JP2002081708A - Pipe structure of ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage and breakage of an outer wall due to connection of a pipe and reduce manufacturing cost of an outdoor hood. SOLUTION: A ventilation pipe extending through an outer wall is provided. On the technical assumption being the pipe structure of a ventilation device formed that a resistor is provided at the opening on the indoor side of the ventilation pipe and meanwhile, and an outdoor hood is disposed at the opening part on the outdoor side of the ventilation pipe, a back plate is situated on the back of the outdoor hood, the insertion opening of the ventilation pipe is formed in the back plate, and the tip on the outdoor side of the ventilation pipe is inserted in the insertion opening with a downward gradient of a given angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilating apparatus for performing natural ventilation of a living room, and more particularly to a structure for connecting a pipe penetrating an outer wall to an outdoor hood.

[0002]

2. Description of the Related Art Since indoor air is contaminated by exhalation or smoking, it is necessary to provide a house structure for performing natural ventilation with fresh outside air. In recent years, the increase in reinforced concrete houses and the spread of aluminum sash windows have improved the airtightness of houses compared to conventional houses. Ventilation vents for natural ventilation are provided in appropriate places in houses separately from windows and kitchen ventilation fans ( In some cases, ventilation holes are provided.

Conventionally, as shown in FIG. 4, a ventilation pipe 2 is disposed on an outer wall 1 to connect a room R to an outdoor T, and a hood (ventilator) 3 for rainwater protection is disposed outside. The guide pipe (connection pipe) 4 provided in the hood 3 and the ventilation pipe 2 are connected to allow ventilation. Reference numeral 5 denotes a ventilation device (register) on the indoor side, and reference numeral 6 denotes a connection pipe of the register.

The outdoor hood 3 and the guide pipes 4 and 6 of the register 5 are both inserted and connected inside the ventilation pipe 2. This is because the guide pipes 4 and 6 on the indoor side and the outdoor side are easily fitted without projecting the ventilation pipe 2 provided in the outer wall from the wall surface.

However, in such a ventilation structure,
As the moisture (moisture) contained in the warm air sent from the indoor side goes outside, water drops as the outside air temperature rises, and there is a problem that the water droplets permeate on the outdoor wall around the hood. This is because water droplets flowing under the ventilation pipe 2 go under the guide pipe 4 at the connection portion of the guide pipe 4 on the outdoor side.

[0006] This problem is not limited to the aesthetic problem that the water droplets stain the wall surface due to aging, and in cold regions such as Hokkaido and Tohoku, the dripping water droplets freeze in severe winter, causing the outer wall to peel off and damage. , Cause serious problems.

Therefore, the present inventor has proposed a guide pipe (connecting pipe) 4 provided on an outdoor hood 3 in order to solve such a problem.
A connection structure has been proposed in which the connection relationship between the air pipe 2 and the ventilation pipe 2 penetrating the outer wall is reversed, and the outer circumference of the ventilation pipe 2 is held by the guide pipe 4 (Japanese Patent Laid-Open No. 09-166341).
issue).

As shown in FIG. 5, the positional relationship between the outer pipe (4) and the inner pipe (2) is reversed from that of the conventional pipe connection. And the problem of breakage has been dramatically reduced. This is because the water droplet A generated in the ventilation pipe 2 flows into the guide pipe 4 holding the ventilation pipe 2 as it is, and is discharged outside through the guide pipe 4.

Although the technology proposed by the present inventor has a relatively simple structure, it has attracted attention as a technology for remarkably improving the housing problem peculiar to cold regions caused by dew condensation water, and has been highly evaluated in various fields.

[0010]

However, the connection structure of the ventilation pipe proposed by the present inventor (Japanese Patent Laid-Open No. 09-1663).
No. 41) still has room for improvement.

In order for the guide pipe (connecting pipe) 4 provided on the outdoor hood 3 to hold the outer periphery of the ventilation pipe 2 penetrating the outer wall without any gap, the guide pipe 4 provided on the back of the outdoor hood 3 has high dimensional accuracy. And as a result outdoor hood 3
This is because the manufacturing cost increases.

