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WO2012013138A1 - 换气扇用的防火闸 - Google Patents

换气扇用的防火闸 Download PDF

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Publication number
WO2012013138A1
WO2012013138A1 PCT/CN2011/077595 CN2011077595W WO2012013138A1 WO 2012013138 A1 WO2012013138 A1 WO 2012013138A1 CN 2011077595 W CN2011077595 W CN 2011077595W WO 2012013138 A1 WO2012013138 A1 WO 2012013138A1
Authority
WO
WIPO (PCT)
Prior art keywords
reserved
opening
bracket
fire damper
ventilating fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/077595
Other languages
English (en)
French (fr)
Inventor
龙敏
侯冠成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Ecology Systems Guangdong Co Ltd
Panasonic Corp
Original Assignee
Panasonic Ecology Systems Guangdong Co Ltd
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Ecology Systems Guangdong Co Ltd, Panasonic Corp filed Critical Panasonic Ecology Systems Guangdong Co Ltd
Priority to US13/809,254 priority Critical patent/US9533179B2/en
Publication of WO2012013138A1 publication Critical patent/WO2012013138A1/zh
Anticipated expiration legal-status Critical
Priority to US15/292,596 priority patent/US9868003B2/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/22—Fire-dampers with provision for the removal of an obstacle, e.g. rails, conveyors, before closing the opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/18—Sliding dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke

Definitions

  • the present invention relates to a ventilating fan, and more particularly to a fire damper for a ventilating fan. Background technique
  • a ventilating fan is a common ventilating device, as shown in Figures 1A and IB, which is a schematic view of a known ventilating fan.
  • the ventilating fan 100 generally includes: a frame 110 having an opening, a fan 111 disposed in the frame 110, and an electric component 112 for driving the fan, a joint 113 disposed at an air outlet of the fan 111 and connected to a duct communicating with the outside, and a ceiling 113
  • a mask 101 having an opening portion and communicating with the opening frame 110.
  • a fire-proof device that completely separates the air inlet of the ventilating fan from the indoor air is installed at the air inlet of the ventilating fan. That is, when a fire occurs, the fire prevention device cuts off the communication between the room and the outside (air circulation).
  • a fire damper 200 as a fire prevention device between the ventilating fan opening frame 110 of the above structure and the face mask 101.
  • the fire damper 200 is composed of a bracket 230 and a louver 210 provided with a flange 220 having a square frame shape inside.
  • the louver 210 is composed of a louver 211, a spring 212 provided on both sides of the venetian blind 211, and a tin alloy or the like.
  • the blinds 214 of the venetian blinds formed by the heat-fusing member 213 are formed, and the venetian blinds 211 of the louver 210 are attached to the upper side of the flange 220 in a folded state (that is, on the side of the ventilating fan opening frame 110).
  • the fire damper 200 is fixed to the ventilating fan opening frame 110, and the mask 101 is mounted on the fire damper 200.
  • the heat-fusing member 213 is blown, and the spring 212 is bounced to close the louver, thereby cutting off the communication with the outside at the flange 220.
  • the mask 101 of the ventilating fan 100 for example, the mask 101 is provided with a lighting fixture 102.
  • the power cord 103 for the lighting fixture 102 generally passes through the opening of the ventilating fan 100 and is then connected to the electrical component 112 of the ventilating fan 100, but if the fire damper 200 is disposed between the mask 101 and the ventilating fan 100, the louver 210 is closed. In order to prevent the power cord 103 from interfering with the louver 210, the power cord needs to be disposed away from the louver 210.
  • the present invention provides a fire damper for a ventilating fan, the fire damper being composed of a louver and a bracket provided with a flange, wherein the bracket is provided with a reserved opening, and the reserved opening is also opened. Or closed active parts.
  • the reserved pupils are respectively disposed on the upper end frame and the lower end frame of the bracket, and are arranged in pairs
  • the movable member is provided with an elongated protrusion groove, and a rim portion is disposed at a position corresponding to the reserved hole on one side of the protrusion groove; when the protrusion groove is installed at a position where the reserved hole is reserved, the power line is protruded
  • the slot passes through the reserved opening that is opened; when the protruding slot is staggered to the position where the opening is reserved, the edge blocks the position of the reserved opening.
