本文選題：對稱圓弧加直線 + 修正型線　； 參考：《合肥工業(yè)大學(xué)》2015年博士論文

【摘要】：近十年來,隨著汽車工業(yè)的迅速發(fā)展,汽車空調(diào)市場需求日趨增長。壓縮機(jī)作為汽車空調(diào)的核心裝置,尤其代表壓縮機(jī)技術(shù)最高水平的第四代渦旋壓縮機(jī)以其機(jī)構(gòu)緊湊、高效節(jié)能、微振低噪以及工作可靠等特點(diǎn),應(yīng)用在汽車空調(diào)上有其它壓縮機(jī)不可替代的優(yōu)勢。相較于商用空調(diào)渦旋壓縮機(jī),汽車空調(diào)渦旋壓縮機(jī)要求有高壓比、大內(nèi)容積比、高容積效率和運(yùn)行可靠。這些技術(shù)要求必須設(shè)計(jì)新型渦旋型線或?qū)υ行途�進(jìn)行改進(jìn)設(shè)計(jì)。采用修正型線(對稱圓弧加直線)渦旋壓縮機(jī),其較高的內(nèi)容積比特別適合應(yīng)用于汽車空調(diào)領(lǐng)域。目前,國內(nèi)外對基于漸開線修正型線的研究絕大部分集中于雙圓弧修正,對對稱圓弧加直線修正型線研究還很少,究其原因,在于對稱圓弧加直線修正型線的理論還不完善,不能建立基于各種目標(biāo)的數(shù)學(xué)模型,不能從理論上對產(chǎn)品性能作出精確定性分析和預(yù)測產(chǎn)品的性能。同時(shí),國內(nèi)企業(yè)相關(guān)產(chǎn)品涉及壓縮腔容積計(jì)算是建立在圖解法基礎(chǔ)上的。渦旋齒嚙合時(shí)形成的壓縮腔容積是型線修正幾何學(xué)的重要內(nèi)容,直接影響到動渦盤的靜平衡、軸系的動平衡設(shè)計(jì)和分析。因此研究和完善對稱圓弧加直線修正型線理論,建立精確的壓縮腔容積和動力特性數(shù)學(xué)模型,對提升汽車空調(diào)渦旋壓縮機(jī)設(shè)計(jì)、分析和計(jì)算機(jī)仿真水平至關(guān)重要。本文在國內(nèi)外學(xué)者對漸開線型線圓弧類修正理論的基礎(chǔ)上,采用理論分析、數(shù)值仿真和實(shí)驗(yàn)驗(yàn)證方法,深入研究了對稱圓弧加直線修正型線的幾何特征和壓縮腔容積構(gòu)成,詳細(xì)分析了型線嚙合產(chǎn)生的氣體力特性和排氣特性,建立和完善了對稱圓弧加直線修正型線理論,通過仿真和實(shí)驗(yàn)驗(yàn)證了所建立型線理論的正確性,并研究了適用于汽車空調(diào)渦旋壓縮機(jī)修正型線修正角的取值范圍。完成的主要研究工作和成果總結(jié)如下：回顧和總結(jié)了汽車空調(diào)壓縮機(jī)的發(fā)展歷程、發(fā)展現(xiàn)狀和發(fā)展趨勢。從汽車空調(diào)和商用空調(diào)使用環(huán)境和條件不同入手,歸納了汽車空調(diào)壓縮機(jī)獨(dú)特的使用要求和技術(shù)特點(diǎn),指出渦旋壓縮機(jī)在汽車空調(diào)領(lǐng)域內(nèi)使用優(yōu)勢,明確了進(jìn)行新型型線設(shè)計(jì)或?qū)υ行途�進(jìn)行改進(jìn)是提升渦旋壓縮機(jī)性能的主要方向之一。對稱圓弧加直線修正型線幾何理論研究。在圓弧類修正型線理論的基礎(chǔ)上,深入研究對稱圓弧加直線修正型線的幾何特征,得出了該型線齒形生成方法,指出該型線區(qū)別于其他型線的特征參數(shù)并討論了這些參數(shù)的取值。研究了任意渦旋圈數(shù)與壓縮腔對數(shù)之間的關(guān)系�，F(xiàn)有的有關(guān)渦旋壓縮機(jī)的數(shù)學(xué)模型基本上都是針對整數(shù)圈渦旋線,或者有關(guān)于非整數(shù)渦旋圈數(shù)與壓縮腔對數(shù)之間關(guān)系研究,但結(jié)論明顯與實(shí)際不符。這些不足都限制了任意圈數(shù)渦旋壓縮機(jī)數(shù)學(xué)模型的建立。建立了任意渦旋圈數(shù)與壓縮腔之間的關(guān)系,指出對非整數(shù)圈渦旋壓縮機(jī),只要適當(dāng)?shù)匦拚ぷ髑粚?shù),就可以準(zhǔn)確地計(jì)算各工作腔容積。建立了對稱圓弧加直線修正型線渦旋壓縮機(jī)壓縮腔容積數(shù)學(xué)模型。根據(jù)修正后中心壓縮腔容積減少實(shí)際上是由于渦盤始端壁厚增加造成的本質(zhì)特點(diǎn),提出了修正后渦盤始端壁厚增加容積和實(shí)際排氣角的計(jì)算方法。建立了對稱圓弧加直線修正型線渦旋壓縮機(jī)氣體力數(shù)學(xué)模型。渦旋圈數(shù)不同,吸氣角也不同,造成吸氣角可能大于、等于或小于嚙合侵入角,這使得壓縮腔對數(shù)變化多種多樣。詳細(xì)剖析了任意渦旋圈數(shù)渦旋壓縮機(jī)的各個不同階段工作特性及氣體力計(jì)算方法。對稱圓弧加直線修正型線渦旋壓縮機(jī)建模與仿真。利用VB進(jìn)行了數(shù)值仿真,得到了修正型線各參數(shù)在不同修正角下變化情況,提出了適用于汽車空調(diào)技術(shù)要求的修正角的取值范圍。利用UG軟件生成動靜渦盤和壓縮機(jī)其他構(gòu)件,為研制壓縮機(jī)樣機(jī)奠定了基礎(chǔ)。對稱圓弧加直線修正型線渦旋壓縮機(jī)樣機(jī)研制和實(shí)驗(yàn)研究。研制了修正角為119°的對稱圓弧加直線修正型線渦旋壓縮機(jī)樣機(jī)。通過樣機(jī)的實(shí)驗(yàn)研究證實(shí)了對稱圓弧加直線修正型線設(shè)計(jì)理論與方法研究的正確性,同時(shí)實(shí)驗(yàn)表明,修正角β在[95°-135°]之間取值滿足汽車空調(diào)壓縮機(jī)的性能要求。
[Abstract]:In the last ten years, with the rapid development of automobile industry, the demand of automobile air conditioning market is increasing. As the core device of automobile air conditioning, the fourth generation scroll compressor, which represents the highest level of compressor technology, has the characteristics of compact structure, high efficiency, energy saving, low vibration and low noise, and reliable work. Compressor is an irreplaceable advantage. Compared to the commercial air-conditioned scroll compressor, the automotive air conditioning scroll compressor requires high pressure ratio, large content