JP5848542B2 - Flyer - Google Patents

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JP5848542B2
JP5848542B2 JP2011165420A JP2011165420A JP5848542B2 JP 5848542 B2 JP5848542 B2 JP 5848542B2 JP 2011165420 A JP2011165420 A JP 2011165420A JP 2011165420 A JP2011165420 A JP 2011165420A JP 5848542 B2 JP5848542 B2 JP 5848542B2
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oil
oil tank
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cooking oil
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JP2013027541A (en
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下川　克介
克介 下川
真治 村上
真治 村上
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サン・プラント工業株式会社
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Description

本願発明は、主に業務用として食材を天ぷらやフライ等の揚げ物に調理するフライヤーに関するものである。   The present invention relates to a fryer that cooks foods in deep-fried foods such as tempura and fries mainly for business use.

従来より、揚げ物調理を行うための、調理油を満たした油槽と、その調理油を加熱するためのガスバーナーやヒーター、熱交換器等の加熱装置とを備えたフライヤーが知られている。   DESCRIPTION OF RELATED ART Conventionally, the fryer provided with heating apparatuses, such as an oil tank filled with cooking oil for cooking fried food, and a gas burner, a heater, a heat exchanger for heating the cooking oil, is known.

特開平１０−２９５５５８号公報JP-A-10-295558 特開２００１−０９５６９４号公報JP 2001-095694 A

例えば、特許文献１では、調理油を満たした油槽の底部をガスバーナーで直接加熱することによって調理油を加熱し、特許文献２では、調理油を満たした油槽内に備えられたヒーターによって調理油を加熱している。このような加熱方法を用いると、調理油は局部加熱され、その局部に調理中に発生した揚げ滓が存在すると、その揚げ滓をろ紙やフィルター、人の手によるすくい取り等によって濾過除去する前に、その揚げ滓が炭化してしまうなどの調理油の劣化を早める恐れがあった。
また、ろ紙やフィルター等の濾過部を備えた油槽と、熱交換器を備えた循環部とを備えたフライヤーが知られている。油槽と循環部とを循環している調理油と、熱交換器内の高温の熱媒体とを、熱交換器のパイプ等の1枚の金属板を介して熱交換器させることによってその熱を調理油に伝達するため、調理油は高温の金属板に接触することになり、調理油の劣化が促進される恐れがあった。また、濾過部によって濾過除去できなかったわずかな揚げ滓が熱交換器のパイプに溜まり、熱交換器の熱媒体と連続的に接触することによって、その揚げ滓が炭化する恐れがあった。その結果、調理油の劣化を早め、調理品質の低下につながることが懸念された。上記のフライヤーの熱交換器として蒸気式熱交換器を用いた場合であっても、２００℃近くに加熱された蒸気の熱をパイプ等の1枚の金属板を介して調理油を直接加熱する方式には変わりがない。 For example, in Patent Document 1, cooking oil is heated by directly heating the bottom of an oil tank filled with cooking oil with a gas burner. In Patent Document 2, cooking oil is heated by a heater provided in the oil tank filled with cooking oil. Is heating up. When such a heating method is used, the cooking oil is locally heated, and if there is any deep-fried rice cake generated during cooking, the deep-fried rice cake is filtered and removed by filter paper, filter, human scooping, etc. In addition, there is a risk of premature deterioration of cooking oil, such as the fried rice cake being carbonized.
In addition, a fryer is known that includes an oil tank provided with a filtration unit such as filter paper and a filter, and a circulation unit provided with a heat exchanger. The cooking oil circulating in the oil tank and the circulation section and the high-temperature heat medium in the heat exchanger are heat-exchanged through a single metal plate such as a heat exchanger pipe. Since the cooking oil is transmitted to the cooking oil, the cooking oil comes into contact with the high-temperature metal plate, which may promote deterioration of the cooking oil. In addition, a small amount of deep-fried rice cake that could not be filtered out by the filtration unit was collected in the pipe of the heat exchanger, and the deep-fried rice cake could be carbonized due to continuous contact with the heat medium of the heat exchanger. As a result, there was a concern that cooking oil could be quickly deteriorated, leading to a reduction in cooking quality. Even when a steam heat exchanger is used as a heat exchanger for the above-mentioned fryer, the cooking oil is directly heated through a single metal plate such as a pipe using the heat of the steam heated to near 200 ° C. There is no change in the method.

本願発明はこのことに鑑み、油槽に満たした調理油をガスバーナーやヒーター、熱交換器等の加熱装置によって直接加熱するのではなく、調理油と、加熱装置によって加熱された熱交換用油とを熱交換させることによって調理油を加熱することで、調理油の局部加熱及び局部加熱による揚げ滓の炭化等による調理油の劣化を抑制することができるフライヤーの提供を目的とする。より望ましくは、維持管理が容易で、かつ経済性、安全性、環境性に優れたフライヤーの提供を図らんとするものである。   In view of this, the present invention does not directly heat cooking oil filled in the oil tank by a heating device such as a gas burner, a heater, or a heat exchanger, but cooking oil and heat exchange oil heated by the heating device It is an object of the present invention to provide a fryer that can suppress deterioration of cooking oil due to local heating of cooking oil and carbonization of fried rice cake by heating the cooking oil by heating the cooking oil. More desirably, it is intended to provide a flyer that is easy to maintain and is excellent in economy, safety, and environment.

上記の課題を解決するため、本願発明は、調理油を満たし食材を揚げる油槽と、上記油槽の前後方向に上記食材を搬送する搬送コンベヤと、加熱部と、上記加熱部内の熱媒体によって上記調理油を加熱するフライヤーにおいて、上記フライヤーは、上記熱媒体を加熱するための加熱装置を上記油槽の外側に備え、上記熱媒体は熱交換用油であり、上記油槽内には、上記油槽の底部を上方から覆う還流板を備え、上記還流板は、上記油槽の幅方向に全幅にわたって備えられ、上記油槽の上下方向を上層と下層との２層に分けるものであり、上記油槽の前方側端部と上記還流板との間には、上記油槽の幅方向の全幅にわたって隙間が形成され、上記搬送コンベアは、上記上層に配設され、上記食材を搬送中に揚げるものであり、上記下層を通って上記油槽の前方側端部に向う往路の流れと、上記油槽の幅方向の全幅にわたって形成された上記隙間から上記上層に導かれ、上記上層を通って上記油槽の後方に向かう復路の流れとの、調理油の往復の流れが移送ポンプによって発生するものであり、上記加熱部は、境界壁を介して上記下層を通る上記調理油と上記熱交換用油とを熱交換させることによって、上記調理油を加熱することを特徴とするフライヤーを提供する。
また、本願発明は、濾過部を上記油槽の外側に備え、上記油槽の後方側端部には、上記上層の調理油を上記濾過部に導くための導入路と、上記濾過部にて濾過された調理油を上記下層に吐出するための吐出部とを備え、上記導入路と上記吐出部とは、上記油槽の幅方向に伸びる溝状となっており、上記調理油は、上記油槽と上記濾過部とを循環するものであり、上記吐出部から上記下層を通って上記油槽の前方側端部に向う往路の流れと、上記油槽の幅方向の全幅にわたって形成された上記隙間から上記上層に導かれ、上記上層を通って上記油槽の前方側端部から上記導入路に向かう復路の流れの、調理油の往復の流れが移送ポンプによって発生するものであるものとして実施することができる。
また、本願発明は、上記加熱装置は、上記熱交換用油を加熱し、上記調理油を直接加熱しないものであり、上記熱交換用油が食用油であるものとして実施することができる。
また、本願発明は、上記加熱部には複数のヒートパイプを備え、上記複数のヒートパイプが上記油槽内に配設され、上記複数のヒートパイプの外周壁が上記境界壁であるものとして実施することができる。
また、本願発明は、上記加熱部が上記油槽の下方に配設され、上記油槽の底部が上記境界壁であり、上記油槽の底部には複数の起伏を備え、上記複数の起伏は、上記油槽の底部から上記加熱部に向けて突出しているものとして実施することができる。 In order to solve the above problems, the present invention provides an oil tank that fills cooking oil and fries food, a conveyor that conveys the food material in the front-rear direction of the oil tank, a heating unit, and a heating medium in the heating unit. In the fryer for heating oil, the fryer includes a heating device for heating the heat medium outside the oil tank, the heat medium is heat exchange oil, and the oil tank includes a bottom portion of the oil tank. The reflux plate is provided over the entire width in the width direction of the oil tank, and divides the vertical direction of the oil tank into two layers of an upper layer and a lower layer, and the front side end of the oil tank. A gap is formed across the entire width in the width direction of the oil tank between the section and the reflux plate, and the conveyor is disposed in the upper layer and fries the food during conveyance. Go through A forward flow toward the front end of the oil tank, and a return flow guided from the gap formed across the entire width of the oil tank to the upper layer and passing through the upper layer toward the rear of the oil tank. The reciprocating flow of the cooking oil is generated by a transfer pump, and the heating unit heat-exchanges the cooking oil and the heat exchanging oil passing through the lower layer through a boundary wall, thereby cooking the cooking oil. Provided is a fryer characterized by heating oil.
Further, the present invention is provided with a filtration part on the outside of the oil tank, and is filtered at the rear side end part of the oil tank by the introduction path for guiding the upper cooking oil to the filtration part and the filtration part. A discharge portion for discharging the cooking oil to the lower layer, the introduction path and the discharge portion are in a groove shape extending in the width direction of the oil tank, and the cooking oil includes the oil tank and the oil The filter part is circulated, and flows from the discharge part through the lower layer to the forward end of the oil tank and from the gap formed across the entire width of the oil tank to the upper layer. The recirculation flow of the cooking oil that is guided and passes through the upper layer to the introduction passage from the front end of the oil tank to the introduction passage is generated by a transfer pump.
Moreover, this invention can implement the said heating apparatus as what heats the said oil for heat exchange, does not heat the said cooking oil directly, and the said oil for heat exchange is an edible oil.
In the present invention, the heating unit includes a plurality of heat pipes, the plurality of heat pipes are disposed in the oil tank, and an outer peripheral wall of the plurality of heat pipes is the boundary wall. be able to.
Further, the present invention, the heating portion is disposed below the oil tank, the bottom of the oil tank is the boundary wall, the bottom of the upper Symbol oil vessel provided with a plurality of undulations, said plurality of undulations, the It can implement as what protrudes toward the said heating part from the bottom part of an oil tank.

本願発明では、フライヤーにあって、加熱部と油槽内とが境界壁を介して区画され、加熱装置で加熱された加熱部内の熱交換用油と調理油とを境界壁を介して熱交換させることによって調理油を加熱するため、調理油の局部加熱及び局部加熱による揚げ滓の炭化を防止し、ひいては調理油の劣化を抑制することができたものである。また、調理油を加熱機器で直接加熱する場合の、調理開始時の調理油と加熱機器との温度差と比べて、調理開始時の調理油と熱交換用油との温度差が小さいことから、加熱温度の管理が行いやすい。
また、本願発明では、上記の発明の効果に加え、加熱装置で加熱される熱交換用油に食用油を用いることによって、安全性の高いフライヤーを提供することができたものである。また、食用油同士を境界壁を介して熱交換させることによって、調理油と熱交換用油との比熱が近いまたは等しいために調理中の両者の温度差を小さく又はゼロとすることができることから、調理温度等の管理が行いやすい。さらに、揚げ滓を濾過除去した調理油を熱交換用油として用いることができるため、調理油の再利用が可能である。
また、本願発明では、上記の発明の効果に加え、油槽内に配設された複数のヒートパイプの外周壁を境界壁として用い、加熱部内の熱交換用油と油槽内の調理油とを境界壁を介して熱交換させることによって、調理油と熱交換用油との効率的な熱交換を行うことができることから、調理油を効率よく加熱することができたものである。
また、本願発明では、上記の発明の効果に加え、油槽の底部を境界壁として用いて、加熱部内の熱交換用油と油槽内の調理油とを境界壁を介して熱交換させることによって、調理油と熱交換用油との効率的な熱交換を行うことができることから、調理油を効率よく加熱することができたものであり、油槽の底部に複数の起伏を備え、その複数の起伏が油槽の底部から油槽の下方に配設された加熱部に向けて突出していることによって、油槽内部に揚げ物調理に必要な調理空間を確保しつつ、調理油と熱交換用油との効率的な熱交換を行うことができたものである。 In the present invention , in the fryer, the heating unit and the oil tank are partitioned through a boundary wall, and heat exchange oil and cooking oil in the heating unit heated by the heating device are exchanged through the boundary wall. Since cooking oil is heated by this, local heating of cooking oil and carbonization of the deep-fried rice cake by local heating were prevented, and by extension, deterioration of cooking oil could be suppressed. In addition, the temperature difference between the cooking oil at the start of cooking and the oil for heat exchange is small compared to the temperature difference between the cooking oil at the start of cooking and the heating equipment when cooking oil is directly heated by a heating device. Easy to manage the heating temperature.
Moreover, in this invention , in addition to the effect of said invention, the fryer with high safety | security was able to be provided by using edible oil for the heat exchange oil heated with a heating apparatus. Moreover, since the specific heat of cooking oil and heat exchange oil is near or equal by making heat exchange between edible oils via a boundary wall, the temperature difference of both during cooking can be made small or zero. Easy to manage cooking temperature. Furthermore, since cooking oil from which the fried rice cake has been filtered off can be used as heat exchange oil, cooking oil can be reused.
Further, in the present invention, in addition to the effect of the above invention, with the outer peripheral wall of the plurality of heat pipes disposed within the oil tank as a boundary wall and a cooking oil heat exchange oil and the oil tank in the pressurized thermal unit By exchanging heat through the boundary wall, efficient heat exchange between the cooking oil and the heat exchange oil can be performed, so that the cooking oil can be efficiently heated.
In the present invention , in addition to the effects of the above invention, by using the bottom of the oil tank as a boundary wall, heat exchange between the oil for heat exchange in the heating section and the cooking oil in the oil tank through the boundary wall, The cooking oil can be efficiently heated because the cooking oil can be efficiently exchanged with the heat exchange oil, and the bottom of the oil tank has a plurality of undulations. Projecting from the bottom of the oil tank toward the heating section disposed below the oil tank, ensuring a cooking space necessary for cooking fried food inside the oil tank, and efficient cooking oil and heat exchange oil Heat exchange was possible.

