Cooled screw vacuum pump
First Claim
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1. A screw vacuum pump, comprising:
- two shafts, each bearing a rotor containing a first hollow chamber;
said first chambers each containing a second hollow chamber which defines a coolant channel;
the shafts have open bores on a delivery side, through which inflowing coolant is supplied to and outflowing coolant is evacuated from the second hollow chambers;
guide components located in the open bores of the shafts, said guide components separately guiding the inflowing and outflowing coolant.
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Abstract
The invention relates to a screw vacuum pump, comprising two shafts (7, 8), each bearing a rotor (3, 4) containing a hollow chamber (31). Said chamber (31) contains a second hollow chamber (32) which embodies a component of a coolant circuit. The shafts (7, 8) have open bores (41) on the delivery side, through which the coolant is supplied and evacuated to or from the additional hollow chambers (32). In order to improve the effectivity of the cooling of the rotors, guide components (44) are located in the open bores (41) of the shafts (7, 8). Said guide components separately guide the inflowing and outflowing coolant.
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Citations
20 Claims
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1. A screw vacuum pump, comprising:
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two shafts, each bearing a rotor containing a first hollow chamber;
said first chambers each containing a second hollow chamber which defines a coolant channel;
the shafts have open bores on a delivery side, through which inflowing coolant is supplied to and outflowing coolant is evacuated from the second hollow chambers;
guide components located in the open bores of the shafts, said guide components separately guiding the inflowing and outflowing coolant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification