Authors

The consequences of misalignment of the spiral elements in the compressor

DOI: 10.17586/1606-4313-2023-22-4-28-32
UDC 621.5.041

The consequences of misalignment of the spiral elements in the compressor

Kosachevsky V. A.

For citation: Kosachevsky V.A. The consequences of misalignment of the spiral elements in the compressor. Journal of International Academy of Refrigeration. 2023. No 4. p. 28-32. DOI: 10.17586/1606-4313-2023-22-4-28-32

Abstract
The article concerns the issue of possible inconsistency of working elements in a scroll compressor or any other spiral machine that may occur during the assembly of a system of working scroll. The concept of misalignment is defined as a discrepancy, a linear shift along the polar radius with some perturbation or deviation of the orbital angle of a moving scroll. A variant of estimating the degree of mismatch is proposed. Expressions are obtained allowing to estimate the numerical values of the residuals depending on the magnitude of the deviation in the orbital angle. Calculations have been carried out to indicate the maximum value of such deviations.

Keywords: scroll compressors, the principle of operation of the SEC, working elements, misalignment of scrolls, angular perturbation of the scroll orbit, radial discrepancy.

All references

1. Raikov A.A., Bronstein M.D., Burmistrov A.V., Salikeev S.I. Analytical method for calculating forces and moments in oil-free spiral vacuum pumps and compressors. Izvestiya vysshochnykh uchebnykh zavedeniy. Mechanical engineering. 2014. No.7(652). pp. 35-42.(in Russian)

2. Ivlev V.I., Misyurin S.Yu. Computational and experimental characteristics of a spiral machine operating in the gas motor mode. DAN. 2017. vol. 472. No. 3. pp. 278-281.(in Russian)

3. Orosz Matthew S., Mueller Amy V., Dechesne Bertrand J., Hemond Harold F. Geometric design of scroll expanders optimized for small organic Rankine cycles. ASME Journal of engineering for gas turbines and power.April 2013. 135(04).

4. Accorsi Felipe A., James Nelson A., Groll Eckhard, Horton William T., Braun James E. Experimental Testing and Modeling of 5 kW Oil-Free Open Drive Scroll Expander Using R245fa. Proc. ICEC at Purdue Univ., 2016.P. 2482.

5. Hesse Jan, Andres Raine. CFD Simulation of a Dry Scroll Vacuum Pump Including Leakage Flows.Proc. ICEC at Purdue Univ.,2016,July 11-14.

6. Kosachevsky V.A. On the geometry of the working elements of a spiral compressor. Compressor technology and pneumatics. 1994. issue 4-5. p. 49. (in Russian)

7. Kosachevsky V.A. On the mathematical model of the working process of a spiral compressor. Compressor technology and pneumatics. 1997. issue 1-2 (14-15). p. 40. (in Russian)

8. Kosachevsky V.A. On the cut-off angle for the wraps of scroll compressors. An analytical approach. Journal of International Academy of Refrigeration. 2020. No 2. p. 26-30. (in Russian)

9. Kosachevsky V.A. Scroll compressors capacity. Journal of International Academy of Refrigeration. 2016. no 4. p. 40-46.(in Russian)

10. Efremov S.N., Shostakovich I.A. Profile calculation of forming coils of a refrigerating compressor. Vestnik SevSTU. Ser. Mechanics, energy, ecology: collection of scientific tr. 2005. Issue 67. pp. 148-153. (in Russian)

11. Efremov S.N. Analysis of refrigerant leaks in spiral refrigeration compressors. Vestnik SevSTU. Ser. Mechanics, energy, ecology: collection of scientific tr. 2008. Issue 87. pp. 107-110. (in Russian)

12. Uchikawa N., Terada H., Arata T. Scroll compressors for air conditioners. Hitachi Rev., 1987. 36. no 3. p. 155.

Read the full article