JP2010255607A - Control device for electric fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for an electric fan which can make a user feel coolness, and is achieved in the improvement of energy saving performance. <P>SOLUTION: An electric fan includes: a support 2 arranged in an upper part of a base 1 placed on the floor surface; a base 3 provided in an upper part of the support 2; and a motor case 4 fitted to an upper part of the base 3 so as to be turnable. A fan motor 6 for driving the electric fan 5 and a swing motor 7 for driving the motor case 4 to swing right and left relative to the base 3 are included in the motor case 4. A control device for an electric fan includes: a flow rate setting means 8 for setting the number of revolutions of the fan motor 6; a fan motor control means 9 for changing the number of revolutions of the fan motor 6 to several stages based on a signal from the flow rate setting means 8; and an intermittent timer 10 for repeatedly performing the energization and the stop of the fan motor 6 per certain time. The reciprocation time of the motor case 4 which is swingingly driven by the swing motor 7 and the set time of the intermittent timer 10 are set different from each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fan control device having an air volume adjusting function.

  A conventional electric fan has a support placed on the upper part of a base, a motor case is rotatably attached to a base provided on the upper part of the support, and a blower fan is attached to a rotating shaft of a fan motor provided in the motor case. The blower fan rotates to send wind. In addition, a swing mechanism is provided in the motor case, and the motor case and the blower fan are swung to the left and right with respect to the support column so that the blow direction can be changed.

  In addition, some fans have an operation pattern called rhythm wind, which is configured so that the air volume of the blower fan is switched between strong, medium, weak and stopped with a preset pattern at a certain cycle, changing the air volume hitting the body By doing so, a cool feeling can be obtained (see Patent Document 1).

JP-A-6-129389

  When using a fan, if the wind of the blower fan continues to hit the user's body for a long time, the body temperature may decrease and the physical condition may be deteriorated. The head swings even when used alone. When swinging when a fan is used alone, the time that the wind hits the user is very small during the swing cycle, and most of the time the wind is sent to a place where no one is present. Power will be consumed.

  On the other hand, the operation pattern is set in accordance with the air volume of the rhythm-like operation pattern. When the rhythm wind is selected when the air flow of the blower fan is “strong” or “medium”, the blower fan switches to “weak” or “stop”, so that the product image with excellent energy saving performance can be reduced. However, if the rhythm wind is selected when the air flow of the blower fan is “low”, it switches to “strong” or “medium” air flow, so the power consumption is higher than when “low” continuous operation is selected. Would end up increasing.

  The present invention solves the above-described problems, and is provided with a support column 2 disposed on an upper portion of a base 1 placed on a floor, a base portion 3 provided on the upper portion of the support column 2, and a rotatable upper portion of the base portion 3. A motor case 4 that is attached, a fan motor 6 that drives the blower fan 5 in the motor case 4, and a swing motor 7 that swings the motor case 4 left and right relative to the base 3. In the electric fan, an air volume setting means 8 for setting the rotation speed of the fan motor 6; a fan motor control means 9 for changing the rotation speed of the fan motor 6 in a plurality of stages based on a signal of the air volume setting means 8; An intermittent timer 10 that repeatedly energizes and stops the fan motor 6 at regular intervals, and a reciprocating time of the motor case 4 that is swung by the swing motor 7, It is a control device of the fan, characterized in that setting time of the deletion timer 10 and is set at different times.

  The set time of the intermittent timer 10 is shorter than the reciprocation time of the motor case 4 by setting the energization time and the stop time of the fan motor 6 to be shorter than the reciprocation time of the motor case 4. Since the blowing and stopping of the blowing fan 5 are switched, the blowing time and the stopping time of the blowing fan 5 do not become too long.

  Further, the fan motor control means 9 varies the number of rotations of the fan motor 6 in a plurality of stages and can be driven at the number of rotations, and is driven at a lower number of rotations than the normal operation position 9a. When operating in the low power consumption position 9b, after driving for a predetermined time at the rotation speed of the normal operation position 9a, the rotation speed is changed to the rotation speed of the low power consumption position 9b. It can be operated at a voltage lower than the normal operable voltage.

