JP4410309B2 - Hair dryer - Google Patents

Description

  The present invention relates to an ion generator and a hair dryer including a cooling device that reduces the thermal kinetic energy of ions.

  With respect to the present invention, a hair dryer provided with an ion generator is known, for example, from US Pat. There, an electrode holder is fixed to a funnel-shaped air guide tube provided at the center of the blow grill, and a central electrode and surrounding electrodes are arranged inside and outside the dielectric tube fixed to the electrode holder, and a corona discharge is provided between the two electrodes. The electrons released into the air combine with oxygen molecules and water molecules to generate negative ions, and the generated negative ions are blown onto the hair together with dry air.

  Regarding the hair dryer of the present invention, in Patent Document 2, a cold air passage is provided separately from a hot air passage heated by a heater, and an ion generator is disposed in the cold air passage to reduce the temperature of the ionized water molecules. To prevent the disappearance of negative ions sprayed on the hair. In addition, the moisture contained in the air is condensed by the cooling effect 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, which can be sent toward the human body. An anion generator has been proposed (see Patent Document 3).

Japanese Patent No. 3591723 (paragraph number 0031, FIG. 4) Japanese Patent Laying-Open No. 2004-208935 (paragraph numbers 0019 to 0022, FIG. 1) JP 2003-338355 A (paragraph number 0009, FIG. 1)

  According to the hair dryer of Patent Document 2, the temperature of ionized water molecules can be kept at a low temperature, and the disappearance of negative ions sprayed on the hair can be prevented to some extent. However, when the ambient temperature is high, it is difficult to keep the temperature of ionized water molecules at a low temperature, and there is a problem in that the effect of preventing the disappearance of negative ions cannot be exhibited regardless of the ambient temperature. Further, in the negative ion generation device of Patent Document 3, since dew condensation due to the cooling effect of the Peltier element and evaporation due to the heating effect of the Peltier element are alternately performed, negative ions cannot be continuously supplied and are negative when necessary. Ion cannot be delivered.

  The purpose of the present invention is to forcibly reduce the temperature of ions generated by an ion generator and maintain their thermal kinetic energy at a low level, thereby suppressing the dissipation of ions and improving the amount of ions that can reach the hair. The object of the present invention is to provide a hair dryer capable of maintaining hair in a moist state. In addition, an object is to provide a hair dryer that can continuously lower the temperature of ions regardless of the surrounding temperature conditions.

  In the hair dryer of the present invention, the blower fan 15 and the heater unit 17 are arranged inside the main body case 1. A cooling device for cooling the ions generated by the ion generator is provided. The ion generator includes a discharge unit 33, and the cooling device includes a thermoelectric conversion unit 51 having an endothermic portion 51A.

  The blower fan 15 and the heater unit 17 are disposed inside a ventilation path 18 provided in the main body case 1. The heat absorption part 51A of the thermoelectric conversion part 51 of the cooling device faces the ventilation path 18, and the discharge part 33 of the ion generator is arranged close to the heat absorption part 51A of the thermoelectric conversion part 51.

The heater unit 17 includes a heater substrate 26 and a heater wire 27 wound around the heater substrate 26 . The heater unit 17 is configured such that the amount of heat generated in one half of the heater wire 27 facing the thermoelectric converter 51 is smaller than the amount of heat generated in the other half of the heater wire 27.

  A sub ventilation path 19 is provided separately from the ventilation path 18 in which the blower fan 15 and the heater unit 17 are arranged. The heat radiating body 56 constituting the thermoelectric conversion part 51 is made to face the auxiliary ventilation path 19.

  A vent 23 for introducing a part of the dry air before heating supplied from the blower fan 15 to the ventilating path 18 is opened to the sub ventilating path 19, and the sub ventilating path on the downstream side of the radiator 56 of the thermoelectric converter 51 is opened. The air exhaust port 24 is opened at 19.

  The auxiliary ventilation path 19 is configured such that the passage sectional area gradually decreases from the vicinity of the vent 23 to the vicinity of the radiator 56.

  In the hair dryer of this invention, the ventilation fan 15 and the heater unit 17 were arrange | positioned inside the main body case 1, and the ion produced | generated with the ion generator could be forcedly cooled with a cooling device.

