JPH05320680A - Oil composition for refrigerating compressor - Google Patents
Oil composition for refrigerating compressorInfo
- Publication number
- JPH05320680A JPH05320680A JP15424492A JP15424492A JPH05320680A JP H05320680 A JPH05320680 A JP H05320680A JP 15424492 A JP15424492 A JP 15424492A JP 15424492 A JP15424492 A JP 15424492A JP H05320680 A JPH05320680 A JP H05320680A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- viscosity
- oil composition
- refrigerating compressor
- soluble copolymer
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
Landscapes
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍圧縮機の潤滑等に用
いられる冷凍圧縮機用油組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil composition for a refrigerating compressor used for lubrication of a refrigerating compressor.
【０００２】[0002]
【従来の技術及びその課題】近年、冷凍圧縮機は小形、
軽量、低騒音化を指向しており、従来のレシプロタイプ
に代わってロータリタイプが主流になりつつある。この
ため、この冷凍圧縮機の摺動部の潤滑、ガスシール等の
ために摺動部に供給される油には耐熱性、潤滑性等の特
性に加え優れた粘度特性を持つ油種が望まれているが、
現在一般に使用されているナフテン系鉱油、アルキルベ
ンゼン系・エステル系・ポリエーテル系合成油等は粘度
特性の点で満足できない。即ち、従来の油は温度に対す
る粘度変化が大きいので、低温時には粘度が高くなって
圧縮機の負荷増大の原因となる。一方、高温時には粘度
低下が過大となって圧縮機の摺動部のガスシール性、潤
滑性が不十分になるという問題点を抱えていた。2. Description of the Related Art In recent years, refrigeration compressors have been small,
The aim is to reduce weight and noise, and the rotary type is becoming the mainstream instead of the conventional reciprocating type. For this reason, it is desirable that the oil supplied to the sliding part for lubrication of the sliding part of this refrigeration compressor, gas seal, etc. has excellent viscosity characteristics in addition to properties such as heat resistance and lubricity. Although rare,
The naphthene-based mineral oils and alkylbenzene-based / ester-based / polyether-based synthetic oils that are commonly used at present are not satisfactory in terms of viscosity characteristics. That is, since the conventional oil has a large viscosity change with respect to temperature, the viscosity becomes high at low temperatures, which causes an increase in load on the compressor. On the other hand, there is a problem that the viscosity is excessively reduced at high temperature and the gas sealability and lubricity of the sliding portion of the compressor are insufficient.
【０００３】[0003]
【課題を解決するための手段】本発明は上記問題点に対
処するため、高い粘度特性を有し、しかも、低温流動性
に優れた冷凍機用油組成物を提供しようとするものであ
って、その要旨とするところは、アルキルメタクリレー
トを56〜74wt％、スチレンを26〜44wt％の割合で共重合
させることによって得られた油溶性共重合体をナフテン
系鉱油、アルキルベンゼン系・エステル系・ポリエーテ
ル系合成油等からなるベース油に対し１〜10wt％の割合
で添加したことを特徴とする冷凍圧縮機用油組成物にあ
る。In order to solve the above problems, the present invention is intended to provide a refrigerating machine oil composition having high viscosity characteristics and excellent low temperature fluidity. The gist is that the oil-soluble copolymer obtained by copolymerizing alkyl methacrylate at 56-74 wt% and styrene at 26-44 wt% is naphthene-based mineral oil, alkylbenzene-based, ester-based An oil composition for a refrigerating compressor, characterized by being added at a ratio of 1 to 10 wt% with respect to a base oil composed of an ether synthetic oil or the like.
【０００４】[0004]
【実施例】本発明による冷凍圧縮機用油組成物はアルキ
ルメタクリレートを56〜74wt％、スチレンを26〜44wt％
の割合で共重合させることによって得られた油溶性共重
合体をナフテン系鉱油、アルキルベンゼン系・エステル
系・ポリエーテル系合成油等からなるベース油に対し１
〜10wt％の割合で添加することによって構成される。EXAMPLE An oil composition for a refrigeration compressor according to the present invention comprises 56 to 74 wt% of alkyl methacrylate and 26 to 44 wt% of styrene.
The oil-soluble copolymer obtained by copolymerizing at a ratio of 1 to 1 is added to the base oil composed of naphthene-based mineral oil, alkylbenzene-based / ester-based / polyether-based synthetic oil, etc.
It is composed by adding at a rate of ~ 10wt%.
