JP3239302U - Ventilator in a wooden house - Google Patents

Abstract

Kind Code: A1 A ventilation system is provided for preventing, as much as possible, a decrease in indoor temperature due to outside air temperature in a wooden house in cold districts. A ventilation system for a wooden house in which an outside air intake part (41) of an air supply system (40) is provided in a clearance part (33) between a pillar material (21) of an outer wall of a building frame and an external wall decorative material (30). The entry part 41 is arranged at a position from the east to the southwest where the exterior wall decorative material 30 receives sunlight. By arranging the outside air intake part of the air supply device placed on the back of the exterior wall decoration material in the east to southwest position where the exterior wall decoration material receives sunlight, the air in the clearance part (ventilation layer) of the exterior wall warmed by the sunlight is taken into the room. can be introduced into The outer wall clearance part (ventilation layer) of a wooden house has a slight gap at the lower end of the outer wall decorative material, and although air can flow, it is a generally closed space. The temperature is generally positive, and it is possible to suppress the decrease in the room temperature due to the outside air introduced into the room through the air supply device. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a ventilation device for a wooden house, and more particularly to a mounting structure for an air supply device that introduces outside air.

There are natural ventilation and forced ventilation in detached wooden houses, but in modern wooden houses with high airtightness, exhaust systems with fan devices are installed at appropriate places in the house, and no fan devices are installed. An appropriate number of air supply devices (for example, external air introduction pipes, etc.) are provided, and 24-hour ventilation is performed by gentle air supply/exhaust.

FIG. 5 shows an example of a ventilation system in a wooden house. Exhaust devices 2 for forced ventilation are arranged at appropriate locations in a house 1, and air supply devices 4 for introducing outside air are arranged at a plurality of locations. do.

Reference numeral 6 denotes a duct (exhaust pipe) for sending indoor air taken in from the air supply device 4 to the exhaust device 2 . The duct 6 is arranged above the ceiling/under the floor/attic. If it can be shared, for example, indoor air entering from a plurality of air intakes 5 is sent to the exhaust device 2 through one shared duct 6-1. It may be sent to the exhaust device 2 via an independent duct 6-2.

Conventionally, as shown in FIG. 6, the air supply device 4 is provided so as to protrude (expose) to the outside from the external wall decorative material (exterior material) 7 (for example, Patent Document 1 and Patent Document 2 below). 4-1 is an outside air intake portion on the outdoor side, 4-2 is a pipe material, and 4-3 is an outside air supply portion on the indoor side.

8 is the foundation, 9 is the foundation, 11 is the pillar material (pillar material of the frame), 12 is the floor (floor structure), 13 is the interior material (inner wall structure), 14 is the girth, and 16 is the interior material 13. It is a receiving material.

However, with such a structure, there is a problem in terms of the quality of the external appearance of the house, and there is the problem of staining the outer wall due to condensation.

Therefore, the applicant of the present invention has proposed a ventilation device in which the air supply device 4 is disposed inside the external wall decorative material (exterior material) 7 (Patent Document 3).

JP 2000-336787 Japanese Patent Laid-Open No. 10-61044 Utility Model Registration No. 3211082

The problem lies in the decrease in heating efficiency in winter in wooden houses in cold regions.

Since the conventional ventilator simply introduces outside air into the room, the room temperature may drop sharply when the outside temperature drops sharply.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to prevent, as much as possible, the decrease in indoor temperature caused by the outside air temperature.

In order to achieve the above object, the wooden house ventilation system according to the present invention is a wooden house ventilation system in which an outside air intake part of an air supply system is provided in the clearance between the outer wall pillar material and the outer wall decorative material of the frame. The outside air intake portion of the air supply device is arranged at a position from the east to the southwest where the exterior wall decorative material receives sunlight (claim 1).

When the outside air intake part of the air supply device arranged on the back surface of the external wall decorative material is arranged in the east to southwest position where the external wall decorative material receives sunlight, the air in the clearance part (ventilation layer) of the external wall warmed by the sunlight is taken out. It can be introduced indoors.

The outer wall clearance part (ventilation layer) of a wooden house has a slight gap at the lower end of the outer wall decorative material, and the upper end communicates with the attic, etc., and is a generally closed space in which air can flow. When this space is warmed by sunlight, the temperature of the air inside the outer wall clearance becomes generally positive even in the cold season, and it is possible to suppress the decrease in the room temperature due to the outside air introduced into the room through the air supply device.

The color of the outer surface of the exterior wall decorative material is black or purple, and the outside air intake part of the air supply device is formed into a box-shaped body having a surface substantially parallel to the external wall decorative material, and the box-shaped body At least one of the side surface, top surface, and bottom surface may be provided with an air intake opening (Claim 2).

