JPH0620037Y2 - Interlocking device for cooking equipment and ventilation fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an interlocking device for a heating cooking device and a ventilation fan that operates a ventilation fan in conjunction with the operation of the heating cooking device.

(Prior Art) Conventionally, in a kitchen, a ventilation fan is arranged above a heating cooker such as a gas stove or an electric cooker, and hot air, smoke, odor, etc. generated during heating and cooking are exhausted to the outside by a ventilation fan. ing.

The conventional ventilation fan is generally one in which an operation switch is turned on separately from the operation of the heating / cooking device to operate and ventilate when necessary, and the ventilation fan is operated in conjunction with the operation of the heating / cooking device. There is no known.

(Problems to be solved by the invention) This invention makes the ventilation fan operate in conjunction with the operation of the heating / cooking equipment, and separates the ventilation fan from the heating / cooking equipment as needed to operate independently. To do.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the present invention are
A ventilation fan (6) is installed above the cooking device (3) to
(6) is a fan (13) and its driving means (12) and control means (1
1), the control means (11) includes at least control switches (7) and (9) for starting and stopping the operation,
An instrument plug switch (14) is provided in conjunction with the operation lever of (3), and the normally closed contact (b) of the instrument plug switch (14) is connected to the first resistance.
Connected to the power supply (V _cc ) via (R ₁ ), the normally open contact (a) connected to the base of the transistor (TR) via the third resistor (R ₃ ), and the common contact (c) connected to the capacitor (C) is grounded, and the collector of the transistor (TR) is connected to the second resistor (R).
₂ ) is connected to the power supply and the emitter is connected to the ground via the intermediate point between the normally closed contact (b) and the first resistor (R ₁ ).
The signal extracted from (B) is used as a ventilation fan stop signal, and the signal extracted from the intermediate point (A) between the collector of the transistor (TR) and the second resistor is used as a ventilation fan start signal. The feature is that the input is made in 11).

(Function) The contact of the appliance plug switch is switched in conjunction with the operating lever of the heating and cooking equipment, the voltage displacement waveform generated at the time of switching of this contact is taken out as a control signal, and input to the control means of the ventilation fan to operate the ventilation fan. Control.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. With reference to FIG. 1, (1) is a sink installed in a kitchen, and cooking equipment (2), for example, a gas stove (3) is provided on a cooking surface (2). The gas stove (3) is
A control knob (4) for ignition is provided.

Reference numeral (5) is a hanging door rack arranged above the sink (1), and a range hood (6), which is a ventilation fan, is arranged on one side so as to be aligned above the gas stove (3). Range food
In (6), the lower surface is opened, the fan and its drive motor are installed inside, and it is connected to the outside by a duct, and sucks hot air, smoke, odor, etc. rising from the gas stove (3). Can be discharged outdoors.

As shown in FIG. 2, the range hood (6) has high, low and off switches (7), (8) and (9) and a lamp switch (10) for blinking an illumination lamp. A closing signal is input to the control means (11) to control the operation of the motor (12) and the lighting equipment to rotate the fan (13), and such an operation control mechanism is conventionally known.

The present invention is characterized in that an interlocking mechanism for operating or stopping the fan is incorporated in the operation control mechanism in association with an operation lever for controlling ignition or extinguishing of the gas stove (3).

Referring to FIG. 3, reference numeral (14) denotes an instrument plug switch that is opened and closed in conjunction with the operation lever of the gas stove (3), and the normally closed contact (b) is through the first resistor (R ₁ ). DC power supply (Vcc)
The common contact (c) is connected to the ground (E) via the capacitor (C). Normally open contact (a) has a third resistance (R
₃ ) via an NPN transistor (T
R) is connected to the base. The collector of the transistor (TR) is connected to the DC power supply (Vcc) via the second resistor (R ₂ ),
The emitters are each connected to earth (E). And
An intermediate point (B) between the normally closed contact (b) and the first resistance (R ₁ ) is connected between the off switch (9) and the control means (11) of the control circuit shown in FIG. The signal for stopping the range hood extracted from is input. Further, the midpoint (A) between the collector of the transistor (TR) and the second resistor (R ₂ ) is connected between the strong switch (7) and the control means (11), and the range hood taken out from the point A An operating signal is input.

FIG. 3 shows a state in which the cooking device (3) and the ventilation fan (6) have stopped operating. At this time, the capacitor (C) connected to the c contact is in the charging completed state and the DC power source (Vcc).
It is at the same potential as.