  • One end of the movable component is provided with an engaging piece, and the engaging piece is stuck on the upper end or the lower end of the bracket; the other end of the movable component is provided with a screw hole, and the movable component is fixed on the bracket by a screw .
  • the reserved opening is disposed on the flange of the bracket.
  • the movable member is provided with a through slot, at least one side of the through slot is provided with an elongated screw hole; and along the length direction of the long screw hole, a block is arranged at an upper portion of the long screw hole.
  • the invention has the advantage that the parts can be shared and the product cost can be reduced.
  • FIG. 1A and 1B are schematic views of a known technique
  • FIGS. 2A and 2B are schematic views showing the use of a reserved opening according to a first embodiment of the present invention
  • Figure 3 is a schematic view of a movable part according to a first embodiment of the present invention.
  • Figure 6 is a schematic view of a movable part according to a second embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a second embodiment of the present invention without using a reserved pupil. detailed description
  • the fire damper 200 for the ventilating fan 100 is composed of a louver (not shown) and a bracket 230 provided with a flange 220.
  • the bracket 230 is divided into an upper end frame 231 and a lower end frame 232 and formed into a square structure.
  • the flange 220 is located on the inner side of the intersection of the upper and lower ends of the square structure bracket 230, and the flange 220 is sandwiched by the bracket 230.
  • the shutters (not shown) are located in the space enclosed by the flange 220 described above.
  • the reserved openings 301 and 302 are respectively disposed on the upper end frame 231 and the lower end frame 232 of the bracket, and are disposed in pairs.
  • the so-called reservation means that the opening is not completely cut, and the opening is not completely cut by setting the pinhole line structure (perforation line).
  • FIG. 3 is a schematic view of a movable member according to a first embodiment of the present invention.
  • the movable member 400 is an integrally formed member, and one end is provided with an engaging piece 410, and the engaging piece 410 is caught in the
  • the lower end frame 232 of the bracket 230 is disposed; the other end of the movable member 400 is provided with a first screw hole 420, and the movable member 400 can be fixed to the bracket 230 by screws; the middle portion of the movable member 400 is provided with an elongated protrusion groove 430.
  • a position 440 is provided at a position on one side of the protrusion groove 430 corresponding to the reserved openings 301 and 302, and the width of the edge portion 440 is slightly larger than the width of the reserved openings 301 and 302.
  • the first screw hole 420 and the edge portion 440 are respectively located on both sides of the protrusion groove 430.
  • a second screw hole 421 is provided on the edge portion 440 at a position away from the reserved opening 302 for reinforcing the movable member 400 to be fixed to the bracket 230.
  • the ventilating fan 100 uses a mask with an inductor or illumination
  • the power line 330 of the device or illumination passes through the reserved openings 301 and 302 that are filled, and the power line 330 fills the path formed by the reserved openings 301 and 302 on the bracket 230 being opened, and is passed through the movable member 400 described above.
  • the power cord 330 is fixed to the fire brake bracket, and the elongated projection slot 430 encloses the power cord 330 between the positions of the reserved openings 301 and 302, thereby preserving the passage formed by the openings 301 and 302 being opened. It is completely closed.
  • the fire shutter 200 louver (not shown) is closed, the air vent of the ventilating fan is completely isolated from the room, that is, it can be replaced The air fan cannot breathe in the air in the room.
  • FIG. 4 is a schematic view of the first embodiment of the present invention without using a reserved opening.
  • the reserved opening 301 may not be opened.
  • the protruding grooves 430 of the movable member 400 can be staggered to reserve the positions of the openings 301 and 302, and the edge portion 440 is aligned with the positions of the reserved openings 301 and 302.
  • the edge portion 440 is used to seal the passage formed by the opening openings 301 and 302 being opened, and the second screw hole 421 is located at a position between the reserved openings 301 and 302.