本願発明に係るフライヤーの第１実施形態を側面視した構造説明図である。It is structure explanatory drawing which looked at 1st Embodiment of the fryer concerning this invention from the side. 同フライヤーを平面視した構造説明図である。It is structure explanatory drawing which planarly viewed the flyer. 同フライヤーの油槽と加熱部と濾過部との関係を示す構造説明図である。It is structure explanatory drawing which shows the relationship between the oil tank of the same fryer, a heating part, and a filtration part. （Ａ）は同フライヤーの濾過部を側面視した構造説明図であり、（Ｂ）は濾過部を平面視した構造説明図である。(A) is structure explanatory drawing which looked at the filtration part of the flyer side, and (B) is structure explanatory drawing which planarly viewed the filtration part. 同濾過部のフィルターの要部拡大図である。It is a principal part enlarged view of the filter of the filtration part. 本願発明に係るフライヤーの第２実施形態を側面視した構造説明図である。It is structure explanatory drawing which looked at 2nd Embodiment of the fryer concerning this invention from the side. 同フライヤーを平面視した構造説明図である。It is structure explanatory drawing which planarly viewed the flyer. 実施例１において、調理油の温度及び熱交換用油の温度の時間変化を示すグラフである。In Example 1, it is a graph which shows the time change of the temperature of the temperature of cooking oil, and the temperature of oil for heat exchange.

以下、図面に基づき本願発明の実施の形態の一例をとりあげて説明する。なお、本願の各請求項並びに明細書における上下前後左右の表現は、相対的な位置関係を示すにとどまり、絶対的な位置を特定するものではない。また、説明の便宜上、図面の各図において、Ｕは上方を、Ｄは下方を、Ｆは前方を、Ｂは後方をそれぞれ示す。   Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. It should be noted that expressions in the claims and the specification of the present application in the vertical and horizontal directions only indicate a relative positional relationship, and do not specify an absolute position. For convenience of explanation, in each of the drawings, U indicates the upper side, D indicates the lower side, F indicates the front side, and B indicates the rear side.

本願発明に係るフライヤー１０は、図１〜３に示すように、調理油を満たし食材８１を揚げる油槽１１と、油槽１１の下方に配設される加熱部３１と、加熱部３１内の熱媒体を加熱する加熱装置４１と、調理油を濾過し調理油と調理中に生じる揚げ滓とを分離する濾過部５１とを備える。   As shown in FIGS. 1 to 3, the fryer 10 according to the present invention includes an oil tank 11 that fills cooking oil and fries the food 81, a heating unit 31 disposed below the oil tank 11, and a heat medium in the heating unit 31. And a filtering unit 51 that filters cooking oil and separates cooking oil and fried rice cake produced during cooking.

油槽１１は、上面を開口した平面視略矩形の容器形状に形成され、油槽の底部１２には、その底部１２から下方に向けて突出した複数の起伏１３が、油槽１１の長手方向に沿って連続して備えられている。本実施形態においては、図３に示すように、油槽１１の長手方向と交わる方向（以下、幅方向とする）の断面が油槽の底部１２から下方に向けて正三角形の頂点が突出した逆正三角形形状の連続した起伏となっている。上記の複数の起伏１３は、油槽１１の幅方向に沿って連続して設けられていてもよく、その起伏１３の形状は、油槽の底部１２から上方または下方に向けて突出した凹凸形状の起伏であれば、逆三角形形状の他に、波形や台形形状等であってもよい。また、上記の複数の起伏１３は、本願発明の目的を逸脱しない範囲において、油槽の底部１２の一部にのみ備えられていてもよく、油槽１１の長手方向または幅方向に沿って連続して備えられていなくてもよい。なお、油槽の底部１２は、フラットにしてもよく、油槽１１の長手方向の前方側端部から後述する導入路１５に向けて徐々に低くなるように傾斜させたものであってもよい。油槽の底部１２に複数の起伏１３を設ける場合には、調理油と加熱された加熱部３１内の熱媒体とを油槽の底部１２を介して熱交換させる際の接触面積を増やすために、その底部１２に起伏を有しないフラットなものと比較して、複数の起伏１３を備えた油槽の底部１２の面積を１．５〜３倍となるように設定することが望ましく、２〜３倍となるように設定することがより望ましい。本実施形態においては、油槽の底部１２に起伏を有しないフラットなものと比較して、複数の起伏１３を備えた油槽の底部１２の面積が２倍となっている。
また、図１に示すように、油槽１１の外側であって、その長手方向の後方側端部（図面右側）には、濾過部５１が設けられており、この濾過部５１には後述するフィルター７１等が配置されている。そして、油槽１１の長手方向の後方側端部には、油槽１１内の調理油を濾過部５１に導くための導入路１５と、後述する濾過部５１にて濾過された調理油を油槽１１に吐出するための吐出部１６とが、油槽１１の長手方向を横切るように設けられている。この導入路１５と吐出部１６とは、油槽１１の他の部分の底部よりも低く、油槽１１の幅方向に伸びる溝状となっている。図１の油槽１１の長手方向の後方側端部において、前方側に配設されているのが吐出部１６であり、後方側に配設されているのが導入路１５である。吐出部１６の底部中央には吐出管６０が接続されている。また、油槽内１１において、油槽の底部１２に備えられた複数の起伏１３の、前方側端部を除くほぼ全てを上方から覆うように還流板１７が配設されている。還流板１７が、油槽の底部１２に備えられた、前方側端部を除くほぼ全ての複数の起伏１３を覆うことによって、油槽１１の上下方向を、還流板１７を隔てて上層ａと下層ｂとの２層に分けることができるほか、調理中に生じる比較的大きな揚げ滓が還流板１７に落下し油槽の底部１２に落下することを防ぐことができる。その他、油槽の両側部１４，１４の上端には、油槽の両側部１４，１４に沿って油槽の両側部１４，１４に対して外側上方に突出したフランジ１８，１８が設けられている。本実施形態においては、導入路１５、吐出部１６及び濾過部５１を油槽１１の長手方向の後方側端部に設けているが、それぞれを油槽１１の長手方向の中央や前方側端部に設けてもよい。
油槽１１に満たされた調理油は、この油槽１１と濾過部５１とを循環しており、図１〜図３に示すように、油槽１１内において、油槽１１の長手方向の後方側端部に配設された吐出部１６から還流板１７で覆われた油槽の底部１２に備えられた複数の起伏１３（下層ｂ）を通って油槽１１の長手方向の前方側端部に向かう往路の流れと、油槽１１の長手方向の前方側端部と還流板１７の隙間から還流板１７の上方（上層ａ）に導かれ、油槽１１の長手方向の前方側端部から油槽１１の後方側端部に配設された導入路１５に向かう復路の流れの、調理油の往復の流れが発生する。 The oil tank 11 is formed in a substantially rectangular container shape with an open top surface, and a plurality of undulations 13 projecting downward from the bottom part 12 along the longitudinal direction of the oil tank 11 at the bottom part 12 of the oil tank. It is continuously provided. In the present embodiment, as shown in FIG. 3, the cross-section in the direction intersecting with the longitudinal direction of the oil tank 11 (hereinafter referred to as the width direction) is an inverted normal shape in which the apex of the regular triangle protrudes downward from the bottom 12 of the oil tank. It is a continuous undulation of a triangular shape. The plurality of undulations 13 may be provided continuously along the width direction of the oil tank 11, and the shape of the undulations 13 is an uneven undulation protruding upward or downward from the bottom 12 of the oil tank. If so, in addition to the inverted triangular shape, a waveform, trapezoidal shape, or the like may be used. Moreover, in the range which does not deviate from the objective of this invention, said some uneven | corrugated 13 may be provided only in a part of bottom part 12 of the oil tank, and it continues continuously along the longitudinal direction or the width direction of the oil tank 11. It may not be provided. The bottom 12 of the oil tank may be flat, or may be inclined from the front end in the longitudinal direction of the oil tank 11 so as to gradually become lower toward the introduction path 15 described later. In the case of providing a plurality of undulations 13 at the bottom 12 of the oil tank, in order to increase the contact area when exchanging heat between the cooking oil and the heated heating medium 31 through the bottom 12 of the oil tank, It is desirable to set the area of the bottom 12 of the oil tank having a plurality of undulations 13 to be 1.5 to 3 times, compared to a flat one having no undulations on the bottom 12, and 2 to 3 times It is more desirable to set so that In the present embodiment, the area of the bottom 12 of the oil tank provided with a plurality of undulations 13 is doubled compared to a flat one having no undulations in the bottom 12 of the oil tank.
Further, as shown in FIG. 1, a filtration unit 51 is provided outside the oil tank 11 and at a rear side end (right side in the drawing) in the longitudinal direction. 71 etc. are arranged. And in the rear side edge part of the longitudinal direction of the oil tank 11, the cooking oil filtered by the introduction path 15 for guiding the cooking oil in the oil tank 11 to the filtration part 51 and the filtration part 51 mentioned later is made into the oil tank 11. A discharge portion 16 for discharging is provided so as to cross the longitudinal direction of the oil tank 11. The introduction path 15 and the discharge part 16 are lower than the bottom of the other part of the oil tank 11 and have a groove shape extending in the width direction of the oil tank 11. In the rear end portion in the longitudinal direction of the oil tank 11 in FIG. 1, the discharge portion 16 is disposed on the front side, and the introduction path 15 is disposed on the rear side. A discharge pipe 60 is connected to the center of the bottom of the discharge unit 16. Further, in the oil tank 11, a reflux plate 17 is disposed so as to cover almost all of the plurality of undulations 13 provided on the bottom 12 of the oil tank except for the front end part from above. The reflux plate 17 covers almost all of the plurality of undulations 13 provided on the bottom 12 of the oil tank except the front side end portion, so that the vertical direction of the oil tank 11 is separated from the reflux plate 17 by the upper layer a and the lower layer b. And a relatively large fried rice cake produced during cooking can be prevented from falling on the reflux plate 17 and falling to the bottom 12 of the oil tank. In addition, flanges 18 and 18 are provided at the upper ends of the both side portions 14 and 14 of the oil tank so as to protrude outward and upward with respect to the both side portions 14 and 14 of the oil tank along the both side portions 14 and 14 of the oil tank. In the present embodiment, the introduction path 15, the discharge unit 16, and the filtering unit 51 are provided at the rear side end in the longitudinal direction of the oil tank 11, but each is provided at the center in the longitudinal direction of the oil tank 11 or the front side end. May be.
The cooking oil filled in the oil tank 11 circulates through the oil tank 11 and the filtration unit 51, and as shown in FIGS. 1 to 3, the cooking oil filled in the oil tank 11 is located at the rear end in the longitudinal direction of the oil tank 11. A forward flow from the disposed discharge section 16 to the front end in the longitudinal direction of the oil tank 11 through a plurality of undulations 13 (lower layer b) provided in the bottom section 12 of the oil tank covered with the reflux plate 17; The oil tank 11 is guided from the gap between the front end in the longitudinal direction of the oil tank 11 and the reflux plate 17 to the upper side (upper layer a) of the reflux plate 17, and from the front end in the longitudinal direction of the oil tank 11 A reciprocating flow of cooking oil is generated as a return flow toward the installed introduction path 15.

導入路１５には、送り装置が配設されている。この実施の形態では、送り装置として、導入路１５内の調理油と揚げ滓との双方を濾過部５１へ送ることができるスクリューコンベア５８が用いられており、スクリューコンベヤ５８を回転するための動力源（図示省略）と動力伝達手段（図示省略）とが別途備えられている。上記の送り装置は、スクレーパ付きのネットコンベアなど、他の送り手段に変更することができる。また、調理油は、後述する移送ポンプ６１によって循環させられるものであるため、送り装置を設けずに実施することも可能である。   A feed device is disposed in the introduction path 15. In this embodiment, a screw conveyor 58 that can send both cooking oil and fried rice cake in the introduction path 15 to the filtration unit 51 is used as a feeding device, and power for rotating the screw conveyor 58 is used. A source (not shown) and a power transmission means (not shown) are separately provided. The above feeding device can be changed to other feeding means such as a net conveyor with a scraper. Moreover, since cooking oil is circulated by the transfer pump 61 mentioned later, it is also possible to implement without providing a feeder.

また、油槽１１には、図１に示すように、食材８１を一定時間調理油に浸漬させながら搬送する搬送コンベヤ１９と、調理中の食材の浮き上がりを押さえる押えコンベヤ２０とが配設されている。搬送コンベヤ１９は、油槽の底部１２に配設された還流板１７と油槽１１に満たされた調理油の油面８２との間に、油槽１１の長手方向に沿って配設され、押えコンベヤ２０は調理油の油面８２近くに、搬送コンベヤ１９に沿って上下方向に所定の間隔をおいて配設されている。搬送コンベヤ１９は、油槽１１内に複数台配設して食材８１を搬送してもよい。また、油槽１１の長手方向の後方側端部と押えコンベヤ２０との間に隙間を設け、食材８１を投入する投入部２１を設けている。その他、油槽１１の長手方向の前方側に配設された搬送コンベヤ１９及び押えコンベヤ２０は、その一部が上向きに傾斜しており、搬送コンベヤ１９の前方側端部には調理した食材８１を取り出す取出部２２が設けられている。本実施形態においては、食材８１を油槽１１の長手方向の後方側から前方側へ搬送して揚げ物調理しているが、食材８１を油槽１１の長手方向の前方側から後方側へ搬送してもよい。   In addition, as shown in FIG. 1, the oil tank 11 is provided with a conveyor 19 that conveys the food 81 while immersing the food 81 in cooking oil for a certain period of time, and a presser conveyor 20 that suppresses the lifting of the food during cooking. . The conveyer 19 is disposed along the longitudinal direction of the oil tank 11 between the reflux plate 17 disposed on the bottom 12 of the oil tank and the oil surface 82 of the cooking oil filled in the oil tank 11, and the press conveyor 20. Is disposed near the oil level 82 of the cooking oil along the conveying conveyor 19 at a predetermined interval in the vertical direction. A plurality of transport conveyors 19 may be disposed in the oil tank 11 to transport the food 81. In addition, a gap is provided between the rear end portion in the longitudinal direction of the oil tank 11 and the presser conveyor 20, and a feeding portion 21 for feeding the food 81 is provided. In addition, a part of the conveyor 19 and the presser conveyor 20 disposed on the front side in the longitudinal direction of the oil tank 11 is inclined upward, and the cooked food 81 is placed on the front end of the conveyor 11. An extraction portion 22 is provided. In the present embodiment, the food 81 is conveyed from the rear side in the longitudinal direction of the oil tank 11 to the front side for cooking fried food, but the food 81 may be conveyed from the front side in the longitudinal direction of the oil tank 11 to the rear side. Good.

