JPH08143859A - Non-azeotropic mixed cooling medium and refrigeration - Google Patents
Non-azeotropic mixed cooling medium and refrigerationInfo
- Publication number
- JPH08143859A JPH08143859A JP6315625A JP31562594A JPH08143859A JP H08143859 A JPH08143859 A JP H08143859A JP 6315625 A JP6315625 A JP 6315625A JP 31562594 A JP31562594 A JP 31562594A JP H08143859 A JPH08143859 A JP H08143859A
- Authority
- JP
- Japan
- Prior art keywords
- azeotropic mixed
- cooling medium
- mixed refrigerant
- hfc125
- low temperature
- 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.)
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Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、１元超低温システム冷
凍機器に用いられる非共沸混合冷媒およびそれを用いる
冷凍方法に関し、更に詳しくは生体用冷蔵庫、血液保存
庫等の−２０〜−８５℃程度の低温を必要とする冷凍機
器に好適に用いられる非共沸混合冷媒およびそれを用い
る冷凍方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-azeotropic mixed refrigerant used in a refrigerating machine for a single-source ultra-low temperature system and a refrigerating method using the same, and more specifically to a living-body refrigerator, a blood storage, etc. The present invention relates to a non-azeotropic mixed refrigerant that is suitably used for refrigeration equipment that requires a low temperature of about ° C and a refrigeration method using the same.
【０００２】[0002]
【従来の技術・発明が解決しようとする課題】従来よ
り、生体用冷蔵庫、血液保存庫等の−２０〜−８５℃程
度の低温を必要とする冷凍機器には、図１のような１元
超低温システム冷凍回路が採用されている。そして、こ
のような１元超低温システムを採用する冷凍機器には、
例えばジクロロモノフルオロメタン（ＨＣＦＣ２１）・
モノブロモトリフルオロメタン（ハロン１３０１）・Ｆ
Ｃ１４の重量組成比０．４８８：０．５１２：０．３か
らなる非共沸混合冷媒が用いられてきた。2. Description of the Related Art Conventionally, a refrigerating device requiring a low temperature of about -20 to -85 ° C., such as a refrigerator for a living body and a blood storage, has been conventionally used as a unit as shown in FIG. An ultra low temperature system refrigeration circuit is used. And refrigeration equipment adopting such a 1-source ultra-low temperature system,
For example, dichloromonofluoromethane (HCFC21)
Monobromotrifluoromethane (Halon 1301) / F
A non-azeotropic mixed refrigerant having a C14 weight composition ratio of 0.488: 0.512: 0.3 has been used.
【０００３】しかしながら、近年フロンによる成層圏の
オゾン層破壊が地球規模の環境問題となっており、この
ためハロン１３０１、ＨＣＦＣ２１のようなＯ．Ｄ．Ｐ
（トリクロロフルオロメタンの成層圏オゾン破壊能力を
１としたときの成層圏オゾン破壊能力を示すオゾン破壊
係数）が０より大きい冷媒は、その使用が好ましくな
く、モントリオール議定書に基づき、将来的には使用不
可能となる。更に、ＨＣＦＣ２１は Underwriters' Lab
oratories による毒性の分類が４〜５であり、米国産業
衛生監督官会議が定めるＴＷＡ（１日８ｈｒ、１週４０
ｈｒの平常作業で有害物質に繰り返し暴露されても、ほ
とんどすべての作業者に健康障害を招くことがないと考
えられる気中濃度の時間荷重平均限界値）が１０ｐｐｍ
と毒性が高いという問題もある。However, in recent years, the depletion of the ozone layer in the stratosphere due to CFCs has become a global environmental problem. D. P
Refrigerants with a stratospheric ozone depletion capacity of trichlorofluoromethane of 1 (ozone depletion coefficient indicating the ozone depletion potential of the stratosphere) of greater than 0 are not preferable and will not be usable in the future based on the Montreal Protocol. Becomes Furthermore, HCFC21 is Underwriters' Lab
Toxicity classification by oratories is 4-5, and TWA (8 hr / day, 40 / week) established by the US Council of Industrial Health Supervisors.
