SCROLL COMPRESSOR

• Main Authors: YOSUKE YOSHINOBU, KAWAMOTO TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 30.11.2017
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

PROBLEM TO BE SOLVED: To provide a scroll compressor according to the present invention that restrains seizing of sliding surfaces of an Oldham's coupling and a movable scroll, and has a high reliability.SOLUTION: A scroll compressor 101 comprises: a movable scroll 26 including first key grooves 26d; a housing 23 including second key grooves 23d; and an Oldham's coupling 39 between the movable scroll 26 and the housing 23. The Oldham's coupling 39 comprises: an annular body part 39a; two pairs of first key parts 39b fitted in the first key grooves 26d; and second key parts 39c fitted in the second key grooves 23d. Key gaps 70 are formed between outer peripheral surfaces of the first key parts 39b and inner peripheral surfaces of the first key grooves 26d. The key gaps 70 comprise: first gaps 71 radially inside the Oldham's coupling 39; and second gaps 72 radially outside it. The second gaps 72 are wider than the first gaps 71, and therefore can hold a larger amount of lubricating oil than the first gaps 71.SELECTED DRAWING: Figure 9 【課題】本発明に係るスクロール圧縮機は、オルダム継手および可動スクロールの摺動面の焼き付きを抑制して、高い信頼性を有する。【解決手段】スクロール圧縮機１０１は、第１キー溝２６ｄを有する可動スクロール２６と、第２キー溝２３ｄを有するハウジング２３と、可動スクロール２６とハウジング２３との間のオルダム継手３９とを備える。オルダム継手３９は、環状本体部３９ａと、第１キー溝２６ｄに嵌め込まれる２対の第１キー部３９ｂと、第２キー溝２３ｄに嵌め込まれる第２キー部３９ｃとを有する。第１キー部３９ｂの外周面と、第１キー溝２６ｄの内周面との間には、キー隙間７０が形成される。キー隙間７０は、オルダム継手３９の径方向内側の第１隙間７１と、径方向外側の第２隙間７２とを有する。第２隙間７２は、第１隙間７１よりも広いので、第１隙間７１よりも多量の潤滑油を保持することができる。【選択図】図９