加熱部３１は油槽１１の下方に配設され、複数の起伏１３を備えた油槽の底部１２を下方から覆うように油槽１１と連設されており、加熱部３１と油槽１１とは、油槽の底部１２を介して区画されている。図３に示すように、本実施形態においては、その底部３２が、油槽の底部１２に備えられた逆正三角形形状の複数の起伏１３の正三角形の頂点と接触しているが、油槽の底部１２と加熱部の底部３２とは接触していなくてもよい。そして、加熱部３１の長手方向の後方側端部（図面右側）には、熱媒体を加熱部３１に流入するための流入部３３が設けられており、加熱部３１の他の部分の底部よりも低く、加熱部３１の長手方向と交わる方向（以下、幅方向とする）に伸びる溝状となっており、その中央には流入管４５が接続されている。また、加熱部３１の長手方向の前方側端部（図面左側）には、加熱部３１から流出させた熱媒体を加熱装置４１へ送り出すための流出部３４が設けられている。流出部３４は、加熱部３１の長手方向において油槽１１よりも前方に設けられ、上方が開放されている。本実施形態においては、その上方には埃等が入らないようツバ３５が設けられている。また、流出部３４における加熱部３１の長手方向の中央には、その底部３２から上方に伸びるように、かつ幅方向に連続した仕切り板３６が設けられており、その仕切り板３６の高さは、加熱部の底部３２から油槽の底部１２までの上下方向の距離、すなわち加熱部３１の高さｈ１よりも高く設定するものとする。流出部３４において、仕切り板３６よりもさらに前方側に位置する底部は、加熱部３１の他の部分の底部よりも低く、加熱部３１の幅方向に伸びる溝状となっており、その中央には流出管４６が接続されている。
熱媒体は、加熱部３１と加熱装置４１とを循環しており、図１〜図２に示すように、加熱部３１内において、加熱部３１の長手方向の後方側端部（図面右側）に配設された流入部３３から加熱部３１の前方側端部に配設された流出部３４に向かって熱媒体の一方向の流れが発生する。本実施形態においては、図３に示すように、加熱部内３１において、油槽の底部１２と加熱部の底部３２とが接触していない部分ｃに熱媒体の流れが発生する。 The heating unit 31 is disposed below the oil tank 11 and is connected to the oil tank 11 so as to cover the bottom 12 of the oil tank having a plurality of undulations 13 from below. The heating unit 31 and the oil tank 11 are It is partitioned through the bottom 12. As shown in FIG. 3, in the present embodiment, the bottom portion 32 is in contact with the apexes of the regular triangles of the plurality of undulations 13 of the inverted equilateral triangle shape provided on the bottom portion 12 of the oil tank. 12 and the bottom 32 of the heating unit may not be in contact with each other. And the inflow part 33 for flowing in a heating medium into the heating part 31 is provided in the rear side edge part (drawing right side) of the heating part 31 from the bottom part of the other part of the heating part 31. And a groove shape extending in a direction intersecting with the longitudinal direction of the heating unit 31 (hereinafter referred to as a width direction), and an inflow pipe 45 is connected to the center thereof. In addition, an outflow portion 34 for sending out the heat medium that has flowed out of the heating unit 31 to the heating device 41 is provided at the front side end (left side in the drawing) of the heating unit 31 in the longitudinal direction. The outflow part 34 is provided in front of the oil tank 11 in the longitudinal direction of the heating part 31, and the upper part is open. In the present embodiment, a flange 35 is provided above the dust so that dust and the like do not enter. Further, a partition plate 36 is provided at the center of the outflow portion 34 in the longitudinal direction of the heating unit 31 so as to extend upward from the bottom 32 and in the width direction. The height of the partition plate 36 is The vertical distance from the bottom 32 of the heating unit to the bottom 12 of the oil tank, that is, the height h1 of the heating unit 31 is set higher. In the outflow part 34, the bottom part located further forward than the partition plate 36 is lower than the bottom part of the other part of the heating part 31, and has a groove shape extending in the width direction of the heating part 31. Is connected to an outflow pipe 46.
The heat medium circulates through the heating unit 31 and the heating device 41, and as shown in FIGS. 1 and 2, the heating unit 31 has a longitudinal end on the rear side (the right side in the drawing) of the heating unit 31. A one-way flow of the heat medium is generated from the arranged inflow portion 33 toward the outflow portion 34 disposed at the front end portion of the heating unit 31. In the present embodiment, as shown in FIG. 3, in the heating section 31, the flow of the heat medium is generated in a portion c where the bottom 12 of the oil tank and the bottom 32 of the heating section are not in contact.

本実施形態においては、加熱部３１内の熱媒体として、熱交換用油を用いるものとする。そして、加熱部３１内の熱交換用油として、油槽１１に満たされる調理油と同様の食用油を用いることが望ましい。熱交換用油に用いられる食用油の種類には特に制限はなく、大豆油、菜種油、オリーブ油、ラード等の揚げ物調理に用いられる種々の食用油を用いることができる。熱交換用油に食用油を用いることによって、熱交換用油が調理油に混入するなどの万が一の場合においても、調理される食材や油（調理油と熱交換用油）を含めたフライヤー１０の安全性を高めることができる。また、熱交換用油として揚げ滓を濾過除去した調理油を再利用することも可能である。   In the present embodiment, heat exchange oil is used as the heat medium in the heating unit 31. And it is desirable to use the cooking oil similar to the cooking oil with which the oil tank 11 is filled as the heat exchange oil in the heating unit 31. There is no restriction | limiting in particular in the kind of edible oil used for oil for heat exchange, Various edible oils used for deep-fried food cooking, such as soybean oil, rapeseed oil, olive oil, lard, can be used. The fryer 10 including the cooking ingredients and oil (cooking oil and heat exchange oil) to be cooked in the unlikely event that the heat exchange oil is mixed into the cooking oil by using the cooking oil as the heat exchange oil Can improve the safety. It is also possible to reuse cooking oil obtained by filtering the fried rice cake as heat exchange oil.

油槽１１や還流板１７、加熱部３１の素材は特に制限されるものではないが、さびにくく手入れがしやすいステンレスを用いることが好ましい。調理油は、調理油自体や食材８１、油槽１１や還流板１７、加熱部３１に含まれる金属によっても劣化が促進されるため、上記の点においてもさびにくい素材を用いることが好ましい。また、油槽１１や加熱部３１の形状や大きさは、本願発明の目的を逸脱しない範囲において、自由に設定することができる。   The materials for the oil tank 11, the reflux plate 17, and the heating unit 31 are not particularly limited, but it is preferable to use stainless steel that is not easily rusted and easy to care for. Since the cooking oil itself is further deteriorated by the cooking oil itself, the food 81, the oil tank 11, the reflux plate 17, and the metal contained in the heating unit 31, it is preferable to use a material that does not easily rust in the above points. Moreover, the shape and magnitude | size of the oil tank 11 or the heating part 31 can be freely set in the range which does not deviate from the objective of this invention.

加熱装置４１は、図１示すようには油槽の底部１２や加熱部の底部３２よりも下方に設けられ、熱源４２と、熱交換器４３と、循環ポンプ４４と、流入管４５と、流出管４６とから構成される。熱源４２と熱交換器４３とは接続され、熱源４２によって熱交換器４３の熱媒体を加熱する。また、流出管４６は、循環ポンプ４４を介して加熱部３１の流出部３４と熱交換器４３とを接続するものであり、流入管４５は熱交換器４３と加熱部３１の流入部３３とを接続するものである。熱源４２は、熱交換器４３の熱媒体を加熱できるものであれば特に制限はなく、電気ヒーターやガスバーナー等を用いることができる。必要に応じて排気煙突（図示省略）を設けてもよい。熱交換器４３は、熱源４２で加熱された熱媒体と、加熱部３１と加熱装置４１とを循環している熱交換用油との間で熱交換を行わせて、熱交換用油を加熱する。熱交換器４３及びその熱媒体の種類には特に制限はなく、種々の食品用の熱交換器及び熱媒体を用いることができる。また、熱交換器４３の他に、電気ヒーターやガスバーナー、ボイラー等を用いて熱交換用油を加熱してもよい。中でもボイラーは稼働コストが高く維持管理が煩わしいが、熱交換用油の劣化を抑えつつ、安全かつ効率良く熱交換用油を加熱することができる。その他、図示は省略するが、熱交換用油の温度を調整するための温度調整装置を備えるものとする。   As shown in FIG. 1, the heating device 41 is provided below the bottom 12 of the oil tank and the bottom 32 of the heating unit, and includes a heat source 42, a heat exchanger 43, a circulation pump 44, an inflow pipe 45, and an outflow pipe. 46. The heat source 42 and the heat exchanger 43 are connected, and the heat medium of the heat exchanger 43 is heated by the heat source 42. The outflow pipe 46 connects the outflow part 34 of the heating unit 31 and the heat exchanger 43 via the circulation pump 44, and the inflow pipe 45 connects the heat exchanger 43 and the inflow part 33 of the heating unit 31. Are connected. The heat source 42 is not particularly limited as long as it can heat the heat medium of the heat exchanger 43, and an electric heater, a gas burner, or the like can be used. An exhaust chimney (not shown) may be provided as necessary. The heat exchanger 43 heats the heat exchange oil by performing heat exchange between the heat medium heated by the heat source 42 and the heat exchange oil circulating in the heating unit 31 and the heating device 41. To do. There is no restriction | limiting in particular in the kind of heat exchanger 43 and its heat medium, The heat exchanger and heat medium for various foodstuffs can be used. In addition to the heat exchanger 43, the heat exchange oil may be heated using an electric heater, a gas burner, a boiler, or the like. Among them, the boiler has a high operating cost and is difficult to maintain, but can heat the heat exchange oil safely and efficiently while suppressing deterioration of the heat exchange oil. In addition, although illustration is abbreviate | omitted, the temperature adjustment apparatus for adjusting the temperature of the oil for heat exchange shall be provided.

