JPH0861295A - Impeller with vibration damping function - Google Patents

Impeller with vibration damping function

Info

Publication number
JPH0861295A
JPH0861295A JP19506494A JP19506494A JPH0861295A JP H0861295 A JPH0861295 A JP H0861295A JP 19506494 A JP19506494 A JP 19506494A JP 19506494 A JP19506494 A JP 19506494A JP H0861295 A JPH0861295 A JP H0861295A
Authority
JP
Japan
Prior art keywords
impeller
converted
vibration
electric
piezoelectric element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19506494A
Other languages
Japanese (ja)
Inventor
Yoichi Kanemitsu
陽一 金光
Shiketsu Kaku
士傑 郭
Masahito Tano
雅人 田納
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Priority to JP19506494A priority Critical patent/JPH0861295A/en
Publication of JPH0861295A publication Critical patent/JPH0861295A/en
Pending legal-status Critical Current

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To prevent the occurrence of breakage through reduction of the vibration level of the main disc of an impeller by mounting a plurality of piezoelectric elements equally dividedely of a periphery on the main plate of an impeller, and connecting an electric resistor to the two plates of a distribution element. CONSTITUTION: The main disc 2 of an impeller 1 has one surface on which a plurality of vanes 3 are formed. A plurality of piezoelectric elements 4 are mounted equally dividedely of a periphery on the outer surface in a radial direction of the other surface positioned facing the vane 3 of the main disc 2. An electric resistor 6 is connected to each of the positive and negative electrodes of each piezoelectric element 4 through a lead wire 5 to form a closed circuit. Thus, vibration energy generated through rotation of the impeller 1 is converted into electric energy by the piezoelectric element 4. Converted electric energy is converted into heat by the electric resistor 6, resulting in remarkable damping of vibration energy and reduction of a vibration level.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、送風機、圧縮機、ポン
プなどに用いられる制振機能付き羽根車に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impeller with a vibration damping function used in blowers, compressors, pumps and the like.

【0002】[0002]

【従来の技術】送風機、圧縮機、ポンプなどの羽根車の
固有振動数は、ロータの回転数または回転数の整数倍と
一致すると共振が起こることがあり、羽根車の振動によ
る破壊の原因となる。
2. Description of the Related Art Resonance may occur when the natural frequency of an impeller such as a blower, a compressor, a pump, etc. matches the number of revolutions of a rotor or an integral multiple of the number of revolutions. Become.

【0003】[0003]

【発明が解決しようとする課題】本発明は、羽根車の主
板の振動レベルを低減し、破損を防止する制振機能付き
羽根車を提供することを目的としている。
SUMMARY OF THE INVENTION It is an object of the present invention to provide an impeller with a vibration damping function that reduces the vibration level of the main plate of the impeller and prevents damage.

【0004】[0004]

【課題を解決するための手段】本発明によれば、羽根車
の主板に、複数の圧電素子を円周等配に貼り付け、該配
電素子の両極板とに電気抵抗を接続している。
According to the present invention, a plurality of piezoelectric elements are attached to a main plate of an impeller in a circumferentially equidistant manner, and an electric resistance is connected to the bipolar plates of the power distribution element.

【0005】[0005]

【作用】上記のように構成された制振機能付き羽根車に
おいては、振動エネルギは圧電素子により電気エネルギ
に変換され、更に、抵抗により熱に変振される。したが
って、振動が減衰されて振動レベルが低減される。
In the impeller having the vibration damping function configured as described above, the vibration energy is converted into electric energy by the piezoelectric element and further converted into heat by the resistance. Therefore, the vibration is damped and the vibration level is reduced.

【0006】[0006]

【実施例】以下図面を参照して本発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0007】図1において、羽根車1の主板2には、一
方の面に複数(図示の例では5個)の羽根3が形成され
ている。また、主板2の羽根3に対向する他の面の半径
方向外方の部分には、複数(図示の例では10個)の圧
電素子4が円周等配に貼着されている。そして、それぞ
れの圧電素子4の正極と負極とには、リード線5により
電気抵抗6が接続され、閉回路が形成されている。な
お、説明の都合上、羽根3と圧電素子4及び電気抵抗6
とは主板2の同じ側に図示されている。
In FIG. 1, a main plate 2 of an impeller 1 has a plurality of (five in the illustrated example) blades 3 formed on one surface thereof. Further, a plurality of (10 in the illustrated example) piezoelectric elements 4 are attached in a circumferentially equidistant manner on a portion radially outward of the other surface of the main plate 2 facing the blade 3. An electric resistance 6 is connected to the positive electrode and the negative electrode of each piezoelectric element 4 by a lead wire 5 to form a closed circuit. For convenience of description, the blade 3, the piezoelectric element 4, and the electric resistance 6 are provided.
Are shown on the same side of the main plate 2.

【0008】次に、作用について説明する。Next, the operation will be described.

