JP3173535B2 - Slow cooling method and device in vacuum cooling device - Google Patents
Slow cooling method and device in vacuum cooling deviceInfo
- Publication number
- JP3173535B2 JP3173535B2 JP06356593A JP6356593A JP3173535B2 JP 3173535 B2 JP3173535 B2 JP 3173535B2 JP 06356593 A JP06356593 A JP 06356593A JP 6356593 A JP6356593 A JP 6356593A JP 3173535 B2 JP3173535 B2 JP 3173535B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- cooling
- cooled
- cooling tank
- vacuum
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
Landscapes
- Freezing, Cooling And Drying Of Foods (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被冷却物、例えば加熱
調理された食品を冷却するのに利用される真空冷却装置
における徐冷方法および装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slow cooling method and apparatus in a vacuum cooling apparatus used for cooling an object to be cooled, for example, a cooked food.
【０００２】[0002]
【従来の技術】一般に、加熱調理された食品を容器詰め
して発送する場合、高温のままでは、容器内面に水分が
付着し、見映えが悪くなるのみならず、付着水分が食品
に滴下して風味を損なうため、冷却後に容器詰めが行わ
れている。2. Description of the Related Art In general, when a cooked food is packed in a container and shipped, if the temperature is high, moisture adheres to the inner surface of the container, and not only does the appearance deteriorate, but also the adhering water drops on the food. In order to impair the flavor, containers are packed after cooling.
【０００３】ところで、食品を大量生産する食品工場で
は、上記冷却を短時間で終了させることが要望され、そ
こで、加熱調理された食品を冷却槽内に収容し、該冷却
槽内を空気を吸引排気することによって食品中の水分を
活発に蒸発させ、その蒸発の際の気化潜熱を食品から奪
うことにより冷却する真空冷却装置が用いられている。In a food factory that mass-produces foods, it is desired that the above-mentioned cooling be completed in a short time. Therefore, the cooked foods are stored in a cooling tank, and air is sucked through the cooling tank. 2. Description of the Related Art Vacuum cooling devices have been used that actively evaporate water in food by exhausting air, and deprive food of latent heat of vaporization during the evaporation by cooling.
【０００４】しかしながら、従来の真空冷却装置におい
て、高温の食品を冷却槽内に収容して真空冷却する場
合、冷却槽内の減圧が急激であるため、食品によって
は、例えばソース、スープ等の液体状食品は、水分の沸
点が急降下して突沸現象（急に沸騰を起こす現象）を起
し、この突沸現象により食品が破裂飛散して商品価値を
失うという欠点があった。However, in a conventional vacuum cooling apparatus, when a high-temperature food is accommodated in a cooling tank and vacuum-cooled, the pressure in the cooling tank is rapidly reduced. The state food has a drawback that the boiling point of the water drops sharply to cause a bumping phenomenon (a phenomenon of sudden boiling), and the bumping phenomenon causes the food to burst and lose its commercial value.
【０００５】そこで、従来の真空冷却装置では、冷却槽
と真空発生ユニットとを接続する排気管の途中にリーク
弁を設け、突沸を起す食品に対しては、冷却槽内を真空
発生ユニットにより排気管を介して真空排気させると同
時に、リーク弁により空気を漏らして徐々に減圧させる
ことにより、食品を徐冷させて突沸を起さずに冷却する
ようにしている。Therefore, in a conventional vacuum cooling apparatus, a leak valve is provided in the middle of an exhaust pipe connecting the cooling tank and the vacuum generating unit, and the inside of the cooling tank is evacuated by the vacuum generating unit for foods that generate bumping. At the same time as evacuating through a pipe, the air is leaked by a leak valve to gradually reduce the pressure, so that the food is gradually cooled so as not to cause bumping.
