Pump and method

Abstract

An anti-icing system comprises a pump and a circulation network, the pump pumping a liquid through the circulation network, wherein the pump is configured to generate heat during operation as a result of viscous shear in the pumped liquid, the heat being sufficient to provide a pre-selected anti-icing heat load to the liquid.

Description

[0001] This is a Continuation of Applicant's U.S. patent application Ser. No. 11 / 017797 filed on Dec. 22, 2004.FIELD OF THE INVENTION [0002] The present invention relates to a pump used for pumping liquid. BACKGROUND OF THE INVENTION [0003] Electrically driven helix-type pumps are known. Permanent magnet pumps are also known. for example, a centrifugal blood pump is disclosed in U.S. Pat. No. 5,049,134 and an axial blood pump is disclosed in U.S. Pat. No. 5,692,882. In general, these and other helix pumps rely on friction or fluid dynamic lift to move fluid axially though the pump. That is, although the helix rotates, the liquid is rotationally relatively stationary as it moves axially along the length of the pump. While perhaps suited for pumping blood and other low speed and low pressure application, these devices are unsuitable for other environments, particularly where high speed and high pressures are desired. Room for improvement is therefore available. SUMMARY OF THE INVENTIO...

AI Technical Summary

Benefits of technology

The pump achieves high flow rates and pressures with reduced energy loss, operates efficiently at high speeds, and eliminates the need for bearings, offering improved reliability and lower costs while maintaining laminar flow for effective liquid circulation.

Problems solved by technology

While perhaps suited for pumping blood and other low speed and low pressure application, these devices are unsuitable for other environments, particularly where high speed and high pressures are desired.

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