201127272 六、發明說明： 【發明所屬之技術領域】 本發明關於一種放電裝置，特別是關於一種藉由施加 高電壓至放電電極以產生放電並防止放電影響週邊電子裝 置的放電裝置。 【先前技術】 近年來，將水原子化（噴霧化；atomizing )以產生帶 電（荷）之細小水顆粒的放電裝置已吸引注意。帶電水的 細小顆粒有時被稱爲細小水液滴或奈米尺寸的霧，且其典 型的尺寸是數奈米至數十奈米。專利文件1揭露此種習知 的放電裝置。 前述放電裝置具有用於將液體（即水）從作爲放電部 之針狀電極的尖端原子化的電子電路。電路包括高電壓產 生器、控制電路、和類似者。 引用清單 專利文獻 日本專利申請案，公開第2006·122759號。 【發明內容】 技術問題 至今，有—種藉由將空氣冷卻而產生凝結水的技術’ 其減少供給水被凝結的步驟，且施加高電壓至已凝結的水 以將該已凝結水原子化。但是在原子化中的放電輻射雜訊 201127272 至外側，且該等雜訊可造成周邊裝置故障。此可成爲一種 問題。 考慮上述情況而形成本發明，且目的在於提供一種放 電裝置，其能夠防止被施加高電壓之放電電極成爲雜訊的 輻射源，該輻射源對周邊裝置造成負效應》且該放電裝置 較佳是能夠防止其因爲來自外界的周邊雜訊（例如靜電、 電磁波、和類似者）而故障。 問題的解決方案 本發明的一方面是一種放電裝置，其包含：放電電極 ;電性絕緣部，包括容置該放電電極的原子化室；水供給 器，被建構用於將水供給至該放電電極的表面；高電壓供 應器，被建構用於施加高電壓至該放電電極，以從該放電 電極的尖端部將該已供給的水原子化爲帶電水細小顆粒； 和電磁屏障，設置成至少圍繞該原子化室，該電磁屏障具 有開口，以排出該等帶電水細小顆粒。 該電磁屏障可爲導電殼體，其容置該原子化室、該水 供給器、和該高電壓供應器》 該電性絕緣部可爲電性絕緣殼體，其另外容置該水供 給器和該高電壓供應器。在此情況中，該電磁屏障可被形 成爲覆蓋該電性絕緣部之外表面的傳導層。 發明的有利功效 依據具有上述組態的放電裝置，電磁屏障可防止放電 -6- 201127272 電極成爲雜訊至外側的輻射源。放電裝置可進一步防止放 電裝置被來自外側的雜訊所影響° 【實施方式】 下文參考圖式描述本發明的實施例。 圖1顯示本發明實施例的放電裝置丨。建構放電裝置 1以產生帶電水細小顆粒M。如上所述’帶電水細小顆粒 Μ有時被稱作細小水液滴或奈米尺寸的霧’且帶電水細小 顆粒Μ的典型尺寸是數奈米至數十奈米。 如圖2所示，放電裝置1具有放電單元11和設置在 放電單元11周圍的電磁屏障7。放電單元11包括放電電 極2、水凝結裝置4、和高電壓供應器5°水凝結裝置4包 括冷卻部4b和熱輻射部4c。冷卻部4b冷卻放電電極2， 以使空氣的溼氣凝結在放電電極2的表面上。熱輻射部4 c 將冷卻放電電極2時所產生的熱輻射出去。高電壓供應器 5供給高電壓置放電電極2’以將已凝結在放電電極2之 尖端部2a上的水原子化。在本實施例中，高電壓供應器5 施加負的高電壓至放電電極2。 放電電極2的尖端部2 a形成針或類似物。換言之， 尖端部2a形成錐狀導線’且當作可能在該處發生放電的 放電部。 在圖2所示的實施例中，水凝結裝置4具有帕爾帖（ Peltier)裝置4a。冷卻部4b被設置成熱學地連接在帕爾 帖裝置4 a的冷側和放電電極2之間。熱輻射部4 c被設置 201127272 成熱學地連接在帕爾帖裝置4a的熱側和輻射鰭片9之間 〇 放電裝置具有馬達風扇（未示），其產生風以冷卻輻 射鰭片9。出口 6是電磁屏障7的末端開口部，從出口 6 排出來自馬達的風。在圖2中，參考數字20指示具有開 口的支架，支架20圍繞放電電極2。支架20是由是由絕 緣材料製成。參考數21指示環狀電極，將環狀電極21設 置成面對放電電極2。環狀電極21被接地。同時，可省略 支架20和環狀電極21。 放電單元11進一步包括冷卻控制器和用於控制高電 壓供應器5的控制器（控制電路）1 0 (見圖1 )。該冷卻 控制器送出用於冷卻或類似的指令給水凝結裝置4。在本 實施例中，放電單元1 1的冷卻控制器將作爲冷卻指令的 電力供給至帕爾帖裝置4a，藉此冷卻冷卻部4b。所以放 電電極2被冷卻，且空氣的溼氣被凝結在放電電極2上成 爲凝結水。因此，冷卻部4b當作用於將水供給至放電電 極2之裝置。放電單元11的控制器10控制高電壓供應器 5，以施加高電壓至放電電極2，且在凝結水黏附於放電電 極2上時，在放電電極2和對應的電極21之間產生高電 場。當施加高電壓時，黏附在尖端部2a上的凝結水被原 子化。明確地說，凝結水被集合至放電電極2的尖端部2a ，且放電電極2和對應電極21之間的放電重複凝結水的 瑞利（Rayleigh )分裂，因此凝結水變成帶電水細小顆粒 Μ。然後，帶電水細小顆粒Μ被馬達風扇吹送，且因此從 -8 - 201127272 出口 6排出。控制器1 0依據冷卻部4b的冷卻程度控制待 產生之凝結水的量。明確地說，控制器1 〇維持凝結水的 適合量，以確保產生帶電水細小顆粒μ，不會被其周圍的 溫度和溼度所影響。 如上所述，帶電水細小顆粒Μ包括原子團，例如過氧 化物原子團、氫氧化物原子團。因此，他們有除臭功效、 抑制病毒、細菌、黴菌生長的功效、使過敏原失去活性的 功效、和類似者。因此，當帶電水細小顆粒Μ被分佈在房 室內時，其可將房室內的空氣、牆壁、床單、和類似者除 臭。此外，帶電水細小顆粒可抑制過敏原或使過敏原失去 活性。該過敏原例如黏在織物（例如床單、地毯、墊子、 和類似者）之蟎的屍體、從戶外被帶入室內的花粉、和類 似者。 如圖1所示，本實施例的電磁屏障7形成爲管狀殼體 ，在其末端具有開口部。出口 6被安裝在開口部上。帶電 水細小顆粒Μ被從出口 6排出。容置放電電極2的原子化 室3被設置在電磁屏障7內接近出口 6的一側上。且水凝 結裝置4和控制器1 0被設置在電磁屏障7內之原子化室3 的後面。原子化室3形成爲電性絕緣部的全部或一部分， 此將於下文說明。 電磁屏障7防止放電電極2成爲雜訊的輻射源。在本 實施例中，電磁屏障7是導電殼體，其例如由金屬製成。 電磁屏障7經由接地導線8接地。電性絕緣部1 5是由（ 例如樹脂或類似者的）絕緣材料製成。電性絕緣部1 5覆 -9- 201127272 蓋電磁屏障7之內表面的至少一部分（該部分圍繞放電電 極2 )。明確地說，電性絕緣部1 5至少作爲圍繞放電電極 2的原子化室3。同時，電性絕緣部1 5可全部被形成在電 磁屏障7之內表面上。 取代前述的組態，電磁屏障可形成爲傳導層（傳導膜 )，其覆蓋電性絕緣層1 5的外表面。在此情況中，電性 絕緣部15形成爲殼體，其作爲原子化室3並容置放電單 元11，且藉由將金屬電鍍在絕緣部15之外表面上而形成 傳導層，以至少圍繞（覆蓋）原子化室3的圓周，其爲電 性絕緣部1 5的一部分。傳導層經由接地導線8而接地。 同時，傳導層可完全形成在電性絕緣部15的外表面上。 和原子化室3之開口側連通的出口 6是由管狀的樹脂 模組1 6所構成。樹脂模組1 6防止帶電水細小顆粒Μ黏附 在出口 6的內表面上。在本實施例中，樹脂模組1 6是和 電磁屏障7及電性絕緣部1 5分開製造，且樹脂模組1 6被 安裝在電磁屏障7及電性絕緣部15上。樹脂模組16可和 電磁屏障7及電性絕緣部15 —體成形。當電磁屏障17形 成爲金屬殻體時，從電磁屏障7的內表面至樹脂模組16 之出口 6的內表面進行連續的電性絕緣處理。 藉由接地導線8將電磁屏障7接地，且因此可防止放 電電極2成爲輻射雜訊源。即使當施加高電壓至放電電極 2且雜訊從放電電極輻射時，經由接地導線8傳輸雜訊並 將雜訊接地。因此，可防止周邊裝置、電腦、和類似者因 爲雜訊而故障》 -10- 201127272 再者，作爲原子化室3的電性絕緣部1 5被形成在電 磁屏障7的內表面上。因此，放電電極2和電磁屏障7之 間沒有發生放電，且藉此可增加帶電水細小顆粒Μ的產生 效率。 此外，由於周邊靜電和電磁波而來自外側的周邊雜訊 ，被電磁屏障7所屏蔽。因此，可以防止容置在電磁屏障 7內的放電單元11因爲周邊雜訊而故障。 因爲電磁屏障7被建構成容置放電單元11的殼體、 或被形成爲在殻體上的傳導層，所以具有減少輻射雜訊之 功能的放電裝置1的構造變得簡單。 在本實施例中，排出帶電水細小顆粒Μ的出口 6是由 樹脂模製而成。因此，出口 6的內表面當作電性絕緣部， 其能防止帶電水細小顆粒Μ黏附在其上，且能增加帶電水 細小顆粒Μ的排出效率。 在本實施例中，水凝結裝置4被顯示成用於將水供給 至放電電極2的裝置。但是該裝置可由桿狀輸送部構成， 該桿狀輸送部將水供給至其尖端部且也作爲前述放電電極 。在此情況中，桿狀輸送部具有毛細管、槽、或類似者， 其從水罐吸收水並將水供給至桿狀輸送部的尖端部。 