JPH0320388A - Refrigerant composition - Google Patents

Refrigerant composition

Info

Publication number
JPH0320388A
JPH0320388A JP1155115A JP15511589A JPH0320388A JP H0320388 A JPH0320388 A JP H0320388A JP 1155115 A JP1155115 A JP 1155115A JP 15511589 A JP15511589 A JP 15511589A JP H0320388 A JPH0320388 A JP H0320388A
Authority
JP
Japan
Prior art keywords
refrigerant
compressor
oil
dichloromonofluoromethane
ozone layer
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.)
Pending
Application number
JP1155115A
Other languages
Japanese (ja)
Inventor
Kazuo Takemasa
一夫 竹政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1155115A priority Critical patent/JPH0320388A/en
Priority to AU57132/90A priority patent/AU627587B2/en
Priority to SU904830181A priority patent/RU2013431C1/en
Priority to MYPI90001000A priority patent/MY106740A/en
Priority to DE69012664T priority patent/DE69012664D1/en
Priority to US07/538,617 priority patent/US5062985A/en
Priority to CA002019096A priority patent/CA2019096C/en
Priority to KR1019900008800A priority patent/KR960009238B1/en
Priority to EP90111338A priority patent/EP0402937B1/en
Priority to CN 90104422 priority patent/CN1033817C/en
Priority to BR909002854A priority patent/BR9002854A/en
Publication of JPH0320388A publication Critical patent/JPH0320388A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:To obtain a refrigerant compsn. with no possibility of destroying the ozone layer and preventing a compressor from seizing by compounding a chlorine-free refrigerant with dichloromonofluoromethane. CONSTITUTION:A refrigerant compsn. comprising a chlorine-free refrigerant and dichloromonofluoromethane (R21). Examples of the refrigerant include pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and trifluoromethane (R23). Although chlorodifluoromethoane (R22), 1-chloro-1,1-difluoroethane (R142b) and R21 contain chlorine groups, they contain H atoms and are therefore decomposed activatedly before they reaches the ozone layer, thus excluding a possibility of destroying the ozone layer. As R21 exhibits very good compatibility with a compressor oil, the purpose of the invention can be achieved by mixing it with R125, R134a, R23 and R142b with poor compatibility.

Description

【発明の詳細な説明】 (イ〉産業上の利用分野 本発明は冷凍装置等に用いられ、且つ、オゾン層を破壊
しない冷媒組成物に関する. (口〉従来の技術 従来、冷凍機等の冷媒として用いられているものにはR
12(ジクロロジフル才ロメタン)やR500(R12
とR152m(1.1−ジフル才ロエタン)との共沸混
合物)が多い.R12の化学式はCC1*Fmである.
又、R12の沸点は約−30℃で、R500の沸点は約
−33°Cであり、通常の冷凍装置に好適である.更に
冷媒回路の圧縮機の潤滑用のオイルとの相溶性が良く、
冷媒回路中のオイルを圧縮機まで引き戻す役割も果す.
しかし乍ら、上記各冷媒は地球のオゾン層を破壊するお
それがあるとして、その使用が規制されるに至った.こ
のオゾンの破壊は冷媒中の塩素基(C1)により引き起
こされることは判っている.そこでこの塩素基を含まな
い冷媒、例えばR125(ペンタフル才axタン,CH
F*CFs )やR134a(1.1.1.2−テトラ
フル才ロエタン,CHJCFs )或いはR23(}リ
フル才ロメタン、σ,■)がこれらの代替冷媒として考
えられている.又、R22(クロロジフルオロメタン、
CCj!FAI)やR142b(1−クロロ−1、1−
ジフル才ロエタン、CmCj!FJs)は塩素基(Cm
! )を含むものではあるが、水素基(H)を有してい
るため、オゾン層に上昇する以前に活性分解されるので
、オゾン層を破壊するおそれがなく、規制の対象とはな
っていない. (ハ〉発明が解決しようとする課題 しかし乍ら、これらR125、R134a及びR23は
圧縮機のオイルとの相溶性が極度に悪い。即ち、オイル
との相溶性は塩素基(C2)の存在に依っているからで
ある。又、R22やR142bも塩素基《C1)を有す
るものの、オイルとの相溶性は良好ではない. 圧縮機のオイルが冷媒に溶けない場合、冷媒回路の蒸発
器中で二相分11!l(オイルと冷媒との分離)が発生
し、圧縮機にオイルが戻されずに圧縮機の軸受け摺動部
が焼付いてしまう危険性がある。
Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a refrigerant composition that is used in refrigeration equipment and the like and does not destroy the ozone layer. R for those used as
12 (dichlorodifluromethane) and R500 (R12
and R152m (1,1-difluoroethane)). The chemical formula of R12 is CC1*Fm.
Furthermore, the boiling point of R12 is about -30°C, and the boiling point of R500 is about -33°C, making them suitable for ordinary refrigeration equipment. Furthermore, it has good compatibility with the lubricating oil for the compressor in the refrigerant circuit.
It also plays the role of pulling oil in the refrigerant circuit back to the compressor.
However, the use of each of the above refrigerants has been regulated because of the risk of destroying the earth's ozone layer. It is known that this ozone destruction is caused by the chlorine group (C1) in the refrigerant. Therefore, refrigerants that do not contain this chlorine group, such as R125 (pentaftan, CH
F*CFs), R134a (1.1.1.2-tetrafluroethane, CHJCFs), or R23 (}rifleromethane, σ,■) are considered as alternative refrigerants. Also, R22 (chlorodifluoromethane,
CCj! FAI) and R142b (1-chloro-1,1-
Jifur talented Roetan, CmCj! FJs) is a chlorine group (Cm
! ), but since it has a hydrogen group (H), it is actively decomposed before it rises to the ozone layer, so there is no risk of destroying the ozone layer, and it is not subject to regulation. .. (C) Problems to be Solved by the Invention However, these R125, R134a and R23 have extremely poor compatibility with compressor oil. In other words, the compatibility with oil depends on the presence of chlorine groups (C2). Furthermore, although R22 and R142b also have a chlorine group (C1), their compatibility with oil is not good. If the compressor oil does not dissolve in the refrigerant, two phases will be generated in the evaporator of the refrigerant circuit 11! 1 (separation of oil and refrigerant), and there is a risk that the oil will not be returned to the compressor and the bearing sliding part of the compressor will seize.

