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Abstract

A motor compressor unit was built and tested, based on a Ficht crank motor system, whereby only linear movements are produced by the pistons and the piston rods. Much attention was given to the development of the piston gasket on the compressor side, because of the need for a hermetic seal between the coolant circulation and the surrounding air. Experiments using gas for the operation of the driving motor were carried out on a separate two-cylinder motor. In earlier work performed with various manufacturers of gaskets and compensators, a metallic membrane seal was developed which theoretically fulfilled the conditions with respect to durability and airtightness. The practical experiments showed that such metallic membrane seals in a specific configuration can be designed on a long-life basis, even for such large pistons as are needed for compressor operation.

Additional information

Authors: HAMANN L, FICHT GmbH, Kirchseeon (DE);SCHIMMER W, FICHT GmbH, Kirchseeon (DE)
Bibliographic Reference: EUR 13533 DE (1991) 3 pp., MF, ECU 4, blow-up copy ECU 5
Availability: (2)
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