Methods and apparatus for operating a refrigeration system
    1.
    发明授权
    Methods and apparatus for operating a refrigeration system 失效
    用于操作制冷系统的方法和装置

    公开(公告)号:US5228301A

    公开(公告)日:1993-07-20

    申请号:US919799

    申请日:1992-07-27

    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。

    Method of starting and running an internal combustion engine connected
to a refrigerant compressor
    2.
    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

    IPC分类号: B60H1/32 F25D29/00

    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。

    Container refrigeration unit
    3.
    发明授权
    Container refrigeration unit 失效
    集装箱制冷机组

    公开(公告)号:US4257240A

    公开(公告)日:1981-03-24

    申请号:US79014

    申请日:1979-09-26

    摘要: A transport refrigeration unit for a transport container in which the refrigeration unit has side-by-side evaporator and condenser compartments 18 and 20 in the upper portion of the exterior frame, with a power compartment 24 extending across the entire width of the lower portion of the unit, the power compartment containing an internal combustion engine 26, a motor-alternator 28 and a refrigerant compressor 30 in in-line relationship, a radiator coil 62 condenser coil 64 being in inclined disposition in the condenser compartment and receiving air therethrough from condenser fan 66, the evaporator coil 72 being inclined in the evaporator compartment and in a disposition in which a portion of the coil projects out of the plane of the rear face of the frame, and a pair of double inlet centrifugal fans 74 are provided in the upper portion of the evaporator compartment to draw air from the upper part of the container and direct it downwardly through the coil 72 back into the container, and separate panels 36 and 40 are provided for the evaporator and condenser compartments for individual access, the evaporator panel including an adjustable vent plate 38 for controlling the exchange of air between atmosphere and the container interior.

    摘要翻译: 一种用于运输容器的运输制冷单元,其中制冷单元在外框架的上部具有并排的蒸发器和冷凝器隔室18和20,其中电动隔室24延伸穿过外部框架的下部的整个宽度 该单元,包含内燃机26的动力室,电动机 - 交流发电机28和制冷剂压缩机30成为一体的关系;散热器线圈62,冷凝器盘管64,其倾斜配置在冷凝器室中,并从冷凝器 风扇66,蒸发器盘管72在蒸发器室内倾斜,并且线圈的一部分突出到框架的后表面的平面内,并且一对双入口离心风扇74设置在 蒸发器室的上部,以从容器的上部抽出空气并将其向下引导通过线圈72回到容器中,以及 为蒸发器和冷凝器隔室提供单独的面板36和40,用于单独进入,蒸发器面板包括用于控制大气和容器内部之间的空气交换的可调节排气板38。

    Method of operating a transport refrigeration system
    4.
    发明授权
    Method of operating a transport refrigeration system 失效
    操作运输制冷系统的方法

    公开(公告)号:US5161384A

    公开(公告)日:1992-11-10

    申请号:US833230

    申请日:1992-02-10

    摘要: A method of monitoring a transport refrigeration system which is effective regardless of the temperature of a served space relative to a selected set point temperature. Different "windows" of acceptable and marginal performance are provided in the form of different minimum magnitudes of .DELTA.T, i.e., the algebraic difference between the return and discharge air temperatures, as a function of ambient and return air temperatures. The transport refrigeration system is thus monitored at all times, during both cooling and hot gas heating modes, and also including during initial temperature pull down of the cargo space, enabling an early warning to be generated for a marginal performance, and an early shut down to be initiated for unacceptable performance. In a preferred embodiment, a maximum value of .DELTA.T is also provided, which, if exceeded by the actual .DELTA.T, indicates a restricted air flow in the cargo space.

    Electronic capacity control or direct expansion refrigeration of air
conditioning systems
    5.
    发明授权
    Electronic capacity control or direct expansion refrigeration of air conditioning systems 失效
    空调系统的电子容量控制或直接膨胀制冷

    公开(公告)号:US3973618A

    公开(公告)日:1976-08-10

    申请号:US536055

    申请日:1974-12-24

    摘要: The invention relates to the air conditioning of a storage compartment and is especially significant for a transport system. Air is circulated between an air tempering zone and the storage compartment, said air tempering zone having air cooling means and air heating means controlled by a thermostat. The thermostat has a wide range set point and depending upon what set point is selected, the thermostat is responsive either to the temperature of the air discharged from the tempering zone or the temperature of the air returning to said zone. When the set point is above a given point and the air is being cooled to near the desired temperature, said desired temperature is accurately obtained by the thermostat first sending a signal from a selected one of the two sensors that provides a step-reduction in the capacity of the cooling means and then sending a signal to a modulating valve that further reduces to the set point the capacity of the cooling means by a modulation reduction.

    摘要翻译: 本发明涉及储藏室的空调,对于运输系统尤为重要。 空气在空气回火区和储藏室之间循环,所述空气回火区具有空气冷却装置和由恒温器控制的空气加热装置。 恒温器具有宽范围的设定点,并且取决于所选择的设定点,恒温器响应于从回火区域排出的空气的温度或返回到所述区域的空气的温度。 当设定点高于给定点并且空气被冷却到接近所需温度时,通过恒温器首先从两个传感器中选择的一个传感器发送信号来精确地获得所需的温度,该信号在步骤 冷却装置的容量,然后将信号发送到调节阀,进一步通过调节减小将冷却装置的容量减小到设定点。