JP2008180431A - Outdoor hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor hood capable of removing dust attached to a filter without using wind pressure or outside wind of a ventilation fan and further without performing maintenance of the filter by an user. <P>SOLUTION: This outdoor hood is provided with a cylindrical portion 5 inserted into a duct 4 disposed in a wall 1 and communicating the inside 2 and the outside 3 of a room, a main body 8 disposed on an outer wall 6 and having an opening portion 6 approximately at its center, a hood 9 having an opening at its lower part, and the filter 10 and a shutter 11 disposed in the cylindrical portion 5, the shutter 11 is positioned at a windward side of the wind in the ventilating direction with respect to the filter 10, and rotatable on a shaft 12, and a hitting member 14 is disposed on a face at a filter 10 side, of the shutter 11, so that the hitting member 14 hits the filter 10 when the shutter 11 is in an opened state by pressure difference in the cylindrical portion caused by opening and closing of a door of the room to get rid of the dust attached to the face of the filter 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an outdoor hood for ventilation that is attached to a ventilation air passage to ventilate a building.

  In recent years, airtight houses have become commonplace for energy efficiency and comfort. As a result, the importance of ventilation is increased, and ventilation fans are installed in each room, and outdoor hoods are installed outdoors at the ventilation openings. Depending on the installation location, small insects may invade from the opening of the outdoor hood. In such locations, outdoor hoods with insect screens were installed. However, in the case of such an outdoor hood with an insect screen, there is a problem that when a ventilation fan or the like is operated for a long time, dust and insects accumulate on the insect screen for a long time, the insect screen is clogged, and the ventilation efficiency is lowered. It was. In addition, since the outdoor hood is installed at a high place and is not easily accessible, there is a problem that after the outdoor hood is installed, even if the insect screen is clogged, it cannot be cleaned manually. In order to solve such a problem, as shown in Patent Document 1, a vane plate is provided on the front surface of the filter, a brush is provided on each vane of the vane plate, the brush is rotated by wind force, and the filter is filtered by the brush. There is known a method for removing dust and insects adhering to (see, for example, Patent Document 1).

  However, since such a vent cover material has a structure in which the brush contacts the filter and drops dust, in reality, the friction due to this contact is large, and in order to rotate the brush, wind force larger than this friction force is generated. is necessary. When this wind power is driven by a ventilation fan, the power of the ventilation fan that generates wind power must be increased, and the power of the ventilation fan is used to rotate this brush. Since extra power is consumed by the ventilation fan for the amount of power to be rotated, there is a problem in that ventilation efficiency and energy efficiency are lowered. In addition, when trying to use this wind power with the outdoor wind generated outside, there is a problem that it can be realized only in a windy area or place.

  The configuration will be described below with reference to FIG.

As shown in the figure, a cover plate 102 provided with an opening 101 in a ventilation opening provided on the outer periphery of a building, a filter 103 fixed to the cover plate 102 and covering the opening 101, and a blade adjacent to the filter 103 A blade 104 is provided, and a blade 105 is rotatably supported on the blade plate 104. A brush 106 is provided on each blade 105, and the brush 106 is placed on the filter 103 as the blade 105 rotates by wind pressure. There was a vent cover material with a sliding structure.
Japanese Utility Model Publication No. Sho 63-11507 (FIG. 1)

  Such a conventional vent cover or outdoor hood is deposited on the filter 103 by rotating the blade 105 by the wind pressure of the ventilation fan and sliding the brush 106 provided on the blade 105 on the surface of the filter 103. It is structured to drop dust.

  However, since the brush 106 for sweeping off dust slides on the filter 103, a frictional force is generated between the brush 106 and the filter 103. Therefore, the blade 105 is rotated by a wind pressure larger than this frictional force. A ventilation fan is required. In addition, since the blade 105 is rotated using the wind energy of the ventilation fan, the energy used for exhaust of the ventilation fan is used by the amount of power for rotating the blade 105, so the power consumption of the ventilation fan increases, The exhaust efficiency also decreases. As a result, there is a problem that the user (resident) is burdened with electric power. On the other hand, even when trying to rotate the blade 105 by the outdoor wind generated outside, the brush 106 and the filter 103 have a frictional force, so a considerably strong external wind is required and the wind is not installed. In some cases, there was a problem that the effect could not be exhibited.

