Topic
Gear pump
About: Gear pump is a research topic. Over the lifetime, 7490 publications have been published within this topic receiving 38837 citations. The topic is also known as: Gear pump.
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Patent•
21 Sep 2012
TL;DR: In this paper, a gear unit comprises shafts for connecting to an external mechanical system, at least one gear stage between the shafts, a lubrication pump for circulating lubricating oil through the at least 1 gear stage and bearings of the gear unit, a temperature sensor for measuring temperature of the lubricating oils and supplying a temperature signal, an electrical motor for driving the pump, and an electrical device for controlling the electrical motor so that torque directed to the pump is below a torque limit.
Abstract: A gear unit comprises shafts for connecting to an external mechanical system, at least one gear stage between the shafts, a lubrication pump for circulating lubricating oil through the at least one gear stage and bearings of the gear unit, a temperature sensor for measuring temperature of the lubricating oil and supplying a temperature signal, an electrical motor for driving the lubrication pump, and an electrical device for controlling the electrical motor so that torque directed to the lubrication pump is below a torque limit. The torque limit is determined dynamically on the basis of the measured temperature of the lubricating oil. This arrangement makes it possible to protect the lubrication pump against mechanical faults during a cold start process so that an unnecessarily strict torque limitation, which would slow down the cold start process, can be avoided.
16 citations
Patent•
28 Dec 2004
TL;DR: Magnetically driven gear-pump heads and pumps are disclosed in this article, where an exemplary gearpump head includes a housing, a magnet cup, a pump driving gear, and a pump driven gear.
Abstract: Magnetically driven gear-pump heads and pumps are disclosed. An exemplary gear-pump head includes a housing, a magnet cup, a pump driving gear, and a pump driven gear. The housing has a pump axis and defines a pump cavity. The magnet cup extends along the pump axis and contains a driven magnet that is rotatable inside the magnet cup about the pump axis. The driven magnet comprises a first driving gear. The pump driving gear has a first gear axis, and the pump driven gear has a second gear axis. The first gear axis is parallel to but laterally offset from the pump axis on a first side of the pump axis. The second gear axis is parallel to but laterally offset from the pump axis on a second side of the pump axis. The pump gears are situated in the pump cavity and interdigitate with each other such that rotation of the pump driving gear causes a corresponding contrarotation of the pump driven gear. The pump driving gear includes a second driving gear that interdigitates with the first driving gear such that rotation of the driven magnet causes, via the first and second driving gears, corresponding rotation of the pump driving gear and contrarotation of the pump driven gear to pump liquid through the pump housing.
16 citations
Patent•
27 Jan 1969
TL;DR: In this article, a gear pump is presented to meet low capacity demand of water, and of easy portability, for operating on direct current voltage generated by automobiles and trucks, and is easily fabricated and is of small size and light weight.
Abstract: A pump is provided to meet low-capacity demand of water, and of easy portability, for operating on direct current voltage generated by automobiles and trucks. The pump is a gear pump, is easily fabricated and is of small size and light weight.
16 citations