JPH09145115A - Ventilation fan for spot location - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an efficient ventilation of only a part of location such as a peripheral part of a gas cooking device at a kitchen or a smoking place in the same space, or the like. SOLUTION: A part near at least a suction port 12c in a ventilation fan 12 for use in only discharging air is enclosed by a discharging port 13c of a ventilation fan 13 for only sucking air. Purple smoke present in a space shielded by fresh air or smoke or odor or the like generated during cooking operation is discharged by a ventilation fan 12 for use in discharging air, thereby a ventilation for a space requiring ventilation is efficiently carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot ventilation fan suitable for ventilating only a part of a gas stove around a kitchen or a smoking place in the same space.

[0002]

[Prior Art] Japanese-style houses in the old days had many gaps and were naturally ventilated more than necessary, but recent buildings have become airtight due to the spread of sashes, etc. Active ventilation by the combined use with is becoming indispensable. Therefore, various ventilation fans have come to be installed in the present building.

By the way, when classifying conventional ventilation fans according to their functions, there are exhaust only, those capable of adjusting air volume by exhaust, those capable of switching between exhaust and intake, those having only exhaust and only intake as a set, and the like. is there.

[0004]

When such a ventilation fan, for example, an exhaust ventilation fan 1 having only exhaust gas, is installed in the living room L or the kitchen K as shown in FIGS. 5 and 6, the ventilation efficiency is poor and Since the state is just like stirring the air, for example, when smoking in the living room L or cooking in the kitchen K, the smell in the living room L or kitchen K There was a problem of remaining.

Alternatively, as shown in FIG. 7, when a ventilation fan 1 for exhaust only and a ventilation fan 2 for intake only are installed in the living room L, the exhaust fan 1 as shown in FIG. 5 is installed. Compared with the case, the ventilation efficiency was improved to some extent, but it was still not enough.

The present invention has been made in view of the above-mentioned conventional problems, and in particular, a spot ventilation fan that can efficiently ventilate only a part of a gas stove around a kitchen or a smoking place in the same space. Is intended to provide.

[0007]

In order to achieve the above-mentioned object, the spot ventilation fan of the present invention encloses at least the vicinity of the suction port of the exhaust ventilation fan with the discharge port of the intake ventilation fan so that the required ventilation space is It is configured so that it can be blocked by the fresh outside air discharged from the discharge port.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the spot ventilation fan of the present invention, at least the vicinity of the suction port of the exhaust ventilation fan that performs only exhaust is surrounded by the discharge port of the intake ventilation fan that performs only intake, and the ventilation required space is defined by the discharge port. While shutting off the fresh air exhaled from the room, by exhausting the purple smoke existing in the space shut off by the fresh outside air, the smoke generated during cooking, the odor, etc. by the exhaust ventilation fan, the ventilation required space is created. Ventilate efficiently.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A spot ventilation fan according to the present invention will be described below with reference to an embodiment shown in FIGS. FIG. 1 is a diagram showing a schematic configuration when the spot ventilation fan of the present invention is installed on a ceiling, and FIGS. 2 (a) and 2 (b) show the state of air when the spot ventilation fan of the present invention is used for ventilation. FIG. 3 is a plan view showing the spot ventilation fan of the present invention installed in a living room,
FIG. 4 is a diagram when the spot ventilation fan of the present invention is installed in a kitchen.

1 to 4, reference numeral 11 denotes, for example, a ceiling 3.
The exhaust ventilation fan for spots of the present invention installed in 1. has an exhaust ventilation fan 12 that performs only exhaust and an intake ventilation fan 13 that performs only intake in a related configuration. That is, for example, the suction port 12c of the exhaust ventilation fan 12 in which the exhaust fan 12b is installed in the middle of the exhaust duct 12a, the intake duct 13
Intake ventilation fan 1 with an intake fan 13b installed in the middle of a
It is surrounded by three discharge ports 13c.

The shape of the discharge port 13c is shown in FIG.
As shown in (a), when the discharged outside air has a circular ring shape, it has a circular shape, and when it has a quadrangular ring shape as shown in FIG. 2 (b), it has a quadrangular shape. Often,
There is no particular limitation. That is, the shape of the discharge port 13c is
It may be appropriately selected according to the shape of the space that needs ventilation that is shut off by the outside air. In FIG. 2, A indicates a suction part by the exhaust ventilation fan 12, and B indicates a discharge part by the intake ventilation fan 13.

Further, the size of the discharge port 13c is the size (area) of the space which needs ventilation to be shut off by the outside air.
Alternatively, it is properly selected according to the discharge angle with respect to the vertical line.
Further, the air volume of the intake ventilation fan 13 is most preferably the air volume that can completely seal the space to be ventilated with the outside air discharged from the discharge port 13c, but it is not necessarily the air volume that can completely seal the space. If at least about 1/3 of the height of the space to be ventilated can be cut off, the ventilation efficiency will be significantly improved compared to the case where a conventional ventilation fan is used. This is because purple smoke, smoke generated during cooking, odor, etc. are lighter than air and rise.

The spot ventilation fan of the present invention has the above-mentioned structure, and is installed, for example, in a smoking place in the living room L as shown in FIG. 3 or above the gas stove in the kitchen K as shown in FIG. The outside air drawn from the intake duct 12a and discharged from the outlet 13c of the intake ventilation fan 13 surrounds the smoking place and the gas stove to prevent purple smoke, smoke generated during cooking, and odors from escaping to other places. In such a state, it is sucked from the suction port 12c of the exhaust ventilation fan 12 and exhausted to the outside air through the exhaust duct 12a.

Although the present embodiment has been described with respect to the case where it is installed in the living room or the kitchen, the spot ventilation fan according to the present invention is not limited to the above-mentioned place, and it can be effectively installed in an office room or a toilet. Needless to say.

[0015]

As described above, when the spot ventilation fan of the present invention is used, the fresh air discharged from the discharge port of the intake ventilation fan shuts off the space required for ventilation while the fresh air is used. Purple smoke existing in the closed space, smoke generated during cooking, odor, etc. can be exhausted by the exhaust ventilation fan, so that the space required for ventilation can be efficiently ventilated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration when a spot ventilation fan of the present invention is installed on a ceiling.

2 (a) and 2 (b) are plan views showing a state of air when performing ventilation using the spot ventilation fan of the present invention.

FIG. 3 is a diagram when the spot ventilation fan of the present invention is installed in a living room.

FIG. 4 is a diagram when the spot ventilation fan of the present invention is installed in a kitchen.

FIG. 5 is a diagram of a case where a ventilation fan having only exhaust gas is installed in a living room.

FIG. 6 is a view showing a case where an exhaust fan having only exhaust air is installed in a kitchen.

FIG. 7 is a diagram showing a case where a ventilation fan with only exhaust air and a ventilation fan with only intake air are installed in a living room.

[Explanation of symbols]

 11 Ventilation fan for spot 12 Ventilation fan for exhaust 12c Suction port 13 Ventilation fan for intake 13c Discharge port

Claims (1)

[Claims] 1. A spot characterized in that at least the vicinity of a suction port of an exhaust ventilation fan is surrounded by a discharge port of an intake ventilation fan so that a space required for ventilation can be blocked by fresh outside air discharged from the discharge port. Ventilation fan.