  This invention solves the said subject, and it aims at providing the outdoor hood which can remove the dust adhering to a filter, without a user maintaining the filter, even if it does not use the wind pressure or the outside wind of a ventilation fan. To do.

  In order to achieve the above object, the outdoor hood of the present invention is provided in a wall and inserted into a duct that allows communication between the room and the outside, a main body that is attached to the outer wall and has an opening in the center, A hood provided so as to cover the main body and having an opening at the bottom, a filter and a shutter are provided in the cylindrical portion, the shutter is positioned on the windward side in the ventilation direction with respect to the filter, and the shutter is It has a structure that can rotate around the center, and a bumping member that strikes the filter is provided on the filter-side surface of the shutter, and the shutter is opened due to the pressure fluctuation difference in the cylinder caused by opening and closing the door of the room When this happens, the impacting member impacts the filter, impacting the filter, and removing the dust adhering to the surface of the filter. .

  By this means, the striking member provided on the shutter impacts the filter due to pressure fluctuation caused by opening and closing of the door, etc., so that the dust adhering to the filter is automatically dropped and the filter is not automatically clogged. Therefore, it is possible to provide an outdoor hood that eliminates the need for human maintenance to periodically clean the filter, and makes it possible to maintain the filter.

  In another means, the striking member has a shape in which the contact with the filter is a point contact or a partial contact.

  By this means, the striking member provided on the shutter concentrates on a part of the filter due to pressure fluctuation caused by opening and closing of the door and the like, and the dust adhering to the filter is automatically dropped, and the filter is removed. Since it can be automatically kept in a state where it is not clogged, there is no need for human maintenance to periodically clean the filter, and maintenance of the filter can be realized.

  Another means is that the striking member is shaped so that the contact with the filter is almost a line contact.

  By this means, the striking member provided on the shutter impacts near the center line of the filter due to pressure fluctuations caused by opening and closing of the door, etc., so that the dust adhering to the filter is automatically dropped and the filter is clogged. Since the filter can be automatically kept in a non-operating state, there is no need for human maintenance to regularly clean the filter, and the filter can be maintained free of charge.

  Further, another means is provided such that the filter eye structure intersects the propagation line with one or a plurality of propagation lines that start from the hitting projections on the filter surface that come into contact with the striking members and that travel in the outer circumferential direction. The structure is formed by one or a plurality of intersecting lines, and the impact from the hitting projection of the filter can be propagated in the outer circumferential direction.

  By this means, the impact applied by the impacting member to the impacted projecting portion of the filter is effectively propagated along the propagation line to the outer periphery of the filter, so that the entire surface of the filter is shaken by the impact. Therefore, dust on the entire surface of the filter can be removed.

  Another means is that the intersection line is constituted by a propagation line.

  By this means, the impact applied by the striking member to the hitting portion of the filter is effectively propagated along the propagation line to the propagation line between the outer periphery of the filter and the propagation line in the outer peripheral direction, thereby easily filtering the filter. Since the entire surface portion of the filter is shaken by the impact, dust on the entire surface of the filter can be removed.

  In addition, the other means is formed such that a plurality of propagation lines that start from the hitting protrusion and go in the outer circumferential direction intersect.

  By this means, the impact applied by the impacting member to the impacted portion of the filter is effectively propagated to the outer periphery of the filter along the propagation line, so that the entire surface of the filter is easily shaken by the impact. Therefore, dust on the entire surface of the filter can be removed.

  Further, the other means is provided with a hook portion extending in the left-right direction on the surface of the shutter, and the hitting member has a receiving portion slidable in the left-right direction along the hook portion, and the hitting member is the shutter. It is set as the structure which can move along a hook part on the surface of this.

  By this means, the impacting member moves randomly in the left-right direction, so that a wide range of dust on the filter surface can be removed.

  In another means, the cylindrical portion is composed of a main body fixing cylindrical portion and an indoor side connecting cylindrical portion, and a shutter and a filter are disposed inside the indoor side connecting cylindrical portion, and the indoor side connecting cylindrical portion and the shutter The portion formed by the filter is used as a filter unit, and the main body fixing tube portion and the filter unit are detachable, and the filter unit is connected to the main body fixing tube portion so that the connecting direction of the filter unit portion is The structure is such that either the filter side cylinder end or the shutter side cylinder end can be connected.

