JP5057871B2 - Cooker - Google Patents

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Publication number
JP5057871B2
JP5057871B2 JP2007185908A JP2007185908A JP5057871B2 JP 5057871 B2 JP5057871 B2 JP 5057871B2 JP 2007185908 A JP2007185908 A JP 2007185908A JP 2007185908 A JP2007185908 A JP 2007185908A JP 5057871 B2 JP5057871 B2 JP 5057871B2
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plate
heating
opening
heating chamber
convex portion
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JP2009024894A (en
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毅 齊藤
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0015—Heat and mass exchangers, e.g. with permeable walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0087—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall with flexible plates

Description

本発明は加熱調理器に関し、特に加熱室内に収納された被加熱物の加熱ムラの改善に関するものである。   The present invention relates to a cooking device, and more particularly to improvement of heating unevenness of an object to be heated housed in a heating chamber.

従来のいわゆるターンテーブルレス式オーブンレンジの加熱室は、上板、底板、側板、及び後板から構成されている。底板には、中央部付近に凹状に形成されたアンテナ設置室が設けられており、このアンテナ設置室に下ヒータや回転アンテナが配置され、その上部を被加熱物が載置される非誘電体からなる載置板が配置されている構成となっている。加熱室後壁面を構成する後板は、一般的に略平面形状、もしくは、加熱室後方に突出した形状となっている。   A heating chamber of a conventional so-called turntableless type microwave oven includes an upper plate, a bottom plate, a side plate, and a rear plate. The bottom plate is provided with an antenna installation chamber formed in a concave shape in the vicinity of the central portion. A non-dielectric material on which a lower heater and a rotating antenna are disposed in the antenna installation chamber and on which an object to be heated is placed It is the structure by which the mounting board which consists of is arrange | positioned. The rear plate constituting the rear wall of the heating chamber has a generally planar shape or a shape protruding rearward of the heating chamber.

このような従来の加熱調理器としては、例えば「電気式オーブンレンジの本体１は、加熱調理する食品等の被調理物４を収容する加熱室２、該加熱室２の底面２ｃに設けられた被調理物４を載置する回転しないテーブル３、加熱室２に熱風を循環させる熱風ユニット５、レンジ調理の加熱源であるマグネトロン６、マイクロ波を導く導波管７、加熱室２にマイクロ波を照射する回転アンテナ８及びアンテナモータ９等で構成されている。前記マグネトロン６、導波管７、回転アンテナ８及びアンテナモータ９等についてはすでに公知であるので、詳細な説明は省略するが、これらの構成部品は図示されているように加熱室２と本体１底面との間の機械室に配置されている。」（例えば特許文献１参照）というものが提案されている。   As such a conventional cooking device, for example, “a main body 1 of an electric microwave oven is provided in a heating chamber 2 for storing an object to be cooked 4 such as food to be cooked, and a bottom surface 2 c of the heating chamber 2. A non-rotating table 3 on which the object to be cooked 4 is placed, a hot air unit 5 that circulates hot air in the heating chamber 2, a magnetron 6 that is a heating source for range cooking, a waveguide 7 that guides microwaves, and a microwave in the heating chamber 2 The magnetron 6, the waveguide 7, the rotating antenna 8, the antenna motor 9 and the like are already known, and detailed description thereof is omitted. These components are disposed in a machine room between the heating chamber 2 and the bottom surface of the main body 1 as shown in the figure.

特開２００６−３１７０１６号公報（段落番号００３９，００４０、図１）Japanese Patent Laying-Open No. 2006-317016 (paragraph numbers 0039 and 0040, FIG. 1)

加熱室は上板、底板、側板、及び後板をそれぞれカシメ加工等で接合することによって製作される。この際、パンチ・ダイ等のカシメ機械先端部の治具が上板、底板、側板、及び後板と干渉しないように、カシメ箇所周辺には所定のクリアランスを確保する必要がある。例えば、底板と後板とを接合する場合、底板に折り曲げ加工された接合部と後板の側縁部とをカシメ加工等で接合するが、カシメ機械先端部の治具とアンテナ設置室との干渉を防止するために所定のクリアランスを確保する必要がある。   The heating chamber is manufactured by joining the upper plate, the bottom plate, the side plate, and the rear plate by caulking or the like. At this time, it is necessary to secure a predetermined clearance around the caulking location so that the jig at the front end portion of the caulking machine such as a punch / die does not interfere with the upper plate, the bottom plate, the side plate, and the rear plate. For example, when joining the bottom plate and the rear plate, the joint portion bent to the bottom plate and the side edge portion of the rear plate are joined by caulking or the like, but the jig at the front end portion of the caulking machine and the antenna installation chamber In order to prevent interference, it is necessary to ensure a predetermined clearance.