Even if repeatedly exposed to harmful substances during normal work of hr, the time-weighted average limit value of the concentration in the air, which is considered not to cause health problems to almost all workers, is 10 ppm.
There is also the problem of high toxicity.
【０００４】従って、前記の１元超低温システム冷凍機
器に用いられる冷媒として、上記のような非共沸混合冷
媒と代替可能な冷媒が、当業界では強く要請されてい
た。Therefore, there has been a strong demand in the art for a refrigerant that can replace the non-azeotropic mixed refrigerant as described above as a refrigerant used in the above-mentioned single-source ultra-low temperature system refrigeration equipment.
【０００５】本発明の目的は、上記の課題を解決すべ
く、Ｏ．Ｄ．Ｐが０で、かつ毒性が低く、上記の冷凍シ
ステムにレトロフィットして、システムを変更しなくて
もその性能を維持できる、前記冷媒と代替可能な非共沸
混合冷媒を提供することにある。また、本発明の目的
は、当該冷媒を用いる冷凍方法を提供することにある。The object of the present invention is to solve the above problems. D. (EN) A non-azeotropic mixed refrigerant which is 0, has low toxicity, and is retrofit to the above refrigeration system and can maintain its performance without changing the system, and which can replace the refrigerant. . Moreover, the objective of this invention is providing the freezing method using the said refrigerant | coolant.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記の目
的を達成するため鋭意検討した結果、ノルマルブタン、
プロピレン又はプロパン、ペンタフルオロエタンおよび
テトラフルオロメタンを混合してなる非共沸混合冷媒
が、上記の課題を解決しうることを見出し、本発明を完
成するに至った。Means for Solving the Problems As a result of earnest studies to achieve the above-mentioned object, the present inventors have found that normal butane
The inventors have found that a non-azeotropic mixed refrigerant prepared by mixing propylene or propane, pentafluoroethane and tetrafluoromethane can solve the above problems, and have completed the present invention.
【０００７】すなわち、本発明の要旨は、（１） ノル
マルブタン（ｎ−Ｃ4 Ｈ10：ＨＣ６００）、プロピレン
（Ｃ3 Ｈ6：ＨＣ１２７０）、ペンタフルオロエタン
（Ｃ2 ＨＦ5 ：ＨＦＣ１２５）およびテトラフルオロメ
タン（ＣＦ4 ：ＦＣ１４）を混合してなる非共沸混合冷
媒、（２） 混合の重量比が、ＨＣ６００：ＨＣ１２７
０：ＨＦＣ１２５：ＦＣ１４＝（３４．２〜３８．
３）：（９．０〜１０．０）：（２５．４〜２９．
０）：（２４．２〜３０．４）である前記（１）記載の
非共沸混合冷媒、（３） 混合の重量比が、ＨＣ６０
０：ＨＣ１２７０：ＨＦＣ１２５：ＦＣ１４＝３７．
３：９．１：２６．０：２７．６である前記（１）記載
の非共沸混合冷媒、（４） ノルマルブタン（ｎ−Ｃ4
Ｈ10：ＨＣ６００）、プロパン（ＨＣ２９０）、ペンタ
フルオロエタン（Ｃ2 ＨＦ5 ：ＨＦＣ１２５）およびテ
トラフルオロメタン（ＣＦ4 ：ＦＣ１４）を混合してな
る非共沸混合冷媒、（５） 混合の重量比が、ＨＣ６０
０：ＨＣ２９０：ＨＦＣ１２５：ＦＣ１４＝（２４．５
〜３６．４）：（５．２〜６．７）：（２９．４〜３
６．９）：（２７．２〜３３．４）である前記（４）記
載の非共沸混合冷媒、並びに（６） 一組の凝縮器、蒸
発器及び圧縮機と、多段に設けた熱交換器及び気液分離
器により実質的に構成される１元超低温システムを採用
する冷凍方法において、前記（１）〜（５）いずれか記
載の非共沸混合冷媒を用いることを特徴とする冷凍方
法、に関する。[0007] That is, the gist of the present invention, (1) normal butane (n-C 4 H 10: HC600), propylene (C 3 H 6: HC1270) , pentafluoroethane (C 2 HF 5: HFC125) and tetra fluoromethane (CF 4: FC14) comprising a mixture of non-azeotropic refrigerant, (2) the weight ratio of mixing, HC600: HC127
0: HFC125: FC14 = (34.2 to 38.
