公开(公告)号：US10480495B2

公开(公告)日：2019-11-19

申请号：US15951919

申请日：2018-04-12

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael R. Munroe

IPC: F25B49/00 ,  F04B11/00 ,  F04B49/02 ,  F04B39/02 ,  F04C29/04 ,  F04D29/58 ,  F04C28/06 ,  F04B49/06 ,  F04B51/00 ,  F04C28/28 ,  F04C18/02

Abstract: A refrigeration system includes compressor and a duct assembly that includes a duct frame and a sensor unit. The duct frame provides a path for evaporating refrigerant from a lubricant sump of the compressor. The sensor unit obtains temperature measurements of the refrigerant and a lubricant within the lubricant sump and heats and evaporates the refrigerant located within the duct frame of the duct assembly. A control module receives temperature measurements from the sensor unit, determines a presence of liquid refrigerant within the lubricant sump of the compressor in response to a determination that an actual temperature change does not correspond with an expected temperature change for the lubricant, and in response to a determination that the actual temperature change corresponds with the expected temperature change for the lubricant, operates the compressor.

公开(公告)号：US20180320672A1

公开(公告)日：2018-11-08

申请号：US15951919

申请日：2018-04-12

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael R. Munroe

IPC: F04B11/00 ,  F04C28/06 ,  F04B49/02 ,  F04B39/02 ,  F04C29/04 ,  F04D29/58

CPC classification number: F04B11/0091 ,  F04B39/023 ,  F04B39/0284 ,  F04B49/02 ,  F04B49/065 ,  F04B51/00 ,  F04B2201/0801 ,  F04B2203/021 ,  F04B2207/03 ,  F04C18/0215 ,  F04C28/06 ,  F04C28/28 ,  F04C29/04 ,  F04C2240/81 ,  F04C2270/19 ,  F04D29/582 ,  F25B2500/26 ,  F25B2500/28 ,  F25B2600/0251 ,  F25B2700/2106 ,  F25B2700/21156

Abstract: Systems and methods are provided and include a compressor for a refrigeration system and a duct assembly that includes a duct frame and a sensor unit. The duct frame provides a path for evaporating refrigerant from a lubricant sump of the compressor. The sensor unit obtains temperature measurements of the refrigerant and a lubricant within the lubricant sump and heats and evaporates the refrigerant located within the duct frame of the duct assembly. A control module receives temperature measurements from the sensor unit, determines a presence of liquid refrigerant within the lubricant sump of the compressor in response to a determination that an actual temperature change does not correspond with an expected temperature change for the lubricant, and in response to a determination that the actual temperature change corresponds with the expected temperature change for the lubricant, operates the compressor.