しかしながら、従来の加熱調理器では、カシメ加工等する際に必要な所定のクリアランス分により、アンテナ設置室と加熱室後板との距離が小さくできず、アンテナ設置室の奥行き寸法が小さくなっていた。このため、回転アンテナの直径や下ヒータを小さくしなければならず、被加熱物の加熱ムラが大きくなってしまうといった問題点があった。
また、加熱ムラを改善しようとして、回転アンテナの径を大きくすると本体の奥行きも大きくなってしまうといった問題点もあった。 However, in the conventional heating cooker, the distance between the antenna installation chamber and the heating chamber rear plate cannot be reduced due to a predetermined clearance required for caulking, etc., and the depth dimension of the antenna installation chamber is reduced. . For this reason, there has been a problem that the diameter of the rotating antenna and the lower heater have to be reduced, and heating unevenness of the object to be heated increases.
In addition, when the diameter of the rotating antenna is increased in order to improve heating unevenness, the depth of the main body also increases.

本発明は、上述の課題を解決するためになされたものであり、回転アンテナの直径や下ヒータを小さくすることなく、加熱ムラの少ない加熱調理器を得ることである。   The present invention has been made to solve the above-described problems, and it is an object of the present invention to obtain a cooking device with less heating unevenness without reducing the diameter of the rotating antenna and the lower heater.

本発明に係る加熱調理器は、前方に第１の開口部を有し、被加熱物が収容される加熱室と、前記第１の開口部を開閉する扉と、少なくとも高周波発生手段を含み前記被加熱物を加熱する加熱手段とを備えた加熱調理器において、前記加熱室は底板、側板、上板及び後板からなり、該底板には、アンテナ設置室となる凹部が形成され、前記後板は少なくとも前記加熱室方向に凸部を有し、前記加熱室は、前記凸部が前記底板、前記側板及び前記上板を接合した状態において後方に形成される第２の開口部に挿入されて、前記底板、前記側板及び前記上板と前記後板とが接合されることで形成されるものであり、前記後板は、前記凸部の後部側となる開口部の各縁辺から外周側に突設された第１の接合部を有し、前記底板、前記側板及び前記上板のそれぞれの後面側には、前記加熱室とは反対側に折り曲げられ、前記第１の接合部と対向する第２の接合部を有し、前記後板の前記第１の接合部と、前記底板、前記側板及び前記上板のそれぞれの前記第２の接合部とが接合されて、前記加熱室が形成され、前記凸部は、前記第２の開口部に挿入された状態において、前記第２の開口部全面を閉塞する形状であり、開口部を有する略箱体形状で、該開口部が前記凸部の後面に接合されて空間を形成するファンケースと、該ファンケースによって形成される前記空間に設けられた循環ファンと、該循環ファンの外周部に設けられた熱風ヒータと、前記循環ファンを回転させるファンモータと、該ファンモータが設けられたモータブラケットと、を有する熱風加熱循環手段を備え、前記凸部の内部空間に、前記熱風加熱循環手段のうちの前記ファンケース、前記循環ファン及び前記熱風ヒータを設けたものである。
The cooking device according to the present invention includes a heating chamber having a first opening in the front, in which an object to be heated is accommodated, a door that opens and closes the first opening, and at least high-frequency generating means. The heating chamber includes a bottom plate, a side plate, an upper plate, and a rear plate, and the bottom plate is formed with a recess serving as an antenna installation chamber, and the rear plate is provided with a heating means for heating an object to be heated. The plate has a convex portion at least in the direction of the heating chamber, and the heating chamber is inserted into a second opening formed at the rear in a state where the convex portion joins the bottom plate, the side plate, and the top plate. The bottom plate, the side plate, the top plate, and the rear plate are joined together, and the rear plate is arranged on the outer peripheral side from each edge of the opening that is the rear side of the convex portion. The bottom plate, the side plate, and the top plate. Each rear surface has a second joint that is bent to the opposite side of the heating chamber and faces the first joint, the first joint of the rear plate, and the bottom plate The side plate and the upper plate are joined to the second joint portion to form the heating chamber, and the convex portion is inserted into the second opening portion in the second opening. The fan case has a shape that closes the entire surface of the opening, a substantially box-like shape having an opening, the fan being joined to the rear surface of the convex portion to form a space, and the fan case formed by the fan case A hot air heating and circulation means having a circulation fan provided in the space, a hot air heater provided on the outer periphery of the circulation fan, a fan motor for rotating the circulation fan, and a motor bracket provided with the fan motor the provided, among the convex portions The space, the fan case of said hot air heating circulation means is obtained by providing the circulation fan and the hot air heater.