本実施形態においては、油槽１１に満たされた調理油と、加熱装置４１で加熱された加熱部３１内の熱交換用油とを、境界壁として油槽の底部１２を介して熱交換させることによって、調理油を加熱するものとする。より詳しくは、図１〜図３に示すように、油槽１１の長手方向の後方側端部に配設された吐出部１６から還流板１７で覆われた油槽の底部１２に備えられた複数の起伏１３（下層ｂ）を通って油槽１１の前方側端部に向かって流れる調理油と、加熱部３１の長手方向の後方側端部に配設された流入部３３から加熱部３１の前方側端部に配設された流出部３４に向かって流れる熱交換用油とを、複数の起伏１３を備えた油槽の底部１２を介して熱交換させることによって、調理油を加熱する。なお、熱交換用油の最低温度は、調理油を食材に応じた目的の調理温度に加熱することができるよう、少なくとも調理油の調理温度と同温度もしくは調理油の調理温度よりも高くなるよう設定するものとし、調理油の劣化を防止する観点から、その最高温度は２４０度以下とする。調理油が目的の調理温度にまで加熱された後には、調理油の温度と熱交換用油の温度とが、ほぼ一定となり、調理中に消費された調理油の熱消費エネルギーは、熱交換用油の加熱エネルギーによって補うように運転することができる。この加熱エネルギーは、熱交換用油の温度やその送り量（加熱部３１及び加熱装置４１の循環量）の増減によって調整することができる。
上記の加熱方式を採用することによって、揚げ滓を含む調理油をガスバーナーや電気ヒーター、熱交換器等の加熱機器で直接加熱しないため、調理油の局部加熱及び局部加熱による揚げ滓の炭化を防止することができる。また、調理油を加熱機器で直接加熱する場合の調理開始時の調理油と加熱機器との温度差と比べて、調理開始時の調理油と熱交換用油との温度差が小さいことから、加熱温度の管理が行いやすい。また、熱交換用油として食用油を用い、食用油同士を油槽の底部１２を介して熱交換させることによって、調理油と熱交換用油との比熱が近いまたは等しいために調理中の両者の温度差を小さく又はゼロとすることができることから、調理温度の管理が行いやすい。さらに、油槽の底部１２に複数の起伏１３を備え、調理油と熱交換用油との接触面積を増やすことによって、調理油と熱交換用油との効率的な熱交換を行うことができることから、調理油を効率よく加熱することができる。その他、油槽の底部１２に備えられた複数の起伏１３を油槽の底部１２から油槽１１の下方に配設された加熱部３１に向けて突出させるとともに還流板１７でその複数の起伏１３のほぼ全てを覆うことによって、油槽１１内に揚げ物調理に必要な調理空間を確保しつつ、調理中に発生した比較的大きな揚げ滓が還流板１７に落下し油槽の底部１２に落下しないため、揚げ滓によって調理油と熱交換用油との熱交換時の油槽の底部１２の熱伝導率を低下させずに調理油と熱交換用油との熱交換を効率的に行うことができる。以上のことから、本願発明に係るフライヤー１０にあっては、調理油の劣化を抑制し、調理油の使用期間を長くすることができる。なお、還流板１７に落下した比較的大きな揚げ滓は調理油の循環による調理油の流れと搬送コンベヤ１９の復路の動きによって導入路１５まで運ばれ、最終的に油槽１１の外へ排出される。 In the present embodiment, the cooking oil filled in the oil tank 11 and the heat exchange oil in the heating unit 31 heated by the heating device 41 are heat-exchanged through the bottom 12 of the oil tank as a boundary wall. , Cooking oil shall be heated. More specifically, as shown in FIG. 1 to FIG. 3, a plurality of oil tanks provided at the bottom part 12 of the oil tank covered with the reflux plate 17 from the discharge part 16 disposed at the rear side end in the longitudinal direction of the oil tank 11. The cooking oil that flows toward the front side end of the oil tank 11 through the undulations 13 (lower layer b) and the front side of the heating unit 31 from the inflow part 33 disposed at the rear side end in the longitudinal direction of the heating unit 31 The cooking oil is heated by exchanging heat with the oil for heat exchange flowing toward the outflow portion 34 disposed at the end through the bottom portion 12 of the oil tank provided with the plurality of undulations 13. It should be noted that the minimum temperature of the heat exchange oil is at least equal to the cooking temperature of the cooking oil or higher than the cooking temperature of the cooking oil so that the cooking oil can be heated to the target cooking temperature according to the ingredients. The maximum temperature is set to 240 degrees or less from the viewpoint of preventing the cooking oil from deteriorating. After the cooking oil is heated to the target cooking temperature, the temperature of the cooking oil and the temperature of the heat exchange oil are almost constant, and the heat consumption energy of the cooking oil consumed during cooking is for heat exchange. It can be operated to be supplemented by the heating energy of the oil. This heating energy can be adjusted by increasing or decreasing the temperature of the heat exchange oil and the feed amount thereof (circulation amount of the heating unit 31 and the heating device 41).
By adopting the above heating method, cooking oil containing fried rice cake is not directly heated by heating equipment such as gas burners, electric heaters, heat exchangers, etc. Can be prevented. In addition, compared to the temperature difference between cooking oil and heating equipment at the start of cooking when cooking oil is directly heated by a heating device, the temperature difference between cooking oil and heat exchange oil at the start of cooking is small, Easy to control the heating temperature. In addition, edible oil is used as the heat exchange oil, and by exchanging heat between the edible oils via the bottom 12 of the oil tank, the specific heat of the cooking oil and the heat exchange oil is close to or equal to each other during cooking. Since the temperature difference can be made small or zero, the cooking temperature can be easily managed. Furthermore, since the bottom part 12 of the oil tank is provided with a plurality of undulations 13 and the contact area between the cooking oil and the heat exchange oil is increased, efficient heat exchange between the cooking oil and the heat exchange oil can be performed. The cooking oil can be heated efficiently. In addition, the plurality of undulations 13 provided on the bottom 12 of the oil tank are projected from the bottom 12 of the oil tank toward the heating unit 31 disposed below the oil tank 11 and almost all of the plurality of undulations 13 are formed by the reflux plate 17. By covering the bowl, while ensuring a cooking space necessary for cooking fried food in the oil tank 11, a relatively large fried rice cake generated during cooking falls on the reflux plate 17 and does not fall on the bottom 12 of the oil tank. Heat exchange between the cooking oil and the heat exchange oil can be performed efficiently without reducing the thermal conductivity of the bottom 12 of the oil tank during the heat exchange between the cooking oil and the heat exchange oil. From the above, in the fryer 10 according to the present invention, the deterioration of the cooking oil can be suppressed and the use period of the cooking oil can be lengthened. The relatively large fried rice cake that has fallen on the reflux plate 17 is transported to the introduction path 15 by the cooking oil flow caused by the circulation of the cooking oil and the return path of the transport conveyor 19, and finally discharged out of the oil tank 11. .

本願発明に係るフライヤー１０の加熱方式と、底部に複数の起伏を有しない底部が平らな油槽（以下、平なべという）の底部をガスバーナーで直接加熱して調理油を加熱する加熱方式において、調理油と加熱方式との関係を比較する。なお、前者と後者の油槽の容量は、ほぼ同量とした。
前者の加熱方式を用いて油槽１１に満たされた調理油の温度を１８０〜１８５℃に加熱する場合は、熱交換用油の温度は少なくとも１８０℃以上とし、望ましくは１８０〜２３０℃に設定すればよく、油槽の底部１２の温度が熱交換用油の温度よりも高くなることはない。一方、後者の加熱方式を用いて平なべに満たされた調理油の温度を１８０〜１８５℃に加熱する場合は、炎の温度が約８００℃のガスバーナーで加熱される平なべの底部の温度（満たされた調理油と接している底部の温度）は２４０〜２６０℃となる。よって、後者の加熱方式を用いた平なべにおいては、調理油が局部加熱され、揚げ滓が炭化するなどの、その局所加熱によって調理油が劣化する恐れがあるほか、均一な揚げ物調理が難しくなる。 In the heating method of heating the frying 10 according to the present invention and the cooking oil by directly heating the bottom of an oil tank having a flat bottom (hereinafter referred to as a flat pan) that does not have a plurality of undulations at the bottom with a gas burner, Compare the relationship between cooking oil and heating method. The capacity of the former and the latter oil tanks was almost the same.
When the temperature of the cooking oil filled in the oil tank 11 is heated to 180 to 185 ° C. using the former heating method, the temperature of the oil for heat exchange should be at least 180 ° C. or higher, and preferably set to 180 to 230 ° C. It suffices that the temperature of the bottom 12 of the oil tank does not become higher than the temperature of the oil for heat exchange. On the other hand, when the temperature of the cooking oil filled in the pan using the latter heating method is heated to 180 to 185 ° C., the temperature of the bottom of the pan heated by a gas burner having a flame temperature of about 800 ° C. The temperature at the bottom in contact with the filled cooking oil is 240-260 ° C. Therefore, in the pan using the latter heating method, cooking oil is locally heated, and the cooking oil may deteriorate due to local heating such as carbonization of the fried rice cake, and uniform fried food cooking becomes difficult. .

濾過部５１は、図４（Ａ）（Ｂ）に示すように、油槽３１に満たされた調理油が導き入れられる上流室５２と、上流室５２の周壁（内壁）に配置され調理油を濾過して調理油と調理中に生じる揚げ滓とを分離する筒状のフィルター７１と、筒状のフィルター７１の内部で回転する回転部材とを備える。この例では、回転部材は、フィルター７１に付着した揚げ滓を掻き落とすスクレーパ７５を兼ねるものとして実施されている。   As shown in FIGS. 4 (A) and 4 (B), the filtering unit 51 is disposed in the upstream chamber 52 into which cooking oil filled in the oil tank 31 is introduced, and the peripheral wall (inner wall) of the upstream chamber 52 to filter the cooking oil. And the cylindrical filter 71 which isolate | separates cooking oil and the deep-fried rice cake which arises during cooking, and the rotating member rotated inside the cylindrical filter 71 are provided. In this example, the rotating member is implemented as a scraper 75 that scrapes off the fried rice cake adhering to the filter 71.

フィルター７１の下方には上流室５２内の揚げ滓を集める集積部５３が配置されており、この集積部５３には揚げ滓を外部に搬出する揚げ滓排出部６２が設けられている。フィルター７１の外周側には環状の下流室５４が設けられている。この下流室５４は、筒状のフィルター７１の外側を取り巻くように環状に形成されたもので、フィルター７１を通過した調理油が、流出する。この下流室５４には導出管５９が接続され、導出管５９は後述する移送ポンプ６１を介して吐出管６０に接続されている。   Below the filter 71, a stacking unit 53 for collecting the deep-fried rice cake in the upstream chamber 52 is disposed, and the collecting unit 53 is provided with a deep-fried rice cake discharging unit 62 for carrying the deep-fried rice cake to the outside. An annular downstream chamber 54 is provided on the outer peripheral side of the filter 71. The downstream chamber 54 is formed in an annular shape so as to surround the outside of the cylindrical filter 71, and cooking oil that has passed through the filter 71 flows out. A lead-out pipe 59 is connected to the downstream chamber 54, and the lead-out pipe 59 is connected to the discharge pipe 60 via a transfer pump 61 described later.

以下、濾過部５１の各部についてより詳しく説明する。
まず、上流室５２は、フィルター７１を備えた筒状の上部と、この上部の下方に設けられた集積部５３とを備える。集積部５３は、下方に向かうに従ってその平面積が減少する略逆円錐形状をしており、調理油中の揚げ滓を下方中央に集まるようにしている。集積部５３は、上流室５２の下部を構成するもので、集積部５３の上端部分は上流室５２の下部の外壁に密閉状態で接続されている。この上流室５２の上端の開口は、フィルター７１の内径と等しいか、これよりも大きいことが望ましいが、これに限らずフィルター７１の内側と導通してフィルター７１内の揚げ滓を受け入れることができるものであればよい。 Hereinafter, each part of the filtration part 51 is demonstrated in detail.
First, the upstream chamber 52 includes a cylindrical upper part provided with a filter 71 and an accumulation part 53 provided below the upper part. The accumulation part 53 has a substantially inverted conical shape in which the flat area decreases as it goes downward, so that the deep-fried rice cakes in the cooking oil are gathered at the lower center. The accumulation part 53 constitutes the lower part of the upstream chamber 52, and the upper end portion of the accumulation part 53 is connected to the outer wall of the lower part of the upstream chamber 52 in a sealed state. The opening at the upper end of the upstream chamber 52 is preferably equal to or larger than the inner diameter of the filter 71, but is not limited thereto, and can be electrically connected to the inside of the filter 71 to receive the fried food in the filter 71. Anything is acceptable.

この集積部５３には導入管５７が接続され、導入管５７は油槽１１の壁を貫通し、前述の導入路１５に接続されている。導入路１５内に配置されたスクリューコンベア５８の終端は、導入管５７内にまで達しており、さらに、集積部５３にまで突出しているものであってもよい。これにより、油槽１１内の調理油と揚げ滓は、導入路１５から導入管５７を経て集積部５３内に運ばれる。   An introduction pipe 57 is connected to the accumulation portion 53, and the introduction pipe 57 passes through the wall of the oil tank 11 and is connected to the introduction path 15 described above. The terminal end of the screw conveyor 58 arranged in the introduction path 15 reaches the inside of the introduction pipe 57 and may further protrude to the accumulation portion 53. Thereby, the cooking oil and the deep-fried rice cake in the oil tank 11 are conveyed from the introduction path 15 through the introduction pipe 57 into the accumulation portion 53.

さらに、この集積部５３には、揚げ滓排出部６２の縦方向コンベヤ６３の始端が接続されている。この縦方向コンベヤ６３は、集積部５３から斜め上方に揚げ滓を運び出すもので、本実施形態では、縦方向コンベヤ６３として、スクリューコンベヤを用いている。また、揚げ滓排出部６２には、縦方向コンベヤ６３を回転するための動力源である縦方向コンベヤモータ（図示省略）と動力伝達手段（図示省略）とを備える。縦方向コンベヤ６３のスクリューは搬送中の揚げ滓を周囲に落とさないよう密閉されている。縦方向コンベヤ６３の上方の終端には、排出シュート６４が設けられ、そこから揚げ滓が排出される。縦方向コンベヤ６３の上方の端部を油槽１１に満たされた調理油の油面８２よりも高く設けることで、揚げ滓のみを油槽１１の内から外に搬出し除去することができる。フィルター７１で分離した揚げ滓を、この揚げ滓排出部６２によって自動かつ連続して油槽１１の外へ除去することで、調理油の劣化を抑制することができる。   Furthermore, the stacking unit 53 is connected to the start end of the vertical conveyor 63 of the fried rice cake discharging unit 62. The vertical conveyor 63 carries the fried rice cake obliquely upward from the stacking unit 53. In the present embodiment, a screw conveyor is used as the vertical conveyor 63. Further, the fried rice cake discharging unit 62 includes a vertical conveyor motor (not shown) that is a power source for rotating the vertical conveyor 63 and a power transmission means (not shown). The screw of the vertical conveyor 63 is sealed so as not to drop the fried rice cake being conveyed around. At the upper end of the vertical conveyor 63, a discharge chute 64 is provided, from which the fried rice cake is discharged. By providing the upper end of the vertical conveyor 63 higher than the oil level 82 of the cooking oil filled in the oil tank 11, only the fried rice cake can be carried out of the oil tank 11 and removed. By removing the deep-fried rice cake separated by the filter 71 from the oil tank 11 automatically and continuously by the deep-fried rice cake discharging unit 62, deterioration of cooking oil can be suppressed.

次に、上流室５２の上部を構成するフィルター７１について説明する。このフィルター７１は、調理油を通過させて、調理油中の揚げ滓を濾し取るものであればよく、濾紙や濾布、各種素材の多孔質体など、その材質や濾過構造は適宜変更して実施することができるが、本実施形態においては、線状部材７２として断面が楔形のステンレス製ウエッジワイヤーで形成されたフィルター７１を用いている。   Next, the filter 71 constituting the upper part of the upstream chamber 52 will be described. The filter 71 may be any filter as long as it allows cooking oil to pass through and filters the fried rice cake in cooking oil. The filter paper, filter cloth, porous material of various materials, etc., and the material and the filtration structure can be appropriately changed. In this embodiment, a filter 71 formed of a wedge-shaped stainless steel wedge wire is used as the linear member 72.

