초록 ▼

A process and method for monitoring and selectively controlling the capacity and power demand within a transport unit is disclosed. Specifically, the present invention teaches the combined controls of an electronic suction modulation valve, and electronic expansion valve, and/or an electronic hot ga

A process and method for monitoring and selectively controlling the capacity and power demand within a transport unit is disclosed. Specifically, the present invention teaches the combined controls of an electronic suction modulation valve, and electronic expansion valve, and/or an electronic hot gas valve in communication with a microcontroller and a number of sensors in order to monitor and control power consumption and capacity, preferably without the use or presence of compressor unloaders, mechanical throttling devices, or other mechanical power control devices.

대표청구항 ▼

[ We claim:] [1.]1. A process for improving the capacity of a transport refrigeration system, said process comprising the steps of:i monitoring evaporator outlet pressure and evaporator outlet temperature;ii comparing said evaporator outlet temperature and evaporator outlet pressure readings to a pr

[ We claim:] [1.]1. A process for improving the capacity of a transport refrigeration system, said process comprising the steps of:i monitoring evaporator outlet pressure and evaporator outlet temperature;ii comparing said evaporator outlet temperature and evaporator outlet pressure readings to a predetermined superheat limit stored in a controller memory; andiii selectively operating an electronic expansion valve in response to a evaporator outlet pressure and outlet temperature readings in excess of said predetermined limit.