JP3098954B2 - Inside air exhaust device containing hot air - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inside air discharging device, and more particularly, to an air conditioning system for inside air containing hot air, odor, smoke, moisture, etc. (hereinafter referred to as hot air) generated by cooking in a microwave oven. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inside air discharging device capable of efficiently discharging only inside air such as hot air to the outside of a closed room while minimizing the influence of the air inside the closed room.

[0002]

2. Description of the Related Art Conventionally, in order to discharge inside air such as hot air from a range, a fan driven by a motor is provided in a hole formed in a wall above the range, and hot air or the like from the range is generated by a suction force generated from the fan. It is well known that the inside air is forcibly exhausted to the outside together with other room air.

On the other hand, in recent years, the airtightness of the living space has been increased along with the improvement of the housing construction, and the demand for comfort in living has been increased. Therefore, air conditioning (cooling / heating, dehumidification / humidification, deodorization, sterilization, ion adjustment, etc.) ) Has become routine.

[0004] Under such an air conditioning condition, even if a conventional simple exhaust device is used in a closed room, the indoor air pressure becomes negative pressure compared to the outdoor air pressure, and the indoor air pressure becomes negative. However, this prevents exhaust of inside air such as hot air and cancels the suction force of the exhaust fan, so that improvement in exhaust efficiency cannot be expected. Therefore, it is known to provide an air supply port on the other wall surface of the room, to take in air from outside the room, supplement the exhausted room air, and keep the air pressure inside and outside the room in equilibrium.

For example, JP-A-59-210244 and JP-A-62-105441 disclose a range hood in which
Disclosed is a device that includes a duct for taking in outdoor air separately from a divided duct and an exhaust duct and a fan, and supplies the taken-in external air to a room through a hole provided in a range hood.

[0006]

Conventionally, in order to prevent a negative pressure in the room due to the discharge of the inside air, a method of taking in outside air into the room and supplementing the air in the room discharged by the exhaust fan is as follows. Although the exhaust efficiency is improved, the air in the room is ventilated, and there is a defect that the effect of the air conditioning is reduced.

On the other hand, conventionally, oil generated during cooking tends to adhere to an exhaust fan provided in an exhaust duct, and it is necessary to periodically perform a cleaning operation. Since the fan and motor are directly connected to the same rotating shaft and the electrical components are located in close proximity to the fan, electric shock accidents and electrical component failures may occur when cleaning the fans and ducts with water such as detergent. Was.

A first object of the present invention is to provide an inside air discharging device for efficiently exhausting only inside air such as hot air from a range without ventilating room air.

A second object of the present invention is to provide an inside air discharging device which makes it possible to perform a cleaning operation of an exhaust fan more easily.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an inside air discharging device according to the present invention is provided in a range hood for discharging inside air such as hot air and provided along an exhaust duct and a passage of the exhaust duct. A partition plate formed at the upper surface of the range hood, the partition plate dividing the passage into two, and a forced exhaust passage and an inside air exhaust passage formed by introducing outside air; and a partition plate provided upstream of the forced exhaust passage. An electric fan for introducing outside air provided in the outside air introduction hole and the passage thereof, and a floating fan provided so that a rotation radius extends to both of the passages immediately downstream of the partition plate. It is rotated by forced exhaust by the introduction of outside air, and the inside air is guided and exhausted to the outside by using the rotation of the fan caused by the rotation.

The inside air discharge device according to the present invention further comprises a nozzle or a slit that opens toward the floating fan upstream of the inside air exhaust passage, in addition to the above configuration.
A part of the outside air flowing to the forced exhaust passage is diverted to the nozzle or the slit, and the inside air on the lower side of the partition plate is conveyed to the floating fan.

