JP2003286993A - Electric fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To diversify use configurations and effectively diffuse negative ions radiated from an ion generating device even if a slide pipe is moved in vertical direction. <P>SOLUTION: In this electric fan, the slide pipe 5 slidably supporting an air blowing part 10 incorporating a fan in vertical direction is installed in a column 4 vertically installed on a base 3. The ion generating device 14 is installed on the base 3, and the radiating angle of the ion generating device 14 relative to a floor surface can be varied freely. The radiating angle of the ion generating device 14 is changed according to the slide position of the slide pipe 5. Specifically, a motor 22 as a drive part for changing the radiating angle of the ion generating device 14 and a detection part 25 for detecting the vertical position of the air blowing part 10 are installed, and the motor 22 is driven according to the vertical position of the air blowing part 10 detected by the detection part 25. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan provided with an ion generator.

[0002]

2. Description of the Related Art In recent years, negative ions are said to have the effect of neutralizing the lactic acid stored in muscle tissue to alleviate the feeling of fatigue, increase gamma-globulin in blood, and increase the resistance to diseases. Attention has been paid. Therefore, electric products to which an ion generator is added are attracting attention as relaxation-related products.

Among them, for example, air conditioners and the like are fairly expensive products, and air purifiers and the like have a small amount of air and are insufficient to fill the room with ions. Therefore, the one with an ion generator added to a fan is listed as a candidate as an electric product related to ion generation.

The applicant has found that when the ion generator is installed near the guard, the power supply becomes a problem, and when the ion generator is installed above the column or near the slide pipe, the ion generator greatly deteriorates the appearance. In consideration of the above, Japanese Patent Application No. 2001-371991 prior to the present application has been filed with a base on which an ion generator is attached with its irradiation direction directed obliquely upward.

In this fan, the irradiation direction of the ion generator is fixed in one direction, and negative ions can be diffused to the surroundings by being placed on the wind of the fan, but it is concentrated on the person sitting near the fan. It was not possible to deal with cases such as irradiation, and its intended use was limited.

Further, the ion generator is mounted so as to be obliquely upward so that the irradiated negative ions are not easily absorbed by the guard or the like and ride on the wind of the fan.

However, since the fan is provided with an elevating mechanism and the height of the fan is changed by sliding the slide pipe up and down, the angle of the ion generator with respect to the floor surface is prevented so that negative ions are not absorbed by the guard or the like. If it is installed at a position that makes the slider smaller, the fan separates from the ion generator that follows by sliding the slide pipe higher, and the negative ions carried by the wind of the fan are reduced.In extreme cases, the irradiated negative ions are the wind of the fan. There is a problem that the negative ions cannot be diffused well because they do not reach the height of.

Further, if the ion generator is mounted in a state where the angle with respect to the floor surface is large so that the slide pipe can be reached even at the uppermost end, negative ions absorbed by the guard and the like increase, and negative ions are efficiently generated. The problem arises that ions cannot be diffused.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fan capable of diversifying usage patterns and effectively diffusing negative ions emitted from an ion generator even when a blower is moved up and down. It is an issue.

[0010]

Means for solving the above-mentioned problem is to provide a fan in which a support pipe standing upright from a base is provided with a slide pipe for vertically slidably supporting a blower part containing a fan. The base is provided with an ion generator for generating negative ions, and the irradiation angle of the ion generator with respect to the floor is freely changeable.

In the above structure, a drive unit for changing the irradiation angle of the ion generator and a detector for detecting the height of the slide pipe are provided, and the height of the slide pipe detected by the detector is set. Accordingly, the drive unit is driven.

Further, the blower unit is pivotally supported in the horizontal direction by the support column, and the ion generator is sequentially swung in the direction of the wind when the blower unit is swung. .

Further, the base is provided with a control unit for controlling the blower unit in the vicinity below the ion generator.

A switch is provided to switch between driving and stopping the ion generator.

[0015]

DETAILED DESCRIPTION OF THE INVENTION A fan according to a first embodiment of the present invention will be described with reference to FIGS.

Reference numeral 2 denotes a stand of the fan body 1, which includes a base 3 installed on the floor, a support 4 detachably attached to the base 3, and a slide pipe 5 slidably supported by the support 4. , A neck piece 6 which is supported on the upper end of the slide pipe 5 so as to be lifted and lowered. A fan head 8 including a blower 7 is supported on the neck piece 6 so as to be swingable right and left.

