JPH11181414A - Combustible refrigerant composition, freezing apparatus using the same, treatment of the same and treatment device therefor - Google Patents
Combustible refrigerant composition, freezing apparatus using the same, treatment of the same and treatment device thereforInfo
- Publication number
- JPH11181414A JPH11181414A JP9357043A JP35704397A JPH11181414A JP H11181414 A JPH11181414 A JP H11181414A JP 9357043 A JP9357043 A JP 9357043A JP 35704397 A JP35704397 A JP 35704397A JP H11181414 A JPH11181414 A JP H11181414A
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- Prior art keywords
- refrigerant
- composition
- refrigerant composition
- hfc
- same
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、オゾン層を破壊す
る危険がない上、地球の温暖化効果を抑制した可燃性冷
媒組成物、可燃性冷媒組成物を用いた冷凍装置、可燃性
冷媒組成物の処理方法および処理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 flammable refrigerant composition, a refrigeration system using the flammable refrigerant composition, and a flammable refrigerant composition, in which there is no danger of destruction of the ozone layer and the global warming effect is suppressed. The present invention relates to a method and an apparatus for processing an object.
【０００２】[0002]
【従来の技術】従来、冷凍機の冷媒として用いられてい
るものはジクロロジフルオロメタン（Ｒ−１２）や共沸
混合冷媒のＲ−１２と１，１−ジフルオロエタン（Ｒ−
１５２ａ）とからなるＲ−５００が多い。しかしなが
ら、上記の各冷媒は、その高いオゾン破壊の潜在性によ
り大気中に放出されて地球上空のオゾン層に到達する
と、このオゾン層を破壊する。このオゾン層の破壊は冷
媒中の塩素基（Ｃｌ）により引き起こされる。そこで、
塩素基を含まない冷媒、例えば、ジフルオロメタン（Ｈ
ＦＣ−３２、Ｒ−３２）、トリフルオロメタン（ＨＦＣ
−２３、Ｒ−２３）、ペンタフルオロエタン（ＨＦＣ−
１２５、Ｒ−１２５）、１，１，１，２−テトラフルオ
ロエタン（ＨＦＣ−１３４ａ、Ｒ−１３４ａ）、１，
１，１−トリフルオロエタン（ＨＦＣ−１４３ａ、Ｒ−
１４３ａ）、塩素基と水素を含まないフルオロカーボン
系冷媒（ＦＣ系冷媒）、あるいはこれらのＨＦＣ系冷媒
やＦＣ系冷媒混合物が前記冷媒の代替冷媒として考えら
れている。2. Description of the Related Art Conventionally, refrigerants used in refrigerators include dichlorodifluoromethane (R-12) and azeotropic mixed refrigerants R-12 and 1,1-difluoroethane (R-12).
152-a). However, each of the above refrigerants is released into the atmosphere due to its high ozone depletion potential and, when reaching the ozone layer above the earth, destroys this ozone layer. This destruction of the ozone layer is caused by chlorine groups (Cl) in the refrigerant. Therefore,
A refrigerant containing no chlorine group, for example, difluoromethane (H
FC-32, R-32), trifluoromethane (HFC
-23, R-23), pentafluoroethane (HFC-
125, R-125), 1,1,1,2-tetrafluoroethane (HFC-134a, R-134a), 1,
1,1-trifluoroethane (HFC-143a, R-
143a), a fluorocarbon-based refrigerant containing no chlorine group and hydrogen (FC-based refrigerant), or a mixture of these HFC-based refrigerants and FC-based refrigerants is considered as an alternative refrigerant to the refrigerant.
