101年.10月17日梭正替換頁 1380283 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種超聲發聲器，尤其涉及一種基於熱聲原 理的超聲發聲器。 【先前技術】 [0002] 發聲器一般由訊號輸入裝置和發聲元件組成。通過訊號 輸入裝置輸入訊號到發聲元件，進而發出聲音。熱致發 聲器爲發聲器中的一種，其爲基於熱聲效應的一種發聲 器，請參見文獻 “The Thermophone”，EDWARD C. WENTE，Vol.XIX，No.4，pp333-345&“0nSome101. October 17th Shuttle Replacement Page 1380283 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an ultrasonic sounder, and more particularly to an ultrasonic sound generator based on thermoacoustic principles. [Prior Art] [0002] A sounder is generally composed of a signal input device and a sounding element. The signal is input through the signal input device to the sounding element, and then the sound is emitted. A thermo-acoustic is one of the sounders, which is a sounder based on the thermoacoustic effect, see the document "The Thermophone", EDWARD C. WENTE, Vol. XIX, No. 4, pp333-345 & "0nSome
II
Thermal Effects of Electric Currents” ，Thermal Effects of Electric Currents" ,
William Henry Preece, Proceedings of the Royal Society of London, Vol.30, pp408-411 (1879-1881 )。其揭示一種熱致發聲器，該 熱致發聲器通過向一導體中通入交流電來實現發聲。該 導體須具有較小的熱容，較薄的厚度，且可將其内部産 生的熱量迅速傳導給周圍氣體介質的特點。當交流電通 過導體時，隨交流電電流強度的變化，導體可迅速升降 溫，並和周圍氣體介質迅速發生熱交換，周圍氣體介質 分子運動，氣體介質密度亦隨之發生變化，進而發出聲 波。先前技術中，最有效的導體爲金屬。 [0003] H. D. Arnold和 I. B. Crandal 1 在文獻 “The thermophone as a precision source of sound” ，Phys. Rev_ 10，pp22-38 ( 1917)中介紹了一種簡 單的熱致發聲器，其採用一鉑片作發聲元件，該鉑片的 09810070；^單編號 AG1G1 第 3 頁 / 共 29 頁 1013397544-0 1380283 __ 101年10月17日梭正替換頁 ‘ · · 厚度爲0. 7微米。請參見圖1，該發聲元件102通過一夹具 104固定。所述發聲元件102及夾具104設置在一基體108 表面。一電流引線106與所述發聲元件102電連接，用於 向所述發聲元件102輸入電訊號。由於發聲元件102的發 聲頻率與其單位面積熱容密切相關。單位面積熱容大， 則發聲頻率範圍窄，強度低；單位面積熱容小，則發聲 頻率範圍寬，強度高。欲獲得具有較寬發聲頻率範圍及 較高強度的聲波，則要求發聲元件102的單位面積熱容愈 小愈好。而具有較小熱容的金屬鉑片，受材料本身的限 制，其厚度最小只能達〇. 7微米，而〇. 7微米厚的鉑片的 單位面積熱容爲2x1 0_4焦耳每平方厘米開爾文。受材料 單位面積熱容的限制，採用該鉑片作發聲元件102的發聲 器的發聲頻率最高僅可達4千赫茲。所述發聲器的發聲頻 率範圍較窄，且不能發出超聲波。另外，所述發聲器一 般係在空氣介質中發聲，應用範圍比較窄。 [0004] 先前的超聲發聲器通常包括一超聲波換能器及一訊號輸 入裝置。所述超聲波換能器一般採用壓電陶瓷作爲振動 元件的諧振型換能器，其執行從電訊號到超聲波的轉換 。所述超聲波換能器通常由兩張壓電陶瓷、圓錐體、外 殼及導線等組成，結構較爲複雜。並且，該超聲發聲器 的超聲波發送和接收特性僅在其諧振頻率周圍的較窄頻 帶範圍内良好，其頻率範圍較窄。 [0005] 自九十年代初以來，以奈米碳管（請參見Helical microtubules of graphitic carbon, Nature,William Henry Preece, Proceedings of the Royal Society of London, Vol. 30, pp408-411 (1879-1881). It discloses a pyrogenic sound generator that achieves sound by introducing alternating current into a conductor. The conductor must have a small heat capacity, a thin thickness, and the ability to rapidly transfer heat generated inside it to the surrounding gaseous medium. When the alternating current passes through the conductor, the conductor can rapidly rise and fall with the change of the alternating current intensity, and rapidly exchange heat with the surrounding gas medium, and the surrounding gas medium molecules move, and the density of the gas medium also changes, thereby generating sound waves. In the prior art, the most effective conductor was a metal. [0003] HD Arnold and IB Crandal 1 describe a simple thermoacoustic burner in the literature "The thermophone as a precision source of sound", Phys. Rev_ 10, pp 22-38 (1917), which uses a platinum sheet. Sounding element, the 09810070 of the platinum piece; ^ single number AG1G1 page 3 / 29 pages 1013397544-0 1380283 __ October 17th, the shuttle is replacing the page ' · · The thickness is 0. 7 microns. Referring to Figure 1, the sounding element 102 is secured by a clamp 104. The sounding element 102 and the jig 104 are disposed on a surface of the substrate 108. A current lead 106 is electrically coupled to the sound emitting element 102 for inputting an electrical signal to the sound emitting element 102. Since the sounding frequency of the sounding element 102 is closely related to its heat capacity per unit area. When the heat capacity per unit area is large, the sound frequency range is narrow and the intensity is low; if the heat capacity per unit area is small, the sound frequency range is wide and the intensity is high. In order to obtain sound waves having a wide range of vocal frequencies and higher intensities, it is required that the heat capacity per unit area of the sound emitting element 102 is as small as possible. The metal platinum sheet with smaller heat capacity is limited by the material itself, and the thickness can be as small as 7 μm, while the 7 μm thick platinum sheet has a heat capacity per unit area of 2 x 1 0_4 joules per square centimeter Kelvin. . Due to the heat capacity per unit area of the material, the sound of the sounding element using the platinum sheet as the sounding element 102 can be as high as 4 kHz. The sounder has a narrower range of sound frequencies and cannot emit ultrasonic waves. In addition, the sounder is generally sounded in an air medium, and the application range is relatively narrow. [0004] Previous ultrasonic sounders typically included an ultrasonic transducer and a signal input device. The ultrasonic transducer generally employs a piezoelectric ceramic as a resonance type transducer of a vibration element, which performs conversion from an electric signal to an ultrasonic wave. The ultrasonic transducer is usually composed of two piezoelectric ceramics, a cone, a casing and a wire, and the structure is relatively complicated. Moreover, the ultrasonic transmitting and receiving characteristics of the ultrasonic sounder are only good in a narrow band around the resonance frequency, and the frequency range is narrow. [0005] Since the early 1990s, carbon nanotubes have been used (see Helical microtubules of graphitic carbon, Nature,
