Fluid heating methods and devices

摘要

A heating pump 10 includes a rotor 20 having a plurality of blades 21. A dividing wall 15 radially extends within an interior portion of the heating pump 10. The dividing wall 15 has a width W. A distance L is defined along a circular arc between adjacent blades 21 in an intermediate position 21a along the radial direction of the blades 21. A ratio W/L is preferably about 0.07 to 0.36, more preferably about 0.11 to 0.30 and most preferably, about 0.20.