Air fan attachment frame with weather cover

Abstract

To provide an air fan attachment frame with a weather cover which can secure safety during maintenance check.SOLUTION: At the indoor side of an air fan attachment frame with a weather cover, an opening / closing door, to which an air fan is fixed through a hinge, is provided in an openable or closable manner. At the outdoor side, the weather cover is fixed to the air fan attachment frame so as to cover an air supply / exhaust port. At the weather cover, a net is installed so as to be attached to or detached from the indoor side when the opening / closing door is opened.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a ventilation fan mounting frame that covers an air supply and exhaust port provided on an outer wall surface and a weather cover connected thereto.

Background Art

[0002] In order to ventilate the interior of a building, an air supply and exhaust port is provided on the outer wall surface of the building, and a pressure ventilation fan (hereinafter referred to as a "ventilation fan") is installed. A weather cover 101 is installed to prevent wind and rain from entering through the air supply and exhaust port. In particular, as shown in FIG. 6, the weather cover 101 and ventilation fans provided in large buildings such as factories and large logistics warehouses are very large in size.

[0003] As shown in FIG. 3, a ventilation fan 102, a shutter 104, a filter 105, etc. are provided on the ventilation fan mounting frame 103. To perform maintenance on these, it is necessary to remove the large ventilation fan 102 fixed to the ventilation fan mounting frame 103 (in the case of the filter 105, only when there is no replacement door for the filter). This work involves a very heavy burden and danger at high places where there is no large workbench.

[0004] In addition, in the air passage 106 of the weather cover 101, for example, a pest control net and bird protection net 107 (hereinafter referred to as a "net") are provided at the air passage inlet 106a so that birds, bees, etc. do not enter and build nests. Since this net 107 is exposed outdoors, depending on the environment, frequent maintenance may be required. In this case, it is necessary to access the inside of the weather cover 101 from the outside.

[0005] In Patent Document 1, as shown in FIG. 4, a structure that can be attached and detached in a one-touch manner is disclosed so that the net 107 (referred to as a filter unit in Patent Document 1) can be easily replaced.

[0006] However, when replacing the net 107 of the weather cover 101 installed at a high place as shown in FIG. 6, it is necessary to construct a huge scaffold to create a working space or to perform the work by rope suspension, which is a dangerous work imposing an excessive burden on the workers. Due to such circumstances, the cost required for maintenance becomes extremely high. Also, the work may be postponed or cancelled depending on the weather.

[0007] Therefore, as shown in Patent Document 2 of FIG. 5, one side end of a frame 208 with a ventilation fan 202 attached thereto is attached by a hinge 209 to one side end of a mounting frame 203 installed on the indoor side of an outer wall 200, and the other side end of the frame (opening / closing door) 208 is detachably attached by a fastener 210 so as to be openable and closable, and a handle 211 is provided on the frame (opening / closing door) 208.

[0008] It is described that the frame (opening / closing door) 208 with the ventilation fan 202 attached thereto can be turned into an openable and closable door by removing the fastener 210, and access can be made from the indoor side to the ventilation fan 202, a shutter (not shown), a filter, and also the net 207 in the air passage 206 of the weather cover 201 and other accessories. In many cases, an inspection passage or the like is provided at a high place indoors, and since the indoors is not exposed to unpredictable gusts or strong winds like the outdoors, it can be said that the working environment is safer than the outdoors. Also, since it is not affected by the weather, there is no need to worry about adjusting the work schedule.

[0009] However, as shown in FIG. 3, in the case of a large-sized weather cover, in order to access and replace the net 107 provided at the air passage inlet 106a of the weather cover 101 through the deep ventilation fan mounting frame 103 provided with accessory equipment such as the ventilation fan 102, the shutter 104, and the filter 105, it is necessary to lean out and further look down into the weather cover 101 from above. The air passage 106 of the weather cover 101 is also large enough for a person to pass through, and the risk of accidentally falling outdoors during the maintenance work performed in an unstable position cannot be denied.

[0010] Further, when a rain shield 113 for preventing rain intrusion such as heavy rain is provided at the back (front side when viewed from the indoor side) of the net 107 provided at the air passage inlet 106a as shown in FIG. 3, the net 107 cannot be replaced from the indoor side.

[0011]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0012] In view of the above problems, an object of the present invention is to provide a ventilation fan mounting frame capable of enhancing safety during maintenance and inspection work and a weather cover installed thereon.

Means for Solving the Problems

[0013] The ventilation fan mounting frame to be fitted into the air supply and exhaust openings of the outer wall according to the present invention has an opening / closing door provided on the indoor side so as to be openable and closable via a hinge, a ventilation fan is fixed to the opening / closing door, and a weather cover is fixed to the ventilation fan mounting frame so as to cover the air supply and exhaust openings on the outdoor side. The weather cover is characterized in that a net is detachably installed from the indoor side when the opening / closing door is opened.

