪 箱收容在被設置於塔之上部的短艙中的情況時，在齒輪箱 之安裝、卸下時會耗費莫大的時間和勞力。因此，最近， -8- 201208494 係亦存在有不需要增速機之無齒輪的可變速式風力發電機 0 然而，在無齒輪的情況時，具體而言，係以增加發電 機之極數（多極發電機）來作對應，但是，相較於使用增 速機之情況，發電機係會大型化、重量化。特別是，在 5MW層級之大型的風力發電系統中，會有發電機之重量 爲超過300噸（300000kg)的情況（參考非專利文獻4之 表2)，而難以將其配置在短艙內。 本發明，係爲有鑑於上述之事態所進行者，其中一個 目的，係在於提供一種具備適於將熱媒體加熱之性能的感 應加熱裝置。又，另外一個目的，係在於提供一種具備有 上述之感應加熱裝置的發電系統。 [用以解決課題之手段] 本發明之感應加熱裝置，係爲將熱媒體加熱之裝置， 其特徵爲，具備有：具有旋轉軸之旋轉體、和磁性體片、 和軛片、和一對之磁性體凸部、和加熱部、和配管、以及 線圈。磁性體片，係爲被固定在旋轉體上之長條的構件。 軛片，係爲與磁性體片空出有間隔地作配置，並與磁性體 片相對向之長條的構件。一對之磁性體凸部，係爲被形成 在磁性體片和軛片之至少其中一方處，並從兩端部起來朝 向另外一方突出之構件。加熱部，係爲至少一部份由導電 材料所成之環狀的構件，並以環狀來包圍軛片之外周地來 作配置。配管，係被設置在加熱部處，並供熱媒體流通。 201208494 線圈’係以當磁性體片和軛片相互對向時而通過由磁性體 片、一對之磁性體凸部以及軛片所包圍之空間的方式，而 被作捲繞。 若依據本發明之感應加熱裝置，則由於係在磁場產生 手段中使用有線圈，因此，相較於先前技術之使用有永久 磁石的裝置，係能夠安定地產生更強力的磁場（磁通量密 度）。具體而言，藉由將線圈處所通電之電流增大，能夠 產生強力的磁場，藉由對於通電電流作控制，亦能夠對於 磁場之強度作調整。又，若是採用線圈，則相較於永久磁 石，係難以發生由於溫度上升所導致之磁性特性的降低或 者是歷時性之磁性特性的劣化。故而，藉由在磁場產生手 段處使用線圈，係易於對通電電流作控制並維持充分之磁 場強度，而能夠得到足以將加熱部（熱媒體）加熱至特定 之溫度（100°c以上之高溫，例如100°c〜600°c )之充分 的性能（熱能量）。另外，係可列舉出在線圈處流動直流 電流並產生直流磁場的形態。 又，在本發明之感應加熱裝置中，藉由將配管設置在 並不作旋轉而被作了固定的加熱部處，在與配管相通連並 從外部而將熱媒體作供給、排出之供排管和配管之間的連 接中，係並不需要使用容許配管之轉動的旋轉接頭。因此 ，係能夠藉由簡易的構成來實現堅牢的連接。具體而言， 若是熱媒體被作加熱，則配管內之壓力係上升，例如當熱 媒體爲水（蒸氣）的情況時，於600 °C下係會達到約 25MPa ( 250大氣壓）。當加熱部（配管）作旋轉的情況 -10- 201208494 時，係需p能夠耐住該壓力之特殊的旋轉接頭，但是，當 並不作旋轉的情況時，係並不需要旋轉接頭，而能夠藉由 採用例如將供排管和配管作熔接一般之單純的方法，來實 現充分之堅牢的構造。 針對本發明之感應加熱裝置中的熱媒體之加熱機制作 說明。在本發明之裝置中，係藉由對於線圈通電，而產生 電流所流動之方向的右旋轉之磁場，並在磁性體片、軛片 以及一對之磁性體凸部處產生磁通量，而形成磁性迴路。 具體而言，當磁性體片和軛片相互對向時，係形成磁性體 片—一對之磁性體凸部―軛片—另外一方之磁性體凸部— 磁性體片之磁性迴路。而後，藉由使旋轉體旋轉，當磁性 體片和軛片相互對向並近接時，磁性迴路中之磁性間隙係 變小，在磁性迴路中所流動之磁通量係增加。另一方面， 當磁性體片和軛片相互遠離時，磁性迴路中之磁性間隙係 變大，因此，在磁性迴路中所流動之磁通量係減少。故而 ’藉由使旋轉體旋轉*在範片處所流動之磁通量係改變， 因此，在被配置於軛片之外周的環狀之加熱部處，係產生 感應起電力（逆起電力），並在加熱部處產生感應電流， 藉由此，加熱部係被加熱，並將熱媒體加熱。 磁性體片，係只要至少有1個即可，亦可在旋轉體之 周方向上作複數個的並排設置。軛片，亦係只要至少有1 個即可，亦可在旋轉體之外周側處而於周方向上作複數個 的並排設置。磁性體片和軛片之數量，係可爲相同，亦可 爲相異。又，當將磁性體片或軛片作複數個並排設置的情 -11 - 201208494 況時，較理想，係設爲4個以上，並在周方向上作等間隔 設置。被形成在磁性體片和軛片之至少一方處的磁性體凸 部之形狀，係並不特別限定。 在本發明中，磁性體片、軛片以及磁性體凸部，係均 爲至少一部份爲由磁性材料所成，作爲所使用之磁性材料 ，例如，係可列舉出鐵、鎳、鈷、矽鋼、高導磁合金以及 鐵氧體等。又，作爲在加熱部中所使用之導電材料，例如 ，係可列舉出鋁或銅、鐵等之金屬。特別是，藉由在加熱 部處使用鋁，係能夠謀求加熱部之輕量化，故而係能夠謀 求裝置之輕量化。作爲熱媒體，例如，係可列舉出水、油 、液體金屬（Na、Pb等）、熔融鹽等之液體 '以及氣體 〇 作爲本發明之感應加熱裝置的其中一種形態，係可列 舉出線圈爲超電導線圈的構成。 作爲線圈，係可列舉出銅線等之常電導線圈或者是使 用有超電導線材之超電導線圈。當在線圈處流動直流電流 並使直流磁場產生的情況時，若是超電導線圈，則電阻係 爲0，就算是流動大電流，在線圏處實質上係不會產生發 熱（損失）。因此，若依據上述構成，則相較於常電導線 圈，係能夠對由於流動大電流一事所導致之線圈的發熱（ 損失）作抑制，而能夠無電力損失地來維持極強之磁場。 作爲本發明之感應加熱裝置的其中一種形態，係可列 舉出具備有將軛片之與磁性體片側相反側的面作覆蓋之絕 熱部的構成。 -12- 201208494 在本發明中，爲了不使加熱部之熱逸散，亦可設爲將 加熱部之周圍藉由絕熱材來作覆蓋，但是，於此情況，加 熱部之剖面積，會減少由於絕熱材所佔據之面積的量。相 對於此，若依據上述構成，則藉由將軛片藉由絕熱部來作 覆蓋，由於係能夠對於從裝置而來之放熱作抑制，並確保 加熱部之保溫性，因此，係能夠將覆蓋加熱部之周圍的絕 熱材作省略或者是設爲更薄。因此，由於係能夠將加熱部 周圍之絕熱材省略或者是設爲更薄，因此，係能夠將加熱 部之剖面積增大，而能夠謀求裝置之小型、輕量化。 作爲本發明之感應加熱裝置的其中一種形態，係可列 舉出具備有保護前述線圈免於受到前述加熱部之熱的影響 之耐熱部的構成。 若是加熱部被加熱，則當線圈被配置在離加熱部爲近 之位置處的情況時，由於加熱部之熱，線圈之溫度係會上 升。又，可以想見，就算是將線圈配置在距離加熱部爲遠 的位置處，亦會由於從加熱部而透過軛片等之構件所傳導 而來之熱，而導致線圈之溫度上升。若是線圈之溫度上升 ，則會有導致線圈之電性特性降低等的不良影響之情形。 特別是，如同上述一般，由於係可能會將覆蓋加熱部之周 圍的絕熱材作省略或者是設爲較薄，因此，會有使該影響 更加變大之虞。因此，若依據上述構成，則係能夠對於起 因於加熱部被加熱一事所導致的線圈之溫度上升作防止， 而能夠使線圏成爲難以受到從加熱部而來之熱影響。 作爲本發明之各感應加熱裝置的其中一種形態，係可 -13- 201208494 列舉出將旋轉軸與風車作連接，並在使旋轉體作旋轉之動 力中利用風力的形態。 在本發明之感應加熱裝置中，在旋轉體（旋轉軸）之 動力中，雖然亦可使用電動機或引擎等之內燃機關，但是 ，較理想，係使用風力、水力、海浪力等之可再生的能量 。若是利用可再生能量，則係能夠抑制C 0 2之增加，其中 5又以利用風力爲適合9 本發明之發電系統，其特徵爲，係具備有上述之本發 明的感應加熱裝置；和將藉由此感應加熱裝置所加熱了的 熱媒體之熱變換爲電性能量之發電部。 本發明之發電系統，係爲將利用上述之感應加熱裝置 所加熱的熱媒體之熱利用在發電中者，而爲於先前技術中 所並未存在之嶄新的發電系統。例如，若是將感應加熱裝 置之旋轉軸與風車相連接，並將風力利用在旋轉體之動力 中，則能夠將風之能量變換爲旋轉能量再變換爲熱能量， 並作爲電性能量來取出。而，若依據本發明之發電系統， 則藉由設爲將熱變換爲電性能量之構成，係能夠藉由使用 蓄熱器來將能量作爲熱而積蓄，來實現效率良好且爲安定 之發電。又，能夠將熱積蓄在蓄熱器中並且將發電中所需 要之熱取出的蓄熱系統，相較於蓄電系統，係爲簡單，且 蓄熱器亦爲相較於蓄電池而爲低價者。進而，係並不需要 如同先前技術之風力發電系統一般而設置增速機，而能夠 避免由於齒輪箱所造成的問題。 -14 - 201208494 [發明之效果] 本發明之感應加熱裝置，由於係在磁場產生手段中使 用有線圈，因此，將熱媒體加熱至1 〇〇°c以上之高溫一事 ，係爲容易。又，本發明之發電系統，係爲將利用上述之 感應加熱裝置所加熱的熱媒體之熱利用在發電中者，而爲 於先前技術中所並未存在之嶄新的發電系統。 【實施方式】 使用圖面，對於本發明之實施形態作說明。另外，圖 中，相同符號係代表相同或者是相當之部分。 〈感應加熱裝置〉 (實施形態1 ) 圖1中所示之實施形態1的感應加熱裝置1 0 1，係具 備有旋轉體11、和軛12、和加熱部13、和配管14、以及 線圏1 5。以下，使用圖1〜7，對於感應加熱裝置1 0 1之 構成作.詳細說明。另外，於圖1、6中，係僅對於加熱部 而以剖面來作展示。 旋轉體11，係具備有被可旋轉地作支持之旋轉軸21 ，並由藉由從此旋轉軸21而以輻射狀來延伸之支持構件 115所支持的筒狀之構件（參考圖2、3)。又，在旋轉體 11之外周面兩端部處，係被一體性地形成設置有朝向旋 轉體Π之徑方向外側突出並且在旋轉體11之軸方向上並 排的一對之第1磁性體凸部1 1 1 a、1 1 1 b。在此例中，係 -15- 201208494 將於軸方向上並排的一對之第1磁性體凸部Ilia、lllb 作爲一組，並將此在周方向上空出有等間隔地來作了複數 組（於此情況，係爲1 8組）之並排設置。又，此旋轉體 1 1，係亦包含第1磁性體凸部1 1 1 a、1 1 1 b地而由磁性材 料所成，在此例中，係藉由鐵而形成。亦即是，於此情況 中，旋轉體11，可以說是將在旋轉體11之軸方向上延伸 並從兩端部而突出有第1磁性體凸部111a、111b的長條 狀之磁性體片1 1 〇作了複數連結並以使複數之磁性體片 110呈現圓筒狀的方式來作配置而作了 一體化者。另外， 於此，旋轉體1 1，係設爲在從旋轉軸2 1側來作觀察時而 於逆時針方向上作旋轉者（圖1(A)中之箭頭，係代表 旋轉方向，圖6亦同）》 軛12,係爲在旋轉體11之外周側處，而與旋轉體11 之間空出有特定間隔地來作配置之筒狀的構件，並以與旋 轉體Π之外周面相對向的方式，而被配置爲同心狀（參 考圖2、3)。又，在軛12之內周面兩端部處，係以與上 述之旋轉體Π的第1磁性體凸部111a、111b相對應的方 式，而被一體性地形成設置有朝向旋轉體1 1側突出並且 在旋轉體11之軸方向上並排的一對之第2磁性體凸部 121a、121b。在此例中，係將於軸方向上並排的一對之第 2磁性體凸部121a、121b作爲一組，並將此在周方向上 空出有等間隔地來作了複數組（於此情況，係爲1 8組） 之並排設置。又，此軛12，係亦包含第2磁性體凸部 1 2 1 a、1 2 1 b地而由磁性材料所成，在此例中，係藉由鐵 -16- 201208494 而形成。亦即是，於此情況中，軛12，可以說是將在旋 轉體11之軸方向上延伸並從兩端部而突出有第2磁性體 凸部121a、121b的長條狀之軛片120作了複數連結並以 使複數之軛片120呈現圓筒狀的方式來作配置而作了一體 化者。於此，軛12,係以並不作旋轉的方式而被固定。 第1磁性體凸部111a、111b和第2磁性體凸部121a 、121b，係均爲朝向旋轉體11之周方向的側面爲與旋轉 體11之軸方向相平行的面、並且在與突出方向相正交的 方向上作了切斷時之剖面爲略矩形狀之四角柱狀者。 加熱部13，係爲以環狀來將上述之軛片120的第2 磁性體凸部121a、121b之外周作包圍地作配置的環狀之 構件（參考圖4 )。亦即是，加熱部13，係當將軛片120 (於此情況，係亦包含一對之第2磁性體凸部121a、 121b)之長邊方向作爲軸時，而以環狀來將其之周方向作 包圍地作配置。此加熱部1 3，係由導電材料所成，於此 例中，係藉由鋁所形成。又，於此例中，係以不會使熱從 加熱部13而逸散的方式，而將加熱部13之周圍藉由絕熱 材1 3 i來作了覆蓋。在絕熱材1 3 i中，例如係可使用石綿 、玻璃石綿、發泡塑膠、紅磚、陶瓷等。 在各加熱部13處，係被設置有流通有熱媒體之配管 1 4 (參考圖1 ( A ))。於此例中，在各加熱部1 3處，係 被設置有沿著旋轉體11之軸方向而作貫通的貫通孔，並 以通過被配置在於軸方向上作並排之一對的第2磁性體凸 部121a、121b處之前後的加熱部13之各貫通孔的方式， -17- 201208494 而被插通有配管14。而，加熱部13和配管14係被作熱 性連接。又，例如，在此例中，係可列舉出：設爲從配管 1 4之其中一端側來供給熱媒體並從另外一端側而排出之 構成，或者是設爲在配管14之其中一端側處，安裝將配 管14和其他配管14作連接之連接管，並從配管14之另 外一端側來供給熱媒體，而透過連接管來從其他的配管 14之另外一端側而排出之構成。亦即是，前者之情況， 係爲單方向流路，後者之情況，則係成爲往返流路，相較 於前者之情況，係以後者之情況而能夠將熱媒體之加熱距 離更爲增長。 線圈15，係以當在兩端部處被形成有一對之第1磁 性體凸部111a、111b的磁性體片110和在兩端部處被形 成有一對之第2磁性體凸部121a、121b的軛片120相互 對向時，而通過被磁性體片11〇(旋轉體11)、一對之第 1磁性體凸部1 1 1 a、1 1 1 b、一對之第2磁性體凸部1 2 1 a 、121b以及軛片120(軛12)所包圍之空間內的方式， 而被作捲繞（參考圖1)。於此例中，線圏15，係被配置 在旋轉體Π和軛1 2之間的環狀空間中，並與旋轉體1 1 空出有間隔地而被固定在軛1 2側。又，此線圈1 5，係爲 常電導之銅線圈，在線圈15處，係被連接有未圖示之直 流電源。於此，係將在線圏1 5處所通電之直流電流的方 向，設爲與旋轉體11之旋轉方向相同的方向（圖4中之 箭頭，係代表電流所流動之方向）。 接著，針對在感應加熱裝置101中的熱媒體之被加熱 -18- 201208494 的機制作詳細說明。 在感應加熱裝置101處，若是線圈15被通電，則在 電流所流動之方向（於圖1 ( B )之情況，係爲從紙面而 朝向深處的方向）的右旋轉方向上產生磁場，並在磁性體 片110' —對之第1磁性體凸部111a、111b、一對之第2 磁性體凸部121a、121b以及軛片120處流動有磁通量， 而形成磁性迴路（圖1 ( B )之點線箭頭，係爲磁通量之 流動的示意圖）。具體而言，當磁性體片110( —對之第 1磁性體凸部1 1 1 a、1 1 1 b )和軛片1 2 0 ( —對之第2磁性 體凸部121a、121b)相對向時，係形成通過磁性體片110 —其中一方之第1磁性體凸部111a—其中一方之第2磁 性體凸部12U—軛片120—另外一方之第2磁性體凸部 12 1b->另外一方之第1磁性體凸部illb-磁性體片110 的磁性迴路。而後，藉由使旋轉體11旋轉，當磁性體片 1 1 〇和軛片1 2 0相互對向並近接時，磁性迴路中之磁性間 隙係變小，在磁性迴路中所流動之磁通量係增加。另一方 面，當磁性體片1 1 0和軛片1 20相互遠離時，磁性迴路中 之磁性間隙係變大，因此，在磁性迴路中所流動之磁通量 係減少。故而，藉由旋轉體11之旋轉，在軛片120中所 流動之磁通量係週期性地改變，因此，在被配置於軛片 1 2 0之第2磁性體凸部1 2 1 a、1 2 1 b的外周之環狀的加熱 部13處，係產生感應起電力（逆起電力）。其結果，在 加熱部1 3處係產生有感應電流，加熱部1 3係被加熱’配 管1 4內之熱媒體係被加熱。 -19- 201208494 圖5，係爲對於在感應加熱裝置101中而使旋轉體11 作了旋轉時之於第1磁性體凸部1 1 1 a、1 1 1 b和第2磁性 體凸部121a、121b之間所產生的磁場（磁通量密度）T 之時間性變化作模式性展示的圖。磁場Τ，係如圖1 ( a )中所示一般，當磁性體片HO和軛片120相互對向而第 1磁性體凸部-第2磁性體凸部間之間隙長成爲最小時， 係成爲極大且爲最大。另一方面，如圖6中所示一般，當 藉由旋轉體1 1之旋轉（於此情況，係爲1 )，而使得磁 性體片1 10和軛片120相互偏移，且第1磁性體凸部-第 2磁性體凸部間之間隙長成爲最大時，係成爲極小且爲最 小。 在上述之感應加熱裝置101中，雖係將線圈15爲常 電導線圈的情況作爲例子來作了說明，但是，線圈1 5係 亦可爲超電導線圈。藉由採用超電導線圈，係能夠產生更 強的磁場。 又，在上述之感應加熱裝置101中，具備有第1磁性 體凸部111a、111b之對的磁性體片110、以及具備有第2 磁性體凸部121a、121b之對的軛片120，其兩者之數量 ，係可分別適宜作設定。於此，藉由將磁性體片11 〇之數 量作某種程度的增加，係能夠將在軛片1 20處所流動之磁 通量的變化週期縮短。感應加熱能量，由於係與磁通量之 頻率存在有正比關係，因此，藉由將週期縮短，係能夠將 加熱效率提升》 進而，在上述之感應加熱裝置101中’關於第2磁性 -20- 201208494 體凸部121a、121b的形狀，係以成爲在與突出方向相正 交之方向上作了切斷時的剖面爲略矩形狀之四角柱狀的情 況爲例來作了說明，但是，係並不被限定於此。例如，亦 可採用使第2磁性體凸部121a、121b之側面相對於旋轉 體11之軸方向而作了傾斜的偏斜構造。藉由採用偏斜構 造，係能夠降低齒槽效應轉矩（Cogging Torque)，而使 旋轉體Π之旋轉成爲順暢。又，亦可將旋轉體11之第1 磁性體凸部111a、111b設爲偏斜構造。 除此之外，在上述之感應加熱裝置1 0 1中，雖係針對 將旋轉體11亦包含有第1磁性體凸部111a、111b地而藉 由磁性材料來一體性地形成的情況爲例而作了說明，但是 ’亦可將磁性體片以及第1磁性體凸部藉由磁性材料來形 成，並將其固定在旋轉體之外周面上。例如，如圖7(A )中所示一般，對於C字狀之電磁鋼板iioo進行層積加 工’並製作出使磁性體片1 1 0以及磁性體凸部ilia、 111b成爲了 一體的磁性零件1110。而後，如圖7(B)、 (C )中所示一般，將此磁性零件1 Π 0，在藉由從旋轉軸 21而延伸之支持構件115所支持了的圓筒狀之旋轉體lla 的外周面上，以使磁性體凸部111a、lllb在旋轉體lla 之軸方向上而並排的方式來作固定。於此情況，相較於亦 包含有磁性體凸部111a、lllb地而將旋轉體lla藉由電 磁鋼板之層積體而一體性地形成的情況，在製造上係爲容 易。又’旋轉體1 1 a，不論是使用磁性材料、非磁性材料 均可’例如，係亦可藉由在構造用材料中所被使用的鐵、 -21 - 201208494 鋼、不鏽鋼、鋁合金、鎂合金、GFRP (玻璃纖維強化塑 膠）或者是CFRP (碳纖維強化塑膠）等之複合材料來形 成之。 於此例中，雖係針對藉由電磁鋼板1100之層積體來 構成磁性零件111 〇的情況爲例而作了說明，但是，磁性 零件1 1 1 0，例如亦可藉由在鐵粉等之磁性粉末的表面上 施加絕緣被覆並且將此粉末作了加壓成形之壓粉磁心而構 成之。又，在軛片以及第2磁性體凸部處，亦可適用此種 磁性零件。 在上述之實施形態1的感應加熱裝置101中，係爲對 於身爲將旋轉體11 (磁性體片110)配置在內側並且將軛 12(軛片120)配置在外側的內轉子構造，並在磁性體.片 1 1 0和軛片1 20之雙方處而形成有磁性體凸部（第i磁性 體凸部111a、111b、第2磁性體凸部121a、121b)的情 況爲例’來作了說明。作爲其他實施形態，亦可設爲將旋 轉體Π (磁性體片1 1 0 )配置在外側並且將軛1 2 (軛片 120)配置在內側的外轉子構造，或者是，亦可僅在磁性 體片110和軛片120之其中一方處而形成有磁性體凸部。 (實施形態2-1 ) 圖8中所示之實施形態2 -1的感應加熱裝置1 〇 2 a，係 爲身爲內轉子構造並僅在軛（軛片）處而形成有磁性體凸 部的情況之其中一例。以下，針對其與圖1中所示之實施 形態1的感應加熱裝置1 0 1之間的差異點爲中心來作說明 -22- 201208494 磁性體片110，係爲細板狀之長條的構件，並在使用 圖7(B)所說明了的旋轉體11a之外周面上，沿著旋轉 體11a之軸方向而延伸並且在周方向上空出有等間隔地來 作了複數固定。另外，圖8(A)中之箭頭，係代表旋轉 方向。 軛1 2，係爲在旋轉體1 1 a之外周側處，而與磁性體 片1 1 〇之間空出有特定間隔地來作同心狀配置之筒狀的構 件。又，在軛12之內周面兩端部處，係一體性地被形成 有朝向磁性體片110側突出並且在旋轉體11a之軸方向上 並排的一對之磁性體凸部122a、122b。而後，係將於軸 方向上並排的一對之磁性體凸部122a、122b作爲一組， 並將此在周方向上空出有等間隔地來作了複數組之並排設 置。亦即是，於此情況中，軛12，可以說是將在旋轉體 11a之軸方向上延伸並從兩端部而突出有磁性體凸部122a 、122b的長條狀之軛片120作了複數連結並以使複數之 軛片120呈現圓筒狀的方式來作配置而作了一體化者。另 外，於此，軛12之外徑，係爲與圖1中所示之感應加熱 裝置1 0 1處的軛1 2之外徑相同。又，在磁性體片1 1 〇和 軛片1 20相對向時之磁性體片-磁性體凸部間的間隙長， 係爲與在感應加熱裝置101處之第1磁性體凸部-第2磁 性體凸部間的間隙長相同。 此感應加熱裝置102a，係可藉由與感應加熱裝置101 相同之機制來將熱媒體加熱。亦即是，係藉由對線圈15 -23- 201208494 通電，而產生磁場，並形成通過磁性體片110—其中一方 之磁性體凸部122a—軛片120—另外一方之磁性體凸部 122b的磁性迴路。而後，藉由旋轉體1 la之旋轉，在磁 性迴路中所流動之磁通量係改變，在軛片120中所流動之 磁通量係週期性地改變，因此，在被配置於軛片120之磁 性體凸部122a ' 122b的外周之環狀的加熱部13處，係產 生感應電流。其結果，加熱部1 3係被加熱，配管1 4內之 熱媒體係被加熱。 在上述之例中，雖係以僅在軛1 2 (軛片1 2 0 )處而形 成磁性體凸部122a、122b的情況爲例來作了說明，但是 ，係亦可僅在旋轉體11 (磁性體片110)處形成磁性體凸 部。 (實施形態2-2 ) 圖9中所示之實施形態2-2的感應加熱裝置102b， 係爲身爲內轉子構造並僅在旋轉體（磁性體片）處而形成 有磁性體凸部的情況之其中一例。以下，針對其與圖1中 所示之實施形態1的感應加熱裝置1 0 1之間的差異點爲中 心來作說明。 旋轉體11，係在外周面兩端部處，一體性地被形成 有朝向旋轉體1 1之徑方向外方側突出並且在旋轉體π之 軸方向上並排的一對之磁性體凸部112a、112b。而後， 係將於軸方向上並排的一對之磁性體凸部U2a、112b作 爲一組，並將此在周方向上空出有等間隔地來作了複數組 -24- 201208494 之並排設置（亦參考圖 10)。另外，圖 9(A)中 ，係代表旋轉方向。 軛片120’係爲細板狀之長條的構件，並在旋 之外周側處，而與旋轉體1 1之間空出有特定間隔 同心狀之複數配置。於此例中，如圖1 〇中所示一 軛片1 20之其中一端側係被作連結，軛片〗20係在 上空出有等間隔地而被作複數並排設置。另外，於 磁性體片110和軛片120相對向時之磁性體凸部. 的間隙長，係爲與在感應加熱裝置101處之第1磁 部-第2磁性體凸部間的間隙長相同。 加熱部13，係以環狀來將上述之軛片120的 之外周作包圍地而作配置，且周圍係藉由絕熱材1 作覆蓋。又，在各加熱部13處，係被設置有流通 體之配管14(參考圖9(A))。於此例中，在各 1 3處，係被設置有沿著旋轉體1 1之軸方向而作貫 通孔’並以通過被配置在軛片1 20之中間部的前後 部13之各貫通孔的方式，而被插通有配管14。 此感應加熱裝置1 02b，亦係可藉由與感應加 1 〇 1相同之機制來將熱媒體加熱。亦即是，係藉由 15通電’而產生磁場’並形成通過磁性體片110—> 方之磁性體凸部112a—軛片120—另外一方之磁性 1 1 2b的磁性迴路。而後，藉由旋轉體1 1之旋轉， 迴路中所流動之磁通量係改變，在軛片1 2 0中所流 通量係週期性地改變，因此，在被配置於軛片1 2 0 之箭頭 轉體11 地來作 般，各 周方向 此，在 •軛片間 性體凸 中間部 3i而被 有熱媒 加熱部 通的貫 之加熱 熱裝置 對線圈 其中一 體凸部 在磁性 動之磁 之中間 -25- 201208494 部的外周之環狀的加熱部13處’係產生感應電流。其結 果，加熱部13係被加熱，配管14內之熱媒體係被加熱。 在對上述之感應加熱裝置1 02a和1 02b作了比較的情 況時，相較於在軛片120之磁性體凸部122a、122b處配 置了加熱部的感應加熱裝置l〇2a，係以在軛片120之中 間部處配置了加熱部1 3的感應加熱裝置1 〇2b，能夠將在 軛片1 20處配置了加熱部1 3的狀態下之軸方向的大小縮 小。另一方面，感應加熱裝置l〇2a，係能夠將在軛片120 處配置了加熱部的狀態下之徑方向的大小縮小。 又，係以感應加熱裝置1 〇2b的情況時，被形成在磁 性體片110和軛片120之間的間隙爲更位置在旋轉軸21 之徑方向外方側處。若是間隙位置之外徑越大，’則相對於 固定側之軛片1 20的旋轉側之磁性體片1 1 0的相對性之週 速度會變得越快，因此，係能夠使在軛片1 20處所流動之 磁通量的變化變得急遽。感應加熱能量，由於係與磁通量 之單位時間變化量成正比，因此，藉由將間隙位置之外徑 增大，係能夠將加熱效率提升。 (實施形態3 -1 ) 圖1 1中所示之實施形態3_1的感應加熱裝置103a， 係爲身爲外轉子構造的情況之其中一例。以下，針對其與 圖1中所示之實施形態1的感應加熱裝置1 〇 1之間的差異 點爲中心來作說明。 磁性體片11 〇，係爲細板狀之長條的構件，並被複數 •26- 201208494 配置爲圓筒狀。於此例中，如圖12中所示一般 性體片110，在藉由從旋轉軸21而延伸之支持 所支持了的圓筒狀之旋轉體11a的外周緣部處， 體11a之軸方向上作延伸設置，並使磁性體片1 向上空出有等間隔地作複數並排設置。另外，圖 中之箭頭，係代表旋轉方向》 軛12，係爲在被配置爲圓筒狀之磁性體片 周側處，而與磁性體片1 1 〇之間空出有特定間隔 心狀配置之筒狀的構件。又，在軛1 2之外周面 ，係一體性地被形成有朝向磁性體片1 1 〇側突出 轉體11a之軸方向上並排的一對之磁性體凸吾 122b。而後，係將於軸方向上並排的一對之磁 122a、122 b作爲一組，並將此在周方向上空出 地來作了複數組之並排設置。