When the color of the outer surface of the external wall decorative material is black or purple, the external wall decorative material absorbs the radiant heat of sunlight with little reflection, and efficiently raises the ambient temperature of the external wall clearance portion (ventilation layer).

Since the outer wall clearance is not a large space, it must be compact enough to be stored. If it is formed into a box-like body having a surface substantially parallel to the outer wall decorative material, it can be placed in a narrow space.

The outside air intake part of the air supply device may be arranged in a position facing southeast to southwest where the external wall decorative material receives the afternoon sun (Claim 3).

In order to prevent the indoor temperature from dropping, it is most preferable when the outdoor temperature is high and the external wall decorative material is exposed to sunlight. This condition can be satisfied by arranging the outside air intake part of the air supply device in a position facing southeast to southwest where the external wall decorative material receives the afternoon sun.

ADVANTAGE OF THE INVENTION According to the structure of this invention, the fall of the indoor temperature in the winter season resulting from an air supply apparatus in a wooden house can be prevented as much as possible.

It is a figure which illustrates the attachment state of the air supply apparatus which concerns on embodiment. It is a figure which shows the attachment state of the air supply apparatus which concerns on FIG. 1 from a plane. It is a figure which illustrates the external appearance structure of the air supply apparatus which concerns on FIG. FIG. 2 is a diagram illustrating an arrangement position of the air supply device according to FIG. 1; It is a figure which illustrates the conventional general ventilation system in a wooden house. It is a figure which illustrates the attachment state of the conventional air supply apparatus.

FIG. 1 is a diagram illustrating an installation state of an air supply device 40 among ventilation devices for a wooden house 10 according to the present invention.

20 is an exterior wall main body, and 30 is an exterior wall decorative material.

As shown in FIG. 2, the outer wall decorative material 30 has furrings 24 arranged on the outdoor side of the pillars (including studs) 21 constituting the outer wall main body 20, and the furrings 24 (vertical furrings/horizontal furrings). ) on the outdoor side.

Since the furring strip 24 is provided, a clearance portion (gap due to the intervention of the furring strip) 33 is generated between the pillar material (including studs) 21 and the external wall decorative material 30 .

Reference numeral 34 denotes an opening for introducing outside air provided at the lower end of the external wall decorative material 30 . The opening 34 is preferably narrowed and provided with a filter (not shown) to prevent dust from entering.

Since the clearance part 33 is a space (gap) through which the outside air introduced from the opening part 34 flows, when the furring strip 24 is a horizontal furring strip, a vertical slit or the like is provided to enable the air to flow in the vertical direction. Provide a gap for

When the furring strip 24 is a vertical furring strip, it is desirable to provide a gap such as a horizontal slit at an appropriate location so as not to hinder the horizontal flow of air so that the air can flow in the horizontal direction.

In FIG. 1, 8 is the foundation, 9 is the foundation, 12 is the floor (floor structure), 13 is the interior material (eg, gypsum board/interior decorative material), 14 is the girder, and 16 is the receiving material for the interior material 13. is.

In FIG. 2, 25 is a moisture absorbing sheet having air permeability, 26 is a structural plywood, and 27 is a heat insulating material such as glass wool.

The outside air intake part 41 of the air supply device 40 is positioned in the clearance part 33 between the pillar material (including studs) 21 and the external wall decorative material 30 .

In FIGS. 1 and 2, 45 is an outside air supply portion provided inside the room, and 46 is a pipe member that connects the outside air intake portion 41 and the outside air supply portion 45 together.

Since the height of the outside air intake portion 41 and the height of the outside air supply portion 45 may not be the same, the pipe material 46 does not necessarily have to have a linear structure.

For example, as shown in FIG. 3, the outside air intake portion 41 is preferably formed into a thin box-like body having a vertical surface 41-1 substantially parallel to the outer wall decorative member 30. As shown in FIG. Then, for example, an air intake opening 41-4 is provided on the side surface 41-2 and/or the top surface 41-3 of the box-shaped body, and a filter for preventing dust, insects, and the like from entering is provided in this portion. The shape of the vertical surface 41-1 may be rectangular, circular, or polygonal other than rectangular. An air intake opening may be provided on the bottom surface of the box-shaped body.

The outside air intake portion 41 of the air supply device 40 is desirably arranged at an upper position away from the opening portion 34 of the clearance portion 33 .

This is to minimize the influence of the cold air that flows in from the opening 34 provided at the lower end of the clearance 33 during the coldest winter season.

The outside air intake part 41 of the air supply device 40 is arranged to be positioned on the back surface of the exterior wall decorative material 30 exposed to sunlight (sunlight).

This will be explained using FIG.

FIG. 4 exemplifies the relationship between the orientation of the wooden house 10, the direction of sunlight, and the outside air intake section 41 of the air supply device 40. As shown in FIG.

