WO2011052560A1 - Blower - Google Patents

Blower Download PDF

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Publication number
WO2011052560A1
WO2011052560A1 PCT/JP2010/068914 JP2010068914W WO2011052560A1 WO 2011052560 A1 WO2011052560 A1 WO 2011052560A1 JP 2010068914 W JP2010068914 W JP 2010068914W WO 2011052560 A1 WO2011052560 A1 WO 2011052560A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
blower according
blade
diffuser
motor
Prior art date
Application number
PCT/JP2010/068914
Other languages
French (fr)
Japanese (ja)
Inventor
東野　高佳
Original Assignee
コクヨ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コクヨ株式会社 filed Critical コクヨ株式会社
Priority to CN2010800487262A priority Critical patent/CN102597526A/en
Publication of WO2011052560A1 publication Critical patent/WO2011052560A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0673—Battery powered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/084—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation hand fans

Definitions

  • the present invention relates to a blower typified by an air duster or the like that purges dust or the like, and particularly to a blower that can be used with economical and high functions while considering the environment.
  • Such a can type is configured such that gas can be compressed and filled in a liquefied state, vaporized by expansion when sprayed from a nozzle, and sprayed onto an object.
  • the vacuum cleaner body has an opening at one end and a handle at the other end, and a plurality of air holes in the body, and an air suction equipped on the opening side of the cleaner body.
  • a driving means for blowing air a control means for controlling activation of the driving means, a driving direction or driving strength, and an air suction path and an air blowing path are each formed by a partition wall, and the opening of the cleaner body And a cylinder that can be used by switching.
  • This vacuum cleaner is configured such that the motor can be driven forward and backward, and can be used to blow out dust and the like from the tip during reverse driving.
  • Patent Document 1 consumes a large amount, particularly when used in industrial applications, and the cost increases as it is used.
  • the can type uses a greenhouse gas such as alternative chlorofluorocarbon. Therefore, there is an adverse effect on the environment.
  • the gas is flammable, there is a risk of ignition and explosion if used incorrectly.
  • Patent Document 2 can be used as a vacuum cleaner and can also be used as an air duster by sucking ambient air during reverse driving.
  • the required injection force can be obtained. Hateful.
  • the suction port and the blowout port are on the same opening side and are used by closing half of them, there is waste and excess resistance in the flow of air, which further reduces the injection force.
  • the present invention is for simultaneously solving the problems of the blower including the conventional air duster, which contributes to environmental pollution countermeasures and can be used economically over a long period of time.
  • the purpose is to provide a simple blower that achieves this.
  • the blower of the present invention rotates integrally with a main body portion having a pair of openings and a flow path formed between both openings, a motor provided in the main body portion, and a shaft center of the motor.
  • a centrifugal fan that combines a moving blade that sucks air in the axial direction and blows it out in the circumferential direction and a stationary blade that guides the air blown out from the moving blade toward the axial center in multiple stages along the axis of the motor. It comprises a series of air compression units and an injection nozzle provided in the exhaust side opening of the main body. By operating the motor, ambient air is sucked from the intake side opening, and compressed by the air compression unit. And compressed air can be injected from an injection nozzle provided at an opening on the exhaust side.
  • the air compression unit is configured by connecting the centrifugal fans in multiple stages, the air compression ratio and the injection force from the injection nozzle can be efficiently increased through the setting of the number of stages of the fans, the shape of the injection nozzle, and the like.
  • the stationary blade is provided with at least a part of a return blade that guides the air blown from the moving blade in the circumferential direction toward the axis again. It is desirable that
  • At least one surface of the stationary blade is provided with a diffuser that converts kinetic energy given to the air from the moving blade into pressure energy.
  • the air led out from the diffuser and circulated to the other surface of the stationary blade is directed toward the axis. It is desirable to have a return vane to guide.
  • the diffuser of the stationary blade is arranged along the circumferential direction at a position of a predetermined radius or more to form a cavity on the inner diameter side. It is preferable that all or part of the moving blade smaller than the predetermined radius is accommodated along the axial direction.
  • the injection nozzle can be attached to or detached from the exhaust side opening. It is desirable to have a cartridge structure.
  • a suction nozzle having a cartridge structure can be detachably attached to the opening on the intake side.
  • the opening on the intake side and the opening on the exhaust side are in a reverse positional relationship. It is preferable that a switch for controlling the number of rotations of the motor at the time of suction and a switch for controlling the number of rotations of the motor at the time of injection are provided at positions where the same finger is caught when they are moved so as to make
  • control of the number of rotations of the motor includes stepless control, step-by-step control, simple on / off control, and the like.
  • a configuration in which a silencer for reducing the suction sound is provided on the intake side is appropriate.
  • a configuration in which a sound insulating material is provided at a position surrounding the periphery of the flow path is preferable.
  • the present invention Since the present invention has the configuration described above, it requires no running cost other than power consumption, and can be used at a much lower cost than a spray can type air duster using gas. In addition, it uses only ambient air instead of special gases, so it does not generate harmful and dangerous flammable gases, no cans need to be manufactured or disposed of, and it does not have a greenhouse effect. It has utility value as a gentle blower.
  • FIG. 1 is a schematic perspective view of an air duster according to a first embodiment of the present invention.
  • FIG. 1 is a perspective view showing an appearance of an air duster that is a blower of the present embodiment
  • FIG. 2 is a schematic view showing an internal mechanism.
  • an air compression unit 2 and a motor 3 are installed in a casing 5 as a main body having openings 1 and 4 at both ends, and a cap 11 is provided in an opening 1 on the intake side (hereinafter referred to as an intake port).
  • an injection nozzle 41 is provided in the exhaust side opening 4 (hereinafter referred to as an exhaust port).
  • the casing 5 has a cylindrical shape, and a flow path 5a is formed between the intake port 1 and the exhaust port 4, and a sound insulating material (not shown) is provided on the peripheral wall of the casing 5 so as to wrap around the flow path 5a.
  • the housing 5 has a double cylinder structure, and a sound insulating material is wound around the outer circumference of the inner cylinder, and the outer circumference is covered with the outer cylinder.
  • the motor 3 is disposed on the side close to the exhaust port 4 and is fixed to the housing 5 by an appropriate rib structure (not shown) so as not to cause flow path resistance.
  • the output shaft 31 of the motor 3 extends to the intake port 1 side, and the air compression unit 2 is configured on the extended end 31a side.
  • the air compression unit 2 has a configuration in which the centrifugal fans 21 are connected in five stages at a predetermined interval. Specifically, as shown in FIG. 2, the centrifugal fan 21 divides the inside of the housing 5 into five rooms by an annular partition plate 51, and the stationary blade 21b shown in FIG. 3 is fixed for each room. The moving blade 21a is fitted inside the stationary blade 21b in a non-contact manner. The moving blade 21a is attached to the output shaft 31 of the motor 3 so as to be integrally rotatable. The output shaft 31 is penetrated without contact.
  • the rotor blade 21a is provided with an impeller 21a1 that sends out air from the inner periphery toward the outer periphery, and the stationary blade 21b has a lead-out fin 21b1 that guides the air sent out by the rotor blade 21a to the opposite surface and the opposite side.
  • an impeller 21b2 for sending air guided to the surface from the outer periphery toward the inner periphery.
  • the air that has flowed into the first centrifugal fan 21 close to the air inlet 1 is guided to the center of the moving blade 21a and is circumferentially directed. (See FIG. 3A), flows into the stationary vane 21b side by the outlet fin 21b1 (see FIG. 3B), and further flows into the axial center of the stationary vane 21b. It is guided by the moving blade 21a (see FIG. 3C). In this way, after the compressed air is generated by compressing the air one after another by the centrifugal fans 21 of each stage, the compressed air is ejected from the terminal centrifugal fan 21 shown in FIG.
  • An appropriate rectification unit (not shown) is provided between the flow paths from the exit of the stationary blade 21b to the entrance of the next-stage moving blade 21a in order to avoid an increase in flow resistance.
  • the cap 11 provided in the intake port 1 has a cartridge structure that can be attached to and detached from the intake port 1 as shown in FIGS.
  • the cap 11 is provided with an opening 11a serving as a suction port, and an appropriate silencer mechanism (not shown) for reducing the suction sound is provided therein.
  • a suction nozzle 12 having a detachable cartridge structure can be attached to the suction port 1, and the suction nozzle 12 can be used in place of the cap 11.
  • the suction nozzle 12 has a shape that expands in a trumpet shape from the flat rectangular suction opening 12a toward the attachment end 12b to the intake port 1, and the filter 121 can be replaced with an opening near the attachment end 12b. It is installed inside.
  • the injection nozzle 41 provided in the exhaust port 4 has a cartridge structure that can be attached to and detached from the exhaust port 4 as shown in FIG.
  • a tapered air outlet 41a is provided inside the injection nozzle 41 so that the compressed air can be smoothly compressed and ejected.
  • the exhaust port 4 has a smaller taper angle by reducing the outlet 42 b and increasing the total length of the nozzle in order to reduce the flow path resistance and increase the injection pressure.
  • Other injection nozzles 42 having a shallow air outlet 42a, or other injection nozzles (not shown) with a larger outlet and a deeper taper angle to reduce the injection pressure are selectively used. It can be attached.
  • a straw-like spray port (not shown) can be detachably attached to the tips of the spray nozzles 41, 42 and the like when applied to a narrow place.
  • FIG. 8 Such an air duster is used when the spray nozzle 41 (42) is directed forward as shown in FIG. 6 and used as a cleaner as shown in FIG. 8 and when the suction nozzle 12 is directed forward as shown in FIG. Since the usability is reversed, as shown in FIGS. 1 and 2, the handle 6 incorporating the air volume adjustment switches 61 and 62, the main power switch 63, and the control unit 8 from the vicinity of the center of the housing 5 downward vertically. And a battery part 7 at the tip of the handle 6.
  • reference numeral 4 a denotes a rib that prevents foreign matter from entering the inside of the exhaust port 4, and such a rib is also provided in the intake port 1 that is exposed at a position where the suction nozzle 12 is removed. Therefore, it appears even when the cap 11 is removed in FIG.
  • the handle 6 is formed in a cylindrical shape, and the air volume adjustment switches 61 and 62 are disposed on the front and rear end surfaces 6a and 6b near the base of the handle 6, and the main power switch 63 is disposed on the front and rear end surfaces 6a and 6b. It is arrange
  • the air volume adjustment switches 61 and 62 are used to input an operation amount in accordance with the pressing amount of the finger, and the main power switch 63 is a type capable of switching between two on / off positions as an input.
  • the air volume adjustment switches 61 and 62 and the main power switch 63 are connected to the motor 3 of the housing 5 via the control unit 8.
  • the battery unit 7 is for supplying power to the motor 3, and can use a rechargeable secondary battery such as a nickel cadmium battery or a nickel metal hydride battery, or a disposable battery such as an alkali.
  • a rechargeable secondary battery such as a nickel cadmium battery or a nickel metal hydride battery
  • a disposable battery such as an alkali.
  • the control unit 8 receives power from the battery unit 7, receives operation amount inputs from the switches 61, 62, and 63, switches the connection / disconnection state of the motor 3 according to the on / off state of the main power switch 63, and In accordance with the operation amount (push-in amount) of the adjustment switches 61 and 62, the energization amount to the motor 3, that is, the rotation speed is changed steplessly. In this case, if the main power switch 63 is in the ON state, the motor 3 is configured to be energized according to the operation amount regardless of which air volume adjustment switch 61, 62 is operated.
  • this embodiment configured as described above as an air duster, as shown in FIG. 6, first, the vicinity of the base of the handle 6 is gripped by hand, the lower surface side of the housing 5 is placed on the gripped fist, and the injection is performed.
  • the nozzle 41 (42) is directed forward.
  • the main power switch 63 (see FIG. 1) is turned on so that the motor 3 can be driven. And if switch 61 is pushed with an index finger and the amount of pushing is adjusted arbitrarily, required injection power can be obtained.
  • FIG. 7 shows an example in which the switch 62 is pushed with the thumb. In this case as well, it is possible to obtain the same operation as that in FIG. 6, and the switch 62 can be used when such a handle is more convenient depending on the use object and the use place.
  • the cap 11 attached to the intake port 1 is removed and a new suction nozzle 12 is attached, and the injection nozzle 41 (42) on the exhaust port 4 side shown in FIG. 5 is removed.