另外，於此，被配 狀之磁性體片1 1 〇的外徑，係爲與圖1中所示之 裝置101處的軛12之外徑相同，當將感應加熱i 和1 0 1作了比較的情況時，徑方向之大小係爲相 在磁性體片1 1 〇和軛片1 20相對向時之磁性體J 凸部間的間隙長，係爲與在感應加熱裝置1 0 1處 性體凸部-第2磁性體凸部間的間隙長相同。 此感應加熱裝置l〇3a，亦係可藉由與感應 1 〇 1相同之機制來將熱媒體加熱。亦即是，係藉 15通電，而產生磁場，並形成通過軛片120—其 磁性體凸部122a->磁性體片110—另外一方之磁 ，將各磁 構件1 1 5 而於旋轉 1 〇在周方 11(A) 1 1 0的內 地來作同 兩端部處 並且在旋 \ 122a 、 性體凸部 有等間隔 置爲圓筒 感應加熱 装置1 0 3 a 同。又， 午-磁性體 之第1磁 加熱裝置 由對線圈 中一方之 性體凸部 -27- 201208494 122b的磁性迴路。而後，藉由旋轉體11a之旋轉，在磁 性迴路中所流動之磁通量係改變，在軛片120中所流動之 磁通量係週期性地改變，因此，在被配置於軛片120之磁 性體凸部122a、122b的外周之環狀的加熱部13處，係產 生感應電流。其結果，加熱部13係被加熱，配管14內之 熱媒體係被加熱。 當對於上述之感應加熱裝置103a和101作了比較的 情況時，係以感應加熱裝置1 〇3a的情況時，間隙位置之 外徑爲更大，而相對於固定側之軛片1 20的旋轉側之磁性 體片1 1 0的相對性之週速度係變得更快，因此，係能夠提 升加熱效率。 在上述之例中，雖係以在軛片 120之磁性體凸部 122a、122b的外周處配置了加熱部13的情況爲例來作了 說明，但是，係亦可在軛片120之中間部處配置加熱部 13 〇 (實施形態3-2) 圖13中所示之實施形態3-2的感應加熱裝置l〇3b， 係爲在軛片1 20之中間部處而配置了加熱部1 3的情況之 其中一例。例如，係可列舉出：如圖12中所示一般，在 軛1 2處，係在相當於在兩端部處形成有磁性體凸部1 22a 、1 2 2 b的軛片1 2 0之部分以外的部分處，設置細縫1 2 3， 並將半分割了的加熱部，以將軛片1 20之中間部的外周作 環狀包圍的方式來作配置之構成。 -28- 201208494 當將上述之感應加熱裝置103a和103b作了比較的情 況時，係以感應加熱裝置103b的情況，能夠將在軛片 120處配置了加熱部13的狀態下之徑方向的大小更爲縮 /J、〇 在上述之實施形態1、2 · 1、2 - 2、3 -1、3 - 2的感應加 熱裝置101、102a、102b、103a、103b中，係均爲針對使 磁性體片110和軛片120在旋轉體之徑方向上相對向並且 在旋轉體之徑方向上設定了間隙之所謂的徑向間隙型而作 了說明。作爲其他實施形態，係亦可設爲使磁性體片1 1 0 和軛片120在旋轉體之軸方向上相對向並且在旋轉體之軸 方向上設定了間隙之所謂的軸向間隙型。 (實施形態4 ) 圖14中所示之實施形態4的感應加熱裝置104,係 爲軸向間隙型之其中一例。以下，針對其與圖1中所示之 實施形態1的感應加熱裝置1 0 1之間的差異點爲中心來作 說明》 旋轉體lib，係爲於其中一方之端面側處具備有旋轉 軸21的圓板狀之構件，並在另外一方之端面側處被固定 有磁性體片1 1 〇。磁性體片1 1 0，係爲細板狀之長條的構 件’並如圖1 5 ( A)中所所示一般，在旋轉體1 1 b之徑方 向上延伸，並且在周方向上空出有等角度間隔地來作了複 數固定。 軛片1 20，係爲細板狀之長條的構件，並與磁性體片 -29- 201208494 1 1 ο (旋轉體1 1 b )之間空出有特定間隔地’來以在旋轉 體lib之軸方向上而與磁性體片110相對向的方式，而作 了複數配置。又，在各軛片1 20之兩端部處，係一體性地 被形成有朝向磁性體片110側突出的一對之磁性體凸部 122a、122b。於此例中，軛片120，係以與磁性體片110 相對應的方式而在旋轉體lib之徑方向上延伸，並且在周 方向上空出有等角度間隔地而被作複數並排設置（參考圖 15(B))。各軛片1 20，係將與磁性體片1 1 0相對向之 側的相反側，固定在板狀之支持構件1 25處，而被作支持 。另外，於此，在磁性體片110和軛片120相對向時之磁 性體片-磁性體凸部間的間隙長，係爲與在感應加熱裝置 1 〇1處之第1磁性體凸部-第2磁性體凸部間的間隙長相 同。 加熱部1 3，係以環狀來將上述之軛片1 20的磁性體 凸部122a、122b之外周作包圍地而作配置，且周圍係藉 由絕熱材13i而被作覆蓋。又，在各加熱部13處，係被 設置有供熱媒體流通之配管（未圖示）。例如，係可列舉 出：在各加熱部13處，設置沿著旋轉體iib之徑方向而 作貫通的貫通孔，並以通過被配置在軛片120之磁性體凸 部122a、122b處的內外之加熱部13之各貫通孔的方式， 而被插通有配管之構成。 線圈1 5，係以當磁性體片1 1 〇和軛片丨2 〇相互對向 時而通過由磁性體片1 1 0、一對之磁性體凸部以及軛片所 包圍之環狀空間的方式，而被作捲繞。 -30- 201208494 此感應加熱裝置104，亦係可藉由與感應加熱裝置 1 〇 1相同之機制來將熱媒體加熱。亦即是，係藉由對線圈 15通電，而產生磁場，並形成通過磁性體片110—其中一 方之磁性體凸部122a—軛片120—另外一方之磁性體凸部 122b的磁性迴路。而後，藉由旋轉體11a之旋轉，在磁 性迴路中所流動之磁通量係改變，在軛片1 2 0中所流動之 磁通量係週期性地改變，因此，在被配置於軛片1 20之磁 性體凸部122a、122b的外周之環狀的加熱部13處，係產 生感應電流。其結果，加熱部1 3係被加熱，配管內之熱 媒體係被加熱。 在上述之例中，雖係以在軛片120之磁性體凸部 122a、122b的外周處配置了加熱部13的情況爲例來作了 說明，但是，係亦可在軛片1 20之中間部的外周處配置加 熱部13。又，雖係以僅在軛片120處而形成磁性體凸部 122a、122b的情況爲例來作了說明，但是，係亦可在磁 性體片1 1 〇處形成磁性體凸部，亦可在磁性體片1 1 0和軛 片120之雙方處形成磁性體凸部。 (變形例1 ) 在上述之實施形態1' 2-1、2-2、3-1' 3-2、4的感應 加熱裝置 101、 l〇2a、 102b、 103a、 103b、 104 中，亦能 夠以將軛1 2 (軛片1 2 0 )之與旋轉體1 1 (磁性體片i丨〇 ) 相反側之面作覆蓋的方式，來配置絕熱部。例如，若是以 圖1中所示之感應加熱裝置1 0 1爲例來作說明，則如圖 -31 - 201208494 16中所示一般，可列舉出在軛12之外周面處配置絕熱部 1 6之構成》若依據此構成，則藉由以絕熱部1 6來將被配 置有加熱部13之軛片120作覆蓋，係能夠抑制從裝置而 來之放熱，並確保加熱部1 3之保溫性。因此，由於係能 夠將覆蓋加熱部13周圍之絕熱材13i省略或者是設爲更 薄，因此，係能夠將加熱部13之剖面積增大，而能夠謀 求裝置之小型、輕量化。此絕熱部16，係可藉由與上述 之絕熱材13i相同之材料來形成。 又，當將覆蓋加熱部13之周圍的絕熱材13i省略或 者是設爲較薄的情況時，加熱部13之熱係成爲容易被傳 導至軛片120等之構件處。因此，藉由將被設置在加熱部 1 3處之配管1 4的熱媒體供給側以例如能夠從軛片1 20來 受熱的方式而作延伸配設，係能夠將軛片1 20等冷卻’並 且能夠對於所產生的熱作有效利用。又’在線圈1 5處’ 由於係使用有常電導線圈，因此，藉由通電’線圈1 5係 會發熱。因此，藉由將被設置在加熱部13處之配管14的 熱媒體供給側以例如能夠從線圈1 5來受熱的方式而作延 伸配設，係能夠將線圈1 5冷卻’並且能夠對於所產生的 熱作有效利用。 (變形例2) 在上述之實施形態的感應加熱裝置中’係亦可設置對 於線圈15作保護並免於使其受到加熱部13之熱的影響之 耐熱部。例如，若是以圖1中所示之感應加熱裝置1 0 1爲 -32- 201208494 例來作說明’則如圖1 7中所示一般，可列舉出在線圏i 5 之周圍設置耐熱部17之構成。此耐熱部17，係可藉由與 上述之絕熱材13i相同之材料來形成。若依據此構成，則 係能夠對於起因於加熱部1 3被加熱一事所導致的線圈之 溫度上升作防止，而能夠使線圈1 5成爲難以受到從加熱 部13而來之熱影響。 (變形例3 ) 在上述之實施形態的感應加熱裝置中，雖係針對將複 數之磁性體片110或者是軛片120在旋轉體之周方向上而 空出等間隔或者是等角度間隔地作配置的情況而作了說明 ’但是’亦可將磁性體片110或者是軛片120僅在周方向 之一部份處作配置。例如，若是以圖8中所示之感應加熱 裝置1 02a爲例來作說明，則如圖1 8中所示一般，可列舉 出僅在周方向之一部份處而配置軛12(軛片120)之構成 。於此例中，係相對於被固定有磁性體片1 1 〇之旋轉體 11a而在半周方向之一部份處被配置有軛片120，此軛片 1 20，係以相對於通過旋轉體1 1 a之中心的線（於圖1 8中 ，係爲水平線）而成爲線對稱的方式來作了配置。若依據 此構成，則除了能夠對於使用材料、零件數量作削減之外 ，亦能夠將徑方向的大小作一部份之縮小。因此’係能夠 舒緩輸送上之限制。 (變形例4 ) -33- £ 201208494 進而，在上述之實施形態的感應加熱裝置中，雖係針 對在軛片120之中間部或者是磁性體凸部（121a、121b 或者是122a、122b)之外周處，配置環狀之加熱部13, 並在此加熱部1 3處插通配管1 4而作配置的情況爲例，來 作了說明，但是，係亦可藉由導電材料來形成配管，並設 爲將配管兼用爲加熱部之構成。例如，亦可如圖1 9中所 示一般，將由導電材料所成之配管14捲繞在軛片120之 外周而作安裝。於此情況，藉由將配管14之捲繞起始部 與捲繞終結部之端部彼此藉由導體來作電性短路，經由在 軛片120處所流動之磁通量的變化，在配管14處係產生 感應起電力，在配管14中係流動有電流，藉由此，配管 14內之熱媒體係被加熱。 以上所說明了的本發明之實施形態的感應加熱裝置， 由於係在磁場產生手段中使用有線圈，因此，相較於使用 有永久磁石的情況，係能夠安定地產生強力的磁場。又， 在使用有永久磁石之裝置的情況時，由於係無法對於磁場 之強度作調整，因此，係恆常產生磁場，並對於旋轉體而 恆常作用有起因於在加熱部所產生之感應電流所導致的朝 向使旋轉停止之方向的轉矩（致動轉矩）。因此，係難以 藉由弱風而作旋轉始動，而無法以良好效率來產生熱。相 對於此，在使用有線圈之裝置的情況時，由於係能夠藉由 對於通電電流作控制來對於磁場之強度作調整，因此，藉 由將通電電流設爲〇或者是設爲較小，係能夠將旋轉體之 致動轉矩縮小。因此，就算是弱風，亦容易進行旋轉始動 -34- 201208494 ，而能夠以良好效率來產生熱。進而，藉由將加熱部（配 管）設爲並不作旋轉的構造，例如在與配管相通連並從外 部而將熱媒體作供給、排出之供排管和配管之間的連接中 ，係並不需要使用容許配管之轉動的旋轉接頭，而能夠以 簡易之構成來實現堅牢之連接。 〈發電系統〉 接著，使用圖20，對於本發明之發電系統的全體構 成之其中一例作說明。圖20中所示之發電系統P，係具 備有感應加熱裝置1 〇、和風車20、和蓄熱器50、以及發 電部60。在被設置於塔91之上部的短艙92處，係被安 裝有風車20，在短艙92內，係收容有感應加熱裝置10。 又，在被建造於塔91之下部（基台）的建屋93內，係設 置有蓄熱器50以及發電部60。以下，對於發電系統P之 構成作詳細說明。 感應加熱裝置1 〇，係爲本發明之感應加熱裝置，例 如，係可利用上述之實施形態的感應加熱裝置。又，在旋 轉軸2 1之另外一端側，係被直接連結有後述之風車20， 並將風力利用爲使旋轉體作旋轉之動力。另外，於此，係 以熱媒體爲水的情況爲例來作說明。 風車20，係爲以在水平方向上延伸之旋轉軸21爲中 心，而將3枚之扇葉201以輻射狀而安裝在旋轉軸21上 之構造。在輸出爲超過5MW之風力發電系統的情況時， 直徑係爲120m以上，旋轉數係爲10〜20rpm左右。 -35- 201208494 在感應加熱裝置1 〇之配管處，係被連接有將水供給 至感應加熱裝置10處之供水管73、和將藉由感應加熱裝 置10而作了加熱的水送至蓄熱器50處之輸送管51。感 應加熱裝置1 〇，係藉由線圈之直流通電，而在磁性體片 、一對之磁性體凸部以及軛片處流動磁通量，並形成磁性 迴路。而後，藉由旋轉體之旋轉，磁性體片-軛片間之間 隙長係改變，在磁性迴路（軛片）處所流動之磁通量係改 變，藉由此，在被配置於軛片之外周的環狀之加熱部處， 係產生感應電流，加熱部係被作感應加熱，並將配管內的 水加熱。此感應加熱裝置10，由於係在磁場產生手段處 使用有線圈，因此，係能夠產生強的磁場，並能夠將身爲 熱媒體之水加熱至例如100 °C〜600 °c —般的高溫。又， 感應加熱裝置10，由於係將加熱部（配管）設爲並不作 旋轉的構造，因此，係並不需要在配管51和輸送管51以 及供水管73之間的連接中使用旋轉接頭，而能夠使用例 如熔接等來以簡易之構成而實現堅牢之連接。 此發電系統P，係藉由感應加熱裝置10來將水加熱 至適於發電的溫度（例如20(TC〜3 50 °C )，並產生高溫 高壓水。高溫高壓水，係通過將感應加熱裝置1 〇和蓄熱 器50作連接之輸送管51，而被送至蓄熱器50處。蓄熱 器50，係將通過輸送管51所送來之高溫高壓水的熱作儲 蓄，並且，使用熱交換器來將發電中所需要之蒸氣供給至 發電部60處。另外，亦可藉由感應加熱裝置10來使蒸氣 產生。 -36- 201208494 作爲蓄熱器5 0 ’例如’係可利用蒸氣蓄壓器、或者 是使用有熔融鹽或油等之顯熱型蓄熱器、亦或是利用有融 點爲高之熔融鹽的相變化之潛熱型蓄熱器。潛熱型之蓄熱 方式，由於係藉由蓄熱材之相變化溫度來進行蓄熱，因此 ，一般而言，相較於顯熱型之蓄熱方式，其蓄熱溫度域係 爲狹帶域，而蓄熱密度係爲高。 發電部60，係爲將蒸氣渦輪機61和發電機62作了 組合的構造，並經由從蓄熱器50所供給而來之蒸氣來使 蒸氣渦輪機61旋轉，而驅動發電機62並發電。 被送至蓄熱器50處之高溫高壓水或者是蒸氣，係藉 由復水器71而被冷卻並回復成水。之後，係被送至幫浦 72處，並成爲高壓水而通過供水管73來送至感應加熱裝 置10處，藉由此，而進行循環。 若依據此發電系統Ρ，則係將可再生能量（例如，風 力）作爲動力來得到旋轉能量並產生熱，再將該熱蓄熱於 蓄熱器中並發電，藉由此，就算是並不使用高價之蓄電池 ，亦能夠實現對應於需求之安定的發電。又，係並不需要 如同先前技術之風力發電系統一般而設置增速機，而能夠 避免由於齒輪箱所造成的問題。進而，由於係藉由輸送管 而將熱媒體之熱供給至例如設置在塔之下部（基台）處的 發電部，因此’係不需要將發電部收容在短艙中，而能夠 將設置在塔之上部的短艙小型、輕量化。 在上述之發電系統中，雖係將熱媒體爲水的情況爲例 來作了說明’但是，亦可將相較於水而熱傳導率更高之液 -37- 201208494 體金屬作爲熱媒體來使用。作爲此種液體金屬，例如係可 列舉出液體金屬鈉。當將液體金屬作爲熱媒體來使用的情 況時，例如，係可設爲：係在用以從加熱部來接收熱之一 次熱媒體中使用液體金屬，並藉由通過輸送管所輸送而來 之液體金屬的熱來透過熱交換器而將二次熱媒體（水）加 熱，並使蒸氣產生。 又，當將在常壓下具有超過loo °c之沸點的例如油、 液體金屬、熔融鹽等作爲熱媒體來使用的情況時，相較於 水，當一直加熱至特定之溫度時，係易於對由於配管內之 熱媒體的氣化所導致之內壓上升作抑制。 (試算例） 設計出圖1中所示之實施形態1的感應加熱裝置1 0 1 ，並對於在加熱部處採用了鋁導體的情況和採用了銅導體 的情況時之裝置的重量作了試算。 設計條件，係如同下述一般而作了設定。將裝置設爲 能夠得到5MW之加熱能量者，並將裝置（軛〗2 )之直徑 設爲4300mm(4.3m)，將裝置（旋轉體11以及軛12) 之軸方向的長度設爲900mm ( 0.9m )，將第1磁性體凸 部llla(lllb)和第2磁性體凸部121a(121b)相互對 向時之第1磁性體凸部·第2磁性體凸部間的間隙長設爲 了 2.5mm。又’在.線圈 15 處，係流動 l〇〇〇〇AT (ampere turn )之電流’並將在圖1(A)之狀態下而在第1磁性 體凸部1 1 1 a ( 1 1 1 b )和第2磁性體凸部1 2 1 a ( 1 2 1 b )之 -38- 201208494 間所產生的磁場設爲1.7T ( tesla)，而將在圖6之狀態 下所產生的磁場設爲0.06T ( tesla)。 在對於裝置重量作了試算後，其結果，在採用了鋁導 體的情況時，係爲23噸（23000kg)，在採用了銅導體的 情況時，係爲27噸（27000kg )。由此結果，可以得知， 相較於採用銅導體的情況，當在加熱部處採用了鋁導體的 情況時，係能夠實現約1 5 %之輕量化。又，若是考慮到 ，在先前技術之5MW層級的風力發電系統中，當無齒輪 的情況時，發電機之重量係爲超過300噸，則在本發明之 發電系統中，被儲存在短艙中之感應加熱裝置的重量係爲 輕，而能夠容易地配置在短艙內。 另外，本發明，係並不被限定於上述之實施形態，在 不脫離本發明之要旨的範圍內，係可適宜作變更。例如， 係可對於磁性體片、軛片以及磁性體凸部之形狀適宜作變 更，或者是亦可對於在此些之構件中所使用的材料適宜作 變更。 [產業上之利用可能性] 本發明之感應加熱裝置，除了能夠利用在對於可再生 能量作了利用之發電系統中以外，例如亦可利用在熱水供 給系統或者是暖氣系統中。又，本發明之發電系統，係能 夠適用在利用有可再生能量之發電領域中。 【圖式簡單說明】 -39- 201208494 [圖1 ]係爲實施形態1之感應加熱裝置的槪略圖’（ A)係爲從旋轉軸側所觀察之正面圖，（B)係爲沿著旋 轉軸方向而作了切斷之側面半剖面圖。 [圖2]係爲實施形態1的感應加熱裝置之旋轉體以及 軛之槪略圖，（A)係爲旋轉體之正面圖’ （B)係爲沿 著軸方向而作了切斷之旋轉體的側面剖面圖’ （C)係爲 軛的正面圖，（D )係爲沿著軸方向而作了切斷的軛之側 面剖面圖。 [圖3]係爲將圖2中所示之旋轉體和軛作了組合的槪 略圖，（E)係爲正面圖，（F)係爲沿著軸方向而作了切 斷之側面剖面圖。 [圖4 ]係爲實施形態1之感應加熱裝置的槪略圖’而 爲將裝置之一部份作了分解的重要部分擴大立體圖。 [圖5]係爲對於在實施形態1之感應加熱裝置中而使 旋轉體作了旋轉時之於磁性體凸部和磁性體突起部之間所 產生的磁場（磁通量密度）T之時間性變化作模式性展示 的圖。 [圖6]係爲實施形態1之感應加熱裝置的槪略圖，而 爲對於旋轉體在旋轉中之其中一狀態作展示的正面圖。 [圖7] (A)係爲將電磁鋼板作了層積加工的磁性零 件之說明圖。（B)以及（C)係爲將同圖（A)之磁性零 件固定在旋轉體之外周面上的槪略正面圖以及槪略側面剖 面圖。 [圖8]係爲實施形態2-1之感應加熱裝置的槪略圖， -40- 201208494 (A )係爲從旋轉軸側所觀察之正面圖，（B )係爲 '沿著 旋轉軸方向而作了切斷之側面半剖面圖。 [圖9]係爲實施形態2-2之感應加熱裝置的槪’ (A )係爲從旋轉軸側所觀察之正面圖，（B )係爲 '沿著 旋轉軸方向而作了切斷之側面半剖面圖。 [圖10]對於實施形態2-2之感應加熱裝置中的磁性體 片和軛片之構成作展示的槪略分解立體圖。 [圖1 1]係爲實施形態3-1之感應加熱裝置的槪略Η ’ (A )係爲從旋轉軸側所觀察之正面剖面圖，（B )係爲 沿著旋轉體之軸方向而作了切斷之側面半剖面圖。 [圖12]對於實施形態3-1之感應加熱裝置中的磁性體 片和軛片之構成作展示的槪略分解立體圖。 [圖13]係爲實施形態3-2之感應加熱裝置的槪略圖， 並爲沿著旋轉體之軸方向而作了切斷之側面半剖面圖。 [圖14]係爲實施形態4之感應加熱裝置的槪略圖，並 爲沿著旋轉體之軸方向而作了切斷之側面半剖面圖》 [圖15]係爲對於實施形態4的感應加熱裝置中之磁性 體片和軛片的構成作展示之槪略圖，（A)係爲被固定有 磁性體片的旋轉體之半正面圖，（B)係爲對於軛片之配 置狀態作展示之半正面圖。 [圖1 6 ]係爲變形例1之感應加熱裝置的槪略圖，（A )係爲從旋轉軸側所觀察之正面圖，（B)係爲沿著旋轉 體之軸方向而作了切斷之側面半剖面圖。 [圖17]係爲變形例2之感應加熱裝置的槪略圖，並爲 -41 - 201208494 沿著旋轉體之軸方向而作了切斷之側面半剖面圖。 [圖18]係爲變形例3之感應加熱裝置的槪略圖，並爲 從旋轉軸側所觀察了的正面圖》 [圖19]對於在感應加熱裝置中之配管的其中一例作展 不之槪略圖。 [圖20]對於本發明之發電系統的全體構成之其中一例 作展示的槪略圖。 【主要元件符號說明】 10、 101、102a、102b、103a、103b、104:感應加熱裝置 P :發電系統 11、 11a、lib:旋轉體 1 1 〇 :磁性體片 1 1 1 a、1 1 1 b :第1磁性體凸部 1 12a、1 12b :磁性體凸部 1 1 5 :支持構件 12 :軛 120 :軛片 1 2 1 a、1 2 1 b :第2磁性體凸部 122a、122b :磁性體凸部 1 2 3 :細縫 125 :支持構件 1 3 :加熱部 1 3 i :絕熱材 -42- 201208494 14 :配管 1 5 :線圈 1 6 :絕熱部 1 7 :耐熱部 1 1 0 0 :電磁鋼板 1 1 1 〇 :磁性零件 2 1 :旋轉軸 2 0 :風車 201 :扇葉 50 :蓄熱器 51 :輸送管 6 0 :發電部 6 1 :蒸氣渦輪機 62 :發電機 71 :復水器 72 :幫浦 73 :供水管 91 :塔 92 :短艙 93 :建屋 43- E：[Non-Patent Document 2] "SUBARU Wind Power System SUBARU 201208494 WIND TURBINE", (online), Fuji Heavy Industries Co., Ltd., [Searched on March 12, 2012], Internet <URL: http://www.subaru-windturbine.jp/windturbine/> [Non-Patent Document 3] "Wind Lecture" (online), Mitsubishi Heavy Industries Co., Ltd., [Search on March 12, 2002] Internet <URL : http://www. Mhi. Co. Jp/products/expand/wind_kouza. Html> [Non-Patent Document 4] Kimura Shou, "Comparison of characteristics of wind power generation 2 large-capacity wind power generators for large-capacity development", IEEJ Journal, 2000, ν ο 1 · 1 2 9,N 〇· 5, p. 228-290 [Problems to be Solved by the Invention] However, in the induction heating device of the prior art described in Patent Document 1, the magnetic field generating means for generating magnetic flux (magnetic field lines) is permanently used. Magnets, therefore, may present the following general problems. The induction heating energy is proportional to the square of the strength of the magnetic field (Η). However, in the case of permanent magnets, since the magnetic field that can be generated is generally weak, sufficient induction heating energy cannot be obtained. There is a tendency to heat the heat medium (such as a liquid such as water) to a desired temperature. In addition, in order to obtain a strong magnetic field, it is also conceivable to use a neodymium magnet (in particular, refer to paragraph 0037 of Patent Document 1). However, the thermal resistance of the magnet of the magnet of 201208494 is poor, and if the temperature rises, the magnetic property will be Reduced (this is the same for general ferrite magnets). Therefore, in the prior art induction heating device in which the permanent magnet is disposed at a position close to the heating portion, the temperature of the permanent magnet is liable to rise and the magnetic properties are lowered, and as a result, the heat medium cannot be heated to The desired temperature is the same. Further, since the permanent magnet deteriorates the magnetic properties as time passes, it is difficult to withstand the use for a long