JP4665934B2 - Heating blower - Google Patents

Description

  The present invention relates to a heated air blower such as a hair dryer or a hot air blower.

  In a heated air blower such as a hair dryer or a warm air blower, when the air sucked from the suction port is sent out to the discharge port by a rotationally driven fan, a heating unit is arranged in the internal air flow path. Heated air is discharged from the discharge port.

  In such a heating device, in which an ion generating part for generating negative ions is added, in order to avoid restriction of the amount of ions passing through the lattice-shaped member arranged in the discharge port, the suction port is changed from the discharge port to the discharge port. A bypass flow path that is discharged to the outside without passing through the heating means is provided from the middle of the air flow path to reach, and an ion generator is disposed in the bypass flow path (see Patent Document 1).

However, since the ion generator has an electrically high voltage portion, a cover is provided to prevent fingers from entering the ion generator from the outside at the ion outlet from which the generated negative ions are discharged. However, although the opening for allowing the ions to pass through is provided, the cover made of an insulator is charged by the ions generated by the ion generator, This causes a situation where the amount of ion passing is reduced.
JP 2002-191426 A

  The present invention has been invented in view of the above-described conventional problems, and an object of the present invention is to provide a heated air blower that can discharge ions favorably while ensuring safety.

In order to solve the above-described problems, a heating blower according to the present invention includes a fan and heating means that are rotationally driven in an air flow path from an inlet port to a discharge port, and branches from the air flow path. In the heating air blower in which the ion generating means including the discharge electrode and the counter electrode is arranged in the flow path leading to the ion outlet, a cover having an opening for allowing the ions to pass through is provided in the ion outlet. And a protrusion integrally provided on the back surface of the cover that covers the outer periphery of the discharge port located in front of the ion blowing port and is located on the cover side of the discharge electrode in the ion generating means The cover is grounded via a counter electrode. Since the cover provided at the ion outlet is grounded, it does not limit the ion outlet.

  If a biasing unit that biases the ion generating unit toward the protrusion side of the cover is provided, a more stable grounding state can be obtained.

The cover may cover only the surface on the ion outlet side on the outer periphery of the outlet.

Further, when the main body housing that covers the air flow path from the suction port to the discharge port is formed to be divided into left and right when viewed from the discharge port side, the cover is divided by covering the outer periphery of the front end portion of the main body housing. The main body housing may be combined .

According to the present invention, safety can be ensured by the presence of the cover, and it is possible to discharge a large number of ions without the cover being charged and restricting the blowing of ions. In addition, since the counter electrode in the ion generating means is used for grounding, it is not necessary to separately draw a grounding wire. In addition, since the cover also covers the outer periphery of the discharge port located in front of the ion outlet, the outer periphery of the outlet is not charged with ions, further eliminating the restriction of the ion outlet. Can do.

Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIGS . 1 to 4 show a hair dryer according to the present invention, in which a rear end surface is a suction port 11 and a front end surface is a discharge port 12. In the cylindrical main body housing 3, the grip portion 1 is connected to the lower surface on the rear end side.

  The main body housing 3 is provided with a wind tunnel 2 in which a motor 20 and a fan 21 are positioned inside, and a wind tunnel 4 is also provided in the front portion. A wind tunnel 4 in which a heater (not shown) is disposed is set in the main body housing 3 with an annular air flow path secured between the inner surface of the main body housing 3 and the wind tunnel 2. The wind from the fan 21 is mainly directed to the discharge port 12 through the wind tunnel 4, but in addition to the flow path between the inner peripheral surface of the housing 3 and the outer peripheral surface of the wind tunnel 4. Some of them pass through to the discharge port 12. This is because the cool air that does not pass through the heater portion surrounding the warm air heated by the heater is also discharged from the discharge port 12 so that the hair is not heated too much. In the figure, reference numeral 44 denotes a lattice in the front portion of the wind tunnel 4 for preventing fingers from touching the heater.

An ion generating means 5 is arranged on the upper surface side of the main body housing 3. The ion generating means 5 shown here is a cooling means for condensing moisture in the air on the discharge electrode 51 by cooling the discharge electrode 51 in addition to the needle-like discharge electrode 51 and the ring-shaped counter electrode 52. 53 and an electrostatic atomizing function including a heat dissipating portion 54 for dissipating heat generated from the cooling means 53 comprising a Peltier element. The discharge electrode 51 is a high voltage generating means (not shown). ) And the counter electrode 52 is grounded.

  When a negative high voltage from the high voltage generating unit is applied to the discharge electrode 51 that is cooled by the cooling unit 53, water generated on the discharge electrode 51 due to dew condensation is generated between the discharge electrode 51 and the counter electrode 52. At the time of discharge, Rayleigh splitting occurs to form negatively charged fine particle water, which is discharged to the outside from the ion outlet 13 formed on the upper front surface of the main body housing 3. A part of the wind generated by the fan 21 also flows into the space where the ion generating means 5 is arranged to cool the heat radiating portion 54, and a part of the air exits from the ion outlet 13, so that ions (charged fine particles) Wed) goes out in this wind.

Here, a cover 6 is provided at the ion outlet 13 to prevent fingers from entering the inside. As shown in the figure, the cover 6 having an opening for allowing ions (charged fine particles) to pass therethrough is formed of an insulating material and has a plurality of protrusions protruding toward the back side, that is, toward the ion generating means 5 side. The protrusion 60 is integrally provided. These protrusions 60 are in contact with the front side of the counter electrode 52 in the ion generating means 5, and for this purpose, the cover 6 is grounded via the counter electrode 52.

  Therefore, when the ion generating means 5 is operated to generate ions (charged fine particle water) and discharged from the ion blowing port 13 through the opening in the cover 6, the cover 6 is charged and obstructs the blowing of ions. There is no such thing as doing it.

  The counter electrode 52 having a ring shape and a circular opening in the center is a portion where the inner peripheral edge of the counter electrode 52 generates a discharge with the discharge electrode 52. The plurality of protrusions 60 in the cover 6 are provided so as to be in contact with a portion near the inner peripheral edge of the counter electrode 52 at equal intervals in the circumferential direction, and are provided in a portion near the edge of the opening in the cover 6. Thus, the ions that pass through the opening of the cover 6 are prevented from being more electrically affected.

Meanwhile, in order to stabilize the contact state between the projection 60 and the discharge electrode 52, preferably it has been installed in a state of biasing the ion generating unit 5 on the cover 6 side. By doing in this way, the contact pressure between the discharge electrode 52 and the protrusion 60 can be increased.

In addition, although the illustrated example shows one having an electrostatic atomization function, even the ion generation means 5 which includes the discharge electrode 51, the counter electrode 52 and the high voltage generation means and does not have the electrostatic atomization function. In this case as well, the cover 6 can be grounded through the counter electrode 52 by bringing the protrusion 60 on the back surface of the cover 6 into contact with the counter electrode 52 .

1 to 4 , not only the cover 6 is positioned in front of the ion outlet 13, but also the discharge outlet located in front of the ion outlet 13 from the periphery of the ion outlet 13. 12 is formed as a member that covers up to the outer peripheral portion, and a portion that covers the outer periphery of the discharge port 12 is a cylindrical portion 62 that covers the entire periphery of the discharge port 12. Further, the cylindrical portion 62 of the cover 6 is put on the front end portion of the main body housing 3 that is formed by dividing the left and right parts, so that the two-part main body housing 1 is coupled and the main body housing 3 is further covered with the cover 6. Because of the overlap, physical strength can be improved. In the figure, reference numeral 45 denotes a nozzle arranged at the blowout port 13, and the nozzle 45 discharges the air exiting the discharge port 12 by two nozzle ports in a state of being divided into two flows.

As described above, the cover 6 that is grounded by contact with the counter electrode 52 covers not only the ion outlet 13 but also the outer peripheral portion of the outlet 12 positioned on the front side of the ion outlet 13. Therefore, what is charged by the ions exiting from the ion outlet 13 does not exist in the ion ejection direction, so that the ions can be ejected more effectively.

  Although the cover 6 covers the entire outer periphery of the discharge port 12 here, the cover 6 may cover only the upper surface side of the discharge port 12 where the ion outlet 13 is present. Moreover, although the cylindrical part 62 in the cover 6 has covered the outer periphery of the front-end | tip part of the main body housing 3 comprised in half, the cover 6 showed what has also contributed to the coupling | bonding of the half main body housing 3. FIG. However, the present invention is not limited to this configuration.

It is a perspective view of an example of an embodiment of the invention. It is an exploded perspective view same as the above. It is sectional drawing same as the above. It is a fragmentary sectional view same as the above .

3 Body housing 4 Wind tunnel 5 Ion generating means 6 Cover 13 Ion outlet 51 Discharge electrode 52 Counter electrode 60 Projection

Claims (4)

A fan that is driven to rotate and a heating unit are arranged in the air flow path from the suction port to the discharge port, and the discharge electrode and the counter electrode are branched in the flow path that branches from the air flow channel and reaches the ion blowing port. In a heating air blower that is provided with ion generating means comprising:
A cover provided with an opening for allowing ions to pass through is provided at the ion outlet, and is provided integrally with the back surface of the cover that also covers the outer periphery of the discharge outlet located in front of the ion outlet . A heating air blower characterized in that the protrusion is in contact with the counter electrode located on the cover side of the discharge electrode in the ion generating means, and the cover is grounded via the counter electrode.   The heating air blower according to claim 1, further comprising an urging unit that urges the ion generating unit toward the protruding portion of the cover. The heated air blower according to claim 1, wherein the cover covers only the surface on the ion outlet side on the outer periphery of the outlet . The main body housing that covers the air flow path from the suction port to the discharge port is formed as divided into left and right when viewed from the discharge port side, and the cover covers the main body housing that is divided by covering the outer periphery of the front end portion of the main body housing. The heating air blower according to claim 1 , wherein the heating air blower is combined .

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