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公开(公告)号：US5201185A
公开(公告)日：1993-04-13
申请号：US728472
申请日：1991-07-11
CPC分类号： B60H1/3232 , B60H1/3207 , F25B13/00 , F25B47/022 , F25D21/006 , F25D29/003
摘要： The invention relates to methods of defrosting an evaporator coil of a transport refrigeration unit which includes microprocessor based electrical control. The electrical control maintains the temperature of a conditioned space at a predetermined set point temperature via hot gas heating and cooling cycles. The evaporator coil is defrosted to remove frost and ice by closing a damper to the served space and initiating a heating cycle. At the termination of defrost, a cooling cycle is initiated, but the damper is maintained in a closed position for a predetermined period of time to remove heat built up during the defrost process. The invention also detects damper malfunctions, including failure to close prior to defrost, and failure to open after defrost. The invention also evaluates manual and timed requests for a defrost operation, overriding the requests in response to predetermined conditions.
摘要翻译： 本发明涉及对包括基于微处理器的电气控制的运输制冷单元的蒸发器盘管进行除霜的方法。 电气控制通过热气体加热和冷却循环将调节空间的温度保持在预定的设定点温度。 蒸发器盘管被解冻以通过将阻尼器关闭到所服务的空间并开始加热循环来去除霜冻和冰。 在除霜结束时，开始冷却循环，但将阻尼器保持在关闭位置一段预定的时间以除去除霜过程中积聚的热量。 本发明还检测阻尼器故障，包括在除霜之前未能关闭，以及除霜后未能打开。 本发明还评估用于除霜操作的手动和定时请求，以响应于预定条件来覆盖请求。
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公开(公告)号：US5172560A
公开(公告)日：1992-12-22
申请号：US858806
申请日：1992-03-27
申请人： Romuald M. Jurewicz , Jay L. Hanson , Jeffrey B. Berge , Jayaram Seshadri , Alan D. Gustafson , David A. Christiansen , Richard A. Johnson , Lowell B. Naley , Doyle G. Herrig
发明人： Romuald M. Jurewicz , Jay L. Hanson , Jeffrey B. Berge , Jayaram Seshadri , Alan D. Gustafson , David A. Christiansen , Richard A. Johnson , Lowell B. Naley , Doyle G. Herrig
CPC分类号： F25B41/04 , B60H1/00014 , B60H1/3226 , B60H1/3232 , F25B27/00 , F25D29/003 , F25B2600/0253 , F25B41/043
摘要： A method of operating a transport refrigeration system having a compressor driven by a prime mover at a selected one of high and low speeds, an evaporator, and an evaporator blower driven by the prime mover. Refrigeration control provides an error value which controls the temperature of a load space to a predetermined set point via heating and cooling modes. The method includes the steps of driving the compressor at high speed during pull down, and injecting hot gas into the evaporator when the error is reduced to a predetermined value. The prime mover is maintained at high speed, to keep evaporator air flow at a high rate, continuing a relatively rapid temperature pull-down across the entire load space. The speed of the prime mover is reduced to low speed when the error is further reduced to a second value, which also initiates suction line modulation while maintaining hot gas injection.
摘要翻译： 一种运行制冷系统的方法，所述运输制冷系统具有由原动机以高速和低速选定的一个驱动的压缩机，蒸发器和由原动机驱动的蒸发器鼓风机。 制冷控制提供了通过加热和冷却模式将负载空间的温度控制到预定设定点的误差值。 该方法包括以下步骤：在下拉期间高速驱动压缩机，当误差减小到预定值时，将热气注入蒸发器。 原动机保持高速运转，以保持蒸发器空气流速高，在整个负载空间上持续相对较快的温度下拉。 当误差进一步降低到第二值时，原动机的速度降低到低速，这也在保持热气体注入的同时启动吸入管线调制。
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3.发明授权Method of converting a time based data logger to a time and random event based data logger 失效将基于时间的数据记录器转换为基于时间和随机事件的数据记录器的方法
公开(公告)号：US5564285A
公开(公告)日：1996-10-15
申请号：US310527
申请日：1994-09-22
CPC分类号： G07C5/085 , B60H1/3225 , B60H1/3232 , F25D29/003 , G05B23/027
摘要： A method of adding asynchronous logging of data relative to events into a time based data logger which stores operator initiated headers in a data array, as well as synchronously storing data relative to variables of a transport refrigeration unit at predetermined constant time intervals. The operator associated headers include a preamble having a predetermined number of data bytes which include a header designator and a digital code which identifies the specific type of header being entered. An event header is provided having a preamble which includes the same number of data bytes as the preamble of the operator associated headers, for each type of event to be asynchronously stored in the data array. The header designator associated with the operator associated headers is inserted into the preamble of each of the event headers. A digital code is provided which identifies each event header, and the digital code is inserted into the preamble of each of the event headers. A data field follows the preamble of each event header, with predetermined data being inserted into the data field when an event occurs. An event header is stored in the data array asynchronously, at the time the associated event occurs. Each event header is time stamped when stored in the data array, and data stored in the data array is downloaded to a predetermined device, including asynchronously stored event headers and synchronous data stored at predetermined time intervals.
