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1. 发明申请

US20110132006A1 METHOD OF CONTROLLING INLET PRESSURE OF A REFRIGERANT COMPRESSOR 有权
标题翻译：控制压缩机压缩机入口压力的方法
公开(公告)号：US20110132006A1
公开(公告)日：2011-06-09
申请号：US12958675
申请日：2010-12-02
申请人： Scott C. Milton , Stan O. Hoium , Peter W. Freund , Bradley M. Ludwig
发明人： Scott C. Milton , Stan O. Hoium , Peter W. Freund , Bradley M. Ludwig
IPC分类号： F25B1/00 , F25B27/00 , F25B41/04
CPC分类号： F25B47/006 , F25B41/04 , F25B2327/001 , F25B2400/0403 , F25B2400/0409 , F25B2400/0411 , F25B2600/0261 , F25B2600/2501 , F25B2700/1933
摘要： A refrigeration unit includes an engine, a motor capable of producing a similar power output as the engine, and a compressor driven by one of the engine and the motor. The compressor includes a suction inlet and a discharge outlet. The refrigeration unit also includes a condenser in fluid communication with the discharge outlet through which pressurized, gaseous refrigerant is condensed, an evaporator in fluid communication with the condenser to receive liquid refrigerant and return gaseous refrigerant to the suction inlet, a passageway having a first end in fluid communication with an outlet of the condenser, and a second end in fluid communication with the suction inlet, and a purge valve defining at least a portion of the passageway between the first and second ends. The purge valve is operable to selectively divert liquid refrigerant from the condenser to the suction inlet to increase the pressure in the suction inlet.
摘要翻译：制冷单元包括发动机，能够产生与发动机相似的动力输出的电动机和由发动机和电动机之一驱动的压缩机。压缩机包括吸入口和排出口。制冷单元还包括与排出口流体连通的冷凝器，加压的气态制冷剂通过该冷凝器冷凝，蒸发器与冷凝器流体连通以接收液体制冷剂并将气态制冷剂返回到吸入口;具有第一端与冷凝器的出口流体连通，以及与吸入口流体连通的第二端，以及限定在第一和第二端之间的通道的至少一部分的吹扫阀。净化阀可操作以选择性地将液体制冷剂从冷凝器转移到吸入口以增加吸入口中的压力。

2. 发明授权

US06401864B1 Collapsible stabilizing devices 失效
标题翻译：可折叠稳定装置
公开(公告)号：US06401864B1
公开(公告)日：2002-06-11
申请号：US09774499
申请日：2001-01-31
申请人： Matthew D. Stringer , Peter W. Freund
发明人： Matthew D. Stringer , Peter W. Freund
IPC分类号： E04G118
CPC分类号： B66F9/07559 , B66F11/04 , E04G1/22 , E04G1/24
摘要： A stabilizing system includes at least one outrigger assembly. Each outrigger assembly has a pivotable first leg operably connected to a second leg. At least one locking mechanism is operatively mounted to the pivotable first leg and the second leg. At least one sensing mechanism is connected to the first leg for detecting when the first and second legs are in a stabilized position.
摘要翻译：稳定系统包括至少一个外伸支架组件。每个支腿组件具有可枢转的第一腿部，其可操作地连接到第二腿部。至少一个锁定机构可操作地安装到可枢转的第一腿部和第二腿部。至少一个感测机构连接到第一腿部，用于检测第一和第二腿部何时处于稳定位置。

