Transport temperature control system having enhanced low ambient heat
capacity
    1.
    发明授权
    Transport temperature control system having enhanced low ambient heat capacity 失效
    运输温度控制系统具有增强的低环境热容量

    公开(公告)号:US5669223A

    公开(公告)日:1997-09-23

    申请号:US665968

    申请日:1996-06-21

    Abstract: In a transport temperature control system having a cooling and heating mode of operation an apparatus and method are provided for enhancing the heating capacity during the heating mode of operation. A second expansion valve is provided to connect the higher pressure liquid line to the refrigerant circuit downstream of the evaporator. When additional refrigerant is needed in the heating circuit to increase heating capacity, especially during low ambient temperature operating conditions, the second expansion valve is caused to open to admit more refrigerant to the system. After passing through the second expansion valve low pressure gas is passed to the compressor, optimizing compressor efficiency such that an increased amount of hot refrigerant gas is delivered to the evaporator for enhanced heating capacity.

    Abstract translation: 在具有冷却和加热工作模式的运输温度控制系统中,提供了一种用于在加热操作模式期间增强加热能力的装置和方法。 提供第二膨胀阀以将高压液体管路连接到蒸发器下游的制冷剂回路。 当加热回路中需要额外的制冷剂以增加加热能力时,特别是在低环境温度运行条件下,使第二膨胀阀打开以允许更多的制冷剂进入系统。 在通过第二膨胀阀之后,低压气体被传递到压缩机,优化压缩机效率,使得增加量的热制冷剂气体被输送到蒸发器以提高加热能力。

    Method of monitoring a transport refrigeration unit and an associated
conditioned load
    3.
    发明授权
    Method of monitoring a transport refrigeration unit and an associated conditioned load 失效
    监测运输制冷单元和相关的调节负荷的方法

    公开(公告)号:US5579648A

    公开(公告)日:1996-12-03

    申请号:US425024

    申请日:1995-04-19

    CPC classification number: B60H1/3225 F25D29/003

    Abstract: A method of monitoring and protecting a transport refrigeration unit and a load in a load space to be conditioned by circulating air between the load space and the transport refrigeration unit. The transport refrigeration unit maintains a selected set point temperature SP in the load space by electrical control which selects cooling and hot gas heating conditioning modes initiated by switching a three-way valve between first and second positions. The method includes the step of detecting a reverse operating mode, wherein the actual conditioning mode is the opposite of the conditioning mode requested by the control means, and the step of pulsing the three-way valve in an attempt to cause the three-way valve, when stuck, to switch to the required position.

    Abstract translation: 一种监测和保护运输制冷单元和负载空间中的负载的方法,其通过在负载空间和运输制冷单元之间循环空气进行调节。 运输制冷单元通过电气控制在负载空间中保持选定的设定点温度SP,其选择通过在第一和第二位置之间切换三通阀而启动的冷却和热气体加热调节模式。 该方法包括检测反向操作模式的步骤,其中实际调节模式与由控制装置请求的调节模式相反,并且脉动三通阀的步骤试图使三通阀 当卡住时,切换到所需的位置。

    Transport refrigeration unit and method of operating same
    4.
    发明授权
    Transport refrigeration unit and method of operating same 失效
    运输制冷机组及其运行方法

    公开(公告)号:US5557938A

    公开(公告)日:1996-09-24

    申请号:US395014

    申请日:1995-02-27

    CPC classification number: F02D29/04 B60H1/3208 F25D29/003

    Abstract: Methods and apparatus for extending engine operating time, with a given amount of fuel, of an internal combustion engine connected to drive a compressor of a transport refrigeration unit. A fuel level signal is provided in response to the amount of fuel in a fuel tank associated with the internal combustion engine. The operation of the transport refrigeration unit is modified in different predetermined ways at predetermined different values of the fuel level signal, as fuel is consumed, to reduce the rate at which engine fuel is used after each modification. The time that a space being conditioned by the transport refrigeration unit for a given fuel supply is thus extended, maintaining temperature control of the conditioned space over this extended time while sacrificing non-load threatening, incremental degrees of control precision.

