An Experimental Study of the Shaft Oil Supply Mechanism of a Rota (1)

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Purdue University

Purdue e-Pubs

International Compressor Engineering Conference School of Mechanical Engineering

1984

An Experimental Study of the Sha Oil SupplyMechanism of a Rotary Compressor

H. Asanuma

T. Itami

H. Ishikawa

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Asanuma, H.; Itami, T.; and Ishikawa, H., "An Experimental Study of the Sha Oil Supply Mechanism of a Rotary Compressor"(1984).International Compressor Engineering Conference. Paper 478.hp://docs.lib.purdue.edu/icec/478
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Ws Tangential speed of shaf te Angle of ro l l e r ro ta t ion

Leakage clearancev Kin ematic v isco s ity P Mass den sity

V iscos ity w Angular ve loc i ty REFERENCES1) M. OZU T. ITAM I some E lec t r ic a l Observations of Meta ll ic Contactbetween Lubrica ted Surfaces underDynamic Conditions of RotaryCompressor, 1980 PurdueCompressorTechnology Conference.2) M. OZU T. ITAM I Effic iency Analysisof Power Consumption in SmallHermetic Refr igeran t RotaryCompressors, IJR, September, 1981.3) T. MATSUZAKA S NAGATOMO RotaryPis ton Type Rotary CompressorPerformance Analysis 1982, Purd ueCompressor TechnologyConference.4) V. L. STREETER E. B. WYLIE Flu id Mechanics Six th Edition Mcgraw-Hill .

387


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Motor DriveUnit ~

Co mpressionMechanism Unit

Fig Rol l ing Pis ton TypeRotary Compressor

r 2 Sh aftt Oil PumpFig 2. Oil Feed Holes of th e Shaft

Fig 3. Rotation of t he Circu la rCyl inder around i t s Axis

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Fig 4. Hea d Measurement Systemo f t he Shaft Oi l Feed

Fig 5 V e l o c i Dis t r ibu t io n ofOil between Rol le r and S haft

F ig 6. Calcu la t ion of h iueto Shaft R otat ion


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F ig .

su

Fig . 8.

Mo o r

FlowMeasurement Systemo f the Shaf tO il Feed

57 z Ro-he Curve48 Hz r-H Curve

0 .5 1 .0 1 .5 Radius (em) rCalcu la t io no fRo byrad ius-head Diagram

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Table 1 . Experimenta l Valu es he andCalcu la tedValu es Rohe and Ro (em)Frequency 48 57(Hz) -he 54 78(Experiment)

Ro 0.30 0.33Calcu la t ion )

Table 2 Comparison o f C a lcu la t ion andExperimentQf (cm3/S )Frequency 48 57(Hz)Calcu la tion 4.4 5 .0(Qf) Experiment 4.1 4.5(Qf)

F ig . Flow Measurement Systemo fMain BearingOil S lo t


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.- Ir

o

0

Calcu la ted Qo f 57 Hz) Calcu la tedQo f 48 Hz- - - - - Calcu la ted Qp f 0 Hz)0 Experimental Qo f 57 Hz)

A Experimental Qo f 48 Hz)) . Experimental Qp f 0 Hz)

------------- 0 --- 6-- o A-- 1 ) - />./'.

50 100 150Head em)Fig . 10. Oil Feed Flaw o f Main BearingOll S lo t , V1scosity - 20 cP

0.- I

o

Ul....

Ei0

: >:0.-I r....-Ir0

0 50 100Head em)Fig . 11. Oil Feed Flow of Main BearingOil S lo t,Viscos ity = 7 cP

Fig . 12. Leakage from Roller

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F ig . 13. Oil Fl ow Measurering Systemunder Dynamic Compres sor

Calculationa t f = 57 z- - - -C a l c u l a t i o n a t f 48 zo Experim ent a t f 57 HzA Experimenta t f 48 z

Fig . 14. Rela t ion between Oil S lo t Areaand Oil Flow Under Dynamic Condition

An Experimental Study of the Shaft Oil Supply Mechanism of a Rota (1)

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