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公开(公告)号：US4389168A
公开(公告)日：1983-06-21
申请号：US248388
申请日：1981-03-27
申请人： Donald Yannascoli , Bruce A. Fraser
发明人： Donald Yannascoli , Bruce A. Fraser
CPC分类号： F04B49/243
摘要： Apparatus for modulating the capacity of a reciprocating compressor having a cylinder chamber and a valve assembly extending over the cylinder chamber, defining fluid inlet and outlet paths, and including a suction valve for regulating vapor flow through the inlet path. The capacity modulating apparatus comprises a lever, a fulcrum, and control means. The lever extends through the fluid inlet path and above the suction valve, and has a first end located outside the valve assembly and a second end engaging the suction valve. Both the fulcrum and the control means engage the lever, and the control means is provided for applying a variable force to the lever wherein the lever transmits the force to the suction valve to urge the suction valve to an open position.
摘要翻译： 用于调节具有气缸室和在气缸室上延伸的阀组件的往复式压缩机的容量的装置，限定流体入口和出口路径，并且包括用于调节通过入口路径的蒸气流的吸入阀。 容量调节装置包括杠杆，支点和控制装置。 杠杆延伸穿过流体入口路径并且在吸入阀上方，并且具有位于阀组件外部的第一端和与吸入阀接合的第二端。 支点和控制装置都与杆接合，并且控制装置用于向杠杆施加可变的力，其中杠杆将力传递到吸入阀以将吸入阀推动到打开位置。
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公开(公告)号：US09939179B2
公开(公告)日：2018-04-10
申请号：US14962600
申请日：2015-12-08
申请人： Bruce A. Fraser
发明人： Bruce A. Fraser
CPC分类号： F25B1/04 , F25B31/004 , F25B31/026 , F25B2400/075 , F25B2500/01
摘要： A refrigeration system includes a plurality of compressors connected in series with each other. Each compressor has an oil sump located in a gravitational bottom of the compressor. A common supply line supplies refrigerant and oil to each of the plurality of compressors. The plurality of compressors includes a lead compressor and one or more non-lead compressors. The common supply line is configured to return more oil to the lead compressor than to the one or more non-lead compressors. Oil sump pressures for the plurality of compressors are maintained such that the lead compressor has the highest oil sump pressure, and the oil sump pressures of the non-lead compressors are successively lower with respect to its position downstream of the lead compressor. As a result, oil is distributed between adjacent compressors from the lead compressor, which is a most upstream compressor, sequentially downstream to the one or more non-lead compressors.
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公开(公告)号：US20140241926A1
公开(公告)日：2014-08-28
申请号：US14190268
申请日：2014-02-26
申请人： Bruce A. Fraser
发明人： Bruce A. Fraser
CPC分类号： F04C29/021 , F04C23/001 , F04C23/008 , F04C2240/806 , F04C2240/809
摘要： A method of operating a refrigeration system, that includes providing a plurality of compressors connected in parallel. The plurality of compressors includes a plurality of scroll compressors. The method further includes returning circulated refrigerant to the plurality of compressors, the circulated refrigerant having oil entrained therein. Returning circulated refrigerant to the plurality of compressors includes returning more oil to one of the plurality of compressors than to another of the plurality of compressors. The method also includes supplying oil from one of the plurality of compressors to at least one other of the plurality of compressors. Supplying oil from one of the plurality of compressors includes supplying oil from the one of the plurality of compressors having an opening in its housing. A fitting is assembled into the opening. The fitting protrudes through the housing into an interior portion of the housing.
摘要翻译： 一种操作制冷系统的方法，包括提供并联连接的多个压缩机。 多个压缩机包括多个涡旋压缩机。 该方法还包括将循环的制冷剂返回到多个压缩机，循环的制冷剂具有夹带在其中的油。 将循环的制冷剂返回到多个压缩机包括将多个压缩机中的一个压缩机返回到多个压缩机中的另一个。 该方法还包括将油从多个压缩机中的一个压缩机供应到多个压缩机中的至少另一个。 从多个压缩机中的一个提供油包括从多个压缩机中的一个在其壳体中具有开口的油供给油。 配件组装到开口中。 配件通过壳体突出到壳体的内部。
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24.发明授权Scroll wrap tip with abradable selectively applied coating and load-bearing surface 失效滚动包装尖端与可磨损的选择性涂层和承重表面公开(公告)号：US06887052B1
公开(公告)日：2005-05-03
申请号：US10756016
申请日：2004-01-13
CPC分类号： F04C18/0284 , F04C27/005 , F04C2230/91 , F05C2253/04 , Y10T29/4924
摘要： A scroll compressor is provided with a generally spiral wrap having an abradable or conformable coating on radially inner portions of its tip. The coating is not applied to radially outer portions. During operation of the scroll compressor, the coating will eliminate tip gap leakage adjacent radially inner, higher discharge pressure portions of the compression process. The outer, non-coated portions will bear the axial load, and ensure the coating will not wear away to an undue amount.