  By this means, it is possible to provide an outdoor hood that can be used for both exhaust and air supply by simply changing the direction of the filter unit.

  According to the outdoor hood of the present invention, the impact member provided on the shutter impacts the filter due to pressure fluctuations caused by opening and closing of the door, etc., so that the dust adhering to the filter is automatically dropped, and the filter is visible. Since the filter can be automatically kept in a clogged state, it is possible to provide an outdoor hood that eliminates the need for human maintenance to periodically clean the filter and can maintain the filter.

  Moreover, since the impact member is point contact or partial contact with the filter, it is possible to provide an outdoor hood capable of giving a strong impact to the filter and strongly dropping dust attached to the filter.

  In addition, since the striking member is substantially in line contact with the filter, an outdoor hood that can impact the entire surface of the filter and efficiently remove dust attached to the entire surface of the filter can be provided.

  In addition, since the impact applied to the hitting portion of the filter by the hitting member effectively propagates to the outer periphery of the filter along the propagation line, the entire surface portion of the filter is shaken by the impact, An outdoor hood that can remove dust from the entire surface of the filter can be supplied.

  In addition, the other means can provide an outdoor hood that can easily shake all of the filter eyes and efficiently remove dust adhering to the entire surface of the filter by forming the intersecting lines with propagation lines.

  In addition, the other means is that the plurality of propagation lines extending in the outer circumferential direction from the hitting projection as a starting point intersect, so that all of the filter eyes can be easily and efficiently vibrated, and the entire filter surface can be vibrated. It is possible to provide an outdoor hood capable of efficiently removing attached dust.

  In addition, an outdoor hood capable of removing dust over a wide range of the filter surface can be supplied by the striking member moving randomly in the left-right direction.

  Also, an outdoor hood that can be used for both exhaust and air supply can be provided by simply changing the direction of the filter unit.

  An outdoor hood according to claim 1 of the present invention includes a cylindrical portion that is provided in a wall and is inserted into a duct that allows communication between the room and the outside, a main body that is attached to the outer wall and has an opening at a substantially center, A hood provided so as to cover the main body and having an opening at the bottom, a filter and a shutter are provided in the cylindrical portion, the shutter is located on the windward side in the ventilation direction with respect to the filter, and the shutter has an axis It has a structure that can rotate around the center, and a shocking member that strikes the filter is provided on the filter-side surface of the shutter, so that the shutter is opened due to the pressure fluctuation difference in the cylindrical part caused by opening and closing of the door of the room. The impact struck member impacts the filter when it becomes an impact, and the outdoor hood can drop the dust adhering to the surface of the filter. The impacting member provided on the shutter impacts the filter due to pressure fluctuation caused by opening and closing, etc., so that the dust adhering to the filter is automatically dropped, and the filter can be automatically kept in a clogged state. Therefore, there is an effect that it is possible to provide an outdoor hood capable of realizing maintenance of the filter by eliminating the labor of maintenance by a person in order to periodically clean the filter.

  In addition, the striking member has a shape in which contact with the filter is point contact or partial contact, and the striking member provided on the shutter is concentrated on a part of the filter due to pressure fluctuation caused by opening / closing of the door. Therefore, it has an effect that dust is applied to the filter and the dust attached to the filter is automatically dropped.

  In addition, the striking member has a shape in which the contact with the filter is almost a line contact, and the striking member provided on the shutter impacts near the center line of the filter due to pressure fluctuation caused by opening and closing of the door. And the dust adhering to the filter is automatically dropped.

  In addition, the structure of the eye of the filter is one or a plurality of propagation lines starting from a hitting projection portion of the filter surface that comes into contact with the striking member and extending in the outer peripheral direction, and one or more propagation lines provided to intersect the propagation lines. The structure is composed of a plurality of intersecting lines, and the impact from the hitting part of the filter can be propagated in the outer circumferential direction. The impact given by the hitting member to the hitting part of the filter is along the propagation line. By effectively propagating to the outer periphery of the filter, the entire surface of the filter is shaken by the impact, so that dust on the entire surface of the filter can be removed.