【０００３】[0003]
【発明が解決しようとする課題】これらのＨＦＣ系やＦ
Ｃ系冷媒はオゾン層を破壊する危険はないが、地球温暖
化効果が炭酸ガスより約１０００倍も大きいことが知ら
れている。そこで、現在これらの冷媒ガスを回収して焼
却などにより破壊したり、精製して再利用しようという
提案がなされている。しかし、これらの冷媒ガスの回
収、精製、破壊は手間もかかり、コスト的にも大変高価
であるという問題がある。本発明は上記の問題を解決す
るものであり、本発明の目的は、オゾン層を破壊する危
険がない上、地球温暖化効果を抑制した可燃性冷媒組成
物、この可燃性冷媒組成物を用いた冷凍装置、この可燃
性冷媒組成物の処理方法およびこの可燃性冷媒組成物の
処理装置を提供することである。SUMMARY OF THE INVENTION These HFC systems and FFCs
Although the C-based refrigerant has no danger of destroying the ozone layer, it is known that the global warming effect is about 1000 times greater than that of carbon dioxide. Accordingly, proposals have been made to collect and destroy these refrigerant gases by incineration or the like, or purify and reuse them. However, there is a problem that recovery, purification, and destruction of these refrigerant gases are troublesome and very expensive. The present invention solves the above-mentioned problems, and an object of the present invention is to use a flammable refrigerant composition which has no risk of destruction of the ozone layer and has a reduced global warming effect. It is an object of the present invention to provide a refrigerating apparatus, a method for treating the flammable refrigerant composition, and an apparatus for treating the flammable refrigerant composition.
【０００４】[0004]
【課題を解決するための手段】すなわち、上記課題を解
決するため請求項１の発明は、ＨＦＣ系冷媒および／ま
たはＦＣ系冷媒と、炭素数１〜５の炭化水素とを含有す
ることを特徴とする可燃性冷媒組成物である。That is, to solve the above-mentioned problems, the invention of claim 1 is characterized in that it contains an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms. Is a flammable refrigerant composition.
【０００５】本発明の請求項２の発明は、請求項１記載
の可燃性冷媒組成物において、組成物全体を基準にして
炭素数１〜５の炭化水素を６重量％以上９０重量％以下
含有することを特徴とする。According to a second aspect of the present invention, there is provided the flammable refrigerant composition according to the first aspect, wherein a hydrocarbon having 1 to 5 carbon atoms is contained in an amount of from 6% by weight to 90% by weight based on the whole composition. It is characterized by doing.
【０００６】本発明の請求項３の発明は、ＨＦＣ系冷媒
および／またはＦＣ系冷媒と、炭素数１〜５の炭化水素
とを含有する可燃性冷媒組成物を冷凍回路に封入したこ
とを特徴とする冷凍装置である。According to a third aspect of the present invention, a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms is sealed in a refrigeration circuit. Is a refrigeration apparatus.
【０００７】本発明の請求項４の発明は、ＨＦＣ系冷媒
および／またはＦＣ系冷媒と、炭素数１〜５の炭化水素
とを含有する可燃性冷媒組成物の圧力を調整後、大気中
で燃焼することを特徴とする可燃性冷媒組成物の処理方
法である。According to a fourth aspect of the present invention, the pressure of a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms is adjusted and then adjusted to the atmosphere. It is a method for treating a combustible refrigerant composition characterized by burning.
【０００８】本発明の請求項５の発明は、ＨＦＣ系冷媒
および／またはＦＣ系冷媒と、炭素数１〜５の炭化水素
とを含有する可燃性冷媒組成物を封入した冷凍回路に連
結可能な圧力レギュレータと、この圧力レギュレータに
連結した燃焼用装置とを備えたことを特徴とする可燃性
冷媒組成物の処理装置である。[0008] The invention of claim 5 of the present invention can be connected to a refrigeration circuit in which a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms is enclosed. An apparatus for treating a flammable refrigerant composition, comprising: a pressure regulator; and a combustion device connected to the pressure regulator.