本発明に係る加熱調理器においては、加熱室は、後板の凸部が底板、側板及び上板を接合した状態において後方に形成される第２の開口部に挿入されて、底板、側板及び上板の第２の接合部と後板の第１の接合部とが接合されることで形成されているので、アンテナ設置室と加熱室後板との距離を小さくでき、回転アンテナの直径や下ヒータを小さくすることなく、加熱ムラの少ない加熱調理器を得ることができる。
In the heating cooker according to the present invention, the heating chamber is inserted into the second opening formed at the rear in a state where the convex portion of the rear plate joins the bottom plate, the side plate, and the upper plate, and the bottom plate, the side plate, and Since the second joint portion of the upper plate and the first joint portion of the rear plate are joined, the distance between the antenna installation chamber and the heating chamber rear plate can be reduced, and the diameter of the rotating antenna A cooking device with little heating unevenness can be obtained without reducing the size of the lower heater.

図１は、本発明の一実施の形態における加熱調理器の縦断面模式図である。図１に示す加熱調理器は、加熱室２の中央部に回転するテーブルがない、いわゆるターンテーブルレス式の加熱調理器である。この加熱調理器は、略箱体形状の本体１内に前面側（図１における左側）に開口部３を有する加熱室２が設けられており、開口部３を開閉するドア４が、ヒンジ部（図示せず）を介して開閉自在に本体１に取り付けられている。この開口部３が、本発明の第１の開口部に相当する。本実施形態においては、ドア４は縦開きのものを示しているが、横開きのものでもよく、ドア４の開閉方向は特に限定されない。なお、５はドア４を開閉するためのドアハンドル、６は各種の調理メニューキーやスタートボタン等が配置された操作部である。   FIG. 1 is a schematic longitudinal sectional view of a cooking device according to one embodiment of the present invention. The cooking device shown in FIG. 1 is a so-called turntableless cooking device that does not have a rotating table at the center of the heating chamber 2. This heating cooker is provided with a heating chamber 2 having an opening 3 on the front side (left side in FIG. 1) in a substantially box-shaped main body 1, and a door 4 that opens and closes the opening 3 is a hinge part. It is attached to the main body 1 so as to be openable and closable via (not shown). This opening 3 corresponds to the first opening of the present invention. In the present embodiment, the door 4 is shown as being vertically opened, but may be horizontally opened, and the opening / closing direction of the door 4 is not particularly limited. Reference numeral 5 denotes a door handle for opening and closing the door 4, and 6 denotes an operation unit on which various cooking menu keys, a start button and the like are arranged.

本体１の後部には高周波を発生させる高周波発生手段として、例えばマグネトロン７が設けられている。マグネトロン７から発生した高周波は導波管８を通じて加熱室２内に放射されるようになっている。   For example, a magnetron 7 is provided at the rear portion of the main body 1 as a high frequency generating means for generating a high frequency. The high frequency generated from the magnetron 7 is radiated into the heating chamber 2 through the waveguide 8.

