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公开(公告)号：US4829458A
公开(公告)日：1989-05-09
申请号：US70798
申请日：1987-07-07
Applicant: James Russo , Michael R. Levine , Victor Rigotti , Nicholas Skogler
Inventor： James Russo , Michael R. Levine , Victor Rigotti , Nicholas Skogler
IPC: G05D23/24
CPC classification number: G05D23/24 , Y10T307/766
Abstract: The present invention is a method for specifying a constant in a digital electronic system. This technique employs the ratio of resistances between a reference resistor and a constant specifying resistor. The time constant of the constant specifying resistor and a capacitor is measured by discharging the capacitor, charging the capacitor through the constant specifying resistor and counting the number of predetermined time intervals required for the voltage across the capacitor to reach a predetermined threshold voltage. A similar time constant measurement is made for the reference resistor and the capacitor. The same conditions are employed as far as possible during these two measurements to insure the only differences are in the value of the resistances. The externally specified constant is computed from the digital ratio of the time constant of the constant specifying resistor and the time constant of the reference resistor. This technique is particularly adapted for use in a microprocessor system having several tristate output lines.
Abstract translation: 本发明是一种在数字电子系统中指定常数的方法。 该技术采用参考电阻和恒定指定电阻之间的电阻比。 恒定指定电阻器和电容器的时间常数是通过放电电容器来测量的，通过常数指定电阻器对电容器充电并对电容器两端的电压所需的预定时间间隔的数量进行计数，以达到预定阈值电压。 对于参考电阻和电容器进行类似的时间常数测量。 在这两次测量期间，尽可能采用相同的条件，以确保电阻值的唯一差异在于。 外部规定的常数是根据常数指定电阻器的时间常数和参考电阻器的时间常数的数字比率来计算的。 该技术特别适用于具有若干三态输出线的微处理器系统。
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公开(公告)号：US4974417A
公开(公告)日：1990-12-04
申请号：US498859
申请日：1990-03-26
Applicant: Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
Inventor： Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
CPC classification number: F25D21/006 , F25B47/025
Abstract: The present invention is a technique for a defrosting operation of a heat pump. External air provides the heat for defrosting the exterior heat exchanger by operating the exterior fan during times when the compressor is not operating, the temperature of the exterior heat exchanger is below freezing and the exterior air temperature is above freezing. In accordance with one embodiment of the present invention the temperature of the exterior heat exchanger and the exterior are measured via separate temperature sensors. In accordance with an alternative embodiment, the exterior heat exchanger temperature is measured via a single temperature sensor and the exterior fan is operated for a predetermined interval of time after the compressor is stopped. Thereafter the exterior fan is operated only so long as the temperature remains at freezing. In a still further embodiment, the exterior fan is operated only so long as it remains less than or equal to freezing and does not reach a plateau at less than freezing. The operation of the exterior fan after deactuation of the compressor may be inhibited throughout an interval of time, if the plateau temperature was less than freezing.
Abstract translation: 本发明是用于热泵的除霜运转的技术。 外部空气通过在压缩机不工作的时候操作外部风扇，外部热交换器的温度低于冰点并且外部空气温度高于冰点，来提供用于除霜外部热交换器的热量。 根据本发明的一个实施例，通过单独的温度传感器来测量外部热交换器和外部的温度。 根据替代实施例，通过单个温度传感器测量外部热交换器温度，并且外部风扇在压缩机停止之后操作预定的时间间隔。 此后，只要温度保持在冻结状态，外部风扇就运行。 在另一个实施例中，外部风扇仅在其保持小于或等于冷冻并且在低于冰点的情况下不达到平台的情况下才被操作。 如果平台温度低于冻结，则可以在一段时间内抑制压缩机停用后的外部风扇的操作。
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3.发明授权
公开(公告)号：US4841458A
公开(公告)日：1989-06-20
申请号：US70727
申请日：1987-07-07
Applicant: Michael R. Levine , Victor Rigotti , James Russo , Nicholas Skogler
Inventor： Michael R. Levine , Victor Rigotti , James Russo , Nicholas Skogler
Abstract: The present invention is a technique for forming a digital signal representing an environmental condition. The technique consists of measuring the variable time constant of an analog sensing device having a variable resistance dependent upon the environmental condition and a capacitor as well as measuring the reference time constant of a precision fixed resistor and the same capacitor. The time constants are measured by discharging the capacitor, charging the capacitor through the appropriate element and measuring the time for the voltage across the capacitor to reach a predetermined level. Lastly, the digital ratio between the two time constants is formed. This digital ratio is the digital representation of the environmental condition sensed by said analog sensing device.