【０００９】[0009]
【発明の実施の形態】本発明の冷媒組成物は、前記のよ
うなＨＦＣ系冷媒（Ｒ１３４ａ、Ｒ１２５、Ｒ１４３
ａ、Ｒ３２、Ｒ２３、Ｒ１４など）単独あるいはこれら
のＨＦＣ系冷媒の混合物、ＦＣ系冷媒単独あるいはＦＣ
系冷媒の混合物、あるいはこれらの冷媒の混合物に対し
て、炭素数１〜５の炭化水素を混合した冷媒組成物であ
って、大気中で一旦燃焼させると酸化反応による熱が連
続的に発生して、その燃焼の熱により継続して燃焼が進
行してＨＦＣ系冷媒やＦＣ系冷媒の分子構造が破壊され
るように混合された可燃性冷媒組成物である。燃焼後の
ガスは温暖化係数の高いＨＦＣ系冷媒やＦＣ系冷媒を含
まず、温暖化係数の低いＣＯ2 、Ｈ2 Ｏ、ＦＯ2 などを
含む。本発明で用いる炭素数１〜５の炭化水素は、分子
構造が直鎖状でも分岐状でもこれらの混合物であっても
よく、例えば、メタン、エタン、プロパン、ブタン、ペ
ンタン、イソブタン、イソペンタンなどを挙げることが
できる。BEST MODE FOR CARRYING OUT THE INVENTION The refrigerant composition of the present invention comprises an HFC-based refrigerant (R134a, R125, R143) as described above.
a, R32, R23, R14, etc.) alone or a mixture of these HFC-based refrigerants, FC-based refrigerant alone or FC
A mixture of a series of refrigerants, or a mixture of these refrigerants, with a mixture of hydrocarbons having 1 to 5 carbon atoms. Once burned in air, heat is continuously generated by the oxidation reaction. Further, the combustible refrigerant composition is mixed so that the combustion proceeds continuously by the heat of the combustion and the molecular structure of the HFC-based refrigerant or the FC-based refrigerant is destroyed. The gas after combustion does not include HFC-based refrigerants and FC-based refrigerants having a high global warming coefficient, but includes CO 2 , H 2 O, and FO 2 having a low global warming coefficient. The hydrocarbon having 1 to 5 carbon atoms used in the present invention may have a linear or branched molecular structure or a mixture thereof. For example, methane, ethane, propane, butane, pentane, isobutane, isopentane, etc. Can be mentioned.
【００１０】本発明において、前記のような燃焼を促進
させるための炭化水素の混合比は６重量％よりも大きい
ことが好ましく、６重量％未満では不燃性となる。ま
た、炭化水素の比率が９０％を超えてしまうとＨＦＣ系
冷媒やＦＣ系冷媒を混合するメリットがほとんど無くな
ってしまう。炭素数１〜５の炭化水素の混合割合が６重
量％以上９０重量％の範囲で最も安全に燃焼させること
ができ、かつＨＦＣ系冷媒やＦＣ系冷媒の分子構造を破
壊する熱量が得られる。In the present invention, the mixing ratio of hydrocarbons for promoting combustion as described above is preferably greater than 6% by weight, and if it is less than 6% by weight, it becomes nonflammable. If the hydrocarbon ratio exceeds 90%, the merit of mixing the HFC-based refrigerant and the FC-based refrigerant is almost lost. When the mixing ratio of hydrocarbons having 1 to 5 carbon atoms is in the range of 6% by weight or more and 90% by weight, combustion can be performed most safely, and the amount of heat that destroys the molecular structure of the HFC-based refrigerant or the FC-based refrigerant can be obtained.
【００１１】本発明の可燃性冷媒組成物を冷凍回路に封
入した冷凍装置は優れた冷凍能力を有し信頼性が高い
上、オゾン層を破壊する危険がなく、地球温暖化効果を
抑制した可燃性冷媒組成物を用いているので地球環境に
優しい冷凍装置である。The refrigeration system in which the flammable refrigerant composition of the present invention is sealed in a refrigeration circuit has excellent refrigeration capacity and high reliability, has no danger of destruction of the ozone layer, and has a suppressed global warming effect. This is a refrigeration system that is friendly to the global environment because it uses a conductive refrigerant composition.
【００１２】本発明の可燃性冷媒組成物は、特別な前処
理や焼却装置などを使用することなく、それ自身の圧力
を約１〜１０ＫＰａ程度のプラスの微圧力（大気圧力に
対して）に調整して、大気中で安定して安全に燃焼させ
ることができる。The flammable refrigerant composition of the present invention can reduce its own pressure to a positive slight pressure of about 1 to 10 KPa (relative to atmospheric pressure) without using any special pretreatment or incineration equipment. By adjusting it, it is possible to stably and safely burn in the atmosphere.
