Patent ID: 7112046

Claim:
Compressor for refrigerant, comprising: an outer housing, a scroll compressor which is disposed in the outer housing and has a first compressor body, which is fixedly disposed in the outer housing, and a second compressor body, which is movable in relation to the first compressor body, each of these bodies having a base and respective first and second scroll ribs, which rise above the respective base and engage in one another in such a way that, for the compression of the refrigerant, the second compressor body is movable on an orbital path about a center axis with respect to the first compressor body, thereby forming chambers, an outlet in the base of the first compressor body, leading to a high-pressure chamber in the outer housing, a check valve disposed between the outlet and the high-pressure chamber, with a valve body which is freely movable in a movement space extending between a valve seat and a valve guard, between a closed position, determined by the valve seat, and an open position, determined by the valve guard, and comprising a pre-chamber having a greater cross-sectional area than the outlet, said pre-chamber being disposed between the valve seat and the outlet.