M415656 五、新型說明： 【新型所屬之技術領域】 本創作關於一種金爐，尤其是關於一種可增進燃燒效 果、改善灰燼堵塞並且可達到環保之目的者。 【先前技術】 燃燒金紙係為傳統祭祀儀式的過程之一，一般係將金 紙散佈堆疊於金爐中燃燒。習知的金爐係為側壁上分布多 個通氣孔之筒體，雖然可藉由通氣孔達成空氣對流以增進 金紙之燃燒，然而靠近於底部中央的金紙，由於金紙堆疊 的重量使得金紙之間的間隙狹小，而使空氣難以流通於金 紙之間，造成燃燒不完全，並且，燃燒後的灰燼堆疊於筒 體底部，導致燃燒效果更為低落。而另一習知的金爐係在 筒體底部設置架高的網狀底面，該網狀底面係使金紙與筒 體底部間形成間距或空間，可增加空氣流通部之效果，並 可使部分燃燒後的灰燼掉落於間距或空間中，以改善灰燼 阻礙燃燒之問題。 然而，上述習知的金爐中，筒體之側壁上所開設之通 氣孔係導致灰燼逸散於金爐之外，進而造成環境污染；另 外，習知的金爐所使用之上蓋係封閉筒體上方，不利於空 氣對流循環，進而降低燃燒效率，然若不使用上蓋進行燃 燒，灰燼之污染將更加嚴重；再者，網狀底面雖然增加筒 了體底部的空氣對流，然對於堆疊聚積於筒體中間處的金 紙，其燃燒效果的改善仍十分有限，並且，當堆積的灰燼 3 M415656 增加時，將阻塞網狀底面與筒體底部的間距或空間，使得 燃燒過程耗時且效果不佳，且更不利於進行金爐的清潔。 【新型内容】 本創作之目的係提供一種金爐，其具有改善金紙堆 疊、避免灰燼阻塞及逸散、提高燃燒效率、環保及方便拆 卸運輸之優點。 為達上述目的，本創作之一種金爐係包括：一筒體， 其内部形成有向上開放的容置空間，且該筒體侧壁的底端 具有至少一進氣口，以使外部空氣流通於該容置空間中； 一通風座，具有一連接部、複數通風口、複數擋片及複數 支腳，該等通風口與該等擂片係形成於該通風座表面，該 等支腳係用於使該通風座支撐於該筒體底部；以及一通風 管，安裝於該連接部，該通風管之兩端及側壁係形成有開 口以供空氣流通。 上述之金爐中，該等擋片可分別形成斜面、弧面或曲 面，且該等擋片係連接於該等通風口之周緣的一部份。 本創作另提供一種金爐，包括：一筒體，其内部形成 有向上開放的容置空間，且該筒體側壁的底端具有至少一 進氣口； 一通風座，具有一連接部、一網盤、複數支架及 複數支腳，該等支架係於該網盤上方一高度處共同形成一 支撐面，該等支腳係用於使該通風座支撐於該筒體底部； 以及一通風管，安裝於該連接部，該通風管之兩端及侧壁 係形成有開口以供空氣流通。 4 M415656 上述之金爐中，該筒體頂端邊緣可具有至少一安裝 件，用以安裝至少一提把。 上述之金爐中，該進氣口之高度小於或等於該支腳之 有互金爐中，該通風管之—端及該連接部係分別具 有相對應之喪合結構、卡合結構、扣合結構或螺合結構。 上述之金爐中，該通風管係具有複數桿體及至少一套 衣，該等桿體間隔地環繞排列並固定於該套環。 上述之金爐中，該金爐進一步包含一上筌 以蓋合於該筒體並具有至少—出氣口；其中皇=蓋用 對應於該通風管之位置。 ” ^軋口係 因此，相較於習知的金爐，本創作之金爐 可增加堆疊金紙之間的空隙，且通風座與通風管，座 燒所產生之灰燼阻塞空氣的流通循環，以使金^=燃 燒，進而提升燃燒效率及節省燃燒時間；並且，/勾« 的通風座與通風管係可便於金爐運輸或存放時=可却式 有效節省運輸或存放時所需之空間；此外，本 卸，可 燃燒中之灰燼四散於金爐之外，而具有環保之優】可防止 【實施方式】 為充分了解本創作之目的、特徵及功效，〜 之 具體實施例’並配合所附圖式，對本創作作一古紙轉由以下 請參照第i圖及第2圖，其係為本創作f田貌明。 金爐的組合示意圖及分解示意圖。金爐丨—實施例 要包含筒 5 M415656 ιυ、通風座2〇及通風 …"、田似洗贫紙時可於金爐内 部形成空氣對流循環。於圖式中，筒體1〇之内部形成有向 上開放的容置空間12’且筒體1G侧壁的底端具有進氣: 14，使外界空氣可通過進氣口 14流通於容置空間12中· 通風座20具有連接部22、複數通風口 24、複數 另 複數支腳28，通風口 24與擋片26係形成於通風田座2〇表 面’擋片26可避免層疊的金紙因重量而密集堆積在通風座 表面’而可在金紙之間形成較多的間距或空 =二口24而流通於其中，支聊28係、用於使通風座2〇 支擇於筒體H)底部，並使通風座2 離筒體Π)底部有-高度，進而使由進^支揮面距 2 =通風座2G與筒體1Q的底部之_風管3〇 ‘ 氣^ 通風管3〇之兩端及側壁係形成有開口以供： =气故空氣可藉㈣放㈣風管3Q流動 金= 之間，進而提升燃燒效率。 且扪金紙 上述本創作第―實施例之金爐的通風座 可分別形成斜面、弧而七也品Q ^ τ蘇片26 24之月緣的心 擋片％可連接於通風口 4一之周緣的—部份；換言之，擋片％係遮蓋住通風 份並呈立體的斜面、弧面或曲面，使得擋片26可支 牙立的金紙於一側而不完全封閉通風口 24,以避免通 ^4另-側的空氣（即通風座2〇與筒體⑺的底部之間的 二孔被堆疊的金紙阻擋^無法流通。如圖式所示' 26可一體成形於-金屬板體上而同時形成通風口 24, ^ 一步構成通風座20用於支擇金紙的表面。 進 M415656 此外，通風管30與通風座加 第1圖及第2圖中，金爐i的通風座^之結構，於 圓形的卡合孔，可使通風管30相對應的^接部22係為 中。然其不限於此，通風管30鼓車安裳於其 別具有互相對應並可拆卸之嵌合結構 部22係可分 構或螺合結構，以利於金爐1之 ^構、如合結 合。 抑放時可拆卸或組 請參照第3圖及第4网，廿^、 金爐的組合示意圖及分解示意圖^^創^二實施例之 10、通風座50及通風管3〇,用於者 要包含筒體 部形成空氣對流循環。於圖式中，田筒體燒^紙時可於金爐内 上開放的容置空間12，且 '之内部形成有向 ^吏外界空氣可通過進氣，= 底置 通風座50具有連接部52、網盤^ 中， 聊％，支架56係於_ 54 ±卜^數^ 56及複數支 隙的支標面，使金紙可始属糾间度處共同形成具有間 成凸起之效果而在堆属的二4撐面及網盤54上，並形 使通過網盤54的处氣"^/之間產生間距或空間，進而 風座Μ擇於筒體1底;T ;切58係用於使通 '成的心與㈣底财H54及支架I8所形 .進入的空氣可流動於通風座：進:口14 風管30安裝於連接部52，通風=10的底部之間’·通 有開口以供空氣-ϋ，… 之兩端及側壁係形成 流入，拍二y,L 工氣可藉由通風管30底端的開口 '、、&由八側壁上的開ϋ流動於堆疊的金紙之間，進 而提升燃燒效率。 54係可乍第二實施例之金爐2的通風座50中，網盤 圈^形成^數金屬圈542及複數金屬連結件⑽，金屬 有間隙或通口 /心圓並固定於金屬連結件544,以構成具 5。盘筒H網盤54，可使空氣流私其間，即通風座 體10之-的底部之間的空氣可通過網盤54而流通於筒 <各置空間12當中。 第=1卜1通風管30與通風座50係為可拆卸之結構，於 由雙芦去，圖中，金爐2的通風座5〇之連接部52係為 n ^架形成的圓形安裝孔，可使通風管30上相對應的 ^端安裝於其中。然其不限於此，通風管30之-端及 人=部52係可分別具有互相對應並可拆卸之叙合結構、卡 構、扣合結構或螺合結構，以利於金爐2之搬運或存 放時可拆卸或組合。 一凊—併參照第1圖至第4圖，本創作第一實施例及第 二實施例中，金爐丨、2之筒體10頂端邊緣可進一步具有 安裳件16，用於安裝提把18,以利於搬動金爐卜2。此外， 金爐1、2之筒體1〇侧壁的底端之進氣口 14，其高度係小 於或等於通風座20、50的支腳28、58之高度，故可避免 支撐於通風座20、5〇上的金紙從進氣口 14掉落於筒體1〇 之外，.另.知燃燒嘗中·’由於空氣循環鈇應使空氣不斷從進 氣口 14逢入，故燃燒後之灰燼不易掉落出進氣口 14之外， 並且，設於筒體10底端的遶氣口 14更可利於燃燒後灰燼 之清除，可方便將筒體10’底部的灰燼傾倒出來。 其施例及第二實施例中，金爐i、2之通風 34俜門隔地體34及至少-套環36構成，複數桿體 34係間“％繞排列並固定於套 騎體 之兩端及侧壁形成有開口，： ’可在通風管30 氣流通;其t，桿體34及套環3二==«供空 藉由焊接以互相m定。 