【００１３】例えば、冷凍回路中の圧縮機へ本発明の可
燃性冷媒組成物を封入するための封入パイプもしくは冷
凍回路中の外部に開口できる弁の先に、圧力を微圧力に
調整する圧力レギュレータを設け、この圧力レギュレー
タに連結した燃焼用ノズルからでる本発明の可燃性冷媒
組成物に点火して、大気中で安定して安全に燃焼させる
ことができる。冷凍装置を廃棄する場所での処置ができ
るので運搬の費用が小さくてすむ。上記圧力レギュレー
タは冷凍回路内より連続的に放出される可燃性冷媒組成
物の圧力を大気中で着火することにより連続的に燃焼す
るような圧力状態にするために設けられるものであり、
冷凍回路内の可燃性冷媒組成物の一次圧力が大きく変化
しても、二次圧力が約１〜１０ＫＰａ程度、理想的には
３ＫＰａ程度になるように自動調節できる機能をもつ。[0013] For example, a pressure regulator for adjusting the pressure to a small pressure is provided at an end of a sealing pipe for sealing the combustible refrigerant composition of the present invention into a compressor in a refrigeration circuit or a valve openable to the outside in the refrigeration circuit. And ignites the combustible refrigerant composition of the present invention coming out of the combustion nozzle connected to the pressure regulator, and stably and safely burns in the atmosphere. Since the disposal can be performed at the place where the refrigeration unit is disposed, the transportation cost can be reduced. The pressure regulator is provided to bring the pressure of the flammable refrigerant composition continuously discharged from the refrigeration circuit into a pressure state such that it is continuously burned by igniting in the atmosphere,
Even if the primary pressure of the flammable refrigerant composition in the refrigeration circuit changes greatly, it has a function of automatically adjusting the secondary pressure to about 1 to 10 KPa, ideally about 3 KPa.
【００１４】図１は、本発明の一実施例を示す冷凍装置
の説明図である。図２は、本発明の可燃性冷媒組成物の
処理装置を連結した図１に示した冷凍装置の冷媒回路図
である。図１および図２において、１は圧縮機２を搭載
した冷蔵庫である。圧縮機２には凝縮器３、キャピラリ
チューブ４及び蒸発器５が順次接続され、冷凍回路を構
成している。圧縮機１には本発明の可燃性冷媒組成物の
処理装置６が連結されている。本発明の処理装置６は、
圧力レギュレータ７、燃焼用ノズル８およびこれらを連
結する管路９などから構成されている。冷凍回路中の圧
縮機１へ本発明の可燃性冷媒組成物を封入するための封
入パイプ１０の先に、圧力レギュレータ７を設け、この
圧力レギュレータ７に燃焼用ノズル８が連結されてい
る。燃焼用ノズル８からでる本発明の可燃性冷媒組成物
に点火して、大気中で安定して安全に燃焼させることが
できる。FIG. 1 is an explanatory view of a refrigeration apparatus showing one embodiment of the present invention. FIG. 2 is a refrigerant circuit diagram of the refrigeration apparatus shown in FIG. 1 to which the apparatus for treating a flammable refrigerant composition of the present invention is connected. 1 and 2, reference numeral 1 denotes a refrigerator on which a compressor 2 is mounted. A condenser 3, a capillary tube 4, and an evaporator 5 are sequentially connected to the compressor 2 to form a refrigeration circuit. The compressor 1 is connected with the combustible refrigerant composition processing apparatus 6 of the present invention. The processing device 6 of the present invention
It is composed of a pressure regulator 7, a combustion nozzle 8, and a pipe 9 connecting these. A pressure regulator 7 is provided at the end of a sealing pipe 10 for sealing the combustible refrigerant composition of the present invention into the compressor 1 in the refrigeration circuit, and a combustion nozzle 8 is connected to the pressure regulator 7. The flammable refrigerant composition of the present invention coming out of the combustion nozzle 8 can be ignited and stably and safely burned in the atmosphere.