図５に示すように、このフィルター７１は、全体が筒状をなしており、その内周側を上流とし、外周側を下流として調理油が通過し、濾過される。具体的な構造としては、複数の線状部材７２のそれぞれを環状に形成し、環状の軸方向に微小間隔をおいて配列したものである。これらの環状の線状部材７２の配列を複数本の環状の軸方向に伸びるサポートロッド７３により支持し円筒状に形成したもので、軸方向の両端部には環状の支持体７４を装着している。より詳しくは、複数の線状部材７２の配列において、フィルター７１の外周面を構成する線状部材７２の外側を、複数本の上下方向に伸びるサポートロッド７３が支持している。このフィルター７１を用いて調理油と揚げ滓とを分離することにより、濾紙や濾布等の濾過材を用いて揚げ滓を分離する場合に比べ、フィルターの定期交換が不要であるためランニングコストを抑えることができる。   As shown in FIG. 5, the entire filter 71 has a cylindrical shape, and cooking oil passes through the inner peripheral side as the upstream and the outer peripheral side as the downstream, and is filtered. As a specific structure, each of the plurality of linear members 72 is formed in an annular shape, and is arranged with a minute interval in the annular axial direction. An array of these annular linear members 72 is supported by a plurality of annular support rods 73 extending in the axial direction and formed into a cylindrical shape, and annular supports 74 are attached to both ends in the axial direction. Yes. More specifically, in the arrangement of the plurality of linear members 72, a plurality of support rods 73 extending in the vertical direction are supported on the outside of the linear members 72 constituting the outer peripheral surface of the filter 71. Separating cooking oil and fried rice cake using this filter 71 eliminates the need for periodic filter replacement compared to separating fried rice cake using filter media such as filter paper and filter cloth. Can be suppressed.

このウエッジワイヤーの線状部材７２の幅は一定のものであってもよいが、この例では、フィルター７１の内周面を構成する線状部材７２の内側面が最も上下幅が大きく、そこからフィルター７１の径外方向（下流方向）に向かうに従って漸次減少するものを用いている。これによって、複数の線状部材７２の配列により形成される微小間隔ｓが、フィルター７１の内周面から径外方向に向かうに従って大きくなるため、フィルター７１の上流側の開口幅は狭く、下流側の開口幅が広くなり、フィルター７１自体の目詰まりが少なく、調理油と揚げ滓とを効果的に分離し調理油のみを濾過することができる。フィルター７１の内周面（上流側）の開口幅、つまり、複数の線状部材７２の配列によりフィルター７１の内周面に形成される微小間隔Ｓは、揚げ滓よりも小さくなるように設定すれば特に制限はなく、調理油の流れと濾過の完全性のバランスから、望ましくは５〜２００μｍに設定する。本実施形態においては、スリットを略８０μｍに設定した。   The width of the linear member 72 of the wedge wire may be constant, but in this example, the inner surface of the linear member 72 constituting the inner peripheral surface of the filter 71 has the largest vertical width, and from there A filter 71 that gradually decreases in the radial direction (downstream direction) of the filter 71 is used. As a result, the minute interval s formed by the arrangement of the plurality of linear members 72 increases from the inner peripheral surface of the filter 71 toward the radially outward direction, so that the opening width on the upstream side of the filter 71 is narrow and the downstream side , The clogging of the filter 71 itself is small, cooking oil and fried rice cake can be effectively separated, and only cooking oil can be filtered. The opening width of the inner peripheral surface (upstream side) of the filter 71, that is, the minute interval S formed on the inner peripheral surface of the filter 71 by the arrangement of the plurality of linear members 72 is set to be smaller than that of the fried rice cake. If there is no restriction | limiting in particular, from the balance of the flow of cooking oil and the perfection of filtration, it sets to 5-200 micrometers desirably. In the present embodiment, the slit is set to approximately 80 μm.

このフィルター７１は、後述するように油槽１１に満たされた調理油に浸漬されて使用されるものであり、本実施形態のような金属製フィルターのほかに、耐熱性、耐油性及び耐久性を備えた素材、例えば不織布や樹脂製等のフィルターを用いることができる。また、フィルター７１の構造としては、例えば、スパイラル構造等、フィルターの自体に目詰まりがしにくく、フィルターの目詰まりやフィルターに付着した揚げ滓を容易に除去でき、かつフィルターの定期交換が不要なものが望ましい。   As will be described later, this filter 71 is used by being immersed in cooking oil filled in the oil tank 11, and has heat resistance, oil resistance and durability in addition to the metal filter as in the present embodiment. A provided material, for example, a filter made of nonwoven fabric or resin can be used. Further, the filter 71 has a structure such as a spiral structure, which makes it difficult for the filter itself to be clogged, easily removes clogged filter and fried soot adhering to the filter, and does not require periodic replacement of the filter. Things are desirable.

この実施の形態にあっては、フィルター７１は、上流室５２の上部の約下半分に設けられており、上流室５２の上部によって上方から支持されており、上流室５２の上部は、円筒状の壁（内壁）が設けられ、内周側の上流室５２と外周側の下流室５４とを区画しているが、上流室５２の周面全体をフィルター７１によって構成してもよい。また、例えば、半周のみをフィルター７１によって構成したり、複数部分にフィルターを配置したりするなど、上流室５２の一部分のみにフィルター７１を配置してもよい。   In this embodiment, the filter 71 is provided in about the lower half of the upper portion of the upstream chamber 52 and is supported from above by the upper portion of the upstream chamber 52. The upper portion of the upstream chamber 52 is cylindrical. Wall (inner wall) is provided, and the upstream chamber 52 on the inner peripheral side and the downstream chamber 54 on the outer peripheral side are partitioned, but the entire peripheral surface of the upstream chamber 52 may be constituted by the filter 71. In addition, for example, the filter 71 may be disposed only in a part of the upstream chamber 52, such as only a half circumference is configured by the filter 71, or a filter is disposed in a plurality of portions.

次に、上記の回転部材としてのスクレーパ７５について説明する。このスクレーパ７５は、矩形板状体であり、フィルター７１の内周面に当接しつつ、フィルター７１の軸方向に沿って上下方向に伸びている。スクレーパ７５の上部はアーム状の支持部材７６に取り付けられ、支持部材７６は回転軸７７に支持され、回転軸７７は上流室５２の上部に配置された電動機などの回転駆動装置７８の出力軸に接続されている。この例では、スクレーパ７５は２枚設けられているが、１枚であってもよく３枚以上であってもよい。   Next, the scraper 75 as the rotating member will be described. The scraper 75 is a rectangular plate-like body, and extends in the vertical direction along the axial direction of the filter 71 while being in contact with the inner peripheral surface of the filter 71. The upper portion of the scraper 75 is attached to an arm-shaped support member 76, the support member 76 is supported by a rotating shaft 77, and the rotating shaft 77 is used as an output shaft of a rotary drive device 78 such as an electric motor disposed in the upper portion of the upstream chamber 52. It is connected. In this example, two scrapers 75 are provided, but there may be one or three or more.

このスクレーパ７５はその先端とフィルター７１の内周面とをフィルター７１の軸方向に沿って当接させ、スクレーパ７５が回転することで、フィルター７１の内周面に付着した揚げ滓を連続して掻き落とすことができる。スクレーパ７５の先端とフィルター７１の内周面との当接角度αは、９０度未満とされているが、両者が当接しさえすれば特に制限はなく、適宜設定することができる。また、当接角度αを調整可能にしてもよい。さらに、図示は省略するが、スクレーパ７５を軸方向に複数の小スクレーパに分割して形成してもよい。これによって、円筒状のフィルター７１がひずんでも個々の小スクレーパの先端がフィルター７１の内周面に倣い易い。スクレーパ７５は、油槽１１に満たされた調理油に浸漬されて使用されるものであり、耐油性や耐熱性、耐久性を備えた素材であれば特に制限はなく、金属や樹脂等の種々の素材を用いることができる。スクレーパ７５を弾性部材によって付勢し、付勢を受けた状態でフィルター７１の内周面に当接させるようにしてもよい。   The scraper 75 abuts the tip of the scraper 75 and the inner peripheral surface of the filter 71 along the axial direction of the filter 71, and the scraper 75 rotates, so that the frying cake adhering to the inner peripheral surface of the filter 71 continues. Can be scraped off. Although the contact angle α between the tip of the scraper 75 and the inner peripheral surface of the filter 71 is less than 90 degrees, there is no particular limitation as long as the two contact each other, and the contact angle α can be set as appropriate. Further, the contact angle α may be adjustable. Further, although not shown, the scraper 75 may be formed by dividing it into a plurality of small scrapers in the axial direction. Thereby, even if the cylindrical filter 71 is distorted, the tip of each small scraper can easily follow the inner peripheral surface of the filter 71. The scraper 75 is used by being immersed in cooking oil filled in the oil tank 11, and is not particularly limited as long as it is a material having oil resistance, heat resistance, and durability, and various kinds of metals, resins, and the like. Material can be used. The scraper 75 may be urged by an elastic member, and may be brought into contact with the inner peripheral surface of the filter 71 in a state of being urged.

このスクレーパ７５は、フィルター７１を含む上流室５２内で回転することによって、上流室５２内の調理油に旋回流を生じさせる。このために、スクレーパ７５は、半径方向に５mm以上の適当な幅を有するものとしておくことが望ましい。また、旋回流を効率的に発生させるためには、３０〜１００rpmで回転させることが望ましい。３０rpm未満であると、遅すぎて有効な旋回流が生じにくく、１００rpmを越えると早すぎて揚げ滓が暴れ過ぎたりしてしまうおそれがあるが、揚げ滓の大きさや比重や調理油の状態などによって変化するため、装置の全体の状態や種々の実施条件に応じて適宜変更して実施することができる。スクレーパ７５の回転軸７７はフィルター７１の中心軸と同軸上に上下方向に配置することが好ましいが、実質的に同一であればよく数学的な完全同一を求めるものではない。   The scraper 75 rotates in the upstream chamber 52 including the filter 71 to generate a swirling flow in the cooking oil in the upstream chamber 52. For this reason, it is desirable that the scraper 75 has an appropriate width of 5 mm or more in the radial direction. Moreover, in order to generate a swirl flow efficiently, it is desirable to rotate at 30-100 rpm. If it is less than 30 rpm, it is too slow to produce an effective swirl flow, and if it exceeds 100 rpm, the fried rice cake may be too violent, but the size and specific gravity of the fried rice cake, the state of cooking oil, etc. Therefore, it can be implemented with appropriate changes according to the overall state of the apparatus and various implementation conditions. The rotation shaft 77 of the scraper 75 is preferably arranged on the same axis as the central axis of the filter 71 in the vertical direction. However, the rotation shaft 77 is not necessarily required to be mathematically identical as long as it is substantially the same.

この旋回流を発生させる機構と、上記のスクレーパ７５とを別々の部材によって構成することも可能である。例えば、スクレーパとしては機能しないプロペラ状の攪拌羽根を回転させて旋回流を発生させるようにしてもよい。また、導入管５７による、フィルター７１を含む上流室５２内への調理油の導入方向を、筒状のフィルター７１の接線方向とすることによって、導入時の調理油の流れによって旋回流を発生させるようにしてもよい。   It is also possible to configure the mechanism for generating the swirling flow and the scraper 75 by separate members. For example, a swirling flow may be generated by rotating a propeller-like stirring blade that does not function as a scraper. In addition, by making the introduction direction of the cooking oil into the upstream chamber 52 including the filter 71 by the introduction pipe 57 the tangential direction of the cylindrical filter 71, a swirling flow is generated by the flow of the cooking oil at the time of introduction. You may do it.

このように、フィルター７１内部で旋回流を発生させることによって、フィルター７１に付着してスクレーパ７５によって落とされた揚げ滓が、旋回流の流れの中心に集まりつつ下方に沈む。そして、下方の集積部５３に沈んだ揚げ滓は、前述の揚げ滓排出部６２によって系外に排出される。特に、フィルター７１の内周面に接触しながらこれに沿ってスクレーパ７５が回転することにより、上記旋回流を発生させると共にフィルター７１に付着した揚げ滓をフィルター７１の内周面から離れさせて旋回流に乗せて渦の中心から下方に沈降させることができる。   In this way, by generating a swirling flow inside the filter 71, the fried rice cake attached to the filter 71 and dropped by the scraper 75 sinks downward while gathering at the center of the swirling flow. The deep-fried rice cake that has sunk in the lower accumulation portion 53 is discharged out of the system by the deep-fried rice cake discharging portion 62 described above. In particular, when the scraper 75 rotates along the inner peripheral surface of the filter 71 while rotating, the swirl flow is generated, and the fried rice cake attached to the filter 71 is separated from the inner peripheral surface of the filter 71 and swirled. It is possible to settle down from the center of the vortex in the flow.

次に、下流室５４について説明する。この下流室５４は、フィルター７１の外周に間隔を置いて設けられた外壁と、フィルター７１及び上流室５２の内壁との間に形成された空間であり濾過済の調理油が一時的に溜められている。この下流室５４は環状をなしており、その上端は蓋体５５によって下端は底部５６によって、それぞれ閉じられている。前述のようにこの下流室５４（この例では底部５６）には導出管５９が接続されており、導出管５９からの調理油が移送ポンプ６１によって油槽１１に戻されて循環させられる。   Next, the downstream chamber 54 will be described. The downstream chamber 54 is a space formed between an outer wall provided on the outer periphery of the filter 71 at an interval and an inner wall of the filter 71 and the upstream chamber 52, and filtered cooking oil is temporarily stored therein. ing. The downstream chamber 54 has an annular shape, and its upper end is closed by a lid 55 and its lower end is closed by a bottom 56. As described above, the outlet pipe 59 is connected to the downstream chamber 54 (the bottom 56 in this example), and cooking oil from the outlet pipe 59 is returned to the oil tank 11 by the transfer pump 61 and circulated.

なお、上流室５２及び下流室５４の高さは、油槽１１に満たされた調理油の油面８２よりも高く設定されており、その上方には空気抜き（図示せず）が設けられている。フィルター７１は、油面８２よりも低い位置に配置されている。上流室５２及び下流室５４は、空気抜きなどで開放することにより、真空状態とならないようにし、適度な吸引力を保つ。これにより、移送ポンプ６１により調理油を吸引する際に、細かな揚げ滓がフィルター７１を通過しないようにした。   In addition, the height of the upstream chamber 52 and the downstream chamber 54 is set higher than the oil level 82 of the cooking oil with which the oil tank 11 was filled, and the air vent (not shown) is provided above it. The filter 71 is disposed at a position lower than the oil level 82. The upstream chamber 52 and the downstream chamber 54 are opened by venting or the like so as not to be in a vacuum state and maintain an appropriate suction force. Thus, when the cooking oil is sucked by the transfer pump 61, the fine fried rice cake is prevented from passing through the filter 71.

