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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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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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3.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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4.发明授权Method for detecting low levels of alkylbenzene or mineral oil in polyol ester lubricants in the compressors 失效用于检测压缩机中多元醇酯润滑剂中低含量烷基苯或矿物油的方法
公开(公告)号：US5306643A
公开(公告)日：1994-04-26
申请号：US114404
申请日：1993-09-01
CPC分类号： G01N33/2888 , F04C2210/26 , Y10T436/21 , Y10T436/212
摘要： A method for detecting low level of alkylbenzene or mineral oil impurity in polyol ester lubricants for compressors. This method comprises mixing a mixture of alcohol and water with a sample of the lubricant and then observe the presence or absence of turbidity.
摘要翻译： 用于检测用于压缩机的多元醇酯润滑剂中低水平的烷基苯或矿物油杂质的方法。 该方法包括将醇和水的混合物与润滑剂样品混合，然后观察是否存在浊度。
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