Patents by Inventor Wayne G. Schaeffer
Wayne G. Schaeffer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11441824Abstract: A refrigeration system includes a primary refrigeration circuit configured to circulate a CO2 primary refrigerant and a secondary refrigeration circuit separate from the primary refrigeration circuit. The primary refrigeration circuit includes a compressor assembly, a condenser assembly, a receiver, and one or more refrigeration loads having an evaporator assembly. The secondary refrigeration circuit includes a thermal storage unit and a heat exchanger. The thermal storage unit contains a phase change material. The secondary refrigeration circuit is in thermal communication with the primary refrigeration circuit through the heat exchanger. The primary refrigerant includes a critical temperature. The primary refrigeration circuit is configured for subcritical operation. The primary refrigeration circuit and the secondary refrigeration circuit are configured such that the phase change material provides cooling to the primary refrigerant during a first operating condition.Type: GrantFiled: November 10, 2017Date of Patent: September 13, 2022Assignee: Hussmann CorporationInventors: Norman E. Street, Tobey D. Fowler, Neil Monson, Wayne G. Schaeffer
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Publication number: 20200348056Abstract: A refrigeration system includes a primary refrigeration circuit configured to circulate a CO2 primary refrigerant and a secondary refrigeration circuit separate from the primary refrigeration circuit. The primary refrigeration circuit includes a compressor assembly, a condenser assembly, a receiver, and one or more refrigeration loads having an evaporator assembly. The secondary refrigeration circuit includes a thermal storage unit and a heat exchanger. The thermal storage unit contains a phase change material. The secondary refrigeration circuit is in thermal communication with the primary refrigeration circuit through the heat exchanger. The primary refrigerant includes a critical temperature. The primary refrigeration circuit is configured for subcritical operation. The primary refrigeration circuit and the secondary refrigeration circuit are configured such that the phase change material provides cooling to the primary refrigerant during a first operating condition.Type: ApplicationFiled: November 10, 2017Publication date: November 5, 2020Inventors: Norman E. STREET, Tobey D. FOWLER, Neil MONSON, Wayne G. SCHAEFFER
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Patent number: 9677796Abstract: A subassembly of a refrigeration system includes a frame having a plurality of support members and one or more cross members, each cross member extending between two of the support members. A heat exchanger is operable to condense refrigerant. A compressor is supported by the frame and operable to provide refrigerant to the heat exchanger. A portion of the frame is configured to receive and contain refrigerant condensed by the heat exchanger.Type: GrantFiled: March 7, 2014Date of Patent: June 13, 2017Assignee: Hussmann CorporationInventors: Wayne G. Schaeffer, Jeffrey J. Marchand, Carlton Hardie
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Publication number: 20150253048Abstract: A subassembly of a refrigeration system includes a frame having a plurality of support members and one or more cross members, each cross member extending between two of the support members. A heat exchanger is operable to condense refrigerant. A compressor is supported by the frame and operable to provide refrigerant to the heat exchanger. A portion of the frame is configured to receive and contain refrigerant condensed by the heat exchanger.Type: ApplicationFiled: March 7, 2014Publication date: September 10, 2015Applicant: Hussmann CorporationInventors: Wayne G. Schaeffer, Jeffrey J. Marchand, Carlton Hardie
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Patent number: 6272870Abstract: A system for use in regulating the flow of a working fluid, such as a refrigerant, is provided which includes a pressure regulating device. The pressure regulating device controls the mass flow rate of the working fluid in the refrigeration system. The pressure regulating device is controlled based on the saturation characteristics of the working fluid.Type: GrantFiled: October 27, 1999Date of Patent: August 14, 2001Assignee: Emerson Electric Co.Inventor: Wayne G. Schaeffer
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Patent number: 5743102Abstract: A commercial refrigeration network including refrigeration system units constructed and arranged for placement in strategic proximity to corresponding product cooling zones within the shopping arena of a food store, each refrigeration unit having a condensing unit rack configured to accommodate the maximum refrigeration loads of its associated zone with an optimum floor space footprint in the shopping arena, and the condensing unit rack including a plurality of multiplexed compressors, condenser and associated high side and low side refrigerant delivery and suction conduits operatively connected to evaporators for cooling the corresponding zone, and the network also including another cooling source remote from said modular refrigeration units and constructed and arranged for circulating a fluid coolant in heat exchange relationship with the condenser to obtain optimum condensing and efficiency of said evaporators in cooling the corresponding zone.Type: GrantFiled: April 15, 1996Date of Patent: April 28, 1998Assignee: Hussmann CorporationInventors: Charles D. Thomas, Terry J. Broccard, Wayne G. Schaeffer, Doron Shapiro
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Patent number: 5440894Abstract: A commercial refrigeration network including refrigeration system units constructed and arranged for placement in strategic proximity to corresponding product cooling zones within the shopping arena of a food store, each refrigeration unit having a condensing unit rack configured to accommodate the maximum refrigeration loads of its associated zone with an optimum floor space footprint in the shopping arena, and the condensing unit rack including a plurality of multiplexed compressors, condenser and associated high side and low side refrigerant delivery and suction conduits operatively connected to evaporators for cooling the corresponding zone, and the network also including another cooling source remote from said modular refrigeration units and constructed and arranged for circulating a fluid coolant in heat exchange relationship with the condenser to obtain optimum condensing and efficiency of said evaporators in cooling the corresponding zone.Type: GrantFiled: May 5, 1993Date of Patent: August 15, 1995Assignee: Hussmann CorporationInventors: Wayne G. Schaeffer, William C. Wehmeier, Terry J. Broccard, John A. Behr
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Patent number: 4621505Abstract: A flow-through surge receiver for a refrigeration system having compressor, condenser and evaporator means, in which a surge-type receiver forms a reservoir for liquid refrigerant and has a flow-through conduit receiving refrigerant from the condenser means and an outlet for passing such refrigerant directly to the evaporator means in by-pass relation with the receiver reservoir, and a passageway for establishing fluid communication between said conduit and reservoir below the normal liquid refrigerant level in the reservoir.Type: GrantFiled: August 1, 1985Date of Patent: November 11, 1986Assignee: Hussmann CorporationInventors: Roland A. Ares, James M. Cromer, Wayne G. Schaeffer, William C. Wehmeier
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Patent number: 4522037Abstract: A refrigeration system having compressor, condenser, surge receiver and multiple evaporator means, and high side control means including gas defrost means for selectively defrosting the evaporator means with saturated refrigerant gas, a surge control valve for the surge receiver means, and other means for operating the surge control valve in response to differential high side pressures, liquid levels in the receiver means and/or gas defrost operations to regulate refrigerant pressures within the surge receiver means.Type: GrantFiled: December 9, 1982Date of Patent: June 11, 1985Assignee: Hussmann CorporationInventors: Roland A. Ares, Steven J. Burpo, Wayne G. Schaeffer