JPS61291856A - Ventilation device - Google Patents

Abstract

PURPOSE:To facilitate the cleaning of oil stuck inside the fan casing by providing the underside of the fan casing containing the ventilation fan with an opening that allow the communication between the inside and outside. CONSTITUTION:The underside of the fan casing 19 containing the ventilation fan 17 is provided with an opening 19a that communicates between its inside and outside and is open in the direction opposite to the air flow direction A in the fan casing 19. When cooling is being done, oily smoke and exhaust fumes are drawn into the duct 38 from the air inlet 41. It is, then, cleaned as it passes through the filter 43, and moves upward in the duct 38 to the ventilation fan 17 to the ventilation elbow 25 eventually to be discharged outside from the ventilation duct 35. As there exists a high pressure inside the fan casing 19, oily substances stuck to the inner wall of the fan casing 19 are discharged outside from the opening 19a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ventilation system for exhausting oil smoke, steam, exhaust gas, etc. generated during cooking to the outdoors.

[Conventional technology]

Conventionally, this type of ventilation fan has generally had a suction port located almost directly above the range, and has a mechanism that sucks up the rising air from the range and discharges it outdoors. However, since the ventilation fan mentioned above has its suction port set at a predetermined height from the range, oily smoke rising from the range tends to spread from the middle, and a large-capacity blower is required to remove such oily smoke. Yes, and also the replacement of filters used in ventilation fans.

Cleaning was extremely difficult because the ventilation fan was located above the user.

For example, as shown in Japanese Unexamined Patent Publication No. 51-131949, a ventilation system having a suction port provided at the rear of the cooking table has been proposed, and this is shown in FIG.

This exhaust system is equipped with a gas range (2
), and the rising part (3) is placed at the rear of this cooking table (1).
The air inlet (4) is formed on the upper surface of this rising part (3) and is inclined toward the range (21 side). 2) is provided with a forward airflow guide plate (6) projecting upward.A duct (7) is connected to the intake port (4), and the duct (7)
An exhaust fan (9) is provided at the exhaust port (8) at the terminal end of the exhaust fan (9) to form an exhaust path.

Oil smoke, etc. generated during cooking is sucked in through the intake port (4).
The air is discharged outdoors from the exhaust port (8). Note that 01. αυ is the airflow guide grid, Q3 is the ceiling installed at the bottom of the range (2), (L3 is the forced imaginary part of the ceiling, and (141 is the opening of this imaginary part α).

[Problems that the invention aims to solve]

Conventional ventilation devices are configured as described above, and are able to suck in oil smoke, etc. generated during cooking without spreading upward; however, because the exhaust path is formed on the back of the cooking table (1), This exhaust path space requires the entire cooking table (1) to be brought out to the front, and there are problems such as the space on the front wall of the cooking table (1) not being used effectively. Furthermore, since the exhaust flow is downward, there is a problem in that a large exhaust fan (9) is required for sufficient exhaustion.

This invention was made to solve the above problems, and it does not take up space behind the cooking utensils and can sufficiently exhaust oil smoke etc. with a small exhaust fan, and also has a fan casing that houses the exhaust fan. To provide a ventilation device in which oil adhering to the inside can be easily disposed of.

[Means for solving problems]

The ventilation device according to the present invention is provided with an outlet above the cooking utensils that blows outside air sucked in by an air supply fan downward, and a suction part into which air is sucked in by an exhaust fan, and the suction part has oil smoke generated during cooking. A duct is connected to the duct having an intake port for sucking oil smoke, etc., and an eaves is provided above the intake port to curve the air flowing down from the discharge port and completely suppress the rise of oil smoke, etc.

An opening is provided on the lower surface of the fan casing in which the exhaust fan is housed, allowing communication between the inside and outside of the fan casing.

[Effect]

In this invention, the air flowing down from the discharge port leading to the air supply fan collides with the eaves provided in the duct and is deflected.
This curved flow of air envelops the oil smoke generated during cooking and suppresses its rise.

Oil smoke, etc. is sucked in through the duct's intake port. Also.

Since the inside of the fan casing of the exhaust fan is under high pressure,
Oil adhering to the inside of the fan casing is discharged to the outside through the opening.