  • the movable member 400 is fixed to the bracket 230 by screwing the first screw hole 420 and the second screw hole 421 on the movable member 400.
  • the fire damper 200 louver (not shown) is closed, the air vent of the ventilating fan is completely isolated from the room, which makes it impossible for the ventilating fan to suck into the indoor air.
  • the width of the edge portion 440 is greater than the width of the reserved pupils 301 and 302 in order to facilitate the edge portion 440 to block the reserved openings 301 and 302.
  • the present invention is not limited to the use of the edge portion 440 which is slightly larger than or equal to the width of the reserved openings 301 and 302.
  • the movable part of the present invention can also employ two screw holes instead of elongated screw holes.
  • the present invention can not provide corresponding screw holes on the bracket, because in general, the screws can be directly screwed onto the metal thin-walled bracket as long as the screws are hardened.
  • Figure 5 is a schematic view showing the use of a reserved opening according to a second embodiment of the present invention
  • Figure 6 is a schematic view showing a movable member of a second embodiment of the present invention.
  • the reserved opening 303 is provided on the flange 220 of the bracket 230.
  • the movable member 500 is an integrally formed member, and is provided with a through slot 510 through which a power cord is inserted, and one side of the through slot 510 is provided with a long screw hole 520; along the length of the elongated screw hole 520 In the direction, a stopper 530 is provided at a lower portion of the elongated screw hole 520.
  • the size of the blocking portion 530 is larger than the reserved opening 303.
  • the ventilating fan 100 uses a mask with an inductor or illumination, it is only necessary to open the reserved opening 303 on the bracket flange 220 along the above-mentioned pinhole line, and then pass the inductor or the illumination power cord 330.
  • the power supply line 330 fills the passage formed by the opening in the bracket flange 220, and the power cord 330 is fixed on the bracket 230 through the through slot 510 of the movable member 500, thereby being reserved.
  • the passage formed by the opening 303 after being opened is completely closed.
  • the fire shutter 200 louver (not shown) is closed, the suction fan U of the ventilating fan is completely isolated from the room, that is, the ventilating fan cannot be sucked into the indoor air.
  • FIG. 7 is a schematic illustration of a second embodiment of the present invention without the use of reserved openings.
  • the reserved opening 303 may not be opened. However, if the reserved opening 303 has been opened, the through slot 510 of the movable member 500 can be staggered to reserve the position of the opening 303, so that the blocking portion 530 is aligned with the reserved opening 303, thereby sealing the reserved opening.
  • the hole 303 is opened and the passage formed, and the screw member 520 is passed through the long screw hole 520 on the movable member 500 to fix the movable member 500 to the bracket 230.
  • the fire damper 200 louver (not shown) is closed, the air vent of the ventilating fan is completely isolated from the room, which makes it impossible for the ventilating fan to inhale the air in the room.
  • the width and length of the blocking portion 530 are greater than the width and length of the reserved opening 303, so that the blocking portion 530 blocks the reserved opening 303.
  • the present invention is not limited to the use of the stopper 530 which is slightly larger than or equal to the size of the reserved opening 303.