また、導出管５９は、移送ポンプ６１を介して、吐出管６０と接続されている。濾過部５１によって濾過された調理油が、吐出管６０から油槽１１に戻されることになる。   Further, the outlet pipe 59 is connected to the discharge pipe 60 via the transfer pump 61. The cooking oil filtered by the filtering unit 51 is returned from the discharge pipe 60 to the oil tank 11.

前述のように、調理油は、移送ポンプ６１によって、油槽１１の長手方向を横切るように設けられた導入路１５から吸引され、濾過部５１のフィルター７１によって濾過され、濾過された調理油が油槽１１の後方側端部に設けられた吐出部１６から吐出して、油槽１１の下層ｂにおいては後方側から前方側へ、その後油槽１１の上層ａにおいては前方側から後方側へと油槽１１を往復して油槽１１と濾過部５１とを循環するものであり、調理油の流れは油槽１１の全幅に渡って発生する。この調理油の送り量としては、調理油と熱交換用油との熱交換によって調理油を適切な調理温度に加熱でき、かつ、搬送コンベヤ１９で搬送する食材８１が逆流しない程度の流量であれば特に制限はなく、本実施形態においては、調理油が油槽１１及び濾過部５１を循環する際の調理油の１回あたりの循環量を送り量とすると、その送り量は、後述する熱交換用油が加熱部３１及び加熱装置４１を循環する際の熱交換用油の１回または複数回の循環量と同じになるよう設定するものとする。そして、調理油の送り量は、吐出管６０に設けられたバルブ（図示省略）で調整している。   As described above, the cooking oil is sucked from the introduction path 15 provided across the longitudinal direction of the oil tank 11 by the transfer pump 61, filtered by the filter 71 of the filtering unit 51, and the filtered cooking oil is oil tank The oil tank 11 is discharged from the discharge section 16 provided at the rear end of the oil tank 11, and the oil tank 11 is moved from the rear side to the front side in the lower layer b of the oil tank 11, and thereafter from the front side to the rear side in the upper layer a of the oil tank 11. The oil tank 11 and the filter 51 are circulated back and forth, and the cooking oil flow is generated over the entire width of the oil tank 11. The feeding amount of the cooking oil may be such that the cooking oil can be heated to an appropriate cooking temperature by heat exchange between the cooking oil and the heat exchanging oil, and that the food material 81 transported by the transport conveyor 19 does not flow backward. If the cooking oil circulates through the oil tank 11 and the filtering unit 51 and the amount of cooking oil circulated once is the feed amount, the feed amount is the heat exchange described later. It shall be set so that the amount of oil used may be the same as the circulation amount of heat exchange oil one or more times when circulating through the heating unit 31 and the heating device 41. The amount of cooking oil fed is adjusted by a valve (not shown) provided in the discharge pipe 60.

また、熱交換用油は、循環ポンプ４４によって、加熱部３１の長手方向を横切るように設けられた流出部３４から吸引され、熱交換器４３によって加熱され、加熱された熱交換用油が加熱部３１の後方側端部に設けられた流入部３３から吐出して加熱部３１と加熱装置４１とを循環するものであり、熱交換用油の流れは加熱部３１の全幅に渡って発生する。その際、流出部３４の上方が開放されていることによって熱交換用油が膨張するのを防ぐことができ、また、仕切り板３６の高さを加熱部３１の高さｈ１よりも高くすることによって、熱交換用油を一度仕切り板３６でオーバーフローさせたのち循環ポンプ４４によって吸引させることで、循環させる熱交換用油を脱気することができる。この熱交換用油の送り量としては、調理油と熱交換用油との熱交換によって調理油を適切な調理温度に加熱できる程度の流量であれば特に制限はなく、本実施形態においては、熱交換用油の１回または複数回の循環量を送り量とすると、その送り量は調理油の送り量（調理油の１回あたりの循環量）とを同じになるよう設定するものとし、かつ０．５〜３分間に１回熱交換用油が加熱部３１及び加熱装置４１を循環する程度とする。例えば、容量Ｘ［Ｌ］の油槽１１に対し調理油をＸ／２［Ｌ／ｍｉｎ］の流速で調理油を循環させた場合、容量Ｘ／４［Ｌ］の加熱部３１に対し熱交換用油をＸ／２［Ｌ／ｍｉｎ］の流速で２回循環させると、調理油の循環量と熱交換用油の循環量とが同じとなる。そして、熱交換用油の送り量は流入管４５に設けられたバルブ（図示省略）で調整している。   The heat exchange oil is sucked from the outflow part 34 provided across the longitudinal direction of the heating part 31 by the circulation pump 44, heated by the heat exchanger 43, and the heated heat exchange oil is heated. It discharges from the inflow part 33 provided in the rear side edge part of the part 31, and circulates through the heating part 31 and the heating device 41, and the flow of the heat exchange oil is generated over the entire width of the heating part 31. . At that time, the heat exchanger oil can be prevented from expanding by opening the upper part of the outflow part 34, and the height of the partition plate 36 is made higher than the height h1 of the heating part 31. Thus, after the heat exchange oil is once overflowed by the partition plate 36 and then sucked by the circulation pump 44, the heat exchange oil to be circulated can be deaerated. The feed amount of the heat exchange oil is not particularly limited as long as the flow rate is such that the cooking oil can be heated to an appropriate cooking temperature by heat exchange between the cooking oil and the heat exchange oil. Assuming that the amount of circulation of heat exchange oil one or more times is the feed amount, the feed amount shall be set to be the same as the feed amount of cooking oil (circulation amount per cooking oil), And it is set as the grade which the oil for heat exchange circulates through the heating part 31 and the heating apparatus 41 once for 0.5 to 3 minutes. For example, when cooking oil is circulated at a flow rate of X / 2 [L / min] to the oil tank 11 of capacity X [L], heat is exchanged to the heating unit 31 of capacity X / 4 [L]. When the oil is circulated twice at a flow rate of X / 2 [L / min], the circulation amount of the cooking oil and the circulation amount of the heat exchange oil are the same. The feed amount of the heat exchange oil is adjusted by a valve (not shown) provided in the inflow pipe 45.

調理中に発生した揚げ滓は、調理油の循環による調理油の流れと搬送コンベヤ１９の復路の動き、導入路１５に配置された送り装置とによって油槽１１から濾過部５１へ送られる。そして、濾過部５１で、揚げ滓を含んだ調理油がフィルター７１を通過することによって、調理油と揚げ滓とが分離される。フィルター７１で濾過された調理油は、上述の通り、油槽１１と濾過部５１とを循環する。濾過部５１で、分離された揚げ滓は、揚げ滓排出部６２により油槽１１から外へ搬出される。   Fried rice cake generated during cooking is sent from the oil tank 11 to the filtration unit 51 by the flow of cooking oil due to the circulation of cooking oil, the movement of the return path of the transport conveyor 19, and the feeding device arranged in the introduction path 15. And the cooking oil and the deep-fried rice cake are isolate | separated when the cooking oil containing the deep-fried rice cake passes the filter 71 by the filtration part 51. FIG. The cooking oil filtered by the filter 71 circulates through the oil tank 11 and the filtering unit 51 as described above. The deep-fried rice cake separated by the filtration unit 51 is carried out of the oil tank 11 by the deep-fried rice cake discharging unit 62.

次に、本願発明に係るフライヤー１０の第２実施形態について説明する。加熱部９１の一部として油槽１１内に複数のヒートパイプ９２…９２を配設し、その複数のヒートパイプ９２…９２内の熱交換用油と油槽１１内の調理油とを複数のヒートパイプの外周壁9９３…９３を介して熱交換させることを除いては、上述した第１実施形態と同じ構成である。よって、同じ部材には同じ番号を付すことにより、詳細な説明は省略する。また、第２実施形態においては、濾過部５１について、図示を省略する。   Next, a second embodiment of the flyer 10 according to the present invention will be described. A plurality of heat pipes 92... 92 are disposed in the oil tank 11 as a part of the heating unit 91, and the heat exchange oil in the plurality of heat pipes 92. The configuration is the same as that of the first embodiment described above except that heat exchange is performed through the outer peripheral walls 993. Therefore, detailed description is abbreviate | omitted by attaching | subjecting the same number to the same member. In the second embodiment, the illustration of the filtering unit 51 is omitted.

油槽１１は、図６〜図７に示すように、上面を開口した平面視略矩形の容器形状に形成され、油槽の底部１２は起伏を有しない平らな構造となっている。また、図６〜図７には示していないが、油槽１１の外側であって、その長手方向の後方側端部（図面右側）には、図２〜図５に示す濾過部５１が設けられている。そして、油槽１１の長手方向の後方側端部には、油槽１１内の調理油を濾過部５１に導くための導入路１５が、油槽１１の長手方向を横切るように、油槽１１の幅方向に伸びる溝状に設けられている。油槽１１の長手方向において、この導入路１５と後述する油槽１１内に備えられる複数のヒートパイプ９２…９２の後方側端部との間の油槽の底部１２の中央には、吐出管６０が接続されている。また、油槽１１内において、後述する油槽１１内に備えられる複数のヒートパイプ９２…９２の、前方側端部を除くほぼ全てを上方から覆うように還流板１７が配設されている。還流板１７が複数のヒートパイプ９２…９２のほぼ全てを上方から覆うことによって、油槽１１の上下方向を、還流板１７を隔てて上層ｄと下層ｅとの２層に分けることができるほか、調理中に生じる比較的大きな揚げ滓が還流板１７に落下し複数のヒートパイプ９２…９２と接触することを防ぐことができる。
油槽１１に満たされた調理油は、この油槽１１と濾過部５１とを循環しており、図６〜図７に示すように、油槽１１内において、油槽１１の長手方向の後方側端部に接続された吐出管６０から調理油が吐出され、還流板１７で覆われた下層ｅを通って油槽１１の長手方向の前方側端部に向かう往路の流れと、油槽１１の長手方向の前方側端部と還流板１７の隙間から還流板１７の上方に位置する上層ｄに導かれ、油槽１１の長手方向の前方側端部から油槽１１の後方側端部に配設された導入路１５に向かう復路の流れの、調理油の往復の流れが発生する。 As shown in FIGS. 6 to 7, the oil tank 11 is formed in a substantially rectangular container shape in plan view with an upper surface opened, and the bottom 12 of the oil tank has a flat structure without undulations. Moreover, although not shown in FIGS. 6-7, it is the outer side of the oil tank 11, Comprising: The filtration part 51 shown in FIGS. 2-5 is provided in the rear side edge part (right side of drawing) of the longitudinal direction. ing. And the introduction path 15 for guiding the cooking oil in the oil tank 11 to the filtration part 51 is arranged in the width direction of the oil tank 11 so that the cooking oil in the oil tank 11 crosses the longitudinal direction of the oil tank 11. It is provided in an extending groove shape. In the longitudinal direction of the oil tank 11, a discharge pipe 60 is connected to the center of the bottom part 12 of the oil tank between the introduction path 15 and rear end portions of a plurality of heat pipes 92... 92 provided in the oil tank 11 described later. Has been. Further, in the oil tank 11, a reflux plate 17 is disposed so as to cover almost all of the plurality of heat pipes 92... 92 provided in the oil tank 11, which will be described later, except for the front end portion from above. The reflux plate 17 covers almost all of the plurality of heat pipes 92... 92 from above, so that the vertical direction of the oil tank 11 can be divided into two layers of an upper layer d and a lower layer e with the reflux plate 17 interposed therebetween. It is possible to prevent a relatively large deep-fried rice cake produced during cooking from falling on the reflux plate 17 and coming into contact with the plurality of heat pipes 92.
The cooking oil filled in the oil tank 11 circulates through the oil tank 11 and the filtration unit 51, and as shown in FIGS. 6 to 7, in the oil tank 11, the cooking oil filled in the oil tank 11 at the rear side end in the longitudinal direction. The cooking oil is discharged from the connected discharge pipe 60, passes through the lower layer e covered with the reflux plate 17, the forward flow toward the front end in the longitudinal direction of the oil tank 11, and the front side in the longitudinal direction of the oil tank 11. From the gap between the end portion and the reflux plate 17 to the upper layer d positioned above the reflux plate 17, the front end in the longitudinal direction of the oil tank 11 leads to the introduction path 15 disposed at the rear end of the oil tank 11. A reciprocating flow of cooking oil is generated in the direction of the return path.

