JP2014100690A - Water sterilization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sterilization device in which reduction of production costs and assembly man-hours can be achieved, and a state of an O ring can be performed by visual inspection at assembly.SOLUTION: An outer cylinder case 2 of a water sterilization device 1 is composed by a cylindrical member in which a longer direction both ends of the same are opened, an apertural area inner periphery of the outer cylinder case 2 is fitted by a ring-shaped O ring cap (holding member) 5 through O rings 11, 12 supported by a circumference of the same, the O ring cap 5 is made to perform penetration support to a protective pipe 3 and the longer direction end of a UV discharge lump 4 accommodated by the same, and these penetration parts are sealed by an O ring 11 held at an inner periphery of the O ring cap 5, a socket cap (lid member) that fits to the apertural area inner periphery of the outer cylinder case 2 is hit from an outside of the O ring cap 5, the socket cap 6 is fixed by a C ring 13 that is fitted to the apertural area inner periphery of the outer cylinder case 2.

Description

  The present invention relates to a water sterilizer for sterilizing water with ultraviolet rays irradiated from an ultraviolet discharge lamp.

  For example, as a water sterilizer for sterilizing water used in a water purifier, a water cooler, a humidifier, etc., a device that employs a method of sterilizing water with ultraviolet rays irradiated from an ultraviolet discharge lamp is known. Such a water sterilization apparatus is configured to dispose of an ultraviolet discharge lamp accommodated in a protective tube in an outer cylinder case and sterilize water flowing in the outer cylinder case with ultraviolet rays irradiated from the ultraviolet discharge lamp. .

  By the way, regarding this type of water sterilization apparatus, Patent Document 1 discloses that an outer cylinder case is divided into two in the longitudinal direction, one divided piece is formed into a bag shape (bottomed cylindrical shape), and both divided pieces are screwed together. In addition, a configuration has been proposed in which an outer cylindrical case is formed and a portion where the protective tube and the ultraviolet discharge lamp pass through the opening of the other divided piece is sealed watertight by an O-ring.

  Further, in Patent Document 2, a portion through which the protective tube and the ultraviolet discharge lamp penetrate the opening of the outer case is provided with a plurality of O-rings, a holding member for holding the same, and a tightening nut screwed to the holding member. A watertight seal configuration has been proposed.

Japanese Utility Model Publication No. 6-048882 JP 7-000955 A

  However, in the configuration proposed in Patent Document 1, it is necessary to form one divided piece of the outer cylinder case into a bag shape, so that the formation is not easy and the manufacturing cost is greatly increased. There's a problem.

  Further, in the configuration proposed in Patent Document 2, it is necessary to perform threading on the holding member that forms the watertight sealing structure by the O-ring, resulting in an increase in cost and an increase in assembly man-hours and assembly time. There's a problem. Further, since the O-ring is pushed in by tightening the tightening nut, it is impossible to visually check whether the O-ring is normally held in the groove portion of the holding member. For this reason, there exists a problem that the watertightness confirmation test | inspection for ensuring the reliability of the watertight sealing structure of an outer cylinder case is needed separately.

  The present invention has been made in view of the above-mentioned viewpoints, and the target process is a water sterilizer that can reduce the manufacturing cost and the number of assembly steps, and can visually check the state of the O-ring during assembly. It is to provide.

In order to achieve the above object, according to the first aspect of the present invention, an ultraviolet discharge lamp accommodated in a protective tube is installed in an outer cylinder case, and water flowing in the outer cylinder case is irradiated from the ultraviolet discharge lamp. In water sterilizers sterilized by ultraviolet rays,
The outer cylinder case is composed of a cylindrical member whose both longitudinal ends are open,
A ring-shaped holding member is fitted to the inner periphery of the opening of the outer cylinder case via an O-ring held on the outer periphery, and the protective tube and the ultraviolet discharge lamp housed inside the holding member are fitted to the holding member. While letting the longitudinal direction end portion pass through and hold, these through portions are sealed by an O-ring held on the inner periphery of the holding member,
A lid member fitted to the inner periphery of the opening of the outer cylinder case is applied from the outside of the holding member, and the lid member is fixed by a C-ring fitted to the inner periphery of the opening of the outer cylinder case.

  According to a second aspect of the present invention, in the first aspect of the present invention, one groove is formed on the inner and outer circumferences of the holding member, and the O-ring is fitted and held in each of the one groove. .

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a hole is formed in the lid member, and a power supply line connected to both longitudinal ends of the ultraviolet discharge lamp is passed through the hole of the lid member. It is characterized by being taken out of the cylinder case.

  According to the first aspect of the invention, since the outer cylinder case is configured by the cylindrical member whose both ends in the longitudinal direction are open, the outer cylinder case can be obtained only by cutting the pipe, and the manufacturing cost can be kept low. Can do. In addition, since the lid member is fixed to the inner periphery of the opening of the outer cylinder case by the C-ring, there is no need to thread the outer cylinder case or the lid member, reducing the processing cost, the number of assembly steps, and the assembly time. Can be planned.

  According to the second aspect of the present invention, the state of the O-ring held in the single groove formed on the inner and outer circumferences of the holding member can be visually observed at the time of assembly, so the reliability of the water sealing structure of the outer cylinder case And the watertightness check inspection can be omitted.

  According to the invention described in claim 3, since the power supply line connected to both ends in the longitudinal direction of the ultraviolet discharge lamp is taken out of the outer casing through the hole of the lid member, it is not necessary to pass the power supply line into the protective tube. Thus, the inner diameter of the protective tube can be made smaller and thinner, and the water flow volume can be increased by the decrease in the volume to increase the treatment capacity. Further, since the power supply line does not pass through the outer case, the power supply line is not shaded by ultraviolet rays, and the amount of ultraviolet radiation is increased, so that a high sterilization effect can be obtained.

It is a perspective view of the water sterilizer concerning the present invention. It is a front view of the water sterilizer concerning the present invention. It is a top view of the water sterilizer which concerns on this invention. It is a side view of the water sterilizer concerning the present invention. It is the sectional view on the AA line of FIG. It is the B section enlarged detail drawing of FIG. It is a disassembled perspective view which shows the watertight sealing structure of the outer cylinder case opening part of the water sterilizer which concerns on this invention. It is a disassembled perspective view which shows the watertight sealing point of the outer cylinder case opening part of the water sterilizer which concerns on this invention.

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

  1 is a perspective view of a water sterilizer according to the present invention, FIG. 2 is a front view of the water sterilizer, FIG. 3 is a plan view of the water sterilizer, FIG. 4 is a side view of the water sterilizer, and FIG. 4 is a cross-sectional view taken along line AA in FIG. 4, FIG. 6 is an enlarged detail view of a portion B in FIG. 5, FIG. 7 is an exploded perspective view showing a watertight sealing structure of an outer cylinder case opening of the water sterilizer, and FIG. It is a disassembled perspective view which shows the watertight sealing point of an outer cylinder case opening part.

  As shown in FIG. 5, the water sterilization apparatus 1 according to the present embodiment is configured by arranging a protective tube 3 and an ultraviolet discharge tube 4 accommodated in the central portion of a cylindrical outer cylinder case 2. The openings at both ends in the longitudinal direction of the outer case 2 are closed by an O-ring cap 5 that is a holding member having a watertight sealing structure and a socket cap 6 that is a lid member.

  The outer cylinder case 2 is constituted by a cylindrical member that is open at both ends in the longitudinal direction, and is obtained by cutting a hard vinyl chloride pipe or a fluororesin pipe that has relatively little quality deterioration due to ultraviolet rays. In addition, an inlet 2a and an outlet 2b are formed at the upper ends of both ends in the longitudinal direction of the outer cylinder case 2, respectively, and these inlet 2a and outlet 2b are bent in an L-shape. The plugs 7 and 8 are attached. Although not shown, a water supply pipe and a drain pipe are connected to the plugs 7 and 8, respectively.