  • the portion of the through slot 510 of the movable member 500 can serve as a positioning block for the venetian blind, that is, a portion that collides when the louver is closed, because the through slot 510 exists regardless of whether or not the reserved opening is used, and the position of the louver to be closed is not changed. There is no need to change the spring or the like, so that parts can be shared.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air-Flow Control Members (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

本发明提供一种换气扇用的防火闸，防火闸由百叶窗和设有法兰的支架所组成，在上述支架上设有预留开孔，还设有使预留开孔打开或关闭的活动部件。本发明的优点在于可以共用部品。

Description

换气扇用的防火闸 技术领域
本发明是关于一种换气扇， 特别是关于一种换气扇的防火闸。 背景技术
换气扇是一种常见的换气设备， 如图 1A、 IB所示， 为公知的换气扇 示意图。 换气扇 100通常包括： 设有开口的框架 110、 设置于框架 110内 的风机 111和驱动上述风机的电气部件 112、 设置于风机 111出风口并与 连通室外的管道相连接的接头 113以及设置于天花板 116开口部并与开口 框架 110相连通的面罩 101。
然而， 根据各个国家及地区的法规要求， 规定要在换气扇的吸风口安 装使换气扇的吸风口与室内几乎完全隔离的防火装置。 即火灾时， 防火装 置切断室内与室外的连通 （空气流通）。
因此， 需要在上述结构的换气扇开口框架 110和面罩 101之间设置作 为防火装置的防火闸 200。
该防火闸 200由设有内部形成四角框状的法兰 220的支架 230和百叶 窗 210所组成， 上述百叶窗 210由百叶窗帘 211、 设置于百叶窗帘 211的 两侧的弹簧 212、 由锡合金等的热熔断部件 213所形成的百叶窗帘的固定 夹 214所组成， 上述百叶窗 210的百叶窗帘 211以折叠的状态安装于法兰 220的上方（即靠换气扇开口框架 110侧）。上述防火闸 200固定于上述换 气扇开口框架 110上， 面罩 101安装于防火闸 200上。
并且， 当发生火灾等情况时， 热熔断部件 213会熔断， 弹簧 212弹开 将百叶窗关闭，从而在法兰 220部切断与室外的连通。但是，在换气扇 100 的面罩 101上， 例如面罩 101上装有照明器具 102。 该照明器具 102用的 电源线 103—般穿过换气扇 100的开口部， 然后再与换气扇 100的电气部 件 112相连接，但如果在面罩 101和换气扇 100之间设置防火闸 200的话， 百叶窗 210关闭时， 为使电源线 103不与百叶窗 210相干涉， 电源线需要 避开百叶窗 210而设置。
也就是说， 像带照明器具的面罩那样， 通过电源线与换气扇相连接的 面罩和一般的没有上述电源线的面罩之间， 不但存在无法共用防火闸， 而 且存在成本高的课题。 发明内容
本发明的目的在于提供一种换气扇的防火闸， 能同时对应上述两种情 况并能满足法规要求。
为实现上述目的， 本发明提供一种换气扇用的防火闸， 防火闸由百叶 窗和设有法兰的支架所组成， 在上述支架上设有预留开孔， 还设有使预留 开孔打开或关闭的活动部件。
所述的预留幵孔分别设置于支架的上端框体和下端框体上， 成对设
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所述的活动部件设有长条形突起槽， 在该突起槽的一侧边对应预留开 孔的位置设有缘部； 当突起槽正对预留开孔的位置安装时， 电源线经突起 槽穿过被打通的预留开孔； 当突起槽错开预留开孔的位置安装时， 缘部挡 住预留开孔的位置。
