JP3041918U - Ventilation prevention vent - Google Patents

Abstract

(57) [Abstract] [Problem] Even when installed in a building of a solar system, it is possible to substantially completely block the blowing of air from the outside to maintain high airtightness and heat insulation and prevent the occurrence of dew condensation. And thus provide a blow-proof vent with a fire protection structure. A fire damper 80 and a check damper 42 are provided, and the wind from the outdoors is blocked by the check damper 42. These are attached as a unit. The structure of the check damper 42 is configured to operate when receiving a wind force of a predetermined value or more.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a blow-in preventive ventilation port, and more particularly, to a device for forcibly ventilating an attic in a summer with a highly insulated, highly airtight house, especially a solar circuit system with a double ventilation method using an electric fan. It relates to a blow-in preventive ventilation port suitable for mounting.

[0002]

[Prior art]

 Since the climate of Japan is hot and humid in the summer, traditional buildings are designed so that air is spread throughout the building to prevent decay of the building due to such an environment. It is designed to have good breathability.

However, in cold regions, on the contrary, it is necessary to take measures so that the cold outside air in winter is not taken in indoors as much as possible, and to improve the heating efficiency. It is necessary to improve cooling efficiency as part of energy conservation measures such as coolers. Therefore, in order to create a comfortable living environment, a highly insulating / highly airtight building has been developed that comprehensively surrounds the interior of the building with a heat insulating material to improve the heat insulation and airtightness of the building. , Especially in cold climates.

By the way, in such a building, the space at the top of the hut located at the top of the building becomes a hot air reservoir, and therefore it is necessary to ventilate this space especially in summer. Therefore, depending on the building, a forced fan is installed on the wall behind the hut. Such a forced fan opens the exhaust passage due to the flow of air from the inside to the outside of the room, and closes the exhaust passage when the fan stops.

[0005]

[Problems to be solved by the device]

 However, in general, forced fans in the attic space of buildings with solar circuit systems are operated in the summer and not in the winter. In addition, this type of forced fan that is normally used does not have sufficient airtightness.For example, when a strong wind accompanied by cold air blows in the winter, even a forced fan that is not in operation will have a gap. As a result, cold air outside will invade indoors, which not only lowers the heat insulation performance, but also may cause the formation of dew condensation, impairing the original function of the high heat insulation and airtight building. It was not desirable.

Further, when a fire occurs in the vicinity of a building, there is a possibility that smoke or sparks may enter from the exhaust passage due to the strong wind. In view of such a situation, the present invention can almost completely block the blowing of wind from the outside to maintain high airtightness and high heat insulation, prevent the occurrence of dew condensation, and, by extension, provide a fireproof structure. The purpose is to provide a combined blow prevention vent.

[0007]

[Means for Solving the Problems]

 The present invention has been devised in order to achieve the above-mentioned problems and objects in the prior art. The blow-in prevention ventilation opening of the present invention is installed on the outer wall surface of a building and is sent from the inside. With respect to the incoming wind, the exhaust passage is open and air can be discharged to the outside, while the exhaust passage is closed against the wind trying to blow in from the outside and the air from the outside A ventilation member for preventing blow-in of air, which is a casing formed from a tubular member arranged so as to penetrate the wall of the building and a hood portion connected to the tubular member and arranged on the outdoor side. In addition to being configured, the above-mentioned hood section is provided with a check damper that opens only when there is an air flow from the inside of the room, and further, when the temperature exceeds a predetermined temperature, the fuse member is blown out. The indoor and outdoor sky It is characterized in that it is provided with a fireproof damper for blocking the air passage.

With such a configuration, when the wind blown from the outside tries to enter the indoor through the exhaust passage, the check damper blocks the intrusion. This also prevents the occurrence of dew condensation in winter. Further, when the temperature exceeds a predetermined temperature, the fuse member is automatically melted and the exhaust passage is blocked, so that the fireproof structure is exhibited.

[0009]

[Embodiment of the invention]

 Further, in the blow-in prevention damper of the present invention, the structure can be made compact by installing the check damper in the hood portion projecting outdoors.

Further, it is preferable that a lid that opens and closes the exhaust passage of the hood is installed so as to be openable and closable. When strong winds blow, this lid is naturally closed using its power. For example, a blade member that is swung by the force of the wind is installed on the lid body, and when the blade member swings, the support arm member rotates, and the lid body opens and closes based on the rotation operation. The exhaust passage portion is blocked or opened.

