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1.发明授权Methods and apparatus for operating a refrigeration system characterized by controlling maximum operating pressure 失效用于操作制冷系统的方法和装置，其特征在于控制最大工作压力
公开(公告)号：US5400609A
公开(公告)日：1995-03-28
申请号：US182912
申请日：1994-01-14
申请人： Lars I. Sjoholm , Sung L. Kwon , Lee J. Erickson
发明人： Lars I. Sjoholm , Sung L. Kwon , Lee J. Erickson
CPC分类号： F25B40/00 , F25B27/00 , F25B29/003 , F25B49/022 , F25B2400/13 , F25B2600/2513
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling maximum operating pressure.
摘要翻译： 具有省煤器循环的类型的制冷系统除了加热和冷却循环之外还提供零循环，而不关闭压缩机原动机，以保持调节空间中的气流。 第一，第二和第三个可控阀门：（1）选择主冷凝器和辅助冷凝器，（2）打开和关闭液体管线，（3）打开和关闭向节能换热器提供暖液体的管线。 在空循环期间，并且优选以多个可选择的预定打开/关闭模式，阀被控制在至少一个预定的打开/关闭模式，以在与实际匹配的净热增益或损失发生的任何瞬间提供零循环 在空调空间。 因此，被处理空间的温度将更加容易地保持在接近设定点的零点温度范围内，从而为存储在其中的易腐品的更长的保存期限提供了对调节空间的温度的更平滑和更精确的控制。 该系统通过控制最大工作压力来实现后者。
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公开(公告)号：US5246357A
公开(公告)日：1993-09-21
申请号：US919801
申请日：1992-07-27
CPC分类号： B01D46/2411 , B01D19/0052 , B01D46/0031 , F04C29/026 , Y10S418/01
摘要： An oil flooded screw compressor including suction, rotor, and discharge sections having suction, intermediate pressure, and discharge ports, respectively, and an oil sump. The discharge section includes radially spaced internal and external housings, with the internal housing receiving an oil-gas stream from the rotor section. A filter is disposed to surround the internal housing, with the filter including a cylindrical, foraminate body portion, an end wall, and a filter pad against the end wall. The oil-gas stream from the rotor section exits the inner housing, via an opening which forms part of a first stage of oil removal. The oil-gas stream strikes the filter pad, removing oil as the oil-gas stream is forced to turn 90 degrees to exit the filter through the foraminate body portion, which also removes oil. The filter functions as second and third stages of oil removal.
摘要翻译： 一种含油的螺杆式压缩机，包括分别具有吸入口，中间压力和排出口的抽吸，转子和排出部分以及油底壳。 排放部分包括径向间隔的内部和外部壳体，内部壳体接收来自转子部分的油气流。 过滤器设置成围绕内部壳体，其中过滤器包括圆柱形的有机体部分，端壁和抵靠端壁的过滤垫。 来自转子部分的油气流通过形成第一级除油部分的开口离开内壳。 油气流冲击过滤垫，当油气流被迫转动90度时，去除油，以通过有机体部分离开过滤器，这也可去除油。 过滤器用作除油的第二和第三阶段。
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公开(公告)号：US5228301A
公开(公告)日：1993-07-20
申请号：US919799
申请日：1992-07-27
申请人： Lars I. Sjoholm , Peter W. Freund , Sung L. Kwon , Lowell B. Naley , Lee J. Erickson , David H. Taylor
发明人： Lars I. Sjoholm , Peter W. Freund , Sung L. Kwon , Lowell B. Naley , Lee J. Erickson , David H. Taylor
CPC分类号： F25B27/00 , B60H1/00007 , F25B29/003 , F25B41/04 , F25D17/02 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein.