  In addition, the intersecting line is composed of propagation lines, and the impact applied by the striking member to the hitting part of the filter along the propagation lines also on the propagation lines between the outer periphery of the filter and the propagation lines in the outer peripheral direction. By effectively propagating, the entire surface of the filter is easily shaken by an impact, and dust can be removed from the entire surface of the filter.

  In addition, a plurality of propagation lines extending in the outer peripheral direction from the hitting projection as a starting point intersect, and the impact applied by the hitting member to the hitting projection of the filter is filtered along the propagation line. By effectively propagating to the outer periphery of the filter, the entire surface of the filter is easily shaken by impact, and dust can be removed from the entire surface of the filter.

  Further, a hook portion extending in the left-right direction is provided on the surface of the shutter, and the hitting member has a receiving portion slidable in the left-right direction along the hook portion, and the hitting member is on the surface of the shutter, It is configured to be able to move along the hook portion, and dust in a wide range of the filter surface can be dropped by the striking member moving randomly in the left-right direction.

  Further, the cylinder part is composed of a main body fixing cylinder part and an outdoor connection cylinder part, a shutter and a filter are arranged inside the indoor side connection cylinder part, and formed by the indoor connection cylinder part, the shutter and the filter. The filter unit is used as a filter unit, and the main body fixing cylinder part and the filter unit are detachable, and the filter unit is connected to the main body fixing cylinder part at the end of the filter side cylinder of the filter unit or the shutter. The structure can be used at either end of the side tube, and an outdoor hood that can be used for both exhaust and air supply can be provided by simply changing the direction of the filter unit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 5, a cylindrical portion 5 provided in the wall 1 and inserted into a duct 4 communicating the interior 2 and the exterior 3, and an opening 7 is attached to the exterior wall 6 and substantially in the center. A main body 8, a hood 9 provided so as to cover the main body 8 and having an opening below, and a filter 10 and a shutter 11 are provided in the cylinder portion 5. Further, the shutter 11 is structured to be rotatable about a shaft 12, and a striking member 14 for striking the filter 10 is provided on the filter side surface 13 of the shutter 11. When the shutter 11 is opened due to a pressure fluctuation difference in the cylindrical portion 5 caused by opening and closing of the door of the room, the impacting member 14 impacts the filter 10 to give an impact to the filter 10. It is obtained by the outdoor hood that can clean off dirt adhering to the surface of the 0.

  In the above configuration, after the outdoor hood is installed in the house, when the door of the room in which the outdoor hood is installed is opened and closed, the pressure in the room 2 changes instantaneously. Since the room 2 communicates with the duct 4, pressure fluctuations instantaneously occur in the duct 4.

  For example, when an outdoor hood is installed for exhaust, the outdoor hood is installed on the outer wall as shown in FIG. For example, if the door is a door that opens and closes in the direction of the room, the pressure in the room instantaneously increases when the door is opened. Conversely, when the door is a door that opens and closes in the outdoor direction, the pressure in the room rises momentarily when the door is closed. When the pressure in the room rises momentarily, a pressure wave from the indoor 2 side to the outdoor 3 side is instantaneously generated inside the duct 4, and the shutter 11 inside the cylindrical portion 5 rotates about the shaft 12. Then, the shutter will be released with great force. Since this pressure wave is instantaneous, when the shutter reaches the maximum open state, the shutter 11 thereafter returns to the original position. At this time, if the ventilation fan (for exhaust) is in a stopped state, the shutter is closed as it was in the original state, while if the ventilation fan is in operation, a position slightly lowered from the maximum open state. Thus, the weight of the shutter 11 and the wind pressure of the ventilation fan are held at a balanced position. When the shutter 11 is fully opened by the pressure wave, the striking member 14 provided on the shutter strikes the filter 10 vigorously, so that the dust adhering to the filter 10 is dropped by the impact. Thus, the dust adhering to the filter 10 is automatically removed by opening and closing the door.

  When the outdoor hood is installed for supplying air, the outdoor hood is installed on the outer wall as shown in FIG. In this case, for example, when the door is a door that opens and closes in the direction of the room, the pressure in the room instantaneously decreases when the door is closed. Conversely, when the door is a door that opens and closes in the outdoor direction, the pressure in the room instantaneously drops when the door is opened. When the pressure in the room decreases instantaneously, a pressure wave is generated instantaneously from the outdoor 3 toward the indoor 2 in the duct 4. In this case as well, the shutter 11 rotates about the shaft 12 and opens the shutter vigorously. Since the pressure wave in this case is also instantaneous, when the shutter 11 reaches the maximum open state, the shutter 11 thereafter returns to the original position. At this time, if the ventilation fan (for air supply) is in a stopped state, the shutter 11 is closed as it was in the original state, and if the ventilation fan is in the air supply operation, the position is slightly lowered from the maximum open state. Thus, the weight of the shutter 11 and the wind pressure of the ventilation fan are held in a balanced state. Also in this case, when the shutter 11 is fully opened by the pressure wave, the striking member 14 provided on the shutter 11 strikes the filter 10 vigorously, so that the dust attached to the filter 10 is dropped by the impact. It becomes. Thus, the dust adhering to the filter 10 is automatically removed by opening and closing the door.

  Further, even if the striking member 14 has a shape that is substantially point contact or partial contact as shown in FIG. 3, the tip of the shutter 11 projects into the shape of a locus at the time of opening and closing as shown in FIG. As the shape of the striking portion 14a that is substantially in line contact with the filter 10 during the opening / closing operation of 11, the impact may be applied to the filter 10 as long as it can be impacted. When the striking member has a shape in which the contact with the filter 10 is a point contact or a partial contact, the striking member 14 provided on the shutter 11 is caused by the pressure fluctuation caused by opening / closing of the door. The dust attached to the filter 10 can be strongly dropped by intensively impacting on a part thereof, and the striking portion 14a of the striking member is almost line-contacted with the filter 10. In the case of a touching shape, the impact projection 14a provided on the shutter 11 impacts the vicinity of the center line of the filter 10 due to pressure fluctuation caused by opening and closing of the door, and adheres to the entire surface of the filter 10. Dust can be efficiently removed.

  As described above, according to the outdoor hood of Embodiment 1 of the present invention, the impact member provided on the shutter gives an impact to the filter due to the pressure fluctuation caused by the opening and closing of the door. Since the filter 10 is automatically dropped and can be automatically kept in a state where the filter 10 is not clogged, there is no need for a person to perform maintenance for periodically cleaning the filter 10, and maintenance of the filter can be realized. Outdoor food can be provided.

(Embodiment 2)
As shown in FIG. 6, the structure of the eye 15 of the filter 10 a has one or a plurality of propagation lines 18 starting from the hitting projection 16 on the surface of the filter 10 a that contacts the hitting member 14, and toward the outer periphery 17. A structure formed by one or a plurality of intersecting lines 19 provided so as to intersect with the propagation line 18, or one or a plurality of propagation lines 18 extending from the hitting projection 16 toward the outer periphery 17. The structure of the eye 15 is such that the impact from the hitting projection 16 of the filter 10a can propagate in the direction of the outer periphery 17.

  In the configuration described above, the structure of the filter eye 15 has a plurality of propagation lines 18 in the direction of the outer periphery 17 from the hit projection 16, which is a portion with which the hitting member 14 contacts, and intersects the propagation lines 18. The intersection line 19 constitutes the eye 15. The filter 10a can prevent insects larger than the eye 15 from entering the room 2. Further, when the ventilation fan is operated for a long time, dust adheres to the eyes 15 of the filter 10a. When the striking member 14 hits the hitting projection 16 of the filter 10a, the impact propagates from the hitting projection 16 along the plurality of propagation lines 18 in the direction of the outer periphery 17 of the filter 10a. The impact from 14 spreads throughout the filter 10a. Thus, since this impact spreads over the entire surface of the filter 10a, dust on the entire surface of the filter 10a can be removed.

  Further, as shown in FIG. 7, the filter 10 b starts from the hitting protrusion 16, and starts from the propagation line 18 a configured by a curve from the center toward the outer periphery 17 like a spiral and the hitting protrusion 16. The eye 15a is configured so that the propagation line 18a that extends in the direction of the outer periphery 17 intersects, and the impact applied by the striking member to the hitting projection 16 of the filter 10b occurs along the propagation line 18a of the filter 10b. By effectively propagating also to the propagation line 18 between the outer periphery and the outer peripheral propagation line 18, the entire surface portion of the filter 10b is easily shaken by an impact, and dust on the entire surface of the filter 10b is dropped. Can do.