  By forcibly cooling by the cold heat of the cooling device, the ions are maintained in a low thermal kinetic energy state. Therefore, in the process of ions reaching the hair, the water molecules that make up the ions are prevented from being dispersed, the amount of water reaching the hair is improved, and the hair can be maintained in a moist state. Compared to the hair styling effect. In addition, since the cooling device forcibly cools the ions or water molecules before being ionized, for example, even if the ambient temperature is high, the thermal kinetic energy state of ions can be reliably maintained at a low level. The cooling function can be continuously exhibited as necessary when necessary, and the inevitable restrictions in the conventional apparatus that alternately performs condensation and heating and evaporation of condensed water can be eliminated.

  The endothermic part 51A of the thermoelectric conversion part 51 of the cooling device faces the ventilation path 18, and the discharge part 33 of the ion generator is arranged close to the endothermic part 51A of the thermoelectric conversion part 51, whereby the ion ventilation path 18 is made to flow. It can be reliably delivered to the hair by the flowing action of the flowing dry air. Since the ions are supplied together with the dry air flowing through the ventilation path 18, the ions can be simultaneously sprayed on the hair simply by perceiving that the dry air is being sprayed on the head. For example, the ions are separated from the dry air. Compared to the case of feeding, it is advantageous in that hair processing can be performed without being aware of the ion feeding position.

  The heater unit 17 is composed of the heater substrate 26 and the heater wire 27 wound around the heater substrate 26, and the amount of heat generated in one half of the heater wire 27 facing the thermoelectric converter 51 is on the other side of the heater wire 27. If the heater unit 17 is configured to be smaller than the heat generated in the half, the temperature of the drying air flowing around the thermoelectric converter 51 can be lowered by the amount that the heat generated in the heater wire 27 can be reduced. Even when performing the above, water molecules contained in the ambient air of the thermoelectric converter 51 can be more effectively cooled. In addition, in order to make the generated heat amount of one side half part smaller than the generated heat amount of the other side half part, for example, it can be realized by changing the number of windings of the heater wire 27 in the one side half part and the other side half part, or This can be realized by making the winding shape of the heater wire 27 different between the one half and the other half, and making the total exposed length of the heater wire 27 in each half different.

  If the auxiliary ventilation path 19 is provided separately from the ventilation path 18 for arranging the blower fan 15 and the heater unit 17, and the radiator 56 of the thermoelectric converter 51 faces the auxiliary ventilation path 19, the auxiliary ventilation path 19 is provided. It is possible to effectively cool the radiator 56 by exchanging heat between the room temperature air and the radiator 56, and to improve the cooling efficiency of the thermoelectric conversion element 55 constituting the cooling device.

  A vent 23 is opened in the ventilation path 18, a vent 24 is opened in the sub-ventilation path 19 on the downstream side of the radiator 56 of the thermoelectric converter 51, and the dry air before heating supplied from the blower fan 15 is sent. If a part can be introduced into the auxiliary ventilation path 19 through the previous vent 23, the drying air before heating is continuously and forcibly supplied to the auxiliary ventilation path 19 so that the heat dissipation action by the radiator 56 is achieved. Further, the cooling efficiency of the thermoelectric conversion element 55 constituting the cooling device can be further improved.

  When the passage cross-sectional area of the sub-ventilation passage 19 is gradually reduced from the vicinity of the vent 23 to the vicinity of the radiator 56, the flow velocity of the dry air introduced from the vent 23 can be increased as it approaches the radiator 56. Can increase the chance of contact with the dry air, quickly remove the heat released from the radiator 56, promote the heat dissipation action of the radiator 56, and further improve the cooling efficiency of the thermoelectric conversion element 55 constituting the cooling device it can.

It is a vertical side view of a hair dryer. It is a disassembled perspective view of a main-body part. It is a vertical side view which shows a cooling device and a discharge part. It is the sectional view on the AA line in FIG. It is a block diagram which shows the outline of an ion generator and a cooling device. It is a disassembled perspective view of a discharge part. It is a disassembled perspective view of a thermoelectric conversion part. It is a cross-sectional top view which shows the internal structure of a sub ventilation path. It is arrangement | positioning explanatory drawing which shows another Example of a hair dryer. It is arrangement | positioning explanatory drawing which shows another Example of a hair dryer. It is arrangement | positioning explanatory drawing which shows another Example of a hair dryer. It is arrangement | positioning explanatory drawing which shows another Example of a hair dryer.