【０００６】[0006]
【発明が解決しようとする課題】ところが、従来の真空
冷却装置は、突沸を起す食品に対して真空冷却する場
合、始めからリーク弁により空気を漏らし徐冷している
ため、冷却に長時間を要して作業性が悪いという問題が
あった。However, in the conventional vacuum cooling device, when vacuum-cooling food that causes bumping, air is leaked from a leak valve and cooled slowly from the beginning. In short, there was a problem that workability was poor.
【０００７】そこで、本発明は上記の如き問題を解消し
得る真空冷却装置における徐冷方法および装置を提供す
ることを目的とするものである。Accordingly, an object of the present invention is to provide a slow cooling method and apparatus in a vacuum cooling apparatus that can solve the above-mentioned problems.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するため、被冷却物の温度および冷却槽内の圧力を測定
し、冷却槽内の圧力を被冷却物の初期温度に対する飽和
圧力になるまで急速に減圧し、その後、被冷却物の飽和
圧力線に沿うように冷却槽内の圧力を徐々に減圧するよ
うにしたものである。In order to achieve the above object, the present invention measures the temperature of the object to be cooled and the pressure in the cooling bath, and converts the pressure in the cooling bath to a saturation pressure with respect to the initial temperature of the object to be cooled. The pressure in the cooling bath is reduced rapidly until it becomes as low as possible, and then the pressure in the cooling tank is gradually reduced along the saturation pressure line of the object to be cooled.
【０００９】[0009]
【作用】本発明によれば、突沸を起す被冷却物を真空冷
却する場合、冷却槽内の圧力を被冷却物に対する飽和圧
力になるまでは急激に減圧し、その後は被冷却物の飽和
圧力線に沿うように徐々に減圧するから、被冷却物は徐
冷されて突沸を起さずに短時間に冷却される。According to the present invention, when the object to be cooled which is bumped is vacuum-cooled, the pressure in the cooling tank is rapidly reduced until it reaches the saturation pressure for the object to be cooled, and thereafter the saturation pressure of the object to be cooled is reduced. Since the pressure is gradually reduced along the line, the object to be cooled is gradually cooled and is cooled in a short time without causing bumping.
【００１０】[0010]
【実施例】図１は本発明を実施する装置の一例を示す概
略図である。FIG. 1 is a schematic diagram showing an example of an apparatus for carrying out the present invention.
【００１１】同図において、（１）は前面または前後面
に開閉可能な扉（図示せず）を備えた冷却槽で、内部に
食品（ａ）を収納する容器（２）を備えている。（３）
は冷却槽（１）内から空気を吸引する真空発生ユニット
で、水エジェクター（４）を使用した湿式真空ポンプ
（５）で構成され、高速高真空度が得られる。（６）は
冷却槽（１）と真空発生ユニット（３）とを接続する排
気管で、その途中に逆止弁（７）と吸引調整弁（８）と
を介在させている。逆止弁（７）は真空発生ユニット
（３）を停止させた後、負圧である冷却槽（１）内に水
等を逆流させないようにする。吸引調整弁（８）は開閉
度を変化することにより、真空発生ユニット（３）の冷
却槽（１）内の空気の吸引量を調整させて冷却槽（１）
内の減圧速度（圧力勾配）を制御する。（９）は冷却槽
（１）の内部に設けられた温度センサーで、冷却槽
（１）の内部に備えた容器（２）に収納される食品
（ａ）の温度を測定し、この測定値を温度圧力変換器
（10）を介して圧力調節器（11）に電気信号として出力
する。（12）は冷却槽（１）の内部に設けられた圧力セ
ンサーで、冷却槽（１）内の圧力を測定し、この測定値
を圧力調節器（11）に電気信号として出力する。圧力調
節器（11）は温度センサー（９）および圧力センサー
（12）からの電気信号により予め演算された食品（ａ）
の温度値における飽和圧力と冷却槽（１）内の圧力値を
比較し、その結果に基づいて吸引調整弁（８）の開閉度
を変化し、真空発生ユニット（３）の冷却槽（１）内の
空気の吸引量を調整させて冷却槽（１）内の圧力を予め
設定された食品（ａ）の温度値における飽和圧力になる
ように制御する。In FIG. 1, (1) is a cooling tank provided with a door (not shown) which can be opened and closed on the front or front and rear surfaces, and has a container (2) for storing food (a) therein. (3)
Is a vacuum generating unit that sucks air from inside the cooling tank (1), and is composed of a wet vacuum pump (5) using a water ejector (4), and a high-speed high vacuum degree can be obtained. (6) is an exhaust pipe connecting the cooling tank (1) and the vacuum generating unit (3), and a check valve (7) and a suction adjusting valve (8) are interposed in the exhaust pipe. After stopping the vacuum generating unit (3), the check valve (7) prevents water or the like from flowing back into the cooling tank (1) which is at a negative pressure. The suction adjusting valve (8) changes the degree of opening and closing, thereby adjusting the amount of air suction in the cooling tank (1) of the vacuum generating unit (3) to thereby control the cooling tank (1).
