JPH09166341A - Pipe connection structure for ventilating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely prevent water drops from adhering to a wall surface around a hood of a ventilating port by setting an inner diameter of a guide pipe of an outside hood to be larger in a predetermined millimeter unit than an outer diameter of a ventilation pipe, and constructing the structure such that the guide pipe of the outdoor hood encloses the outside of an opening in the ventilation pipe. SOLUTION: While the inside R of a room and the outside T of the same are communicated with each other by disposing a ventilation pipe 11 on an outer wall 10 while a hood 12 tar avoiding rainwater is disposed on the outside T, and a guide pipe (connection pipe) 14 provided on the hood 12 and the ventilation pipe 11 are connected with each other to exhaust indoor air to the outside. Herein, the guide pipe 14 encloses an outdoor side end of the ventilation pipe 11 from the outside and is fitted to the ventilation pipe 11. An inner diameter of the guide pipe 14 is set to be larger than an outer diameter of the ventilation pipe 11 such that the ventilation pipe 11 can be inserted into it. With such a joint structure, drain flowing from the indoor side R to the outdoor side T falls down on the guide pipe 14 without staying at a connection step part of the pipe and is discharged to the outside of the room through the hood 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device for natural ventilation in a house, and more particularly to a connecting structure for connecting a ventilation pipe and an outdoor hood.

[0002]

2. Description of the Related Art Since the air inside a house is contaminated by exhalation, smoking, etc., it is necessary to provide a ventilation device for natural ventilation with fresh outside air. In particular, recently, the number of reinforced concrete houses and aluminum sashes have improved the airtightness of houses compared to conventional houses, and as a result, the number of cases where ventilation openings (ventilation openings) are provided at appropriate places in the houses in addition to windows has increased. ing.

As shown in FIG. 5, a ventilation port generally has a ventilation pipe 2 on an outer wall 1 to connect the room to the outdoors, and a hood (ventilator) 3 to protect the rain from the outdoors. A guide pipe (connection pipe) 4 provided in the hood 3 and the ventilation pipe 2 are connected to each other to enable ventilation. In addition, reference numeral 5 is a ventilation device (register) on the indoor side,
Reference numeral 6 is a guide pipe (connection pipe) of the register.

The outdoor hood 3 and the guide tubes 4 and 6 of the register 5 are both fitted into the ventilation pipe 2 to be connected. This is for easily fitting and connecting the indoor side and outdoor side guide tubes 4 and 6 without causing the ventilation pipe 2 provided in the outer wall to protrude from the wall surface.

[0005]

By the way, in such a conventional ventilation structure, as the humidity (moisture) contained in the warm air blown from the indoor side goes to the outside, water drops are generated due to the outside air temperature. There was a problem that the water drops and the water droplets permeate the outdoor wall around the hood. This problem is not limited to the aesthetic problem that water drops stain the wall surface,
In cold regions such as Hokkaido and Tohoku, water drops freeze during the severe winter, causing problems such as peeling damage to the outer wall.

For this reason, it has been proposed recently to devise a technique such as integrally forming a guide for preventing water drip on a hood to be placed outdoors. This is because by forming a guide at the tip of the hood, water is discharged outward at a position farthest from the outer wall 1. It has been confirmed that the water drain guide formed on the hood is effective in that moisture in the exhaust does not adhere to the wall surface. However, even with the drainage guide, a considerable proportion of the problem that water droplets adhere to the outer wall surface occurs. Various types of drainage guides have been proposed, but the reality is that there is still no structure that can realize the complete effect.

Therefore, an object of the present invention is to completely prevent the adhesion of water drops on the wall surface around the hood of the ventilation port.

[0008]

In order to achieve the above object and achieve the object, the pipe connecting structure of the ventilation device according to the present invention is provided with a ventilation pipe penetrating an outer wall, and the indoor side opening portion of the penetrating pipe. While fitting the guide pipe of the register to the, while the pipe connection structure of the ventilation device that fits and connects the guide pipe of the outdoor hood to the outdoor side opening of the penetrating pipe is a technical premise,

The inner diameter of the guide pipe of the outdoor hood is set to be larger than the outer diameter of the ventilation pipe by a predetermined millimeter unit so that the guide pipe of the outdoor hood can be fitted so as to wrap around the outer periphery of the opening of the ventilation pipe.

