Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

Rotary compressor(Fig.1) has been improved in performance by reducing clearances between the roller piston and either the cylinder or sub-bearings which play a key role in the leakage of the compressed refrigerant gas. However, reducing the clearances increases friction loss due to the boundary lubrication between the rolling piston and the cylinder of the rotary compressor. Therefore it is necessary that an optimal clearance height should be determined by balancing two factors, the leakage and the friction. It is difficult, however, to measure the clearance height using conventional contact type measurement techniques such as gap gauge because clearances are not accessible and, more importantly, their sizes change when the compressor is assembled, especially bolted.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 7: New Inspection/Control Procedures

Section

Process Modeling/Control

Pages

1891-1898

DOI

10.1007/978-1-4615-5339-7_245

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Measurement of Clearances of a Rolling-Piston Type Rotary Compressor

La Jolla, CA

Rotary compressor(Fig.1) has been improved in performance by reducing clearances between the roller piston and either the cylinder or sub-bearings which play a key role in the leakage of the compressed refrigerant gas. However, reducing the clearances increases friction loss due to the boundary lubrication between the rolling piston and the cylinder of the rotary compressor. Therefore it is necessary that an optimal clearance height should be determined by balancing two factors, the leakage and the friction. It is difficult, however, to measure the clearance height using conventional contact type measurement techniques such as gap gauge because clearances are not accessible and, more importantly, their sizes change when the compressor is assembled, especially bolted.