摘要翻译： 具有省煤器循环的类型的制冷系统除了加热和冷却循环之外还提供零循环，而不关闭压缩机原动机，以保持调节空间中的气流。 第一，第二和第三个可控阀门：（1）选择主冷凝器和辅助冷凝器，（2）打开和关闭液体管线，（3）打开和关闭向节能换热器提供暖液体的管线。 在空循环期间，并且优选以多个可选择的预定打开/关闭模式，阀被控制在至少一个预定的打开/关闭模式，以在与实际匹配的净热增益或损失发生的任何瞬间提供零循环 在空调空间。 因此，被处理空间的温度将更加容易地保持在接近设定点的零点温度范围内，从而为存储在其中的易腐品的更长的保存期限提供了对调节空间的温度的更平滑和更精确的控制。
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公开(公告)号：US5477695A
公开(公告)日：1995-12-26
申请号：US369443
申请日：1995-01-06
CPC分类号： F25B27/00 , F01P3/20 , F25B29/003 , F25B31/006 , F25B5/00 , F01P2060/04 , F01P2060/14 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling cooling circulation in the compressor oil cooler.
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5.发明授权Methods and apparatus for operating a refrigeration system characterized by controlling engine coolant 失效用于操作制冷系统的方法和装置，其特征在于控制发动机冷却剂
公开(公告)号：US5465586A
公开(公告)日：1995-11-14
申请号：US369432
申请日：1995-01-06
CPC分类号： F25B27/00 , F01P3/20 , F25B29/003 , F25B31/006 , F25B5/00 , F01P2060/04 , F01P2060/14 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling cooling circulation in the compressor oil cooler.
摘要翻译： 具有省煤器循环的类型的制冷系统除了加热和冷却循环之外还提供零循环，而不关闭压缩机原动机，以保持调节空间中的气流。 第一，第二和第三个可控阀门：（1）选择主冷凝器和辅助冷凝器，（2）打开和关闭液体管线，（3）打开和关闭向节能换热器提供暖液体的管线。 在空循环期间，并且优选以多个可选择的预定打开/关闭模式，阀被控制在至少一个预定的打开/关闭模式，以在与实际匹配的净热增益或损失发生的任何瞬间提供零循环 在空调空间。 因此，被处理空间的温度将更加容易地保持在接近设定点的零点温度范围内，从而为存储在其中的易腐品的更长的保存期限提供了对调节空间的温度的更平滑和更精确的控制。 该系统通过控制压缩机油冷却器中的冷却循环来实现后者。
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公开(公告)号：US5452994A
公开(公告)日：1995-09-26
申请号：US197629
申请日：1994-02-16
申请人： Lee J. Erickson
发明人： Lee J. Erickson
CPC分类号： F04B39/0016
摘要： A refrigerant compressor having a cylinder assembly which includes a piston mounted for reciprocal movement within a cylinder to provide suction and compression strokes which respectively introduce and compress a refrigerant vapor which may have entrained compressor lubricant. The piston includes a suction ring valve which is operated by pressure differentials during the suction and compression strokes to cause the suction ring valve to contact predetermined end surfaces of a predetermined end portion of the piston during the compression stroke and thereby close a refrigerant vapor supply opening surrounded by the predetermined end surfaces, and to cause the suction ring valve to lift from the predetermined end surfaces of the piston during the suction stroke to open the refrigerant vapor supply opening and introduce refrigerant vapor into a compression chamber of the cylinder assembly. The predetermined end surfaces of the piston include an open ended spiral groove which provides a spiral support surface for the suction ring valve, and a spiral depression which collects compressor lubricant entrained in refrigerant vapor, to provide support for the suction ring valve while reducing stiction forces created between the suction ring valve and the piston.
