Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1996-07-19
2000-01-25
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 555, 418 57, 29888022, F04C 1804
Patent
active
060172037
ABSTRACT:
A high-performance and high-reliability scroll compressor which prevents seal property failure at seal necessary points, tooth tip contact, abnormal wear of an elastic body, fatigue failure, etc. A radially outward peripheral projection (4c) is formed on the full outer peripheral surface of a separation plate (4). The peripheral projection (4c) is set to an outer diameter reduced, relative to the inner diameter of the shell main body (9) before a shell lid (20) is sealed by welding, etc., by the dimension corresponding to the shrinkage amount of a shell main body (9). That is, before welding, a minute gap occurs between the outer peripheral surface of the peripheral projections (4c) and the inner peripheral surface of the shell main body (9). Then, the separation plate (4) is inserted into the shell main body (9) and further the separation plate (4) and a frame (3) are fixed. After this, when the shell main body (9) and the shell lid (20) are welded, because of shrinkage of the shell main body (9) after the welding, the outer peripheral surface of the peripheral projections (4c) of the separation plate (4) comes in tight contact with the inner peripheral surface of the shell main body (9), whereby the space is partitioned and sealed between a high pressure space (30) and a low pressure space (31).
REFERENCES:
patent: 5141420 (1992-08-01), Nambiar
patent: 5240391 (1993-08-01), Ramshankar et al.
Patent Abstracts of Japan, vol. 10, No. 196 (M-497), Jul. 10, 1986, JP 61 040473, Feb. 26, 1986.
Hara Shoichiro
Ikeda Kiyoharu
Kosone Nobukazu
Matsugi Tetsuzou
Sugawa Masaaki
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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