〔Example〕

Figures 1 to 6 are diagrams showing one embodiment of the present invention.
The figure is an exploded perspective view of essential parts, Figure 2 is an enlarged vertical cross-sectional view of the fan casing, Figure 3 is an enlarged cross-sectional view taken along line m-m in Figure 2, and Figure 4
The figure is a side view, and Figure 5 is a front view.

FIG. 6 is an exploded perspective view of the main parts, and FIG. 7 is an enlarged vertical sectional view of the lower part of the duct.

In the figure, αe is an outer box of the blower mechanism, and this outer box αG is partitioned by a partition plate (16a). αη is an exhaust fan housed in one box via an inlet plate, (1
1 is the fan casing that houses the exhaust fan αη.

The inner and outer surfaces of the fan casing α are connected to the lower surface of the fan casing α.
It has an opening (19a) t- which opens in the direction opposite to the direction A of the wind flow within the range. (A) is the exhaust fan electric motor attached to the front cover c2fJ of the outer box α0.

4 is the air supply fan that is housed in the other box and is housed in the fan casing, @ is the electric motor for the air supply fan attached to the front cover I2]), and 2!9 is the top plate of the outer box tie ( The exhaust elbow is attached to
) and lighting equipment ■ are installed, and there is an air outlet c3υ on the front side of the lower surface of the case (end) that blows outside air from the air supply fan (2) onto the cook's face, and an outlet 03 that blows out air downwards behind it. I am prepared. (To) is the wall above the cooking table of the outer box αel of the blower mechanism configured as described above (B)
Mounting screw to fix to, @ is air supply and exhaust elbow (c)
, @ are the piping ducts connected respectively, (to) is the vent cap attached to the outdoor opening of this duct (to), @ is the suction part that opens on the rear lower surface of outer box ae, @
is a duct connected to the suction part 0, and the duct (to) hangs down along the wall surface, and the lower end of the duct is connected to the cooking utensils such as a range on the cooking table (towards 40). An intake port (1υ) made of a separate member is attached. (43 is an oil reservoir provided at the bottom of the intake port, and (C) is a filter that is arranged at an angle inside the duct to clean the exhaust air.) , its upper end is supported by a hook attached to the duct rear wall (38a).

The lower end is fixed with a thumbscrew along with the intake port (AD).
) It is possible to change the height of the eaves by selectively attaching L7 to the eaves ρ formed in stages.

Note that the eaves may extend to the left and right sides of the duct. - is a fire protection shutter, the lower end of which is attached to the base plate (attached to the lower end of the rear wall (Wa) of the duct (to)).
41 so as to be rotatable. ■ is a fuse fixed to the fire shutter with a screw (52) via a mounting plate (51), and there is no tension between this fuse ring and a support plate (53) attached to the rear wall of the duct (38m). (54) is stretched to vertically pull up the fire shutter. (
55) is a tension spring stretched between the mounting plate (51) and the base plate K1, (56) is a chestnut cabinet installed on the left and right sides of the ventilation mechanism, and (57) is a pane above the cooking utensils. be.

In a ventilation system configured as described above.

First, operate the switch handle to open the exhaust fan a and the air supply fan (2).
Rotate. When cooking is performed using the cooking utensil (41) using the pot (57), oil smoke and exhaust gas are sucked into the duct (to) from the intake port (AD).Then, they pass through the filter (to) and are purified. (to), ascends through the exhaust fan αη, passes through the exhaust elbow (c), and enters the exhaust pipe duct (
) is discharged outdoors. At this time, the oil adhering to the inner surface of the fan casing a1 is discharged to the outside from the opening (19a) due to the high pressure inside the fan casing member. Therefore, even if the exhaust fan αη is used for a long period of time, oil will not accumulate inside the fan casing (1'J).In addition, the opening (19a) opens in the opposite direction to the wind flow direction A. Therefore, there is little air leakage from inside the fan casing C1l while the exhaust fan αη is rotating.

On the other hand, due to the rotation of the air supply fan (2), the outside air sucked in from outside through the air supply elbow @ is blown downward from the outlet (to) of the switch case (to), hits the eaves, and moves in the direction of the arrow. It curves into. This curved flow of air envelops some of the oil smoke leaking from the intake port αυ and suppresses its rise. therefore.