product ratio, high volume efficiency and reliable operation. These technologies require the design of a new type of scroll line or the improved design of the original type line. The revised type line (symmetrical arc plus straight line) scroll compression is used. The high content product ratio is especially suitable for the automotive air conditioning field. At present, most of the researches on the involute modified lines at home and abroad are concentrated on the double arc correction, and there are few studies on the symmetrical arc plus straight line correction lines. The reason is that the theory of symmetrical arc plus straight line correction is not perfect and can not be established. The mathematical model based on various targets can not make a precise qualitative analysis of the product performance and predict the performance of the product in theory. At the same time, the calculation of the volume of the compressed cavity is based on the graphical method. The volume of the compressed cavity formed by the meshing of the scroll teeth is an important content of the geometric correction of the shape line. The static balance of the moving vortex disk and the dynamic balance of the shaft system are designed and analyzed. Therefore, it is very important to study and improve the theory of symmetrical circular arc plus line correction line, to establish a precise mathematical model of the volume and dynamic characteristics of the compression chamber, and to improve the design and analysis of the scroll compressor of the automobile air conditioning and the simulation of the computer. On the basis of the theory of circular arc correction, the geometric characteristics and the volume composition of the compressed cavity are deeply studied by means of theoretical analysis, numerical simulation and experimental verification. The gas force characteristics and the exhaust characteristics of the type line meshing are analyzed in detail, and the correction of the symmetrical circular arc plus line correction is established and perfected. The model line theory is used to verify the correctness of the established line theory by simulation and experiment. The range of correction angle suitable for the scroll compressor of automotive air conditioning is studied. The main research work and results are summarized as follows: the development history, development status and development trend of the automotive air conditioning compressor are reviewed and summarized. Starting with the different conditions and conditions of automobile air conditioning and commercial air conditioning, the unique use requirements and technical characteristics of the automotive air conditioning compressor are summarized. The advantages of the scroll compressor in the automotive air conditioning field are pointed out. It is clear that the design of the new type line or the improvement of the original type line is the main direction to improve the performance of the scroll compressor. A study of geometric theory of symmetrical circular arc plus linear correction line. On the basis of circular arc modified line