  In the present invention, the fan motor control means 9 repeatedly energizes and stops the fan motor 6 at regular intervals by the intermittent timer 10 so that the wind of the blower fan 5 is intermittently sent at regular intervals. Since the wind of the blower fan 5 does not continuously hit the user, if the intermittent timer 10 is operated when the user uses it alone, it is not necessary to drive the swing motor 7, There is no longer any useless air blowing to the place where there is not. In addition, since the energization to the swing motor 7 becomes unnecessary and the energization of the fan motor 6 is stopped at regular intervals, the power consumption is reduced and the energy saving performance can be improved.

  In addition, the intermittent timer 10 and the swing motor 7 are set so that the operation time and the stop time of the fan motor 6 by the intermittent timer 10 are set different from the reciprocation time of the motor case 4 that swings by the swing motor 7. When operating together, it is possible to change the direction of the wind of the blower fan 5 even in the same place, so that it is possible to realize rhythm wind with a simple configuration without performing complicated control, The user can get a cool feeling.

  Further, when the fan motor 6 is energized and stopped at regular intervals by the intermittent timer 10, the energization time and stop time of the fan motor 6 are set shorter than the reciprocation time of the motor case 4, so that the motor case 4 Since the blowing and stopping of the blower fan 5 are switched in a time shorter than the time for one round trip, the blowing time and the stop time of the blower fan 5 do not become too long, and use without feeling a big difference in feeling of use. Can do.

  The fan motor control means 9 includes a normal operation position 9a for changing the rotation speed of the fan motor 6 in a plurality of stages, and a low power consumption position 9b for driving at a lower rotation speed than the normal operation position 9a. When driving at the power consumption position 9b, after driving for a predetermined time at the rotation speed of the normal operation position 9a, the rotation speed is changed to the rotation speed of the low power consumption position 9b. If the fan motor 6 is driven at the rotation speed of the normal operation position 9a, the fan motor 6 can continue to be driven even if the voltage is changed to the low power consumption position 9b lower than the normal operable voltage. Power consumption can be saved, and energy saving performance can be further improved.

It is a block diagram which shows the structure of the electric fan of the Example of this invention. It is sectional drawing of the principal part of the electric fan which shows the Example of this invention. It is a perspective view of the electric fan which shows the Example of this invention. It is a time chart at the time of the driving | operation of the electric fan which shows the Example of this invention.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 1 denotes a base of an electric fan, 2a denotes a cylindrical lower support erected from the center of the upper surface of the base 1, and 2b is attached to the lower support 2a so as to be movable up and down. The upper strut 2 is a strut constructed so that it can be expanded and contracted by the upper strut 2a and the lower strut 2b, and the height position of the electric fan can be adjusted by moving the upper strut 2b up and down.

  3 is a base provided at the upper end of the upper support 2b constituting the support 2, 11 is a motor base rotatably attached to the upper part of the base 3, 11a is a shaft provided on the motor base 11, and the shaft 11a A motor base 11 is rotatably attached to the base 3. Reference numeral 6 denotes a fan motor attached to the motor base 11, 6a denotes a rotating shaft of the fan motor 6, 5 denotes an air blowing fan attached to the rotating shaft 6a, and when the fan motor 6 is driven, the air blowing fan 5 attached to the rotating shaft 6a is Rotate. 4a is a fixed plate attached between the fan motor 6 and the blower fan 5, 4 is a motor case covering the fan motor 4 fixed by the fixed plate 4a, and 12 surrounds the front and rear of the blower fan 5 attached to the fixed plate 4a. It is a guard.

  Reference numeral 14 denotes an operation unit provided on the base 1, and 8 denotes an air volume setting means constituted by a switch arranged on the operation part 14. The air volume setting means 8 of the embodiment is constituted by one switch, and the air volume setting means 8 is When the button is pressed, the power is turned on and the operation is started with “weak”. Each time the air volume setting means 8 is pressed, the operation is switched in the order of “weak”, “medium”, “strong”, and “stop”. For this reason, the operation / stop of the electric fan and the switching of the air volume can be performed with one switch.

  Reference numeral 15 denotes a control device equipped with a microcomputer for controlling the operation of the electric fan disposed in the base 1, and 9 denotes fan motor control means for controlling the rotational speed of the fan motor 6 provided in the control device 15. When the air volume is selected, an output signal is sent from the control device 15 to the fan motor control means 9, and the fan motor control means 9 energizes the fan motor 6 with a preset voltage based on this output signal. Rotates at the set speed. When the air volume is changed by the air volume setting means 8, the voltage applied to the fan motor 6 is changed, the rotation speed of the fan motor 6 is changed, and the air volume of the blower fan 5 can be varied.