time. Further, in order to prevent deterioration (deterioration) of magnetic properties due to heat, it is also conceivable to provide a heat insulating material so as to cover the outer circumference of the permanent magnet. However, in this case, since the heat insulating material is usually a non-magnetic material, the magnetic gap between the permanent magnet and the heating portion becomes large, and the magnetic flux passing through the heating portion is reduced, so that induction heating is caused. Reduced efficiency. On the other hand, in a wind power generation system that is generally known in the art, in order to smooth the output, a power storage system is provided. However, in the power storage system, since power is stored in the battery, an inverter is required. Such as the parts, resulting in the complexity of the system, the increase in power loss. Further, in the case of a large-scale wind power generation system, a large-capacity storage battery is required in response to the amount of power generation, and the cost as a whole system increases. Moreover, most of the causes of failure of the wind power generation system are caused by failure of the speed increaser (specifically, the gearbox). In the case of a gearbox failure, the gearbox is usually exchanged. However, when the gearbox is housed in a nacelle that is placed above the tower, when the gearbox is installed or removed, It takes a lot of time and labor. Therefore, recently, -8-201208494 also has a gearless variable speed wind turbine that does not require a speed increaser. However, in the case of gearless, specifically, the number of generators is increased ( Multi-pole generators are used for comparison. However, compared with the case of using a speed increaser, the generator system is large and heavy. In particular, in a large-scale wind power generation system of the 5 MW level, there is a case where the weight of the generator is more than 300 tons (300,000 kg) (refer to Table 2 of Non-Patent Document 4), and it is difficult to arrange it in the nacelle. The present invention has been made in view of the above circumstances, and an object thereof is to provide an induction heating device having a property suitable for heating a heat medium. Still another object is to provide a power generation system including the above-described induction heating device. [Means for Solving the Problem] The induction heating device of the present invention is a device for heating a heat medium, comprising: a rotating body having a rotating shaft, and a magnetic piece, a yoke, and a pair The magnetic body convex portion, the heating portion, the piping, and the coil. The magnetic piece is a long member that is fixed to the rotating body. The yoke piece is a member which is disposed at a distance from the magnetic piece and which is elongated with respect to the magnetic piece. The pair of magnetic convex portions are formed at at least one of the magnetic piece and the yoke, and protrude from the both end portions toward the other one. The heating portion is an annular member formed of at least a part of a conductive material, and is disposed in a ring shape to surround the yoke. The piping is disposed at the heating portion and is distributed by the heat medium. 201208494 The coil is wound by a space surrounded by a magnetic piece, a pair of magnetic body convex portions, and a yoke when the magnetic piece and the yoke piece face each other. According to the induction heating device of the present invention, since the coil is used in the magnetic field generating means, a stronger magnetic field (magnetic flux density) can be stably generated as compared with the prior art using a permanent magnet. Specifically, by increasing the current applied to the coil, a strong magnetic field can be generated, and the intensity of the magnetic field can be adjusted by controlling the energization current. Further, when a coil is used, it is difficult to cause deterioration of magnetic properties due to temperature rise or deterioration of magnetic properties over time compared to permanent magnets. Therefore, by using the coil at the magnetic field generating means, it is easy to control the energization current and maintain a sufficient magnetic field strength, and it is possible to obtain a temperature sufficient to heat the heating portion (heat medium) to a specific temperature (high temperature of 100 ° C or more, For example, sufficient performance (thermal energy) of 100 ° c ~ 600 ° c). Further, a mode in which a DC current flows in a coil and generates a DC magnetic field can be cited. Further, in the induction heating device of the present invention, the piping is provided in a heating portion that is fixed without being rotated, and the supply pipe is connected to the piping and supplies and discharges the heat medium from the outside. In the connection with the piping, it is not necessary to use a rotary joint that allows the rotation of the piping. Therefore, it is possible to achieve a firm connection by a simple configuration. Specifically, if the heat medium is heated, the pressure in the piping rises. For example, when the heat medium is water (vapor), it is about 25 MPa (250 atm) at 600 °C. When the heating unit (pipe) is rotated - -10- 201208494, it is necessary to have a special rotary joint that can withstand this pressure. However, when it is not rotated, the rotary joint is not required, and it is possible to borrow A sufficiently strong structure is achieved by, for example, a simple method of welding the supply pipe and the pipe. Description will be made on the heating of the heat medium in the induction heating device of the present invention. In the device of the present invention, a right-rotating magnetic field in a direction in which a current flows is generated by energizing the coil, and a magnetic flux is generated at the magnetic piece, the yoke, and the pair of magnetic convex portions to form a magnetic force. Loop. Specifically, when the magnetic piece and the yoke piece face each other, a magnetic circuit is formed which is a magnetic piece - a pair of magnetic convex portions - yoke pieces - the other magnetic convex portion - a magnetic piece. Then, by rotating the rotating body, when the magnetic piece and the yoke piece face each other and are close to each other, the magnetic gap in the magnetic circuit becomes small, and the magnetic flux flowing in the magnetic circuit increases. On the other hand, when the magnetic piece and the yoke piece are apart from each other, the magnetic gap in the magnetic circuit becomes large, and therefore the magnetic flux flowing in the magnetic circuit is reduced. Therefore, the magnetic flux flowing in the mirror is changed by rotating the rotating body*, so that the induced heating power (reverse power) is generated at the annular heating portion disposed on the outer circumference of the yoke. An induced current is generated at the heating portion, whereby the heating portion is heated and the heat medium is heated. The magnetic material sheets may be at least one, or may be arranged side by side in a plurality of directions in the circumferential direction of the rotating body. The yoke piece may be at least one, or may be arranged side by side in the circumferential direction at the outer peripheral side of the rotating body. The number of magnetic sheets and yoke sheets may be the same or different. Further, when the magnetic sheet or the yoke sheet is provided in a plurality of sheets arranged side by side, it is preferable to set it to four or more, and to set them at equal intervals in the circumferential direction. The shape of the magnetic convex portion formed at least one of the magnetic sheet and the yoke sheet is not particularly limited. In the present invention, the magnetic material sheet, the yoke sheet, and the magnetic body convex portion are each made of a magnetic material, and as the magnetic material to be used, for example, iron, nickel, cobalt, Neodymium steel, high magnetic alloy and ferrite. Further, examples of the conductive material used in the heating portion include aluminum, copper, iron, and the like. In particular, since aluminum is used in the heating portion, the weight of the heating portion can be reduced, so that the weight of the device can be reduced. Examples of the heat medium include water, oil, liquid metal (Na, Pb, etc.), a liquid such as a molten salt, and gas 〇 as one of the forms of the induction heating device of the present invention, and the coil is superconducting. The composition of the coil. Examples of the coil include a constant conductance coil such as a copper wire or a superconducting coil using a superconducting wire. When a DC current flows in the coil and a DC magnetic field is generated, if the superconducting coil is used, the resistance is 0. Even if a large current flows, the heat is not generated in the wire crucible. Therefore, according to the above configuration, it is possible to suppress the heat generation (loss) of the coil due to the flow of a large current compared to the normal electric coil, and it is possible to maintain a very strong magnetic field without power loss. In one embodiment of the induction heating device of the present invention, a heat insulating portion having a surface on the opposite side to the magnetic sheet side of the yoke sheet may be provided. -12- 201208494 In the present invention, in order to prevent the heat of the heating portion from being dissipated, the periphery of the heating portion may be covered with a heat insulating material. However, in this case, the sectional area of the heating portion is reduced. The amount of area occupied by the insulation material. On the other hand, according to the above configuration, the yoke is covered by the heat insulating portion, so that the heat radiation from the device can be suppressed, and the heat retaining property of the heating portion can be ensured. The heat insulating material around the heating portion is omitted or thinner. Therefore, since the heat insulating material around the heating portion can be omitted or made thinner, the cross-sectional area of the heating portion can be increased, and the size and weight of the device can be reduced. One aspect of the induction heating device of the present invention includes a heat-resistant portion having a heat-resistant portion that protects the coil from the heat of the heating portion. If the heating portion is heated, when the coil is placed at a position close to the heating portion, the temperature of the coil rises due to the heat of the heating portion. Further, it is conceivable that even if the coil is disposed at a position far from the heating portion, the temperature of the coil is increased due to heat transmitted from the heating portion through a member such as a yoke. If the temperature of the coil rises, there is a case where the electrical characteristics of the coil are deteriorated or the like. In particular, as described above, since the heat insulating material covering the periphery of the heating portion may be omitted or thinned, the influence may be further increased. Therefore, according to the above configuration, it is possible to prevent the temperature rise of the coil due to the heating of the heating portion, and