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Ion wind apparatus with no drifted balanced voltage

A technology of balancing voltage and ion blower, applied in static electricity, electrical components and other directions, can solve the problems of insufficient adjustment amount and environmental deterioration, and achieve the effect of wide adjustment range and stable and accurate ability to control and adjust voltage.

Inactive Publication Date: 2007-12-26
SHENZHEN KAIFA TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an ion fan with no balance voltage offset due to the defects of the above-mentioned electrostatic ion fan in the prior art, such as the positive and negative high voltage balance point deviates from its linear region and the adjustment amount is not enough due to the deterioration of the environment. , to achieve ion fan balance voltage without offset

Method used

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  • Ion wind apparatus with no drifted balanced voltage

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Embodiment Construction

[0013] The invention adopts the processor control technology, through continuous sampling and analysis processing of the ion fan balance voltage signal fed back by the external sensor placed in the monitoring area, predicts its change trend, and adjusts the high-voltage output control circuit in time, so that the balance voltage always changes around the zero point , which solves the above problems well.

[0014] Moreover, the needle frame that emits positive and negative ions is a layered arrangement structure of the inner and outer rings, which can easily set the positive and negative high voltage balance points near the midpoint of its linear area, effectively preventing positive and negative high voltages from environmental deterioration. The balance point deviates from its linear region and the adjustment amount is not enough, which improves the stability of the positive and negative ion balance voltage.

[0015] In order to make the object, technical solution and advanta...

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Abstract

The invention comprises: a fan, a needle rack, a positive high voltage generator, a negative high voltage generator and a balance voltage sensor. It also comprises a MPU control board used for making continuous sampling and analysis for the balanced voltage signals of ion blower fan returned from said balanced voltage sensor, and according to the variation of the balanced voltage signal, adjusting the zeroing voltage on the MPU control board so as to adjust the output of the negative high voltage generator.

Description

technical field [0001] The invention relates to a DC electrostatic ion blower, more specifically, relates to an ion blower for eliminating static charges existing in the production of electrostatic sensitive electronic components (such as computer hard disk magnetic heads, semiconductor devices, etc.) without offset in the balance voltage. Background technique [0002] With the continuous development of semiconductor, especially hard disk magnetic head manufacturing technology, the requirements for electrostatic discharge (ESD) control in the production environment of magnetic heads and other products are getting higher and higher. For example, the Human Body Model (HBM) control specification has been raised from 15,000V more than 10 years ago to 15V now. As an important equipment for ESD control in the production environment, the electrostatic ion fan is required to continuously improve its performance to meet the ESD control requirements of the product. The working princi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05F3/04H05F3/00
Inventor 朱灿强何彩英吴玉真雷民生余以超姜乔
Owner SHENZHEN KAIFA TECH
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