M442434 五、新型說明： 【新型所屬之技術領域】 ’ 接裝置 ί新型是歸-料妓置，_是_-種法蘭連 【先前技術】 空調系統係指一種調節空氣 k被使用在一般大ϋ： τ成士 ’皿又之系統，目前廣泛地 「隨用在般大樓或工廉中，然而在 : 須安裝風管用以輸送冷氣、暖_ 了不使風管内之冷氣或暖氣㈣，風管都二讀:而為 能的設計。另外，在空調風管之裝配 二具有隔熱功 配合講求簡便性及實質效益。t王，，，遵檢修亦需 入一般傳紅風管裝配及其法蘭件之組 金屬片以沖壓成形方式彎折出一，弋係將一 蘭件上而緊密夹持對庠之法g ’、s扣具扣設於法 情應之法祕，以穩定固定風管。 丨ς丰域藝之缺點在於此種失固方式僅靠延伸壁 法闌件，谷易因扣具產生金屬疲勞或受 寺 具鬆脫而與法蘭件相互分離，使法蘭件 < 扣 !:容易使風管產生鬆脫。又因習知技藝的爽=定； C法蘭件，容易因扣具產生金屬疲勞或受震動 法—扣ΐ鬆脫而與法蘭件相互分離’造成法蘭件無 “达固疋風管，而導致風管產生鬆脫之問題。 …、 【新型内容】 本新型之一技術態樣為一種法蘭連接裝置。 3 M442434 根據本新型一實施方式，一種法蘭連接裝置，用以連 接兩風管，包含兩法蘭本體及嵌合件。其中每一法蘭本體， 包含第一法蘭件及第二法蘭件。第一法蘭件為鋁質法蘭 件，具有連接部與卡掣部。第二法蘭件為一丙烯腈-丁二烯 -苯乙烯樹脂法蘭件，具有卡槽部，卡掣部與卡槽部卡掣固 定。嵌合件具有相對兩端部，每一端部與每一第一法蘭件 之連接部嵌合。 在本新型一實施方式中，嵌合件係鋁質嵌合件或聚氣 •乙烯嵌合件。 在本新型一實施方式中，每一第一法蘭件連接每一風 管之側牆外壁，每一第二法蘭件連接每一風管之側牆内壁。 在本新型一實施方式中，第二法蘭件更包含至少一空 腔。 在本新型一實施方式中，嵌合件為一 u型嵌合件。 在本本新型一實施方式，每一法蘭本體與相對之法蘭 _本體形成間隙。 根據本新型另一實施方式，一種法蘭連接裝置，用以 連接兩風管，包含兩法蘭本體及嵌合件。其中每一法蘭本 體，包含第一法蘭件及第二法蘭件。第一法蘭件為鋁質法 蘭件，具有卡掣部。第二法蘭件為一丙烯腈-丁二烯-苯乙 烯樹脂法蘭件，具有連接部與卡槽部，卡掣部與卡槽部卡 掣固定。嵌合件具有相對兩端部，每一端部與每一第二法 蘭件之連接部嵌合。 在本新型另一實施方式中，每一嵌合件係鋁質嵌合件 或聚氯乙烯嵌合件。 4 M442434 在本新型另一實施方式中，每一第一法蘭件連接每一 風管之侧牆外壁，每一第二法蘭件連接每一風管之侧牆内 壁。 在本新型另一實施方式中，嵌合件為Η型嵌合件。 在本新型上述實施方式中，由於本新型之法蘭連接裝 置可緊密組合風管，因此組合後的風管之氣體洩漏率低而 可減少氣體之消耗量。並且法蘭連接裝置之第一法蘭件與 第二法蘭件的設計可使法蘭連接裝置同時具有防撞避震且 ®可防止風管及法蘭連接裝置產生水氣結露狀態，更進一步 具有防火的功能。而風管利用本新型之法蘭連接裝置連接 後，大致為一體成型的狀態，相較於傳統風管之構形較為 美觀且組合後更不容易脫落。 【實施方式】 以下將以圖式揭露本新型之複數個實施方式，為明確 說明起見，許多實務上的細節將在以下敘述中一併說明。 ®然而，應瞭解到，這些實務上的細節不應用以限制本新型。 也就是說，在本新型部分實施方式中，這些實務上的細節 是非必要的。此外，為簡化圖式起見，一些習知慣用的結 構與元件在圖式中將以簡單示意的方式繪示之。 請參照第1圖，其繪示依照本新型一實施例的一種法 蘭連接裝置100連接風管200之外觀示意圖。如第1圖所 示，本新型之法蘭連接裝置100用以連接兩風管200。每 一風管200之開口的每一側邊皆卡合一法蘭本體101，利 用法蘭本體101連接兩風管200相對應的開口後，進一步 5 M442434 加上嵌合件l〇2 ’將兩兩相對的法籣本體ιοί嵌合固定。 因上述實施方式將兩風管200連接，並可進一步的連接數 個風管200。其中每一法蘭本體i(H，是由第一法蘭件u〇 及第二法蘭件120所組合形成。第一法蘭件11〇為鋁質法 蘭件’第二法籣件120為一丙烯腈-丁二烯-笨乙烯樹脂法 蘭件。在本實施例中’利用第二法籣件120連接風管200 的側牆内壁202，可用以絕熱使風管200不會因側牆内壁 202與側牆外壁201的溫度差而在法蘭本體1〇1上水氣結 擊露。另外，利用第一法蘭件110連接風管200的側牆外壁 2〇1，可利用鋁質金屬堅固的特性，以避免外在撞擊造成法 蘭本體101及風管200的損傷並且具有防火的功能。 請參照第2圖，其繪示依照本新塑一實施例之一種法 蘭連接裝置100之剖面示意圖。如第2圖所示，本新塑之 法蘭連接裝置1〇〇 ’用以連接兩風管200，包含兩法蘭本體 1 〇 1及喪合件102。其中每一法蘭本體1 〇 1，包含兩法蘭本 體及嵌合件102。風管200的開口的每一側邊均設置 • 一法蘭本體101 ’利用嵌合件1〇2嵌合兩法蘭本體1〇1將 兩風管200組合固定。 每一法蘭本體101 ’包含第一法蘭件110及第二法籣 件120。第一法蘭件110為鋁質法蘭件，具有連接部112 與卡掣部114。第二法蘭件120為一丙烯腈-丁二烯-苯乙烯 樹脂法蘭件’具有卡槽部122。第一法蘭件110的卡掣部 會滑入第二法蘭件120的卡槽部122卡掣固定。在本 實施例中，每一第一法蘭件11〇連接每一風管2〇〇之側牆 外壁201 ’每一第二法蘭件120連接每一風管200之側牆 6 M442434 内壁202。利用第二法蘭件120連接風管200的側牆内壁 202,可用以絕熱使風管200不會因側牆内壁202與側牆外 壁201的溫度差而在法蘭本體101上水氣結露。另外，利 用第一法蘭件110連接風管200的側牆外壁201，可利用 鋁質金屬堅固的特性，以避免外在撞擊造成法蘭本體101 及風管200的損傷並且具有防火的功能。 兩法蘭本體101的連接部112連接後形成一槽體，因 此可連接嵌合件102並利用嵌合件102之相對兩端部 鲁102a，每一端部102a可嵌合每一第一法蘭件110之連接部 112，並因此將兩法蘭本體101組合固定。在本實施例中， 連接部112所形成的槽體為一 U型槽體，因此可設置一嵌 合件102為U型嵌合件，以將嵌合件102的端部102a嵌合 形成槽體的兩連接部112。在本實施例中，嵌合件102係 鋁質嵌合件或聚氯乙烯嵌合件。 在本實施例中，嵌合件102與第一法蘭件110嵌合後， 第一法蘭件110的外表面與後合件102的外表面大致成一 鲁平面。 在本實施例中，第二法蘭件120更包含空腔124。可 用以增加第二法蘭件120之絕熱效果，進一步減少風管200 及法蘭本體101外表產生水氣結露的機會。 請參照第3圖，其繪示依照本新型另一實施例之一種 法蘭連接裝置100之剖面示意圖。如第3圖所示，本新型 之法蘭連接裝置100，用以連接兩風管200，包含兩法蘭本 體101及嵌合件102。其中每一法蘭本體101，包含兩法蘭 本體101及嵌合件102。風管200的開口的每一側邊均設 7 M442434 置一法蘭本體1G1 ’利时合件1G2故合兩法蘭本體1〇1 將兩風管200級合固定。 每一，蘭本體101，包含第一法蘭件110及第二法蘭 件120。第一法蘭件110為铭質法蘭件，具有連接部112 與卡掣部114。第二法蘭件12G為―丙烯腈_丁二稀_笨乙稀 樹脂法蘭件’具有卡槽部122。第一法蘭件11〇的卡掣部 114會滑入第二法蘭件12〇的卡槽部122卡掣固定。在本 實施例中，每一第一法蘭件110連接每一風管2〇〇之側牆 鲁外壁201，每一第二法蘭件12〇連接每一風管2〇〇之侧牆 内壁202。利用第二法蘭件12〇連接風管200的側牆内壁 202 ’可用以絕熱使風管200不會因侧牆内壁202與侧牆外 壁201的溫度差而在法蘭本體1〇1上水氣結露◊另外，利 用第一法蘭件110連接風管200的側牆外壁201，可利用 鋁質金屬堅固的特性，以避免外在撞擊造成法籣本體101 及風管200的損傷並且具有防火的功能。 兩法蘭本體101的連接部112連接後形成一槽體，因 籲此可連接嵌合件102並利用嵌合件102之相對兩端部 102a，每一端部l〇2a可嵌合每一第一法蘭件110之連接部 112 ’並因此將兩法蘭本體1〇1組合固定。在本實施例中， 連接部112所形成的槽體為一 U型槽體，因此可設置一嵌 .合件102為U型嵌合件，以將嵌合件102的端部102a嵌合 形成槽體的兩連接部112。在本實施例中’嵌合件1〇2係 鋁質嵌合件或聚氯乙烯嵌合件。 在本實施例中，第二法蘭件120更包含至少一空腔 124’且每一法蘭本體101與相對之法籣本體1〇1形成間隙 M442434 126’進一步減少風管200及法蘭本體ιοί外表產生水氣結 露的機會。 #清參照第4圖’其繪示依照本新型再一實施例之一種 法蘭連接裝置100之剖面示意圖。本新型另一實施例之一 種法蘭連接裝置100之剖面示意圖。如第4圖所示，本新 型之法蘭連接裝置100,用以連接兩風管200,包含兩法蘭 本體101及歲合件102。其中每一法蘭本體101，包含兩法 蘭本體101及嵌合件1〇2。風管2〇〇的開口的每一侧邊均 鲁设置一法蘭本體10〗，利用嵌合件1〇2嵌合兩法蘭本體1〇1 將兩風管200組合固定。 每一法蘭本體101，包含第一法蘭件110及第二法蘭 件120。第一法蘭件11〇為鋁質法蘭件，具有卡掣部114。 第二法蘭件120為一丙烯腈-丁二烯__苯乙烯樹脂法蘭件， 具有連接部123與卡槽部122。第一法蘭件110的卡掣部 114會滑入第二法蘭件12〇的卡槽部122卡掣固定。在本 實施例中’每一第一法蘭件11()連接每一風管2〇〇之側牆 •外壁201，每一第二法蘭件12〇連接每一風管2〇〇之側牆 内壁202。利用第二法蘭件12〇連接風管2〇〇的側牆内壁 202’可用以絕熱使風管200不會因侧牆内壁202與側牆外 壁201的溫度差而在法蘭本體101上水氣結露。另外，利 用第一法蘭件110連接風管200的側牆外壁201，可利用 鋁質金屬堅固的特性，以避免外在撞擊造成法蘭本體ι〇ι 及風管200的損傷並且具有防火的功能。 兩法蘭本體101的連接部123連接後形成一槽體，因 此可連接嵌合件102並利用嵌合件1〇2之相對兩端部 9 M442434 102a，每一端部102a可嵌合每一第二法蘭件120之連接部 123，並因此將兩法蘭本體101組合固定。在本實施例中， 連接部123所形成的槽體為一 Η型槽體，因此可設置一嵌 合件102為Η型嵌合件，以將嵌合件102的端部102a嵌合 形成槽體的兩連接部123。在本實施例中，嵌合件102係 鋁質嵌合件或聚氯乙烯嵌合件。 本新型上述實施方式與先前技術相較，具有以下優點： (1) 由於本新型之法蘭連接裝置可緊密組合風 管，因此組合後的風管之氣體洩漏率低而可減 少氣體之消耗量。 (2) 由於本新型之法蘭連接裝置之第一法蘭件與 第二法蘭件的設計可使法蘭連接裝置同時具 有防撞避震且可防止風管及法蘭連接裝置產 生水氣結露狀態，更進一步具有防火的功能。 (3) 風管利用本新型之法蘭連接裝置連接後係大 致為一體成型的狀態，相較於傳統風管較為美 觀且更不容易脫落。 雖然本新型已以實施方式揭露如上，然其並非用以限 定本新型，任何熟習此技藝者，在不脫離本新型之精神和 範圍内，當可作各種之更動與潤飾，因此本新型之保護範 圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 M442434 為讓本新型之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之說明如下： 第1圖係繪示依照本新型一實施例的一種法蘭連接裝 置連接風管之外觀示意圖。. 第2圖係繪示依照本新型一實施例之一種法蘭連接裝 置之剖面示意圖。 第3圖係繪示依照本新型另一實施例之一種法蘭連接 裝置之剖面示意圖。 第4圖係繪示依照本新型再一實施例之一種法蘭連接 裝置之剖面示意圖。 【主要元件符號說明】 100 :法蘭連接裝置 101 :法蘭本體 102 :嵌合件 102a :端部 110 :第一法蘭件 112 :連接部 114 :卡掣部 120 :第二法蘭件 122 :卡槽部 123 :連接部 124 :空腔 M442434 126 :間隙 200 :風管 201 :侧牆外壁 202 :側牆内壁M442434 V. New description: [New technology field] 'Connecting device ί new type is --material ,, _ is _- kind flange connection 【Prior technology】 Air conditioning system means that a regulating air k is used in general ϋ: The system of τ Chengshi's dish is now widely used in general buildings or in construction, but in: air ducts must be installed to transport cold air, warm _ without air conditioning or heating in the duct (4), wind The second reading of the tube: the design of the energy. In addition, the assembly of the air conditioning duct has the function of heat insulation to emphasize the simplicity and substantial benefits. t Wang,,,,,,,,,,, The metal piece of the flange member is bent and bent out by the stamping and forming method, and the 弋 system is tightly clamped to the 兰 庠 method, and the 扣 buckle is buckled in the legal condition to stabilize the fixing. The shortcoming of the Fengfeng domain art is that the method of losing the solid is only by the method of extending the wall. The valley is separated from the flange by the metal fatigue caused by the buckle or the looseness of the temple. Buckle!: It is easy to loosen the air duct. C flange parts, it is easy to cause metal fatigue or shock by the buckle method - the buckle is loose and separated from the flange parts, which causes the flange parts to have no "during solid air duct", which causes the air duct to loosen. . ..., [new content] One of the technical aspects of the present invention is a flange connection device. 3 M442434 According to an embodiment of the present invention, a flange connecting device is used for connecting two air ducts, including two flange bodies and a fitting. Each of the flange bodies includes a first flange member and a second flange member. The first flange member is an aluminum flange member having a connecting portion and a latch portion. The second flange member is an acrylonitrile-butadiene-styrene resin flange member having a card groove portion, and the latch portion and the card slot portion are fixed. The fitting has opposite end portions, each of which is fitted to a joint portion of each of the first flange members. In an embodiment of the invention, the fitting is an aluminum fitting or a gas-filled vinyl fitting. In an embodiment of the present invention, each of the first flange members is connected to the outer wall of the side wall of each duct, and each of the second flange members is connected to the inner wall of the side wall of each duct. In an embodiment of the invention, the second flange member further comprises at least one cavity. In an embodiment of the present invention, the fitting member is a u-shaped fitting. In one embodiment of the present invention, each flange body forms a gap with the opposing flange body. According to another embodiment of the present invention, a flange connecting device is provided for connecting two air ducts, including two flange bodies and a fitting. Each of the flange bodies includes a first flange member and a second flange member. The first flange member is an aluminum flange member having a snap portion. The second flange member is an acrylonitrile-butadiene-styrene resin flange member having a connecting portion and a card slot portion, and the latch portion and the card slot portion are fixed. The fitting has opposite end portions, each end portion being fitted to the joint portion of each of the second flange members. In another embodiment of the present invention, each of the fitting members is an aluminum fitting or a polyvinyl chloride fitting. 4 M442434 In another embodiment of the present invention, each of the first flange members is coupled to the outer wall of each of the side walls of each of the ducts, and each of the second flange members is coupled to the inner wall of the side wall of each of the ducts. In another embodiment of the present invention, the fitting member is a 嵌合-shaped fitting. In the above-described embodiment of the present invention, since the flange connecting device of the present invention can closely combine the ducts, the gas leakage rate of the combined ducts is low, and the consumption of the gas can be reduced. And the first flange member and the second flange member of the flange connecting device are designed to make the flange connecting device have anti-collision and shock absorber at the same time and prevent the air duct and the flange connecting device from being exposed to water and gas, further It has a fireproof function. When the air duct is connected by the flange