JPH10160174A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate the discharge of exhaust gas without causing a vortex, and prevent the diffusion of exhaust gas into a chamber, by installing a blowing fan which sends the air inside a room into the interior of an air chamber, an exhaust fan in the interior. SOLUTION: For a ventilator, the air pressure within an air chamber 13 rises by the operation of a blow fan 14, and the compressed inside air is jetted upward through a jet nozzle 18 via an outflow port 13a. The jetted air flows in an exhaust duct 15, and is exhausted to outside by an exhaust fan 16. Therefore, combustion heat, harmful gas, etc., lying inside an air film flow in the exhaust duct 15 by the jet of the fir film, and is discharged outside. At this time, combustion heat, combustion gas, etc., flow in the exhaust duct 15, with their jet force accelerated further by the jet force of the air film jetted from lower side to upper side, while going up gradually by the exhaust fan 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilating apparatus, and more particularly, to a combustion gas, an odor, and a combustion generated in a work space by forming a film of air around the work space by inhaling and spraying indoor air. The present invention relates to a ventilation device using an air film that prevents heat from being diffused to the surroundings.

[0002]

2. Description of the Related Art As is well known, a ventilation system is provided on a table of a restaurant equipped with a gas range or a brazier, or on a top of a household gas range or an electric cooktop, and it is generated when cooking food. Hazardous gas workplaces, such as soldering or bonding workplaces, are designed to emit odors and heat of combustion, and such ventilators are also provided to minimize worker health losses from harmful gases. ing.

Meanwhile, such a general ventilation device has a structure in which a blower fan is installed in an exhaust duct connected to the outside, and the diameter and size of the exhaust duct or the capacity of the exhaust fan are limited. Only the combustion gas and combustion heat around the opening of the exhaust duct are mainly discharged, and most of the combustion gas and combustion heat diffused around the workplace or gas range before reaching the exhaust duct is not exhausted. There was a problem that remained in the room.

In order to solve such a problem, an air cleaning device using an air curtain is disclosed in Japanese Patent Application Laid-Open No. 48-6347 (hereinafter referred to as "prior art 1") so as to prevent contaminated air from diffusing to the surroundings. )
This is a system in which the outside air is sucked in by another suction air conditioner and injected into the room.In order to increase the temperature of the cold outdoor air in winter, a separate boiler is installed and operated. In order to cool the air, the air conditioner must be installed and operated, which results in an increase in the cost of installing the auxiliary equipment.

[0005] In order to solve such a problem of the "prior art 1", the present applicant uses an indoor air to eliminate the need for a separate air conditioner or air conditioner, and to use an air film exhaust system (Korea). Utility Model Registration No. 097360 (hereinafter referred to as “prior art 2”) was developed. However, as shown in FIG. 6, the exhaust duct 3, the exhaust fan 6, and the intake In addition to the fan 4, the exhaust pipe 7, and the injection port 8, separate flow pipes 5a are installed on both sides and the front of the exhaust duct 3, and pressure chambers 5b are installed at corresponding ends of the flow pipe 5a. Is injected from the injection port 8 through the flow pipe 5a and the pressure chamber 5b to form an air film around the gas range 2 so that the combustion heat and the combustion gas are not diffused to the periphery. It is a configuration.

However, such a "prior art 2" is provided with another flow pipe 5a and a pressure chamber 5b in addition to the basic structure, so that the production process and the production unit cost are increased, and are supplied from the intake fan 4. Since the pressure of the high-pressure air decreases while passing through various paths and the pressure of the jet at the injection port 8 decreases, there is a problem that the air film cannot be formed well. In order to solve such a problem, the present applicant has proposed an exhaust device using an air film (Korean Utility Model Application No. 96).
No. 25288 and Korean Utility Model Application No. 96-2584
No. 2, hereinafter referred to as "Prior Art 3" and "Prior Art 4").

Here, "Prior art 4" is replaced with "Prior art 3".
Since the guide plate 9 is added to the basic configuration of the above to minimize the air film formation length, and the remaining configuration is the same as the "prior art 3", only the configuration of "prior art 4" will be described below. Will be described.

As shown in FIG. 7, the basic structure of "Prior Art 4" is as follows: an exhaust pipe 7a, an exhaust duct 5d, an air chamber 3a, a blower fan 4a, an exhaust fan 6a, and an injection nozzle 8.
a is an essential component, and is a ventilator using an air film, which solves the above-mentioned problems of the "prior art 2" such as an increase in the production process and the production unit price, and a decrease in the air ejection pressure, whereby the air film is not formed well. did.