An object of the present invention is to further reduce the manufacturing cost of an outdoor hood provided that the same action and effect of reliably preventing the outer wall from being soiled / damaged is ensured.

[0013]

In order to achieve the above-mentioned object and to achieve the object, a pipe structure of a ventilation device according to the present invention is provided with a ventilation pipe penetrating an outer wall, and the ventilation pipe has an indoor opening. On the technical premise of a pipe structure of a ventilation device in which an outdoor hood is provided at an outdoor opening of a ventilation pipe while disposing a register, a back plate is provided on the back of the outdoor hood, and the ventilation pipe is provided on the back plate. Is formed, and the outdoor end of the ventilation pipe is inserted into the insertion opening at a predetermined rate of descent.

[0014]

The pipe structure of the ventilating apparatus according to the present invention can be easily constructed simply by inserting a ventilation pipe penetrating the outer wall into the opening of the back plate provided on the back of the outdoor hood. The same operation and effect as the pipe connection method proposed in 166341 can be obtained.

In the present invention, no guide tube is formed in the outdoor hood. Simply provide an opening in the back plate of the outdoor hood,
It is only necessary to insert a ventilation pipe into this opening.

As a result of eliminating the need for a guide tube, the manufacturing cost of the outdoor hood is significantly reduced. The construction efficiency when the present invention is used is almost the same as the conventional one. However, if the caulking around the opening of the back plate is unnecessary, it can be omitted even if it is omitted.

[0017]

1 and 2 show one embodiment of the structure of a ventilation device according to the present invention. The basic structure is
It is the same as a conventional ventilator, and a ventilation pipe 1
1 to connect the indoor R and the outdoor T so as to allow natural ventilation, while the outdoor T has a hood (ventilator) 12
And an opening 14 is formed in a back plate 13 provided on the back surface of the hood 12. The ventilation pipe 1 is inserted into the opening 14.
The guide pipe 1 is guided to fix the ventilation pipe 11 so that the indoor and outdoor air flows naturally. Reference numeral 15 is a ventilation device (register) on the indoor side, 17 is a flange for mounting a hood,
Reference numeral 18 denotes a screw hole. Reference numeral 19 denotes a construction hole provided on the outer wall 10, and reference numeral 22 denotes an opening provided on the lower surface of the hood 12.

The hood 12 has a back plate 13 on the back as shown in the figure. Preferably, a member projecting rearward (outer wall side) from the back plate 13 is not provided on the outer peripheral portion of the hood 12 so that the back plate 13 is in close contact with the outer wall 10 when the hood 12 is attached. For example, as shown in FIG.
When the frame F protruding rearward from the back plate 13 is provided, the structural strength of the hood 12 is increased, but the outer wall 10 and the back plate 13 do not adhere. When a gap is formed between the back plate 13 and the outer wall 10, there is a concern that heat insulation may be deteriorated due to loosening due to use over time. Of course, the problem of heat insulation can be solved by other construction considerations such as caulking, but excessive caulking does not produce very favorable results such as deteriorating the appearance quality of the construction site.

When the ventilation pipe 11 is disposed in the hole 19 for construction, the ventilation pipe 11 is gently inclined downward from the register 15 toward the hood 12. In FIG. 1, the inclination angle is shown large in order to clarify the lowering state. However, in practice, a large inclination angle is not required as long as the condensed water surely flows toward the hood 12.

It is, of course, possible to discharge the dew condensation water outdoors while arranging the ventilation pipe 11 horizontally (or ascending). Because the dew condensation water flows down the inner circumference lower surface of the pipe, if the inner circumference lower surface of the pipe has a certain descent rate, the dew condensation water flows down, and whether the axis of the pipe is horizontal or not is directly related to the drainage action. This is because there is no relationship. However, using a general pipe having a circular cross section is more advantageous in terms of cost and simplifies construction than providing a V-shaped or U-shaped downwardly inclined guide groove on the lower surface of the ventilation pipe 11.

