Vapor compression system

Refrigeration – Automatic control – Refrigeration producer

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C062S513000

Reexamination Certificate

active

06955059

ABSTRACT:
A vapor compression system includes a main vapor compression circuit including a compressor, a condenser, an expansion device and an evaporator serially connected by main refrigerant lines, the compressor having a main discharge port, a suction port and an economizer/bypass port, an economizer circuit connected between the condenser and the economizer/bypass port of the compressor and including an auxiliary expansion device and a heat exchanger serially connected by economizer refrigerant lines, the economizer refrigerant lines and the main refrigerant lines being exposed to each other for heat exchange in the heat exchanger; and a bypass circuit including a bypass line extending from the economizer/bypass port to the suction port, and a bypass valve positioned along the bypass line, the bypass valve being positionable between a closed position wherein the economizer circuit is active and the bypass circuit is inactive, and an open position wherein the economizer circuit is active and the bypass circuit is active. The system and method advantageously allow for the economizer circuit and bypass circuit to be operational at the same time. By using an electronically controlled auxiliary expansion device, four modes of operation are permissible. As a result, life cycle and system costs can be reduced and compressor reliability and system performance can be enhanced. Additionally the control scheme and method extend the system operating envelope, hence preventing nuisance shutdowns, and further improving compressor reliability.

REFERENCES:
patent: 5996364 (1999-12-01), Lifson et al.
patent: 6047556 (2000-04-01), Lifson
patent: 6058729 (2000-05-01), Lifson et al.
patent: 6122924 (2000-09-01), Lifson et al.
patent: 6138467 (2000-10-01), Lifson et al.
patent: 6385981 (2002-05-01), Vaisman
patent: 6571576 (2003-06-01), Lifson et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Vapor compression system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vapor compression system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vapor compression system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3442353

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.