COMPRESSOR AND REFRIGERATION DEVICE

• Main Authors: ENDO TAKESHI, MURAKAMI YASUHIRO, MORI AKIRA, MIZUSHIMA YASUO
• Format: Patent
• Language: English; Japanese
• Published: 06.02.2024
• 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

To reduce noise of compressor.SOLUTION: A compressor (10) comprises: a casing (20) including a cylindrical trunk (20a); a fixture target member (F) which is fixed to the trunk (20a); and a plurality of weld parts (80) provided in a circumferential direction of the trunk (20a), the plurality of weld parts (80) connecting the trunk (20a) with the fixture target member (F). An inner diameter of the trunk (20a) and an outer diameter of the fixture target member (F) in a rating operation state of the compressor (10) are in a fitting relation that a combination (hole/shaft) of a tolerance class of a hole and a tolerance class of a shaft, which are determined by ISO286, corresponds to H8/f7, F8/h9, H7/f7, F8/h6, H7/g6 or G7/h6.SELECTED DRAWING: Figure 5 【課題】圧縮機の騒音を低減する。【解決手段】圧縮機（10）は、筒状の胴部（20a）を有するケーシング（20）と、胴部（20a）に固定される固定対象部材（F）と、胴部（20a）の周方向に複数設けられた溶接部（80）であって、胴部（20a）と固定対象部材（F）とを繋ぐ複数の溶接部（80）とを備える。圧縮機（10）の定格運転状態における胴部（20a）の内径と固定対象部材（F）の外径とは、ＩＳＯ２８６にて定められる穴の公差クラスと軸の公差クラスとの組み合わせ（穴／軸）が、Ｈ８／ｆ７、Ｆ８／ｈ９、Ｈ７／ｆ７、Ｆ８／ｈ６、Ｈ７／ｇ６、又はＧ７／ｈ６に対応する嵌め合い関係である。【選択図】図５