Sumio Iijima，vol 354，p56( 1991 ))爲代表的奈米 09810070^^^51 A〇101 第4頁/共29頁 1013397544-0 1380283 101年10月17日修正替换百 材料以其獨特的結構和性質引起了人們極大的關注。近 幾年來，隨著奈米碳管及奈米材料研究的不斷深入，其 廣闊的應用前景不斷顯現出來。例如，由於奈米碳管所 具有的獨特的電磁學、光學、力學、化學等性能，大量 有關其在場發射電子源、傳感器、新型光學材料、軟鐵 磁材料等領域的應用研究不斷被報導。然而，先前技術 中卻尚未發現奈米碳管用於聲學領域，尤其係超聲發聲 領域。 【發明内容】 [0006] 有鑒於此，確有必要提供一種基於奈米碳管、可潑;出超 聲波且具有較寬發聲頻率範圍的超聲發聲器，該超聲發 聲器的結構較簡單且能够在液態介質中發聲。 [0007] —種超聲發聲器，其包括一發聲元件及一訊號輸入裝置 ，其中，所述發聲元件包括一奈米碳管結構，所述奈米 碳管結構與一液態介質接觸，所述訊號輸入裝置輸入訊 號到該奈米碳管結構，使該奈米碳管結構的周圍液態介 質密度發生變化，進而發出超聲波。 [0008] 相較於先前技術，所述超聲發聲器具有以下優點：其一 ，由於所述超聲發聲器中的發聲元件僅包括奈米碳管結Sumio Iijima, vol 354, p56 (1991)) represented by nano 09810070^^^51 A〇101 Page 4 of 29 pages 1013397544-0 1380283 October 17, 2011 Revision of the replacement of 100 materials with its unique structure And the nature has caused great concern. In recent years, with the deepening of research on carbon nanotubes and nanomaterials, its broad application prospects have been continuously revealed. For example, due to the unique electromagnetic, optical, mechanical, and chemical properties of carbon nanotubes, a large number of applications for field emission electron sources, sensors, new optical materials, and soft ferromagnetic materials have been reported. . However, in the prior art, carbon nanotubes have not been found in the field of acoustics, especially in the field of ultrasonic sounding. SUMMARY OF THE INVENTION [0006] In view of the above, it is indeed necessary to provide an ultrasonic sounder based on a carbon nanotube, which can be ejected, and has a wide range of vocal frequencies. The structure of the ultrasonic sounder is relatively simple and can be Sound in the liquid medium. [0007] An ultrasonic sounder comprising a sound emitting component and a signal input device, wherein the sound emitting component comprises a carbon nanotube structure, the carbon nanotube structure is in contact with a liquid medium, the signal The input device inputs a signal to the carbon nanotube structure to change the density of the liquid medium surrounding the carbon nanotube structure, thereby emitting ultrasonic waves. [0008] Compared with the prior art, the ultrasonic sounder has the following advantages: First, since the sounding element in the ultrasonic sounder only includes a carbon nanotube junction
I 構，故該超聲發聲器的結構較爲簡單，有利於降低該超 聲發聲器的成本。其二，該超聲發聲器利用輸入訊號造 成該奈米碳管結構溫度變化，從而使其周圍液態介質的 密度發生變化，進而可發出超聲波。其三，由於所述超 聲發聲器的發聲元件爲奈米碳管結構，該奈米碳管結構 具有較好的發聲效果，故採用該奈米碳管結構作發聲元 09810070^^^^ A〇101 第5頁/共29頁 1013397544-0 1380283 101年10月17日修正替換頁 件的超聲發聲器具有較寬的頻率範圍。 【實施方式】 [0009]以下將結合附圖詳細說明本發明實施例的超聲發聲器。 [0〇1〇]凊參閱圖2，本發明第一實施例提供一種超聲發聲器1〇， 該超聲發聲器10包括一訊號輸入裝置12，一發聲元件14 ’一第一電極142及一第二電極144。所述第一電極142 和第二電極144間隔設置，且與所述訊號輸入裝置丨2電連 接。所述第一電極142和第二電極144可起到支撐所述發 聲元件14的作用。另外，所述第一電極142和第二電極 144通過外接導線149與所述訊號輸入裝置丨2的兩端電連 接，用於將所述訊號輸入裝置12中的訊號輸入到所述發 聲兀件14中《所述超聲發聲器1〇與一液態介質18相接觸 〇 [0011]所述發聲元件14包括一奈米碳管結構：該奈米碳管結構 爲層狀、線狀或其它形狀，且具有較大的比表面積。該 奈米碳管結構包括至少一奈米碳管膜、至少一奈米碳管 線狀結構或其組合。具體地，所述奈米碳管結構可包括 夕個平行且無間隙鋪設或/和重疊鋪設的奈米碳管膜。所 述奈米碳管結構可包括多個平行設置、交又設置或按一 疋方式編織的奈米碳管線狀結構。所述奈米碳管結構也 可包括至少一奈米碳管線狀結構設置在所述至少一奈米 碳官膜表面。所述多個奈米碳管線狀結構可平行設置、 父叉設置或按一定方式編織設置在所述奈米碳管膜表面 所述不米碳官結構的厚度（線狀結構時即爲直徑）爲 〇·5奈米〜1毫米。優選地，該奈米碳管結構的厚度爲0 5 09810070#單编號 A01()1 ^ 6 ¥ / it 9〇 w 1013397544-0 1380283 [0012] [0013] [ϊ〇1年.10月17日核 微米。所述奈米碳管結構的單位面積熱容可小於2><1〇_4 焦耳每平方厘米開爾文。優選地，所述奈米碳管結構的 單位面積熱容小於ΐ 7χ1〇-6焦耳每平方厘米開爾文。所 述奈米碳管結構中的奈米碳管包括單壁奈米碳管、雙壁 奈米碳管及多壁奈米碳管中的一種或多種。所述單壁奈 米碳管的直徑爲0.5奈米~5〇奈米，所述雙壁奈米碳管的 直徑爲1. 0奈米〜50奈米，所述多壁奈米碳管的直徑爲 1· 5奈米〜50奈米。 所述奈米碳管膜包括均勻分布的奈米碳管，奈米碳管之 間通過凡德瓦爾力緊密結合。該奈米碳管膜中的奈米碳 管爲無序或有序排列。所謂無序係指奈米碳管的排列方 向無規則。所謂有序係指奈米碳管的排列方向有規則。 具體地，當奈米碳管結構包括無序排列的奈米碳管時， 奈米碳管相互纏繞或者各向同性排列；當奈米碳管結構 包括有序排列的奈米碳管時，奈米碳管沿一個方向或者 多個方向擇優取向排列.所述奈米碳管膜包括奈米碳管 拉膜、奈米碳管碾壓膜、奈米碳管絮化膜及長奈米碳管 膜中的一種或多種。 所述奈米碳管拉膜的厚度爲0.01〜100微米。該奈米碳管 拉膜通過拉取-奈米碳管陣列直接獲得1奈米碳管拉 膜包括多個擇優取向排列的奈米碳管，且奈米碳管之間 通過凡德瓦爾力首尾相連。請參閱圖3及圖4，具體地， 每一奈米碳官拉膜包括多個連續且定向排列的奈米碳管 片段143。該多個奈来碳管片段143通過凡德瓦爾力首尾 相連。每一奈米碳管片段143包括多個相互平行的奈米碳 第7頁/共29頁 09810070^^^^ Α〇101 1013397544-0 1380283 101年.10月17日修正替換頁 管145，該多個相互平行的奈米碳管145通過凡德瓦爾力 緊密結合。該奈米碳管片段143具有任意的寬度、厚度、 均勻性及形狀。該奈米碳管拉膜中的奈米碳管145沿同一 方向擇優取向排列。可以理解，通過將多個奈米碳管拉 膜平行且無間隙鋪設或/和重疊鋪設，可以製備不同面積 與厚度的奈米碳管結構。當奈米碳管結構包括多個重疊 設置的奈米碳管拉膜時，相鄰的奈米碳管拉膜中的奈米 碳管的排列方向形成一夾角/9，0° β 90°。多層重疊 設置的奈米碳管膜，尤其係多層交又設置的奈米碳管膜 相對單層奈米碳管膜具有更高的強度，故在將所述奈米 碳管結構放入所述液態介質中時，可確保奈米碳管結構 的結構不被破壞或改變。優選地，所述奈米碳管結構中 的奈米碳管膜的層數大於10層。所述奈米碳管拉膜結構 及其製備方法請參見范守善等人於2007年2月9曰申請的 第CN101239712A號中國大陸公開專利申請，“奈米碳管 薄膜結構及其製備方法”（申請人：清華大學，鴻富錦 精密工業（深圳）有限公司）。 [0014] 所述奈米碳管碾壓膜包括均勻分布的奈米碳管。所述奈 米碳管碾壓膜爲各向同性或包括沿同一方向或不同方向 擇優取向排列的奈米碳管。所述奈米碳管碾壓膜中的奈 米碳管相互交疊。所述奈米碳管碾壓膜可通過碾壓一奈 米碳管陣列獲得。該奈米碳管陣列形成在一基底表面， 所製備的奈米碳管碾壓膜中的奈米碳管與該奈米碳管陣 列的基底的表面成一夾角α，其中，α大於等於0度且小 於等於15度（0 a 15°)。優選地，所述奈米碳管碾壓 _〇〇7#單编號删1 第8頁/共29頁 1013397544-0 101年.10月17日修正替換頁 1380283 膜中的奈米碳管平行於奈米碳管碾壓膜的表面。依據碾 壓的方式不同，該奈米碳管碾壓膜中的奈米碳管具有不 同的排列形式。由於奈米碳管碾壓膜中的奈米碳管之間 通過凡德瓦爾力相互吸引，緊密結合，使奈米碳管碾壓 膜爲一自支撐的結構，可無需基底支撐，自支撐存在。 所述奈米碳管碾壓膜及其製備方法請參見范守善等人於 2007年6月1日申請的第200710074027. 5號中國大陸專 利申請“奈米碳管薄膜的製備方法”（申請人：清華大 學，鴻富錦精密工業（深圳）有限公司）。 [0015] 所述奈米碳管絮化膜的長度、寬度和厚度不限，可根據 實際需要選擇。本發明提供的奈米碳管絮化膜的長度爲 卜10厘米，寬度爲卜10厘米，厚度爲1微米~1毫米。所 述奈米碳管絮化膜包括相互纏繞的奈°米碳管，CNT長度大 於10微米。所述奈米碳管之間通過凡德瓦爾力相互吸引 、纏繞，形成網絡狀結構。所述奈米碳管絮化膜各向同 性。所述奈米碳管絮化膜中的奈米碳管爲均勻分布，無 規則排列，形成大量的微孔結構，微孔孔徑爲1奈米〜0. 5 微米。所述奈米碳管絮化膜及其製備方法請參見范守善 等人於2 0 07年4月13日申請的第2007100 74699. 6號中國 大陸專利申請“奈米碳管薄膜的製備方法”（申請人： 清華大學，鴻富錦精密工業（深圳）有限公司）。 [0016] 所述長奈米碳管膜包括多個擇優取向排列的奈米碳管。 所述多個奈米碳管之間相互平行，倂排設置且通過凡德 瓦爾力緊密結合。所述多個奈米碳管具有大致相等的長 度，且其長度可達到厘米量級。奈米碳管的長度可與奈 09810070产單滅號 A〇101 第 9 頁 / 共 29 頁 1013397544-0 1380283 101年10月17日核正替換頁 米碳管膜的長度相等，故至少有一個奈米碳管從奈米碳 管膜的一端延伸至另一端，從而跨越整個奈米碳管膜。 長奈米碳管膜的長度受奈米碳管的長度的限制。所述長 奈米碳管膜及其製備方法請參見范守善等人於20 08年2月 1曰申請的第200810066048. 7號中國大陸專利申請“奈 米碳管薄膜結構及其製備方法”（申請人：清華大學， 鴻富錦精密工業（深圳）有限公司）及2008年5月28曰申 請的第20081 0067529. X號中國大陸專利申請“帶狀奈米 碳管薄膜的製備方法”（申請人：清華大學，鴻富錦精 密工業（深圳）有限公司）。 [0017] 所述奈米碳管線狀結構包括至少一個奈米碳管線。所述 奈米碳管線狀結構的直徑爲0. 5奈米~1毫米。所述奈米碳 管線狀結構包括多個奈米碳管線平行設置組成的一束狀 結構或由多個奈米碳管線相互扭轉組成的一絞線結構。 所述奈米碳管線可爲一非扭轉的奈米碳管線或扭轉的奈 米碳管線。 [0018] 所述非扭轉的奈米碳管線包括多個沿該非扭轉的奈米碳 管線長皮方向排列的奈米碳管。非扭轉的奈米碳管線可 通過將奈米碳管拉膜通過有機溶劑處理得到。具體地， 該奈米碳管拉膜包括多個奈米碳管片段，該多個奈米碳 管片段通過凡德瓦爾力首尾相連，每一奈米碳管片段包 括多個相互平行並通過凡德瓦爾力緊密結合的奈米碳管 。該奈米碳管片段具有任意的長度、厚度、均勻性及形 狀。該非扭轉的奈米碳管線長度不限，直徑爲0. 5奈米 -100微米。具體地，可將有機溶劑浸潤所述奈米碳管拉 1013397544-0 第10頁/共29頁 1380283 I m年ΐο月 膜的整個表面，在揮發性有機溶劑揮發時産生的表面張 力的作用下，奈米碳管拉膜_的相互平行的多個奈米碳 管通過凡德瓦爾力緊密結合，從而使奈米碳管拉膜收縮 爲一非杻轉的奈米碳管線。該有機溶劑爲揮發性有機溶 劑，如乙醇、甲醇、丙酮、二氯乙烷或氣仿，本實施例 中採用乙醇。通過有機溶劑處理的非扭轉奈米碳管線與 未經有機溶劑處理的奈米碳管膜相比，比表面積减小， 黏性降低。 [0019] 所述扭轉的奈米碳管線爲採用一機械力將所述奈米碳管 拉膜兩端沿相反方向扭轉獲得1扭轉的奈米碳管線包 括多個繞該扭轉的奈米碳管線轴向螺旋排觸奈米碳管 。進一步地’可採用-揮發性有機溶劑處理該扭轉的奈 米碳管線。在揮發性有機溶劑揮發時産生。的表面張力的 作用下’處理後的扭轉的奈米碳管線中相鄰的奈米碳管 通過凡德瓦爾力緊密結合，使扭轉的奈米碳管線的比表. 面積减小’密度及強度增大。 [0020] 所述絲碳管線及其製備方法請參見料善等人於MM 年9月16曰申請的’於2〇〇8年8月2〇曰公告的第 W9C號中國大陸公告專利“ _種奈米碳管繩及 其製造方法”（申請人：清華大學，鴻富錦精密工業（ 深圳）有限公司），及於2〇〇5年12月16曰申請的第 CM1982209A號中國大陸公開專利申請“奈米碳管絲及其 製作方法”（1?請人：料大學，鴻富錦精密工業（深 圳）有限公司）》Therefore, the structure of the ultrasonic sounder is relatively simple, which is advantageous for reducing the cost of the ultrasonic sounder. Second, the ultrasonic sound generator uses the input signal to change the temperature of the carbon nanotube structure, thereby changing the density of the surrounding liquid medium, thereby emitting ultrasonic waves. Third, since the sounding element of the ultrasonic sounder is a carbon nanotube structure, the carbon nanotube structure has a good sounding effect, so the carbon nanotube structure is used as the sounding element 09810070^^^^ A〇 101 Page 5 of 29 1013397544-0 1380283 The ultrasonic sounder that corrects the replacement page on October 17, 101 has a wide frequency range. [Embodiment] Hereinafter, an ultrasonic sound generator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. [0〇1〇] Referring to FIG. 2, a first embodiment of the present invention provides an ultrasonic sounder 1A, the ultrasonic sounder 10 includes a signal input device 12, a sounding element 14', a first electrode 142, and a first Two electrodes 144. The first electrode 142 and the second electrode 144 are spaced apart and electrically connected to the signal input device 丨2. The first electrode 142 and the second electrode 144 may function to support the sound emitting element 14. In addition, the first electrode 142 and the second electrode 144 are electrically connected to the two ends of the signal input device 通过2 through an external wire 149 for inputting a signal in the signal input device 12 to the sounding device. 