201236513 六、發明說明： 【發明所屬之技術領域】 本發明係有關於高頻加 制被加熱物之無益加熱的高 &裝置’尤其係有關於作成抑 頻加熱裝置。 【先前技術】 作為以往的高頻加熱裝置’提議「包括：加熱室，係 收容被加熱物；高頻振盈器，係使用以將該加熱室内之被 加熱物加熱的高頻波振靈；導波管，係、用以將從該高頻振 =所振篕之高頻波引導至該加熱室；及天線，係使從該 導波管所傳播之高頻波向該加熱室内擴散；該天線係由放 出該高頻波的平板及天線軸所構成，而該天線軸係一端配 置於該導波管m端連接該平板，並將該導波管的 高頻波傳播至該平板’該平板與該天線軸係以從該天線轴 上部所二分支的導電路徑連接」者（例如參照專利文獻 [專利文獻] [專利文獻1]特開2009 — 170335號公報（第3頁，第3 圖、第4圖） 【發明内容】 【發明所欲解決之課題】 該專利文獻1所記載的高頻加熱裝置係包括：加熱 至，係设置成約長方體；高頻振盪器，係使高頻波振盪； 導波管，係傳播高頻波；及天線’係將導波管内的高頻波 傳播至加熱室内；兼具保護天線與被加熱物之設置板的高 頻波透過板設置於此天線的上面的構成。 201236513 而，該天線係由放出高頻波的平板部分及天線軸所構 成’而該天線軸係一端配置於導波管内，在另一端連接平 板’並將導波管的高頻波傳播至平板，平板與天線軸係以 從天線轴上部所二分支的導電路徑連接。利用這種天線的 構成，因為可在天線平板上的廣泛區域放出強電場，所以 對將被加熱物相對地有效加熱具有一定之效果。 可是，另一方面，因為大電流易從導波管經由天線軸 流至與放出高頻波之平板部分連接的導電路徑部分，而有 在導電路徑部分具有比平板部分更強之微波放射特性的情 況。因而，結果亦擔心位於加熱室中心部之導電路徑正上 的加熱變成過強的弊病，或因導電路徑部分之電阻發熱而 金屬氧化等加速劣化的弊病。 本發明係為了解決如上述所示之課題而開發的，其提 供一種可使從高頻振盪器所振盪之高頻波向加熱室内更均 勻地傳播的高頻加熱裝置。 【解決課題之手段】 本發明的高頻加熱裝置’包括：加熱室，係收容被加 熱物；高頻振盈器，係使用以將被加熱物加熱的高頻波振 盈’導波管，係用以引導從該高頻振里器所振盈之高頻波； 天線軸’係傳播該導波管内的高頻波；平板狀天線，係與 該：線軸連結，同時配置成與該加熱室的底部大致平行， 使间頻波向該加熱室内擴散；及轉動驅動手段，係經由該 天線轴使該天線轉動；該天線係包括：第一天線，係將形 成於與該天線轴連結之導體部的開Π部作為第-放射部； 從該第-天線所二分支的第一導電路徑及第二導電路徑； 及第一天線’係將與該第一導電路徑及第二導電路徑連接 4 201236513 的平板部作為第二放射部。 【發明效果】 放射部的第二:疋供電部的天線軸，經由具有第- 、線連接第一導電路徑及第二導電路徑。 二可抑制往第-導電路徑及第二導電路徑的電；集 中’而可抑制導電路徑的劣化。 电％集 2 ®為從第-放射部向相對窄之範圍放射電場 放！部向相對廣大之範圍放射中等強度的電場，所以 可使從南頻振摄器所接湯 ^ 盪所振盪之兩頻波向加熱室内更均勻地傳 【實施方式】 實施形態 在本實施形態，作為向頻加熱裝置的一例，說明家 等所使用之加熱烹調器。 第1圖係實施形態之加熱烹調器之主部的剖面模式 圖。第2圖係實施形態之加熱烹調器之主部的立體圖。第 3圖係實施形態之加熱烹調器之加熱室底面的主部立體 圖。第3圖所示的天線是本實施形態之加熱烹調器的特徵 性構成® 如第1圖所示’加熱室2設置於加熱烹調器之本體i 的内部，門4及操作面板3設置於本體1的前面。 加熱室2由前面開放之形成大致長方體形的筐體所構 成。具有作為加熱室2所收容之被加熱物7的載置台之功 能的高頻波透過板6可拆裝地設置於加熱室2的底部。高 5 201236513 頻波透過板6由高頻波透過之例如陶究所構成。操作面板 3受理開始加熱指示或加熱時間的設定、目標加熱溫度的 設定等來自使用者的各種輸入操作。門4開閉自如地安本 體1’並設置以玻璃夾住衝孔金屬所構成之門視窗5。·利用 此門視窗5 ’可確認加熱室2内所收容之被加熱物7的烹 調狀態。 ~ 如第2圖所示，使用以將被加熱物7加熱之高頻波振 盈的高頻振盪器1卜將從高頻振盪器u所振盪之高頻波 引導至加熱室2的導波管12設置於本體}内。設置於本體 1之加熱室2的底部之高頻振盪器u是使高頻波振盪的磁 控管。 收谷天線20的天線室1〇形成於加熱室2的底板9與 高頻波透過板6之間。天線20是用以使從高頻振盪器j j 所振盪之微波向加熱室2内擴散。用以使天線2〇轉動的天 線馬達23安裝於天線20。 設置於加熱室2的溫度檢測裝置8例如是根據從被加 熱物7所放射的紅外線測量被加熱物7之溫度的紅外線感 測器。 加熱烹調器包括控制部（未圖示）’該控制部係包括根 據來自操作面板3的輸入控制高頻振盪器11或天線馬達 2 3等之驅動的控制電路。此控制部包括根據溫度檢測裝置 8的檢測溫度控制高頻振盪器π的輸出，又，在既定時序 使天線馬達23轉動/停止之功能。依此方式，利用天線馬 達23使天線20轉動/停止，藉此，改變微波對被加熱物7 的照射狀態’而可均勻且高速地將被加熱物7加熱。 在此’說明從高頻振盪器11經由天線20至向被加熱 6 201236513 物7照射之高頻波的傳播方法。 從是高頻振盪器11的磁控管使例如在家庭用之電子 微波爐為2.45GHz的咼頻波振盪。例如在家庭用之電子微 波爐’使輸出功率約1 000W〜200W的高頻波振盈。 利用高頻振盪器11所振盪之高頻波在以導電體所封 閉、構成的導波管12内，在空間傳播。 軸孔12a、轴孔9a分別在導波管12、加熱室2的底板 9設置於彼此對應的位置，在導波管12内之空間傳播的高 頻波是經由軸孔12a、軸孔9a向加熱室2内傳播的結構。 但，只是設置轴孔12a、軸孔9a，高頻波不會高效率 地流入加熱室2内。因而，將金屬製之導電性的天線軸22 與天線馬達23的軸同軸聯結，並插入軸孔i 2a、軸孔9&， 同時將與天線軸22的一端連接之平板狀的天線2〇配置於 加熱室2的天線室内。在這種構造，在天線2〇的天線軸 22，將在導波管12内所傳播之高頻波變換成表面電流。所 變換之電流在天線20的表面流動，伴隨高頻波所造成之電 流的時間變化，藉該電流激發磁場，再利用所激發之磁場 產生電場。磁場與電場的時間變化隨著高頻波的相位增 減’藉此，放射電磁波。 即，因為電流在天線20的表面流動，所以根據高頻波 的時間變化(相位變化)之表面電流的流動方法，從天線2〇 平板部分向加熱室2内所傳播之高頻波動作或變化。因 此’可說可藉由在更廣泛的區域產生在天線表面流動的電 流及電流的時間變化’而從平板上之寬廣區域產生高頻 波。依此方式，藉由經由天線軸22與天線2()在加熱室2 内傳播高頻波，而使傳送效率提高。 201236513 在此，說明以往的天線。第1 〇圖係以往之天線的上視 圖。在習知例，從是與成為往天線60之電流源的天線軸（未 圖示）之連結部的軸連接部6 6，使電流的路徑二分支。採 用分支的電流分別經忐從軸連接部66朝向紙面橫方向延 伸並一度彎曲後到達天線平板63的導電路徑64、從軸連 接部66朝向紙面橫方向延伸並二度彎曲後到達天線平板 63的導電路徑65，作為個別的電流，在第丨〇圖中以圓盤 狀所不之天線平板63上匯流的形式。習知例以向量將經由 導電路徑64從紙面下側傳來的高頻波電流、及經由導電路 徑65從紙面右側傳來的高頻波電流合成，而在天線平板 63上多樣化的電流流動’係著眼於可使所產生之電磁波的 之布多樣化的效果。 可是，從得到本發明的研究得知，在習知例的天線 因為在至天線平板63的導電路徑64、65電流亦流動， 以產生無法忽略其影響之位準的電磁波。 疋表面積比天線平板6 3更小之細路徑的導電路 65因為其表面積小，所以相對地電流易變大進 為：磁波所放出之每單位面積的能量(電力密度)變大 從疋供電部的天線轴易將軸附近之導電路徑64 的正上部分相對地加熱，而會導至無益的加熱。 構杰^施形態的天線2〇係鑑於如上述所示之習知例 4圖係實施形態之加熱烹調器之天線的上視圖 用以在構造上說明天線2。的圖。 首先，從構造上的觀點說明天線2〇。 並與=二所遠：天線20整體上以平板狀的導體構成 連接。此天線20作成平板面與加熱室1 , 8 201236513 底面大致平行，並收容於天線室10。 峻）天圓線：包括2個槽天'線31、32(將兩者總稱為第-天 線）、圓盤狀的天線平板 天 板❹槽=線32的/42(第一導電路徑）及連接夫線平 亩祕、m 導電路徑43(第二導電路徑）。用以垂 連、，，。天線軸22的轴連接部21設置於天線2〇的中心 二二：20藉由以軸連接部21為中心在保持大致水平之 ^ ，使照射於被加熱物7的高頻波均勻化，藉此， 使加熱均勻化。 線3卜槽天線32分別包括形成於導體部31a、32a 長方形或圓孤形的縫隙孔31b、縫隙孔32b(開口部）。槽 天線3卜32將該縫隙孔31b、32b作為高頻波的放射部。 尤其在縫隙孔31b、32b的長度是使用波長之約1/2的情 況^生共振，而可放射強的高頻波。槽天線31、32分別外 形是大致扇形’導電路徑42、43與相當於扇形之半徑的邊 立c、 2c連接。又，在本實施形態，將是天線2()之中心 的轴連接部21作為中心，對稱地配置2個槽天線31、 32。 天線平板41如後述所示，是可放射高頻波的放射部。 在本實施形態’天線平板41是圓盤形，並配置於被槽天線 31與槽天線32之同一平面上夾住之大致扇形的區域。天 線平板41的直徑比槽天線31之邊31c的長度稍短。天線 平板41利用從第一天線所二分支的導電路徑42及導電路 备43與第一天線連接。在本實施形態，天線平板41利用 導電路徑42與一方的槽天線31連接’並利用導電路徑43 與另一方的導電路徑43連接。 201236513 導電路彳坐42與導電路徑43位於相 中心挪移約Qn。 相對於天線平板41的 連接。又：：，的位置，並在與天線平板41同-平面内 他至轴連接電職43與天線平板41之連接點 …接 =:=:導電路徑42…平板 式構成，所 的距離L1長。因為依此方 路徑42的二在本實施形態’將槽天線31之邊31c與導電 與導電路Λ 為連接點他、並將槽天線32之邊32c k 43的連接點設為連接點43b時， 接…距離比從連接點43b至軸連接連部接2; 天線平板41 g己置於被大致扇形之槽天線31與槽天線 32夾住之扇形的區域，同時連接天線平板41與槽天線3卜 32之導電路徑42、43與槽天線31、32的邊…、他連 接。利用這種配置關係，可不會彎曲，以直線狀形成導電 路徑42、43，而可使導電路徑42、43的路徑長度變短。 其次，說明天線20之功能面。第5圖係實施形態之天 線的上視圖’是用以在功能上說明天線2()的圖1 6圖係 實施n之加熱烹冑n之天線上之高頻波傳播的模式圖， 第7圖係實施形態之加熱烹調器的天線平板上之表面電流 的轉移圖。 如第6圖所示，從槽天線3卜32以將橫切縫隙孔3lb、 32b之面作為平面的直線極化波ι〇〇放出高頻波。將放射 此高頻波的縫隙孔31b、32b稱為第一放射部3〇。而，將 槽天線31、3 2上稱為具有強的電場的強電場區域F (參照 第5圖）。在本實施形態’藉由設置2處可放射強的高頻波 的槽天線31、32，可提高來自天線2〇的放射效率，而使 10 201236513 被加熱物7的加熱效率提高。 其次，說明來自天線平板41 其次， 的電場放射。