3): (9.0 to 10.0): (25.4 to 29.
0): (24.2-30.4), the non-azeotropic mixed refrigerant according to (1) above, and (3) the weight ratio of the mixture is HC60.
0: HC1270: HFC125: FC14 = 37.
3: 9.1: 26.0: wherein is 27.6 (1) non-azeotropic refrigerant mixture according, (4) normal butane (n-C 4
H 10 : HC600), propane (HC290), pentafluoroethane (C 2 HF 5 : HFC125) and tetrafluoromethane (CF 4 : FC14), a non-azeotropic refrigerant mixture, (5) Weight ratio of mixture But HC60
0: HC290: HFC125: FC14 = (24.5
~ 36.4): (5.2-6.7): (29.4-3)
6.9): The non-azeotropic mixed refrigerant according to (4) above, which is (27.2 to 33.4), and (6) a set of a condenser, an evaporator, and a compressor, and heat provided in multiple stages. A refrigeration method adopting a one-source ultra-low temperature system substantially constituted by an exchanger and a gas-liquid separator, characterized by using the non-azeotropic mixed refrigerant according to any one of (1) to (5) above. About the method.
【０００８】本発明の非共沸混合冷媒には、プロピレン
（Ｃ3 Ｈ6 ：ＨＣ１２７０）を使用する第１の態様とプ
ロパン（ＨＣ２９０）を使用する第２の態様が存在す
る。即ち、第１の態様はノルマルブタン（ｎ−Ｃ
4 Ｈ10：ＨＣ６００）、プロピレン（Ｃ3 Ｈ6 ：ＨＣ１
２７０）、ペンタフルオロエタン（Ｃ2 ＨＦ5 ：ＨＦＣ
１２５）およびテトラフルオロメタン（ＣＦ4 ：ＦＣ１
４）を混合してなる非共沸混合冷媒であり、第２の態様
はノルマルブタン（ｎ−Ｃ4 Ｈ10：ＨＣ６００）、プロ
パン（ＨＣ２９０）、ペンタフルオロエタン（Ｃ2 ＨＦ
5 ：ＨＦＣ１２５）およびテトラフルオロメタン（ＣＦ
4 ：ＦＣ１４）を混合してなる非共沸混合冷媒である。The non-azeotropic mixed refrigerant of the present invention has a first mode using propylene (C 3 H 6 : HC1270) and a second mode using propane (HC290). That is, the first mode is normal butane (nC
4 H 10: HC600), propylene (C 3 H 6: HC1
270), pentafluoroethane (C 2 HF 5 : HFC
125) and tetrafluoromethane (CF 4 : FC1)
4) a non-azeotropic refrigerant mixture comprising a mixture of the second aspect normal butane (n-C 4 H 10: HC600), propane (HC290), pentafluoroethane (C 2 HF
5 : HFC125) and tetrafluoromethane (CF
4 : Non-azeotropic mixed refrigerant prepared by mixing FC14).
【０００９】以下、各成分、組成について説明する。ノ
ルマルブタンは、化学式ｎ−Ｃ4 Ｈ10で表される化合物
であり、標準沸点は−０．５０℃であり、それ自身の
Ｏ．Ｄ．Ｐは０である。Each component and composition will be described below. Normal butane is a compound represented by the formula n-C 4 H 10, the normal boiling point is -0.50 ° C., its own O. D. P is 0.