所述的活动部件的一端设有卡合片， 卡合片卡在所述的支架的上端或 下端上； 活动部件的另一端设有螺丝孔， 通过螺丝将活动部件固定在所述 的支架上。
所述的预留开孔设置于所述的支架的法兰上。
所述的活动部件设有贯穿槽， 该贯穿槽的至少一侧边设有长条形螺丝 孔；沿所述的长条形螺丝孔的长度方向，在长条形螺丝孔的上部设有挡部； 当贯穿槽正对预留开孔的位置安装时， 电源线经贯穿槽穿过被打通的预留 开孔； 当贯穿槽错开预留开孔的位置安装时， 挡部挡住预留开孔的位置。
本发明的优点在于可以共用部品， 降低产品成本。 附图说明
图 1A、 IB为公知技术示意图；
图 2A、 2B为本发明第一实施例的使用预留开孔的示意图；
图 3为本发明第一实施例的活动部件的示意图；
图 4为本发明第一实施例的不使用预留幵孔的示意图； 图 6为本发明第二实施例的活动部件的示意图；
图 7为本发明第二实施例的不使用预留幵孔的示意图。 具体实施方式
图 2 A、 2B为本发明第一实施例的使用预留开孔的示意图。如图所示， 换气扇 100用的防火闸 200由百叶窗 （图中未示）和设有法兰 220的支架 230所组成，支架 230分为上端框体 231和下端框体 232并形成方形结构， 法兰 220位于方形结构支架 230上下端相交的内侧四周， 法兰 220被支架 230所夹。 百叶窗 （图中未示） 位于上述法兰 220所围成的空间内。
预留开孔 301和 302分别设置于支架的上端框体 231和下端框体 232 上， 为成对设置。 所谓的预留是指开孔不完全切开， 通过设置针孔线结构 (齿孔线） 使开孔形成未完全切开状态。
图 3是本发明第一实施例的活动部件的示意图， 如图 3、 图 2B所示， 活动部件 400是一体成形的部件， 一端设有卡合片 410， 卡合片 410卡在 所述的支架 230的下端框体 232上； 活动部件 400的另一端设有第一螺丝 孔 420， 可以通过螺丝将活动部件 400固定在支架 230上； 活动部件 400 的中部设有长条形突起槽 430，在该突起槽 430的一侧边对应预留开孔 301 和 302的位置设有缘部 440， 该缘部 440的宽度略微大于预留开孔 301和 302的宽度。 上述的第一螺丝孔 420和缘部 440分别位于突起槽 430的两 侧。 还可以如图 2B所示， 在缘部 440上避开预留开孔 302的位置设置第 二螺丝孔 421， 用于加强活动部件 400固定在支架 230上。
如图 2A、 图 2B、 图 3所示， 通过上述结构， 当换气扇 100使用带感 应器或照明的面罩时，只需沿针孔线将预留开孔 301和 302打通形成通路， 然后将感应器或照明的电源线 330穿过被打通的预留开孔 301和 302， 电 源线 330填充了支架 230上的预留开孔 301和 302被打通后形成的通路， 并通过上述活动部件 400将电源线 330固定在防火闸支架上， 此时长条形 突起槽 430包住位于预留开孔 301和 302位置之间的电源线 330， 由此预 留开孔 301和 302被打通后形成的通路被完全封闭。 当防火闸 200百叶窗 (图中未示） 关闭时， 换气扇的吸风口就与室内完全被隔离， 即可以使换 气扇无法吸入室内的空气。
图 4为本发明第一实施例的不使用预留开孔的示意图， 如图 4、 图 3 所示， 当换气扇 100使用不带感应器或照明的面罩时， 可以不用打通预留 开孔 301和 302。 但如果预留开孔 301和 302己经被打通， 则可以使活动 部件 400的突起槽 430错开预留开孔 301和 302的位置， 使缘部 440对准 预留开孔 301和 302的位置， 从而利用缘部 440封住预留开孔 301和 302 被打通后形成的通路， 此时第二螺丝孔 421位于预留开孔 301和 302之间 的位置。 再用螺丝穿过活动部件 400 上的第一螺丝孔 420 和第二螺丝孔 421， 将活动部件 400固定在支架 230上。 当防火闸 200百叶窗 (图中未 不） 关闭时， 换气扇的吸风口与室内完全被隔离， 即可以使换气扇无法吸 入室内的空气。
本实施例中， 缘部 440的宽度大于预留幵孔 301和 302的宽度， 是为 了便于缘部 440挡住预留开孔 301和 302。 但本发明不限制可以使用略微 大于或者等于预留开孔 301和 302宽度的缘部 440。