14] The ultrasonic sounder 1 is in contact with a liquid medium 18 [0011] The sounding element 14 comprises a carbon nanotube structure: the carbon nanotube structure is layered, linear or other shape, And has a large specific surface area. The carbon nanotube structure comprises at least one carbon nanotube membrane, at least one carbon nanotube linear structure, or a combination thereof. In particular, the carbon nanotube structure may comprise a carbon nanotube film laid in parallel and without gaps. The carbon nanotube structure may comprise a plurality of nanocarbon line-like structures arranged in parallel, in a set, or in a braided manner. The carbon nanotube structure may also include at least one nanocarbon line structure disposed on the surface of the at least one carbon carbon film. The plurality of nanocarbon line-like structures may be disposed in parallel, the parent fork is disposed, or the thickness of the non-carbon carbon structure disposed on the surface of the carbon nanotube film is woven in a certain manner (the diameter is a linear structure) For 〇·5 nm ~ 1 mm. Preferably, the thickness of the carbon nanotube structure is 0 5 09810070# single number A01 () 1 ^ 6 ¥ / it 9〇w 1013397544-0 1380283 [0012] [0013] [ϊ〇1年.October 17 Japanese nuclear micron. The carbon nanotube structure may have a heat capacity per unit area of less than 2 < 1 〇 4 4 joules per square centimeter Kelvin. Preferably, the carbon nanotube structure has a heat capacity per unit area of less than χ 7χ1〇-6 joules per square centimeter Kelvin. The carbon nanotubes in the carbon nanotube structure include one or more of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube. The diameter of the single-walled carbon nanotube is 0.5 nm to 5 Å, and the diameter of the double-walled carbon nanotube is 1.0 nm to 50 nm, and the multi-walled carbon nanotube The diameter is from 1. 5 nm to 50 nm. The carbon nanotube membrane comprises uniformly distributed carbon nanotubes, and the carbon nanotubes are tightly bonded by van der Waals force. The carbon nanotubes in the carbon nanotube film are disordered or ordered. The so-called disorder means that the arrangement direction of the carbon nanotubes is irregular. The so-called ordering means that the arrangement direction of the carbon nanotubes is regular. Specifically, when the carbon nanotube structure includes a disordered arrangement of carbon nanotubes, the carbon nanotubes are entangled or isotropically aligned; when the carbon nanotube structure includes an ordered arrangement of carbon nanotubes, The carbon nanotubes are arranged in a preferred orientation in one direction or in a plurality of directions. The carbon nanotube membrane comprises a carbon nanotube membrane, a carbon nanotube membrane, a carbon nanotube membrane, and a long carbon nanotube. One or more of the membranes. The carbon nanotube film has a thickness of 0.01 to 100 μm. The carbon nanotube film is directly obtained by drawing a nano carbon tube array, and the carbon nanotube film comprises a plurality of carbon nanotubes arranged in a preferred orientation, and the carbon nanotubes are passed through the van der Waals force. Connected. Referring to Figures 3 and 4, in particular, each nanocarbon tensile film comprises a plurality of continuous and aligned carbon nanotube segments 143. The plurality of carbon nanotube segments 143 are connected end to end by Van der Waals force. Each of the carbon nanotube segments 143 includes a plurality of mutually parallel nanocarbons. Page 7 of 29 pages 09810070^^^^ Α〇101 1013397544-0 1380283 101. October 17th revised replacement page tube 145, A plurality of mutually parallel carbon nanotubes 145 are tightly coupled by van der Waals forces. The carbon nanotube segment 143 has any width, thickness, uniformity, and shape. The carbon nanotubes 145 in the carbon nanotube drawn film are arranged in a preferred orientation in the same direction. It will be appreciated that carbon nanotube structures of different areas and thicknesses can be prepared by laminating a plurality of carbon nanotube films in parallel and without gaps laying and/or overlapping. When the carbon nanotube structure comprises a plurality of stacked carbon nanotube films, the arrangement of the carbon nanotubes in the adjacent carbon nanotube film forms an angle / 9,0 ° β 90 °. The multi-layered stacked carbon nanotube film, especially the multi-layered carbon nanotube film has higher strength than the single-layer carbon nanotube film, so the carbon nanotube structure is placed in the When in a liquid medium, it ensures that the structure of the carbon nanotube structure is not destroyed or altered. Preferably, the number of layers of the carbon nanotube film in the carbon nanotube structure is greater than 10 layers. The structure of the carbon nanotube film and the preparation method thereof can be found in the Chinese Patent Application No. CN101239712A, which is filed on February 9, 2007 by Fan Shoushan et al., "Nano Carbon Tube Film Structure and Preparation Method" (Application) Person: Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.). [0014] The carbon nanotube rolled film includes a uniformly distributed carbon nanotube. The carbon nanotube rolled film is a carbon nanotube that is isotropic or includes a preferred orientation in the same direction or in different directions. The carbon nanotubes in the carbon nanotube rolled film overlap each other. The carbon nanotube rolled film can be obtained by rolling an array of carbon nanotubes. The carbon nanotube array is formed on a surface of the substrate, and the carbon nanotubes in the prepared carbon nanotube rolled film form an angle α with the surface of the substrate of the carbon nanotube array, wherein α is greater than or equal to 0 degrees. And less than or equal to 15 degrees (0 a 15 °). Preferably, the carbon nanotubes are crushed _〇〇7# single number deleted 1 page 8 / 29 pages 1013397544-0 101 years. October 17 revised replacement page 1380283 The carbon nanotubes in the film are parallel The surface of the film is laminated on a carbon nanotube. The carbon nanotubes in the carbon nanotube rolled film have different arrangements depending on the manner of rolling. Because the carbon nanotubes in the carbon nanotube film are attracted to each other through the van der Waals force, the carbon nanotube film is a self-supporting structure, which can be self-supported without substrate support. . For the carbon nanotube film and the preparation method thereof, please refer to the application of the Chinese patent application "Nano Carbon Tube Film Preparation" by Fan Shoushan et al. on June 1, 2007. Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.). [0015] The length, width and thickness of the carbon nanotube film are not limited and can be selected according to actual needs. The carbon nanotube film of the present invention has a length of 10 cm, a width of 10 cm, and a thickness of 1 μm to 1 mm. The carbon nanotube flocculation membrane comprises intertwined carbon nanotubes having a CNT length of more than 10 microns. The carbon nanotubes are attracted to each other and entangled by van der Waals forces to form a network structure. The carbon nanotube film is isotropic. 5微米。 The carbon nanotubes in the carbon nanotubes are uniformly distributed, irregularly arranged, forming a large number of microporous structures, microporous pore size of 1 nm ~ 0. 5 microns. For the carbon nanotube film and the preparation method thereof, please refer to the Chinese Patent Application No. 2007100 74699. Applicant: Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.). [0016] The long carbon nanotube film comprises a plurality of carbon nanotubes arranged in a preferred orientation. The plurality of carbon nanotubes are parallel to each other, arranged in a row and tightly coupled by van der Waals force. The plurality of carbon nanotubes have substantially equal lengths and may be of the order of centimeters in length. The length of the carbon nanotubes can be the same as the length of the carbon nanotube film of the nuclear replacement film on October 17, 2010, which is equivalent to the length of the carbon nanotube film. The carbon nanotube extends from one end of the carbon nanotube membrane to the other end, thereby spanning the entire carbon nanotube membrane. The length of the long carbon nanotube film is limited by the length of the carbon nanotube. The long carbon nanotube film and the preparation method thereof can be found in the application of the Chinese patent application "Nano Carbon Tube Film Structure and Preparation Method" by Fan Shoushan et al., February 20, 2008. Person: Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.) and No. 20081 0067529. X. Chinese Patent Application for the preparation of "banded carbon nanotube film" (applicant) : Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.). [0017] The nanocarbon line-like structure includes at least one nanocarbon line. 5纳米〜1毫米。 The diameter of the nanocarbon line-like structure is 0. 5 nm ~ 1 mm. The nanocarbon pipeline-like structure comprises a bundle structure in which a plurality of nanocarbon pipelines are arranged in parallel or a stranded structure composed of a plurality of nanocarbon pipelines twisted to each other. The nanocarbon line can be a non-twisted nanocarbon line or a twisted carbon line. [0018] The non-twisted nanocarbon pipeline includes a plurality of carbon nanotubes arranged along the long skin direction of the non-twisted nanocarbon pipeline. The non-twisted nanocarbon line can be obtained by treating the carbon nanotube film with an organic solvent. Specifically, the carbon nanotube film comprises a plurality of carbon nanotube segments, the plurality of carbon nanotube segments are connected end to end by Van der Waals force, and each of the carbon nanotube segments comprises a plurality of parallel and pass through each other Deval's tightly integrated carbon nanotubes. The carbon nanotube segments have any length, thickness, uniformity and shape. 5纳米至100微米。 The non-twisted nano carbon line length is not limited, the diameter is 0. 5 nm -100 microns. Specifically, the organic solvent may be impregnated with the carbon nanotubes 1013397544-0, the entire surface of the film, under the surface tension generated by the volatilization of the volatile organic solvent. The plurality of carbon nanotubes parallel to each other are tightly coupled by van der Waals force, thereby shrinking the carbon nanotube film into a non-twisted nano carbon line. The organic solvent is a volatile organic solvent such as ethanol, methanol, acetone, dichloroethane or gas, and ethanol is used in this embodiment. The non-twisted nanocarbon line treated by the organic solvent has a smaller specific surface area and a lower viscosity than the carbon nanotube film which is not treated with the organic solvent. [0019] the twisted nanocarbon pipeline is a mechanical force to twist the two ends of the carbon nanotube film in opposite directions to obtain a twisted nanocarbon pipeline including a plurality of twisted nanocarbon pipelines The axial spiral touches the carbon nanotubes. Further, the twisted carbon nanotubes can be treated with a volatile organic solvent. Produced when volatile organic solvents evaporate. Under the action of surface tension, the adjacent carbon nanotubes in the treated reversed carbon nanotubes are tightly bonded by van der Waals force, making the ratio of the twisted nanocarbon pipelines smaller. The area density is reduced. Increase. [0020] The silk carbon pipeline and the preparation method thereof can be referred to the "W9C China Mainland Announcement Patent" filed by the material of the person who was applied for on September 16th, MM. Nano carbon tube rope and its manufacturing method" (Applicant: Tsinghua University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.), and the CM1982209A China mainland public patent applied for on December 16th, 2005 Application for "Nano Carbon Tube and Its Manufacturing Method" (1? Please: Materials University, Hongfujin Precision Industry (Shenzhen) Co., Ltd.)"