In addition, in order to reliably prevent water dripping around the existing outdoor hood, the guide tube of the outdoor hood may be designed to project backward from the back plate of the outdoor hood by a predetermined dimension.

[0011]

In the pipe joint structure according to the present invention, contrary to the conventional joint structure, the open end of the ventilation pipe penetrating through the outer wall is fitted into the guide pipe of the outdoor hood. The guide pipe of the outdoor hood always wraps the end of the ventilation pipe from the outside regardless of the existing structure and keeps the fitting connection state.

According to this structure, since the step gap at the connecting portion of the pipe extends toward the indoor side, even if the air moisture flowing from the indoor side to the outdoors is turned into water droplets, the moisture is still present on the outer wall surface. There is no leakage. Almost all the water can be sent to the outdoor hood at the connection step portion, and it is possible to reliably prevent problems such as stains on the wall surface and peeling of the wall surface in the severe winter season.

When the existing ventilation hood is already installed, it is difficult to fit the guide pipe of the hood so as to wrap the opening end of the ventilation pipe housed in the wall surface from the outside. This is because the ventilation pipe extends only to the inside of the outer wall surface, and therefore, when trying to connect the guide pipe, there is no choice but to fit (insert) the guide pipe inside the ventilation pipe.

However, if the guide tube of the outdoor hood is made to project rearward by a predetermined dimension from the back plate, the guide tube can be fitted from the outside by turning the outer wall surface around the opening end of the ventilation pipe by a slight dimension. This makes it possible to prevent water leakage even with an existing ventilation device (outdoor hood).

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a ventilator structure according to the present invention. Like the conventional ventilator, a ventilation pipe 11 is arranged on the outer wall 10 to connect the room R and the outdoors T so that natural ventilation is possible. A hood (ventilator) 12 for preventing rainwater is arranged in the outdoor T, and a guide pipe (connection pipe) 14 provided in the hood 12 and a ventilation pipe 11 are connected to allow indoor air to be discharged to the outside air. Reference numeral 15 is a ventilation device (register) on the indoor side, and reference numeral 16 is a guide pipe (connection pipe) of the register 15.

The guide pipe 14 wraps and fits the outdoor end of the ventilation pipe 11 from the outside. When applied to a new house, the length dimension of the ventilation pipe 11 can be freely set, so that the ventilation pipe 11 may be projected from the outer wall surface and the protruding portion may be fitted into the guide pipe 14. Therefore, in this case, the guide tube 14 may be opened on the same plane as the back plate 20 of the hood 12 as shown in FIG.
It is not necessary to project the guide tube 14 from the above. When the opening of the guide tube 14 is flush with the back plate 20 as described above, the back plate 20 can be placed in close contact with the outer wall 10 by connecting to the ventilation pipe 11.

The inner diameter of the guide pipe 14 is set larger than the outer diameter of the ventilation pipe 11 so that the ventilation pipe 11 can be fitted therein. The diameter allowance of the guide tube 14 is not particularly limited, but at least a marginal size is set in units of several millimeters in order to enable fitting so that a constant watertight state can be maintained by caulking. The diameters of the pipes (so-called PVC pipes and spiral ducts) used for ventilation equipment are standardized. For example, when the outer diameter of the ventilation pipe 11 is 106 mm, the guide pipe 14
The inner diameter of is set to 107 mm.

The guide pipe 16 of the indoor ventilation device may be fitted into the ventilation pipe 11 as in the conventional connecting structure. This is because unlike the outdoor T, the indoor side does not cause a problem such as freezing of water drops. However, the ventilation pipe 11 may be projected and fitted into the guide pipe 16 of the register as in the case of the guide pipe 14 on the outdoor side as long as the appearance of the room is not impaired.