Reference numeral 9 denotes a fan head 8 and a fan (not shown).
It is a guard that covers and is detachably attached. The fan, the guard 9, and the fan head 8 constitute a blower unit 10.

On the upper surface of the base 3, a power source / air volume switch (not shown) for driving and stopping the blower 7 and adjusting the air volume.
An operation unit 12 including a switch 11 and the like for switching between driving and stopping an ion generator 14 described later is provided, and an arc-shaped recess 13 is formed on the support 4 side of the operation unit 12.

Reference numeral 14 is an ion generator disposed in the recess 13, and shafts 16 and 1 projecting from both sides of the holder 15.
6 are pivotally supported in holes 17 formed in the side wall of the recess 13, respectively, and are pivotally supported by the side wall of the recess 13 so as to be rotatable, and pivoted by the frictional resistance between the shaft 16 and the hole 17. It is designed to be held in the specified position. A high-pressure needle 18 for generating negative ions is attached in the holder 15 in a state of being covered by a cylindrical cover 19 having an opening at the tip side of the high-pressure needle 18, and the negative ions are emitted from the high-pressure needle 18. It is supposed to be done. Where 20 is axis 1
6 is a spacer that is inserted into the shaft 6 to regulate the movement of the shaft 16 of the holder 15 in the axial direction.

Reference numeral 21 is a control board disposed in the base 3 so as to be positioned below and in the vicinity of the ion generator 14, and a control unit (not shown) for controlling the ion generator 14 and the blower 7 for driving the fan. No)) is installed.

In the electric fan having the above structure, when the power supply air volume switch is pressed, the fan 7 is driven and the fan rotates to send the air. In this state, when the switch 11 is pressed, the ion generator 14 operates, and negative ions are generated by the plasma discharge of the high-pressure needle 18, and the negative ions are repelled by each other to irradiate in the direction toward the high-pressure needle 18 and the surrounding air. Negatively ionize.

At this time, even if the slide pipe 5 is at the lowermost position, the ion generator 1 is so arranged that negative ions from the ion generator 14 do not reach the wind flow of the fan.
When the high-pressure needle 18 of No. 4 is rotated so as to face the front side (arrow A in FIG. 1), the air near the fan is negatively ionized without the negatively ionized air riding on the wind of the fan. It is possible to allow negative ions to work effectively when the user is sitting near the fan and using it.

When the ion generator 14 is manually rotated from this position until the negative ions reach the wind flow of the fan (arrow B in the figure), the air negatively ionized by the irradiated negative ions is blown by the fan. On the wind
Can spread farther.

When the slide pipe 5 is slid upward from this state, the blower unit 10 can be positioned at an arbitrary height up to the uppermost end of the slide pipe 5 so that the wind of the fan flows at a higher position. can do.

At this time, the ion generator 14 can be manually rotated so that the negative ions reach the flow of the fan as the air of the fan flows at a high position. Negative ions can be diffused to a farther position.

As described above, the ion generator 14 is rotatably provided on the base 3 so that the irradiation angle with respect to the floor can be changed, so that negative ions are irradiated near the fan or the wind of the fan. You can put it on the to spread it to a farther position. As a result, the irradiation angle of negative ions can be changed according to the purpose of use, the form of use can be diversified, and usability can be improved.

Even if the height of the slide pipe 5 is increased so that the wind of the fan flows at a higher position, the ion generator 14 can be rotated until the negative ions reach the flow of the wind of the fan. Negative ions can be surely placed on the wind of the fan to spread further.

Further, when the negative ions are diffused on the wind of the fan, when the slide pipe 5 has the highest height, the negative ions can reach the height of the wind flow of the fan. Since the ion generator 14 is rotatably provided on the base instead of fixing the irradiation angle, the irradiation angle of the ion generator 14 can be reduced as the height of the slide pipe 5 decreases. As the height of the pipe becomes lower, the negative ions can be prevented from being absorbed by the guard 8.

Since the control board 21 is provided below the ion generator 14 and in the vicinity thereof, the ion generator 14 is provided.
The wiring between the control unit and the control unit provided on the control board 21 can be shortened. Further, the heat generated in the control unit warms the surrounding air to generate an ascending air current, and the air that has been negatively ionized can be carried upward by this ascending air current. It reaches the flow of, and more negative ions can be put on the wind of the fan and diffused.

