JP2017078552A - Weather cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a negative pressure from being generated in an interior part of an outer wall.SOLUTION: A weather cover includes: a fixing frame 11; a hood 12 which is attached to the fixing frame 11 and is formed downward toward a rear side; and a partition plate 13 comprising a first partition plate 25 and a second partition plate 26 which divide interior parts of the fixing frame 11 and the hood 12 into upper and lower areas. The partition plate 13 is fixed in a state where a front side plate part 25b of the first partition plate 25 contacts with a bottom plate part 11c of the fixing frame 11 and a rear side plate part 26b of the second partition plate 26 contacts with a bottom plate part 22 of the hood 12. An outflow port 16 is formed at the bottom plate part 11c of the fixing frame 11, and an inflow port 23 is formed at the bottom plate part 22 of the hood 12. An intake passage 30, which extends from the inflow port 23 and reaches the outflow port 16 through a space between the partition plate 13 and the bottom plate part 22 of the hood 12 and a space between the partition plate 13 and the bottom plate part 11c of the fixing plate 11, is formed in the fixing frame 11 and the hood 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a weather cover including a fixed frame fixed around a ventilation port provided on an outer wall of a building, and a frame attached to the fixed frame and preventing rainwater from entering the ventilation port.

  2. Description of the Related Art Conventionally, ventilation openings are provided in an outer wall for the purpose of indoor ventilation or ventilation between an outer wall and an inner wall in a building. In order to prevent rainwater from entering the room or the wall from the ventilation port, a weather cover is generally attached to the ventilation port.

  The weather cover includes a fixed frame attached to the outer wall so as to surround the ventilation port, and a cylindrical frame formed on the fixed frame, and fixes the fixed frame to the periphery of the ventilation port of the outer wall. One in which the mouth communicates with the inside of the frame is known (for example, see Patent Document 1).

  The frame body of the weather cover described in Patent Document 1 is formed in a cylindrical shape having a rectangular cross section including a curved top plate, both side plates, and a lower plate, and one opening portion is opposed to the ventilation port of the outer wall, and the other The opening is curved so that it faces downward.

  The fixed frame has flanges formed at the end portions on one opening side of the top plate and both side plates, and one opening portion of the frame body is opposed to the ventilation opening on the outer wall of the building, and the other opening portion is A fixed frame is attached around the ventilation opening in a state of facing downward.

JP 2005-265239 A

  By the way, a ventilation fan is installed inside the ventilation port, and exhausted to the outside through the weather cover described in Patent Document 1 through the ventilation port from the room by the operation of the ventilation fan.

  If the room continues to be exhausted by continuous operation of the ventilation fan, the room gradually becomes negative pressure. Further exhaust from the negative pressure room has a problem that an excessive load is applied to the ventilation fan.

  In order to prevent the negative pressure in the room, for example, it is conceivable to separately provide a ventilation port for intake air or to provide an air intake port provided with an intake fan for introducing air from the outside to the room. However, it may be difficult to secure a space for installing a new ventilation port or an intake port equipped with an intake fan, and a separate installation cost is required.

  Then, the subject of this invention is providing the weather cover which prevents that the inside of an outer wall becomes a negative pressure.

  In order to solve the above-described problems, a weather cover according to the present invention is attached to a peripheral edge of a ventilation port of an outer wall, and is attached to the fixed frame having a top plate portion, a bottom plate portion, and left and right side plate portions, and the fixed frame. A hood formed downwardly toward the rear, and the hood has a top plate portion, a bottom plate portion, and left and right side plate portions, and the inside of the front end portion of the hood is a rear end portion of the fixed frame. A weather cover that communicates with the interior, and has a partition plate that divides the interior of the fixed frame and the hood into upper and lower portions, and the partition plate is fixed in a state in which a front side plate portion is in contact with a bottom plate portion of the fixed frame. The fixing frame is formed on a bottom plate portion thereof, and has an outlet located on the inner side of the outer wall. The fixing frame and the hood are provided between the partition plate and the bottom plate portion of the hood. From the partition plate and the bottom plate portion of the fixed frame Through between, it is possible to adopt a configuration having an intake passage leading to the outlet.

  According to this configuration, since the intake passage is formed inside the fixed frame and the hood by the partition plate portion that divides the inside of the fixed frame and the hood up and down, the air outside the outer wall passes through the outlet from the intake passage and flows into the inside of the outer wall. Can be incorporated into.

  In the weather cover of the present invention, when the air inside the outer wall is discharged, the air outside the outer wall is introduced into the outer wall from the intake passage through the inlet, so that the inside of the outer wall becomes negative pressure. Therefore, it is possible to prevent an excessive load from being applied to the exhaust fan for exhausting air from the inside of the outer wall.

