JPH0669637U - Exhaust hood - Google Patents

Abstract

(57) [Abstract] [Purpose] The exhaust hood can be arranged as close as possible to the heat generating portion a, so that the exhaust function can be advantageously operated without hindering the operation of the heat generating portion. A side plate that is hung downward in a conventional exhaust hood is discharged, the upper surface of the heat-generating portion a is covered with a flat plate-shaped cover plate 1 having an exhaust port 2 in the center, and the exhaust port 2 is covered. A plurality of hollow tubular pipes 3 are provided so as to surround and surround the exhaust port 2 by projecting air from a plurality of hollow tubular pipes 3 projecting downward at appropriate intervals. By providing the exhaust gas, the exhaust gas from the heating section a is converged without being diffused to the periphery and exhausted from the exhaust port 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an exhaust hood that covers the upper surface of a heat generating portion.

[0002]

[Prior art]

 In order to eliminate the hot air generated in the heat generation part, conventionally, for example, as shown in FIG. 4, the heat generation part a of the kitchen is covered, and the side plate c is inserted from the ceiling plate b to the bottom plate so that the exhaust gas generated in the heat generation part is not diffused to the surroundings. In general, it is configured to hang downward, and the exhaust gas is collected by the side plate c and guided to the exhaust port d provided in the ceiling plate b.

[0003]

[Problems to be solved by the device]

 In the case where the side plate d is hung vertically as in the above-mentioned conventional case, the closer the exhaust hood is to the heating part a, the better the exhausting efficiency is, and the farther the heating hood a is, the more the amount of suction of peripheral air other than the heating part a becomes. As a result, the suction rate of the exhaust gas generated in the heating section a decreases.

Therefore, when the exhaust hood is brought close to the heating section a, there is a disadvantage that the side plate c hangs down so that the work at the heating section a is hindered.

[0005]

[Means for Solving the Problems]

 In view of the above, the present invention uses an air curtain instead of the side plate c in the above-mentioned conventional means to prevent the exhaust gas generated in the heating part a from scattering to the surroundings, and also to focus the exhaust gas to exhaust it. An air outlet nozzle is provided in the center of the cover plate located on the upper surface of the heat generation part, which communicates with the exhaust duct, and surrounds the exhaust port at an appropriate arrangement interval in the length direction of the side surface. It is characterized in that a plurality of hollow columnar tubular pipes having an appropriate length, which are opened, project downward from the cover plate, and the base end side of each tubular pipe is communicated with the air supply source.

[0006]

The exhaust hood according to the present invention is, as shown in the drawings of the embodiment, a longitudinal column provided in a hollow columnar cylindrical tube 3 projecting downward from a cover plate 1 located on the upper surface of the heat generating portion a. By forming an air curtain by the air blown from the air nozzle 4, the exhaust gas from the heat generation part a is prevented from being diffused in all directions and is guided to the exhaust port 2 in a spiral shape. Further, even when the exhaust hood is arranged close to the heat generating portion a to improve the suction rate from the heat generating portion a, the work for the heat generating portion a can be performed without any trouble by utilizing the interval between the hollow columnar cylindrical tubes 3. I made it possible.

[0007]

【Example】

 An embodiment of the device of the present invention will now be described with reference to FIGS.

The cover plate 1 located on the upper surface of the heat generation part a is formed in a substantially flat plate shape, and an exhaust port 2 communicating with an exhaust duct (not shown) is provided at the center thereof.

In the illustrated embodiment, the cover plate 1 has a rectangular plate-like shape, and hollow cylindrical pipes 3 having appropriate lengths are projected downward from four corners of the cover plate 1. The exhaust ports 2 are arranged in a surrounding relationship, but the number is not limited to four, and the number can be increased or decreased by an appropriate arrangement. The intervals between the tubular pipes 3 are intervals that allow the work on the heating part a to be performed smoothly. And

The lower end of each tubular pipe 3 is closed, a slit-shaped air blowing nozzle 4 is provided in the length direction of the outer surface thereof, and the proximal end side of each tubular pipe 3 is connected to an appropriate air supply source to blow each Air was blown from the nozzle 4 to form an air curtain. The blowing nozzle 4 is not limited to the slit shape shown in the drawing, and blowing holes may be continuously provided in the length direction.

Further, in the illustrated example, the direction in which the air is blown out from each of the blowout nozzles 4 is set to a cut line direction, whereby a case where the continuous discharge of the exhaust of the heating section a is made good as an air curtain that swirls the blown air in series. As shown, each of the tubular pipes 3 may be rotatably installed so that the air blowing direction is set according to the situation at the site.

[0012]

[Effect of device]

 According to the present invention, a plurality of hollow columnar tube pipes are provided except for the side plate of the exhaust hood in the conventional means, and air is blown out by opening an air blowing nozzle in the lengthwise direction to surround the heat generating portion. By surrounding the air curtain with an air curtain, it is possible to prevent the exhaust from spreading from the heating part in all directions in the same way as before, and to guide it to the exhaust port accurately, and to keep the exhaust hood close to the heat generating part. Even if it is provided, there is an effect that it is possible to facilitate the work smoothly by utilizing the space without hindering the work on the heating part by utilizing the space between the hollow columnar tubes.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an exhaust hood according to the present invention.

2 is a bottom view of FIG.

[Fig. 3] Partial enlarged side view

FIG. 4 is a cutaway side view of an exhaust hood showing a conventional example.

[Explanation of symbols]

 a Heat generation part 1 Flat cover plate 2 Exhaust port 3 Hollow columnar tube 4 Air blowing nozzle

Claims (1)

[Scope of utility model registration request] 1. An exhaust port 2 communicating with an exhaust duct is provided in a central portion of a cover plate 1 located on an upper surface of a heat generating portion a, and the exhaust port 2 is surrounded by an appropriate arrangement interval in a side surface length direction. A plurality of hollow columnar tubular pipes 3 having an appropriate length and having air outlet nozzles 4 projecting downward from the cover plate 1 so that the proximal end side of each tubular pipe 3 communicates with an air supply source. Exhaust hood.