加熱部９１には複数のヒートパイプ９２…９２を備え、それら複数のヒートパイプ９２…９２は油槽１１内、より詳しくは油槽１１の上下方向においては下方に配設され、油槽１１に満たされた調理油に浸漬されている。よって、加熱部９１と油槽１１とは、複数のヒートパイプの外周壁９３…９３を介して区画されている。本実施形態においては、断面視円形状の７本のヒートパイプ９２…９２が、図６〜図７に示すように、油槽１１内において油槽１１の長手方向に沿って、かつそれぞれが平面視にて油槽１１の幅方向に若干の隙間をおいて敷き詰められるように配設され、複数のヒートパイプ９２…９２の上方は、上述のように還流板１７で覆われている。また、複数のヒートパイプ９２…９２の後方側端部（図面右側）はそれぞれ下方に折り曲げられ、折り曲げられた複数のヒートパイプ９２…９２の後方側端部の終端は油槽の底部１２を突き抜け、油槽１１の下方に配設されたヘッダー９７と接続されている。ヘッダー９７は、加熱装置４１の流入管４５とも接続されている。一方、複数のヒートパイプ９２…９２の前方側端部は、油槽１１の前方側に配設された流出部９４に接続されている。上記の複数のヒートパイプ９２…９２は、油槽１１内において油槽１１の幅方向に沿って設けられていてもよく、その断面形状は、円形に限定されず、矩形や多角形、楕円等であってもよい。また、複数のヒートパイプの外周壁９３…９３に複数の溝を設けるなど起伏を有してもよく、その形状は、直管ではなく蛇行していてもよい。なお、調理油と加熱された加熱部３１内の熱交換用油とを複数のヒートパイプの外周壁９３…９３を介して熱交換させる際の接触面積を増やすために、複数のヒートパイプの外周壁９３…９３の総面積は、油槽の底部１２と比較して、１．５〜４倍となるように設定することが望ましく、２〜４倍となるように設定することがより望ましい。また、継手を介して複数本のヒートパイプをつなげたものを１本のヒートパイプ９２として用いてもよい。さらに、本実施形態においては、上述の通り、複数のヒートパイプ９２…９２を油槽１１内の全体に配設しているが、複数のヒートパイプ９２…９２は、本願発明の目的を逸脱しない範囲において、油槽１１内の一部にのみ配設されていてもよい。
また、油槽の１１の前方には、複数のヒートパイプ９２…９２から流出する熱交換用油を加熱装置４１へ送り出すための流出部９４が設けられている。流出部９４は、油槽１１の前方側端部と連設されており、上方が開放されている。本実施形態においては、その上方には埃等が入らないようツバ９５が設けられている。また、流出部９４の長手方向の中央には、その底部から上方に伸びるように、かつ幅方向に連続した仕切り板９６が設けられており、その仕切り板９６の高さは、油槽１１内に配設される複数のヒートパイプ９２…９２の、油槽１１の上下方向における高さｈ２よりも高く設定するものとする。また、流出部９４において、仕切り板９６よりもさらに前方側に位置する底部の中央には流出管４６が接続されている。
熱交換用油は、加熱部９１と加熱装置４１とを循環しており、図６〜図７に示すように、加熱部９１内において、複数のヒートパイプ９２…９２の長手方向の後方側端部に配設されたヘッダー９７から複数のヒートパイプ９２…９２内を通って油槽１１の前方側端部に連設された流出部３４に向かって熱交換用油の一方向の流れが発生する。 The heating unit 91 includes a plurality of heat pipes 92... 92, and the plurality of heat pipes 92... 92 are disposed in the oil tank 11, more specifically, below in the vertical direction of the oil tank 11. Soaked in cooking oil. Therefore, the heating part 91 and the oil tank 11 are partitioned via the outer peripheral walls 93 ... 93 of a plurality of heat pipes. In the present embodiment, the seven heat pipes 92... 92 having a circular shape in cross section are arranged in the oil tank 11 along the longitudinal direction of the oil tank 11 and each in plan view as shown in FIGS. Thus, the oil tank 11 is arranged so as to be spread with a slight gap in the width direction, and the upper part of the plurality of heat pipes 92... 92 is covered with the reflux plate 17 as described above. Further, the rear end portions (the right side of the drawing) of the plurality of heat pipes 92... 92 are bent downward, and the ends of the rear end portions of the plurality of bent heat pipes 92... 92 penetrate the bottom portion 12 of the oil tank, A header 97 disposed below the oil tank 11 is connected. The header 97 is also connected to the inflow pipe 45 of the heating device 41. On the other hand, front end portions of the plurality of heat pipes 92... 92 are connected to an outflow portion 94 disposed on the front side of the oil tank 11. The plurality of heat pipes 92 ... 92 may be provided in the oil tank 11 along the width direction of the oil tank 11, and the cross-sectional shape thereof is not limited to a circle, but may be a rectangle, a polygon, an ellipse, or the like. May be. Moreover, you may have undulations, such as providing a some groove | channel in the outer peripheral wall 93 ... 93 of several heat pipes, and the shape may meander instead of a straight pipe. In addition, in order to increase the contact area when heat-exchanging cooking oil and the oil for heat exchange in the heating part 31 through the outer peripheral wall 93 ... 93 of several heat pipes, the outer periphery of several heat pipes The total area of the walls 93... 93 is preferably set to be 1.5 to 4 times, and more preferably 2 to 4 times that of the bottom 12 of the oil tank. In addition, a structure in which a plurality of heat pipes are connected via a joint may be used as one heat pipe 92. Further, in the present embodiment, as described above, the plurality of heat pipes 92... 92 are disposed in the entire oil tank 11, but the plurality of heat pipes 92... 92 does not depart from the object of the present invention. In this case, it may be disposed only in a part of the oil tank 11.
Further, an outflow portion 94 for sending heat exchange oil flowing out from the plurality of heat pipes 92... 92 to the heating device 41 is provided in front of the oil tank 11. The outflow part 94 is connected to the front side end part of the oil tank 11, and the upper part is open. In the present embodiment, a brim 95 is provided above the dust so that dust and the like do not enter. Further, a partition plate 96 extending in the width direction and extending in the width direction is provided at the center of the outflow portion 94 in the longitudinal direction, and the height of the partition plate 96 is set in the oil tank 11. It is assumed that the plurality of heat pipes 92... 92 disposed are set to be higher than the height h2 in the vertical direction of the oil tank 11. Further, in the outflow portion 94, an outflow pipe 46 is connected to the center of the bottom located further forward than the partition plate 96.
The heat exchanging oil circulates through the heating unit 91 and the heating device 41, and as shown in FIGS. 6 to 7, the longitudinal ends of the plurality of heat pipes 92... 92 in the heating unit 91. A one-way flow of heat exchange oil is generated from the header 97 disposed in the section through the plurality of heat pipes 92... 92 toward the outflow section 34 connected to the front end of the oil tank 11. .

本実施形態においては、油槽１１に満たされた調理油と、加熱装置４１で加熱された加熱部９１内の熱交換用油とを、境界壁として複数のヒートパイプの外周壁９３…９３を介して熱交換させることによって、調理油を加熱するものとする。より詳しくは、図６〜図７に示すように、油槽１１の長手方向の後方側端部に配設された吐出管６０から還流板１７で覆われた下層ｅを通って油槽１１の前方側端部に向かって流れる調理油と、複数のヒートパイプ９２…９２の長手方向の後方側端部に配設されたヘッダー９７から複数のヒートパイプ９２…９２内を通って油槽１１の前方側端部に連設された流出部９４に向かって流れる熱交換用油とを、複数のヒートパイプの外周壁９３…９３を介して熱交換させることによって、調理油を加熱する。なお、熱交換用油の最低／最高温度の設定については本願の第１実施形態と同様とし、また、調理油が目的の調理温度にまで加熱された後の、調理油や熱交換用油の温度調整についても、本願の第１実施形態と同様とする。
上記の加熱方式を採用することによって、本願の第１実施形態と同様、揚げ滓を含む調理油をガスバーナーや電気ヒーター、熱交換器等の加熱機器で直接加熱しないため、調理油の局部加熱及び局部加熱による揚げ滓の炭化を防止することができる。また、調理油を加熱機器で直接加熱する場合の調理開始時の調理油と加熱機器との温度差と比べて、調理開始時の調理油と熱交換用油との温度差が小さいことから、加熱温度の管理が行いやすい。また、熱交換用油として食用油を用い、食用油同士を油槽１１内に備えられた複数のヒートパイプの外周壁９３…９３を介して熱交換させることによって、調理油と熱交換用油との比熱が近いまたは等しいために調理中の両者の温度差を小さく又はゼロとすることができることから、調理温度の管理が行いやすい。さらに、調理油と熱交換用油とを油槽１１内に備えられた複数のヒートパイプの外周壁９３…９３を介して熱交換させ、調理油と熱交換用油との接触面積を増やすことによって、調理油と熱交換用油との効率的な熱交換を行うことができることから、調理油を効率よく加熱することができる。
本願の第１実施形態においては、複数の起伏１３を備えた油槽の底部１２を境界壁とすることによって調理油と熱交換用油との接触面積を増やしたが、本願の第２実施形態においては、加熱部９１の一部として油槽１１内に複数のヒートパイプ９２…９２を備え、それら複数のヒートパイプの外周壁９３…９３を境界壁とすることによって調理油と熱交換用油との接触面積を増やしている。第１実施形態においては、上述の通り、底部１２に起伏を有しないフラットなものと比較して、複数の起伏１３を備えた油槽の底部１２の面積が２倍となったが、第２実施形態においては、複数のヒートパイプ９２…９２を油槽１１の幅方向において隙間なく敷き詰めるように配設した場合には、その外周壁９３…９３の総面積は、理論上は油槽の底部１２の面積の３．１４倍となり、第１実施形態と比較してより効率的に調理油を加熱することができる。しかしながら、本願の第２実施形態においては、第１実施形態の構成と比較して、複数のヒートパイプ９２…９２を油槽１１内に配設することによって油槽１１内における調理空間が狭くなるため、油槽１１内に適切な調理空間を確保できるよう、油槽１１の大きさを設定することが望ましい。
その他、複数のヒートパイプ９２…９２の上方を還流板１７でほぼ全てを覆うことによって、調理中に発生した比較的大きな揚げ滓が還流板１７に落下し油槽の底部１２に落下しないため、揚げ滓によって調理油と熱交換用油との熱交換時の複数のヒートパイプの外周壁９３…９３の熱伝導率を低下させずに調理油と熱交換用油との熱交換を効率的に行うことができる。
以上のことから、本願発明に係るフライヤー１０にあっては、調理油の劣化を抑制し、調理油の使用期間を長くすることができる。なお、還流板１７に落下した比較的大きな揚げ滓は調理油の循環による調理油の流れと搬送コンベヤ１９の復路の動きによって導入路１５まで運ばれ、最終的に油槽１１の外へ排出される。 In the present embodiment, cooking oil filled in the oil tank 11 and heat exchange oil in the heating unit 91 heated by the heating device 41 are used as boundary walls via the outer peripheral walls 93... 93 of a plurality of heat pipes. The cooking oil shall be heated by heat exchange. More specifically, as shown in FIGS. 6 to 7, the front side of the oil tank 11 passes through the lower layer e covered with the reflux plate 17 from the discharge pipe 60 arranged at the rear side end in the longitudinal direction of the oil tank 11. The cooking oil flowing toward the end and the front end of the oil tank 11 through the plurality of heat pipes 92... 92 from the header 97 disposed at the rear end in the longitudinal direction of the plurality of heat pipes 92. The cooking oil is heated by exchanging heat with the oil for heat exchange flowing toward the outflow part 94 connected to the part through the outer peripheral walls 93... 93 of the plurality of heat pipes. The setting of the minimum / maximum temperature of the heat exchange oil is the same as that of the first embodiment of the present application, and the cooking oil and the heat exchange oil after the cooking oil is heated to the target cooking temperature. The temperature adjustment is also the same as in the first embodiment of the present application.
By adopting the above heating method, as in the first embodiment of the present application, cooking oil including deep frying is not directly heated by a heating device such as a gas burner, an electric heater, or a heat exchanger. And carbonization of the deep-fried rice cake by local heating can be prevented. In addition, compared to the temperature difference between cooking oil and heating equipment at the start of cooking when cooking oil is directly heated by a heating device, the temperature difference between cooking oil and heat exchange oil at the start of cooking is small, Easy to control the heating temperature. Moreover, cooking oil and heat exchange oil are obtained by using edible oil as heat exchange oil, and exchanging heat between the edible oils through the outer peripheral walls 93 ... 93 of a plurality of heat pipes provided in the oil tank 11. Since the specific heat is close or equal, the temperature difference between the two during cooking can be made small or zero, so that the cooking temperature can be easily managed. Furthermore, the cooking oil and the heat exchanging oil are heat exchanged through the outer peripheral walls 93 ... 93 of the plurality of heat pipes provided in the oil tank 11, thereby increasing the contact area between the cooking oil and the heat exchanging oil. Since the efficient heat exchange between the cooking oil and the heat exchange oil can be performed, the cooking oil can be efficiently heated.
In 1st Embodiment of this application, although the contact area of cooking oil and oil for heat exchange was increased by making the bottom part 12 of the oil tank provided with several undulations 13 into a boundary wall, in 2nd Embodiment of this application Is provided with a plurality of heat pipes 92... 92 in the oil tank 11 as a part of the heating unit 91, and the outer peripheral walls 93... The contact area is increased. In the first embodiment, as described above, the area of the bottom 12 of the oil tank provided with a plurality of undulations 13 is doubled as compared with a flat one having no undulations in the bottom 12, but the second embodiment In the embodiment, when a plurality of heat pipes 92... 92 are arranged without gaps in the width direction of the oil tank 11, the total area of the outer peripheral walls 93... 93 is theoretically the area of the bottom 12 of the oil tank. The cooking oil can be heated more efficiently than the first embodiment. However, in the second embodiment of the present application, as compared to the configuration of the first embodiment, the cooking space in the oil tank 11 becomes narrower by disposing a plurality of heat pipes 92 ... 92 in the oil tank 11, It is desirable to set the size of the oil tank 11 so that an appropriate cooking space can be secured in the oil tank 11.
In addition, since the upper part of the plurality of heat pipes 92... 92 is almost entirely covered with the reflux plate 17, the relatively large fried rice cake generated during cooking falls on the reflux plate 17 and does not fall on the bottom 12 of the oil tank. The heat exchange between the cooking oil and the heat exchange oil is efficiently performed without reducing the thermal conductivity of the outer peripheral walls 93 ... 93 of the plurality of heat pipes at the time of heat exchange between the cooking oil and the heat exchange oil. be able to.
From the above, in the fryer 10 according to the present invention, the deterioration of the cooking oil can be suppressed and the use period of the cooking oil can be lengthened. The relatively large fried rice cake that has fallen on the reflux plate 17 is transported to the introduction path 15 by the cooking oil flow caused by the circulation of the cooking oil and the return path of the transport conveyor 19, and finally discharged out of the oil tank 11. .

