公开(公告)号：US5016447A

公开(公告)日：1991-05-21

申请号：US517777

申请日：1990-05-02

申请人： L. Thomas Lane ,  Bruce A. Fraser ,  Thomas E. Brendel

发明人： L. Thomas Lane ,  Bruce A. Fraser ,  Thomas E. Brendel

IPC分类号： F25B1/10 ,  F25B31/00 ,  F25B43/02 ,  F25B47/02

CPC分类号： F25B1/10 ,  F25B31/004 ,  F25B43/02 ,  F25B47/022 ,  F02B2275/14 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2600/2509 ,  F25B2700/2105 ,  F25B2700/21151 ,  Y02T10/123

摘要： An internally compounded two-stage compressor has an interstage cooler and an oil separator associated therewith. The oil, and any hot gas mixed with it, discharged from the oil separator is passed in heat exchanger relationship with the cooling refrigerant flowing into the interstage cooler.

摘要翻译： 内部复合的两级压缩机具有级间冷却器和与其相关联的油分离器。 从油分离器排出的油和与其混合的任何热气体与流入级间冷却器的冷却制冷剂的热交换器关系通过。

公开(公告)号：US20140037484A1

公开(公告)日：2014-02-06

申请号：US13950488

申请日：2013-07-25

申请人： Bruce A. Fraser ,  James William Bush

发明人： Bruce A. Fraser ,  James William Bush

IPC分类号： F04C29/02

CPC分类号： F04C29/028 ,  F04C18/0215 ,  F04C23/001 ,  F04C23/008 ,  F04C28/02 ,  F04C29/021 ,  F04C2270/24

摘要： A method of operating a refrigeration system having at least three compressors, in which each compressor has an oil sump with oil at an oil level. The method includes separately connecting the oil sumps of the at least three compressors. Each separate connection allows oil flow only between the oil sumps of two of said compressors thereby preventing bypass flow. The method further includes flowing oil between oil sumps of the at least three compressors and along the separate connections to tend to equalize the oil levels among the oil sumps of the at least three compressors.

摘要翻译： 一种操作具有至少三个压缩机的制冷系统的方法，其中每个压缩机具有油位在油位上的油底壳。 该方法包括分开连接至少三个压缩机的油底壳。 每个单独的连接允许仅在两个所述压缩机的油池之间进行油流，从而防止旁路流动。 该方法还包括在至少三个压缩机的油池之间并沿着单独的连接件流动油以倾向于使至少三个压缩机的油池中的油位相等。

公开(公告)号：US08317494B2

公开(公告)日：2012-11-27

申请号：US11814994

申请日：2005-02-07

申请人： Peter J. Pileski ,  Bruce A. Fraser

发明人： Peter J. Pileski ,  Bruce A. Fraser

IPC分类号： F04B17/03 ,  H02K11/00

CPC分类号： F01C21/10 ,  F04C18/086 ,  F04C18/16 ,  F04C23/008 ,  F04C29/0085 ,  F04C29/045 ,  F04C2240/803 ,  Y10T29/49242

摘要： A compressor (20) has a housing (22) having first (52) and second (48) members. A motor (24) within the housing (22) is coupled to one or more working elements (26, 28) to drive the one or more working elements (26, 28) to compress a fluid. A number of electrical terminals (104) are each mounted in an associated aperture (132) in the second housing member (48) and electrically connected to the motor (24).

摘要翻译： 压缩机（20）具有具有第一（52）和第二（48）构件的壳体（22）。 壳体（22）内的马达（24）联接到一个或多个工作元件（26,28）以驱动一个或多个工作元件（26,28）以压缩流体。 多个电端子（104）分别安装在第二壳体构件（48）中的关联的孔（132）中并电连接到电动机（24）。

公开(公告)号：US20100209280A1

公开(公告)日：2010-08-19

申请号：US12678401

申请日：2007-10-01

申请人： Paul J. Flannigan ,  Bruce A. Fraser

发明人： Paul J. Flannigan ,  Bruce A. Fraser

IPC分类号： F04C18/16

CPC分类号： F04C18/16 ,  F04C28/12 ,  F04C29/0035 ,  F04C29/06 ,  F04C2270/12 ,  F04C2270/13 ,  F04C2270/14

摘要： A screw compressor (10) comprises a housing (12, 14, 16), a slide valve assembly (23) and a pulsation damper. The housing (12, 14, 16) receives a supply of working matter from a pair of intermeshing screw rotors (18, 20), and comprises a slide recess (51), a pressure pocket (32), and a piston cylinder (54). The slide valve assembly (23) regulates the capacity of the screw compressor (10), and comprises a slide valve (36) axially movable within the slide recess (51) and the pressure pocket (32), a piston head (40) axially movable within the piston cylinder (54), and a piston shaft (38) connecting the slide valve (36) with the piston head (40). The pulsation damper comprises a flange (58) for separating the pressure pocket (32) from the piston cylinder (54), a bore (60) for receiving the piston rod (38), and a damping channel (46A) extending through the flange (58).

