Invention Grant
- Patent Title: System and method of controlling an oil return cycle for a refrigerated container of a vehicle
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Application No.: US15635239Application Date: 2017-06-28
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Publication No.: US10328771B2Publication Date: 2019-06-25
- Inventor: Shawn W. Vehr , Joseph James Rozsnaki
- Applicant: Emerson Climate Technologies, Inc.
- Applicant Address: US OH Sidney
- Assignee: Emerson Climated Technologies, Inc.
- Current Assignee: Emerson Climated Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: B60H1/32
- IPC: B60H1/32 ; B60H1/00

Abstract:
A compressor compresses a refrigerant. A eutectic plate cools a refrigerated space. An evaporator cools the refrigerated space. A mixture of the refrigerant and an oil flows through the evaporator and the eutectic plate. A control module controls the compressor, a first valve that permits or prevents flow of the mixture to the eutectic plate, and a second valve that permits or prevents flow of the mixture to the evaporator. In response to a temperature of the refrigerated space being greater than a predetermined temperature, the control module: increases a speed of the compressor; operates the compressor at the increased speed for a predetermined time period; after the predetermined period: opens the second valve; and closes the first valve, where the control module opens the second valve before closing the first valve, and decreases the speed of the compressor after closing the first valve.
Public/Granted literature
- US20180001742A1 System and Method of Controlling an Oil Return Cycle for a Refrigerated Container of a Vehicle Public/Granted day:2018-01-04
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