打為金屬材質，並可 可進再ΐ包=第一實施例及第二實施例中，金爐1'2 ^儘四散於筒體1G之外。上蓋4Q係具有出氣Μ j j佳係對應於魏f 3G頂端的位置，可形錢流通道以使 谷置空間12中的空氣通過出氣口 42流出。 請一併參照第1圖及第5圖，第5圖係為說明本創作 第-實施例之金爐使用時空紐動循環的示意圖。使用金 爐^燃燒金紙時，首先將金紙置於容置空間12中，使其 堆疊於通風座2G表面，再進行燃燒。其中，藉由擔片％ 使金紙之間產生不規則間隙，並使通風口 24不被金紙封 閉，因此於燃燒時，空氣由筒體1〇側壁底端的進氣口 進入，並通過通風座20之通風口 24及通風管30之開口而 流通於金紙之間，燃燒後的熱空氣往上升並通過上蓋40之 出氣口 42而流動至筒體10之外，圖中所示之箭頭方向係 表示燃燒時空氣流動之方向。此外，本創作第二實施例之 金爐2使用時之空氣流動循環狀態係大致相同於第一實施 例之金爐1，故在此不贅述。 因此’相較於習知的金爐，本創作之金爐中，通風座 M415656 可增加堆疊金紙之間的空隙’且通風座與通風管可改盖燃 燒所產生之灰燼阻塞空氣的流通循環’以使金紙可均勾燃 燒，進而提升燃燒效率及節省燃燒時間；並且’以可拆式 的通風座與通風管係可便於金爐運輸或存放時之拆卸，可 燃燒中之灰燼四散需之空間；此外，了J防止 本創作在上文中已壚之外，而具有環保。 Β 巳由較佳實施例揭露，然熟習本項技M415656 V. New description: [New technical field] This creation is about a kind of gold furnace, especially for those who can improve the combustion effect, improve the ash blockage and achieve environmental protection. [Prior Art] Burning gold paper is one of the processes of traditional ritual rituals. Generally, gold paper is scattered and stacked in a gold furnace for burning. The conventional gold furnace is a cylinder in which a plurality of vent holes are distributed on the side wall. Although air convection can be achieved by the vent hole to promote the burning of the gold paper, the gold paper near the center of the bottom is made up of the weight of the gold paper stack. The gap between the gold papers is narrow, and it is difficult for air to circulate between the gold papers, resulting in incomplete combustion, and the burnt ash is stacked on the bottom of the cylinder, resulting in a lower combustion effect. Another conventional gold furnace system is provided with a high mesh bottom surface at the bottom of the cylinder body, and the mesh bottom surface forms a space or space between the gold paper and the bottom of the cylinder body, which can increase the effect of the air circulation portion and can Part of the burned ash falls into the space or space to improve the ash impeding combustion problem. However, in the above-mentioned conventional gold furnace, the vent hole formed on the side wall of the cylinder causes the ash to escape outside the gold furnace, thereby causing environmental pollution; in addition, the conventional gold furnace is used to cover the closed cylinder. Above the body, it is not conducive to air convection circulation, thereby reducing the combustion efficiency. However, if the upper cover is not used for combustion, the pollution of the ash will be more serious. Moreover, although the mesh bottom surface increases the air convection at the bottom of the cylinder, it is accumulated on the stack. The improvement of the combustion effect of the gold paper in the middle of the cylinder is still very limited, and when the accumulated ash 3 M415656 increases, it will block the spacing or space between the mesh bottom surface and the bottom of the cylinder, making the combustion process time-consuming and not effective. Good, and more difficult to clean the gold furnace. [New content] The purpose of this creation is to provide a gold furnace with the advantages of improving the stacking of gold paper, avoiding clogging and escape of ash, improving combustion efficiency, environmental protection and convenient disassembly and transportation. In order to achieve the above object, a gold furnace system of the present invention comprises: a cylinder having an upwardly open accommodating space therein, and a bottom end of the side wall of the cylinder having at least one air inlet for circulating external air In the accommodating space, a ventilating seat has a connecting portion, a plurality of vents, a plurality of flaps and a plurality of legs, and the vents and the rafts are formed on the surface of the venting seat, and the legs are The ventilating seat is supported on the bottom of the cylinder; and a venting pipe is mounted on the connecting portion, and the two ends of the venting pipe and the side wall are formed with openings for air circulation. In the above gold furnace, the baffles may respectively form a bevel, a curved surface or a curved surface, and the baffles are connected to a portion of the periphery of the vents. The present invention further provides a gold furnace, comprising: a cylinder having an upwardly open accommodating space therein, and a bottom end of the side wall of the cylinder has at least one air inlet; a venting seat having a connecting portion and a a mesh tray, a plurality of brackets and a plurality of legs, the brackets jointly forming a support surface at a height above the network tray, the legs being for supporting the ventilation seat at the bottom of the cylinder; and a ventilation tube Installed in the connecting portion, the two ends of the air duct and the side wall are formed with openings for air circulation. 4 M415656 In the above-mentioned gold furnace, the top edge of the cylinder may have at least one mounting member for mounting at least one handle. In the above-mentioned gold furnace, the height of the air inlet is less than or equal to the mutual gold furnace of the leg, and the end of the air duct and the connecting part respectively have a corresponding funnel structure, a snap structure, and a buckle Structure or screw structure. In the above-mentioned gold furnace, the air duct has a plurality of rod bodies and at least one set of clothes, and the rod bodies are circumferentially arranged and fixed to the collar. In the above gold furnace, the gold furnace further comprises a top cover to cover the cylinder and has at least an air outlet; wherein the upper cover is corresponding to the position of the air duct. ^Rolling system Therefore, compared with the conventional gold furnace, the gold furnace of this creation can increase the gap between the stacked gold papers, and the ventilating seat and the ventilation pipe, the ash generated by the burning of the seat blocks the circulation of the air. In order to make the gold ^= burn, thereby improving the combustion efficiency and saving the burning time; and, the ventilating seat and the ventilation pipe system of the / hook « can facilitate the transportation or storage of the gold furnace = can effectively save the space required for transportation or storage In addition, the unloading, the ash that can be burned is scattered outside the gold furnace, and the environmental protection is excellent] can prevent [implementation] In order to fully understand the purpose, characteristics and efficacy of the creation, the specific embodiment of the work For the purpose of the drawing, please refer to the i-th and the second drawing for the creation of the original paper. The drawing is a schematic diagram of the combination of the golden furnace and the exploded view. The gold furnace - the embodiment should contain The cylinder 5 M415656 ιυ, the ventilating seat 2〇 and the ventilation...", the likes to wash the poor paper can form an air convection cycle inside the gold furnace. In the figure, the inside of the cylinder 1〇 has an upwardly open accommodating space. 12' and cylinder 1G The bottom end of the wall has intake air: 14. The outside air can flow through the air inlet 14 in the accommodating space 12. The ventilating seat 20 has a connecting portion 22, a plurality of vents 24, a plurality of other legs 28, and a vent 24 The baffle 26 is formed on the surface of the ventilating field. The baffle 26 prevents the laminated gold paper from being densely deposited on the ventilating seat surface due to the weight, and can form more spacing or space between the gold papers. 24 and circulate in it, the 28 series is used to make the ventilating seat 2 〇 to the bottom of the cylinder H), and the ventilating seat 2 has a height from the bottom of the cylinder ,) Distance 2 = venting seat 2G and the bottom of the cylinder 1Q _ duct 3 〇 ' gas ^ venting tube 3 〇 both ends and side walls are formed with openings for: = air, air can be borrowed (four) put (four) duct 3Q flow Between the gold and the other, the combustion efficiency is improved. Moreover, the ventilating seat of the gold furnace of the first embodiment of the present invention can form a bevel, an arc, and a heart stop of the seventh edge of the Q ^ τ Su piece 26 24 The piece % can be connected to the portion of the periphery of the vent 4; in other words, the % of the cover covers the ventilating portion and has a three-dimensional bevel, The curved surface or the curved surface enables the flap 26 to support the gold paper on one side without completely closing the vent 24 to avoid the air on the other side (ie, the ventilating seat 2 〇 and the bottom of the cylinder (7) The two holes are blocked by the stacked gold paper. It can not be circulated. As shown in the figure, '26 can be integrally formed on the metal plate body while forming the vent 24, ^ one step constitutes the venting seat 20 for selecting the gold paper. In addition, the air duct 30 and the ventilating seat are added in the first and second figures, the structure of the ventilating seat of the gold furnace i, in the circular engaging hole, the corresponding ventilating tube 30 can be connected The portion 22 is medium. However, the present invention is not limited thereto, and the ventilating tube 30 is slidably mounted on the housing structure 22 which is detachable and can be disassembled or screwed to facilitate the gold furnace 1 Structure, such as combination. For the detachable or grouping, please refer to the 3rd and 4th nets, 组合^, the combination diagram of the gold furnace and the decomposition diagram. ^2, the ventilator 50 and the ventilator 3〇 It is necessary to include a cylinder portion to form an air convection cycle. In the figure, when the field tube is burned, the accommodating space 12 can be opened in the gold furnace, and the inside of the body is formed with a direction to the outside air through the air inlet, and the bottom venting seat 50 has a connection portion. 