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Device for generating a pulsating fluid jet subjected to pressure

A fluid jet and fluid technology, which is applied in the field of devices for generating pulsed fluid jets, can solve problems such as high cost, and achieve the effect of compact structure and reduced weight

Active Publication Date: 2014-06-11
DUERR ECOCLEAN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

it takes a lot of energy
On the other hand, workpiece machining with corundum and sand leads to undesired residues
Compared with the machining processes described above, cutting machining with cutting tools has the disadvantage, especially in the case of materials with high hardness, that the process is relatively expensive due to the wear of the tool

Method used

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  • Device for generating a pulsating fluid jet subjected to pressure
  • Device for generating a pulsating fluid jet subjected to pressure
  • Device for generating a pulsating fluid jet subjected to pressure

Examples

Experimental program
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Embodiment Construction

[0043] figure 1 The facility 10 in is designed for activating the surface 12 of a cylindrical depression 14 in a workpiece 15 by means of pulsating fluid jets 16, 18 consisting of water.

[0044] To generate fluid jets 16 , 18 , installation 10 has a device 20 with a chamber 22 in which means 24 for generating fluid pressure waves 32 are formed. Device 24 is connected to a controllable frequency generator 31 . The device 24 contains a piezoelectric crystal 28 which acts as an electromechanical transducer and is connected to a sonotrode 30 . If the chamber 22 is filled with water, the sonotrode 30 can be used to generate a pressure wave 32 in the water with a frequency v preferably in the range 10 kHz≦v≦50 kHz.

[0045] To generate pressure waves, a high-frequency alternating voltage from a frequency generator 31 is applied to the piezoelectric crystal 28 . The frequency generator 31 is designed to generate an ultrasonic frequency, preferably an ultrasonic frequency in the r...

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PUM

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Abstract

The invention relates to a device for generating a pulsating fluid jet (16, 18) from fluid subjected to pressure. The device contains a line system (36) having at least one nozzle (38, 40), which has a nozzle orifice (125), from which a fluid jet (16) of fluid subjected to pressure can exit. The device (20) has a chamber (22), in which a pressure wave generation arrangement (24) for generating fluid pressure waves (32) is constructed. The chamber (22) communicates with the line system (36) through an exit opening (34) for the generated fluid pressure waves (32). According to the invention, the device (20) contains an adjusting arrangement (31, 47, 62, 64) for controlling the amplitude AP of the fluid pressure waves (22) in the line system (36) upstream of the at least one nozzle orifice (125). With the adjusting arrangement(31, 47, 62, 64), it is possible to adjust a Helmholtz number He:= L / Lambda formed from the quotient of the path length L for the fluid pressure waves(22) in the line system (36) between the exit opening (34) of the chamber (22) and the at least one nozzle orifice (125) of the at least one nozzle (38, 40), and the wavelength Lambda of the fluid pressure waves (22) formed in the line system (36).

Description

technical field [0001] The invention relates to a device for generating pulsating fluid jets from a pressurized fluid, with a line system comprising at least one nozzle with a nozzle opening, from which the fluid jets are can be gushed out from the nozzle mouth, and the device has a chamber in which a pressure wave generating device for generating a fluid pressure wave is constructed, and the chamber and the pipeline system pass through for the generated fluid pressure wave The discharge opening is connected. Background technique [0002] A device of this type is known from document WO 2006 / 097887 A1. [0003] In order to efficiently process a workpiece with a fluid jet, eg a water jet, very high pressures must generally be generated, which may be 3000 bar or even higher. This requires a lot of energy. On the other hand, workpiece machining with corundum and sand leads to undesired residues. Compared with the machining processes described above, cutting machining with cu...

Claims

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Application Information

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IPC IPC(8): B05B13/06B05B17/06B24C1/08B24C5/00
CPCB26F3/004B24C5/005B24C7/0061B24C1/086B05B17/0607B05B13/0636B05B12/06B08B9/021B08B9/0813B08B9/0936Y10T83/364B05B17/0623B05B13/0672
Inventor 赫尔曼-约瑟夫·戴维埃贡·卡斯克诺伯特·克林克哈默
Owner DUERR ECOCLEAN GMBH
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