it is possible to prevent the coil from being affected by the heat from the heating portion. In one aspect of each of the induction heating devices of the present invention, a configuration in which a rotating shaft is connected to a windmill and wind power is used to rotate the rotating body is exemplified. In the induction heating device of the present invention, in the power of the rotating body (rotating shaft), although the internal combustion engine such as an electric motor or an engine can be used, it is preferable to use a regenerable wind, water, wave force or the like. energy. If the renewable energy is utilized, the increase of C 0 2 can be suppressed, wherein 5 is a power generation system suitable for the present invention by utilizing wind power, and is characterized in that the induction heating device of the present invention described above is provided; Thereby, the heat of the heat medium heated by the induction heating device is converted into a power generating portion of electrical energy. The power generation system of the present invention is a new power generation system which is not used in the prior art in that the heat of the heat medium heated by the above-described induction heating device is utilized for power generation. For example, if the rotating shaft of the induction heating device is connected to the windmill and the wind is used in the power of the rotating body, the energy of the wind can be converted into rotational energy and converted into thermal energy, and taken out as electrical energy. On the other hand, in the power generation system according to the present invention, by configuring the heat to be converted into electrical energy, energy can be stored as heat by using the heat accumulator, thereby achieving efficient and stable power generation. Further, the heat storage system capable of accumulating heat in the heat accumulator and taking out heat required for power generation is simpler than the power storage system, and the heat accumulator is also lower in cost than the battery. Further, it is not necessary to provide a speed increaser as in the prior art wind power generation system, and problems caused by the gear box can be avoided. -14 - 201208494 [Effects of the Invention] Since the induction heating device of the present invention uses a coil in the magnetic field generating means, it is easy to heat the heat medium to a temperature higher than 1 〇〇 ° c. Further, the power generation system of the present invention is a new power generation system which is not used in the prior art, since the heat of the heat medium heated by the above-described induction heating device is utilized for power generation. [Embodiment] An embodiment of the present invention will be described using a drawing. In addition, in the figures, the same symbols represent the same or equivalent parts. <Induction Heating Device> (Embodiment 1) The induction heating device 100 of the first embodiment shown in Fig. 1 includes a rotating body 11, a yoke 12, a heating unit 13, a pipe 14, and a wire cymbal. 1 5. Hereinafter, the composition of the induction heating device 10 1 is made using FIGS. 1 to 7. Detailed description. Further, in Figs. 1 and 6, the heating portion is shown in a cross section. The rotating body 11 is provided with a rotating shaft 21 rotatably supported, and is a cylindrical member supported by a supporting member 115 extending radially from the rotating shaft 21 (refer to Figs. 2 and 3). . Further, at both end portions of the outer peripheral surface of the rotating body 11, a pair of first magnetic body protrusions which are protruded outward in the radial direction of the rotating body 并且 and are arranged side by side in the axial direction of the rotating body 11 are integrally formed. Part 1 1 1 a, 1 1 1 b. In this example, the -15-201208494 is a group of the first magnetic body projections Ilia and 11lb which are arranged side by side in the axial direction, and is multiplexed in the circumferential direction at equal intervals. In this case, it is set side by side. Further, the rotating body 1 1 is also made of a magnetic material including the first magnetic body convex portions 1 1 1 a and 1 1 1 b, and is formed of iron in this example. In other words, in this case, the rotating body 11 can be said to be an elongated magnetic body that extends in the axial direction of the rotating body 11 and protrudes from the both end portions with the first magnetic body convex portions 111a and 111b. The sheet 1 1 is multiplexed and integrated so that the plurality of magnetic sheets 110 are formed in a cylindrical shape. In addition, the rotating body 11 is rotated in the counterclockwise direction when viewed from the side of the rotating shaft 21 (the arrow in Fig. 1(A) represents the rotating direction, Fig. 6 The yoke 12 is a tubular member that is disposed at a peripheral side of the rotating body 11 and is spaced apart from the rotating body 11 at a predetermined interval, and is opposed to the outer peripheral surface of the rotating body. The way to the direction is configured to be concentric (refer to Figures 2 and 3). Further, both end portions of the inner peripheral surface of the yoke 12 are integrally formed to face the rotating body 1 so as to correspond to the first magnetic body convex portions 111a and 111b of the above-described rotating body 1. A pair of second magnetic body convex portions 121a and 121b that protrude sideways and are arranged side by side in the axial direction of the rotary body 11. In this example, a pair of second magnetic body convex portions 121a and 121b which are arranged side by side in the axial direction are grouped, and a plurality of arrays are formed at equal intervals in the circumferential direction. , is set side by side in groups of 18). Further, the yoke 12 is also made of a magnetic material including the second magnetic body convex portions 1 2 1 a and 1 2 1 b, and is formed by iron -16 - 201208494 in this example. In other words, in this case, the yoke 12 can be said to be a long yoke piece 120 that extends in the axial direction of the rotating body 11 and protrudes from the both end portions with the second magnetic body convex portions 121a and 121b. The plurality of connections are made and integrated so that the plurality of yoke pieces 120 are formed in a cylindrical shape. Here, the yoke 12 is fixed so as not to rotate. The first magnetic body convex portions 111a and 111b and the second magnetic body convex portions 121a and 121b are all surfaces that are parallel to the axial direction of the rotating body 11 toward the circumferential direction of the rotating body 11, and are in the protruding direction. In the direction orthogonal to the direction, the cross section is a rectangular column having a slightly rectangular shape. The heating unit 13 is an annular member that surrounds the outer circumferences of the second magnetic body convex portions 121a and 121b of the yoke piece 120 in a ring shape (see Fig. 4). In other words, when the longitudinal direction of the yoke piece 120 (in this case, the pair of second magnetic body convex portions 121a and 121b) is used as the axis, the heating portion 13 is formed in a ring shape. The circumferential direction is arranged as a surrounding. The heating portion 13 is made of a conductive material, and in this case, it is formed of aluminum. Further, in this example, the periphery of the heating portion 13 is covered with the heat insulating material 1 3 i so as not to dissipate heat from the heating portion 13. In the heat insulating material 1 3 i, for example, asbestos, glass asbestos, foamed plastic, red brick, ceramic, or the like can be used. At each heating unit 13, a pipe 1 4 through which a heat medium flows is provided (refer to Fig. 1 (A)). In this example, each of the heating portions 13 is provided with a through hole penetrating in the axial direction of the rotating body 11, and a second magnetic body that is arranged side by side in the axial direction. In the manner in which the body convex portions 121a and 121b are in the through holes of the heating unit 13 before and after, the pipe 14 is inserted through -17 to 201208494. Further, the heating portion 13 and the piping 14 are thermally connected. In addition, for example, in the example, the heat medium is supplied from one end side of the pipe 14 and discharged from the other end side, or the one end side of the pipe 14 is provided. A connecting pipe that connects the pipe 14 and the other pipe 14 is attached, and the heat medium is supplied from the other end side of the pipe 14, and is discharged from the other end side of the other pipe 14 through the connecting pipe. That is, the former case is a unidirectional flow path, and the latter case is a reciprocating flow path, and the heating distance of the heat medium can be further increased as compared with the case of the former. The coil 15 is a magnetic piece 110 having a pair of first magnetic body convex portions 111a and 111b formed at both end portions, and a pair of second magnetic body convex portions 121a and 121b formed at both end portions. When the yoke pieces 120 face each other, the magnetic material piece 11 (rotating body 11), the pair of first magnetic body convex parts 1 1 1 a, 1 1 1 b, and the pair of second magnetic body convex The portions 1 2 1 a and 121b and the yoke 120 (yoke 12) are wound in a space surrounded by the yoke 120 (refer to Fig. 1). In this example, the turns 15 are disposed in the annular space between the rotating body and the yoke 12, and are fixed to the yoke 1 2 side at a distance from the rotating body 1 1 . Further, the coil 15 is a normally-conducting copper coil, and a DC power source (not shown) is connected to the coil 15. Here, the direction of the direct current that is energized at the line 圏15 is set to be the same direction as the direction of rotation of the rotator 11 (the arrow in Fig. 4 represents the direction in which the current flows). Next, a detailed description will be given of the machine for heating the heat medium in the induction heating device 101 -18-201208494. At the induction heating device 101, if the coil 15 is energized, a magnetic field is generated in the right direction of rotation in the direction in which the current flows (in the case of FIG. 1(B), in the direction from the paper surface toward the depth), and A magnetic flux is formed in the magnetic sheet 110' to the first magnetic convex portions 111a and 111b, the pair of second magnetic convex portions 121a and 121b, and the yoke 120 to form a magnetic circuit (Fig. 1 (B) The dotted arrow is a schematic diagram of the flow of magnetic flux). Specifically, when the magnetic sheet 110 (for the first magnetic body convex portion 1 1 1 a, 1 1 1 b ) and the yoke sheet 1 2 0 (for the second magnetic body convex portions 121a and 121b), In the case of the magnetic material sheet 110, one of the first magnetic body convex portions 111a, one of the second magnetic body convex portions 12U and the yoke piece 120, and the other one of the second magnetic body convex portions 12 1b-> The other magnetic circuit of the first magnetic body convex portion illb-magnetic material sheet 110. Then, by rotating the rotating body 11, when the magnetic sheet 1 1 〇 and the yoke 1 120 