JP2010037854A - Attic ventilation method and ventilation mechanism therefore - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attic ventilation method and a ventilation mechanism therefore which can easily perform natural ventilation of attic air without stagnation, surely perform discharge of hot air generated by temperature increase and prevention of dew formation due to a temperature difference and an atmospheric pressure difference between indoor and outdoor, and can maintain the strength of the whole roof. <P>SOLUTION: The attic ventilation method includes a process for forming a plurality of openings along the trapezoid upper surface of an existing folded-plate roof formed by repeating trapezoidal portions, a process for installing and fixing a ventilation cover having a substantially trapezoidal cross section and equipped with louvers on both right and left sides so as to cover the openings, and a process for interposing a refractory sheet between the openings and the ventilation cover. The ventilation mechanism for an attic includes the openings formed along the trapezoid upper surface of the existing folded-plate roof formed by repeating the trapezoidal portions, and the ventilation cover having a substantially trapezoidal cross section and equipped with the louvers on both right and left sides and installed and fixed to the trapezoid upper surface so as to cover the openings. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an attic ventilation method and a ventilation mechanism thereof that can easily ventilate an attic in a building such as a general house or a warehouse having a flat roof, a triangular roof, etc., such as a folded-plate roof. It is.

  For example, as shown in FIGS. 5 (a) to 5 (d), natural ventilation is provided as an attic ventilation mechanism for preventing humid air that may cause mold, stains, and the like due to dew condensation. The system using the building is adopted.

  Specifically, what is shown in FIGS. 5A and 5B is called a wife ventilation system, and is adopted for ventilation of an attic in a building such as a general house or a warehouse provided with a flat roof 100. At this time, as shown in FIG. 5A, the flow of air in the attic flows in a substantially gentle wave shape due to the sideways wind.

  Further, as shown in FIG. 5 (b), when the wind from the bottom to the top is generated, the flow of the air in the attic is in a high-pressure state without a flow velocity at the center, and the left and right sides are substantially symmetrical with respect to each other. It flows as.

  Furthermore, what is shown in FIGS. 5C and 5D is called an eaves ventilation system, and is used for ventilation of an attic in a building such as a general house or a warehouse provided with a triangular roof 200. At this time, when the sideways wind from the air vent 201 leading to the attic on both sides of the triangular roof 200 or the wind flowing upward from below flows in, the apex portion of the triangular roof 200 becomes a high pressure state without a flow velocity, The wind flows in a parallel flow along the left-right direction.

  In addition, as shown in FIG. 6, in the case of a flat roof with a folded plate roof structure in which the frame plate material 300 having a substantially trapezoidal cross section is continuous in a corrugated shape, a part of the trapezoidal portion of the frame plate material 300 is opened, A mechanism using an electric ventilation system provided with a motor fan unit 301 at the opening is adopted.

  In the motor fan unit 301, a rectangular cylindrical body base 302 is attached to an opening formed in the frame plate member 300, and a guard net 303 is laid in the bottom of the body base 302.

  A motor 304 with a fan is mounted on the guard net 303, and a cover 306 is crowned on the upper opening side of the body base 302 via a pair of left and right downward vent holes 305.

The air in the attic is sucked into the body base 302 through the guard net 303 by the rotation of the fan 304 with the fan, and then externally from the downward vent hole 305 between the cover 306 and the body base 302. To be discharged.
nothing special

  However, in the case of the natural ventilation building using the wife ventilation method / eave ventilation method described above, when the wind from the lateral direction or the wind from the lower side is generated as shown in FIGS. 5 (a) to 5 (d). Since the stagnation which became the high atmospheric pressure state without the flow velocity occurs in the place shown by the black dots in the figure, sufficient ventilation is not performed.

  Further, in the case of a mechanism by an electric ventilation system using the motor fan unit shown in FIG. 6, air in the attic is concentrated on the portion where the motor fan unit is attached and is forced to be discharged to the outside. Since the stagnation of air in an inverted triangle shape occurs on the lower surface side of the corrugated frame plate material on both sides where the motor fan unit does not exist, sufficient ventilation is not performed for this.

  Therefore, the present invention has been created in view of the existing circumstances as described above, and can easily ventilate the air in the attic without generating stagnation, discharge of hot air due to temperature rise, indoors It is an object of the present invention to provide an attic ventilation method and its ventilation mechanism that can reliably prevent the occurrence of condensation due to an external temperature difference or atmospheric pressure difference, and at the same time maintain the strength of the entire roof.

  The attic ventilation method according to the present invention comprises the steps of forming an opening in an existing roof, and the step of attaching a ventilation cover provided with a louver so as to cover the opening. Settled.

