Peter P Narreau

US Patent:

20130139535, Jun 6, 2013

Filed:

Dec 4, 2012

Appl. No.:

13/693900

Inventors:

Terry Nares - Syracuse NY, US
Joseph DuMont Sanchez - Norcross GA, US
Peter Paul Narreau - Suwanee GA, US

International Classification:

F04B 49/00
F25B 1/02

US Classification:

622281, 13756511

Abstract:

A variable-capacity compressor that includes a housing having an inlet for receipt of refrigerant and an outlet for return of refrigerant, and a plurality of compressing elements contained in the housing between the inlet and the outlet. The variable capacity compressor includes a valve having an electrical control. The valve is dedicated to fewer than all of the compressing elements. The valve is movable between a first state which communicates refrigerant flow to the compressing elements, and a second state that reduces or stops flow to the compressing elements. In an embodiment of the invention, an unloading controller has an operational modulation mode that includes cycling the valve between on and off states to provide a portion of compressor capacity. The unloading controller is further programmed to provide a minimum delay time between transitions between the first and second states, but no maximum dwell time between transitions.

US Patent:

55820220, Dec 10, 1996

Filed:

May 18, 1995

Appl. No.:

8/443508

Inventors:

Anton D. Heinrichs - Ransomville NY
Peter P. Narreau - Pennellville NY

Assignee:

Carrier Corporation - Syracuse NY

International Classification:

F25B 3100
F25B 700

US Classification:

62175

Abstract:

In a refrigeration system having low and high stage compressors and a subcooler or economizer, economizer gas is selectively supplied to the compressor motors for cooling and to the suction of the high stage to increase capacity. By selectively controlling the delivery of the economizer gas, efficiency of the refrigeration system is increased.

US Patent:

50957120, Mar 17, 1992

Filed:

May 3, 1991

Appl. No.:

7/695353

Inventors:

Peter P. Narreau - Pennellville NY

Assignee:

Carrier Corporation - Syracuse NY

International Classification:

F25B 700
F25B 4100

US Classification:

62113

Abstract:

A refrigeration circuit is provided in which economizer control is provided together with variable capacity control. Constant cooling is achieved by controlling an economizer cycle responsive to the suction pressure of the compressor. Additionally, compressor discharge temperature is controlled by controlling the portion of liquid refrigerant supplied to the interstage line.

US Patent:

54759854, Dec 19, 1995

Filed:

Dec 14, 1993

Appl. No.:

8/167372

Inventors:

Anton D. Heinrichs - Canastota NY
Peter P. Narreau - Pennellville NY

Assignee:

Carrier Corporation - Syracuse NY

International Classification:

F25B 3100

US Classification:

62117

Abstract:

Liquid refrigerant is injected into the motor of a motor-compressor to cool the motor. Refrigerant is also injected to control the discharge temperature of the compressor. The refrigerant for controlling the discharge temperature may be either excess refrigerant for cooling the motor or refrigerant injected into the compressor under the control of a thermal expansion valve.