CN102734139A - 压电泵和压电陶瓷片保护工艺 - Google Patents

压电泵和压电陶瓷片保护工艺 Download PDF

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Publication number
CN102734139A
CN102734139A CN2011100916508A CN201110091650A CN102734139A CN 102734139 A CN102734139 A CN 102734139A CN 2011100916508 A CN2011100916508 A CN 2011100916508A CN 201110091650 A CN201110091650 A CN 201110091650A CN 102734139 A CN102734139 A CN 102734139A
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China
Prior art keywords
piezoelectric
transducing sheet
piezoelectric pump
seal ring
transduction piece
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CN2011100916508A
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English (en)
Inventor
曹孝平
曹伟祥
林淑媛
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Cao Huayan
Shenzhen Hua Yi Pump Technology Co Ltd
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Individual
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Priority to CN2011100916508A priority Critical patent/CN102734139A/zh
Priority to PCT/CN2012/073872 priority patent/WO2012139502A1/zh
Publication of CN102734139A publication Critical patent/CN102734139A/zh
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • F04B43/046—Micropumps with piezoelectric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/003—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2047—Membrane type
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/88—Mounts; Supports; Enclosures; Casings
    • H10N30/883—Additional insulation means preventing electrical, physical or chemical damage, e.g. protective coatings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本发明公开了一种压电泵和压电陶瓷片保护工艺，压电泵由上壳、换能片、阀片、密封圈和下壳等零件构成，其进水口在换能片的中心部位或中心附近，密封圈安装在接近换能片最大圆周处，出水口处于换能片的最大圆周处或接近于最大圆周处；换能片上的导电表面全部涂覆一层薄薄的绝缘保护膜，能有效地防止换能片的漏电故障和陶瓷表面的沾水烧毁，工艺简单，成本低廉。

Description

压电泵和压电陶瓷片保护工艺
技术领域
本发明涉及微型泵，特别是，涉及一种以压电陶瓷片为能量转换装置的压电泵。
背景技术
压电泵专利不少，真正能够产业化的却很少，同时性能指标各方面都不错的更少。压电泵领域还有不少需要突破的难关，如生产工艺复杂、压电陶瓷片粘水易烧毁、压力流量偏低等等。
因此，压电泵领域还有许多可以改进提升的空间。
发明内容
本发明所要解决的技术问题是，提供一种结构工艺简单、流量提升、压电陶瓷片(换能片)安全可靠的压电泵。
本发明的技术方案如下：一种压电泵，由上壳、换能片、阀片、密封圈和下壳组成。组装好前述零件后，上下壳用螺钉连接或超声波焊接成一体。密封圈安装在接近换能片最大外径处，有利于换能片的震动幅度最大化，从而提升泵的输出流量；泵的进水口做在换能片中心处或接近中心处，此处流体压缩比最大，出水口做在换能片最大外经处或接近最大外经处，流体在此处压缩比最小，流体压缩比最大处进、压缩比最小处出，其速度和压力变化是逐渐地，能减少因突然变向等能量损耗，有利于提高泵的能量转化效率。压电陶瓷片(换能片)的陶瓷面通电状态特别不能沾水，沾水就烧黑受损；压电陶瓷片基材为金属导电材料，传统的压电陶瓷片表面不做表面绝缘处理，通电时接触水易造成伤人事故，。为此，我们把压电陶瓷片的裸露导电表面用喷涂、印刷等低温处理工艺方法涂上一层薄薄的均匀的绝缘涂料，简单有效地解决了压电陶瓷片保护和安全问题。
附图说明
图1是本发明中压电泵的实施例；
图2是本发明中压电陶瓷片保护工艺实施例。
具体实施方式
以下结合附图和具体实施例，对本发明进行更详细地说明。
图1是本发明中压电泵的实施例，由上壳(1)、换能片(2)、阀片(3)、密封圈(4)和下壳(5)组成成，组装好前述零件后，上壳(1)和下壳(5)用螺钉连接或超声波焊接成一体构成一个完整的压电泵。密封圈(4)安装在换能片(2)接近最大圆周处或最大圆周处，相当于杠杆的支点往最大圆周处靠，有利于有效利用换能片(2)的最大振幅。
图2是本发明中压电陶瓷片保护工艺实施例，：换能片(2)上的焊点(202)、陶瓷(203)和金属基片(204)表面全部涂覆一层薄薄的绝缘保护膜，该保护膜是用常温表面处理方法、绝缘涂料喷涂或印刷而得，薄而均匀、操作简单、成本低廉。02114467.2专利采取在金属基片(204)表面贴聚酯氟类耐压绝缘薄膜，陶瓷(203)表面灌封1-3毫米绝缘硅橡胶来处理压电陶瓷片的保护和安全问题，首先是贴聚酯氟类耐压绝缘薄膜不能机械化，成本高、产量低；其次是灌封1-3毫米绝缘硅橡胶原材料消耗多、灌封固化时间长，同样是高成本、低产量，该工艺方法难以产业化。