【００１０】第１の態様で用いられるプロピレンは、化
学式Ｃ3 Ｈ6 で表される化合物であり、標準沸点は−４
７．０℃であり、それ自身のＯ．Ｄ．Ｐは０である。第
２の態様で用いられるプロパンは、化学式Ｃ3 Ｈ8 で表
される化合物であり、標準沸点は−４２．０７℃であ
り、それ自身のＯ．Ｄ．Ｐは０である。本発明では、こ
れらプロピレン又はプロパンのいずれをも用いることが
できるが、後述の１元超低温システム冷凍回路に用いた
場合に、冷却槽内をより低温に冷却することができる点
から、プロピレンを用いること、即ち第１の態様がより
好ましい。The propylene used in the first embodiment is a compound represented by the chemical formula C 3 H 6 and has a normal boiling point of -4.
7.0 ° C. and its own O.V. D. P is 0. The propane used in the second embodiment is a compound represented by the chemical formula C 3 H 8 , has a normal boiling point of −42.07 ° C., and has an O.C. D. P is 0. In the present invention, either propylene or propane can be used, but when used in a one-way ultra-low temperature system refrigeration circuit described later, propylene is used because the inside of the cooling tank can be cooled to a lower temperature. That is, the first aspect is more preferable.
【００１１】ペンタフルオロエタンは、化学式Ｃ2 ＨＦ
5 で表される化合物であり、標準沸点は−４８．５℃で
あり、それ自身のＯ．Ｄ．Ｐは０である。Pentafluoroethane has the chemical formula C 2 HF.
5 , which has a normal boiling point of −48.5 ° C. and its own O.V. D. P is 0.
【００１２】テトラフルオロメタンは、化学式ＣＦ4 で
表される化合物であり、標準沸点は−１２８．０℃であ
り、それ自身のＯ．Ｄ．Ｐは０である。Tetrafluoromethane is a compound represented by the chemical formula CF 4 , has a normal boiling point of -128.0 ° C., and has an O.V. D. P is 0.
【００１３】従って、以上の化合物の混合物である本発
明の非共沸混合冷媒も、トータルのＯ．Ｄ．Ｐが０とな
り、オゾン層に悪影響を与えないものである。Therefore, the non-azeotropic mixed refrigerant of the present invention, which is a mixture of the above compounds, also has a total O.V. D. P is 0, which does not adversely affect the ozone layer.
【００１４】第１の態様における上記化合物の混合の重
量比は、ＨＣ６００：ＨＣ１２７０：ＨＦＣ１２５：Ｆ
Ｃ１４＝（３４．２〜３８．３）：（９．０〜１０．
０）：（２５．４〜２９．０）：（２４．２〜３０．
４）であることが好ましい。この範囲内であると、特に
後述の１元超低温システム冷凍回路に用いた場合に、周
囲温度３０℃、電源周波数５０Ｈｚにおいて冷却槽内を
−８５℃以下の低温に冷却することができる。The weight ratio of the mixture of the above compounds in the first embodiment is HC600: HC1270: HFC125: F.
C14 = (34.2-38.3): (9.0-10.
0): (25.4 to 29.0): (24.2 to 30.).
4) is preferable. Within this range, particularly when used in a one-source ultra-low temperature system refrigeration circuit described later, the inside of the cooling tank can be cooled to a low temperature of −85 ° C. or lower at an ambient temperature of 30 ° C. and a power supply frequency of 50 Hz.
【００１５】また、第１の態様における上記化合物の混
合の重量比は、ＨＣ６００：ＨＣ１２７０：ＨＦＣ１２
５：ＦＣ１４＝３７．３：９．１：２６．０：２７．６
であることが最も好ましい。この重量比であると、特に
後述の１元超低温システム冷凍回路に用いた場合に、周
囲温度３０℃、電源周波数５０Ｈｚにおいて冷却槽内を
最も低温（約−８９℃）に冷却することができる。The weight ratio of the mixture of the above compounds in the first embodiment is HC600: HC1270: HFC12.
5: FC14 = 37.3: 9.1: 26.0: 27.6
Is most preferable. With this weight ratio, when used in a one-source ultra-low temperature system refrigeration circuit described later, the inside of the cooling tank can be cooled to the lowest temperature (about −89 ° C.) at an ambient temperature of 30 ° C. and a power supply frequency of 50 Hz.