[0012] If only the inside air is continuously discharged from the closed room, the inside air pressure is reduced, which causes a decrease in the discharge of the inside air. In this case, however, the outside air distributed to the lower surface of the partition plate is reduced. Is naturally cooled below the range hood because it is colder than the inside air, and is mixed into the inside air, whereby the decrease in the internal pressure is corrected and the internal pressure returns to the normal pressure. According to the present invention, since the return of the internal air pressure to the normal pressure is performed so as not to disturb the internal air such as the hot air and the like, the internal air such as the hot air can be continuously discharged.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, reference numeral 1 denotes an indoor hood opened downward, and a range 1 is provided below the opening.
1 is disposed, and inside air 12 such as hot air generated from the range is provided.
Is the exhaust duct 2 from the opening of the indoor hood 1 (see FIG. 1)
Is discharged to the outside of the room via an inside air discharge passage 22 provided in the lower half of the vehicle.

FIG. 1 is a sectional view of an inside air discharge device according to the present invention, wherein the exhaust duct 2 and the outside air intake duct 3 are provided through holes provided in a wall surface 10 of a building.

The partition plate 5 is provided along the exhaust duct 2 and forms the upper surface of the indoor hood 1. This partition plate 5
As a result, the exhaust duct 2 is divided into two to form two passages. These two passages are a forced exhaust passage 21 for introducing outside air and a passage 22 for discharging inside air such as hot air from a range. The outside air forced exhaust passage 21 is connected to the outside air suction duct 3.

An outside air suction fan 33 driven by a motor 32 is provided at the suction port 31 of the outside air suction duct 3. Immediately downstream of the partition plate 5 at the exhaust port 23 of the exhaust duct 2, the two passages 21 and An idler fan 24 having no drive means is provided so that the rotation radius extends to 22.

Further, the end of the partition plate 5 on the exhaust upstream side is
A communication passage 51 is provided along the inner wall of the indoor hood 1 so as to be spaced from the inner wall of the indoor hood 1 and connects the outside air forced exhaust passage 21 and the inside air discharge passage 22. At the outlet on the discharge passage 22 side, there is provided a nozzle or slit 52 that opens toward the floating fan 24.
Is provided.

In the present embodiment, the communication passage 51 is
The width of the gap formed by the vertical surface of the flow dividing plate 53 and the inner wall of the indoor hood 1, and the width of the gap formed by the mounting corner portion of the current dividing plate 53 and the inner wall of the indoor hood 1, determines the amount of inflow of the intake air into the communication passage 5. Since it is determined, it is also possible to provide a configuration (not shown) capable of adjusting the gap interval, or another configuration, for example, a combination of an inflow amount adjustment valve and a pipe.

In this embodiment, the nozzle or slit 52 is formed of a plate-like member.
It is also possible to install a nozzle that opens toward the floating fan 24 on the lower surface of the partition plate 5 and provide a combination with the inflow amount adjustment valve and the communication pipe described in the preceding section.

In the above configuration, first, the flow of the sucked outside air will be described. When the outside air suction fan 33 is rotated by the motor 32, the outside air is sucked into the outside air suction duct 3 as indicated by an arrow 34. The sucked outside air travels in the outside air suction duct 3 and proceeds downward along the downwardly inclined inner wall of the indoor hood 1 as indicated by an arrow 34. 53
About 90% of the air flows into the forced outside air forced exhaust passage 21, and the remaining about 10% of the outside air is sucked.
Passes through the communication passage 51 between the flow dividing plate 53 and the inner wall of the indoor hood 1, passes through the nozzle or slit 52, immediately below the partition plate 5, that is, along the inside air discharge passage 22, and the exhaust port 23.
, And the blown airflow becomes an inside air carrying airflow such as hot air.

In this embodiment, the ratio of the intake outside air divided into the intake outside air discharge passage and the communication passage is about 9: 1. In short, however, this is because the intake outside air ejected from the nozzle or the slit 52 moves freely. It is only necessary to maintain the momentum to reach the fan 24, and the ratio should be adjusted by increasing or decreasing the ratio at the time of assembly according to the depth of the indoor hood 1 or the like.

The intake outside air that has entered the outside air forced exhaust passage 21 flows toward the exhaust port 23 and reaches the floating fan 24 provided at the most downstream of the exhaust duct 2. At that time, the suctioned outside air is forced to push the blades of the floating fan 24 when passing through the fan 24, and is discharged to the exhaust port 23.
The idler fan 24 is provided with a rotation in a direction in which air in the room is discharged outside the room.