摘要翻译： 将相对于事件的数据的异步记录添加到基于时间的数据记录器中的方法，所述数据记录器将操作者发起的报头存储在数据阵列中，以及以预定的恒定时间间隔同步地存储与传送制冷单元的变量相关的数据。 运营商相关联的报头包括具有预定数量的数据字节的前导码，其包括报头指示符和标识正在输入的报头的特定类型的数字代码。 提供事件报头，其具有包括与操作者相关联的报头的前导码相同数量的数据字节的前同步码，用于要异步地存储在数据阵列中的每种类型的事件。 与操作员相关联的报头相关联的报头指示符被插入每个事件报头的前导码中。 提供了识别每个事件标题的数字代码，并且将数字代码插入每个事件标题的前导码中。 数据字段跟随每个事件标题的前导码，当事件发生时，预定的数据被插入到数据字段中。 在关联事件发生时，事件头将以异步方式存储在数据数组中。 每个事件标题被存储在数据阵列中时间戳，存储在数据阵列中的数据被下载到预定的设备，包括以预定的时间间隔存储的异步存储的事件标题和同步数据。
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4.发明授权
公开(公告)号：US4899549A
公开(公告)日：1990-02-13
申请号：US304686
申请日：1989-01-03
CPC分类号： F25B41/04 , F25B27/00 , F25D29/003 , F25B41/043
摘要： A transport refrigeration system operable in cooling and heating cycles to maintain the temperature of a fresh load in a conditioned space extremely close to a predetermined set point temperature, with the cooling cycle primarily controlling the load temperature in ambients above freezing. The transport refrigeration system includes a compressor driven by a prime mover in one of two selectable speeds, an air delivery system which provides a substantially constant volume of conditioned air for a conditioned load space regardless of prime mover speed, a modulation valve in a suction line of the compressor, and a digital thermostat which senses the temperature of air returning to an evaporator. The digital thermostat controls the modulation valve via modulation control in a predetermined temperature range above and below set point, in both the heating and cooling cycles.
摘要翻译： 运输制冷系统，其可在冷却和加热循环中操作，以将新鲜负荷的温度维持在非常接近预定设定点温度的调节空间中，其中冷却循环主要控制在高于冰点的环境中的负载温度。 运输制冷系统包括由两个可选速度之一的原动机驱动的压缩机，空气输送系统，其为原动机速度的调节负载空间提供基本恒定体积的调节空气;吸入管线中的调节阀 的压缩机，以及数字恒温器，其感测返回到蒸发器的空气的温度。 在加热和冷却循环中，数字恒温器通过调节控制来控制调制控制在预定温度范围内高于和低于设定值。
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公开(公告)号：US5197670A
公开(公告)日：1993-03-30
申请号：US782187
申请日：1991-10-24
申请人： Jay L. Hanson , Romuald M. Jurewicz
发明人： Jay L. Hanson , Romuald M. Jurewicz
CPC分类号： F25D29/003 , B60H1/00014 , B60H1/3208 , F25D31/005
摘要： A method of operating a transport refrigeration system having a refrigerant compressor driven by a prime mover. Electrical control maintains the temperature of a load in a conditioned space close to a desired set point via heating, cooling and null cycles, with the prime mover being started and stopped, as required, in response to the difference between the temperature of the conditioned space and a selected set point temperature, i.e., temperature error. Restarting of the prime mover is dynamically controlled by controlling the magnitude of the restart temperature error in response to the difference between the temperature of the conditioned space and ambient temperature.
