专利名称：一种大型螺杆式压缩机转子的制作方法
技术领域：
本实用新型涉及一种转子，尤其涉及一种大型螺杆式压缩机转子。
背景技术：
螺杆式压缩机有一对相互啮合的按一定传动比反向旋转的螺旋形转子，水平且 平行配置于机体内部，具有凸齿的转子为阳转子，通常为驱动转子，具有凹齿的转子称 为阴转子，通常为从动转子。螺杆式压缩机属于容积式压缩机，它利用一对相互啮合的 阴阳转子在机体内作回转运动，周期性地改变转子每对齿槽间的容积完成吸气、压缩、 排气过程。螺杆式压缩机转子的齿形决定螺杆式压缩机的性能。目前螺杆式压缩机转子的 齿形组成曲线有圆弧、摆线和椭圆及其包络线等，但阴阳转子的齿数比一般为6 5， 阴阳转子的直径差较大，阴转子直径较小，不适合阴转子驱动阳转子，且因转速比为1.2 倍，对螺杆式压缩机排气量的提高有限；由圆弧、摆线及其包络线组成的螺杆式压缩机 转子的齿形存在尖点棱角，不利于加工和检测，噪声较大。
发明内容本实用新型的目的在于克服上述现有技术的不足而提出一种易于加工，啮合面 光滑，密封性好，阴阳转子的直径差小，可互换驱动转子，振动小，噪声低，提高螺杆 式压缩机的排气量和效率的螺杆式压缩机转子。本实用新型的目的可以通过如下措施来达到参见附图，一种大型螺杆式压缩 机转子，它包含阴转子1和阳转子2，其特征在于阴转子1和阳转子2的齿形为双边非对 称，齿形的组成曲线为圆弧和椭圆及其包络线，阴阳转子的齿数比为7 5，阴阳转子的 直径分别为248mm和262mm，阴阳转子的中心距为206mm。本实用新型同现有技术相比可产生如下积极效果1.转子的齿形组成曲线为圆弧和椭圆及其包络线，接触线短，泄漏三角形小， 啮合平稳，密封性好，效率高；2.各组成齿形曲线间光滑连接，型线上无尖点，便于加工和检测，流线性好， 噪声低；3.节圆处成点啮合，使整个啮合线均可形成油膜；4.齿形为双边非对称，阴阳转子直径调整方便，转子间力矩分配合理，振动 小；5.阴阳转子的齿数比为7 5，转速比为1.4倍，阴阳转子直径相差不大，转子 刚度接近，承载能力高，可用于压差和压比较大的工况，可实现阴转子1驱动阳转子2， 减少压缩机的开发系列。我们知道，一种规格转子的螺杆式压缩机当R22制冷剂更换成R134a制冷剂 时，其制冷量和功率降低至0.7左右，也就是说，要制冷量不变，通常的技术是用大一个规格转子的螺杆式压缩机。而采用本实用新型的技术，阴阳转子的齿数比为7 5，转速 比为1.4倍，不用增大一个规格转子，就用原规格转子实现了制冷量不变，且因排气量的 提高，容积效率将提高，压缩机性能也就提高；对该规格转子螺杆式压缩机而言，因转 子规格相同就可压缩机的铸件通用，因转子齿形通用则加工齿形的刀具通用，从而可以 减少机型的开发和刀具的投入，可以大大节省开发成本，加快开发进度，使螺杆式压缩 机有更广的应用领域。
附图是本实用新型一种大型螺杆式压缩机转子的结构示意图。 图中1.阴转子，2.阳转子
具体实施方式
以下结合附图对本实用新型的具体实施方式
作详细说明。实施例一种大型螺杆式压缩机转子，它包含阴转子1和阳转子2，阴转子1 和阳转子2的齿形为双边非对称，其齿形的组成曲线为圆弧和椭圆及其包络线，阴阳转 子的齿数比为7 5，阴阳转子的直径分别为248mm和262mm，阴阳转子的中心距为 206mm,阴转子1和阳转子2以其中心点为坐标原点且有间隙0.05mm的实际型线坐标如 下阳转子阴转子序号XlYlX2Y21 -76.99986805 105.9812263 72.35592897 100.63906822 -76.98607368 105.9911769 72.03611765 100.86499343 -76.97221193 106.0010335 71.71258609 101.08557894 -76.95828344 106.0107956 71.38541404 101.30077015 -76.94428885 106.0204627 71.05468218 101.51051416 -76.93022883 106.0300343 70.72047203 101.7147597 -76.916104 106.0395101 70.38286599 101.91345478 -76.90191503 106.0488895 70.04194728 102.10655199 -76.88766258 106.0581722 69.69779997 102.294003210 -76.87334731 106.0673577 69.35050888 102.475762311 -76.85896987 106.0764456 69.00015964 102.651784412 -76.84453094 106.0854355 68.64683862 102.82202613 -76.83003117 106.0943269 68.29063292 102.986445114 -76.81547125 106.1031195 67.93163035 103.145001215 -76.80085185 106.1118128 67.56991943 103.297655216 -76.78617364 106.1204065 67.20558933 103.444369417 -76.7714373 106.1289 66.83872986 103.585107518 -76.75664352 106.1372932 66.46943148 103.719834919 -76.74179298 106.1455855 66.09778523 103.8485183[0038]20-76.72688636106.153776565.72388274103.971125921-76.71192436106.16186665.34781619104.087627422-76.69690767106.169853564.96967832104.197994223-76.68183699106.177738664.58956235104.302198824-76.66671301106.18552164.20756201104.400215625-76.65153643106.193200363.82377149104.492020426-76.63630796106.200776263.43828542104.577590527-76.62102829106.208248363.05119886104.656904728-76.60569814106.215616362.66260725104.729943429-76.59031822106.222879862.27260643104.796688530-76.57488924106.230038561.88129258104.857123531-76.55941191106.237092161.48876218104.911233532-76.54388695106.244040261.09511206104.959005133-76.52831508106.250882660.70043928105.000426434-76.51269702106.257618860.3048412105.035487135-76.49703349106.264248659.90841539105.064178636 