JPH04203724A - Ventilating fan - Google Patents

Abstract

PURPOSE:To protect a human finger from being injured resultant from contact with a blade in motion by providing a ventilating fan switch which is turned off only when a filter frame is mounted on a cover. CONSTITUTION:A frame body 1 fitted into an opening on a kitchen wall is built-in with a blade 4 fixed with a motor 3 horizontally supported by a support arm 2. A shutter 5 is installed in an opening section on an exhaust air side so that ir may be opened and closed freely while a cover 6 having a fan guide section is installed in an opening section on an iar intake side. A filter frame 8 having a filter 7 is installed in the front of the cover 6 in such a manner that it may be freely removed. The cover 6 is closed only when the cover frame 8 is mounted to the cover 6. A switch 9 is also installed to drive a motor 3. When the filter frame 8 is removed from the cover 6 in order to clean or replace the filter 7, the switch 9 mounted to the cover 6 is turned on simultaneously. Even when the power switch should not be turned off by accident, a blade 4 will come to a halt so that it may be possible to protect against injuries resultant from contact with the blade 4 in motion.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ventilation fan that discharges oil and dust generated during cooking to the outside.

Conventional technology In general, ventilation fans in the kitchen that discharge oil and other dust generated during cooking to prevent the interior of the room from getting dirty get dirty as the oil and other dust adheres to the inside of the unit, so they need to be cleaned frequently. be. In order to save this cleaning effort, the conventional ventilation fan of this type has a support arm 33 in a frame 32 that is inserted into an opening in a kitchen wall 31 and installed, as shown in FIGS. 3 and 4. to horizontally support the motor 34.
A cover 36 having a fan guide section is provided at the intake side opening of the frame 32, and a filter 37 is attached to the front surface of this force/\-36.
A filter frame 38 having a filter frame 38 is detachably provided, and the filter frame 38 is removed to remove oil dust collected on the filter 37 for cleaning or to replace the filter frame 38.

Problems to be Solved by the Invention In such a conventional ventilation fan configuration, the filter 37 collects oil dust, etc., so if it is left as is, it will become clogged, reducing the air volume and increasing the noise, so it must be removed regularly. It is necessary to clean or replace the file 37 from time to time, and at this time remove the filter 38 from the cover 36. However, if you forget to turn off the power and the blade 35 is rotating, your finger may touch the blade 3.
5, and I was injured when I came into contact with it.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a ventilation fan that can reliably prevent fingers from coming into contact with rotating blades and causing injury.

Means for Solving the Problems In order to achieve the above object, the ventilation fan of the present invention is configured to include a switch for operating the ventilation fan, which is closed only when the filter frame is attached to the cover. be.

Function: Due to the above-described configuration of the ventilation fan of the present invention, when cleaning or replacing the filter that has collected oil dust, etc., the filter frame is removed from the cover, but at the same time, the switch provided on the cover is opened, so that in case the power supply Even if you forget to cut the blade, the blade will automatically stop.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 1 denotes a frame body that is inserted and installed into an opening in a wall of the kitchen, and houses a motor 3 supported horizontally by a support arm 2, a blade 4 fixed to this motor 3, and an opening on the exhaust side. A shutter 5 is provided to be openable and closable, and a cover 6 having a fan guide portion is provided at the intake side opening. Further, a filter frame 8 having a filter 7 is detachably provided on the front surface of the cover 6. The filter frame 8 is attached to the cover 6, and the motor 3 is in an open state only when the filter frame 8 is attached to the cover 6.
A switch 9 for operation is provided. In the above configuration, the filter 7 collects oil dust, etc., so if it is left as it is, it will become clogged, reducing the air volume and increasing the noise. Therefore, the filter 7 should be cleaned or replaced periodically. , when removing the filter 8 from the cover 6,
At the same time, the switch 9 provided on the cover 6 is opened, and the drive of the motor 3 is stopped. Even if you forget to turn off the power switch, the blade 4 will automatically stop and the blade 4 will come into contact with the rotating blade 4. This will ensure that injuries are prevented.

Effects of the Invention As is clear from the above embodiments, according to the present invention, since the switch for operating the ventilation fan is closed only when the filter frame is attached to the cover, the filter frame is not covered. Even if you forget to turn off the power switch when flushing, the blades will automatically stop, and it is possible to provide a ventilation fan that can reliably prevent fingers from coming into contact with the rotating blades and being injured.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a ventilation fan according to an embodiment of the present invention;
The figure is a wiring diagram of the ventilation fan, Figure 3 is a sectional view of a conventional ventilation fan, and Figure 4 is a wiring diagram of the same ventilation fan. , 4...
...Blade, 5...Shutter, 6...
Cover, 7...filter, 8...filter frame, 9...switch.

Claims (1)

[Claims] A frame body having a motor and blades inside and attached to an opening in a wall surface, a shutter provided at an exhaust side opening of the frame body, and a fan guide section provided at an intake side opening of the frame body. and a filter frame having a filter detachably provided on the front surface of the cover, the ventilation fan having a switch for driving the motor that is in a closed state only when the filter frame is attached to the cover. .