JPH0751035A - Apparatus for heat treatment under reduced pressure - Google Patents
Apparatus for heat treatment under reduced pressureInfo
- Publication number
- JPH0751035A JPH0751035A JP22220693A JP22220693A JPH0751035A JP H0751035 A JPH0751035 A JP H0751035A JP 22220693 A JP22220693 A JP 22220693A JP 22220693 A JP22220693 A JP 22220693A JP H0751035 A JPH0751035 A JP H0751035A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- refrigeration system
- exchange chamber
- heat exchange
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱処理室内を減圧状態
にして供給した流体により被熱処理物を加熱や冷却の熱
処理するものに関する。具体的には、各種食品の殺菌や
滅菌、あるいは、冷却や凝固等を行う減圧熱処理装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment for heating or cooling an object to be heat treated by a fluid supplied in a pressure-reduced chamber. Specifically, the present invention relates to a reduced pressure heat treatment apparatus that sterilizes or sterilizes various foods, or cools or solidifies.
【０００２】[0002]
【従来技術】従来の食品の熱処理装置としては、例えば
特公昭５７−５６８５５号公報に示された技術が用いら
れていた。これは、大気に連通する空気排出ダクトを設
けたスチ―ムトンネル内に熱処理対象物を搬送するコン
ベアを配置し、コンベアの下側に蒸気吹出しパイプを設
け、このパイプに温度調節弁等からなる自動恒温制御器
セットを連通すると共に、蒸気配管の所要箇所に自動気
水分離器セットと自動減圧弁セットを取付けたものであ
る。自動減圧弁セットで比較的低圧に減圧した蒸気を、
自動恒温制御器セットを介して蒸気吹出しパイプからス
チ―ムトンネル内に供給することにより８７度Ｃから９
８度Ｃ程度の蒸気温度でもって熱処理ができるものであ
る。2. Description of the Related Art As a conventional heat treatment apparatus for food, for example, the technique disclosed in Japanese Patent Publication No. 57-56855 is used. This is a conveyor that conveys the object of heat treatment is placed in a steam tunnel equipped with an air discharge duct that communicates with the atmosphere, a steam blow-out pipe is installed below the conveyor, and this pipe is an automatic temperature control valve. A constant temperature controller set is communicated with, and an automatic steam separator set and an automatic pressure reducing valve set are installed at required locations of the steam pipe. Steam reduced to a relatively low pressure with an automatic pressure reducing valve set,
By supplying steam into the steam tunnel from the steam outlet pipe via the automatic constant temperature controller set, the temperature will change from 87 ° C to 9 ° C.
It can be heat-treated at a steam temperature of about 8 ° C.
【０００３】[0003]
【本発明が解決しようとする課題】上記従来の熱処理装
置では、被熱処理物の加熱後の冷却を自然放熱によるた
めに冷却効率が悪い問題があった。また、冷却を冷却水
により行うためには別途冷却水槽が必要となり、大きな
設置スペ―スが必要となったり、設備費が嵩む問題があ
った。In the above-mentioned conventional heat treatment apparatus, there is a problem that the cooling efficiency is poor because the cooling after heating the object to be heat treated is performed by natural heat radiation. Further, in order to perform cooling with cooling water, a separate cooling water tank is required, which requires a large installation space and increases equipment costs.
【０００４】また上記従来の熱処理装置では、９０度Ｃ
程度以下の低温蒸気温度では精度良く熱処理できない問
題があった。これはスチ―ムトンネル内を大気圧状態と
しているためで、蒸気は圧力と温度が一義的に定まり大
気圧下ではほぼ１００度Ｃとなり低温蒸気たり得ないた
めである。食品の種類によっては、９０度Ｃ以下でなけ
れば焦げや熱損傷を来たしてしまうものがあり、この様
なものには上記従来の熱処理装置は使用できないのであ
る。In the above conventional heat treatment apparatus, 90 ° C.
There was a problem that the heat treatment could not be performed accurately at a low temperature of steam below a certain level. This is because the inside of the steam tunnel is under atmospheric pressure, and the pressure and temperature of steam are uniquely determined, and under atmospheric pressure, the temperature is almost 100 ° C. and cannot be low-temperature steam. Depending on the type of food, if it is not lower than 90 ° C., it may cause charring or heat damage, and the conventional heat treatment apparatus cannot be used for such food.
