JPS622648Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an interlocking operation device for a ventilation fan that can easily interlock a fan motor and a door opening/closing electric device that are configured without considering interlocking.

Although the present invention is not limited to an arrangement in which a ventilation fan is linked with a fire damper, for convenience of explanation, this will be described as an example.

In general, in communal houses such as concrete apartments, the ventilation fan installed in each kitchen room, such as the exhaust outlet of a range hood, is connected to a shared central duct through a branch duct dedicated to each house, and a door such as a fire prevention door is installed in the branch duct. Many have a structure in which a damper is provided and this is opened and closed by a motor for opening and closing the damper. However, the range hood is not designed to be able to be used in conjunction with a fire damper so that it can be used alone in a single house. This is because if the range hood is constructed with such considerations in mind, it will be a heavy burden for those who use the range hood alone in a single house. For this reason, when using a range hood and a fire damper in conjunction with each other in a communal house, conventionally a wall switch was added and the range hood fan motor and damper opening/closing motor were connected in parallel to the power line via this wall switch. The fan motor and the damper opening/closing motor are connected to the same wall switch and are connected to each other, so that the fan motor and the damper opening/closing motor are simultaneously energized and disconnected for so-called linked operation.
This method has the advantage that the range hood can be of an inexpensive construction without considering the interlocking with the fire damper, but has the disadvantage that it requires additional work to install a wall switch and is expensive. Furthermore, since range hoods that are configured to be used alone are generally equipped with a control switch that turns off the power to the fan motor, the above method prevents the control switch from being accidentally turned off. Even though the fan motor was cut off due to the operation, the fire damper remained open and there was a risk that smoke from the kitchen next door could flow back into your room, resulting in incomplete interlocking. There were some drawbacks.

The present invention was developed to eliminate the above-mentioned drawbacks, and its purpose is to link a fan motor with a door opening/closing electric device such as a damper or shutter, so that it can be used alone. To provide an interlocking operation device for a ventilation fan that can be operated without making any changes to the ventilation fan, can be expected to be completely interlocked, can be achieved without adding a wall switch, and is economically advantageous. .

The following describes each embodiment of the present invention. In the first embodiment shown in Figs. 1 and 2,
The figure shows an example of a shared house, with 1 and 2 being kitchen rooms, 3 a central duct for shared use, 4 a ventilation fan, e.g. a range hood, located above a gas range 5 in each of the kitchen rooms 1 and 2, and each of these exhaust ducts 6 being connected to a branch duct 7 which branches off from the central duct 3 for its own exclusive use. Inside each branch duct 7 is disposed a door, e.g. a fire damper 8, for opening and closing the ventilation passage. Next, the electrical configuration will be explained with reference to Fig. 2. 9 is a power source, 10 and 11 are power lines wired indoors which receive power from the power source 9. 12 is a fire damper unit separate from the range hood 4, and 13 is the fire damper unit 12.
An input control unit that controls the input of the detection unit 1
4 and the control unit 15.
In the figure, 16 is a fan motor for driving a fan, which is composed of a main winding 16a, an auxiliary winding 16b and a capacitor 16c, and receives power from terminals _t1 and _t2 via a fan switch, i.e., a control switch 17 having a high-speed operation switch 17a and a low-speed operation switch 17b, and is controlled to be turned on or off by opening or closing the switch. One of the power lines 10 is connected to the terminal _t1 , and the other power line 11 is connected to the terminal _t2 via a terminal _t3 and a reactor 18. In the fire damper unit 12, 19 is a door opening/closing electric device for opening and closing the fire damper 8, such as a damper opening/closing motor, and 20 is a locking solenoid for locking the fire damper 8 in an open or closed position, which are connected in parallel between terminals _t4 and _t5 , and the terminal _t4 is connected to the power line 10, and the terminal _t5 is connected to the terminal _t3 via a switching element, such as a thyristor 21. A rectifier circuit 24 consisting of a diode 22 and a capacitor 23 is connected across the reactor 18, and the thyristor 21 receives the terminal voltage of the reactor 18, i.e., the output voltage from the rectifier circuit 24, as a gate signal through a Zener diode 25.
is a resistor for protecting the thyristor 21.

