JP5362267B2 - Waste heat utilization system for commercial kitchen - Google Patents
Waste heat utilization system for commercial kitchen Download PDFInfo
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- JP5362267B2 JP5362267B2 JP2008172101A JP2008172101A JP5362267B2 JP 5362267 B2 JP5362267 B2 JP 5362267B2 JP 2008172101 A JP2008172101 A JP 2008172101A JP 2008172101 A JP2008172101 A JP 2008172101A JP 5362267 B2 JP5362267 B2 JP 5362267B2
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本発明は病院や学校などの給食センターを初め、ホテルやレストラン、社員食堂、その他の業務用厨房において、その複数のガス加熱調理機器から発生する廃熱（余熱）を、給湯に利用するためのシステムに関する。 The present invention is for using waste heat (residual heat) generated from a plurality of gas cooking appliances for hot water supply in hospitals, schools, etc., in hotels, restaurants, employee cafeterias, and other commercial kitchens. About the system.
特許第３９６３８４７号公報に記載された廃熱利用システムが、ホテルやレストランなどの業務用厨房を用途としている点で、本発明に最も近似する公知技術であると考えられる。 The waste heat utilization system described in Japanese Patent No. 3963847 is considered to be a publicly known technique that most closely approximates the present invention in that it uses a commercial kitchen such as a hotel or restaurant.
又、ガス加熱調理機器から発生する廃熱を利用して、室内を暖房するための装置が、特開昭６０−２２３９５７号公報に記載されてもいる。
ところが、上記特許文献１の対象とする調理用加熱装置（５０）は、鍋（６０）自体を発熱させる電磁誘導加熱式のクッキングヒーターであり、しかもその鍋（６０）の食材から発生する暖気（湯気）を熱回収用媒体としているため、これをたとえレンジフード（１１）の内部へ取り込んだとしても、大きな熱交換率と延いては大きな省エネ効果を期待することができない。
However, the cooking heating device (50) that is the subject of
この点、上記特許文献２はコンロ（ガス加熱調理器具）（１１）を対象としており、これから発生する廃熱を回収しているが、その熱回収用媒体も上記特許文献１と同じく熱伝導率の低い気体であって、これを室内の暖房空気として熱交換しているに過ぎないため、大きな省エネ効果や作業環境の改善効果を得られない。
In this regard, Patent Document 2 is directed to a stove (gas cooker) (11) and recovers waste heat generated from the stove. However, the heat recovery medium also has the same thermal conductivity as
特に、給食センターやホテル、大型レストランなどの業務用厨房では、ガス茹で麺器やガスフライヤー、ガスレンジ、ガス回転釜、ガススチームコンベクションオーブン、その他の各種ガス加熱調理機器が数多く使用されるため、大量の廃熱とオイルミスト（油煙）などが発生し、作業環境を著しく悪化すると共に、その厨房の換気と空調に多大のエネルギーを必要とするのである。上記特許文献１、２に開示の公知技術は、このような課題の解決に役立つこともない。
Especially in commercial kitchens such as lunch centers, hotels, and large restaurants, there are many gas cooked noodles, gas fryer, gas range, gas rotary kettle, gas steam convection oven, and other various gas cooking equipment. A large amount of waste heat and oil mist (smoke) are generated, and the working environment is remarkably deteriorated, and a large amount of energy is required for ventilation and air conditioning of the kitchen. The known techniques disclosed in
本発明はこのような課題の改良を目的としており、その目的を達成するために、請求項１では少なくともガスフライヤーとガスレンジとの２種を含む複数のガス加熱調理機器が設置される業務用厨房での廃熱利用システムであって、
The present invention aims to improve such a problem, and in order to achieve the object, in
各ガス加熱調理機器におけるガス燃焼室の周辺や排気口、その他の発熱個所へ取り付け使用される熱吸収体と、その隣り合う熱吸収体同士を直列状態に連通接続する給水循環回路と、その給水循環回路の途中に介挿設置された熱吸収用循環ポンプと、水道から給水循環回路への給水管路と、その給水管路と給水循環回路との接続部に介挿設置された第１三方切換え電磁弁と、給水循環回路から貯湯タンクへの給湯管路と、その給湯管路と給水循環回路との接続部に介挿設置された第２三方切換え電磁弁と、給水循環回路における終端側の熱吸収体と上記第２三方切換え電磁弁との相互間に介挿設置された給水温度センサーとを備え、 A heat absorber that is attached to and used in the vicinity of the gas combustion chamber, exhaust port, and other heat generating parts in each gas cooking device, a feed water circulation circuit that connects the adjacent heat absorbers in series, and its water supply A heat absorption circulation pump installed in the middle of the circulation circuit, a water supply pipeline from the water supply to the water supply circulation circuit, and a first three-way installed in the connection between the water supply pipeline and the water supply circulation circuit A switching solenoid valve , a hot water supply line from the water supply circulation circuit to the hot water storage tank, a second three-way switching electromagnetic valve installed at a connection between the hot water supply line and the water supply circulation circuit, and a terminal side in the water supply circulation circuit A water supply temperature sensor interposed between the heat absorber and the second three-way switching solenoid valve ,
上記給水循環回路を熱吸収用循環ポンプにより強制循環される給水が、各ガス加熱調理機器の発熱個所から発生する廃熱を吸収し、徐々に高く昇温する過程において、上記給水温度センサーがその給水の設定目標温度に到達したと検知した時にのみ、その検知出力電気信号により上記第１、２三方切換え電磁弁を開放作動させ、昇温状態の湯水として貯湯タンクへ給湯するように設定したことを特徴とする。 Water supply that will be forcibly circulated by the circulation pump for the heat absorbing the water circulation circuit, absorbs waste heat generated from the heat generating point of each gas cooking appliances, in gradually increasing process of raising the temperature, the feed water temperature sensor Only when it is detected that the set target temperature of the water supply has been reached, the first and second three-way switching solenoid valve is opened by the detection output electric signal, and the hot water is set to be supplied to the hot water storage tank as hot water in a temperature rise state . It is characterized by that.