To control the pressure reduction rate (pressure gradient) in the inside. (9) is a temperature sensor provided inside the cooling bath (1), which measures the temperature of the food (a) stored in the container (2) provided inside the cooling bath (1), and measures the measured value. Is output as an electric signal to the pressure regulator (11) via the temperature-pressure converter (10). (12) is a pressure sensor provided inside the cooling tank (1), measures the pressure in the cooling tank (1), and outputs the measured value to the pressure regulator (11) as an electric signal. The pressure regulator (11) is a food (a) calculated in advance by electric signals from the temperature sensor (9) and the pressure sensor (12).
The saturation pressure at the temperature value is compared with the pressure value in the cooling tank (1), and based on the result, the opening / closing degree of the suction adjusting valve (8) is changed, and the cooling tank (1) of the vacuum generating unit (3) is changed. The pressure in the cooling bath (1) is controlled by adjusting the suction amount of the air in the container so that the pressure in the cooling bath (1) becomes a saturation pressure at a preset temperature value of the food (a).
【００１２】次に、突沸を起す食品を真空冷却する場合
の本発明の徐冷方法を図２を用いて説明する。図２は縦
軸に冷却槽（１）内の圧力をとり、横軸に食品（ａ）の
温度をとったもので、冷却槽（１）内の圧力と食品
（ａ）の温度の関係を示す。Next, the slow cooling method of the present invention in the case of vacuum cooling food that causes bumping will be described with reference to FIG. In FIG. 2, the vertical axis indicates the pressure in the cooling tank (1), and the horizontal axis indicates the temperature of the food (a). The relationship between the pressure in the cooling tank (1) and the temperature of the food (a) is shown. Show.
【００１３】先ず、高温の食品（ａ）を冷却槽（１）の
内部に備えた容器（２）に収納する。このとき、食品
（ａ）は温度T1の状態で、大気圧の冷却槽（１）内に収
容される。この状態で、吸引調整弁（８）を全開のま
ま、真空発生ユニット（３）を起動させて冷却槽（１）
内の空気を吸引排気すると、冷却槽（１）内の圧力は図
２の実線（イ）のように急激に減圧される。この際、温
度センサー（９）により冷却槽（１）の内部に備えた容
器（２）に収納される食品（ａ）の温度を測定するとと
もに、圧力センサー（12）により冷却槽（１）内の圧力
を測定し、圧力調節器（11）で予め演算された食品
（ａ）の温度値における飽和圧力と冷却槽（１）内の圧
力値を比較する。そして、冷却槽（１）内の圧力が食品
（ａ）の温度T1に対する飽和圧力P1になると、圧力調節
器（11）により吸引調整弁（８）の開閉度を変化させて
真空発生ユニット（３）の冷却槽（１）内の空気の吸引
量を調整し、冷却槽（１）内の圧力が予め設定された食
品（ａ）の温度値における飽和圧力になるように制御す
る。これにより、冷却槽（１）内の圧力は食品（ａ）の
飽和圧力線に沿うように、即ち、図２の実線（ロ）のよ
うに徐々に減圧されるから、食品（ａ）は突沸を起さず
に徐冷される。そして、冷却槽（１）内の圧力が食品
（ａ）の冷却温度T2に対する飽和圧力P2まで減圧される
ことにより、食品（ａ）の冷却は終了する。但し、図２
中の点線（ハ）は、突沸を起す食品を真空冷却する場合
の従来の徐冷方法による食品（ａ）の温度と冷却槽
（１）内の圧力の関係を示すもので、本発明の徐冷方法
は従来の徐冷方法より食品（ａ）を所定の冷却温度T2に
短時間で冷却できる。First, a high-temperature food (a) is stored in a container (2) provided inside a cooling tank (1). At this time, the food (a) is stored in the cooling tank (1) at atmospheric pressure at the temperature T1. In this state, with the suction adjustment valve (8) fully open, the vacuum generation unit (3) is started to activate the cooling tank (1).