[0021] 0981〇{m#+M 本實施例中， A0101 所述作爲發聲元件14的奈求碳管結構包括 第11頁/共29頁 1013397544-0 1380283 __ 101年.10月17日核正替換頁 16層奈米碳管拉膜。奈米碳管在該奈米碳管結構中沿同 一方向擇優取向排列。所述奈米碳管結構的長度和寬度 爲3厘米，所述奈米碳管結構的厚度爲0. 5微米。 [0022] 所述第一電極142和第二電極144由導電材料形成，其具 體形狀結構不限。具體地，所述第一電極142和第二電極 144可選擇爲層狀、棒狀、塊狀或其它形狀。所述第一電 極142和第二電極144的材料可選擇爲金屬、導電膠、奈 米碳管、銦錫氧化物（IT0)等。本發明實施例中，所述 第一電極142和第二電極144爲棒狀金屬電極。所述發聲 元件14的兩端分別與所述第一電極142和第二電極144電 連接，並通過所述第一電極142和第二電極144固定。由 於所述第一電極142和第二電極144間隔設置，所述發聲 元件14應用於超聲發聲器10時能接入一定的阻值避免短· 路現象産生。由於奈米碳管具有極大的比表面積，在凡 德瓦爾力的作用下，該奈米碳管結構本身有很好的黏附 性，故採用該奈米碳管結構作發聲元件14時，所述第一 電極142和第二電極144與所述發聲元件14之間可以直接 黏附固定，並形成很好的電接觸。 [0023] 另外，所述第一電極142和第二電極144與所述發聲元件 14之間還可以進一步包括一導電黏結層（圖未示）。所述 導電黏結層可設置於所述發聲元件14與電極相接觸的表 面。所述導電黏結層在實現第一電極142和第二電極144 與所述發聲元件14電接觸的同時，還可以使所述第一電 極142和第二電極144與所述發聲元件14更好地固定。本 實施例中，所述導電黏結層爲一層銀膠。 〇98_产單编號A0101 第12頁/共29頁 1013397544-0 1380283 •101年.10月17日核正替換頁 [0024] 可以理解，當所述發聲元件具有自支撐性能時，所述第 一電極142與第二電極144爲可選擇的結構。所述訊號輸 入裝置12可直接通過導線或電極引線等方式與所述發聲 元件14電連接。另外，任何可實現所述訊號輸入裝置12 與所述發聲元件14之間電連接的方式都在本技術方案的 保護範圍之内。 [0025] 所述訊號輸入裝置12輸入給所述發聲元件14的訊號包括 交流電訊號或音頻電訊號等。所述訊號輸入裝置12通過 導線149與所述第一電極142和第二電極144電連接，並 通過所述第一電極142和第二電極144將訊號輸入到發聲 元件14中。所述訊號輸入裝置12輸入的訊號的頻率大於2 萬赫茲（20KHZ)。所述訊號輸入裝置12通過導線149與 所述第一電極142和第二電極144電連接，並通過所述第 一電極142和第二電極144將訊號輸入到發聲元件14中。 [0026] 所述超聲發聲器10的至少一表面與一液態介質18相接觸 。所述液態介質18不限，只需滿足其電阻率大於所述發 聲元件14的電阻率即可。所述液態介質18包括非電解質 溶液、水及有機溶劑等中的一種或多種。其中，所述水 包括純淨水、自來水、淡水及海水，所述有機溶劑包括 曱醇、乙醇及丙酮等。本發明實施例中，所述發聲元件 14浸沒於一液態介質18中，所述液態介質18的電阻率大 於0. 01歐姆·米，優選地，所述液態介質18爲純淨水。純 水的電導率可達到1.5xl07歐姆.米，且其比熱容也較大 ，可以導出奈米碳管結構産生的熱量，從而可對奈米碳 管結構進行散熱。 09810070^^ AQ1Q1 第13頁/共29頁 1013397544-0 101年10月17日修正巷換頁 上述超聲發聲器10在使用時’由於奈米碳管結構由均勻 乃布的奈米碳管組成’且該奈米碳管結構爲層狀或線狀-具有較大的比表面積’故5玄奈米碟管結構具有較小的 軍位面積熱容和較大的散熱表面，在輸入訊號後，奈米 雙管結構可迅速升降溫，産生周期性的溫度變化，並和 周園液態介質18快速進行熱交換，使周圍液態介質18的 密度周期性地發生改變’進而發出聲音。故本發明實施 例中，所述發聲元件14的發聲原理爲“電-熱-聲，，的轉 換。由上述發聲元件14組成的超聲發聲器10可在液體介 質中發聲’具有廣泛的應用範圍。另外，由於奈求碳管 結構具有極小的單位面積無容（小於2χι〇-4焦耳每平方 厘米開爾文），一般液態介質18的單位面積熱容均大於 奈米碳管結構的單位面積熱容，故在超聲發聲器工作 過程中，當奈米碳管結構的溫度大於液態介質18的溫度 •時’熱量便從奈米碳管結構流向液態介質18，所述液體 介質18可及時導出奈米碳管結構產生的熱量，對其進行 快速散熱。 [00281 所述超聲發聲器1〇的發聲頻率大於2萬赫茲。所述超聲發 聲器10具有較好的發聲效果。另外，本發明實施例中的 奈米碳管結構具有較好的韌性和機械強度，所述奈米碳 官結構可方便地製成各種形狀和尺寸的超聲發聲器10， 該超聲發聲器1〇可方便地應用於各種可發超聲的發聲器 10中。 [〇〇29]請參閱圖5，本發明第二實施例提供一種超聲發聲器2〇， 該超聲發聲器20包括一訊號輸入裝置22，一發聲元件24 09810070#單编號A0101 第14頁/共29頁 ' 1013397544-0 1380283 第一電極242及一第二電極244 液體介質28中工作。 101年10月17日梭正替換頁 該超聲發聲器20在 [0030] [0031] [0032] [0033] 本發明第二實施例提供的超聲發聲器2Q與第—實施例的 超聲發聲H1G結構基本相同，其區別在於，本發明第二 實施例中的超聲發聲器2〇進—步包括—支撐結祕。所 述發聲元件24至少部分設置於所述支擇結構26表面。 該支撐結構26的材料不限，可以爲一硬性材料，如金剛 石、破璃、木質材料或石英。另夕卜所述支撐結構26還 可爲一柔性材料，如塑料或樹脂。優選地，該支撐結構 26的材料應具有較好的絕熱性能，從而防止該發聲元件 24産生的熱量過度的被該支撐結構26吸收，無法達到加 熱周圍液態介質進而發聲的目的。 所述支撐結構26主要起支撐作用，其形狀不限，任何具 有確定形狀的物體，均可作爲本實施例中的支撐結構26 。具體地，該支樓結構26可以爲一平面結構或一曲面結 構，並具有一表面。此時，該發聲元件24直接設置並貼 合於該支撐結構26的表面。由於該發聲元件24整體通過 支撐結構26支撐’因此該發聲元件24可以承受強度較高 的訊號輸入，從而具有較高的發聲強度。另外，由於發 聲元件24設置在支樓結構26表面’故在將所述奈米碳管 結構放入所述液態介質中時，所述支撐結構可確保奈米 碳管結構不被破壞或改變。 所述支撐結構26也可爲一立體結構’如一立方體、一圓 錐體或一圓枉體。此時，所述發聲元件24可環繞所述支 09810070#單編號 A01〇l 第15頁/共29頁 1013397544-0 1380283 101年.10月17日修正替換頁 撐結構26設置，形成一環形發聲元件24 »所述發聲元件 24也可部分設置在所述支撐結構26表面，從而在所述發 聲元件24表面至支撐結構26之間形成一攏音空間。所形 成的攏音空間可爲一封閉空簡或一開放空間《所述支撐 結構26可爲一V型、U型結構或一具有狹窄開口的腔體。 當所述支撐結構26爲一具有狹窄開口的腔體時，該發聲 元件24可平舖固定設置於該腔體的開口上，從而形成一 亥姆霍茲共振腔β當所述支撐結構26爲一V型結構時，所 述發聲元件24設置在所述V型結構的兩端，即從V型結構 的一端延伸至另一端，使所述發聲元件24部分懸空設置 ，從而在所述發聲元件24表面至支撐結構26之間形成一 攏音空間。所述第一電極242和第二電極244間隔設置在 所述發聲元件24表面。所述第一電極242和第二電極244 連接導線249後與所述訊號輸入裝置22的兩端電連接。所 述V型支撐結構26可反射所述發聲元件24位於所述支撐結 構26—側的聲波，增強所述超聲發聲器2〇的發聲效果。 _本發明實施例中，所述支標結構26爲-平面結構，所述 發聲元件24貼合設置在該支撐結構26表面。 剛請參閲圖6，本發明第三實施例提供一種超聲發聲器3〇， 該超聲發聲器30包括一訊號輸入裝置32、一發聲元件％ 、一第一電極⑷…第二電極344、—第三電極謂及 一第四電極348 i超聲發聲糊在—㈣介㈣中工作 〇 剛本發明第三實施例中的超聲發聲器⑽與第一實施例中的 超聲發聲器10的結構基本相同，區別在於，本發明第三 09810070#單编號A〇101 第16頁/共29頁 1013397544-0 1380283 丨101^^月17日梭正钥枝 實施例中的超聲發聲器3〇包括四個電極，即第—電極342 、第二電極344、第三電極346和第四電極348。所述第 電極342、第—電極344、第三電極346和第四電極348 均爲棒狀金屬電極，且平行間隔設置於至少兩個平面内 。所述發聲元件34環繞所述第一電極342、第二電極344 、第二電極346和第四電極348設置並與所述第一電極 342、第二電極344、第三電極346和第四電極348分別電 連接，形成一環形發聲元件34。任意兩個相鄰的電極均 分別與所述訊號輪入裝置32的兩端電連接，以使位於相 鄰電極之間的發聲元件34接入輸入訊號。具體地，先將 不相鄰的兩個電極用導線349連接後與所述訊號輸入裝置 32的一端電連接，剩下的兩個電極用導線349連接後與所 述訊號輪入裝置32的另一端電連接。本發明實施例t， 可先將所述第一電極342和第三電極346用導線349連接 後與所述訊號輸入裝置32的一端電連接，再將所述第二 電極344和第四電極348用導線349連接後與所述訊號輸 入裝置32的另一端電連接。上述連接方式可實現相鄰電 極之間的奈米碳管結構的並聯。並聯後的奈米碳管結構 具有較小的電阻，可降低工作電壓。且，上述連接方式 可使所述發聲元件34具有較大的輻射面積，且發聲強度 得到增強，可實現環繞發聲效果。另外，當所述發聲元 件34的面積較大時，所述第三電極346和第四電極348也 可進一步起到支撐所述發聲元件34的作用。 [0037] 可以理解，所述第一電極342、第二電極344、第三電極 346和第四電極348也可與所述發聲元件34設置在同一平 098丽0产單编號A0101 第17頁/共29頁 1013397544-0 1380283 一 101年10月17日核正替換頁 面内。所述設置在同-平面内的各電極的連接方式與上 述電極的連接方式相同或相似。[0021] 0981〇{m#+M In the present embodiment, the carbon tube structure as the sounding element 14 described in A0101 includes the 11th page/total 29 page 1013397544-0 1380283 __ 101 years. October 17th Replace the page with a 16-layer carbon nanotube film. The carbon nanotubes are arranged in a preferred orientation in the same direction in the carbon nanotube structure. 5微米。 The thickness of the carbon nanotube structure is 0. 5 microns. [0022] The first electrode 142 and the second electrode 144 are formed of a conductive material, and the specific shape structure thereof is not limited. Specifically, the first electrode 142 and the second electrode 144 may be selected in the form of a layer, a rod, a block, or the like. The material of the first electrode 142 and the second electrode 144 may be selected from a metal, a conductive paste, a carbon nanotube, an indium tin oxide (IT0), or the like. In the embodiment of the invention, the first electrode 142 and the second electrode 144 are rod-shaped metal electrodes. Both ends of the sound emitting element 14 are electrically connected to the first electrode 142 and the second electrode 144, respectively, and are fixed by the first electrode 142 and the second electrode 144. Since the first electrode 142 and the second electrode 144 are spaced apart, the sound emitting element 14 can be applied to the ultrasonic sounder 10 to access a certain resistance value to avoid short circuit phenomenon. Since the carbon nanotube has a large specific surface area, the carbon nanotube structure itself has good adhesion under the action of the van der Waals force, so when the carbon nanotube structure is used as the sounding element 14, the The first electrode 142 and the second electrode 144 and the sound emitting element 14 can be directly adhered and fixed, and form a good electrical contact. In addition, the first electrode 142 and the second electrode 144 and the sound emitting element 14 may further include a conductive bonding layer (not shown). The conductive bonding layer may be disposed on a surface of the sound emitting element 14 in contact with the electrode. The conductive bonding layer can further improve the first electrode 142 and the second electrode 144 and the sound emitting element 14 while achieving electrical contact between the first electrode 142 and the second electrode 144 and the sound emitting element 14. fixed. In this embodiment, the conductive bonding layer is a layer of silver glue. 