Hydraulic systems and components including wireless control technology
AssigneeDanfoss A/S
InventorsQingHui Yuan, Jeffrey Lowinger
Life of this patent
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Abstract
In one aspect, a wireless transceiver is used to wirelessly connect various electrohydraulic components in a hydraulic system. In another aspect, a self-powered wireless hydraulic system includes a harvesting device for converting hydraulic energy into electrical energy. The electrical energy generated by the harvesting device can be used to power one or more electrohydraulic components and wireless transceivers. In another aspect, a self-powered wireless hydraulic system also includes a flow control device powered by the harvesting device for actively controlling the hydraulic flow through the harvesting device.
Claims12
A hydraulic system comprising:
- a harvesting device for converting hydraulic energy into electrical energy;
- an electrohydraulic component powered by the electrical energy from the harvesting device;
- a wireless transceiver connected to the electrohydraulic component and powered by the electrical energy from the harvesting device;
- a flow control device powered by the harvesting device for actively controlling a hydraulic flow through the harvesting device, wherein the flow control device includes a solenoid controlled variable sized orifice;
- and
- a controller that varies a size of the variable sized orifice based on an electrical load required by the harvesting device such that the harvesting device self-compensates to reduce voltage level fluctuations caused by variations in electrical loads.
An electrohydraulic system comprising:
- a harvesting device for converting hydraulic energy into electrical energy, wherein the harvesting device includes a hydraulic motor that drives an electric generator, and wherein the electric generator is a 3-phase brush-less direct current generator;
- a flow control device powered by the harvesting device for actively controlling a hydraulic flow through the harvesting device, wherein the flow control device includes a solenoid controlled variable sized orifice;
- an electrohydraulic component powered by the electrical energy from the harvesting device;
- a wireless transceiver connected to the electrohydraulic component and powered by the electrical energy from the harvesting device;
- and
- a controller that varies a size of the variable sized orifice based on an electrical load required by the harvesting device such that the harvesting device self-compensates to reduce voltage level fluctuations caused by variations in electrical loads.
Dependencies are inferred from the claim text.