【００１６】第２の態様における上記化合物の混合の重
量比は、ＨＣ６００：ＨＣ２９０：ＨＦＣ１２５：ＦＣ
１４＝（２４．５〜３６．４）：（５．２〜６．７）：
（２９．４〜３６．９）：（２７．２〜３３．４）であ
ることが好ましい。この範囲内であると、特に後述の１
元超低温システム冷凍回路に用いた場合に、周囲温度３
０℃、電源周波数５０Ｈｚにおいて冷却槽内を−７４℃
以下の低温に冷却することができる。The weight ratio of the mixture of the above compounds in the second embodiment is HC600: HC290: HFC125: FC.
14 = (24.5 to 36.4): (5.2 to 6.7):
(29.4 to 36.9): (27.2 to 33.4) is preferable. Within this range, in particular 1
Ambient temperature 3 when used in the original ultra low temperature system refrigeration circuit
-74 ℃ in the cooling tank at 0 ℃, power supply frequency 50Hz
It can be cooled to the following low temperatures.
【００１７】本発明の非共沸混合冷媒によると、従来の
１元超低温システムの冷凍回路を変更することなく、第
１の態様では−８２〜−８９℃、第２の態様では−８
４．４℃までの槽内温度を得ることができる。また、本
発明の非共沸混合冷媒は、可燃性ガスを含有するが、図
１の冷凍回路において、２基の気液分離器から液体とし
て熱交換器に供給される冷媒の漏れガスは可燃性である
が、発泡ウレタン内であるので、外部に放出されるおそ
れは無い。そして、それ以外の領域からの漏れガスは初
期は不燃性のＦＣ１４を主体とするガスであるため危険
性はない。従って、前記の１元超低温システムを採用す
る冷凍機器に用いられる冷媒として、従来の非共沸混合
冷媒と代替可能な冷媒を提供することができる。According to the non-azeotropic mixed refrigerant of the present invention, without changing the refrigeration circuit of the conventional one-source ultra-low temperature system, -82 to -89 ° C in the first mode and -8 in the second mode.
It is possible to obtain a temperature in the bath up to 4.4 ° C. Further, the non-azeotropic mixed refrigerant of the present invention contains a combustible gas, but in the refrigeration circuit of FIG. 1, the leakage gas of the refrigerant supplied as liquid from the two gas-liquid separators to the heat exchanger is combustible. However, since it is in urethane foam, there is no risk of it being released to the outside. The leakage gas from the other regions is initially incombustible and is not dangerous because it is mainly composed of FC14. Therefore, it is possible to provide a refrigerant that can replace the conventional non-azeotropic mixed refrigerant as the refrigerant used in the refrigeration equipment adopting the above-mentioned one-source ultra-low temperature system.
【００１８】本発明の冷凍方法は、一組の凝縮器、蒸発
器及び圧縮機と、多段に設けた熱交換器及び気液分離器
により実質的に構成される１元超低温システムを採用す
る冷凍方法において、以上の非共沸混合冷媒を用いるこ
とを特徴とするものである。本発明における１元超低温
システム冷凍回路の一例を図１に示すが、本発明の冷凍
方法はこれに限定されるものではなく、同様の原理に基
づくあらゆる冷凍回路に適用できる。The refrigeration method of the present invention employs a refrigeration system that employs a single-source ultra-low temperature system that is substantially composed of a set of condenser, evaporator and compressor, and heat exchangers and gas-liquid separators arranged in multiple stages. In the method, the above non-azeotropic mixed refrigerant is used. An example of the one-source ultra-low temperature system refrigerating circuit in the present invention is shown in FIG. 1, but the refrigerating method of the present invention is not limited to this and can be applied to any refrigerating circuit based on the same principle.