摘要翻译： 螺杆式压缩机（10）包括壳体（12,14,16），滑阀组件（23）和脉动阻尼器。 壳体（12,14,16）从一对相互啮合的螺旋转子（18,20）接收工作物质的供应，并包括滑动凹槽（51），压力腔（32）和活塞缸（54） ）。 滑阀组件（23）调节螺杆式压缩机（10）的容量，并且包括在滑动凹部（51）和压力槽（32）内可轴向移动的滑阀（36），轴向 在所述活塞缸（54）内可移动的活塞轴（38）和将所述滑阀（36）与所述活塞头（40）连接的活塞轴（38）。 脉动阻尼器包括用于将压力袋（32）与活塞缸（54）分离的凸缘（58），用于容纳活塞杆（38）的孔（60）和延伸穿过凸缘的阻尼通道（46A） （58）。

公开(公告)号：US20100135839A1

公开(公告)日：2010-06-03

申请号：US12444614

申请日：2006-12-26

申请人： Bruce A. Fraser

发明人： Bruce A. Fraser

IPC分类号： F04C18/16

CPC分类号： F04C18/165 ,  F04C18/086 ,  F04C29/0035 ,  F04C29/065 ,  F04C29/068 ,  F04C2240/30 ,  F04C2240/50

摘要： A three rotor screw compressor is provided with a bearing cover, and an integral discharge case having a divider wall formed integrally with the bearing cover. The bearing cover closes bearing chambers for each of three rotor shafts, and the divider wall divides a plenum into two distinct chambers. By providing the divider wall, noise and efficiency losses from intermixing of two discharge flows from two separate compression chambers is eliminated. By forming a divider wall integrally with the bearing cover, leakage which has existed in the prior art is eliminated.

摘要翻译： 三转子螺杆式压缩机设置有轴承盖，整体排出壳体具有与轴承盖一体形成的分隔壁。 轴承盖关闭三个转子轴中的每一个的轴承室，分隔壁将集气室分成两个不同的腔室。 通过提供分隔壁，消除了来自两个分离的压缩室的两个排放流的混合的噪声和效率损失。 通过与轴承盖一体形成分隔壁，消除了现有技术中存在的泄漏。

公开(公告)号：US06309194B1

公开(公告)日：2001-10-30

申请号：US08868790

申请日：1997-06-04

申请人： Bruce A. Fraser ,  Peter F. Kaido ,  Michael J. Dormer ,  Wayne P. Beagle ,  Kyle D. Wessells ,  Foster P. Lamm

发明人： Bruce A. Fraser ,  Peter F. Kaido ,  Michael J. Dormer ,  Wayne P. Beagle ,  Kyle D. Wessells ,  Foster P. Lamm

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 area in which an annular oil film can be established between the valve and the valve seat. The seat is configured to limit the oil film from 3% to 33% of the total inlet port opening. In a modified embodiment gas at discharge pressure exerts an opening bias to the suction valve at the end of the discharge stroke.

摘要翻译： 改变往复式压缩机的吸入阀的座位，以限制在阀和阀座之间建立环形油膜的区域。 阀座被配置为将油膜限制在总入口开口的3％至33％。 在改进的实施例中，排出压力下的气体在排放冲程结束时向吸入阀施加打开偏压。

公开(公告)号：US10760831B2

公开(公告)日：2020-09-01

申请号：US15004276

申请日：2016-01-22

申请人： Bruce A. Fraser ,  Terry Nares

发明人： Bruce A. Fraser ,  Terry Nares

IPC分类号： F25B31/00 ,  F25B49/02 ,  F25B1/10 ,  F04B41/06 ,  F04B39/02 ,  F04B49/08 ,  F04B49/20 ,  F04C23/00

摘要： A method of operating a multiple-compressor refrigeration system is provided. This method includes the steps of supplying, via a common supply line, refrigerant gas and oil to a plurality of compressors coupled in series, and attaching an oil flow conduit between adjacent compressors of the plurality of compressors. The oil flow conduit is configured to move oil from a compressor with a relatively higher pressure to a compressor with a relatively lower pressure. The method further includes controlling the pressure for each of the plurality of compressors by regulating a speed at which each of the plurality of compressors operates in order to maintain a pressure differential between the adjacent compressors to facilitate the flow of oil from the compressor with the relatively higher pressure to the compressor with the relatively lower pressure.