Abstract translation: 本发明是一种形成表示环境条件的数字信号的技术。 该技术包括根据环境条件和电容器测量具有可变电阻的模拟感测装置的可变时间常数以及测量精密固定电阻器和相同电容器的参考时间常数。 通过放电电容器来测量时间常数，通过适当的元件对电容器充电，并测量电容器两端的电压达到预定水平的时间。 最后，形成两个时间常数之间的数字比。 该数字比率是由所述模拟感测装置感测到的环境条件的数字表示。
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公开(公告)号：US4951473A
公开(公告)日：1990-08-28
申请号：US256708
申请日：1988-10-12
Applicant: Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
Inventor： Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
CPC classification number: F25D21/006 , F25B47/025
Abstract: The present invention is a technique for a defrosting opereation of a heat pump. External air provides the heat for defrosting the exterior heat exchanger by operating the exterior fan during times when the compressor is not operating, the temperature of the exterior heat exchanger is below freezing and the exterior air temperature is above freezing. In accordance with one embodiment of the present invention the temperature of the exterior heat exchanger and the exterior are measured via separate temperature sensors. In accordance with an alternative embodiment, the exterior heat exchanger temperature is measured via a single temperature sensor and the exterior fan is operated for a predetermined interval of time after the compressor is stopped. Thereafter the exterior fan is operated only so long as the temperature remains at freezing. In a still further embodiment, the exterior fan is operated only so long as it remains less than or equal to freezing and does not reach a plateau at less than freezing. The operation of the exterior fan after deactuation of the compressor may be inhibited throughout an interval of time, if the plateau temperature was less than freezing.
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Patent Agency Ranking5.发明授权
公开(公告)号：US4741476A
公开(公告)日：1988-05-03
申请号：US70437
申请日：1987-07-07
Applicant: James Russo , Michael R. Levine , Victor Rigotti , Nicholas Skogler
Inventor： James Russo , Michael R. Levine , Victor Rigotti , Nicholas Skogler
CPC classification number: G05D23/24 , G01K7/427 , G05D23/1927
Abstract: The present invention is an electronic thermostat having correction for the self heating due to the semiconductor switching device used to switch a temperature modifying apparatus on. This invention includes a semiconductor power switching device disposed on an upper portion of a vertically oriented circuit board, a first thermistor disposed on the circuit board at a lower portion thereof remote from the semiconductor power switching device, and a second thermistor disposed on the circuit board at a portion intermediate between the semiconductor power switching device and the first thermistor. A corrected ambient temperature is generated from the temperature indicated by the first thermistor and the difference in indicated temperature between the second thermistor and the first thermistor. The state of the semiconductor power switching device is then controlled based upon the relationship between the corrected temperature and a desired temperature.
Abstract translation: 本发明是一种电子恒温器，其具有由于用于切换温度调节装置的半导体开关装置而进行的自身加热校正。 本发明包括设置在垂直取向的电路板的上部的半导体功率开关装置，设置在远离半导体功率开关装置的下部的电路板上的第一热敏电阻和设置在电路板上的第二热敏电阻 在半导体功率开关器件和第一热敏电阻之间的中间部分。 从第一热敏电阻指示的温度和第二热敏电阻与第一热敏电阻之间的指示温度的差产生校正的环境温度。 然后基于校正温度和期望温度之间的关系来控制半导体功率开关器件的状态。
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公开(公告)号：US4974418A
公开(公告)日：1990-12-04
申请号：US499089
申请日：1990-03-26
Applicant: Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
Inventor： Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
CPC classification number: F25B47/025 , F25D21/006
Abstract: The present invention is a technique for a defrosting operation of a heat pump. External air provides the heat for defrosting the exterior heat exchanger by operating the exterior fan during times when the compressor is not operating, the temperature of the exterior heat exchanger is below freezing and the exterior air temperature is above freezing. In accordance with one embodiment of the present invention the temperature of the exterior heat exchanger and the exterior are measured via separate temperature sensors. In accordance with an alternative embodiment, the exterior heat exchanger temperature is measured via a single temperature sensor and the exterior fan is operated for a predetermined interval of time after the compressor is stopped. Thereafter the exterior fan is operated only so long as the temperature remains at freezing. In a still further embodiment, the exterior fan is operated only so long as it remains less than or equal to freezing and does not reach a plateau at less than freezing. The operation of the exterior fan after deactuation of the compressor may be inhibited throughout an interval of time, if the plateau temperature was less than freezing.