  Moreover, the subject mentioned above was solved similarly by including the process of interposing a fireproof sheet between an opening part and a ventilation cover.

  Furthermore, the step of forming a plurality of openings along the trapezoidal upper surface portion of the existing folded plate roof formed by repeating the trapezoidal portion, and the ventilation cover having a substantially trapezoidal cross section having louvers on both the left and right side surfaces, The above-mentioned problem was solved by comprising a step of covering and fixing the cover so as to cover the portion and a step of interposing a fireproof sheet between the opening and the ventilation cover.

  Further, the attic ventilation mechanism according to the present invention includes an opening formed along the trapezoidal upper surface portion of an existing folded plate roof formed by repeating a trapezoidal portion, and a trapezoidal upper surface portion so as to cover the opening portion. The above-mentioned problem has been solved by comprising a ventilation cover having a substantially trapezoidal cross section with louvers on both the left and right sides fixed by crowning.

  In addition, the louver protrudes downward from the upper edge of the opening formed on the side surface of the ventilation cover, thereby solving the above-described problem.

  Moreover, the subject mentioned above was solved similarly by including the interposed fireproof sheet between the opening part and the ventilation cover.

  Furthermore, the ventilation cover solved the above-mentioned problem by fixing the fixing leg portion formed opposite to the lower opening side to the folded plate roof itself through fixing means.

  According to the present invention, the air in the attic can be easily naturally ventilated without causing stagnation, and the occurrence of condensation due to the discharge of hot air due to temperature rise, the temperature difference or the pressure difference between the inside and outside the room, etc. At the same time, the strength of the entire roof can be maintained.

  That is, the attic ventilation method according to the present invention includes a step of forming an opening in an existing roof and a step of attaching a ventilation cover provided with a louver so as to cover the opening. Air can be naturally ventilated easily without generating stagnation.

  Moreover, since the process of interposing a fireproof sheet between the opening and the ventilation cover is included, when the temperature of the attic reaches, for example, 200 ° C. or more during a fire, the fireproof sheet thermally expands and opens. Since it blocks the part and blocks the inflow of outside air, it is possible to prevent the fire from spreading.

  Furthermore, a step of forming a plurality of openings along the trapezoidal upper surface portion of the folded plate roof formed by repeating the trapezoidal portion, and a ventilation cover having a substantially trapezoidal cross section with louvers on both left and right side surfaces, Since it consists of a process of covering and fixing so as to cover and a process of interposing a fireproof sheet between the opening and the ventilation cover, natural ventilation is ensured for the air in the attic without generating stagnation Can be made.

  Moreover, when the temperature of the attic reaches 200 ° C. or more, for example, in the event of a fire, the fire-resistant sheet thermally expands and closes the opening, thereby blocking the inflow of outside air. Therefore, the expansion of the fire can be stopped in advance.

  On the other hand, an attic ventilation mechanism according to the present invention includes an opening formed along a trapezoidal upper surface of an existing folded plate roof formed by repeating a trapezoidal portion, and a trapezoidal upper surface covering the opening. It consists of a ventilation cover with a substantially trapezoidal cross section with louvers on both the left and right sides that are fixed by crowning, so the air in the attic can be easily naturally ventilated without causing stagnation, and the temperature rises It is possible to surely prevent the generation of condensation due to the discharge of hot air due to, the temperature difference or the pressure difference between the inside and outside the room.

  In addition, the strength of the entire roof can be maintained. And since a ventilation cover is attached through the opening part formed along the trapezoid upper surface part of a folded-plate roof, the ventilation mechanism itself of an attic can be produced easily and cheaply.

  In addition, the louver protrudes downward from the upper edge of the opening formed on the side of the ventilation cover, so that intrusion of foreign matter, dust, etc. due to cross wind into the ventilation cover, intrusion of rainwater, etc. Can be prevented in advance.

  Moreover, since the fireproof sheet interposed is included between the opening and the ventilation cover, when the temperature of the attic reaches 200 ° C. or more, for example, in the event of a fire, the fireproof sheet is thermally expanded, and the opening is opened. Since it blocks and blocks the inflow of outside air, it is possible to prevent the expansion of the fire.

  In addition, the ventilation cover is fixed to the folded-plate roof itself through the fixing means, so that the fixing leg facing the lower opening is fixed to the folded-plate roof itself. , The strength of the entire roof can always be maintained.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In the following description, a flat roof having a folded plate structure is described as an example. However, the present invention is not limited to this, and the attic according to the present invention is used for ventilation of an attic in a building such as a general house or a warehouse with a triangular roof. Of course, the ventilation method and its ventilation mechanism may be adopted.

