JP5011540B2 - Ion generator - Google Patents

Description

  The present invention relates to an ion generator that includes a discharge unit that emits electrons and a cooling unit. The ion generator of the present invention can be used by being incorporated in a hair treatment device such as a hair dryer, a hair blosser, a strator, a pet dryer, a skin care device, or the like.

  An ion generator related to the present invention is known, for example, from Patent Document 1. There, an electrode holder is fixed to a funnel-shaped air guide tube, and a central electrode and a peripheral electrode are arranged inside and outside the dielectric tube fixed to the electrode holder, and a corona discharge is generated between the two electrodes. The released electrons combine with oxygen molecules and water molecules to generate negative ions, and the generated negative ions can be delivered to the hair together with dry air.

  With respect to the ion generator of the present invention, moisture contained in the air is condensed by the cooling action of the Peltier element, and while the condensed water is heated and evaporated by the Peltier element, corona discharge is performed to generate negative ions toward the human body. It has been proposed to be able to feed them (see Patent Document 2).

Japanese Patent No. 35971234 (paragraph number 0031, FIG. 4) JP 2003-338355 A (paragraph number 0009, FIG. 1)

  In the ion generator of patent document 1, since the produced | generated ion is sent with dry wind, the mass of ion is small and the moisture content to send is small.

  In the ion generator of Patent Document 2, condensed water is generated by the cooling action of the Peltier element, and further, the emitted electrons are combined with water molecules obtained by evaporating the condensed water to generate negative ions. Negative ions can be generated regardless of seasonal differences. However, the dew condensation caused by the cooling effect of the Peltier element and the evaporation due to the heating action of the Peltier element are alternately generated to generate negative ions, so that negative ions cannot be continuously supplied and negative ions cannot be supplied when necessary. There is.

  The objective of this invention is providing the ion generator which can improve the moisture content which reaches | attains delivery objects, such as hair.

  The ion generator of the present invention includes a cooling unit 2 that cools ambient air and a discharge unit 3 that emits electrons, and emits electrons from the discharge unit 3 toward the air cooled by the cooling unit 2. And generating ions.

  A blower 79 that feeds ions toward a feeding target is provided. The discharge unit 3 and the cooling unit 2 are arranged close to each other in order from the windward side in the wind supply region generated by the blower 79.

  The blower 79, the discharge part 3, and the cooling part 2 are arrange | positioned inside the cylindrical ventilation case 70 provided with the suction inlet 72 and the blower outlet 74. FIG. The cooling unit 2 is disposed in the vicinity of the air outlet 74 of the blower case 70, and the discharge unit 3 is disposed on the windward side in the vicinity of the cooling unit 2.

  The discharge part 3 and the cooling part 2 are assembled to the frame 11 and combined as one unit, and the heat absorption part of the cooling part 2 is made to face the discharge space S of the discharge part 3.

  The cooling unit 2 includes a thermoelectric conversion element 30, a conductive plate 32 disposed on the heat absorption surface side of the thermoelectric conversion element 30, and a heat sink 31 for heat radiation disposed on the heat radiation surface side. The members 30, 31, and 32 constituting the cooling unit 2 are fastened and fixed to the first mounting portion 12 provided on the frame 11 via a seal rubber 38 that can be elastically deformed.

  The discharge unit 3 is composed of an electrode holder 41, a needle-like discharge electrode 42 attached to the center of the cylinder wall 47 of the electrode holder 41, and a cylindrical counter electrode 43 arranged around the cylinder wall 47. Turn into parts. The electrode holder 41 is attached to the second attachment portion 13 of the frame 11.

  A group of sharp protrusions 44 are formed along the discharge edge of the counter electrode 43 formed in a cylindrical shape.

