Methods for Resolving fan/motor Vibration Problems in Air-Conditioning Units: Part I - Analytical Models for Identifying Vibration Modes Excited by Fan Impeller Unbalance
Document Type
Conference Proceeding
Publication Date
10-1-1998
Publication Title
ASHRAE Transactions: Research
Publisher
ASHRAE
First page number:
232
Last page number:
244
Abstract
Vibration modes associated with a fan impeller, motor, and motor mounting assembly in small air-conditioning units can be excited by motor torque pulsations in single-phase motors. Experimental procedures were developed that can be used to measure the torsional resonance frequencies of the stationary parts (motor stator and motor mounting assembly) and the rotating parts (fan impeller and motor rotor and shaft assembly) of a propeller fan assembly. Impact test procedures, test procedures in which the fan motor is set up to act as a torsional shaker, and procedures that employ the use of a microphone in an anechoic room are presented in this paper.
Keywords
Air conditioning; Air-conditioning engineers; Fans (Machinery); Heating engineers; Refrigerating engineers; Vibration
Disciplines
Engineering Mechanics | Materials Science and Engineering | Mechanical Engineering
Language
English
Permissions
Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.
Repository Citation
Teng, C.,
Trabia, M. B.,
Reynolds, D. D.
(1998).
Methods for Resolving fan/motor Vibration Problems in Air-Conditioning Units: Part I - Analytical Models for Identifying Vibration Modes Excited by Fan Impeller Unbalance.
ASHRAE Transactions: Research
232-244.
ASHRAE.