3. 发明授权

US5596878A Methods and apparatus for operating a refrigeration unit 失效
标题翻译：用于操作制冷单元的方法和装置
公开(公告)号：US5596878A
公开(公告)日：1997-01-28
申请号：US494453
申请日：1995-06-26
申请人： Jay L. Hanson , James E. Nixon , Stanley O. Hoium , Peter W. Freund
发明人： Jay L. Hanson , James E. Nixon , Stanley O. Hoium , Peter W. Freund
IPC分类号： B60H1/00 , F25B1/047 , F25B5/02 , F25B27/00 , F25B29/00 , F25B49/02 , F25B13/00
CPC分类号： B60H1/00007 , F25B1/047 , F25B27/00 , F25B29/003 , F25B49/02 , F25B5/02 , F25B2400/13
摘要： A refrigeration unit of the type having an economizer cycle driven by a prime mover cooled by a liquid coolant. Electrical control configures refrigerant flow paths of the unit to provide heating and cooling cycles, as required to control the temperature of a conditioned space to a predetermined set point temperature. Heat from the liquid coolant is used to enhance the heating cycle. A heating cycle is initiated immediately, when required, when the temperature of the liquid coolant is above a predetermined temperature. A heating cycle is delayed by a special refrigeration cycle which increases the load on the prime mover, when the temperature of the liquid coolant is not above the predetermined temperature. In a preferred embodiment of the invention, the special refrigeration cycle provides simultaneous heating and cooling cycles, which include evaporating liquid refrigerant in an evaporator associated with the conditioned space, as in a cooling cycle, while condensing hot gas refrigerant from the compressor in a condenser associated with the conditioned space, as in a heating cycle.
摘要翻译：这种类型的制冷装置具有由由液体冷却剂冷却的原动机驱动的节能循环。电气控制根据需要配置单元的制冷剂流动路径以提供加热和冷却循环，以将调节空间的温度控制到预定的设定点温度。来自液体冷却剂的热量用于增强加热循环。当需要时，当液体冷却剂的温度高于预定温度时立即开始加热循环。当液体冷却剂的温度不高于预定温度时，加热循环被延迟特殊的制冷循环，这增加了原动机的负荷。在本发明的优选实施例中，专用制冷循环提供同时的加热和冷却循环，其包括在与冷却循环中相关联的蒸发器中蒸发液体制冷剂，同时冷凝来自压缩机的热气体制冷剂在冷凝器与调节空间相关联，如在加热循环中。

4. 发明授权

US5477695A Methods and apparatus for operating a refrigeration system characterized by controlling engine coolant 失效
公开(公告)号：US5477695A
公开(公告)日：1995-12-26
申请号：US369443
申请日：1995-01-06
申请人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
发明人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
IPC分类号： F25B1/00 , F01P3/20 , F25B5/00 , F25B27/00 , F25B29/00 , F25B31/00 , F25B43/02
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.

5. 发明授权

US5465586A Methods and apparatus for operating a refrigeration system characterized by controlling engine coolant 失效
标题翻译：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
申请人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
发明人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
IPC分类号： F25B1/00 , F01P3/20 , F25B5/00 , F25B27/00 , F25B29/00 , F25B31/00 , F25B43/02
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。

6. 发明授权

US5408836A Methods and apparatus for operating a refrigeration system characterized by controlling engine coolant 失效
公开(公告)号：US5408836A
公开(公告)日：1995-04-25
申请号：US182319
申请日：1994-01-14
申请人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
发明人： Lars I. Sjoholm , Sung L. Kwon , David H. Taylor , Lee J. Erickson , Peter W. Freund
IPC分类号： F25B1/00 , F01P3/20 , F25B5/00 , F25B27/00 , F25B29/00 , F25B31/00 , F25B43/02
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.