The longitudinal cross-sectional view which shows the weather cover of embodiment which concerns on this invention Partially cutaway perspective view of the weather cover as seen from above The main part enlarged vertical sectional view of the weather cover A perspective view of the weather cover as seen from below Sectional drawing in the AA line of FIG. Longitudinal sectional view showing how the weather cover is used

  A weather cover according to a first embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 6, the weather cover 10 divides the inside of the fixed frame 11 and the hood 12 into upper and lower parts, a fixed frame 11 attached to the ventilation opening of the outer wall, a hood 12 attached to the fixed frame 11. A partition plate 13 is provided.

  As shown in FIGS. 1 and 2, the fixed frame 11 is formed in a cylindrical shape having a rectangular cross section by a top plate portion 11a, left and right side plate portions 11b and 11b, and a bottom plate portion 11c. An inward fixing flange 14 is formed on the entire circumference of the front end portion (right end portion in FIG. 1) of the fixed frame 11 (see FIG. 4). An inward fixing flange 15 is formed on the entire circumference of the rear end portion (left end portion in FIG. 1) of the fixed frame 11.

  Here, front and rear and left and right mean front and rear and left and right in a state of facing the ventilation port from the outside of the outer wall W to which the fixed frame 11 is attached.

  The bottom plate portion 11c has an outlet 16 formed in the front side portion. As shown in FIG. 2, the outlet 16 opens in a rectangular shape and reaches both side portions of the bottom plate portion 11 c in the left-right direction. A filter frame 17 is attached to the peripheral edge of the outlet 16.

  The filter frame 17 is a rectangular frame, and has an outward flange portion 17a formed on the entire periphery of the upper end portion, and a filter 17b made of a metal mesh attached so as to cover the opening of the lower end portion. The filter frame 17 is fitted in a state in which the flange portion 17 a is engaged with the peripheral portion of the outlet 16 from the inside of the fixed frame 11.

  As shown in FIG. 1, the hood 12 is formed in a cylindrical shape having a rectangular cross section by a top plate portion 20 that extends downward toward the rear, left and right side plate portions 21 and 21, and a bottom plate portion 22. An outward fixing flange 18 is formed on the entire circumference of the front end portion of the hood 12 (see FIG. 2).

  Further, the hood 12 is fixed to the fixed frame 11 in a state where the front end portion is opened in a rectangular shape and the opening edge portion is inside the inner edge portion of the fixing flange 15 of the fixed frame 11. The hood 12 is fixed to the fixed frame 11 by abutting the fixed flange 15 of the fixed frame 11 against the fixed flange 18 of the hood 12 and using existing bolts and nuts.

  The hood 12 has a rear end portion that is rectangularly open, and a filter frame 19 that closes the opening is attached. The filter frame 19 is a combination of angle frames having an L-shaped cross section in a rectangular shape, and a filter 19a made of a wire mesh is attached to the inside.

  The top plate portion 20 of the hood 12 passes from a front end portion parallel to the top plate portion 11a of the fixed frame 11 through a curved portion that curves downwardly toward the rear, and from a rear end portion that slopes downward toward the rear. It is formed.

  The left and right side plate portions 21, 21 are formed to extend downward from both lateral ends of the top plate portion 20. As shown in FIG. 5, the front edge of the side plate portion 21 is located on the inner side of the fixing flange 15 of the fixing frame 11. The bottom plate portion 22 includes a front plate portion 22a that is parallel to the bottom plate portion 11c of the fixed frame 11, and a rear plate portion 22b that is inclined downward from the front plate portion 22a toward the rear.

  A rectangular inflow port 23 is provided at the center of the front side plate portion 22 a of the bottom plate portion 22. The inflow port 23 has both front and rear edge portions parallel to both front and rear direction end portions of the front plate portion 22a, and both left and right direction edge portions are also parallel to the left and right end portions of the front plate portion 22a.

  As shown in FIG. 5, the distance between the left edge (right edge) of the inflow port 23 and the left end (right end) of the front side plate portion 22a is equal to the front edge (rear edge) of the inflow port 23 and the front. It is formed wider than the distance from the front end portion (rear end portion) of the side plate portion 22a. This makes it difficult for rain and foreign matter moving downward through the left and right side plate portions 21, 21 of the hood 12 to enter from the inflow port 23.

  A filter frame 24 is attached to the peripheral edge of the inflow port 23. The filter frame 24 is a rectangular frame, and includes an outward flange portion 24a formed on the entire periphery of the upper end portion, and a filter 24b made of a metal mesh attached so as to cover the lower end portion. The filter frame 24 is fitted from the inside of the hood 12 to the peripheral edge of the inflow port 23 in a state where the flange portion 24a is locked.