又、請求項２では貯湯タンクの底部とガス瞬間湯沸し器とを連通接続する延長給湯管路の途中へ、加圧ポンプと給湯温度センサー並びに第３三方切換え電磁弁とを介挿設置して、 Further, in claim 2, a pressurizing pump, a hot water temperature sensor, and a third three-way switching electromagnetic valve are installed in the middle of an extended hot water pipe connecting the bottom of the hot water tank and the instantaneous gas water heater,
上記貯湯タンクの内部に設置した貯湯レベルセンサーが、貯湯レベルの下限から上限までの所定範囲を検知中、その検知出力電気信号により上記第３三方切換え電磁弁を開放作動させて、洗面所や流し台、浴槽、その他の各種給湯設備へ給湯するように設定したことを特徴とする。 While the hot water storage level sensor installed in the hot water storage tank detects a predetermined range from the lower limit to the upper limit of the hot water storage level, the detection output electric signal opens the third three-way switching solenoid valve to open the washroom and the sink. It is set to supply hot water to bathtubs and other various hot water supply facilities .
請求項１の構成によれば、業務用厨房に設置される複数のガス加熱調理機器を対象として、その各ガス加熱調理機器におけるガスバーナーの周辺や排気口、その他の発熱個所へ取り付けた熱吸収体により、その廃熱を吸収するようになっているため、業務用厨房に大量の廃熱やオイルミスト（油煙）、二酸化炭素（ＣＯAccording to the configuration of
しかも、各ガス加熱調理機器の熱吸収体は直列状態に連通接続されて、全体的な給水循環回路を形作っており、その内部を強制的に循環・流通される給水が熱吸収用媒体として、上記ガス加熱調理機器から発生する廃熱を吸収するようになっているため、大きな熱交換率や大きな省エネ効果のもとで、給湯に必要な昇温状態の湯水を得られるのである。In addition, the heat absorbers of each gas cooking device are connected in series to form an overall water supply circulation circuit, and the water supply that is forced to circulate and circulate inside is used as a heat absorption medium. Since the waste heat generated from the gas cooking device is absorbed, hot water with a temperature rise required for hot water supply can be obtained under a large heat exchange rate and a large energy saving effect.
更に、複数のガス加熱調理機器から発生する廃熱を吸収した給水が、その温度センサーにより予じめの設定目標温度まで達したことを検知された時にのみ、昇温状態の湯水として貯湯タンクへ給湯されるようになっているため、熱効率の向上と自動運転に役立つ。Furthermore, only when the temperature sensor detects that the water supply that has absorbed the waste heat generated from multiple gas cooking appliances has reached the preset target temperature, it is sent to the hot water storage tank as hot water in a heated state. Hot water is supplied to help improve thermal efficiency and automatic operation.
又、請求項２の構成を採用するならば、貯湯タンク内の貯湯レベルセンサーが貯湯レベルの下限から上限までの所定範囲を検知している間に、その貯湯タンクから洗面所や流し台、浴槽などの各種給湯設備へ給湯するようになっているため、安全性に富む廃熱利用システムとして提供できる効果がある。Further, if the configuration of claim 2 is adopted, while the hot water storage level sensor in the hot water storage tank detects a predetermined range from the lower limit to the upper limit of the hot water storage level, the hot water storage tank has a washroom, a sink, a bathtub, etc. Therefore, there is an effect that it can be provided as a waste heat utilization system rich in safety.