The descending rate of the ventilation pipe 11 may be a value such that the water drops flow down naturally. Although it depends on the material of the ventilation pipe 11, if the inclination rate exceeds at least 1%, the structure will be practically usable. Preferably, the inclination is 1 to 3%. When the penetration pipe 11 is, for example, 40 cm, the lower surface step between the outdoor side and the indoor side is 0.2 to 2 cm. Of course, this numerical value is appropriately changed in design depending on various conditions such as the thickness of the outer wall, the length of the ventilation pipe 11, the material of the ventilation pipe 11, the outside air temperature condition, and the like.

The opening 14 only needs to have a diameter that allows the outdoor end of the ventilation pipe 11 to be inserted. Even if the diameter of the opening 14 is slightly larger than the outer circumference of the ventilation pipe 11, the effect on use is extremely large. Few. The gap generated between the ventilation pipe 11 and the opening 14 is filled with a closing means such as caulking. It is preferable to provide a closing means (for example, caulking) for this portion. However, even in cold regions such as Hokkaido, caulking of this part is not absolutely necessary. This is because even if there is a gap, the outer wall of the exposed portion of the ventilation pipe 11 is covered and protected by the hood 12, and it is considered that there is no factor that significantly deteriorates as compared with other general surfaces of the outer wall.
Note that the diameter of the opening 14 is not particularly limited, but is set to a margin of several millimeters in order to enable the fitting to at least maintain a constant watertight state by caulking. The diameters of pipes (so-called PVC pipes, spiral ducts) used for ventilation equipment are standardized, but for example, the outside diameter of the ventilation pipe 11 is 106 mm.
In this case, the diameter of the opening 14 is set to 107 mm.

When the present invention is applied to a newly-built house, the length of the ventilation pipe 11 can be freely set, so that the ventilation pipe 11 is projected from the outer wall surface, and the protruding portion is connected to the hood 1.
The guide may be guided to the second opening 14. In the case of reform,
As described above, the back surface 13 forming the opening 14 is connected to the outer wall 1.
If it is arranged at a position where it can be in close contact with 0, it can be easily changed to a new ventilation structure.

According to such a structure, as shown by an arrow A in FIG.
It is naturally discharged to the outside via the hood 12 as it is.

The ventilation device according to the present invention is preferably applied to a ventilation system using a forced fan as a ventilation device (register) in a room, but is separately provided in a ventilation system without a forced fan or in a room (or another room). The present invention can be similarly applied to a natural ventilation type system having a forced exhaust device.

Although the mounting flange (17) of the hood 12 is provided only on the upper side in the above embodiment, the flange (17) may be provided on the left, right, and lower surfaces.

[0027]

As described above, according to the pipe structure of the ventilation device according to the present invention, it is possible to reliably prevent the outer wall from being soiled / damaged while further reducing the manufacturing cost of the outdoor hood.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a pipe structure according to the present invention.

FIG. 2 is a diagram showing an example of a hood according to the present invention.

FIG. 3 is a diagram showing another example of the hood according to the present invention.

FIG. 4 is a diagram illustrating a conventional pipe structure.

FIG. 5 is a diagram illustrating a tube structure proposed by the present inventors.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Outer wall 11 Ventilation pipe 12 Hood 13 Backboard 14 Opening 15 Register 17 Flange 18 Screw hole 19 Construction hole 22 Opening F Frame R Indoor T Outdoor

Claims (1)

[Claims] 1. A ventilating pipe structure in which a ventilation pipe penetrating an outer wall is provided, and a register is disposed at an indoor opening of the ventilation pipe, and an outdoor hood is disposed at an outdoor opening of the ventilation pipe. A back plate provided on the back surface of the outdoor hood, an insertion opening for a ventilation pipe is formed in the back plate, and the outdoor end of the ventilation pipe is inserted into the insertion opening at a predetermined rate of descent. Equipment tube structure.