JP2016068056A - Water sterilization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sterilization device capable of achieving miniaturization, long life, and power saving while ensuring required ultraviolet output by connecting straight tubular cold cathode lamps in series.SOLUTION: In a water sterilization device 1 which comprises a pipe body 2 allowing transmission of ultraviolet rays and ultraviolet lamps 3 housed in the pipe body 2, and sterilizes water by irradiation of ultraviolet rays emitted from the ultraviolet lamps 3, a straight tubular cold cathode lamp 3 is used as the ultraviolet lamp, and a plurality of cold cathode lamps 3 are connected in series. Lead wires 7 of the plurality of cold cathode lamps 3 are connected to each other by a splice band 8 or soldering.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water sterilizer for sterilizing water by irradiation with ultraviolet rays emitted from an ultraviolet lamp.

  BACKGROUND ART A water sterilizer that sterilizes drinking water or the like by irradiating ultraviolet rays includes a tube body such as a quartz tube that transmits ultraviolet rays and an ultraviolet lamp housed in the tube body. As such a water sterilizer, Patent Document 1 proposes one shown in FIG.

  That is, FIG. 5 is a longitudinal sectional view of the water sterilization apparatus proposed in Patent Document 1. The water sterilization apparatus 101 shown in FIG. 5 includes a water channel 110 through which water flows and a tube that is provided in the water channel 110 and transmits ultraviolet rays. A body 102, an ultraviolet lamp 103 provided in the tube body 102, and a sensor 111 provided in the tube body 102 are provided. In this water sterilization apparatus 101, the water flowing through the water channel 110 is sterilized by irradiating the ultraviolet light emitted from the ultraviolet lamp 103, but when water enters the tubular body 102 due to water leakage, This is detected by the sensor 111, power supply to the ultraviolet lamp 103 is stopped, and leakage into water is prevented.

Japanese Patent Laid-Open No. 2001-225065

  In the water sterilization apparatus 101 shown in FIG. 5 proposed in Patent Document 1, a hot cathode lamp is used as the ultraviolet lamp 103. Since this hot cathode lamp is thick and long, the water sterilization apparatus uses the same power. There is a problem that downsizing of 101 is impossible.

  In addition, since a filament coated with an emitter is used for the electrode of the hot cathode lamp, the life is short, for example, 8000 hours, and the light cannot be dimmed. Cannot be connected in series. For this reason, in the water sterilizer 101 shown in FIG. 6, the ultraviolet lamp 103 is bent into a U shape and accommodated in the tube body 102 in order to obtain a required ultraviolet output.

  The present invention has been made in view of the above problems, and its object is to connect a straight-tube cold-cathode lamp in series to ensure the required ultraviolet output, while reducing the size, extending the life and saving. It is providing the water sterilizer which can implement | achieve electric power.

  In order to achieve the above object, an invention according to claim 1 is provided with a tube body that transmits ultraviolet rays and an ultraviolet lamp accommodated in the tube body, and sterilizes water by irradiation with ultraviolet rays emitted from the ultraviolet lamp. In the sterilizer, a straight tubular cold cathode lamp is used as the ultraviolet lamp, and a plurality of cold cathode lamps are connected in series.

  According to a second aspect of the present invention, in the first aspect of the present invention, the lead wires of the plurality of cold cathode lamps are connected to each other by a splice band.

  According to a third aspect of the present invention, in the first aspect of the present invention, the lead wires of the plurality of cold cathode lamps are connected to each other by soldering.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a rubber socket is attached to lower ends of the plurality of cold cathode lamps, and the rubber socket is fitted to the inner wall of the tubular body. This prevents the cold cathode lamp and the tube from colliding with each other.

  According to the first aspect of the present invention, a straight tube cold cathode lamp which is thinner and shorter than a hot cathode lamp and has a high durability is used as an ultraviolet lamp, and a plurality of cold cathode lamps are connected in series. The water sterilizer can be miniaturized and have a long life and power saving while ensuring the required UV output.

  According to the second aspect of the present invention, the plurality of cold cathode lamps can be easily connected in series by connecting the lead wires of the plurality of cold cathode lamps with the splice band.

  According to the third aspect of the present invention, the plurality of cold cathode lamps can be easily connected in series by connecting the lead wires of the plurality of cold cathode lamps by soldering.

  According to the fourth aspect of the present invention, the rubber socket attached to the lower ends of the plurality of cold cathode lamps is fitted to the inner wall of the tubular body, thereby reliably preventing a collision between the cold cathode lamp and the tubular body. Can do.

It is a longitudinal cross-sectional view of the water sterilizer which concerns on this invention. It is a partial side view which shows the connection structure of the cold cathode lamp in the water sterilizer which concerns on this invention. It is the sectional view on the AA line of FIG. It is a partial side view which shows another form of the connection structure of the cold cathode lamp in the water sterilizer which concerns on this invention. It is a longitudinal cross-sectional view of the water sterilizer proposed in Patent Document 1.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a longitudinal sectional view of a water sterilizer according to the present invention, FIG. 2 is a partial side view showing a connection structure of a cold cathode lamp in the water sterilizer, and FIG. 3 is a sectional view taken along line AA in FIG.