【００１５】上記の実施例では燃焼用装置の例として燃
焼用ノズルを挙げたが、燃焼用装置は燃焼用ノズルに限
定されず、他の例としては例えば、適当な触媒（例え
ば、ゼオライト、アルミナ、酸化チタン、白金、これら
の混合物など）あるいは徐燃剤などを充填した燃焼用装
置を挙げることができる。この触媒あるいは徐燃剤など
を充填した燃焼用装置を用いると触媒あるいは徐燃剤な
どの作用により酸化反応による熱が連続的に発生して、
その燃焼の熱により継続して燃焼が進行して、大気中で
より安定して安全に燃焼させることができる。In the above embodiment, the combustion nozzle is described as an example of the combustion device. However, the combustion device is not limited to the combustion nozzle. As another example, a suitable catalyst (for example, zeolite, alumina, etc.) may be used. , Titanium oxide, platinum, and mixtures thereof) or a combustion device filled with a flame retardant. If a combustion device filled with this catalyst or flame retardant is used, heat due to the oxidation reaction is continuously generated by the action of the catalyst or flame retardant, etc.
The combustion proceeds continuously due to the heat of the combustion, and the combustion can be performed more stably and safely in the atmosphere.
【００１６】なお、本発明は上記実施例に限定されるも
のではないので、特許請求の範囲に記載の趣旨から逸脱
しない範囲で各種の変形実施が可能である。Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.
【００１７】[0017]
【発明の効果】本発明の可燃性冷媒組成物は、大気中で
一旦燃焼させると酸化反応による熱が連続的に発生し
て、その燃焼の熱により継続して燃焼が進行してＨＦＣ
系冷媒やＦＣ系冷媒の分子構造が破壊され、燃焼後のガ
スは温暖化係数の高いＨＦＣ系冷媒やＦＣ系冷媒を含ま
ず、温暖化係数の低いＣＯ2 、Ｈ2 Ｏ、ＦＯ2 などにな
る。According to the flammable refrigerant composition of the present invention, once it is burned in the atmosphere, heat due to an oxidation reaction is continuously generated, and the combustion proceeds continuously due to the heat of the combustion.
The molecular structure of the system refrigerant and FC-based refrigerant is destroyed, the gas after combustion does not include a high HFC-based refrigerant or FC-based refrigerant global warming potential, low CO 2 global warming potential, H 2 O, etc. FO 2 Become.
【００１８】炭化水素の混合比を６重量％以上９０重量
％の範囲とすれば最も安全に容易に低コストで燃焼させ
ることができる。When the mixing ratio of the hydrocarbon is in the range of 6% by weight to 90% by weight, combustion can be performed most safely and easily at low cost.
【００１９】本発明の可燃性冷媒組成物を冷凍回路に封
入した冷凍装置は優れた冷凍能力を有し信頼性が高い
上、オゾン層を破壊する危険がなく、かつ地球温暖化効
果を抑制した可燃性冷媒組成物を用いているので地球環
境に優しい。The refrigeration system in which the flammable refrigerant composition of the present invention is sealed in a refrigeration circuit has excellent refrigeration capacity, high reliability, has no risk of destruction of the ozone layer, and has a reduced global warming effect. The use of a flammable refrigerant composition is environmentally friendly.
【００２０】本発明の可燃性冷媒組成物は、特別な前処
理や焼却装置などを使用することなく、それ自身の圧力
を微圧力に調整して、大気中で安定して安全に容易に低
コストで燃焼させることができる。The flammable refrigerant composition of the present invention adjusts its own pressure to a small pressure without using any special pretreatment or incineration equipment, and stably and safely lowers it in the atmosphere. Can be burned at cost.
