M417950 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種過濾器的技術，具體地說是一種用於 飼育醫學研究實驗鼠的單體換氣籠盒的過濾器，並為一低阻 高效空氣過濾器。 【先前技術】 鲁 目前市場上的氣體過濾器結構複雜、過濾效果不理想， 透氣率較低’比如申請第200720074317.5號「一種氣體過 濾器濾芯」的專利申請案，其揭示濾芯設置在氣體過濾器的 设體中，包括過濾單元、罩設在過濾單元頂部和底部且具有 中心開孔的上下端蓋，以及套設在該中心開孔上用於密封濾 芯和殼體的密封圈；其中該過濾單元包括同軸且内外套設的 内、外層圓柱筒，以及設置在内、外層圓柱筒間用於吸附固 體顆粒的過濾層；又該内外層圓柱筒上均開設有多個網孔， • 該過濾單元還包括套設在外層圓柱筒外側且用於導引液滴 流至過濾器底部的引流層，該過濾層包括兩纖維過濾層和夾 設在兩表面過濾層間的纖維層。 綜上所述，整個裝置不僅結構複雜，同時過濾能效不是 最向點，淨化級別爲SPF級（無特殊病原體），體積龐大， 適用性不強。同時現有技術中，還在外殼内設置纖毛中芯空 氣減速器，不但使整個裝置體積增大而且成本較高。 【新型内容】 3 M417950 本創作的目的在於提供一種用於單體換氣蘢盒的過濾 器，並克服現有技術中裝置結構複雜、過濾效果不理想，透 氣率較低的缺陷。 爲了實現上述目的，本創作所使用的主要技術手段係令 上述用於單體換氣籠盒的過濾器包括有一外殼，該外殼的一 端設有前蓋’另-端設有後蓋，並於該外殼内設有過滤内 芯’該過濾内芯則由内芯支架與設在内芯支架内的複式過濾 膜連接而成。 使用時，本創作的過濾器設有低阻高效的過濾内芯，可 使得換氣時減少進出氣的阻擋增加透氣率，且過濾内芯呈橢 圓筒形，使得整個裝置結構更爲簡單，重量下降7〇%，體積 減；>、30 /。透氣率上升到95%以上，淨化級別可以達到最 高的無菌級（GF級）。 【實施方式】 以下結合附圖和實施例對本創作進一步的描述如下。 凊參閱圖1及圖2所示，本創作係一種用於單體換氣籠 盒的過濾器，其主要包括一外殼2,該外殼2的一端設有前 蓋1,又該外殼2的另-端設有後蓋3,再於該外殼2内設 有過濾内芯4，而該過濾内芯4由内芯支架與設在内芯支架 内的複式過濾膜5連接而成》 上述内芯支架由兩個橢圓形的内、外框架6、7連接而 成，内、外框架6、7上均設有對應的透氣孔71(内框架透 氣孔圖中未示），0、外框架6、7之間設有複式過㈣5, 複式過遽膜5由單層過渡膜夾空氣層構成，複式過滤膜5折 M417950 豎成若干個蛇形過濾·層後安置在内、外框架6、7之間，並 與内、外框架6、7緊密接觸，相鄰的蛇形過濾層之間設有 密封的空氣層，蛇形過濾層的設置方向與内、外框架的徑向 一致。若干個蛇形過濾層是指至少50個蛇形過濾層。透氣 孔71呈方形、圓形、橢圓形或三角形。 在本實施例中，該過濾内芯呈橢圓筒形，使得整個過濾 器重量和體積大大降低，不僅節省了原材料，適用範圍也更 廣泛。過濾内芯由内芯支架與設在内芯支架内的複式過濾膜 連接而成，内芯支架由一大一小橢圓形的内、外框架套設而 成’内、外框架上均設有對應的長方形透氣孔，複式過濾膜 按照内、外框架之間的空間大小折疊成若干個蛇形過濾層， 蛇形過濾層與内、外框架緊密接觸，使過濾器在換氣時減少 進出氣的阻擋增加透氣率，而整體的透氣率上升到95〇/〇以 上’淨化級別可以達到最高的無菌級（GF級），是一種低 P 且高效的用於單體換氣籠盒的過濾器。 【圖式簡單說明】 圖1 :係本創作一較佳實施例的侧視圖。 圖2 :係圖1的前視部分剖面圖。 【主要元件符號說明】 2外殼 4過濾内芯 6内框架 1前蓋 3後蓋 5複式過濾膜 5 M417950 外框架 71透氣孔M417950 V. New description: [New technical field] This creation is about a filter technology, specifically a filter for a single gas exchange cage for breeding medical research rats, and is a low High efficiency air filter. [Prior Art] The current gas filter on the market is complicated in structure, the filtration effect is not ideal, and the air permeability is low. For example, the patent application of "2007-200520074317.5 "a gas filter cartridge" discloses that the filter element is disposed in the gas filter. The installation body includes a filter unit, upper and lower end caps disposed at the top and bottom of the filter unit and having a central opening, and a sealing ring sleeved on the central opening for sealing the filter element and the casing; wherein the filtering The unit comprises an inner and outer cylindrical cylinder which is coaxial and has an inner jacket, and a filter layer for adsorbing solid particles between the inner and outer cylinders; and the inner and outer cylinders are provided with a plurality of meshes, and the filter The unit further includes a drainage layer disposed outside the outer cylindrical cylinder for directing the flow of droplets to the bottom of the filter, the filtration layer comprising two fibrous filtration layers and a fibrous layer interposed between the two surface filtration layers. In summary, the whole device is not only complicated in structure, but also the filtering energy efficiency is not the most point, the purification level is SPF level (no special pathogen), the volume is large, and the applicability is not strong. At the same time, in the prior art, a cilia core air reducer is also disposed in the outer casing, which not only increases the volume of the entire device but also has a high cost. [New Content] 3 M417950 The purpose of this creation is to provide a filter for a single-ventilation cassette, and to overcome the drawbacks of the prior art that the structure of the device is complicated, the filtering effect is not ideal, and the gas permeability is low. In order to achieve the above object, the main technical means used