In addition, if a fire-proof damper configured to be in a closed state at a predetermined temperature, for example, 70 ° C. or more is provided on the indoor side of the check damper in the hood, a flame may be provided. And can block smoke.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing a building according to a first embodiment to which the blow-in prevention ventilation opening of the present invention is applied, and FIG. 2 is an enlarged view of a main part of FIG.

As shown in FIG. 1, in the building 2 according to the present embodiment, the outer ventilation layer 6 and the inner ventilation layer 7 are directly provided on the indoor side of the outer wall material 4a and the roof material 4b of the building. A heat insulating material 8 is stretched in the surface direction so as not to communicate with each other and the inner ventilation layer 7 always communicates with the attic space 20 and the underfloor space 16. Further, such a heat insulating material 8 is stretched so as to comprehensively surround each room 10 in the building 2 and not to allow the outer ventilation layer 6 and the inner ventilation layer 7 to communicate with each other. . In the figure, 31 is a solid foundation, which uses the underfloor space to store underground heat in winter to effectively use it for heating, etc. It is intended for use in air conditioning.

The outer ventilation layer 6 formed on the outdoor side of the heat insulating material 8 extends all over the wall and the inside of the roof, and at least one of the lower end and the upper end thereof is opened to the outside air. There is. As shown in FIG. 1, the outer ventilation layer 6 is always open to the outside air through the through hole 6a formed in the lower end portion of the outer ventilation layer 6.

Further, the inner ventilation layer 7 extends all around the room 10 so as to communicate with the underfloor space 16 and the attic space 20, and the inner ventilation layer 7 a between the rooms 10 is , Formed between partitions.

An underfloor ventilation port 12 is formed in a part of the heat insulating material 8 stretched around as described above. The underfloor ventilation port 12 is provided to properly connect the outdoor space and the underfloor space 16, and is connected to an underfloor ventilation port 18 formed in the wall covering material 4a.

A through hole 14 is provided so as to penetrate the heat insulating material 8 on the side wall surrounding the attic space 20 and the outer wall material 4 a. As shown in FIGS. 1 and 2, this penetration hole 14 is provided. A heat insulating / airtight exhaust device 30 (hereinafter referred to as “exhaust device”) provided with the blow-in prevention ventilation port 15 of the present invention is attached to the hole 14.

As shown in FIG. 2, the exhaust device 30 includes a blow-in prevention ventilation port 15 according to the present invention, an intake port portion 50 communicating with the indoor side, and the blow-in prevention ventilation port 15 and the intake port. It is composed of a ventilation fan section 60 arranged between the sections 50. At this time, if the exhaust device 30 is attached so that the height of the blow-in prevention ventilation port 15 is lower than the height of the intake port portion 50 (so-called water gradient is provided), rainwater and dew condensation will occur. Also in this case, water is discharged to the outside through the blow-in prevention ventilation port 15, which is preferable.

The blow-in prevention ventilation port 15 is formed in a substantially L-shape from a cylindrical tubular member 41 made of a synthetic resin such as vinyl chloride or stainless steel, and a hood portion 70 made of stainless steel or the like and protruding to the outdoor side. A casing 45 that is bent in the direction of the arrow is formed, and the tubular member 41 is supported by being fitted into the through hole 14. Further, in the blow-in prevention ventilation port 15, the first check damper 42 is provided in the tubular member 41, the fire protection damper 80 is provided in the hood portion 70, and the second check valve is provided in the opening 72 of the hood portion 70. A damper 94 is provided for each.

As shown in FIG. 3, the first check damper 42 includes a shaft 42 A fixed above the inner wall of the tubular member 41 in the horizontal direction perpendicular to the axial direction of the tubular member 41. A disk-shaped non-return damper member 42B is configured to be openable and closable around the shaft 42A from an open position indicated by a chain line to a closed position indicated by a solid line by the weight of the non-return damper member 42B. That is, the non-return damper 42 has the non-return damper member 42B in the open position (the one-dot chain line position) with respect to the air flow from the intake port side (right side in FIG. 3) to the exhaust port side (left side in FIG. 3). ), On the contrary, against the air flow from the exhaust passage side to the intake side, or when there is no air flow from the intake side, the check damper member 42B is in the closed position (solid line). Position). In the figure, 42C and 42D are stopper members which respectively contact the check damper member 42B to maintain airtightness.

