A device to make the pressure in a pressure chamber and in a suction chamber of a compressor substantially equal during the initiation of the operation of the pumping media. (Machine-translation by Google Translate, not legally binding)

摘要

A device for causing pressure in a pressure chamber and in a suction chamber, of a compressor having means defining a pressure chamber, means defining a suction chamber, and means for pumping fluid from said suction chamber to said pressure chamber, is substantially equal during the initiation of the operation of said pumping means and which allows the chambers to have a pressure difference between them during the subsequent operation of the pumping means, characterized in that it comprises: means that define a compensation step between said suction chamber; means for closing said compensation passage as a result of the initiation of operation of said pump means including valve means having a movable valve member for selectively closing said compensation passage, and means for loading said valve member for opening said compensation step when the pumping means do not work; and means for applying pressure developed by the operation of said pumping means to said valve means to move said valve member in a delayed manner in opposition to said loading means to close said compensation passage after a preselected period of time. (Machine-translation by Google Translate, not legally binding)