JPS638377B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a range ventilation fan that is linked to a gas appliance.

Conventionally, this type of ventilation fan has been configured to be started and stopped by turning on and off a main body switch provided on the ventilation fan main body, and regardless of the use of the gas appliance. With this configuration, gas appliances are sometimes used without starting the ventilation fan with the windows closed, which creates a risk of turbid indoor air and accidents such as oxygen deficiency.

Therefore, recently, in order to prevent the above-mentioned accidents from occurring, a so-called gas appliance-linked range ventilation fan has been developed in which the range ventilation fan is activated whenever a gas appliance is used. However, with this range ventilation fan that is linked to a gas appliance, if the gas appliance is accidentally used while cleaning the fan or motor of the ventilation fan, the fan may rotate and cause injury to the hands of the person cleaning the fan.

The purpose of the present invention is to focus on the above-mentioned problems, and to provide a gas appliance-coupled stove that is capable of interlocking operation of a gas appliance and a range ventilation fan, and is safe even if the gas appliance is accidentally used during cleaning. Provide ventilation fans.

The gist of the present invention is to provide a fan, a motor that drives the fan, a main body switch that starts and stops the motor, and an interlocking device that starts the motor when a gas appliance is used, regardless of whether the main body switch is turned on or off. The motor and the main body switch are connected through a connector, and when the connector is removed, the motor is disconnected from the power supply even if the interlocking device is activated by using a gas appliance. This is found in range ventilation fans that are configured to

Hereinafter, the present invention will be explained in detail based on the drawings showing one embodiment.

In the drawing, a range ventilation fan 1 that is connected to a gas appliance includes a main body case 2 made of a steel plate, a front cover 3 made of a steel plate provided on the front of the main body case 2, a fan 4 housed within the main body case 2, A motor 5 that drives the fan 4, a grease filter 6 provided on the inflow side of the fan 4, a main body switch 7 that starts and stops the motor 5, and an interlocking system that starts the motor 5 when the gas appliance 8 is put into use. Device 9
, a connector 10 for electrically connecting the main body switch 7 to the motor 5, and a hand illumination lamp 11 for illuminating the lower part of the main body case 2.

The front cover 3 is configured to be detachable from the main case 2 by means of a locking piece 12 provided at the upper front end of the main case 2 and a knob 13 provided at the lower front end of the main case 2. There is. A suction port 14 is provided at the top of the front cover 3. A connector 10 and a hand illumination lamp 11 are provided on the back side of the front cover 3. A lighting switch 15 for turning on and off the main body switch 7 and the hand illumination lamp 11 is provided so as to be operable on the front surface side of the front cover 3.

As shown in FIG. 2, the motor 5 has a main winding 5a.
, auxiliary windings 5b and 5c, and a capacitor 5d. The main body switch 7 has a high speed setting contact 7a.
and a low speed setting contact 7b.

The connector 10 consists of an outlet 10a fixed to the front cover 3, and an insertion plug 10b detachably provided in the outlet 10b. There are three notches 16, 17, 18 on the outlet 10a.
is connected.

The interlocking device 9 includes a contact 19 that closes when the gas appliance 8 is used, a relay 20 that operates when the contact 19 closes, and contacts 20a and 20b that are opened and closed by the relay 20. The contact 20a is
When the relay 20 is activated, it closes. The contact 20b is
It opens when relay 20 is activated. The relay 20 is connected to a power source by a first plug 21 . The interlocking device 9 is incorporated into the front cover 3 or the main body case 2.

Notch 16 is connected between auxiliary windings 5b and 5c via contact 20b. The notch 17 is connected between the auxiliary winding 5c and the main winding 5a. Notch 18 is connected between auxiliary winding 5c and main winding 5a via contact 20a. Outlet 10a
By inserting the plug 10b, the notch 16 is directly connected to the high speed setting contact 7a, the notch 17 is directly connected to the low speed setting contact 7b, and the notch 18 is directly connected to the second plug 22. The second plug 22 includes the main body switch 7, the connector 10, and the motor 5.
Connect in series. The series circuit of the hand illumination lamp 11 and the illumination switch 15 is connected in parallel to the series circuit of the main body switch 7, the connector 10, and the motor 5.

In the above configuration, the first plug 21 and the second
Connect the plug 22 to the power source, and turn the main body switch 7
When the gas appliance 8 is used while the high-speed setting contact 7a and the low-speed setting contact 7b are open, the contact 19 closes and the relay 20 is activated, causing the contact 20a to close.
closes and contacts 20b open, the motor 5 rotates at high speed to prevent accidents such as lack of oxygen in the room.

To rotate the motor 5 when the gas appliance is not in use, either the high-speed setting contact 7a or the low-speed setting contact 7b of the main body switch 7 should be closed. Even if the motor 5 is rotating at a low speed, when the gas appliance 8 is used, the interlocking device 9 ensures that the motor 5 rotates at a high speed.

When you want to clean the range ventilation fan 1, insert it into the outlet 10a and pull out the plug 10b. Even if you use a gas appliance, the motor 5 will not rotate. In other words, even if the relay 20 is activated, the notches 16, 17, Since the motor 18 is disconnected from the power supply, the motor 5 is never energized. Therefore, the fan 4 does not rotate during cleaning, which is safe.

As described above, according to the present invention, it is possible to provide a range ventilation fan in which a gas appliance and a range ventilation fan can be operated in conjunction with each other, and the fan will not rotate even if the gas appliance is accidentally used during cleaning. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an external perspective view with main parts cut away, and FIG. 2 is an electric circuit diagram. 4...Fan, 5...Motor, 7...Main switch, 8...Gas appliance, 9...Interlocking device, 10...
...connector.

Claims (1)

[Claims] 1 A fan, a motor that drives this fan,
The motor is equipped with a main body switch that starts and stops the motor, and an interlocking device that starts the motor when the gas appliance is used regardless of whether the main body switch is turned on or off, and the motor and the main body switch are connected via a connector. A ventilating fan for a microwave range, characterized in that when the connector is removed, the motor is disconnected from the power supply even if the interlocking device is activated using a gas appliance.