On the other hand, the fireproof damper 80 in the hood portion 70 is configured to be in a closed state at a predetermined temperature, preferably 70 ° C. or higher. Specifically, as shown in FIGS. 4 and 5, the fire damper 80 is provided with a shaft 82 fixed in the vertical direction inside the hood portion 70, and two shafts 82 having a semi-disc shape are provided around the shaft 82. The fire damper members 84, 84 are urged in a direction in which they are separated from each other in a state of being superposed by a coil spring 85. Normally, the fuse member 86 attached to the tip of the fire damper members 84, 84 makes the position shown in FIG. ing. Although not shown, the fuse member 86 is fixed to the hood portion 70 by a fastener or the like. Therefore, when the temperature exceeds a predetermined temperature, the fuse member 86 is melted and the fire damper members 84, 84 are moved to the closed position shown in FIG. It is designed to prevent smoke and smoke from entering the room.

Further, as shown in FIG. 6, in the opening 72 of the hood 70, a second dog-like checker damper 94 having a substantially doglegged shape whose one end is rotatably supported by a hinge 92. Is installed. This second non-return damper 94 prevents strong wind such as north wind in winter from blowing into the room through the opening 72 of the hood 70. The second non-return damper 94 is normally located at the position indicated by the solid line in FIG. 6 due to its own weight, and the opening 72 of the hood 70 is open. As described above, when a strong wind having a pressure equal to or higher than the predetermined pressure is received, it rotates to close the opening 72 of the hood 70. In the figure, reference numeral 74 is a protective member such as a wire mesh for preventing insects and birds from entering the room.

As shown in FIG. 2, the ventilation fan unit 60 has two ventilation fans 62 and 64 provided in the front and rear in a circular ventilation fan unit main body 61, whereby a spiral-shaped wind is generated. Occurs, and it is possible to exhaust effectively.

An intake port 50 made of synthetic resin such as vinyl chloride that communicates with the indoor side is connected to the intake (right side of FIG. 2) side of the ventilation fan unit 60. Inside 50, an airtight opening / closing damper 100 configured to be able to open / close in an airtight manner is provided.

In this way, as shown in FIG. 2, on the outer peripheral surfaces of the intake port portion 50, the ventilation fan portion 60, and the airtight opening / closing damper 100 arranged on the indoor side, as shown in FIG. 34 is flexed so that its heat insulating property is maintained. As the foamed resin forming the heat insulating material 34, foamed resins such as polystyrene, polyethylene, polyvinyl chloride, polypropylene, polyurethane, epoxy resin and phenol resin can be used, and the expansion ratio thereof is not particularly limited. However, it is preferably 10 to 60 times, more preferably 15 to 40 times. Further, in order to encircle the heat insulating material 34 on the outer peripheral surface, the heat insulating material 34 may be constituted by two members obtained by vertically dividing a cylinder into two parts and mounted.

Further, the exhaust device 30 is mounted by a mounting member 35 suspended from above. In this embodiment, the through hole 14 for mounting the exhaust device 30 is provided so as to penetrate the heat insulating material 8 and the outer wall material 4a facing the side wall of the attic space 20, but for example, the roof material 4b is penetrated. It may be provided to do so.

In the building 2 of the present embodiment configured as described above, it is possible to easily achieve high heat insulation and high airtightness by closing the underfloor opening / closing damper 24 of the underfloor ventilation port 12 in winter. It becomes possible to greatly improve the efficiency of heating.

Here, in the summer, the attic space 20 in the building becomes hot air and becomes a high temperature. Therefore, it is necessary to discharge the warm air in the attic through the placement device 30 to the outside.

Therefore, for example, based on the detection result of the temperature sensor arranged in the attic space 20, when the indoor temperature is a predetermined temperature, preferably 40 ° C. or higher, the ventilation fans 62, 64 of the ventilation fan unit 60 1 Is driven, and the airtight open / close damper 100 is opened. Further, by driving the ventilation fan unit 60 of the exhaust device 30, the warm air accumulated in the attic space 20 is forcibly discharged. That is, by driving the ventilation fan unit 60, indoor air flows in through the intake port unit 50, and an air flow from the intake port side to the exhaust port side is generated, so that the first check damper 42 As a result, the indoor air can be forcedly exhausted to the outside through the fire damper 80 and the second check damper 94.

In addition, the exhaust device 30 of the present invention is provided with the second check damper 94 that automatically closes the hood opening 72 when the hood 70 is blown with a strong wind. As a result, strong winds can be prevented from entering and exhaust performance is not impaired. Further, in the case where a weak wind below a predetermined level is swept and the wind passes through the second check damper 94 and enters, the first check damper 42 is installed inside. Therefore, the outside air will not enter any more. Therefore, in winter when the exhaust device 30 is not operated, high airtightness and high heat insulation on the indoor side can be maintained. However, since the exhaust device 30 is surrounded by the heat insulating material 34, the heat insulating property is not deteriorated and dew condensation does not occur.

In the above embodiment, the two non-return dampers, the first non-return damper 42 and the second non-return damper 94, are installed on both sides of the fire protection damper 80. However, even one non-return damper is provided. Good, the installation place is not particularly limited to the inside or outside of the fire damper 80.

Further, as the non-return damper, one having another structure can be adopted. 7A and 7B show examples of other check dampers. In this non-return damper member 90, for example, a small-diameter cylindrical portion 43 is further projectingly provided in the cylindrical member 41, and a pin-shaped guide member 70A in which a spring 94G is interposed in the small-diameter cylindrical portion 43 is separated by a predetermined distance to form a plurality of members. Individually arranged. Further, a curved bowl-shaped wind receiving member 97 is slidably attached to these guide members 70A. The wind receiving member 97 is pressed by the pulling 94G in a direction away from the valve seat 95 of the small diameter cylindrical portion 43.

In the non-return damper 90, when an air flow accompanied by cold cold air collides with the wind receiving member 97 from the outside, the wind receiving member 97 moves to the right side of the drawing as shown in FIG. 7B. And the opening 72 of the hood 70 is closed airtightly. Therefore, even if the wind blows from the outside, it is blocked by the check damper 90 and does not flow into the room.

According to such a check damper 90, it is possible to adjust the strength of blocking the wind by adjusting the strength of the spring 94G. FIG. 8 shows still another non-return damper 110.

In the check damper 110, a support arm 111 curved in, for example, a substantially S shape is rotatably attached to one end of the open end 72 of the hood portion 70. A lid 112 is rotatably attached to the other end of the open end 72 of the hood portion 70. A guide hole 114 is formed in the lid 112, and one end of the support arm 111 is inserted into the hole 114.

On the other hand, at one end of the support arm 111, a blade member 113 that is shaken under the force of the wind is attached, and the blade member 113 has a surface 113a that receives the wind curved. On the other hand, a ball 115 for preventing coming off is installed at the other end of the support arm 111.

In the check damper 110 having the above-described structure, when the blade member 113 is exposed to wind with a force greater than a predetermined value, the support arm 111 rotates clockwise in FIG. 8A. Then, along with this, as shown in FIGS. 8B and 8C, the lid body 112 sequentially rotates in the timekeeping direction, and then the opening 72 is closed. The blade receiving member 1 is made sufficiently large so that the lid 112 can be moved by wind force. Further, a roller or the like for reducing resistance can be installed in the guide hole 114 of the lid 112.

Further, a hinge 115 may be interposed at a connecting portion between the supporting arm 111 and the blade member 113 so that the blade member 113 can face each other in a direction most likely to receive the wind.

Even with such a non-return damper 110, even if the wind tries to enter the inside from the outside, the opening 72 can be blocked by using the force of the wind. In the above embodiment, the blow-in prevention vent of the present invention is installed in the ventilation device 30 in the back of a highly insulated and airtight house, but the present invention may be used alone. Of course, even if it is not for a solar circuit, it can be installed in other places where hot air accumulates.

[0040]

[Effect of the invention]

 As described above, according to the blow-in prevention damper of the present invention, the outside air entering the room through the opening of the exhaust passage is blocked by the check damper, so that the indoor air-tightness, High thermal insulation can be maintained. Also, it does not cause condensation. In addition, since a fire damper is installed, fire prevention can be managed.

Further, when installing in a building for a solar circuit having a double ventilation layer, an exhaust passage portion communicating with the outdoor side is attached to a through hole provided in a wall portion of the building or the like. Even if it is a gabled or parquet type, it does not need to be equipped with a dormer or the like as in the past, and it has an excellent aesthetics and can exhaust the air from the building in a heat-tight manner.