are opposed to each other and close to each other, the magnetic gap in the magnetic circuit becomes small, and the magnetic flux flowing in the magnetic circuit increases. . On the other hand, when the magnetic sheet 110 and the yoke 1 20 are apart from each other, the magnetic gap in the magnetic circuit becomes large, and therefore the amount of magnetic flux flowing in the magnetic circuit is reduced. Therefore, the magnetic flux flowing in the yoke 120 is periodically changed by the rotation of the rotating body 11, and therefore, the second magnetic convex portion 1 2 1 a, 1 2 disposed on the yoke 1 120 At the outer heating portion 13 of the outer circumference of 1 b, induced electric power (reverse power) is generated. As a result, an induced current is generated in the heating unit 13 and the heating unit 13 is heated. The heat medium in the pipe 1 4 is heated. -19-201208494 FIG. 5 is a first magnetic body convex portion 1 1 1 a, 1 1 1 b and a second magnetic body convex portion 121a when the rotating body 11 is rotated in the induction heating device 101. The time-dependent change of the magnetic field (magnetic flux density) T generated between 121b is schematically shown. In the magnetic field Τ, as shown in Fig. 1 (a), when the magnetic sheet HO and the yoke 120 are opposed to each other and the gap between the first magnetic convex portion and the second magnetic convex portion is minimized, Become great and the biggest. On the other hand, as shown in Fig. 6, in general, when the rotation of the rotating body 11 (in this case, 1), the magnetic sheet 110 and the yoke 120 are shifted from each other, and the first magnetic When the gap length between the body convex portion and the second magnetic body convex portion is maximum, it is extremely small and minimizes. In the above-described induction heating device 101, the case where the coil 15 is a normally conducting coil has been described as an example. However, the coil 15 may be a superconducting coil. By using a superconducting coil, a stronger magnetic field can be generated. Further, the induction heating device 101 includes the magnetic material piece 110 having the pair of the first magnetic body convex portions 111a and 111b and the yoke piece 120 including the pair of the second magnetic body convex portions 121a and 121b. The number of the two can be set separately. Here, by increasing the number of the magnetic sheets 11 to some extent, the period of change of the magnetic flux flowing through the yokes 126 can be shortened. Since the induction heating energy is proportional to the frequency of the magnetic flux, the heating efficiency can be improved by shortening the cycle, and in the above-described induction heating device 101, the second magnetic-20-201208494 body The shape of the convex portions 121a and 121b is exemplified as a quadrangular prism having a substantially rectangular cross section when cut in a direction orthogonal to the protruding direction. However, the shape is not It is limited to this. For example, a skew structure in which the side faces of the second magnetic body convex portions 121a and 121b are inclined with respect to the axial direction of the rotating body 11 can be employed. By using the skew structure, the cogging torque can be reduced, and the rotation of the rotating body can be made smooth. Further, the first magnetic body convex portions 111a and 111b of the rotating body 11 may have a skew structure. In addition, in the above-described induction heating device 100, the case where the rotating body 11 includes the first magnetic body convex portions 111a and 111b and is integrally formed of a magnetic material is taken as an example. However, the magnetic sheet and the first magnetic body convex portion may be formed of a magnetic material and fixed to the outer peripheral surface of the rotating body. For example, as shown in FIG. 7(A), the C-shaped electromagnetic steel sheet iioo is laminated, and the magnetic material 1110 in which the magnetic material piece 110 and the magnetic body protrusions ilia and 111b are integrated is produced. . Then, as shown in Figs. 7(B) and (C), the magnetic member 1 Π 0 is supported by the cylindrical rotating body 11a supported by the supporting member 115 extending from the rotating shaft 21. The outer peripheral surface is fixed such that the magnetic convex portions 111a and 111b are arranged side by side in the axial direction of the rotating body 11a. In this case, the case where the rotating body 11a is integrally formed by the laminated body of the electromagnetic steel sheet is included as compared with the case where the magnetic convex portions 111a and 111b are included, and it is easy to manufacture. Further, the 'rotating body 1 1 a can be made of a magnetic material or a non-magnetic material, for example, iron which is used in the material for construction, -21 - 201208494 steel, stainless steel, aluminum alloy, magnesium It is formed from a composite of alloy, GFRP (glass fiber reinforced plastic) or CFRP (carbon fiber reinforced plastic). In this example, the case where the magnetic component 111 构成 is formed by the laminated body of the electromagnetic steel sheet 1100 is described as an example. However, the magnetic component 1 1 10 may be, for example, made of iron powder or the like. An insulating coating is applied to the surface of the magnetic powder, and the powder is formed into a pressure-molded powder magnetic core. Further, such a magnetic component can also be applied to the yoke piece and the second magnetic body convex portion. In the induction heating device 101 of the above-described first embodiment, the inner rotor structure in which the rotator 11 (magnetic material sheet 110) is disposed inside and the yoke 12 (yoke piece 120) is disposed outside is used. Magnetic body. The case where the magnetic body convex portions (the i-th magnetic body convex portions 111a and 111b and the second magnetic body convex portions 121a and 121b) are formed on both the sheet 1 10 0 and the yoke piece 1 20 is described as an example. In another embodiment, the outer rotor structure in which the rotating body Π (magnetic material sheet 1 10 0 ) is disposed outside and the yoke 1 2 (yoke piece 120) is disposed inside may be used, or may be magnetic only. A magnetic body convex portion is formed at one of the body sheet 110 and the yoke piece 120. (Embodiment 2-1) The induction heating device 1 〇 2 a of the embodiment 2-1 shown in Fig. 8 has a structure in which it is an inner rotor structure and a magnetic convex portion is formed only at a yoke (yoke). One of the cases. Hereinafter, the magnetic material sheet 110, which is a thin plate-shaped long member, is described centering on the difference from the induction heating device 1 0 1 of the first embodiment shown in FIG. Further, the outer peripheral surface of the rotating body 11a described with reference to Fig. 7(B) is extended along the axial direction of the rotating body 11a and fixed at equal intervals in the circumferential direction. In addition, the arrow in Fig. 8(A) represents the direction of rotation. The yoke 1 2 is a cylindrical member which is disposed concentrically with a predetermined space between the outer peripheral side of the rotating body 1 1 a and the magnetic piece 1 1 。. Further, at both end portions of the inner peripheral surface of the yoke 12, a pair of magnetic body convex portions 122a and 122b which protrude toward the magnetic material sheet 110 side and are arranged side by side in the axial direction of the rotary body 11a are integrally formed. Then, a pair of magnetic body convex portions 122a and 122b which are arranged side by side in the axial direction are grouped, and are arranged side by side in the circumferential direction at equal intervals. In other words, in this case, the yoke 12 can be said to be a long yoke piece 120 which extends in the axial direction of the rotating body 11a and protrudes from the both end portions with the magnetic convex portions 122a and 122b. The plurality of connections are integrated and arranged so that the plurality of yoke pieces 120 are cylindrical. Further, here, the outer diameter of the yoke 12 is the same as the outer diameter of the yoke 1 2 at the induction heating device 10 shown in Fig. 1. Further, when the magnetic material piece 1 1 〇 and the yoke piece 126 are opposed to each other, the gap between the magnetic piece and the magnetic body convex portion is long, and the first magnetic body convex portion at the induction heating device 101 is the second The gap between the magnetic convex portions is the same. The induction heating device 102a can heat the heat medium by the same mechanism as the induction heating device 101. That is, a magnetic field is generated by energizing the coils 15 -23 - 201208494, and a magnetic body convex portion 122 is formed by the magnetic body piece 110 - one of the magnetic body convex portions 122a - the yoke piece 120 - the other magnetic body convex portion 122b Magnetic circuit. Then, by the rotation of the rotating body 1 la, the magnetic flux flowing in the magnetic circuit is changed, and the magnetic flux flowing in the yoke 120 is periodically changed, and therefore, the magnetic body convexly disposed on the yoke 120 An induced current is generated at the annular heating portion 13 at the outer periphery of the portion 122a' 122b. As a result, the heating unit 13 is heated, and the heat medium in the pipe 14 is heated. In the above-described example, the case where the magnetic convex portions 122a and 122b are formed only at the yoke 1 2 (yoke 1 2 0 ) is described as an example, but it may be only in the rotating body 11 A magnetic convex portion is formed at the (magnetic material sheet 110). (Embodiment 2-2) The induction heating device 102b of the embodiment 2-2 shown in Fig. 9 is a structure in which an inner rotor structure is formed and a magnetic convex portion is formed only in a rotating body (magnetic material piece). One of the circumstances. Hereinafter, the difference between the point and the induction heating device 1 0 1 of the first embodiment shown in Fig. 1 will be described as a center. The rotator 11 is integrally formed at both end portions of the outer peripheral surface, and is integrally formed with a pair of magnetic convex portions 112a that protrude toward the outer side in the radial direction of the rotating body 11 and are arranged side by side in the axial direction of the rotating body π. , 112b. Then, a pair of magnetic body protrusions U2a, 112b which are arranged side by side in the axial direction are grouped, and this is arranged side by side in the circumferential direction at equal intervals to form a parallel array of -24-201208494 (also Refer to Figure 10). In addition, in Fig. 9(A), the direction of rotation is represented. The yoke piece 120' is a thin plate-like long member and is disposed at a peripheral side of the outer circumference of the rotary body with a plurality of concentrically arranged spaces spaced apart from the rotating body 11. In this example, one end side of a yoke piece 20 is shown as being joined as shown in Fig. 1, and the yoke pieces 20 are arranged at equal intervals in the upper space. In addition, the magnetic body sheet 110 and the yoke 120 are