| 摘要 |
The invention relates to the cooling for a screw pump for the delivery and compression of gases, wherein the rotors (1) have previously known internal cooling (7). In order to increase the operational reliability and improve the application-specific adaptation, and also in order to reduce the noise, according to the invention the coolant, preferably oil, is not only continuously introduced to the two coolant supplies (21) for internal rotor cooling (7) by way of the coolant pump (10), but the coolant is also continually delivered through the flow chambers (11) in the pump housing (2) and dissipates the heat thereof by way of the coolant pump (10), the cooling air flow over the screw pump is eliminated, the entire machine is preferably enclosed with a noise absorbing material (15), and the heat dissipation for the coolant is carried out by way of a dedicated heat exchanger (16), preferably a separate standard industry oil cooler, either water-cooled or designed as a sufficiently known oil/air cooler, wherein in order to further reduce the noise the necessary cooling fan (14) for said oil/air heat exchanger (16) runs at a reduced rotational speed in that the belt drive (18) between the driving motor (17) and the pump drive shaft (6) with the contrate or bevel gear mechanism (5) is designed such that the driving motor (17) rotates at a lower rotational speed than the pump drive shaft (6), wherein the temperature level of the screw pump can be set in a targeted manner by simple dimensioning of the dedicated heat exchanger accordingly, and the user is additionally provided with the possibility of specifically defining the direction of the heat dissipation by the ability to freely position the heat exchanger (16) and corresponding connecting lines (13 and 19) for the coolant between said dedicated coolant heat exchanger and the screw pump. |