  As shown in FIG. 1, the partition plate 13 includes a first partition plate 25 that divides the interior of the fixed frame 11 into upper and lower portions, and a second partition plate 26 that divides the interior of the hood 12 into upper and lower portions.

  The first partition plate 25 is located in the lower portion of the fixed frame 11 and is disposed above the bottom plate portion 11 c of the fixed frame 11. The 1st partition plate 25 is formed from the flat plate part 25a parallel to the baseplate part 11c of the fixed frame 11, and the front side plate part 25b which inclines downward toward the front from the front side edge of the flat plate part 25a.

  The flat plate portion 25a has a rectangular shape, both left and right end portions thereof are fixed to the left and right side plate portions 11b of the fixed frame 11, and the left and right side portions of the rear end edge are in contact with the fixing flange 15 of the fixed frame 11. ing.

  The vertical position of the flat plate portion 25a inside the fixed frame 11 can be set arbitrarily as long as the air discharge amount inside the outer wall can be secured above the fixed frame 11. For example, the distance between the fixed frame 11 and the bottom plate portion 11c may be set to be about 1/5 of the distance between the top plate portion 11a and the bottom plate portion 11c of the fixed frame 11.

  The front side plate portion 25b is rectangular, and both left and right end portions thereof are fixed to the left and right side plate portions 11b of the fixed frame 11, respectively. The front side plate portion 25b has a front end piece 25c that bends downward over the entire length in the left-right direction.

  Further, as shown in FIG. 3, the front side plate portion 25b has the front end piece 25c opposed to the fixed flange 14 of the fixed frame 11 over the entire length in the left-right direction. The front end piece 25 c is fixed to the lower end portion of the fixing flange 14 in a state where the front end piece 25 c is in contact with the bottom plate portion 11 c of the fixing frame 11 in the entire length in the left-right direction.

  The second partition plate 26 includes a flat plate portion 26a that is parallel to the front plate portion 22a of the bottom plate portion 22 of the hood 12, a rear plate portion 26b that extends downward from the rear edge of the flat plate portion 26a, and a flat plate portion 26a. The rectangular connecting piece 26c is fixed to the front end portion of the rim and extends forward.

  The flat plate portion 26 a has a rectangular shape, and both left and right end portions thereof are fixed to the left and right side plate portions 21 and 21 of the hood 12, respectively. The left and right side portions of the front end edge of the flat plate portion 26 a are in a state of abutting against the fixing flange 18 of the hood 12.

  The rear side plate portion 26 b is rectangular, and both left and right end portions thereof are fixed to the left and right side plate portions 21, 21 of the hood 12, respectively. The rear side plate portion 26b has a rear end piece 26d that bends by being inclined downward toward the rear over the entire length in the left-right direction.

  The rear end piece 26 d faces the rear plate portion 22 b of the bottom plate portion 22 of the hood 12. In addition, the rear end piece 26d is fixed to the rear side plate portion 22b in a state of being in contact with the rear side plate portion 22b over the entire length in the left-right direction.

  The connection piece 26c is fixed in a state where it overlaps the lower side of the flat plate portion 26a over the entire length in the left-right direction. The connection piece 26c is inserted into the lower side of the flat plate portion 25a of the first partition plate 25 when the fixing flange 15 of the fixing frame 11 is abutted against the fixing flange 18 of the hood 12 and the hood 12 is fixed to the fixing frame 11. It becomes a state.

  In this state, the first partition plate 25 and the second partition plate 26 constitute the partition plate 13. The partition plate 13 forms an intake passage 30 below the inside of the fixed frame 11 and the hood 12.

  Inside the fixed frame 11 and the hood 12, the intake passage 30 passes from the inflow port 23 between the partition plate 13 and the bottom plate portion 22 of the hood 12, and between the partition plate 13 and the bottom plate portion 11 c of the fixed frame 11, This leads to the outlet 16.

  The weather cover 10 of this embodiment is configured as described above. Next, the usage state of the weather cover 10 of this embodiment will be described with reference to the drawings.

  The weather cover 10 before use is stored in a warehouse or the like with the fixed frame 11 and the hood 12 separated. And the fixing frame 11 of the weather cover 10 conveyed to the spot is inserted into the ventilation opening from the inside of the outer wall W of the building. At this time, it arrange | positions so that it may become the inner side of the outer wall W in the state which the outflow port 16 of the fixed frame 11 faces the downward direction.

  Thereafter, the fixing flange 18 of the hood 12 is abutted against the fixing flange 15 of the fixing frame 11 while inserting the connecting piece 26 c of the second dividing plate 26 into the lower side of the flat plate portion 25 a of the first dividing plate 25 from the outside of the outer wall W. The Then, the fixing flanges 15 and 18 are joined together by existing bolts and nuts, and the fixing frame 11 and the hood 12 are integrated.

  Further, as shown in FIG. 6, an exhaust device (not shown) including an exhaust fan 40 is attached to the weather cover 10 in which the fixed frame 11 and the hood 12 are integrated via the fixed flange 14 of the fixed frame 11.

  As described above, the weather cover 10 attached to the ventilation port of the outer wall W has the intake passage 30 below the inside of the fixed frame 11 and the hood 12. For this reason, when the air inside the outer wall W is discharged by the operation of the exhaust fan 40, the air outside the outer wall W is sucked from the inlet 23 according to the air discharge amount, and passes through the intake passage 30 to the outlet. 16 is introduced into the outer wall W.

  Since the air outside the outer wall W is introduced into the outer wall W according to the amount of air discharged from the outer wall W, the inside of the outer wall W can be prevented from becoming negative pressure, and the inside of the outer wall is exhausted. It is possible to prevent an excessive load from being applied to the exhaust fan.

  Further, the weather cover 10 of this embodiment has an intake passage 30 below the inside of the fixed frame 11 and the hood 12. For this reason, it becomes possible to easily introduce the air outside the outer wall W into the outer wall W by replacing the existing weather cover.

  Furthermore, the front side plate portion 25b of the first partition plate 25 is inclined downward toward the front. The air discharged from the inside of the outer wall W moves upward toward the rear along the front side plate portion 25b of the inclined first partition plate 25. For this reason, air can be introduced into the outer wall W from the intake passage through the outlet while smoothly discharging air from the outer wall.

  Further, since the rear side plate portion 26b of the second partition plate 26 is fixed in contact with the rear side plate portion 22b of the bottom plate portion 22 of the hood 12, and the inlet 23 is formed in the bottom plate portion 22 of the hood 12, The inlet 23 is located at the lower part of the hood 12, and rainwater and foreign matter can be prevented from entering the intake passage 30 from the inlet 23.

  In addition, the intake passage 30 is independent of the upper portion of the fixed frame 11 and the hood 12 that serve as a passage for the air discharged to the outside of the outer wall W. For this reason, mixing of the air discharged to the outside of the outer wall W and the air guided to the inside of the outer wall W can be suppressed.

  The intake passage 30 does not form the inflow port 23 in the bottom plate portion 22 of the hood 12, and the rear plate portion 26 b of the second partition plate 26 and the bottom plate portion 22 of the hood 12 are separated from each other in the vertical direction. Also good.

  That is, the intake passage 30 may extend from the space between the second partition plate 26 and the bottom plate portion 22 of the hood 12 to the outlet 16 through the space between the first partition plate 25 and the bottom plate portion 11 c of the fixed frame 11. Good.

DESCRIPTION OF SYMBOLS 10 Weather cover 11 Fixed frame 11a Top plate part 11b Side plate part 11c Bottom plate part 12 Hood 13 Partition plate 14 Fixed flange 15 Fixed flange 16 Outlet 17 Filter frame 17a Flange part 17b Filter 18 Fixed flange 19 Filter frame 19a Filter 20 Top plate part 21 Side plate portion 22 Bottom plate portion 22a Front side plate portion 22b Rear side plate portion 23 Inlet 24 Filter frame 24a Flange portion 24b Filter 25 First partition plate 25a Flat plate portion 25b Front plate portion 25c Front end piece 26 Second partition plate 26a Flat plate portion 26b Rear Side plate portion 26c Connection piece 26d Rear end piece 30 Intake passage 40 Exhaust fan W Outer wall

Claims (3)

Attached to the peripheral edge of the ventilation hole of the outer wall, and includes a fixed frame having a top plate part, a bottom plate part and left and right side plate parts, and a hood attached to the fixed frame and formed downwardly toward the rear,
The hood has a top plate portion, a bottom plate portion, and left and right side plate portions, and a weather cover in which the inside of the front end portion of the hood communicates with the inside of the rear end portion of the fixed frame,
A partition plate that divides the inside of the fixed frame and the hood into upper and lower portions, and the partition plate is fixed in a state in which a front side plate portion is in contact with a bottom plate portion of the fixed frame; The partition plate and the bottom plate of the fixed frame are formed between the partition plate and the bottom plate portion of the hood inside the fixed frame and the hood. A weather cover having an air intake passage leading to the outlet through the space between the air outlet and the outlet.   The rear plate portion of the partition plate is fixed in a state of being in contact with the bottom plate portion of the hood, and has an inflow port in the bottom plate portion of the hood, and the inflow port communicates with the intake passage. Weather cover.   The weather cover according to claim 1 or 2, wherein a front side plate portion of the partition plate is inclined downward toward the front.

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