JP4600815B2 - Operation method of pressure vessel equipped with heating means - Google Patents

Operation method of pressure vessel equipped with heating means Download PDF

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JP4600815B2
JP4600815B2 JP2005053131A JP2005053131A JP4600815B2 JP 4600815 B2 JP4600815 B2 JP 4600815B2 JP 2005053131 A JP2005053131 A JP 2005053131A JP 2005053131 A JP2005053131 A JP 2005053131A JP 4600815 B2 JP4600815 B2 JP 4600815B2
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pressure
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heating means
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哲志 中井
裕一 高橋
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Miura Co Ltd
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Description

本発明は、加熱手段を備えた耐圧容器の運転方法に関する。   The present invention relates to a method for operating a pressure vessel provided with heating means.

従来より、加熱手段を備えた耐圧容器として、電気ヒータを用い、耐圧容器内の液体を加熱するようにした構造のものや、加熱用の蒸気を用い、耐圧容器を内缶と外缶の二重構造として、内缶と外缶の間へ蒸気を導入して耐圧容器内の液体を加熱するようにした構造のものが知られており、洗浄装置や除菌装置等に広く使用されている（例えば、特許文献１，２参照。）。 Conventionally, as a pressure vessel equipped with a heating means, an electric heater is used to heat the liquid in the pressure vessel, or heating steam is used, and the pressure vessel is divided into an inner can and an outer can. As a heavy structure, a structure in which steam is introduced between the inner can and the outer can to heat the liquid in the pressure resistant container is known, and is widely used in cleaning devices and disinfecting devices. (For example, refer to Patent Documents 1 and 2.)

かかる加熱手段を備えた耐圧容器による運転は、一般に、電気ヒータや蒸気により耐圧容器内の液体を耐圧容器の壁面から加熱し、そして、加熱する液体の温度制御は電気ヒータや蒸気を調整することにより行っていた。
特開２００１−７０４０９号公報 特開２００３−５３３２６号公報 The operation with a pressure vessel provided with such a heating means generally heats the liquid in the pressure vessel from the wall surface of the pressure vessel with an electric heater or steam, and the temperature control of the liquid to be heated is to adjust the electric heater or the vapor. Had gone by.
JP 2001-70409 A JP 2003-53326 A

しかしながら、前記ような構造の加熱手段を備えた耐圧容器における従来の運転では、次のような問題があった。即ち、電気ヒータや蒸気により耐圧容器内の液体を耐圧容器の壁面から加熱する場合、液体の自然循環により加熱するので、加熱に時間がかかり、また、内部に温度ムラが発生し均一な加熱が得難い。また、加熱する液体の温度制御に際し、特に、加熱手段として蒸気を用い、耐圧容器を内缶と外缶の二重構造として、内缶と外缶の間へ蒸気を導入して耐圧容器内の液体を加熱するようにした構造である場合、内缶と外缶の間の熱容量が大きいとオーバーシュートして、液体が目標の温度より上昇してしまうことがあった。   However, the conventional operation in the pressure vessel provided with the heating means having the above structure has the following problems. That is, when the liquid in the pressure vessel is heated from the wall surface of the pressure vessel by an electric heater or steam, the liquid is heated by natural circulation, so that it takes time to heat, and temperature unevenness occurs in the inside, resulting in uniform heating. It is hard to get. In addition, when controlling the temperature of the liquid to be heated, in particular, steam is used as a heating means, and the pressure-resistant container has a double structure of an inner can and an outer can. In the case of a structure in which the liquid is heated, if the heat capacity between the inner can and the outer can is large, overshoot may occur and the liquid may rise above the target temperature.

本発明の目的は、液体を短時間で且つ均一に加熱し、また、液体を目標温度以上に上昇することを防止できるようにした加熱手段を備えた耐圧容器の運転方法を提供することにある。   An object of the present invention is to provide a method of operating a pressure vessel provided with heating means that heats a liquid uniformly in a short time and prevents the liquid from rising above a target temperature. .