【０００５】上記油溶性共重合体はベース油の粘度特性
を向上するための添加剤として機能し、その化学式は化
１に示される。The above oil-soluble copolymer functions as an additive for improving the viscosity characteristics of the base oil, and its chemical formula is shown in Chemical formula 1.
【化１】 [Chemical 1]
【０００６】この油溶性共重合体はアルキルメタクリレ
ートの優れた粘度特性及び流動点降下能とスチレンの程
良い粘度特性と剪断安定能を程良くバランスして保持し
ているところに最大の特長があり、この特長を発揮させ
るためにはアルキルメタクリレートを56〜74wt％、スチ
レンを26〜44wt％とする必要があり、このときの油溶性
共重合体の分子量Ｍn は20.000〜100.000 となるが、ア
ルキルメクリレートを65wt％前後、スチレンを35wt％前
後とするのが望ましく、このときの油溶性共重合体の分
子量Ｍn は40.000〜50.000となる。This oil-soluble copolymer has the greatest advantage in that it has an excellent balance of the viscosity characteristics and pour point depressing ability of alkyl methacrylate, and the moderate viscosity characteristics and shear stability of styrene, in a good balance. However, in order to bring out this feature, it is necessary to use 56 to 74 wt% of alkyl methacrylate and 26 to 44 wt% of styrene. At this time, the molecular weight Mn of the oil-soluble copolymer is 20.000 to 100.000. It is desirable that the rate is around 65 wt% and the styrene is around 35 wt%, and the molecular weight Mn of the oil-soluble copolymer at this time is 40.000 to 50.000.
【０００７】そして、この油溶性共重合体のベース油に
対する混合比率は１〜10wt％、好ましくは７〜８wt％と
するのが適当である。The mixing ratio of the oil-soluble copolymer to the base oil is 1 to 10% by weight, preferably 7 to 8% by weight.
【０００８】なお、本発明の油組成物に塩酸捕捉剤、酸
化防止剤、極圧剤、消泡剤等の各種添加剤を添加しうる
のは勿論である。Needless to say, various additives such as a hydrochloric acid scavenger, an antioxidant, an extreme pressure agent and an antifoaming agent may be added to the oil composition of the present invention.
【０００９】本発明の油組成物は温度に対する粘度変化
が小さいため、低温でも粘度増加が少なく、従って、冷
凍圧縮機の摺動部の負荷抵抗は小さい。一方、高温域で
はその粘度低下度合が少ないため、粘性が十分に維持さ
れ、冷凍圧縮機の摺動部のガスシール性及び潤滑性を満
足させることができる。従って、冷凍圧縮機の効率及び
信頼性の向上に寄与できる。Since the oil composition of the present invention has a small change in viscosity with respect to temperature, the increase in viscosity is small even at low temperatures, and therefore the load resistance of the sliding portion of the refrigerating compressor is small. On the other hand, in the high temperature range, the degree of decrease in viscosity is small, so that the viscosity is sufficiently maintained, and the gas sealability and lubricity of the sliding portion of the refrigeration compressor can be satisfied. Therefore, it can contribute to the improvement of the efficiency and reliability of the refrigeration compressor.
【００１０】（実施例１）ベース油としてISO UG32相当
のエステル系油を選び、アルキルメタクリレートを65wt
％、スチレンを35wt％の割合で共重合させることによっ
て得られた油溶性共重合体( 分子量Ｍn=40.000〜50.00
0) をベース油に対し７〜８wt％の比率で添加したもの
の動粘度（csf)、粘度特性Ｖ1 、低温流動点( ℃) 及び
剪断安定性(超音波法) を調査した結果が従来品、即
ち、ベース油面と対比して表１に示されている。(Example 1) An ester oil equivalent to ISO UG32 was selected as the base oil, and 65 wt% of alkyl methacrylate was selected.
%, An oil-soluble copolymer obtained by copolymerizing styrene at a ratio of 35 wt% (molecular weight Mn = 40.000 to 50.00
0) was added at a ratio of 7 to 8 wt% to the base oil, the kinematic viscosity (csf), viscosity characteristic V1, low temperature pour point (° C), and shear stability (ultrasound method) were investigated. That is, it is shown in Table 1 in comparison with the base oil level.
