JP2009127461A - Electric fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To generate an oil having a long service life in an electric fan capable of generating a negative ion. <P>SOLUTION: This electric fan has a discharge electrode 21 and its counter electrode 22, a water storage tank 23 and a water suction pipe 24 supplying moisture to the discharge electrode 21, and has an electrostatic atomizer 25 for atomizing the moisture held in the discharge electrode 21 by impressing high voltage between the discharge electrode 21 and the counter electrode 22. Thus, the ion useful for the human body and having the effect on deodorization and sterilization is wrapped in water, and can be discharge in the air as ion mist having the long service life, and the ion mist being heavy by the extent of being wrapped by the water, can also be diffused over a wide range by the electric fan 1. A jetting port 22a of the electrostatic atomizer 25 is arranged on an upper surface of a motor cover 5c, and the jetting direction of the ion mist is arranged by inclining vertically upward or in the blade direction from the vertical upper part. Thus, the jetting direction of the ion mist can be always set in the wind turning direction of the electric fan 1 even to oscillation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric fan.

  The electric fan is a completed product and has been used as a means for obtaining coolness since ancient times. However, in recent years, it has been used steadily as it is used to stir indoor air and increase the efficiency of air conditioning.

  On the other hand, this is also an old technique, and there is a negative ion generator that generates negative ions. By diffusing the negative ions, it is beneficial to the human body and is used for deodorization and sterilization.

Therefore, Patent Document 1 discloses a conventional technique that combines these two techniques. The patent document 1 discloses a blower device provided with the negative ion generator.
Japanese Patent Laid-Open No. 9-245935

  The above-mentioned conventional technology is excellent in that it can fly the negative ions far away by taking advantage of the wind of the electric fan. However, a simple negative ion has a short lifetime, and when it collides (adsorbs) with something, there is a problem that it immediately bonds with the positive ion and disappears. For example, the lifetime is about 1 minute.

  An object of the present invention is to provide a fan capable of multiplying long-life ions by the wind of the fan and diffusing it into the air.

  The electric fan of the present invention includes a discharge electrode and water supply means for supplying water to the discharge electrode, and applies a high voltage to the discharge electrode to atomize the water retained in the discharge electrode. An electrostatic atomizer that ejects mist outward is provided.

  According to the above configuration, ions that are beneficial to the human body and effective in deodorization and sterilization can be released into the air as an ion mist having a long lifetime. Moreover, the heavy ion mist wrapped in water can be diffused in a wide range by a fan.

  Further, the electric fan of the present invention is characterized in that the electrostatic atomizer is disposed on the upper surface of the cover of the motor, and the ejection direction of the ion mist is inclined vertically upward or from the vertically upward direction to the blade direction. And

  According to the above configuration, the ejection port of the electrostatic atomizer is arranged on the windward side, and the ion mist emission direction is always the direction in which the fan wind is directed against the swing, etc. Mist can be effectively diffused. Further, the generated ion mist can be prevented from directly hitting the vanes and disappear, and the ion mist can be diffused into the air more efficiently. Furthermore, when the electrostatic atomizer is attached to the front cover, there is a possibility that the wiring of the high-voltage wiring to the electrostatic atomizer, which becomes 5 to 6 kV, is exposed during storage and cleaning. There is no such problem.

  Furthermore, the electric fan of the present invention is characterized by further comprising charging means for charging the back cover of the covers covering the blades with the same polarity as the ion mist.

  According to said structure, it can prevent that the generated ion mist goes to a blade | wing, and can diffuse ion mist in the air more efficiently.

  Further, in the electric fan of the present invention, the water supply means includes an endothermic body, and the endothermic body cools the discharge electrode, thereby condensing or icing moisture in the air to the discharge electrode to supply moisture. It is characterized by having.

  According to said structure, water supply is unnecessary and a user's effort is not taken and the convenience can be improved.

  Furthermore, in the electric fan according to the present invention, the electrostatic atomizer operates in conjunction with on / off of a motor.

  According to said structure, an operation | movement can be started and stopped reliably, and the possibility of forgetting to turn on and turning off an operation switch can be eliminated.

  Further, in the electric fan of the present invention, a vent hole is provided on the back surface of the cover of the motor, and the vent hole is a second air path that communicates with the jet port and a second heat dissipation part of the heat absorber. It branches to the air flow path.

  According to said structure, cooling efficiency improves by utilizing the flow of the wind of an electric fan appropriately, and cooling the thermal radiation part of a heat sink, and it is not necessary to provide a ventilation fan separately.

  As described above, the electric fan according to the present invention includes the discharge electrode and water supply means for supplying moisture to the discharge electrode, and the moisture held in the discharge electrode by applying a high voltage to the discharge electrode. An electrostatic atomizer that atomizes and generates ion mist is provided.

  Therefore, ions that are beneficial to the human body and effective for deodorization and sterilization can be released into the air as long-lived ion mist, and are also contained in water. Heavy ion mist can be diffused over a wide range by a fan.

  In the electric fan of the present invention, as described above, the electrostatic atomizer is arranged on the upper surface of the cover of the motor, and the ion mist ejection direction is inclined vertically upward or from the vertical upper direction to the blade direction. To do.

  Therefore, the emission direction of the ion mist is always the direction of the wind of the electric fan even when the head is swung, and the generated ion mist can be effectively diffused. Further, the generated ion mist can be prevented from directly hitting the vanes and disappear, and the ion mist can be diffused into the air more efficiently. Furthermore, when the electrostatic atomizer is attached to the front cover, there is a possibility that the wiring of the high-voltage wiring to the electrostatic atomizer, which becomes 5 to 6 kV, is exposed during storage and cleaning. There is no such problem.

  Furthermore, as described above, the electric fan of the present invention further includes charging means for charging the back cover of the covers covering the blades with the same polarity as the ion mist.

  Therefore, it is possible to prevent the generated ion mist from moving toward the blade and to diffuse the ion mist more efficiently in the air.

  In the electric fan of the present invention, as described above, the water supply means includes a heat absorber, and the discharge electrode is cooled to condense or freeze moisture in the air to supply the moisture. The configuration is as follows.

  Therefore, it is possible to improve convenience without requiring water replenishment and making the user troublesome.

  Furthermore, as described above, the electric fan of the present invention causes the electrostatic atomizer to interlock with the on / off of the motor.

  Therefore, the operation can be reliably started and stopped, and the possibility of forgetting to turn on or off the operation switch can be eliminated.

  Further, as described above, the electric fan of the present invention is provided with a vent hole on the back surface of the cover of the motor, the first air flow path communicating with the vent hole to the jet port, and a heat radiating portion of the heat absorber. It branches to the 2nd air flow path which goes through.

  Therefore, cooling efficiency is improved by appropriately using the wind flow of the fan and cooling the heat radiating portion of the heat absorbing body, and it is not necessary to provide a separate blower fan.

[Embodiment 1]
FIG. 1 is a side view showing the structure of the electric fan 1 according to the first embodiment of the present invention. In this electric fan 1, the structure for ventilation is the same as that of a normal electric fan. In other words, a telescopic column 3 is erected from the base 2, and the motor can be tilted back and forth (elevation angle adjustment) around the left and right axis 4 at the upper end of the column 3 and angularly displaced (swinged) in a horizontal plane. A unit 5 is provided, and a blade 6 and front and rear covers 7 and 8 are attached to the motor unit 5. The blade 6 and the front and rear covers 7 and 8 are assembled by first attaching the rear cover 8 to the front surface of the motor cover 5c by inserting the shaft 5b of the motor 5a through the opening formed in the center thereof, and then The blade 6 is attached to the shaft 5b by a screw cap 9, and finally the front cover 7 is fastened to the rear cover 8 by a hook (not shown) or the like. The reverse is true when disassembling. In response to the operation of the operation unit 10 provided on the base 2, the drive control circuit 11 controls the rotation of the motor 5a and controls the swing mechanism using the power.

  In the electric fan 1 configured as described above, it should be noted that in the present embodiment, the motor cover 5c is provided with the discharge electrode 21, its counter electrode 22, and water supply means for supplying moisture to the discharge electrode 21. An electrostatic atomizer for atomizing water held in the discharge electrode 21 by applying a high voltage between the discharge electrode 21 and the counter electrode 22. 25. The water supply pipe 24 supplies water from the water storage tank 23 to the discharge electrode 21 using a capillary phenomenon. The water storage tank 23 is detachable, so that convenience is improved.

  By configuring in this way, ions that are beneficial to the human body and that are effective for deodorization and sterilization are wrapped in water and do not immediately bind to positive ions even if they are adsorbed. It can be released into the air as a long nano-sized ion mist, and the heavy ion mist encased in water can be diffused over a wide range by the wind of the electric fan 1, which is effective.

  Further, in the electric fan 1 of the present embodiment, the ion mist outlet 22a in the electrostatic atomizer 25 is disposed on the upper surface of the motor cover 5c, and the ion mist is ejected vertically upward or vertically. It is arranged so as to be inclined in the blade direction from above (inclined in the blade direction in FIG. 1). As described above, the jet nozzle 22a of the electrostatic atomizer 25 is arranged on the windward side, and the ion mist is emitted in the direction in which the wind of the electric fan 1 is always directed even when the head is swung. Ion mist can be effectively diffused. Moreover, it is possible to prevent the generated ion mist from directly hitting the vanes 6 and disappear, and to diffuse the ion mist more efficiently in the air. Furthermore, when the electrostatic atomizer 25 is attached to the front cover 7, the high-voltage wiring 26 routed to the electrostatic atomizer 25, which is 5 to 6 kV, is exposed during storage and cleaning. However, such a problem does not occur. The inclination angle of the electrostatic atomizer 24 may be determined according to the flow rate of air sucked into the blades 6 at an initial speed of ion mist of about 1 m / sec, for example, and is variable according to the flow rate. May be controlled.

  Here, in the prior art of Patent Document 1, the negative ion generator is provided facing the front on the upper part of the motor cover, and the negative ions generated as described above collide with the blade, It disappears in a very short time.

  Japanese Patent Laid-Open No. 2002-303296 discloses a structure in which an ionization electrode is provided on the front portion of a blade cover. However, in this configuration, collision of the ions with the blades can be avoided, but the cover becomes large and a high voltage is supplied to the front surface of the cover as described above. There is also a problem with safety in relation to rotation.

  Furthermore, in Japanese Patent Application Laid-Open No. 2003-272799 and Japanese Patent No. 3759586, the ion generator is provided on the fan support or the stand base. However, the diffusion effect is small, and when swinging, There is a problem that a sufficient diffusion effect cannot be expected.

  Furthermore, in the electric fan 1 of the present embodiment, a high voltage from the drive control circuit 27 is applied to the discharge electrode 21 and the counter electrode 22 of the electrostatic atomizer 25 via the high-voltage wiring 26. The drive control circuit 27 includes a control circuit including a high voltage generation circuit and a low voltage generation circuit as charging means. A high voltage is applied to the discharge electrode 21 and the counter electrode 22, and a low voltage is applied to the rear cover 8 through a low-voltage wiring 28. Thereby, the rear cover 8 is charged with the same polarity as the ion mist. Therefore, it is possible to prevent the generated ion mist from moving toward the blade 6 and to diffuse the ion mist more efficiently in the air.

  Furthermore, in the electric fan 1 of the present embodiment, the drive control circuit 10 and the drive control circuit 27 are connected by a signal line 29, and the drive control circuit 27 is linked to the drive control circuit 10 to The atomizing device 25 is operated in conjunction with the on / off of the motor 5a. Therefore, the operation can be reliably started and stopped, and the possibility of forgetting to turn on or off the operation switch can be eliminated.

[Embodiment 2]
FIG. 2 is a side view showing the structure of the electric fan 1 ′ according to the second embodiment of the present invention. This electric fan 1 ′ is similar to the electric fan 1 described above, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. It should be noted that in this electric fan 1 ′, the water supply means in the electrostatic atomizer 25 ′ includes a Peltier unit 31 that is a heat absorber, and the discharge electrode 21 is cooled to remove moisture in the air. The moisture is supplied to the discharge electrode 21 by condensation or icing.

  FIG. 3 is an enlarged cross-sectional view of the electrostatic atomizer 25 '. The electrostatic atomizer 25 ′ is roughly composed of the needle-shaped discharge electrode 21 and the ring-shaped counter electrode 22 that is opposed to the front side of the discharge frame 21 at a predetermined interval by the support frame 20. The Peltier unit 31 that cools the discharge electrode 21 is provided. The negative high voltage generated by the high voltage generation circuit of the drive control circuit 27 is applied to the discharge electrode 21 from a resistor (not shown) for adjusting the high voltage.

  The discharge electrode 21 is cooled by the Peltier unit 31 as described above, so that moisture in the air is condensed or frozen on the outer peripheral surface, and high voltage discharge is performed between the electrodes 21 and 22 on the moisture. Nano-sized negative ion mist can be generated without water supply. The moisture obtained by freezing is also dissolved by turning off the cooling of the Peltier unit 31 or reversing the polarity of energization to the Peltier unit 31 and heating the discharge electrode 21, and facing the discharge electrode 21. Due to the electric field between the electrodes 22, it is drawn toward the tip convex portion 21 a side. The electrostatic atomizer 25 ′ thus configured is mounted on the inner frame 5 d of the motor unit 5, and then a high voltage is applied to the front while allowing the ion mist to pass therethrough. A perforated plate (not shown) for preventing entry of foreign matter from the jet nozzle 22a of the electrostatic atomizer 25 'is disposed, and these are covered with the motor cover 5c.

  The Peltier unit 31 has a pair of Peltier circuit boards 31a, 31b formed by forming a circuit on one surface of an insulating board made of alumina, aluminum nitride, or the like having high thermal conductivity, so that the circuits face each other, A large number of, for example, BiTe thermoelectric elements 31c are sandwiched between the Peltier circuit boards 31a and 31b, and adjacent thermoelectric elements 31c are electrically connected to each other by circuits on both sides. By doing so, heat is configured to move from one Peltier circuit board (31a in this embodiment) side toward the other Peltier circuit board (31b) side. Then, a high thermal conductivity and high electric resistance insulating plate 31d made of alumina, aluminum nitride or the like is bonded to the surface of the Peltier circuit board 31a opposite to the thermoelectric element 31c, and the insulating plate 31d serving as a heat absorbing portion. The discharge electrode 21 is erected at a substantially central portion. Further, on the surface opposite to the thermoelectric element 31c of the Peltier circuit board 31b, a heat dissipating portion, and heat dissipating fins 31e made of alumina, aluminum nitride or the like and having high thermal conductivity and high electric resistance are bonded.

  With this configuration, it is possible to improve convenience without requiring water replenishment and making the user troublesome.

  Also, it should be noted that a vent hole 5e is provided on the back surface of the motor cover 5c, and the vent hole 5e connects the first air flow path 5f for promoting the ejection of the ion mist and the radiating fin 31e. It is branched to the second air flow path 5g for cooling. A fan 32 is provided in the vent hole 5e. By comprising in this way, it can prevent that the hot air after cooling the radiation fin 31e flows into the discharge electrode 21 side, and the said dew condensation or icing, ie, the efficiency of moisture supply falls.

[Embodiment 3]
FIG. 4 is a side view showing the structure of an electric fan 1 ″ according to the third embodiment of the present invention. This electric fan 1 ″ is similar to the electric fan 1 ′ described above, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. It should be noted that in this electric fan 1 ″, the shaft 5b ′ of the motor 5a ′ projects forward and backward of the motor 5a ′, and the fan 33 is rotated on the rear side. The motor 5a ′ is cooled by the air flow obtained by the rotation of the fan 33, and the cooling of the heat radiation fin 31e by the second air flow path 5g and the ion mist by the first air flow path 5f. Eruption is promoted.

  By comprising in this way, cooling efficiency improves by using the flow of the wind of fan 1 '' appropriately, and cooling the radiation fin 31e, and it is not necessary to provide a separate ventilation fan. The fan 32 provided in the vent hole 5e may be rotated by transmitting the rotational force of the shaft 5b 'of the motor 5a' with a gear or the like.

It is a side view which shows the structure of the electric fan which concerns on the 1st Embodiment of this invention. It is a side view which shows the structure of the electric fan which concerns on the 2nd Embodiment of this invention. It is an expanded sectional view of the electrostatic atomizer used for the electric fan shown in FIG. It is a side view which shows the structure of the electric fan which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

1, 1 ', 1''electric fan 2 base 3 support 5 motor unit 5a, 5a' motor 5c motor cover 5e vent hole 5g, 5h air flow path 6 blade 7 front cover 8 rear cover 10 operation unit 11, 27 drive control Circuit 21 Discharge electrode 22 Counter electrode 22a Spout 23 Storage tank 24 Water absorption pipe 25, 25 'Electrostatic atomizer 26 High voltage wiring 28 Low voltage wiring 31 Peltier units 31a, 31b Peltier circuit board 31c Thermoelectric element 31e Radiating fins 32, 33 Fan

Claims (6)

  A discharge electrode and water supply means for supplying moisture to the discharge electrode are provided, and a high voltage is applied to the discharge electrode to atomize the moisture held in the discharge electrode, thereby ejecting ion mist outward. The electric fan characterized by comprising the electrostatic atomizer which performs.   2. The electric fan according to claim 1, wherein the electrostatic atomizer is disposed on an upper surface of a cover of the motor, and the ejection direction of the ion mist is disposed vertically upward or inclined to the blade direction from the vertical upper direction. .   The electric fan according to claim 1 or 2, further comprising charging means for charging a back cover of the blades with the same polarity as that of the ion mist.   The water supply means includes an endothermic body, and the endothermic body has an endothermic unit that supplies moisture by cooling or condensing moisture in the air to the discharge electrode by cooling the discharge electrode. The electric fan of any one of claim | item 1-3.   The electric fan according to any one of claims 1 to 4, wherein the electrostatic atomizer operates in conjunction with on / off of a motor.   A vent hole is provided on the back surface of the cover of the motor, and the vent hole branches into a first air flow path communicating with the jet outlet and a second air flow path passing through the heat radiating portion of the heat absorber. The electric fan according to claim 4, wherein the electric fan is provided.

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