    Abstract translation: 用于延长发动机工作时间的方法和装置,该发动机工作时间与给定量的燃料连接,以驱动运输制冷单元的压缩机。 响应于与内燃机相关联的燃料箱中的燃料量来提供燃料液位信号。 随着燃料消耗,运输制冷单元的运行以不同的预定方式修改为燃料水平信号的预定不同值,以降低在每次修改之后使用发动机燃料的速率。 因此,运输制冷单元对于给定燃料供应进行调节的空间的时间延长,在该延长的时间内维持调节空间的温度控制,同时牺牲无负载威胁的增量控制精度。

    Transport refrigeration unit having means for increasing the amount of
refrigerant charge available
    5.
    发明授权
    Transport refrigeration unit having means for increasing the amount of refrigerant charge available 失效
    具有用于增加可用制冷剂量的装置的运输制冷单元

    公开(公告)号:US5415006A

    公开(公告)日:1995-05-16

    申请号:US153851

    申请日:1993-11-18

    Abstract: A transport refrigeration system having electrical control which controls the temperature in a served space via heating and cooling cycles using hot refrigerant gas from a refrigerant compressor. The refrigeration system has high and low pressure sides. The high pressure side includes a discharge manifold of the compressor, a condenser coil, a refrigerant receiver tank, and an evaporator coil associated with the served space. The low pressure side extends from the evaporator coil to a suction manifold of the compressor. A first controllable refrigerant flow path means is controlled by the electrical control to purge the condenser coil in response to predetermined system parameters, causing refrigerant trapped in the condenser coil to flow to the low pressure side of the system. A second controllable refrigerant flow path is controlled by the electrical control to pressurize the receiver tank in response to predetermined system parameters, forcing refrigerant to flow from the receiver tank to the evaporator coil.

    Abstract translation: 一种具有电气控制的运输制冷系统,其通过使用来自制冷剂压缩机的热的制冷剂气体经由加热和冷却循环来控制所服务空间中的温度。 制冷系统具有高低压侧。 高压侧包括压缩机的排出歧管,冷凝器盘管,制冷剂接收罐和与供应空间相关联的蒸发器盘管。 低压侧从蒸发器盘管延伸到压缩机的抽吸歧管。 第一可控制冷剂流动路径装置由电气控制来控制,以响应于预定的系统参数来清除冷凝器盘管,使得冷凝器盘管中被捕获的制冷剂流向系统的低压侧。 第二可控制冷剂流动路径由电气控制来控制,以响应于预定的系统参数对接收罐加压,迫使制冷剂从接收罐流到蒸发器盘管。

    Method of detecting short cycling of air discharged by a refrigeration
unit
    6.
    发明授权
    Method of detecting short cycling of air discharged by a refrigeration unit 失效
    检测由制冷单元排出的空气循环短路的方法

    公开(公告)号:US5284024A

    公开(公告)日:1994-02-08

    申请号:US23020

    申请日:1993-02-25

    Abstract: A method of monitoring a refrigeration unit including detecting premature return of air discharged into a conditioned space, and distinguishing this "short cycling" problem from a refrigeration capacity problem. The method includes determining the rates of change of the temperatures DA and RA of the discharge air and return air, respectively, during temperature pull down of the conditioned space, and comparing the rates of change with predetermined constants selected to detect a short cycling of the discharge air. When the rates of change do not fit a normal temperature pull down, the differential .DELTA.D between the temperatures DA and RA of the discharge air and return air is determined and compared with a third constant. Predetermined results of the comparisons of the rates of changes of DA and RA, and the temperature difference .DELTA.D with the first, second and third constants, respectively, are utilized to identify proper air flow in conditioned space, to indicate a problem with air flow in conditioned space, and to indicate that refrigeration capacity should be checked.