以下、図面に基いて本発明の具体的構成を詳述すると、その廃熱利用システムの全体を示した図１において、（Ｇ１）〜（Ｇ６）は給食センターやホテル、大型レストラン、社員食堂などの業務用厨房に据え付けられた第１〜６ガス加熱調理機器であり、図例の場合ガス茹で麺器（Ｇ１）とガスフライヤー（Ｇ２）、ガスレンジ（Ｇ３）、ガスローレンジ（Ｇ４）、ガス回転釜（Ｇ５）並びにガススチームコンベクションオーブン（Ｇ６）という異なる種類の合計６台から成るが、要するにガスを加熱源とする調理機器（Ｇ１）〜（Ｇ６）の複数が並ぶならば、その機器の種別を問わず、図示以外のガスコンロやガスグリドル、ガス連続フライヤー、ガス中華レンジ、ガス餃子焼き器などもあり得る。又、図例のような業務用厨房の作業床へ設置されるタイプのみならず、小型の卓上タイプもあり得る。Hereinafter, the specific configuration of the present invention will be described in detail based on the drawings. In FIG. 1 showing the entire waste heat utilization system, (G1) to (G6) are a lunch center, hotel, large restaurant, employee cafeteria, etc. 1 to 6 gas cooking equipment installed in the commercial kitchen of No. 1, in the case of the figure, the noodle device (G1) and gas fryer (G2), gas range (G3), gas low range (G4), gas It consists of a total of 6 different types of rotary kettle (G5) and gas steam convection oven (G6). In short, if a plurality of cooking appliances (G1) to (G6) using gas as a heating source are arranged, Regardless of the type, there may be gas stoves, gas griddles, gas continuous fryer, gas Chinese range, gas dumpling roasters, etc. other than those shown. In addition to the type installed on the work floor of a commercial kitchen as shown in the figure, there may be a small desktop type.
何れにしても、上記第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）の各種はガスバーナー又はガス燃焼室（１）や、天板（２）から起立する背板（３）、排気路又は排気口（４）などを具備しているため、本発明ではこれらの発熱個所へ熱吸収体（ａ１）〜（ａ６）を取り付けて、既設のガス加熱調理機器（Ｇ１）〜（Ｇ６）から発生する廃熱を、その熱吸収体（ａ１）〜（ａ６）によって吸収し、洗面所や流し台、浴槽などの給湯用として利用できるようになっている。In any case, various types of the first to sixth gas cooking devices (G1) to (G6) are the gas burner or the gas combustion chamber (1), the back plate (3) standing up from the top plate (2), the exhaust. Since the road or the exhaust port (4) is provided, the present invention attaches the heat absorbers (a1) to (a6) to these heating points, and the existing gas cooking devices (G1) to (G6). Waste heat generated from the water is absorbed by the heat absorbers (a1) to (a6) and can be used for hot water supply such as a washroom, a sink, and a bathtub.
そのための熱吸収体（ａ１）〜（ａ３）は第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）の発熱個所に応じた大きさと形状を有し、そのステンレス鋼板から成る器筐（５）に往復蛇行管（銅管）（６）（７）とこれを包囲するアルミや銅などの伝熱材（８）とが内蔵されたものであり、上記発熱個所へ着脱・交換自在に取り付け使用される。Therefore, the heat absorbers (a1) to (a3) have sizes and shapes corresponding to the heat generation points of the first to sixth gas cooking devices (G1) to (G6), and are made of stainless steel plates (5 ) Includes a reciprocating meandering pipe (copper pipe) (6) (7) and a heat transfer material (8) such as aluminum or copper surrounding the pipe, and is detachably attached to the heating point. used.
この点、図１〜５の熱吸収体（ａ１）〜（ａ６）はガス茹で麺器（Ｇ１）やガスフライヤー（Ｇ２）、ガスレンジ（Ｇ３）などの排気口（４）と対応する角筒形の器筐（５）を備えており、これを発熱個所の排気口（４）へ上方から差し込んだ使用状態において、その往復蛇行管（６）（７）を長く迂回的に流通する給水が、排気口（４）から熱伝導性の高い伝熱材（８）を介して吸収した廃熱により、昇温されるようになっている。茲に、熱伝導率の高い水（給水）を熱吸収用媒体としているのである。In this regard, the heat absorbers (a1) to (a6) in FIGS. 1 to 5 are gas cylinders and square tubes corresponding to the exhaust ports (4) of the noodle device (G1), gas fryer (G2), gas range (G3), etc. In the state of use in which it is inserted into the exhaust port (4) of the heat generating part from above, water supply that circulates long and detours through the reciprocating meander pipes (6) and (7) is provided. The temperature is raised by the waste heat absorbed from the exhaust port (4) through the heat transfer material (8) having high thermal conductivity. In addition, water with high thermal conductivity (water supply) is used as a heat absorbing medium.
又、図６、７の熱吸収体（ａ４）はガスローレンジ（Ｇ４）の天板（２）から起立する背板（３）や、ガスレンジ（Ｇ３）の背後に臨む厨房の壁面（Ｗ）などと対応する平盤形の器筐（５）を有し、これを発熱個所である上記背板（３）や壁面（Ｗ）へ取り付けた使用時に、その往復蛇行管（６）（７）を流通する給水が、やはり背板（３）や壁面（Ｗ）から伝熱材（８）を経て吸収した廃熱により、昇温されるようになっている。6 and 7, the heat absorber (a4) is a back plate (3) standing up from the top plate (2) of the gas low range (G4) and the wall surface (W) of the kitchen facing the back of the gas range (G3). And a flat plate-shaped device housing (5) corresponding to the above, and the reciprocating meander tube (6) (7) when the device is attached to the back plate (3) or the wall surface (W), which is a heat generating portion. The water supply that circulates is also heated by the waste heat absorbed through the heat transfer material (8) from the back plate (3) and the wall surface (W).
