Martin E Singletary

US Patent:

6948327, Sep 27, 2005

Filed:

May 18, 2004

Appl. No.:

10/847797

Inventors:

Kevin Bischel - Rockton IL, US
Kenneth Moshier - Roscoe IL, US
Martin Singletary - Beloit WI, US
Timothy Whitney - Beloit WI, US

Assignee:

Carrier Commercial Refrigeration, Inc. - Charlotte NC

International Classification:

F25B041/00

US Classification:

621964, 622386

Abstract:

A refrigeration system both cools and heats frozen dessert mix in at least two hoppers and at least two freezing cylinders. A liquid line solenoid valve at the inlet of each of the hoppers and the freezing cylinders controls the flow of refrigerant from the condenser. A hot gas solenoid valve at the inlet of each of the hoppers and the freezing cylinders controls the flow of hot refrigerant from the compressor. The system further includes a hot gas bypass valve that is opened when only the hoppers are being cooled to provide additional compressor load. An EPR valve proximate to the hopper discharges varies the temperature of the refrigerant exchanging heat with the mix in the hoppers. A CPR valve controls the inlet pressure of the compressor by reducing the amount of hot refrigerant flowing into the compressor suction. A TREV valve injects liquid refrigerant to the compressor suction to control excessive compressor discharge during the cool cycle.

US Patent:

20040079095, Apr 29, 2004

Filed:

Oct 23, 2002

Appl. No.:

10/278418

Inventors:

Kevin Bischel - Rockton IL, US
Kenneth Moshier - Roscoe IL, US
Martin Singletary - Beloit WI, US
Robert Newton - Beloit WI, US
Peter McNamee - Beloit WI, US

International Classification:

F25B041/00
F25B049/00
F25B027/00

US Classification:

062/196400, 062/238600

Abstract:

A hot gas heat treat system is employed to cool mix in a hopper and a freezing cylinder and to heat the mix for pasteurization. A hopper liquid line solenoid valve at the inlet of the hopper and a cylinder liquid line solenoid valve at the inlet of the freezing cylinder each control the flow of refrigerant to the expansion valves which further control the flow of refrigerant that flows around the hopper and the freezing cylinder, respectively. A hopper hot gas solenoid valve at the inlet of the hopper and a cylinder hot gas solenoid valve at the inlet of the freezing cylinder control the flow of refrigerant from the compressor that flows around the hopper and the freezing cylinder. The system further includes a hot gas bypass valve that is opened when only the hopper is being cooled to provide additional load to the compressor. An EPR valve is positioned proximate to the hopper discharge to vary the temperature of the refrigerant exchanging heat with the hopper. A CPR valve is employed to control the inlet pressure of the compressor by reducing the amount of hot refrigerant flowing into the compressor suction. The system further includes a TREV valve to allow for liquid refrigerant injection to the compressor suction to control excessive compressor discharge during the cool cycle.

Address:

6630 W Plymouth Church Rd, Beloit, WI 53511

Phone:

6088792005

VIN:

2GCEK19J471631057

Make:

CHEVROLET

Model:

SILVERADO 1500

Year:

2007