上記の目的を達成するために請求項１に記載の発明は、内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、前記内缶内の液体が沸騰するように、前記液体の温度に対する飽和圧力近辺の圧力になるよう前記真空ポンプを作動させながら前記内缶の減圧を行わせて、前記内缶内の液体の沸騰状態を維持するようにして加熱することを特徴とする。 In order to achieve the above object, the invention according to claim 1 is an operation of a pressure vessel having an inner can and an outer can and provided with a heating means having a steam introduction space between the inner can and the outer can. A method comprising a temperature sensor for measuring a temperature in the inner can, a pressure sensor for measuring a pressure in the inner can, and a vacuum pump for reducing the pressure in the inner can, and supplying the inner can During the process of heating the liquid, the temperature of the liquid in the inner can is measured, and the vacuum pump is operated so that the liquid in the inner can reaches a pressure near the saturation pressure with respect to the temperature of the liquid so that it boils. The inner can is depressurized while being heated, and the liquid in the inner can is heated to maintain the boiling state.

このようにすると、加熱手段と液体との間の熱伝達率が高まり加熱速度が促進されるとともに、液体の沸騰により液体内に泡が発生し、この泡の発生が液体を攪拌する作用となって、液体の均一な加熱が得られるので、液体の沸騰状態を維持するようにして加熱することにより、液体を短時間で均一に加熱することができる。   In this way, the heat transfer rate between the heating means and the liquid is increased and the heating rate is promoted, and bubbles are generated in the liquid due to the boiling of the liquid, and the generation of the bubbles serves to stir the liquid. Thus, uniform heating of the liquid can be obtained, so that the liquid can be uniformly heated in a short time by heating the liquid so as to maintain the boiling state.

請求項２に記載の発明は、内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、該液体温度が目標温度に達した時点で、前記内缶内の液体が沸騰するように、前記真空ポンプを作動させながら前記内缶内の圧力を前記目標温度に対する飽和圧力に調整することを特徴とする。 The invention according to claim 2 is an operation method of a pressure vessel having an inner can and an outer can, and having a heating means having a steam introduction space between the inner can and the outer can , the inner can In the process of heating the liquid supplied into the inner can, comprising: a temperature sensor that measures the temperature inside; a pressure sensor that measures the pressure in the inner can; and a vacuum pump that depressurizes the inner can. The temperature of the liquid in the inner can is measured, and when the liquid temperature reaches the target temperature, the pressure in the inner can is adjusted while operating the vacuum pump so that the liquid in the inner can boils. The saturation pressure is adjusted to the target temperature.

このようにすると、液体温度が目標温度で沸騰することになり、液体温度は目標温度以上に上昇しない。   If it does in this way, liquid temperature will boil at target temperature, and liquid temperature will not rise more than target temperature.

請求項３に記載の発明は、内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、前記内缶内の液体が沸騰するように、前記液体の温度に対する飽和圧力近辺の圧力になるよう前記真空ポンプを作動させながら前記内缶の減圧を行わせて、前記内缶内の液体の沸騰状態を維持するようにして加熱し、該液体温度が目標温度に達した時点で、前記内缶内の液体が沸騰するように、前記真空ポンプを作動させながら前記内缶内の圧力を前記目標温度に対する飽和圧力に調整することを特徴とする。 The invention according to claim 3 is an operation method of a pressure vessel having an inner can and an outer can, and comprising a heating means having a steam introduction space between the inner can and the outer can , the inner can In the process of heating the liquid supplied into the inner can, comprising: a temperature sensor that measures the temperature inside; a pressure sensor that measures the pressure in the inner can; and a vacuum pump that depressurizes the inner can. The temperature of the liquid in the inner can is measured, and the pressure in the inner can is reduced while operating the vacuum pump so that the liquid in the inner can boils to a pressure near the saturation pressure with respect to the temperature of the liquid. The vacuum pump is heated so as to maintain the boiling state of the liquid in the inner can, and the liquid in the inner can is boiled when the liquid temperature reaches a target temperature. adjusting the pressure in said canister to the saturation pressure for the target temperature while operating And wherein the Rukoto.