図８〜１０の熱吸収体（ａ５）はフレキシブルな器筐（５）を備えており、これをガス回転釜（Ｇ５）におけるガス燃焼室（１）の周辺（中釜）へ巻き付け使用した時、その往復蛇行管（６）（７）を流通する給水が、ガス回転釜（Ｇ５）から伝熱材（８）を経て吸収した廃熱により、やはり昇温されることになる。The heat absorber (a5) of FIGS. 8 to 10 includes a flexible casing (5), which is used when wrapped around the gas combustion chamber (1) (inner pot) of the gas rotary pot (G5). The feed water flowing through the reciprocating meander pipes (6) and (7) is also heated by the waste heat absorbed through the heat transfer material (8) from the gas rotary hook (G5).
更に、図１１の熱吸収体（ａ６）は円筒形の器筐（５）を備え、これをガススチームコンベクションオーブン（Ｇ６）の排気口（４）へ、上方から取り付け使用した搭載状態において、その往復蛇行管（６）（７）を流通する給水が、上記排気口（４）から伝熱材（８）を介して吸収した廃熱により、昇温されるようになっている。Further, the heat absorber (a6) of FIG. 11 includes a cylindrical casing (5), which is mounted on the exhaust port (4) of the gas steam convection oven (G6) from above and used in the mounted state. The water supply flowing through the reciprocating meander pipes (6) and (7) is heated by the waste heat absorbed through the heat transfer material (8) from the exhaust port (4).
尚、図１２、１３のような枠状の器筐（５）から成る熱吸収体（ａ３’）を、ガスレンジ（Ｇ３）やガステーブルにおけるガスバーナー（１）の周辺へ載置使用して、その往復蛇行管（６）（７）を流通する給水が、上記ガスバーナー（１）からの廃熱によって昇温されるように定めることも考えられる。A heat absorber (a3 ′) composed of a frame-shaped casing (5) as shown in FIGS. 12 and 13 is placed and used around the gas burner (1) in the gas range (G3) or gas table. It is also conceivable to determine that the feed water flowing through the reciprocating meander pipes (6) and (7) is heated by the waste heat from the gas burner (1).
そして、上記熱吸収体（ａ１）〜（ａ６）の何れを採用する場合にも、その器筐（５）に内蔵された往復蛇行管（６）（７）の入口部と出口部だけは、各々接手管（６ａ）（６ｂ）（７ａ）（７ｂ）として器筐（５）から予じめ張り出す状態に保ち、第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）における熱吸収体（ａ１）〜（ａ６）の隣り合う接手管（６ａ）（６ｂ）（７ａ）（７ｂ）同士を、別個な連通管（９）（１０）により直列に接続して、全体的な給水循環回路（Ｓ）を形作るのである。 And even when adopting any of the heat absorbers (a1) to (a6), only the inlet and outlet portions of the reciprocating meander pipes (6) and (7) built in the casing (5) Heat absorbers in the first to sixth gas cooking appliances (G1) to (G6), which are kept protruding from the housing (5) as joint pipes (6a) (6b) (7a) (7b), respectively. Adjacent joint pipes (6a), (6b), (7a), and (7b) of (a1) to (a6) are connected in series by separate communication pipes (9) and (10), and the entire water supply circulation circuit (S) is formed .
（１１）は上記直列状態にある第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）のうち、その第１ガス加熱調理機器（ガス茹で麺器）（Ｇ１）よりも始端側（給水の上流側）において、水道などの給水源から上記給水循環回路（Ｓ）への給水管路であり、その給水循環回路（Ｓ）との接続部に介在する第１三方切換え電磁弁（１２）によって、熱吸収用循環ポンプ（１３）と切換え弁（１４）が各々作動されるようになっている。（Ａ）はその電磁弁（１２）と循環ポンプ（１３）並びに切換え弁（１４）から成る給水切換えユニットを総称している。(11) is the first end of the first to sixth gas cooking devices (G1) to (G6) in the above-mentioned series state (G1), and the first end side (water supply) On the upstream side), a water supply line from a water supply source such as a water supply to the water supply circulation circuit (S), and by a first three-way switching electromagnetic valve (12) interposed in the connection with the water supply circulation circuit (S) The heat absorption circulation pump (13) and the switching valve (14) are each operated. (A) is a general term for a water supply switching unit comprising the solenoid valve (12), the circulation pump (13) and the switching valve (14).
他方、（１５）は第６ガス加熱調理機器（ガススチームコンベクションオーブン）（Ｇ６）よりも終端側（給水の下流側）に位置しつつ、上記業務用厨房又はその室外に据え付けられた貯湯タンクであり、断熱材によって保温できるステンレス鋼板などから作成されているが、これに代るタンク付きの電気温水器を採用しても良い。On the other hand, (15) is a hot water storage tank installed outside the commercial kitchen or in the room while located on the terminal side (downstream side of water supply) from the sixth gas cooking device (gas steam convection oven) (G6). Yes, it is made of a stainless steel plate that can be kept warm by a heat insulating material, but an electric water heater with a tank may be used instead.
（１６）はこのような貯湯タンク（１５）と上記給水循環回路（Ｓ）とを連通接続した給湯管路であり、その循環回路（Ｓ）との接続部には第２三方切換え電磁弁（１７）が介挿設置されている。(16) is a hot water supply line in which such a hot water storage tank (15) and the water supply circulation circuit (S) are connected in communication, and a second three-way switching solenoid valve ( 17) is installed.