201236513 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a high-amplifier device for high-frequency additive heating of an object to be heated, in particular, for making a frequency suppression heating device. [Prior Art] As a conventional high-frequency heating device, it is proposed to include a heating chamber for accommodating an object to be heated, and a high-frequency vibrator for oscillating high-frequency waves for heating the object to be heated in the heating chamber; And an antenna for guiding a high-frequency wave that is vibrated from the high-frequency vibration to the heating chamber; and an antenna that diffuses high-frequency waves propagating from the waveguide into the heating chamber; the antenna is a flat plate that emits the high-frequency wave and An antenna shaft is configured, and one end of the antenna shaft is disposed at the m end of the waveguide to connect the flat plate, and the high frequency wave of the waveguide is propagated to the flat plate. The flat plate and the antenna shaft are connected from the upper portion of the antenna shaft. For example, the patent document [Patent Document] [Patent Document 1] JP-A-2009-170335 (page 3, FIG. 3, FIG. 4) [Summary of the Invention] The problem to be solved is as follows: The high-frequency heating device described in Patent Document 1 includes: heating to a rectangular parallelepiped; a high-frequency oscillator for oscillating a high-frequency wave; and a waveguide to propagate a high-frequency wave; And the antenna' transmits a high-frequency wave in the waveguide to the heating chamber, and a high-frequency wave transmitting plate that protects the antenna and the object to be heated is disposed on the upper surface of the antenna. 201236513 The antenna is a flat plate that emits high-frequency waves. The antenna shaft is formed by a portion, and one end of the antenna shaft is disposed in the waveguide, and the flat plate is connected at the other end, and the high-frequency wave of the waveguide is propagated to the flat plate, and the flat plate and the antenna shaft are branched from the upper portion of the antenna shaft. The conductive path is connected. With the configuration of such an antenna, since a strong electric field can be emitted over a wide area on the antenna flat plate, there is a certain effect on relatively effective heating of the object to be heated. However, on the other hand, since a large current is easy to The waveguide tube flows through the antenna shaft to the portion of the conductive path connected to the flat plate portion from which the high-frequency wave is emitted, and has a case where the conductive path portion has stronger microwave radiation characteristics than the flat plate portion. Therefore, the result is also worried that it is located at the center portion of the heating chamber. The heating on the positive side of the conductive path becomes too strong, or the heat of the conductive path portion is heated. The present invention has been developed in order to solve the problems as described above, and provides a high-frequency heating device that allows a high-frequency wave oscillated from a high-frequency oscillator to propagate more uniformly into a heating chamber. Means for Solving the Problem The high-frequency heating device of the present invention includes: a heating chamber for accommodating an object to be heated; and a high-frequency vibrator for using a high-frequency wave oscillating wave guide tube for heating the object to be heated, for guiding the slave The high-frequency wave oscillated by the high-frequency vibrator; the antenna shaft 'transmits the high-frequency wave in the waveguide; the flat-panel antenna is connected to the bobbin and is arranged substantially parallel to the bottom of the heating chamber to make the inter-frequency wave Dissipating in the heating chamber; and rotating the driving means to rotate the antenna via the antenna shaft; the antenna comprising: a first antenna, the opening portion formed on the conductor portion connected to the antenna shaft as the first radiation a first conductive path and a second conductive path from the two branches of the first antenna; and the first antenna' is to be connected to the first conductive path and the second conductive path The flat portion of 201236513 serves as the second radiation portion. [Effect of the Invention] The second antenna of the radiation portion: the antenna shaft of the power supply unit is connected to the first conductive path and the second conductive path via the first and second lines. Second, the electricity to the first conductive path and the second conductive path can be suppressed; and the deterioration of the conductive path can be suppressed. The electricity % set 2 ® emits an electric field from the first radiation portion to a relatively narrow range! Since the medium radiates a medium-intensity electric field to a relatively large range, the two-frequency waves oscillated from the soup connected by the south-frequency