VALVE ARRANGEMENT FOR A SCROLL REFRIGERATION COMPRESSOR

摘要

The invention relates to a valve arrangement comprising: a valve plate (26) including (i) a delivery port (27) intended to allow the flow of fluid from a delivery line provided in a volute of the compressor and (ii) a valve seat (28) provided on a first face of the valve plate; a delivery valve (29) which can move between a delivery port (27) closing position and a port opening position; and retaining means (30) arranged to limit the range of movement of the delivery valve (29). The arrangement also comprises: at least one bypass valve (39) disposed adjacent to a second face of the valve plate (26), said bypass valve (39) being able to move between a position comprising the closing of a bypass channel (34) provided in the plate of the volute and a position comprising the opening of said bypass channel; and retaining means disposed on the second face of the valve plate (26) and arranged to limit the range of movement of the bypass valve.