加熱室２は、底板２１、上板２２、側板２３及び後板２４により構成されている。底板２１は、中央部付近に凹状に形成されたアンテナ設置室２１ｂが設けられており、後面側（図１における右側）には、加熱室２とは反対側に折り曲げられた接合部２１ａが形成されている。上板２２は、後面側に加熱室２とは反対側に折り曲げられた接合部２２ａが形成されており、また、側板２３の後面側にも加熱室２とは反対側に折り曲げられた接合部２３ａ（図示せず）が形成されている。底板２１、上板２２及び側板２３の側縁部にも接合部（図示せず）が設けられており、底板２１、上板２２及び側板２３は、それぞれの側縁部に設けられた接続部を例えばカシメ加工することにより接合されている。   The heating chamber 2 includes a bottom plate 21, an upper plate 22, a side plate 23, and a rear plate 24. The bottom plate 21 is provided with an antenna installation chamber 21b formed in a concave shape in the vicinity of the center portion, and a joining portion 21a bent to the opposite side of the heating chamber 2 is formed on the rear surface side (right side in FIG. 1). Has been. The upper plate 22 is formed with a joined portion 22 a bent on the rear surface side opposite to the heating chamber 2, and the joined portion bent on the rear surface side of the side plate 23 on the opposite side to the heating chamber 2. 23a (not shown) is formed. Joint portions (not shown) are also provided on the side edges of the bottom plate 21, the top plate 22 and the side plate 23, and the bottom plate 21, the top plate 22 and the side plate 23 are connected to the side edges. Are joined by, for example, caulking.

後板２４は、中央部付近に、加熱室２側に突出した略箱体形状の凸部２４ｂが形成されており、この凸部２４ｂは、底板２１、上板２２及び側板２３が接合された状態において加熱室２の後方に形成される略長方形状の開口部２５よりも若干小さい同形状となっている。この開口部２５が本発明の第２の開口部に相当する。つまり、後板２４は凸部２４ｂの開口部にこの開口部と同形状の略長方形状の開口を有する額縁形状の接合部２４ａが結合された形状となっている。
なお、底板２１、上板２２及び側板２３が接合された状態とは、各々別部材が接合された状態に限らず、少なくとも２つが一体成型されていてもよい。例えば、底板２１及び側板２３が一体成型され、この部材に上板２２を接合してもよい。 In the rear plate 24, a substantially box-shaped convex portion 24b protruding toward the heating chamber 2 is formed in the vicinity of the center portion, and the bottom plate 21, the upper plate 22 and the side plate 23 are joined to the convex portion 24b. In the state, the shape is slightly smaller than the substantially rectangular opening 25 formed behind the heating chamber 2. This opening 25 corresponds to the second opening of the present invention. That is, the rear plate 24 has a shape in which a frame-shaped joint portion 24a having a substantially rectangular opening having the same shape as the opening is coupled to the opening of the convex portion 24b.
The state in which the bottom plate 21, the upper plate 22, and the side plate 23 are joined is not limited to a state in which separate members are joined, and at least two of them may be integrally molded. For example, the bottom plate 21 and the side plate 23 may be integrally molded, and the upper plate 22 may be joined to this member.

開口部２５に凸部２４ｂを挿入すると、後板２４の接合部２４ａと底板２１、上板２２及び側板２３のそれぞれの接合部２１ａ，２２ａ及び２３ａとが対向することとなる。この対向する接合部２４ａと接合部２１ａ，２２ａ及び２３ａとを、それぞれ例えばカシメ加工することにより加熱室２が形成される。つまり、底板２１、上板２２、側板２３及び後面２４ｃによって加熱室２が形成されることとなる。このとき、加熱室２の開口部３と対向する凸部２４ｂの後面２４ｃは、底板２１に形成されたアンテナ設置室２１ｂよりも若干後方に位置している。   When the convex portion 24b is inserted into the opening 25, the joint portion 24a of the rear plate 24 and the joint portions 21a, 22a and 23a of the bottom plate 21, the upper plate 22 and the side plate 23 face each other. The heating chamber 2 is formed by, for example, caulking the facing joint 24a and the joints 21a, 22a, and 23a. That is, the heating chamber 2 is formed by the bottom plate 21, the upper plate 22, the side plate 23, and the rear surface 24c. At this time, the rear surface 24 c of the convex portion 24 b facing the opening 3 of the heating chamber 2 is located slightly behind the antenna installation chamber 21 b formed on the bottom plate 21.