When the air inside is sucked and exhausted, the pressure in the cooling tank (1) is rapidly reduced as shown by the solid line (A) in FIG. At this time, the temperature of the food (a) stored in the container (2) provided inside the cooling tank (1) is measured by the temperature sensor (9), and the inside of the cooling tank (1) is measured by the pressure sensor (12). Is measured, and the saturation pressure at the temperature value of the food (a) calculated in advance by the pressure controller (11) is compared with the pressure value in the cooling tank (1). When the pressure in the cooling tank (1) reaches the saturation pressure P1 with respect to the temperature T1 of the food (a), the opening / closing degree of the suction adjustment valve (8) is changed by the pressure controller (11) to change the vacuum generation unit (3). 2) The suction amount of the air in the cooling tank (1) is adjusted so that the pressure in the cooling tank (1) is controlled to a saturation pressure at a preset temperature value of the food (a). Thereby, the pressure in the cooling bath (1) is gradually reduced along the saturation pressure line of the food (a), that is, as shown by the solid line (b) in FIG. It is slowly cooled without causing. Then, when the pressure in the cooling tank (1) is reduced to a saturation pressure P2 with respect to the cooling temperature T2 of the food (a), the cooling of the food (a) is completed. However, FIG.
The middle dotted line (c) shows the relationship between the temperature of the food (a) and the pressure in the cooling tank (1) according to the conventional slow cooling method in the case of vacuum cooling the food causing bumping. The cooling method can cool the food (a) to the predetermined cooling temperature T2 in a shorter time than the conventional slow cooling method.
【００１４】このようにして冷却が終了すると、冷却槽
（１）内から食品（ａ）を取り出し、次の食品（ａ）が
冷却槽（１）内に収容され、以後、上記した真空冷却が
繰り返される。When the cooling is completed in this manner, the food (a) is taken out of the cooling tank (1), the next food (a) is stored in the cooling tank (1), and thereafter, the above-mentioned vacuum cooling is performed. Repeated.
【００１５】図３は本発明を実施する装置の他の例を示
す概略図であり、図１と相違する点は吸引調整弁（８）
に代って排気管（４）に先端が大気に開放する給気管
（13）を接続し、この給気管（13）に圧力調節器（11）
によって開閉度が変化される給気調整弁（14）を介在さ
せた点のみであり、その他は図１と同様である。これに
よれば、冷却槽（１）内の圧力が食品（ａ）の温度T1に
対する飽和圧力P1になるまで給気調整弁（14）は全閉の
ままであり、冷却槽（１）内の圧力が食品（ａ）の温度
T1に対する飽和圧力P1になると、圧力調節器（11）で給
気調整弁（14）を開かせて排気管（４）に給気管（13）
から給気が行われるため、冷却槽（１）内の圧力は徐々
に減圧され、食品（ａ）は徐冷される。この際、給気調
整弁（14）の開閉変化により、排気管（４）への給気量
を調整させて冷却槽（１）内の圧力を予め設定された食
品（ａ）の温度値における飽和圧力になるように制御さ
せるようになっている。FIG. 3 is a schematic view showing another example of the apparatus for carrying out the present invention. The difference from FIG. 1 is that the suction adjusting valve (8) is used.
