JP2000356383A - Ventilation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a simple and economical ventilation structure which can be installed easily to ventilate the ceiling space, or the like, and can prevent formation of dew surely. SOLUTION: A bent cap 20 is fixed to an opening 12a made in the wall surface 12 of a ceiling space 11 and connected with an exhauster 30. The exhauster 30 comprises a fan 31 where impellers 31c in a casing 31a are rotated by a motor 31b disposed in the center of the casing 31a, a suction pipe 32 and an exhaust pipe 33 fixed, respectively, to the suction side and the exhaust side of the fan 31 concentrically to the casing 31a. The fan 31 of the exhauster 30 is interfinked with the switch 14 of a lighting fixture provided in the living room 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure capable of reliably preventing the occurrence of dew condensation in an indoor space above a ceiling or under a floor in a house such as a house or an apartment.

[0002]

2. Description of the Related Art In a space above a ceiling in a house such as a house or an apartment, dew condensation occurs when the air inside is heated during the day and cooled at night. Condensation that occurs in the space above the ceiling may contaminate the ceiling or flow along the wall surface and contaminate the wallpaper or the like. Dew condensation also occurs in the underfloor space of a house. For this reason, a ventilation structure is provided in the space above the ceiling, under the floor, or the like to prevent the occurrence of dew condensation.

For example, Japanese Utility Model Laid-Open Publication No. Sho 63-22535 discloses that a ventilation device is provided on a wall constituting a space above a ceiling,
A configuration is disclosed in which the ventilation device is controlled based on the temperature and humidity in the space above the ceiling.

[0004]

However, in such a configuration in which the ventilator is controlled based on the temperature and humidity in the space above the ceiling, a sensor for detecting the temperature and humidity in the space above the ceiling is required. In addition, there is a problem that economical efficiency is impaired because complicated control is required. In addition, in order to mount the ventilation device directly on the wall, it is necessary to construct an opening in the wall or to seal the space between the ventilation device and the wall. May be damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a simple configuration, economical, and easily installed inside a house without special construction. It is another object of the present invention to provide a ventilation structure capable of reliably preventing dew condensation.

[0006]

According to the ventilation structure of the present invention, an impeller arranged in a casing is arranged in an axial direction of the casing by a motor provided at an axis of the casing having a cylindrical space therein. A ventilation device having a fan rotated to generate an airflow along the air passage, and an intake pipe and an exhaust pipe mounted concentrically with the casing on the intake side and the exhaust side of the fan, respectively, penetrates the wall surface. The ventilation structure of the present invention is provided at the shaft center of a cylindrical casing by attaching an exhaust pipe to the opening provided at the indoor side space. A fan, which is rotated by the driven motor to generate an airflow along the axial direction of the casing, and a fan, And a ventilating device having a cylindrical ventilation pipe that concentrically holds the ventilation pipe, by attaching the exhaust-side end of the ventilation pipe to an opening provided so as to penetrate the wall surface. It is characterized by being installed in.

[0007] A vent cap is provided in the opening of the wall surface. The fan of the ventilation device is driven in conjunction with a switch of a lighting fixture in the house.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of an embodiment of the ventilation structure of the present invention. This ventilation structure
A ventilating device 30 is attached to a vent cap 20 attached to an opening 12 a of a wall surface 12 forming the ceiling space 11, which is provided to prevent the occurrence of dew condensation in an indoor ceiling space 11 in a house. It is configured.

FIG. 2 is an exploded perspective view of the ventilation structure. The ventilation device 30 includes a fan 31 and intake pipes 3 attached to the intake side and the exhaust side of the fan 31, respectively.
2 and an exhaust pipe 33. Fan 31
Is a casing 31a having a short flat rectangular parallelepiped shape having an axial length of about 3 cm and having a cylindrical space provided therein.
And a motor 31b disposed at an axis of the casing 31a, and an impeller 31c connected to the motor 31b in the casing 31a. The impeller 31c is provided with five blades arranged along the radial direction of the casing 31a. The motor 31a of the fan 31 rotates the impeller 31c at a rotation speed of about 2700 rpm by applying a voltage of, for example, 100 V, and the casing 31a is rotated by the rotation of the impeller 31c. An airflow is generated along the axial direction.

The intake pipe 32 provided on the intake side of the fan 31 is provided with a flange 32a at one end, and this flange 32a is abutted concentrically with the end face of the casing 31a on the intake side. ing. The exhaust pipe 33 provided on the exhaust side of the fan 31 is also provided with a flange 33a at one end, and this flange 33a is concentrically butted against the exhaust-side end face of the casing 31a. I have. And the intake pipe 32
The flange portion 32a of the exhaust pipe 33 and the flange portion 33a of the
It is integrally attached to the casing 31a by bolts and nuts.

The vent cap 20 has a cylindrical portion 21 fitted in the opening 12a of the wall surface 12, and a hemispherical hood 22 integrally attached to an outdoor end of the cylindrical portion 21. ing. And the burrs 23 are provided in the end face of the cylindrical portion 21 on the outdoor side.

The vent cap 20 is not limited to such a shape, and any commercially available vent cap having various structures can be used.

The exhaust pipe 33 of the ventilator 30 is fitted to the inner peripheral end of the cylindrical portion 21 of the vent cap 20 which is fitted into the opening 12a of the wall surface 12 forming the space 11 above the room. ing. The exhaust pipe 33 is
In order to be fitted to the cylindrical portion 21 of the vent cap 20,
It has a predetermined caliber.

The fan 31 provided in the ventilation device 30
The lighting device of the living room 13 is driven and stopped in conjunction with the switch 14 of the lighting device provided in the living room 13 of the house. When the switch device 14 is operated to turn on the lighting device of the living room 12, the fan 31 is turned on. Is driven, and the lighting equipment in the living room 12 is turned off, so that the fan 31 is stopped.