7. 发明授权

US6095427A Temperature control system and method for efficiently obtaining and maintaining the temperature in a conditioned space 失效
标题翻译：用于有效地获得和维持调节空间中的温度的温度控制系统和方法
公开(公告)号：US6095427A
公开(公告)日：2000-08-01
申请号：US296569
申请日：1999-04-22
申请人： Stanley O. Hoium , Peter W. Freund
发明人： Stanley O. Hoium , Peter W. Freund
IPC分类号： F24F11/00 , F25B1/047 , F25B5/02 , F25B27/00 , G05D23/19 , F24F7/00
CPC分类号： F24F11/006 , B60H1/3232 , G05D23/1917 , F24F11/0012 , F24F2011/0064 , F25B1/047 , F25B2400/13 , F25B27/00 , F25B5/02
摘要： A method for efficiently maintaining the temperature of fluid in a conditioned space at a predetermined set point temperature, the method comprising the steps of: (a) operating the temperature control system in a first operating mode; (b) sensing the temperature of the conditioned space fluid; (c) calculating the Integral Error of the temperature of the conditioned space fluid; and (d) if the Integral Error equals or exceeds a predetermined Integral Error threshold value for the first operating mode, switching the unit to a second operating mode.
摘要翻译：一种用于在预定设定点温度下有效地保持调节空间中的流体温度的方法，所述方法包括以下步骤：（a）以第一操作模式操作温度控制系统; （b）感测调节空间流体的温度; （c）计算调节空气流体温度的积分误差; 和（d）如果积分误差等于或超过用于第一操作模式的预定积分误差阈值，则将该单元切换到第二操作模式。

8. 发明授权

US5598718A Refrigeration system and method utilizing combined economizer and engine coolant heat exchanger 失效
标题翻译：采用联合节能器和发动机冷却剂换热器的制冷系统和方法
公开(公告)号：US5598718A
公开(公告)日：1997-02-04
申请号：US502043
申请日：1995-07-13
申请人： Peter W. Freund , Lars I. Sjoholm , Joseph E. LaBossiere
发明人： Peter W. Freund , Lars I. Sjoholm , Joseph E. LaBossiere
IPC分类号： B60H1/00 , B60H1/32 , F25D29/00
CPC分类号： B60H1/3232 , B60H1/00914 , F25D29/003 , B60H2001/00942 , B60H2001/00949 , B60H2001/00957
摘要： A transport refrigeration system for heating and cooling a conditioned space is provided that includes an improved, combined heat exchanger and economizer for increasing the efficiency of the refrigeration cycle. The system includes a refrigerant compressor driven by an internal combustion engine that includes suction and discharge ports, and an intermediate pressure port; a refrigeration circuit including a heating coil and evaporator assembly thermally connected to the conditioned space, and a mode valve for selectively routing the refrigerant through either the heating coil or the evaporator assembly via a condenser to heat or cool the conditioned space, respectively. The combined heat exchanger and economizer includes a tube connected to the intermediate suction port of the compressor, a shell for conducting refrigerant to the evaporator assembly depending upon the position of the mode valve, and a jacket for circulating engine coolant. During the heating mode of the system, a volume of refrigerant is maintained in the shell of the combined heat exchanger and economizer to act as a thermal buffer for heat transferred between engine coolant circulating through the jacket, and refrigerant flowing through the tube of the device.
摘要翻译：提供了一种用于加热和冷却调节空间的运输制冷系统，其包括改进的组合热交换器和节能器，用于提高制冷循环的效率。该系统包括由包括吸入口和排出口的内燃机驱动的制冷剂压缩机和中间压力口; 包括与调节空间热连接的加热线圈和蒸发器组件的制冷回路，以及用于通过冷凝器选择性地将制冷剂通过加热线圈或蒸发器组件路由选择性地将加热或冷却调节空间的模式阀。组合的热交换器和节能器包括连接到压缩机的中间吸入口的管，根据模式阀的位置将制冷剂传导到蒸发器组件的外壳和用于循环发动机冷却剂的护套。在系统的加热模式期间，在组合的热交换器和节能器的壳体中保持一定体积的制冷剂，以作为在通过套管循环的发动机冷却剂之间传递的热传递的热缓冲器和流过该装置的管的制冷剂。