  In addition, as shown in FIG. 8, when the hitting protrusion 16a is in a line state due to the linear shape of the hitting member, the eye 15c of the filter 10c starts in the direction of the outer periphery 17 from the hitting protrusion 16a. The plurality of propagation lines 18b and the propagation lines 18c cross each other, and the impact applied by the striking member to the hitting projection 16a of the filter 10c is filtered along the propagation lines 18b and 18c. By effectively propagating to the outer periphery of the filter 10c, the entire surface of the filter 10c is easily shaken by an impact, and dust on the entire surface of the filter 10c can be removed.

  7 and 8, even if the filter eyes are shaped as shown in FIG. 7 and FIG. 8, the impacting member gives an impact to the impacted portion of the filter, and the impact received by the impacted portion is filtered along the propagation line. There is no difference in the effect that the impact propagates in the outer circumferential direction of the filter and can be spread over the entire filter.

  As described above, according to the outdoor hood of the second embodiment of the present invention, the impact applied by the hitting member 14 to the hitting projection 16 of the filter 10 is effectively applied to the outer periphery 17 of the filter 10 along the propagation line 18. By propagating, the entire surface portion of the filter 10 is shaken by the impact, so that dust on the entire surface of the filter 10 can be dropped.

(Embodiment 3)
As shown in FIG. 9, a hooking portion 20 extending in the left-right direction is provided on the surface 13a of the shutter 11a, and the striking member 14b has a receiving portion 21 that can slide in the left-right direction along the hooking portion 20. The striking member 14b can move along the hooking portion 20 on the surface 13a of the shutter 11a.

  In the above-described configuration, the hooking portion 20 extending in the left-right direction on the surface 13a of the shutter 11a is assembled so as to be slidable with the receiving portion 21 of the hitting projection 14b, and hit by the pressure fluctuation caused by opening and closing the door. When the projecting member 14b hits the filter 10, a reaction force of impact is applied to the striking member 14b, and the striking member 14b moves randomly in the left or right direction when colliding with the filter 10. . The striking member 14b is impacted at a random position with respect to the filter 10 by the collision with the filter 10, so that the impact is applied over a wide range of the surface of the filter 10 without being impacted only at a specific position of the filter 10. Therefore, a wide range of dust on the surface of the filter 10 can be removed.

  As described above, according to the outdoor hood of Embodiment 3 of the present invention, the impacting member 14b randomly moves in the left-right direction, so that a wide range of dust on the surface of the filter 10 can be dropped.

(Embodiment 4)
As shown in FIGS. 10 and 11, the cylindrical portion 5 a is composed of a main body fixing cylindrical portion 22 and an indoor side connecting cylindrical portion 23, and the shutter 11 and the filter 10 are disposed inside the indoor side connecting cylindrical portion 23. The portion formed by the indoor connecting cylinder 23, the shutter 11 and the filter 10 is used as a filter unit 24. The main body fixing cylinder 22 and the filter unit 24 are detachable from each other, and the filter unit 24 Has a structure in which the connecting direction to the main body fixing cylinder 22 can be connected to either the filter side cylinder end 25 or the shutter side cylinder end 26 of the filter unit 24. The direction of the filter unit 24 is It can be used for both exhaust and supply by simply changing.

  In the above configuration, when the outdoor hood is used for exhaust, the connection state between the filter unit 24 and the main body fixing cylinder portion 22 is set so that the filter 10 inside the filter unit 24 is positioned on the outdoor 3 side. The end of the main body fixing cylinder 22 and the filter side cylinder end 25 of the filter unit 24 are fixed together and installed on the wall as an outdoor hood for exhaust.

  When the outdoor hood is used for air supply, the connection state between the filter unit 24 and the main body fixing cylinder portion 22 is set so that the shutter 11 inside the filter unit 24 is positioned on the outdoor 3 side. The end portion of the main body fixing cylinder portion 22 and the shutter side cylinder end portion 26 of the filter unit 24 are fixed together and installed on the wall as an outdoor hood for supplying air.

