JPS61125538A - Ventilation fan - Google Patents

Abstract

PURPOSE:To effectively suck up soots from a duct without dispersing the soots into the room during the cooking and to discharge the same out of the room by providing eaves at the upper part of a duct suction port, which curve air flowing down from an exhaust port of a blower part to suppress the rise of soots and suck up the same into the duct. CONSTITUTION:Air flowing down from an exhaust port 32 by means of an air feed fan 22 comes into collision with eaves 46 attached to the upper pat of a suction port 41, and curves frontwardly. This curved air stream wraps therein soots generated during cooking to suppress the uprising of the soots, and can efficiently suck up them into the duct 38 through the suction port 41. Further, since auxiliary eaves 48 extensible frontwardly of the eaves 46 and foldable, are mounted on the eaves 46, soots can be sucked up effectively into the duct 38 without leaking even in the case of using a large size pan or an iron plate. A major part of the soots sucked up into the duct 38 are collected, and hence exhaust air is purified and discharged out of the room.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ventilation fan that exhausts oil smoke, steam, exhaust gas, etc. generated during cooking in a kitchen range to the outside.

[Conventional technology]

Conventionally, this type of ventilation fan has generally had a suction port located almost directly above the range, and has a mechanism for sucking in airflow from the range and discharging it outdoors. However, since the above-mentioned ventilation fan has an inlet 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 exhaust such oily smoke. Replacing and cleaning the filter used in the ventilation fan was extremely difficult because the ventilation fan was located above the user.

Further, FIG. 6 shows a cooking exhaust system having a suction port at the rear of the cooking table, as disclosed in, for example, Japanese Patent Application Laid-Open No. 57-131949. This exhaust device forms a rising part 3 at the rear of the cooking table 1 on which the gas range 2't- is arranged or arranged on the upper surface of the cooking table 1, and an air intake port 45H is formed on the upper surface of the rising part 3.
A forward airflow guide plate 6 is provided above the microwave oven 2 on a wall 5 that is inclined toward the microwave oven 2 side and stands upright in contact with the rear portion of the rising portion 3. A duct 7 is connected to the intake port 4, and a blower 9 is provided at the exhaust port 8 at the end of the duct 7 to form an exhaust path, so that oil smoke, etc. generated during cooking is sucked through the exhaust port 4, and the exhaust port 8 More and more waste is being discharged outdoors. In the figure, reference numerals 10 and 11 are an airflow guide grid, 12 is a skylight provided at the bottom of the range 2, 13 is a skyfire forced smoke tube, and 14 is an opening of this smoke tube 13.

[Problem that the invention seeks to solve]

The conventional cooking exhaust device as described above sucks oil smoke generated during cooking without spreading upward, but since the exhaust path is formed on the back of the cooking table l,
This exhaust path space required the cooking table 1 to be brought forward, and there were also problems such as the space on the front wall of the recess 1 not being used effectively. Additionally, since the exhaust air is directed downwards, for example, when cooking in a large pot or griddle on the stove, there is a problem that some of the oil smoke that is generated may not be fully absorbed and spread into the room.

This invention was made to solve this problem, and it efficiently sucks up oily smoke generated during cooking from the air intake port at the lower end of the duct that hangs down from the air blower mechanism installed above the range, and directs it to the outdoors. The purpose is to obtain a ventilation fan that discharges air.

[Means for solving problems]

The ventilation fan of the present invention is provided with a ventilation mechanism section having an air supply fan, a discharge port for blowing air downward, an exhaust fan, and a suction section above the range, and a suction section that is located close to the range to remove oil smoke from the range. A duct is connected to the duct, which has an intake port that sucks in air, and an eaves are provided above the intake port to bend the outside air flowing down from the discharge port and suppress the rise of oil smoke, etc., and the eaves can extend forward. It is equipped with a foldable auxiliary eaves.

