JPH0112557Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is an electric fan that is provided with a switching element that is interposed in the current conduction path of a fan motor and that is turned on when receiving a trigger signal, and a light emitting element that is turned on in response to the turning on of this switching element. In particular, it relates to a fan operating device that periodically changes the amount of air blown according to the operation of a selection switch to obtain a pseudo natural wind. To provide an electric fan operating device which can give prompt and accurate notification.

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

In the figure, reference numeral 1 denotes a fan motor consisting of a capacitor motor, and its high-speed rotation terminal H, medium-speed rotation terminal M, and low-speed rotation terminal L are connected to one terminal of an AC power source 5 via triaxes 2, 3, and 4, which are switching elements, respectively. 5a, and the common terminal C is connected to the other terminal 5b of the AC power source 5. 6 to 9 are switches for "strong wind" operation, "weak wind" operation switch, "light breeze" operation switch, and stop switch, respectively, which are arranged on the operation panel (not shown) of the electric fan.
These output high level signals to the corresponding signal lines L ₁ to L ₄ only when turned on, and output low level signals to the signal lines L ₁ to L ₄ in other states. 10 is each of the above operation switches 6 to 9.
This state switching circuit 10 is a signal generating circuit that receives an output signal from an input terminal a.
When a high-level signal is received, a low-level trigger signal _S1 is output only from the output terminal e corresponding to the input terminal a, and the other output terminals f, g, h
outputs a high-level signal, and similarly, when input terminals b, c, and d each receive a high-level signal, the output terminals corresponding to the input terminal that received the high-level signal among output terminals f, g, and h Low-level trigger signals S ₂ , S ₃ , and S ₄ are output only from the terminals, and high-level signals are output from the other output terminals. Note that the output terminals e, f,
Trigger signal from two or more of g and h at the same time
The configuration is such that S ₁ to S ₄ are not output. 11
is a first synchronization circuit which is a first synchronization means, and will be described below. That is, in this first synchronous circuit 11, resistors 12, 13, 14 are connected between each output terminal e, f, g of the state switching circuit 10 and each gate of the triac 2, 3, 4, respectively.
16, 17, which has its control terminals 12a, 13a,
The transmission signal is allowed to pass only when a high level signal is input to 14a. Further, 18 is a first oscillation circuit which is a first oscillation means that outputs a high level signal and a low level signal alternately every few seconds to tens of seconds, and its output terminal is connected to the transfer gate 1.
9. Control terminals 12a, 1 of the transfer gates 12, 13, 14 through the OR circuit 20 in order.
3a and 14a, respectively. A resistor 2 is connected between each output terminal of the transfer gates 12a, 13a, 14a and the terminal 5a of the AC power supply 5.
1, 22, and 23 are interposed.

On the other hand, 24, 25, and 26 are light emitting diodes that are light emitting elements for displaying the operating status of the fan motor 1, and these have the trigger signal on each cathode side.
When S ₁ , S ₂ , and S ₃ (low-level signals) are applied, the lamps are energized by the AC power source 5 and turned on. Between "(switching element)" and "11" written on page 11, line 14, 5 is an AC power supply, 10 is a state switching circuit (signal generation circuit), and 27 is the light emitting diode 24, 25. , 26, which is a second synchronization means, and will be described below. That is, in this second synchronous circuit 27, 28, 29, 3
0 indicates each output terminal e, f,
A resistor 3 is connected between the terminal 5a of the AC power supply 5 and the
1, 32, 33 and light emitting diodes 24, 25,
26 and a transfer gate connected as shown in the figure. Further, 34 is a second oscillation circuit which is a second oscillation means that outputs a high level signal and a low level signal alternately every second, for example, and its output terminal is transferred through a transfer gate 35 and an OR circuit 36 in order. It is connected to each control terminal 28a, 29a, 30a of agate 28, 29, 30, respectively. And transfer gate 28, 29,
Resistors 37, 38, and 39 are interposed between each output terminal of AC power supply 30 and terminal 5a of AC power supply 5, respectively.

40 is a selection switch disposed on the operation panel (not shown); 41 is a monostable multivibrator that outputs a high-level signal for a predetermined period of time when the selection switch 40 is turned on; The output of the JK flip-flop 42 is input to the clock terminal CK. A high-level signal is input from a terminal 43 to both the J and K input terminals of the J-K flip-flop 42, and therefore, a high-level signal is input to the clock terminal CK of the J-K flip-flop 42. The outputs from the Q output terminal and the output terminal are inverted every time the signal is input. The output terminal Q is connected to control terminals 19a and 35a of the transfer gates 19 and 35, respectively, and the output terminals are connected to input terminals of OR circuits 20 and 36, respectively.

Next, the operation of the above configuration will be explained. Now, in the normal state when the selection switch 40 is not turned on, J
It is assumed that a low level signal is output from the Q output terminal of the -K flip-flop 42 and a high level signal is output from the output terminal. In such a case, the high level signal from the output terminal is
Transfer gate 1 via circuits 20 and 36
Each control terminal 12a, 13a, 14a, 28a, 29a, 30 of 2, 13, 14, 28, 29, 30
a, so the transfer gate 1
2, 13, 14, 28, 29, and 30 are in a state where transmission signals are allowed to pass through. In this state,
For example, when the "strong wind" operation switch 6 is turned on, the trigger signal _S1 is output from the output terminal e of the state switching circuit 10. Then, the triax ₂ which receives the trigger signal S1 via the transfer gate 12 is turned on, and the fan motor 1 is connected to the high speed rotation terminal H.
is energized and rotates at high speed, thereby performing "strong wind" operation. At the same time, the light emitting diode 24 which receives the low level trigger signal _S1 via the transfer gate 28 lights up continuously, and "strong wind" operation is performed. Display that it is being carried out. Furthermore, when the "low wind" operation switch 7 or the "light wind" operation switch 8 is turned on, the fan motor 1 is similarly energized from the medium speed rotation terminal M or the low speed rotation terminal L. In this way, "light wind" operation or "light wind" operation is performed, and the light emitting diode 25 lights up during "light wind" driving, and the light emitting diode 26 lights up during "light wind" driving. When the stop switch 9 is turned on during such air blowing operation, the trigger signal _S4 is output only from the output terminal h of the state switching circuit 10, but the terminal h is open. Therefore, triaxes 2, 3, and 4 are all turned off, and the fan motor 1 is cut off.