  Since the outdoor hood may be used for both exhaust and air supply, the installer can easily filter the outdoor hood during construction regardless of whether the ventilation fan is for exhaust or air supply. By simply changing the direction of the unit 24, an outdoor hood that can be used for both exhaust and air supply can be provided.

  As described above, according to the outdoor hood of Embodiment 4 of the present invention, it is possible to provide an outdoor hood that can be used in both cases of exhaust and air supply simply by changing the direction of the filter unit 24.

  The outdoor hood according to the present invention can be applied to an exhaust device, an air conditioner, and the like having a filter capable of preventing insects from entering.

Sectional drawing which shows the structure of the outdoor hood of Embodiment 1 of this invention. Sectional view showing the operation of the outdoor hood The perspective view which shows the structure of the part of the outdoor hood Sectional view showing the operation of the outdoor hood The perspective view which shows the structure of the part of the outdoor hood The front view which shows the filter of the outdoor hood of Embodiment 2 of this invention Front view showing the filter of the outdoor hood Front view showing the filter of the outdoor hood The perspective view which shows the components structure of the outdoor hood of Embodiment 3 of this invention. Sectional drawing which shows the structure of the outdoor hood of Embodiment 4 of this invention. Sectional view showing the configuration of the outdoor hood A perspective view showing a configuration of a conventional outdoor hood

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall 2 Room 3 Outdoor 4 Duct 5 Tube part 5a Tube part 6 Outer wall 7 Opening part 8 Main body 9 Hood 10 Filter 10a Filter 11 Shutter 11a Shutter 12 axis
13 surface 13a surface 14 hitting member 15 eyes 16 hitting protrusion 17 outer periphery 18 propagation line 19 crossing line 20 hooking part 21 receiving part 22 main body fixing cylinder part 23 indoor side connecting cylinder part 24 filter unit 25 filter side cylinder end part 26 Shutter side tube end

Claims (8)

A cylindrical portion that is provided in a wall and is inserted into a duct that allows communication between the room and the outside, a main body that is attached to the outer wall and has an opening in the approximate center, and is provided so as to cover the main body and has an opening below. And a filter and a shutter are provided in the cylinder, the shutter is positioned on the windward side of the wind in the ventilation direction with respect to the filter, and the shutter is configured to be rotatable about an axis. The filter-side surface is provided with a striking member for striking the filter, and when the shutter is opened due to a pressure fluctuation difference in the cylindrical portion caused by opening / closing of the room door, the striking member strikes the filter. An outdoor hood that can impact the filter and remove dust adhering to the surface of the filter. The outdoor hood according to claim 1, wherein the hitting member has a shape in which contact with the filter is point contact or partial contact. The outdoor hood according to claim 1, wherein the hitting member has a shape in which contact with the filter is substantially line contact. The structure of the eye of the filter is that one or more propagation lines extending in the outer peripheral direction starting from a hitting projection on the filter surface that contacts the hitting member, and one or more propagation lines provided to intersect the propagation line. The outdoor hood according to claim 1 or 2, wherein the structure is formed by intersecting lines and the eyes can propagate the impact from the hitting projection of the filter in the outer circumferential direction. The outdoor hood according to claim 4, wherein the intersection line is constituted by a propagation line. The outdoor hood according to claim 1, wherein the outdoor hood is formed such that a plurality of propagation lines extending from the hitting protrusion in the outer peripheral direction intersect each other. A hook part extending in the left-right direction is provided on the surface of the shutter, and the hitting member has a receiving part that can slide in the left-right direction along the hook part. The outdoor hood according to claim 1, wherein the outdoor hood is configured to be movable along. The cylinder part is composed of a main body fixing cylinder part and an outdoor connection cylinder part, a shutter and a filter are arranged inside the indoor connection cylinder part, and a part formed by the indoor connection cylinder part, the shutter and the filter The filter unit has a structure in which the main body fixing cylinder part and the filter unit can be attached and detached, and the filter unit is connected to the main body fixing cylinder part by connecting the filter side cylinder end of the filter unit or the shutter side cylinder. The outdoor hood according to claim 1, wherein the outdoor hood has a structure that can be used at either end, and can be used for both exhaust and air supply simply by changing the direction of the filter unit.

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