Further, since the ion generator 14 can be individually turned on and off by a switch 11 different from the main switch on the operation unit 12 of the fan, negative ions can be arbitrarily generated during the operation of the fan. Can be selected. Further, the switch 11 of the ion generator 14
If the input is made possible only while the blower 7 is being driven, negative ions can be efficiently dispersed in the surroundings, and the waste of electricity bill can be saved.

The second embodiment of the present invention is shown in FIGS.
Will be explained based on. The same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 22 denotes a motor (here, a stepping motor) which is attached to the base 3 and which rotates the ion generating device 14, and a shaft 16 on one side formed on a holder 15 of the ion generating device 14, Its drive shaft 2
2a are connected by a pin 23.

Reference numeral 24 denotes a control board disposed in the base 3 so as to be located below and in the vicinity of the ion generator 14, and drives the ion generator 14 and a motor 22 and a fan for rotating the ion generator 14. A control unit (not shown) that controls the blower 7 and the like is mounted.

Reference numeral 25 is a detection unit for detecting the height of the slide pipe 5, which is composed of a reflection plate 26 provided at the lower end of the slide pipe 5 and a position detection sensor 27 provided inside the lower portion of the column 4. The infrared rays emitted from the position detection sensor 27 are reflected by the reflection plate 26, and the time until the infrared rays reflected from the infrared rays are detected again by the position sensor 27 is detected, and the slide pipe is detected based on the detected time. The height of 5 is detected.

The operation unit 12 is provided with a power / air flow rate switch similar to that of the first embodiment and a switch 11 for switching between driving and stopping of the ion generating device 14. In the second embodiment, further, A case where the ion generator 14 is fixed to an irradiation angle that does not get on the wind of the fan even at the lowermost end of the slide pipe 5 regardless of the operation of the slide pipe 5,
A selection switch (not shown) that selectively switches between a case where the irradiation angle is changed according to the height of the slide pipe 5 and a case where the irradiation angle is changed is provided.

In the fan having the above structure, when the power supply air volume switch is pressed, the blower 7 is driven and the fan rotates to send the wind. When the switch 11 is pushed in this state, the ion generator 14 is driven.

At this time, when the selection switch is turned off, the ion generator 14 is set to a position (same position as arrow A in FIG. 1) where the wind flow of the fan does not ride even at the lowermost position of the slide pipe 5. It rotates, and at this position, negative and negative ions are emitted from the high-pressure needle 18 of the ion generator 14. As a result, the air in the vicinity of the fan is negatively ionized without the negatively ionized air riding on the wind of the fan, and the negative ions can be effectively operated when the user sits near the fan and uses it. .

On the other hand, when the selection switch is turned on, the height of the slide pipe 5 is detected by the detection unit 25, and the irradiation angle of the ion generator 14 with respect to the floor surface is determined according to the detected height of the slide pipe 5. Will be changed.

When the detection unit 25 detects that the slide pipe 5 is at the lowermost end, the ion generator 14 reaches the irradiation angle (arrow C in FIG. 4) at which negative ions can reach the flow of the fan at this time. It is rotated by the motor 22. The negative ions emitted from the ion generator 14 come to ride on the wind of the fan, and the negative ions diffuse farther.

When the slide pipe 5 is slid upward from this state, the blower unit 10 can be positioned at any height up to the uppermost end of the slide pipe 5 (state shown in FIG. 6), and the fan at a higher position. The wind will come to flow.

At this time, the position detecting sensor 27 of the detecting section 25
The height of the slide pipe 5 is detected by, and based on the detected height of the slide pipe 5, the ion generator 14 is driven by the motor 22 up to an irradiation angle at which negative ions can reach the wind of the fan flowing at a high position. It is rotated.

As a result, even if the height of the slide pipe 5 is increased so that the wind of the fan flows at a high position, the emitted negative ions will come to the wind of the fan again, and the negative ions will move farther. Can spread up to.

Further, when the slide pipe 5 has the highest height, the ion generator 1 is so arranged that negative ions from the ion generator 14 can reach the level of the air blown by the fan.
Instead of fixing the irradiation angle of 4, slide pipe 5
Since the irradiation angle of the ion generator 14 becomes smaller as the height of the blower becomes lower, negative ions can be emitted in a direction away from the blower unit 10 as the height of the slide pipe 5 becomes lower and absorbed by the guard of the blower unit. Can be suppressed.

