JP2007242254A - Ion generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ion generating device capable of inspecting output waveform of a secondary coil even in a state a boosting coil or a secondary side circuit is potted. <P>SOLUTION: An inspection terminal 54 which is exposed outside is installed in the casing 5 beforehand, and an output terminal of a secondary coil is connected to this inspection terminal 54. Thereby, even in such a state that the secondary coil is in potting, the output waveform of the secondary coil can be inspected from the inspection terminal 54. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an ion generator in which at least a booster coil and a secondary circuit are potted in a casing.

  A conventional ion generator of this type receives supply of low-voltage AC power from the outside and supplies the AC power to the primary side of the booster coil. Then, high voltage AC power boosted from the secondary side is output. The output AC power is supplied to the discharge electrode via the secondary circuit. When high-voltage AC power is supplied to the discharge electrodes, a discharge is generated between the pair of discharge electrodes, and as a result, ions are released into the air.

  The primary side circuit, the secondary side circuit, and the booster coil are mounted on one circuit board and unitized, and the unitized one circuit board is set in the casing. (For example, refer to Patent Document 1).

Moreover, in order to make a height dimension lower than the ion generator described in this patent document 1, the thin ion generator was proposed as Japanese Patent Application No. 2006-27895.
JP 2003-45611 A (FIG. 1)

  In the conventional device, the high-voltage supply power output from the booster coil may be supplied to the discharge electrode in a state in which the waveform is changed by being rectified by, for example, a diode by the secondary circuit.

  In order to inspect the output waveform from the secondary coil of the booster coil, it is necessary to inspect the waveform before being input to the secondary side circuit, not the waveform supplied to the discharge electrode. However, in the ion generator, since the booster coil and the secondary side circuit are potted, the intermediate point between the secondary coil and the secondary side circuit of the booster coil is buried in the resin, and the output waveform of the secondary coil. Can not be inspected.

  Note that if the ion generator is operated before potting, it will be operated with insufficient insulation of the high voltage part, and there is a possibility that a waveform different from the final output waveform may be output. Voltage leakage occurs and is undesirable.

  In view of the above problems, an object of the present invention is to provide an ion generator that can inspect the output waveform of the secondary coil even when the booster coil and the secondary circuit are potted.

  In order to solve the above-described problems, an ion generator according to the present invention includes a booster coil including a primary coil to which low-voltage AC power is input and a secondary coil that outputs boosted high-voltage AC power; The waveform is changed in the ion generator in which the secondary circuit supplied to the discharge electrode for generating ions by changing the waveform of the AC power output from the secondary coil is potted in a state of being housed in the casing. In the previous stage, an inspection terminal for guiding the output from the secondary coil to the outside of the casing is provided.

  In the above configuration, since the inspection terminal is provided, the output waveform from the secondary coil can be inspected even if the step-up transformer and the secondary side circuit are potted.

  The discharge electrode is attached to the outer peripheral surface of the casing, and has a seal member that covers the boundary line between the discharge electrode and the casing in a state in which the discharge electrode is attached to the outer peripheral surface of the casing. If the configuration is such that the inspection terminal is exposed, the inconvenience caused by the exposure of the inspection terminal after completion of the inspection can be solved.

  As is clear from the above description, the present invention can inspect the output waveform of the secondary coil even when the booster coil and the secondary circuit are potted. Can be done.

  Referring to FIG. 1, reference numeral 1 denotes a primary circuit for supplying low voltage AC power supplied from an AC power supply B to the primary side of the booster coil 2. High voltage AC power is output from the secondary side of the booster coil 2 and supplied to the secondary side circuit 3. The high-voltage AC power is supplied to the discharge electrode 4, and discharge is generated at the discharge electrode 4, thereby generating ions and diffusing the ions into the air. The secondary circuit 3 is provided with a diode 32, and the high-voltage AC power output from the booster coil 2 is half-wave rectified and supplied to the discharge electrode 4.

  Referring to FIG. 2, the primary circuit 1 is formed on the primary circuit board 10, and the secondary circuit 3 is formed on the secondary circuit board 30. Reference numeral 5 denotes a bottomed casing that opens upward, and is formed by injection molding using resin as a raw material. When this resin is injection-molded, a power supply terminal 51 that is fed from an external AC power source B is provided integrally with the casing 5. An output electrode 52 that supplies AC power output from the secondary circuit board 30 to the discharge electrode 4 is also provided integrally with the casing 5. Similarly, an inspection terminal 54 for inspecting the output waveform of the booster coil 2 is provided integrally with the casing 5. This inspection terminal 54 is connected to the input terminal 31.

  Incidentally, a diode 32 is attached to the secondary circuit board 30, but a rectangular opening 33 is provided at a position where the diode 32 is attached, and a part of the body of the diode 32 is dropped into the opening 33. The height from the surface of the secondary circuit board 30 to the upper end of the main body of the diode 32 was made low.

  An input terminal 11 is attached to the primary circuit board 10. The primary circuit board 10 is set in the casing 5 closer to the center than the final mounting position, and the primary circuit board 10 is fed so that the feed terminal 51 is engaged with the input terminal 11 in this state. It was made to slide to the terminal 51 side. When the primary circuit board 10 is set at a predetermined position in this way, the secondary circuit board 30 is set in the casing 5 next. At that time, the output electrode 52 is inserted into the hole 34 provided in the secondary circuit board 30 so that the secondary circuit board 30 is set in the casing 5, and then the land surrounding the hole 34 and the output terminal 52 are arranged. Solder.

  Then, after setting the primary circuit board 10 and the secondary circuit board 30 in the casing 5, the booster coil 2 is set in the casing 5. As shown in FIG. 3, the booster coil 2 includes a pair of input terminals 23 a that pass through the bobbin 21 and a pair of output terminals 24 a that also pass through the bobbin 21. The winding of the primary coil is connected to the other end 23b of the input terminal 23a, and the winding of the secondary coil 24 is connected to the other end 24b of the output terminal 24a.

  When the booster coil 2 is inserted into the casing 5 from above, the input terminal 23a is engaged with the output terminal 12 of the primary circuit board 10, and one of the output terminals 24a of the booster coil 2 is the secondary circuit board. 30 input terminals 31 are engaged. However, since the input terminal 31 is connected to the inspection terminal 54 as described above, the inspection terminal 54 is connected to one of the output terminals 24a.

  Reference numeral 53 denotes an output terminal that forms a pair with the output terminal 52, and is inserted from the outside into a slit-shaped opening 53 a formed at the bottom of the casing 5 and fixed to the casing 5 as shown in FIG. 4. The other output terminal 24 a of the booster coil 2 is engaged with the output terminal 53. In this manner, with the output terminal 53 attached to the casing 5, urethane resin is injected into the casing 5 to perform potting.

  When performing this potting, as shown in FIG. 5, after attaching the flange member 6 to a pair of bosses 22 formed on the bobbin 21 of the booster coil 2, the resin surface S contacts the flange member 6. Inject the resin until. Then, the resin adheres to the flange member 6, the surface S around the flange member 6 is raised, and the booster coil 2 can be completely covered with the resin and the flange member 6.

  With reference to FIG. 4, reference numeral 40 denotes a discharge electrode plate on which the discharge electrode 4 is formed, and is fitted into a discharge electrode plate mounting portion 50 formed on the outer surface of the bottom of the casing 5. However, a pair of terminals are formed on the back surface of the discharge electrode plate 40. After connecting these terminals and the output terminals 52 and 53 with lead wires, the discharge electrode plate 40 is connected to the discharge electrode plate mounting portion 50. I tried to fit it in.

  Since the inspection terminal 54 is exposed on the surface of the casing 5 at this time, the output waveform of the secondary coil 24 of the booster coil 2 can be monitored and inspected from the output terminal 53 and the inspection terminal 54.

  When this inspection was completed, the discharge electrode plate 40 was fitted into the discharge electrode plate mounting portion 50, and a seal 7 was attached to close the gap between the discharge electrode plate 40 and the casing 5. The seal 7 is formed in a size that covers the gap and covers the inspection terminal 54. In addition, printing is possible on the surface of the seal 7. For example, if characters such as “high pressure caution” are printed as shown in the figure, it is not necessary to attach a separate seal for a caution note.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

Circuit diagram of an ion generator to which the present invention is applied Diagram showing assembly process of ion generator Diagram showing the configuration of the booster coil The figure which shows the attachment process of a discharge electrode plate Cross section of ion generator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Primary side circuit 2 Boost coil 3 Secondary side circuit 4 Discharge electrode 5 Casing 40 Discharge electrode plate 54 Inspection terminal

Claims (2)

  Ion by changing the waveform of the AC power output from the step-up coil composed of the primary coil to which low-voltage AC power is input and the secondary coil that outputs the boosted high-voltage AC power, and the secondary coil. In an ion generator that is potted with a secondary circuit supplied to a discharge electrode for generation housed in a casing, the output from the secondary coil is output to the outside of the casing before the waveform is changed. An ion generator characterized in that an inspection terminal for guiding is provided.   The discharge electrode is attached to the outer peripheral surface of the casing, and has a seal member that covers a boundary line between the discharge electrode and the casing in a state where the discharge electrode is attached to the outer peripheral surface of the casing, and the inspection terminal is covered with the seal member. The ion generator according to claim 1, wherein the ion generator is hidden.

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