公开(公告)号：US20180195781A1

公开(公告)日：2018-07-12

申请号：US15868712

申请日：2018-01-11

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael A. SAUNDERS ,  Rajan RAJENDRAN ,  Scott FRASER

IPC: F25B43/02 ,  F25B5/02

CPC classification number: F25D29/008 ,  F25B1/10 ,  F25B5/02 ,  F25B7/00 ,  F25B40/00 ,  F25B41/04 ,  F25B41/043 ,  F25B43/02 ,  F25B49/02 ,  F25B2400/0401 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/22 ,  F25B2600/2501 ,  F25B2600/2513 ,  F25B2700/197 ,  F25B2700/21152 ,  F25D2400/14 ,  F25D2400/36 ,  F25D2700/10

Abstract: A refrigeration system includes first and second compressors and an oil separator. The oil separator includes an inlet for receiving refrigerant and oil from the first compressor, a refrigerant outlet, and an oil outlet. The oil separator separates the oil from the refrigerant. A portion of the oil separator below a horizontal plane intersecting the refrigerant outlet collects separated oil and has a volume equal to a first compressor oil supply. The first compressor oil supply is greater than or equal to 100% and less than or equal to 250% of a first compressor initial oil charge. The first compressor receives oil from the oil outlet when an amount of oil in the portion is less than or equal to the first compressor oil supply. The second compressor receives oil from the refrigerant outlet when the amount of oil in the portion is greater than the first compressor oil supply.

公开(公告)号：US20230130167A1

公开(公告)日：2023-04-27

申请号：US17507403

申请日：2021-10-21

Applicant: Emerson Climate Technologies, Inc.

Inventor： Andrew M. WELCH ,  William Bradford BOGGESS ,  Rajan RAJENDRAN

IPC: F25B9/00 ,  F25B49/02

Abstract: Climate control systems and methods of operating them are provided that circulate a working fluid including a high glide refrigerant blend having first and second refrigerants with a difference in boiling points ≥about 25° F. at atmospheric pressure. The system includes a gas-liquid separation vessel that generates a vapor stream and a liquid stream. A compressor receives the vapor stream and generates a pressurized vapor stream. A liquid pump receives the liquid stream and generates a pressurized liquid stream. A condenser is disposed downstream of the compressor and liquid pump and receives and cools the pressurized mixed vapor and liquid stream. An evaporator receives and at least partially vaporizes the multiphase working fluid and directs it to the gas-liquid separating vessel. An expansion device between the condenser and the evaporator processes the multiphase working fluid stream. Lastly, a fluid conduit for circulating the working fluid through the components is provided.

公开(公告)号：US20210055045A1

公开(公告)日：2021-02-25

申请号：US17093245

申请日：2020-11-09

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael A. SAUNDERS ,  Rajan RAJENDRAN ,  Kurt J. KNAPKE

IPC: F25D29/00 ,  F25B1/10 ,  F25B7/00 ,  F25B41/04 ,  F25B43/02 ,  F25B49/02 ,  F25B5/02

Abstract: A refrigeration system includes first and second compressors, a condenser, first and second evaporators, and a valve. The first compressor is fluidly connected to first suction and discharge lines. The second compressor is fluidly connected to second suction and discharge lines. The second suction line is fluidly connected to the first discharge line. The condenser receives refrigerant from the second compressor. The first evaporator receives refrigerant from the condenser and discharges refrigerant to the first suction line. The second evaporator receives refrigerant from the condenser and discharges refrigerant to the second suction line. The valve is disposed between the first evaporator and the first suction line. The first suction line receives refrigerant when the valve is in a first position. The second suction line receives refrigerant when the valve is in a second position. The first compressor is bypassed when the valve is in the second position.

公开(公告)号：US20180195794A1

公开(公告)日：2018-07-12

申请号：US15868693

申请日：2018-01-11

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael A. SAUNDERS ,  Rajan RAJENDRAN ,  Kurt KNAPKE ,  John WALLACE ,  Gregory MICKELSON

IPC: F25D29/00 ,  F25B5/02

CPC classification number: F25D29/008 ,  F25B1/10 ,  F25B5/02 ,  F25B7/00 ,  F25B40/00 ,  F25B41/04 ,  F25B41/043 ,  F25B43/02 ,  F25B49/02 ,  F25B2400/0401 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/22 ,  F25B2600/2501 ,  F25B2600/2513 ,  F25B2700/197 ,  F25B2700/21152 ,  F25D2400/14 ,  F25D2400/36 ,  F25D2700/10

Abstract: A refrigeration system includes first and second compressors, a condenser, first and second refrigeration cases, and a system controller. The first and second compressors are fluidly connected to respective first and second suction and discharge lines. The second suction line is fluidly connected to the first discharge line. The condenser receives refrigerant from the second compressor. The first and second refrigeration cases operate within respective first and second temperature ranges, the first range being lower than the second range. The first case includes a first evaporator that receives refrigerant from the condenser and discharges refrigerant to the first suction line. The second case includes a second evaporator that receives refrigerant from the condenser and discharges refrigerant to the second suction line. The system controller identifies when maintenance is necessary based on a first discharge temperature of the refrigerant in the first discharge line.

公开(公告)号：US20180195773A1

公开(公告)日：2018-07-12

申请号：US15868636

申请日：2018-01-11

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael A. SAUNDERS ,  Rajan RAJENDRAN ,  Kurt KNAPKE

IPC: F25B7/00 ,  F25B41/04 ,  F25B49/02

Abstract: A refrigeration system includes first and second compressors, a condenser, first and second evaporators, and a valve. The first compressor is fluidly connected to first suction and discharge lines. The second compressor is fluidly connected to second suction and discharge lines. The second suction line is fluidly connected to the first discharge line. The condenser receives refrigerant from the second compressor. The first evaporator receives refrigerant from the condenser and discharges refrigerant to the first suction line. The second evaporator receives refrigerant from the condenser and discharges refrigerant to the second suction line. The valve is disposed between the first evaporator and the first suction line. The first suction line receives refrigerant when the valve is in a first position. The second suction line receives refrigerant when the valve is in a second position. The first compressor is bypassed when the valve is in the second position.