  In the water sterilizer 1 according to the present invention, as shown in FIG. 1, two straight tubular cold cathode lamps 3, which are ultraviolet lamps, are inserted from above into a bottomed cylindrical tube body 2. Yes. Here, the tube body 2 is made of quartz glass or the like that transmits ultraviolet rays, and its upper end opening is closed by an upper rubber socket 4. The upper outer periphery of the tube body 2 is formed of a rubber packing 5 and a resin. It is fixed to a tank (not shown) via a fixed member 6 made of metal. The tank contains water to be sterilized.

  The upper rubber socket 4 and the rubber packing 5 are made of silicon rubber or the like having high resistance to ultraviolet rays. By providing the upper rubber socket 4 with a tapered portion 4a as shown in the figure, the opening diameter of the tubular body 2 varies. Can be absorbed by the tapered portion 4a, and the upper end opening of the tube body 2 can be reliably closed by the upper rubber socket 4 to be sealed watertight. The rubber packing 5 is interposed between the upper rubber socket 4 and the fixing member 6 and functions to seal both together in a watertight manner.

  By the way, the cold cathode lamp 3 used as an ultraviolet lamp in the present embodiment uses a metal cup (not shown) as an electrode, and thus has a long life of 20000 hours and can be dimmed. It is. Further, as shown in FIG. 2, one lead wire 7 extends from one side (the lower end in FIGS. 1 and 2) from the cold cathode lamp 3 whose electrode is a metal cup. Accordingly, when the ultraviolet output of one cold cathode lamp 3 is lower than a desired value, the lead wires 7 can be connected to each other to connect a plurality of cold cathode lamps 3 in series.

  In the present embodiment, a predetermined UV output is obtained by connecting two straight-tube cold cathode lamps 3 in series. In the present embodiment, however, a stapler-like lamp as shown in FIG. Two cold cathode lamps 3 are connected in series by connecting the lead wires 7 of both cold cathode lamps 3 with the splice band 8. Here, the splice band 8 is made of a conductive metal. As shown in FIG. 3, the lead wires 7 are connected in series by the splice band 8 by caulking the lead wires 7 to the bent portions 8 a at both ends thereof. Connected to. In the present embodiment, the lead wires 7 extending from the two cold cathode lamps 3 are connected to each other by the splice band 8, but the two lead wires 7 are soldered to each other as shown in FIG. You may make it connect by.

  Thus, the lower rubber socket 9 shown in FIG. 1 made of silicon rubber is attached to the connecting portion of the lead wire by the splice band 8, and the lower rubber socket 9 is fitted to the inner wall of the tube body 2. Thus, the cold cathode lamps 3 are supported vertically in the tube body 2 while being kept parallel. Therefore, the collision between the two cold cathode lamps 3 and the tube body 2 is prevented by the lower rubber socket 9, and the cold cathode lamp 3 and the tube body 2 are not cracked by the collision.

  In the water sterilizer 1 shown in FIG. 1 configured as described above, when current is supplied from a power source (not shown) to the two cold cathode lamps 3 connected in series, the two cold cathode lamps 3 Turns on and emits ultraviolet rays. Then, the ultraviolet rays are transmitted through the transparent quartz glass tube 2 and irradiated to water stored in a tank (not shown), and the water irradiated with the ultraviolet rays is sterilized by the sterilizing action of the ultraviolet rays.

  Thus, in the water sterilization apparatus 1 according to the present embodiment, the cold cathode lamp 3 which is thinner and shorter than the conventionally used hot cathode lamp and has a long life is used. Since the cold-cathode lamps 3 are connected in series, the water sterilizer 1 can be downsized, have a long life, and can save power while ensuring the required UV output.

  In the present embodiment, the two cold cathode lamps 3 can be easily connected in series by connecting the lead wires 7 of the two cold cathode lamps 3 with the splice band 8.

  In the present embodiment, two cold cathode lamps 3 are connected in series. However, the number of cold cathode lamps 3 connected in series is arbitrary, and depends on the required ultraviolet output. What is necessary is just to determine a number.

  The water sterilizer according to the present invention is a water server. Widely used for sterilization of water used in water dispensers, tea dispensers, water purifiers, etc.

1 Water Sterilizer 2 Tube 3 Cold Cathode Lamp (Ultraviolet Lamp)
4 Upper rubber socket 5 Rubber packing 6 Fixing member 7 Lead wire 8 Splice band 9 Lower rubber socket

Claims (4)

In a water sterilizer comprising a tubular body that transmits ultraviolet light, and an ultraviolet lamp housed in the tubular body, and sterilizing water by irradiation of ultraviolet light emitted from the ultraviolet lamp,
A water sterilizer characterized in that a straight tubular cold cathode lamp is used as the ultraviolet lamp, and a plurality of cold cathode lamps are connected in series.   The water sterilizer according to claim 1, wherein the lead wires of the plurality of cold cathode lamps are connected by a splice band.   The water sterilizer according to claim 1, wherein the lead wires of the plurality of cold cathode lamps are connected to each other by soldering. A rubber socket is attached to lower ends of the plurality of cold cathode lamps, and the rubber socket is fitted to an inner wall of the tubular body to prevent collision between the cold cathode lamp and the tubular body. Item 4. The water sterilizer according to any one of Items 1 to 3.

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