【００２１】例えば冷凍回路中の圧縮機へ冷媒組成物を
封入するための封入パイプの先に、圧力レギュレータを
設け、この圧力レギュレータに連結した燃焼用装置から
でる本発明の可燃性冷媒組成物を大気中で安定して安全
に容易に燃焼させることができるので、冷凍装置を廃棄
する場所での処置ができ運搬の費用などが小さくてす
む。For example, a pressure regulator is provided at the end of a filling pipe for filling the refrigerant composition into a compressor in a refrigeration circuit, and the flammable refrigerant composition of the present invention coming out of a combustion device connected to the pressure regulator is provided. Since the refrigeration system can be stably and easily burned in the atmosphere, treatment can be performed at a place where the refrigeration unit is disposed, and transportation costs and the like can be reduced.
【図１】 本発明の一実施例を示す冷凍装置の説明図で
ある。FIG. 1 is an explanatory diagram of a refrigeration apparatus showing one embodiment of the present invention.
【図２】 図１に示した本発明の冷凍装置の冷媒回路図
である。FIG. 2 is a refrigerant circuit diagram of the refrigeration apparatus of the present invention shown in FIG.
１ 冷蔵庫 ２ 圧縮機 ３ 凝縮器 ４ キャピラリーチューブ ５ 蒸発器 ６ 処理装置 ７ 圧力レギュレータ ８ 燃焼用ノズル ９ 管路 １０ 封入パイプ DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Compressor 3 Condenser 4 Capillary tube 5 Evaporator 6 Processing device 7 Pressure regulator 8 Combustion nozzle 9 Pipe line 10 Encapsulation pipe
Claims (5)
と、炭素数１〜５の炭化水素とを含有することを特徴と
する可燃性冷媒組成物。1. A flammable refrigerant composition comprising an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms.
炭化水素を６重量％以上９０重量％以下含有することを
特徴とする請求項１記載の可燃性冷媒組成物。2. The flammable refrigerant composition according to claim 1, wherein the composition contains 6 to 90% by weight of a hydrocarbon having 1 to 5 carbon atoms based on the whole composition.
と、炭素数１〜５の炭化水素とを含有する可燃性冷媒組
成物を冷凍回路に封入したことを特徴とする冷凍装置。3. A refrigeration apparatus characterized in that a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms is enclosed in a refrigeration circuit.
と、炭素数１〜５の炭化水素とを含有する可燃性冷媒組
成物の圧力を調整後、大気中で燃焼することを特徴とす
る可燃性冷媒組成物の処理方法。4. A flammable refrigerant characterized in that after adjusting the pressure of a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms, the composition is burned in the atmosphere. A method for treating a volatile refrigerant composition.
と、炭素数１〜５の炭化水素とを含有する可燃性冷媒組
成物を封入した冷凍回路に連結可能な圧力レギュレータ
と、この圧力レギュレータに連結した燃焼用装置とを備
えたことを特徴とする可燃性冷媒組成物の処理装置。5. A pressure regulator connectable to a refrigeration circuit in which a flammable refrigerant composition containing an HFC-based refrigerant and / or an FC-based refrigerant and a hydrocarbon having 1 to 5 carbon atoms is enclosed. An apparatus for treating a flammable refrigerant composition, comprising: a combustion apparatus connected to the apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35704397A JP3754198B2 (en) | 1997-12-25 | 1997-12-25 | Combustion refrigerant composition processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35704397A JP3754198B2 (en) | 1997-12-25 | 1997-12-25 | Combustion refrigerant composition processing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11181414A true JPH11181414A (en) | 1999-07-06 |
| JP3754198B2 JP3754198B2 (en) | 2006-03-08 |
Family
ID=18452094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35704397A Expired - Fee Related JP3754198B2 (en) | 1997-12-25 | 1997-12-25 | Combustion refrigerant composition processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3754198B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003515717A (en) * | 1999-12-03 | 2003-05-07 | アイジーシー ポリコールド システムズ インコーポレイテッド | R-22 free refrigerant blend for use in ultra low temperature refrigeration |
| US6604368B1 (en) | 1999-10-04 | 2003-08-12 | Refrigerant Products, Ltd. | R 12 replacement refrigerant |