[Effect]

According to this invention, the air flowing down from the discharge port by the air supply fan collides with the eaves attached to the upper part of the intake port and curves forward, and this curved airflow envelops oil smoke etc. generated during cooking and rises. can be efficiently sucked into the duct from the intake port. Furthermore, since a collapsible auxiliary eaves that can extend forward is attached to the eaves, even when large pots or iron plates are used, oil smoke can be effectively sucked into the duct without leaking.

〔Example〕

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a side sectional view of the ventilation fan, FIG. 2 is a front view, and FIG. 3.4 is an exploded perspective view of the ventilation fan. In the figure, reference numeral 15 denotes an outer box for the air blowing mechanism, and the inside of this outer box 15 is partitioned by a partition plate 16. 17 is an inlet plate 1st- in one box.
An exhaust fan 20 is housed in the fan casing 19 and an exhaust fan motor 20 is attached to the front cover 21 of the outer box 15. 22 is an air supply fan housed in the other box and housed in a fan casing 23, and 24 is an air supply fan motor attached to the front cup <-21. 25 is an exhaust ergo attached to the top plate 26 of the outer box 15, and 27 is an air supply ergo. 2
8 is a switch mounting case, and switch 29 is installed in this case.
and a lighting fixture 30, an air outlet 31 on the lower front side of the lower surface of the case 28 that blows outside air from an air supply fan onto the face of the cook, and an outlet 3 that blows out air downwardly behind it.
2. 33 is a mounting screw configured as described above and fixing the outer box 15 of the air blowing mechanism section to the wall surface 34 above the microwave table; 35 is a piping duct connected to the air supply/exhaust Ergo 26 and 27, respectively; This is a T-vent cap attached to the outdoor opening of the duct 35.

Reference numeral 38 denotes a duct connected to a suction section 37 by an exhaust fan 17 formed on the rear lower surface of the outer box 15 of the blower mechanism section. An intake port 41 made of a separate member and opening diagonally toward 40 is attached.

FIG. 5 is a detailed view of the duct 38, and 42 is the intake port 41.
43 is a filter disposed diagonally inside the duct 38, the upper end of the filter 43 is supported by a hook 44 attached to the rear wall 38a of the duct, and the lower end is supported by a knob together with the intake port 41. It is fixed with screws 45. From this point K, the intake port 41 and filter 43 can be removed by removing the thumbscrew 45. 46 is duct 38
This eaves 46 extends from the front wall 38b.
The height of the eaves 46 can be changed by selectively hanging on the eaves 47 formed in stages on the side wall 38C of the duct 38. Reference numeral 48 denotes an auxiliary eaves attached to the tip of the eaves 46 via a hinge 49t. Normally, as shown in FIG. When this happens, the full depth and length of the eaves can be extended. 50 is a fireproof shutter, the lower end of which is rotatably supported by a support plate 51 attached to the lower end of the rear wall of the duct 38. A fuse 52 is fixed to the fire shutter 50 with a screw 54 via a mounting plate 53t, and a spring 56 is stretched between the fuse 52 and a support plate 55 attached to the duct rear wall 38aK to vertically pull up the fire shutter 50. ing. Reference numeral 57 denotes a spring stretched between the mounting plate 53 and the support plate 51, and when the fuse 52 is blown, the fire shutter 50 is rotated by the spring force of the spring 57 to close the intake port 41. In addition,
Reference numeral 58 indicates a hanging cabinet disposed on the left and right sides of the blower mechanism section, and 59 indicates a pot on the range 40.