Furthermore, when a predetermined strong wind blows into the hood, the hood opening is automatically closed, so that backwind can be prevented and exhaust performance is not hindered, especially in winter. Stable exhaust is possible even for the seasonal winds of the year, and it is possible to effectively prevent the deterioration of heat insulation and the generation of dew condensation due to the indoor air blowing.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a building according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 shows a first embodiment of the first embodiment of the present invention.
FIG. 3 is a cutaway perspective view of the non-return damper.

FIG. 4 is a cutaway perspective view of a fire damper used in the first embodiment of the present invention.

FIG. 5 is a front view of FIG. 4;

FIG. 6 shows a second embodiment adopted in the first embodiment of the present invention.
It is sectional drawing which shows the non-return damper.

FIG. 7 (a) is a cross-sectional view showing a check damper used in a second embodiment of the present invention, and FIG. 7 (b) shows the action when wind blows on the check damper. It is sectional drawing shown.

FIG. 8 (a) is a cross-sectional view showing a check damper used in a third embodiment of the present invention, and FIG. 8 (b) is a function when wind blows on the check damper. 8 is a cross-sectional view showing FIG.
FIG. 7C is a sectional view when the check damper is sufficiently blown with air to close the opening.

[Explanation of symbols]

 2 Building 4a Outer wall surface 15 Blow prevention damper 41 Cylindrical member 42 Non-return damper 45 Casing 70 Hood part 70A Guide member 80 Fire prevention damper 86 Fuse member 90 Non-return damper 94 Non-return damper 94G Spring 97 Wind receiving member 110 Non-return damper 111 Support arm 112 Lid body 113 Blade member 115 Hinge

Claims (5)

[Utility model registration claims] 1. The structure is installed on an outer wall surface of a building, and an exhaust passage is opened to the air sent from the inside so that the air can be discharged to the outside and blown from the outside. For the wind to be a blow-in prevention ventilation port that closes the exhaust passage to block the intrusion of air from the outside, and a tubular member arranged so as to penetrate the wall of the building,
A casing is composed of a hood portion which is connected to the tubular member and is disposed on the outdoor side, and a check damper which is opened only when there is an air flow from the indoor side in the exhaust passage of the hood portion. The blow-in preventive ventilation port further comprises a fire damper that blows off the fuse member when the temperature exceeds a predetermined temperature to block the indoor and outdoor exhaust passages. 2. The structure is installed on the outer wall surface of a building, and the exhaust passage is opened to the air sent from the inside so that the air can be discharged to the outside and blown from the outside. For the wind to be a blow preventing ventilation port that closes the exhaust passage to block the invasion of air from the outside, and a tubular member arranged so as to penetrate the wall of the building,
A casing is composed of a hood portion connected to the tubular member and arranged on the outside of the room, and a lid body is installed in the exhaust passage of the hood portion so as to be openable and closable, and the lid body receives wind force. While opening and closing based on the pivotal movement of the supporting arm member connected to the swinging blade member, the temperature inside the check damper formed between the lid and the exhaust passage has reached a predetermined temperature or higher. At the time, the blow-in preventive ventilation opening is characterized in that it is provided with a fire-proof damper which blows off the fuse member to shut off the passage on the indoor side. 3. The blow-in prevention ventilation opening according to claim 2, wherein the blade member is formed by a concave surface having a curved surface for receiving wind. 4. The blow-in prevention ventilation opening according to claim 2, wherein the vane member is swingably supported by the support arm member via a hinge so as to easily receive wind. 5. The structure is installed on an outer wall surface of a building, and an exhaust passage is opened to the air sent from the inside so that the air can be discharged to the outside and blown from the outside. For the wind to be a blow-in prevention ventilation port that closes the exhaust passage and blocks the intrusion of air from the outside, at one end of the tubular member arranged so as to penetrate the wall of the building. A plurality of guide members are provided so as to be separated from each other by a predetermined distance, and a wind receiving member capable of closing the open end of the tubular member is axially slidably supported by these guide members. A spring is interposed in a compressed state in the normal state, and in a normal state, the wind receiving member and the tubular member are separated from each other to open the check damper composed of the wind receiving member and the tubular member, and from the outdoor side to the indoor side. The wind is about to blow At times, this wind collides with the wind receiving member, compresses the spring to move the wind receiving member toward the tubular member side, and the tubular member and the wind receiving member are airtightly matched and exhausted. A blow-in preventive ventilation opening comprising a fire-proof damper that closes the passage and, when the temperature exceeds a predetermined temperature, fuses the fuse member to block the exhaust passage.