Method of operating a transport refrigeration unit

    公开(公告)号:US5140826A

    公开(公告)日:1992-08-25

    申请号:US728665

    申请日:1991-07-11

    摘要: A method of operating a transport refrigeration system having a refrigerant compressor driven by an internal combustion engine. Microprocessor based electrical control maintains the temperature of a conditioned space at a desired set point via heating, cooling and null cycles, with the engine being started and stopped, as required. During the engine starting process, a suction line modulation valve, if used, is closed, engine pre-heat time is selected, including using engine temperature to access a look-up table, and current draw is checked during pre-heat. Excessive current terminates pre-heat. Control diagnostics checks the voltage level on both sides of a refrigerant high pressure switch, before initiating engine cranking. Prior to stopping the engine, a control option initiates a heating cycle for a short time when null is being entered from a cooling cycle, to warm the evaporator and prevent premature starting of the engine.

    Method of operating a transport refrigeration unit
    32.
    发明授权
    Method of operating a transport refrigeration unit 失效
    操作运输制冷单元的方法

    公开(公告)号:US5140825A

    公开(公告)日:1992-08-25

    申请号:US728471

    申请日:1991-07-11

    IPC分类号: G01R21/00 G01R31/00

    CPC分类号: G01R31/007 G01R21/007

    摘要: A method of automatically checking components and associated wiring of electrical control associated with a microprocessor controlled transport refrigeration system. The transport refrigeration system has a prime mover which drives a refrigerant compressor and an alternator. The control includes a battery and a current shunt which measures battery current. During the automatic checking procedure, the prime mover is off, to provide a zero alternator output. Upper and lower battery current draw limits are provided for each component to be checked. Each of the components to be checked is energized and de-energized, with the microprocessor individually and successively connecting each component to, and disconnecting it from, the battery. The microprocessor compares the battery current draw of each component, when energized, with the associated battery current draw limits. An alarm is provided when a battery current draw is outside the associated draw limits, with the alarm identifying the associated component.

    摘要翻译: 一种自动检查与微处理器控制的运输制冷系统相关的电气控制的部件和相关接线的方法。 运输制冷系统具有驱动制冷剂压缩机和交流发电机的原动机。 该控制器包括电池和测量电池电流的电流分路。 在自动检查过程中,原动机关闭,以提供零交流发电机输出。 为要检查的每个组件提供上限和下限电池电流消耗限制。 要检查的每个组件通电并断电,微处理器将每个组件单独并连续地连接到电池上并将其与电池断开连接。 微处理器将每个组件的电池电流消耗与通电相关联的电池电流消耗限制进行比较。 当电池电流消耗超出相关的牵引极限时,提供警报,警报识别相关部件。

    Transport refrigeration including methods and apparatus for optmizing
same
    33.
    发明授权
    Transport refrigeration including methods and apparatus for optmizing same 失效
    运输制冷包括优化方法和设备

    公开(公告)号:US4977752A

    公开(公告)日:1990-12-18

    申请号:US458278

    申请日:1989-12-28

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    摘要: A transport refrigeration system having a refrigerant compressor which is selectively operable with either an electric motor or an internal combustion engine. The transport refrigeration system conditions a load space to a selected set point via heating and cooling modes in response to a selected one of either a return air sensor or a discharge air sensor. System control is automatically optimized in response to manual selections of the prime mover and the operative sensor by providing first, second, third and fourth control algorithms. Selection of the return air sensor automatically selects the first and third control algorithms for electric motor and internal combustion engine, respectively, and selection of the discharge air sensor automatically selects the second and fourth control algorithms for the electric motor and internal combustion engine, respectively.

    Refrigeration system having a modulation valve which also performs
function of compressor throttling valve
    34.
    发明授权
    Refrigeration system having a modulation valve which also performs function of compressor throttling valve 失效
    具有也具有压缩机节流阀功能的调制阀的制冷系统

    公开(公告)号:US4977751A

    公开(公告)日:1990-12-18

    申请号:US458206

    申请日:1989-12-28

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    摘要: A refrigeration system having a modulation valve which controls refrigerant flow to a compressor according to a control algorithm. The need for a compressor throttling valve is eliminated by a load control circuit which operates the modulation valve to perform the function of the throttling valve when load reduction is required. An overload condition of a compressor prime mover overrides the control algorithm and selects a predetermined load control position of the modulation valve. A timer ensures that a predetermined recovery time is provided, before switching back to the control algorithm. The timer also selects the load control position of the modulation valve upon start-up. A heating or defrost mode automatically selects the load control position of the modulation valve for the duration of the mode, as does an ambient air temperature sensor when the ambient exceeds a predetermined value.