〇98_Bill No. A0101 Page 12/29 Page 1013397544-0 1380283 • 101. October 17 Nuclear Replacement Page [0024] It can be understood that when the sounding element has self-supporting properties, the The first electrode 142 and the second electrode 144 are of an alternative configuration. The signal input device 12 can be electrically connected to the sound emitting element 14 directly by wires or electrode leads or the like. In addition, any manner of achieving electrical connection between the signal input device 12 and the sound emitting element 14 is within the scope of the present technical solution. [0025] The signal input to the sound emitting element 14 by the signal input device 12 includes an alternating current signal or an audio signal. The signal input device 12 is electrically connected to the first electrode 142 and the second electrode 144 via a wire 149, and the signal is input to the sound emitting element 14 through the first electrode 142 and the second electrode 144. The signal input by the signal input device 12 has a frequency greater than 20,000 Hz (20 kHz). The signal input device 12 is electrically connected to the first electrode 142 and the second electrode 144 via a wire 149, and the signal is input to the sound emitting element 14 through the first electrode 142 and the second electrode 144. At least one surface of the ultrasonic sounder 10 is in contact with a liquid medium 18. The liquid medium 18 is not limited and only needs to satisfy a resistivity greater than that of the sound emitting element 14. The liquid medium 18 includes one or more of a non-electrolyte solution, water, an organic solvent, and the like. Wherein, the water comprises purified water, tap water, fresh water and sea water, and the organic solvent comprises decyl alcohol, ethanol, acetone and the like. In the embodiment of the present invention, the sounding element 14 is immersed in a liquid medium 18 having a resistivity greater than 0.01 ohm·meter. Preferably, the liquid medium 18 is pure water. The conductivity of pure water can reach 1.5xl07 ohm.m, and its specific heat capacity is also large. The heat generated by the carbon nanotube structure can be derived, so that the carbon nanotube structure can be dissipated. 09810070^^ AQ1Q1 Page 13 of 29 1013397544-0 October 17, 2011 Correction Lane Change Page The above-mentioned ultrasonic sounder 10 is used in the 'because the carbon nanotube structure is composed of uniform carbon nanotubes' and The carbon nanotube structure is layered or linear-having a large specific surface area. Therefore, the 5 Xuan Nai disk structure has a small heat capacity of the military area and a large heat dissipation surface. The double-tube structure can rapidly rise and fall, produce periodic temperature changes, and rapidly exchange heat with the Zhouyuan liquid medium 18 to periodically change the density of the surrounding liquid medium 18 to generate sound. Therefore, in the embodiment of the present invention, the sounding principle of the sound emitting element 14 is "electric-thermal-acoustic, conversion. The ultrasonic sounder 10 composed of the sound-emitting element 14 can sound in a liquid medium" has a wide range of applications. In addition, since the carbon tube structure has a very small volume per unit area (less than 2 χι〇-4 joules per square centimeter Kelvin), the heat capacity per unit area of the liquid medium 18 is generally greater than the heat capacity per unit area of the carbon nanotube structure. Therefore, during the operation of the ultrasonic sounder, when the temperature of the carbon nanotube structure is greater than the temperature of the liquid medium 18, the heat flows from the carbon nanotube structure to the liquid medium 18, and the liquid medium 18 can be promptly exported to the nanometer. The heat generated by the carbon tube structure is rapidly dissipated. [00281] The sounding frequency of the ultrasonic sounder 1〇 is greater than 20,000 Hz. The ultrasonic sounder 10 has a better sounding effect. In addition, in the embodiment of the present invention The carbon nanotube structure has better toughness and mechanical strength, and the nano carbon official structure can be conveniently fabricated into ultrasonic sounders 10 of various shapes and sizes. The device 1 can be conveniently applied to various types of ultrasonic generators 10. [〇〇29] Please refer to FIG. 5, a second embodiment of the present invention provides an ultrasonic sounder 2, which includes a signal Input device 22, a sounding element 24 09810070# single number A0101 page 14 / total 29 pages 1013397544-0 1380283 First electrode 242 and a second electrode 244 work in liquid medium 28. On October 17, 101, Shuttle The ultrasonic sounder 20 is provided in the second embodiment of the present invention. The ultrasonic sounder 2Q provided by the second embodiment of the present invention has substantially the same structure as the ultrasonic sounding H1G of the first embodiment, and the difference is that The ultrasonic sounder 2 in the second embodiment of the invention includes a support structure. The sounding element 24 is at least partially disposed on the surface of the support structure 26. The material of the support structure 26 is not limited and may be one. A rigid material, such as diamond, glass, wood material or quartz. The support structure 26 can also be a flexible material such as plastic or resin. Preferably, the material of the support structure 26 should have good thermal insulation properties. To prevent the hair The heat generated by the element 24 is excessively absorbed by the support structure 26, and the purpose of heating the surrounding liquid medium to sound is not achieved. The support structure 26 mainly serves as a support, and its shape is not limited, and any object having a certain shape can be used as The support structure 26 in this embodiment. Specifically, the branch structure 26 may be a planar structure or a curved structure and has a surface. At this time, the sounding element 24 is directly disposed and attached to the support structure 26 Since the sounding element 24 is entirely supported by the support structure 26, the sounding element 24 can withstand higher intensity signal input, thereby having a higher sounding intensity. In addition, since the sounding element 24 is disposed on the surface of the branch structure 26, the support structure ensures that the carbon nanotube structure is not damaged or altered when the carbon nanotube structure is placed in the liquid medium. The support structure 26 can also be a three-dimensional structure such as a cube, a cone or a dome. At this time, the sound emitting element 24 can be arranged around the branch 09810070# single number A01〇l page 15 / 29 pages 1013397544-0 1380283 101. October 17 modified replacement page support structure 26, forming a ring sound Element 24 » The sounding element 24 can also be partially disposed on the surface of the support structure 26 to form a sound-sounding space between the surface of the sound-emitting element 24 and the support structure 26. The resulting articulated space can be a closed space or an open space. The support structure 26 can be a V-shaped, U-shaped structure or a cavity having a narrow opening. When the support structure 26 is a cavity having a narrow opening, the sounding element 24 can be tiled and fixed on the opening of the cavity to form a Helmholtz resonant cavity β when the support structure 26 is In a V-shaped configuration, the sounding element 24 is disposed at both ends of the V-shaped structure, that is, from one end of the V-shaped structure to the other end, so that the sound-emitting element 24 is partially suspended, thereby the sound-emitting element A sounding space is formed between the surface 24 and the support structure 26. The first electrode 242 and the second electrode 244 are spaced apart from each other on the surface of the sound emitting element 24. The first electrode 242 and the second electrode 244 are electrically connected to both ends of the signal input device 22 after being connected to the wire 249. The V-shaped support structure 26 can reflect the sound waves of the sound-emitting element 24 on the side of the support structure 26, enhancing the sounding effect of the ultrasonic sounder 2〇. In the embodiment of the present invention, the support structure 26 is a planar structure, and the sound emitting element 24 is disposed on the surface of the support structure 26. Referring to FIG. 6 , a third embodiment of the present invention provides an ultrasonic sound generator 3 . The ultrasonic sound generator 30 includes a signal input device 32 , a sound emitting component % , a first electrode ( 4 ) , a second electrode 344 , The third electrode is said to be a fourth electrode 348. The ultrasonic sounding paste is operated in the fourth embodiment. The ultrasonic sounder (10) in the third embodiment of the present invention has substantially the same structure as the ultrasonic sounder 10 in the first embodiment. The difference is that the third 09810070# single number A 〇 101 of the present invention is 16 pages / 29 pages 1013397544-0 1380283 丨 101 ^ ^ 17th, the ultrasonic sounder 3〇 in the embodiment of the shuttle key branch includes four The electrodes, that is, the first electrode 342, the second electrode 344, the third electrode 346, and the fourth electrode 348. The first electrode 342, the first electrode 344, the third electrode 346, and the fourth electrode 348 are all rod-shaped metal electrodes, and are disposed in parallel at least in two planes. The sound emitting element 34 is disposed around the first electrode 342, the second electrode 344, the second electrode 346, and the fourth electrode 348 and is coupled to the first electrode 342, the second electrode 344, the third electrode 346, and the fourth electrode 348 are electrically connected to form an annular sounding element 34, respectively. Any two adjacent electrodes are electrically connected to both ends of the signal wheeling device 32, respectively, so that the sounding element 34 located between the adjacent electrodes is connected to the input signal. Specifically, the two electrodes that are not adjacent are first connected by a wire 349 and then electrically connected to one end of the signal input device 32, and the remaining two electrodes are connected by a wire 349 and the other of the signal wheeling device 32. One end is electrically connected. In the embodiment t of the present invention, the first electrode 342 and the third electrode 346 are connected to each other by a wire 349, and then electrically connected to one end of the signal input device 32, and then the second electrode 344 and the fourth electrode 348 are connected. After being connected by the wire 349, it is electrically connected to the other end of the signal input device 32. The above connection method can realize the parallel connection of the carbon nanotube structures between adjacent electrodes. The parallel carbon nanotube structure has a small resistance to reduce the operating voltage. Moreover, the above-mentioned connection mode allows the sound-emitting element 34 to have a large radiation area, and the sound-emitting intensity is enhanced to achieve a surround sounding effect. In addition, when the area of the sounding element 34 is large, the third electrode 346 and the fourth electrode 348 may further function to support the sound emitting element 34. [0037] It can be understood that the first electrode 342, the second electrode 344, the third electrode 346, and the fourth electrode 348 may also be disposed in the same plane as the sound emitting element 34. The order number is A0101. / Total 29 pages 1013397544-0 1380283 One October 17th, 101 nuclear replacement page. The manner in which the electrodes disposed in the same plane are connected is the same as or similar to the manner in which the electrodes are connected.