【0009】羽根車1の回転による振動エネルギは圧電
素子4により電気エネルギに変換される。そして、変換
された電気エネルギは、更に、電気抵抗6によって熱に
変換され、結果的に振動エネルギが大きく減衰され、振
動レベルが低減される。なお、最も多くの振動エネルギ
を減衰するため、最適な抵抗値を理論計算又は実験で求
めることが可能である。
Vibration energy generated by the rotation of the impeller 1 is converted into electric energy by the piezoelectric element 4. Then, the converted electric energy is further converted into heat by the electric resistance 6, and as a result, the vibration energy is greatly attenuated and the vibration level is reduced. Since most vibration energy is attenuated, the optimum resistance value can be obtained by theoretical calculation or experiment.

【0010】[0010]

【発明の効果】本発明は、以上説明したように構成され
ているので、羽根車の主板の振動レベルを低減して破損
を防止することができる。
Since the present invention is constructed as described above, the vibration level of the main plate of the impeller can be reduced and damage can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す羽根、圧電素子及び電
気抵抗を一面に示した正面図。
FIG. 1 is a front view showing a vane, a piezoelectric element, and an electric resistance, which are one embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1・・・羽根車 2・・・主板 3・・・羽根 4・・・圧電素子 5・・・リード線 6・・・抵抗 1 ... Impeller 2 ... Main plate 3 ... Blade 4 ... Piezoelectric element 5 ... Lead wire 6 ... Resistance

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 羽根車の主板に、複数の圧電素子を円周
等配に貼り付け、該配電素子の両極板とに電気抵抗を接
続したことを特徴とする制振機能付き羽根車。
1. An impeller with a vibration damping function, characterized in that a plurality of piezoelectric elements are attached to a main plate of the impeller in a circumferentially equidistant manner, and an electric resistance is connected to the bipolar plates of the power distribution element.
JP19506494A 1994-08-19 1994-08-19 Impeller with vibration damping function Pending JPH0861295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19506494A JPH0861295A (en) 1994-08-19 1994-08-19 Impeller with vibration damping function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19506494A JPH0861295A (en) 1994-08-19 1994-08-19 Impeller with vibration damping function

Publications (1)

Publication Number Publication Date
JPH0861295A true JPH0861295A (en) 1996-03-08

Family

ID=16334961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19506494A Pending JPH0861295A (en) 1994-08-19 1994-08-19 Impeller with vibration damping function

Country Status (1)

Country Link
JP (1) JPH0861295A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469458B1 (en) * 2002-07-19 2005-02-02 엘지전자 주식회사 Vibration decrease type fan and fan vibration decrease method
EP2458150A1 (en) * 2010-11-24 2012-05-30 Alstom Technology Ltd Method for damping mechanical vibrations occurring during operation in a turbomachine blade, turbomachine blade for carrying out the method and piezoelectric damping element to be installed in such a turbomachine blade
EP2860405A1 (en) 2013-10-14 2015-04-15 Techspace Aero S.A. Piezoelectric damper system for axial turbomachine rotor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469458B1 (en) * 2002-07-19 2005-02-02 엘지전자 주식회사 Vibration decrease type fan and fan vibration decrease method
EP2458150A1 (en) * 2010-11-24 2012-05-30 Alstom Technology Ltd Method for damping mechanical vibrations occurring during operation in a turbomachine blade, turbomachine blade for carrying out the method and piezoelectric damping element to be installed in such a turbomachine blade
CH704127A1 (en) * 2010-11-24 2012-05-31 Alstom Technology Ltd Method for influence in particular steam or suppress of during operation occurring mechanical vibrations in a turbomaschinen shovel turbomaschinen scoop for implementing the process and piezoelectric damping element for installation in such turbomaschinen shovel.
JP2012112383A (en) * 2010-11-24 2012-06-14 Alstom Technology Ltd Method for affecting mechanical vibration occurring during operation in turbo machine blade, turbo machine blade for executing the method, and piezoelectric damping member to be assembled to the turbo machine blade
US8569928B2 (en) 2010-11-24 2013-10-29 Alstom Technology Ltd. Method for influencing, damping, or suppressing mechanical vibrations occurring during operation in a turbomachine blade, a turbomachine blade useful for carrying out the method, and a piezoelectric damping element
EP2860405A1 (en) 2013-10-14 2015-04-15 Techspace Aero S.A. Piezoelectric damper system for axial turbomachine rotor
CN104564798A (en) * 2013-10-14 2015-04-29 航空技术空间股份有限公司 Piezoelectric damper system for an axial turbomachine rotor
US10125794B2 (en) 2013-10-14 2018-11-13 Safran Aero Boosters Sa Piezoelectric damper system for an axial turbomachine rotor
CN104564798B (en) * 2013-10-14 2019-01-15 赛峰航空助推器股份有限公司 Piezo-electric damping system for axial turbine rotor

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