opposite to each other when the magnetic body convex portion. The gap length is the same as the gap length between the first magnetic portion and the second magnetic body convex portion at the induction heating device 101. The heating portion 13 is disposed in a ring shape so as to surround the outer periphery of the yoke piece 120, and the periphery is covered with the heat insulating material 1. Further, at each of the heating portions 13, a pipe 14 of a flow body is provided (refer to Fig. 9(A)). In this example, each of the 13 holes is provided with a through hole " along the axial direction of the rotating body 1 1 and passes through the front and rear portions 13 of the front and rear portions 13 disposed at the intermediate portion of the yoke piece 120. The way to be inserted is to have a pipe 14. The induction heating device 102b can also heat the heat medium by the same mechanism as the induction plus 1 〇 1. That is, a magnetic field is generated by energization of 15 and a magnetic circuit is formed which passes through the magnetic piece 110-> magnetic convex portion 112a-yoke 120-the other magnetic 1 1 2b. Then, by the rotation of the rotating body 11, the amount of magnetic flux flowing in the circuit changes, and the amount of flow in the yoke 120 is periodically changed, and therefore, the arrow is disposed in the yoke 1 2 0 In the circumferential direction of the body 11, in the middle of the yoke, the intermediate portion 3i of the yoke is heated by the heat medium heating portion, and the integral convex portion of the coil is in the middle of the magnetic magnetic field - 25- 201208494 The outer peripheral annular heating portion 13 'generates an induced current. As a result, the heating unit 13 is heated, and the heat medium in the pipe 14 is heated. In the case where the above-described induction heating devices 102a and 102b are compared, compared with the induction heating device 10a2 in which the heating portion is disposed at the magnetic convex portions 122a, 122b of the yoke 120, The induction heating device 1 2b of the heating portion 13 is disposed at the intermediate portion of the yoke piece 120, and the size of the axial direction in the state where the heating portion 13 is disposed at the yoke piece 120 can be reduced. On the other hand, the induction heating device 10a can reduce the size in the radial direction in a state in which the heating portion is disposed at the yoke 120. Further, in the case of the induction heating device 1 〇 2b, the gap formed between the magnetic body sheet 110 and the yoke piece 120 is at a position further on the outer side in the radial direction of the rotary shaft 21. If the outer diameter of the gap position is larger, the circumferential speed of the relative polarity of the magnetic sheet 1 10 with respect to the rotating side of the yoke piece 120 of the fixed side becomes faster, and therefore, the yoke can be made The change in the magnetic flux flowing in the 20 places becomes impatient. Since the induction heating energy is proportional to the amount of change in the magnetic flux per unit time, the heating efficiency can be improved by increasing the outer diameter of the gap position. (Embodiment 3 - 1) The induction heating device 103a of the embodiment 3_1 shown in Fig. 1 is an example of a case where it is an outer rotor structure. Hereinafter, the difference from the induction heating device 1 〇 1 of the first embodiment shown in Fig. 1 will be mainly described. The magnetic sheet 11 is a long strip-shaped member and is arranged in a cylindrical shape by a plurality of 26-201208494. In this example, as shown in Fig. 12, the general body piece 110 has an axial direction of the body 11a at the outer peripheral edge portion of the cylindrical rotating body 11a supported by the support extending from the rotating shaft 21. The upper extension is set, and the magnetic sheets 1 are vacated upwards at equal intervals and arranged side by side. In addition, the arrow in the figure represents the rotation direction yoke 12, and is disposed at a peripheral side of the magnetic material sheet arranged in a cylindrical shape, and is disposed with a predetermined interval between the magnetic material sheets 1 1 〇. a tubular member. Further, on the outer peripheral surface of the yoke 1 2, a pair of magnetic protuberances 122b which are arranged side by side in the axial direction of the projecting body 11a toward the side of the magnetic sheet 1 1 are integrally formed. Then, a pair of magnetic waves 122a, 122b which are arranged side by side in the axial direction are grouped, and this is arranged side by side in the vacant direction in the circumferential direction. Further, here, the outer diameter of the magnetic sheet 1 1 配 which is to be matched is the same as the outer diameter of the yoke 12 at the apparatus 101 shown in Fig. 1, when induction heating i and 1 0 1 are made. In the case of comparison, the diameter direction is the length of the gap between the magnetic body J convex portions when the magnetic sheet 1 1 〇 and the yoke piece 126 are opposed to each other, and is in the case of the induction heating device 10 1 . The gap between the body convex portion and the second magnetic body convex portion is the same. The induction heating device 10a can also heat the heat medium by the same mechanism as the induction 1 〇 1. That is, a magnetic field is generated by energization of 15 and formed by the yoke 120 - its magnetic convex portion 122a -> magnetic sheet 110 - the other magnetic, the magnetic members 1 1 5 are rotated 1 〇In the inner side of Zhou Fang 11 (A) 1 10 0, the same end portions are provided and the cylindrical induction heating device 1 0 3 a is placed at the same time at the rotation of the 122's and the convex portions of the body. Further, the first magnetic heating device of the noon-magnetic body is a magnetic circuit of a convex portion -27-201208494 122b of one of the coils. Then, the magnetic flux flowing in the magnetic circuit is changed by the rotation of the rotating body 11a, and the magnetic flux flowing in the yoke 120 is periodically changed. Therefore, the magnetic convex portion disposed on the yoke 120 is changed. At the outer heating portion 13 of the outer circumference of 122a and 122b, an induced current is generated. As a result, the heating unit 13 is heated, and the heat medium in the pipe 14 is heated. When the above-described induction heating devices 103a and 101 are compared, in the case of the induction heating device 1 〇 3a, the outer diameter of the gap position is larger, and the rotation of the yoke plate 20 with respect to the fixed side is performed. The peripheral speed of the relative nature of the side magnetic sheets 110 becomes faster, and therefore, the heating efficiency can be improved. In the above-described example, the case where the heating portion 13 is disposed on the outer circumference of the magnetic convex portions 122a and 122b of the yoke piece 120 is taken as an example, but it may be in the middle portion of the yoke piece 120. The heating unit 13 is disposed 〇 (Embodiment 3-2) The induction heating device 10b of the embodiment 3-2 shown in Fig. 13 is provided with a heating portion 13 at the intermediate portion of the yoke piece 120. One of the cases. For example, as shown in FIG. 12, in the yoke 12, the yoke 1 2 0 which is formed with the magnetic convex portions 1 22a and 1 2 2 b at both end portions is used. A portion other than the portion is provided with a slit 1 2 3, and the half-divided heating portion is configured to surround the outer periphery of the intermediate portion of the yoke piece 120 in a ring shape. -28-201208494 When the above-described induction heating devices 103a and 103b are compared, the size of the radial direction in the state where the heating portion 13 is disposed at the yoke 120 can be obtained in the case of the induction heating device 103b. Further, the inductive heating devices 101, 102a, 102b, 103a, and 103b of the above-described embodiments 1, 2, 1, 2 - 2, 3 - 1, and 3 - 2 are all for magnetic properties. The so-called radial gap type in which the body sheet 110 and the yoke piece 120 are opposed to each other in the radial direction of the rotating body and has a gap in the radial direction of the rotating body has been described. In another embodiment, a so-called axial gap type in which the magnetic sheet 110 and the yoke 120 are opposed to each other in the axial direction of the rotating body and has a gap in the axial direction of the rotating body may be used. (Embodiment 4) The induction heating device 104 of the fourth embodiment shown in Fig. 14 is an example of an axial gap type. Hereinafter, the rotation body lib is described as a center of the difference from the induction heating device 1 0 1 of the first embodiment shown in FIG. 1 , and the rotation shaft 21 is provided on one of the end faces. The disk-shaped member is fixed with the magnetic piece 1 1 在 at the end face side of the other side. The magnetic sheet 1 10 is a thin plate-shaped elongated member 'and extends in the radial direction of the rotating body 1 1 b as shown in FIG. 15 (A), and is vacated in the circumferential direction. The plurals are fixed at equal angular intervals. The yoke piece 20 is a thin plate-shaped long member, and is spaced apart from the magnetic piece -29-201208494 1 1 ο (rotating body 1 1 b ) with a certain interval to the rotating body lib In the axial direction, the magnetic sheet 110 is opposed to each other, and a plurality of configurations are made. Further, at both end portions of each yoke piece 126, a pair of magnetic body convex portions 122a and 122b projecting toward the magnetic material piece 110 side are integrally formed. In this example, the yoke pieces 120 are extended in the radial direction of the rotating body lib in a manner corresponding to the magnetic material piece 110, and are arranged at equal angular intervals in the circumferential direction and are arranged side by side in plural (refer to Figure 15 (B)). Each of the yoke pieces 120 is fixed to the plate-shaped supporting member 125 at the side opposite to the side opposite to the magnetic piece 1 10, and is supported. In addition, when the magnetic sheet 110 and the yoke 120 are opposed to each other, the gap between the magnetic sheet and the magnetic convex portion is long, and the first magnetic convex portion at the induction heating device 1 〇1 is The gap length between the second magnetic body convex portions is the same. The heating portion 13 is disposed so as to surround the outer circumferences of the magnetic convex portions 122a and 122b of the yoke piece 126 in a ring shape, and the periphery is covered by the heat insulating material 13i. Further, a pipe (not shown) through which the heat supply medium flows is provided in each of the heating units 13. For example, a through hole that penetrates in the radial direction of the rotating body iib is provided in each of the heating portions 13, and is disposed inside and outside the magnetic convex portions 122a and 122b of the yoke 120. The through holes of the heating portion 13 are configured to be inserted with a pipe. The coil 15 is formed by an annular space surrounded by the magnetic piece 1 1 0, a pair of magnetic convex portions, and