このようにすると、加熱手段と液体との間の熱伝達率が高まり加熱速度が促進されるとともに、液体の沸騰により液体内に泡が発生し、この泡の発生が液体を攪拌する作用となって、液体の均一な加熱が得られるので、液体の沸騰状態を維持するようにして加熱することにより、液体を短時間で均一に加熱することができ、そして、液体温度が目標温度に達すると沸騰することになり、液体温度は目標温度以上に上昇しない。   In this way, the heat transfer rate between the heating means and the liquid is increased and the heating rate is promoted, and bubbles are generated in the liquid due to the boiling of the liquid, and the generation of the bubbles serves to stir the liquid. Thus, the liquid can be heated uniformly so that the liquid can be heated uniformly in a short time by maintaining the liquid in a boiling state, and when the liquid temperature reaches the target temperature. The liquid temperature will not rise above the target temperature.

以上のように、本発明に係る加熱手段を備えた耐圧容器の運転方法によれば、内缶内へ供給した液体の加熱の過程で、内缶内の液体の温度を測定し、内缶内の液体が沸騰するように、液体の温度に対する飽和圧力近辺の圧力になるよう真空ポンプを作動させながら内缶の減圧を行わせて、内缶内の液体の沸騰状態を維持するようにして加熱することにより、液体を短時間で均一に加熱することができる。 As described above, according to the operation method of the pressure vessel provided with the heating means according to the present invention, in the course of heating the liquid supplied into the inner can, the temperature of the liquid in the inner can is measured, and the inner can The inner can is depressurized while operating the vacuum pump so that the pressure is close to the saturation pressure with respect to the temperature of the liquid so that the liquid of the liquid is boiled. By doing so, the liquid can be heated uniformly in a short time.

また、内缶内の液体の温度を測定し、該液体温度が目標温度に達した時点で、内缶内の液体が沸騰するように、真空ポンプを作動させながら内缶内の圧力を前記目標温度に対する飽和圧力に調整することにより、液体温度が目標温度で沸騰することになり、これにより液体温度が目標温度以上に上昇することを防止することができる。 Further, the temperature of the liquid in the inner can is measured, and when the liquid temperature reaches the target temperature, the pressure in the inner can is adjusted while operating the vacuum pump so that the liquid in the inner can boils. By adjusting to the saturation pressure with respect to the temperature, the liquid temperature will boil at the target temperature, thereby preventing the liquid temperature from rising above the target temperature.

以下、本発明に係る加熱手段を備えた耐圧容器の運転方法を実施するための最良の形態を、図面に示す加熱手段を備えた耐圧容器の一例を基に説明する。   Hereinafter, the best mode for carrying out a method of operating a pressure vessel provided with heating means according to the present invention will be described based on an example of a pressure vessel provided with heating means shown in the drawings.

図１に示す加熱手段を備えた耐圧容器１は、内缶２と外缶３の二重構造となっており、内缶２と外缶３の間に蒸気導入空間４が形成されている。前記耐圧容器１には、外部から供給される加熱用の蒸気を蒸気導入空間４へ導入する蒸気導入管５と、蒸気導入空間４に導入された蒸気を排出する蒸気排出管６と、内缶２内へ液体を供給する液体供給管７と、内缶２内へ供給された液体を排出する液体排出管８が設けられている。また、耐圧容器１は、内缶２内の液体の温度を測定する温度センサ９と、内缶２内の圧力を測定する圧力センサ１０と、内缶２内を減圧する真空ポンプ１１とを備えている。   The pressure vessel 1 provided with the heating means shown in FIG. 1 has a double structure of an inner can 2 and an outer can 3, and a steam introduction space 4 is formed between the inner can 2 and the outer can 3. The pressure vessel 1 includes a steam introduction pipe 5 for introducing heating steam supplied from the outside into the steam introduction space 4, a steam discharge pipe 6 for discharging the steam introduced into the steam introduction space 4, and an inner can A liquid supply pipe 7 for supplying the liquid into the liquid 2 and a liquid discharge pipe 8 for discharging the liquid supplied into the inner can 2 are provided. The pressure vessel 1 also includes a temperature sensor 9 that measures the temperature of the liquid in the inner can 2, a pressure sensor 10 that measures the pressure in the inner can 2, and a vacuum pump 11 that depressurizes the inner can 2. ing.

