JP2008029813A - Heating and blowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating and blowing apparatus capable of efficiently delivering ions while assuring safety. <P>SOLUTION: The heating and blowing apparatus includes: a rotationally driven fan 21 and a heating unit arranged on an air flow path, the air flow path extending from the inlet port 11 to a delivery port 12; and an ion generator 5 including a discharge electrode 51 and an opposing electrode 52 arranged in a bypass flow path, the bypass flow path branching off from the air flow path and leading to an ion emission port 13. Further, it includes a cover 6, arranged at the ion emission port, having an opening through which ions pass and protrusions provided on a rear surface of the cover, the protrusion making contact with the opposing electrode placed closer to the cover than the discharge electrode is, wherein the cover is grounded through the opposing electrode. Since the cover is grounded, discharge of ions is not restricted. <P>COPYRIGHT: (C)2008,JPO&INPIT

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 part, 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 provided on the back surface of the cover 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. have. Since the cover provided at the ion outlet is grounded, it does not limit the ion outlet.

  If a biasing means for biasing the ion generating means toward the protruding portion of the cover is provided, a more stable grounding state can be obtained.

  In the case where the discharge port is located in front of the ion blowing port, it is preferable that the cover also covers the outer periphery of the discharge port. Since the outer peripheral portion of the discharge port is not charged with ions, it is possible to further eliminate restrictions on ion blowing.

  At this time, the cover may cover only the surface on the ion outlet side on the outer periphery of the outlet. Moreover, the said cover may be covered on the outer surface of the main body housing which covers the air flow path from an inlet to an outlet.

  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.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIGS. 1 to 3 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 located 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 50 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 FIG. 2, the cover 6 having an opening for allowing ions (charged fine particles) to pass therethrough is formed of an insulating material and protrudes toward the back side, that is, toward the ion generating means 5 side. A plurality of protrusions 60 are 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. Therefore, the electrical influence is not more exerted on the ions passing through the opening of the cover 6.

  By the way, in order to stabilize the contact state between the protrusion 60 and the discharge electrode 52, here, the ion generating means 5 is attached in a state of being biased toward the cover 6 side. That is, as shown in FIG. 4, the ion generating means 5 is attached to the outer surface of the wind tunnel 4. Here, the ion generating means 5 is attached to the wind tunnel 4 through the attachment plate 55 and is integrally formed on the outer surface of the wind tunnel 4. When the attachment plate 55 is received at the tip of the rib 45, the rib 45 prevents the attachment plate 55 from moving backward, and when the cover 6 and the ion generating means 5 are assembled, the attachment plate 45 is removed. A forward biasing force due to the bending of the rib 45 and the bending of the mounting plate 55 acting on the front side acts between the discharge electrode 52 and the protrusion 60 of the cover 6, and between the discharge electrode 52 and the protrusion 60. The contact pressure is increased.

  FIG. 5 shows another example. This is composed of a discharge electrode 51, a counter electrode 52, and a high voltage generating means, and is provided with an ion generating means 5 that does not have an electrostatic atomizing function, and makes the protrusion 60 on the back surface of the cover 6 contact the counter electrode 52. This is the same as the above embodiment in that the cover 6 is grounded through the counter electrode 52.

  Another embodiment is shown below in FIG. The basic configuration is the same as that described above, but here the cover 6 is not only positioned in front of the ion outlet 13 but also from the periphery of the ion outlet 13 to the front side of the ion outlet 13. A portion covering the outer periphery of the discharge port 12 is formed as a member that covers the entire outer 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 formed in the left and right halves, so that the split 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 disposed at the outlet 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.

  The cover 6 that is grounded in contact with the counter electrode 52 in the same manner as in the above-described embodiment, in addition to the ion blowing port 13, has a discharge port 12 that is positioned in front of the ion blowing port 13. Since the outer peripheral portion is also covered, what is charged by the ions exiting from the ion outlet 13 does not exist in the ion discharge direction, so that the ions can be discharged 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 principal part sectional drawing of an example of embodiment of this invention. It is a front view same as the above. It is a side view same as the above. It is a perspective view of a wind tunnel same as the above and an ion generation means. It is a fragmentary sectional view of other examples. It is a perspective view of another example. It is an exploded perspective view same as the above. It is sectional drawing same as the above. It is the same fragmentary sectional view.

Explanation of symbols

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

Claims (5)

  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 the heating air blower provided with the ion generating means comprising: a cover provided with an opening for allowing ions to pass through the ion outlet, and a protrusion provided on the back surface of the cover includes the ion A heating air blower characterized in that the cover is grounded via the counter electrode in contact with the counter electrode located on the cover side of the discharge electrode in the generating means.   2. 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 or 2, wherein the discharge port is located in front of the ion blowing port and the cover covers the outer periphery of the discharge port.   The heating blower according to claim 3, wherein the cover covers only the surface on the ion outlet side on the outer periphery of the outlet.   The heating air blower according to claim 3 or 4, wherein the cover is covered on an outer surface of a main body housing covering an air flow path from the suction port to the discharge port.

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