摘要翻译： 螺旋压缩机设置有在其尖端的径向内部上具有可磨损或适形涂层的大体上螺旋形的卷边。 涂层不施加到径向外部。 在涡旋压缩机的操作期间，涂层将消除邻近压缩过程的径向内部，较高排出压力部分的尖端间隙泄漏。 外部未涂覆的部分将承受轴向载荷，并确保涂层不会磨损到不适当的量。
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25.发明授权Compact control mechanism for axial motion control valves in helical screw compressors 有权螺旋式压缩机中轴向运动控制阀的紧凑型控制机构公开(公告)号：US06739853B1
公开(公告)日：2004-05-25
申请号：US10313722
申请日：2002-12-05
申请人： Yan Tang , Bruce A. Fraser
发明人： Yan Tang , Bruce A. Fraser
IPC分类号： F04C1800
CPC分类号： F04C28/12 , F04C18/16 , F04C28/125 , F25B2600/026 , Y10T137/2587
摘要： An axial slide valve is provided with an axially extending fluid chamber at each end with one chamber receiving a spring and being acted on by suction pressure and the other chamber coacting with a fixed piston and being acted upon by discharge pressure or the like whereby the slide valve is positioned so as to balance the spring and fluid pressures and thereby the compressor capacity.
摘要翻译： 轴向滑阀在每个端部设置有轴向延伸的流体室，一个室容纳弹簧并被吸入压力作用，另一个室与固定的活塞共同作用，并通过排出压力等作用，由此滑块 阀被定位以平衡弹簧和流体压力，从而平衡压缩机容量。
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公开(公告)号：US06468060B1
公开(公告)日：2002-10-22
申请号：US09032971
申请日：1998-03-02
IPC分类号： F04B3910
CPC分类号： F04B39/1073 , Y10T137/4358 , Y10T137/7892
摘要： The seat of a suction valve of a reciprocating compressor is modified to limit the radial extent and thereby the area in which an annular oil film can be established between the valve and the valve seat. The preferred radial extent of the seating surface is 0.014 to 0.018 inches and the preferred ratio of the area of the suction valve seat to the passage therethrough is in the range of 13% to 25%.
摘要翻译： 改变往复式压缩机的吸入阀的座位以限制径向范围，从而限制在阀和阀座之间建立环形油膜的区域。 座表面的优选径向范围为0.014至0.018英寸，并且吸入阀座的面积与通过其的通道的优选比率在13％至25％的范围内。
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27.发明授权Refrigerating system employing a compressor for single or multi-stage operation with capacity control 失效制冷系统采用压缩机进行单级或多级运行，具有容量控制
公开(公告)号：US5768901A
公开(公告)日：1998-06-23
申请号：US758837
申请日：1996-12-02
申请人： Michael J. Dormer , Bruce A. Fraser
发明人： Michael J. Dormer , Bruce A. Fraser
CPC分类号： F25B1/10 , F04B49/065 , F25B49/022 , F04B2201/0807 , F25B2400/075 , F25B2400/13
摘要： A compressor having plural banks of cylinders can be operated multi-stage, single stage, plural parallel single stages and, when multi-stage, with or without an economizer. One of the low stage banks of cylinders can be unloaded to reduce the first stage output during multi-stage operation or to permit operation of a single stage when the second stage is bypassed.
摘要翻译： 具有多个气缸组的压缩机可以操作多级，单级，多个并联单级，并且当多级时，具有或不具有节能器。 可以卸载一个低级气缸组，以减少多级操作期间的第一级输出，或者在第二级旁路时允许单级运行。
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公开(公告)号：US5591011A
公开(公告)日：1997-01-07
申请号：US529794
申请日：1995-09-18
CPC分类号： F04B39/128 , F04B39/0246
摘要： The oil sump and suction plenum of a hermetic compressor are in continuous fluid communication through an oil equalization port assembly. Additionally, communication is established between the oil sump and the suction plenum if pressure in the oil sump is greater than that in the suction plenum by more than a few pounds. Multiplexing is established through a port in the suction plenum.
摘要翻译： 封闭式压缩机的油底壳和吸气室通过均油口组件连续流体连通。 此外，如果油底壳中的压力大于吸入气室中的压力超过几磅，则在油底壳和吸入气室之间建立通信。 通过吸气室中的一个端口建立多路复用。
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公开(公告)号：US5111737A
公开(公告)日：1992-05-12
申请号：US681594
申请日：1991-04-08
CPC分类号： F16B2/248 , F16J1/18 , Y10T403/32901
摘要： A wrist pin and wrist pin retainer are combined in a subassembly which prevents inadvertent removal of the retainer from the assembly. The subassembly is placed in a bore defined by a piston and a connecting rod with at least one annular groove formed in the bore. When the subassembly is located in the bore, the retainer coacts with the annular groove to secure the wrist pin in the bore.
摘要翻译： 手腕销和腕针保持器组合在一个子组件中，可防止保持件从组件中无意中移除。 子组件放置在由活塞和连接杆限定的孔中，孔中形成有至少一个环形槽。 当子组件位于孔中时，保持器与环形槽共同作用以将腕销固定在孔中。
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30.发明申请公开(公告)号：US20190285070A1
公开(公告)日：2019-09-19
申请号：US16428270
申请日：2019-05-31
摘要： A refrigeration system with at least three compressors connected in a circuit. Each compressor has a housing with an oil sump. The oil sump is adapted to contain oil that defines an oil level. A supply line supplies refrigerant and entrained oil to each of the at least three compressors. The oil sump of each compressor has at least one oil port. Each oil port is disposed at an elevation that is equal to or minimally higher than the level of oil to promote equalization of oil levels in each compressor. There are a plurality of separate conduits which are not directly connected, but connected through the oil sumps of separate compressors. At least one compressor includes an oil sump extension having connections for the separate conduits. Each oil port is connected to the separate conduits or an oil sump extension. Each separate conduit connects a pair of compressors.
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