【圖式簡單說明】 圖1是顯示本發明實施例之放電裝置的組態的示意圖 〇 圖2是放電裝置之放電電極周圍的橫剖面視圖。 -11 - 201127272 【主要元件符號說明】 1 :放電裝置 2 :放電電極 2a :尖端部 3 :原子化室 4 :水凝結裝置 4 a :帕爾帖裝置 4b :冷卻部 4c :熱輻射部 5 :高電壓供應器 6 :出口 7 :電磁屏障 8 :接地導線 9 :輻射鰭片 1 〇 :控制器 1 1 :放電單元 1 5 :電性絕緣部 1 6 :樹脂模組 20 :支架 2 1 :環狀電極 Μ :帶電水細小顆粒 -12-BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge device, and more particularly to a discharge device which generates a discharge by applying a high voltage to a discharge electrode and prevents discharge from affecting peripheral electronic devices. [Prior Art] In recent years, a discharge device that atomizes water to produce charged (charged) fine water particles has attracted attention. The fine particles of charged water are sometimes referred to as fine water droplets or nanometer-sized mists, and their typical dimensions are from several nanometers to several tens of nanometers. Patent Document 1 discloses such a conventional discharge device. The foregoing discharge device has an electronic circuit for atomizing a liquid (i.e., water) from a tip end of a needle electrode as a discharge portion. The circuit includes a high voltage generator, a control circuit, and the like. Citation List Patent Literature Japanese Patent Application No. 2006-122759. [Disclosure] [Technical Problem] Heretofore, there has been a technique of generating condensed water by cooling air, which reduces the step in which the supply water is condensed, and applies a high voltage to the condensed water to atomize the condensed water. However, the discharge radiation noise in the atomization is 201127272 to the outside, and the noise can cause peripheral device failure. This can be a problem. The present invention has been made in view of the above circumstances, and an object thereof is to provide a discharge device capable of preventing a discharge electrode to which a high voltage is applied from being a radiation source of noise, which radiation source has a negative effect on a peripheral device, and the discharge device is preferably It can be prevented from malfunctioning due to peripheral noise (such as static electricity, electromagnetic waves, and the like) from the outside. Solution to Problem An aspect of the present invention is a discharge device including: a discharge electrode; an electrical insulation portion including an atomization chamber accommodating the discharge electrode; and a water supplier configured to supply water to the discharge a surface of the electrode; a high voltage supply configured to apply a high voltage to the discharge electrode to atomize the supplied water from the tip end portion of the discharge electrode into charged water fine particles; and an electromagnetic barrier set to at least Around the atomization chamber, the electromagnetic barrier has an opening to discharge the fine particles of the charged water. The electromagnetic barrier may be a conductive housing that houses the atomization chamber, the water supplier, and the high voltage supply. The electrical insulation portion may be an electrically insulating housing that additionally houses the water supplier. And the high voltage supply. In this case, the electromagnetic barrier may be formed as a conductive layer covering the outer surface of the electrical insulating portion. Advantageous Effects of Invention According to the discharge device having the above configuration, the electromagnetic barrier prevents the discharge -6-201127272 electrode from becoming a source of noise to the outside. The discharge device can further prevent the discharge device from being affected by noise from the outside. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 shows a discharge device 本 according to an embodiment of the present invention. The discharge device 1 is constructed to produce fine particles M of charged water. As described above, 'charged water fine particles Μ are sometimes referred to as fine water droplets or nanometer-sized mists' and charged water fine particles Μ typically have a size ranging from several nanometers to several tens of nanometers. As shown in Fig. 2, the discharge device 1 has a discharge unit 11 and an electromagnetic barrier 7 disposed around the discharge unit 11. The discharge unit 11 includes a discharge electrode 2, a water condensation device 4, and a high voltage supply 5° water condensation device 4 including a cooling portion 4b and a heat radiation portion 4c. The cooling portion 4b cools the discharge electrode 2 so that moisture of the air condenses on the surface of the discharge electrode 2. The heat radiation portion 4c radiates heat generated when the discharge electrode 2 is cooled. The high voltage supply 5 supplies a high voltage discharge electrode 2' to atomize water that has condensed on the tip end portion 2a of the discharge electrode 2. In the present embodiment, the high voltage supply 5 applies a negative high voltage to the discharge electrode 2. The tip end portion 2a of the discharge electrode 2 forms a needle or the like. In other words, the tip end portion 2a forms a tapered wire 'and serves as a discharge portion where discharge may occur. In the embodiment shown in Fig. 2, the water condensing device 4 has a Peltier device 4a. The cooling portion 4b is disposed to be thermally connected between the cold side of the Peltier device 4a and the discharge electrode 2. The heat radiation portion 4c is disposed to be thermally coupled between the hot side of the Peltier device 4a and the radiation fins 9. The discharge device has a motor fan (not shown) that generates wind to cool the radiation fins 9. The outlet 6 is an end opening of the electromagnetic barrier 7, and the wind from the motor is discharged from the outlet 6. In Fig. 2, reference numeral 20 indicates a holder having an opening, and the holder 20 surrounds the discharge electrode 2. The bracket 20 is made of an insulating material. Reference numeral 21 indicates a ring-shaped electrode, and the ring-shaped electrode 21 is disposed to face the discharge electrode 2. The ring-shaped electrode 21 is grounded. At the same time, the holder 20 and the ring-shaped electrode 21 can be omitted. The discharge unit 11 further includes a cooling controller and a controller (control circuit) 10 for controlling the high voltage supply 5 (see Fig. 1). The cooling controller sends a command water supply condensing device 4 for cooling or the like. In the present embodiment, the cooling controller of the discharge unit 11 supplies electric power as a cooling command to the Peltier device 4a, thereby cooling the cooling portion 4b. Therefore, the discharge electrode 2 is cooled, and moisture of the air is condensed on the discharge electrode 2 to become condensed water. Therefore, the cooling portion 4b serves as means for supplying water to the discharge electrode 2. The controller 10 of the discharge unit 11 controls the high voltage supply 5 to apply a high voltage to the discharge electrode 2, and generates a high electric field between the discharge electrode 2 and the corresponding electrode 21 when the condensed water adheres to the discharge electrode 2. When a high voltage is applied, the condensed water adhering to the tip end portion 2a is atomized. Specifically, the condensed water is collected to the tip end portion 2a of the discharge electrode 2, and the discharge