【００１９】このような１元超低温システムでは、非共
沸混合冷媒を使用することにより、単一の圧縮機で構成
された冷凍装置で超低温を達成することができる。本発
明によると、かかる非共沸混合冷媒として、前記の冷媒
を用いることにより、オゾン層に悪影響を与えず、かつ
人体に無害なガスで、１元超低温システムを構成するこ
とができる。In such a one-source ultra-low temperature system, by using a non-azeotropic mixed refrigerant, it is possible to achieve an ultra-low temperature with a refrigerating apparatus composed of a single compressor. According to the present invention, by using the above-mentioned refrigerant as such a non-azeotropic mixed refrigerant, it is possible to configure a one-source ultra-low temperature system with a gas that does not adversely affect the ozone layer and is harmless to the human body.
【００２０】[0020]
【実施例】以下、実施例及び比較例により本発明をさら
に詳しく説明するが、本発明はこれらの実施例等により
なんら限定されるものではない。EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.
【００２１】実施例１〜２５（プロピレン使用） 図１に示す１元超低温システム冷凍回路を採用した超低
温保存庫ＢＦＨ−１１０（タバイエスペック（株）製）
に、表１〜３に示す組成の本発明の非共沸混合冷媒を充
填し、下記の条件で操作を行った。 電源周波数：表中＊１は６０Ｈｚ、他は５０Ｈｚ 槽内温度は設定値を低温側に振り切らせて運転し、充分
に安定した時に測定した。そのときの槽内温度と外気温
度の値を表１〜３に示す。なお、槽内温度は内槽の幾何
学的中心温度である。Examples 1 to 25 (Using Propylene) Ultra Low Temperature Storage Cabinet BFH-110 (manufactured by Tabai Espec Co., Ltd.) adopting the one-source ultra low temperature system refrigeration circuit shown in FIG.
Was filled with the non-azeotropic mixed refrigerant of the present invention having the composition shown in Tables 1 to 3, and the operation was performed under the following conditions. Power supply frequency: * 1 in the table is 60 Hz, other is 50 Hz. The temperature inside the tank was measured by operating it with the set value shaken off to the low temperature side. The values of the temperature inside the tank and the outside air at that time are shown in Tables 1 to 3. The temperature in the tank is the geometric center temperature of the inner tank.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【表２】 [Table 2]
【００２４】[0024]
【表３】 [Table 3]
【００２５】実施例２６〜５０（プロパン使用） 実施例１において、表４〜６に示す組成の本発明の非共
沸混合冷媒を充填する以外は、実施例１と同様の条件で
操作を行った。そのときの槽内温度の値を表４〜６に示
す。なお、外気温度はいずれも３０℃であった。この
時、電源周波数は５０Ｈｚであった。Examples 26 to 50 (Propane is used) In Example 1, operation is performed under the same conditions as in Example 1 except that the non-azeotropic mixed refrigerant of the present invention having the composition shown in Tables 4 to 6 is charged. It was The values of the bath temperature at that time are shown in Tables 4 to 6. The outside air temperature was 30 ° C in all cases. At this time, the power supply frequency was 50 Hz.
【００２６】[0026]
【表４】 [Table 4]
【００２７】[0027]
【表５】 [Table 5]
【００２８】[0028]
【表６】 [Table 6]
【００２９】比較例１ 実施例１において本発明の非共沸混合冷媒の代わりに、
表７に示す組成の従来の非共沸混合冷媒を充填する以外
は、実施例１と同様の条件で操作を行った。そのときの
槽内温度と外気温度の値を表７に示す。この時、電源周
波数は５０Ｈｚであった。Comparative Example 1 Instead of the non-azeotropic mixed refrigerant of the present invention in Example 1,
The operation was performed under the same conditions as in Example 1 except that the conventional non-azeotropic mixed refrigerant having the composition shown in Table 7 was charged. Table 7 shows the values of the temperature inside the tank and the outside air temperature at that time. At this time, the power supply frequency was 50 Hz.