  As shown in FIG. 1, the attic ventilation mechanism according to the present invention has a plurality of louvers 4 formed on both left and right side surfaces, and is folded back in a substantially V shape toward the inside on both sides on the lower opening side. A long ventilation cover 1 having a substantially trapezoidal cross section provided with fixing legs 2 is provided.

  Then, the opening 3 is formed in the trapezoidal upper surface portion of the existing folded plate roof W formed by repeating the trapezoidal portion, and the ventilation cover 1 is covered with the trapezoidal upper surface portion so as to cover the opening 3.

  As shown in FIG. 2, the folded plate roof W includes a tight frame F formed with a stepped portion R for fastening and fixing the lower bent portion of the hanging material T with bolts and nuts. The folded plate roof W is suspended from the upper bent portion.

  At this time, the tight frame F is formed with a vent hole F1 corresponding to the opening 3 of the folded plate roof W. In addition, as shown in FIG. 2, in order to maintain sufficient strength of the folded plate roof W itself, the shoulders on both sides of the folded plate roof W have angles of a size matching the folded plate roof W. A shoulder abutment member 10 for reinforcement with a material is attached. Furthermore, a stop face door 7, a decorative frame 8, a drained face door 9, and the like are fixed to the end of the folded plate roof W.

  And the ventilation cover 1 is formed in the magnitude | size match | combined with the folded-plate roof W, and was formed at equal intervals along the trapezoid upper surface part of the existing folded-plate roof W in which a trapezoid part is repeated, for example, After covering the trapezoidal upper surface portion with a predetermined interval from the upper side, a plurality of openings 3 having a rectangular shape with a lateral width of about 1 cm to 50 cm and a length of about 50 cm to 100 cm are covered. The fixing leg portions 2 at both ends are fixed to the trapezoidal both side surfaces of the folded plate roof W by fixing means 5 such as riveting or adhesive.

  At this time, as shown in FIG. 4, when the ventilation cover 1 is juxtaposed on the upper end side of the folded plate roof W, for example, at a ratio of about three and one on the lower end side, the folded plate roof W However, even if it is sealed by the ventilation cover 1, the air flow is good, and the ventilation ability is sufficiently exhibited.

  The shape of the opening 3 is not limited to a rectangle, and may be any of a square, a circle, an oval, and the like. In addition, the opening area of the opening 3 is set to, for example, about 1/600 or more of the total area of the folded plate roof W in consideration of ventilation efficiency and installation conditions.

  The fixing legs 2 of the ventilation cover 1 are folded back in a substantially V shape toward each other on the lower opening side of the ventilation cover 1. Therefore, as shown in FIG. 2 and FIG. 3, the ventilation cover 1 itself is arranged in a slightly raised state with respect to the folded-plate roof W, and thereby, between the folded-plate roof W and the ventilation cover 1. A space is formed in the.

  In addition, it is expected that the strength of the folded-plate roof W itself is reduced by forming the plurality of openings 3 in the folded-plate roof W. Since it is fixed to the folded-plate roof W itself by various fixing means 5 such as a stopper or an adhesive, the strength of the folded-plate roof W can be sufficiently maintained.

  Further, as shown in FIG. 2, the louver 4 protrudes obliquely downward from the upper edge of the horizontally long rectangular opening 4a formed in a plurality of steps on the side surface of the ventilation cover 1. ing.

  Furthermore, as shown in FIG. 2, the fireproof sheet 6 is attached to the lower surface side of the trapezoid upper surface part of the ventilation cover 1 between the opening part 3 of the folded-plate roof W and the ventilation cover 1, for example. The refractory sheet 6, for example, expands about 30 times when heated to 200 ° C. or more to form a heat insulating layer, thereby forming a vent hole F1 of a tight frame F that is a vent portion that becomes a passage for a flame, a folded plate Each of the opening 3 of the roof W and the ventilation opening 4a in the louver 4 of the ventilation cover 1 is blocked, and a space is maintained as a ventilation opening at a normal temperature.

  Next, an example of assembly, use, and operation of the best mode of the present invention configured as described above will be described.

  Basically, as shown in FIG. 2, the existing folded plate roof W is suspended through the upper end bent portion of the suspension member T of the tight frame F. At the end of the folded plate roof W, a stop face door 7, a decorative frame 8, and a water drain face door 9 are fixed. Further, a reinforcing shoulder contact member 10 having a size matching the folded plate roof W is attached to the shoulder portion of the folded plate roof W.