In place of this, an air supply pipe (13) whose end is open to the atmosphere is connected to the exhaust pipe (4), and a pressure regulator (11) is connected to this air supply pipe (13).
Only the point of interposing an air supply adjusting valve (14) whose opening degree is changed by the interposition is provided, and the other points are the same as those in FIG. According to this, the air supply regulating valve (14) remains fully closed until the pressure in the cooling tank (1) becomes the saturation pressure P1 with respect to the temperature T1 of the food (a), and the cooling tank (1) Pressure is the temperature of food (a)
When the saturation pressure P1 with respect to T1 is reached, the air supply adjustment valve (14) is opened by the pressure regulator (11) and the air supply pipe (13) is connected to the exhaust pipe (4).
, The pressure in the cooling tank (1) is gradually reduced, and the food (a) is gradually cooled. At this time, the opening / closing change of the air supply adjusting valve (14) adjusts the amount of air supplied to the exhaust pipe (4) to adjust the pressure in the cooling tank (1) to a predetermined temperature value of the food (a). The pressure is controlled so as to be a saturation pressure.
【００１６】尚、上記実施例においては、突沸を起す食
品について述べているが、本発明は食品以外の突沸を起
す被冷却物にも適用し得ることは言うまでもない。Although the above embodiments have been described with respect to foods that cause bumping, it goes without saying that the present invention can be applied to objects to be cooled other than foods that cause bumping.
【００１７】[0017]
【発明の効果】以上説明したように、本発明において
は、突沸を起す被冷却物を冷却槽内に収容して真空冷却
する場合、その被冷却物の温度および冷却槽内の圧力を
測定し、冷却槽内の圧力を被冷却物の初期温度に対する
飽和圧力になるまで急激に減圧し、飽和圧力になると被
冷却物の飽和圧力線に沿うように冷却槽内の圧力を徐々
に減圧するから、短時間で被冷却物を突沸を起さずに冷
却させることができ、生産性の向上を図るという利点が
ある。As described above, in the present invention, when the object to be bumped is accommodated in the cooling bath and vacuum cooled, the temperature of the object to be cooled and the pressure in the cooling bath are measured. Since the pressure in the cooling tank is rapidly reduced until it reaches a saturation pressure with respect to the initial temperature of the object to be cooled, and when the saturation pressure is reached, the pressure in the cooling tank is gradually reduced along the saturation pressure line of the object to be cooled. The object to be cooled can be cooled in a short time without causing bumping, and there is an advantage that productivity is improved.
【図１】本発明を実施する装置の一例を示す概略図であ
る。FIG. 1 is a schematic diagram showing an example of an apparatus for implementing the present invention.
【図２】本発明による徐冷方法を説明する被冷却物の温
度と冷却槽内の圧力との関係を示すグラフである。FIG. 2 is a graph illustrating the relationship between the temperature of the object to be cooled and the pressure in the cooling tank for explaining the slow cooling method according to the present invention.
【図３】本発明を実施する装置の他の例を示す概略図で
ある。FIG. 3 is a schematic view showing another example of an apparatus for implementing the present invention.