[0038J 可以理解’本發明可設置多個電極，其數量不限，只需 保任思兩個相鄰的電極均分別與所述訊號輸入裝置犯 的兩端電連接即可。 [0039] .料超聲發聲器具有以下優點：其―，由於所述超聲發 聲器中的發聲元件僅包括奈米碳管結構，故該超聲發聲 器的結構較爲簡單’有利於降低該超聲發聲器的成本。 ,、超聲發聲器利用輸入訊號造成該奈米碳管結構 溫度變化，從而使其液態介質的密度發生變化，進 而可發出超聲波。其三，由於奈米碳管結構具有較小的 單位面積熱♦和較大的比表面積，故該奈米碳管結構具 有升溫迅速、熱滯後小、熱交換速度快的特點，故該奈 米碳管、结構組成的超聲發聲器可以發出較寬_範圍内 的超聲聲波，且具有較好的發聲效果。其四，由於奈米 碳管具有較好的機械強度和祕，故由奈米碳管組成的 奈米碳管結構具有較好的機械強度和祕，耐用性較好 ’從而有利於製備由奈米碳管結構喊的各種形狀、尺 寸的超聲發聲器，進而方便地應用於各種領域。其五， 所述發聲元件可在液態介質中發出超聲波，該超聲波具 有廣泛的應用領域，如超聲探測領域等。 [0040] 綜上所述，本發明確已符合發明專利之要件，遂依法提 出專利中請。惟，以上所述者僅為本發明之較佳實施例 ’自不能以此限制本案之申請專利範圍。舉凡習知本案 技藝之人士援依本發明之精神所作之等效修飾或變化， *單编號 09810070文 Α0101 第18頁/乒的w 頁 101__ 1380283 101年10月17日修正替换頁 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0041] 圖1係先前技術中發聲器的結構示意圖。 [0042] 圖2係本發明第一實施例提供的超聲發聲器的結構示意圖 〇 [0043] 圖3係本發明第一實施例中作爲超聲發聲器的發聲元件的 奈米碳管膜的掃描電鏡照片。 [0044] 圖4係圖3令的奈米碳管膜中的奈米碳管片段的結構示意 圖。 [0045] 圖5係本發明第二實施例提供的超聲發聲器的結構示意圖 〇 [0046] 圖6係本發明第三實施例提供的超聲發聲器的結構示意圖 〇 【主要元件符號說明】 [0047] 超聲發聲器：10，20，30 ‘ [0048] 訊號輸入裝置：12，22，32 [0049] 發聲元件：14，24，34 [0050] 液態介質：18，28，38 [0051] 支撐結構：26 [0052] 熱致發聲器的發聲元件：102 [0053] 夾具：1〇4 09810070^^^^ A0101 第19頁/共29頁 1013397544-0 1380283 [0054] 電流引線：106 [0055] 基體：108 [0056] 第一電極：142, 242， 342 [0057] 奈米碳管片段：143 [0058] 第二電極：144，244， 344 [0059] 奈米碳管：145 [0060] 導線：149，249，349 [0061] 第三電極：346 [0062] 第四電極：348 單编號A〇101 第20頁/共29頁 101年10月17日梭正替換頁 1013397544-0[0038] It can be understood that the present invention can be provided with a plurality of electrodes, the number of which is not limited, and it is only necessary to ensure that two adjacent electrodes are electrically connected to both ends of the signal input device. [0039] The material ultrasonic sounder has the following advantages: because the sounding element in the ultrasonic sounder only includes the carbon nanotube structure, the structure of the ultrasonic sounder is relatively simple 'helping to reduce the ultrasonic sounding The cost of the device. The ultrasonic sound generator uses the input signal to cause the temperature of the carbon nanotube structure to change, thereby changing the density of the liquid medium, thereby emitting ultrasonic waves. Third, since the carbon nanotube structure has a small heat per unit area and a large specific surface area, the carbon nanotube structure has the characteristics of rapid temperature rise, small thermal hysteresis, and high heat exchange rate, so the nanometer is The carbon tube and the structure of the ultrasonic sounder can emit ultrasonic sound waves in a wide range, and have a good sounding effect. Fourth, since the carbon nanotubes have good mechanical strength and secret, the carbon nanotube structure composed of carbon nanotubes has good mechanical strength and secret, and has good durability, thereby facilitating the preparation of nanocarbon. The ultrasonic sounders of various shapes and sizes shouted by the tube structure are conveniently applied to various fields. Fifth, the sound emitting element can emit ultrasonic waves in a liquid medium, and the ultrasonic wave has a wide range of applications, such as the field of ultrasonic detection. [0040] In summary, the present invention has indeed met the requirements of the invention patent, and the patent is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention is not limited thereto. Anyone who is familiar with the skill of the present invention will be able to cover the equivalent modifications or changes made in accordance with the spirit of the present invention. * Single No. 09810070 Wen Hao 0101 Page 18 / Ping W page 101__ 1380283 October 17, 2011 Correction replacement page should cover It is within the scope of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0041] FIG. 1 is a schematic structural view of a sound generator in the prior art. 2 is a schematic structural view of an ultrasonic sound generator according to a first embodiment of the present invention. [0043] FIG. 3 is a scanning electron microscope of a carbon nanotube film as a sounding element of an ultrasonic sound generator in a first embodiment of the present invention. photo. 4 is a schematic view showing the structure of a carbon nanotube segment in the carbon nanotube film of FIG. 5 is a schematic structural view of an ultrasonic sounder according to a second embodiment of the present invention. [0046] FIG. 6 is a schematic structural diagram of an ultrasonic sounder according to a third embodiment of the present invention. [Main component symbol description] [0047] Ultrasonic Sounder: 10, 20, 30 ' [0048] Signal Input Device: 12, 22, 32 [0049] Sounding Element: 14, 24, 34 [0050] Liquid Medium: 18, 28, 38 [0051] Support Structure :26 [0052] Sounding element of the thermo-acoustic generator: 102 [0053] Fixture: 1〇4 09810070^^^^ A0101 Page 19 of 29 1013397544-0 1380283 [0054] Current lead: 106 [0055] Base :108 [0056] First electrode: 142, 242, 342 [0057] Carbon nanotube segment: 143 [0058] Second electrode: 144, 244, 344 [0059] Carbon nanotube: 145 [0060] Conductor: 149,249,349 [0061] Third electrode: 346 [0062] Fourth electrode: 348 Single number A 〇 101 Page 20 / Total 29 pages October 17, 101 Shuttle replacement page 1013397544-0