又、（１８）は上記給水循環回路（Ｓ）を流通する給水の温度センサー（サーモスタット）であり、第６ガス加熱調理機器（ガススチームコンベクションオーブン）（Ｇ６）の熱吸収体（ａ６）から、上記第２三方切換え電磁弁（１７）に至るまでの中途部へ臨まされている。Further, (18) is a temperature sensor (thermostat) of feed water flowing through the feed water circulation circuit (S), and from the heat absorber (a6) of the sixth gas cooking device (gas steam convection oven) (G6), It faces the middle of the second three-way switching solenoid valve (17).
つまり、図例の第１ガス加熱調理機器（Ｇ１）から第６ガス加熱調理機器（Ｇ６）までの全体的な給水循環回路（Ｓ）を強制循環される給水は、その各ガス加熱調理機器（Ｇ１）〜（Ｇ６）の熱吸収体（ａ１）〜（ａ６）による廃熱吸収作用を繰り返して、徐々に高く昇温することとなるため、これを給水循環回路（Ｓ）の終端側（下流側）において、温度センサー（１８）により検知するのである。That is, the water supply forcedly circulated through the entire water supply circulation circuit (S) from the first gas cooking device (G1) to the sixth gas cooking device (G6) in the illustrated example is the gas cooking device ( Since the waste heat absorption action by the heat absorbers (a1) to (a6) of G1) to (G6) is repeated and the temperature is gradually raised, this is the terminal side (downstream) of the feed water circulation circuit (S). The temperature sensor (18).
そして、その給水温度センサー（１８）が予じめの設定温度を検知した出力電気信号に基き、第２三方切換え電磁弁（１７）が制御され、上記給水循環回路（Ｓ）から給湯管路（１６）を経て、貯湯タンク（１５）へ給湯し得るようになっている。（Ｂ）はその給水温度センサー（１８）と第２三方切換え電磁弁（１７）から成る給湯切換えユニットの総称である。The second three-way switching solenoid valve (17) is controlled on the basis of the output electric signal detected by the feed water temperature sensor (18) at the preset set temperature, and the hot water supply line (S) is connected to the hot water supply line (S). 16), hot water can be supplied to the hot water storage tank (15). (B) is a general term for a hot water supply switching unit including the water supply temperature sensor (18) and the second three-way switching electromagnetic valve (17).
更に、上記貯湯タンク（１５）の底部は延長給湯管路（１９）を介して、ガス瞬間湯沸し器（２０）と連通接続されており、その延長給湯管路（１９）の中途部には加圧ポンプ（２１）と給湯温度センサー（サーモスタット）（２２）並びに第３三方切換え電磁弁（２３）が上流側からの順次に介挿設置されている。（２４）はその延長給湯管路（１９）との並列回路を形作る給水バイパス管路であり、水道からガス瞬間湯沸し器（２０）へ直接給水することもできるようになっている。（２５）はその給水バイパス管路（２４）を開閉制御する電磁弁である。Furthermore, the bottom of the hot water storage tank (15) is connected to the gas instantaneous water heater (20) through an extended hot water supply line (19), and is added to the middle part of the extended hot water supply line (19). A pressure pump (21), a hot water supply temperature sensor (thermostat) (22) and a third three-way switching solenoid valve (23) are sequentially inserted from the upstream side. (24) is a water supply bypass line that forms a parallel circuit with the extended hot water supply line (19), and water can be directly supplied from the water supply to the gas instantaneous water heater (20). (25) is an electromagnetic valve that controls the opening and closing of the water supply bypass pipe (24).
しかも、上記貯湯タンク（１５）の内部には電極式の貯湯レベルセンサー（２６）が設置されており、これによって貯湯レベルの下限から上限までの所定範囲（Ｈ）を検知している間には、第３三方切換え電磁弁（２３）が図外の給湯設備へ給湯すべく制御することになる一方、同じく貯湯レベルの下限まで到達しない減水状態が検知された時には、上記第３三方切換え電磁弁（２３）と電磁弁（２５）がガス瞬間湯沸し器（２０）へ直接給水すべく制御するようになっている。Moreover, an electrode-type hot water storage level sensor (26) is installed inside the hot water storage tank (15), thereby detecting a predetermined range (H) from the lower limit to the upper limit of the hot water storage level. When the third three-way switching solenoid valve (23) is controlled to supply hot water to a hot water supply facility (not shown), the third three-way switching solenoid valve is detected when a low water level that does not reach the lower limit of the hot water storage level is detected. (23) and the solenoid valve (25) are controlled to supply water directly to the gas instantaneous water heater (20).
本発明に係る廃熱利用システムの電気制御回路は図示省略してあるが、その上記第１〜３三方切換え電磁弁（１２）（１７）（２３）や循環ポンプ（１３）、給水温度センサー（１８）、給湯温度センサー（２２）、貯湯レベルセンサー（２６）、加圧ポンプ（２１）、電磁弁（２５）などは図１のように、集中操作盤（２７）と電気的に接続されており、その集中操作盤（２７）によって作動制御されることとなる。Although the electrical control circuit of the waste heat utilization system according to the present invention is not shown, the first to third three-way switching solenoid valves (12) (17) (23), the circulation pump (13), the feed water temperature sensor ( 18), a hot water supply temperature sensor (22), a hot water storage level sensor (26), a pressure pump (21), a solenoid valve (25), etc. are electrically connected to the centralized operation panel (27) as shown in FIG. Therefore, the operation is controlled by the centralized operation panel (27).