    Abstract translation: 一种监测制冷单元的方法,包括检测排放到调节空间中的空气过早返回,并将该“短循环”问题与制冷能力问题区分开。 该方法包括在调节空间的温度下拉期间分别确定排放空气和返回空气的温度DA和RA的变化率,并且将变化率与预定常数进行比较,以检测短路循环 排放空气 当变化率不适合正常温度下拉时,排出空气和回流空气的温度DA和RA之间的差值(ΔD)D被确定并与第三常数进行比较。 利用DA和RA的变化率和第一,第二和第三常数的温差(Delta)D的比较的预定结果来识别在空调空间中的适当空气流量,以表明有问题 空调空气中的空气流动,并指示应检查制冷量。

    Transport refrigeration system with selective receiver tank
pressurization
    8.
    发明授权
    Transport refrigeration system with selective receiver tank pressurization 失效
    运输制冷系统选择性接收罐加压

    公开(公告)号:US4932219A

    公开(公告)日:1990-06-12

    申请号:US427057

    申请日:1989-10-26

    Abstract: A transport refrigeration system having a compressor, condenser, receiver, and evaporator, for controlling the temperature of a served space via hot gas heating and cooling cycles. The receiver is selectively pressurized during a hot gas heating cycle, pressurizing the receiver at low ambient temperatures as sensed by compressor head pressure, and terminating or preventing receiver pressurization above a predetermined head pressure. This is useful for transport refrigeration systems which have a single compartment to condition, and it is even more useful in compartmentalized transport refrigeration systems having two or more compartments to condition.

    Abstract translation: 具有压缩机,冷凝器,接收器和蒸发器的运输制冷系统,用于通过热气体加热和冷却循环来控制所服务空间的温度。 接收器在热气体加热循环期间被选择性地加压,在低压环境温度下对压缩机头部压力进行加压,并且将接收器加压终止或防止高于预定的头部压力。 这对于具有单个隔间条件的运输制冷系统是有用的,并且在具有两个或更多个隔室的隔间运输制冷系统中甚至更有用。

    Method of controlling a transport refrigeration system without
refrigerant modulation
    9.
    发明授权
    Method of controlling a transport refrigeration system without refrigerant modulation 失效
    控制没有制冷剂调节的运输制冷系统的方法

    公开(公告)号:US5634347A

    公开(公告)日:1997-06-03

    申请号:US630289

    申请日:1996-04-10

    CPC classification number: F25D29/003

    Abstract: A method for controlling a transport refrigeration system is provided that advantageously avoids the top-freezing of items stored in a conditioned space without the need for modulating the flow of refrigerant through the heater-evaporator coil that heats and cools the space. The method includes the steps of operating the refrigeration system in a cooling mode at high speed for no more than 300.degree. minutes below the temperature set point of the conditioned space to rapidly cool the space. Next, the system is operated in a low speed heating mode in order to raise the temperature of the conditioned space to no more than about 5.degree. F. above set point in order to avoid top-freezing items in the conditioned space. Thirdly, the refrigeration system is operated in a low speed cooling mode to reattain a temperature set point assigned to the conditioned space. If necessary, these three basic steps of the method may be reiterated in order to stabilize the temperature of the space at set point. The method is particularly applicable to refrigeration systems capable of cooling or heating multiple conditioned spaces.

    Abstract translation: 提供一种用于控制运输制冷系统的方法,其有利地避免了存储在调节空间中的物品的顶部冷冻,而不需要调节通过加热和冷却空间的加热器 - 蒸发器盘管的制冷剂流。 该方法包括以下步骤:在冷却模式下以高速操作制冷系统,在空调空间的温度设定点以下不超过300分钟,以快速冷却空间。 接下来,系统以低速加热模式操作,以将调节空间的温度升高到设定点以上不超过约5°F,以避免在调节空间中的顶部冷冻物品。 第三,制冷系统以低速冷却模式操作以重新分配给调节空间的温度设定点。 如果需要,可以重申该方法的这三个基本步骤,以便在设定点稳定空间的温度。 该方法特别适用于能够冷却或加热多个空调空间的制冷系统。

    Method of converting a time based data logger to a time and random event
based data logger
    10.
    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

    Abstract: 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.

    Abstract translation: 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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