Brandon E Harmer

US Patent:

20210017948, Jan 21, 2021

Filed:

Feb 28, 2019

Appl. No.:

17/040296

Inventors:

- HEIDENHEIM, DE
JASON FOUST - JACOBUS PA, US
JESSE ZOLL - MOUNTVILLE PA, US
STEVEN MCHALE - HARRISBURG PA, US
JIANBO JIANG - YORK PA, US
BRANDON HARMER - YORK PA, US

International Classification:

F03B 3/12
F03B 11/00
F04D 29/18

Abstract:

A runner for a hydraulic turbine or pump includes a plurality of blades, each blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge. At least one blade has a device for supplying a flow of oxygen containing gas to the trailing edge of at least one of the blades. The profile of the suction side surface of the blade along a cross section through a point P and a point P is concave. The point P is located on the suction side surface of the trailing edge where an opening is located, the point P is spaced apart from the point P by less than 3% of the runner outlet diameter D and the point P is located upstream of the point P on a line perpendicular to the trailing edge starting at the point P

US Patent:

20200362811, Nov 19, 2020

Filed:

Aug 9, 2018

Appl. No.:

16/636839

Inventors:

- HEIDENHEIM, DE
BRANDON HARMER - YORK PA, US
JESSE ZOLL - MOUNTVILLE PA, US

International Classification:

F03B 3/02
F03B 11/00

Abstract:

A hydraulic machine has a runner of the Francis type, a head cover and a lower cover. A crown has a seal that seals the space between the crown and the head cover against water from the high pressure side. The runner is formed with at least one passage that is capable to drain high pressure leakage water passing the seal to the low pressure side. The passage is formed with an inlet aperture located in a portion of the crown which during operation is exposed to high pressure leakage water. The passage is located within one of the blades and leads from the inlet aperture to the band, where the passage forms an opening leading to the space between the band and the lower cover. The head cover is formed with an air inlet to admit air to the chamber between the head cover and the crown.