Scroll compressor having separation plate between high and low p

Details Scroll compressor having separation plate between high and low p Scroll compressor having separation plate between high and low p

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.

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