【表１】 [Table 1]
【００１１】表１に示す通り従来のベース油の粘度特性
Ｖ1 は98で特に大きい値とは言えない。また、低温時の
流動点も−25.0℃で十分満足できる値ではない。しか
も、剪断安定性( 超音波法) は25.3である。これに対し
て本発明品では粘度特性Ｖ1 として214 の値が得られて
おり、顕著な粘度特性Ｖ1 の向上が認められる。これに
加えて流動点−30.0℃、剪断安定性20.6の値が得られて
いて、それぞれ従来品に比し性能向上が見られる。As shown in Table 1, the conventional base oil has a viscosity characteristic V1 of 98, which is not a particularly large value. Moreover, the pour point at low temperature is not sufficiently satisfactory at −25.0 ° C. Moreover, the shear stability (ultrasonic method) is 25.3. On the other hand, in the case of the product of the present invention, a value of 214 was obtained as the viscosity characteristic V1, and a remarkable improvement in the viscosity characteristic V1 is recognized. In addition to this, a pour point of −30.0 ° C. and a shear stability of 20.6 were obtained, and performance improvements can be seen in comparison with conventional products.
【００１２】[0012]
【発明の効果】本発明の冷凍圧縮機用油組成物は他に悪
影響を及ぼすことなく粘度特性を著しく向上できると同
時に低温流動性、剪断安定性等が向上するので、これを
冷凍圧縮機の摺動部に供給したとき冷凍圧縮機の効率及
び信頼性の向上に資することができる。INDUSTRIAL APPLICABILITY The oil composition for a refrigeration compressor of the present invention can remarkably improve the viscosity characteristics without adversely affecting other properties, and at the same time, improves low temperature fluidity, shear stability and the like. When supplied to the sliding part, it can contribute to the improvement of efficiency and reliability of the refrigeration compressor.
Claims (1)
スチレンを26〜44wt％の割合で共重合させることによっ
て得られた油溶性共重合体をナフテン系鉱油、アルキル
ベンゼン系・エステル系・ポリエーテル系合成油等から
なるベース油に対し１〜10wt％の割合で添加したことを
特徴とする冷凍圧縮機用油組成物。1. 56 to 74 wt% of alkyl methacrylate,
An oil-soluble copolymer obtained by copolymerizing styrene at a ratio of 26 to 44 wt% is used in an amount of 1 to 10 wt% with respect to a base oil composed of naphthene-based mineral oil, alkylbenzene-based / ester-based / polyether-based synthetic oil, etc. An oil composition for a refrigeration compressor, which is added in a ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15424492A JPH05320680A (en) | 1992-05-22 | 1992-05-22 | Oil composition for refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15424492A JPH05320680A (en) | 1992-05-22 | 1992-05-22 | Oil composition for refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05320680A true JPH05320680A (en) | 1993-12-03 |
Family
ID=15579988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15424492A Withdrawn JPH05320680A (en) | 1992-05-22 | 1992-05-22 | Oil composition for refrigerating compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05320680A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017179687A1 (en) * | 2016-04-14 | 2017-10-19 | Ｊｘｔｇエネルギー株式会社 | Refrigerating machine oil |
| WO2018097173A1 (en) * | 2016-11-25 | 2018-05-31 | 出光興産株式会社 | Refrigeration oil and refrigeration oil composition |
| WO2019111752A1 (en) * | 2017-12-05 | 2019-06-13 | 株式会社Adeka | Friction-controlling compound, and friction-controlling composition containing said friction-controlling compound |
| US10400191B2 (en) | 2014-05-22 | 2019-09-03 | Jxtg Nippon Oil & Energy Corporation | Refrigerating machine oil, and working fluid composition for refrigerating machines |
-
1992
- 1992-05-22 JP JP15424492A patent/JPH05320680A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10400191B2 (en) | 2014-05-22 | 2019-09-03 | Jxtg Nippon Oil & Energy Corporation | Refrigerating machine oil, and working fluid composition for refrigerating machines |
| WO2017179687A1 (en) * | 2016-04-14 | 2017-10-19 | Ｊｘｔｇエネルギー株式会社 | Refrigerating machine oil |
| US10913918B2 (en) | 2016-04-14 | 2021-02-09 | Eneos Corporation | Refrigerating machine oil |
| WO2018097173A1 (en) * | 2016-11-25 | 2018-05-31 | 出光興産株式会社 | Refrigeration oil and refrigeration oil composition |
| WO2019111752A1 (en) * | 2017-12-05 | 2019-06-13 | 株式会社Adeka | Friction-controlling compound, and friction-controlling composition containing said friction-controlling compound |
| JPWO2019111752A1 (en) * | 2017-12-05 | 2020-10-08 | 株式会社Adeka | A friction suppressing compound and a friction suppressing composition containing the friction suppressing compound. |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990803 |