Autocascade liquid-vapor separator with integral bypass

Abstract

A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a compressor, a condenser, a liquid-vapor separator having a vapor outlet and a liquid outlet, a cascade heat exchanger, an expander, and an evaporator fluidly connected. The system also includes a modulator disposed downstream of the liquid outlet, and a controller. The controller is configured to determine an operation parameter of the system, and to control the modulator to modulate a liquid flow from the liquid outlet based on the determined operation parameter. The expander is disposed downstream of the liquid outlet. The cascade heat exchanger is disposed downstream of the vapor outlet. The modulator is disposed between the liquid outlet and the vapor outlet and upstream of the cascade heat exchanger.

Dependencies are inferred from the claim text.