| US6606868B1 (en) | 1999-10-04 | 2003-08-19 | Refrigerant Products, Ltd. | R 22 replacement refrigerant |
| US6629419B1 (en) | 1999-10-04 | 2003-10-07 | Refringerant Products Ltd. | CFC 12 replacement refrigerant |
| US6991743B2 (en) | 2002-03-19 | 2006-01-31 | Rpl Holdings Limited | Refrigerant for centrifugal compressors |
| US7410595B2 (en) | 2002-10-11 | 2008-08-12 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7641810B2 (en) | 2002-11-29 | 2010-01-05 | Neil Andre Roberts | Refrigerant compositions |
| US7972528B2 (en) | 2006-03-03 | 2011-07-05 | Rpl Holdings Limited | Refrigerant composition |
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| US10253233B2 (en) | 2015-03-27 | 2019-04-09 | Rpl Holdings Limited | Non-ozone depleting and low global warming refrigerant blends |
| US11459497B2 (en) | 2017-11-27 | 2022-10-04 | Rpl Holdings Limited | Low GWP refrigerant blends |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK0998539T3 (en) | 1997-07-15 | 2002-10-28 | Rhodia Ltd | refrigerant compositions |
| US7258813B2 (en) | 1999-07-12 | 2007-08-21 | E.I. Du Pont De Nemours And Company | Refrigerant composition |
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- 1997-12-25 JP JP35704397A patent/JP3754198B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6604368B1 (en) | 1999-10-04 | 2003-08-12 | Refrigerant Products, Ltd. | R 12 replacement refrigerant |
| US6606868B1 (en) | 1999-10-04 | 2003-08-19 | Refrigerant Products, Ltd. | R 22 replacement refrigerant |
| US6629419B1 (en) | 1999-10-04 | 2003-10-07 | Refringerant Products Ltd. | CFC 12 replacement refrigerant |
| JP2003515717A (en) * | 1999-12-03 | 2003-05-07 | アイジーシー ポリコールド システムズ インコーポレイテッド | R-22 free refrigerant blend for use in ultra low temperature refrigeration |
| US6991743B2 (en) | 2002-03-19 | 2006-01-31 | Rpl Holdings Limited | Refrigerant for centrifugal compressors |
| US7799240B1 (en) | 2002-10-11 | 2010-09-21 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7648642B2 (en) | 2002-10-11 | 2010-01-19 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7410595B2 (en) | 2002-10-11 | 2008-08-12 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7837894B2 (en) | 2002-10-11 | 2010-11-23 | E. I. Du Pont De Nemours And Company | Refrigerant compositions |
| US8246851B2 (en) | 2002-11-29 | 2012-08-21 | Roberts Neil Andre | Chiller refrigerants |
| US7713434B2 (en) | 2002-11-29 | 2010-05-11 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7771610B2 (en) | 2002-11-29 | 2010-08-10 | E.I. Du Pont De Nemours And Company | Refrigerant compositions |
| US7641810B2 (en) | 2002-11-29 | 2010-01-05 | Neil Andre Roberts | Refrigerant compositions |
| US7972528B2 (en) | 2006-03-03 | 2011-07-05 | Rpl Holdings Limited | Refrigerant composition |
| US8465664B2 (en) | 2006-03-03 | 2013-06-18 | Rpl Holdings Limited | Refrigerant composition |
| US8551354B2 (en) | 2006-03-03 | 2013-10-08 | Rpl Holdings Limited | Refrigerant composition |
| US9062237B2 (en) | 2006-03-03 | 2015-06-23 | Rpl Holdings Limited | Refrigerant composition |
| US9023231B2 (en) | 2009-12-21 | 2015-05-05 | Rpl Holdings Limited | Non ozone depleting and low global warming potential refrigerants for low temperature refrigeration |
| US10253233B2 (en) | 2015-03-27 | 2019-04-09 | Rpl Holdings Limited | Non-ozone depleting and low global warming refrigerant blends |
| US11459497B2 (en) | 2017-11-27 | 2022-10-04 | Rpl Holdings Limited | Low GWP refrigerant blends |
| US11827834B2 (en) | 2020-10-22 | 2023-11-28 | Rpl Holdings Limited | Thermal pump refrigerants |
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| JP3754198B2 (en) | 2006-03-08 |
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