connecting device of the present invention, it is substantially in an integrally formed state, and the configuration of the conventional air duct is more beautiful and less likely to fall off after being combined. [Embodiment] The embodiments of the present invention are disclosed in the following drawings. For the sake of clarity, a number of practical details will be described in the following description. ® However, it should be understood that these practical details are not applied to limit the novel. That is to say, in some embodiments of the present invention, these practical details are not necessary. Moreover, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings. Please refer to FIG. 1 , which is a schematic diagram showing the appearance of a flange connecting device 100 connected to the air duct 200 according to an embodiment of the invention. As shown in Fig. 1, the flange connecting device 100 of the present invention is used to connect the two ducts 200. Each side of the opening of each air duct 200 is engaged with a flange body 101. After the flange body 101 is connected to the corresponding opening of the two air ducts 200, further 5 M442434 plus the fitting piece l〇2' Two pairs of opposite French body ιοί are fixed. Since the two ducts 200 are connected by the above embodiment, a plurality of ducts 200 can be further connected. Each of the flange bodies i (H is formed by a combination of the first flange member u and the second flange member 120. The first flange member 11 is an aluminum flange member 'the second method member 120 It is an acrylonitrile-butadiene-stupid vinyl resin flange member. In the present embodiment, the side wall 202 of the air duct 200 is connected by the second method 120, and the air duct 200 can be used without insulation. The temperature difference between the inner wall 202 of the wall and the outer wall 201 of the side wall is the water gas junction on the flange body 1〇1. In addition, the outer wall 2〇1 of the side wall of the air duct 200 is connected by the first flange member 110, and the aluminum can be utilized. The sturdy nature of the metal to avoid damage to the flange body 101 and the air duct 200 due to external impact and has a fireproof function. Please refer to FIG. 2, which illustrates a flange connecting device according to an embodiment of the present invention. A cross-sectional view of 100. As shown in Fig. 2, the new plastic flange connecting device 1'' is used to connect the two air ducts 200, and includes two flange bodies 1 〇1 and a funneling member 102. The blue body 1 〇1 includes two flange bodies and a fitting member 102. Each side of the opening of the air duct 200 is provided with a flange 101 'The two air ducts 200 are combined and fixed by fitting the two flange bodies 1〇1 with the fittings 1〇2. Each flange body 101' includes a first flange member 110 and a second flange member 120. First The flange member 110 is an aluminum flange member having a connecting portion 112 and a latch portion 114. The second flange member 120 is an acrylonitrile-butadiene-styrene resin flange member having a card groove portion 122. The latching portion of a flange member 110 is slidably inserted into the slot portion 122 of the second