In the ventilation structure having such a configuration, when the switch 14 is operated to turn on the lighting equipment of the living room 13 in the house, the fan 31 of the ventilation device 30 is driven. As a result, the air in the indoor back-of-the-ceiling space 11 passes through the intake pipe 32, is sucked by the fan 31, and is discharged from the exhaust pipe 33 to the outside through the vent cap 20.

It has been confirmed by experiments that the ventilation device 30 ventilates the air in the entire space of 8600 mm × 4500 mm × 400 mm in about 11 minutes by driving the fan 31.
In a normal ceiling space 11 provided with wiring and the like, the whole can be ventilated in about several hours. For this reason, the lighting equipment of the living room 13 that is reliably turned on for at least about 4 to 5 hours a day and the fan 31 are driven in conjunction with each other, so that the space 11
Degrees of ventilation are ensured throughout.

In the ventilation structure of the present invention, it is usually sufficient to attach the ventilator 30 to the vent cap 20 provided on the wall 12 constituting the space 11 above the ceiling in the house. It can be provided very simply, without having to do it. And the ventilation system 3
Numeral 0 is a simple configuration in which the intake pipe 32 and the exhaust pipe 33 are attached to the small fan 31 and is economical.

The diameter of the exhaust pipe 33 provided in the ventilator 30 is appropriately changed so as to fit into the cylindrical portion 21 of the vent cap 20 attached to the wall surface 12. Further, the exhaust pipe 33 and the intake pipe 32
Are not limited to cylindrical shapes, and may be rectangular tube shapes.

FIG. 3 is an exploded perspective view showing another example of the embodiment of the ventilation structure of the present invention. In this ventilation structure, the vent cap 20 provided in the opening 12a of the wall 12
, A fan 41 is mounted concentrically inside a cylindrical ventilation pipe 42. FIG. 4 is a vertical cross-sectional view of the ventilation device 40. The fan 41 has a short flat cylindrical casing 41a having a length of about 3 cm in the axial direction, a motor 41b arranged at an axis portion, and an impeller 41c connected to the motor 41b. . In the impeller 41c,
Five blades are provided along the radial direction of the casing 41a. Motor 41a of fan 41
Is configured to rotate the impeller 41c at a rotation speed of about 2700 rpm by applying a voltage of, for example, 100V.

The ventilation pipe 42 for holding the fan 41 inside is made of vinyl chloride or the like, and the casing 41a of the fan 41 is held concentrically at the center in the axial direction. Casing 41 of fan 40
Is inserted into the inside of the ventilation pipe 42 by four embedding bolts 43 provided so as to penetrate along the radial direction at circumferentially equal positions on the peripheral surface of the ventilation pipe 42. It is held concentrically. Then, the inner peripheral surface of the ventilation pipe 42 and the fan 41
Between the outer surface of the casing 41a and the caulking material 44.
Has been caulked.

In the ventilation device 40 having such a configuration, the impeller 41c of the fan 40 is rotated to generate an airflow along the axial direction in the casing 41a. The end on the exhaust side is the wall 1
Vent cap 20 attached to the second opening 12a
By being fitted to the cylindrical part 21 of the above, it is installed in the indoor space above the ceiling. And the above-mentioned ventilation device 3
0, the fan 41 of the ventilation device 40
It is designed to be driven in conjunction with the lighting equipment of No. 3,
Therefore, while the lighting equipment in the living room 13 is on,
The indoor ceiling space 11 is ventilated.

The ventilation structure of the present invention is not limited to the configuration for ventilating the space 11 above the ceiling as described above, and can be applied to the case where the space below the floor is ventilated.

[0023]

As described above, in the ventilation structure according to the present invention, the ventilation device can be easily installed in the opening provided in the wall surface constituting the space above the ceiling, the space below the floor, and the like. In addition, no special construction for installing a ventilation device is required, and the space above the ceiling, under the floor, and the like can be reliably ventilated.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of an embodiment of a ventilation structure of the present invention.

FIG. 2 is an exploded perspective view showing the ventilation structure.

FIG. 3 is an exploded perspective view showing another example of the embodiment of the ventilation structure of the present invention.

FIG. 4 is a longitudinal sectional view of a ventilation device used for the ventilation structure.

DESCRIPTION OF SYMBOLS 11 Above-the-ceiling space 12 Wall surface 12a Opening 13 Living 14 Switch 20 Vent cap 21 Cylindrical part 22 Hood 23 Gutter 30 Ventilation device 31 Fan 31a Casing 31b Motor 31c Impeller 32 Intake pipe 33 Exhaust pipe 40 Ventilation device 41 Fan 41a Casing 41b Motor 41c Impeller 42 Ventilation pipe

Claims (4)

[Claims] An impeller arranged in a casing is rotated by a motor provided in an axial portion of a casing having a cylindrical space therein so as to generate an air flow along an axial direction of the casing. A ventilator having a fan and an intake pipe and an exhaust pipe mounted concentrically with the casing on the intake side and the exhaust side of the fan, respectively. The ventilation structure characterized by being installed in the indoor side space by attaching. 2. A fan, wherein an impeller arranged in the casing is rotated by a motor provided at an axis of the cylindrical casing so as to generate an airflow along an axial direction of the casing. A ventilation device having a cylindrical ventilation pipe that holds the fan concentrically, by attaching the exhaust side end of the ventilation pipe to an opening provided to penetrate the wall surface, Ventilation structure characterized by being installed in space. 3. The ventilation structure according to claim 1, wherein a vent cap is provided at an opening of the wall surface. 4. The ventilation structure according to claim 1, wherein the fan of the ventilation device is driven in conjunction with a switch of a lighting fixture in a house.