前記の加熱手段を備えた耐圧容器１により、先ず、本発明に係る加熱手段を備えた耐圧容器１の運転方法の第１例を説明する。本例では、加熱運転時に、耐圧容器１内の液体の温度を測定し、その温度に対する飽和圧力近辺に耐圧容器１内の圧力を調整することにより、耐圧容器１内の液体を沸騰（飽和沸騰、サブクール沸騰のいずれも含む）させ、この液体の沸騰状態を維持するようにして加熱する。   First, a first example of the operation method of the pressure vessel 1 provided with the heating means according to the present invention will be described using the pressure vessel 1 provided with the heating means. In this example, during the heating operation, the temperature of the liquid in the pressure-resistant vessel 1 is measured, and the pressure in the pressure-resistant vessel 1 is adjusted to near the saturation pressure with respect to that temperature, thereby boiling the liquid in the pressure-resistant vessel 1 (saturated boiling). , Including any subcooled boiling) and heating to maintain the boiling state of this liquid.

更に詳細には、液体供給管７から耐圧容器１の内缶２内へ液体を供給し、加熱用の蒸気を蒸気導入管５から蒸気導入空間４へ導入し、蒸気により内缶２内の液体を加熱する。そして、この加熱の過程で、前記液体の温度を温度センサ９で測定し、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、前記測定した温度に対する飽和圧力近辺に内缶２内の圧力を調整し、内缶２内の液体を沸騰させる。そして、液体の温度が上昇するに従い、内缶２内の圧力を当該液体の測定温度に対する飽和圧力近辺に調整し、液体の沸騰状態を維持するようにして加熱する。   More specifically, the liquid is supplied from the liquid supply pipe 7 into the inner can 2 of the pressure-resistant vessel 1, and steam for heating is introduced from the steam introduction pipe 5 into the steam introduction space 4, and the liquid in the inner can 2 is formed by the steam. Heat. In the course of this heating, the temperature of the liquid is measured by the temperature sensor 9 and the pressure in the inner can 2 is measured by the pressure sensor 10 while the vacuum pump 11 is driven to depressurize the inner can 2. The pressure in the inner can 2 is adjusted around the saturation pressure with respect to the measured temperature, and the liquid in the inner can 2 is boiled. Then, as the temperature of the liquid rises, the pressure in the inner can 2 is adjusted to around the saturation pressure with respect to the measurement temperature of the liquid, and the liquid is heated so as to maintain the boiling state of the liquid.

このようにすると、加熱手段と液体との間の熱伝達率が高まり加熱速度が促進されるとともに、液体の沸騰により液体内に泡が発生し、この泡の発生が液体を攪拌する作用となって、液体の均一な加熱が得られる。そして、前記液体の沸騰状態を維持するようにして加熱することにより、液体を短時間で均一に加熱することができる。   In this way, the heat transfer rate between the heating means and the liquid is increased and the heating rate is promoted, and bubbles are generated in the liquid due to the boiling of the liquid, and the generation of the bubbles serves to stir the liquid. Thus, uniform heating of the liquid can be obtained. And it can heat a liquid uniformly in a short time by heating so that the boiling state of the said liquid may be maintained.

次に、本発明に係る加熱手段を備えた耐圧容器１の運転方法の第２例を説明する。本例では、加熱運転時に、耐圧容器１内の液体温度を測定し、該液体温度が目標温度に達した時点で、耐圧容器１内の圧力を前記目標温度に対する飽和圧力に調整する。   Next, the 2nd example of the operating method of the pressure vessel 1 provided with the heating means which concerns on this invention is demonstrated. In this example, during the heating operation, the liquid temperature in the pressure resistant container 1 is measured, and when the liquid temperature reaches the target temperature, the pressure in the pressure resistant container 1 is adjusted to the saturation pressure with respect to the target temperature.