アンテナ設置室２１ｂ内には、導波管８を通じて伝播される高周波を拡散して加熱室２に放射するための回転アンテナ９が設けられている。回転アンテナ９は、アンテナモータ１０の回転軸１０ａに取り付けられて回転駆動されるようになっている。また、アンテナ設置室２１ｂには加熱手段として下ヒータ１１が配置されている。このアンテナ設置室２１ｂを覆うように、上部には非誘電体からなる載置板１２が設けられている。この載置板１２に被加熱物１３が載置される。また、上板２２は、上面に加熱手段として上ヒータ１４が配置されている。   A rotating antenna 9 for diffusing high-frequency waves propagated through the waveguide 8 and radiating it to the heating chamber 2 is provided in the antenna installation chamber 21b. The rotating antenna 9 is attached to the rotating shaft 10a of the antenna motor 10 and is driven to rotate. The lower heater 11 is disposed in the antenna installation chamber 21b as a heating means. A mounting plate 12 made of a non-dielectric material is provided on the upper portion so as to cover the antenna installation chamber 21b. An object to be heated 13 is placed on the placement plate 12. In addition, the upper heater 22 is disposed on the upper surface of the upper plate 22 as a heating means.

後板２４の後面、つまり凸部２４ｂの内部には、オーブン調理に使われる熱風加熱循環手段３０が設けられている。この熱風加熱循環手段３０は、ファンケース３１、循環ファン３２、熱風ヒータ３３、モータブラケット３４及びファンモータ３５等で構成されている。
ファンケース３１は開口部を有する略箱体形状をしており、この開口部が凸部２４ｂの後面２４ｃに接合されて空間を形成している。この空間内には、後面２４ｃの略中央部と対向して循環ファン３２が設けられており、循環ファン３２の外周部には熱風ヒータ３３が設けられている。また、後板２４の接合部２４ａに渡設されたモータブラケット３４には、循環ファン３２を回転させるファンモータ３５が設けられており、ファンモータ３５の回転軸３５ａに循環ファン３２が取り付けられている。 On the rear surface of the rear plate 24, that is, inside the convex portion 24b, hot air heating circulation means 30 used for oven cooking is provided. The hot air heating and circulating means 30 includes a fan case 31, a circulating fan 32, a hot air heater 33, a motor bracket 34, a fan motor 35, and the like.
The fan case 31 has a substantially box shape having an opening, and the opening is joined to the rear surface 24c of the convex portion 24b to form a space. In this space, a circulation fan 32 is provided facing the substantially central portion of the rear surface 24 c, and a hot air heater 33 is provided on the outer periphery of the circulation fan 32. In addition, a motor motor 34 that rotates the circulation fan 32 is provided in the motor bracket 34 that is provided to the joint 24 a of the rear plate 24, and the circulation fan 32 is attached to the rotation shaft 35 a of the fan motor 35. Yes.

なお、熱風加熱循環手段３０は、後板２４が底板２１、上板２２及び側板２３と接合される前に凸部２４ｂの内部に設けられてもよいし、接合後に設けられても良い。また、モータブラケット３４は、後板２４が底板２１、上板２２及び側板２３と接合される際に一緒にカシメ加工等で接合されてもよいし、別に取り付ける構成としてもよい。   The hot air heating circulation means 30 may be provided inside the convex portion 24b before the rear plate 24 is joined to the bottom plate 21, the upper plate 22, and the side plate 23, or may be provided after the joining. The motor bracket 34 may be joined together by caulking or the like when the rear plate 24 is joined to the bottom plate 21, the upper plate 22, and the side plate 23, or may be separately attached.

後面２４ｃの略中央部、つまり循環ファン３２と対向する位置には、多数のパンチング孔からなる吸込孔２４ｄが設けられている。また、後面２４ｃの熱風ヒータ３３と対向する位置には、多数のパンチング孔からなる吹出孔２４ｅが設けられている。循環ファン３２を回転させることにより、加熱室２内の空気を吸込孔２４ｄから吸い込み、熱風ヒータ３３で加熱して吹出孔２４ｅから吹き出すので、加熱室２内を均一にかつ迅速に加熱することができる。   Suction holes 24 d made up of a number of punching holes are provided at a substantially central portion of the rear surface 24 c, that is, at a position facing the circulation fan 32. Further, at positions facing the hot air heater 33 on the rear surface 24c, blowout holes 24e made up of a number of punching holes are provided. By rotating the circulation fan 32, the air in the heating chamber 2 is sucked from the suction hole 24d, heated by the hot air heater 33 and blown out from the blowout hole 24e, so that the inside of the heating chamber 2 can be heated uniformly and quickly. it can.