flange member 120. In the present embodiment, each of the first flange members 11 is connected to each of the ducts 2〇〇. The side wall outer wall 201' each of the second flange members 120 is connected to the side wall 6 M442434 inner wall 202 of each air duct 200. The second flange member 120 is used to connect the side wall inner wall 202 of the air duct 200, and the wind can be used to insulate the wind. The tube 200 does not dew condensation on the flange body 101 due to the temperature difference between the side wall inner wall 202 and the side wall outer wall 201. In addition, the first flange member 110 is used to connect the side wall outer wall 201 of the air duct 200, and the aluminum can be utilized. The sturdy nature of the metal to avoid damage to the flange body 101 and the duct 200 caused by external impact and has a fireproof function. After the connecting portion 112 is connected, a groove body is formed, so that the fitting member 102 can be connected and the opposite ends 102a of the fitting member 102 can be used. Each end portion 102a can fit the connecting portion 112 of each of the first flange members 110. Therefore, the two flanged bodies 101 are combined and fixed. In the embodiment, the groove formed by the connecting portion 112 is a U-shaped groove body, so that a fitting member 102 can be provided as a U-shaped fitting member to The end portion 102a of the fitting member 102 is fitted to form the two connecting portions 112 of the groove body. In the present embodiment, the fitting member 102 is an aluminum fitting or a polyvinyl chloride fitting. In this embodiment, after the fitting member 102 is engaged with the first flange member 110, the outer surface of the first flange member 110 and the outer surface of the rear fitting member 102 are substantially flat. In the present embodiment, the second flange member 120 further includes a cavity 124. It can be used to increase the heat insulation effect of the second flange member 120, and further reduce the chance of moisture condensation on the outer surface of the air duct 200 and the flange body 101. Please refer to FIG. 3, which is a cross-sectional view of a flange connecting device 100 according to another embodiment of the present invention. As shown in Fig. 3, the flange connecting device 100 of the present invention is used to connect the two air ducts 200, and includes two flange bodies 101 and a fitting member 102. Each of the flange bodies 101 includes two flange bodies 101 and a fitting member 102. Each side of the opening of the air duct 200 is provided with 7 M442434. A flange body 1G1 is used. The flanged body 1G2 is combined with the two flange bodies 1〇1 to fix the two air ducts 200. Each of the blue body 101 includes a first flange member 110 and a second flange member 120. The first flange member 110 is a name flange member having a connecting portion 112 and a latch portion 114. The second flange member 12G has an "acrylonitrile-butadiene-stuphen resin flange member" having a card groove portion 122. The latching portion 114 of the first flange member 11A is slidably inserted into the slot portion 122 of the second flange member 12A. In this embodiment, each of the first flange members 110 is