  When the ventilation cover 1 is installed, a plurality of openings 3 are formed in the trapezoidal upper surface portion of the folded plate roof W, and a vent hole F1 is formed through the tight frame F corresponding to the opening 3 of the folded plate roof W. The

  Next, as shown in FIG. 1, the ventilation cover 1 is crowned on the trapezoidal upper surface so as to cover the plurality of openings 3 of the folded roof W with a predetermined interval from the upper side, and both ends thereof are fixed. For example, the leg 2 is fixed to the trapezoidal side surfaces of the folded plate roof W by fixing means 5 such as riveting or adhesive.

  At this time, as shown in FIG. 2, the ventilation cover 1 itself is arranged and fixed in a state of being slightly lifted with respect to the folded plate roof W. A fireproof sheet 6 is attached in advance to the lower surface side of the trapezoidal upper surface portion of the ventilation cover 1.

  Then, as shown in FIG. 3, the moist air in the attic passes through each of the vent hole F1 of the tight frame F, the opening 3 of the folded roof W, and the ventilation opening 4 a in the louver 4 of the ventilation cover 1. Discharged outside. In FIG. 3, the vent hole F1 and the shoulder member 10 of the tight frame F are omitted for convenience.

  Also, in the event of a fire, when the refractory sheet 6 is heated to, for example, 200 ° C. or more, it expands about 30 times to form a heat insulation layer, and the ventilation hole of the tight frame F that is a ventilation portion that becomes a passage for the flame F1, the opening 3 of the folded roof W, and the ventilation opening 4a in the louver 4 of the ventilation cover 1 are blocked.

  The attic ventilation method and its ventilation mechanism according to the present invention can be used as an attic ventilation system in buildings such as ordinary houses and warehouses with flat roofs and triangular roofs with folded plate roofs. It can be widely applied as a ventilation method and its ventilation mechanism for building structures with a roof structure.

It is a perspective view of the assembly state which shows an example of the ventilation mechanism of an attic. It is a longitudinal cross-sectional view of the state which assembled | attached the ventilation mechanism of the attic. It is sectional drawing explaining the flow of the air by the natural ventilation of an attic. It is a perspective view of the assembly state which shows an example of arrangement | positioning of the ventilation mechanism of an attic. The flow of the air by the natural ventilation of the attic in the past is demonstrated, (a) * (b) is explanatory drawing of the wife ventilation system, (c) * (d) is explanatory drawing of an eaves ventilation system. It is sectional drawing of the attic ventilation mechanism by the conventional electric ventilation system.

Explanation of symbols

W ... Folded plate roof T ... Hanging element R ... Stepped part F ... Tight frame F1 ... Vent

DESCRIPTION OF SYMBOLS 1 ... Ventilation cover 2 ... Fixing leg part 3 ... Opening part 4 ... Louver 4a ... Opening part for ventilation 5 ... Fixing means 6 ... Fireproof sheet 7 ... Stop door 8 ... Makeup frame 9 ... Drain face door 10 ... Shoulder contact member

DESCRIPTION OF SYMBOLS 100 ... Flat roof 200 ... Triangular roof 201 ... Vent hole 300 ... Frame board material 301 ... Motor fan unit 302 ... Body base 303 ... Guard net 304 ... Motor with fan 305 ... Downward vent hole 306 ... Cover

Claims (7)

  An attic ventilation method comprising: forming an opening in an existing roof; and attaching a ventilation cover having a louver so as to cover the opening.   The attic ventilation method according to claim 1, further comprising a step of interposing a fireproof sheet between the opening and the ventilation cover.   A step of forming a plurality of openings along a trapezoidal upper surface of an existing folded-plate roof formed by repeating a trapezoidal portion, a ventilation cover having a substantially trapezoidal cross section with louvers on both left and right sides, and the opening An attic ventilation method characterized by comprising a step of covering and fixing so as to cover, and a step of interposing a fireproof sheet between the opening and the ventilation cover.   An opening formed along the trapezoidal upper surface portion of an existing folded-plate roof formed by repeating a trapezoidal portion, and a louver on both the left and right sides that are fixed by covering the trapezoidal upper surface portion so as to cover the opening portion An attic ventilation mechanism comprising a ventilation cover having a substantially trapezoidal cross section.   5. The attic ventilation mechanism according to claim 4, wherein the louver protrudes downward from an upper edge of the opening formed on the side surface of the ventilation cover.   The attic ventilation mechanism according to claim 4 or 5, further comprising an interposed fireproof sheet between the opening and the ventilation cover.   The ventilation mechanism for an attic according to any one of claims 4 to 6, wherein the ventilation cover is fixed to the folded-plate roof itself through fixing means, and fixing legs that are formed to face the lower opening side.

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