  • the handle 6 is changed as shown in FIG. 8 so as to be a handle opposite to the front / rear direction when the air duster shown in FIG. 6 is used.
  • the push amount is adjusted by pressing the switch 62 with the index finger or the switch 61 with the thumb, the required suction force can be obtained under an appropriate operation suitable for the use object and place of use. it can.
  • the air duster includes a housing 5 having a pair of openings (intake port 1 and exhaust port 4) and a flow path 5 a formed between the openings 1 and 4, and the housing 5.
  • the motor 3 provided inside, the moving blade 21a that rotates integrally with the shaft center of the motor 3, sucks air in the axial direction, and blows it out in the circumferential direction, and the air blown out from the moving blade 21a as the shaft center again.
  • a centrifugal fan 21 combined with stationary vanes 21b that are guided toward the air compressor 2 is provided in a multi-stage manner along the axis of the motor 3; and an injection nozzle 41 provided in the exhaust port 4 of the housing 5.
  • the centrifugal fan 21 when the centrifugal fan 21 is connected in multiple stages to form the air compression unit 2, the compression ratio of the air and the injection nozzle 41 (42) are determined by designing the number of stages of the centrifugal fan 21 and the shape of the injection nozzle 41 (42). The injection force from can be efficiently increased.
  • the injection nozzle 41 has a cartridge structure that can be attached to and detached from the exhaust port 4, the diameter can be changed by replacing the injection nozzles 41 and 42 according to the required injection pressure, In addition, maintenance and the like when the injection port 4 and the injection nozzle 41 are clogged with dust or dust can be easily performed.
  • the suction nozzle 12 having a cartridge structure can be detachably attached to the intake port 1, if the injection nozzle 41 is removed and used, it can be used not only as an air duster but also as a cleaner.
  • an air volume adjustment switch 61 and an injection that mainly control the number of revolutions of the motor 3 at the time of suction, respectively, are placed at positions where the same finger is caught when the intake port 1 and the exhaust port 4 are switched so as to have an opposite positional relationship. Since the air volume adjustment switch 62 that mainly controls the rotation speed of the motor 3 at the time is provided, it can be used in an appropriate position without feeling uncomfortable when used as an air duster or when it is used as a cleaner by reversing forward and backward. The existing air volume adjustment switches 61 and 62 can be operated.
  • the air volume adjustment switches 61 and 62 can be used for both suction and ejection, the air volume adjustment switches 61 and 62 can be used in accordance with the holding method and application object when used as an air duster or cleaner. Any one of them can be used, and usability can be improved.
  • the filter 121 is detachably provided at a position closing the suction-side flow path 5a, dust and dust can be prevented from flowing into the housing 5, and the filter 121 can be easily cleaned and replaced. be able to.
  • the silencer for reducing the suction sound is provided on the intake side, it is possible to reduce the noise when using the air duster and prevent the user and the surroundings from being uncomfortable.
  • the sound insulating material is provided at the position surrounding the periphery of the flow path 5a, it is possible to similarly suppress noise when used as an air duster or the like, and to prevent discomfort to the user and the surroundings. it can.
  • the flow path 5a is narrowed to provide a large suction resistance. Since the structure located on the downstream side of the air flow path 5a with respect to the compression unit 2 is adopted, even if the flow path 5a becomes narrow, there is little flow path resistance for air whose volume is reduced by compression. For this reason, installation of the motor 3 and the smooth flow of compressed air can be made to make compatible suitably.
  • the centrifugal fans 21 in the air compression unit 2 are configured to be connected in five stages.
  • this is not limited to numerical values, and the number of the centrifugal fans 21 is set according to a required compression rate. The design to increase or decrease is possible.
  • the control unit 8 is provided inside the handle 6 and the battery unit 7 is provided at the tip of the handle 6.
  • the battery unit 7 may be provided separately and connected by the power cable 71, and the battery unit 7 and the control unit 8 are incorporated in the handle 6 as shown in FIG. You may comprise.
  • the battery unit 7 is provided inside the handle 6, and the control unit 8 is provided in the casing 5, or the battery unit 7 is eliminated as shown in FIG. 10 (a). Power may be supplied through the AC outlet 72 and the power cable 71. Further, as shown in FIG.
  • the handle 6 and the battery unit 7 are eliminated, the control unit 8 is provided in the housing 5, and power can be supplied by the AC outlet 72 and the cable 71.
  • the battery unit 7 (battery) is configured to be connectable to a household power source or the like via an AC outlet so that the air duster is driven by power from the household power source or the like when connected, and the battery unit 7 when disconnected.
  • the air duster can also be configured to be driven by the electric power charged in the battery.
  • the filter 121 when using as a cleaner, the filter 121 was provided in the suction nozzle 12,
  • a filter functions also when providing a filter in a main-body part and using it as an air duster which injects compressed air from an injection nozzle. It is also conceivable to configure so as to.
  • the air volume adjustment switches 61 and 62 in the above embodiment are of a slide volume type that inputs the operation amount in a stepless manner according to the amount of pressing of the finger, other types that control the air flow in stages are also available. A simple on / off control type can also be employed. (Second Embodiment)
  • FIG. 11 shows an air duster that is a blower of another embodiment.
  • This air duster also has a pair of openings (intake port 101, exhaust port 104) and a passage 105a formed between the openings 101 and 104, and a motor 103 provided inside the case 105.
  • an air compression unit 102 powered by the motor 103.
  • ambient air is sucked from the intake port 101, compressed air is generated by the air compression unit 102, and the exhaust port It is comprised so that compressed air can be injected from 104.
  • FIG. A grip (handle) 106 is attached to the housing 105.
  • the housing 105 rotates with respect to the grip 106 via a click mechanism 109 as shown in FIG.
  • the exhaust port 104 has a tapered shape (horn shape) and itself forms a fixed injection nozzle, and an attached injection nozzle 141 can be attached to and detached from the exhaust port 104.
  • the injection nozzle 141 is detachably held by a holder 105h provided in the housing 105 when not in use.
  • the air compression unit 102 is basically the same as that in the above embodiment. That is, the air compression unit 102 of this embodiment also has a configuration in which five centrifugal fans 121 are connected at predetermined intervals as shown in FIG. 13, and is driven by the motor 103 in FIG. 11 located downstream of the air flow path. .
  • the housing 105 has an upper and lower halved structure, and when the housing 105 is abutted, five chambers are formed in the housing 105 by the annular partition plate 151. Is housed in each room.
  • the rotor blade 121a is pivotally attached to the output shaft 131 of the motor 103 so as to be integrally rotatable, and the stationary blade 121b penetrates the output shaft 131 of the motor 103 in a non-contact manner.
  • the moving blade 121a includes a large number of impellers 121a1 that spirally extend from the inner periphery to the outer periphery as shown in FIG. , 121a3.
  • a hole larger than the output shaft 131 of the motor 103 is provided at the axial center position of the one face plate 121a2, and a hole for fitting with the output shaft 131 of the motor 103 is provided at the axial position of the other face plate 121a2.
  • the stationary blade 121b includes a diffuser 121b1 (corresponding to the lead-out fin 21b1 in the above embodiment) and a face plate 121b3 arranged along the circumferential direction at a position of a predetermined radius r1 or more from the center of one face of the face plate 121b3.
  • a return blade 121b2 (corresponding to the impeller 21b2 of the above-described embodiment) is provided on the other surface.
  • the diameter r2 from the center to the outer periphery of the moving blade 121a is smaller than the predetermined radius r1 of the stationary blade 121b, and the axial dimension d of the moving blade 121a or a part thereof is the axial direction of the stationary blade 121b.
  • the rotor blade 121a is accommodated in the hollow portion S existing on the inner diameter side of the diffuser 121b1 of the stationary blade 121b with the setting related to the dimension h or a part of the dimension. Yes.
  • the total dimension d2 obtained by adding the height of the impeller 121a1 constituting the moving blade 121a and the thickness of the double-sided plates 121a2 and 121a3 is the height h1 of the diffuser 121b. Even if it is configured so as to be substantially equal to or less than (d2 ⁇ h1), the same effect as in the case of FIG.
  • the diffuser 121b is located at the opening OP of the moving blade 121a.
  • the amount of protrusion of the moving blade 121a from the stationary blade 121b in the axial direction can be suppressed without greatly reducing the compression efficiency.
  • the air compression unit of the present embodiment when configured as described above, the air compression unit of the present embodiment, as shown in FIG. 13 and FIG. Air is introduced into the first centrifugal fan 21 close to the mouth 1 and guided to the center of the moving blade 121a (arrow T1), and kinetic energy is given by the impeller 121a1 to be ejected from the opening OP in the circumferential direction (arrow T2). Then, the kinetic energy is converted into pressure energy by the diffuser 121b1 of the stationary blade 121b existing at that position, and then transferred from the outer peripheral side to the opposite surface (arrow T3). After returning to (see FIG. 3C), it is guided to the moving blade 21a of the centrifugal fan 21 at the next stage (arrow T4 in FIG. 16). Thus, after compressing air one after another by the centrifugal fan 21 of each stage, compressed air is generated from the centrifugal fan 21 at the end as shown in FIG. 13 (T5).
  • the air duster of this embodiment can be selectively switched between a use state and a folded state through a rotation operation between the housing 105 and the grip 106 as shown in FIG.
  • a click switching mechanism 109 schematically shown in FIG. 19 is formed between the connection portion 150 belonging to the housing 105 and the connection portion 160 belonging to the grip 106 at the base of the grip 106.
  • the click switching mechanism 109 includes a bearing portion 191 provided in the connection portion 150, a shaft portion 191c provided on the connection portion 160 side, a click engagement portion 192b1, and a protrusion 192a.
  • the bearing portion 191 includes a stopper 191a, a ring-shaped click body (spring body) 191b, and a boss hole (sliding hole) 191c connected in a circular shape, and the click protrusion 191b1 projects integrally with the click body 191b. It can be set up.
  • a click portion 192c is provided at a position where it is fitted with the boss hole 191c, and the click protrusion 191b1 is engaged.
  • a portion 192b1 is provided, and a protrusion 192a that engages with the stopper 191a at a rotation end in a predetermined rotation range is provided.
  • the grip 106 rotates relative to the housing 105 in the forward and reverse directions, the protrusion 192a hits one of the stoppers 191a of the bearing portion 191, and at this time, the click engagement portion 192b1 gets over the click protrusion 191b1.
  • the rotational position of the grip 106 is held by engaging with the position, so that the relative relationship between the grip 106 and the housing 105 can be stably held in the use state or the folded state.
  • the click-type bearing structure is compact by providing a detent that restricts the rotation range not on the outer peripheral side but on the inner peripheral side of the click body 191b that gives a click feeling to the rotation of the grip 106.
  • the stopper 191a, the boss hole 191c, and the click body 191b are configured by one bearing portion 191.
  • the shaft portion 191c, the click engagement portion 192b1, and the protrusion 192a are provided. If it is integrally formed on the cover of the grip 106, the number of parts can be effectively reduced.
  • the diffuser 121b1 that converts the kinetic energy given to the air from the moving blade 121a into pressure energy is provided on at least one surface of the stationary blade 121b, particularly with respect to the configuration of the air compression unit 102. Since it provided, the kinetic energy given to the air from the moving blade 121a can be reliably stored in the air without loss and the compression rate can be increased.
  • the stationary blade 121b is further provided with a return blade 121b2 on the other surface for guiding the air led out from the diffuser 121b1 and circulated to the other surface toward the axial center, so that the pressure is increased in a limited space.
  • the air thus efficiently and accurately can be sent to the next-stage moving blade 121a.
  • the diffuser 121b1 of the stationary blade 121b is arranged along the circumferential direction at a position greater than or equal to a predetermined radius r1 to form a cavity S on the inner diameter side, and a radius r2 smaller than the predetermined radius r1 is formed in the cavity S.
  • the moving blade 121a is accommodated in whole or in part, and the axial dimension d of the moving blade 121a and the axial dimension h of the stationary blade 121b overlap with each other.
  • the compression efficiency can be effectively increased by shortening the dimensions and causing the impeller 121a1 of the moving blade 121a and the diffuser 121b1 of the stationary blade 121b to face each other in the radial direction.
  • the opening OP of the moving blade 121a fits within the axial dimension h1 of the diffuser 121b1 of the stationary blade 121b, it is very compact and efficient.
  • the air compression unit 102 can be realized. By providing a plurality of pairs of the moving blades 121a and the stationary blades 121b, it is possible to configure a blower having a strong injection force by effectively increasing the compression rate while being compact.
  • the diffuser may not necessarily be provided on the stationary blade, but the inner wall of the cylindrical casing can also be configured to serve as a diffuser.
  • the stationary blade itself can be integrally formed in a cylindrical casing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

Provided is a simple blower which contributes to measures against environmental pollution, can be used economically over a long period, and achieves a higher function and a more compact size compared to conventional ones. The blower is provided with: a housing (5) which has a pair of openings (1, 4) and in which a flow path (5a) is formed between both the openings (1, 4); a motor (3) provided within the housing (5); an air compression part (2) configured by joining centrifugal fans (21), each of which is formed by combining moving blades (21a) that rotate integrally with the shaft center of the motor (3), suck in air in the shaft center direction, and expel the air in the circumferential direction, and stationary blades (21b) that guide again the air expelled from the moving blades (21a) in the shaft center direction, in multiple stages along the shaft center of the motor (3); and a spray nozzle (41) provided at the discharge port (4) of the housing (5), said blower being configured to be able to suck in ambient air from the suction port (1) by activating the motor (3), generate compressed air by the air compression part (2), and spray the compressed air from the spray nozzle (41) provided at the discharge port (4).

Description

送風機Blower
　本発明は、埃等をパージするエアダスタ等に代表される送風機に係り、特に環境に配慮しつつ、経済的かつ高い機能で使用できるようにした送風機に関するものである。 The present invention relates to a blower typified by an air duster or the like that purges dust or the like, and particularly to a blower that can be used with economical and high functions while considering the environment.
　この種の送風機の一つであるエアダスタとして、特許文献１に示されるような缶タイプのものが多く出回っている。この種のエアダスタは、主として産業用途が多く、製造工場やパチンコ機、ＡＴＭ機、自動販売機、自動改札機、コピー機などの種々様々な精密機器のメンテナンスなどに広く用いられている。 As an air duster that is one of this type of blower, many can types such as those disclosed in Patent Document 1 are on the market. This type of air duster mainly has many industrial uses, and is widely used for maintenance of various precision devices such as manufacturing factories, pachinko machines, ATM machines, vending machines, automatic ticket gates, and copy machines.
　かかる缶タイプのものは、ガスを圧縮して液化状態で充填しておき、ノズルから噴射する際の膨張により気化させて、対象物にガスを吹き付けることができるように構成されている。 Such a can type is configured such that gas can be compressed and filled in a liquefied state, vaporized by expansion when sprayed from a nozzle, and sprayed onto an object.
　また、他に参考になるものとして、特許文献２に示す掃除機が挙げられる。このものは、一端に開口部を形成し、他端に把手部を形成すると共に、胴部に複数の空気孔を形成した掃除器本体と、前記掃除器本体の開口部側に装備した空気吸引或いは空気吹き出しを行う駆動手段と、前記駆動手段の起動や駆動方向或いは駆動の強弱を制御する制御手段と、仕切り壁により空気吸引路及び空気吹き出し路をそれぞれ形成し、前記掃除器本体の開口部に装着して切り換え使用可能な筒体とを備えている。 Also, as another reference, there is a vacuum cleaner shown in Patent Document 2. The vacuum cleaner body has an opening at one end and a handle at the other end, and a plurality of air holes in the body, and an air suction equipped on the opening side of the cleaner body. Alternatively, a driving means for blowing air, a control means for controlling activation of the driving means, a driving direction or driving strength, and an air suction path and an air blowing path are each formed by a partition wall, and the opening of the cleaner body And a cylinder that can be used by switching.
　この掃除機は、モータが正逆駆動可能であり、逆駆動時に先端から空気を噴出して埃等を吹き飛ばすことにも用いることができるように構成されている。 This vacuum cleaner is configured such that the motor can be driven forward and backward, and can be used to blow out dust and the like from the tip during reverse driving.
特開平１０－５２６７６号公報JP-A-10-52676 特開平９－３２７４２１号公報JP-A-9-327421
　ところが、特許文献１の従来の缶タイプのものは、特に産業用途で用いる場合に消費数量が多く、使用するほどコストが掛かる上に、缶タイプでは代替フロン等の温室効果ガスを使用しているため、環境に悪影響がある。また、ガスが可燃性のために、使い方を間違えると引火・爆発の危険性もある。 However, the conventional can type of Patent Document 1 consumes a large amount, particularly when used in industrial applications, and the cost increases as it is used. In addition, the can type uses a greenhouse gas such as alternative chlorofluorocarbon. Therefore, there is an adverse effect on the environment. In addition, because the gas is flammable, there is a risk of ignition and explosion if used incorrectly.
　一方、特許文献２のものは、掃除機として利用できるとともに、逆駆動時には周辺空気を吸込んでエアダスタとしても利用可能なものであるが、ファンが一つしかないために所要の噴射力を得られにくい。しかも、吸込み口と吹き出し口が同じ開口側にあり、半分を塞いで使い分けているため、空気の流れに無駄や余分な抵抗があり、更に噴射力を低下させる要因となっている。 On the other hand, Patent Document 2 can be used as a vacuum cleaner and can also be used as an air duster by sucking ambient air during reverse driving. However, since there is only one fan, the required injection force can be obtained. Hateful. In addition, since the suction port and the blowout port are on the same opening side and are used by closing half of them, there is waste and excess resistance in the flow of air, which further reduces the injection force.
　噴射力の点については、空気を圧縮するためにコンプレッサを用いることも考えられるが、要素部品が増えて、装置本体が大掛かりなものとなってしまう。 Regarding the point of injection power, it is conceivable to use a compressor to compress air, but the number of component parts increases and the apparatus main body becomes large.
　本発明は、これら従来のエアダスタを始めとする送風機の課題を同時に解決するためのものであって、環境汚染対策に資するとともに、長期に亘って経済的に使用でき、従来よりも高機能かつ小型化を果たした簡易な送風機を提供することを目的としている。 The present invention is for simultaneously solving the problems of the blower including the conventional air duster, which contributes to environmental pollution countermeasures and can be used economically over a long period of time. The purpose is to provide a simple blower that achieves this.
　本発明は、かかる目的を達成するために、次のような手段を講じたものである。 In the present invention, in order to achieve such an object, the following measures are taken.
　すなわち、本発明の送風機は、一対の開口を有し両開口の間に流路を形成した本体部と、該本体部の内部に備えられたモータと、該モータの軸心と一体に回転し軸心方向に空気を吸い込んで円周方向に吹き出す動翼および当該動翼から吹き出した空気を再度軸心に向かって案内する静翼を組み合わせた遠心ファンを前記モータの軸心に沿って多段に連ねてなる空気圧縮部と、本体部の排気側の開口に設けた噴射ノズルとを具備してなり、モータを作動させることによって吸気側の開口から周辺の空気を吸い込み、空気圧縮部で圧縮空気を生成し、排気側の開口に設けた噴射ノズルから圧縮空気を噴射し得るように構成したことを特徴とする。 That is, the blower of the present invention rotates integrally with a main body portion having a pair of openings and a flow path formed between both openings, a motor provided in the main body portion, and a shaft center of the motor. A centrifugal fan that combines a moving blade that sucks air in the axial direction and blows it out in the circumferential direction and a stationary blade that guides the air blown out from the moving blade toward the axial center in multiple stages along the axis of the motor. It comprises a series of air compression units and an injection nozzle provided in the exhaust side opening of the main body. By operating the motor, ambient air is sucked from the intake side opening, and compressed by the air compression unit. And compressed air can be injected from an injection nozzle provided at an opening on the exhaust side.
　このように構成すれば、電力消費以外にランニングコストがかからないため、ガスを用いたスプレー缶タイプの送風機に比べて遙かに安価に利用することができる。その上、特別なガスではなく周辺の空気を利用するだけであるので、有害で危険な可燃性ガスを発生させず、缶の製造や廃棄も不要となり、温室効果を伴うこともないため、環境に優しい送風機としての利用価値を有する。また、遠心ファンを多段状に連ねて空気圧縮部を構成するにあたり、ファンの段数や噴射ノズルの形状等の設定を通じて、空気の圧縮率や噴射ノズルからの噴射力を効率良く高めることができる。 If configured in this way, since there is no running cost other than power consumption, it can be used much cheaper than a spray can type blower using gas. In addition, it uses only ambient air instead of special gases, so it does not generate harmful and dangerous flammable gases, no cans need to be manufactured or disposed of, and it does not have a greenhouse effect. It has utility value as a gentle blower. Further, when the air compression unit is configured by connecting the centrifugal fans in multiple stages, the air compression ratio and the injection force from the injection nozzle can be efficiently increased through the setting of the number of stages of the fans, the shape of the injection nozzle, and the like.
　圧縮後の空気を次段の動翼に効率良く導入するためには、静翼が、動翼から円周方向に吹き出した空気を再度軸心に向かって案内する戻り羽根を少なくとも一部に備えていることが望ましい。 In order to efficiently introduce the compressed air into the next-stage moving blade, the stationary blade is provided with at least a part of a return blade that guides the air blown from the moving blade in the circumferential direction toward the axis again. It is desirable that
　圧縮効率を高めるためには、静翼の少なくとも一方の面に、動翼から空気に与えられる運動エネルギを圧力エネルギに変換するディフューザを備えていることが望ましい。 In order to increase the compression efficiency, it is desirable that at least one surface of the stationary blade is provided with a diffuser that converts kinetic energy given to the air from the moving blade into pressure energy.
　この場合も、圧縮後の空気を次段の動翼に効率良く導入するためには、静翼の他方の面に、ディフューザから導出されて他方の面に回り込んだ空気を軸心に向かって案内する戻り羽根を備えていることが望ましい。 Also in this case, in order to efficiently introduce the compressed air into the next stage blade, the air led out from the diffuser and circulated to the other surface of the stationary blade is directed toward the axis. It is desirable to have a return vane to guide.
　コンパクト化と圧縮効率とを好適に両立させるためには、静翼のディフューザは所定半径以上の位置に円周方向に沿って配列されて内径側に空洞部を形成し、この空洞部に、前記所定半径よりも小径な動翼の全部又は一部を軸心方向に沿って収納していることが好ましい。 In order to achieve both compactness and compression efficiency suitably, the diffuser of the stationary blade is arranged along the circumferential direction at a position of a predetermined radius or more to form a cavity on the inner diameter side. It is preferable that all or part of the moving blade smaller than the predetermined radius is accommodated along the axial direction.
　特に、静翼のディフューザの軸方向寸法内に動翼の開口が収まるようにしていることが効果的である。 Especially, it is effective to make the opening of the moving blade fit within the axial dimension of the stator diffuser.
　噴射圧に応じた噴射ノズルの口径の変更や、塵芥や埃などで噴射口や噴射ノズルが詰まった場合のメンテナンスを容易とするためには、噴射ノズルが排気側の開口に対して着脱可能なカートリッジ構造をなしていることが望ましい。 To facilitate maintenance when the nozzle diameter changes according to the injection pressure, or when the injection nozzle or injection nozzle is clogged with dust or dirt, the injection nozzle can be attached to or detached from the exhaust side opening. It is desirable to have a cartridge structure.
　送風機を、エアダスタだけでなくクリーナとしても利用するためには、吸気側の開口にもカートリッジ構造の吸込ノズルを着脱可能に取り付け得るようにしていることが好ましい。 In order to use the blower not only as an air duster but also as a cleaner, it is preferable that a suction nozzle having a cartridge structure can be detachably attached to the opening on the intake side.
　エアダスタとして使用する際にも、前後反転してクリーナとして使用する際にも、違和感を覚えることなくスイッチ操作を可能とするためには、吸気側の開口と排気側の開口とが逆の位置関係をなすように持ち替えた際に同じ指掛かりとなる位置に、それぞれ吸込時のモータの回転数を制御するスイッチ及び噴射時のモータの回転数を制御するスイッチを備えていることが好適である。この場合の「モータの回転数の制御」には、無段階制御のほか、段階的な制御、単なるオンオフの制御等が含まれる。 In order to enable switch operation without feeling uncomfortable when using it as an air duster or as a cleaner by turning it back and forth, the opening on the intake side and the opening on the exhaust side are in a reverse positional relationship. It is preferable that a switch for controlling the number of rotations of the motor at the time of suction and a switch for controlling the number of rotations of the motor at the time of injection are provided at positions where the same finger is caught when they are moved so as to make In this case, “control of the number of rotations of the motor” includes stepless control, step-by-step control, simple on / off control, and the like.
　使い勝手の向上を図るためには、何れのスイッチも、吸込時および噴出時の双方に共用可能としている構成が有効である。 In order to improve usability, it is effective to use a configuration in which any switch can be used for both suction and ejection.
　本体部へ塵芥や埃が流入することを防ぐためには、吸込み側の流路を塞ぐ位置に着脱可能にフィルタを設けていることが望ましい。 In order to prevent dust and dirt from flowing into the main body, it is desirable to provide a detachable filter at a position that closes the suction-side flow path.
　使用者や周囲に対して不快感を与えることなく使用するためには、吸気側に吸い込み音を低減するサイレンサが設けてある構成が適当である。 In order to use without causing discomfort to the user and the surroundings, a configuration in which a silencer for reducing the suction sound is provided on the intake side is appropriate.
　さらにエアダスタ等として使用する時の騒音を抑制するためには、流路の周囲を包む位置に遮音材を設けている構成が好ましい。 Furthermore, in order to suppress noise when used as an air duster or the like, a configuration in which a sound insulating material is provided at a position surrounding the periphery of the flow path is preferable.
　モータの設置と圧縮空気のスムーズな流れを好適に両立させるためには、前記本体部に搭載されたモータが、空気圧縮部よりも空気流路の下流にある構造が望ましい。 In order to achieve both the installation of the motor and the smooth flow of compressed air in a suitable manner, a structure in which the motor mounted on the main body is downstream of the air flow path rather than the air compressor is desirable.
　本発明は、以上説明した構成であるから、電力消費以外にランニングコストがかからないため、ガスを用いたスプレー缶タイプのエアダスタに比べて遙かに安価に利用することができる。その上、特別なガスではなく周辺の空気を利用するだけであるので、有害で危険な可燃性ガスを発生させず、缶の製造や廃棄も不要となり、温室効果を伴うこともないため、環境に優しい送風機としての利用価値を有する。 Since the present invention has the configuration described above, it requires no running cost other than power consumption, and can be used at a much lower cost than a spray can type air duster using gas. In addition, it uses only ambient air instead of special gases, so it does not generate harmful and dangerous flammable gases, no cans need to be manufactured or disposed of, and it does not have a greenhouse effect. It has utility value as a gentle blower.
本発明の第１実施形態に係るエアダスタの模式的な斜視図。1 is a schematic perspective view of an air duster according to a first embodiment of the present invention. 同エアダスタの内部構造を示す模式的な断面図。A typical sectional view showing an internal structure of the air duster. 同エアダスタの吸気側の構造を模式的に示す図。The figure which shows typically the structure by the side of the intake of the air duster. 同エアダスタの排気側の構造を模式的に示す図。The figure which shows typically the structure of the exhaust side of the same air duster. 同エアダスタを構成する遠心フィンの構造説明図。Structure explanatory drawing of the centrifugal fin which comprises the air duster. 同エアダスタの一使用状態を示す図。The figure which shows one use condition of the air duster. 同エアダスタの他の使用状態を示す図。The figure which shows the other use condition of the air duster. 同エアダスタのクリーナとしての使用状態を示す図。The figure which shows the use condition as a cleaner of the air duster. 本発明の変形例を示す模式図。The schematic diagram which shows the modification of this invention. 本発明の変形例を示す模式図。The schematic diagram which shows the modification of this invention. 本発明の第２実施形態に係るエアダスタの噴射ノズル装着前の模式的な斜視図。The typical perspective view before the injection nozzle mounting | wearing of the air duster which concerns on 2nd Embodiment of this invention. 同係るエアダスタの噴射ノズル装着時の模式的な斜視図。The typical perspective view at the time of the injection nozzle mounting | wearing of the air duster concerned. 同エアダスタの空気圧縮部を示す斜視図。The perspective view which shows the air compression part of the air duster. 同空気圧縮部を構成する１段分の遠心ファンを動翼及び静翼を分離させた状態で示す斜視図。The perspective view which shows the centrifugal fan for 1 step | paragraph which comprises the air compression part in the state which isolate | separated the moving blade and the stationary blade. 同空気圧縮部の組み立て状態を示す斜視図。The perspective view which shows the assembly state of the air compression part. 同空気圧縮部の作用を示す斜視図。The perspective view which shows the effect | action of the air compression part. 同空気圧縮部を構成する動翼と静翼の寸法関係を示す図。The figure which shows the dimensional relationship of the moving blade and stationary blade which comprise the air compression part. 同エアダスタの筐体とグリップの間に構成されたクリップ機構を示す図。The figure which shows the clip mechanism comprised between the housing | casing and grip of the air duster.
　以下、本発明の実施形態を、図面を参照して説明する。
（第１実施形態） Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
　図１は本実施形態の送風機であるエアダスタの外観を示す斜視図であり、図２は内部機構を表す模式図である。このエアダスタは、両端に開口１，４を有する本体部たる筐体５に、空気圧縮部２およびモータ３を内設するとともに、吸気側の開口１（以下、吸気口と称する）にキャップ１１を設け、排気側の開口４（以下、排気口と称する）に噴射ノズル４１を設けた構成からなる。 FIG. 1 is a perspective view showing an appearance of an air duster that is a blower of the present embodiment, and FIG. 2 is a schematic view showing an internal mechanism. In this air duster, an air compression unit 2 and a motor 3 are installed in a casing 5 as a main body having openings 1 and 4 at both ends, and a cap 11 is provided in an opening 1 on the intake side (hereinafter referred to as an intake port). And an injection nozzle 41 is provided in the exhaust side opening 4 (hereinafter referred to as an exhaust port).
　筐体５は筒状のもので、吸気口１と排気口４の間に流路５ａが形成され、図示しない遮音材が流路５ａの周囲を包むように筐体５の周壁に設けてある。例えば、筐体５を二重筒構造にして、内筒の外周に遮音材を巻き付け、その外周を外筒で覆うように構成したものが挙げられる。 The casing 5 has a cylindrical shape, and a flow path 5a is formed between the intake port 1 and the exhaust port 4, and a sound insulating material (not shown) is provided on the peripheral wall of the casing 5 so as to wrap around the flow path 5a. For example, the housing 5 has a double cylinder structure, and a sound insulating material is wound around the outer circumference of the inner cylinder, and the outer circumference is covered with the outer cylinder.
　モータ３は、排気口４に近い側に配置してあり、流路抵抗とならないように適宜のリブ構造（図示略）によって筐体５に固定されている。モータ３の出力軸３１は吸気口１側に延びており、その延出端３１ａ側に空気圧縮部２を構成している。 The motor 3 is disposed on the side close to the exhaust port 4 and is fixed to the housing 5 by an appropriate rib structure (not shown) so as not to cause flow path resistance. The output shaft 31 of the motor 3 extends to the intake port 1 side, and the air compression unit 2 is configured on the extended end 31a side.
　空気圧縮部２は、遠心ファン２１を所定間隔で５段連ねた構成からなる。具体的に説明すると、図２に示すようにこの遠心ファン２１は、筐体５内を円環状の仕切り板５１によって５つの部屋に区画し、各部屋ごとに図３に示す静翼２１ｂを固定し、その静翼２１ｂの内側に動翼２１ａを非接触に嵌め合わせることによって構成しており、動翼２１ａはモータ３の出力軸３１に一体回転可能に軸着され、静翼２１ｂはモータ３の出力軸３１を非接触で貫通させている。動翼２１ａには、内周から外周に向かって空気を送り出す翼車２１ａ１が設けてあり、静翼２１ｂには、動翼２１ａが送り出した空気を反対側の面に導く導出フィン２１ｂ１および反対側の面に導いた空気を外周から内周に向かって送り込む翼車２１ｂ２が設けてある。 The air compression unit 2 has a configuration in which the centrifugal fans 21 are connected in five stages at a predetermined interval. Specifically, as shown in FIG. 2, the centrifugal fan 21 divides the inside of the housing 5 into five rooms by an annular partition plate 51, and the stationary blade 21b shown in FIG. 3 is fixed for each room. The moving blade 21a is fitted inside the stationary blade 21b in a non-contact manner. The moving blade 21a is attached to the output shaft 31 of the motor 3 so as to be integrally rotatable. The output shaft 31 is penetrated without contact. The rotor blade 21a is provided with an impeller 21a1 that sends out air from the inner periphery toward the outer periphery, and the stationary blade 21b has a lead-out fin 21b1 that guides the air sent out by the rotor blade 21a to the opposite surface and the opposite side. There is provided an impeller 21b2 for sending air guided to the surface from the outer periphery toward the inner periphery.
　すなわち、図２及び図３等に空気の流れを符号ｆで示しているように、吸気口１に近い最初の遠心ファン２１に流れ込んだ空気は、動翼２１ａの中心へ誘導されて円周方向に噴出し（図３（ａ）参照）、導出フィン２１ｂ１によって静翼２１ｂ側に流れ込み（図３（ｂ）参照）、さらに静翼２１ｂを軸心に向かって流れ込んで次段の遠心ファン２１の動翼２１ａに案内される（図３（ｃ）参照）。このように、各段の遠心ファン２１によって次々に空気を圧縮することで圧縮空気を生成した後に、図２に示す終端の遠心ファン２１から圧縮空気を噴出する。 That is, as indicated by the symbol f in FIGS. 2 and 3 and the like, the air that has flowed into the first centrifugal fan 21 close to the air inlet 1 is guided to the center of the moving blade 21a and is circumferentially directed. (See FIG. 3A), flows into the stationary vane 21b side by the outlet fin 21b1 (see FIG. 3B), and further flows into the axial center of the stationary vane 21b. It is guided by the moving blade 21a (see FIG. 3C). In this way, after the compressed air is generated by compressing the air one after another by the centrifugal fans 21 of each stage, the compressed air is ejected from the terminal centrifugal fan 21 shown in FIG.
　静翼２１ｂの出口から次段の動翼２１ａの入口に至る流路間には、流路抵抗が大きくなることを避けるため、必要に応じて適宜の整流部（図示略）が設けられる。 An appropriate rectification unit (not shown) is provided between the flow paths from the exit of the stationary blade 21b to the entrance of the next-stage moving blade 21a in order to avoid an increase in flow resistance.
　吸気口１に設けられるキャップ１１は、図１及び図４等に示すように、吸気口１に対して着脱可能なカートリッジ構造をなしている。このキャップ１１には吸込み口となる開口部１１ａが設けてあり、内部に吸込み音を低減するための適宜のサイレンサ機構（図示略）が備わっている。 The cap 11 provided in the intake port 1 has a cartridge structure that can be attached to and detached from the intake port 1 as shown in FIGS. The cap 11 is provided with an opening 11a serving as a suction port, and an appropriate silencer mechanism (not shown) for reducing the suction sound is provided therein.
　この吸気口１にはまた、図４に示すように、着脱可能なカートリッジ構造の吸込ノズル１２が取り付け可能とされており、キャップ１１に代替して吸込ノズル１２を使用できるようにしている。この吸込ノズル１２は、扁平な長方形状の吸い込み開口１２ａから吸気口１への取付端部１２ｂに向かってラッパ状に広がった形状をなし、取付端部１２ｂ近傍の開口部にフィルタ１２１が交換可能に内設してある。 As shown in FIG. 4, a suction nozzle 12 having a detachable cartridge structure can be attached to the suction port 1, and the suction nozzle 12 can be used in place of the cap 11. The suction nozzle 12 has a shape that expands in a trumpet shape from the flat rectangular suction opening 12a toward the attachment end 12b to the intake port 1, and the filter 121 can be replaced with an opening near the attachment end 12b. It is installed inside.
　他方、排気口４に設けられる噴射ノズル４１は、図５に示すように、排気口４に対して着脱可能なカートリッジ構造をなしている。噴射ノズル４１の内部には圧縮空気を円滑に且つ圧縮して噴き出せるように、テーパ状のエア導出部４１ａが設けてある。排気口４には、前記噴射ノズル４１とは別に、当該噴射ノズル４１よりも流路抵抗を削減して噴射圧を高めるために噴出口４２ｂを小さくし且つノズル全長を長くしてテーパ角度をより浅くしたエア導出部４２ａを備えてなる他の噴射ノズル４２や、逆に噴射圧を低めるために噴出口を大きくし且つテーパ角度を深くした更に他の噴射ノズル（図示略）などが選択的に取り付け可能としてある。噴射ノズル４１、４２等の先端には、狭い場所に適用する際にストロー状の噴射口（図示省略）を着脱可能に取り付けることができるようにしている。勿論、このようなストロー状の噴射口を一体に備えた噴射ノズルを構成してもよい。 On the other hand, the injection nozzle 41 provided in the exhaust port 4 has a cartridge structure that can be attached to and detached from the exhaust port 4 as shown in FIG. A tapered air outlet 41a is provided inside the injection nozzle 41 so that the compressed air can be smoothly compressed and ejected. In addition to the injection nozzle 41, the exhaust port 4 has a smaller taper angle by reducing the outlet 42 b and increasing the total length of the nozzle in order to reduce the flow path resistance and increase the injection pressure. Other injection nozzles 42 having a shallow air outlet 42a, or other injection nozzles (not shown) with a larger outlet and a deeper taper angle to reduce the injection pressure are selectively used. It can be attached. A straw-like spray port (not shown) can be detachably attached to the tips of the spray nozzles 41, 42 and the like when applied to a narrow place. Of course, you may comprise the injection nozzle provided integrally with such a straw-shaped injection port.
　このようなエアダスタは、図６に示すように噴射ノズル４１（４２）を前方に向けてエアダスタとして利用する時と図８に示すように吸込ノズル１２を前方に向けてクリーナとして利用する時とで使い勝手が逆になるため、図１及び図２にも示すように、筐体５の中央付近から鉛直下方に向けて風量調整スイッチ６１、６２、主電源スイッチ６３及び制御部８を組み込んだハンドル６を突出して設け、さらにハンドル６の先端部分に電池部７を備えている。図８において符号４ａで示すものは、排気口４の内部に異物が進入することを防止するリブであり、このようなリブは吸込ノズル１２を取り除いた位置に表出する吸気口１にも設けてあって、図１等においてキャップ１１を取り除いた際にも表出するものである。 Such an air duster is used when the spray nozzle 41 (42) is directed forward as shown in FIG. 6 and used as a cleaner as shown in FIG. 8 and when the suction nozzle 12 is directed forward as shown in FIG. Since the usability is reversed, as shown in FIGS. 1 and 2, the handle 6 incorporating the air volume adjustment switches 61 and 62, the main power switch 63, and the control unit 8 from the vicinity of the center of the housing 5 downward vertically. And a battery part 7 at the tip of the handle 6. In FIG. 8, reference numeral 4 a denotes a rib that prevents foreign matter from entering the inside of the exhaust port 4, and such a rib is also provided in the intake port 1 that is exposed at a position where the suction nozzle 12 is removed. Therefore, it appears even when the cap 11 is removed in FIG.
　ハンドル６は、寸胴状に成形されたもので、風量調整スイッチ６１、６２はハンドル６の付け根付近の前後両端面６ａ、６ｂに配置され、主電源スイッチ６３はハンドル６の前後両端面６ａ、６ｂの間に位置する側面６ｃに配置されている。風量調整スイッチ６１、６２は、指の押し込み量に応じて操作量を入力するものであり、主電源スイッチ６３は入力としてオンオフの２位置を切り換え可能なタイプのものである。この風量調整スイッチ６１、６２と主電源スイッチ６３は、筐体５のモータ３に制御部８を介して接続されている。 The handle 6 is formed in a cylindrical shape, and the air volume adjustment switches 61 and 62 are disposed on the front and rear end surfaces 6a and 6b near the base of the handle 6, and the main power switch 63 is disposed on the front and rear end surfaces 6a and 6b. It is arrange | positioned at the side surface 6c located between. The air volume adjustment switches 61 and 62 are used to input an operation amount in accordance with the pressing amount of the finger, and the main power switch 63 is a type capable of switching between two on / off positions as an input. The air volume adjustment switches 61 and 62 and the main power switch 63 are connected to the motor 3 of the housing 5 via the control unit 8.
　電池部７は、モータ３に給電するためのもので、ニッカド電池やニッケル水素電池等の充電タイプの二次電池や、アルカリなどの使い捨て電池の利用を可能としている。 The battery unit 7 is for supplying power to the motor 3, and can use a rechargeable secondary battery such as a nickel cadmium battery or a nickel metal hydride battery, or a disposable battery such as an alkali.
　制御部８は、電池部７から給電を受けるとともに、各スイッチ６１、６２、６３からの操作量の入力を受け、主電源スイッチ６３のオンオフに応じてモータ３の断接状態を切り替えるとともに、風量調整スイッチ６１、６２の操作量（押し込み量）に応じてモータ３への通電量すなわち回転数を無段階で変化させる。この場合、主電源スイッチ６３がオン状態にあれば、何れの風量調整スイッチ６１、６２を操作してもモータ３に操作量に応じた通電がなされるように構成されている。 The control unit 8 receives power from the battery unit 7, receives operation amount inputs from the switches 61, 62, and 63, switches the connection / disconnection state of the motor 3 according to the on / off state of the main power switch 63, and In accordance with the operation amount (push-in amount) of the adjustment switches 61 and 62, the energization amount to the motor 3, that is, the rotation speed is changed steplessly. In this case, if the main power switch 63 is in the ON state, the motor 3 is configured to be energized according to the operation amount regardless of which air volume adjustment switch 61, 62 is operated.
　このように構成される本実施形態をエアダスタとして用いるには、図６に示すようにまずハンドル６の付け根付近を手で握り、握った拳の上に筐体５の下面側を載せ置き、噴射ノズル４１（４２）を前方に向ける。これと前後して、主電源スイッチ６３（図１参照）を入れてモータ３を駆動可能な状態にする。そして、人差し指でスイッチ６１を押し、押し込み量を任意に調整すれば、所要の噴射力を得ることができる。 In order to use this embodiment configured as described above as an air duster, as shown in FIG. 6, first, the vicinity of the base of the handle 6 is gripped by hand, the lower surface side of the housing 5 is placed on the gripped fist, and the injection is performed. The nozzle 41 (42) is directed forward. Before and after this, the main power switch 63 (see FIG. 1) is turned on so that the motor 3 can be driven. And if switch 61 is pushed with an index finger and the amount of pushing is adjusted arbitrarily, required injection power can be obtained.
　また、図７には、親指でスイッチ６２を押す例を示している。この場合も図６と同様の作動を得ることが可能であり、使用対象や使用場所によってこのような持ち手の方が便利な場合にスイッチ６２を利用可能である。 FIG. 7 shows an example in which the switch 62 is pushed with the thumb. In this case as well, it is possible to obtain the same operation as that in FIG. 6, and the switch 62 can be used when such a handle is more convenient depending on the use object and the use place.
　一方、クリーナとして用いるには、図４に示すように吸気口１に取り付けたキャップ１１を取り外して新たに吸込ノズル１２を取り付け、図５に示す排気口４側の噴射ノズル４１（４２）を取り外して、図６に示すエアダスタ使用時とは前後反対の持ち手となるよう、図８に示すようにハンドル６を持ち変える。そして、エアダスタ使用時と同様に、人差し指でスイッチ６２若しくは親指でスイッチ６１を押して押し込み量を調整すれば、使用対象や使用場所に適し、適切な操作のもとに所要の吸引力を得ることができる。 On the other hand, in order to use as a cleaner, as shown in FIG. 4, the cap 11 attached to the intake port 1 is removed and a new suction nozzle 12 is attached, and the injection nozzle 41 (42) on the exhaust port 4 side shown in FIG. 5 is removed. Then, the handle 6 is changed as shown in FIG. 8 so as to be a handle opposite to the front / rear direction when the air duster shown in FIG. 6 is used. Similarly to when using an air duster, if the push amount is adjusted by pressing the switch 62 with the index finger or the switch 61 with the thumb, the required suction force can be obtained under an appropriate operation suitable for the use object and place of use. it can.
　以上のように、本発明におけるエアダスタは、一対の開口（吸気口１、排気口４）を有し両開口１、４の間に流路５ａを形成した筐体５と、該筐体５の内部に備えられたモータ３と、該モータ３の軸心と一体に回転し軸心方向に空気を吸い込んで円周方向に吹き出す動翼２１ａおよび当該動翼２１ａから吹き出した空気を再度軸心に向かって案内する静翼２１ｂを組み合わせた遠心ファン２１を前記モータ３の軸心に沿って多段に連ねてなる空気圧縮部２と、筐体５の排気口４に設けた噴射ノズル４１とを具備してなり、モータ３を作動させることによって吸気口１から周辺の空気を吸い込み、空気圧縮部２で圧縮空気を生成し、排気口４に設けた噴射ノズル４１から圧縮空気を噴射し得るように構成したものである。 As described above, the air duster according to the present invention includes a housing 5 having a pair of openings (intake port 1 and exhaust port 4) and a flow path 5 a formed between the openings 1 and 4, and the housing 5. The motor 3 provided inside, the moving blade 21a that rotates integrally with the shaft center of the motor 3, sucks air in the axial direction, and blows it out in the circumferential direction, and the air blown out from the moving blade 21a as the shaft center again. A centrifugal fan 21 combined with stationary vanes 21b that are guided toward the air compressor 2 is provided in a multi-stage manner along the axis of the motor 3; and an injection nozzle 41 provided in the exhaust port 4 of the housing 5. Thus, by operating the motor 3, ambient air is sucked from the intake port 1, compressed air is generated by the air compression unit 2, and compressed air can be injected from the injection nozzle 41 provided in the exhaust port 4. It is composed.
　このため、電力消費以外にランニングコストがかからずに、ガスを用いたスプレー缶タイプのエアダスタに比べて遙かに安価に利用することができる。その上、特別なガスではなく周辺の空気を利用するだけであるので、有害で危険な可燃性ガスを発生させず、缶の製造や廃棄も不要となり、温室効果を伴うこともないため、環境に優しいエアダスタとしての利用価値を有する。また、遠心ファン２１を多段状に連ねて空気圧縮部２を構成するにあたり、遠心ファン２１の段数や噴射ノズル４１（４２）の形状等の設計を通じ、空気の圧縮率や噴射ノズル４１（４２）からの噴射力を効率良く高めることができる。 Therefore, it can be used at a lower cost than a spray can type air duster using gas without incurring running costs other than power consumption. In addition, it uses only ambient air instead of special gases, so it does not generate harmful and dangerous flammable gases, no cans need to be manufactured or disposed of, and it does not have a greenhouse effect. Useful as an air-duster that is friendly to the environment. Further, when the centrifugal fan 21 is connected in multiple stages to form the air compression unit 2, the compression ratio of the air and the injection nozzle 41 (42) are determined by designing the number of stages of the centrifugal fan 21 and the shape of the injection nozzle 41 (42). The injection force from can be efficiently increased.
　そして、噴射ノズル４１が排気口４に対して着脱可能なカートリッジ構造をなしているので、必要な噴射圧に応じて噴射ノズル４１、４２を交換するなどして口径の変更を行うことができ、また、塵芥や埃などで噴射口４や噴射ノズル４１が詰まった場合のメンテナンス等も容易に行うことができる。 And since the injection nozzle 41 has a cartridge structure that can be attached to and detached from the exhaust port 4, the diameter can be changed by replacing the injection nozzles 41 and 42 according to the required injection pressure, In addition, maintenance and the like when the injection port 4 and the injection nozzle 41 are clogged with dust or dust can be easily performed.
　さらに、吸気口１にもカートリッジ構造の吸込ノズル１２を着脱可能に取り付け得るようにしているので、噴射ノズル４１を取り外して使用すれば、エアダスタだけでなくクリーナとしても利用することができる。 Furthermore, since the suction nozzle 12 having a cartridge structure can be detachably attached to the intake port 1, if the injection nozzle 41 is removed and used, it can be used not only as an air duster but also as a cleaner.
　また、吸気口１と排気口４とが逆の位置関係をなすように持ち替えた際に同じ指掛かりとなる位置に、それぞれ吸込時のモータ３の回転数を主として制御する風量調整スイッチ６１及び噴射時のモータ３の回転数を主として制御する風量調整スイッチ６２を備えているので、エアダスタとして使用する際にも、前後反転してクリーナとして使用する際にも、違和感を覚えることなく適切な位置に存する風量調整スイッチ６１、６２を操作することができる。 In addition, an air volume adjustment switch 61 and an injection that mainly control the number of revolutions of the motor 3 at the time of suction, respectively, are placed at positions where the same finger is caught when the intake port 1 and the exhaust port 4 are switched so as to have an opposite positional relationship. Since the air volume adjustment switch 62 that mainly controls the rotation speed of the motor 3 at the time is provided, it can be used in an appropriate position without feeling uncomfortable when used as an air duster or when it is used as a cleaner by reversing forward and backward. The existing air volume adjustment switches 61 and 62 can be operated.
　しかも、何れの風量調整スイッチ６１、６２も、吸込時および噴出時の双方に共用可能としているため、エアダスタやクリーナとして使用する際の持ち方や適用対象に応じて、風量調整スイッチ６１、６２のうち何れか適切な方を用いることができ、使い勝手の向上を図ることができる。 Moreover, since any of the air volume adjustment switches 61 and 62 can be used for both suction and ejection, the air volume adjustment switches 61 and 62 can be used in accordance with the holding method and application object when used as an air duster or cleaner. Any one of them can be used, and usability can be improved.
　並びに、吸込み側の流路５ａを塞ぐ位置に着脱可能にフィルタ１２１を設けているので、筐体５へ塵芥や埃が流入することを防ぐことができ、フィルタ１２１の掃除や交換も容易ならしめることができる。 In addition, since the filter 121 is detachably provided at a position closing the suction-side flow path 5a, dust and dust can be prevented from flowing into the housing 5, and the filter 121 can be easily cleaned and replaced. be able to.
　そして、吸気側に吸い込み音を低減するサイレンサが設けてあるので、エアダスタ使用時等における騒音を低減して、使用者や周囲に対して不快感を与えることを防止することができる。 And, since the silencer for reducing the suction sound is provided on the intake side, it is possible to reduce the noise when using the air duster and prevent the user and the surroundings from being uncomfortable.
　また、流路５ａの周囲を包む位置に遮音材を設けているので、同様にエアダスタ等として使用する時の騒音を抑制し、使用者や周囲に対して不快感を与えることを防止することができる。 Moreover, since the sound insulating material is provided at the position surrounding the periphery of the flow path 5a, it is possible to similarly suppress noise when used as an air duster or the like, and to prevent discomfort to the user and the surroundings. it can.
　さらに、前記筐体５に搭載されたモータ３が、仮に空気圧縮部２よりも吸い込み側に位置している場合には流路５ａが狭くなって大きな吸い込み抵抗となるが、本実施形態では空気圧縮部２よりも空気流路５ａの下流側に位置する構造を採用しているので、流路５ａが狭くなっても圧縮により体積の小さくなった空気にとって流路抵抗となることが少ない。このため、モータ３の設置と圧縮空気のスムーズな流れを好適に両立させることができる。 Furthermore, if the motor 3 mounted on the housing 5 is positioned on the suction side with respect to the air compression unit 2, the flow path 5a is narrowed to provide a large suction resistance. Since the structure located on the downstream side of the air flow path 5a with respect to the compression unit 2 is adopted, even if the flow path 5a becomes narrow, there is little flow path resistance for air whose volume is reduced by compression. For this reason, installation of the motor 3 and the smooth flow of compressed air can be made to make compatible suitably.
　以上、本発明の一実施形態について図面に基づいて説明したが、各部の具体的な構成は上述した実施形態のみに限定されるものではない。 As mentioned above, although one Embodiment of this invention was described based on drawing, the specific structure of each part is not limited only to embodiment mentioned above.
　例えば、上記の一実施形態では、空気圧縮部２での遠心ファン２１を５段に連ねて構成したが、これは数値限定するものではなく、所要の圧縮率に応じて遠心ファン２１の数を増減する設計が可能である。 For example, in the above-described embodiment, the centrifugal fans 21 in the air compression unit 2 are configured to be connected in five stages. However, this is not limited to numerical values, and the number of the centrifugal fans 21 is set according to a required compression rate. The design to increase or decrease is possible.
　また、上記実施形態では、図９（ａ）にも示すように、制御部８をハンドル６内部に、電池部７をハンドル６の先端にそれぞれ設ける構成で説明したが、図９（ｂ）に示すように、電池部７を別個に設けて電源ケーブル７１によって接続するようにしてもよく、また、図９（ｃ）に示すように、ハンドル６の内部に電池部７及び制御部８を組み込んで構成しても良い。さらに、図９（ｄ）に示すように、ハンドル６の内部に電池部７を、筐体５に制御部８をそれぞれ設けたり、図１０（ａ）に示すように、電池部７を廃してＡＣコンセント７２及び電源ケーブル７１によって給電が可能なようにしてもよい。また、図１０（ｂ）に示すように、ハンドル６と電池部７を廃して筐体５に制御部８を設け、ＡＣコンセント７２及びケーブル７１によって給電可能とする構成や、同様に図１０（ｃ）に示すように、ハンドル６を廃して筐体５に制御部８を設け、電池部７をケーブル７１を介して別個に設ける構成も考えられる。さらにまた、上記の電池部７（バッテリ）を、ＡＣコンセントを介して家庭用電源等に接続可能に構成して、接続時には家庭用電源等の電力でエアダスタを駆動し、非接続時には電池部７に充電された電力でエアダスタを駆動するように構成することもできる。 In the above embodiment, as shown in FIG. 9 (a), the control unit 8 is provided inside the handle 6 and the battery unit 7 is provided at the tip of the handle 6. However, FIG. As shown in FIG. 9, the battery unit 7 may be provided separately and connected by the power cable 71, and the battery unit 7 and the control unit 8 are incorporated in the handle 6 as shown in FIG. You may comprise. Further, as shown in FIG. 9 (d), the battery unit 7 is provided inside the handle 6, and the control unit 8 is provided in the casing 5, or the battery unit 7 is eliminated as shown in FIG. 10 (a). Power may be supplied through the AC outlet 72 and the power cable 71. Further, as shown in FIG. 10B, the handle 6 and the battery unit 7 are eliminated, the control unit 8 is provided in the housing 5, and power can be supplied by the AC outlet 72 and the cable 71. As shown in c), a configuration in which the handle 6 is eliminated and the control unit 8 is provided in the housing 5 and the battery unit 7 is separately provided via the cable 71 is also conceivable. Furthermore, the battery unit 7 (battery) is configured to be connectable to a household power source or the like via an AC outlet so that the air duster is driven by power from the household power source or the like when connected, and the battery unit 7 when disconnected. The air duster can also be configured to be driven by the electric power charged in the battery.
　また、上記実施形態では、クリーナとして使用する場合に、吸込ノズル１２にフィルタ１２１を設けたが、本体部にフィルタを設け、噴射ノズルから圧縮空気を噴射するエアダスタとして使用する際にもフィルタが機能するように構成することも考えられる。 Moreover, in the said embodiment, when using as a cleaner, the filter 121 was provided in the suction nozzle 12, However, A filter functions also when providing a filter in a main-body part and using it as an air duster which injects compressed air from an injection nozzle. It is also conceivable to configure so as to.
　さらに、上記実施形態における風量調整スイッチ６１、６２を、指の押し込み量に応じて無段階に操作量を入力するスライドボリュームタイプのものとしたが、他にも段階的に風量を制御するタイプや、単なるオンオフ制御のタイプを採用することもできる。
（第２実施形態） Furthermore, although the air volume adjustment switches 61 and 62 in the above embodiment are of a slide volume type that inputs the operation amount in a stepless manner according to the amount of pressing of the finger, other types that control the air flow in stages are also available. A simple on / off control type can also be employed.
(Second Embodiment)
　図１１に他の実施形態の送風機であるエアダスタを示す。このエアダスタも、一対の開口（吸気口１０１、排気口１０４）を有し両開口１０１、１０４の間に流路１０５ａを形成した筐体１０５と、該筐体１０５の内部に備えられたモータ１０３と、このモータ１０３を動力とする空気圧縮部１０２とを具備してなり、モータ１０３を作動させることによって吸気口１０１から周辺の空気を吸い込み、空気圧縮部１０２で圧縮空気を生成し、排気口１０４から圧縮空気を噴射し得るように構成される。筐体１０５にはグリップ（ハンドル）１０６が取り付けてありる。筐体１０５は図１２に示すようにクリック機構１０９を介してグリップ１０６に対して回転する。 FIG. 11 shows an air duster that is a blower of another embodiment. This air duster also has a pair of openings (intake port 101, exhaust port 104) and a passage 105a formed between the openings 101 and 104, and a motor 103 provided inside the case 105. And an air compression unit 102 powered by the motor 103. By operating the motor 103, ambient air is sucked from the intake port 101, compressed air is generated by the air compression unit 102, and the exhaust port It is comprised so that compressed air can be injected from 104. FIG. A grip (handle) 106 is attached to the housing 105. The housing 105 rotates with respect to the grip 106 via a click mechanism 109 as shown in FIG.
　排気口１０４は、テーパ形状（ホーン形状）を有してそれ自体が固定噴射ノズルをなしており、この排気口１０４に付属の噴射ノズル１４１が着脱可能とされている。噴射ノズル１４１は不使用時に筐体１０５に設けたホルダ１０５ｈに着脱可能に保持される。 The exhaust port 104 has a tapered shape (horn shape) and itself forms a fixed injection nozzle, and an attached injection nozzle 141 can be attached to and detached from the exhaust port 104. The injection nozzle 141 is detachably held by a holder 105h provided in the housing 105 when not in use.
　空気圧縮部１０２も、基本的には前記実施形態と同様である。すなわち、この実施形態の空気圧縮部１０２も、図１３に示すように遠心ファン１２１を所定間隔で５段連ねた構成からなり、空気流路の下流に位置する図１１のモータ１０３によって駆動される。筐体１０５は図１３に示すように上下の半割構造をなし、筐体１０５を突き合わせた際に筐体１０５内に円環状の仕切り板１５１によって５つの部屋が形成されて、各遠心ファン１２１はそれぞれ各部屋に収容される。動翼１２１ａはモータ１０３の出力軸１３１に一体回転可能に軸着され、静翼１２１ｂはモータ１０３の出力軸１３１を非接触で貫通させる。 The air compression unit 102 is basically the same as that in the above embodiment. That is, the air compression unit 102 of this embodiment also has a configuration in which five centrifugal fans 121 are connected at predetermined intervals as shown in FIG. 13, and is driven by the motor 103 in FIG. 11 located downstream of the air flow path. . As shown in FIG. 13, the housing 105 has an upper and lower halved structure, and when the housing 105 is abutted, five chambers are formed in the housing 105 by the annular partition plate 151. Is housed in each room. The rotor blade 121a is pivotally attached to the output shaft 131 of the motor 103 so as to be integrally rotatable, and the stationary blade 121b penetrates the output shaft 131 of the motor 103 in a non-contact manner.
　翼構造について詳述すると、動翼１２１ａは、図１４に示すように内周から外周に向かって螺旋を描いて放射状に広がる多数の翼車１２１ａ１を備え、これらの翼車１２１ａ１が一対の面板１２１ａ２、１２１ａ３によって一体的にサンドイッチされている。一方の面板１２１ａ２の軸心位置にはモータ１０３の出力軸１３１よりも大きい孔が、他方の面板１２１ａ２の軸心位置にはモータ１０３の出力軸１３１と嵌合する孔がそれぞれ設けられている。 Describing in detail the blade structure, the moving blade 121a includes a large number of impellers 121a1 that spirally extend from the inner periphery to the outer periphery as shown in FIG. , 121a3. A hole larger than the output shaft 131 of the motor 103 is provided at the axial center position of the one face plate 121a2, and a hole for fitting with the output shaft 131 of the motor 103 is provided at the axial position of the other face plate 121a2.
　一方、静翼１２１ｂには、面板１２１ｂ３の一方の面における中心から所定半径ｒ１以上の位置に円周方向に沿って配列されたディフューザ１２１ｂ１（前記実施形態の導出フィン２１ｂ１に相当）と、面板１２１ｂ３の他方の面に螺旋を描いて外周から内周に至る戻り羽根１２１ｂ２（前記実施形態の翼車２１ｂ２に相当）とが設けてある。 On the other hand, the stationary blade 121b includes a diffuser 121b1 (corresponding to the lead-out fin 21b1 in the above embodiment) and a face plate 121b3 arranged along the circumferential direction at a position of a predetermined radius r1 or more from the center of one face of the face plate 121b3. A return blade 121b2 (corresponding to the impeller 21b2 of the above-described embodiment) is provided on the other surface.
　そして、動翼１２１ａの中心から外周までの径ｒ２は前記静翼１２１ｂの所定半径ｒ１よりも小径とされ、また動翼１２１ａの軸方向寸法ｄ又はその一部の寸法を静翼１２１ｂの軸方向寸法ｈ又はその一部の寸法に関連づける設定をして、静翼１２１ｂのディフューザ１２１ｂ１の内径側に存する空洞部Ｓに、図１５に示すように軸心方向に沿って動翼１２１ａを収納している。 The diameter r2 from the center to the outer periphery of the moving blade 121a is smaller than the predetermined radius r1 of the stationary blade 121b, and the axial dimension d of the moving blade 121a or a part thereof is the axial direction of the stationary blade 121b. As shown in FIG. 15, the rotor blade 121a is accommodated in the hollow portion S existing on the inner diameter side of the diffuser 121b1 of the stationary blade 121b with the setting related to the dimension h or a part of the dimension. Yes.
　より詳細には、図１７（ａ）に示すように、動翼１２１ａは静翼１２１ｂに対し軸方向に沿って微小なクリアランスＣの下に配置されるが、動翼１２１ａのうち翼車１２１ａ１の高さと一方の面板１２１ａ３の厚みを加えた寸法ｄ１がディフューザ１２１ｂの高さｈ１にほぼ合致していれば（ｄ１＝ｈ）、動翼１２１ａの翼車１２１ａ１に沿って一対の面板１２１ａ２、１２１ａ３の間に形成される開口ＯＰの直ぐ出口に少なくとも静翼１２１ｂのディフューザ１２１ｂ１が相対し、しかも動翼１２１ａの軸方向寸法ｄを最小にとどめる条件を成立させることができるので、コンパクトにして開口ＯＰから出た空気をディフューザ１２１ｂに効率良く補足させて圧縮に供することができるものである。 More specifically, as shown in FIG. 17A, the moving blade 121a is disposed below the minute clearance C along the axial direction with respect to the stationary blade 121b. If the dimension d1 obtained by adding the height and the thickness of one face plate 121a3 substantially matches the height h1 of the diffuser 121b (d1 = h), the pair of face plates 121a2 and 121a3 along the impeller 121a1 of the moving blade 121a. The condition that at least the diffuser 121b1 of the stationary blade 121b is opposed to the immediate outlet of the opening OP formed between them and the axial dimension d of the moving blade 121a is minimized can be satisfied. The discharged air can be efficiently captured by the diffuser 121b and used for compression.
　或いは、これに準じて、同図（ｂ）に示すように、動翼１２１ａを構成する翼車１２１ａ１の高さと両面板１２１ａ２、１２１ａ３の厚みを加えたトータルの寸法ｄ２がディフューザ１２１ｂの高さｈ１にほぼ合致するかそれ以下となるように構成しても（ｄ２≦ｈ１）、同図（ａ）の場合と同様の作用効果を奏することができる。 Alternatively, according to this, as shown in FIG. 5B, the total dimension d2 obtained by adding the height of the impeller 121a1 constituting the moving blade 121a and the thickness of the double-sided plates 121a2 and 121a3 is the height h1 of the diffuser 121b. Even if it is configured so as to be substantially equal to or less than (d2 ≦ h1), the same effect as in the case of FIG.
　さらに、同図（ｃ）に示すように、動翼１２１ａの軸方向寸法ｄを静翼１２１ｂの軸方向寸法ｈにほぼ合致するように構成した場合でも、ディフューザ１２１ｂが動翼１２１ａの開口ＯＰに僅かに相対しない部分ができるものの、圧縮効率を大きく落とさずに静翼１２１ｂからの動翼１２１ａの軸方向への突出量を抑えることができる。 Furthermore, as shown in FIG. 5C, even when the axial dimension d of the moving blade 121a is configured to substantially match the axial dimension h of the stationary blade 121b, the diffuser 121b is located at the opening OP of the moving blade 121a. Although there is a slightly non-opposed portion, the amount of protrusion of the moving blade 121a from the stationary blade 121b in the axial direction can be suppressed without greatly reducing the compression efficiency.
　実際には動翼１２１ａと静翼１２１ｂとの間には軸方向のクリアランスが必要なため、これを考慮して、同図（ａ）ではｄ１＋Ｃ＝ｈ１となるように、また同図（ｂ）ではＤ２＋Ｃ≦ｈ１となるように、さらに同図（ｃ）ではｄ＋Ｃ＝ｈとなるように各部の寸法関係を設定することも有効である。 Actually, since a clearance in the axial direction is necessary between the moving blade 121a and the stationary blade 121b, in consideration of this, d1 + C = h1 in FIG. It is also effective to set the dimensional relationship of each part so that D2 + C ≦ h1 and d + C = h in FIG.
　何れにせよ、これらのように構成すると、図２及び図３等に符号ｆで示した空気の流れと同様に、本実施形態の空気圧縮部も、図１３及び図１６に示すように、吸気口１に近い最初の遠心ファン２１に空気を流入させて動翼１２１ａの中心へ誘導し（矢印Ｔ１）、翼車１２１a１により運動エネルギを与えて開口ＯＰから円周方向に噴出させ（矢印Ｔ２）、その位置に存する静翼１２１ｂのディフューザ１２１ｂ１によって運動エネルギを圧力エネルギに変換した後に外周側から反対側の面に移送して（矢印Ｔ３）、そこから戻り羽根１２１ｂ２によって静翼２１ｂの軸心方向に戻した後（図３（ｃ）参照）、次段の遠心ファン２１の動翼２１ａに案内される（図１６矢印Ｔ４）。このように、各段の遠心ファン２１によって次々に空気を圧縮することで圧縮空気を生成した後、図１３に示すように終端の遠心ファン２１から圧縮空気を噴出する（Ｔ５）。 In any case, when configured as described above, the air compression unit of the present embodiment, as shown in FIG. 13 and FIG. Air is introduced into the first centrifugal fan 21 close to the mouth 1 and guided to the center of the moving blade 121a (arrow T1), and kinetic energy is given by the impeller 121a1 to be ejected from the opening OP in the circumferential direction (arrow T2). Then, the kinetic energy is converted into pressure energy by the diffuser 121b1 of the stationary blade 121b existing at that position, and then transferred from the outer peripheral side to the opposite surface (arrow T3). After returning to (see FIG. 3C), it is guided to the moving blade 21a of the centrifugal fan 21 at the next stage (arrow T4 in FIG. 16). Thus, after compressing air one after another by the centrifugal fan 21 of each stage, compressed air is generated from the centrifugal fan 21 at the end as shown in FIG. 13 (T5).
　なお、この実施形態のエアダスタは、図１２に示したように筐体１０５とグリップ１０６との間が回転動作を通じて使用状態と折り畳み状態とに選択的に切り替えて可能なもので、図１８及び図１９に模式的に示すクリック切替機構１０９がグリップ１０６の付け根において筐体１０５に属する接続部１５０とグリップ１０６に属する接続部１６０との間に構成されている。 The air duster of this embodiment can be selectively switched between a use state and a folded state through a rotation operation between the housing 105 and the grip 106 as shown in FIG. A click switching mechanism 109 schematically shown in FIG. 19 is formed between the connection portion 150 belonging to the housing 105 and the connection portion 160 belonging to the grip 106 at the base of the grip 106.
　このクリック切替機構１０９は、接続部１５０に設けられた軸受部１９１と、接続部１６０側に設けられた軸部１９１ｃ、クリック係合部１９２ｂ１および突起１９２ａとから構成される。軸受部１９１は、ストッパ１９１ａとリング状のクリック体（バネ体）１９１ｂとボス孔（摺動孔）１９１ｃとを周回状に連ねたもので、クリック体１９１ｂにはクリック用突起１９１ｂ１が一体に突設されちえる。回動軸心ｍ方向に沿ってこの軸受部１９１に相対する接続部１６０側において、上記ボス孔１９１ｃと嵌合する位置に軸部１９２ｃを設け、上記クリック用突起１９１ｂ１が係合するクリック係合部１９２ｂ１を設け、上記ストッパ１９１ａと所定の回動範囲における回動端で係合する突起１９２ａを設けている。 The click switching mechanism 109 includes a bearing portion 191 provided in the connection portion 150, a shaft portion 191c provided on the connection portion 160 side, a click engagement portion 192b1, and a protrusion 192a. The bearing portion 191 includes a stopper 191a, a ring-shaped click body (spring body) 191b, and a boss hole (sliding hole) 191c connected in a circular shape, and the click protrusion 191b1 projects integrally with the click body 191b. It can be set up. On the connecting portion 160 side facing the bearing portion 191 along the rotation axis m, a click portion 192c is provided at a position where it is fitted with the boss hole 191c, and the click protrusion 191b1 is engaged. A portion 192b1 is provided, and a protrusion 192a that engages with the stopper 191a at a rotation end in a predetermined rotation range is provided.
　すなわち、グリップ１０６が筐体１０５に対して正逆方向に相対回転したとすると、突起１９２ａが軸受部１９１の何れかのストッパ１９１ａに突き当たり、このときクリック係合部１９２ｂ１がクリック用突起１９１ｂ１を乗り越えた位置に係合してグリップ１０６の回転位置を保持するので、グリップ１０６と筐体１０５との相対関係を使用状態又は折り畳み状態に安定的に保持することができる。 That is, assuming that the grip 106 rotates relative to the housing 105 in the forward and reverse directions, the protrusion 192a hits one of the stoppers 191a of the bearing portion 191, and at this time, the click engagement portion 192b1 gets over the click protrusion 191b1. The rotational position of the grip 106 is held by engaging with the position, so that the relative relationship between the grip 106 and the housing 105 can be stably held in the use state or the folded state.
　そして、かかる構成により、グリップ１０６の回動に対してクリック感を与えるクリック体１９１ｂの外周側でなく内周側で回動範囲を規制する回り止めを行なうことで、クリック式の軸受構造のコンパクト化を図ることができ、しかも本実施形態ではストッパ１９１ａとボス孔１９１ｃとクリック体１９１ｂが１つの軸受部１９１で構成され、グリップ１０６側では上記軸部１９１ｃ、クリック係合部１９２ｂ１および突起１９２ａを当該グリップ１０６のカバー等に一体成型すれば、部品点数の有効な削減を図ることができる。 With this configuration, the click-type bearing structure is compact by providing a detent that restricts the rotation range not on the outer peripheral side but on the inner peripheral side of the click body 191b that gives a click feeling to the rotation of the grip 106. In addition, in this embodiment, the stopper 191a, the boss hole 191c, and the click body 191b are configured by one bearing portion 191. On the grip 106 side, the shaft portion 191c, the click engagement portion 192b1, and the protrusion 192a are provided. If it is integrally formed on the cover of the grip 106, the number of parts can be effectively reduced.
　勿論、軸受部１９１をグリップ１０６側に設け、軸部１９１ｃ、クリック係合部１９２ｂ１および突起１９２ａを筐体１０５側に設けた逆の構成によっても事情は全く同様である。 Of course, the situation is completely the same by the reverse configuration in which the bearing portion 191 is provided on the grip 106 side and the shaft portion 191c, the click engagement portion 192b1, and the protrusion 192a are provided on the housing 105 side.
　以上のように構成される本実施形態は、特に空気圧縮部１０２の構成に関して、静翼１２１ｂの少なくとも一方の面に、動翼１２１ａから空気に与えられる運動エネルギを圧力エネルギに変換するディフューザ１２１ｂ１を設けたので、動翼１２１ａから空気に与えた運動エネルギーをロスなく確実に空気に溜め込んで圧縮率を高めることができる。 In the present embodiment configured as described above, the diffuser 121b1 that converts the kinetic energy given to the air from the moving blade 121a into pressure energy is provided on at least one surface of the stationary blade 121b, particularly with respect to the configuration of the air compression unit 102. Since it provided, the kinetic energy given to the air from the moving blade 121a can be reliably stored in the air without loss and the compression rate can be increased.
　しかも、静翼１２１ｂは更に他方の面に、ディフューザ１２１ｂ１から導出されて他方の面に回り込んだ空気を軸心に向かって案内する戻り羽根１２１ｂ２を備えているので、限られたスペース内で昇圧した空気を効率良く的確に次段の動翼１２１ａに送り込むことができる。 Moreover, the stationary blade 121b is further provided with a return blade 121b2 on the other surface for guiding the air led out from the diffuser 121b1 and circulated to the other surface toward the axial center, so that the pressure is increased in a limited space. The air thus efficiently and accurately can be sent to the next-stage moving blade 121a.
　特に、静翼１２１ｂのディフューザ１２１ｂ１を所定半径ｒ１以上の位置に円周方向に沿って配列して内径側に空洞部Ｓを形成し、この空洞部Ｓに、前記所定半径ｒ１よりも小さい半径ｒ２の動翼１２１ａの全部又は一部を収納するようにしており、動翼１２１ａの軸方向寸法ｄと静翼１２１ｂの軸方向寸法ｈとをとがオーバーラップするので、空気圧縮部１０２の軸方向寸法を短縮し、かつ動翼１２１ａの翼車１２１ａ１と静翼１２１ｂのディフューザ１２１ｂ１とをラジアル方向に正対させることで圧縮効率を効果的に高めることができる。 In particular, the diffuser 121b1 of the stationary blade 121b is arranged along the circumferential direction at a position greater than or equal to a predetermined radius r1 to form a cavity S on the inner diameter side, and a radius r2 smaller than the predetermined radius r1 is formed in the cavity S. The moving blade 121a is accommodated in whole or in part, and the axial dimension d of the moving blade 121a and the axial dimension h of the stationary blade 121b overlap with each other. The compression efficiency can be effectively increased by shortening the dimensions and causing the impeller 121a1 of the moving blade 121a and the diffuser 121b1 of the stationary blade 121b to face each other in the radial direction.
　とりわけ、図１７（ａ）、（ｂ）に示すように静翼１２１ｂのディフューザ１２１ｂ１の軸方向寸法ｈ１内に動翼１２１ａの開口ＯＰが納まるように構成すれば、非常にコンパクトで且つ効率の良い空気圧縮部１０２を実現することが可能となる。そして、このような動翼１２１ａと静翼１２１ｂの組を複数段設けることで、コンパクトでありながら、圧縮率を有効に高めて強い噴射力を有する送風機を構成することができる。 In particular, as shown in FIGS. 17 (a) and 17 (b), if the opening OP of the moving blade 121a fits within the axial dimension h1 of the diffuser 121b1 of the stationary blade 121b, it is very compact and efficient. The air compression unit 102 can be realized. By providing a plurality of pairs of the moving blades 121a and the stationary blades 121b, it is possible to configure a blower having a strong injection force by effectively increasing the compression rate while being compact.
　その他の構成も、本発明の趣旨を逸脱しない範囲で種々変形が可能である。 Other configurations can be variously modified without departing from the spirit of the present invention.
　例えば、静翼に少なくとも戻り羽根を設けておけば、ディフューザは必ずしも静翼に設けずとも、円筒状の筐体の内壁がディフューザ的な役割をなすように構成することも可能である。さらには、静翼それ自体も円筒状の筐体に一体に作り込んで構成することも可能である。 For example, if at least the return blade is provided on the stationary blade, the diffuser may not necessarily be provided on the stationary blade, but the inner wall of the cylindrical casing can also be configured to serve as a diffuser. Further, the stationary blade itself can be integrally formed in a cylindrical casing.
　以上に詳述した本発明によれば、電力消費以外にランニングコストがかからないため、ガスを用いたスプレー缶タイプのエアダスタに比べて遙かに安価に利用することができる。その上、特別なガスではなく周辺の空気を利用するだけであるので、有害で危険な可燃性ガスを発生させず、缶の製造や廃棄も不要となり、温室効果を伴うこともないため、環境に優しい送風機としての利用価値を有することが可能となる。 According to the present invention described in detail above, since there is no running cost other than power consumption, it can be used at a much lower cost than a spray can type air duster using gas. In addition, it uses only ambient air instead of special gases, so it does not generate harmful and dangerous flammable gases, no cans need to be manufactured or disposed of, and it does not have a greenhouse effect. It is possible to have a utility value as a fan that is gentle to the environment.

Claims (22)

  1. 　一対の開口を有し両開口の間に流路を形成した本体部と、
    　該本体部の内部に備えられたモータと、
    　該モータの軸心と一体に回転し軸心方向に空気を吸い込んで円周方向に吹き出す動翼および当該動翼から吹き出した空気を再度軸心に向かって案内する静翼を組み合わせた遠心ファンを前記モータの軸心に沿って多段に連ねてなる空気圧縮部と、
    　本体部の排気側の開口に設けた噴射ノズルとを具備してなり、
    　モータを作動させることによって吸気側の開口から周辺の空気を吸い込み、空気圧縮部で圧縮空気を生成し、排気側の開口に設けた噴射ノズルから圧縮空気を噴射し得るように構成したことを特徴とする送風機。     A main body having a pair of openings and forming a flow path between the two openings;
    A motor provided inside the main body,
    A centrifugal fan that combines a rotor blade that rotates integrally with the shaft center of the motor, sucks air in the shaft center direction, blows it out in the circumferential direction, and a stationary blade that guides the air blown out from the rotor blade toward the shaft center again. An air compression section that is connected in multiple stages along the axis of the motor;
    An injection nozzle provided in an opening on the exhaust side of the main body,
    By operating the motor, ambient air is sucked in through the opening on the intake side, compressed air is generated in the air compression section, and compressed air can be injected from the injection nozzle provided in the opening on the exhaust side. And blower.
  2. 　静翼は、動翼から円周方向に吹き出した空気を再度軸心に向かって案内する戻り羽根を少なくとも一部に備える請求項１記載の送風機。 The blower according to claim 1, wherein the stationary blade includes at least a part of a return blade that guides the air blown out in the circumferential direction from the moving blade toward the axis again.
  3. 　静翼は少なくとも一方の面に、動翼から空気に与えられる運動エネルギを圧力エネルギに変換するディフューザを備えている請求項１記載の送風機。 The blower according to claim 1, wherein the stationary blade is provided with a diffuser that converts kinetic energy given to the air from the moving blade into pressure energy on at least one surface.
  4. 　静翼は少なくとも一方の面に、動翼から空気に与えられる運動エネルギを圧力エネルギに変換するディフューザを備えている請求項２記載の送風機。 The blower according to claim 2, wherein the stationary blade is provided with a diffuser that converts kinetic energy given to the air from the moving blade into pressure energy on at least one surface.
  5. 　静翼は更に他方の面に、ディフューザから導出されて他方の面に回り込んだ空気を軸心に向かって案内する戻り羽根を備えている請求項３記載の送風機。 The blower according to claim 3, wherein the stationary blade further includes a return vane on the other surface for guiding the air led out from the diffuser and circulated to the other surface toward the axial center.
  6. 　静翼は更に他方の面に、ディフューザから導出されて他方の面に回り込んだ空気を軸心に向かって案内する戻り羽根を備えている請求項４記載の送風機。 The blower according to claim 4, wherein the stationary blade further includes a return vane on the other surface for guiding the air led out from the diffuser and circulated to the other surface toward the axial center.
  7. 　静翼のディフューザは所定半径以上の位置に円周方向に沿って配列されて内径側に空洞部を形成しており、この空洞部に、前記所定半径よりも小径な動翼の全部又は一部を軸心方向に沿って収納している請求項３記載の送風機。 The diffuser of the stationary blade is arranged along the circumferential direction at a position greater than or equal to a predetermined radius and forms a cavity on the inner diameter side, and all or part of the moving blade having a smaller diameter than the predetermined radius is formed in the cavity. The blower according to claim 3, wherein the fan is stored along the axial direction.
  8. 　静翼のディフューザは所定半径以上の位置に円周方向に沿って配列されて内径側に空洞部を形成しており、この空洞部に、前記所定半径よりも小径な動翼の全部又は一部を軸心方向に沿って収納している請求項４記載の送風機。 The diffuser of the stationary blade is arranged along the circumferential direction at a position greater than or equal to a predetermined radius and forms a cavity on the inner diameter side, and all or part of the moving blade having a smaller diameter than the predetermined radius is formed in the cavity. The blower according to claim 4, wherein the fan is stored along the axial direction.
  9. 　静翼のディフューザは所定半径以上の位置に円周方向に沿って配列されて内径側に空洞部を形成しており、この空洞部に、前記所定半径よりも小径な動翼の全部又は一部を軸心方向に沿って収納している請求項５記載の送風機。 The diffuser of the stationary blade is arranged along the circumferential direction at a position greater than or equal to a predetermined radius and forms a cavity on the inner diameter side, and all or part of the moving blade having a smaller diameter than the predetermined radius is formed in the cavity. The blower according to claim 5, wherein the fan is stored along the axial direction.
  10. 　静翼のディフューザは所定半径以上の位置に円周方向に沿って配列されて内径側に空洞部を形成しており、この空洞部に、前記所定半径よりも小径な動翼の全部又は一部を軸心方向に沿って収納している請求項６記載の送風機。 The diffuser of the stationary blade is arranged along the circumferential direction at a position greater than or equal to a predetermined radius and forms a cavity on the inner diameter side, and all or part of the moving blade having a smaller diameter than the predetermined radius is formed in the cavity. The blower according to claim 6, wherein the fan is stored along the axial direction.
  11. 　静翼のディフューザの軸方向寸法内に動翼の開口が収まる請求項７記載の送風機。 The blower according to claim 7, wherein the opening of the moving blade is accommodated within the axial dimension of the diffuser of the stationary blade.
  12. 　静翼のディフューザの軸方向寸法内に動翼の開口が収まる請求項８記載の送風機。 The blower according to claim 8, wherein the opening of the moving blade is accommodated within the axial dimension of the diffuser of the stationary blade.
  13. 　静翼のディフューザの軸方向寸法内に動翼の開口が収まる請求項９記載の送風機。 The blower according to claim 9, wherein the opening of the moving blade is accommodated within the axial dimension of the diffuser of the stationary blade.
  14. 　静翼のディフューザの軸方向寸法内に動翼の開口が収まる請求項１０記載の送風機。 The blower according to claim 10, wherein the opening of the moving blade is accommodated within the axial dimension of the diffuser of the stationary blade.
  15. 　噴射ノズルが排気側の開口に対して着脱可能なカートリッジ構造をなしている請求項１記載の送風機。 The blower according to claim 1, wherein the injection nozzle has a cartridge structure that can be attached to and detached from the opening on the exhaust side.
  16. 　吸気側の開口にもカートリッジ構造の吸込ノズルを着脱可能に取り付け得るようにしている請求項１５記載の送風機。 The blower according to claim 15, wherein a suction nozzle having a cartridge structure can be detachably attached to the opening on the intake side.
  17. 　吸気側の開口と排気側の開口とが逆の位置関係をなすように持ち替えた際に同じ指掛かりとなる位置に、それぞれ吸込時のモータの回転数を制御するスイッチ及び噴射時のモータの回転数を制御するスイッチを備えている請求項１６記載の送風機。 A switch that controls the rotation speed of the motor at the time of suction and the rotation of the motor at the time of injection at the positions where the same finger holds when the opening on the intake side and the opening on the exhaust side are reversed so as to form an opposite positional relationship. The blower according to claim 16, further comprising a switch for controlling the number.
  18. 　何れのスイッチも、吸込時および噴出時の双方に共用可能としている請求項１７記載の送風機。 18. The blower according to claim 17, wherein any switch can be shared for both suction and ejection.
  19. 　吸込み側の流路を塞ぐ位置に着脱可能にフィルタを設けている請求項１記載の送風機。 The blower according to claim 1, wherein a filter is detachably provided at a position that closes the flow path on the suction side.
  20. 　吸気側に吸い込み音を低減するサイレンサが設けてある請求項１記載の送風機。 The blower according to claim 1, wherein a silencer for reducing the suction sound is provided on the intake side.
  21. 　流路の周囲を包む位置に遮音材を設けている請求項１記載の送風機。 The blower according to claim 1, wherein a sound insulating material is provided at a position surrounding the periphery of the flow path.
  22. 　前記本体部に搭載されたモータが、空気圧縮部よりも空気流路の下流にある構造をなしている請求項１記載の送風機。 The blower according to claim 1, wherein the motor mounted on the main body has a structure in the downstream of the air flow path with respect to the air compressor.
PCT/JP2010/068914 2009-10-28 2010-10-26 Blower WO2011052560A1 (en)

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