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90.09531699113-29.4871536688.1202729333.48132501 89.77673709114-28.3376781186.802184133.19189551 89.46088518115-27.4624039685.6891194532.89948648 89.14778962116-26.816052184.7843675632.60412419 88.83747851117-26.3527965684.0772276132.30583513 88.52997972118-26.0288369483.5441727132.0046461 88.22532085119-25.8052499983.1529607731.70058411 87.92352924120-25.6502457582.8688078131.39367648 87.62463198121-25.5399998782.6601850931.08395074 87.32865591122-25.4579610282.5021173630.77143471 87.03562759123-25.3932674982.3767007730.45615643 86.74557333124-25.3390391982.2719475330.13814421 86.45851917125-25.2909875882.1801641329.81742659 86.17449086126-25.2464435382.0965279229.49403237 85.89351392127-25.2037324682.0180501929.16799057 85.61561356128-25.1617896681.9428880228.83933046 85.34081473129-25.1199275881.8699084228.50808154 85.06914209130-25.0776952881.798418428.17427355 84.80062004131-25.0347928981.727998827.83793646 84.53527267132-24.9910187981.6584019927.49910045 84.27312381133-24.9462365381.5894883727.15779594 84.01419699134-24.9003537281.5211867826.81405358 83.75851545135-24.8533082981.4534694326.4679042 83.50610214136-24.8050594981.3863359926.1193789 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权利要求1.一种大型螺杆式压缩机转子，它包含阴转子(1)和阳转子(2)，其特征在于阴转子 (1)和阳转子(2)的齿形为双边非对称，其齿形的组成曲线为圆弧和椭圆及其包络线，阴 阳转子的齿数比为7 5，阴阳转子的直径分别为248mm和262mm，阴阳转子的中心距 为 206mm。
2.根据权利要求1所述的一种大型螺杆式压缩机转子，其特征在于所述的阴转子(1) 和阳转子(2)以其中心点为坐标原点且有间隙0.05mm的实际型线坐标如下阳转子阴转子序号 XlYlX2 Y21-76.99986805105.9812263 72.35592897 100.63906822-76.98607368105.9911769 72.03611765 100.86499343-76.97221193106.0010335 71.71258609 101.08557894-76.95828344106.0107956 71.38541404 101.30077015-76.94428885106.0204627 71.05468218 101.51051416-76.93022883106.0300343 70.72047203 101.7147597-76.916104106.0395101 70.38286599 101.91345478-76.90191503106.0488895 70.04194728 102.10655199-76.88766258106.0581722 69.69779997 102.294003210-76.87334731106.0673577 69.35050888 102.475762311-76.85896987106.0764456 69.00015964 102.651784412-76.84453094 106.0854355 68.64683862 102.82202613-76.83003117106.0943269 68.29063292 102.986445114-76.81547125106.1031195 67.93163035 103.145001215-76.80085185106.1118128 67.56991943 103.297655216-76.78617364 106.1204065 67.20558933 103.444369417-76.7714373106.1289 66.83872986 103.585107518-76.75664352106.1372932 66.46943148 103.719834919-76.74179298106.1455855 66.09778523 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专利摘要本实用新型公开了一种大型螺杆式压缩机转子，它包含阴转子(1)和阳转子(2)，其特征在于阴转子(1)和阳转子(2)的齿形为双边非对称，齿形的组成曲线为圆弧和椭圆及其包络线，阴阳转子的齿数比为7∶5，阴阳转子的直径分别为248mm和262mm，阴阳转子的中心距为206mm，本实用新型易于加工，啮合面光滑，密封性好，阴阳转子的直径差小，可互换驱动转子，振动小，噪声低，提高了螺杆式压缩机的排气量和效率。
文档编号F04C18/16GK201794788SQ201020537780
公开日2011年4月13日 申请日期2010年9月16日 优先权日2010年9月16日
发明者余金龙, 孙洪亮, 陈昌满 申请人:大连冷冻设备制造有限责任公司, 武汉凯龙技术开发有限责任公司