vibrator can be more uniformly transmitted to the heating chamber. [Embodiment] Embodiments of the present embodiment are As an example of the frequency heating device, a heating cooker used by a home or the like will be described. Fig. 1 is a schematic cross-sectional view showing the main portion of the heating cooker according to the embodiment. Fig. 2 is a perspective view of the main part of the heating cooker according to the embodiment. Fig. 3 is a perspective view showing the main part of the bottom surface of the heating chamber of the heating cooker according to the embodiment. The antenna shown in Fig. 3 is a characteristic configuration of the heating cooker according to the present embodiment. As shown in Fig. 1, the heating chamber 2 is installed inside the main body i of the heating cooker, and the door 4 and the operation panel 3 are provided on the main body. The front of 1. The heating chamber 2 is constituted by a casing which is open at the front and which has a substantially rectangular parallelepiped shape. The high-frequency wave transmitting plate 6 having the function of the mounting table as the object 7 to be heated accommodated in the heating chamber 2 is detachably provided at the bottom of the heating chamber 2. High 5 201236513 The frequency wave transmission plate 6 is composed of, for example, a ceramics. The operation panel 3 accepts various input operations from the user such as the start of the heating instruction, the setting of the heating time, and the setting of the target heating temperature. The door 4 is openably and closably attached to the body 1' and is provided with a door window 5 formed by sandwiching a punched metal with glass. The use of the door window 5' confirms the cooking state of the object 7 to be accommodated in the heating chamber 2. ~ As shown in Fig. 2, the high-frequency oscillator 1 that vibrates the high-frequency wave that heats the object 7 to be heated is placed on the waveguide 12 that guides the high-frequency wave oscillated from the high-frequency oscillator u to the heating chamber 2 Within the body}. The high frequency oscillator u provided at the bottom of the heating chamber 2 of the body 1 is a magnetron that oscillates a high frequency wave. The antenna chamber 1 of the valley antenna 20 is formed between the bottom plate 9 of the heating chamber 2 and the high-frequency wave transmitting plate 6. The antenna 20 is for diffusing the microwave oscillated from the high frequency oscillator j j into the heating chamber 2. An antenna motor 23 for rotating the antenna 2 is attached to the antenna 20. The temperature detecting device 8 provided in the heating chamber 2 is, for example, an infrared sensor that measures the temperature of the object 7 based on the infrared rays emitted from the object 7 to be heated. The heating cooker includes a control unit (not shown). The control unit includes a control circuit that controls driving of the high frequency oscillator 11 or the antenna motor 23 or the like in accordance with an input from the operation panel 3. This control unit includes a function of controlling the output of the high-frequency oscillator π in accordance with the detected temperature of the temperature detecting device 8, and rotating/stopping the antenna motor 23 at a predetermined timing. In this manner, the antenna 20 is rotated/stopped by the antenna motor 23, whereby the irradiation state of the object to be heated 7 by the microwave is changed, and the object 7 can be heated uniformly and at high speed. Here, a method of propagating a high-frequency wave from the high-frequency oscillator 11 via the antenna 20 to the object 7 to be heated 6 201236513 will be described. The magnetron of the high-frequency oscillator 11 oscillates a chirp wave of 2.45 GHz, for example, in an electronic microwave oven for home use. For example, in an electronic microwave oven for home use, a high-frequency wave having an output of about 1 000 W to 200 W is excited. The high-frequency wave oscillated by the high-frequency oscillator 11 propagates in the space in the waveguide 12 which is closed by the conductor. The shaft hole 12a and the shaft hole 9a are respectively disposed at positions corresponding to the waveguide 9 and the bottom plate 9 of the heating chamber 2, and high-frequency waves propagating in the space inside the waveguide 12 pass through the shaft hole 12a and the shaft hole 9a to the heating chamber. 