Patent ID: 6035926
Filing Date: 2000-03-14
Classification: F28D

Abstract:
A rotary regenerative heat exchanger comprising:an inner cylindrical hub provided in a vertical position;a rotor containing a heat exchange medium;first attachment members for attaching said rotor to said hub;a stationary casing surrounding said rotor;a bearing journalling a lower end of the hub;a slow moving hydraulic motor adapted to slowly turn the hub, said motor being provided with a housing enclosing a built-in radial bearing and coaxially therewith a cylinder block and cam surface arrangement comprising a circular cylinder block and a cam surface surrounding the cylinder block and cooperating with a piston mechanism of the cylinder block such that reciprocation of the piston mechanism causes relative motion between the cylinder block and the cam surface; andsecond attachment members for attaching said motor to the stationary casing and to the hub, respectively,wherein an upper bearing of the hub consists only of a combination of said built-in radial bearing of the motor and said cylinder block and cam surface arrangement.