The direction of the outer wall of the wooden house 10 varies depending on the site and the road, but FIG. 4 illustrates the wooden house 10 in which the outer wall decorative materials 30 face north, south, east and west.

During the seasons of autumn, winter, and spring in cold regions, the direction of sunrise (arrow A) is more south than east, and the direction of sunset (arrow B) is more south than west, and the hours of sunshine are short.

Outside air temperature is very low at sunrise and high before sunset.

Since sunlight (sunlight) is a so-called infinite light source, the amount of heat received by the exterior wall decorative material 30 exposed to the sunlight is the same regardless of the right or left side of the exterior wall.

In view of this phenomenon, the most preferable location for installing the outside air intake portion 41 of the air supply device 40 is the rear surface of the exterior wall decorative material 30 near the southwest corner (this portion is indicated by the hatched line Q).

At this time, if the color of the outer surface of the external wall decorative material is black or purple, the external wall decorative material absorbs the radiant heat of the sun without reflecting it, and the ambient temperature of the external wall clearance (ventilation layer) is efficiently reduced. can be increased. It is desirable to use dark colors for black or purple colors.

Other colors that easily absorb the radiant heat of the sun include red, orange, and green, but their absorption capacity is inferior to dark black or purple colors.

It is not uncommon for the installation position of the outside air intake part 41 of the air supply device 40 to be unable to be installed according to the conditions due to the layout of the living room or the structure of the house. However, preferably, if the outside air intake section 41 of the air supply device 40 is provided in the vicinity of the southwest corner, the temperature of the introduced air can be raised to a high temperature during the harshest winter, and a decrease in the indoor temperature can be prevented.

FIG. 4 shows the clearance 33 between the exterior wall decorative material 30 and the exterior wall main body 20 as if all four sides are in communication. However, in the ventilator according to the present invention, in order to keep the intake air temperature of the outside air intake part 41 of the air supply device 40 high, left and right of the clearance part 33 are provided at the left and right parts of the place where the outside air intake part 41 is installed. It is desirable to provide shielding longitudinals to prevent directional airflow.

The shielding longitudinal members may be longitudinal furring strips, but may also be provided as separate members. Since it is a means for preventing air flow in the horizontal direction, for example, a simple shielding structure using a resin panel material or the like may be used.

According to this configuration, even in winter in cold regions, the warm air in the internal space (clearance portion 33) of the exterior wall decorative material 30 that receives sunlight can be supplied to the living room through the outside air intake portion 41. It is possible to prevent the indoor temperature from dropping even during the period, and to maintain good heating efficiency.

The ventilation device according to the present invention is not limited to the above configuration.

Although the present invention prevents the temperature of the room from decreasing in winter, the supply of outside air in summer can be performed by switching, for example, an air supply device arranged on the north side, which is not exposed to sunlight. This is because the air supply device can be freely designed to supply air to the living room via the duct.

Although it has been explained that the outside air intake section 41 is provided with a filter for preventing dust, insects, etc. from entering, the filter may be provided in the outside air supply section 45 on the indoor side. This makes maintenance (exchange, etc.) of the filter easier.

The structure of the outer wall of the wooden house 10 may be a traditional framework construction method, or a frame wall structure (including a 2×4 construction method) using structural plywood.

8 Foundation 9 Foundation 10 Wooden house 12 Floor 13 Interior material 14 Girdle 16 Receiving material 20 Exterior wall main body 21 Column material 24 Furring rim 25 Moisture absorbing sheet 26 Structural plywood 27 Heat insulating material 30 Exterior wall decorative material 33 Clearance part 34 (Exterior wall decorative material ) Opening 40 Air supply device 41 Outside air intake 41-1 (Outside air intake) Vertical surface 41-2 (Outside air intake) Side 41-3 (Outside air intake) Upper surface 41-4 (Outside air intake) ) Air intake opening 45 Outside air supply part 46 Pipe material arrow A Arrow in the direction of sunrise B Oblique line in the direction of sunset Q Back side of external wall decorative material near southwest corner

Claims (3)

A ventilation system for a wooden house in which an outside air intake part of an air supply system is provided in a clearance between an outer wall pillar material and an outer wall decorative material of a frame,
The outside air intake portion of the air supply device includes:
A ventilation system for a wooden house, characterized in that the external wall decorative material is arranged in a position from the east to the southwest where it receives sunlight. The color of the outer surface of the exterior wall decorative material,
In addition to black or purple,
The outside air intake part of the air supply device is
Molding into a box-shaped body having a surface substantially parallel to the outer wall decorative material,
2. A ventilation system for a wooden house according to claim 1, wherein an air intake opening is provided on at least one of the side surface, top surface and bottom surface of said box-like body. The outside air intake part of the air supply device is
3. A ventilation system for a wooden house according to claim 1 or claim 2, wherein the external wall decorative material is arranged in a position facing southeast to southwest where it receives afternoon sunlight.

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