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    • 2. 发明授权
    • Method of detecting short cycling of air discharged by a refrigeration
unit
    • 检测由制冷单元排出的空气循环短路的方法
    • US5284024A
    • 1994-02-08
    • US23020
    • 1993-02-25
    • Jay L. HansonGerald J. LadendorfDoyle G. Herrig
    • Jay L. HansonGerald J. LadendorfDoyle G. Herrig
    • B60H1/32F24F1/02F25B40/00F25B41/04F25D17/06F25D29/00G05D23/19F25B49/00
    • B60H1/3225F24F1/02F25D17/06F25D29/003G05D23/19F24F11/0012F24F2221/56F25B40/00F25B41/043
    • 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.
    • 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。
    • 4. 发明授权
    • Refrigeration unit and method of operating same
    • 制冷机组及其运行方法
    • US5456088A
    • 1995-10-10
    • US152649
    • 1993-11-12
    • Jay L. HansonJames E. NixonDoyle G. HerrigGerald J. Ladendorf
    • Jay L. HansonJames E. NixonDoyle G. HerrigGerald J. Ladendorf
    • B60H1/32F25B27/00F25B49/02F25D29/00G05D23/19F25B49/00
    • G05D23/1912B60H1/3232F25B27/00F25B49/02F25D29/003
    • A refrigeration unit, and method of operating same, having a compressor driven by a prime mover. The prime mover is selectively operable in either a continuous mode which includes heating and cooling cycles, or in start-stop cycling mode which includes cooling and null cycles, to control the temperature of a conditioned space relative to a predetermined set point temperature. In one embodiment, the cycle mode is operable only when the set point temperature is in a predetermined temperature range, the limits of which are selectable. The prime mover is operated in the continuous mode, notwithstanding the selection of the cycle mode, when the set point temperature is not within the temperature range authorized for cycle operation. In other embodiments, the time duration and the upper temperature limit of the null cycle are both selectable, with an automatic override of the selected upper temperature limit being provided when the conditioned space contains a frozen load and the selected upper temperature limit of the null cycle would allow the temperature of the conditioned space to rise above a predetermined value. In still other embodiments, in which the prime move includes an engine and a battery, the minimum battery voltage which will re-start the engine to terminate a null cycle, and the minimum battery charging current which will enable the engine to be stopped to initiate a null cycle, are both selectable.
    • 制冷单元及其运行方法,具有由原动机驱动的压缩机。 原动机可以选择性地在包括加热和冷却循环的连续模式中操作,或者在包括冷却和零点循环的启动 - 停止循环模式中,以相对于预定设定点温度来控制调节空间的温度。 在一个实施例中,循环模式仅在设定点温度处于预定温度范围时可操作,其限制是可选择的。 尽管选择了循环模式,但当设定点温度不在允许循环运行的温度范围内时,原动机在连续模式下运行。 在其他实施例中,零周期的持续时间和温度上限都是可选择的,当被调节的空间包含冷冻负荷时,提供所选择的上限温度的自动覆盖,并且所选择的空循环的上限温度 将允许调节空间的温度升高到预定值以上。 在其他实施例中,主移动包括发动机和电池,将重新启动发动机以终止空循环的最小电池电压以及使发动机能够停止以启动的最小电池充电电流 一个零周期都可以选择。
    • 6. 发明授权
    • Method of dynamically determining oil change intervals for internal
combustion engines
    • 动态确定内燃机换油间隔的方法
    • US5530647A
    • 1996-06-25
    • US279584
    • 1994-07-25
    • Thomas R. SemJay L. HansonDoyle G. Herrig
    • Thomas R. SemJay L. HansonDoyle G. Herrig
    • F01M11/10G07C5/00
    • F01M11/10G07C5/006F01M2011/14F01M2011/1486F16N2230/02F16N2260/02F16N2260/18
    • A method of dynamically determining engine oil change intervals for an internal combustion engine having selectable high and low operating speeds HS and LS, respectively. The method includes the steps of accumulating operating time THS of the internal combustion engine at speed HS, accumulating operating time TLS of the internal combustion engine at speed LS, calculating a high speed factor HSF as a function of the accumulated engine operating time THS, and calculating a low speed factor LSF as a function of the accumulated engine operating time TLS. The method then sums the high speed and slow speed factors HSF and LSF to provide a sum S which is compared with a predetermined constant K1. A signal indicating the engine oil should be changed is provided when the comparison step finds the sum S has reached the predetermined constant K1. In a preferred embodiment, the method also includes the step of detecting when the engine oil of the internal combustion engine has been changed, and the step of resetting the accumulated high and low speed operating times THS and TLS, respectively, when the detecting step detects that the engine oil has been changed.
    • 一种动态地确定具有可选择的高和低运行速度HS和LS的内燃机的发动机换油间隔的方法。 该方法包括以速度HS累积内燃机的工作时间THS,以速度LS累积内燃机的运行时间TLS,计算作为累积发动机运转时间THS的函数的高速因子HSF的步骤,以及 计算低速因子LSF作为累积发动机运行时间TLS的函数。 该方法然后将高速和慢速因子HSF和LSF相加以提供与预定常数K1进行比较的和S. 当比较步骤求和S达到预定常数K1时,提供指示发动机机油的信号。 在优选实施例中,该方法还包括检测内燃机的发动机油何时已经改变的步骤,以及当检测步骤检测到时分别重置累积的高低速运行时间THS和TLS的步骤 发动机油已经更换。
    • 7. 发明授权
    • Refrigeration unit control with shutdown evaluation and automatic restart
    • 制冷单元控制具有关机评估和自动重启功能
    • US5454229A
    • 1995-10-03
    • US245266
    • 1994-05-18
    • Jay L. HansonDoyle G. HerrigStanley O. HoiumJames M. RoushJames E. Nixon
    • Jay L. HansonDoyle G. HerrigStanley O. HoiumJames M. RoushJames E. Nixon
    • B60H1/32F25B27/00F25B49/00F25D29/00F25B49/02
    • B60H1/3208F25B27/00F25B49/005F25D29/003F25B2500/26
    • 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.
    • 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。
    • 9. 发明授权
    • Method of monitoring a transport refrigeration unit and an associated
conditioned load
    • 监测运输制冷单元和相关的调节负荷的方法
    • US5579648A
    • 1996-12-03
    • US425024
    • 1995-04-19
    • Jay L. HansonDoyle G. Herrig
    • Jay L. HansonDoyle G. Herrig
    • B60H1/32F25D29/00F25B49/02
    • B60H1/3225F25D29/003
    • 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.
    • 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。
    • 10. 发明授权
    • Transport refrigeration unit and method of operating same
    • 运输制冷机组及其运行方法
    • US5557938A
    • 1996-09-24
    • US395014
    • 1995-02-27
    • Jay L. HansonDoyle G. Herrig
    • Jay L. HansonDoyle G. Herrig
    • B60H1/32F02D29/04F25D29/00F25B49/02
    • F02D29/04B60H1/3208F25D29/003
    • 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.
    • 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。