[0009]

However, in all the ventilators according to the prior arts 1 to 4, air is injected from the upper direction to the lower direction, but the combustion heat and the combustion gas are increased from the lower direction to the upper direction. The air injected downward around the exhaust duct and the air generated by a heating tool such as a gas range and the rising air collide with each other to create a vortex and the air film is ruptured. When cooking, this spark is dispersed by eddy currents, increasing heat loss,
There is a problem that the combustion heat and the combustion gas are not smoothly discharged into the exhaust duct, are leaked between the ruptured air films, and are diffused around.

[0010] In particular, there is a problem in that contaminated air and foreign substances inside the exhaust duct are mixed with the air injected downward to form an air film and are rapidly diffused into the room. An object of the present invention for solving the above-mentioned problem is to prevent a vortex from being generated between the exhaust and the air film by injecting air from the lower side to the upper side, and of course, to provide a ventilation device that accelerates the discharge of the exhaust. To provide.

[0011]

According to the ventilating apparatus of the present invention for achieving the above object, an air outflow hole for injecting the air flowing into the inside upward is formed in the peripheral edge, and the inside of the ventilating apparatus has a combustion chamber. An air chamber in which a device that generates heat or combustion gas is disposed, an injection nozzle that is installed to face the outflow hole of the air chamber, and that injects air supplied from the outflow hole to the upper side, and installed in one side of the air chamber. It is characterized by comprising a blower fan for blowing indoor air into the air chamber, and an exhaust duct located above the air chamber and having an exhaust fan installed inside the air fan.

According to another embodiment of the ventilation device of the present invention, a number of suction holes are formed in a peripheral surface of the exhaust duct, and an external duct having a downward opening is installed outside the exhaust duct. A vane inclined upward and inward is formed at the open end of the duct.

According to the ventilation device of the present invention, the air is injected from the lower side to the upper side, thereby not only pushing the combustion heat and the spread gas into the exhaust duct to further accelerate the discharge, The air film is not ruptured, and combustion heat and combustion gas are prevented from being diffused into the room.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific features and advantages of the present invention will be described more clearly with reference to the accompanying drawings.

FIG. 1 is a partial sectional view showing an embodiment in which a ventilation device according to the present invention is installed. A hollow rectangular parallelepiped air chamber 13 is provided on a cooking table 11 or a work table, and combustion heat or heat is provided thereon. A gas range 12 is provided as an example of a device for generating combustion gas and the like, and an exhaust duct 15 provided with an exhaust fan 16 is provided above the gas range 12. Here, as shown in FIGS. 1 and 2, the air chamber 13 has a blower fan 14 installed therein, and an air outflow hole 13 a formed around the upper side thereof. Hinged hole 1
3b is formed, to which the hinge pin 18a of the injection nozzle 18 is connected.

The ventilator of the present invention having such a structure operates the air blower fan 14 to operate the air chamber 1.
3. The air pressure in the inside 3 rises, and the compressed internal air
Air is injected upward through an injection nozzle 18 which is a relatively narrow passage through the exhaust duct 15a.
And is discharged to the outside by the exhaust fan 16.

Therefore, the combustion heat and the harmful gas inside the air film flow into the exhaust duct 15 by the injection of the air film and are discharged to the outside. Here, the combustion heat or combustion gas generated by the gas range 12 tends to diffuse to the surroundings, but is blocked by the air film injected upward.
At this time, while the combustion heat and the combustion gas are gradually raised upward by the exhaust fan 16, the injection force is further accelerated by the injection force of the air film injected from the lower direction to the upper direction, and the exhaust duct 15 Flowed into.

Therefore, the ventilator of the present invention accelerates the discharge of the exhaust by making the direction of the air injection coincide with the direction of the discharge of the exhaust. The problem that the air film was ruptured by the generation of a vortex was solved, and the conventional problem in which the harmful gas and the like inside the air film were formed and diffused outside was solved.

FIG. 3 is a partial sectional view showing one feature of the injection nozzle 18 according to the present invention.
8a, it is hinged to the air chamber 13 so that when the ventilator is driven, it is used upright so that the air ejection direction is directed upward, and when the ventilator is not operated, it is used. Since the nozzle 18 is rotated in the horizontal direction to be folded, the falling foreign substance is ejected by the injection nozzle 18.
, And the periphery thereof can be thoroughly cleaned while rotating the injection nozzle 18.