2 internal propagation structure. However, only the shaft hole 12a and the shaft hole 9a are provided, and high-frequency waves do not efficiently flow into the heating chamber 2. Therefore, the conductive antenna shaft 22 made of metal is coaxially coupled to the shaft of the antenna motor 23, and the shaft hole i 2a and the shaft hole 9& are inserted, and the flat antenna 2 连接 connected to one end of the antenna shaft 22 is disposed. In the antenna room of the heating chamber 2. In this configuration, the high-frequency wave propagating in the waveguide 12 is converted into a surface current at the antenna shaft 22 of the antenna 2A. The converted current flows on the surface of the antenna 20, with the temporal change of the current caused by the high-frequency wave, by which the magnetic field is excited, and the excited magnetic field is used to generate an electric field. The time variation of the magnetic field and the electric field increases and decreases with the phase of the high-frequency wave, thereby radiating electromagnetic waves. That is, since the current flows on the surface of the antenna 20, the high-frequency wave propagating from the flat portion of the antenna 2 to the heating chamber 2 operates or changes depending on the method of flowing the surface current of the time change (phase change) of the high-frequency wave. Therefore, it can be said that high-frequency waves are generated from a wide area on the flat plate by generating a temporal change in current and current flowing on the surface of the antenna in a wider area. In this manner, the transmission efficiency is improved by propagating high-frequency waves in the heating chamber 2 via the antenna shaft 22 and the antenna 2(). 201236513 Here, the conventional antenna will be described. The first diagram is a top view of a conventional antenna. In the conventional example, the path of the current is branched by the shaft connecting portion 66 of the connecting portion of the antenna shaft (not shown) which is the current source of the antenna 60. The currents that are branched are respectively extended from the shaft connecting portion 66 toward the lateral direction of the paper surface and once bent to reach the conductive path 64 of the antenna flat plate 63, extend from the shaft connecting portion 66 toward the lateral direction of the paper surface, and are bent twice to reach the antenna flat plate 63. The conductive path 65, as an individual current, is converged on the antenna plate 63 in the form of a disk in the figure. The conventional example synthesizes a high-frequency wave current transmitted from the lower side of the paper via the conductive path 64 and a high-frequency wave current transmitted from the right side of the paper via the conductive path 65, and the current flowing on the antenna flat plate 63 is focused on The effect of diversifying the cloth of the generated electromagnetic waves. However, it has been found from the research of the present invention that the antenna of the conventional example also flows because of the current flowing through the conductive paths 64, 65 to the antenna plate 63, so that electromagnetic waves of a level at which the influence thereof cannot be ignored are generated. Since the surface of the conductive path 65 having a smaller surface area than the antenna flat plate 63 is small, the relative current is easily increased: the energy per unit area (power density) released by the magnetic wave is increased from the power supply unit. The antenna shaft tends to relatively heat the upper portion of the conductive path 64 near the shaft, which leads to unhelpful heating. The antenna 2 of the configuration is a top view of the antenna of the heating cooker according to the conventional embodiment shown in the above description, and the antenna 2 is structurally explained. Figure. First, the antenna 2〇 is explained from a structural point of view. And it is far from = two: the antenna 20 is integrally connected by a flat conductor. The antenna 20 is formed as a flat surface substantially parallel to the bottom surfaces of the heating chambers 1, 8 201236513, and is housed in the antenna chamber 10. )) Tianyuan line: including 2 slot days 'line 31, 32 (collectively referred to as the first antenna), disc-shaped antenna plate slab groove = line 32 / 42 (first conductive path) and The connection line is flat and the m conductive path 43 (second conductive path). Used to hang, ,,. The shaft connecting portion 21 of the antenna shaft 22 is disposed at the center 22:20 of the antenna 2A, and is kept at a substantially horizontal level around the shaft connecting portion 21, thereby uniformizing the high-frequency wave irradiated to the object 7 to be heated. Homogenize the heating. Each of the line 3 groove antennas 32 includes a slit hole 31b formed in a rectangular or circular shape of the conductor portions 31a and 32a, and a slit hole 32b (opening portion). The slot antennas 3b 32 use the slot holes 31b and 32b as radiating portions of high-frequency waves. In particular, when the length of the slit holes 31b, 32b is about 1/2 of the wavelength used, a strong high-frequency wave can be radiated. The slot antennas 31, 32 are each shaped to be substantially fan-shaped. The conductive paths 42, 43 are connected to the sides c, 2c corresponding to the radius of the sector. Further, in the present