Hydraulic device for degassing and dewatering a hydraulic oil

A hydraulic mechanism and hydraulic oil technology, applied in the direction of liquid degassing, liquid degassing adjustment/control, mechanical equipment, etc., can solve the problems of deteriorating lubrication characteristics, surface corrosion, accelerated aging, etc., and achieve high-efficiency degassing and dehydration with low cost cheap effect

Active Publication Date: 2019-04-16
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Water accelerates the oxidation-induced aging of hydraulic oils, deteriorates the lubricating properties (Schmiereigenschaften), and af

Method used

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  • Hydraulic device for degassing and dewatering a hydraulic oil
  • Hydraulic device for degassing and dewatering a hydraulic oil
  • Hydraulic device for degassing and dewatering a hydraulic oil

Examples

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Embodiment Construction

[0033] according to figure 1 The hydraulic equipment includes a hydraulic working circuit 10 and a hydraulic secondary circuit 11, which forms a mechanism for degassing and dehydrating. Belonging to the working circuit 10 is a hydrostatic main pump 12 in the form of a squeezer, which is adjustable in its displacement and which can be driven by a motor 13 , for example an internal combustion engine or an electric motor. If necessary, one or more hydraulic loads are supplied with hydraulic oil by a squeeze pump (Verdränger pump 12 ) via one or more hydraulic valves. The squeeze pump 12 pumps hydraulic oil from a tank 15 to the hydraulic load, into which hydraulic oil flows from the hydraulic load back.

[0034] hydraulic loads and hydraulic valves in figure 1 is shown in a very simplified manner and are collectively assigned the reference numeral 16 .

[0035] The hydraulic secondary circuit 11 is a separate high-pressure circuit and is used for degassing and dehydrating the ...

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PUM

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Abstract

The invention relates to a hydraulic device for degassing and dewatering a hydraulic oil, comprising a pressure source from which a liquid to be degassed flows via a throttle point. The invention is characterized in that the quantity of liquid flowing via the throttle point and the flow cross-section of the throttle point are matched such that a cavitation or super cavitation zone is formed downstream of the throttle point, and a device is provided by means of which any kind of air can be introduced into the hydraulic oil from the outside.

Description

technical field [0001] The invention relates to a hydraulic unit for degassing and dehydrating hydraulic oil with a pressure source from which the liquid to be degassed flows through a throttling point. Background technique [0002] For various reasons, air contained in hydraulic fluids creates problems in hydraulic equipment. The higher the free or undissolved air fraction, the higher the undesired compressibility of the hydraulic oil itself. If the hydraulic fluid pumped by the pump also contains air bubbles, this leads to poor efficiency and high noise levels. The more free air in the hydraulic fluid, the faster the hydraulic fluid will age. Usually, attempts are made by designing the storage container to be of a large size so that air bubbles arising in the hydraulic system from the hydraulic oil located in the storage container rise and vent, wherein the residence time of the hydraulic pressure medium is correspondingly long. This process can take place relatively sl...

Claims

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Application Information

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IPC IPC(8): F15B21/044F15B21/041F15B1/26
CPCF15B1/26F15B21/044F15B2211/20546F15B2211/20576F15B2211/40507F15B2211/611B01D19/0063B01D19/0094F15B21/041
Inventor K.哈布尔H.梅林M.米勒
Owner ROBERT BOSCH GMBH
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