更に詳細には、液体供給管７から耐圧容器１の内缶２内へ液体を供給し、加熱用の蒸気を蒸気導入管５から蒸気導入空間４へ導入し、蒸気により内缶２内の液体を加熱する。そして、この加熱の過程で、前記液体の温度を温度センサ９で測定し、前記液体の温度が予め設定してある目標温度に達した時点で、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、内缶２内の圧力を前記目標温度に対する飽和圧力に調整する。   More specifically, the liquid is supplied from the liquid supply pipe 7 into the inner can 2 of the pressure-resistant vessel 1, and steam for heating is introduced from the steam introduction pipe 5 into the steam introduction space 4, and the liquid in the inner can 2 is formed by the steam. Heat. In the course of this heating, the temperature of the liquid is measured by the temperature sensor 9, and when the temperature of the liquid reaches a preset target temperature, the pressure in the inner can 2 is measured by the pressure sensor 10. While driving the vacuum pump 11, the inner can 2 is depressurized, and the pressure in the inner can 2 is adjusted to the saturation pressure with respect to the target temperature.

このようにすると、液体の温度が目標温度で沸騰することになり、液体温度は目標温度以上に上昇しない。   If it does in this way, the temperature of the liquid will boil at the target temperature, and the liquid temperature will not rise above the target temperature.

次に、本発明に係る加熱手段を備えた耐圧容器１の運転方法の第３例を説明する。本例では、加熱運転時に、耐圧容器１内の液体の温度を測定し、その温度に対する飽和圧力近辺に耐圧容器１内の圧力を調整することにより、耐圧容器１内の液体を沸騰させ、この液体の沸騰状態を維持するようにして加熱し、該液体温度が目標温度に達した時点で、耐圧容器１内の圧力を前記目標温度に対する飽和圧力に調整することを特徴する。   Next, the 3rd example of the operating method of the pressure vessel 1 provided with the heating means which concerns on this invention is demonstrated. In this example, during the heating operation, the temperature of the liquid in the pressure vessel 1 is measured, and the liquid in the pressure vessel 1 is boiled by adjusting the pressure in the pressure vessel 1 near the saturation pressure with respect to the temperature. Heating is performed so as to maintain the boiling state of the liquid, and when the liquid temperature reaches the target temperature, the pressure in the pressure-resistant vessel 1 is adjusted to a saturation pressure with respect to the target temperature.

更に詳細には、液体供給管７から耐圧容器１の内缶２内へ液体を供給し、加熱用の蒸気を蒸気導入管５から蒸気導入空間４へ導入し、蒸気により内缶２内の液体を加熱する。そして、この加熱の過程で、前記液体の温度を温度センサ９で測定し、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、前記測定した温度に対する飽和圧力近辺に内缶２内の圧力を調整し、内缶２内の液体を沸騰させる。そして、液体の温度が上昇するに従い、内缶２内の圧力を当該液体の測定温度に対する飽和圧力近辺に調整し、液体の沸騰状態を維持するようにして加熱する。そして、前記液体の温度が予め設定してある目標温度に達した時点で、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、内缶２内の圧力を前記目標温度に対する飽和圧力に調整する。   More specifically, the liquid is supplied from the liquid supply pipe 7 into the inner can 2 of the pressure-resistant vessel 1, and steam for heating is introduced from the steam introduction pipe 5 into the steam introduction space 4, and the liquid in the inner can 2 is formed by the steam. Heat. In the course of this heating, the temperature of the liquid is measured by the temperature sensor 9 and the pressure in the inner can 2 is measured by the pressure sensor 10 while the vacuum pump 11 is driven to depressurize the inner can 2. The pressure in the inner can 2 is adjusted around the saturation pressure with respect to the measured temperature, and the liquid in the inner can 2 is boiled. Then, as the temperature of the liquid rises, the pressure in the inner can 2 is adjusted to around the saturation pressure with respect to the measurement temperature of the liquid, and the liquid is heated so as to maintain the boiling state of the liquid. And, when the temperature of the liquid reaches a preset target temperature, the pressure in the inner can 2 is measured by the pressure sensor 10 to drive the vacuum pump 11 to depressurize the inner can 2, The pressure in the inner can 2 is adjusted to a saturation pressure with respect to the target temperature.