connected to the outer wall 201 of each side wall of each duct 2, and each second flange member 12 is connected to the inner wall of the side wall of each duct 2 202. The side wall 202' of the side wall of the air duct 200 is connected by the second flange member 12'' to be insulated so that the air duct 200 does not water on the flange body 1〇1 due to the temperature difference between the side wall inner wall 202 and the side wall outer wall 201. In addition, the first flange member 110 is used to connect the side wall outer wall 201 of the air duct 200, and the aluminum metal can be utilized to avoid the damage caused by the external impact of the body 101 and the air duct 200 and to prevent fire. The function. The connecting portion 112 of the two flange bodies 101 is connected to form a groove body, so that the fitting member 102 can be connected and the opposite end portions 102a of the fitting member 102 can be used, and each end portion 〇2a can be fitted into each of the first portions The connecting portion 112' of a flange member 110 and thus the two flange bodies 1〇1 are combined and fixed. In this embodiment, the groove formed by the connecting portion 112 is a U-shaped groove body, so that the fitting member 102 can be provided as a U-shaped fitting member to fit the end portion 102a of the fitting member 102. Two connecting portions 112 of the trough. In the present embodiment, the 'fitting member 1' is an aluminum fitting or a polyvinyl chloride fitting. In this embodiment, the second flange member 120 further includes at least one cavity 124' and each flange body 101 forms a gap M442434 126' with the opposite body body 1〇1 to further reduce the air duct 200 and the flange body ιοί The appearance creates an opportunity for condensation of water vapor. #清 Refer to Fig. 4' for a cross-sectional view of a flange connecting device 100 in accordance with still another embodiment of the present invention. A schematic cross-sectional view of a flange connection device 100 in accordance with another embodiment of the present invention. As shown in Fig. 4, the new type of flange connecting device 100 is for connecting two air ducts 200, and includes two flange bodies 101 and a plurality of joint members 102. Each of the flange bodies 101 includes two flange bodies 101 and fittings 1〇2. A flange body 10 is disposed on each side of the opening of the air duct 2, and the two air ducts 200 are assembled and fixed by fitting the two flange bodies 1〇1 with the fittings 1〇2. Each flange body 101 includes a first flange member 110 and a second flange member 120. The first flange member 11 is an aluminum flange member having a latch portion 114. The second flange member 120 is an acrylonitrile-butadiene _ styrene resin flange member having a connecting portion 123 and a groove portion 122. The latching portion 114 of the first flange member 110 is slidably engaged with the slot portion 122 of the second flange member 12A. In the present embodiment, each of the first flange members 11 () is connected to the side wall of each duct 2, the outer wall 201, and each of the second flange members 12 is connected to the side of each duct 2 Wall inner wall 202. The side wall 202' of the side wall connected