[0014] Further, the net installed on the weather cover is supported at the upper part of the vertical portion by a guide portion provided with an inclination so as to descend from the bent portion of the rear side plate toward the front side plate.

[0015] Furthermore, the guide portion is installed such that the upper surface of the periphery provided on the rear side plate side is at the same height as or higher than the height position of the bent portion of the rear side plate. The guide portion has a groove portion, and the frame portion of the net is inserted into the groove portion and slid to be attached to and detached from the weather cover.

[0016] The operator does not need to lean out and look into the vertical part of the weather cover, and can safely concentrate on the maintenance work.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same parts or corresponding parts are denoted by the same reference numerals. For convenience, when referring to left and right, it means left (reference sign "c") and right (reference sign "d") when looking from the building side to the outdoor side.

[0019] FIG. 1 is a view showing the weather cover 1 and the ventilation fan mounting frame 3 according to the present invention. The weather cover 1 is connected and fixed to a ventilation fan mounting frame 3 attached to an air supply and exhaust port provided in a vertical outer wall 200 of a building via a sealing plate such as a water stop plate (not shown). Further, in order to prevent rain from entering from the connection port 1e of the weather cover 1, it has a cylindrical shape bent in an L shape to open the air passage inlet 6a downward. The weather cover 1 is surrounded by a front side plate 1a bent in an L shape, a rear side plate 1b provided on the outer wall 200 side and bent downward by about 90° midway, and left and right side plates 1c and 1d, and the inside thereof is an air passage 6 through which air passes.

[0020] From the air passage inlet 6a of the air passage 6, the air passage surrounded by the front side plate 1a, the vertical part of the rear side plate 1b, and the left and right side plates 1c and 1d is referred to as a vertical part 6b, and a rain shield 13 for preventing rain from entering is provided in the vertical part 6b.

[0021] The rain shield 13 has a flat plate portion 13a having the width of the air passage 6 from the left side plate 1c to the right side plate 1d of the weather cover 1. The left and right ends 13c and 13d of the flat plate portion 13a are bent and fixed to the left and right side plates of the weather cover 1 with rivets or the like. The lower end 13e of the flat plate portion 13a is bent toward the front side plate 1a in a direction substantially perpendicular to the flat plate portion 13a. A plurality of rain shields 13 are installed at equal intervals in the vertical part 6b with the flat plate portion 13a inclined at about 45 to 80 degrees with respect to the horizontal plane.

[0022] Furthermore, a plurality of rain shields 13 installed in the vertical part 6b are provided such that the height of the upper end 13' of the rain shield 13 provided on the rear side plate 1b side is substantially the same as or slightly lower than the bent portion 1b' of the rear side plate 1b. And as it approaches the front side plate 1a side, the height position of the upper end 13' of the rain shield 13 is provided to be slightly lower. When the upper end 13' heights of the juxtaposed rain shields 13 are connected by a line, they are installed so as to have a gentle slope of about 10 to 20 degrees from the horizontal plane.

[0023] By arranging these rain shields 13 on the vertical portion 6b of the weather cover 1, it is possible to prevent raindrops from entering the room without obstructing the exhaust and smoothly drain rainwater.

[0024] Next, the ventilation fan mounting frame 3 will be described. An opening / closing door 8 is provided on the indoor side of the ventilation fan mounting frame 3. The opening / closing door 8 is a frame to which the ventilation fan 2 is fixed. One end of the opening / closing door is attached to the ventilation fan mounting frame 3 by a hinge 9, and the other end is installed in an openable manner with a catch clip (not shown). When the opening / closing door 8 is opened, it is possible to easily access the shutter 4 that operates integrally with the ventilation fan 2 and the filter 5 installed in the ventilation fan mounting frame 3 without removing the ventilation fan 2. Also, with respect to the filter 5, a filter replacement door 5a is provided on the side surface portion of the ventilation fan mounting frame 3 so that the filter 5 can be replaced without opening the opening / closing door 8.

[0025] As shown in FIGS. 1 and 2, the net 7 is provided above the upper end 13' of the rain shield 13 of the weather cover 1. As shown in FIG. 2(a), it can be replaced from the indoor side with the opening / closing door 8 opened and the filter 5 removed. The net 7 has a rectangular net portion 7a and a frame portion 7b. The net 7 is provided above the vertical portion 6b. Specifically, when pulling out the net 7 to the indoor side, the frame portion 7b is supported so as to be positioned above the bent portion 1b' so as not to get caught on the corner of the bent portion 1b' of the rear side plate 1b. Then, the net 7 is supported by the guide portion 14 so as to be inclined at about 5 to 15 degrees downward from the rear side plate 1b toward the front side plate 1a side so that the entire net 7 can be smoothly pulled out to the indoor side.