公开(公告)号：US09777731B2

公开(公告)日：2017-10-03

申请号：US14741137

申请日：2015-06-16

申请人： Kurt W. R. Bessel ,  Ronald J. Duppert ,  Bruce A. Fraser

发明人： Kurt W. R. Bessel ,  Ronald J. Duppert ,  Bruce A. Fraser

IPC分类号： F01C1/02 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C29/00 ,  F04C18/02 ,  F04C29/12 ,  F04C29/02 ,  F04C23/00

CPC分类号： F04C29/0092 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/02 ,  F04C29/026 ,  F04C29/12 ,  F04C2240/30 ,  F04C2240/809

摘要： A compressor for compressing fluid is provided. The compressor includes a housing having a housing inlet for receiving fluid and a housing outlet for discharging the fluid. A compressing mechanism is adapted to compress the fluid toward the housing outlet. The compressing mechanism is disposed in the housing. A drive unit is operatively connected to the compressing mechanism for driving the compressing mechanism to compress fluid. A suction duct is disposed in the housing. The suction duct extends vertically downward from the housing inlet toward a sump defined in the housing. The suction duct is configured for attachment to a motor housing. The suction duct has a duct inlet fluidically connected with the housing inlet, and defines a passage fluidically connecting the duct inlet with an interior cavity of the housing. A suction gas filter disposed in the suction duct, and having a filter screen positioned downstream of the duct inlet.

公开(公告)号：US20090311119A1

公开(公告)日：2009-12-17

申请号：US12307805

申请日：2007-07-27

申请人： Steven J. Holden ,  Alexander Lifson ,  Bruce A. Fraser

发明人： Steven J. Holden ,  Alexander Lifson ,  Bruce A. Fraser

IPC分类号： F04C18/16 ,  F04C28/00 ,  F01C20/18

CPC分类号： F04C18/16 ,  F04C27/006 ,  F04C28/265

摘要： A screw compressor has a housing (22; 302) having first (53; 330) and second (58; 340) ports along a flowpath. A first rotor (26; 306) has a lobed body. A second rotor (28; 308, 310) has a lobed body enmeshed with the first rotor body. The rotors and housing cooperate to define a compression path between suction (60; 332) and discharge (62; 342) locations along the flowpath. Means (100, 110, 120; 200, 210, 220; 370, 380, 390) provide relative longitudinal movement between a blocking portion (57; 352) of the housing and at least one of the first rotor and second rotor between: a first condition wherein a pocket of the first and second rotors is closed by the blocking portion; and a second condition wherein the blocking portion does not close the pocket. To provide capacity control, a control system (110; 390) is configured to provide duty cycle control of the movement.

摘要翻译： 螺杆式压缩机具有沿着流路具有第一（53; 330）和第二（58,340）端口的壳体（22; 302）。 第一转子（26; 306）具有裂片体。 第二转子（28; 308,310）具有与第一转子本体啮合的裂片体。 转子和壳体协作以沿着流动路径在吸力（60; 332）和排放（62; 342）之间限定压缩路径。 装置（100,110,120; 200,210,220; 370,380,390）提供在壳体的阻挡部分（57; 352）与第一转子和第二转子中的至少一个之间的相对纵向运动： 第一状态，其中第一和第二转子的凹部被阻挡部分封闭; 以及第二状态，其中阻挡部分不关闭口袋。 为了提供容量控制，控制系统（110; 390）被配置为提供运动的占空比控制。

公开(公告)号：US07179067B2

公开(公告)日：2007-02-20

申请号：US10756019

申请日：2004-01-13

申请人： James William Bush ,  Robert Wilson ,  Bruce A. Fraser

发明人： James William Bush ,  Robert Wilson ,  Bruce A. Fraser

IPC分类号： F03C2/00 ,  F04C18/00

CPC分类号： F04C27/001 ,  F04C18/0269 ,  F04C2230/602 ,  F04C2230/91

摘要： An abradable coating is formed on portions of the flank wall of the wraps of a scroll compressor. The radially outer portions of the flank wall are left uncoated, and can bear a force between the scroll wraps. In this manner, the load is not transferred through a coated portion, but rather through the uncoated portion. As the scroll wraps move relative to each other at run-in, the abradable coating wears away leaving a tight fit between the flank walls at the radially inner locations.

摘要翻译： 在涡旋压缩机的涡卷的侧壁的部分上形成可磨损的涂层。 侧壁的径向外部部分保持未涂覆，并且能够在涡卷之间承受力。 以这种方式，负载不通过涂覆部分而是通过未涂覆部分传递。 当涡卷在接合时相对于彼此移动时，可磨损涂层磨损，留下在径向内部位置处的侧壁之间的紧密配合。