  7 is a swing motor attached to the motor base 11 in the motor case 4, 7 a is an eccentric cam attached to the swing motor 7, and 13 is a drive link connected between the eccentric cam 7 a and the base 3. When the motor 7 is driven, the eccentric cam 7a rotates, and the drive link 13 connected to the eccentric cam 7a reciprocates so that the motor base 11 swings around the shaft portion 11a. Swing left and right. Reference numeral 16 denotes a swing switch provided on the operation unit 14. When the swing switch 16 is pressed, the swing motor 7 is driven and the fan case 4 performs the swing operation, and a plurality of persons around the fan is operated. Can send wind.

  By the way, if it keeps hitting the wind of the blower fan 5 continuously for a long time, a body temperature may fall and a physical condition may be deteriorated. For this reason, there are some users who do not like the continuous wind, and even if they are used alone, they may swing their heads. Since the part blows toward a place where no one is present, the wind is wasted and wasteful power was consumed.

In addition, some recent fans have an operation mode called rhythm wind, etc., and this operation mode changes the air flow intensity of the blower fan and stops and changes in a preset pattern. When the wind was selected, the air flow was close to that of natural wind, and there was an effect that it was easier to obtain a cool feeling than normal continuous operation, but the program was complicated and led to an increase in cost.
Also, the rhythm wind pattern is set for each air volume of the blower fan. When the rhythm wind is selected when the air volume is set to “strong”, the blower fan will be “medium” “weak” “stop” "", The power consumption is less than when the operation is continuous at "strong". However, if the rhythm wind is selected when the air volume is set to “low”, the air volume will also switch to “strong” or “medium”, so the power consumption will be higher than when operating continuously at “low”. There was a problem that increased.

  The present invention proposes a fan that can obtain a cool feeling like a conventional rhythmic wind with a simple program configuration and can be expected to improve energy saving performance by reducing power consumption. The intermittent timer 17 provided is an intermittent operation switch provided in the operation unit 14. When the intermittent operation switch 17 is operated to select the intermittent operation, the control device 15 operates the intermittent timer 10. Repeat ON / OFF. In the embodiment shown in the time chart of FIG. 4, the intermittent timer 10 is set to repeat 6 seconds ON and 4 seconds OFF. The fan motor control means 9 energizes the fan motor 6 when the intermittent timer 10 is ON, and stops energization of the fan motor 6 when the intermittent timer 10 is OFF. For this reason, the fan motor 6 is intermittently operated, and the blower fan 5 driven by the fan motor 6 repeats the operation of stopping for a certain period of time when the fan blows for a certain period of time. It is a thing.

  For this reason, if intermittent operation is selected when the fan is used alone, the wind of the blower fan 5 does not continue to hit the user's body, so there is no need to perform swinging operation. When intermittent operation is performed, air is not blown to a place where there is no person as in swing operation, and all the wind of the blower fan 5 reaches the user, so that unnecessary air is not blown. Further, since the swing motor 7 is not energized and the fan motor 6 is stopped for a certain time, the power consumption can be reduced and the energy saving performance can be improved.

  In the present invention, the ON / OFF setting time of the intermittent timer 10 is set to be different from the one-time reciprocation time when the motor case 4 swings. When the swinging operation by the swing motor 7 is performed at the same time, when the blower fan 5 repeatedly blows and stops while the motor case 4 swings, the blowing range and the stop range of the blower fan 5 may be changed little by little. it can. For this reason, even if the user is in the same place, the wind direction of the blower fan 5 changes, so that a cool feeling like a conventional rhythm style can be obtained, and a complicated program is not necessary and can be realized with a simple configuration. It became a thing.

  When intermittent operation is performed, if the stop time of the fan motor 6 is set long, a reduction in power consumption can be expected. However, if the stop time of the blower fan 5 becomes too long, it becomes difficult for the user to obtain a cool feeling. On the other hand, if the energization time of the fan motor 6 is too long, the time for the wind of the blower fan 5 to continuously hit the user's body becomes long, and the body temperature may be lowered by the wind of the blower fan 5.