embodiment, the two slot antennas 31 and 32 are symmetrically arranged with the shaft connecting portion 21 at the center of the antenna 2 () as the center. The antenna flat plate 41 is a radiation portion that can radiate high-frequency waves as will be described later. In the present embodiment, the antenna flat plate 41 has a disk shape and is disposed in a substantially sector-shaped region sandwiched by the slot antenna 31 and the slot antenna 32. The diameter of the antenna flat plate 41 is slightly shorter than the length of the side 31c of the slot antenna 31. The antenna plate 41 is connected to the first antenna by a conductive path 42 and a conductive circuit 43 from two branches of the first antenna. In the present embodiment, the antenna flat plate 41 is connected to one of the slot antennas 31 by the conductive path 42 and is connected to the other conductive path 43 by the conductive path 43. The 201236513 conductive circuit squat 42 and the conductive path 43 are located at the center of the phase shift about Qn. The connection with respect to the antenna plate 41. The position of the ::, and in the same plane as the antenna plate 41, the connection point between the electric job 43 and the antenna plate 41 is connected to the axis... The connection =:=: the conductive path 42 is formed by a flat plate, and the distance L1 is long. . Since the second path 42 is in the present embodiment, the side 31c of the slot antenna 31 is connected to the conductive and conductive circuit 、, and the connection point of the side 32c k 43 of the slot antenna 32 is set as the connection point 43b. The distance is from the connection point 43b to the shaft connection 2; the antenna plate 41g is placed in a sector-shaped area sandwiched by the substantially sector-shaped slot antenna 31 and the slot antenna 32, and the antenna plate 41 and the slot antenna are connected at the same time. The conductive paths 42, 43 of the 3b 32 are connected to the sides of the slot antennas 31, 32. With this arrangement relationship, the conductive paths 42 and 43 can be formed linearly without bending, and the path lengths of the conductive paths 42 and 43 can be shortened. Next, the functional surface of the antenna 20 will be described. Fig. 5 is a top view of the antenna of the embodiment, which is a schematic diagram for explaining the high-frequency wave propagation on the antenna of the heating cooker n of Fig. 16 which functionally illustrates the antenna 2(), Fig. 7 A transfer diagram of the surface current on the antenna plate of the heating cooker of the embodiment. As shown in Fig. 6, the slot antenna 3b 32 emits a high-frequency wave by linearly polarizing waves that are planes across the slit holes 31b and 32b. The slit holes 31b and 32b that radiate the high-frequency waves are referred to as first radiation portions 3A. On the other hand, the slot antennas 31 and 32 are referred to as strong electric field regions F having a strong electric field (see Fig. 5). In the present embodiment, by providing the slot antennas 31 and 32 which can radiate high-frequency waves at two places, the radiation efficiency from the antenna 2 can be improved, and the heating efficiency of the object to be heated 7 can be improved. Next, the electric field emission from the antenna plate 41 will be described.
向多樣的方向放射高頻波。 、43當作電流源的 匕電流源的配置挪移90。後導入， 表面電流的向量大為變化，而可朝 ’被導入天線平板41上的 尚頻波被設置成分別詉High-frequency waves are radiated in a variety of directions. The configuration of the 匕 current source, which is 43 as the current source, is shifted by 90. After the introduction, the vector of the surface current greatly changes, and the frequency waves that can be introduced into the antenna plate 41 are set to 詉 respectively.
1 01。將 此天線平板41稱為第二放射部4〇。 在此’使用第7圖說明圓極化波產生原理。第7圖表 不在天線平板41上流動的電流，實線表示在天線平板 上流動的電流，虛線表示從各個導電路徑流入、流出的電 流。又，虛線的長度表示電流的大小。 藉高頻波所激發之電流振動成每隔相位9〇。流動的方 向反轉。例如，在相位〇。之從紙面下側所流入之來自導 電路徑43的入射向下大為流動，而隨著相位變成相位 22.5。 、45° ，其電流逐漸變小，然後，電流的流動方向 開始反轉，在相位90。，成為與相位〇。時大小相同，而 方向相反的電流。 從紙面下側與從右側所流動之電流的合成，在天線平 板41上以實線表示，作為合成電流，使在各相位的流動方 向依序逐漸變化。結果’在相位變化18〇。中，在天線平 板41上流動之電流的方向轉動一圈。 即’伴隨電流的動作所產生之在紙面鉛垂方向產生的 11 201236513 電磁波使強電場部分®環狀地伴隨相料漸移動。 如第，6圖所示，利用從天線平板41所放出的圓極化波 1雖然比從槽天線31所放出的能量務弱，但是可放出 具有：等能量的高頻波。此高頻波成為在天·線平板41中尤 '、易“動之端°P相對地較強的傾向。將此天線平板41 =圓盤。P刀的内周端部稱為具有中等電場強度的中電場區 域G (參照第5圖）。 此夕卜，在使流入天線平板41上之電流的相位挪移9〇。 ㈣Γ如:講求藉由以電磁場模擬軟體等分析、確認，改 電路徑43之位置與長度等的手段。 第8圖係說明實施形態之天線轉動時之電場分布的模 ’。參照第5圖、第8圖’說明使天線2〇轉動時之電 分布。 首先’如第5圆所示’以軌跡c表示在使天線2〇轉動 又：：之槽天線3卜32之強電場區域F之中心部的軌跡。 =別W執跡D、軌跡E表示在使天線20轉動的情況之 跡：平板41之中電場區域G之外端部與内端部附近的執 加強:圖所示，藉由天線2°轉動，因為強電場區域F 軌跡C之區域的電場，所以成為槽天線3卜32之正上 :二m同：圓狀地變強的傾向。因此，極接近被放置 、槽天線3卜32之正上的天線2〇的被加熱物7亦 力=:力:熱。又’藉由天線20轉動，因為中電場區域G 二軌跡D與軌跡E之間之區域的電場，所以成為天線平 之正上部分的電場亦同心圓狀地變強的傾向。 依此方式’藉由天線20轉動，利用強電場區域f形成 201236513 十乍之範圍的ί衣狀電場區域FI，並利用中電場區域G形 成相對：之範圍的環狀電場區域G1。因為強電場區域ρ與 電場區域G之範圍與位置彼此相異，所以雖然強電場區 域F所造成之環狀電場區域^與中電場區域g所造成之環 狀電場區域G1重複，但是電場區域η與電場區域Gl未一 致因為對天線20之正上的轉動區域，與軌跡C -併從軌 跡D、軌跡E放出電場，所以從天線2〇之轉動區域的廣範 圍放出電％。