For example, when the selection switch 40 is turned on during the above-mentioned "strong wind" operation, the monostable multivibrator 41 is driven and a high level signal is input to the clock terminal CK of the J-K flip-flop 42. A high level signal is output from the Q output terminal and applied to control terminals 19a and 35a of transfer gates 19 and 35, respectively. Then, a high level signal and a low level signal that are alternately outputted from the first oscillation circuit 18 every few seconds to tens of seconds pass through the transfer gate 19 and are sent to the control terminal 12a of the transfer gate 12.
As a result, the transfer gate 12 periodically exhibits a weakened state, and as a result, the current to the fan motor 1 becomes intermittent, and the amount of air blown changes periodically. Wind that is closer to natural wind (pseudo-natural wind) is now generated. Also, at the same time, the second
A high level signal and a low level signal which are alternately outputted every second from the oscillation circuit 34 of the transfer gate 35 pass through the transfer gate 35 and are applied to the control terminal 28a of the transfer gate 28. As a result, the light emitting diode 24 starts blinking every second, indicating that the selection switch 40 has been effectively turned on. Then, when the selection switch 40 is turned on again, the Q,
The outputs from both Q output terminals are reversed and the normal operating state is restored. Further, when the selection switch 40 is operated during "light wind" operation and "light wind" operation, the same operation as described above is performed.

By the way, when turning on the selection switch 40 during continuous air blowing operation to switch to intermittent air blowing operation as described above, since the cycle of the intermittent air blowing operation is relatively long, from several seconds to more than ten seconds, when the selection switch 40 is turned on, The rotation of the fan motor 1 is not immediately stopped. For this reason, when the selection switch 40 is turned on, it is desirable to display whether or not the operation was performed effectively.

However, in the present embodiment described above, when the selection switch 40 is turned on, the light emitting diode 2 is used to display that the continuous air blowing operation is being performed.
4, 25, 26 are made to blink, and
Since the blinking period is configured to be faster than the intermittent period of the fan motor 1, it is possible to quickly and accurately notify whether or not the selection switch 40 has been operated effectively. Moreover, such notification is provided by a light emitting diode 2 for displaying the type of ventilation operation such as "strong wind".
4, 25, and 26, the structure does not become complicated.

Note that in the above embodiment, the first oscillation circuit 18
may be configured to frequency-divide the output of the second oscillation circuit 34. Further, although the configuration is such that one selection switch 40 controls switching from continuous ventilation operation to intermittent ventilation operation and vice versa, a configuration may be adopted in which dedicated selection switches are provided for each switching control.

In addition, the present invention is not limited to the above embodiments, and may be implemented with appropriate modifications without departing from the gist, such as using a relay as a switching element, or using a neon lamp or an incandescent lamp as a light emitting element. can do.

As explained above, according to the present invention, in an electric fan operating device that periodically changes the airflow amount according to the operation of a selection switch to obtain a pseudo natural wind, when the selection switch is operated, the a first synchronizing means for periodically cutting off a trigger signal transmission path for a switching element interposed in a current-carrying path of the fan motor in synchronization with the output frequency of the first oscillating means, and the selection switch; a second synchronizing means for blinking a light emitting element for indicating a continuous energization state and an intermittent energization state of the switching element at a period synchronized with the output frequency of the second oscillation means; Since the output frequency of the first oscillation means is set to be higher than that of the first oscillation means, it is possible to achieve the excellent effect of quickly and accurately notifying that the selection switch has been operated with a simple structure. .

[Brief explanation of the drawing]

The drawing is an electrical configuration diagram showing an embodiment of the present invention. In the figure, 1 is a fan motor, 2, 3, and 4 are triaxes (switching elements), 11 is a first synchronization circuit (first synchronization means), 18 is a first oscillation circuit (first oscillation means), 24, 25, and 26 are light emitting diodes (light emitting elements); 27 is a second synchronization circuit (second synchronization means); 34 is a second oscillation circuit (second oscillation means); and 40 is a selection switch.

Claims (1)

[Scope of utility model registration request] The device is configured to periodically change the air flow rate by intermittent energization of the fan motor when the selection switch is operated, thereby obtaining a pseudo natural wind, and includes a signal generation circuit that generates a trigger signal. , a switching element that is interposed in the current-carrying path of the fan motor and is turned on when receiving the trigger signal; and a light-emitting element for displaying the operating status that is energized by the power source and lights up when the trigger signal is applied. In the electric fan operating device, the trigger signal transmission path between the signal generation circuit and the switching element is periodically cut off in synchronization with the output frequency of the first oscillation means when the selection switch is operated. a second synchronizing means for periodically cutting off the trigger signal transmission path between the signal generating circuit and the light emitting element at a period synchronized with the output frequency of the second oscillating means when the selection switch is operated; synchronization means, and the output frequency of the second oscillation means is set higher than that of the first oscillation means.