【００３０】[0030]
【表７】 [Table 7]
【００３１】実施例の非共沸混合冷媒によると、従来の
冷凍回路を変更することなく、従来の冷媒を用いた比較
例と同等の槽内温度（実施例１〜２５は−８２〜−８９
℃，実施例２６〜５０は−７１〜−８４℃）を得ること
ができた。特に、混合の重量比が、ＨＣ６００：ＨＣ１
２７０：ＨＦＣ１２５：ＦＣ１４＝３７．３：９．１：
２６．０：２７．６である実施例１の場合に、−８９．
３℃という最も低い温度が得られた。According to the non-azeotropic mixed refrigerant of the embodiment, the temperature in the tank is the same as that of the comparative example using the conventional refrigerant (-82 to -89 in the embodiments 1 to 25) without changing the conventional refrigeration circuit.
C., Examples 26 to 50 were −71 to −84 ° C.). In particular, the mixing weight ratio is HC600: HC1.
270: HFC125: FC14 = 37.3: 9.1:
In the case of Example 1 which is 26.0: 27.6, -89.
The lowest temperature of 3 ° C was obtained.
【００３２】[0032]
【発明の効果】本発明の非共沸混合冷媒は、１元超低温
システムを採用する冷凍機器に用いられる、従来の非共
沸混合冷媒と代替可能である。即ち、Ｏ．Ｄ．Ｐが０で
オゾン層に悪影響を与えず、かつ毒性も低く、従来の冷
凍システムにレトロフィットして、システムを変更しな
くてもその性能を維持することができる。またこの冷媒
を用いた本発明の冷凍方法によると、オゾン層に悪影響
を与えず、かつ人体に無害なガスで、１元超低温システ
ムを構成することができる。The non-azeotropic mixed refrigerant of the present invention can replace the conventional non-azeotropic mixed refrigerant used in refrigeration equipment adopting the one-source ultra-low temperature system. That is, O. D. When P is 0, it does not adversely affect the ozone layer, has low toxicity, and can retrofit to a conventional refrigeration system to maintain its performance without changing the system. Further, according to the refrigerating method of the present invention using this refrigerant, it is possible to configure a one-way ultra-low temperature system with a gas that does not adversely affect the ozone layer and is harmless to the human body.
【図１】図１は、実施例で用いた装置が採用する１元超
低温システムの冷凍回路の概略図である。FIG. 1 is a schematic diagram of a refrigeration circuit of a one-source ultra-low temperature system adopted by an apparatus used in an example.
１ 圧縮器 ２ 蒸発器 ３ 凝縮器 ４ 気液分離器 ５ リリーフタンク ６ ドライヤー ７ 熱交換器 ８ キャピラリーチューブ 1 Compressor 2 Evaporator 3 Condenser 4 Gas-liquid separator 5 Relief tank 6 Dryer 7 Heat exchanger 8 Capillary tube
Claims (6)
００）、プロピレン（Ｃ3 Ｈ6 ：ＨＣ１２７０）、ペン
タフルオロエタン（Ｃ2 ＨＦ5 ：ＨＦＣ１２５）および
テトラフルオロメタン（ＣＦ4 ：ＦＣ１４）を混合して
なる非共沸混合冷媒。1. A normal butane (n-C 4 H 10: HC6
00), propylene (C 3 H 6: HC1270) , pentafluoroethane (C 2 HF 5: HFC125) and tetrafluoromethane (CF 4: FC14) comprising a mixture of non-azeotropic refrigerant.
７０：ＨＦＣ１２５：ＦＣ１４＝（３４．２〜３８．
３）：（９．０〜１０．０）：（２５．４〜２９．
０）：（２４．２〜３０．４）である請求項１記載の非
共沸混合冷媒。2. The weight ratio of the mixture is HC600: HC12.
70: HFC125: FC14 = (34.2-38.
3): (9.0 to 10.0): (25.4 to 29.
0): (24.2-30.4), The non-azeotropic mixed refrigerant according to claim 1.
７０：ＨＦＣ１２５：ＦＣ１４＝３７．３：９．１：２
６．０：２７．６である請求項１記載の非共沸混合冷
媒。3. The weight ratio of the mixture is HC600: HC12.