    Temperature controlling for a transport refrigeration system
    35.
    发明授权
    Temperature controlling for a transport refrigeration system 失效
    运输制冷系统的温度控制

    公开(公告)号:US4903498A

    公开(公告)日:1990-02-27

    申请号:US236878

    申请日:1988-08-26

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    IPC分类号: F25D29/00

    CPC分类号: F25D29/003

    摘要: A ratiometric temperature controller for a transport refrigeration system, and a method of controlling the load temperature of a transport refrigeration system with digital signals provided in response to an analog ratio between the load temperature and a selected set point temperature. A logic array is programmed to provide a plurality of transport refrigeration system control signals in response to predetermined values of the digital signal. The resolution of the control is increased by having the digital signal respond to a temperature range relatively close to set point, which is a much smaller range than the temperature range over which the set point may be selected. The logic array will respond to a forcing signal which, when true, indicates the need for a high speed cooling mode, when the load temperature is above set point and the system is already in a cooling mode.

    摘要翻译: 用于运输制冷系统的比例温度控制器以及响应于负载温度和所选设定点温度之间的模拟比而提供的数字信号来控制运输制冷系统的负载温度的方法。 逻辑阵列被编程为响应于数字信号的预定值来提供多个运输制冷系统控制信号。 通过使数字信号响应相对接近设定点的温度范围来增加控制的分辨率,该温度范围比可以选择设定点的温度范围小得多的范围。 逻辑阵列将响应强制信号,当真实时,表示需要高速冷却模式,当负载温度高于设定点并且系统已经处于冷却模式时。

    Temperature controller for a transport refrigeration system
    36.
    发明授权
    Temperature controller for a transport refrigeration system 失效
    运输制冷系统的温度控制器

    公开(公告)号:US4819441A

    公开(公告)日:1989-04-11

    申请号:US20259

    申请日:1987-02-27

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    摘要: A ratiometric temperature controller for a transport refrigeration system, and a method of controlling the load temperature of a transport refrigeration system with digital signals, without the necessity of utilizing a digital computer. The method, implemented by the ratiometric controller, includes the steps of providing an analog ratio between the load temperature and a selected set point temperature, converting the analog ratio to a digital signal, and providing a logic array which is programmed to provide a plurality of transport refrigeration system control signals in response to predetermined values of the digital signal.

    摘要翻译: 用于运输制冷系统的比例温度控制器,以及用数字信号控制运输制冷系统的负载温度的方法,而不需要利用数字计算机。 由比例控制器实现的方法包括以下步骤:提供负载温度和所选设定点温度之间的模拟比率,将模拟比转换为数字信号,以及提供逻辑阵列,其被编程以提供多个 响应于数字信号的预定值运送制冷系统控制信号。

    Diesel glow plug tip enlargement protection
    37.
    发明授权
    Diesel glow plug tip enlargement protection 失效
    柴油发光塞头放大保护

    公开(公告)号:US4512295A

    公开(公告)日:1985-04-23

    申请号:US450858

    申请日:1982-12-17

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    IPC分类号: F02B3/06 F02P19/02

    CPC分类号: F02P19/027 F02B3/06

    摘要: The tips 14 of any glow plugs 10 which are shorted are protected against enlargement by a separate protective device 28 in each series connection 26 to an individual glow plug opening in a fraction of a second in response to current through the device of a value corresponding to a short of the heating element in the tip.

    摘要翻译: 防止短路的任何电热塞10的尖端14被防止放大,每个串联连接26中的单独的保护装置28响应于电流通过该装置的相当于 在尖端中的加热元件短。

    Method of defrosting an evaporator coil of a transport temperature control unit
    39.
    发明授权
    Method of defrosting an evaporator coil of a transport temperature control unit 有权
    对运送温度控制单元的蒸发器盘管进行除霜的方法

    公开(公告)号:US06609388B1

    公开(公告)日:2003-08-26

    申请号:US10147734

    申请日:2002-05-16

    申请人: Jay L. Hanson

    发明人: Jay L. Hanson

    IPC分类号: F25D2106

    摘要: The invention provides a method of defrosting an evaporator coil of a transport temperature control unit. The transport temperature control unit may be operable to circulate refrigerant through the evaporator coil for cooling a conditioned space within a transportable vehicle and may be operable to maintain an air temperature of the conditioned space within a range of a desired temperature. The method may include sensing the air temperature of the conditioned space, enabling a warm load defrost when the air temperature of the conditioned space is greater than the desired temperature, initiating a first defrost cycle for removing condensate from the evaporator coil and terminating the first defrost cycle. The first defrost cycle has a defrost duration time. The method may also include establishing a defrost interval time dependent on the defrost duration time and initiating a second defrost cycle after the defrost interval time expires.

    摘要翻译: 本发明提供一种对运输温度控制单元的蒸发器盘管进行除霜的方法。 输送温度控制单元可操作以使制冷剂循环通过蒸发器盘管,用于冷却可移动车辆内的调节空间,并且可操作以将调节空间的空气温度保持在期望温度的范围内。 该方法可以包括感测调节空间的空气温度,当调节空间的空气温度大于所需温度时启用温暖的负荷除霜,启动用于从蒸发器盘管去除冷凝物的第一除霜循环并终止第一除霜 周期。 第一次除霜循环具有除霜持续时间。 该方法还可以包括建立取决于除霜持续时间的除霜间隔时间,并且在除霜间隔时间到期之后启动第二除霜循环。