本発明は斯かる問題点を解決することを目的とする. (二)課題を解決するための手段 本発明は化学式に塩素基を含まない冷媒及びジクロロモ
ノフルオロメタンとから冷媒組成物を構成したものであ
る. 又、クロロジフル才ロメタン及ヒシクロロモノフル才ロ
メタンとから冷媒組成物を構成したものである. 更に、1−クロロ−1、1−ジフル才ロエタン及びジク
ロロモノフルオロメタンとから冷媒組成物を構成したも
のである. (*)作用 R21(ジクロロモノフルオロメタン、CCl*FH)
は塩素基(C2)を有しているが、やはり水素基(11
)を有しているため、才ゾン層に上昇する以前に活性分
解されるので規制の対象となっていない、又、圧縮機の
オイルとの相溶性が非常に良好であるので、相溶性の悪
いR125、R134a% R23、R22やR142
bに混合することで、冷媒回路中のオイルをそれに溶け
込ませた状態で圧縮機に帰還せしめ、更にR21は圧縮
機内で蒸発して圧縮機を冷却する働きをする.(へ〉実
施例 次に図面にて実施例を説明する.第1図は冷媒回路を示
す、(20〉は圧縮機、(21〉は凝縮器、(22)は
キャピラリチューブ及び(23〉は蒸発器であり、順次
接続されている.冷媒回路内には化学式に塩素基(Cl
>を含まない冷媒、例えばR125(ペンタフル才ロエ
タン、CHFmCFa )とR21(ジクロロモノフル
オロメタン、CC1、FH)の混合冷媒が充填される.
その組成はR125が90重量%、R21が10重量%
である.R125の沸点は−48℃、R21の沸点は+
8.9℃である.充填する冷媒の他の実施例としてはR
134a(1.1.1.2−テトラブル才ロエタン. 
CHJCF m)とR21の混合物が考えられる.R1
34aの沸点は−27℃であり、その組成は同様にR1
34aが90重量%、R21が10重量%である.更に
他の例としてはR23(トリプル才ロメタン、CFJ)
とR21の混合冷媒が考えられる.R23の沸点は−8
2℃であり、その組成は同様にR23が90重量%、R
21が10重量%である.第1図の冷媒回路に適用する
冷媒としてはR22(クロロジフル才ロメタン、CCj
!FffiH)とR21の混合冷媒が考えられる.R2
2の沸点は−40℃であり、その組成はやはりR之2が
90重量%、R21が10重量%である.又、冷媒回路
にはR142b(1−クロロ−1、1−ジフル才口エタ
ン、C*CI FJs )とR21の混合冷媒が充填さ
れる,R142bの沸点は−9.8℃であり、その組成
はR1 42bが90重量%、R21が10重量%であ
る. 圧縮機(20〉から吐出された高温高圧ガス状冷媒混合
物は凝縮器(21〉に流入して放熱し、キャピラリチュ
ーブ(22)で減圧されて蒸発器《23〉に流入し、そ
こで蒸発して冷却能力を発揮し、圧縮機(20〉に帰還
する.R21は前述の如く沸点が高いため、その内に圧
縮機(20〉のオイルを溶け込ませた状態で圧縮機(2
0)に帰還し、圧縮機(20)内で蒸発してそれを冷却
する.これによって冷媒回路中のオイルは圧縮II(2
G)に帰還せしめられると共に、圧縮機(20)の吐出
冷媒温度を下げることができ、オイルスラッジの発生も
防止される. ここでR21の沸点は高い為、混合比が大き過ぎると、
所望の冷凍能力が得られなくなり、逆に小さ過ぎるとオ
イル戻しの機能を発揮できなくなる.従って実馳によれ
ば以上のいずれの場合においてもR21は全体の5重量
%〜15重量%が好ましく、望ましくは10重量%が良
い.(ト〉発明の効果 本発明の冷媒組成物によればオゾン層を破壊するおそれ
がなく、更に、圧縮機オイルとの相溶性の良いジクロロ
モノフルオロメタン(R21)によって冷媒回路中のオ
イルが帰還せしめられるので圧縮機の焼付きを防止でき
る.又、R21を圧縮機の冷却に使用できるので、才イ
ルスラッジの発生等も防止することができる.
The present invention aims to solve such problems. (2) Means for Solving the Problems The present invention provides a refrigerant composition composed of a refrigerant whose chemical formula does not contain a chlorine group and dichloromonofluoromethane. In addition, the refrigerant composition is composed of chlorodifluromethane and hiscyclomonofluoromethane. Furthermore, the refrigerant composition is composed of 1-chloro-1,1-difluoroethane and dichloromonofluoromethane. (*) Action R21 (dichloromonofluoromethane, CCl*FH)
has a chlorine group (C2), but it also has a hydrogen group (11
), it is not subject to regulations because it is actively decomposed before it rises to the saison layer, and it has very good compatibility with compressor oil, so it is not subject to regulations. Bad R125, R134a% R23, R22 and R142
By mixing R21 with R21, the oil in the refrigerant circuit is returned to the compressor in a dissolved state, and furthermore, R21 evaporates within the compressor and serves to cool the compressor. (Go to Example) Next, an example will be explained with reference to the drawings. Figure 1 shows a refrigerant circuit, (20> is a compressor, (21> is a condenser, (22) is a capillary tube, and (23> is They are evaporators and are connected in sequence.The refrigerant circuit contains a chlorine group (Cl) in the chemical formula.