70: HFC125: FC14 = 37.3: 9.1: 2
The non-azeotropic mixed refrigerant according to claim 1, which has a ratio of 6.0: 27.6.
００）、プロパン（ＨＣ２９０）、ペンタフルオロエタ
ン（Ｃ2 ＨＦ5 ：ＨＦＣ１２５）およびテトラフルオロ
メタン（ＣＦ4 ：ＦＣ１４）を混合してなる非共沸混合
冷媒。4. A normal butane (n-C 4 H 10: HC6
00), propane (HC290), pentafluoroethane (C 2 HF 5 : HFC125) and tetrafluoromethane (CF 4 : FC14).
０：ＨＦＣ１２５：ＦＣ１４＝（２４．５〜３６．
４）：（５．２〜６．７）：（２９．４〜３６．９）：
（２７．２〜３３．４）である請求項４記載の非共沸混
合冷媒。5. The weight ratio of the mixture is HC600: HC29.
0: HFC125: FC14 = (24.5-36.
4): (5.2 to 6.7): (29.4 to 36.9):
The non-azeotropic mixed refrigerant according to claim 4, which is (27.2 to 33.4).
段に設けた熱交換器及び気液分離器により実質的に構成
される１元超低温システムを採用する冷凍方法におい
て、請求項１〜５いずれか記載の非共沸混合冷媒を用い
ることを特徴とする冷凍方法。6. A refrigeration method employing a one-source ultra-low temperature system substantially constituted by a set of a condenser, an evaporator and a compressor, and a heat exchanger and a gas-liquid separator provided in multiple stages. A refrigerating method using the non-azeotropic mixed refrigerant according to any one of 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6315625A JP2893164B2 (en) | 1994-11-25 | 1994-11-25 | Non-azeotropic mixed refrigerant and refrigeration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6315625A JP2893164B2 (en) | 1994-11-25 | 1994-11-25 | Non-azeotropic mixed refrigerant and refrigeration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08143859A true JPH08143859A (en) | 1996-06-04 |
| JP2893164B2 JP2893164B2 (en) | 1999-05-17 |
Family
ID=18067620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6315625A Expired - Lifetime JP2893164B2 (en) | 1994-11-25 | 1994-11-25 | Non-azeotropic mixed refrigerant and refrigeration method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2893164B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023494A1 (en) | 1999-09-28 | 2001-04-05 | Sanyo Electric Co., Ltd. | Refrigerant composition and refrigerating circuit employing the same |
| JP2003013050A (en) * | 2001-07-03 | 2003-01-15 | Nihon Freezer Kk | Three component-based refrigerant for ultra low temperature |
| JP2003013049A (en) * | 2001-07-03 | 2003-01-15 | Nihon Freezer Kk | Three component-based refrigerant for ultra low temperature |
| JP2003342557A (en) * | 2003-03-17 | 2003-12-03 | Toshiba Kyaria Kk | Refrigerant, refrigerant compressor and refrigeration unit |
-
1994
- 1994-11-25 JP JP6315625A patent/JP2893164B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023494A1 (en) | 1999-09-28 | 2001-04-05 | Sanyo Electric Co., Ltd. | Refrigerant composition and refrigerating circuit employing the same |
| US6652769B1 (en) | 1999-09-28 | 2003-11-25 | Sanyo Electric Co., Ltd. | Refrigerant composition and refrigerating circuit employing the same |
| JP4651255B2 (en) * | 1999-09-28 | 2011-03-16 | 三洋電機株式会社 | Refrigerant composition and refrigeration circuit using the same |
| JP2003013050A (en) * | 2001-07-03 | 2003-01-15 | Nihon Freezer Kk | Three component-based refrigerant for ultra low temperature |
| JP2003013049A (en) * | 2001-07-03 | 2003-01-15 | Nihon Freezer Kk | Three component-based refrigerant for ultra low temperature |
| JP2003342557A (en) * | 2003-03-17 | 2003-12-03 | Toshiba Kyaria Kk | Refrigerant, refrigerant compressor and refrigeration unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2893164B2 (en) | 1999-05-17 |
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