Next, the operation will be explained. First, the switch 29 is activated to rotate the exhaust fan 17 and the air supply fan 22t. When cooking is performed using the pot 59 in the range 40, oil smoke and waste gas are sucked into the duct 38 from the intake port 41, pass through the filter 43, rise inside the duct 38, pass through the exhaust fan 17, and then pass through the Ergo 25t- It is discharged to the outside of the layer from the through piping duct 35. In addition, the air supply fan 22
Due to the rotation of V, air is sucked in from the outside through L & 27, is blown out downward from the outlet 32 of the switch case 28, hits the eaves 46, and curves in the direction of the arrow. At this time, some of the oil smoke and the like from the pan 59 leaking out from the intake port 41 is enveloped by the air flow and is suppressed from rising, so that all of the oil smoke is sucked in from the intake port 41. Eaves 4
6, the air flow velocity is 0.5 to 0.9 m/s, and the angle of the eaves is 5 to IO degrees, so that oil smoke and the like can be sucked in most efficiently. Note that when cooking with a large pot, iron plate, etc., the range of oil smoke generated becomes wider, so in such a case, the auxiliary eaves 48 may be expanded to extend the length of the eaves. As a result, the air that flows down from the discharge port 32 and bends around the eaves reaches the outer periphery of the auxiliary eaves 48.
This air flow suppresses the rise of oil smoke and the like, and all oil smoke can be effectively sucked into the duct 38 from the intake port 41.

In addition, some of the air supplied by the air supply fan 22 is supplied to the air outlet 31.
Since it can be blown out and sprayed onto the face of the cook to relieve the heat during cooking, the working conditions for cooking can be greatly improved.

However, in the winter, it is preferable to close the discharge port 32 or change the direction of the wind to a direction other than the face so that there is no problem even in the winter.

On the other hand, the oil smoke sucked into the duct 38 is filtered through the filter 4.
Most of the exhaust air is collected in step 3, so it is purified and discharged outdoors. However, during long periods of toilet use, oil adheres to the inner wall of the duct 38, and this flows down the wall and forms an oil sump v42. Accumulate. Therefore, to dispose of oil, the intake port 41 and filter 43 can be removed at the same time by removing the thumbscrew 45.
What is necessary is to drain the oil in 42 and clean or replace the filter 43.

Further, in the fire prevention shutter 50, when high-temperature air or flame is sucked from the intake port 41, the fuse 52 is blown.
As a result, the spring force of the spring 57 causes the fire shutter 5 to
0 rotates about the support plate 51 as a fulcrum as shown by the imaginary line in FIG. 5 and closes the intake port 41, thereby preventing flames from flowing into the duct 38. In addition, to reset the fire shutter 50, remove the intake port 41 and replace the hue-e52.
The fuse 52 may be latched onto the spring 56.

〔Effect of the invention〕

As explained above, in this invention, an eaves are provided above the duct intake port to bend the air flowing down from the discharge port of the blower mechanism, suppress the rise of oil smoke, etc., and suck it into the duct. It is possible to effectively suck oil smoke etc. through the duct and discharge it outside without dispersing it indoors.In addition, a collapsible auxiliary eaves that extends forward from the eaves is installed, so that it can be used for large pots, etc. Even in the case of iron plates, etc., there is an effect that oil smoke etc. can be sucked into the duct and discharged outside without leaking into the room.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a ventilation fan showing an embodiment of the present invention;
2 is a front view, FIGS. 3 and 4 are exploded perspective views, FIG. 5 is a detailed enlarged sectional view of the duct, and FIG. 11116 is a sectional view of a conventional cooking exhaust device. 17...Exhaust fan, 22...Air supply fan, 3
DESCRIPTION OF SYMBOLS 1... Air outlet, 32... Discharge port, 37... Suction part, 38... Duct, 40... Range, 41... Intake port, 43... Filter, 46... Eaves, 47
... Hinge, 48... Auxiliary eaves, 50... Fire shutter. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A blower mechanism section is provided above the microwave oven in the kitchen, each having an air supply fan, a discharge port for blowing air downward, an exhaust fan, and a suction section for sucking air, and the suction section is located close to the microwave. Connect a duct with an intake port that sucks in oil smoke, etc. from the range, and project an eaves in front of the upper part of the intake port to bend the air flowing down from the outlet and use this air to suppress the rise of oil smoke, etc. and guide it into the duct. , a ventilation fan characterized in that a collapsible auxiliary eaves that can extend in front of the eaves is attached to the eaves. (2) The ventilation fan according to claim 1, wherein the auxiliary eaves are rotatable around the range.