このようにすると、加熱手段と液体との間の熱伝達率が高まり加熱速度が促進されるとともに、液体の沸騰により液体内に泡が発生し、この泡の発生が液体を攪拌する作用となって、液体の均一な加熱が得られる。そして、前記液体の沸騰状態を維持するようにして加熱することにより、液体を短時間で均一に加熱することができ、そして、液体の温度が目標温度に達すると沸騰することになり、液体温度は目標温度以上に上昇しない。   In this way, the heat transfer rate between the heating means and the liquid is increased and the heating rate is promoted, and bubbles are generated in the liquid due to the boiling of the liquid, and the generation of the bubbles serves to stir the liquid. Thus, uniform heating of the liquid can be obtained. Then, by heating so as to maintain the boiling state of the liquid, the liquid can be heated uniformly in a short time, and when the temperature of the liquid reaches the target temperature, the liquid will boil. Does not rise above the target temperature.

次に、前記加熱手段を備えた耐圧容器が医療器具を洗浄除菌する洗浄除菌装置である場合の本発明の実施の一例を説明する。本例は前記実施の形態の第３例を実施している。   Next, an example of the implementation of the present invention will be described in the case where the pressure-resistant container provided with the heating means is a cleaning sterilization apparatus for cleaning and sterilizing medical instruments. This example implements the third example of the above embodiment.

先ず、血液等の付着したメス、鉗子等を耐圧容器１の内缶２内へ収容してから、耐圧容器１の内缶２内へ洗浄液を供給する。洗浄工程では、洗浄液の目標温度を設定しておく。この目標温度は、メス、鉗子等に付着している血液等が凝固しない温度、例えば、５０℃前後となっている。   First, a scalpel, forceps or the like to which blood or the like is attached is accommodated in the inner can 2 of the pressure resistant container 1, and then a cleaning liquid is supplied into the inner can 2 of the pressure resistant container 1. In the cleaning process, the target temperature of the cleaning liquid is set. This target temperature is a temperature at which blood or the like adhering to a knife, forceps or the like does not coagulate, for example, around 50 ° C.

次に、加熱用の蒸気を蒸気導入管５から蒸気導入空間４へ導入し、蒸気により内缶２内の洗浄液を加熱する。そして、この加熱の過程で、前記洗浄液の温度を温度センサ９で測定し、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、前記測定した温度に対する飽和圧力近辺に内缶２内の圧力を調整し、内缶２内の洗浄液を沸騰させる。そして、洗浄液の温度が上昇するに従い、内缶２内の圧力を当該洗浄液の測定温度に対する飽和圧力近辺に調整し、洗浄液の沸騰状態を維持するようにして加熱する。   Next, steam for heating is introduced from the steam introduction pipe 5 into the steam introduction space 4, and the cleaning liquid in the inner can 2 is heated by the steam. In the course of this heating, the temperature of the cleaning liquid is measured by the temperature sensor 9 and the pressure in the inner can 2 is measured by the pressure sensor 10 to drive the vacuum pump 11 to depressurize the inner can 2. The pressure in the inner can 2 is adjusted around the saturation pressure with respect to the measured temperature, and the cleaning liquid in the inner can 2 is boiled. Then, as the temperature of the cleaning liquid rises, the pressure in the inner can 2 is adjusted to the vicinity of the saturation pressure with respect to the measurement temperature of the cleaning liquid, and heated so as to maintain the boiling state of the cleaning liquid.

このようにすることにより、耐圧容器１の内缶２内で洗浄液が短時間で均一に加熱される。そして、前記洗浄液の温度が予め設定してある目標温度、即ち５０℃前後に達した時点で、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、内缶２内の圧力を前記目標温度に対する飽和圧力に調整する。   By doing so, the cleaning liquid is uniformly heated in the inner can 2 of the pressure vessel 1 in a short time. Then, when the temperature of the cleaning liquid reaches a preset target temperature, that is, around 50 ° C., the pressure in the inner can 2 is measured by the pressure sensor 10 to drive the vacuum pump 11 and the inner can 2 The pressure in the inner can 2 is adjusted to a saturation pressure with respect to the target temperature.

これにより、洗浄液の温度が目標温度に達すると沸騰することになり、洗浄液の温度は目標温度である５０℃前後以上に上昇せず、同温度に維持される。従って、洗浄液の熱によりメス、鉗子等に付着している血液等が凝固することが防止でき、優れた洗浄効果を発揮できる。   Thereby, when the temperature of the cleaning liquid reaches the target temperature, it will boil, and the temperature of the cleaning liquid does not rise above the target temperature of about 50 ° C. but is maintained at the same temperature. Therefore, the blood adhering to the scalpel, forceps and the like can be prevented from coagulating due to the heat of the cleaning liquid, and an excellent cleaning effect can be exhibited.

