Patent ID: 6237674
Filing Date: 2001-05-29
Classification: F28D

Abstract:
In a rotary regenerative air preheater having a lower end center section, an upper end center section, support pedestals supporting said upper end center section from said lower end center section, a rotor having a lower end and an upper end and an axis of rotation extending between said lower and upper end center sections and a housing arrangement enclosing the periphery of said rotor wherein said housing arrangement comprises:a. a lower end support ring assembly comprising:i. a lower support ring extending around the periphery of said lower end of said rotor and supported at least in part by said lower end center section; andii. a plurality of spokes having outer ends attached at intervals around said lower support ring and extending inwardly below said rotor and having inner ends attached around said axis of rotation to said lower end center section; andb. an upper end support ring assembly comprising:i. an upper support ring extending around the periphery of said upper end of said rotor and supported at least in part by said support pedestals; andii. a plurality of spokes having outer ends attached at intervals around said upper support ring and extending inwardly above said rotor and having inner ends attached around said axis of rotation to said upper end center section; andc. rotor housing panels extending between and around said lower and upper support rings and attached thereto thereby enclosing the periphery of said rotor.