All oil smoke etc. are sucked in through the intake port QD. In addition,
The air flow velocity at the eaves is 0.5 to 0.9 m/a +
When the angle of the eaves is 5 to 10 degrees, oil smoke, etc. can be sucked in most efficiently.

In addition, some air is supplied by the air supply fan (2), air outlet 01)
It was blown out and hit the cook in the face.

Since the heat during cooking can be alleviated, the working conditions for cooking can be greatly improved. However, in the winter, it is preferable to close the air outlet OD or change the direction of the wind to a direction other than the face so that there is no problem even in the winter. In addition, when the height dimension of the pan (57) changes, the canopy can be adjusted to correspond to the height.

On the other hand, most of the oil smoke sucked into the duct (to) is collected by the filter (to), so the exhaust gas is purified and discharged outdoors. To)
Oil adheres to the inner wall of the wall, and this flows down the wall and forms an oil pool]
Collects 3 times. Therefore, the oil disposal is done with the thumbscrew (4
! By removing 9, the suction port I and the filter can be removed at the same time, so all you need to do is drain the oil in the oil reservoir (6) and clean or replace the filter.

t7IC, when high temperature air or flame is sucked in from the intake port @D, if the fuse (to) is blown, it will snap back (55
), the fire protection shutter rotates 1. Since the intake port 11) is closed, flame can be prevented from entering the duct. Please note that resetting the fire shutter is done when the intake air
All you have to do is remove the fuse, replace the fuse trowel, and hook the fuse to the puller (54).

〔Effect of the invention〕

As explained above, this invention provides an outlet above the cooking utensil that blows out the outside air sucked in by the air supply fan downwards, and a suction part into which air is sucked in by the exhaust fan, and the suction part has a A duct with an intake port that sucks in oil smoke, etc.) is connected to the duct, and an eaves is provided above the intake port to bend the air flowing down from the discharge port and suppress the rise of oil smoke, etc., and an exhaust fan is housed. The lower surface of the fan casing is provided with an opening that communicates the inside and outside of the fan casing.

As a result, the space behind the cooking utensils can be used effectively, and the exhaust path to the outside can be designed freely.In addition, the oil adhering to the inside of the fan casing that houses the exhaust fan can be discharged from the opening, and the oil can be disposed of. It has an effect that can be done easily.

[Brief explanation of drawings]

1 to T are views showing an embodiment of the ventilation system according to the present invention, in which FIG. 1 is an exploded perspective view of the main parts, and FIG. 2 is an enlarged vertical sectional view of the fan casing of FIG. 1. Figure 3 is a sectional view taken along the line m-m in Figure 2, Figure 4 is a longitudinal side view, Figure 5 is a front view, Figure 6 is an exploded perspective view of the main parts, and Figure 1 is a cross-sectional view of the duct in Figure 1. Lower longitudinal enlarged view. FIG. 8 is a longitudinal section showing a conventional ventilation system. In the figure, aη is an exhaust fan, (11 is a fan casing, (19a) is an opening, (2) is an air supply fan, (to) is a discharge port, 0η is a suction part, @ is a duct, and 雛 is a cooking utensil. αη is the intake port. ni) is the eaves. Note that the same reference numerals in Figure 1 indicate the same parts. Figure 1 Figure 2 Figure 3 WJ /'7a 14! l! ! f Fig. 5- Fig. 6 2 Fig. 8

Claims (2)

[Claims] (1) A discharge port is provided above the cooking utensil to blow out the outside air sucked in by the air supply fan, and a suction portion is provided where the air is sucked in by the exhaust fan. A duct is connected to the duct having an intake port that is opened to suck in oily smoke, etc. generated during cooking, and an eaves is provided above the intake port to bend the air flowing down from the outlet and suppress the rise of the oily smoke, etc. 1. A ventilation device comprising: a fan casing for housing the exhaust fan; and an opening provided on the lower surface of the fan casing to communicate its inner and outer surfaces. (2) The ventilation device according to claim 1, wherein the opening is opened in the fan casing in a direction opposite to the direction of the wind flow.