本发明的活动部件也可以采用两个螺丝孔， 而不是长条形的螺丝孔。 另外， 本发明可以不在支架上设对应的螺丝孔， 因为通常情况下， 只要用 力拧螺丝， 都能将螺丝直接拧在金属薄壁的支架上。
图 5为本发明第二实施例的使用预留开孔的示意图； 图 6是本发明第 二实施例的活动部件的示意图。 如图 5、 图 6所示， 与第一实施不同之处 在于预留开孔 303设置于支架 230的法兰 220上。活动部件 500是一体成 形的部件， 设有供电源线穿入的贯穿槽 510， 该贯穿槽 510的一侧边设有 长条形螺丝孔 520 ; 沿所述的长条形螺丝孔 520的长度方向， 在长条形螺 丝孔 520的下部设有挡部 530。 挡部 530的尺寸比预留开孔 303要大。
通过上述结构， 当换气扇 100使用带感应器或照明的面罩时， 只需 沿上述的针孔线将支架法兰 220上的预留开孔 303打通， 然后将感应器或 照明的电源线 330穿过被打通的预留开孔 303， 电源线 330填充支架法兰 220上的开孔所形成的通道， 并通过活动部件 500的贯穿槽 510将电源线 330固定在支架 230上， 由此预留开孔 303被打通后形成的通路被完全封 闭。 当防火闸 200百叶窗 （图中未示） 关闭时， 换气扇的吸风 U与室内完 全被隔离， 即可以使换气扇无法吸入室内的空气。 图 7为本发明第二实施例的不使用预留开孔的示意图。 如图 7、 图 6 所示， 当换气扇 100使用不带感应器或照明的面罩时， 可以不用打通预留 开孔 303。 但如果预留开孔 303已经被打通时， 可以使活动部件 500的贯 穿槽 510错开预留开孔 303的位置，使挡部 530对准预留开孔 303的位置， 从而封住预留开孔 303被打通后形成的通路， 再用螺丝穿过活动部件 500 上的长条形螺丝孔 520，将活动部件 500固定在支架 230上。当防火闸 200 百叶窗 （图中未示） 关闭时， 换气扇的吸风口与室内完全被隔离， 即可以 使换气扇无法吸入室内的空气。
本实施例中， 挡部 530的宽度和长度都大于预留开孔 303的宽度和长 度， 这是为了便于挡部 530挡住预留开孔 303。 但本发明不限制可以使用 略微大于或者等于预留开孔 303尺寸的挡部 530。
另外， 活动部件 500的贯穿槽 510部分可以作为百叶窗帘的定位块， 即百叶窗关闭时碰撞的部分， 因为无论是否使用预留开孔， 该贯穿槽 510 都存在， 既不用改变百叶窗关闭的位置， 也不用变更弹簧等， 从而可以实 现部品共用。

Claims

权 利 要 求
1、 一种换气扇用的防火闸， 防火闸由百叶窗和设有法兰的支架所组 成， 其特征在于： 在上述支架上设有预留开孔， 还设有使预留开孔打开或 关闭的活动部件。
2、 根据权利要求 1 所述的换气扇用的防火闸， 其特征在于： 所述的 预留开孔分别设置于支架的上端框体和下端框体上， 成对设置。
3、 根据权利要求 2所述的换气扇用的防火闸， 其特征在于- 所述的活动部件设有长条形突起槽， 在该突起槽的一侧边对应预留开 孔的位置设有缘部；
当突起槽正对预留开孔的位置安装时， 电源线经突起槽穿过被打通的 预留开孔；
当突起槽错开预留开孔的位置安装时， 缘部挡住预留开孔的位置。
4、 根据权利要求 3所述的换气扇用的防火闸， 其特征在于： 所述的 活动部件的一端设有卡合片， 卡合片卡在所述的支架的上端或下端上； 活 动部件的另一端设有螺丝孔， 通过螺丝将活动部件固定在所述的支架上。
5、 根据权利要求 1 所述的换气扇用的防火闸， 其特征在于： 所述的 预留开孔设置于所述的支架的法兰上。
6、 根据权利要求 1 所述的换气扇用的防火闸， 其特征在于： 所述的 活动部件设有贯穿槽， 该贯穿槽的一侧边设有长条形螺丝孔； 沿所述的长 条形螺丝孔的长度方向， 在长条形螺丝孔的上部设有挡部；
当贯穿槽正对预留开孔的位置安装时， 电源线经贯穿槽穿过被打通的 预留开孔；
当贯穿槽错开预留开孔的位置安装时， 挡部挡住预留开孔的位置。
PCT/CN2011/077595 2010-07-30 2011-07-26 换气扇用的防火闸 Ceased WO2012013138A1 (zh)

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US20130130613A1 (en) 2013-05-23
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