即ち、その廃熱利用システムの作動について説明すると、上記貯湯タンク（１５）内の湯水が無くなり次第、給水切換えユニット（Ａ）の第１三方切換え電磁弁（１２）が給水管路（１１）から給水循環回路（Ｓ）へ給水すべく作動制御されて、その給水循環回路（Ｓ）の全体に給水が充満する。That is, the operation of the waste heat utilization system will be described. As soon as hot water in the hot water storage tank (15) is exhausted, the first three-way switching electromagnetic valve (12) of the water supply switching unit (A) is connected to the water supply line (11). The operation is controlled to supply water to the feed water circulation circuit (S), and the entire feed water circulation circuit (S) is filled with feed water.
このような給水の充満状態になると、第１三方切換え電磁弁（１２）が給水管路（１１）からの給水を閉止すると共に、第２三方切換え電磁弁（１７）が給湯管路（１６）への給湯を閉止した制御状態において、給水循環回路（Ｓ）の熱吸収用循環ポンプ（１３）が作動し始めることにより、その循環回路（Ｓ）の内部を強制的に循環・流通される給水が、第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）から発生する廃熱を、その熱吸収体（ａ１）〜（ａ６）により自づと繰り返し吸収して、徐々に高く昇温されることとなり、言わば蓄熱される結果となる。When the water supply state is full, the first three-way switching electromagnetic valve (12) closes the water supply from the water supply pipe (11), and the second three-way switching electromagnetic valve (17) is used for the hot water supply pipe (16). In a control state in which the hot water supply to the water supply is closed, the heat absorption circulation pump (13) of the water supply circulation circuit (S) starts to operate, whereby the water supply forcedly circulated and circulated in the circulation circuit (S) However, the waste heat generated from the first to sixth gas cooking devices (G1) to (G6) is repeatedly absorbed by the heat absorbers (a1) to (a6), and the temperature is gradually increased. In other words, the heat is stored.
又、その過程では第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）の発熱個所から、廃熱やオイルミスト（油煙）、二酸化炭素（ＣＯIn the process, waste heat, oil mist (oil smoke), carbon dioxide (CO2) are generated from the heat generation points of the first to sixth gas cooking appliances (G1) to (G6). 22 )などが大量に発生せず、その業務用厨房における作業環境の悪化を防止することもできるのである。) Etc. do not occur in large quantities, and the work environment in the commercial kitchen can be prevented from deteriorating.
やがて、上記給水循環回路（Ｓ）を流通中にある給水の温度が、その終端側（下流側）に位置する給湯切換えユニット（Ｂ）の給水温度センサー（１８）により、予じめの設定目標温度（例えば手洗いや入浴用では約４０〜４５℃、飲料用では約５０〜５５℃）に到達したと検知された時には、その検知出力信号により上記第１、２三方切換え電磁弁（１２）（１７）が開放状態に制御されて、給水管路（１１）から常圧の給水が第１三方切換え電磁弁（１２）と給水循環回路（Ｓ）並びに第２三方切換え電磁弁（１７）を経て流入することとなり、引き続き給湯管路（１６）から貯湯タンク（１５）への給湯が始まるのである。Eventually, the temperature of the feed water flowing through the feed water circulation circuit (S) is set by the feed water temperature sensor (18) of the hot water supply switching unit (B) located on the end side (downstream side) of the target set in advance. When it is detected that the temperature (for example, about 40 to 45 ° C. for hand washing or bathing, about 50 to 55 ° C. for beverages) is reached, the first and second three-way switching solenoid valves (12) (12) ( 17) is controlled to be open, and normal-pressure water from the water supply line (11) passes through the first three-way switching solenoid valve (12), the feed water circulation circuit (S), and the second three-way switching solenoid valve (17). Then, the hot water supply from the hot water supply pipe (16) to the hot water storage tank (15) starts.
又、同じく給湯切換えユニット（Ｂ）の給水温度センサー（１８）がその流通中にある湯水の温度を例えば約４０℃として、設定目標温度よりも低下したと検知した時には、上記第１、２三方切換え電磁弁（１２）（１７）が閉止された制御状態において、再び熱吸収用の循環ポンプ（１３）が作動し始めることにより、その給水循環回路（Ｓ）を循環・流通中の給水に第１〜６ガス加熱調理機器（Ｇ１）〜（Ｇ６）の廃熱を吸収させて、給湯できる設定目標温度まで高く昇温させる。Similarly, when the feed water temperature sensor (18) of the hot water supply switching unit (B) detects that the temperature of the hot water in the circulation is about 40 ° C. and is lower than the set target temperature, the first, second, third In the control state in which the switching solenoid valves (12) and (17) are closed, the heat absorption circulation pump (13) starts to operate again, so that the water supply circulation circuit (S) is connected to the water being circulated and distributed. The waste heat of 1-6 gas heating cooking appliances (G1)-(G6) is absorbed, and it heats up high to the setting target temperature which can supply hot water.