On the other hand, the flow of inside air such as hot air from the range 11 installed below the indoor hood 1 is as follows.

The inside air 12 such as hot air from the range 11 expands due to being heated, and expands in volume, and ascending airflow reaches the lower opening of the indoor hood 1 while increasing its volume, and enters the indoor hood 1. enter in.

Inside air 1 such as hot air that has entered indoor hood 1
2 further rises inside the hood 1 to reach the upper surface of the inside air discharge passage 22 formed by the partition plate 5, and the inside air near the idler fan 24 is entrained by the swirling of the idler fan 24 and passes through the exhaust port 23. It is discharged outside the room.

While staying, the inside air such as hot air at a position distant from the idler fan 24 is guided by the above-described transport airflow ejected from the nozzle or the slit 52 and is transported toward the idler fan 24.

The floating fan 24 installed at the most downstream of the exhaust duct 2 is rotated in the direction of discharging the indoor air to the outside of the room by the discharge force of the intake outside air. , The inside air such as hot air is discharged from the exhaust port 23 to the outside by the swirling of the floating fan 24 as described above.

The present invention is not limited to the above-described embodiment, but includes any design modifications that do not depart from the scope of the claims.

[0029]

As described above in detail, the inside air discharge device according to the present invention has the passage of the exhaust duct divided into two by the partition plate.
In addition to the inside air exhaust passage, a forced exhaust passage is also provided along with the introduction of outside air, and a floating fan is provided immediately downstream of the partition plate so that both passages have a radius of rotation. The internal air in the exhaust passage is guided and exhausted to the outside by using the rotation of the fan resulting from the rotation, so that the expanded internal air including hot air disturbs the air condition in the closed room. We succeeded in minimizing emissions to the outside.

Furthermore, in the present invention, the inside air such as hot air on the lower surface of the partition plate is blown from the nozzle or slit toward the floating fan, so that the effects of the above-mentioned invention can be obtained. It is possible to further improve.

Further, a floating fan is disposed on the inside air discharge passage directly contacted by hot air from a range containing oil, and no electric parts are used. Therefore, the inside air discharge passage for hot air and the like is cleaned. Since it is possible to use a detergent containing a large amount of water and wash it with water, it is possible to keep the inside air discharge passage of hot air etc. clean,
Offensive odors caused by oil stains can be eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional side view of an inside air discharging device according to the present invention;

FIG. 2 is a perspective view showing a use state of the inside air discharge device according to the present invention,

FIG. 3 is a partially cutaway perspective view of the inside air discharge device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor hood 11 Range 12 Inside air such as hot air 2 Exhaust duct 21 Outside air forced exhaust passage formed in the upper half part 22 Inside air discharge passage formed in the lower half part 23 Exhaust port 24 Floating fan 3 Outside air intake duct 31 Suction port 32 Motor 33 Outside air suction fan 34 Suction outside air 4 Wall 5 Partition plate 51 Communication passage 52 Nozzle or slit 53 Dividing plate

Claims (2)

(57) [Claims] 1. A range hood for discharging inside air such as hot air, comprising: an exhaust duct; a partition plate provided along a passage of the exhaust duct and forming an upper surface of the range hood; A forced exhaust passage and an inside air exhaust passage formed by dividing the passage into two, and an outside air introduction hole provided upstream of the forced exhaust passage and an electric fan for introducing outside air provided in the passage; A floating fan provided so as to extend a radius of rotation to both of the passages immediately downstream of the partition plate, wherein the floating fan is rotated by forced exhaust by introduction of the outside air, and the rotation of the fan caused by the rotation is performed. A device for discharging inside air containing hot air, wherein the inside air is guided and exhausted to the outside by utilizing. 2. A partition plate provided with a nozzle or a slit opening toward the floating fan upstream of the exhaust passage of the inside air, and diverting a part of the outside air toward the forced exhaust passage through the nozzle or the slit. 2. The device for discharging inside air containing hot air according to claim 1, wherein the inside air on the lower side is conveyed toward the floating fan. 3.