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US 9,080,571 B2Granted
Pump enveloped with thermally conductive material
AssigneeEdwards Limited
InventorsStephen Edward Downham, David Paul Manson, Huw David Powell
Life of this patent
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AssigneeEdwards Limited
InventorsStephen Edward Downham, David Paul Manson, Huw David Powell
Estimating the term…
A pump comprises a rotor arrangement and a stator arrangement. The stator arrangement comprises a first part made from a corrosive resistant material which defines a volume which in use is swept by the rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement. A second part of the stator arrangement is made from a thermally conductive material which envelopes the first part so that heat generated in the first part can be transferred to the second part at the interface surface between the two parts. The second part has formed therein at least one duct for conveying a liquid coolant through the second part so that heat can be transferred from the second part to the liquid coolant for cooling the stator arrangement.
A vacuum pump comprising a rotor arrangement and a stator arrangement, the stator arrangement comprising a first part made from one of SG iron and Ni-resist iron and having a thickness greater than one centimeter and defining a volume which in use is swept by the rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement, and a second part made from aluminium cast over and enveloping the first part so that heat generated in the first part is transferred to the second part at the interface surface between the two parts, the second part cast over at least one tube for conveying a liquid coolant through the second part so that heat is transferred from the second part to the liquid coolant for cooling the stator arrangement.
A vacuum pump stator arrangement comprising a first part made from a corrosive resistant material having a thickness greater than one centimeter and defining a volume which in use is swept by a rotor arrangement for pumping fluid from an inlet to an outlet of the stator arrangement, and a second part made from a thermally conductive material which envelopes the first part so that heat generated in the first part is transferred to the second part at the interface surface between the two parts, the second part having formed therein at least one duct for conveying a liquid coolant through the second part so that heat is transferred from the second part to the liquid coolant for cooling the stator.
A method of manufacturing a stator slice for a stator arrangement comprising steps of:
Dependencies are inferred from the claim text.