A mixed refrigerant containing R125 (pentafluoroethane, CHFmCFa) and R21 (dichloromonofluoromethane, CC1, FH) is charged.
Its composition is 90% by weight R125 and 10% by weight R21.
It is. The boiling point of R125 is -48℃, and the boiling point of R21 is +
It is 8.9℃. Another example of the refrigerant to be filled is R
134a (1.1.1.2-Tetrables Roethan.
A mixture of CHJCF m) and R21 is considered. R1
The boiling point of 34a is -27°C, and its composition is similarly R1
34a is 90% by weight, and R21 is 10% by weight. Yet another example is R23 (Triple Romethane, CFJ)
A mixed refrigerant of R21 and R21 is considered. The boiling point of R23 is -8
2°C, and its composition is 90% by weight of R23 and R23.
21 is 10% by weight. The refrigerant used in the refrigerant circuit shown in Figure 1 is R22 (chlorodifluromethane, CCj
! A mixed refrigerant of FffiH) and R21 is considered. R2
The boiling point of 2 is -40°C, and its composition is 90% by weight of R-2 and 10% by weight of R21. In addition, the refrigerant circuit is filled with a mixed refrigerant of R142b (1-chloro-1,1-diful ethane, C*CIFJs) and R21.The boiling point of R142b is -9.8°C, and its composition is 90% by weight of R1 42b and 10% by weight of R21. The high-temperature, high-pressure gaseous refrigerant mixture discharged from the compressor (20) flows into the condenser (21) to radiate heat, is reduced in pressure by the capillary tube (22), and flows into the evaporator (23), where it is evaporated. It exerts its cooling ability and returns to the compressor (20).As mentioned above, R21 has a high boiling point, so the oil from the compressor (20) is dissolved in it and then returned to the compressor (20).
0) and evaporates in the compressor (20) to cool it. As a result, the oil in the refrigerant circuit is compressed II (2
At the same time, the temperature of the refrigerant discharged from the compressor (20) can be lowered, and the generation of oil sludge is also prevented. Since the boiling point of R21 is high, if the mixing ratio is too large,
You will not be able to obtain the desired refrigerating capacity, and conversely, if it is too small, you will not be able to perform the oil return function. Therefore, according to the author, in any of the above cases, R21 is preferably 5% to 15% by weight, preferably 10% by weight. (G) Effects of the Invention According to the refrigerant composition of the present invention, there is no risk of destroying the ozone layer, and furthermore, dichloromonofluoromethane (R21), which has good compatibility with compressor oil, allows oil in the refrigerant circuit to return. Since R21 can be used for cooling the compressor, it is possible to prevent the generation of oil sludge.

