Carrier Corporation

J Michael Griffin

Alexander Lifson

Parmesh Verma

Tobias H Sienel

Thomas D Radcliff

Russell George Lewis

Young Kyu Park

Sivakumar Gopalnarayanan

Zuojun Shi

Steven A Lozyniak

William A Rioux

Kenneth E Cresswell

August William Gutheim

Jeff J Neiter

William Paul Kistner

An ejector has: a motive flow inlet; a secondary flow inlet; an outlet; a motive nozzle; a diffuser; and a control needle shiftable between a first position and a second position. The ejector comprises: an inlet body bearing the motive flow inlet and the secondary flow inlet; a diffuser body forming the diffuser and bearing the outlet; a motive nozzle insert forming the motive nozzle in a compartment in the inlet body; and a needle guide insert in the motive nozzle insert.

Ejectors and methods of manufacture

Refrigerant is circulated through a vapor compression system including a compressor, a gas cooler, an expansion device, and an evaporator. Preferably, carbon dioxide is used as the refrigerant. The expansion device is a work recovery device which extracts energy from the expansion process and is coupled with a fluid pumping device that cools the refrigerant flowing through the gas cooler. The fluid pumping device pumps fluid through the gas cooler at a flow rate related to the energy extracted from the expansion process. The system provides a self-controlling mechanism to regulate the pressure in the gas cooler. If the pressure in the gas cooler increases, more energy is extracted from the expansion process, increasing the flowrate of the fluid pumping device, and decreasing the pressure of the refrigerant in the gas cooler. If the pressure in the gas cooler decreases, less energy is extracted from the expansion process, decreasing the flowrate of the fluid pumping device, and increasing the pressure of the refrigerant in the gas cooler.

Supercritical pressure regulation of vapor compression system by use of gas cooler fluid pumping device

The expansion of a high pressure or intermediate pressure refrigerant in an expansion device in a transcritical vapor compression system converts the potential energy into usable kinetic energy. The kinetic energy provides work which is employed to fully or partially drive an expansion motor unit which is coupled to rotating auxiliary machinery. By providing work to the rotating auxiliary machinery, system efficiency is improved. The auxiliary rotating machinery can be an evaporator fan or a gas cooler fan to pull the refrigerant through the evaporator and gas cooler, respectively. Alternatively, the auxiliary rotating machinery can be a water pump or an oil pump.

Expander driven motor for auxiliary machinery

A thermal storage monitoring and control system employed on a container refrigeration unit utilizes a 'thermal flywheel' algorithm in combination with a data processor to control the temperature level within a cargo container to a maximum value. The thermal monitoring and control system operates the refrigeration system in a manner that causes the heat gain by the load during hot afternoons and evenings to be offset by the thermal storage built into the cargo. The monitoring and control system can be configured to operate automatically or manually.

Thermal storage monitoring and control system for cargo container

Growing community of inventors

Fayetteville, NY, United States of America

J Michael Griffin