調理油は、移送ポンプ６１によって、油槽１１の長手方向を横切るように設けられた導入路１５から吸引され、濾過部５１のフィルター７１によって濾過され、濾過された調理油が油槽１１の後方側端部に設けられた吐出管６０から吐出して、油槽１１の下層ｅにおいては後方側から前方側へ、その後油槽１１の上層ｄにおいては前方側から後方側へと油槽１１を往復して油槽１１と濾過部５１とを循環するものであり、調理油の流れは油槽１１の全幅に渡って発生する。この調理油の送り量としては、調理油と熱交換用油との熱交換によって調理油を適切な調理温度に加熱でき、かつ、搬送コンベヤ１９で搬送する食材８１が逆流しない程度の流量であれば特に制限はなく、本実施形態においても、第１実施形態と同量の送り量とし、その送り量は、吐出管６０に設けられたバルブ（図示省略）で調整している。
また、熱交換用油は、循環ポンプ４４によって、流出部９４から吸引され、熱交換器４３によって加熱され、加熱された熱交換用油が複数のヒートパイプ９２…９２の後方側端部の終端に接続されたヘッダー９７から複数のヒートパイプ９２…９２に吐出して加熱部９１と加熱装置４１とを循環するものである。その際、流出部９４の上方が開放されていることによって熱交換用油が膨張するのを防ぐことができ、また、仕切り板９６の高さを油槽１１内に配設される複数のヒートパイプ９２…９２の、油槽１１の上下方向における高さｈ２よりも高く設定することによって、熱交換用油を一度仕切り板９６でオーバーフローさせたのち循環ポンプ４４によって吸引させることで、循環させる熱交換用油を脱気することができる。この熱交換用油の送り量としては、調理油と熱交換用油との熱交換によって調理油を適切な調理温度に加熱できる程度の流量であれば特に制限はなく、本実施形態においても第１実施形態と同量の送り量とし、その送り量は流入管４５に設けられたバルブ（図示省略）で調整している。 The cooking oil is sucked by the transfer pump 61 from the introduction path 15 provided so as to cross the longitudinal direction of the oil tank 11, filtered by the filter 71 of the filtration unit 51, and the filtered cooking oil is the rear end of the oil tank 11. In the lower layer e of the oil tank 11, the oil tank 11 is reciprocated from the rear side to the front side, and then in the upper layer d of the oil tank 11, the oil tank 11 is reciprocated from the front side to the rear side. And the filtration unit 51 circulate, and the flow of cooking oil is generated over the entire width of the oil tank 11. The feeding amount of the cooking oil may be such that the cooking oil can be heated to an appropriate cooking temperature by heat exchange between the cooking oil and the heat exchanging oil, and that the food material 81 transported by the transport conveyor 19 does not flow backward. In this embodiment, the feed amount is the same as that in the first embodiment, and the feed amount is adjusted by a valve (not shown) provided in the discharge pipe 60.
Further, the heat exchange oil is sucked from the outflow portion 94 by the circulation pump 44 and heated by the heat exchanger 43, and the heated heat exchange oil is terminated at the rear end portions of the plurality of heat pipes 92. Is discharged from a header 97 connected to the plurality of heat pipes 92 to 92 and circulates between the heating unit 91 and the heating device 41. At that time, the heat exchanger oil can be prevented from expanding by opening the upper part of the outflow part 94, and the height of the partition plate 96 is set to the plurality of heat pipes disposed in the oil tank 11. 92 ... 92 is set to be higher than the height h2 in the vertical direction of the oil tank 11, so that heat exchange oil is once overflowed by the partition plate 96 and then sucked by the circulation pump 44 to be circulated. The oil can be degassed. The feed amount of the heat exchange oil is not particularly limited as long as the flow rate is such that the cooking oil can be heated to an appropriate cooking temperature by heat exchange between the cooking oil and the heat exchange oil. The feed amount is the same as that in the first embodiment, and the feed amount is adjusted by a valve (not shown) provided in the inflow pipe 45.

本願発明においては、調理油の油槽１１内の流れ方向と熱交換用油の加熱部３１，９１内の流れ方向は順方向であっても逆方向であってもよく適宜変更して実施できる。   In the present invention, the flow direction in the oil tank 11 for cooking oil and the flow direction in the heating units 31 and 91 for heat exchange oil may be either forward or reverse, and can be appropriately changed.

本願発明に係るフライヤー１０において、投入部２１に揚げムラを防止する撹拌部や取出部２２に別のコンベヤを設けたり、新しい調理油を供給する装置を設けるなど本願発明の目的を逸脱しない範囲で、他の部品や装置と組み合わせて使用することができる。   In the fryer 10 according to the present invention, within the range not departing from the object of the present invention, such as providing a stirrer for preventing frying unevenness in the charging unit 21 and another conveyor for the takeout unit 22 or a device for supplying new cooking oil. Can be used in combination with other parts and devices.

本願発明に係るフライヤー１０は、業務用として、天ぷらやフライ等の食材に衣がついたもの、肉団子やハンバーグ等の素揚げのもの等揚げ物の種類を問わす種々の食材を揚げるフライヤーとして使用することができる。また、油槽の大きさや熱源の種類に応じて、食品メーカー等の食品加工用、スーパー等の惣菜加工用、レストラン等での調理用フライヤー等として使用することができる。   The fryer 10 according to the present invention is used as a fryer for frying various foods for business use, such as tempura and fried foods with clothes, fried foods such as meat dumplings and hamburgers. can do. Further, it can be used as a food fryer for food processing such as a food maker, beef processing such as a supermarket, a fryer for cooking at a restaurant, etc.

（実施例１）
調理油として２Ｌの大豆油を満たした容量２．３Ｌの油槽Ｏの底部を、熱交換用油として０．５Ｌの大豆油を満たした容量２．７Ｌの油槽Ｐに浸漬し、油槽Ｐの底部をガスバーナー（バーナーのガス量 ０．１１ｍ３／Ｈｒ）で加熱した。ガスバーナーによって加熱された熱交換用油と調理油とを、油槽Ｏの底部を介して熱交換させることによって、調理油を加熱した。実験時の室温は１３℃であり、油槽Ｏと油槽Ｐには、底部に複数の起伏を有しない底部が平らなものを用いた。加熱時間毎の調理油の温度と熱交換用油の温度を測定した。測定結果を図８に示す。 (Example 1)
The bottom of the oil tank P having a capacity of 2.3 L filled with 2 L of soybean oil as cooking oil is immersed in a tank of P with a capacity of 2.7 L filled with 0.5 L of soybean oil as the oil for heat exchange. Was heated with a gas burner (gas amount of burner 0.11 m 3 / Hr). The cooking oil was heated by exchanging heat between the heat exchange oil heated by the gas burner and the cooking oil through the bottom of the oil tank O. The room temperature at the time of the experiment was 13 ° C., and the oil tank O and the oil tank P used had a flat bottom that did not have a plurality of undulations at the bottom. The temperature of cooking oil and the temperature of oil for heat exchange for each heating time were measured. The measurement results are shown in FIG.

図８に示すように、熱交換用油として食用油を用い、加熱された熱交換用油と調理油とを油槽Ｏの底部を介して熱交換させることによって、調理油を揚げ物調理に必要な温度（少なくとも１６０℃以上）にまで加熱することができ、かつその温度を維持することができることが分かった。以上のことから、本願発明に係るフライヤー１０の加熱方式は、実用に耐えうることが確認された。   As shown in FIG. 8, edible oil is used as the heat exchange oil, and the heat exchange between the heated heat exchange oil and the cooking oil is performed through the bottom of the oil tank O, so that the cooking oil is necessary for cooking fried food. It has been found that it can be heated to and maintained at a temperature (at least 160 ° C. or higher). From the above, it was confirmed that the heating method of the fryer 10 according to the present invention can withstand practical use.

１０ フライヤー
１１ 油槽
１２ 油槽の底部
１３ 複数の起伏
３１ 加熱部
４１ 加熱装置
９１ 加熱部
９２ ヒートパイプ
９３ ヒートパイプの外周壁 DESCRIPTION OF SYMBOLS 10 Flyer 11 Oil tank 12 Bottom part of oil tank 13 Plural undulation 31 Heating part 41 Heating device 91 Heating part 92 Heat pipe 93 Outer peripheral wall of heat pipe

Claims (5)

調理油を満たし食材を揚げる油槽と、上記油槽の前後方向に上記食材を搬送する搬送コンベアと、加熱部と、上記加熱部内の熱媒体によって上記調理油を加熱するフライヤーにおいて、
上記フライヤーは、上記熱媒体を加熱するための加熱装置を上記油槽の外側に備え、
上記熱媒体は熱交換用油であり、
上記油槽内には、上記油槽の底部を上方から覆う還流板を備え、上記還流板は、上記油槽の幅方向に全幅にわたって備えられ、上記油槽の上下方向を上層と下層との２層に分けるものであり、
上記油槽の前方側端部と上記還流板との間には、上記油槽の幅方向の全幅にわたって隙間が形成され、
上記搬送コンベアは、上記上層に配設され、上記食材を搬送中に揚げるものであり、
上記下層を通って上記油槽の前方側端部に向う往路の流れと、上記油槽の幅方向の全幅にわたって形成された上記隙間から上記上層に導かれ、上記上層を通って上記油槽の後方に向かう復路の流れとの、調理油の往復の流れが移送ポンプによって発生するものであり、
上記加熱部は、境界壁を介して上記下層を通る上記調理油と上記熱交換用油とを熱交換させることによって、上記調理油を加熱することを特徴とするフライヤー。 In an oil tank that fills cooking oil and fries the ingredients, a conveyor that conveys the ingredients in the front-rear direction of the oil tank, a heating unit, and a fryer that heats the cooking oil by a heat medium in the heating unit,
The fryer comprises a heating device for heating the heat medium outside the oil tank ,
The heat medium is a heat exchange oil,
The oil tank includes a reflux plate that covers the bottom of the oil tank from above, and the reflux plate is provided over the entire width of the oil tank, and the vertical direction of the oil tank is divided into two layers, an upper layer and a lower layer. Is,
Between the front side end of the oil tank and the reflux plate, a gap is formed over the entire width in the width direction of the oil tank,
The conveyor is disposed in the upper layer and fries the food during conveyance.
Through the lower layer, the forward flow toward the front end of the oil tank and the gap formed across the entire width of the oil tank are guided to the upper layer, and pass through the upper layer to the rear of the oil tank. The reciprocating flow of cooking oil with the flow of the return path is generated by the transfer pump,
The said heating part heats the said cooking oil by heat-exchanging the said cooking oil and the said oil for heat exchange which pass the said lower layer through a boundary wall, The fryer characterized by the above-mentioned. 濾過部を上記油槽の外側に備え、A filtration unit is provided outside the oil tank,
上記油槽の後方側端部には、上記上層の調理油を上記濾過部に導くための導入路と、上記濾過部にて濾過された調理油を上記下層に吐出するための吐出部とを備え、The rear end portion of the oil tank includes an introduction path for guiding the upper cooking oil to the filtration unit, and a discharge unit for discharging the cooking oil filtered by the filtration unit to the lower layer. ,
上記導入路と上記吐出部とは、上記油槽の幅方向に伸びる溝状となっており、The introduction path and the discharge part are in a groove shape extending in the width direction of the oil tank,
上記調理油は、上記油槽と上記濾過部とを循環するものであり、The cooking oil circulates between the oil tank and the filtration unit,
上記吐出部から上記下層を通って上記油槽の前方側端部に向う往路の流れと、上記油槽の幅方向の全幅にわたって形成された上記隙間から上記上層に導かれ、上記上層を通って上記油槽の前方側端部から上記導入路に向かう復路の流れの、調理油の往復の流れが移送ポンプによって発生するものであることを特徴とする、請求項１に記載のフライヤー。The oil tank is guided from the discharge section through the lower layer to the forward end of the oil tank and the gap formed across the entire width of the oil tank to the upper layer, and passes through the upper layer. The fryer according to claim 1, wherein a reciprocating flow of cooking oil in a return flow from the front end portion toward the introduction passage is generated by a transfer pump. 上記加熱装置は、上記熱交換用油を加熱し、上記調理油を直接加熱しないものであり、
上記熱交換用油が食用油であることを特徴とする請求項１又は２に記載のフライヤー。 The heating device heats the heat exchange oil and does not directly heat the cooking oil.
The fryer according to claim 1 or 2 , wherein the heat exchange oil is an edible oil. 上記加熱部には複数のヒートパイプを備え、
上記複数のヒートパイプが上記油槽内に配設され、
上記複数のヒートパイプの外周壁が上記境界壁であることを特徴とする請求項１〜３の何れかに記載のフライヤー。 The heating unit includes a plurality of heat pipes,
The plurality of heat pipes are disposed in the oil tank,
The fryer according to any one of claims 1 to 3, wherein outer peripheral walls of the plurality of heat pipes are the boundary walls. 上記加熱部が上記油槽の下方に配設され、
上記油槽の底部が上記境界壁であり、
上記油槽の底部には複数の起伏を備え、上記複数の起伏は、上記油槽の底部から上記加熱部に向けて突出していることを特徴とする請求項１〜３の何れかに記載のフライヤー。 The heating unit is disposed below the oil tank,
The bottom of the oil tank is the boundary wall;
The fryer according to any one of claims 1 to 3, wherein a plurality of undulations are provided at the bottom of the oil tank, and the plurality of undulations protrude from the bottom of the oil tank toward the heating unit.
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JPS56145826A (en) * 1980-04-14 1981-11-12 Kazuo Yachida Fryer apparatus using heat medium boiler
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JPH06105753A (en) * 1992-09-25 1994-04-19 Yanagiya:Kk Steam frier
US5253567A (en) * 1993-03-05 1993-10-19 Stein, Inc. Thermal fluid heat exchanger for deep fat fryer
JPH1147002A (en) * 1997-07-30 1999-02-23 Haisaabu Ueno:Kk Frying cooker
JP2001218687A (en) * 2000-02-14 2001-08-14 Stein Dsi Deep fryer
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