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Oilless and frictionless compressor with double-sided rotationally oscillating piston

Chomczyk W., Ostapski W., Piotrowski J., Tataj T.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2013

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Vol. 61, nr 2

485--498

EN

The contents are concerned with a concept of an oilless and frictionless compressor operating without dead movement and having functional parameters superior to compressors of renowned manufacturers. The concept is based on patents No. 68220, 83060, P377851 by W. Chomczyk and patents P394072, P385733 by W. Chomczyk, W. Ostapski and J. Piotrowski. The proposed design of an oilless compressor ensures volumetric efficiency higher than that encountered in conventional compressors. It also generates pure compressed medium without necessity of filtering from oil particles, which is especially desired in food, pharmaceutical, medical, fragrance, chemical and automation industry.

2

Blade-type piston compressor investigation of seals

Kalina P., Chomczyk W., Irzycki A., Snopkiewicz K.

Journal of KONES

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2010

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Vol. 17, No. 1

199-204

EN

The paper presents the test results of selected seals applied in the blade-type piston compressor designed and realized in Propulsion Department of Institute of Aviation according to Patent No 6822 specification. Principle of operation of the compressor and the construction of test stand utilized to the seals testing were presented in the paper published in the Journal of KONES 2009. The special blade-type piston realizes a pendulous movement in the circular cylinder divided into two bulkheads. Each of bulkheads, fitted out with a set of bidirectional operating valves, creates by sequential opening and closing of them two compression chambers for one blade. Comprehensive tests of different kinds of seals were carried out on a single-compression machine driven by pneumatic actuator. The pressure rise vs. blade movement and drop of pressure when the piston was stayed at top dead centre were measured. The results of leak tightness of other structures of blade-type piston were analyzed as well and are subject to the following paper. The new design of piston relied on fitting-out of piston with side disc was prepared with intention of eliminating the loss of usable pressure in compression chamber, especially in area of top dead centre. The proposed design eliminated the leaks on the drive shaft and lateral seals, but not on the cylindrical surface of disco.

3

Blade piston compressor

Kalina P., Chomczyk W., Irzycki A., Snopkiewicz K.

Journal of KONES

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2009

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Vol. 16, No. 3

157-163

EN

The paper describes the principles of building and working of new blade piston compressor. dynamic force analysis of assembly of crankshaft and first research results are also presented. The working principle of this compressor was patented by prof. W. Chomczyk. The piston, in shape of a blade, executes a pendulum movement in a circular cylinder. The two bulkheads with valves create four compression chambers for one piston. The compressor features compactness of construction and high efficiency. The lack of side thrust of the piston on cylinder surface is a major advantage of the construction. The lack of friction between crown and cylinder makes it possible to build an oil-free compressor. The strength calculation of chosen elements was executed in MES (Cosmos WORKS program). The acceleration of piston was a parameter which was optimized. The investigation of different tightening was conducted on a single-compression machine. The single compression machine was driven by pneumatic actuator having the task of imitation of piston movement during the compression cycle. The results of investigations of labyrinth seals are described in the paper. The compressor can find use in truck and bus aggregate drives. Paper present analysis of crank and crosshead mechanism 's kinematics, and dynamic loads, strength analysis of compressor components and construction of compressor.

4

Szczelinowo-zaworowy rozrząd w sprężarkach tłokowych

Chomczyk W., Siemieniako F.

Pneumatyka

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2002

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nr 4

36-37

PL

W artykule przedstawiono zasadę działania rozrządu szczelinowo-zaworowego w sprężarkach tłokowych. Prezentowane rozwiązanie zostało zrealizowane, a prototypowe egzemplarze sprężarek przebadano. Wyniki badań prototypowych sprężarek chłodniczych pozwoliły określić cechy eksploatacyjne.