【０００５】従って本発明の技術的課題は、９０度Ｃ以
下の低温まで加熱処理ができるようにすると共に、簡単
な設備で効率良く冷却することもできるようにすること
である。Therefore, a technical object of the present invention is to make it possible to heat-treat to a low temperature of 90 ° C. or lower, and to efficiently cool it with a simple facility.
【０００６】[0006]
【課題を解決する為の手段】本発明の減圧熱処理装置の
構成は次の通りである。被熱処理物と熱交換する熱交換
室を形成し、該熱交換室に熱処理のための流体を供給す
る流体供給通路を接続し、エゼクタとタンクと循環ポン
プとから成る減圧手段を上記熱交換室と接続し、圧縮機
と凝縮器と膨脹弁と蒸発器とから成る冷凍システムを配
置して、該冷凍システムの蒸発器と上記減圧手段を循環
する流体との間で熱交換すると共に、冷凍システムの凝
縮器で上記熱交換室の一部を形成したものである。The structure of the reduced pressure heat treatment apparatus of the present invention is as follows. A heat exchange chamber for exchanging heat with an object to be heat treated is formed, a fluid supply passage for supplying a fluid for heat treatment is connected to the heat exchange chamber, and a decompression means including an ejector, a tank and a circulation pump is provided in the heat exchange chamber. A refrigeration system including a compressor, a condenser, an expansion valve, and an evaporator is disposed so as to exchange heat between the evaporator of the refrigeration system and the fluid circulating in the pressure reducing means, and the refrigeration system. The heat exchange chamber is partly formed by the condenser.
【０００７】[0007]
【作用】流体供給通路と接続した熱交換室に冷却流体を
供給し、減圧手段で熱交換室内を減圧状態とすることに
より、熱交換室内で冷却流体が蒸発しその蒸発潜熱によ
り被熱処理物を冷却する。冷却流体の一部と気化蒸気は
減圧手段に吸引され循環ポンプにより循環する。この循
環流体は冷凍システムの蒸発器と熱交換することにより
所望の流体温度となり、エゼクタでの吸引力、すなわ
ち、熱交換室内の減圧度を所望値に維持する。冷却流体
としては通常の水でも良いし、その他必要とする冷却温
度に応じて従来公知の冷媒等を用いることができる。By supplying the cooling fluid to the heat exchange chamber connected to the fluid supply passage and depressurizing the heat exchange chamber by the decompression means, the cooling fluid is evaporated in the heat exchange chamber and the heat treatment object is removed by the latent heat of vaporization. Cooling. A part of the cooling fluid and the vaporized vapor are sucked by the pressure reducing means and circulated by the circulation pump. This circulating fluid has a desired fluid temperature by exchanging heat with the evaporator of the refrigeration system, and maintains the suction force at the ejector, that is, the degree of pressure reduction in the heat exchange chamber at a desired value. Ordinary water may be used as the cooling fluid, or a conventionally known refrigerant or the like may be used depending on the required cooling temperature.
【０００８】冷凍システムも従来周知のものを用いるこ
とができ、蒸発器で周囲から熱を奪って冷却し、凝縮器
で周囲に熱を与えて加熱するものであればどのようなも
のでも用いることができる。As the refrigeration system, a well-known one can be used, and any one can be used as long as it takes heat from the surroundings by the evaporator to cool it and heats it by giving heat to the surroundings by the condenser. You can
【０００９】本発明においては、冷凍システムの凝縮器
で熱交換室の一部を構成したことにより、この熱交換室
で被熱処理物を加熱することができる。従って、冷凍シ
ステムの凝縮器で被熱処理物を加熱したり、冷却流体に
より被熱処理物を気化冷却したりすることができる。In the present invention, since the condenser of the refrigeration system constitutes a part of the heat exchange chamber, the object to be heat treated can be heated in this heat exchange chamber. Therefore, the object to be heat treated can be heated by the condenser of the refrigeration system, or the object to be heat treated can be vaporized and cooled by the cooling fluid.
【００１０】[0010]
【実施例】図示の実施例を詳細に説明する。図１におい
て、被熱処理物の通過するパイプ１と、熱交換室２，３
と、減圧手段４と、冷凍システム５とで減圧熱処理装置
を構成する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described in detail. In FIG. 1, a pipe 1 through which an object to be heat treated passes and heat exchange chambers 2 and 3
The decompression means 4 and the refrigeration system 5 constitute a decompression heat treatment apparatus.