摘要翻译： 一种制冷压缩机，其具有气缸组件，该气缸组件包括安装成用于在气缸内往复运动的活塞，以提供分别引入和压缩可能带有压缩机润滑剂的制冷剂蒸汽的抽吸和压缩冲程。 活塞包括吸入环阀，其在吸入和压缩冲程期间由压力差操作，以使吸入环阀在压缩冲程期间接触活塞的预定端部的预定端面，从而闭合制冷剂蒸气供给开口 并且在抽吸行程期间使吸入环阀从活塞的预定端面提升，以打开制冷剂蒸气供给开口，并将制冷剂蒸汽引入到气缸组件的压缩室中。 活塞的预定端面包括提供用于吸入环阀的螺旋支撑表面的开放式螺旋槽，以及收集夹带在制冷剂蒸气中的压缩机润滑剂的螺旋凹陷，以提供对吸入环阀的支撑，同时降低静摩擦力 在吸入环阀和活塞之间产生。
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公开(公告)号：US5408836A
公开(公告)日：1995-04-25
申请号：US182319
申请日：1994-01-14
CPC分类号： F25B27/00 , F01P3/20 , F25B29/003 , F25B31/006 , F25B5/00 , F01P2060/04 , F01P2060/14 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling cooling circulation in the compressor oil cooler.
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公开(公告)号：US06467287B2
公开(公告)日：2002-10-22
申请号：US09930392
申请日：2001-08-15
IPC分类号： F25B3100
CPC分类号： F04C29/026 , F04C18/16 , F04C29/0007 , F04C2270/72 , F25B31/004 , F25B43/02 , F25B49/00
摘要： A compressor and oil separator assembly for compressing a fluid includes a suction end, a discharge end, and first and second rotors rotatably mounted between the suction and discharge ends. A discharge line communicates with the discharge end, and an oil separator communicates with the discharge line. An oil sump communicates with the oil separator and an oil supply line communicates between the oil sump and the rotors. A bleed line selectively communicates between the discharge line and the oil supply line for equalizing a pressure differential between the suction end and the discharge end without causing substantial backward rotation of the rotors or displacement of oil to the rotors through the oil supply line. Preferably, the assembly further includes a valve that defines a portion of the discharge line and is also coupled to the bleed line.
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公开(公告)号：US5465587A
公开(公告)日：1995-11-14
申请号：US369444
申请日：1995-01-06
CPC分类号： F25B27/00 , F01P3/20 , F25B29/003 , F25B31/006 , F25B5/00 , F01P2060/04 , F01P2060/14 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling cooling circulation in the compressor oil cooler.
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公开(公告)号：US5410889A
公开(公告)日：1995-05-02
申请号：US182318
申请日：1994-01-14
CPC分类号： F25B49/02 , F25B27/00 , F25B29/003 , F25B5/00 , F25B1/10 , F25B2400/13
摘要： A refrigeration system of the type having an economizer cycle is provided with a null cycle, in addition to heating and cooling cycles, without shutting a compressor prime mover down, to preserve air flow in a conditioned space. First, second and third controllable valves respectively: (1) select main and auxiliary condensers, (2) open and close a liquid line, and (3) open and close a line which provides a warm liquid to an economizer heat exchanger. The valves are controlled in at least one predetermined open/close pattern during a null cycle, and preferably in a plurality of selectable predetermined open/close patterns, to provide a null cycle at any instant which substantially matches the net heat gain or loss taking place in the conditioned space. Thus, the temperature of the served space will be more apt to remain in a null temperature range close to set point, providing smoother and more accurate control over the temperature of the conditioned space for longer shelf life of perishables stored therein. The system achieves the latter by controlling a bypass value according to the load of the compressor.
摘要翻译： 具有省煤器循环的类型的制冷系统除了加热和冷却循环之外还提供零循环，而不关闭压缩机原动机，以保持调节空间中的气流。 第一，第二和第三个可控阀门：（1）选择主冷凝器和辅助冷凝器，（2）打开和关闭液体管线，（3）打开和关闭向节能换热器提供暖液体的管线。 在空循环期间，并且优选以多个可选择的预定打开/关闭模式，阀被控制在至少一个预定的打开/关闭模式，以在与实际匹配的净热增益或损失发生的任何瞬间提供零循环 在空调空间。 因此，被处理空间的温度将更加容易地保持在接近设定点的零点温度范围内，从而为存储在其中的易腐品的更长的保存期限提供了对调节空间的温度的更平滑和更精确的控制。 该系统通过根据压缩机的负载控制旁路值来实现后者。
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