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1. (WO2017016642) DEVICE FOR INCREASING THE PRESSURE OF A FLUID, HAVING A PRESSURE-LIMITING VALVE

Pub. No.:    WO/2017/016642    International Application No.:    PCT/EP2016/001197
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Wed Jul 13 01:59:59 CEST 2016
IPC: F04B 43/00
F04B 43/067
F04B 45/053
F16K 17/04
Applicants: LINDE AKTIENGESELLSCHAFT
Inventors: ADLER, Robert
STEPHAN, Markus
STEFAN, Michael
NAGL, Christoph
Title: DEVICE FOR INCREASING THE PRESSURE OF A FLUID, HAVING A PRESSURE-LIMITING VALVE
Abstract:
The invention relates to a device (1) for increasing the pressure of a fluid, having a pressure-limiting valve (18). The pressure-generating device (1) is designed as a diaphragm compressor having two diaphragms (6, 7). The diaphragms (6, 7) are actuated by means of a displacement piston (9), which is supported in a hydraulic fluid chamber (8) in a translatory manner. The displacement piston (9) is actuated by means of an eccentric (10) supported on a drive shaft (11). In order to avoid possible damage to the diaphragm layers (6, 7), the pressure-increasing device (1) has a pressure-limiting valve (18), which is actuated and limits the pressure when a maximum pressure is exceeded within the hydraulic fluid chamber (8). The pressure-limiting valve (18) has a piston (22), which is preloaded against the hydraulic fluid chamber (8) by a preloading means (35). Furthermore, the pressure-limiting valve (18) has a closing means (26a), against which the preloading means (35) is supported. The pressure-increasing device (1) is used as a compressor for compressed-gas cylinders (2).