  In the present invention, a cooling unit 2 that cools ambient air and a discharge unit 3 that emits electrons are provided, and electrons are emitted from the discharge unit 3 toward the air cooled by the cooling unit 2 to generate ions. Thus, the surrounding air is forcibly cooled by the cooling unit 2 to generate massive water molecules, which are combined with ion species such as oxygen molecules combined with the electrons generated by the discharge unit 3, Mass negative ions can be generated continuously. For example, when such a large mass of ions is fed toward the human body, the efficiency of supplying water molecules to the hair, scalp, or skin surface can be improved, and the delivery target can be kept moist. In addition, ions that are not large in mass may be generated between the discharge unit 3 and the ambient air of the cooling unit 2, but even in that case, the ions can be forcibly cooled, so The kinetic energy can be kept low. Therefore, in the process in which ions reach the object to be fed such as hair, the water amount that reaches the object to be fed is improved by preventing the water molecules constituting the ions from being dispersed.

  According to the ion generator including the blower 79 that feeds ions toward the feeding target, a large amount of ions can be transported toward the feed target by the wind generated by the blower 79, so that the ions are more Can be reliably delivered to far away.

  By arranging the blower 79, the discharge part 3, and the cooling part 2 inside the cylindrical blower case 70, the wind generated by the blower 79 is transferred and guided by the blower case 70, thereby improving the straightness of the wind. As a result, a large amount of ions can be more reliably transported toward the object to be fed. Further, by disposing the cooling unit 2 and the discharge unit 3 in the vicinity of the air outlet 74 of the air blowing case 70, ions are generated in the vicinity of the air outlet 74 of the air blowing case 70 and are sent to the object to be fed together with the wind. Since it can supply, the dissipation of the ion in the inside of the ventilation case 70 can be suppressed, and the amount of ions which can be delivered can be increased.

  According to the ion generating apparatus in which the discharge unit 3 and the cooling unit 2 are assembled to the frame 11 and combined as one unit, and the heat absorption part of the cooling unit 2 is exposed to the discharge space S of the discharge unit 3, the discharge unit 3 and the cooling unit 2 can always be in a constant positional relationship, so that the binding of the massive water molecules generated in the cooling unit 2 and the ionic species generated in the discharge unit 3 is promoted, so Can be generated effectively. In addition, by integrating the discharge unit 3 and the cooling unit 2 with the frame 11 as a single unit, for example, compared with a case where the components of the discharge unit 3 and the cooling unit 2 are individually assembled with respect to the attachment target. Assembling work can be performed easily and accurately. An operation check test can be performed in a state in which each component is incorporated in the frame 11, and an operation failure of each component can be found at an early stage, so that a subsequent response when the failure occurs can be simplified.

  According to the ion generator that fastens and fixes the thermoelectric conversion element 30, the conductive plate 32, the heat sink 31, and the like constituting the cooling unit 2 to the first mounting unit 12 provided on the frame 11 via the elastically deformable seal rubber 38. By elastically deforming the seal rubber 38, it is possible to absorb the dimensional error of each component and the variation in the fastening force by the screw 39, and to properly assemble each component to the frame 11. Therefore, the cooling unit 2 The ambient air can be cooled in a stable state.

  According to the ion generator in which the discharge part 3 is unitized by the electrode holder 41, the needle-like discharge electrode 42, and the cylindrical counter electrode 43, the electrode holder 41 is attached to the second attachment part 13 of the frame 11. The electrodes 42 and 43 can be properly assembled with a minimum of effort only for fixing. By checking the discharge state at the time when the discharge electrode 42 and the counter electrode 43 are assembled to the electrode holder 41, there is also an advantage that the quality of the discharge state can be verified in advance.

  According to the ion generator in which a group of sharp projections 44 are formed along the discharge edge of the cylindrical counter electrode 43, the discharge arc is concentrated at the tip portion of each sharp projection 44 and the corona discharge is stabilized. The amount of ions generated can be increased by eliminating the variation in the discharge state.

(Example) FIG. 1 thru | or FIG. 6 shows the Example of the ion generator which concerns on this invention. In FIG. 2, the ion generating apparatus includes a power supply unit 1 and a drive unit 4 including a cooling unit 2 and a discharge unit 3. The power supply unit 1 is composed of two systems: a drive circuit 5 for the cooling unit 2 and a high voltage generation circuit 6 that supplies a high-voltage pulse current to the discharge unit 3.

  1 and 3, the drive unit 4 has a frame 11 as a base, the cooling unit 2 mounted on the front first mounting unit 12, and the discharge unit 3 mounted on the second mounting unit 13 on the rear side. To do. The first mounting portion 12 is formed in a square frame shape, has a concave portion 15 for accommodating the components of the cooling portion 2 at the center thereof, and opens a cooling port 16 on the bottom wall of the concave portion 15 to cool the first mounting portion 12. A seal groove 17 is formed to be recessed so as to surround the upper opening of the mouth 16. Four screw bosses 18 for fastening a heat sink 31, which will be described later, and two fastening seats 19 for fixing the drive unit 4 are bulged on the left and right sides of the upper edge of the recess 15. The lower surface side of the previous cooling port 16 is covered with a pair of left and right side walls 20 that reach the second mounting portion 13 from the first mounting portion 12 and a bottom wall 21 of the first mounting portion 12 that connects both side walls 20. .

  The 2nd mounting part 13 is formed in the pocket shape which the upper surface and the front surface open by the side wall 20 of the front, and the curved wall 23 which covers the rear end and rear part side lower side of the both side wall 20. FIG. As shown in FIG. 5, the curved wall 23 bulges downward from the side wall 20 and also serves as a windshield cover, and only the front and the lower side by the three sides of the side wall 20, the bottom wall 21, and the curved wall 23. The discharge space S is released (see FIG. 1). The endothermic surface of the cooling unit 2 is arranged facing the discharge space S. A notch 24 for introducing a lead wire is formed at the upper edge of both side walls 20 facing the second mounting portion 13.

  As shown in FIG. 3, the cooling unit 2 mainly includes a rectangular Peltier element (thermoelectric conversion element) 30, a heat sink (heat radiator) 31, a heat transfer plate 32, an element holder 36 that holds the Peltier element 30, and the like. It is configured as a constituent member. The heat sink 31 is made of an aluminum strip having six radiating fins 33 on the upper surface, and a pair of front and rear fastening seats 34 are formed on the front side of the left and right side surfaces. The lower surface side of the heat sink 31 is formed flat. The heat transfer plate 32 is formed by punching an aluminum plate, and is provided to conduct the cold heat of the Peltier element 30 over a wider area. In this embodiment, the heat transfer plate 32 becomes the heat absorption part of the cooling unit 2, but when the heat transfer plate 32 is omitted, the heat absorption surface of the Peltier element 30 becomes the heat absorption part.

  The Peltier element 30 is a commercially available product, and is assembled to the square frame-shaped element holder 36 with its upper surface side serving as a heat dissipation surface and its lower surface side serving as a heat absorption surface, and then a heat transfer sheet 37 is attached to each of the heat dissipation surface and the heat absorption surface. Attached. The heat transfer sheet 37 is formed by coating silicon on both sides of the aluminum sheet, and has both thermal conductivity and electrical insulation. After a square frame-like seal rubber 38 is fitted into the seal groove 17 of the first mounting portion 12, the heat transfer plate 32 and the element holder 36 including the heat transfer sheet 37 are loaded into the recess 15, and the heat sink 31 is further attached to the frame. Each component is integrated with the frame 11 by fastening with four screws 39 to 11 (see FIG. 5).

  As described above, when each member is fastened with the screw 39 via the seal rubber 38, the seal rubber 38 is elastically deformed, thereby absorbing the dimensional error of each member and the error of the fastening force due to the screw 39, and each heat transfer. The degree of adhesion between members can be improved. The heat transfer sheet 37 and the heat transfer plate 32 are provided to increase the cooling area. Reference numeral 29 denotes a lead wire connected to the Peltier element 30.

  The discharge unit 3 includes an electrode holder 41 formed of an insulating plastic material, a discharge electrode 42 and a counter electrode 43 assembled to the electrode holder 41, and the like. As shown in FIG. 1, the electrode holder 41 includes a stepped upper wall 45, a vertical wall 46 provided on the lower surface of the stepped portion of the upper wall 45, and a pair of left and right protruding from the front and rear surfaces of the vertical wall 46. The cylindrical walls 47 and 48 are integrally provided. The discharge electrode 42 is made of a metal wire whose tip is sharpened like a needle, and is arranged in the center of the bottom of the cylindrical wall 47 on the front side so as to penetrate the front vertical wall 46 in the front-rear direction. 47.

  As shown in FIG. 6, the counter electrode 43 is formed of a press-formed product made of a copper plate or a steel plate, and is attached to the peripheral surface proximal ends of the left and right cylindrical walls 47. A group of sharp protrusions 44 are formed on the front edge of the cylinder wall of the counter electrode 43 in order to maintain corona discharge in a stable state. Lead wires 49 and 50 are connected to the discharge electrode 42 and the counter electrode 43, respectively, but in order to avoid abnormal discharge, the connection portion between the discharge electrode 42 and the lead wire 49 is accommodated in the rear cylindrical wall 48. It is sealed with an insulating sealing material 51 (see FIG. 1).

  The discharge part 3 configured as described above is fitted into the second mounting part 13 from above and integrated with the frame 11. When the heat sink 31 is attached to the frame 11, the discharge unit 3 integrated with the frame 11 comes into contact with the lower surface of the rear part of the heat sink 31 and the upper surface of the electrode holder 41. Fixed and held inseparable. In this assembled state, the front portion of the upper wall 45 is continuous with the bottom wall 21 of the first mounting portion 12, and the front cylindrical wall 47 faces the discharge space S directly below the cooling port 16. Therefore, when a high voltage current is supplied between the discharge electrode 42 and the counter electrode 43, electrons are emitted into the discharge space S by corona discharge. Oxygen molecules present in the discharge space S combine with electrons to form ionic species (negatively charged molecular species). At this time, the heat transfer plate 32 of the cooling unit 2 faces the discharge space S in order to generate water molecules to which ionic species are bonded in a lump and generate large mass negative ions.

  In FIG. 2, the drive circuit 5 for the cooling unit 2 includes a rectifier circuit 54 for full-wave rectification of commercial AC current, a smoothing circuit 55 for smoothing the rectified current, and a DC current (100 V) smoothed by the smoothing circuit 55. ) Is adjusted to a DC current of 3V (1A).

  The high voltage generation circuit 6 includes a rectification circuit 58 that half-wave rectifies commercial alternating current (100 V), a pulse generation circuit 59 that converts the rectified current into a pulse current, and a transformer 60 that uses the pulse current as a high voltage pulse. And a diode 61 provided between the transformer 60 and the discharge unit 3. The rectifier circuit 58, the pulse generation circuit 59, the transformer 60, and the diode 61 are embedded in the resin mold 62 and are combined as one unit. If the circuit configuration is such that the diode 61 is inverted, positive ions can be generated.

  The ion generator configured as described above is incorporated in a hair dryer, for example, as shown in FIGS. 7 to 10, and feeds negative ions together with dry air during hair drying or hair styling. In FIG. 7, the hair dryer has a hollow cylindrical main body case (blower case) 70 that is long on the left and right sides, and a grip 71 provided on the rear side of the lower surface of the main body case 70, and a suction port 72 at the rear end of the main body case 70. A suction grill 73 is provided at the front end, and a blowout grill 75 is provided at a blowout port 74 at the front end of the main body case 70. A ventilation path 78 is provided inside the main body case 70, and an axial-flow type blower fan (blower device) 79, a motor 80 for the blower fan 79, and a heater unit 81 are accommodated therein. The wind generated by the blower fan 79 becomes a dry wind used for drying hair, and a part of the wind is a negative ion carrying air generated between the ambient air of the cooling unit 2 and the discharge unit 3. .

  A sub-air passage 82 is provided above the air passage 78, and the sub-air passage 82 and the air passage 78 are separated by a partition wall 83. Inside the auxiliary ventilation path 82, a part of the normal temperature dry air supplied from the blower fan 79 is introduced from the ventilation opening 84 and is discharged out of the case from the ventilation outlet 85 on the upper surface of the front part. By assembling the drive unit 4 of the ion generator to the partition wall 83, the heat sink 31 faces the secondary ventilation path 82, and the discharge space S faces the ion path 86 partitioned on the air outlet 74 side of the ventilation path 78. As shown in FIG. 9, the drive unit 4 is integrated with the main body case 70 by fastening the left and right fastening seats 19 of the frame 11 to the partition wall 83 with screws 26.

  First and second switch knobs 89 and 90 for switching the operating state of the blower fan 79 and the heater unit 81 are disposed on the front and rear surfaces of the grip 71. The first switch knob 89 can be slid upwardly in three stages in the order of cold air, low temperature air, and high temperature air from the off position at the lower end, and the second switch knob 90 includes a lower off position and an upper turbo position. Can be switched to. The rectifier circuit 54 and the smoothing circuit 55 described above are incorporated in the grip 71, and the DC-DC converter circuit 56 and the resin mold 62 are incorporated on the upper surface of the rear part of the main body case 70. A heat shielding plate 92 is disposed between the ion generator and the heater unit 81. Thus, by providing the heat shield plate 92, the heat shield plate 92 can block the radiant heat radiated from the heater unit 81.

  8 and 9, a heater unit 81 includes a heater substrate 94 made of an insulating plate assembled in a cross shape, a heater wire 95 made of a nichrome wire spirally wound around the heater substrate 94, a heater substrate 94, A heater cylinder 96 that covers the periphery of the heater wire 95 and a control resistor attached to the plate surface of the heater substrate 94 are configured. The heater cylinder 96 is formed into a front tapered taper shape by an insulating cylinder on the inner surface and a reinforcing cylinder made of a thin steel plate covering the outer surface of the insulating cylinder, and an opening 97 for assembling the ion generating device at the front part of the upper surface. Is cut out, and a previous opening 84 is opened at the rear of the upper surface.

  In order to avoid negative ions generated by the ion generator from being heated by the heat of the heater unit 81 as much as possible, the heater winding center Q is displaced downward from the passage center P of the ventilation path 78. They are offset (see FIG. 9). In addition, the number of turns of the heater wire 95 in the upper half of the heater substrate 94 is made smaller than the number of turns of the heater wire 95 in the lower half of the heater substrate 94.

  As shown in FIG. 8, in this embodiment, the groove depth of the holding groove 99 into which the heater wire 95 is fitted is formed deep on the upper half side of the vertical heater substrate 94 and shallow on the lower half side, thereby The winding center Q is shifted downward from the passage center P of the ventilation path 78 so that the total length of the heater wire 95 exposed on the upper half side is shorter than the total length of the heater wire 95 exposed on the lower half side. I made it. When the number of turns of the heater wire 95 on the upper half side of the vertical heater substrate 94 is 6, the number of turns of the heater wire 95 on the lower half side is set to 7. That is, the number of turns of the heater wire 95 on the upper half side of the heater unit 81 is made smaller than the number of turns of the heater wire 95 on the lower half side, and the generated heat amount and the radiant heat amount of the upper half portion of the heater unit 81 are reduced. The amount of heat generated and the amount of radiant heat in the half can be suppressed.

  The heat shield plate 92 is formed of a mica plate, and is arranged along the spiral outline of the heater wire 95 in a state orthogonal to the vertical heater substrate 94 as shown in FIG. It is fixed to the heater substrate 94 via a fixing bracket 100. The horizontal width dimension of the heat shield plate 92 is substantially the same as the horizontal width of the frame 11 and is set smaller than the spiral diameter of the heater wire 95. Thus, the heat shield plate 92 only partitions a part of the space of the ventilation path 78 in the vertical direction, and does not have a function of a partition wall for separating and separating the passage.

  By adopting the above heater structure, the discharge unit 3 and the cooling unit 2 of the ion generator are positioned inside the ventilation path 78 farthest from the heater unit 81, and along the discharge unit 3 and the cooling unit 2. The temperature of the flowing dry air can be maintained at a low temperature compared to the temperature of the dry air flowing along other portions.

  At the time of use, the first switch knob 89 is slid to any one of cold air, low temperature air, and high temperature air to activate the motor 80 and rotationally drive the blower fan 79. In the low-temperature air and high-temperature air modes, the heater wire 95 is energized to heat the dry air supplied from the blower fan 79. At the same time, the ion generator and the cooling device are activated to generate negative ions, and the cold energy is released by the Peltier element 30. Actually, the Peltier element 30 absorbs the heat of the air in the peripheral portion.

  The main stream of the dry air flowing in the ventilation path 78 is heated by the heater unit 81 and blown out from the air outlet 74, but part of the dry air enters the sub-air ventilation path 82 from the air outlet 84 and radiates heat from the heat sink 31. The heat sink 31 is cooled in contact with the fins 33. A part of the drying air is blown out through the ion passage 86 together with the negative ions generated between the air around the cooling unit 2 and the discharge unit 3. At this time, since the windward side of the discharge part 3 is covered with the curved wall 23, the dry air can only flow into the ion passage 86 while wrapping around the curved wall 23 and the discharge part 3, and therefore downstream of the curved wall 23. The air staying in the discharge space S, particularly the air in the space inside the cooling port 16 adjacent to the heat transfer plate 32 is effectively cooled by the heat transfer plate 32, and large massive water molecules are generated in the surrounding air of the heat transfer plate 32. Can be generated. Electrons are emitted from the discharge unit 3 toward the air around the heat transfer plate 32.

  Specifically, the amount of saturated water vapor in the air staying in the discharge space S due to the cold heat of the Peltier device 30 can be reduced, and at the same time, the thermal kinetic energy can be kept low to make the water molecules large. The water molecules in the lump state are combined with ion species such as oxygen molecules combined with the electrons generated in the discharge part 3 to become large negative ions. This negative ion is a negative ion having a large number of water molecules in a state where water molecules are bound in the shape of a bunch of grapes around the ion species, and is generated by an ion generator that does not have a normal cooling unit. Mass is larger than. In other words, the generated negative ions are sent out through the ion passage 86, but the binding partner of the ion species is a massive water molecule compared to the normal negative ions, so the lifetime is long and it is difficult to dissipate in the air. Therefore, the amount of ions that can reach the hair is improved, and the hair can be kept moist. Further, since the ambient air is forcibly cooled by the heat absorbing action of the heat transfer plate 32, negative ions can be continuously generated regardless of the ambient temperature condition. Since the discharge unit 3 and the blower fan (blower device) 79 are driven while the cooling unit 2 is being driven, ions having a large mass or cooled can be continuously generated and fed to the feed target. A large mass of water molecules is a gas and is different from a mist droplet.

  The discharge unit 3 is arranged at a position close to the windward side of the cooling unit 2, and water molecules that are cooled by the cooling unit 2 to form a large lump are combined with ionic species combined with electrons generated in the discharge unit 3. Therefore, as compared with the case where the discharge part 3 and the cooling part 2 are arranged in reverse, the contact opportunity between the ion species and the water molecules increases, and the amount of ions that can be generated can be increased accordingly. Since the ambient air around the cooling unit 2 is cooled and the relative humidity is increased, the opportunity for contact between the ionic species and water molecules is further increased. In addition, ions that are not large in mass may be generated between the discharge unit 3 and the ambient air of the cooling unit 2, but even in that case, the ions can be forcibly cooled, so The kinetic energy can be kept low. Therefore, in the process in which ions reach the object to be fed such as hair, the water amount that reaches the object to be fed is improved by preventing the water molecules constituting the ions from being dispersed.

  The heat sink 31 does not need to be formed with the aluminum strip described in the embodiment, and can be configured with a copper strip. In addition, the heat dissipating part of the heat sink 31 does not have to have a fin structure. In particular, when heat is forcibly dissipated by using a cooling fan only, the heat exchanging part should be composed of a simple uneven body. Can do. The heat exchanging portion can be replaced with a fin structure to have a honeycomb structure. A typical example of the thermoelectric conversion element is the Peltier element 30, but “rare earth filled skutterudite” can be applied instead of the Peltier element. The rare earth-filled skutterudite is made of an artificial compound having a structure in which one samarium atom is confined in a cage composed of 12 antimony atoms.

  The ion generator of the present invention can be applied to a hair blosser in which a hair brush is attached to the air outlet of the main body case that also serves as a grip, a hair treatment device such as a strator, a pet dryer, and a skin care device. . Moreover, the structure of the discharge part 3 does not need to be the structure demonstrated in the Example, and can be variously changed as needed, such as arrange | positioning a pair of acicular electrode facing.

  The heater substrate 94 in the above embodiment does not need to be configured by combining two substrates in a cross shape, and can be configured by combining three substrates in a US shape. In the above embodiment, the heater wire 95 is arranged so as to draw a perfect circle around the heater winding center Q, but this is not necessary. For example, the radius of curvature of the upper half of the heater wire 95 is made smaller than the radius of curvature of the lower half, and the region of the dry air heated by the heater unit 81 is concentrated on the lower half side of the air passage 78 to perform thermoelectric conversion. The cooling effect by the element 55 can be improved. The heater wire 95 can be arranged so as to draw an ellipse with the ellipse long axis extending left and right, and the heater winding center Q can be positioned below the passage center P of the air passage 78.

It is a vertical side view of an ion generator. It is a block diagram which shows the outline of an ion generator. It is a disassembled perspective view of an ion generator. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a disassembled perspective view of a discharge part. It is a vertical side view of the state which applied the ion generator to the hair dryer. 7 is an enlarged cross-sectional view of the main part. It is CC sectional view taken on the line in FIG. It is a cross-sectional top view which shows the internal structure of a sub ventilation path.

Explanation of symbols

2 Cooling unit 3 Discharge unit 5 Drive circuit 6 High voltage generation circuit 11 Frame 12 First mounting unit 13 Second mounting unit 30 Thermoelectric conversion element 31 Heat sink 32 Conductive plate 38 Seal rubber 41 Electrode holder 42 Discharge electrode 43 Counter electrode 44 Sharp projection 47 Tube wall 70 of electrode holder Blower case 72 Suction port 74 Blowout port 79 Blower S Discharge space of discharge part

Claims (6)

A cooling section (2) for cooling the surrounding air and a discharge section (3) for emitting electrons,
A discharge part (3) is formed around the electrode holder (41), the needle-like discharge electrode (42) attached to the center of the cylinder wall (47) of the electrode holder (41), and the cylinder wall (47). A cylindrical counter electrode (43) disposed,
A group of sharp protrusions (44) are formed along the discharge edge of the counter electrode (43) formed in a cylindrical shape,
An ion generating apparatus that emits electrons from the discharge unit (3) toward the air cooled by the cooling unit (2) to generate ions. It is equipped with a blower (79) that feeds ions toward the feed target,
The ion generator according to claim 1, wherein the discharge part (3) and the cooling part (2) are arranged close to each other in order from the windward side in a wind feeding region generated by the blower (79). A blower (79), a discharge part (3), and a cooling part (2) are arranged inside a cylindrical blower case (70) having a suction port (72) and a blower outlet (74). And
The cooling part (2) is arranged facing the air outlet (74) of the blower case (70), and the discharge part (3) is arranged on the windward side near the cooling part (2). The ion generator as described. The discharge part (3) and the cooling part (2) are assembled to the frame (11) and combined as one unit,
The ion generator according to any one of claims 1 to 3, wherein the endothermic part of the cooling part (2) faces the discharge space (S) of the discharge part (3). The cooling unit (2) includes a thermoelectric conversion element (30), a conductive plate (32) disposed on the heat absorbing surface side of the thermoelectric conversion element (30), and a heat sink for heat dissipation ( 31), and
Each of the members (30, 31, 32) constituting the cooling unit 2 is fastened and fixed to a first mounting portion (12) provided on the frame (11) via a seal rubber (38) that can be elastically deformed. Item 5. The ion generator according to Item 4. A discharge part (3) is formed around the electrode holder (41), the needle-like discharge electrode (42) attached to the center of the cylinder wall (47) of the electrode holder (41), and the cylinder wall (47). It is unitized with a cylindrical counter electrode (43) to be arranged,
The ion generator according to claim 4 or 5, wherein the electrode holder (41) is mounted on the second mounting portion (13) of the frame (11).

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