Next, the operation of the above configuration will be explained. That is, when the control switch 17 provided on the range hood 4 is turned on, for example, the high-speed operation switch 17a, in order to operate the range hood 4, the fan motor 16 is turned on by the voltage between the power lines 10 and 11.
is connected in series and the operation is started. Then, the fan motors 16 are connected to both ends of the reactor 18.
A voltage that does not interfere with the operation of the thyristor 21 is induced, and this voltage is rectified by the rectifier circuit 24 and then applied to the gate of the thyristor 21 via the Zener diode 25 to turn it on. Then, the damper opening/closing motor 19 and the locking solenoid 20 of the fire prevention damper unit 12 are energized by the current passing through the thyristor 21, thereby opening the fire prevention damper 8 at the same time as the fan motor 16 is driven. In such an exhaust operation, if the currently closed high-speed operation switch 17a is turned off, not only the fan motor 16 will be cut off, but the voltage across the reactor 18 will also disappear. Damper opening/closing motor 19
Since the locking solenoid 20 is de-energized, the fire damper 8 is closed.

In this way, the operation and stopping of the range hood 4 and the opening and closing of the fire damper 8 can be completely linked by operating the control switch 17 provided on the range hood 4, so there is no need to install a wall switch as in the past, and the construction work It is economically advantageous because it is not necessary. Also, an outlet or a fire damper unit 1 for connecting the fire damper unit 12 to a range hood 4 configured to be used alone may be used.
The above-mentioned complete interlock can be achieved without installing parts such as a switch that controls power cut-off in the range hood 4 that are used only when interlocked with the fire damper 8, so the range hood 4 can be used alone or in conjunction. There is no need to produce two different types, which is economically advantageous, and the same control switch 17 can be used.
Because of the complete interlocking, there is no problem of forgetting to close the fire damper 8.

In the above, the input control unit 13 is required instead of adding a wall switch, but still, as in the past, range hoods are produced in two types, single use type and interlocking use type, and the wall switch expansion work is required. It is significantly cheaper than those that require

Next, a second embodiment of the present invention will be explained with reference to FIG. 3, in which the same parts as in FIG. 2 are denoted by the same reference numerals. The primary winding 27a is connected in series with the fan motor 16, a relay 28 as the control unit 15 is connected between the secondary winding 27b, and the relay contact 28a is connected to the damper opening/closing motor 1.
9 is connected in series. Even in such a configuration, when the fan motor 16 is energized by turning on the control switch 17, the transformer is simultaneously excited and its secondary output activates the relay 2.
8 is driven, the damper opening/closing motor 19 and the locking solenoid 20 are also energized by the relay 28a. Therefore, complete interlocking by the control switch 17 provided on the range hood 4 can be expected as described above.

Next, Fig. 2 and 3 for the third embodiment of the present invention.
This will be explained with reference to FIG. 4, in which the same parts as in the figure are given the same reference numerals. In this embodiment, the voltage between the terminals of the reactor 18 in the first embodiment is
Relay 28 similar to the second embodiment received via 4
is provided, and the input to the fire damper unit 12 is controlled by the relay contact 28a, and the same effect as described above can be obtained.

As described above, the present invention allows the fan motor of a ventilation fan to be linked with a door opening/closing electric device such as a fire damper, without making any changes to a ventilation fan configured to be used alone. It is possible to provide an interlocking operation device for ventilation fans that can be operated efficiently and completely interlocked without forgetting to close a door, etc., and that can achieve this without installing additional wall switches and is economically advantageous. .

[Brief explanation of the drawing]

1 and 2 are a longitudinal cross-sectional view and a wiring diagram of a control circuit, respectively, showing an example of a communal house in the first embodiment of the present invention, and FIGS. 3 and 4 show the second and third embodiments, respectively. FIG. 3 is a wiring diagram of the control circuit shown in FIG. In the figure, 4 is the range hood (ventilation fan), 8 is the fire damper (door), 12 is the fire damper unit, and 13 is the fire damper unit.
14 is an input control unit, 14 is a detection unit, 15 is a control unit, 16 is a fan motor, 17 is a control switch (switch for the fan), 18 is a reactor, 19 is a damper opening/closing motor (door opening/closing electric device), 21
is a thyristor (switching element), 27 is a transformer, and 28 is a relay.

Claims (1)

[Claims for Utility Model Registration] 1. A ventilation fan consisting of a fan motor and a fan switch that turns off electricity to the fan motor; an electric device for opening and closing a door that is formed separately from the ventilation fan and opens and closes a ventilation passage; A ventilation fan interlocking operation device comprising a detection section that detects the operation of the ventilation fan by its load current, and a control section that operates the door opening/closing electric device in response to the output of the detection section. 2. Interlocked operation of a ventilation fan according to claim 1, wherein the detection section is a reactor connected in series with the ventilation fan, and the control section is a switching element that responds to the terminal voltage of the reactor. Device.