JP3135208B2 - Ventilation pipe connection structure - Google Patents

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 performing natural ventilation in a house, and more particularly to a connection structure between a ventilation pipe and an outdoor hood.

[0002]

2. Description of the Related Art Since indoor air is contaminated by exhalation or smoking, a ventilation device for performing natural ventilation with fresh outside air is required. In particular, the increase in the number of reinforced concrete houses and aluminum sashes has improved the airtightness of houses compared to conventional houses, and this has led to an increase in the number of cases where ventilation openings (vents) are provided separately from windows at appropriate places in houses. ing.

As shown in FIG. 5, generally, a ventilation pipe is provided on an outer wall 1 to communicate between indoor and outdoor, while a hood (ventilator) 3 for rainwater is provided outside. A guide pipe (connection pipe) 4 provided in the hood 3 and the ventilation pipe 2 are connected to enable ventilation. In addition, the code | symbol 5 is a ventilation device (register) of the indoor side,
Reference numeral 6 denotes a guide tube (connection tube) of the register.

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

[0005]

By the way, in such a conventional ventilation structure, as the humidity (moisture) contained in the warm air sent from the indoor side goes outward, water droplets are generated by the outside air temperature. There is a problem that these water droplets permeate on the outdoor wall around the hood. This problem is not just an aesthetic problem that water drops stain the walls,
In cold regions, such as Hokkaido and Tohoku, the dripping water drops during severe winter, causing problems such as peeling and damaging the outer wall.

For this reason, there has been proposed a contrivance in which a guide for preventing water dripping is integrally formed with a hood which is recently arranged outdoors. By forming a guide at the tip of the hood, water is discharged outward at a position farthest from the outer wall 1. The drainage guide formed on the hood has been confirmed to be somewhat effective in preventing moisture in the exhaust from adhering to the wall surface. However, even with the drain guide, a considerable problem of water droplets adhering to the outer wall surface occurs. Various drainage guides have been proposed, but the fact is that there is still no structure that can achieve the perfect effect.

SUMMARY OF THE INVENTION It is an object of the present invention to completely prevent water droplets from adhering to a wall surface around a hood of a ventilation opening.

[0008]

In order to achieve the above-mentioned object, a pipe connection structure for a ventilator according to the present invention comprises a ventilation pipe penetrating an outer wall and connecting an indoor side and an outdoor side. provided, the indoor side while fitting the register of the guide tube into the opening, technical premise tube connection structure of a ventilating device for fitting connecting outdoor hood guide tube outdoor side opening of the vent pipe of the vent pipe The inner diameter of the guide tube of the outdoor hood is set larger by a predetermined millimeter than the outer diameter of the ventilation pipe so that the guide pipe of the outdoor hood can be fitted and connected while wrapping the outer periphery of the opening of the ventilation pipe. .

The inside diameter of the guide pipe of the outdoor hood is set larger by a predetermined millimeter than the outside diameter of the ventilation pipe, so that the guide pipe of the outdoor hood wraps around the opening of the ventilation pipe and can be fitted.

In order to surely prevent water dripping around the existing outdoor hood, a guide tube of the outdoor hood may be designed to project rearward from the back plate of the outdoor hood by a predetermined distance.

[0011]

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

According to this structure, since the step gap at the connection portion of the pipe extends toward the indoor side, even if the air moisture flowing from the indoor side to the outdoor is turned into water droplets, the moisture is removed from the outer wall surface. No leakage. It is possible to almost completely send all moisture to the outdoor hood at the connection step, and it is possible to reliably prevent problems such as wall surface contamination and wall surface peeling during severe winter.

When an existing ventilation hood is already installed, it is difficult to fit the guide pipe of the hood so as to wrap the open end of the ventilation pipe housed in the wall from the outside. This is because the ventilation pipe extends only up to the inside of the outer wall surface, so that the only way to connect the guide pipe is to fit (insert) the guide pipe inside the ventilation pipe.

However, when the guide tube of the outdoor hood is projected backward from the back plate by a predetermined distance, the outer wall surface around the opening end of the ventilation pipe is slightly turned to fit the guide tube from the outside. This makes it possible to reliably 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 the structure of a ventilation device according to the present invention. Like a conventional ventilation device, a ventilation pipe 11 is disposed on an outer wall 10 to connect a room R and an outdoor T so that natural ventilation is possible. A hood (ventilator) 12 for preventing rainwater is disposed outside T, and a guide pipe (connection pipe) 14 provided in the hood 12 is connected to a ventilation pipe 11 so that indoor air can be discharged to the outside air. Reference numeral 15 denotes a ventilation device (register) on the indoor side, and reference numeral 16 denotes a guide pipe (connection pipe) of the register 15.