摘要翻译： 一种操作具有由原动机驱动的制冷剂压缩机的运输制冷系统的方法。 电气控制通过加热，冷却和零点循环来维持靠近所需设定点的调节空间中的负载的温度，原动机根据需要响应于调节空间的温度之间的差异而启动和停止 和选定的设定点温度，即温度误差。 通过响应于调节空间的温度和环境温度之间的差来控制重启温度误差的大小来动态地控制原动机的重新启动。
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公开(公告)号：US5123253A
公开(公告)日：1992-06-23
申请号：US723464
申请日：1991-07-11
申请人： Jay L. Hanson , Romuald M. Jurewicz
发明人： Jay L. Hanson , Romuald M. Jurewicz
IPC分类号： F25D29/00 , G05B19/042 , G05B19/10 , G05D23/19
CPC分类号： G05D23/1917 , F25D29/003 , G05B19/0428 , G05B19/10
摘要： A method of operating a transport refrigeration unit having electrical control which includes a display, including the steps of detecting the occurrence of predetermined events in the transport refrigeration unit, and classifying at least certain of them into first, second and third categories of fault conditions, and into a fourth category related to maintenance associated events. When a first category fault occurs, the unit is shut down, a visual alarm is flashed, and the nature of the fault is immediately identified. When a second category fault occurs, a visual alarm is steadily energized, and the nature of the fault if immediately identified. When third category faults and fourth category events occur, they are stored and periodically displayed, with the display respectively identifying the nature of the fault and the type of maintenance event.
摘要翻译： 一种操作包括显示器的具有电气控制的运输制冷单元的方法，包括以下步骤：检测运输制冷单元中的预定事件的发生，并将其至少某些分类为第一，第二和第三类故障状况， 并进入与维护相关事件相关的第四类。 当发生第一类故障时，单元关闭，闪烁视觉报警，并立即识别故障的性质。 当发生第二类故障时，视觉报警稳定地通电，如果立即识别出故障的性质。 当发生第三类故障和第四类事件时，它们被存储并定期显示，显示器分别标识故障的性质和维护事件的类型。
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7.发明授权
公开(公告)号：US5181389A
公开(公告)日：1993-01-26
申请号：US875861
申请日：1992-04-26
申请人： Jay L. Hanson , Romuald M. Jurewicz
发明人： Jay L. Hanson , Romuald M. Jurewicz
CPC分类号： F25B49/005 , B60H1/00657 , B60H1/00985 , B60H1/3225 , B60H1/3232 , G05D23/1905 , G07C5/085
摘要： A transport refrigeration unit, and methods and apparatus for monitoring the operation thereof, with the unit conditioning a load to a selected set point temperature via commanded cooling and heating cycles. A thermostat provides a digital signal as a function of the load temperature and the selected set point temperature, with each toggling of the least significant bit (LSB) thereof indicating a predetermined change in load temperature. A timer initiates a predetermined timing period with each toggling of the LSB, with the timing period being a dynamic function of the selected set point temperature. Expiration of the timing period before the next bit toggle initiates an alarm signal indicating the rate-of-change of load temperature is not within an acceptable limit for the selected set point temperature. A comparison of successive digital signals also results in an alarm signal when the direction of temperature change is not consistent with the commanded operating cycle.