to the air duct 2〇〇 by the second flange member 12〇 can be used for heat insulation so that the air duct 200 does not water on the flange body 101 due to the temperature difference between the side wall inner wall 202 and the side wall outer wall 201. Gas condensation. In addition, the first flange member 110 is used to connect the side wall outer wall 201 of the air duct 200, and the aluminum metal can be utilized to ensure the damage of the flange body ι ι and the air duct 200 due to external impact and is fireproof. Features. The connecting portion 123 of the two flange bodies 101 is connected to form a groove body, so that the fitting member 102 can be connected and the opposite end portions 9 M442434 102a of the fitting member 1 2 can be used, and each end portion 102a can be fitted into each of the first portions 102a. The connecting portion 123 of the two flange members 120, and thus the two flange bodies 101 are combined and fixed. In the embodiment, the groove formed by the connecting portion 123 is a groove-shaped groove body, so that a fitting member 102 can be provided as a 嵌合-shaped fitting member to fit the end portion 102a of the fitting member 102 into a groove. Two connecting portions 123 of the body. In the present embodiment, the fitting member 102 is an aluminum fitting or a polyvinyl chloride fitting. Compared with the prior art, the above-mentioned embodiment of the present invention has the following advantages: (1) Since the flange connecting device of the present invention can closely combine the air ducts, the gas leakage rate of the combined air duct is low, and the gas consumption can be reduced. . (2) Due to the design of the first flange member and the second flange member of the flange connecting device of the present invention, the flange connecting device can simultaneously prevent collision and shock and prevent moisture generation of the air duct and the flange connecting device. The condensation state further has a fireproof function. (3) When the air duct is connected by the flange connection device of the present invention, it is substantially integrated, which is more beautiful and less likely to fall off than the conventional air duct. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any one skilled in the art can make various changes and retouchings without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. A schematic view of the appearance of a flange connecting device connected to a duct. Figure 2 is a cross-sectional view showing a flange connecting device in accordance with an embodiment of the present invention. Figure 3 is a cross-sectional view showing a flange connecting device in accordance with another embodiment of the present invention. Figure 4 is a cross-sectional view showing a flange connecting device in accordance with still another embodiment of the present invention. [Description of main component symbols] 100: flange connection device 101: flange body 102: fitting member 102a: end portion 110: first flange member 112: connection portion 114: latch portion 120: second flange member 122 : card groove portion 123 : connection portion 124 : cavity M442434 126 : gap 200 : air duct 201 : side wall outer wall 202 : side wall inner wall