因為從廣範圍放出電場，所以可對被加熱物 7以高效率賦與均勻的溫度上昇效果。例如，在僅設置槽 天線31 32的情況’因為在與轨跡c偏移的位置無加熱元 斤乂相對地加熱變弱。可是，如本實施形態般藉由設 置天線平板4卜作為第：放射部，與僅設置槽天線3ι、 所構成之情況相比，可實現均勻化的加熱。 X上所示，若依據本實施形態，包括：槽天線Μ、 Μ係將形成於與天線軸22連結之導體部仏' 32a的縫 隙孔31b、32b作為第一放射部30 ;從槽天線3卜32所二 刀支的導電路€ 42、43 ;及第二天線’係將與導電路徑42 ' 43連接的天線平板41作為第二放射部。 在本實施开八態’因為以從是供電部的天線轴以經由第 一天線（槽天線31、v壶道# 以）連接導電路徑42及導電路徑43的 方式構成，所以導雷故」0 守1：路佐42 ' 43可構成為比習知例所示之 天線的導電路徑 4 65短’來自該部分的電場放射幾乎 無’可亦抑制局部性加赦鏺 .、，、變強的弊病。因此，可抑制往導 電路徑42及導電路徑a 3之電％集中’而可抑制導電路徑 42、43 的劣化。 e 又，從與天線輪22連接 之槽天線31、32向縫隙孔31 b、 13 201236513 32b上部之相對窄範圍放射強的磁場另一方面，從天線 平板W向相對廣範圍放射中等強度的磁場。依此方式藉 由設置電場強度相異的放射部’可使天線Μ上之電場放射 的強度多樣化。例如，拉ώ^ 錯由使第一放射部30與第二放射部 40之電場放射的範圍相異，而具有改變天線π上之電場 放射的強度的效果。, tV-t# , 亦可藉由調整第一放射部30與第 二放射部40之範圍與配置，使天線2〇上之電場放射的強 度更均勻化。 又因為a又置2個槽天線31、32，所以轉動時的重心 穩又’天線2G之平面部分在轉動時振動小，而動作穩定。 又’槽天線3卜32設置於相對於是天線2〇之中心的軸連 接部21對稱的位置。藉由依此方式，可使槽天線31與槽 天線32的距離遠離。因此，可抑制從槽天線31、32各自 所放射之冋頻波的相互作用，而可從各個槽天線”、Μ高 效率地放射高頻波。依此方式，利用2個槽天線31、32可 貫現重心穩定且高效率地放出高頻波。 又，在本實施形態，使在天線20轉動的情況之第一放 射部30的軌跡與第二放射部4〇的軌跡相異。即，如第8 圖所不，作成雖然第一玫射部3〇之強電場區域F所造成的 環狀電場區域F1與第二放射部4〇之中電場區域G所造成 的環狀電場區域61重複，但是兩電場區域未—致。因而， 因為可在天線20上之廣範圍放射電場，所以可抑制無益的 加熱》 又’在本實施形態，在第 週期性變化的圓極化波。因而 波的方向多樣化，而具有提高 二放射部40’作成放射電場 ’可使射入被加熱物7之微 無益加熱抑制效果的效果。 14 201236513 此外’在該實施形態、，雖'然說明縫隙孔31a與縫隙孔 32a位於@ |役上之情況的例子，但是亦可配置於彼此 在半‘方向挪移的位置。在此情況，因為需要使縫隙孔以& 與縫隙孔3 2 a的县声相pi，姑曰/ θ 町贲度相同，雖然扇形的角度彼此相異，但 是具有更加抑制無益加熱之效果。 又此時為了取得重量的平衡，亦可使扇形的角度比 較大之縫隙孔之半經方^ϊ &基#。 心千住万向的長度比另一方之縫隙孔之半徑 方向的長度更短。 又，在該實施形態，雖然表示設置2個槽天線31、32 二例二，但是亦可採用設置1個槽天線(第一天線)的構 第9圖係說明實施形態之其他的天線的上視圖。對昭 ^圖所示的天線20與第4圖所示者時，第9圖所示的； :〇在未具有縫隙請上相異。例如，在設置2個= 線時加熱太強的情況，如第9圖所示，設置 使僅從縫隙孔伽放射高頻波，藉此，有可使加敎二 化的情況。又’亦可設置3個以 一相1描工站/松 9 ^ 又’亦可對 第-天線）設置複數個開口部，而構成複 放射。卩。又，亦可設置複數個第二放射部。 於加^馆亦可將是未圖示之加熱裝置的輕射加熱器設置 、‘、、、至頂Φ ’或將熱風加熱器設置於背面，再〜 產生裝置後，與是本發明的高頻加熱組合。又二：乳 設置於加熱室内的溫度檢測裝置等 °使用 工狀態，進行包含停止電力的加熱控制。^加熱物的加 圖式簡單說明】 第1圖係實施形癌之加執亨網 "、…7、凋β之主部的剖面模式 15 201236513 圖。 第2圖係實施形態之加熱烹調器之主部的立體圖。 第3圖係實施形態之加熱烹調器之加熱室底面的主 立體圖。 第4圖係實施形態之加熱烹調器之天線的上視圖。 第5圖係實施形態之加熱烹調器之天線的上視圆。 第6圖係實施形態之加熱烹調器之天線上之高頻 播的模式圖。 第7圖係實施形態之加熱烹調器的天線平板上之表面 電流的轉移圖。 第8圖係說明實施形態之天線轉動時之電場分布的模 式圖。 第9圖係說明實施形態之其他的天線的上視圖。 第10圖係以往之其他的加熱烹調器之天線的上視圖。 主要元件符號說明】 1 本體、 2 加熱室、 3 操作面板、 4 門、 5 門視窗、 6 高頻波透過板、 7 被加熱物、 8 溫度檢測裝置、 9 底板、 9a 軸孔、 16 201236513 10 天線室、 11 高頻振盪器、 12 導波管、 12a 軸孔、 20 天線、 21 軸連接部、 22 天線軸、 23 天線馬達、 30 第一放射部、 31 槽天線、 31a 導體部、 31b 縫隙孔、 31c 邊、 40 第二放射部、 41 天線平板、 42 導電路徑、 42a 連接點、 42b 連接點、 43 導電路徑、 43a 連接點、 43b 連接點、 100 直線極化波、 101 圓極化波。1 01. This antenna flat plate 41 is referred to as a second radiation portion 4A. Here, the principle of circularly polarized wave generation will be described using Fig. 7. The seventh graph is a current that does not flow on the antenna flat plate 41, the solid line indicates the current flowing on the antenna flat plate, and the broken line indicates the current flowing in and out from each of the conductive paths. Also, the length of the broken line indicates the magnitude of the current. The current excited by the high-frequency wave vibrates to 9 每隔 every other phase. The direction of the flow is reversed. For example, in phase 〇. The incident from the lower side of the paper from the conduction path 43 flows downward, and the phase becomes phase 22.5. At 45°, the current gradually becomes smaller, and then the flow direction of the current begins to reverse, at phase 90. , become a phase with the 〇. Currents of the same size and opposite directions. The combination of the current flowing from the lower side of the paper surface and the current flowing from the right side is indicated by a solid line on the antenna flat plate 41, and the flow direction of each phase is gradually changed as a combined current. The result 'has a phase change of 18 〇. In the middle, the direction of the current flowing on the antenna flat plate 41 is rotated one turn. That is, the "201236513 electromagnetic wave generated in the vertical direction of the paper caused by the action of the current causes the strong electric field portion to gradually move along with the phase material. As shown in Fig. 6, the circularly polarized wave 1 emitted from the antenna flat plate 41 is weaker than the energy emitted from the slot antenna 31, but can emit high-frequency waves having equal energy. This high-frequency wave tends to be relatively strong in the antenna plate 41. The antenna P is relatively strong. The antenna plate 41 is a disk. The inner peripheral end of the P blade is called a medium electric field strength. In the middle electric field region G (refer to Fig. 5), the phase of the current flowing into the antenna flat plate 41 is shifted by 9 〇. (4) For example, analysis and confirmation by the electromagnetic field simulation software are performed, and the electric power path 43 is changed. Fig. 8 is a diagram showing the electric field distribution of the antenna when the antenna is rotated in the embodiment. The electric distribution when the antenna 2 is rotated will be described with reference to Fig. 5 and Fig. 8 first. The circle shows the trajectory of the center portion of the strong electric field region F of the slot antenna 3b 32 which is rotated by the trajectory c. The trajectory E indicates that the antenna 20 is rotated. Trace of the situation: the enhancement of the vicinity of the outer end portion and the inner end portion of the electric field region G in the flat plate 41: as shown in the figure, the antenna is rotated by 2°, because the electric field in the region of the strong electric field region F is C, so it becomes a groove. Antenna 3 Bu 32: The same as the two: the tendency to become stronger in a circular shape. Therefore, the pole The object 7 of the antenna 2 that is placed near the slot antenna 3 is also force =: force: heat. 