At this time, since the irradiation angle of the ion generator 14 is automatically changed by the motor 22 according to the height of the slide pipe 5, the irradiation angle of the ion generator 14 is changed every time the slide pipe 5 is operated. It is possible to improve usability because it is not necessary to change by hand.

In the first and second embodiments,
The ion generator 14 can change the irradiation angle with respect to the floor surface. In addition to the change of the irradiation angle with respect to the floor surface,
When the swinging operation of the blower unit is performed, the irradiation direction may be constantly changed toward the direction of the wind of the fan during the swinging operation.

In this case, even if the direction of the wind of the fan changes due to the swinging motion of the blower, negative ions can be constantly radiated from the ion generator toward the wind of the fan during the swinging motion. During operation, the negative ions can be diffused on the wind of the fan at all times.

Also, by controlling the input voltage that regulates the oscillator output of the ion generator 14 according to the switching of the air volume of the fan, it is possible to have a circuit configuration in which the negative ion production volume is adjusted for each air volume. it can.

[0048]

According to the first aspect of the present invention, as the height of the slide pipe increases, the irradiation angle with respect to the floor surface of the ion generator is successively increased, so that the fan does not change even if the height of the slide pipe changes. The negative ions can be surely placed on the wind to diffuse the negative ions, and the negative ions can be prevented from being absorbed by the blower unit by successively decreasing the irradiation angle as the height of the slide pipe becomes lower.

According to the second aspect of the present invention, by driving the driving unit, the irradiation angle of the ion generator can be reduced when the air blowing unit detected by the detecting unit is low, and when the air blowing unit is high, the irradiation angle of the ion generating device can be reduced. Since the irradiation angle of the generator can be increased, it is not necessary to manually change the irradiation angle of the ion generator each time the slide pipe is operated, and the usability can be improved.

According to the third aspect of the present invention, by irradiating the direction of the wind of the fan with negative ions from the ion generator, even if the direction of the wind from the fan changes due to the swinging motion of the air blower, During the swinging operation, the negative ions emitted from the ion generator can be diffused farther by being placed on the wind of the fan.

According to the fourth aspect of the present invention, the wiring of the ion generating device can be shortened, and the upward airflow generated by the heat of the control unit is loaded with the negative ions emitted from the ion generating device, and is blown by the wind of the fan. You can make it easier to ride.

According to the fifth aspect of the present invention, by operating the switch, the generation of negative ions can be arbitrarily selected during the operation of the electric fan, and the usability can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an electric fan according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of an essential part near the ion generator in FIG.

3 is a sectional view taken along line XX in FIG.

FIG. 4 is a partially cutaway side view of the electric fan according to the second embodiment of the present invention.

5 is a cross-sectional view taken along line YY in FIG.

FIG. 6 is a side view in which the slide pipe of the fan is partially cut away in a state where the slide pipe is slid to the uppermost end.

[Explanation of symbols]

1 Fan body 3 base 4 props 5 slide pipe 10 air blower 11 switch 14 Ion generator 22 motor 25 Detector

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F04D 29/52 F04D 29/52 CE E 29/56 29/56 B EF term (reference) 3H022 AA04 BA01 BA07 CA48 CA50 CA56 DA00 DA09 DA20 3H032 JA00 JA10 LA00 LA09 3H034 AA02 AA14 BB02 BB08 BB20 CC03 CC07 DD01 DD26 DD27 DD28 DD30 EE00 EE12 EE15 EE18

Claims (5)

[Claims] 1. A fan having a slide pipe for vertically supporting a blower unit having a built-in fan slidably mounted on a pillar standing from a base, wherein an ion generator for generating negative ions is provided in the base, An electric fan characterized in that the irradiation angle with respect to the floor of the ion generator can be changed. 2. A drive unit for changing the irradiation angle of the ion generator and a detector for detecting the height of the slide pipe are provided, and the detector is provided according to the height of the slide pipe detected by the detector. The fan according to claim 1, wherein the fan is driven. 3. The ion blower is pivotally supported by the support column so as to be horizontally swingable, and the ion generator is
The fan according to claim 1 or 2, wherein the fan is successively swung in the direction of the wind when the fan is swung. 4. The control unit for controlling the blower unit is provided below the ion generator in the vicinity of the base, and the control unit is provided in the base. Fan. 5. The fan according to claim 1, further comprising a switch for switching between driving and stopping the ion generator.