  For this reason, the ON time and OFF time of the intermittent timer 10 are set to be shorter than the reciprocation time when the motor case 4 is swung. Even if the set time of the intermittent timer 10 is longer than the reciprocation time of the motor case 4, the air blowing time and the stop time of the blower fan 5 do not become too long, so the cool feeling is impaired or the body temperature is lowered. There is no.

  In the embodiment shown in FIG. 4, the reciprocation time of the motor case 4 is 12 seconds, the ON / OFF setting time of the intermittent timer 10 is set to 10 seconds. It is set shorter than the swing time. In this configuration, since the blowing and stopping of the blower fan 5 are performed in a shorter time than one reciprocation of the motor case 4, it is possible to obtain a blown air that is close to the swinging operation and use without feeling a great difference in feeling of use. It became possible.

  Further, even if the air volume of the blower fan 5 is changed by the air volume setting means 8, the setting time of the intermittent timer 10 is not changed. When the intermittent operation is performed, the blow time and stop of the blower fan 5 are stopped. Only the air volume of the blower fan 5 is changed while maintaining the time. Further, since the rotation speed of the swing motor 7 does not change even if the air volume of the blower fan 5 is changed, the relationship between the blow timing of the blow fan 5 and the swing time of the motor case 4 can be maintained. There is no need to prepare a plurality of set times every time, and it can be realized at a low cost with a simple configuration.

  The fan motor control means 9 includes a normal operation position 9a in which the fan motor 6 is driven at a "strong, medium and weak" rotational speed, and a low power consumption position 9b in which the fan motor 6 is driven at a lower rotational speed than the weak operation in the normal operation position 9a. In the embodiment, the operation is performed at the low power consumption position 9b when the air volume is set to “weak”.

Since there is a minimum voltage required to start driving the fan motor 6 in a stopped state, when driving the fan motor 6, it is necessary to output a voltage higher than this minimum voltage. After the motor is driven, the fan motor 6 can be continuously driven even if the voltage is changed to a voltage lower than the minimum voltage.
For this reason, when the low power consumption position 9b is selected, the fan motor 6 is driven by first outputting the drive voltage during the weak operation of the normal operation position 9a, and the fan motor 6 is driven after the fan motor 6 is driven. The drive voltage is changed to a voltage lower than the startable voltage, and the fan motor 6 can be driven with a very low voltage, so that power consumption can be reduced and energy saving performance can be improved.

  In addition, when intermittent operation is selected at the low power consumption position 9b, when the intermittent timer 10 reaches the ON time, a drive voltage at the time of weak operation at the normal operation position 9a is first output. Since the driving voltage is changed to the driving voltage of the low power consumption position 9b after driving 6, the power consumption can be further reduced and the energy saving performance can be improved.

DESCRIPTION OF SYMBOLS 1 Base 2 Support | pillar 3 Base 4 Motor case 5 Blower fan 6 Fan motor 7 Swing motor 8 Air volume setting means 9 Fan motor control means 10 Intermittent timer

Claims (3)

A column (2) disposed on the top of the base (1) placed on the floor, a base (3) provided on the top of the column (2), and pivotally attached to the top of the base (3) A motor case (4),
A fan motor (6) for driving the blower fan (5) in the motor case (4) and a swing motor (7) for swinging the motor case (4) left and right with respect to the base (3) In the electric fan with
Air volume setting means (8) for setting the rotation speed of the fan motor (6), and fan motor control for varying the rotation speed of the fan motor (6) in a plurality of stages based on the signal of the air volume setting means (8). Means (9);
An intermittent timer (10) for repeatedly energizing and stopping the fan motor (6) at regular intervals;
A control device for a fan, wherein a reciprocating time of the motor case (4) driven to swing by the swing motor (7) and a set time of the intermittent timer (10) are set to different times. .   The set time of the intermittent timer (10) is set so that the energization time and stop time of the fan motor (6) are shorter than the reciprocation time of the motor case (4). Electric fan control device. The fan motor control means (9) varies the number of rotations of the fan motor (6) in a plurality of stages, and can be driven at the number of rotations of the normal operation position (9a) and the normal operation position (9a). In addition, it has a low power consumption position (9b) that is driven at a low rotational speed,
When operating at the low power consumption position (9b), after driving for a predetermined time at the rotation speed of the normal operation position (9a), the rotation speed is changed to the rotation speed of the low power consumption position (9b). Item 3. The electric fan control device according to item 1 or 2.

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