a yoke when the magnetic piece 1 1 〇 and the yoke 丨 2 〇 are opposed to each other. The way is to be wound up. -30- 201208494 The induction heating device 104 can also heat the heat medium by the same mechanism as the induction heating device 1 〇 1. That is, a magnetic field is generated by energizing the coil 15, and a magnetic circuit is formed which passes through the magnetic piece 110 - one of the magnetic convex portions 122a - the yoke 120 - the other magnetic convex portion 122b. Then, the magnetic flux flowing in the magnetic circuit is changed by the rotation of the rotating body 11a, and the magnetic flux flowing in the yoke 120 is periodically changed, and therefore, the magnetic force disposed in the yoke 1 20 An induced current is generated at the annular heating portion 13 on the outer circumference of the body convex portions 122a and 122b. As a result, the heating unit 13 is heated, and the heat medium in the pipe is heated. In the above-described example, the case where the heating portion 13 is disposed on the outer circumference of the magnetic convex portions 122a and 122b of the yoke piece 120 is taken as an example, but it may be in the middle of the yoke piece 120. The heating portion 13 is disposed at the outer periphery of the portion. Further, although the case where the magnetic convex portions 122a and 122b are formed only at the yoke piece 120 has been described as an example, the magnetic convex portion may be formed at the magnetic material piece 1 1 . A magnetic convex portion is formed at both of the magnetic sheet 110 and the yoke 120. (Modification 1) In the induction heating devices 101, l〇2a, 102b, 103a, 103b, and 104 of the above-described Embodiments 1'2-1, 2-2, 3-1' 3-2, 4 The heat insulating portion is disposed so as to cover the surface of the yoke 1 2 (yoke piece 1 2 0 ) opposite to the rotating body 1 1 (magnetic material sheet i ). For example, as an example of the induction heating device 10 shown in FIG. 1, as shown in FIG. 31-201208494, a heat insulating portion 16 is disposed on the outer circumferential surface of the yoke 12. According to this configuration, the yoke 120 on which the heating unit 13 is disposed is covered by the heat insulating portion 16 to suppress heat generation from the device and to ensure heat retention of the heating portion 13 . Therefore, since the heat insulating material 13i covering the periphery of the heating portion 13 can be omitted or made thinner, the sectional area of the heating portion 13 can be increased, and the size and weight of the device can be reduced. This heat insulating portion 16 can be formed of the same material as the above-described heat insulating material 13i. Further, when the heat insulating material 13i covering the periphery of the heating portion 13 is omitted or thinned, the heat of the heating portion 13 becomes a member that is easily guided to the yoke 120 or the like. Therefore, by arranging the heat medium supply side of the pipe 1 4 provided at the heating unit 13 to be heat-receiving from the yoke piece 20, for example, the yoke piece 1 20 or the like can be cooled. And it can effectively utilize the generated heat. Further, since the coil 15 is used, since the constant conducting coil is used, the coil 15 is heated by the energization. Therefore, by providing the heat medium supply side of the pipe 14 provided at the heating unit 13 so as to be heat-dissipable from the coil 15, for example, the coil 15 can be cooled 'and can be generated The hot work is effectively utilized. (Variation 2) In the induction heating device of the above-described embodiment, it is also possible to provide a heat-resistant portion that protects the coil 15 from the heat of the heating portion 13. For example, if the induction heating device 1 0 1 shown in FIG. 1 is described as an example of -32-201208494, then as shown in FIG. 17, a heat-resistant portion 17 is provided around the line 5i 5 . Composition. The heat-resistant portion 17 can be formed of the same material as the above-described heat insulating material 13i. According to this configuration, the temperature rise of the coil caused by the heating of the heating unit 13 can be prevented, and the coil 15 can be hardly affected by the heat from the heating unit 13. (Variation 3) In the induction heating device of the above-described embodiment, the plurality of magnetic material sheets 110 or the yoke pieces 120 are vacantly spaced at equal intervals or at equal angular intervals in the circumferential direction of the rotating body. The arrangement is described as 'but'. The magnetic sheet 110 or the yoke piece 120 may be disposed only at one of the circumferential directions. For example, if the induction heating device 102a shown in FIG. 8 is taken as an example, as shown in FIG. 18, it is generally exemplified that the yoke 12 (yoke plate) is disposed only at one portion of the circumferential direction. 120) The composition. In this example, the yoke 120 is disposed at a portion of the semicircular direction with respect to the rotating body 11a to which the magnetic sheet 1 1 固定 is fixed, and the yoke 120 is opposed to the passing rotating body. The line at the center of 1 1 a (in the case of Figure 18, which is a horizontal line) is configured in a line symmetrical manner. According to this configuration, in addition to the reduction in the number of materials used and the number of parts, the size in the radial direction can be reduced. Therefore, the system can relieve the restriction on transportation. (Modification 4) -33- £201208494 Further, in the induction heating device of the above-described embodiment, the intermediate portion of the yoke piece 120 or the magnetic convex portion (121a, 121b or 122a, 122b) is used. In the outer circumference, the annular heating portion 13 is disposed, and the heating portion 13 is inserted into the pipe 14 as an example. However, the piping may be formed of a conductive material. It is also assumed that the piping is used as a heating unit. For example, as shown in Fig. 19, a pipe 14 made of a conductive material may be wound around the outer periphery of the yoke piece 120 for mounting. In this case, the winding start portion of the pipe 14 and the end portion of the winding end portion are electrically short-circuited by the conductor, and the pipe 14 is passed through the change in the magnetic flux flowing through the yoke 120. The induced electric power is generated, and a current flows through the pipe 14, whereby the heat medium in the pipe 14 is heated. In the induction heating device according to the embodiment of the present invention described above, since the coil is used in the magnetic field generating means, a strong magnetic field can be stably generated as compared with the case where the permanent magnet is used. Moreover, in the case of using a device having a permanent magnet, since the strength of the magnetic field cannot be adjusted, a magnetic field is constantly generated, and the constant action on the rotating body is caused by the induced current generated in the heating portion. The resulting torque (actuating torque) in the direction in which the rotation is stopped. Therefore, it is difficult to make a rotation start by a weak wind, and it is impossible to generate heat with good efficiency. On the other hand, in the case of using a device having a coil, since the intensity of the magnetic field can be adjusted by controlling the energization current, the current is set to 〇 or is set to be small. The actuating torque of the rotating body can be reduced. Therefore, even if it is a weak wind, it is easy to start the rotation -34- 201208494, and heat can be generated with good efficiency. Further, by the heating unit (pipe) being a structure that does not rotate, for example, in the connection between the supply pipe and the pipe that is connected to the pipe and supplies and discharges the heat medium from the outside, It is necessary to use a rotary joint that allows the rotation of the pipe, and a strong connection can be realized with a simple configuration. <Power Generation System> Next, an example of the overall configuration of the power generation system of the present invention will be described with reference to Fig. 20 . The power generation system P shown in Fig. 20 is provided with an induction heating device 1 and a windmill 20, a heat accumulator 50, and a power generating unit 60. In the nacelle 92 provided at the upper portion of the tower 91, a windmill 20 is mounted, and in the nacelle 92, the induction heating device 10 is housed. Further, in the building 93 built in the lower portion (base) of the tower 91, a heat accumulator 50 and a power generating portion 60 are provided. Hereinafter, the configuration of the power generation system P will be described in detail. The induction heating device 1 is the induction heating device of the present invention. For example, the induction heating device of the above embodiment can be used. Further, on the other end side of the rotary shaft 2 1 , a windmill 20 to be described later is directly coupled, and the wind force is utilized as a power for rotating the rotary body. Here, the case where the heat medium is water is taken as an example. The windmill 20 has a structure in which three blades 201 are radially attached to the rotating shaft 21 with the rotating shaft 21 extending in the horizontal direction as a center. In the case of a wind power generation system exceeding 5 MW, the diameter is 120 m or more, and the number of rotations is about 10 to 20 rpm. -35- 201208494 At the piping of the induction heating device 1 , a water supply pipe 73 that supplies water to the induction heating device 10 and water that is heated by the induction heating device 10 are connected to the heat accumulator 50 ducts 51. In the induction heating device 1, the magnetic flux is applied to the magnetic piece, the pair of magnetic convex portions, and the yoke by the DC current of the coil, and a magnetic circuit is formed. Then, by the rotation of the rotating body, the gap between the magnetic sheet and the yoke is changed long, and the magnetic flux flowing in the magnetic circuit (yoke) is changed, whereby the ring disposed on the outer circumference of the yoke is changed. At the heating portion of the shape, an induced current is generated, and the heating portion is heated by induction, and the water in the pipe is heated. Since the induction heating device 10 uses a coil in the magnetic field generating means, it is possible to generate a strong magnetic field and to heat the water as a heat medium to a high temperature of, for example, 100 ° C to 600 ° C. In addition, since the heating unit (pipe) is a structure that does not rotate, the induction heating device 10 does not need to use a rotary joint between the pipe 51 and the connection between the pipe 51 and the water supply pipe 73. It is possible to achieve a firm connection with a simple configuration using, for example, welding. The power generation system P heats the water to a temperature suitable for power generation by the induction heating device 10 (for example, 20 (TC to 3 50 ° C), and generates high temperature and high pressure water. The high temperature and high pressure water passes through the induction heating device. 