洗浄工程が終わったら、洗浄液の除菌工程へ移る。洗浄液の除菌工程では、洗浄工程における目標温度による制限を解き、除菌に要する目標温度（８０℃〜９３℃）を設定する。次に、洗浄液の温度を温度センサ９で測定し、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して、前記測定した温度に対する飽和圧力近辺に内缶２内の圧力を調整し、内缶２内の洗浄液を沸騰させ、そして、洗浄液の温度が上昇するに従い、内缶２内の圧力を当該洗浄液の測定温度に対する飽和圧力近辺に調整し、洗浄液の沸騰状態を維持するようにして加熱する。   When the cleaning process is completed, the process proceeds to the cleaning liquid disinfection process. In the cleaning liquid sterilization step, the restriction by the target temperature in the cleaning step is released, and the target temperature (80 ° C. to 93 ° C.) required for sterilization is set. Next, the temperature of the cleaning liquid is measured by the temperature sensor 9, and the vacuum pump 11 is driven while the pressure in the inner can 2 is measured by the pressure sensor 10. The pressure is adjusted, the cleaning liquid in the inner can 2 is boiled, and as the temperature of the cleaning liquid rises, the pressure in the inner can 2 is adjusted around the saturation pressure with respect to the measurement temperature of the cleaning liquid, and the boiling state of the cleaning liquid is changed. Heat to maintain.

このようにすることにより、耐圧容器１の内缶２内で洗浄液が短時間で均一に加熱される。そして、前記洗浄液の温度が予め設定してある目標温度、即ち８０℃〜９３℃に達した時点で、内缶２内の圧力を圧力センサ１０で測定しながら真空ポンプ１１を駆動して内缶２内を減圧して、内缶２内の圧力を前記目標温度に対する飽和圧力に調整する。これにより、洗浄液の温度が目標温度に達すると沸騰することになり、洗浄液の温度は目標温度である８０℃〜９３℃に維持され、確実な除菌が図れる。   By doing so, the cleaning liquid is uniformly heated in the inner can 2 of the pressure vessel 1 in a short time. Then, when the temperature of the cleaning liquid reaches a preset target temperature, that is, 80 ° C. to 93 ° C., the vacuum pump 11 is driven while measuring the pressure in the inner can 2 with the pressure sensor 10, and the inner can 2 is depressurized, and the pressure in the inner can 2 is adjusted to a saturation pressure with respect to the target temperature. Thereby, when the temperature of the cleaning liquid reaches the target temperature, it will boil, and the temperature of the cleaning liquid is maintained at the target temperature of 80 ° C. to 93 ° C., so that reliable sterilization can be achieved.

このように、本発明を医療器具を洗浄除菌する洗浄除菌装置に実施すると、洗浄液を洗浄温度、除菌温度に短時間で均一に加熱することができるので、医療器具の洗浄除菌作業時間の短縮化が図れ、また、洗浄工程で洗浄液の熱によりメス、鉗子等に付着している血液等が凝固することが防止できるので、優れた洗浄効果を図ることができる。   As described above, when the present invention is implemented in a cleaning and disinfecting apparatus that cleans and disinfects a medical instrument, the cleaning liquid can be uniformly heated to the cleaning temperature and the disinfecting temperature in a short time. The time can be shortened and the blood adhering to the scalpel, forceps and the like can be prevented from coagulating due to the heat of the cleaning liquid in the cleaning process, so that an excellent cleaning effect can be achieved.

本発明を実施する加熱手段を備えた耐圧容器の一例を示す概略構成図。The schematic block diagram which shows an example of the pressure vessel provided with the heating means which implements this invention.