9. 发明授权

US09453669B2 Method of controlling inlet pressure of a refrigerant compressor 有权
标题翻译：控制制冷剂压缩机入口压力的方法
公开(公告)号：US09453669B2
公开(公告)日：2016-09-27
申请号：US12958675
申请日：2010-12-02
申请人： Scott C. Milton , Stan O. Hoium , Peter W. Freund , Bradley M. Ludwig
发明人： Scott C. Milton , Stan O. Hoium , Peter W. Freund , Bradley M. Ludwig
IPC分类号： F25B41/00 , F25B49/00 , F25B47/00 , F25B41/04
CPC分类号： F25B47/006 , F25B41/04 , F25B2327/001 , F25B2400/0403 , F25B2400/0409 , F25B2400/0411 , F25B2600/0261 , F25B2600/2501 , F25B2700/1933
摘要： A refrigeration unit includes an engine, a motor capable of producing a similar power output as the engine, and a compressor driven by one of the engine and the motor. The compressor includes a suction inlet and a discharge outlet. The refrigeration unit also includes a condenser in fluid communication with the discharge outlet through which pressurized, gaseous refrigerant is condensed, an evaporator in fluid communication with the condenser to receive liquid refrigerant and return gaseous refrigerant to the suction inlet, a passageway having a first end in fluid communication with an outlet of the condenser, and a second end in fluid communication with the suction inlet, and a purge valve defining at least a portion of the passageway between the first and second ends. The purge valve is operable to selectively divert liquid refrigerant from the condenser to the suction inlet to increase the pressure in the suction inlet.
摘要翻译：制冷单元包括发动机，能够产生与发动机相似的动力输出的电动机和由发动机和电动机之一驱动的压缩机。压缩机包括吸入口和排出口。制冷单元还包括与排出口流体连通的冷凝器，加压的气态制冷剂通过该冷凝器冷凝，蒸发器与冷凝器流体连通以接收液体制冷剂并将气态制冷剂返回到吸入口;具有第一端与冷凝器的出口流体连通，以及与吸入口流体连通的第二端，以及限定在第一和第二端之间的通道的至少一部分的吹扫阀。净化阀可操作以选择性地将液体制冷剂从冷凝器转移到吸入口以增加吸入口中的压力。

10. 发明授权

US07143594B2 Control method for operating a refrigeration system 有权
标题翻译：操作制冷系统的控制方法
公开(公告)号：US07143594B2
公开(公告)日：2006-12-05
申请号：US10926603
申请日：2004-08-26
申请人： Bradley M. Ludwig , Peter W. Freund
发明人： Bradley M. Ludwig , Peter W. Freund
IPC分类号： F25B41/04
CPC分类号： F25B41/04 , F25B41/043 , F25B49/02 , F25B2400/0403 , F25B2400/13 , F25B2400/23 , F25B2500/19 , F25B2600/2501 , F25B2600/2507 , F25B2700/1931 , F25B2700/2106 , F25B2700/21152 , F25B2700/21172
摘要： A method of controlling a heating cycle of a refrigeration system is provided that includes a refrigerant circuit. The refrigerant circuit includes a compressor having a suction port and an outlet having a discharge port with a hot gas compressor discharge line, a condenser for condensing the refrigerant, an evaporator for evaporating the refrigerant and an expansion valve. The method includes using refrigerant from the hot gas compressor discharge line to heat the evaporator during a heating cycle, detecting periodically a discharge superheat of the refrigerant leaving the outlet of the compressor, producing a control signal representing a difference between the detected discharge superheat and a minimum discharge superheat setpoint, adjusting the flow rate of the refrigerant to the suction port of the compressor according to the control signal so as to maintain the discharge superheat of the refrigerant at the outlet of the compressor substantially at the minimum discharge superheat setpoint.
摘要翻译：提供了一种控制制冷系统的加热循环的方法，其包括制冷剂回路。制冷剂回路包括具有吸入口和出口的压缩机，该排出口具有热气体压缩机排出管路的排出口，用于冷凝制冷剂的冷凝器，用于蒸发制冷剂的蒸发器和膨胀阀。该方法包括使用来自热气体压缩机排出管线的制冷剂在加热循环期间加热蒸发器，周期性地检测离开压缩机出口的制冷剂的排放过热，产生表示检测到的排出过热与a 最小排放过热设定点，根据控制信号调节制冷剂到压缩机吸入口的流量，以保持压缩机出口处的制冷剂的排放过热基本处于最小排放过热设定点。

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