【００１１】被熱処理物の通過するパイプ１は、長尺状
で内部を連続的に被熱処理物が流下するものである。パ
イプ１のほぼ全周にわたってジャケット状の熱交換室
２，３を設ける。熱交換室２は、後述する冷凍システム
５の凝縮器に相当して加熱流体入口６と出口７を形成す
る。熱交換室３には減圧手段４の循環流体が流入する冷
却流体入口８と出口９を形成する。被熱処理物はパイプ
１内の矢印で示すように左から右へ流下しても良いし、
あるいは目的に応じて逆に流下することも、また、図示
しない別ラインのパイプで加熱と冷却を個別に行うもの
であっても良い。The pipe 1 through which the material to be heat treated passes is long and the material to be heat treated continuously flows down inside. Jacket-shaped heat exchange chambers 2 and 3 are provided over substantially the entire circumference of the pipe 1. The heat exchange chamber 2 forms a heating fluid inlet 6 and an outlet 7 corresponding to the condenser of the refrigeration system 5 described later. The heat exchange chamber 3 is formed with a cooling fluid inlet 8 and an outlet 9 into which the circulating fluid of the pressure reducing means 4 flows. The object to be heat treated may flow from left to right as indicated by the arrow in the pipe 1,
Alternatively, it may be flowed backward depending on the purpose, or heating and cooling may be separately performed by a pipe in another line (not shown).
【００１２】減圧手段４は、エゼクタ１０とタンク１１
と循環ポンプ１２とを組合せたもので、循環ポンプ１２
の駆動によりタンク１１内の冷却流体がポンプ１２から
エゼクタ１０へと循環して、エゼクタ１０部で吸引作用
をさせるものである。循環流体の一部は弁１３を介して
冷却流体入口８へと至る。タンク１１内には冷凍システ
ム５の蒸発器１４を配置して、タンク１１内の循環流体
と熱交換するようにする。この減圧手段４は、エゼクタ
１０を通過する流体の温度に相当する飽和圧力の吸引力
を生じ、熱交換室３内を減圧状態にすると共に、熱交換
室３内で発生する気化蒸気や残った冷却水の一部も吸引
するものである。The decompression means 4 includes an ejector 10 and a tank 11.
And the circulation pump 12 are combined, the circulation pump 12
The cooling fluid in the tank 11 circulates from the pump 12 to the ejector 10 by the drive of the above, and the ejector 10 part has a suction action. A part of the circulating fluid reaches the cooling fluid inlet 8 via the valve 13. The evaporator 14 of the refrigeration system 5 is arranged in the tank 11 so as to exchange heat with the circulating fluid in the tank 11. The depressurizing means 4 generates a suction force of a saturation pressure corresponding to the temperature of the fluid passing through the ejector 10, depressurizes the heat exchange chamber 3, and vaporized steam generated in the heat exchange chamber 3 and the remaining vapor. It also sucks some of the cooling water.
【００１３】冷凍システム５は、蒸発器１４と圧縮機１
５と、凝縮器に相当する熱交換室２と、膨脹弁１６とで
構成する。冷凍システム５内を循環するブラインは、圧
縮機１５で圧縮され、加熱流体入口６から出口７へ至る
間に熱交換室２内で被熱処理物を加熱し、膨脹弁１６で
絞られ蒸発器１４でタンク１１内の流体を冷却するもの
である。The refrigeration system 5 includes an evaporator 14 and a compressor 1.
5, the heat exchange chamber 2 corresponding to the condenser, and the expansion valve 16. The brine circulating in the refrigeration system 5 is compressed by the compressor 15, heats the heat-treated object in the heat exchange chamber 2 from the heating fluid inlet 6 to the outlet 7, and is narrowed by the expansion valve 16 and the evaporator 14 Is for cooling the fluid in the tank 11.