Claims (6)

1.一种压电泵，其特征在于：包括上壳(1)、换能片(2)、阀片(3)、密封圈(4)和下壳(5)，密封圈(4)安装在换能片(2)接近最大圆周处或最大圆周处；
2.一种压电陶瓷片保护工艺，其特征在于：换能片(2)上的焊点(202)、陶瓷(203)和金属基片(204)表面全部涂覆一层薄薄的绝缘保护膜，能有效地防止换能片(2)的漏电故障和陶瓷(203)表面沾水烧毁。
3.根据权利要求1所述的压电泵，其特征在于：进水口(102)处于换能片(2)的圆心位或接近于圆心位；
4.根据权利要求1所述的压电泵，其特征在于：出水口(101)处于换能片(2)的最大圆周处或接近于最大圆周处；
5.根据权利要求2所述的压电陶瓷片保护工艺，其特征在于：绝缘保护膜是厚度低于0.15毫米的均匀的薄膜；
6.根据权利要求2所述的压电陶瓷片保护工艺，其特征在于：绝缘保护膜是用低于100度的作业温度下用喷涂、印刷等工艺方法制作而成的。
CN2011100916508A 2011-04-12 2011-04-12 压电泵和压电陶瓷片保护工艺 Pending CN102734139A (zh)

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CN2011100916508A CN102734139A (zh) 2011-04-12 2011-04-12 压电泵和压电陶瓷片保护工艺
PCT/CN2012/073872 WO2012139502A1 (zh) 2011-04-12 2012-04-12 压电泵和压电陶瓷片保护方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105355775A (zh) * 2015-11-27 2016-02-24 国医华科（苏州）医疗科技发展有限公司 一种压电陶瓷换能器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158454Y (zh) * 1993-03-27 1994-03-09 胡忠民 超微型喷水泵
CN1343842A (zh) * 2001-08-31 2002-04-10 胡军 多用途超微型电子泵
CN1369639A (zh) * 2002-03-14 2002-09-18 胡军 超微型液压式电子泵
CN1369638A (zh) * 2002-03-14 2002-09-18 胡军 一种超微型液压式电子泵及其制作工艺方法
CN2528960Y (zh) * 2001-08-31 2003-01-01 胡军 多用途超微型电子泵
CN2534389Y (zh) * 2002-03-14 2003-02-05 胡军 新型超微型液压式电子泵
US20090127113A1 (en) * 2007-11-15 2009-05-21 Chien-Hsing Chen Microfluidic detector and manufacturing method
CN101463809A (zh) * 2009-01-09 2009-06-24 胡军 直立自吸式压电陶瓷泵
CN101634292A (zh) * 2009-08-10 2010-01-27 胡军 用于电子产品及cpu散热冷却***的压电陶瓷泵
US20110061526A1 (en) * 2007-10-22 2011-03-17 Martin Wackerle Diaphragm Pump

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158454Y (zh) * 1993-03-27 1994-03-09 胡忠民 超微型喷水泵
CN1343842A (zh) * 2001-08-31 2002-04-10 胡军 多用途超微型电子泵
CN2528960Y (zh) * 2001-08-31 2003-01-01 胡军 多用途超微型电子泵
CN1369639A (zh) * 2002-03-14 2002-09-18 胡军 超微型液压式电子泵
CN1369638A (zh) * 2002-03-14 2002-09-18 胡军 一种超微型液压式电子泵及其制作工艺方法
CN2534389Y (zh) * 2002-03-14 2003-02-05 胡军 新型超微型液压式电子泵
US20110061526A1 (en) * 2007-10-22 2011-03-17 Martin Wackerle Diaphragm Pump
US20090127113A1 (en) * 2007-11-15 2009-05-21 Chien-Hsing Chen Microfluidic detector and manufacturing method
CN101463809A (zh) * 2009-01-09 2009-06-24 胡军 直立自吸式压电陶瓷泵
CN101634292A (zh) * 2009-08-10 2010-01-27 胡军 用于电子产品及cpu散热冷却***的压电陶瓷泵

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105355775A (zh) * 2015-11-27 2016-02-24 国医华科（苏州）医疗科技发展有限公司 一种压电陶瓷换能器

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Application publication date: 20121017