そして、貯湯タンク（１５）の貯湯レベルセンサー（２６）が貯湯レベルの満水状態を検知するまでの間には、その検知出力信号を受けた延長給湯管路（１９）の加圧ポンプ（２１）が作動し、第３三方切換え電磁弁（２３）から洗面所や浴槽、流し台、その他の各種給湯設備へ給湯されることになる。And until the hot water storage level sensor (26) of the hot water storage tank (15) detects the hot water level of the hot water storage level, the pressurizing pump (21) of the extended hot water supply line (19) that has received the detection output signal. Is operated, and hot water is supplied from the third three-way switching solenoid valve (23) to a washroom, a bathtub, a sink, and other various hot water supply facilities.
同じく貯湯タンク（１５）の貯湯レベルセンサー（２６）がその貯湯レベルの減水状態を検知した時には、上記加圧ポンプ（２１）が作動せず、給水バイパス管路（２４）からガス瞬間湯沸し器（２０）へ直接給水されるのである。Similarly, when the hot water storage level sensor (26) of the hot water storage tank (15) detects a reduced water level of the hot water storage level, the pressurizing pump (21) does not operate and an instantaneous gas water heater (24) is supplied from the water supply bypass line (24). 20) is directly supplied with water.
尚、上記給水循環回路（Ｓ）を形作っている接手管（６ａ）（６ｂ）（７ａ）（７ｂ）と連通管（９）（１０）との接続部やその他の中途部から、万一給水の漏洩が発生したような場合、これを検知したセンサー（図示省略）の出力電気信号に基いて、その熱吸収用循環ポンプ（１３）の作動を停止させるべく、上記集中操作盤（２７）により自動制御することも考えられる。It should be noted that the water supply should be provided from the connection between the joint pipes (6a), (6b), (7a), (7b) and the communication pipes (9), (10) forming the water supply circulation circuit (S) and other intermediate parts. In the case where a leak occurs, the centralized operation panel (27) uses the centralized operation panel (27) to stop the operation of the circulation pump (13) for heat absorption based on the output electric signal of a sensor (not shown) that detects this leakage. Automatic control is also conceivable.
（１）・ガスバーナー又はガス燃焼室
（２）・天板
（３）・背板
（４）・排気口
（５）・器筐
（６）（７）・往復蛇行管
（６ａ）（６ｂ）（７ａ）（７ｂ）・接手管
（８）・伝熱材
（９）（１０）・連通管
（１１）・給水管路
（１２）・第１三方切換え電磁弁
（１３）・循環ポンプ
（１４）・切換え弁
（１５）・貯湯タンク
（１６）・給湯管路
（１７）・第２三方切換え電磁弁
（１８）・給水温度センサー
（１９）・延長給湯管路
（２０）・ガス瞬間湯沸し器
（２１）・加圧ポンプ
（２２）・給湯温度センサー
（２３）・第３三方切換え電磁弁
（２４）・給水バイパス管路
（２５）・電磁弁
（２６）・貯湯レベルセンサー
（２７）・集中操作盤
（Ａ）・給水切換えユニット
（Ｂ）・給湯切換えユニット
（Ｇ１）・第１ガス加熱調理機器（ガス茹で麺器）
（Ｇ１）・第２ガス加熱調理機器（ガスフライヤー） （Ｇ１）・第３ガス加熱調理機器（ガスレンジ）
（Ｇ１）・第４ガス加熱調理機器（ガスローレンジ）
（Ｇ１）・第５ガス加熱調理機器（ガス回転釜）
（Ｇ１）・第６ガス加熱調理機器（ガススチームコンベクションオーブン）
（Ｈ）・貯湯範囲
（Ｓ）・給水循環回路
（ａ１）〜（ａ６）（ａ３’）・熱吸収体
(1)-Gas burner or gas combustion chamber (2)-Top plate (3)-Back plate (4)-Exhaust port (5)-Case (6) (7)-Reciprocating meander pipe (6a) (6b) (7a) (7b) · Joint pipe (8) · Heat transfer material (9) (10) · Communication pipe (11) · Water supply pipe (12) · First three-way switching solenoid valve (13) · Circulation pump (14 ) · Switching valve (15) · Hot water storage tank (16) · Hot water supply pipe (17) · Second three-way switching solenoid valve (18) · Water temperature sensor (19) · Extended hot water supply pipe (20) · Instantaneous gas water heater (21) · Pressurizing pump (22) · Hot water temperature sensor (23) · Third three-way solenoid valve (24) · Water supply bypass line (25) · Solenoid valve (26) · Hot water storage level sensor (27) · Concentration Operation panel (A) / Water supply switching unit (B) / Hot water supply switching unit (G1) / First gas Cooking equipment (gas noodles with noodles)
(G1)-Second gas cooking device (gas fryer) (G1)-Third gas cooking device (gas range)
(G1) · 4th gas cooking device (gas low range)
(G1) · 5th gas cooking device (gas rotary kettle)
(G1)-6th gas cooking device (gas steam convection oven)
(H) · Hot water storage range (S) · Water supply circulation circuit (a1) to (a6) (a3 ') · Heat absorber
Claims (2)
各ガス加熱調理機器におけるガス燃焼室の周辺や排気口、その他の発熱個所へ取り付け使用される熱吸収体と、その隣り合う熱吸収体同士を直列状態に連通接続する給水循環回路と、その給水循環回路の途中に介挿設置された熱吸収用循環ポンプと、水道から給水循環回路への給水管路と、その給水管路と給水循環回路との接続部に介挿設置された第１三方切換え電磁弁と、給水循環回路から貯湯タンクへの給湯管路と、その給湯管路と給水循環回路との接続部に介挿設置された第２三方切換え電磁弁と、給水循環回路における終端側の熱吸収体と上記第２三方切換え電磁弁との相互間に介挿設置された給水温度センサーとを備え、
上記給水循環回路を熱吸収用循環ポンプにより強制循環される給水が、各ガス加熱調理機器の発熱個所から発生する廃熱を吸収し、徐々に高く昇温する過程において、上記給水温度センサーがその給水の設定目標温度に到達したと検知した時にのみ、その検知出力電気信号により上記第１、２三方切換え電磁弁を開放作動させ、昇温状態の湯水として貯湯タンクへ給湯するように設定したことを特徴とする業務用厨房の廃熱利用システム。 A waste heat utilization system in a commercial kitchen in which a plurality of gas cooking devices including at least two types of gas fryer and gas range are installed,
