JP2002130759A - Range hood fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge waste gas outside a room without fail, while enabling utilization of the space above a range hood fan, by lessening the vertical height of the range hood fan. SOLUTION: A centrifugal fan is put, as a main blower for exhaust, directly above a hood so that the rotation axis is vertical, so that the vertical height is made small, and an air curtain by reflux fan is made at the front of the hood or at other side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood fan provided above a range in order to efficiently discharge waste gas and the like generated by heating cooking to the outside of a room.

[0002]

2. Description of the Related Art A range hood fan which merely sucks waste gas and discharges it to the outside of a room requires a wide and deep hood to ensure discharge. Nevertheless, it was inevitable that waste gas would enter the room. In addition, the range hood is entirely occupied by the range hood, and there is a problem in terms of effective use of the indoor space.

[0003] In order to avoid the drawbacks mentioned above, it has heretofore been proposed to create an air curtain around the range. However, in the examples so far, a long distance is required between the blower and the outlet in order to create an airflow having a thin and wide cross section suitable for an air curtain, and only a thick range hood is eventually obtained. could not. Therefore, it was still unsatisfactory in terms of effective use of the indoor space.

[0004]

The problem to be solved is that the vertical height of the range hood fan can be reduced so that a space for installing a cabinet or the like can be secured above the range hood fan, and waste gas or the like can be kept indoors. This is to ensure that the water is discharged outside the room without intrusion.

[0005]

According to the present invention, a centrifugal fan as a main exhaust blower is mounted on a hood by using a centrifugal fan so that its rotation axis is vertical. The height of the top and bottom is made thin, and an air curtain is formed on the front of the hood by a once-through fan, so that waste gas, etc. does not come out of the range as much as possible outside the air curtain, and comes out near the ceiling. Waste gas and the like staying in the air are suctioned as air curtain air, blown to a range, and discharged outside the room by a centrifugal fan for exhaust. The use of the cross-flow fan only on the front side is the invention of claim 1, and in addition, the cross-flow fan is disposed at the left, right, or the back or a combination thereof as necessary,
The second aspect of the present invention provides an air curtain.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described with reference to examples.

[0007]

Embodiment 1 FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view thereof. The hood main body 1 is fixed to a wall surface (not shown) of the building by a fixing bracket 2. Waste gas and the like generated around the range pass through the filter 3, from the inside of the multi-blade impeller 6 of the centrifugal fan driven by the bell mouth 7 and the motor 8, that is, to the inside of the scroll 5.
Further, the air passes through the duct adapter 9 and the shutter 10 and is discharged outside through the duct 11. The illumination lamp 4 illuminates the periphery of the range. The curtain plate 12 is a blindfold for a space including the centrifugal fan. Once-through fan 13 driven by motor 14
By sucking air at the upper part of the front of the range and blowing it to the lower part, an air curtain is formed to prevent waste gas from flowing out of the range into the room. Collect again. By doing so, the waste gas can be reliably discharged outside the room. If the outside air is introduced into the room at a position slightly away from the periphery of the range in order to avoid negative pressure in the room air, the discharge of waste gas around the range to the outside can be more reliably performed. Become.

[0008]

Embodiment 2 FIG. 3 shows another embodiment of the present invention. In contrast to the first embodiment, a cross-flow fan 13 is disposed on the front surface of the hood, a cross-flow fan 15 is disposed on the left side, and a cross-flow fan 17 is disposed on the right side for the air curtain. Each flow-through fan is driven by a motor 14, 16, 18, respectively. The back side is typically a wall and no air curtain is required. However, if there is a special case where the range is in the center of the room, it is also possible to place a once-through fan for the air curtain at the place where the illumination lamp 4 is usually located. It is also possible to arrange the lamp 4 and the once-through fan side by side.

[0009]

As described above, according to the present invention,
A range hood fan with a thin upper and lower thickness, so that the space above the range is not occupied by the range hood fan alone, so that it can be used for other purposes and minimize leakage of waste gas etc. into the room Can be suppressed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

FIG. 2 is a perspective view of one embodiment of the present invention.

FIG. 3 is a perspective view of another embodiment of the present invention.

[Description of Signs] 1 Hood main body 2 Fixing bracket 3 Filter 4 Illumination lamp 5 Scroll 6 Multi-blade impeller 7 Bell mouth 8 Motor 9 Duct adapter 10 Shutter 11 Duct 12 Curtain plate 13 Cross-flow fan 14 Motor 15 Cross-flow fan 16 Motor 17 Cross-flow Fan 18 motor

Claims (2)

[Claims] A centrifugal fan for main exhaust is disposed immediately above a hood with its axis of rotation vertical, and a through-flow fan is installed in front of the hood in a range hood fan having a small vertical height. , Soot, waste gas, steam, etc., staying in the upper part near the indoor range (hereinafter referred to as waste gas, etc.)
A range hood fan that sucks air and blows out the lower part of the front of the range to form an air curtain to prevent waste gas and the like from entering the room and effectively discharge the gas to the outside of the room. 2. The range hood fan according to claim 1, wherein the cross-flow fan for the air curtain is installed on one or more of a side surface other than the front surface, a left side, a right side, and a back side.