ａ 食品 １ 冷却槽 ２ 容器 ３ 真空発生ユニット ４ 水エジェクター ５ 湿式真空ポンプ ６ 排気管 ７ 逆止弁 ８ 吸引調整弁 ９ 温度センサー 10 温度圧力変換器 11 圧力調節器 12 圧力センサー 13 給気管 14 給気調整弁 a Food 1 Cooling tank 2 Container 3 Vacuum generation unit 4 Water ejector 5 Wet vacuum pump 6 Exhaust pipe 7 Check valve 8 Suction adjustment valve 9 Temperature sensor 10 Temperature / pressure converter 11 Pressure regulator 12 Pressure sensor 13 Supply pipe 14 Air supply Regulating valve
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F25D 7/00 A23L 3/36 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) F25D 7/00 A23L 3/36
Claims (3)
引排気して当該被冷却物を真空冷却する際に、冷却槽内
の圧力を被冷却物の初期温度に対する飽和圧力までは急
速に、その後は徐々に減圧させる真空冷却装置におい
て、 上記冷却槽内の圧力を徐々に減圧する際に、被冷却物の
温度および冷却槽内の圧力を測定し、その測定値によっ
て冷却槽内を被冷却物の飽和圧力に制御させることによ
り、冷却槽内の圧力を被冷却物の飽和圧力線に沿うよう
に徐々に減圧させるようにしたことを特徴とする真空冷
却装置における徐冷方法。1. When the air in a cooling tank containing an object to be cooled is suctioned and exhausted to vacuum-cool the object to be cooled, the pressure in the cooling tank is rapidly increased to a saturation pressure with respect to the initial temperature of the object to be cooled. Then, in a vacuum cooling device that gradually reduces the pressure, when gradually reducing the pressure in the cooling tank, the temperature of the object to be cooled and the pressure in the cooling tank are measured, and the measured value is used to measure the inside of the cooling tank. A gradual cooling method in a vacuum cooling device, wherein the pressure in a cooling tank is gradually reduced along the saturation pressure line of the object to be cooled by controlling the saturation pressure of the object to be cooled.
部から空気を吸引排気して減圧させる真空発生ユニット
との間に吸引調整弁を設け、この吸引調整弁で上記真空
発生ユニットによる上記冷却槽内からの空気の吸引量を
調整させて当該冷却槽内の圧力を被冷却物の初期温度に
対する飽和圧力までは急速に、その後は徐々に減圧させ
る真空冷却装置における徐冷装置において、 上記冷却槽内に被冷却物の温度を測定させる温度センサ
ーおよび当該冷却槽内の圧力を測定させる圧力センサー
を設け、かつ、上記吸引調整弁と上記温度センサーおよ
び圧力センサーとの間に、当該吸引調整弁の開閉度を変
化させて冷却槽内の圧力を調節させる圧力調節器を設
け、上記冷却槽内の圧力を徐々に減圧する際に、上記温
度センサーおよび圧力センサーの測定値によって上記圧
力調節器で上記吸引調整弁の開閉度を変化させて冷却槽
内を被冷却物の飽和圧力に制御させることにより、冷却
槽内の圧力を被冷却物の飽和圧力線に沿うように徐々に
冷却させるようにしたことを特徴とする真空冷却装置に
おける徐冷装置。2. A suction adjusting valve is provided between a cooling tank for accommodating an object to be cooled and a vacuum generating unit for sucking and exhausting air from the inside of the cooling tank and reducing the pressure. The gradual cooling device in the vacuum cooling device in which the suction amount of air from the cooling tank is adjusted to rapidly reduce the pressure in the cooling tank to a saturation pressure with respect to the initial temperature of the object to be cooled, and thereafter gradually reduce the pressure, A temperature sensor for measuring the temperature of the object to be cooled in the cooling tank and a pressure sensor for measuring the pressure in the cooling tank are provided, and the suction adjustment is performed between the suction adjustment valve and the temperature sensor and the pressure sensor. A pressure regulator for adjusting the pressure in the cooling tank by changing the opening / closing degree of the valve is provided. When the pressure in the cooling tank is gradually reduced, the temperature sensor and the pressure sensor are used. By changing the degree of opening and closing of the suction adjustment valve with the pressure regulator according to the measured value and controlling the inside of the cooling tank to the saturation pressure of the object to be cooled, the pressure in the cooling tank follows the saturation pressure line of the object to be cooled. A slow cooling device in a vacuum cooling device characterized by gradually cooling as described above.