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公开(公告)号：US4916912A
公开(公告)日：1990-04-17
申请号：US256916
申请日：1988-10-12
Applicant: Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
Inventor： Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
CPC classification number: F25B47/025 , F25D21/006 , F25D21/02
Abstract: The present invention is an adaptive method and apparatus for detecting the formation of frost in a heat pump. The compressor cycle is interrupted and a defrosting operation is begun if the difference between the exterior ambient temperature and exterior heat exchanger temperature exceeds a difference function of the exterior ambient temperature. The length this defrosting cycle is measured and the difference function is altered if the measured length deviates from a predetermined length of time. The frost formation difference function is initially set as a linear approximation. Thereafter the difference function value at the particular exterior ambient temperature is increased if the length the defrosting is greater than an upper limit value of six minutes and decreased if the length the defrosting is less than a lower limit value of four minutes. In the preferred embodiment, the exterior heat exchanger temperature is measured by a sensor and the exterior ambient temperature is determined once each compressor cycle from this measured temperature.
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公开(公告)号：US4910966A
公开(公告)日：1990-03-27
申请号：US256903
申请日：1988-10-12
Applicant: Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
Inventor： Michael Levine , James Russo , Victor Rigotti , Nicholas Skogler
CPC classification number: G05D23/24 , F25B47/025 , F25D21/006 , F25D21/02
Abstract: The present invention is a method and apparatus for determining the exterior ambient temperature in a heat pump. In accordance with the prior art the heat pump defrosts the exterior heat exchanger if the exterior heat exchanger temperature has a predetermined relationship to the exterior ambient temperature. The exterior heat exchanger temperature is measured directly via a temperature sensor. The improvement of the present invention includes operating the exterior fan after operation of the compressor, while repetitively measuring the temperature of the exterior heat exchanger until reaching a plateau temperature other than freezing. The exterior ambient temperature is set to the plateau temperature. In the event that the plateau temperature equals freezing, the exterior ambient temperature is set equal to a compromise temperature slightly above freezing, preferably 34 degrees Fahrenheit.
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9.发明授权
公开(公告)号：US4864513A
公开(公告)日：1989-09-05
申请号：US70440
申请日：1987-07-07
Applicant: Michael R. Levine , Victor Rigotti , James Russo , Nicholas Skogler
Inventor： Michael R. Levine , Victor Rigotti , James Russo , Nicholas Skogler
Abstract: The present invention is a technique for forming a signal representing the operator adjustment of a potentiometer. This technique consists of measuring the reference time constant of the resistance between the fixed terminals of the potentiometer and a capacitor, measuring the variable time constant of the resistance of potentiometer between a fixed terminal and the terminal variable by an operator setting and this same capacitor, and again measuring the reference time constant of the resistance between the fixed terminals of the potentiometer and the capacitor. These time constant measurements are made by discharging the capacitor, charging the capacitor through the appropriate terminal of the potentiometer and measuring the time required for the voltage across the capacitor to reach a predetermined threshold level. This measurement sequence is repeated if the two measures of the reference time constant differ by more than a predetermined amount. The digital ratio of the variable time constant and the reference time constant is then calculated. This digital ratio is the representation of the operator adjustment of said potentiometer.
Abstract translation: 本发明是一种用于形成表示电位器的操作者调整的信号的技术。 该技术包括测量电位器固定端子与电容器之间的电阻的参考时间常数，通过操作者设置测量固定端子与端子变量之间的电位器电阻的可变时间常数以及相同的电容器， 并再次测量电位计的固定端子与电容器之间的电阻的参考时间常数。 这些时间常数测量是通过放电电容器，通过电位器的适当端子对电容器充电，并测量电容器两端的电压达到预定阈值电平所需的时间。 如果参考时间常数的两个测量值相差大于预定量，则重复该测量序列。 然后计算可变时间常数和参考时间常数的数字比。 该数字比率是所述电位器的操作者调整的表示。
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