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. 20, 2021
Filed:
May. 20, 2020
Danfoss A/s, Nordborg, DK;
DANFOSS A/S, Nordborg, DK;
Abstract
The invention relates to a device for supplying ports to a machine section () of a hydraulic machine arrangement (), the device () comprising a low-pressure inlet port (), a leakage inlet (), a low-pressure chamber () having a low-pressure opening () for establishing fluid communication with the machine section (), a high-pressure outlet port (), and a high-pressure chamber () that is in fluid communication with the high-pressure outlet port (), the high-pressure chamber () having a high-pressure opening () for establishing fluid communication with the machine section (), wherein the low-pressure inlet port () is in fluid communication with the low-pressure chamber (), wherein a leakage path () extends from the high-pressure chamber () through the machine section () to the leakage inlet (), characterized in that the device () further comprises a control valve member () connecting the leakage inlet () to the low-pressure chamber (), wherein the control valve member () transfers to an open state when a pressure in the leakage inlet () with respect to a pressure in the low-pressure chamber () is higher than a predefined control pressure threshold. The device () reduces cavitation in hydraulic machine arrangements ().