'Turning by the antenna 20 because the medium electric field region G is between the two tracks D and the track E In the electric field of the region, the electric field which becomes the upper portion of the flat plane tends to become concentrically stronger. In this way, by the rotation of the antenna 20, the strong electric field region f is used to form the shape of the 201236513 tenth. The electric field region FI forms a ring-shaped electric field region G1 in a range of relative to the medium electric field region G. Since the range and position of the strong electric field region ρ and the electric field region G are different from each other, the ring shape is caused by the strong electric field region F. The electric field region ^ is repeated with the annular electric field region G1 caused by the medium electric field region g, but the electric field region η does not coincide with the electric field region G1 because the rotating region directly on the antenna 20, and the trajectory C - and from the trajectory D, the trajectory E Since the electric field is released, the electric power is discharged from a wide range of the rotating region of the antenna 2. Since the electric field is emitted from a wide range, it is possible to impart a uniform temperature increase effect to the object 7 with high efficiency. For example, only the groove is provided. In the case of the line 31 32, the heating is weakened by the fact that the heating element is not heated at the position offset from the trajectory c. However, as in the present embodiment, the antenna plate 4 is provided as the first radiation portion, and only the radiation portion is provided. According to the embodiment, the slot antenna 3 is configured to be heated in a uniform manner. As shown in the above, according to the present embodiment, the slot antenna Μ and the Μ system are formed in the conductor portion 连结 connected to the antenna shaft 22 The slit holes 31b, 32b of 32a serve as the first radiating portion 30; the guiding circuits €42, 43 from the slot antenna 3b; and the second antenna' are antenna plates that are connected to the conductive path 42'43; 41 is the second radiation portion. In the present embodiment, the state in which the conductive path 42 and the conductive path 43 are connected via the first antenna (the slot antenna 31, the v-channel #) is used as the antenna axis of the power supply unit. Therefore, the guide rail "0 Guard 1: Luzo 42 '43 can be configured to be shorter than the conductive path 4 65 of the antenna shown in the conventional example. "The electric field radiation from the portion is almost absent" and the localized twist can be suppressed.鏺.,,, and the strong ills. Therefore, the concentration of electricity to the conductive path 42 and the conductive path a 3 can be suppressed, and deterioration of the conductive paths 42 and 43 can be suppressed. e, radiating a strong magnetic field from a slot antenna 31, 32 connected to the antenna wheel 22 to a relatively narrow range of the upper portion of the slot hole 31 b, 13 201236513 32b, and transmitting a medium-strength magnetic field from the antenna plate W to a relatively wide range. . In this way, the intensity of the electric field radiation on the antenna cymbal can be diversified by providing a radiation portion having a different electric field strength. For example, the pull-out error has an effect of changing the intensity of the electric field radiation on the antenna π by making the range of the electric field radiated by the first radiating portion 30 and the second radiating portion 40 different. , tV-t#, by adjusting the range and arrangement of the first radiation portion 30 and the second radiation portion 40, the intensity of the electric field radiation on the antenna 2 can be made more uniform. Further, since a is provided with two slot antennas 31 and 32, the center of gravity during rotation is stable. The plane portion of the antenna 2G has small vibration during rotation and the operation is stable. Further, the slot antenna 3 is disposed at a position symmetrical with respect to the shaft connecting portion 21 which is the center of the antenna 2A. In this way, the distance between the slot