FIG. 4 shows another embodiment of the ventilating apparatus according to the present invention. In order to connect the upper part A of the gas range 12 and the exhaust fan 16 part, if the intake duct 21 is installed long between them, The heat from the upper portion A of the gas range 12 or the harmful gas, which was not discharged smoothly due to the fact that the distance to the exhaust fan 16 is long and the suction power is weak, can be discharged smoothly.

FIG. 5 is a sectional view showing still another embodiment of the ventilation device according to the present invention.
The gas range 12 is located thereon, and an exhaust duct 25 having a large number of suction holes 25a formed on the peripheral surface is provided on the upper portion of the gas range 12 according to the features of the present invention.

An exhaust fan 16 and a filter 22 are provided inside the exhaust duct 25, and an external duct 23 having a vane 24 inclined upward is formed on the outer periphery of the exhaust duct 25.

In the ventilation device having such a configuration, high-pressure air injected from the injection nozzle 18 of the air chamber 13 is injected into a limited space between the outside of the exhaust duct 25 and the inside of the external duct 23. The relatively high air ejection pressure is reduced by colliding with the upper inner side surface of the outer duct 23, and colliding with the air film jetted from below while descending in a reduced state, causing a vortex phenomenon inside the outer duct 23. As a result, the ejection pressure of the air film strongly ejected from the air chamber 13 is suddenly reduced.

On the other hand, a part of the air that comes into contact with the upper end of the outer duct 23 and then tries to flow backward to the open end is discharged from the vane 24.
The air in the external duct 23 whose ejection pressure has been reduced in this way is smoothly flowed into the suction hole 25a of the exhaust duct 25 by the exhaust fan 16 and discharged outside.

Therefore, in such a ventilating device, the strong air pressure ejected from the air chamber 13 is reduced by the external duct 23 so as to be smoothly discharged, and the backflow of the exhaust gas generated at this time is blocked by the vane 14. As a result, the combustion heat and the combustion gas are discharged more smoothly.

On the other hand, most of the combustion heat or harmful gas generators are installed and used at corners of a building. Therefore, considering various factors such as the capacity of a blower, it is not necessary to form an air film on all four sides. 2 or 3 exposed to the outside
The air film is formed only on the surface, and the partition plate 26 can be installed on the remaining surface, that is, the surface corresponding to the side wall of the building.

[0027]

As described above, according to the ventilation device of the present invention, the air is injected from the lower side to the upper side, so that a vortex is not generated between the exhaust and the air film. By accelerating the discharge, there is an effect that the indoor air conditioning and the comfortable indoor environment can be simultaneously maintained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a ventilation device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an air chamber according to the present invention.

FIG. 3 is an enlarged sectional view showing an injection nozzle according to the present invention.

FIG. 4 is a cross-sectional view illustrating a ventilation device according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a ventilation device according to still another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing one embodiment of the prior art.

FIG. 7 is a sectional view showing another embodiment of the prior art.

[Explanation of symbols]

 2 Gas Range 3, 5d Exhaust Duct 3a Air Chamber 4 Intake Fan 4a Blowing Fan 5a Flow Pipe 5b Pressure Chamber 6, 6a Exhaust Fan 7, 7a Exhaust Pipe 8 Injection Port 8a Injection Nozzle 9 Guide Plate 11 Cooking Table 12 Gas Range 13 Air Chamber 13a Air outflow hole 13b Hinge hole 14 Blower fan 15, 25 Exhaust duct 16 Exhaust fan 18 Injection nozzle 18a Hinge pin 21 Suction duct 22 Filter 23 External duct 24 Vane 25a Suction hole

Claims (2)

[Claims] 1. An air chamber in which an air outflow hole for injecting air flowing into the inside upward is formed in a peripheral edge, and a device for generating combustion heat or combustion gas or the like is disposed therein, and the air chamber. An injection nozzle that is installed opposite to the outflow hole and injects air supplied from the outflow hole upward, and a blower fan that is installed on one side of the air chamber and blows indoor air into the air chamber, An exhaust duct having an exhaust fan installed above the air chamber and inside the exhaust chamber. 2. An exhaust duct, wherein a plurality of suction holes are formed in a peripheral surface of the exhaust duct, and an external duct having a downward opening is installed outside the exhaust duct. The ventilator according to claim 1, wherein a vane inclined to the bottom is formed.