The guide tube 14 is fitted around the outside end of the ventilation pipe 11 from outside. When applied to a new house, the length of the ventilation pipe 11 can be freely set, so that the ventilation pipe 11 may be protruded from the outer wall surface and the protruding portion may be fitted into the guide tube 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.
There is no need to particularly protrude the guide tube 14 from the guide tube. When the opening of the guide tube 14 is flush with the back plate 20, the back plate 20 can be arranged 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 of the guide tube 14 is not particularly limited, but is set to a margin of several millimeters in order to at least allow a certain degree of watertightness to be maintained by caulking. The diameters of pipes (so-called PVC pipes, spiral ducts) used for ventilation equipment are standardized, but for example, when the outer diameter of the ventilation pipe 11 is 106 mm, the guide pipe 14
Is 107 mm in inner diameter.

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

According to such a joint structure, as shown by an arrow A in FIG. 1, the exhaust water flowing from the room R to the outdoor T does not stagnate and accumulate at the connection step of the pipe, and the guide water naturally flows as it is. It falls to the side 14 and is discharged outside via the hood 12. In particular, when the hood 12 is provided with a drainage guide, water that has become water droplets can be almost completely discharged outdoors.

The inner diameter of the guide tube 14 is
Since the guide tube 14 is slightly inclined downward toward the outside in accordance with the allowance, the water droplet does not pass through the gap at the connection step because the outer diameter of the guide tube 14 is set to have a margin from the outer diameter of the guide tube 14. Thus, it is possible to completely prevent the outer wall from being contaminated by exhaust water droplets and from being damaged by freezing. An inclination angle of the guide tube 14 of less than 1 degree is sufficient.

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

The conventional ventilation structure is based on the premise that the guide pipe (outdoor pipe) of the outdoor hood is fitted into the ventilation pipe (inner pipe on the outer wall) as described above, so that the ventilation pipe protrudes from the outer wall surface. Not. In other words, in conventional ventilation equipment, the ventilation pipe is stored only inside the outer wall,
It is not possible to fit it inside the guide tube of the outdoor hood.

Therefore, when the guide pipe 34 of the outdoor hood 30 is projected from the back plate 31, by cutting around the outer wall surface of the existing ventilation pipe 11, the exposed opening end of the ventilation pipe 11 is wrapped from the outside. The protruding guide tube 34 can be fitted. FIG. 4 shows an example of such a joint structure.

Since the open end of the ventilation pipe 11 is buried in the outer wall 10, the outer peripheral portion of the opening is cut by an appropriate means, but the cutting depth, that is, the exposed dimension of the ventilation pipe 11 is, for example, about 10 mm. Is enough. Since the guide tube 34 is fitted from the outside, all the moisture flows directly into the guide tube 34 at the connection step portion, and even if the fitting length of the connection portion is short, all the exhausted moisture can be discharged outside via the hood 30. It is.

The ventilation device according to the present invention is preferably applied to a ventilation system using a forced fan for a ventilation device (register) in a room. However, a ventilation system without a forced fan or a room (or a separate room) is preferred. The present invention can be similarly applied to a natural ventilation type system having a separate forced exhaust device.

[0026]

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

[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 configuration 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 sectional view showing a conventional ventilation structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Outer wall 11 Ventilation pipe 12,30 Outdoor hood (ventilator) 14,16,34 Guide pipe 15 Ventilator (register) 20,31 Back plate R Room T Outdoor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 62-141131 (JP, U) Japanese Utility Model Utility Model 3-31235 (JP, U) Japanese Utility Model Utility Model 5-32932 (JP, U) Japanese Utility Model Utility Model 1 22934 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 7/00 F24F 7/04

Claims (1)

(57) [Claims] A ventilation pipe penetrating an outer wall and connecting the indoor side to the outdoor side is provided, and a guide pipe of a register is fitted into an opening of the ventilation pipe on the indoor side, while the ventilation pipe is fitted. In a pipe connection structure of a ventilation device in which a guide pipe of an outdoor hood is fitted and connected to an outdoor side opening of a lamp, the outdoor hood includes a back plate closely attached to an outer wall surface of the building,
A guide tube protruding inward from the back plate by a predetermined amount is provided, the inner diameter of the guide tube is set larger by a predetermined millimeter than the outer diameter of the ventilation pipe, and the guide tube of the outdoor hood is ventilated. A pipe connection structure for a ventilator, wherein a fitting connection can be made while wrapping an outer periphery of an opening of a pipe.