  (Example) FIGS. 1-5 shows the Example of the hair dryer which concerns on this invention. In FIG. 1, the hair dryer has a hollow cylindrical main body case 1 that is long on the left and right sides, and a grip 2 provided on the rear side of the lower surface of the main body case 1, and a suction grille at the suction port 1 a at the rear end of the main body case 1. 3 and an outlet grill 4 is provided at the outlet 1b at the front end of the main body case 1. First and second switch knobs 5 and 6 for switching operating states of the blower fan 15 and the heater unit 17 are disposed on the front and rear surfaces of the grip 2. The first switch knob 5 can be slid upward and downward in the order of cold air, low-temperature air, and high-temperature air from the lower end off position, and the second switch knob 6 includes a lower off position and an upper turbo position. Can be switched to.

  As shown in FIG. 2, the main body case 1 includes a main case 8 composed of divided cases 8 a and 8 b that are divided into left and right, an upper cover 9 that covers the upper surface of the joint portion of the main case 8, and the main case 8. It includes a spacer 10 and a front case 11 incorporated at the front end, a rear case 12 incorporated at the rear end of the main case 8, and the like. As shown in FIG. 1, a ventilation path 18 is provided inside the main body case 1, and an axial flow type blower fan 15, a motor 16 for the blower fan 15, and a heater unit 17 are accommodated therein. Further, a sub-air passage 19 is provided in the upper part of the air passage 18, and an ion generator and a cooling device are accommodated therein.

  The ventilation path 18 is configured by a fan case 22 disposed facing the suction grill 3 at the rear end, and a heater cylinder 28 continuing to the fan case 22. The previous blower fan 15 and the motor 16 are assembled to the fan case 22. In order to introduce a part of the dry air sent from the blower fan 15 into the sub-ventilation passage 19, a vent 23 is opened on the upper surface near the rear part of the heater cylinder 28, and a vent 24 is formed on the upper part of the front case 11. It is open. The sub-air passage 19 is partitioned between the upper wall 9 and a partition wall 20 that is opposed to the upper inner surfaces of the left and right divided cases 8a and 8b. It is partitioned by a heater cylinder 28 or the like.

  The heater unit 17 includes a heater substrate 26 made of an insulating plate assembled in a cross shape, a heater wire 27 made of a nichrome wire spirally wound around the heater substrate 26, and the periphery of the heater substrate 26 and the heater wire 27. The heater cylinder 28 is covered, and the control resistor is mounted on the plate surface of the heater substrate 26. The heater cylinder 28 is formed into a front tapered taper shape with an insulating cylinder on the inner surface and a reinforcing cylinder made of a thin steel plate that covers the outer surface of the insulating cylinder, and a discharge portion 33 of an ion generator to be described later on the upper front portion thereof. And an opening 29 for assembling the thermoelectric conversion part 51 of the cooling device is formed in a cutout, and the previous through-hole 23 is opened at the rear part of the upper surface.

  In order to avoid negative ions (ions) generated by the ion generator from being heated by the heat of the heater unit 17 as much as possible, the heater winding center Q is displaced downward from the passage center P of the ventilation path 18. It is arranged so as to be biased. In addition, the number of turns of the heater wire 27 in the upper half of the heater substrate 26 is made smaller than the number of turns of the heater wire 27 in the lower half of the heater substrate 26. Further, a heat shield plate 90 is disposed between the ion generator and thermoelectric converter 51 and the heater unit 17 so that the radiant heat radiated from the heater wire 27 can be blocked by the heat shield plate 90.

  As shown in FIG. 3, in this embodiment, the groove depth of the holding groove 31 into which the heater wire 27 is fitted is formed deeper on the upper half side of the vertical heater substrate 26 and shallower on the lower half side. The winding center Q is shifted downward from the passage center P of the ventilation path 18 so that the overall length of the heater wire 27 exposed on the upper half side is shorter than the overall length of the heater wire 27 exposed on the lower half side. I made it. When the number of turns of the heater wire 27 on the upper half side of the vertical heater substrate 26 is 6, the number of turns of the heater wire 27 on the lower half side is set to 7. That is, the number of turns of the heater wire 27 on the upper half side of the heater unit 17 is made smaller than the number of turns of the lower half side heater wire 27 to reduce the generated heat amount and the radiant heat amount of the upper half portion of the heater unit 17. The amount of heat generated and the amount of radiant heat in the half can be suppressed. The heat shield plate 90 is formed of a mica plate, and is disposed along the spiral outline of the heater wire 27 in a state orthogonal to the vertical heater substrate 26 as shown in FIG. It is fixed to the heater substrate 26 via a fixture 91. The horizontal width dimension of the heat shield plate 90 is substantially the same as the horizontal width of the holder 57 and is set smaller than the spiral diameter of the heater wire 27. Thus, the heat shield plate 90 only partitions a part of the space of the ventilation path 18 in the vertical direction, and does not have a function of a partition wall that separates and separates the passage.

  By adopting the above heater structure, the discharge unit 33 of the ion generator and the thermoelectric conversion unit 51 of the cooling device are positioned inside the ventilation path 18 farthest from the heater unit 17, and the discharge unit 33 and the thermoelectric conversion are arranged. The temperature of the drying air flowing along the part 51 can be maintained at a low temperature as compared with the temperature of the drying air flowing along other portions.

  5 and 6, the ion generator includes a discharge unit 33 and a high voltage generation unit 34 that supplies a high-voltage pulse to the discharge unit 33. The discharge part 33 includes an electrode holder 35 formed of an insulating plastic material, a discharge electrode 37 assembled at the center of a pair of left and right cylinder walls 36 provided on the electrode holder 35, and the periphery of the base end of each cylinder wall 36. It is comprised with the cylindrical counter electrode 38 assembled | attached to. The discharge electrode 37 is made of a metal wire whose tip is sharpened like a needle, and the counter electrode 38 is made of a copper plate or a steel plate made of a copper plate or a steel plate with a group of sharp protrusions 40 formed along the front edge of the cylinder wall. It consists of goods. On the windward side of the electrode holder 35, that is, on the rear side, a windbreak cover 39 that blocks the flow of the drying wind is disposed (see FIG. 3). By providing the wind shielding cover 39 in this way, it is possible to prevent the negative ions generated in the discharge part 33 from being blown off by the dry air, and the dry air containing the negative ions can be reliably cooled by the cooling device.

  The high voltage generator 34 includes a rectifier circuit 43 that rectifies commercial alternating current (100 V) by half-wave, a pulse generator circuit 44 that converts the rectified current into a pulse current, and a transformer 45 that uses the pulse current as a high voltage pulse. And a diode 46 provided between the transformer 45 and the discharge unit 33. The rectifier circuit 43, the pulse generation circuit 44, the transformer 45, and the diode 46 are embedded in the resin mold 47 and combined as one unit. As shown in FIG. 1, the resin mold 47 is disposed at the rear end of the auxiliary ventilation path 19, and is clamped and fixed between the upper cover 9, the rear case 12, and the fan case 22.

  In FIG. 5, the cooling device includes a thermoelectric conversion unit 51 assembled in the opening 29 of the auxiliary ventilation path 19, and first and second drive circuits 52 and 53 arranged in the grip 2 and in the rear part of the auxiliary ventilation path 19. And consist of As shown in FIG. 7, the thermoelectric conversion unit 51 mainly includes a Peltier element (thermoelectric conversion element) 55, a heat sink (heat radiator) 56, a holder 57 fastened and fixed to the main case 8, and a heat transfer plate 64. It is configured as a constituent member. The holder 57 is made of a plastic molded product integrally including a front mounting portion 57a to which the Peltier element 55 and the heat sink 56 are mounted, and a rear mounting portion 57b to which the previous discharge unit 33 is mounted. On the lower surface side, the previously described windshield cover 39 is integrally formed with a recess. That is, the concave portion surrounded by the wind shielding cover 39 also serves as a mounting concave portion for assembling the discharge portion 33. The heat sink 56 is made of an aluminum strip having six radiating fins 56a on its upper surface, and its lower surface side is formed flat.

  The Peltier element 55 is a commercially available product, and is assembled to the square frame-shaped element holder 60 with the upper surface side serving as a heat radiating surface and the lower surface side serving as a heat absorbing surface. Attached. The heat transfer sheet 61 is formed by coating silicon on both the front and back sides of an aluminum sheet, and has both thermal conductivity and electrical insulation. A mounting recess 62 provided in the front mounting portion 57a of the holder 57 is loaded with a square frame-shaped seal rubber 63, a heat transfer plate 64 for cold heat made of aluminum plate material, and an element holder 60 including the heat transfer sheet 61, and Each component is integrated with the holder 57 by fitting the heat sink 56 into the mounting recess 62 and fastening with the screw 65. In this way, when each member is fastened with the screw 65 with the seal rubber 63 interposed, the seal rubber 63 is elastically deformed to absorb the dimensional error of each member and the error of the fastening force with the screw 65, and each heat transfer. The degree of adhesion between members can be improved. The heat transfer sheet 61 and the heat transfer plate 64 are provided in order to increase the cooling area. When the heat transfer sheet 61 and the heat transfer plate 64 are not necessary, the heat transfer sheet 61 and the heat transfer plate 64 are omitted, and the heat absorption surface of the Peltier element 55 is absorbed. It can be part 51.

  Further, as shown in FIG. 4, the holder 57 is fitted into the opening 29, and the left and right portions thereof are fastened to the main case 8 with screws 66, so that the heat-absorbing portion of the heat transfer plate 64, that is, the thermoelectric conversion portion 51. 51A is exposed to the ventilation path 18, and the heat sink 56 on the upper surface is exposed to the auxiliary ventilation path 19. Since the lower portion of the holder 57 is fitted into the opening 29 of the heater cylinder 28, the heater cylinder 28 can be well prevented from being rotationally displaced in the circumferential direction or being displaced in the front-rear direction when receiving a drop impact. The discharge unit 33 of the ion generator is assembled to the rear mounting portion 57b of the holder 57 prior to the assembly of the device, and held and held by the heat sink 56. In this assembled state, the holder 57 also serves as a part of the partition wall that partitions the ventilation path 18 and the auxiliary ventilation path 19. As shown in FIG. 8, the auxiliary ventilation path 19 is formed so that the passage cross-sectional area gradually decreases from the vicinity of the vent 23 to the vicinity of the radiator 56. This is to increase the flow rate of the drying air introduced from the passage 23 and to promote the heat dissipation action in the radiator 56.

  In FIG. 5, the first drive circuit 52 disposed inside the grip 2 includes a rectifier circuit 70 that full-wave rectifies the commercial alternating current, a smoothing circuit 71 that smoothes the rectified current, and the like. The second drive circuit 53 disposed at the rear of the auxiliary ventilation path 19 includes a DC-DC converter circuit 72 that adjusts the smoothed direct current (100 V) to a direct current of 3 V (1 A). is there. The circuit board 75 on which the components of the second drive circuit 53 are mounted is fastened and fixed to the main case 8 in a state of being located above the upper surface of the fan case 22 as shown in FIG. Cooled by 22. If necessary, an outlet is opened on the upper surface of the rear portion of the upper cover 9, and the electric current mounted on the circuit board 75 is utilized by utilizing the inflow action of dry air introduced from the vent 23 to the sub vent 19. The components and the resin mold 47 can be actively cooled.

  As described above, in the state where the holder 57 in which the discharge part 33 and the thermoelectric conversion part 51 are assembled is fastened to the main case 8, the heat absorption part 51A of the discharge part 33 and the thermoelectric conversion part 51 is ventilated as shown in FIG. It is exposed in the vicinity of the air outlet 1b in the path 18. In order to feed the negative ions generated by the discharge unit 33 provided at the offset position in this manner in a state of being isolated from the main stream of the dry air heated by the heater unit 17, A concave notch 4a is formed, a recess 10a continuous with the notch 4a is formed in the upper part of the spacer 10, and a short passage 11a continuous with the recess 10a is further provided in the upper part of the front case 11, so that the discharge part 33 An ion passage 78 is formed on the leeward side. Between the short passage 11a and the recess 10a, a plastic protective grill 79 for preventing a human finger from being inserted into the ion passage 78 and coming into contact with the discharge portion 33 is disposed. Reference numeral 78a denotes an air outlet of the ion passage 78, and the previous protective grill 79 is disposed inward from the opening surface of the air outlet 78a. When the heat absorption part 51A of the thermoelectric conversion part 51 is exposed in the vicinity of the outlet 1b in the air passage 18 as described above, the dry air containing negative ions is effectively cooled, and then immediately from the outlet 1b to the external space. Therefore, it is possible to reduce the chance that ions in a low energy state are mixed with the dry air sent from the ventilation path 18, and the amount of ions that can reach the hair, that is, the amount of moisture can be improved accordingly.

  At the time of use, the first switch knob 5 is slid to cold air, low temperature air, or high temperature air to activate the motor 16 and rotationally drive the blower fan 15. In the low-temperature and high-temperature air modes, the heater wire 27 is energized to heat the dry air supplied from the blower fan 15. At the same time, the ion generation device and the cooling device are activated to generate negative ions, and cold heat is released by the Peltier element 55. In practice, the Peltier element 55 absorbs the heat of the air in the peripheral portion.

  The main stream of the dry air flowing in the ventilation path 18 is heated by the heater wire 27 and blown out from the blower outlet 1b. The heat sink 56 is cooled in contact with the fins 56a. A part of the drying air is blown out through the ion passage 78 together with the negative ions generated in the discharge unit 33. At this time, since the windward side of the discharge part 33 is covered with the wind shield cover 39, the dry wind has no other way than flowing into the ion passage 78 while wrapping around the wind shield cover 39 and the discharge part 33. The air staying in the downstream side is effectively cooled by the heat transfer plate 64, and a large mass of water molecules (big clusters) can be generated in the air around the heat transfer plate 64. Specifically, the amount of saturated water vapor in the surrounding air can be reduced by the cold heat of the Peltier element 55, and at the same time, the thermal kinetic energy can be kept low to make the water molecule a large lump. It combines with ion species such as oxygen molecules combined with free electrons generated in the discharge part 33 to become negative ions (ions). The produced negative ions have a longer life than ordinary negative ions and are not easily dissipated in the air. If these negative ions reach the hair, moisture can be efficiently supplied to the hair by the water molecules in the lump state. Moreover, since the produced | generated negative ion is sent through the ion channel | path 78, compared with the case where it sends through the metal blowing grill 4, it suppresses that a negative ion is adsorb | sucked and lose | disappears. More negative ions can be delivered from the outlet 1b. Since the spacer 10, the front case 11, the protective grill 79 and the like are plastic molded products, unlike the blowout grill 4, negative ions are not adsorbed on these members and disappear. A large mass of water molecules is a gas and is different from a mist droplet.

  As described above, when the negative ions forcibly cooled are blown out from the ion passage 78 in a state isolated from the main stream of the dry air heated by the heater unit 17, while feeding the negative ions together with the dry air, It is possible to prevent negative ions from diffusing into the main stream of dry air. Further, the negative ions generated by the discharge unit 33 are forcibly lowered in temperature by the heat supply action of the endothermic portion 51A of the thermoelectric conversion unit 51, and are maintained in a low thermal kinetic energy state. The discharge unit 33 is arranged at a position closer to the windward side of the endothermic portion 51A of the thermoelectric conversion unit 51, and water molecules that are cooled by the thermoelectric conversion unit 51 to form a large mass are combined with free electrons generated by the discharge unit 33. According to the hair dryer that ionizes with ion species such as oxygen molecules, since the discharge part 33 and the thermoelectric conversion part 51 are arranged oppositely, the contact opportunity between the ion species and water molecules increases. The amount of ions that can be generated can be increased. Moreover, although the relative humidity of the dry wind after being cooled by the thermoelectric conversion unit 51 is higher than that before the cooling, the discharge unit 33 is arranged on the windward side of the thermoelectric conversion unit 51 to cool the drying wind. There is also an advantage that ions can be generated effectively by performing corona discharge in an atmosphere with a low relative humidity. Moreover, since the water molecules that make up the ions are in large lumps, the negative ions are prevented from dissipating in the process of reaching the hair, improving the amount of ions that can reach the hair and moisturizing the hair Can be maintained. Since the negative ions are forcibly cooled by the endothermic action of the heat transfer plate 64, the negative ions can be continuously lowered regardless of the ambient temperature.

  In the above embodiment, the discharge section 33 and the heat transfer plate 64 of the thermoelectric conversion section 51 are made to face the ventilation path 18 and the heat sink 56 is made to face the sub ventilation path 19, but this is not necessary. -It can implement with the form shown in FIG. In the following embodiments, the same members as those in the previous embodiment are denoted by the same reference numerals, and the description thereof is omitted. Differences from the previous embodiment will be mainly described.

In FIG. 9A, the heat absorption part 51 </ b> A of the discharge part 33 and the thermoelectric conversion part 51 is arranged in the air passage 18, and the discharge part 33 is arranged on the windward side of the thermoelectric conversion part 51.
In FIG. 9B, only the thermoelectric conversion part 51 is arranged in the ventilation path 18, and the discharge part 33 is arranged in the auxiliary ventilation path 19 provided outside the ventilation path 18. In this case, the inlet 81 of the auxiliary ventilation path 19 is open to the atmosphere, and the outlet 82 faces the ventilation path 18 in a state of being located on the wind-up side of the thermoelectric conversion part 51 on the heat absorption surface side. The negative ions generated in the auxiliary ventilation path 19 are released from the outlet 82 by the gentle air flow in the auxiliary ventilation path 19 caused by the attracting action of the dry air flowing through the ventilation path 18.
In FIG. 9C, the auxiliary ventilation path 19 is arranged in the ventilation path 18, but the inlet 81 is opposed to the leeward center part of the motor 16, and one of the drying air before heating around the motor 16. The portion was introduced into the sub-ventilation passage 19 so that negative ions generated by the discharge unit 33 in the sub-ventilation passage 19 could be fed together with the previously introduced drying air. The outlet 82 of the auxiliary ventilation path 19 is positioned on the windward side of the heat absorption part 51 </ b> A of the thermoelectric conversion part 51. The winding center Q of the heater wire 27 in FIGS. 9A to 9C is offset downward from the passage center P of the ventilation path 18. 10 (a) to 10 (d) and FIGS. 11 (a) to 11 (c) described below, similarly, the winding center Q of the heater wire 27 is offset downward from the passage center P of the ventilation path 18. I'm allowed.

In FIG. 10 (a), an auxiliary ventilation path 19 having an inlet 81 and an outlet 82 open to the atmosphere is provided outside the ventilation path 18, and a dedicated blower fan 83, a discharge section 33, and a thermoelectric conversion section 51 are provided therein. Were arranged in the order of description from the inlet 81 toward the outlet 82. The heat sink 56 is exposed in the ventilation path 18 and cooled by dry air.
In FIG. 10 (b), the sub-ventilation passage 19 having the inlet 81 and the outlet 82 opened to the atmosphere is provided outside the ventilation passage 18, the heat absorption surface side of the thermoelectric conversion unit 51 is disposed therein, and the heat sink 56 is ventilated. It was exposed in the road 18. Moreover, the 3rd ventilation path 85 was provided in the inside of the ventilation path 18, and the discharge part 33 was arrange | positioned in the inside. The inlet 86 of the third ventilation path 85 is disposed on the ventilation path 18 on the windward side of the heater wire 27, and the outlet 87 faces the heat absorption surface side of the thermoelectric converter 51. Therefore, a part of the drying air before heating can be introduced into the third ventilation path 85 and fed to the endothermic surface side together with the negative ions.

In FIG. 10C, the heat absorption surface side of the discharge part 33 and the thermoelectric conversion part 51 is arranged inside the auxiliary ventilation path 19, and the heat sink 56 is exposed in the ventilation path 18. In this embodiment, a part of the dry air before heating supplied from the blower fan 15 is introduced through the opening 23 and supplied to the heat absorption surface of the thermoelectric conversion unit 51 together with the negative ions generated in the discharge unit 33. can do.
In FIG. 10D, the third ventilation path 85 is provided inside the ventilation path 18, and the inlet 86 is opened to the ventilation path 18 on the windward side of the heater wire 27. The heat absorption surface side of the discharge part 33 and the thermoelectric conversion part 51 was arrange | positioned in the sub ventilation path 19, and the heat sink 56 was exposed in the 3rd ventilation path 85. FIG. In that case, the drying air before heating can be introduced into the auxiliary ventilation path 19 and the third ventilation path 85, respectively.

  As shown in FIGS. 10A to 10D, when the discharge portion 33 and the heat absorbing portion 51 </ b> A are arranged in the auxiliary ventilation path 19 and the radiator 56 is arranged in the ventilation path 18, the room temperature air flowing in the auxiliary ventilation path 19 is used. Thus, negative ions can be generated by the discharge part 33, and the generated negative ions can be cooled by the heat absorption part 51A. Therefore, even when hair is dried by warm air, drying at room temperature is performed around the discharge part 33 and the heat absorption part 51A. By supplying the wind, the dry wind containing negative ions can be cooled more effectively, and the dissipation of water molecules constituting the ions can be effectively reduced by that amount.

In FIG. 11 (a), the auxiliary ventilation path 19 with the inlet 81 and the outlet 82 opened to the atmosphere is provided outside the ventilation path 18, and a dedicated blower fan 83 and a heat sink 56 are disposed therein. The heat absorption surface side of the thermoelectric converter 51 faces the ventilation path 18, and the discharge part 33 is arranged on the windward side.
In FIG. 11B, the auxiliary ventilation path 19 is provided on the upper outer surface of the ventilation path 18, and the heat sink 56 is disposed therein. The heat absorption surface side of the thermoelectric converter 51 faces the ventilation path 18, and the discharge part 33 is arranged on the windward side. A part of the dry air before heating supplied from the blower fan 15 is introduced into the auxiliary ventilation path 19 through the passage 23, and the air after heat exchange can be discharged from the exhaust port 24.
In FIG. 11C, the third ventilation path 85 is provided inside the ventilation path 18, and the inlet 86 is opened to the ventilation path 18 on the windward side of the heater wire 27. Inside the third ventilation path 85, the heat absorption surface side of the discharge part 33 and the thermoelectric conversion part 51 is arranged, and the heat sink 56 is exposed in the auxiliary ventilation path 19.

  In FIG. 12, the auxiliary ventilation path 19 divided by the guide cylinder 90 is formed in the central portion of the heater unit 17, and its inlet 81 is opened to the ventilation path 18 on the windward side of the heater line 27. Inside the auxiliary ventilation path 19, the discharge part 33 and the thermoelectric conversion part 51 are arranged adjacent to each other so that negative ions generated by the discharge part 33 can be cooled by the heat absorption surface of the thermoelectric conversion part 51.

  Other than the above-described embodiment, the blower fan 15 does not need to be an axial fan, and a centrifugal fan can be applied. The radiator 56 does not need to be formed of the aluminum strip described in the embodiment, and can be formed of a copper strip. In addition, the heat exchanging portion does not need to have a fin structure, and in particular, when heat is forcibly dissipated in combination with the cooling fan 83, the heat exchanging portion may be configured with a simple uneven body. it can. Instead of the fin structure, the heat exchange part can be configured in a honeycomb structure. A typical example of the thermoelectric conversion element 55 is a Peltier element, 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 heater substrate 26 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 27 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 27 is made smaller than the radius of curvature of the lower half, and the region of the dry air heated by the heater unit 17 is concentrated on the lower half side of the air passage 18 to perform thermoelectric conversion. The cooling effect by the element 55 can be improved. The heater wire 27 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 18.

  The present invention can also 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, and a pet dryer. In the above embodiment, the case where negative ions are supplied together with dry air has been described. However, it is not necessary, and when positive ions are supplied, or when positive ions and negative ions are supplied simultaneously or alternately. Is also applicable. Moreover, the structure of the discharge part 33 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.

DESCRIPTION OF SYMBOLS 1 Main body case 15 Blower fan 17 Heater unit 18 Ventilation path 19 Sub ventilation path 33 Discharge part 51 Thermoelectric conversion part 55 Peltier element (thermoelectric conversion element)
56 heat sink

Claims (4)

A hair dryer in which a blower fan (15) and a heater unit (17) are arranged inside a main body case (1),
A cooling device for cooling the ions generated by the ion generator is provided,
The ion generator includes a discharge part (33),
The cooling device includes a thermoelectric conversion part (51) having an endothermic part (51A),
The blower fan (15) and the heater unit (17) are disposed inside the ventilation path (18) provided in the main body case (1),
The heat absorption part (51A) of the thermoelectric conversion part (51) of the cooling device faces the ventilation path (18), and the discharge part of the ion generator is located at a position close to the heat absorption part (51A) of the thermoelectric conversion part (51). (33) Ri is placed Thea,
The heater unit (17) is composed of a heater substrate (26) and a heater wire (27) wound around the heater substrate (26).
The heater unit (17) is configured so that the amount of heat generated in one half of the heater wire (27) facing the thermoelectric converter (51) is smaller than the amount of heat generated in the other half of the heater wire (27). features and be Ruhe hairdryer that are. A sub-ventilation passage (19) that is partitioned separately from the ventilation passage (18) in which the blower fan (15) and the heater unit (17) are disposed;
The hair dryer according to claim 1, wherein the heat radiator (56) constituting the thermoelectric converter (51) faces the auxiliary ventilation path (19). A ventilation opening (23) for introducing a part of the dry air before heating fed from the blower fan (15) to the ventilation path (18) into the auxiliary ventilation path (19) is opened.
The hair dryer according to claim 2, wherein an exhaust port (24) is opened in the sub-ventilation passage (19) on the downstream side of the radiator (56) of the thermoelectric converter (51). The hair dryer according to claim 3, wherein the sub-ventilation passage (19) is configured such that the passage cross-sectional area gradually decreases from the vicinity of the vent (23) to the vicinity of the radiator (56).

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