52, the network disk ^, talk %, the bracket 56 is in the _ 54 ± 卜 ^ ^ ^ 56 and the number of the branch of the surface of the gap, so that the gold paper can be formed at the same time to form a convex effect On the second and fourth support faces of the stack and the mesh plate 54, the gap is formed between the gas and the space of the mesh plate 54, and the wind seat is selected at the bottom of the cylinder 1; The 58 series is used to make the heart and the (4) base H54 and the bracket I8. The incoming air can flow to the ventilating seat: the inlet 14 is installed between the connecting portion 52 and the bottom of the ventilation = 10 '·There is an opening for the air-ϋ,... the two ends and the side wall form an inflow, taking two y, L gas can be flowed through the opening at the bottom end of the air duct 30, & Between the stacked gold paper, which improves combustion efficiency. In the ventilating seat 50 of the gold furnace 2 of the second embodiment, the mesh ring φ is formed with a plurality of metal rings 542 and a plurality of metal connecting members (10), and the metal has a gap or a port/heart circle and is fixed to the metal connecting member. 544, to constitute a 5th. The disk H mesh disk 54 allows the air to flow privately, i.e., the air between the bottoms of the venting base 10 can flow through the mesh disk 54 to the respective spaces 12 of the cartridges. The first air passage pipe 30 and the air ventilating base 50 are detachable structures, and are connected by the double hoist. In the figure, the connecting portion 52 of the ventilating seat 5 of the gold furnace 2 is a circular installation formed by the n ^ frame. The hole allows the corresponding end of the air duct 30 to be installed therein. However, the present invention is not limited thereto, and the end portion of the air duct 30 and the person portion 52 may respectively have a reciprocating structure, a card structure, a snap structure or a screw structure corresponding to each other to facilitate the handling of the gold furnace 2 or It can be removed or combined when stored. 1 - 4, in the first embodiment and the second embodiment of the present invention, the top edge of the cylinder of the gold furnace 2, 2 may further have an armor member 16 for mounting the handle 18, in order to facilitate the movement of the gold furnace 2. In addition, the height of the air inlet 14 of the bottom end of the side wall of the cylindrical body of the gold furnace 1, 2 is less than or equal to the height of the legs 28, 58 of the airing seats 20, 50, so that the support can be avoided. 20, 5 金 gold paper fell from the air inlet 14 outside the cylinder 1 ,, another know that the burning taste · 'because the air circulation 使 should allow air to continually enter from the air inlet 14, so burn The rear ash is not easily dropped out of the air inlet 14, and the air vent 14 provided at the bottom end of the cylinder 10 can facilitate the removal of the ash after combustion, and the ash at the bottom of the cylinder 10' can be easily poured out. In the embodiment and the second embodiment, the ventilation furnace 34 of the gold furnaces i and 2 and the at least the collar 36 are formed, and the plurality of rods 34 are “around” and fixed at both ends of the sleeve body. And the side wall is formed with an opening,: 'can be ventilated in the air duct 30; its t, the rod body 34 and the collar 3 two == «air supply by welding to each other m. The metal material, and can be further In the first embodiment and the second embodiment, the gold furnace 1'2 is scattered outside the cylinder 1G. The upper cover 4Q has an air outlet Μ jj, which corresponds to the position of the top of the Wei f 3G, and can be shaped The flow passage causes the air in the valley space 12 to