上述したように、加熱室２は底板２１、上板２２、側板２３及び後板２４をそれぞれカシメ加工等で接合することによって製作される。この際、パンチ・ダイ等のカシメ機械先端部の治具が底板２１、上板２２、側板２３及び後板２４と干渉しないように、カシメ箇所周辺には所定のクリアランスを確保する必要がある。例えば、底板２１と後板２４とを接合する場合、つまり接合部２１ａと２４ａを接合する場合は、カシメ機械先端部の治具とアンテナ設置室２１ｂとの干渉を防止するために図１に示すクリアランスＡを確保する必要がある。   As described above, the heating chamber 2 is manufactured by joining the bottom plate 21, the top plate 22, the side plate 23, and the rear plate 24 by caulking or the like. At this time, it is necessary to secure a predetermined clearance around the caulking location so that the jig at the front end portion of the caulking machine such as a punch and die does not interfere with the bottom plate 21, the upper plate 22, the side plate 23 and the rear plate 24. For example, when the bottom plate 21 and the rear plate 24 are joined, that is, when the joining portions 21a and 24a are joined, as shown in FIG. 1 in order to prevent interference between the jig at the front end portion of the caulking machine and the antenna installation chamber 21b. Clearance A must be secured.

図２は、比較例として示した従来の加熱調理器の縦断面模式図である。なお、図１に示す本実施形態の加熱調理器と同一機能のものについては同一の符号を用いて述べることとする。
従来の加熱調理器の後板２４は、凸部２４ｂが形成されていない略平面形状となっている。従来の加熱調理器においても、底板２１と後板２４とを接合する際にクリアランスＡを確保する必要があるが、後板２４に凸部２４ｂが形成されていないため、凸部２４ｂの幅分だけアンテナ設置室２１ｂの奥行き寸法が小さくなってしまう。このため、回転アンテナ９の直径や下ヒータ１１を小さくしなければならないので、高周波が被加熱物１３に照射されにくくなる。これが被加熱物１３の加熱ムラの原因の１つとなっている。また、加熱ムラを改善するために、回転アンテナ９の直径や下ヒータ１１を大きくしても、凸部２４ｂの幅分だけ加熱室２の奥行き寸法が大きくなってしまい、被加熱物１３の加熱ムラの改善効果は小さい。 FIG. 2 is a schematic longitudinal sectional view of a conventional cooking device shown as a comparative example. In addition, suppose that the thing of the same function as the heating cooker of this embodiment shown in FIG. 1 is described using the same code | symbol.
The rear plate 24 of the conventional cooking device has a substantially planar shape in which the convex portion 24b is not formed. In the conventional cooking device, it is necessary to secure the clearance A when joining the bottom plate 21 and the rear plate 24. However, since the convex portion 24b is not formed on the rear plate 24, the width of the convex portion 24b is required. Only the depth dimension of the antenna installation chamber 21b becomes small. For this reason, since the diameter of the rotating antenna 9 and the lower heater 11 must be reduced, it becomes difficult for the object to be heated 13 to be irradiated with high frequency. This is one of the causes of heating unevenness of the article 13 to be heated. Further, even if the diameter of the rotating antenna 9 and the lower heater 11 are increased in order to improve the heating unevenness, the depth dimension of the heating chamber 2 is increased by the width of the convex portion 24b, and the heating of the article 13 to be heated is performed. Unevenness improvement effect is small.

一方、本実施形態における加熱調理器においては、図１に示されるように、後板２４に凸部２４ｂを形成したので、底板２１と後板２４とを接合する際にクリアランスＡを確保しても、回転アンテナ９の直径や下ヒータ１１を小さくする必要が無く、また加熱室２を大きくする必要がない。したがって、被加熱物１３の加熱ムラを改善することができる。   On the other hand, in the heating cooker according to the present embodiment, as shown in FIG. 1, since the convex portion 24 b is formed on the rear plate 24, the clearance A is secured when the bottom plate 21 and the rear plate 24 are joined. However, the diameter of the rotating antenna 9 and the lower heater 11 do not need to be reduced, and the heating chamber 2 does not need to be enlarged. Therefore, the uneven heating of the article to be heated 13 can be improved.

