Hanson Jay L. (Bloomington MN) Nixon James E. (Woodbury MN) Herrig Doyle G. (Elko MN) Ladendorf Gerald J. (Bloomington MN)
출원인 / 주소
Thermo King Corporation (Minneapolis MN 02)
인용정보
피인용 횟수 :
12인용 특허 :
0
초록▼
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 tempera
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.
대표청구항▼
A method of operating a refrigeration unit having a compressor driven by a prime mover in a cycle mode which includes a cooling cycle and a null cycle, to control the temperature of a conditioned space relative to a selected set point temperature, comprising the steps of: dividing the set point temp
A method of operating a refrigeration unit having a compressor driven by a prime mover in a cycle mode which includes a cooling cycle and a null cycle, to control the temperature of a conditioned space relative to a selected set point temperature, comprising the steps of: dividing the set point temperature range of the conditioned space into frozen and non-frozen temperature ranges, selecting a value from a predetermined range of values which selects an upper temperature limit value of the null cycle, running the prime mover to provide the cooling cycle, to reduce the temperature of the conditioned space, monitoring the temperature of the conditioned space during the cooling cycle, comparing the temperature of the conditioned space with a predetermined temperature value which is higher than the set point temperature, when the set point temperature is in the frozen temperature range, stopping the prime mover to initiate the null cycle when the comparison step finds the temperature of the conditioned space has a predetermined relationship with the set point temperature, monitoring the temperature of the conditioned space during the null cycle, comparing the temperature of the conditioned space during the null cycle with the selected upper temperature limit of the null cycle, and starting the prime mover when the comparison step finds that the temperature of conditioned space has risen to the selected upper temperature limit of the null cycle.
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이 특허를 인용한 특허 (12)
Senf, Jr., Raymond L.; Stockbridge, Michael; Reason, John R., Closed loop capacity and power management scheme for multi stage transport refrigeration system.
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