[0026] The guide part 14 will be described. At the upper part inside the vertical part 6b of the weather cover 1, a peripheral edge 15 is provided along the front side plate 1a, the rear side plate 1b, and the left and right side plates 1c and 1d. The upper surface of the peripheral edge 15b provided on the rear side plate 1b side is installed at a position that is the same as or higher than the height position of the bent part 1b' of the rear side plate 1b. The upper surfaces of the peripheral edges 15c and 15d on the left and right side plates 1c and 1d sides are fixed with an inclination of about 5 to 15 degrees so as to slope downward from the rear side plate 1b toward the front side plate 1a.

[0027] As shown in Fig. 2(a), the outer peripheral side of the peripheral edge 15 (15d) (on the right side plate 1d side) is bent and fixed to the right side plate 1d with a rivet or the like (not shown) (the same applies to the front side plate 1a, the rear side plate 1b, and the left side plate 1c).

[0028] On the upper surface of the peripheral edge 15, guide plates 16 are provided on three sides: the front side and the left and right sides (referred to as the front side guide plate 16a, the left side guide plate 16c, and the right side guide plate 16d respectively, and these three are also collectively referred to as the guide plate 16). The left and right side guide plates 16 have a fixed surface part 17 fixed on the peripheral edge 15 as shown in Figs. 2(b) and 2(d), and a guide part 18 that slidably supports the frame part 7b of the net 7. The fixed surface part 17 and the guide surface part 18 are bent at different levels, and the frame part 7b of the net 7 is slidably fitted into the groove part 19 formed by the guide surface part 18 and the upper surface of the peripheral edge 15.

[0029] Also, as shown in Fig. 2(c), the front side guide plate 16a is provided with a guide surface part 18a without a fixed surface part on the front side peripheral edge 15a. A stopper surface 20 is provided at the rear side end of the guide surface part 18a. The stopper surface part 20 is a surface formed by bending the rear side end of the guide surface part 18 of the front side guide plate 16a upward. When the frame part 7b of the net 7 inserted into the groove part 19 from the indoor side slides and hits the stopper surface 20, the frame part 7b is guided into the groove part 19 on the front side, and the net 7 is smoothly supported by the guide part 14. The frame part 7b of the net 7 is fixed to the peripheral edge 15 with bolts.

[0030] Since the bent portion 1b' of the rear side plate 1b of the weather cover 1 is at approximately the same height as the lower end of the ventilation fan mounting frame 3, when the opening / closing door 8 is opened from the indoor side, the operator can immediately access the net 7 closely. By inserting the frame 7b of the net 7 into the groove portion 19 and sliding the net 7 along the groove portion 19, the operator can easily attach the net 7 to the weather cover 1, and by pulling the net 7 forward from the groove portion 19, the net 7 can be removed from the weather cover 1. That is, the operator does not need to lean out and look into the vertical portion 6b of the weather cover 1, and can safely concentrate on the maintenance work.

[0031] The structure of the guide portion 14 is not limited to this. For example, the peripheral edge 15 may simply be in a U-shape, and the frame portion 7b of the net 7 may be slid into the groove portion thereof.

Explanation of Reference Numerals

[0032] 1, 101, 201 Weather cover 2, 102, 202 Ventilation fan 3, 103, 203 Ventilation fan mounting frame 4, 104 Shutter 5, 105 Filter 6, 106, 206 Air passage 7, 107, 207 Net 8, 208 Opening / closing door 9, 209 Hinge 13, 113 Rain shield 14 Guide portion 15 Peripheral edge 16 Guide plate 19 Groove portion 20 Stopper surface portion

Claims

1. The ventilation fan mounting frame to be fitted into the air supply and exhaust openings on the outer wall has an opening / closing door provided on the indoor side via a hinge so as to be openable and closable, and a ventilation fan is fixed to the opening / closing door. On the outdoor side, a weather cover is fixed to the ventilation fan mounting frame so as to cover the air supply and exhaust openings. The weather cover is characterized in that a net is detachably installed from the indoor side when the opening / closing door is opened. A ventilation fan mounting frame with a weather cover.

2. The net is supported by a guide portion provided with an inclination so as to descend from the bent portion of the back side plate toward the front side plate at the upper part of the vertical portion of the weather cover. The ventilation fan mounting frame with a weather cover according to Claim 1.

3. The guide portion is installed such that the upper surface of the periphery provided on the back side plate side is at the same height position as or higher than the height position of the bent portion of the back side plate. The ventilation fan mounting frame with a weather cover according to Claim 2.

4. The guide portion has a groove portion, and the frame portion of the net is inserted into the groove portion and slid to detach the net from the weather cover. The ventilation fan mounting frame with a weather cover according to Claim 2 or 3.

Images