JPS59202343A - Interlocking device for ventilating fan - Google Patents

Abstract

PURPOSE:To obviate the problems of danger of inflammation and useful life of contacts, simplify wiring for a power source receptacle, a ventilating fan and an interlocking device for the fan and enhance economy, by controlling the ventilating fan in a contactless manner by a bidirectional three-terminal thyristor. CONSTITUTION:A signal circuit D is constituted of a receptacle plug 3 cnstituted of three terminals by using a terminal 5A in common for an input power source plug 4 and an outlet-side receptacle 5, a transformer 6 having a primary coil 6A connected in parallel with the plug 4, and a switch 7 connected to one secondary coil 6B of the transformer 6 and interlocked with a gas apparatus 8. An output circuit E is constituted of the bidirectional three-terminal thyristor 11 connected to the other secondary coil 6C of the transformer 6, anti-parallel diodes 12 for detecting an electric current, and a non-contact terminal 5C of the plug 4 of the receptacle 5. Accordingly, wiring from the interlocking device for the ventilating fan 2 to the power source receptacle is unnecessitated, thereby enhancing economy, safety is enhanced by the use of the thyristor 11, and the useful life is prolonged.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ventilation fan interlocking device in which a ventilation fan is used in conjunction with a gas appliance in a place such as a kitchen where gas appliances are used.

Conventional configurations and their problems In recent years, ventilation fan interlocking devices, which are used in conjunction with ventilation fans with other equipment, have been used more and more as the demand for ventilation fans in homes has increased, and their durability and safety have become important. has been done.

The conventional ventilation fan interlocking device as described above will be described below with reference to the drawings.

FIG. 1 shows the circuit configuration of a conventional ventilation fan interlocking device. In FIG. 1, 100 is a power plug, 101 is a power transformer, and the primary coil is connected to the power source side. 1
02 is an interlocking switch with gas appliances, which is connected to the secondary coil of the power transformer 101 and constitutes a signal circuit A. 103 is a relay switch, and one end is connected to the power plug 10
0 and is interlocked with the secondary coil of the power transformer 101. The buzzer 104 is connected to a thyristor 108 whose gate is connected to the collector of a transistor 107 which has an anti-parallel diode 106 for current detection connected between the pace emitters through a resistor 106, and the diode 109 is a rectifier diode connected to a resistor 110. The buzzer circuit B is connected to the collector of the through transistor 107.
The other terminal of the relay switch 103 and one terminal of the output outlet 111 are connected to each other.

The plug plug 112 is connected to the ventilation fan 113, and the other terminal of the output outlet 111 is connected to the other terminal of the power plug 100 via the anti-parallel diode 106 for current detection of the buzzer circuit B, and the output circuit C. It consists of

The operation of the ventilation fan interlocking device configured as above will be described below.

First, as shown in FIG. 2, the plug 112 is inserted into the output outlet 111 of the ventilation fan interlocking device 114, and the power plug 100 is inserted into the power outlet 116. Next, when the gas appliance 116 is used in FIG. 1, the gas appliance interlocking switch 102 is turned on and the signal circuit A becomes a closed circuit. As a result, the secondary coil of the transformer 101 is interlocked and the lace insert 103 enters, causing current to flow through the output circuit C and operating the ventilation fan 113. In this case, since current flows through the current detection anti-parallel diode 106, the buzzer circuit B does not operate and the buzzer 104 does not sound.

However, the plug 112 was disconnected, and the ventilation fan 1
13 is broken and does not rotate, no current flows through the operation circuit C, so the current detection reverse panel diode 106 cannot detect the stain current, and the buzzer circuit B is activated and the buzzer 104 is activated.
sounds.

However, in the above configuration, as shown in FIG. 2, wiring is required from the ventilation fan interlocking device 114 to the ventilation fan 113 and the power outlet 116, respectively, and a large amount of wiring cords are used. Wiring work was time-consuming and the wiring on the walls was unsightly. Also, relay switch 103
Since it is a contact point, it has disadvantages such as poor contact and the risk of ignition due to contact arc when gas leaks.

OBJECTS OF THE INVENTION In view of the above drawbacks, the present invention provides a ventilation fan interlocking device that is economical, safe, and long-lasting.

Structure of the Invention In order to achieve this object, the ventilation fan interlocking device of the present invention has the following features:
An outlet plug consisting of three terminals, with the input power plug and the output outlet in common, and a transformer in which the primary coil is connected in parallel to the above power plug, and one of the secondary coils of this is connected. A signal circuit consisting of a switch linked to the gas equipment, a bidirectional three-terminal thyristor connected through a resistor from the output terminal of the bridge connected to the other secondary coil of the above transformer, an anti-parallel diode for current detection, and the output side. It consists of an output circuit consisting of the unconnected terminal of the power plug of the outlet.

This configuration eliminates the need for wiring from the ventilation fan interlocking device to the power outlet, making the wiring work hassle-free, saving wiring cords and time, and is highly economical. Furthermore, safety and longevity can be achieved by using a bidirectional three-terminal thyristor, which is less flammable due to contact arc than a contact relay switch and has an extremely long life.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows a circuit diagram of a ventilation fan interlocking device in an embodiment of the present invention. In FIG. 3, 1 is a power plug for the ventilation fan 2, and 3 is an outlet plug, which is comprised of an input plug 4 and an output outlet 6 into which the power plug 1 is inserted. The outlet plug has a terminal 6A connected in series with one of the input power plugs 4 and one of the output outlets 6, a terminal 6B connected to the other side of the input power plug 4, and a terminal 6B connected to the other side of the input power plug 4, and one of the output outlets 6. A terminal 5C connected to the other non-connected terminal is provided. 6 is a transformer having a primary coil 6A connected in parallel to a power supply; 7 is a gas equipment interlocking switch provided in gas equipment 8; the gas equipment interlock switch 7 is connected to the secondary coil 6B of the transformer 6 to form a signal circuit. 6C is one secondary coil induced by the signal voltage of the above-mentioned signal circuit, which is connected to the gate of a bidirectional three-terminal thyristor 11 consisting of a current control element with bidirectional control via a resistor 10 through a bridge 9 consisting of a four-terminal rectifying element. connected to the bidirectional three-terminal thyristor 11
One terminal 11A is connected to the terminal 6C of the outlet plug 3 through the current detection parallel diode 12, and the other terminal 11B of the bidirectional three-terminal thyristor 11 is connected to the terminal 6B of the outlet plug 3, forming an output circuit E. There is.

A capacitor 13 and a resistor 14 connected to both ends of the bidirectional three-terminal thyristor 110 constitute a surge absorption circuit for the bidirectional three-terminal thyristor 11.

104 is a buzzer, 106 is a resistor, 107 is a transistor, 108 is a thyristor, 109ii is a diode, 110
is a resistor, and the above is the buzzer circuit B having the same configuration as that shown in FIG.

The operation of the ventilation fan interlocking device configured as above will be described below.

First, as shown in FIG. 4, the input power plug 4 of the outlet plug 3 in the ventilation fan interlocking device 16 is connected to a power source, and the power plug 1 of the ventilation fan 2 is inserted into the power outlet 16 of the outlet plug 3.

In FIG. 3, when the gas appliance 8 is used, the gas appliance interlocking switch 7 is turned on and the signal circuit becomes a closed circuit. This induces a voltage in 6C, one of the secondary coils of the lance 6, which is rectified by the bridge 9 and passes through the resistor 10, increasing the potential at the gate of the bidirectional three-terminal thyristor 11. The bidirectional three-terminal thyristor 11 becomes conductive, and current flows through the output circuit E to operate the ventilation fan 2. The operation of the buzzer circuit B is the same as that of the conventional example.

As described above, according to the present embodiment, by controlling the ventilation fan 2 without contact using the bidirectional three-terminal thyristor 11, the risk of ignition due to contact arc when the ventilation fan 2 is activated and stopped is reduced, and the risk of contact is reduced. This eliminates the problem of lifespan, and simplifies the wiring between the power outlet 16, the ventilation fan 2, and the ventilation fan interlocking device 16 as shown in Figure 4, making it possible to save on wiring cords and shorten the time required for wiring work. .

Effects of the Invention As described above, the present invention provides an outlet plug consisting of three terminals, with the input power plug, the output side, and the outlet being common terminals, and a transformer having a primary coil connected in parallel to the input power plug. A signal circuit consisting of a switch connected to one of the secondary coils and interlocked with the gas equipment,
The output circuit consists of a bidirectional three-terminal thyristor connected to the other secondary coil of the transformer, an anti-parallel diode for current detection, and an unconnected terminal of the power plug of the output outlet. Mutual wiring to power outlets is simplified, saving on wiring cords and shortening the time required for wiring work. However, by making it contactless with a bidirectional three-terminal thyristor, there is no risk of ignition due to gas leakage due to contact arc that occurs when a ventilation fan such as a contactless glue race inochi is stopped, thereby preventing personal accidents. and has excellent safety. Moreover, there is no need to worry about contact failure due to contact deterioration, and it is effective in terms of longevity, and its practical effects are significant.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of a conventional ventilation fan interlocking device, Fig. 2 is an interlocking system block diagram of the same device, Fig. 3 is an electric circuit diagram of a ventilation fan interlocking device according to an embodiment of the present invention, and Fig. 4 is an electric circuit diagram of the ventilation fan interlocking device of the present invention. FIG. 2 is a block diagram of an interlocking system of the device according to the embodiment of the invention. 3... Outlet plug, 4... Human powered power plug, 5... Output side outlet, 6...
...Transformer, 7...Gas equipment interlocking switch,
11...Bidirectional three-terminal thyristor, 12...
...Anti-parallel diode for current detection. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 4

Claims (1)

[Claims] The input power plug and the output side outlet have one terminal in common, and the outlet plug consists of three terminals, the transformer has a primary coil connected in parallel to the input power plug, and the transformer is connected to one of its secondary coils. A signal circuit consisting of a switch linked to the gas appliance, a bidirectional three-terminal thyristor connected to the other secondary coil of the above transformer, an anti-parallel diode for current detection, and the power plug of the output side converter are disconnected. A ventilation fan interlocking device consisting of an output circuit from a terminal.