Patent ID: 7077635
Filing Date: 2006-07-18
Classification: F04C

Abstract:
1. A pump for generating pressure and/or negative pressure, comprising a pump chamber having a high-pressure port and a low-pressure port, and two at least two-blade rotors which are mounted in said pump chamber on two parallel shafts offset in relation to each other, said rotors rolling off onto each other free of contact during rotation while forming cells with an internal compression, a supply of a liquid cooling agent is provided to the pump chamber, said supply being closed-loop controlled depending on the temperature on the side of the high-pressure port, and at least one two-component atomizer nozzle for said cooling agent arranged to open into said pump chamber wherein, in addition to the liquid cooling agent, a gaseous volume flow which is branched off from the high-pressure port is supplied to the two-component atomizer nozzle.