The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Mar. 21, 2018
Kobe Steel, Ltd., Hyogo, JP;
Noboru Tsuboi, Hyogo, JP;
Shigeto Adachi, Takasago, JP;
Kobe Steel, Ltd., Hyogo, JP;
Abstract
A thermal energy recovery device () includes a circulation passage () having an evaporator (), an expander (), a condenser (), and pump (), and a controller () controlling the rotational number of the pump (). The expander () is driven upon introduction of a mixed medium of a working medium evaporated in the evaporator () and oil into the expander (). The controller () can execute a thermal load control for controlling the rotational number of the pump () according to a thermal load in the evaporator () and an oil return control for driving the pump () at the rotational number higher than that of the pump () controlled by the thermal load control. The oil return control is executed if a preset oil accumulation condition regarding an accumulation degree of the oil that is separated from the working medium evaporated in the evaporator () is satisfied.