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Title:
RECIPROCATING COMPRESSOR AND REFRIGERATOR USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/093249
Kind Code:
A1
Abstract:
Abrasion resistance of a reciprocating compressor which uses isobutene as a coolant is improved and a high-efficiency refrigerator which uses the reciprocating compressor is realized. Refrigerator oil, which comprises primary refrigerator oil that contains monoester oil or polyol ester oil and which comprises secondary polyol ester oil that is added to the primary refrigerator oil, is sealed in the reciprocating compressor which uses isobutene as a coolant. The amount of the secondary polyol ester oil composition is 1 to 30 wt%. Dynamic viscosity of the primary refrigerator oil at 40ºC is preferably 10 mm2/s or less, while dynamic viscosity of the secondary polyol ester oil at 40ºC is 130 mm2/s or greater.

Inventors:
OTA, Ryo (HITACHI LTD., 1-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
太田 亮 (〒92 茨城県日立市大みか町七丁目1番1号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
SUGANO, Tsuneji (INC. 800, Oaza Tomida, Ohira-machi, Tochigi-sh, Tochigi 93, 〒3294493, JP)
菅野 典伺 (〒93 栃木県栃木市大平町大字富田800番地 日立アプライアンス株式会社内 Tochigi, 〒3294493, JP)
ARAKI, Kuninari (INC. 800, Oaza Tomida, Ohira-machi, Tochigi-sh, Tochigi 93, 〒3294493, JP)
荒木 邦成 (〒93 栃木県栃木市大平町大字富田800番地 日立アプライアンス株式会社内 Tochigi, 〒3294493, JP)
Application Number:
JP2011/051257
Publication Date:
August 04, 2011
Filing Date:
January 25, 2011
Export Citation:
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Assignee:
HITACHI APPLIANCES, INC. (16-1, Kaigan 1-chome Minato-k, Tokyo 22, 〒1050022, JP)
日立アプライアンス株式会社 (〒22 東京都港区海岸一丁目16番1号 Tokyo, 〒1050022, JP)
OTA, Ryo (HITACHI LTD., 1-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
太田 亮 (〒92 茨城県日立市大みか町七丁目1番1号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
SUGANO, Tsuneji (INC. 800, Oaza Tomida, Ohira-machi, Tochigi-sh, Tochigi 93, 〒3294493, JP)
菅野 典伺 (〒93 栃木県栃木市大平町大字富田800番地 日立アプライアンス株式会社内 Tochigi, 〒3294493, JP)
ARAKI, Kuninari (INC. 800, Oaza Tomida, Ohira-machi, Tochigi-sh, Tochigi 93, 〒3294493, JP)
International Classes:
C10M169/04; C09K5/04; F25B1/00; C10M105/34; C10M105/38; C10M129/74; C10N20/00; C10N20/02; C10N30/00; C10N30/06; C10N40/30
Attorney, Agent or Firm:
POLAIRE I.P.C. (7-1 Hatchobori 2-chome, Chuo-ku Tokyo, 32, 〒1040032, JP)
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