熱風加熱循環手段３０を凸部２４ｂ内に設けたので、従来の加熱調理器と比べて、同じ直径の回転アンテナ９や下ヒータ１１を備えた場合、加熱調理器本体１の省スペース化を図ることができる。
また、加熱調理器本体１を同じ大きさとした場合、従来の加熱調理器よりも大径の回転アンテナ９や下ヒータ１１を設けることが可能となり、被加熱物１３の加熱ムラを改善することができる。 Since the hot air heating and circulating means 30 is provided in the convex portion 24b, the heating cooker main body 1 can be saved in space when the rotating antenna 9 and the lower heater 11 having the same diameter are provided as compared with the conventional cooking device. be able to.
Moreover, when the heating cooker main body 1 is made into the same magnitude | size, it becomes possible to provide the rotating antenna 9 and the lower heater 11 which are larger diameter than the conventional heating cooker, and can improve the heating nonuniformity of the to-be-heated object 13. it can.

なお、本実施形態では、後板２４は凸部２４ｂの開口部にこの開口部と同形状の略長方形状の開口を有する額縁形状の接合部２４ａが結合された形状となっていたが、接合部２４ａは額縁形状に限定されるわけではなく、凸部２４ｂの開口部の各縁辺に折り曲げ部を形成して接合部２４としてもよい。   In the present embodiment, the rear plate 24 has a shape in which the frame-shaped joint portion 24a having a substantially rectangular opening having the same shape as the opening portion is joined to the opening portion of the convex portion 24b. The part 24a is not limited to the frame shape, and a bent part may be formed on each edge of the opening of the convex part 24b to form the joint part 24.

底板２１、上板２２、側板２３及び後板２４の接合方法もカシメ加工に限定されない。例えばスポット溶接やリベット接合等でも可能である。   The joining method of the bottom plate 21, the upper plate 22, the side plate 23, and the rear plate 24 is not limited to the caulking process. For example, spot welding or rivet joining is also possible.

本実施形態の加熱調理器においては、下ヒータ１１、上ヒータ１４及び熱風ヒータ３３（熱風加熱循環手段３０）と３つのヒータを設けたが、必ずしも全てのヒータを設ける必要はない。例えば下ヒータ１１及び上ヒータ１４で構成してもよいし、上ヒータ１４及び熱風ヒータ３３（熱風加熱循環手段３０）で構成してもよい。   In the heating cooker of the present embodiment, the lower heater 11, the upper heater 14, the hot air heater 33 (hot air heating circulation means 30) and the three heaters are provided, but it is not necessary to provide all the heaters. For example, it may be constituted by the lower heater 11 and the upper heater 14, or may be constituted by the upper heater 14 and the hot air heater 33 (hot air heating circulation means 30).

本発明の一実施形態における加熱調理器の縦断面模式図である。It is a longitudinal cross-sectional schematic diagram of the heating cooker in one Embodiment of this invention. 従来の加熱調理器の縦断面模式図である。It is a longitudinal cross-sectional schematic diagram of the conventional heating cooker.

符号の説明Explanation of symbols

１ 本体、２ 加熱室、３ 開口部、４ ドア、５ ドアハンドル、６ 操作部、７ マグネトロン、８ 導波管、９ 回転アンテナ、１０ アンテナモータ、１０ａ 回転軸、１１ 下ヒータ、１２ 載置板、１３ 被加熱物、１４ 上ヒータ、２１ 底板、２１ａ 接合部、２１ｂ アンテナ設置室、２２ 上板、２２ａ 接合部、２３ 側板、２３ａ 接合部、２４ 後板、２４ａ 接合部、２４ｂ 凸部、２４ｃ 後面、２４ｄ 吸込孔、２４ｅ 吹出孔、２５ 開口部、３０ 熱風加熱循環手段、３１ ファンケース、３２ 循環ファン、３３ 熱風ヒータ、３４ モータブラケット、３５ ファンモータ、３５ａ 回転軸。   DESCRIPTION OF SYMBOLS 1 Main body, 2 Heating chamber, 3 Opening part, 4 Door, 5 Door handle, 6 Operation part, 7 Magnetron, 8 Waveguide, 9 Rotating antenna, 10 Antenna motor, 10a Rotating shaft, 11 Lower heater, 12 Mounting plate 13 Heated object, 14 Upper heater, 21 Bottom plate, 21a joint, 21b Antenna installation chamber, 22 Upper plate, 22a Joint, 23 Side plate, 23a Joint, 24 Rear plate, 24a Joint, 24b Convex, 24c Rear surface, 24d suction hole, 24e blowout hole, 25 opening, 30 hot air heating circulation means, 31 fan case, 32 circulation fan, 33 hot air heater, 34 motor bracket, 35 fan motor, 35a rotating shaft.

Claims (1)

前方に第１の開口部を有し、被加熱物が収容される加熱室と、
前記第１の開口部を開閉する扉と、
少なくとも高周波発生手段を含み前記被加熱物を加熱する加熱手段とを備えた加熱調理器において、
前記加熱室は底板、側板、上板及び後板からなり、
該底板には、アンテナ設置室となる凹部が形成され、
前記後板は少なくとも前記加熱室方向に凸部を有し、
前記加熱室は、前記凸部が前記底板、前記側板及び前記上板を接合した状態において後方に形成される第２の開口部に挿入されて、前記底板、前記側板及び前記上板と前記後板とが接合されることで形成されるものであり、
前記後板は、前記凸部の後部側となる開口部の各縁辺から外周側に突設された第１の接合部を有し、
前記底板、前記側板及び前記上板のそれぞれの後面側には、前記加熱室とは反対側に折り曲げられ、前記第１の接合部と対向する第２の接合部を有し、
前記後板の前記第１の接合部と、前記底板、前記側板及び前記上板のそれぞれの前記第２の接合部とが接合されて、前記加熱室が形成され、
前記凸部は、前記第２の開口部に挿入された状態において、前記第２の開口部全面を閉塞する形状であり、
開口部を有する略箱体形状で、該開口部が前記凸部の後面に接合されて空間を形成するファンケースと、該ファンケースによって形成される前記空間に設けられた循環ファンと、該循環ファンの外周部に設けられた熱風ヒータと、前記循環ファンを回転させるファンモータと、該ファンモータが設けられたモータブラケットと、を有する熱風加熱循環手段を備え、
前記凸部の内部空間に、前記熱風加熱循環手段のうちの前記ファンケース、前記循環ファン及び前記熱風ヒータを設けたことを特徴とする加熱調理器。 A heating chamber having a first opening in the front and containing an object to be heated;
A door that opens and closes the first opening;
In a heating cooker comprising at least high-frequency generating means and heating means for heating the object to be heated,
The heating chamber consists of a bottom plate, a side plate, a top plate and a rear plate,
The bottom plate is formed with a recess serving as an antenna installation chamber,
The rear plate has a convex portion at least in the heating chamber direction,
The heating chamber is inserted into a second opening formed rearward in a state where the convex portion joins the bottom plate, the side plate, and the top plate, and the bottom plate, the side plate, the top plate, and the rear It is formed by joining the plate,
The rear plate has a first joint projecting outward from each edge of the opening on the rear side of the convex portion,
On the rear side of each of the bottom plate, the side plate, and the top plate, there is a second joint that is bent to the opposite side of the heating chamber and faces the first joint,
The first joining portion of the rear plate and the second joining portions of the bottom plate, the side plate, and the upper plate are joined to form the heating chamber,
The convex portion has a shape that closes the entire surface of the second opening in a state of being inserted into the second opening,
A fan case having a substantially box shape having an opening, the opening being joined to the rear surface of the convex portion to form a space, a circulation fan provided in the space formed by the fan case, and the circulation A hot air heater provided on the outer periphery of the fan, a fan motor for rotating the circulation fan, and a motor bracket provided with the fan motor, and hot air heating circulation means,
The heating cooker characterized in that the fan case, the circulation fan, and the hot air heater of the hot air heating circulation means are provided in the internal space of the convex portion.
JP2007185908A 2007-07-17 2007-07-17 Cooker Expired - Fee Related JP5057871B2 (en)

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JPS5517023A (en) * 1978-07-19 1980-02-06 Matsushita Electric Ind Co Ltd Hot air circulating type gas oven
JPS61294797A (en) * 1985-06-24 1986-12-25 松下電器産業株式会社 High frequency heater
JPH05340542A (en) * 1992-06-08 1993-12-21 Toshiba Corp Heating cooker
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