摘要翻译： 运输制冷单元，以及用于监视其运行的方法和装置，其中单元通过指令的冷却和加热循环将负载调节到所选择的设定点温度。 恒温器根据负载温度和所选择的设定点温度提供数字信号，其中最低有效位（LSB）的每个触发指示负载温度的预定变化。 定时器启动每个LSB切换的预定定时周期，其中定时周期是所选择的设定点温度的动态功能。 在下一位切换之前的定时周期到期启动指示负载温度变化率的报警信号不在所选设定点温度的可接受极限内。 连续数字信号的比较也会在温度变化方向与指令的运行周期不一致时产生报警信号。
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8.发明授权
公开(公告)号：US5454229A
公开(公告)日：1995-10-03
申请号：US245266
申请日：1994-05-18
CPC分类号： B60H1/3208 , F25B27/00 , F25B49/005 , F25D29/003 , F25B2500/26
摘要： Methods and apparatus for monitoring conditions which may cause shut down of a refrigeration unit. When a condition of the refrigeration unit is detected which requires shut down, a shut down counter is incremented and the shut down is made with the provision for automatic restart of the refrigeration unit in response to predetermined parameters of the refrigeration unit. When the predetermined parameters initiate automatic re-start of the refrigeration unit, a timer is started. If the refrigeration unit operates for a predetermined period of time without shut down, the counting means is reset. A shut down before expiration of the predetermined timing period again increments the shut down counter. In one embodiment, when a predetermined condition which may cause shut down approaches a predetermined shut down value, the methods and apparatus modify the operation of the refrigeration unit one or more times in an attempt to prevent shut down. A predetermined count value on the shut down counter prevents further automatic re-starts of the refrigeration unit. In a preferred embodiment, the monitored conditions which may cause shut down are the high side pressure of the refrigeration unit, and, when a refrigerant compressor is driven by an internal combustion engine, the temperature of the engine.
摘要翻译： 用于监测可能导致制冷单元关闭的状况的方法和装置。 当检测到需要关闭的制冷单元的状态时，关闭计数器增加，并且响应于制冷单元的预定参数而使制冷单元自动重新启动进行关闭。 当预定参数启动制冷单元的自动再启动时，启动定时器。 如果制冷单元在预定时间段内操作而不关闭，则计数装置被复位。 在预定时间期限到期之前关闭再次增加关闭计数器。 在一个实施例中，当可能导致关闭的预定条件接近预定的关闭值时，方法和装置一次或多次地修改制冷单元的操作，以试图防止关闭。 关闭计数器上的预定计数值防止制冷单元进一步自动重启。 在一个优选实施例中，可能导致关闭的监视条件是制冷单元的高侧压力，并且当制冷剂压缩机由内燃机驱动时，发动机的温度。
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9.发明授权Method of starting and running an internal combustion engine connected to a refrigerant compressor 失效连接到制冷剂压缩机的内燃机的启动和运行方法
公开(公告)号：US5331821A
公开(公告)日：1994-07-26
申请号：US114723
申请日：1993-08-31
申请人： Jay L. Hanson , Doyle G. Herrig , James E. Nixon , Gerald J. Ladendorf , Lowell B. Naley , Norman F. Spear
发明人： Jay L. Hanson , Doyle G. Herrig , James E. Nixon , Gerald J. Ladendorf , Lowell B. Naley , Norman F. Spear
CPC分类号： F25D29/003 , B60H1/322 , B60H1/3226
摘要： A method of starting and running an internal combustion engine connected to drive a refrigerant compressor in a refrigeration system which operates the engine at predetermined first and second speeds in response to a predetermined control algorithm, with the first speed being lower than the second speed. The method includes the step of starting and running the engine at the first speed, preventing switching from the first to the second speed in response to the control algorithm during an initial dynamic delay period following the step of starting the engine. The method then includes the step of determining the length of the initial dynamic delay period as a function of at least one predetermined parameter of the engine, and selecting the at least one predetermined engine parameter during the initial dynamic delay period.
摘要翻译： 一种起动和运行内燃机的方法，所述内燃机被连接以驱动制冷系统中的制冷剂压缩机，所述制冷系统响应于预定的控制算法以预定的第一和第二速度操作所述发动机，其中所述第一速度低于所述第二速度。 该方法包括以第一速度启动和运行发动机的步骤，在起动发动机的步骤之后的初始动态延迟时段期间，响应于控制算法，防止从第一速度到第二速度的切换。 该方法然后包括确定作为发动机的至少一个预定参数的函数的初始动态延迟周期的长度的步骤，以及在初始动态延迟周期期间选择至少一个预定的引擎参数。
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公开(公告)号：US5596878A
公开(公告)日：1997-01-28
申请号：US494453
申请日：1995-06-26
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。
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