Cooling system with increased efficiency

摘要

A cooling system is disclosed. The cooling system may have an evaporator, an evaporator fan, a condenser, and at least one compressor. The compressor may be either a single speed or a variable speed compressor. In addition, the system can use a mechanical or electrical pulsed operation refrigerant flow control valve for controlling refrigerant flow to the evaporator.

主权项

1. A cooling system having at least one cooling chamber, comprising:
at least one evaporator; at least one evaporator fan; at least one constant speed compressor; a refrigerant loop including piping for directing refrigerant from at least one compressor to at least one condenser and from the at least one condenser to the at least one evaporator; a mechanical pulsed operation refrigerant flow control valve configured to control the pressure of refrigerant flow to the at least one evaporator so that the pressure in the at least one evaporator remains relatively constant and to reduce pull-down time of the at least one cooling chamber to a target temperature, wherein settings of the mechanical pulsed operation refrigerant flow control valve are adjusted to maximize improvement of the pull-down time; and a control system connected to the at least one compressor and configured to reduce the pull-down time of the at least one cooling chamber by controlling the on and off characteristics of the compressor motor.