【図面の簡単な説明】[Brief explanation of drawings]

図面は冷媒回路図である. The drawing is a refrigerant circuit diagram.

Claims (1)

【特許請求の範囲】 1、化学式に塩素基を含まない冷媒及びジクロロモノフ
ルオロメタンから成る冷媒組成物。 2、クロロジフルオロメタン及びジクロロモノフルオロ
メタンから成る冷媒組成物。 3、1−クロロ−1,1−ジフルオロエタン及びジクロ
ロモノフルオロメタンから成る冷媒組成物。
[Claims] 1. A refrigerant composition comprising a refrigerant whose chemical formula does not contain a chlorine group and dichloromonofluoromethane. 2. A refrigerant composition comprising chlorodifluoromethane and dichloromonofluoromethane. A refrigerant composition comprising 3,1-chloro-1,1-difluoroethane and dichloromonofluoromethane.
JP1155115A 1989-06-16 1989-06-16 Refrigerant composition Pending JPH0320388A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP1155115A JPH0320388A (en) 1989-06-16 1989-06-16 Refrigerant composition
AU57132/90A AU627587B2 (en) 1989-06-16 1990-06-14 Refrigerant composition
SU904830181A RU2013431C1 (en) 1989-06-16 1990-06-15 Coolant composition
MYPI90001000A MY106740A (en) 1989-06-16 1990-06-15 Refrigerant composition.
DE69012664T DE69012664D1 (en) 1989-06-16 1990-06-15 Cold compositions.
US07/538,617 US5062985A (en) 1989-06-16 1990-06-15 Refrigerant composition containing dichloromonofluoromethane
CA002019096A CA2019096C (en) 1989-06-16 1990-06-15 Refrigerant composition
KR1019900008800A KR960009238B1 (en) 1989-06-16 1990-06-15 Refrigerant composition
EP90111338A EP0402937B1 (en) 1989-06-16 1990-06-15 Refrigerant composition
CN 90104422 CN1033817C (en) 1989-06-16 1990-06-16 Refrigerant composition
BR909002854A BR9002854A (en) 1989-06-16 1990-06-18 REFRIGERANT COMPOSITION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1155115A JPH0320388A (en) 1989-06-16 1989-06-16 Refrigerant composition

Publications (1)

Publication Number Publication Date
JPH0320388A true JPH0320388A (en) 1991-01-29

Family

ID=15598913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1155115A Pending JPH0320388A (en) 1989-06-16 1989-06-16 Refrigerant composition

Country Status (1)

Country Link
JP (1) JPH0320388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351499A (en) * 1992-04-10 1994-10-04 Sanyo Electric Co., Ltd. Refrigerant composition and binary refrigeration system using it

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168979A (en) * 1981-04-07 1982-10-18 Matsushita Electric Ind Co Ltd Absorbent/refrigerant composition
JPS57168980A (en) * 1981-04-07 1982-10-18 Matsushita Electric Ind Co Ltd Absorbent/refrigerant composition
JPS61285A (en) * 1984-06-12 1986-01-06 Sanyo Electric Co Ltd Thermal cycling working medium
JPH01141982A (en) * 1987-11-30 1989-06-02 Asahi Glass Co Ltd Working medium mixture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168979A (en) * 1981-04-07 1982-10-18 Matsushita Electric Ind Co Ltd Absorbent/refrigerant composition
JPS57168980A (en) * 1981-04-07 1982-10-18 Matsushita Electric Ind Co Ltd Absorbent/refrigerant composition
JPS61285A (en) * 1984-06-12 1986-01-06 Sanyo Electric Co Ltd Thermal cycling working medium
JPH01141982A (en) * 1987-11-30 1989-06-02 Asahi Glass Co Ltd Working medium mixture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351499A (en) * 1992-04-10 1994-10-04 Sanyo Electric Co., Ltd. Refrigerant composition and binary refrigeration system using it

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