theory, the geometric characteristics of symmetrical circular arc plus line modified line are deeply studied, and the formation method of this type of line tooth shape is obtained. It is pointed out that the line is different from the characteristic parameters of other lines and discusses the value of these parameters. The relationship between the number of vortex rings and the logarithm of the compression cavity. The existing mathematical models for the scroll compressor are basically directed against the integer circle vortex line, or the relation between the number of non integer vortices and the logarithm of the compression cavity, but the conclusion is obviously inconsistent with the reality. These limitations restrict the mathematical model of a scroll compressor with arbitrary cycles. The relationship between the number of arbitrary vortex rings and the compression chamber is established. It is pointed out that the volume of each working cavity can be accurately calculated as long as the logarithm of the working cavity is properly corrected for a non integer circle scroll compressor. A mathematical model of the volume of the compression cavity of a symmetrical circular arc and straight line modified linear scroll compressor is established. In fact, the volume reduction is due to the essential characteristic of the increase of the wall thickness at the beginning of the vortex disc. The calculation method of the wall thickness increasing volume and the actual exhaust angle after the correction is proposed. The mathematical model of the gas force of the scroll compressor with a symmetrical circular arc and a straight line correction type line is established. It is equal to or less than the engagement angle, which makes the logarithmic changes of the compression cavity varied. The work characteristics and the calculation method of the gas force at various stages of the scroll compressor with arbitrary scroll number are detailedly analyzed. The modeling and Simulation of the symmetrical circular arc plus straight line scroll compressor is made. The numerical simulation is carried out with the VB and the modified line is obtained. The variation of the parameters at different correction angles is made and the range of the correction angle suitable for the technical requirements of the automobile air conditioning is put forward. Using the UG software to generate the static vortex disk and other compressor components, it lays the foundation for the development of the compressor prototype. The prototype of a symmetrical arc plus linear correction type scroll compressor with a positive angle of 119 degrees. The correctness of the research on the theory and method of the symmetrical circular arc plus linear modified line design is confirmed through the experimental study of the prototype. At the same time, the experimental results show that the value of the corrected angle beta between [95 [-135]] meets the performance requirements of the automotive air conditioning compressor.

【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TH45

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