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The research on scroll profiles theory at present mainly is aiming at the single profile and its amelioration or parameter optimization, not aiming at the natural characteristic of the profiles equation of scroll profiles itself. Thus, the intrinsic differential equation bearing on arc-length and tangent direction angle was studied. Using the inherent differential equation and general functional theory, the conversion ideas between the expression of intrinsic differential equation and the expression in Cartesian coordinate was studied, and the condition of involutes characteristic was presented. The detailed analysis of four typical scroll profiles was given. According to the four typical scroll profiles and based on the method of Taylor series, the unified formation of general functional integration scroll profiles was established, which perfected general theory of scroll profiles increasingly. The envelope method to seek conjugation engagement profiles was studied. The unified general functional equation of scroll profiles represented the admissible function scrolls and the conjugation engagement characteristic of which was studied. The engagement condition of conjugation scroll profiles and the expression in Cartesian coordinate of conjugation scroll profiles of general functional integration scroll profiles were educed. Therefore, the restriction of inherent characteristics of single scroll profiles model is broken through. Solid modeling and machine tool path simulation can bridge the gap between design and manufacture which is essential for the design and manufacture of scroll compressors. With this method a perfect solid model can be achieved, which leads to an optimal design in terms of quality, delivery time and cost. The presentation of unified formation of general functional integration scroll profiles represents foundation factor of instinct characteristics of scroll profiles, which widens the design method of scroll compressor for automobile air conditioning. automobile air conditioning, scroll compressor profiles, integrated design, expression transform, application analysis Citation:Wang L C, Du L, Zhang X M, et al. A study on integrated design conjugation profiles application analysis of scroll profiles for automobile air conditioning.

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Many factors affect the determination of moisture content in oil by Karl Fischer Method; there are objective factors such as water, samples and temperature environment, respectively 46# turbine oil and 25# transformer oil for example, from a gross error, correlation coefficient, and other subjective perspective, the causes of error are analyzed; correlation coefficient very close to 1 and most of the relative error in ( -0.15,0.00) are discussed, which shows that high measuring accuracy and precision of this method.

The anti-settlement dehydration process of the phosphate ester fire-resistant oil is analyzed with Lab VIEW which is a kind of graphical programming language. It describes the process of the anti-settlement dehydration of the fire-resistant oil and compiles the simulation program, find the movement feature of the droplet and the operation mechanism of the system in the process of the anti-settlement. It is a foundation for further enhancing the dehydration of the anti-settlement method to fire-resistant oil.