According to such a joint structure, as shown by the arrow A in FIG. 1, the exhaust moisture flowing out from the room R to the outside T does not stagnate at the connecting step portion of the pipe and naturally stays as it is. It is dropped to the 14 side and discharged to the outside through the hood 12. In particular, when the hood 12 is provided with a water draining guide, the water droplets can be almost completely discharged outdoors.

Further, the inner diameter of the guide pipe 14 is the ventilation pipe 11
Since it is set with a slight margin from the outer diameter of No. 1, when the guide tube 14 is slightly inclined downward toward the outside according to this margin, water droplets will not wrap around the gap at the connection step portion. This can be completely prevented, and therefore, the outer wall can be more reliably prevented from being contaminated by exhaust water drops and the outer wall being damaged by freezing. It is sufficient for the guide tube 14 to have an inclination angle of 1 degree or less.

FIG. 3 shows an example of an outdoor hood applied to an existing ventilation facility. This outdoor hood 30
The guide tube 34 is configured to project rearward from the back plate 31.

Since the conventional ventilation structure is premised on that the guide pipe (outdoor pipe) of the outdoor hood is fitted into the ventilation pipe (outer wall inner pipe) as described above, the ventilation pipe is projected from the outer wall surface. Not not. In other words, in the conventional ventilation equipment, the ventilation pipe is stored inside the outer wall,
It is impossible to fit it inside the guide tube of an outdoor hood.

Therefore, when the guide pipe 34 of the outdoor hood 30 is projected from the back plate 31, the outer wall surface of the existing ventilation pipe 11 is cut to wrap the exposed open end of the ventilation pipe 11 from the outside. The protruding guide tube 34 can be fitted. An example of such a joint structure is shown in FIG.

Since the opening end of the ventilation pipe 11 is buried in the outer wall 10, the outer peripheral portion of this opening is cut by an appropriate means. The cutting depth, that is, the exposed dimension of the ventilation pipe 11 is, for example, about 10 mm. Is enough. Since the guide pipe 34 is fitted from the outside, all the water flows to the guide pipe 34 as it is at the connection step portion, and even if the fitting length of the connection portion is short, all the exhausted water can be discharged to the outside through the hood 30. Is.

The ventilator according to the present invention is preferably applied to a ventilating system using a forced fan as an indoor ventilator (register), but a ventilating system having no forced fan or a room (or a separate room). It can also be applied to a naturally ventilated system that has a separate forced exhaust device.

[0026]

As described above, according to the pipe connection structure of the ventilation device of the present invention, it is possible to reliably prevent the wall surface of water drops from adhering to the hood of the ventilation port.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a back surface of the outdoor hood shown in FIG.

FIG. 3 is a perspective view showing a rear structure of an outdoor hood into which an existing ventilation pipe is fitted.

FIG. 4 is a side sectional view showing an example of a fitted state with an existing ventilation pipe.

FIG. 5 is a cross-sectional view showing a conventional ventilation structure.

[Explanation of symbols]

 10 Outer wall 11 Ventilation pipe 12,30 Outdoor hood (ventilator) 14, 16, 34 Guide pipe 15 Ventilator (register) 20, 31 Rear plate R Indoor T Outdoor

Claims (2)

[Claims] 1. A ventilation pipe is provided which penetrates an outer wall, and a guide pipe of a register is fitted to an indoor opening of the penetration pipe while a guide pipe of an outdoor hood is fitted and connected to an outdoor opening of the penetration pipe. In the pipe connection structure of the ventilation device, the inner diameter of the guide pipe of the outdoor hood is set to be larger than the outer diameter of the ventilation pipe by a predetermined millimeter unit, and the guide pipe of the outdoor hood wraps around the outer periphery of the opening of the ventilation pipe and is fitted. A pipe connection structure of a ventilation device characterized by being able to do so. 2. The pipe joint structure for a ventilation structure according to claim 1, wherein the guide pipe of the outdoor hood is protruded rearward from the rear plate of the outdoor hood by a predetermined dimension.