in the present invention is that the filter for the single ventilator case includes a casing having a front cover at one end and a rear cover at the other end. The outer core of the casing is provided with a filter core. The filter core is connected by an inner core support and a double filter membrane disposed in the inner core support. When used, the filter of the present invention is provided with a low-resistance and high-efficiency filter core, which can reduce the resistance of the inlet and outlet during ventilation, increase the air permeability, and the filter core has an elliptical cylinder shape, so that the structure of the whole device is simpler and the weight is simple. Decrease by 7〇%, volume reduction; >, 30 /. The air permeability rises above 95% and the purification level can reach the highest level of sterility (GF grade). [Embodiment] The present invention will be further described below with reference to the accompanying drawings and embodiments. Referring to Figures 1 and 2, the present invention is a filter for a single ventilator case, which mainly comprises a casing 2, one end of which is provided with a front cover 1 and another of the outer casing 2 a rear cover 3 is disposed at the end, and a filter core 4 is disposed in the outer casing 2, and the filter core 4 is connected by the inner core support and the double filter film 5 disposed in the inner core support. The bracket is formed by connecting two elliptical inner and outer frames 6 and 7. The inner and outer frames 6 and 7 are respectively provided with corresponding venting holes 71 (not shown in the inner frame venting hole), and the outer frame 6 There is a duplex (4) between the 7 and the 5, and the double pass film 5 is composed of a single layer of transition film sandwiched air layer. The double filter film is folded 50 times. M417950 is erected into several serpentine filters and layers are placed in the inner and outer frames 6, 7 Between the two, the inner and outer frames 6, 7 are in close contact with each other, and a sealed air layer is disposed between the adjacent serpentine filter layers, and the serpentine filter layer is disposed in the same direction as the inner and outer frames. Several serpentine filter layers refer to at least 50 serpentine filter layers. The venting holes 71 are square, circular, elliptical or triangular. In the present embodiment, the filter core has an elliptical cylinder shape, so that the weight and volume of the entire filter are greatly reduced, which not only saves raw materials, but also has a wide range of applications. The filter core is formed by connecting the inner core bracket and the double filter membrane disposed in the inner core bracket, and the inner core bracket is sleeved by a large and small oval inner and outer frame. Corresponding rectangular venting holes, the double filter membrane is folded into several serpentine filter layers according to the space between the inner and outer frames, and the serpentine filter layer is in close contact with the inner and outer frames, so that the filter reduces the ingress and egress during ventilation. The barrier increases the air permeability, while the overall air permeability rises above 95 〇 / ' 'The purification level can reach the highest sterility level (GF grade), is a low P and efficient filter for the monomer ventilator box . BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a preferred embodiment of the present invention. Figure 2 is a front cross-sectional view of the portion of Figure 1. [Main component symbol description] 2 outer casing 4 filter inner core 6 inner frame 1 front cover 3 rear cover 5 double filter film 5 M417950 outer frame 71 vent hole