antenna 31 and the slot antenna 32 can be made distant. Therefore, it is possible to suppress the interaction of the 冋-frequency waves radiated from each of the slot antennas 31 and 32, and to efficiently radiate high-frequency waves from the respective slot antennas Μ and Μ. In this way, the two slot antennas 31 and 32 can be used. Further, in the present embodiment, the trajectory of the first radiation portion 30 in the case where the antenna 20 is rotated is different from the trajectory of the second radiation portion 4A, that is, as shown in the eighth embodiment. However, the annular electric field region F1 caused by the strong electric field region F of the first illuminating portion 3 与 and the annular electric field region 61 caused by the electric field region G of the second radiating portion 4 重复 are repeated, but the two electric fields are repeated. Therefore, since the electric field can be radiated over a wide range on the antenna 20, it is possible to suppress the unhelpful heating. In the present embodiment, the circularly polarized wave which changes periodically in the first embodiment is thus diversified in the direction of the wave. Further, the effect of improving the micro-non-product heating suppression effect of the incident material 7 by increasing the radiation electric field of the second radiation portion 40' can be achieved. 14 201236513 In addition, in this embodiment, the slit hole 31a and the slit hole will be described. 32a An example of the case of @|, but it can also be placed in a position shifted from each other in the half' direction. In this case, because the slit hole is required to be & and the slit hole 3 2 a of the county sound phase pi, aunt / θ 贲 is the same degree, although the angles of the fan shape are different from each other, but it has the effect of suppressing the unhelpful heating. At this time, in order to achieve the balance of the weight, the half-hole of the slit hole with a larger fan angle can also be obtained. &Base#. The length of the center of the heart is shorter than the length of the other slot hole in the radial direction. In this embodiment, although two slots antennas 31 and 32 are provided, two examples can be used. The ninth diagram of the configuration in which one slot antenna (first antenna) is provided is a top view of another antenna according to the embodiment. When the antenna 20 and the fourth figure shown in Fig. 4 are shown, Fig. 9 〇 〇 〇 〇 〇 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 It can be used to double the situation. Also, 'three sets can be set up with one phase 1 / loose 9 ^ and 'you can also set a plurality of openings for the first antenna to form a complex radiation. 又. Also, a plurality of second radiation portions may be provided. The light-emitting heater of the heating device is set, ',, to the top Φ' or the hot air heater is placed on the back side, and then the generating device is combined with the high-frequency heating of the present invention. Secondly, the milk is placed in the heating chamber. The temperature detection device is used to perform the heating control including the stop power. The simple diagram of the heating pattern is shown in the figure 1. The first figure is the implementation of the cancer-like addiction network, ", ... 7, the main Sectional pattern of the section 15 201236513 Fig. 2 is a perspective view of the main part of the heating cooker according to the embodiment. Fig. 3 is a perspective view showing the bottom surface of a heating chamber of the heating cooker according to the embodiment. Fig. 4 is a top view of the antenna of the heating cooker of the embodiment. Fig. 5 is a top view circle of the antenna of the heating cooker of the embodiment. Fig. 6 is a schematic view showing a high frequency broadcast on the antenna of the heating cooker of the embodiment. Fig. 7 is a transfer diagram of the surface current on the antenna flat plate of the heating cooker of the embodiment. Fig. 8 is a view showing a pattern of electric field distribution when the antenna is rotated in the embodiment. Fig. 9 is a top view showing another antenna of the embodiment. Fig. 10 is a top view of an antenna of another conventional heating cooker. Main component symbol description] 1 body, 2 heating chamber, 3 operation panel, 4 doors, 5 door window, 6 high frequency wave transmitting plate, 7 heated objects, 8 temperature detecting device, 9 bottom plate, 9a shaft hole, 16 201236513 10 antenna room , 11 high frequency oscillator, 12 waveguide, 12a shaft hole, 20 antenna, 21 axis connection, 22 antenna shaft, 23 antenna motor, 30 first radiation part, 31 slot antenna, 31a conductor part, 31b slot hole, 31c side, 40 second radiation, 41 antenna plate, 42 conductive path, 42a connection point, 42b connection point, 43 conductive path, 43a connection point, 43b connection point, 100 linearly polarized wave, 101 circularly polarized wave.