between the discharge electrode 2 and the corresponding electrode 21 repeats the Rayleigh splitting of the condensed water, so that the condensed water becomes the charged water fine particles Μ. Then, the charged water fine particles are blown by the motor fan and thus discharged from the -8 - 201127272 outlet 6. The controller 10 controls the amount of condensed water to be generated in accordance with the degree of cooling of the cooling portion 4b. Specifically, controller 1 maintains a suitable amount of condensate to ensure that fine particles of charged water are generated and are not affected by the temperature and humidity around them. As described above, the fine particles of charged water include atomic groups such as peroxide radicals and hydroxide radicals. Therefore, they have deodorizing effects, effects of inhibiting the growth of viruses, bacteria, molds, ineffectiveness of allergens, and the like. Therefore, when the charged fine particles are distributed in the room, they can deodorize the air, walls, sheets, and the like in the room. In addition, fine particles of charged water can inhibit allergens or deactivate the allergens. The allergens are, for example, corpses stuck to fabrics (e.g., sheets, carpets, mats, and the like), pollen brought indoors from the outdoors, and the like. As shown in Fig. 1, the electromagnetic barrier 7 of the present embodiment is formed as a tubular casing having an opening at its end. The outlet 6 is mounted on the opening. Charged water fine particles are discharged from the outlet 6. The atomization chamber 3 accommodating the discharge electrode 2 is disposed on the side of the electromagnetic barrier 7 close to the outlet 6. And the water condensation device 4 and the controller 10 are disposed behind the atomization chamber 3 in the electromagnetic barrier 7. The atomization chamber 3 is formed as all or a part of the electrical insulation portion, which will be described below. The electromagnetic barrier 7 prevents the discharge electrode 2 from becoming a source of noise. In the present embodiment, the electromagnetic barrier 7 is a conductive housing made of, for example, metal. The electromagnetic barrier 7 is grounded via a grounding conductor 8. The electrical insulating portion 15 is made of an insulating material such as a resin or the like. The electrical insulating portion 15 covers -9-201127272 to cover at least a portion of the inner surface of the electromagnetic barrier 7 (this portion surrounds the discharge electrode 2). Specifically, the electrical insulating portion 15 serves at least as the atomization chamber 3 surrounding the discharge electrode 2. At the same time, the electrical insulating portion 15 may be entirely formed on the inner surface of the electromagnetic barrier 7. Instead of the aforementioned configuration, the electromagnetic barrier may be formed as a conductive layer (conductive film) that covers the outer surface of the electrically insulating layer 15. In this case, the electrical insulating portion 15 is formed as a casing as the atomization chamber 3 and houses the discharge unit 11, and a conductive layer is formed by plating a metal on the outer surface of the insulating portion 15 to surround at least (covering) the circumference of the atomization chamber 3, which is a part of the electrical insulation portion 15. The conductive layer is grounded via a ground conductor 8. At the same time, the conductive layer may be completely formed on the outer surface of the electrical insulating portion 15. The outlet 6 communicating with the opening side of the atomization chamber 3 is constituted by a tubular resin module 