【００１４】次に作用を説明する。パイプ１内を流下す
る被熱処理物は、まず熱交換室２において冷凍システム
５のブラインにより加熱され、次の熱交換室３部に至
る。熱交換室３内は、減圧手段４のエゼクタ１０により
減圧状態にされると共に、循環流体の一部が弁１２を介
して供給される。供給された流体は被熱処理物の熱を奪
って直ちに蒸発することによりその蒸発潜熱でもって被
熱処理物を冷却する。従って、パイプ１内を流下する被
熱処理物は、熱交換室２で比較的低温の加熱をされ、続
いて熱交換室３で同じく比較的低温で冷却されるもので
ある。Next, the operation will be described. The object to be heat-treated that flows down in the pipe 1 is first heated in the heat exchange chamber 2 by the brine of the refrigeration system 5 and reaches the next heat exchange chamber 3 part. The interior of the heat exchange chamber 3 is decompressed by the ejector 10 of the decompression unit 4, and a part of the circulating fluid is supplied through the valve 12. The supplied fluid removes heat from the object to be heat treated and immediately evaporates to cool the object to be heat treated by the latent heat of vaporization. Therefore, the object to be heat-treated that flows down in the pipe 1 is heated in the heat exchange chamber 2 at a relatively low temperature, and then cooled in the heat exchange chamber 3 at a relatively low temperature.
【００１５】[0015]
【発明の効果】本発明によれば、冷凍システムの凝縮器
でもって被熱処理物を加熱することにより９０度Ｃ以下
の低温であっても加熱することができると共に、水や冷
媒等任意の冷却流体の供給により所望温度で冷却するこ
ともできる。EFFECTS OF THE INVENTION According to the present invention, a condenser of a refrigeration system can heat an object to be heat-treated even at a low temperature of 90 ° C. or lower, and can cool water, a refrigerant or the like. It is also possible to cool to a desired temperature by supplying a fluid.
【図１】本発明の減圧熱処理装置の実施例の構成図であ
る。FIG. 1 is a configuration diagram of an embodiment of a reduced pressure heat treatment apparatus of the present invention.
１ パイプ ２，３ 熱交換室 ４ 減圧手段 ５ 冷凍システム ６ 加熱流体入口 ８ 冷却流体入口 １０ エゼクタ １１ タンク １２ 循環ポンプ １４ 蒸発器 １５ 圧縮機 １６ 膨脹弁 DESCRIPTION OF SYMBOLS 1 pipe 2,3 heat exchange chamber 4 decompression means 5 refrigeration system 6 heating fluid inlet 8 cooling fluid inlet 10 ejector 11 tank 12 circulation pump 14 evaporator 15 compressor 16 expansion valve
Claims (1)
し、該熱交換室に熱処理のための流体を供給する流体供
給通路を接続し、エゼクタとタンクと循環ポンプとから
成る減圧手段を上記熱交換室と接続し、圧縮機と凝縮器
と膨脹弁と蒸発器とから成る冷凍システムを配置して、
該冷凍システムの蒸発器と上記減圧手段を循環する流体
との間で熱交換すると共に、冷凍システムの凝縮器で上
記熱交換室の一部を形成したことを特徴とする減圧熱処
理装置。1. A decompression means comprising a heat exchange chamber for exchanging heat with an object to be heat treated, a fluid supply passage for supplying a fluid for heat treatment to the heat exchange chamber, the ejector, a tank and a circulation pump. Is connected to the heat exchange chamber, and a refrigeration system consisting of a compressor, a condenser, an expansion valve and an evaporator is arranged,
A reduced pressure heat treatment apparatus, wherein heat is exchanged between an evaporator of the refrigeration system and a fluid circulating in the decompression means, and a part of the heat exchange chamber is formed by a condenser of the refrigeration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22220693A JP3018009B2 (en) | 1993-08-12 | 1993-08-12 | Vacuum heat treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22220693A JP3018009B2 (en) | 1993-08-12 | 1993-08-12 | Vacuum heat treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0751035A true JPH0751035A (en) | 1995-02-28 |
| JP3018009B2 JP3018009B2 (en) | 2000-03-13 |
Family
ID=16778805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22220693A Expired - Fee Related JP3018009B2 (en) | 1993-08-12 | 1993-08-12 | Vacuum heat treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3018009B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697248A (en) * | 2015-03-26 | 2015-06-10 | 广东美的暖通设备有限公司 | Heat pump water heater and heat exchanger for same |
-
1993
- 1993-08-12 JP JP22220693A patent/JP3018009B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697248A (en) * | 2015-03-26 | 2015-06-10 | 广东美的暖通设备有限公司 | Heat pump water heater and heat exchanger for same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3018009B2 (en) | 2000-03-13 |
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