符号の説明Explanation of symbols

１ 耐圧容器
２ 内缶
３ 外缶
４ 蒸気導入空間
５ 蒸気導入管
６ 蒸気排出管
７ 液体供給管
８ 液体排出管
９ 温度センサ
１０ 圧力センサ
１１ 真空ポンプ DESCRIPTION OF SYMBOLS 1 Pressure-resistant container 2 Inner can 3 Outer can 4 Steam introduction space 5 Steam introduction pipe 6 Steam discharge pipe 7 Liquid supply pipe 8 Liquid discharge pipe 9 Temperature sensor 10 Pressure sensor 11 Vacuum pump

Claims (3)

内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、
前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、前記内缶内の液体が沸騰するように、前記液体の温度に対する飽和圧力近辺の圧力になるよう前記真空ポンプを作動させながら前記内缶の減圧を行わせて、前記内缶内の液体の沸騰状態を維持するようにして加熱することを特徴とする加熱手段を備えた耐圧容器の運転方法。 It has an inner can and an outer can, and is a method for operating a pressure vessel provided with a heating means having a steam introduction space between the inner can and the outer can ,
A temperature sensor for measuring the temperature in the inner can, a pressure sensor for measuring the pressure in the inner can, and a vacuum pump for reducing the pressure in the inner can, and heating the liquid supplied into the inner can In the process, the temperature of the liquid in the inner can is measured, and the inner can is operated while the vacuum pump is operated so that the liquid in the inner can boils to a pressure close to a saturation pressure with respect to the temperature of the liquid. The operation method of the pressure vessel provided with the heating means is characterized in that heating is performed so as to maintain the boiling state of the liquid in the inner can by reducing the pressure . 内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、
前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、該液体温度が目標温度に達した時点で、前記内缶内の液体が沸騰するように、前記真空ポンプを作動させながら前記内缶内の圧力を前記目標温度に対する飽和圧力に調整することを特徴とする加熱手段を備えた耐圧容器の運転方法。 It has an inner can and an outer can, and is a method for operating a pressure vessel provided with a heating means having a steam introduction space between the inner can and the outer can ,
A temperature sensor for measuring the temperature in the inner can, a pressure sensor for measuring the pressure in the inner can, and a vacuum pump for reducing the pressure in the inner can, and heating the liquid supplied into the inner can In the process, the temperature of the liquid in the inner can is measured, and when the liquid temperature reaches the target temperature, the inside of the inner can is operated while the vacuum pump is operated so that the liquid in the inner can boils. The pressure of the pressure vessel is adjusted to a saturation pressure with respect to the target temperature. 内缶と外缶を有し、前記内缶と前記外缶の間を蒸気導入空間とする加熱手段を備えた耐圧容器の運転方法であって、
前記内缶内の温度を測定する温度センサと、前記内缶内の圧力を測定する圧力センサと、前記内缶内を減圧する真空ポンプとを備え、前記内缶内へ供給した液体の加熱の過程で、前記内缶内の液体の温度を測定し、前記内缶内の液体が沸騰するように、前記液体の温度に対する飽和圧力近辺の圧力になるよう前記真空ポンプを作動させながら前記内缶の減圧を行わせて、前記内缶内の液体の沸騰状態を維持するようにして加熱し、該液体温度が目標温度に達した時点で、前記内缶内の液体が沸騰するように、前記真空ポンプを作動させながら前記内缶内の圧力を前記目標温度に対する飽和圧力に調整することを特徴とする加熱手段を備えた耐圧容器の運転方法。 It has an inner can and an outer can, and is a method for operating a pressure vessel provided with a heating means having a steam introduction space between the inner can and the outer can ,
A temperature sensor for measuring the temperature in the inner can, a pressure sensor for measuring the pressure in the inner can, and a vacuum pump for reducing the pressure in the inner can, and heating the liquid supplied into the inner can In the process, the temperature of the liquid in the inner can is measured, and the inner can is operated while the vacuum pump is operated so that the liquid in the inner can boils to a pressure close to a saturation pressure with respect to the temperature of the liquid. The pressure in the inner can is heated so as to maintain the boiling state of the liquid in the inner can, and when the liquid temperature reaches a target temperature, the liquid in the inner can is boiled. A method for operating a pressure vessel equipped with heating means, wherein the pressure in the inner can is adjusted to a saturation pressure with respect to the target temperature while operating a vacuum pump .
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