16. The resin module 16 prevents the fine particles of charged water from adhering to the inner surface of the outlet 6. In the present embodiment, the resin module 16 is separately manufactured from the electromagnetic barrier 7 and the electrical insulating portion 15, and the resin module 16 is mounted on the electromagnetic barrier 7 and the electrical insulating portion 15. The resin module 16 can be integrally formed with the electromagnetic barrier 7 and the electrical insulating portion 15. When the electromagnetic barrier 17 is formed into a metal casing, continuous electrical insulation treatment is performed from the inner surface of the electromagnetic barrier 7 to the inner surface of the outlet 6 of the resin module 16. The electromagnetic barrier 7 is grounded by the grounding conductor 8, and thus the discharge electrode 2 can be prevented from becoming a source of radiated noise. Even when a high voltage is applied to the discharge electrode 2 and noise is radiated from the discharge electrode, noise is transmitted via the ground wire 8 and the noise is grounded. Therefore, peripheral devices, computers, and the like can be prevented from malfunctioning due to noise. -10- 201127272 Further, an electrical insulating portion 15 as the atomization chamber 3 is formed on the inner surface of the electromagnetic barrier 7. Therefore, no discharge occurs between the discharge electrode 2 and the electromagnetic barrier 7, and thereby the generation efficiency of fine particles of charged water can be increased. Further, peripheral noise from the outside due to peripheral static electricity and electromagnetic waves is shielded by the electromagnetic barrier 7. Therefore, it is possible to prevent the discharge unit 11 housed in the electromagnetic barrier 7 from malfunctioning due to peripheral noise. Since the electromagnetic barrier 7 is constructed to constitute a housing accommodating the discharge unit 11, or a conductive layer formed on the housing, the configuration of the discharge device 1 having a function of reducing radiation noise becomes simple. In the present embodiment, the outlet 6 for discharging the fine particles of charged water is molded of a resin. Therefore, the inner surface of the outlet 6 serves as an electrical insulating portion which prevents the fine particles of the charged water from adhering thereto and can increase the discharge efficiency of the fine particles of the charged water. In the present embodiment, the water condensing device 4 is shown as a device for supplying water to the discharge electrode 2. However, the apparatus may be constituted by a rod-shaped conveying portion that supplies water to the tip end portion thereof and also serves as the discharge electrode. In this case, the rod-shaped conveying portion has a capillary, a groove, or the like which absorbs water from the water tank and supplies the water to the tip end portion of the rod-shaped conveying portion. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the configuration of a discharge device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of a discharge electrode around a discharge electrode. -11 - 201127272 [Description of main component symbols] 1 : Discharge device 2 : Discharge electrode 2 a : Tip portion 3 : Atomization chamber 4 : Water condensation device 4 a : Peltier device 4 b : Cooling portion 4 c : Thermal radiation portion 5 : High voltage supply 6 : outlet 7 : electromagnetic barrier 8 : grounding conductor 9 : radiating fin 1 〇 : controller 1 1 : discharge unit 1 5 : electrical insulation 1 6 : resin module 20 : bracket 2 1 : ring Electrode Μ: charged water fine particles-12-