| Scroll compressor is a new type compressor that is developed recently. It has characteristics of high efficiency, consuming little energy, working smoothly, low noise, small size, light weight and compact structure. Scroll compressor has the advantage of reciprocating type as well as rolling pistion type compressor. So it is becoming a hot research topic of local and foreign compressor industry. However, the design of scroll compressor is still based on experience. The cycle of design is long, the precision is low and the parameters are not easy to determine.In order to improve the efficiency of design, breaking the foreign forestallment of theories and technologies, in this paper, the working process of scroll compressor is studied in detail, including a new method of constructing scroll profile, parameters optimization, meshing analysis and dynamic characters analysis.After the studying and analysis for scroll compressor, as a project of province class(No:7520), a new type of extend modified academic scroll profile base on three basic circle is presented and apply for the a national inventional patent(appliction number of the patent:200410022526.6). A whole geometric theory for the scroll chamber working process is setted up. Dayamic study is processed. Back-pressure and the positions of back-pressure hole and the principle and theoretical positions of the discharge ports were presented. We developed a CAD system for scroll compressor. The scroll compressor calculator assistance design system makes scroll compressor matched from the linear design and the analysis of meshing to analyze the solution dynamics problem, the linear number in then born type controls to process the procedure, realizes design, analysis, manufacturing the integral whole turns. The study in this paper included:1) Aim at Scroll-compressor key skills, this paper concerns the modified question of the wrap about the end of the scroll profile, work over a new type of extend modified academic scroll profile base on three basic circle, and apply for the a national inventional patent(appliction number of the patent:200410022526.6). The new type of the scroll profile can not only have a high compress ratio and have a strong intensity, buy also breakthrough the limitation of Japanese patent which involved that the modified center of the circle can only at the tangent of the main scroll profile. The Japanese patent is the special example when the parameter D=0, W =0.2) A whole geometric theory for the scroll chamber working process is setted up. These theories the dimension of scroll chamber with the meshing of Orbiting Scroll and fixating scroll. With the changing of the scroll profile types, the diffenent equation is presented. It was becoming the theory base for scroll compressor designer.3) Dayamic study is processed. Follow up the scent of the brace wheeling period , put forward the changing equation of The pressure of scroll chambers the force of axis the force of radial the force of tangents inertial force the composition of forces and the inertial moment with the brace wheeling. All these can provide design parameter and load calculating for power matching intension design.4) Based on the study of geometric theory and dayamic, the choice of back-pressure and the positions of back-pressure hole is presented. It is a key question for back-pressure. Because the study of these were not regarded, it is difficult for the choice of back-pressure and the positions of back-pressure hole. After this paper's studying, we can solve this question quickly and exactness.5) Based on the new scroll profile, through the detail mathematical analysis, the principle and theoretical positions of the discharge ports is presented. All these made the design of discharge ports is rationalization.6) After the studying and analysis for scroll compressor, as a project of province class(No:7520), we developed a CAD system for scroll compressor. The scroll compressor calculator assistance design system makes scroll compressor matched from th... |
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