1 and the heat accumulator 50 is connected to the transfer pipe 51, and is sent to the heat accumulator 50. The heat accumulator 50 stores the heat of the high-temperature and high-pressure water sent through the transfer pipe 51, and uses the heat exchanger. The steam required for power generation is supplied to the power generation unit 60. Alternatively, the steam may be generated by the induction heating device 10. -36- 201208494 As the heat accumulator 50', for example, a vapor accumulator may be used. Alternatively, a sensible heat accumulator having a molten salt or oil, or a latent heat accumulator having a phase change having a melting point of a high melting point may be used. The latent heat type is stored by a heat storage material. Since the heat storage is performed at the phase change temperature, generally, the heat storage temperature range is a narrow band and the heat storage density is higher than that of the sensible heat storage type. The power generation unit 60 is a steam turbine 61. And generator 62 The structure is such that the steam turbine 61 is rotated by the steam supplied from the heat accumulator 50 to drive the generator 62 to generate electricity. The high temperature and high pressure water or steam sent to the heat accumulator 50 is rehydrated. The device 71 is cooled and returned to water. Thereafter, it is sent to the pump 72 and becomes high-pressure water and sent to the induction heating device 10 through the water supply pipe 73, whereby the cycle is performed. In the power generation system, the regenerative energy (for example, wind power) is used as the power to obtain the rotating energy and generate heat, and then the heat is stored in the heat accumulator to generate electricity, whereby the high-priced battery is not used. It is also possible to achieve power generation corresponding to the stability of demand. Moreover, it is not necessary to provide a speed increaser as in the prior art wind power generation system, and it is possible to avoid problems caused by the gear box. On the other hand, the heat of the heat medium is supplied to, for example, the power generation unit provided at the lower portion (base) of the tower, so that it is not necessary to house the power generation unit in the nacelle, and it is possible to be placed above the tower. The nacelle is small and lightweight. In the above-mentioned power generation system, the case where the heat medium is water is taken as an example. However, a liquid having a higher thermal conductivity than water may be used. 201208494 The bulk metal is used as a heat medium. Examples of such a liquid metal include liquid metal sodium. When the liquid metal is used as a heat medium, for example, it can be set to be used for heating. The liquid medium is used in the primary heat medium for receiving heat, and the secondary heat medium (water) is heated and the vapor is generated by the heat of the liquid metal transported through the transfer pipe through the heat exchanger. When a liquid, a liquid metal, a molten salt, or the like having a boiling point exceeding loo °c under normal pressure is used as a heat medium, compared with water, when heated to a specific temperature, it is easy to The increase in internal pressure caused by the vaporization of the heat medium in the piping is suppressed. (Trial example) The induction heating device 10 of the first embodiment shown in Fig. 1 was designed, and the weight of the device was measured for the case where the aluminum conductor was used at the heating portion and the weight of the device when the copper conductor was used. . The design conditions are set as follows. Set the device to a heating energy of 5 MW and set the diameter of the device (yoke 2) to 4300 mm (4. 3m), the length of the device (rotating body 11 and yoke 12) in the axial direction is set to 900 mm (0. 9m), the gap length between the first magnetic body convex portion and the second magnetic body convex portion when the first magnetic body convex portion 111a (ll1b) and the second magnetic material convex portion 121a (121b) face each other is set to 2 . 5mm. again. At the coil 15, the current of the current 〇〇〇〇AT (ampere turn) is flowing and will be in the state of Fig. 1(A) and in the first magnetic body convex portion 1 1 1 a (1 1 1 b ) and the 2 The magnetic field generated between the magnetic convex portion 1 2 1 a ( 1 2 1 b ) -38- 201208494 is set to 1. 7T (tesla), and the magnetic field generated in the state of Fig. 6 is set to 0. 06T (tesla). After trial calculation for the weight of the device, the result was 23 tons (23,000 kg) in the case of the aluminum conductor and 27 tons (27,000 kg) in the case of the copper conductor. As a result, it can be seen that when an aluminum conductor is used in the heating portion as compared with the case of using a copper conductor, it is possible to achieve a weight reduction of about 15%. Moreover, if it is considered that in the prior art 5 MW-level wind power generation system, when the gearless case, the weight of the generator is more than 300 tons, in the power generation system of the present invention, it is stored in the nacelle. The induction heating device has a light weight and can be easily disposed in the nacelle. The present invention is not limited to the above-described embodiments, and modifications may be made without departing from the spirit and scope of the invention. For example, the shape of the magnetic sheet, the yoke sheet, and the convex portion of the magnetic body may be appropriately changed, or may be appropriately changed for the materials used in the members. [Industrial Applicability] The induction heating device of the present invention can be utilized not only in a power generation system for utilizing renewable energy but also in a hot water supply system or a heating system. Further, the power generation system of the present invention can be applied to the field of power generation using renewable energy. [Brief Description of the Drawings] -39-201208494 [Fig. 1] A schematic diagram of the induction heating device of the first embodiment (A) is a front view as viewed from the side of the rotating shaft, and (B) is a rotation along the line. The side half section of the cut is made in the axial direction. Fig. 2 is a schematic view showing a rotating body and a yoke of the induction heating device according to the first embodiment, and (A) is a front view of the rotating body (B) is a rotating body that is cut along the axial direction. The side cross-sectional view '(C) is a front view of the yoke, and (D) is a side cross-sectional view of the yoke cut along the axial direction. 3 is a schematic view showing a combination of the rotating body and the yoke shown in FIG. 2, (E) is a front view, and (F) is a side cross-sectional view taken along the axial direction. . Fig. 4 is an enlarged perspective view showing an essential part of the apparatus for explaining a schematic view of the induction heating device of the first embodiment. FIG. 5 is a temporal change of a magnetic field (magnetic flux density) T generated between the magnetic convex portion and the magnetic protruding portion when the rotating body is rotated in the induction heating device of the first embodiment. A diagram of a model presentation. Fig. 6 is a schematic view showing the induction heating device of the first embodiment, and showing a front view of one of the states in which the rotating body is rotated. [Fig. 7] (A) is an explanatory view of a magnetic member in which an electromagnetic steel sheet is laminated. (B) and (C) are a schematic front view and a schematic side cross-sectional view in which the magnetic parts of the same figure (A) are fixed to the outer peripheral surface of the rotating body. Fig. 8 is a schematic diagram of the induction heating device of the embodiment 2-1, -40-201208494 (A) is a front view as viewed from the side of the rotating shaft, and (B) is a direction along the direction of the rotating shaft. A side profile view of the cut is made. [Fig. 9] Fig. 9 is a front view of the induction heating device of the embodiment 2-2, viewed from the side of the rotating shaft, and (B) is cut along the direction of the rotating shaft. Side half section view. Fig. 10 is a schematic exploded perspective view showing the configuration of a magnetic piece and a yoke in the induction heating device of the embodiment 2-2. [Fig. 1] is a schematic cross-sectional view of the induction heating device of the embodiment 3-1' (A) is a front cross-sectional view seen from the side of the rotating shaft, and (B) is a direction along the axis of the rotating body. A side profile view of the cut is made. Fig. 12 is a schematic exploded perspective view showing the configuration of a magnetic piece and a yoke in the induction heating device of the embodiment 3-1. Fig. 13 is a schematic cross-sectional view showing the induction heating device of the embodiment 3-2, and showing a side cut along the axial direction of the rotating body. Fig. 14 is a schematic cross-sectional view showing the induction heating device according to the fourth embodiment, and is a side cross-sectional view taken along the axial direction of the rotating body. Fig. 15 is an induction heating method according to the fourth embodiment. The structure of the magnetic sheet and the yoke in the apparatus is shown as a schematic view, (A) is a half front view of the rotating body to which the magnetic sheet is fixed, and (B) is a display state for the yoke. Half front view. [Fig. 16] is a schematic diagram of the induction heating device according to Modification 1, wherein (A) is a front view as viewed from the side of the rotating shaft, and (B) is cut along the axial direction of the rotating body. Side profile view. Fig. 17 is a schematic cross-sectional view showing the induction heating device according to the second modification, and is a side cross-sectional view taken along the axial direction of the rotary body from -41 to 201208494. [Fig. 18] is a schematic view of the induction heating device according to the third modification, and is a front view viewed from the side of the rotating shaft. [Fig. 19] An example of the piping in the induction heating device is not performed. Sketch map. Fig. 20 is a schematic diagram showing an example of the overall configuration of the power generation system of the present invention. [Description of main component symbols] 10, 101, 102a, 102b, 103a, 103b, 104: Induction heating device P: Power generation system 11, 11a, lib: Rotating body 1 1 〇: Magnetic sheet 1 1 1 a, 1 1 1 b: first magnetic body convex portion 1 12a, 1 12b : magnetic body convex portion 1 1 5 : support member 12 : yoke 120 : yoke piece 1 2 1 a, 1 2 1 b : second magnetic body convex portion 122a, 122b : Magnetic convex portion 1 2 3 : slit 125 : support member 1 3 : heating portion 1 3 i : heat insulating material - 42 - 201208494 14 : piping 1 5 : coil 1 6 : heat insulating portion 1 7 : heat-resistant portion 1 1 0 0: Electromagnetic steel sheet 1 1 1 〇: Magnetic part 2 1 : Rotary shaft 2 0 : Windmill 201 : Fan blade 50 : Heat accumulator 51 : Transport pipe 6 0 : Power generation unit 6 1 : Steam turbine 62 : Generator 71 : Rehydration 72: Pump 73: Water Supply Pipe 91: Tower 92: Nacelle 93: Building 43- E: