WO2017030078A1 - 噴流発生装置および噴流発生システム - Google Patents
噴流発生装置および噴流発生システム Download PDFInfo
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- WO2017030078A1 WO2017030078A1 PCT/JP2016/073690 JP2016073690W WO2017030078A1 WO 2017030078 A1 WO2017030078 A1 WO 2017030078A1 JP 2016073690 W JP2016073690 W JP 2016073690W WO 2017030078 A1 WO2017030078 A1 WO 2017030078A1
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- electrode
- discharge
- reference electrode
- jet
- discharge electrode
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00457—Ventilation unit, e.g. combined with a radiator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D33/00—Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
- H01T19/04—Devices providing for corona discharge having pointed electrodes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/009—Influencing flow of fluids by means of vortex rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
Definitions
- the present disclosure relates to a jet generation device and a jet generation system that inject a jet.
- Patent Document 1 describes an apparatus that includes an air chamber and a launch port communicating with the air chamber, and includes an air cannon, a rod, and a cam.
- the air cannon fires an air vortex by changing the volume of the air chamber.
- the rod is provided in the air cannon, and can move freely between a forward position for reducing the air chamber and a backward position for expanding the air chamber.
- the cam is assembled with the rotation center inclined with respect to the rod, and moves the rod to the forward position and the backward position. In this device, the rod is instantaneously moved by the rotation of the cam, and the air in the air chamber is ejected from the launch port to generate an air vortex ring.
- Patent Document 1 is configured to instantaneously move a rod, which is a mechanical mechanism, at high speed, and thus generates an impact sound.
- a rod which is a mechanical mechanism
- elements other than the rotational speed of the cam cannot be controlled, it is not possible to finely change the characteristics of the jet injected from the launch port.
- This disclosure has been made in view of the above problems, and aims to make it possible to finely change the characteristics of a jet while ensuring quietness.
- a jet flow generating device includes a discharge electrode, a reference electrode disposed away from the discharge electrode, a power supply circuit that generates an output voltage that controls a potential difference between the discharge electrode and the reference electrode, A controller that switches the output voltage of the first power supply circuit between a first voltage that does not induce corona discharge between the discharge electrode and the reference electrode, and a second voltage that induces corona discharge between the discharge electrode and the reference electrode. And a case having at least a reference electrode and a jet outlet for ejecting ion wind generated by ions generated by corona discharge.
- the output voltage of the power circuit is controlled by the control unit so that the first voltage that does not induce corona discharge between the discharge electrode and the reference electrode and the second voltage that induces corona discharge between the discharge electrode and the reference electrode.
- the ion wind generated by the corona discharge from the jet outlet is jetted as a jet, so that it is possible to finely change the jet characteristics while ensuring quietness.
- the jet flow generation system includes a plurality of jet flow generation devices, and further includes a merging portion that merges the jets ejected from the respective jet outlets of the jet flow generation device, and each jet of the jet flow generation device.
- a guide path that guides the jet jetted from the outlet to the junction.
- FIG. 16 is a sectional view taken along line XVII-XVII in FIG. 15. It is sectional drawing which shows the structure of the jet flow generator which concerns on 6th Embodiment. It is sectional drawing which shows the structure of the jet flow generator which concerns on 7th Embodiment. It is sectional drawing which shows the structure of the jet generator which concerns on 8th Embodiment. It is XXI-XXI sectional drawing of FIG.
- FIG. 34 is a sectional view taken along line XXXIV-XXXIV in FIG. 33. It is a figure which shows the structure of the jet flow generator which concerns on 18th Embodiment. It is a figure which shows the other example of the operation timing of a power supply circuit.
- FIG. 1 The configuration of the jet generating apparatus according to the first embodiment is shown in FIG.
- this jet generating device is attached to a vehicle meter or the like so as to inject a jet toward the face of a vehicle occupant and to send out an air vortex ring.
- the jet generating device includes a case 10, a discharge electrode 20, a reference electrode 30, a power supply circuit 40, and a control unit 50. Note that the portion of the case 10 in FIG. 1 shows a state in which the inside of the case 10 is seen through.
- the case 10 accommodates the reference electrode 30 and the discharge electrode 20, and includes a hollow cylindrical body 11, a cylindrical injection nozzle 12 that injects ion wind generated by ions generated by corona discharge described later, and a support Part 13.
- drum 11, the injection nozzle 12, and the support part 13 are comprised by the insulating member.
- the injection nozzle 12 corresponds to a jet outlet.
- An opening 13 a that takes in air outside the case 10 into the case 10 is formed on one end side in the longitudinal direction of the body portion 11.
- a support portion 13 is formed in the opening portion 13a.
- a cylindrical injection nozzle 12 is formed on the other end side in the longitudinal direction of the body portion 11.
- the injection nozzle 12 is smaller in diameter than the body portion 11. That is, the hydraulic diameter of the air flow path in the injection nozzle 12 is smaller than the hydraulic diameter of the air flow path in the body portion 11.
- a conductive metal reference electrode 30 is provided between the discharge electrode 20 and the injection nozzle 12 in the body portion 11.
- the discharge electrode 20 is a discharge electrode having a needle-like tip 20a.
- the discharge electrode 20 is made of a conductive metal (for example, copper) member.
- the discharge electrode 20 is supported by the support portion 13 so that the tip end portion 20a is positioned on the inner surface side of the case 10.
- An insulating member (not shown) is provided between the discharge electrode 20 and the case 10 so that the discharge electrode 20 and the case 10 are insulated.
- the reference electrode 30 is a reference electrode having a hollow cylindrical shape.
- the reference electrode 30 is disposed in the case 10 so that the outer peripheral surface of the reference electrode 30 is in contact with the inner peripheral surface of the case 10.
- the power supply circuit 40 generates an output voltage that controls the potential difference between the discharge electrode 20 and the reference electrode 30.
- the power supply circuit 40 has a positive terminal and a negative terminal.
- the negative terminal of the power supply circuit 40 is connected to the discharge electrode 20 via the wiring 40a.
- the positive terminal of the power supply circuit 40 is connected to the discharge electrode 20 and the ground terminal GND via the wiring 40b.
- the power supply circuit 40 can output an output voltage of 3 kV or higher.
- the power supply circuit 40 can output a rectangular voltage.
- the control unit 50 is configured as a computer having a CPU, a RAM, a ROM, an I / O, and the like, and the CPU performs various processes according to a program stored in the ROM.
- the control unit 50 generates a corona discharge between the discharge electrode 20 and the reference electrode 30 and a first voltage that does not induce a corona discharge between the discharge electrode 20 and the reference electrode 30. Switching between the second voltage to be induced. Thereby, the ionic wind generated by the corona discharge is jetted from the jet nozzle 12 as a jet.
- the first voltage is -2 kilovolts and the second voltage is -3 kilovolts.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40.
- the potential of the discharge electrode 20 becomes ⁇ 2 kV
- the potential of the reference electrode 30 becomes 0V.
- no corona discharge occurs around the discharge electrode 20 even when the output voltage of the power supply circuit 40 becomes ⁇ 2 kV.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period.
- This fixed period is 0.2 seconds in this embodiment.
- the potential of the discharge electrode 20 becomes ⁇ 3 kV
- the potential of the reference electrode 30 becomes 0 V.
- a voltage of ⁇ 3 kV is applied between the discharge electrode 20 and the reference electrode 30
- a strong electric field is generated in the vicinity of the tip 20a of the discharge electrode 20, and as indicated by a range R1 in FIG. Corona discharge is induced around the discharge electrode 20, and corona discharge is generated between the discharge electrode 20 and the reference electrode 30.
- the air around the discharge electrode 20 is ionized by the generation of corona discharge, and air ions are generated. Specifically, the air around the discharge electrode 20 is ionized to generate positive ions and negative ions.
- the negative ions are accelerated by the electric field between the electrodes and move to the reference electrode 30 side.
- a range R4 in FIG. 3 in the process in which negative ions move to the reference electrode 30 side, the air around the discharge electrode 20 and the reference electrode 30 is involved and an ion wind is generated. 10 is ejected from the ejection nozzle 12 formed in 10. Note that some of the negative ions in the case 10 are absorbed through the ground terminal GND, and some of the negative ions in the case 10 remain in the state of ions in the case 10, and the negative ions in the case 10 The remaining part of the air is jetted out of the case 10 from the jet nozzle 12 together with the surrounding air.
- a core 70 of a cylindrical air jet is blown out from the injection nozzle 12.
- the core 70 of the air jet blown out from the injection nozzle 12 forms a vortex ring by friction with the surrounding air, as indicated by a range R6 in FIG. In this way, a vortex ring of air is generated.
- control unit 50 controls the power supply circuit 40 again so that the output voltage of the power supply circuit 40 becomes ⁇ 2 kV, a voltage of ⁇ 2 kV is applied between the discharge electrode 20 and the reference electrode 30. At this time, the electric field in the vicinity of the discharge electrode 20 becomes small, the corona discharge ends, and no ion wind is generated. By repeating the above processing, ion wind is intermittently ejected from the ejection nozzle 12 formed in the case 10.
- air outside the case 10 is introduced into the case 10 through an opening 13 a formed in the case 10. That is, the air outside the case 10 is introduced into the case 10 through the opening 13a formed on one end side in the longitudinal direction of the body portion 11, and the injection nozzle formed on the other end side in the longitudinal direction of the body portion 11 The ion wind is injected from 12.
- FIG. 4 shows a state in which air is emitted from the round hole 71a when the cardboard box 71 is struck and the cardboard box 71 is struck.
- the flow of fluid blown out from the hole is called a jet.
- the air which comes out cylindrically from a hole is called a core.
- the core rapidly decelerates due to the momentary blowing and viscous friction between the surrounding stationary flows, and weakens in a short time and in a short distance.
- This vortex is connected like a ring around the core and is called a vortex ring.
- the vortex ring formed in this way can move forward even after the core has attenuated due to its own rotation, and can move over a relatively long distance.
- the present jet generating device jets ion wind generated by corona discharge from the jet nozzle 12 as a jet. Thereby, a vortex ring of air is generated, and this vortex ring propagates in the axial direction of the cylindrical injection nozzle 12.
- the output voltage of the power supply circuit 40 by the control unit 50 causes the first voltage that does not induce corona discharge between the discharge electrode 20 and the reference electrode 30 and the corona between the discharge electrode 20 and the reference electrode 30.
- the ion wind generated by the corona discharge from the jet nozzle 12 is jetted as a jet, so that the jet characteristics can be finely maintained while ensuring quietness. Can be changed.
- the second voltage for inducing corona discharge is applied between the discharge electrode 20 and the reference electrode 30 for 0.2 seconds.
- the period during which the second voltage is applied between the discharge electrode 20 and the reference electrode 30 can be changed.
- the output voltage of the power supply circuit 40 was set to ⁇ 3 kV as the second voltage for inducing corona discharge between the discharge electrode 20 and the reference electrode 30.
- the second voltage can be changed.
- the period in which the second voltage is applied between the discharge electrode 20 and the reference electrode 30 can be changed.
- the voltage applied between the discharge electrode 20 and the reference electrode 30 is controlled so that the speed of the jet flow jetted from the jet nozzle 12 in the initial stage becomes high, and the jet speed is lowered after a predetermined period of time has passed. It is possible to control the voltage applied between the discharge electrode 20 and the reference electrode 30 and again control the voltage applied between the discharge electrode 20 and the reference electrode 30 so as to increase the jet velocity. In this way, it is possible to control the formation and propulsion of the desired vortex ring.
- the case 10 has an opening 13a that takes air outside the case 10 into the case at a position different from the injection nozzle 12, so that the air outside the case 10 is drawn from the injection nozzle 12 to the case 10. There is no need to take in the case, and air outside the case 10 can be quickly taken into the case 10 from the opening 13a and jetted from the jet nozzle 12 as a jet.
- FIG. 5 shows the configuration of a jet generating apparatus according to the second embodiment.
- the configuration of the jet flow generating device of the present embodiment is different from the configuration of the first embodiment in that a control electrode 31 and a power supply circuit 41 are further provided.
- the control electrode 31 is disposed between the reference electrode 30 and the injection nozzle 12 formed on the case 10.
- the control electrode 31 is a control electrode having a hollow cylindrical shape, and is made of a conductive metal member (for example, copper).
- the reference electrode 30 is disposed in the case 10 so that the outer peripheral surface of the reference electrode 30 is in contact with the inner peripheral surface of the case 10.
- the power supply circuit 41 generates an output voltage that controls the potential difference between the reference electrode 30 and the control electrode 31.
- the power supply circuit 41 has a positive terminal and a negative terminal.
- the negative terminal of the power circuit 41 is connected to the reference electrode 30, the positive terminal of the power circuit 40, and the ground terminal GND via the wiring 40b.
- the positive terminal of the power supply circuit 41 is connected to the control electrode 31 via the wiring 40c. Further, the positive electrode terminal and the case 10 are insulated and the negative electrode terminal and the case 10 are insulated.
- the power supply circuit 41 can output an output voltage of -3 kV or more and 3 kV or less.
- the power supply circuit 41 can output a rectangular voltage.
- control unit 50 of the present embodiment controls the output voltage of the power supply circuit 40 and the output voltage of the power supply circuit 41.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40.
- the potential of the discharge electrode 20 becomes ⁇ 2 kV
- the potential of the reference electrode 30 becomes 0V.
- no corona discharge occurs around the discharge electrode 20 even when the output voltage of the power supply circuit 40 becomes ⁇ 2 kV.
- control unit 50 controls the power supply circuit 41 so that the output voltage of the power supply circuit 41 is 0V.
- the potentials of the control electrode 31 and the reference electrode 30 are each 0V.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period, and at the same time, the power supply circuit 41 outputs a voltage of 3 kV from the power supply circuit 41.
- This fixed period is 0.2 seconds in this embodiment.
- the control unit 50 controls the power supply circuit 40 and the power supply circuit 41 so that the output voltage of the power supply circuit 40 and the output voltage of the power supply circuit 41 are switched simultaneously. As a result, the potential of the discharge electrode 20 becomes ⁇ 3 kV, the potential of the reference electrode 30 becomes 0 V, and the potential of the control electrode 31 becomes 3 kV.
- the air around the discharge electrode 20 is ionized by the generation of corona discharge, and air ions are generated. Specifically, the air around the discharge electrode 20 is ionized to generate positive ions and negative ions.
- the negative ions are accelerated by the electric field between the electrodes and move to the reference electrode 30 side. Further, as shown in a range R14 in FIG. 7, in the process in which negative ions move to the reference electrode 30 side, the air around the discharge electrode 20 and the reference electrode 30 is involved and an ion wind is generated.
- the potential of the control electrode 31 is 3 kV and the potential of the reference electrode 30 is 0 V, an electric field is generated between the reference electrode 30 and the control electrode 31. Therefore, negative ions that have passed through the reference electrode 30 are accelerated in the process of moving to the control electrode 31 side, and a larger ion wind is generated. The ion wind that has passed through the control electrode 31 is blown out as a jet from the jet nozzle 12. Note that some of the negative ions in the case 10 are absorbed through the ground terminal GND, and some of the negative ions in the case 10 remain in the state of ions in the case 10, and the negative ions in the case 10 The remaining part of the air is jetted out of the case 10 from the jet nozzle 12 together with the surrounding air.
- the jet flow generating device includes a control electrode 31 disposed between the reference electrode 30 and the injection nozzle 12 in the case 10 and a power source that outputs a voltage applied between the reference electrode 30 and the control electrode 31. Circuit 41. Then, the control unit 50 accelerates the ion wind generated by the corona discharge in the case 10 toward the injection nozzle 12 during the period in which the output voltage of the power supply circuit 40 is switched from the first voltage to the second voltage. The output voltage of the power supply circuit 41 is controlled. Thereby, negative ions generated by corona discharge are accelerated by the electric field between the reference electrode 30 and the control electrode 31, and a larger ion wind can be generated. That is, the jet flow ejected from the jet nozzle 12 can be made faster than the jet flow generating device of the first embodiment.
- the jet generator of the second embodiment switches the output voltage of the power supply circuit 41 from 0 V to 3 kV to 3 kV while the output voltage of the power supply circuit 40 is switched from ⁇ 2 kV to ⁇ 3 kV and maintained at ⁇ 3 kV.
- the power supply circuit 41 is controlled so as to be maintained.
- the jet generating device of the present embodiment switches the output voltage of the power supply circuit 40 from ⁇ 2 kV to ⁇ 3 kV and maintains it at ⁇ 3 kV, while maintaining the output voltage of the power supply circuit 41. Is controlled from -3 kV to 3 kV and maintained at 3 kV. This point is different from the first embodiment.
- the control unit 50 of the present embodiment controls the power supply circuit 40 and the power supply circuit 41 so that the output voltage of the power supply circuit 41 becomes ⁇ 3 kV during the period in which the output voltage of the power supply circuit 40 is ⁇ 2 kV.
- negative ions generated by the previous corona discharge so that the potential of the control electrode 31 is lower than that of the reference electrode 30 and existing between the reference electrode 30 and the control electrode 31 are reduced.
- Move to the reference electrode 30 side That is, ions existing between the reference electrode 30 and the control electrode 31 are accumulated on the reference electrode 30 side.
- control unit 50 switches the output voltage of the power supply circuit 40 from ⁇ 2 kV to ⁇ 3 kV and simultaneously switches the output voltage of the power supply circuit 41 from ⁇ 3 kV to 3 kV.
- the air around the discharge electrode 20 is ionized to generate positive ions and negative ions. Then, the negative ions are accelerated by the electric field between the electrodes and move to the reference electrode 30 side. In the process in which negative ions move to the reference electrode 30 side, the air around the discharge electrode 20 and the reference electrode 30 is engulfed to generate an ion wind.
- control electrode 31 is 3 kV and the potential of the reference electrode 30 is 0 V, negative ions that have passed through the reference electrode 30 are accelerated in the process of moving to the control electrode 31 side, and larger ions Wind is generated.
- the ion wind that has passed through the control electrode 31 is blown out from the injection nozzle 12.
- control unit 50 of the present embodiment before controlling the output voltage of the power supply circuit 41 so as to accelerate negative ions generated by corona discharge toward the injection nozzle 12.
- the output voltage of the power supply circuit 41 is controlled so that negative ions existing between the reference electrode 30 and the control electrode 31 are moved to the reference electrode 30 side.
- the jet generation system of the present embodiment includes jet generation devices 1a to 1c, guide paths 12a to 12c, a merging unit 14, and a timing adjusting unit 60.
- the jet generators 1a to 1c jet ion winds generated by corona discharge as jets, and have the same configuration as the jet generator of the first embodiment.
- the guide path 12 a is an air flow path that guides the jet of air jetted from the jet flow generating device 1 a to the joining portion 14.
- This guide path 12b is an air flow path that guides the jet of air jetted from the jet flow generating device 1b to the merging portion 14.
- the guide path 12c is an air flow path that guides the jet of air jetted from the jet generating device 1c to the merging portion 14.
- the lengths of the guide paths 12a to 12c are different. Specifically, the length of the guide path 12b is the longest, the length of the guide path 12a is shorter than the guide path 12b, and the length of the guide path 12c is shorter than the guide path 12a.
- the merging portion 14 has an injection nozzle 14a.
- the merging portion 14 flows in from the jet generating device 1a via the guide passage 12a, from the jet generating device 1b through the guide passage 12b, and from the jet generating device 1c through the guide passage 12c.
- the jet is merged and jetted from the jet nozzle 14a.
- the timing adjustment unit 60 is configured as a computer having a CPU, a RAM, a ROM, an I / O, and the like, and the CPU performs various processes according to a program stored in the ROM. Note that both the RAM and the ROM are non-transitional tangible recording media.
- the timing adjusting unit 60 is connected to each control unit 50 of the jet flow generating devices 1a to 1c via a communication line.
- the ion winds generated by corona discharge in each of the jet flow generating devices 1a to 1c do not reach the confluence 14 at the same time, and the strength of the jet flow Is not constant, and the generation of the vortex ring is hindered.
- the timing adjusting unit 60 adjusts the switching timing of the output voltage of the power supply circuit 40 of each of the jet generating devices 1a to 1c. More specifically, the timing adjustment unit 60 matches the lengths of the guide paths 12a to 12c so that the jets jetted from the jet nozzles of the jet flow generators 1a to 1c coincide with each other at the timing at which the jets reach the junction 14. Thus, the output voltage switching timing of each power supply circuit 40 is adjusted.
- FIG. 11 shows the output waveform of the output voltage of each power supply circuit 40 of the jet generating devices 1a to 1c in the present jet generating system.
- the timing adjustment unit 60 is configured so that the falling of the output voltage of each power supply circuit 40 of the jet flow generators 1a to 1c becomes faster as the length of the guide paths 12a to 12c is longer.
- Each power supply circuit 40 of 1c is controlled.
- the output voltage of the power supply circuit 40 of the jet flow generating device 1a is switched from ⁇ 2 kV to ⁇ 3 kV at time t0
- the output voltage of the power supply circuit 40 of the jet flow generating device 1b is changed from ⁇ 2 kV to ⁇ Switch to 3 kV.
- the output voltage of the power supply circuit 40 of the jet flow generating device 1c is switched from ⁇ 2 kV to ⁇ 3 kV.
- the ion wind generated by the corona discharge in each of the jet flow generating devices 1a to 1c reaches the merging portion 14 all at once, so that the strength of the jet flow can be strengthened, and the vortex ring can be generated. Can be performed satisfactorily.
- FIG. 15 Next, a fifth embodiment will be described with reference to FIG. 15, FIG. 16, and FIG.
- the jet generating device according to the present embodiment is different from the jet generating device of the first embodiment in the configuration of the support portion 13 and the discharge electrode 20, and the state response member 15 and the gantry 16 are added.
- Other configurations of the jet flow generator of the present embodiment are the same as those of the first embodiment.
- the jet flow generating apparatus according to the present embodiment will be described focusing on differences from the first embodiment.
- FIG. 15 is a cross-sectional view of the jet generating device cut along a plane including the central axis of the case 10.
- FIG. 16 is a perspective view showing only the support portion 13, the discharge electrode 20, the state response member 15, and the gantry 16 in the jet flow generating device.
- 17 is a cross-sectional view taken along the line XVII-XVII in FIG.
- a screw hole 13b is formed in a portion of the support portion 13 that overlaps the central axis of the case 10 and in the vicinity thereof.
- the discharge electrode 20 has a cylindrical shape portion made of a conductive metal and a cylindrical shape, and a conical shape portion made of a conductive metal and a conical shape. The bottom surface on one side of the cylindrical portion and the bottom surface of the conical portion are in contact with each other. The columnar portion and the conical portion are integrally formed.
- the external thread 20b corresponding to the above-mentioned screw hole 13b is formed in a part of outer periphery (namely, side surface) of a cylindrical shape part.
- the screw hole 13b and the male screw 20b are screwed together as shown in FIG.
- the discharge electrode 20 passes through the support portion 13 through the screw hole 13b. And the whole cone-shaped part is arrange
- the discharge electrode 20 rotates about the central axis of the discharge electrode 20, the discharge electrode 20 moves in the direction of the central axis of the case 10 by the action of the screw hole 13b and the male screw 20b. In the present embodiment, the central axis of the discharge electrode 20 coincides with the central axis of the case 10.
- the shape of the state response member 15 changes according to the humidity of the gas around the state response member 15.
- the gas around the state response member 15 is sucked into the case 10 and blown out from the injection nozzle 12 when the jet flow generator is activated.
- the gas around the state response member 15 is also the gas around the jet generating device.
- the state response member 15 includes a first member 151 and a second member 152.
- the first member 151 is a member mainly including a moisture sensitive material. As the moisture sensitive material, resin or paper may be used.
- the first member 151 has an elongated plate shape.
- the second member 152 is a member mainly including a non-humidity sensitive material.
- a metal (for example, brass, 42 alloy) member may be used.
- the second member 152 has an elongated plate shape that is substantially the same as the first member 151.
- the first member 151 and the second member 152 have different longitudinal extension amounts with respect to the same amount of change in humidity.
- the extension amount of the first member 151 in the longitudinal direction is the length of the second member 152. It becomes larger than the amount of extension in the direction.
- the contraction amount in the longitudinal direction of the first member 151 is larger than the contraction amount in the longitudinal direction of the second member 152.
- the surface of the first member 151 on the second member 152 side in the thickness direction and the surface of the second member 152 on the first member 151 side in the thickness direction are bonded to each other. ing. Therefore, the first member 151 and the second member 152 are stacked in the thickness direction of both.
- both the 1st member 151 and the 2nd member 152 are extended in the shape of a spiral along the longitudinal direction of both.
- the first member 151 is disposed on the outer peripheral side
- the second member 152 is disposed on the inner peripheral side.
- the outer ends of the spirals of the first member 151 and the second member 152 are fixed to the gantry 16. Also, as shown in FIG. 17, of the end of the second member 152 on the spiral central portion side, the surface opposite to the surface bonded to the first member 151 is the cylindrical portion of the discharge electrode 20. It is fixed to the side.
- the gantry 16 is fixed to a member (for example, a ceiling, a meter, a steering, a headrest in a vehicle interior) to which the jet flow generating device is attached.
- a member for example, a ceiling, a meter, a steering, a headrest in a vehicle interior
- the same voltage as that of the first embodiment is applied between the discharge electrode 20 and the reference electrode 30 at the same timing as that of the first embodiment.
- a strong electric field is generated in the vicinity of the tip 20a of the discharge electrode 20, and corona discharge is generated. Similar to the first embodiment, an ion wind is generated.
- the inventor has noted that the occurrence of spark discharge is affected not only by the applied voltage but also by the distance between the electrodes and the state of the gas around the discharge electrode 20 and the reference electrode 30 (for example, the atmosphere). In particular, even when the distance between the electrodes and the voltage applied between the electrodes are the same, when the humidity of the gas around the electrodes is high, the dielectric breakdown is likely to occur, and thus a spark discharge is likely to occur.
- the state response member 15 includes the first member 151 and the second member 152 that have different longitudinal extension amounts with respect to the same humidity change amount. As a result, the state response member 15 changes its shape according to the humidity of the gas around the state response member 15.
- the first member 151 absorbs moisture and swells, and the length in the longitudinal direction increases. At this time, since the second member 152 does not swell as much as the first member 151, the amount of increase in the length in the longitudinal direction is smaller than that of the first member 151.
- the outer peripheral side extends more than the inner peripheral side. Then, the state response member 15 is deformed in the direction in which the number of turns of the spiral shape increases. As a result, the discharge electrode 20 rotates with respect to the support portion 13 around the central axis of the discharge electrode 20 in the direction indicated by the arrow W in FIG.
- the discharge electrode 20 rotates, the discharge electrode 20 moves along the direction of the central axis of the case 10 toward the side away from the reference electrode 30 by the action of the screw hole 13b and the male screw 20b. As a result, the shortest distance between the tip 20a and the reference electrode 30 is increased.
- the first member 151 dehumidifies and contracts, and the length in the longitudinal direction decreases.
- the second member 152 does not contract as much as the first member 151, the amount of decrease in the length in the longitudinal direction is smaller than that of the first member 151.
- the outer peripheral side contracts more than the inner peripheral side. Then, the state response member 15 is deformed in a direction in which the number of turns of the spiral shape decreases. As a result, the discharge electrode 20 rotates about the central axis of the discharge electrode 20 with respect to the support portion 13 in the direction opposite to the direction indicated by the arrow W in FIG.
- the discharge electrode 20 rotates in this way, the discharge electrode 20 moves along the direction of the central axis of the case 10 toward the reference electrode 30 by the action of the screw hole 13b and the male screw 20b. As a result, the shortest distance between the tip 20a and the reference electrode 30 is shortened.
- the length and shape of the first member 151 and the second member 152 are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- FIG. 18 is a cross-sectional view of the jet flow generating device of the present embodiment cut along a cross section that is perpendicular to the central axis of the case 10 and includes the gantry 16, the state response member 17, the spring member 17x, and the discharge electrode 20. However, the description of the spring member 17x is simplified.
- the state response member 17 is a swelling member mainly including a moisture sensitive material similar to that of the fifth embodiment.
- One end of the state response member 17 in the longitudinal direction is fixed to the gantry 16.
- the other end in the longitudinal direction of the state response member 17 is fixed so as to be wound clockwise around the side surface of the cylindrical portion of the discharge electrode 20 in FIG.
- the spring member 17 x is an elastic member having a lower elastic modulus than the state response member 17.
- One end of the spring member 17 x in the longitudinal direction is fixed to the gantry 16.
- the other end in the longitudinal direction of the spring member 17x is fixed so as to be wound around the side surface of the cylindrical portion of the discharge electrode 20 counterclockwise in FIG.
- the spring member 17x is always in an extended state from the natural length. Therefore, the spring member 17x always exerts a force on the discharge electrode 20 in the direction of rotating the discharge electrode 20 clockwise in FIG. Therefore, the spring member 17x biases the state response member 17 through the discharge electrode 20 in a direction in which the length of the state response member 17 in the longitudinal direction increases. With this configuration, it is possible to appropriately move the discharge electrode 20 while suppressing the slack when the state response member 17 extends.
- the state response member 17 When the humidity of the gas around the state response member 17 (that is, air) rises from the first humidity to the second humidity, the state response member 17 extends in the longitudinal direction. When the humidity of the gas around the state response member 17 decreases from the second humidity to the first humidity, the state response member 17 contracts in the longitudinal direction.
- the operation of the jet flow generating apparatus having the above-described configuration will be described with a focus on differences from the fifth embodiment. Also in the jet flow generating apparatus of the present embodiment, the same voltage as that of the fifth embodiment is applied between the discharge electrode 20 and the reference electrode 30 at the same timing as that of the fifth embodiment. As a result, corona discharge occurs and ion wind is generated.
- the state response member 17 absorbs moisture and swells, and the length in the longitudinal direction increases.
- the discharge electrode 20 is rotated about the central axis of the discharge electrode 20 in the direction of the arrow W in FIG. 18 with respect to the support portion 13 by the biasing force received from the spring member 17x.
- the discharge electrode 20 rotates, the discharge electrode 20 moves along the direction of the central axis of the case 10 toward the side away from the reference electrode 30 by the action of the screw hole 13b and the male screw 20b. As a result, the shortest distance between the tip 20a and the reference electrode 30 is increased.
- the state response member 17 when the humidity of the gas around the state response member 17 is lowered, the state response member 17 is dehumidified and contracts, and the length in the longitudinal direction is reduced. As a result, the discharge electrode 20 is pulled by the state response member 17. Therefore, the discharge electrode 20 resists the urging force received from the spring member 17x, with respect to the support portion 13 in the direction opposite to the direction of the arrow W in FIG. Rotate.
- the discharge electrode 20 rotates in this way, the discharge electrode 20 moves along the direction of the central axis of the case 10 toward the reference electrode 30 by the action of the screw hole 13b and the male screw 20b. As a result, the shortest distance between the tip 20a and the reference electrode 30 is shortened.
- the length of the state response member 17 and the elastic modulus of the spring member 17x are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- the jet generating device of this embodiment is different from the jet generating device of the sixth embodiment in that the state response member 17 is replaced by a state response member 18 and the spring member 17x is replaced by a spring member 18x.
- the jet flow generator of this embodiment has the connection form of the discharge electrode 20 and the mount 16 changed with respect to the jet flow generator of 6th Embodiment.
- the jet flow generating device of the present embodiment has a screw hole 13b and a male screw 20b that are eliminated from the jet flow generating device of the sixth embodiment.
- Other configurations are the same as those of the sixth embodiment.
- the spring member 18x corresponds to an elastic member.
- FIG. 19 is a cross-sectional view of the jet flow generating device according to the present embodiment taken along a cross section including the central axis of the case 10 and including the gantry 16, the state response member 18, the spring member 18x, and the discharge electrode 20.
- the description of the spring member 18x is simplified.
- the state response member 18 is a swelling member mainly including a moisture sensitive material similar to that of the sixth embodiment.
- One end of the state response member 18 in the longitudinal direction is fixed to the gantry 16.
- the other end of the state response member 18 in the longitudinal direction is fixed to the support portion 13.
- the state response member 18 extends from one end of the longitudinal direction to the other end in parallel to the central axis of the discharge electrode 20.
- the spring member 18 x is an elastic member having a lower elastic modulus than the state response member 18.
- One end of the spring member 18 x in the longitudinal direction is fixed to the gantry 16.
- the other end of the spring member 18x in the longitudinal direction is fixed to the support portion 13.
- the spring member 18x extends in parallel to the central axis of the discharge electrode 20 from one end to the other end in the longitudinal direction.
- the spring member 18x is always in a contracted state from the natural length. Therefore, the spring member 18 x always exerts a force in a direction to move the gantry 16 away from the support portion 13 on the gantry 16. Therefore, the spring member 18x biases the state response member 18 through the gantry 16 in a direction in which the length of the state response member 18 increases in the longitudinal direction. With this configuration, it is possible to appropriately move the discharge electrode 20 while suppressing the slack when the state response member 18 extends.
- the state response member 18 When the humidity of the gas around the state response member 18 (ie, air) rises from the first humidity to the second humidity, the state response member 18 extends in the longitudinal direction. In addition, when the humidity of the gas around the state response member 18 decreases from the second humidity to the first humidity, the state response member 18 contracts in the longitudinal direction.
- the bottom surface of the cylindrical portion of the discharge electrode 20 is fixed to the gantry 16.
- the gantry 16 of the present embodiment is not fixed and is movable.
- the screw hole 13b and the male screw 20b of the sixth embodiment are eliminated, but a through hole 20c is formed in the portion of the support portion 13 that overlaps the central axis of the case 10. .
- the discharge electrode 20 passes through the support portion 13 through the through hole 20c.
- the cylindrical portion of the discharge electrode 20 is supported by the support portion 13 so as to be slidable with respect to the support portion 13 in the through hole 20c.
- the operation of the jet flow generating device having the above-described configuration will be described with a focus on differences from the sixth embodiment. Also in the jet flow generating apparatus of the present embodiment, the same voltage as that of the sixth embodiment is applied between the discharge electrode 20 and the reference electrode 30 at the same timing as that of the sixth embodiment. As a result, corona discharge occurs and ion wind is generated.
- the state response member 18 absorbs moisture and swells, and the length in the longitudinal direction increases. Then, the spring member 18x can be extended. As a result, the gantry 16 moves in a direction away from the support portion 13 by being pushed by the spring member 18x. Then, the discharge electrode 20 also moves together with the gantry 16. Therefore, the discharge electrode 20 moves along the central axis of the case 10 in a direction away from the reference electrode 30, and as a result, the shortest distance between the tip 20a and the reference electrode 30 is increased.
- the state response member 18 when the humidity of the gas around the state response member 18 is lowered, the state response member 18 is dehumidified and contracts, and the length in the longitudinal direction is reduced. As a result, the gantry 16 is pulled by the state response member 18 and moves in a direction approaching the support portion 13 against the urging force of the spring member 18x. Then, the discharge electrode 20 also moves together with the gantry 16. Therefore, the discharge electrode 20 moves along the central axis of the case 10 in a direction approaching the reference electrode 30, and as a result, the shortest distance between the tip 20a and the reference electrode 30 is shortened.
- the length of the state response member 18 and the elastic modulus of the spring member 18x are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- the jet generating device of this embodiment is different from the jet generating device of the seventh embodiment in that the state response member 18 is replaced with a state response member 19 and the spring member 18x is replaced with a spring member 19x.
- the connection form of the discharge electrode 20 and the gantry 16 and the connection mode of the support portion 13 and the gantry 16 are changed with respect to the jet flow generating device of the seventh embodiment. .
- drum 11 and the support part 13 is changed with respect to the jet generator of 7th Embodiment.
- the reference electrode 30 is replaced with the reference electrode 30a.
- Other configurations are the same as those of the seventh embodiment.
- the spring member 19x corresponds to an elastic member.
- FIG. 20 is a cross-sectional view of the jet flow generating device according to the present embodiment, taken along a cross section including the central axis of the case 10 and including the gantry 16, the state response member 19, the spring member 19 x, and the discharge electrode 20.
- the description of the spring member 19x is simplified.
- the state response member 19 is a swelling member mainly including a moisture sensitive material similar to that of the seventh embodiment.
- One end of the state response member 19 in the longitudinal direction is fixed to the gantry 16.
- the other end in the longitudinal direction of the state response member 19 is fixed to the side surface of the cylindrical portion of the discharge electrode 20.
- the state response member 19 extends perpendicularly to the central axis of the discharge electrode 20 from one end to the other end in the longitudinal direction.
- the spring member 19 x is an elastic member having a lower elastic modulus than the state response member 19.
- One end of the spring member 19 x in the longitudinal direction is fixed to the gantry 16.
- the other end of the spring member 19x in the longitudinal direction is fixed to the side surface of the cylindrical portion of the discharge electrode 20.
- the spring member 19x extends perpendicularly to the central axis of the discharge electrode 20 from one end to the other end in the longitudinal direction.
- the spring member 19x is always in a contracted state from the natural length. Therefore, the spring member 19x always applies a force to the discharge electrode 20 in a direction to move the discharge electrode 20 away from the gantry 16. Therefore, the spring member 19x biases the state response member 19 through the discharge electrode 20 in the direction in which the length of the state response member 19 increases in the longitudinal direction. With this configuration, it is possible to appropriately move the discharge electrode 20 while suppressing the slack when the state response member 19 extends. Note that the gantry 16 of the present embodiment is fixed to other parts in the vehicle, unlike the seventh embodiment.
- the state response member 19 When the humidity of the gas around the state response member 19 (that is, air) increases from the first humidity to the second humidity, the state response member 19 extends in the longitudinal direction. Further, when the humidity of the gas around the state response member 19 decreases from the second humidity to the first humidity, the state response member 19 contracts in the longitudinal direction.
- the discharge electrode 20 is fixed to the support portion 13.
- the support portion 13 is not fixed to the body portion 11 of the case 10, and can slide with respect to the case 10 in a direction orthogonal to the central axis of the case 10. Further, the support portion 13 is fitted in a groove formed in the gantry 16. With this configuration, the support portion 13 is held by the gantry 16 so as to be slidable with respect to the gantry 16.
- the reference electrode 30 a has the same shape as one of the members obtained by cutting a bottomless hollow cylindrical member into two at a cross section including the central axis of the cylindrical shape.
- the reference electrode 30 a is a plate member that is curved so as to draw a semicircle around the central axis of the case 10 along the inner peripheral surface of the body portion 11.
- the reference electrode 30a is made of a conductive metal, and is connected to the positive terminal and the ground terminal GND of the power supply circuit 40 as in the first embodiment.
- the reference electrode 30 a covers the lower half of the inner peripheral surface of the body portion 11 and the upper half of the inner peripheral surface of the body portion 11 inside the case 10. Is not covered.
- the reference electrode 30 a is disposed on a non-axis object with respect to the central axis of the discharge electrode 20.
- the operation of the jet flow generating apparatus having the above-described configuration will be described with a focus on differences from the seventh embodiment. Also in the jet flow generating apparatus of the present embodiment, the same voltage as in the seventh embodiment is applied between the discharge electrode 20 and the reference electrode 30a at the same timing as in the seventh embodiment. As a result, corona discharge occurs and ion wind is generated.
- the state response member 19 absorbs moisture and swells, and the length in the longitudinal direction increases. Then, the spring member 19x can be extended. As a result, the discharge electrode 20 and the support part 13 are moved away from the gantry 16 by being pushed by the spring member 19x. That is, the discharge electrode 20 and the support portion 13 move in a direction orthogonal to the central axis of the case 10 and upward in FIG. At this time, the support portion 13 slides without changing its posture while being supported by the gantry 16 and the body portion 11. Accordingly, the discharge electrode 20 moves away from the reference electrode 30a located in the lower part of the case 10, and as a result, the shortest distance between the tip 20a and the reference electrode 30a is increased.
- the state response member 19 when the humidity of the gas around the state response member 19 is lowered, the state response member 19 is dehumidified and contracts, and the length in the longitudinal direction is reduced.
- the discharge electrode 20 and the support portion 13 when the discharge electrode 20 and the support portion 13 are pulled by the state response member 19, the discharge electrode 20 and the support portion 13 move toward the gantry 16 against the urging force of the spring member 19x. That is, the discharge electrode 20 and the support portion 13 move in a direction orthogonal to the central axis of the case 10 and downward in FIG. At this time, the support portion 13 slides without changing its posture while being supported by the gantry 16 and the body portion 11. Therefore, the discharge electrode 20 moves in the direction approaching the reference electrode 30a located in the lower part of the case 10, and as a result, the shortest distance between the tip 20a and the reference electrode 30a is shortened.
- the length of the state response member 19 and the elastic modulus of the spring member 19x are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- the state response member 18 is replaced with a state response member 22 and the spring member 18x is replaced with a spring member 22x with respect to the jet flow generation device of the seventh embodiment.
- a shaft member 21 and an additional holding member 161 are added to the jet flow generating device of the seventh embodiment.
- the jet flow generator of this embodiment has the connection form of the discharge electrode 20 and the mount 16 changed with respect to the jet flow generator of 7th Embodiment.
- the reference electrode 30 is replaced with the reference electrode 30a.
- Other configurations are the same as those of the seventh embodiment.
- the spring member 22x corresponds to an elastic member.
- FIG. 22 is a cross-sectional view of the jet flow generating device according to the present embodiment cut along a cross section including the central axis of the case 10 and including the gantry 16, the state response member 22, the spring member 22 x, the discharge electrode 20, and the shaft member 21. It is. However, the description of the spring member 22x is simplified.
- the shaft member 21 penetrates the cylindrical portion of the discharge electrode 20 so as to be orthogonal to the central axis of the discharge electrode 20 and in a direction orthogonal to the paper surface of FIG. And both ends of the shaft member 21 are rotatably supported by a support member in the vehicle (not shown).
- the shaft member 21 is fixed to the discharge electrode 20. Further, the discharge electrode 20 is fixed to the support portion 13. Of the two bottom surfaces of the cylindrical portion of the discharge electrode 20, the bottom surface far from the tip portion 20 a is fixed to the additional holding member 161. Further, the support portion 13 is not fixed to the body portion 11. Therefore, the shaft member 21, the discharge electrode 20, the support portion 13, and the additional holding member 161 can rotate together with the shaft member 21 as an axis.
- the state response member 22 is a swelling member mainly including a moisture sensitive material similar to that of the seventh embodiment.
- the upper end in the longitudinal direction of the state response member 22 is fixed to the gantry 16.
- the lower end in the longitudinal direction of the state response member 22 is fixed to the additional holding member 161.
- the state response member 22 extends perpendicularly to the central axis of the discharge electrode 20 from one end (ie, the upper end) in the longitudinal direction to the other end (ie, the lower end).
- the spring member 22x is an elastic member having a lower elastic modulus than the state response member 22.
- the upper end of the spring member 22 x in the longitudinal direction is fixed to the gantry 16.
- the lower end of the spring member 22x in the longitudinal direction is fixed to the additional holding member 161.
- the spring member 22x extends perpendicularly to the central axis of the discharge electrode 20 from one end (ie, the upper end) in the longitudinal direction to the other end (ie, the lower end).
- the spring member 22x is always in a contracted state from the natural length. Therefore, the spring member 22x always exerts a force in a direction to move the additional holding member 161 away from the mount 16 on the additional holding member 161. Therefore, the spring member 22x biases the state response member 22 through the additional holding member 161 in a direction in which the length of the state response member 22 in the longitudinal direction increases. With this configuration, it is possible to appropriately move the discharge electrode 20 while suppressing the slack when the state response member 22 extends. Note that the gantry 16 of the present embodiment is fixed to other parts in the vehicle, unlike the seventh embodiment.
- the state response member 22 When the humidity of the gas around the state response member 22 (that is, air) increases from the first humidity to the second humidity, the state response member 22 extends in the longitudinal direction. When the humidity of the gas around the state response member 22 decreases from the second humidity to the first humidity, the state response member 22 contracts in the longitudinal direction.
- the reference electrode 30a is a member having the same material, shape and arrangement as the reference electrode 30a of the eighth embodiment. Specifically, the reference electrode 30a has the same shape as one member of a bottomless hollow cylindrical member cut into two at a cross section including the central axis of the cylindrical shape.
- the reference electrode 30a is made of a conductive metal, and is connected to the positive terminal and the ground terminal GND of the power circuit 40 as in the first embodiment.
- the reference electrode 30 a inside the case 10 covers the lower half of the inner peripheral surface of the body portion 11, and does not cover the upper half of the inner peripheral surface of the body portion 11. As described above, the reference electrode 30 a is disposed on a non-axis object with respect to the central axis of the discharge electrode 20.
- the operation of the jet flow generating apparatus having the above-described configuration will be described with a focus on differences from the seventh embodiment. Also in the jet flow generating apparatus of the present embodiment, the same voltage as in the seventh embodiment is applied between the discharge electrode 20 and the reference electrode 30a at the same timing as in the seventh embodiment. As a result, corona discharge occurs and ion wind is generated.
- the state response member 22 absorbs moisture and swells, and the length in the longitudinal direction increases. Then, the spring member 22x can be extended. As a result, the additional holding member 161 moves in a direction away from the gantry 16 by being pushed by the spring member 22x. That is, the additional holding member 161 moves substantially downward in FIG. Along with this, the additional holding member 161, the discharge electrode 20, the support portion 13, and the shaft member 21 rotate about the shaft member 21 in the direction of the arrow W (that is, counterclockwise in FIG. 22).
- the tip 20a of the discharge electrode 20 moves in a direction away from the reference electrode 30a located in the lower part of the case 10. As a result, the shortest distance between the tip 20a and the reference electrode 30a is increased.
- the state response member 22 releases moisture and contracts, and the length in the longitudinal direction decreases.
- the additional holding member 161 is pulled by the state response member 22 and moves in a direction approaching the gantry 16 against the urging force of the spring member 22x. That is, the additional holding member 161 moves generally upward in FIG. Accordingly, the additional holding member 161, the discharge electrode 20, the support portion 13, and the shaft member 21 rotate about the shaft member 21 in the direction opposite to the direction of the arrow W (that is, clockwise in FIG. 22).
- the distal end portion 20a of the discharge electrode 20 moves in a direction approaching the reference electrode 30a located in the lower part of the case 10.
- the shortest distance between the tip 20a and the reference electrode 30a is shortened.
- the discharge electrode 20 rotates around the shaft member 21 located at a position away from the distal end portion 20a by changing the shape of the state response member 22. Therefore, by adjusting the distance between the shaft member 21 and the additional holding member 161, it is possible to easily adjust the position change of the distal end portion 20a according to the humidity change. Further, by increasing the distance between the shaft member 21 and the additional holding member 161, it is possible to appropriately increase the torque generated by the urging force of the state response member 22 and the spring member 22x.
- the length of the state response member 22 and the elastic modulus of the spring member 22x are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- FIG. 23 is a cross-sectional view of the jet flow generating device of the present embodiment cut along a cross section including the state response member 15. However, in FIG. 23, illustration of the case 10 and the reference electrode 30a is omitted.
- the configuration of the state response member 15 is as described in the fifth embodiment. However, in the state response member 15 of the present embodiment, the surface on the opposite side of the surface bonded to the first member 151 among the ends of the spiral portion of the second member 152 is the shaft member 21. It is fixed to the side.
- the operation of the jet flow generating device having the above-described configuration will be described with a focus on differences from the ninth embodiment. Also in the jet generating device of the present embodiment, the same voltage as that of the ninth embodiment is applied between the discharge electrode 20 and the reference electrode 30a at the same timing as that of the fifth embodiment. As a result, corona discharge occurs and ion wind is generated.
- the first member 151 absorbs moisture and swells, and the length in the longitudinal direction increases. At this time, since the second member 152 does not swell as much as the first member 151, the amount of increase in the length in the longitudinal direction is smaller than that of the first member 151.
- the outer peripheral side extends more than the inner peripheral side. Then, the state response member 15 is deformed in the direction in which the number of turns of the spiral shape increases. As a result, the shaft member 21 rotates with respect to the case 10 around the shaft member 21 in the direction indicated by the arrow W in FIG. 23 (that is, counterclockwise in FIG. 23). And the support part 13 and the discharge electrode 20 also rotate similarly to the shaft member 21.
- the tip 20a of the discharge electrode 20 moves in a direction away from the reference electrode 30a located in the lower part of the case 10. As a result, the shortest distance between the tip 20a and the reference electrode 30a is increased.
- the first member 151 dehumidifies and contracts, and the length in the longitudinal direction decreases.
- the second member 152 does not contract as much as the first member 151, the amount of decrease in the length in the longitudinal direction is smaller than that of the first member 151.
- the outer peripheral side contracts more than the inner peripheral side. Then, the state response member 15 is deformed in a direction in which the number of turns of the spiral shape decreases.
- the shaft member 21 rotates with respect to the case 10 around the shaft member 21 in the direction opposite to the direction indicated by the arrow W in FIG. 23 (that is, clockwise in FIG. 23). And the support part 13 and the discharge electrode 20 also rotate similarly to the shaft member 21.
- the distal end portion 20a of the discharge electrode 20 moves in a direction approaching the reference electrode 30a located in the lower part of the case 10.
- the shortest distance between the tip 20a and the reference electrode 30a is shortened.
- the length and shape of the first member 151 and the second member 152 are such that no spark discharge occurs when a voltage of ⁇ 3 kV is applied at a high humidity and a voltage of ⁇ 3 kV is applied at a high humidity. Thus, it can be adjusted as appropriate so as to generate an appropriate corona discharge.
- the control unit 50 operates in two modes, a normal mode and an electrode recovery mode.
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40 as shown in FIG. At this time, no corona discharge occurs around the discharge electrode 20.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). As a result, corona discharge is generated, and ion wind is generated as in the first embodiment.
- the discharge electrode 20 side is often set to a negative voltage with respect to the reference electrode 30.
- the discharge electrode 20 side may be a negative voltage with respect to the reference electrode 30.
- silicone or fluororesin is attracted and adsorbed to an electrode to which a negative voltage is applied during corona discharge so that the electrode is in the air.
- silicone or the like is deposited on the tip of the discharge electrode 20 that generates corona discharge over time. If this deposition is left unattended, the deposition increases as the time for generating corona discharge increases, and eventually corona discharge may become impossible.
- the discharge electrode 20 can be replaced, the discharge generator 20 can be disassembled so that the discharge electrode 20 can be cleaned, and a cleaning mechanism such as a brush for removing deposits has been generated. It has been built into the device. Although these are effective, there are disadvantages in terms of convenience and cost.
- the controller 50 applies a voltage between the discharge electrode 20 and the reference electrode 30 in such a short time that the deposit can be removed by discharge impact or spark in the electrode recovery mode. Thereby, the front-end
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40.
- the potential of the discharge electrode 20 becomes ⁇ 2 kV
- the potential of the reference electrode 30 becomes 0V.
- the output voltage of the power supply circuit 40 is ⁇ 2 kV, neither corona discharge nor spark discharge occurs around the discharge electrode 20.
- the control unit 50 next turns the power supply circuit 40 so that a voltage of ⁇ 5 kV is output from the power supply circuit 40 for a certain period (in this embodiment, 0.2 seconds) as shown in FIG. Control.
- a voltage of ⁇ 5 kV is applied between the discharge electrode 20 and the reference electrode 30
- a strong electric field is generated in the vicinity of the tip 20a of the discharge electrode 20, and a spark discharge is generated. Due to this spark discharge, a part or all of the deposit attached to the discharge electrode 20 is removed. Thereby, the tip of the discharge electrode 20 is exposed again. As a result, corona discharge is possible in the normal mode.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40, as shown in FIG.
- the potential of the discharge electrode 20 becomes ⁇ 2 kV
- the potential of the reference electrode 30 becomes 0V.
- the spark discharge ends and no corona discharge occurs.
- the control unit 50 may switch between the normal mode and the electrode recovery mode based on a user switching operation on an operation unit (not shown).
- control unit 50 switches the output voltage of the power supply circuit 40 to the third voltage of ⁇ 5 kV in order to generate a spark discharge between the discharge electrode 20 and the reference electrode 30.
- the absolute value of the third voltage is larger than the absolute value of ⁇ 3 kV, which is the second voltage. Thereby, the deposits attached to the discharge electrode 20 can be removed.
- Japanese Patent Application Laid-Open No. 2007-293066 discloses a structure in which a rotating mechanism is provided on a discharge electrode and the brush is rubbed against a brush in a copying machine using corona discharge of the discharge electrode. In such a configuration, it is essential to add a brush and a rotation mechanism that are not necessary for the discharge process, resulting in an increase in the size and cost of the housing. On the other hand, in this embodiment, the foreign material deposited on the discharge electrode can be removed at a low cost without adding complicated components.
- the jet flow generating device of the present embodiment is different from the jet flow generating device of the seventh embodiment in that the state response member 18 and the spring member 18x are eliminated, and the gantry 16 is replaced with an actuator 23 and an output shaft 23x.
- Other configurations are the same as those of the seventh embodiment.
- FIG. 25 is a cross-sectional view of the jet flow generating device according to the present embodiment cut along a cross section including the central axis of the case 10 and including the actuator 23 and the output shaft 23x. However, the description of the actuator 23 is simplified.
- the actuator 23 is an electric actuator that is controlled and operated by the control unit 50.
- the actuator 23 moves the output shaft 23x in a direction parallel to the central axis of the discharge electrode 20 and the case 10 during operation.
- the actuator 23 may be a linear motor, for example.
- One end of the output shaft 23x is connected to the bottom surface of the cylindrical portion of the discharge electrode 20 that is far from the tip 20a.
- the other end of the output shaft 23 x is connected to the actuator 23.
- the controller 50 operates in two modes, a normal mode and an electrode recovery mode.
- the control unit 50 controls the actuator 23 to place the output shaft 23x and the discharge electrode 20 at predetermined normal positions.
- the discharge electrode 20 is in this normal position, the shortest distance between the tip 20a and the reference electrode 30 is the same as in the first embodiment.
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40 as shown in FIG. At this time, no corona discharge occurs around the discharge electrode 20.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). As a result, corona discharge is generated, and ion wind is generated as in the first embodiment.
- the control unit 50 controls the actuator 23 to place the output shaft 23x and the discharge electrode 20 at predetermined recovery positions.
- the discharge electrode 20 moves in the direction indicated by the arrow W along the central axis of the case 10.
- the shortest distance between the tip 20a and the reference electrode 30 when the discharge electrode 20 is at this recovery position is shorter than when the discharge electrode 20 is at the normal position.
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40 as shown in FIG. 2, as in the first embodiment. At this time, neither corona discharge nor spark discharge occurs around the discharge electrode 20.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). Thereby, a spark discharge is generated.
- spark discharge occurs instead of corona discharge is that the shortest distance between the tip 20a and the reference electrode 30 is shorter than in the normal mode.
- This spark discharge removes a part or all of the deposit adhering to the discharge electrode 20. Thereby, the tip of the discharge electrode 20 is exposed again. As a result, corona discharge is possible in the normal mode.
- control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40, as shown in FIG. This ends the spark discharge.
- the control unit 50 may switch between the normal mode and the electrode recovery mode based on a user switching operation on an operation unit (not shown).
- the control unit 50 generates a spark discharge between the discharge electrode 20 and the reference electrode 30, so that the shortest distance between the distal end portion 20a of the discharge electrode 20 and the reference electrode 30 is set to the discharge electrode 20 and the reference electrode. Compared to the case where corona discharge is generated during 30, the length is shortened. Thereby, the deposits attached to the discharge electrode 20 can be removed. In addition, spark discharge can be generated with voltage control for normal ion wind generation.
- control unit 50 intermittently repeats the method as shown in FIG. 24 at a predetermined timing to realize corona discharge intermittently (for example, at intervals of 1 second).
- control unit 50 executes the process shown in FIG. 26 in parallel with the above process.
- the control unit 50 first waits until it is determined in step S ⁇ b> 10 whether or not the device itself has performed corona discharge. And when an own apparatus performs corona discharge, it progresses to step S20.
- step S20 the length of the period in which the previous (that is, the latest) corona discharge is performed is added to the accumulated time of the corona discharge.
- the accumulated time of the corona discharge is the accumulated time when the corona discharge is performed after the spark discharge is finally performed in the recovery mode.
- the accumulated time of the corona discharge is the cumulative time when the corona discharge has been performed after the start of new use of the jet flow generator.
- the initial value of the accumulated time at the start of new use of the jet flow generating device is zero.
- step S20 the control unit 50 adds 0.2 seconds to the accumulated time of corona discharge.
- step S30 it is determined whether or not the current value of the accumulated time exceeds the reference time value. If the reference time value is not exceeded, the process returns to step S10. Therefore, until the current value of the accumulated time exceeds the reference time value, the control unit 50 increases the accumulated time by the corona discharge period each time there is a corona discharge.
- step S30 If it is determined in step S30 that the current value of the accumulated time exceeds the reference time value, the control unit 50 proceeds to step S40.
- step S40 the recovery mode is executed as in the eleventh embodiment. As a result, a spark discharge is generated between the discharge electrode 20 and the reference electrode 30, and a part or all of the deposit attached to the discharge electrode 20 is removed. Thereby, the tip of the discharge electrode 20 is exposed again.
- step S50 the above-mentioned accumulated time is reset. As a result, the accumulated time returns to zero. Following step S50, the process returns to step S10.
- control unit discharges the discharge electrode 20 when the accumulated time for generating corona discharge between the discharge electrode 20 and the reference electrode 30 exceeds the reference time value, that is, at a timing based on the accumulated time.
- a spark discharge is generated between the reference electrode 30 and the reference electrode 30.
- deposits on the discharge electrode 20 increase each time corona discharge occurs. Therefore, when the control unit 50 operates as described above, deposits on the discharge electrode 20 can be automatically removed at an appropriate timing.
- the ammeter 24 is a circuit that detects the current value of the current flowing through the wiring 40a connected to the negative terminal of the power supply circuit 40 and outputs the detected current value to the control unit 50.
- the control unit 50 executes the process of FIG. 28 instead of the process of FIG. 26 described in the thirteenth embodiment. Steps denoted by the same reference numerals in FIGS. 26 and 28 perform the same processing.
- step S10 determines in step S10 that the device has performed corona discharge
- the control unit 50 proceeds to step S20a.
- the ammeter 24 detects the current value Ix of the current flowing through the wiring 40 a and outputs the detected current value Ix to the control unit 50.
- the control unit 50 stores the current value Ix output from the ammeter 24.
- the current value Ix of the current flowing through the wiring 40a is the same as the current value of the current flowing through the discharge electrode 20 and the reference electrode 30.
- step S20a the control unit 50 reads the current value Ix detected by the ammeter 24 at the time of the immediately preceding (that is, latest) corona discharge.
- the output voltage of the power supply circuit 40 is maintained at a constant voltage of ⁇ 3 kV, as already described.
- the control unit 50 executes the electrode recovery mode at the timing when the absolute value of the current value Ix detected by the ammeter 24 during corona discharge is lower than the reference current value.
- step S30a the control unit 50 determines whether or not the absolute value of the current value Ix detected by the ammeter 24 during corona discharge is lower than the reference current value. If the absolute value of the current value Ix is not lower than the reference current value, the process returns to step S10. If the absolute value of the current value Ix is lower than the reference current value, the process proceeds to step S40 to execute the recovery mode.
- step S40 the process returns to step S10.
- a spark is generated between the discharge electrode 20 and the reference electrode 30 at a timing based on the current flowing through the discharge electrode 20. Generate a discharge. Under a constant voltage, a decrease in current flowing through the discharge electrode 20 means an increase in deposits attached to the discharge electrode 20. Therefore, when the control unit 50 operates as described above, deposits on the discharge electrode 20 can be automatically removed at an appropriate timing.
- FIG. A voltmeter 25 is added to the jet flow generating device of the present embodiment compared to the jet flow generating device of the thirteenth embodiment. Further, in the jet flow generating device of the present embodiment, the processing content of the control unit 50 is changed with respect to the jet flow generating device of the thirteenth embodiment. Further, unlike the first to fourteenth embodiments, the power supply circuit 40 in the jet flow generating device of the present embodiment functions as a constant current source during corona discharge.
- the voltmeter 25 detects the voltage value applied between the wiring 40b connected to the positive terminal of the power circuit 40 and the wiring 40a connected to the negative terminal of the power circuit 40, and detects the voltage value. This is a circuit for outputting the voltage value thus obtained to the control unit 50.
- the control unit 50 executes the process of FIG. 30 instead of the process of FIG. 26 described in the thirteenth embodiment. Steps denoted by the same reference numerals in FIG. 26 and FIG. 30 perform the same processing.
- step S10 determines in step S10 that the device has performed corona discharge
- the control unit 50 proceeds to step S20b.
- the voltmeter 25 detects a voltage value Vx applied between the wirings 40 a and 40 b and outputs the detected voltage value Vx to the control unit 50.
- the control unit 50 stores the voltage value Vx output from the voltmeter 25.
- step S20b the controller 50 reads the voltage value Vx detected by the voltmeter 25 at the time of the immediately preceding (that is, latest) corona discharge.
- the output voltage of the power supply circuit 40 is maintained at a voltage for realizing corona discharge through which a constant current flows, as already described.
- the above-mentioned voltage of ⁇ 3 kV is applied to generate corona discharge.
- the control unit 50 executes the electrode recovery mode at the timing when the absolute value of the voltage value Vx detected by the voltmeter 25 during corona discharge becomes larger than the reference voltage value.
- step S30b the controller 50 determines whether or not the absolute value of the voltage value Vx detected by the voltmeter 25 during corona discharge is higher than the reference voltage value. If the absolute value of the voltage value Vx is less than or equal to the reference voltage value, the process returns to step S10. If the absolute value of the voltage value Vx is greater than or equal to the reference voltage value, the process proceeds to step S40 to execute the recovery mode.
- step S40 the process returns to step S10.
- the discharge electrode 20 has a timing based on the voltage applied between the discharge electrode 20 and the reference electrode 30.
- a spark discharge is generated between the reference electrode 30 and the reference electrode 30.
- an increase in voltage applied between the discharge electrode 20 and the reference electrode 30 means an increase in deposits attached to the discharge electrode 20. Therefore, when the control unit 50 operates as described above, deposits on the discharge electrode 20 can be automatically removed at an appropriate timing.
- FIG. 31 In the jet flow generator of the present embodiment, the reference electrode 30 is replaced with a reference electrode 30a as compared to the jet flow generator of the eleventh embodiment. Further, the jet generating device of the present embodiment has an additional electrode 30b and a switching circuit 42 added to the jet generating device of the eleventh embodiment. Further, the jet generating device of the present embodiment differs from the jet generating device of the eleventh embodiment in the operation in the electrode recovery mode.
- the reference electrode 30a has the same shape as one member on the lower side of a bottomless hollow cylindrical member cut into two in a cross section including the central axis of the cylindrical shape.
- the reference electrode 30 a is a plate member that is curved so as to draw a semicircle around the central axis of the case 10 along the lower portion of the inner peripheral surface of the body portion 11.
- the reference electrode 30a is made of a conductive metal and is connected to the wiring 40d.
- the reference electrode 30 a is disposed on a non-axis object with respect to the central axis of the discharge electrode 20.
- the additional electrode 30b has the same shape as one member on the upper side of a bottomless hollow cylindrical member cut into two in a cross section including the central axis of the cylindrical shape.
- the additional electrode 30 b is a plate member that is curved so as to draw a semicircle around the central axis of the case 10 along the upper portion of the inner peripheral surface of the body portion 11.
- the additional electrode 30b is made of a conductive metal and is connected to the wiring 40e.
- the reference electrode 30a and the additional electrode 30b are arranged at different positions and are not electrically connected to each other.
- the switching circuit 42 is a circuit that switches the connection destination of the wiring 40b connected to the positive terminal and the ground terminal GND of the power supply circuit 40 between the wiring 40d and the wiring 40e. The operation of the switching circuit 42 is controlled by the control unit 50.
- the control unit 50 controls the switching circuit 42 so that the wiring 40b is connected to the wiring 40d. Therefore, the reference electrode 30a is grounded, and the additional electrode 30b is not grounded and enters a floating state. In this case, the reference electrode 30a that is grounded has a larger absolute value of the potential difference from the discharge electrode 20 than the additional electrode 30b that is in the floating state. Therefore, corona discharge is more likely to occur between the discharge electrode 20 and the reference electrode 30a than between the discharge electrode 20 and the additional electrode 30b.
- the controller 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40, as in the eleventh embodiment. At this time, no corona discharge occurs around the discharge electrode 20.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). Thereby, a corona discharge is generated between the discharge electrode 20 and the reference electrode 30a, and an ion wind is generated as in the eleventh embodiment.
- control unit 50 controls the switching circuit 42 as shown in FIG. 32 so that the wiring 40b and the wiring 40d are connected at a constant predetermined cycle T1, and the wiring 40b and the wiring 40b. The state to which 40e is connected is switched.
- the reference electrode 30a In a state where the wiring 40b and the wiring 40d are connected, the reference electrode 30a is grounded, and the additional electrode 30b is not grounded but is in a floating state. In this case, the reference electrode 30a that is grounded has a larger absolute value of the potential difference from the discharge electrode 20 than the additional electrode 30b that is in the floating state. Therefore, spark discharge is more likely to occur between the discharge electrode 20 and the reference electrode 30a than between the discharge electrode 20 and the additional electrode 30b.
- the additional electrode 30b is grounded, and the reference electrode 30a is not grounded and is in a floating state.
- the absolute value of the potential difference with respect to the discharge electrode 20 is larger in the additional electrode 30b in the grounded state than in the reference electrode 30a in the floating state. Therefore, spark discharge is more likely to occur between the discharge electrode 20 and the additional electrode 30b than between the discharge electrode 20 and the reference electrode 30a.
- the control unit 50 maintains the output voltage of the power supply circuit 40 at ⁇ 2 kV during the period T2, and then during the period T3 of 0.2 seconds. Maintain at -5 kV. As a result, spark discharge occurs when the output voltage of the power supply circuit 40 reaches -5 kV.
- a spark discharge occurs between the discharge electrode 20 and the reference electrode 30a in a certain period T3, and a spark discharge occurs between the discharge electrode 20 and the additional electrode 30b in the next period T3.
- a spark discharge is generated between the discharge electrode 20 and the reference electrode 30a
- a spark discharge is generated between the discharge electrode 20 and the additional electrode 30b. That is, a spark discharge between the discharge electrode 20 and the reference electrode 30a and a spark discharge between the discharge electrode 20 and the additional electrode 30b are alternately generated.
- the discharge path differs between when a spark discharge occurs between the discharge electrode 20 and the reference electrode 30a and when a spark discharge occurs between the discharge electrode 20 and the additional electrode 30b.
- deposits are removed on the discharge electrode 20 when spark discharge occurs between the discharge electrode 20 and the reference electrode 30a and when spark discharge occurs between the discharge electrode 20 and the additional electrode 30b.
- the position to be different is different.
- the control unit 50 generates a spark discharge between the discharge electrode 20 and the reference electrode 30a in a certain period, and sparks between the discharge electrode 20 and the additional electrode 30b in a period different from the certain period. Generate a discharge.
- the control unit 50 alternately switches the electrode to be grounded between the reference electrode 30a and the additional electrode 30b. Thereby, the deviation of the deposit removal position on the discharge electrode 20 can be reduced.
- the jet generator of this embodiment is different from the jet generator of the twelfth embodiment in that the actuator 23 is replaced with the actuator 26, the output shaft 23x is replaced with the output shaft 26x, and the reference electrode 30 is replaced with the reference electrode 30a. It has been. Moreover, the control content of the control part 50 differs from 12th Embodiment. Other configurations are the same as those in the twelfth embodiment.
- FIG. 33 is a cross-sectional view of the jet flow generating device of the present embodiment, taken along a cross section that includes the central axis of the case 10 and includes the actuator 26 and the output shaft 26x. However, the description of the actuator 26 is simplified.
- the actuator 26 is an electric actuator that is controlled and operated by the control unit 50. During operation, the actuator 26 rotates the output shaft 26x in the direction indicated by the arrow W around the central axis of the discharge electrode 20 and the case 10.
- the actuator 26 may be an electric motor, for example.
- One end of the output shaft 26x is connected to the bottom surface of the cylindrical portion of the discharge electrode 20 that is far from the tip 20a.
- the other end of the output shaft 26x is connected to the actuator 26. Therefore, when the output shaft 26x rotates about the central axis of the discharge electrode 20 and the case 10 in the direction indicated by the arrow W, the discharge electrode 20 also rotates in the same manner as the output shaft 26x. At this time, the discharge electrode 20 slides with respect to the support portion 13.
- the reference electrode 30a has the same shape as a lower member of a bottomless hollow cylindrical member cut into two in a cross section including the central axis of the cylindrical shape. It is.
- the reference electrode 30 a is a plate member that is curved so as to draw a semicircle around the central axis of the case 10 along the inner peripheral surface of the body portion 11.
- the reference electrode 30a is made of a conductive metal, and is connected to the positive terminal and the ground terminal GND of the power supply circuit 40.
- the reference electrode 30 a covers the lower half of the inner peripheral surface of the body portion 11 and the upper half of the inner peripheral surface of the body portion 11 inside the case 10. Is not covered.
- the reference electrode 30 a is disposed on a non-axis object with respect to the central axis of the discharge electrode 20.
- the controller 50 operates in two modes, a normal mode and an electrode recovery mode.
- the control unit 50 does not operate the actuator 26 and, like the eleventh embodiment, first, as shown in FIG. 24, the power supply circuit outputs a voltage of ⁇ 2 kV from the power supply circuit 40. 40 is controlled. At this time, no corona discharge occurs around the discharge electrode 20.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). Thereby, a corona discharge is generated, and an ion wind is generated as in the eleventh embodiment.
- control unit 50 controls the actuator 26 to rotate the output shaft 26x and the discharge electrode 20 in the direction indicated by the arrow W around the central axis of the discharge electrode 20 and the case 10.
- the controller 50 intermittently generates spark discharge between the discharge electrode 20 and the reference electrode 30a while rotating the discharge electrode 20 as described above in the electrode recovery mode. Specifically, the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40, and then controls the power supply circuit 40 so that a voltage of ⁇ 5 kV is output from the power supply circuit 40. This process is repeated a plurality of times.
- the relative position of the reference electrode 30a with respect to the discharge electrode 20 at the time of a specific spark discharge and the relative position of the reference electrode 30a with respect to the discharge electrode 20 at the time of the next spark discharge change.
- the shift of the rotation angle about the central axis of the discharge electrode 20 between the attitude of the discharge electrode 20 at the specific spark discharge and the attitude of the discharge electrode 20 at the next spark discharge Is an angle other than a multiple of 360 ° (eg, 30 °).
- the location closest to the reference electrode 30a where the spark discharge occurs is the time of the specific spark discharge and the next spark. It differs depending on the discharge. Therefore, the position at which the deposit is removed on the discharge electrode 20 differs between the specific spark discharge and the next spark discharge.
- control unit 50 generates a spark discharge between the discharge electrode 20 and the reference electrode 30a while changing the relative position of the reference electrode 30a with respect to the discharge electrode 20. Thereby, the deviation of the deposit removal position on the discharge electrode 20 can be reduced.
- the jet generator of this embodiment has a supply device 27 added to the jet generator of the eleventh embodiment. Moreover, the jet flow generator of this embodiment differs in the control content of the control part 50 with respect to the jet generator of 11th Embodiment.
- the supply device 27 is a device that blows out water vapor and fog water 28 between the discharge electrode 20 and the reference electrode 30 in the case 10.
- the supply device 27 is controlled by the control unit 50.
- Water vapor and fog water 28 have a lower electrical resistivity than the air between the discharge electrode 20 and the reference electrode 30. Therefore, the supply device 27 supplies the water vapor and the water 28 in the fog state between the discharge electrode 20 and the reference electrode 30, so that the electrical resistance of the space between the discharge electrode 20 and the reference electrode 30 is reduced.
- the controller 50 operates in two modes, a normal mode and an electrode recovery mode.
- the control unit 50 does not operate the supply device 27. Therefore, in the normal mode, water vapor and fog water are not supplied to the space between the discharge electrode 20 and the reference electrode 30.
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40 as shown in FIG. At this time, no corona discharge occurs around the discharge electrode 20. Next, the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). Thereby, a corona discharge is generated, and an ion wind is generated as in the eleventh embodiment.
- control unit 50 operates the supply device 27 in the electrode recovery mode. Therefore, in the electrode recovery mode, water vapor and water 28 in a fog state are supplied to the space between the discharge electrode 20 and the reference electrode 30. Thereby, the electrical resistance of the space between the discharge electrode 20 and the reference electrode 30 is reduced.
- the control unit 50 first controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40, as in the normal mode. At this time, neither corona discharge nor spark discharge occurs around the discharge electrode 20. Next, the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period (that is, 0.2 seconds). As a result, a spark discharge is generated between the discharge electrode 20 and the reference electrode 30 that sandwich the space where the electrical resistance is reduced. Due to this spark discharge, a part or all of the deposit attached to the discharge electrode 20 is removed. Thereby, the tip of the discharge electrode 20 is exposed again. As a result, corona discharge is possible in the normal mode.
- control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40. This ends the spark discharge.
- the control unit 50 may switch between the normal mode and the electrode recovery mode based on a user switching operation on an operation unit (not shown).
- the supply device 27 since the supply device 27 generates a spark discharge between the discharge electrode 20 and the reference electrode 30, the electric resistance between the discharge electrode 20 and the reference electrode 30 is set between the discharge electrode 20 and the reference electrode 30. Supply the substances to be reduced (ie water vapor and mist). By doing in this way, a spark discharge can be produced with voltage control for normal ion wind generation.
- the jet flow generating device may include a plurality of discharge electrodes 20 having needle-like tip portions 20 a and a plurality of reference electrodes 30 arranged in parallel to each other. Good. Specifically, a plurality of discharge electrodes 20 may be arranged in an array, and the reference electrodes 30 for the respective discharge electrodes 20 may be arranged in parallel lines. As described above, the jet flow generating device includes the plurality of discharge electrodes 20 and the plurality of reference electrodes 30, thereby increasing the air volume of the ion wind and further increasing the strength of the jet flow.
- the configuration shown in FIG. 13 is different from the configuration shown in FIG. 12 in that the reference electrode 30 is rotated 90 degrees with respect to the axial direction of the case 10.
- the jet flow generator may include a plurality of discharge electrodes 20 having needle-like tip portions 20 a and a mesh-like reference electrode 30.
- a plurality of discharge electrodes 20 may be arranged in an array, and the reference electrodes 30 for the respective discharge electrodes 20 may be arranged in parallel lines.
- the jet flow generating device includes the plurality of discharge electrodes 20 and the mesh-like reference electrode 30, thereby increasing the amount of ion wind and further increasing the strength of the jet flow.
- an aroma unit for storing a plate that emits a scent component such as aroma oil is provided in the opening 13a of the case 10 or the inside of the case 10 or the like. Also good. Thus, it is possible to release a scent component from the injection nozzle 12 by storing the plate which releases a scent component in an aroma unit.
- the jet flow generating device may be configured to inject cold air or warm air toward the face of the vehicle occupant for air conditioning.
- cold air or warm air generated by the air conditioner can be taken into the case 10 from the opening 13 a formed in the case 10.
- the jet flow generating device may be configured to inject air with high humidity toward the face of the vehicle occupant.
- high humidity air generated by the humidifier can be taken into the case 10 from the opening 13 a formed in the case 10.
- the present jet generating device is attached to a vehicle meter or the like so as to inject the jet toward the face of the vehicle occupant has been shown.
- the present jet generating device may be individually provided for the occupant of each seat of the vehicle so as to generate a jet for each occupant of the vehicle.
- timing adjustment unit 60 and the control units 50 of the jet flow generating devices 1a to 1c are configured separately.
- the timing adjustment unit 60 and the control units 50 of the jet flow generating devices 1a to 1c may be configured by one computer.
- the switching timing of the output voltage of the power supply circuit 40 and the switching timing of the output voltage of the power supply circuit 41 are synchronized. However, it is not always necessary to synchronize. For example, the switching timing of the output voltage of the power supply circuit 41 may be slightly delayed from the switching timing of the output voltage of the power supply circuit 40.
- the control unit 50 controls the power supply circuits 40 and 41 at the timing shown in FIG. More specifically, the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40. As a result, the potential of the discharge electrode 20 becomes ⁇ 2 kV, and the potential of the reference electrode 30 becomes 0V. Thus, no corona discharge occurs around the discharge electrode 20 even when the output voltage of the power supply circuit 40 becomes ⁇ 2 kV. At the same time, the control unit 50 controls the power supply circuit 41 so that the output voltage of the power supply circuit 41 is 0V. As a result, the potentials of the control electrode 31 and the reference electrode 30 are each 0V.
- control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 3 kV is output from the power supply circuit 40 for a certain period, and also controls the power supply circuit 41 so that the output voltage of the power supply circuit 41 is 0 V for the same certain period.
- This fixed period is, for example, 0.2 seconds. Thereby, the potentials of the control electrode 31 and the reference electrode 30 are each maintained at 0V. Therefore, in this fixed period, ion wind is generated by the same action as in the first embodiment without the control electrode 31.
- the control unit 50 controls the power supply circuit 40 so that a voltage of ⁇ 2 kV is output from the power supply circuit 40.
- the control unit 50 controls the power supply circuit 41 so that the output voltage of the power supply circuit 41 is maintained at 0V.
- the potential of the discharge electrode 20 is switched to -2 kV, and the potentials of the control electrode 31 and the reference electrode 30 are each maintained at 0V.
- the electric field in the vicinity of the discharge electrode 20 becomes small, and the corona discharge between the discharge electrode 20 and the reference electrode ends.
- ion wind remains between the discharge electrode 20 and the reference electrode 30 and between the reference electrode 30 and the control electrode 31 due to the effect of the corona discharge before termination.
- the control unit 50 controls the power supply circuit 40 so that the voltage of ⁇ 2 kV is continuously output from the power supply circuit 40 for a certain period, and at the same time, the power supply circuit 41 outputs a voltage of 3 kV.
- the circuit 41 is controlled.
- This fixed period is, for example, 0.2 seconds.
- the potential of the discharge electrode 20 becomes ⁇ 2 kV
- the potential of the reference electrode 30 becomes 0 V
- the potential of the control electrode 31 becomes 3 kV.
- an electric field is generated between the reference electrode 30 and the control electrode 31. Therefore, in this fixed period, the negative ions generated before the corona discharge ends and moving between the reference electrode 30 and the control electrode 31 are accelerated in the process of moving to the control electrode 31 side, and more A large ion wind is generated.
- control unit 50 switches the output voltage of the power supply circuit 40 of the power supply circuit 40 from the second voltage (for example, 3 kV) to the first voltage (for example, 2 kV), and then the ions generated by the corona discharge are supplied to the injection nozzle 12.
- the output voltage of the power supply circuit 41 is controlled so as to accelerate toward the target.
- the jet flow generating device includes the one-stage control electrode 31, but may include two or more control electrodes 31.
- the jet flow generating device has the injection nozzle 12 as a jet outlet, but may have a simple opening (that is, an orifice) instead of the injection nozzle 12.
- the case 10 houses the discharge electrode 20 and the reference electrode 30. However, the case 10 only needs to accommodate at least the reference electrode 30. Further, in the second and third embodiments, the case 10 accommodates the discharge electrode 20, the reference electrode 30, and the control electrode 31, but the case 10 only needs to accommodate at least the control electrode 31.
- the jet flow generator changes the position of the discharge electrode 20 without changing the position of the reference electrode 30, thereby reducing the shortest distance between the tip 20a and the reference electrode 30. It is changing.
- the jet flow generating device may change the shortest distance between the tip portion 20 a and the reference electrode 30 by changing the position of the reference electrode 30 without changing the position of the discharge electrode 20.
- the state response members 15, 17, 18, 19, and 22 are moisture-sensitive stretchable members that include a moisture-sensitive material that deforms in response to changes in the humidity of the surrounding gas.
- the state response members 15, 17, 18, 19, and 22 are not limited to this.
- the state response members 15, 17, 18, 19, and 22 may be a material (for example, bimetal) that deforms in response to a temperature change of the surrounding gas. Even if the distance between the electrodes and the voltage applied between the electrodes are the same, if the temperature of the gas around the electrodes is high, the dielectric breakdown is likely to occur, and thus a spark discharge is likely to occur. Therefore, in this case, the state response members 15, 17, 18, 19, and 22 are deformed according to the rise in the temperature of the gas around the jet flow generating device, thereby increasing the shortest distance between the tip 20 a and the reference electrode 30. To do. Further, the state response members 15, 17, 18, 19, and 22 are deformed in accordance with a decrease in the temperature of the gas around the jet flow generating device, thereby shortening the shortest distance between the tip 20a and the reference electrode 30.
- a material for example, bimetal
- the state response members 15, 17, 18, 19, and 22 may be a material that deforms in response to a change in pressure of the surrounding gas.
- the state response members 15, 17, 18, 19, and 22 may be a material that deforms according to the composition of the surrounding gas (for example, oxygen concentration).
- the techniques of the fifth to tenth embodiments may be applied to the jet generators of the eleventh to eighteenth embodiments.
- techniques for suppressing the occurrence of spark discharge are disclosed.
- a technique for positively causing spark discharge for the purpose of removing deposits is disclosed.
- the jet generator of the eleventh embodiment generates a spark discharge by increasing the voltage applied between the discharge electrode 20 and the reference electrode 30. Further, the jet flow generating device of the twelfth embodiment generates a spark discharge by reducing the shortest distance between the tip 20a of the discharge electrode 20 and the reference electrode 30. Moreover, the jet flow generator of the eighteenth embodiment generates a spark discharge by supplying a substance that reduces electrical resistance between the discharge electrode 20 and the reference electrode 30.
- the thirteenth, fourteenth and fifteenth embodiments show various techniques for determining the timing for performing corona discharge. These various techniques may be applied to the jet flow generators of the twelfth, sixteenth and seventeenth embodiments.
- each of the circular tube-shaped discharge electrode 20, the reference electrode 30, and the control electrode 31 may be changed to a plate-shaped electrode.
- the jet flow generating device may rotate the reference electrode 30a around the central axis of the case 10 instead of rotating the discharge electrode 20 during spark discharge. Even in this way, the relative position of the discharge electrode 20 with respect to the reference electrode 30a can be changed during the spark discharge. Therefore, it is possible to reduce the deviation of the deposit removal position on the discharge electrode 20.
- the jet flow generating device may move the discharge electrode 20 along the central axis of the discharge electrode 20 instead of rotating the discharge electrode 20 during spark discharge.
- the jet flow generating device may move the discharge electrode 20 along the direction intersecting the central axis of the discharge electrode 20 during spark discharge. Even in this way, the relative position of the discharge electrode 20 with respect to the reference electrode 30a can be changed during the spark discharge. Therefore, it is possible to reduce the deviation of the deposit removal position on the discharge electrode 20.
- water vapor and mist are exemplified as substances that reduce the electrical resistance between the discharge electrode 20 and the reference electrode 30.
- the substance that reduces the electrical resistance between the discharge electrode 20 and the reference electrode 30 may be another substance (for example, gas).
- the humidity of the air described above is relative humidity. Moreover, the humidity of the above-mentioned gas is an amount that increases as the amount of water vapor contained in the gas increases.
- the power supply circuit 40 corresponds to the first power supply circuit
- the power supply circuit 41 corresponds to the second power supply circuit
Abstract
Description
第1実施形態に係る噴流発生装置の構成を図1に示す。本噴流発生装置は、快適性向上のため、車両の乗員の顔に向けて噴流を噴射し、空気渦輪を送出するよう車両のメータ等に取り付けられる。
第2実施形態に係る噴流発生装置の構成を図5に示す。本実施形態の噴流発生装置の構成は、上記第1実施形態の構成と比較して、更に、制御電極31および電源回路41を備えた点が異なる。
次に、第3実施形態に係る噴流発生装置について説明する。本実施形態の噴流発生装置の構成は、上記第2実施形態の構成と同じである。
次に、第4実施形態に係る噴流発生システムの構成を図10に示す。本実施形態の噴流発生システムは、噴流発生装置1a~1c、誘導路12a~12c、合流部14およびタイミング調整部60を備えている。
次に第5実施形態について、図15、図16、図17を用いて説明する。本実施形態に係る噴流発生装置は、第1実施形態の噴流発生装置に対して、支持部13、放電電極20の構成が変更され、かつ、状態応答部材15、架台16が追加されている。本実施形態の噴流発生装置の他の構成は、第1実施形態と同じである。以下、本実施形態の噴流発生装置について、第1実施形態と異なる部分を中心に説明する。
次に第6実施形態について、図18を用いて説明する。本実施形態の噴流発生装置は、第5実施形態の噴流発生装置に対して、状態応答部材15が状態応答部材17に置き換えられ、かつ、ばね部材17xが追加されている。その他の構成は、第5実施形態と同じである。ばね部材17xは弾性部材に対応する。
次に第7実施形態について、図19を用いて説明する。本実施形態の噴流発生装置は、第6実施形態の噴流発生装置に対して、状態応答部材17が状態応答部材18に置き換えられ、かつ、ばね部材17xがばね部材18xに置き換えられている。また、本実施形態の噴流発生装置は、第6実施形態の噴流発生装置に対して、放電電極20と架台16の接続形態が変更になっている。また、本実施形態の噴流発生装置は、第6実施形態の噴流発生装置に対して、ネジ穴13bと雄ネジ20bが廃されている。その他の構成は、第6実施形態と同じである。ばね部材18xは弾性部材に対応する。
次に第8実施形態について、図20、図21を用いて説明する。本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、状態応答部材18が状態応答部材19に置き換えられ、かつ、ばね部材18xがばね部材19xに置き換えられている。また、本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、放電電極20と架台16の接続形態、および、支持部13と架台16の接続形態が変更になっている。また、本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、胴体部11と支持部13の接続形態が変更になっている。また、本実施形態の噴流発生装置においては、基準電極30が基準電極30aに置き換わっている。その他の構成は、第7実施形態と同じである。ばね部材19xは弾性部材に対応する。
次に第9実施形態について、図22を用いて説明する。本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、状態応答部材18が状態応答部材22に置き換えられ、かつ、ばね部材18xがばね部材22xに置き換えられている。また、本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、軸部材21および追加保持部材161が追加されている。また、本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、放電電極20と架台16の接続形態が変更になっている。また、本実施形態の噴流発生装置においては、基準電極30が基準電極30aに置き換わっている。その他の構成は、第7実施形態と同じである。ばね部材22xは弾性部材に対応する。
次に第10実施形態について、図23を用いて説明する。本実施形態の噴流発生装置は、第9実施形態の噴流発生装置に対して、状態応答部材22、部材18x、および追加保持部材161を、第5実施形態で説明した状態応答部材15に置き換えたものである。その他の構成は、第9実施形態と同じである。図23は、本実施形態の噴流発生装置を、状態応答部材15を含む断面で切った断面図である。ただし、図23では、ケース10および基準電極30aの図示を省略している。
次に第11実施形態について、図24を用いて説明する。本実施形態の噴流発生装置は、第1実施形態の噴流発生装置に対して、制御部50の制御内容が変更されている。その他の構成は、第1実施形態と同じである。
次に第12実施形態について、図25を用いて説明する。本実施形態の噴流発生装置は、第7実施形態の噴流発生装置に対して、状態応答部材18、ばね部材18xが廃され、架台16がアクチュエータ23および出力軸23xに置き換えられている。その他の構成は、第7実施形態と同じである。
次に第13実施形態について、図26を用いて説明する。本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、制御部50の処理内容が変更になっている。その他の構成は、第11実施形態と同じである。
次に第14実施形態について、図27、図28を用いて説明する。本実施形態の噴流発生装置は、第13実施形態の噴流発生装置に対して、電流計24が追加されている。また、本実施形態の噴流発生装置は、第13実施形態の噴流発生装置に対して、制御部50の処理内容が変更になっている。その他の構成は、第13実施形態と同じである。
次に第15実施形態について、図29、図30を用いて説明する。本実施形態の噴流発生装置は、第13実施形態の噴流発生装置に対して、電圧計25が追加されている。また、本実施形態の噴流発生装置は、第13実施形態の噴流発生装置に対して、制御部50の処理内容が変更になっている。また、本実施形態の噴流発生装置における電源回路40は、第1~第14実施形態とは異なり、コロナ放電時に定電流源として機能する。
次に第16実施形態について、図31、図32を用いて説明する。本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、基準電極30が基準電極30aに置き換えられている。また、本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、追加電極30bおよび切替回路42が追加されている。また、本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、電極回復モード時の作動が異なっている。
次に第17実施形態について、図33、図34を用いて説明する。本実施形態の噴流発生装置は、第12実施形態の噴流発生装置に対して、アクチュエータ23がアクチュエータ26に置き換えられ、出力軸23xが出力軸26xに置き換えられ、基準電極30が基準電極30aに置き換えられている。また、制御部50の制御内容が、第12実施形態と異なる。その他の構成は、第12実施形態と同じである。
次に第18実施形態について、図35を用いて説明する。本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、供給装置27が追加されている。また、本実施形態の噴流発生装置は、第11実施形態の噴流発生装置に対して、制御部50の制御内容が異なっている。
(1)上記各実施形態では、基準電極30よりも低い電圧が放電電極20に印加されて放電電極20と基準電極30の間にコロナ放電が発生する。しかし、基準電極30よりも高い電圧が放電電極20に印加されて放電電極20と基準電極30の間にコロナ放電が発生してもよい。
Claims (18)
- 放電電極(20)と、
前記放電電極と離れて配置された基準電極(30、30a)と、
前記放電電極と前記基準電極の電位差を制御する出力電圧を発生させる電源回路(40)と、
前記電源回路の出力電圧を、前記放電電極と前記基準電極の間にコロナ放電を誘起させない第1電圧と、前記放電電極と前記基準電極の間にコロナ放電を誘起させる第2電圧との間で切り替える制御部(50)と、
少なくとも前記基準電極を収容するとともに前記コロナ放電により発生したイオンによるイオン風を噴射させる噴出口(12)を有するケース(10)と、を備えた噴流発生装置。 - 前記電源回路を第1電源回路とし、
当該噴流発生装置はさらに、前記ケース内において前記基準電極と前記噴出口の間に配置された制御電極(31)と、前記基準電極と前記制御電極の間に印加する電圧を出力する第2電源回路(41)と、を備え、
前記制御部は、前記第1電源回路の出力電圧を前記第1電圧から前記第2電圧に切り替えて前記第2電圧を維持している期間中、または、前記第1電源回路の出力電圧を前記第2電圧から前記第1電圧に切り替えた後に、前記コロナ放電により発生したイオンを前記噴出口へ向けて加速させるよう前記第2電源回路の出力電圧を制御する請求項1に記載の噴流発生装置。 - 前記制御部は、前記コロナ放電により発生したイオンを前記噴出口へ向けて加速させるよう前記第2電源回路の出力電圧を制御する前に、前記基準電極と前記制御電極の間に存在するイオンを前記基準電極側に移動させるよう前記第2電源回路の出力電圧を制御する請求項2に記載の噴流発生装置。
- 前記ケースは、前記噴出口とは異なる位置に、当該ケースの外部の空気を当該ケース内に取り込む開口部(13a)を有している請求項1または2に記載の噴流発生装置。
- 請求項1ないし4のいずれか1つに記載の噴流発生装置を複数備え、
さらに、噴流発生装置の各々の前記噴出口から噴射される前記噴流を合流させる合流部(14)と、
前記噴流発生装置の各々の前記噴出口から噴射する前記噴流を前記合流部へと導く複数の誘導路(12a~12c)と、を備えた噴流発生システム。 - 前記噴流発生装置の各々の前記噴出口から噴射する前記噴流が前記合流部に到達するタイミングを一致させるよう前記複数の誘導路の長さに応じて前記複数の噴流発生装置の前記第1電源回路の出力電圧の切り替えタイミングを調整するタイミング調整部(60)を備えた請求項5に記載の噴流発生システム。
- 当該噴流発生システムの周囲にある気体の状態変化に応じて形状が変化する状態応答部材(15、16、17、18、19、22)を備え、
前記状態応答部材は、形状が変化することで前記放電電極と前記基準電極の間の距離を変化させる請求項1ないし4のいずれか1つに記載の噴流発生装置。 - 前記状態応答部材は、当該噴流発生システムの周囲にある気体の湿度が高くなると、前記放電電極と前記基準電極の間の距離を大きくすることを特徴とする請求項7に記載の噴流発生装置。
- 弾性部材(17x、18x、19x、22x)を備え、
前記状態応答部材は、前記気体の状態変化に応じて長手方向の長さが変化し、
前記弾性部材は、前記状態応答部材の長手方向の長さが増大する向きに前記状態応答部材を付勢する請求項7または8に記載の噴流発生装置。 - 前記放電電極は、前記状態応答部材の形状が変化することで、前記放電電極の先端部(20a)から離れた位置にある軸を中心として回転する請求項7ないし9のいずれか1つに記載の噴流発生装置。
- 前記制御部は、前記放電電極と前記基準電極の間に火花放電を発生させるため、前記電源回路の出力電圧を第3電圧に切り替え、
前記第3電圧の絶対値は、前記第2電圧の絶対値よりも大きい請求項1ないし4および7ないし10のいずれか1つに記載の噴流発生装置。 - 前記制御部は、前記放電電極と前記基準電極の間に火花放電を発生させるため、前記放電電極と前記基準電極の間の距離を、前記放電電極と前記基準電極の間にコロナ放電を発生させる場合に比べて、短くすることを特徴とする請求項1ないし4および7ないし11のいずれか1つに記載の噴流発生装置。
- 前記制御部は、前記放電電極と前記基準電極の間にコロナ放電を発生させた累積時間に基づいたタイミングで、前記放電電極と前記基準電極の間に火花放電を発生させる請求項1ないし4および7ないし12のいずれか1つに記載の噴流発生装置。
- 前記制御部は、前記放電電極と前記基準電極の間にコロナ放電を発生させる際に前記放電電極を流れる電流に基づいたタイミングで、前記放電電極と前記基準電極の間に火花放電を発生させる請求項1ないし4および7ないし13のいずれか1つに記載の噴流発生装置。
- 前記制御部は、前記放電電極と前記基準電極の間にコロナ放電を発生させる際に前記放電電極と前記基準電極の間に印加される電圧に基づいたタイミングで、前記放電電極と前記基準電極の間に火花放電を発生させる請求項1ないし4および7ないし14のいずれか1つに記載の噴流発生装置。
- 前記基準電極とは異なる位置に配置されると共に前記基準電極と導通していない追加電極(30b)を備え、
前記制御部は、ある期間において、前記放電電極と前記基準電極の間に火花放電を発生させ、前記ある期間とは別の期間において、前記放電電極と前記追加電極の間に火花放電を発生させる請求項1ないし4および7ないし15のいずれか1つに記載の噴流発生装置。 - 前記制御部は、前記放電電極に対する前記基準電極の相対位置を変えながら、前記放電電極と前記基準電極の間に火花放電を発生させる請求項1ないし4および7ないし16のいずれか1つに記載の噴流発生装置。
- 前記放電電極と前記基準電極の間に火花放電を発生させるため、前記放電電極と前記基準電極の間に、前記放電電極と前記基準電極の間の電気抵抗を低減する物質を供給する供給装置(27)を備えた請求項1ないし4および7ないし17のいずれか1つに記載の噴流発生装置。
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JP2019079685A (ja) * | 2017-10-24 | 2019-05-23 | 株式会社Soken | 噴流発生装置 |
JP2019139965A (ja) * | 2018-02-09 | 2019-08-22 | 株式会社Soken | 気流搬送装置 |
JP2019145307A (ja) * | 2018-02-20 | 2019-08-29 | 株式会社Soken | 渦輪送出装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112016003757T5 (de) | 2018-05-17 |
US10211036B2 (en) | 2019-02-19 |
CN107923414A (zh) | 2018-04-17 |
JP6531828B2 (ja) | 2019-06-19 |
DE112016003757B4 (de) | 2022-03-03 |
CN107923414B (zh) | 2019-05-03 |
US20180204710A1 (en) | 2018-07-19 |
JPWO2017030078A1 (ja) | 2018-02-08 |
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