flow out through the air outlet 42. Referring to FIG. 1 and FIG. 5 together, FIG. 5 is a view showing the use of the space-time interaction cycle of the gold furnace of the present invention. Schematic. When using gold furnace to burn gold paper, the gold paper is first placed in the accommodating space 12, and stacked on the surface of the ventilating seat 2G, and then burned. The gap is regular and the vent 24 is not closed by the gold paper, so when burning, the air enters from the air inlet of the bottom end of the side wall of the cylinder 1 The vents 24 of the ventilating seat 20 and the openings of the venting pipe 30 circulate between the gold paper, and the hot air after the combustion rises up and flows out of the cylinder 10 through the air outlet 42 of the upper cover 40, as shown in the figure. The direction of the arrow indicates the direction of the air flow during the combustion. In addition, the air flow circulation state of the gold furnace 2 of the second embodiment of the present invention is substantially the same as that of the gold furnace 1 of the first embodiment, and therefore will not be described herein. Therefore, compared with the conventional gold furnace, in the gold furnace of this creation, the ventilation seat M415656 can increase the gap between the stacked gold papers, and the ventilation seat and the ventilation pipe can be changed to cover the circulation of the ash blocking air generated by the combustion. 'In order to make the gold paper can be burned, thus improving the combustion efficiency and saving the burning time; and 'the detachable ventilation seat and the ventilation pipe system can facilitate the disassembly of the gold furnace during transportation or storage, and the ash can be burned in the middle. In addition, J prevents the creation of the creation from being outside the above, and is environmentally friendly. Β 揭 is disclosed by the preferred embodiment, but is familiar with this technique.
效之變化與置換，均。應注意的是，舉凡與實施例等 本創作之㈣料於輔料㈣内此， 準。 …^下文之申請專利範圍所界疋者為 【圖式簡單說明】 第1圖係為本創作彳 第2圖係為本創作〈 第3圖係為本創作〈 第4圖係為本創作 第5圖係為本創作) 的示意圖 〜實施例之金爐的組合示意圖。 〜實施例之金爐的分解示意圖。 二實施例之金爐的組合示意圖。 二實施例之金爐的分解示意圖。 一實施例之金爐使用時空氣流動 【主要元件符號說明】 1 ' 2金爐 筒體 M415656 容置空間 進氣口 安裝件 提把 通風座 連接部 通風口 擋片 支腳 通風管 桿體 套環 上蓋 出氣口 通風座 連接部 網盤 金屬圈 金屬連結件 支架 支腳Changes in effect and replacement, both. It should be noted that, in the case of the example, etc. (4), it is expected to be in the auxiliary material (4). ...^ The following patent application scope is defined as [simple description of the drawing] The first picture is the original creation of the second picture is the creation of the creation of the third picture is the creation of the creation of the fourth picture is the creation of the first 5 is a schematic diagram of the creation of the present invention - a schematic diagram of the combination of the gold furnace of the embodiment. ~ Decomposition diagram of the gold furnace of the embodiment. A schematic diagram of the combination of the gold furnace of the second embodiment. A schematic exploded view of the gold furnace of the second embodiment. Air flow of the gold furnace in one embodiment [Main component symbol description] 1 '2 gold furnace cylinder M415656 accommodating space air inlet mounting piece handle ventilating seat connection part venting vent piece foot venting pipe rod collar Upper cover air outlet vent seat connection part mesh metal ring metal link bracket foot