When the operation knob (4) is operated to ignite the heating and cooking device (3), the instrument plug switch (14) switches from the b contact to the a contact in conjunction with this. By switching the instrument plug switch (14), the electric charge of the capacitor (C) changes from the a contact to the third resistance.
It flows through (R ₃ ) to the base side of the transistor (TR),
Turn on the transistor (TR). Transistor
When (TR) is turned on, since the emitter is connected to the ground (E), the potential at the point A drops from the potential of the DC power source (Vcc) to almost zero potential. The capacitor (C) gradually loses electric charge due to discharge, the current flowing through the base of the transistor (TR) also gradually decreases, and finally becomes zero. Thus, the transistor (TR) gradually turns off from the on state.
It becomes a state. As shown in FIG. 4, the displacement of the potential at the point A drops after the instrument plug switch is turned on (t ₁ ), then gradually returns and finally returns to the power supply potential. Therefore, such A
The waveform of the point is taken out and input to the control means (11) as a signal for operating the range hood to start the range hood.

The above state is maintained during the operation of the heating and cooking equipment (3) and the ventilation fan (6), and the potential at the point A is a DC power
It is kept the same as (Vcc).

When the heating and cooking equipment (3) is extinguished, the appliance plug switch (14) is switched to move from the a contact to the b contact, so that the charging current flows through the capacitor (C) through the first resistor (R ₁ ). , The potential at point B temporarily drops to zero potential, and the capacitor
As the charging of (C) is completed, the charging current decreases, and the potential at the point B also returns and approaches the power supply voltage. The displacement of the potential at the point B is as shown in FIG. 6, and this waveform is input to the control means (11) as an operation stop signal of the ventilation fan to stop the ventilation fan.

The above is the ventilation fan (6) linked to the operation of the cooking device (3).
However, it is also possible to independently control only the ventilation fan (6). In this case, the second
In the figure, if each control switch (7) to (9) is turned on,
The connection and disconnection is input to the control means (11) as a control signal, and only the ventilation fan (6) can be independently controlled.

FIG. 7 shows the circuit configuration when a plurality of heating / cooking equipments (3) are provided and a plurality of utensil plug switches (14) are provided correspondingly, and the a contacts of each switch are connected in parallel. , The c contact of the first stage switch is not changed, the b contact is sequentially connected to the c contact of the next stage, and the first resistor (R
₁ ) is connected from the DC power supply (Vcc), and the connection point is taken as the point B to take out the stop signal. Other points are
The circuit configuration is the same as that shown in FIG.

As a result, it is possible to increase the number of switches to an arbitrary number by connecting each switch without changing the basic circuit.

(Effect of the device) According to the interlocking device of the cooking device and the ventilation fan of the present invention,
Ventilation fan can be started or stopped in conjunction with ignition or extinguishing of cooking equipment, and ventilation can be performed according to cooking, which is extremely convenient in use, and odor, hot air, smoke, etc. In addition to eliminating muddyness, the ventilation fan can be operated and controlled independently, so that only ventilation is possible if necessary, and a very useful interlocking device can be provided in practical use.

[Brief description of drawings]

1 is an external perspective view, FIG. 2 is a block diagram showing control means, FIG. 3 is a circuit diagram of an interlocking device, FIGS. 4 to 6 are voltage waveform diagrams at points A and B, and FIG. 7 is a modification. It is a circuit diagram showing. (1) …… Sink, (2) …… Cooking surface (3) …… Gas stove, (4) …… Operation knob (5) …… Suspended cabinet, (6) …… Range hood (7) …… Strong switch , (8) ...... Weak switch (9) ...... Off switch, (10) ...... Lamp switch (11) ...... Control means, (12) ...... Motor (13) ...... Fan, (14) ...... Appliance Plug switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koto Fumi, 2-3-2 Higashi Zao, Nagaoka City, Niigata Japan Seiki Co., Ltd. (56) References JP 62-200121 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A ventilation fan (6) is arranged above a heating and cooking device (3), and the ventilation fan (6) includes a fan (13), a driving means (12) and a control means (11), and a control means. Reference numeral (11) includes at least control switches (7) and (9) for starting and stopping the operation, and an instrument plug switch (14) provided in association with the operation lever of the heating and cooking device (3). Connect the normally closed contact (b) of (14) to the power supply (V _cc ) through the first resistor (R ₁ ) to make the normally open contact.
(a) is connected to the base of the transistor (TR) via the third resistor (R ₃ ), the common contact (c) is grounded via the capacitor (C), and the collector of the transistor (TR) is connected to the second Connect the power supply via the resistor (R ₂ ) and the emitter to the ground respectively, and use the signal extracted from the intermediate point (B) between the normally closed contact (b) and the first resistor (R ₁ ) to stop the ventilation fan operation. A signal, and a signal taken out from the intermediate point (A) between the collector of the transistor (TR) and the second resistor, are input to the control means (11) as a signal for starting the ventilation fan operation, respectively. Interlocking device for heating and cooking equipment and ventilation fan.