部から空気を吸引排気して減圧させる真空発生ユニット
との間に大気に開放させるように吸気管を設けるととも
に、この吸気管に吸気調整弁を設け、この吸引調整弁で
上記冷却槽内への空気の供給量を調整させて当該冷却槽
内の圧力を被冷却物の初期温度に対する飽和圧力までは
急速に、その後は徐々に減圧させる真空冷却装置におけ
る徐冷装置において、 上記冷却槽内に被冷却物の温度を測定させる温度センサ
ーおよび当該冷却槽内の圧力を測定させる圧力センサー
を設け、かつ、上記吸気調整弁と上記温度センサーおよ
び圧力センサーとの間に、当該吸気調整弁の開閉度を変
化させて冷却槽内の圧力を調節させる圧力調節器を設
け、上記冷却槽内の圧力を徐々に減圧する際に、上記温
度センサーおよび圧力センサーの測定値によって上記圧
力調節器で上記吸気調整弁の開閉度を変化させて冷却槽
内を被冷却物の飽和圧力に制御させることにより、冷却
槽内の圧力を被冷却物の飽和圧力線に沿うように徐々に
冷却させるようにしたことを特徴とする真空冷却装置に
おける徐冷装置。3. An intake pipe is provided between a cooling tank for accommodating an object to be cooled and a vacuum generation unit for sucking and exhausting air from the inside thereof and depressurizing the air to be released to the atmosphere. An adjusting valve is provided, and the supply amount of air into the cooling tank is adjusted by the suction adjusting valve to rapidly reduce the pressure in the cooling tank to a saturation pressure with respect to the initial temperature of the object to be cooled, and then gradually reduce the pressure. A gradual cooling device in a vacuum cooling device, wherein a temperature sensor for measuring a temperature of an object to be cooled and a pressure sensor for measuring a pressure in the cooling bath are provided in the cooling bath, and the intake adjustment valve and the temperature sensor are provided. A pressure regulator for adjusting the pressure in the cooling tub by changing the degree of opening and closing of the intake control valve, and when gradually reducing the pressure in the cooling tub, The pressure in the cooling tub is controlled to the saturation pressure of the object to be cooled by changing the degree of opening and closing of the intake adjusting valve by the pressure regulator according to the measurement values of the temperature sensor and the pressure sensor, thereby controlling the pressure in the cooling tank to the object to be cooled. Characterized in that the cooling is performed gradually along the saturation pressure line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06356593A JP3173535B2 (en) | 1993-03-23 | 1993-03-23 | Slow cooling method and device in vacuum cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06356593A JP3173535B2 (en) | 1993-03-23 | 1993-03-23 | Slow cooling method and device in vacuum cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06273027A JPH06273027A (en) | 1994-09-30 |
| JP3173535B2 true JP3173535B2 (en) | 2001-06-04 |
Family
ID=13232894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06356593A Expired - Fee Related JP3173535B2 (en) | 1993-03-23 | 1993-03-23 | Slow cooling method and device in vacuum cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3173535B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014025623A (en) * | 2012-07-25 | 2014-02-06 | Samson Co Ltd | Vacuum cooling device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4716257B2 (en) * | 2005-11-17 | 2011-07-06 | 三浦工業株式会社 | Steam cooking equipment |
| JP4821565B2 (en) * | 2006-11-01 | 2011-11-24 | パナソニック株式会社 | refrigerator |
| JP5268015B2 (en) * | 2006-12-21 | 2013-08-21 | 三浦工業株式会社 | Cooling system |
| JP5251557B2 (en) * | 2009-02-03 | 2013-07-31 | 三浦工業株式会社 | Cooling device and cooling method |
| JP5898967B2 (en) * | 2012-01-17 | 2016-04-06 | 株式会社サムソン | Vacuum cooling device |
| JP6601275B2 (en) * | 2016-03-08 | 2019-11-06 | 三浦工業株式会社 | Vacuum cooling device |
-
1993
- 1993-03-23 JP JP06356593A patent/JP3173535B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014025623A (en) * | 2012-07-25 | 2014-02-06 | Samson Co Ltd | Vacuum cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06273027A (en) | 1994-09-30 |
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