A heat absorber that is attached to and used in the vicinity of the gas combustion chamber, exhaust port, and other heat generating parts in each gas cooking device, a feed water circulation circuit that connects the adjacent heat absorbers in series, and its water supply A heat absorption circulation pump installed in the middle of the circulation circuit, a water supply pipeline from the water supply to the water supply circulation circuit, and a first three-way installed in the connection between the water supply pipeline and the water supply circulation circuit A switching solenoid valve , a hot water supply line from the water supply circulation circuit to the hot water storage tank, a second three-way switching electromagnetic valve installed at a connection between the hot water supply line and the water supply circulation circuit, and a terminal side in the water supply circulation circuit A water supply temperature sensor interposed between the heat absorber and the second three-way switching solenoid valve ,
Water supply that will be forcibly circulated by the circulation pump for the heat absorbing the water circulation circuit, absorbs waste heat generated from the heat generating point of each gas cooking appliances, in gradually increasing process of raising the temperature, the feed water temperature sensor Only when it is detected that the set target temperature of the water supply has been reached, the first and second three-way switching solenoid valve is opened by the detection output electric signal, and the hot water is set to be supplied to the hot water storage tank as hot water in a temperature rise state . A waste heat utilization system for commercial kitchens.
上記貯湯タンクの内部に設置した貯湯レベルセンサーが、貯湯レベルの下限から上限までの所定範囲を検知中、その検知出力電気信号により上記第３三方切換え電磁弁を開放作動させて、洗面所や流し台、浴槽、その他の各種給湯設備へ給湯するように設定したことを特徴とする請求項１記載の業務用厨房の廃熱利用システム。 A pressurizing pump, a hot water temperature sensor, and a third three-way switching solenoid valve are installed in the middle of the extended hot water pipe connecting the bottom of the hot water storage tank and the gas instantaneous water heater.
While the hot water storage level sensor installed in the hot water storage tank detects a predetermined range from the lower limit to the upper limit of the hot water storage level, the detection output electric signal opens the third three-way switching solenoid valve to open the washroom and the sink. The waste heat utilization system for a commercial kitchen according to claim 1, wherein the system is set to supply hot water to a hot water bath, a bathtub, and other various hot water supply facilities .
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| CN105423369A (en) * | 2015-12-10 | 2016-03-23 | 合肥顺昌分布式能源综合应用技术有限公司 | Unpowered flue gas waste heat recovery and hot water supply system for commercial gas cooking ovens |
| CN105711515A (en) * | 2016-01-21 | 2016-06-29 | 王宝才 | Multifunctional shower system for motor home |
| CN109915864B (en) * | 2019-04-03 | 2023-12-22 | 杭州德商环境科技有限公司 | Safe energy-saving gas cooking bench and intelligent kitchen gas energy-saving system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS56138641A (en) * | 1980-03-31 | 1981-10-29 | Hiroshi Kashima | Preheating device for supplied water for hot water boiler |
| JPS60223957A (en) * | 1984-04-20 | 1985-11-08 | Nippon Denso Co Ltd | Indoor heating device utilizing waste heat of cooking device |
| JP3594252B2 (en) * | 1994-07-11 | 2004-11-24 | 東京瓦斯株式会社 | Cogeneration system |
| JPH08226705A (en) * | 1995-02-21 | 1996-09-03 | Yasuaki Maruta | Hot water tank utilizing waste heat |
| JP3963847B2 (en) * | 2003-02-03 | 2007-08-22 | 東光電気株式会社 | Waste heat utilization system |
| JP2005093127A (en) * | 2003-09-12 | 2005-04-07 | Fuji Electric Holdings Co Ltd | Fuel cell cogeneration system and its operation method |
| JP2005164180A (en) * | 2003-12-05 | 2005-06-23 | Riso Jitsugyo:Kk | Heat exchanger |
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