  The protective tube 3 is configured as a cylindrical member that is open at both ends in the longitudinal direction, and quartz glass that absorbs less ultraviolet light is used as its material. The protective tube 3 accommodates the ultraviolet discharge lamp 4 in the form of a long and narrow bar, and feed lines (wire harnesses) 9 and 10 are connected to both ends of the ultraviolet discharge lamp 4 in the longitudinal direction. . In the present embodiment, a cold cathode discharge lamp is used as the ultraviolet discharge lamp 4.

  By the way, although the opening part of the longitudinal direction both ends of the outer cylinder case 2 is obstruct | occluded by the O-ring cap 5 and the socket cap 6 as mentioned above, as shown in FIGS. It is molded in a ring shape. In addition, as shown in detail in FIG. 5, ring-shaped one-side grooves 5 a and 5 b that open toward the outside (right side in FIG. 5) are formed on the inner and outer circumferences of each O-ring cap 5. O-rings 11 and 12 having different diameters are fitted and held in the single grooves 5a and 5b, respectively.

  As shown in FIG. 5, the axial ends of the protective tube 3 and the ultraviolet discharge lamp 4 accommodated therein are inserted and supported on the inner periphery of the O-ring cap 5. Sealed by a ring 11. The outer circumference of each O-ring cap 5 is fitted to the inner circumference of the opening of the outer cylinder case 2 via the O-ring 12 fitted thereto, and the outer circumference of the O-ring cap 5 and the outer cylinder case 2 are fitted. The inner periphery of the opening is sealed by an O-ring 12.

  The socket caps 6 that fit into the inner periphery of the opening of the outer cylinder case 2 are in contact with the outer sides of the O-ring caps 5, and the socket caps 6 are arranged on the inner periphery of the opening of the outer cylinder case 2. Each is fixed by a C-ring 13 fitted in the groove 2c. Further, a bulging portion 6A that bulges outward is formed at the center of each socket cap 6, and a circular hole 6a is formed at the top of each bulging portion 6A. Here, the rubber sockets 14 accommodated and held in the bulging portions 6A of the socket caps 6 are inserted into the connection ends of the power supply lines 9 and 10 connected to the longitudinal ends of the ultraviolet discharge lamp 4, respectively. The feeder lines 9 and 10 extending from the rubber sockets 14 are drawn out of the outer case 2 through the circular holes 6a formed in the bulging portions 6A of the socket caps 6.

  Here, the assembly procedure of the watertight sealing structure at the opening of the outer cylinder case 2 will be described with reference to FIGS.

  First, the protective tube 3 in which the ultraviolet discharge lamp 4 is accommodated is set inside the outer cylinder case 2, and the O-ring cap 5 shown in FIG. The rings 11 and 12 are fitted, respectively, and the O-ring cap 5 into which the O-rings 11 and 12 are fitted is passed through the protective tube, the power supply ships 9 and 10 and the rubber socket 14, and the O-ring cap 5 is shown in FIG. Is fitted into the inner periphery of the end opening of the outer cylinder case 2. At this time, the power supply ships 9 and 10 and the rubber cap 14 are drawn out of the O-ring cap 5.

  Next, power supply lines 9 and 10 (only one power supply line 10 is shown in FIG. 8) are passed through a circular hole 6a formed in the bulging portion 6A of the socket cup 6, and the socket cap 6 is attached to the outer cylinder case. 2, the socket cap 6 is fixed to the outer cylinder case 2 by applying the C ring 13 to the groove 2c on the inner periphery of the opening of the outer cylinder case 2 from the outside. The rubber socket 14 is housed inside the outer cylinder case 6 and the assembly of the watertight sealing structure at the opening of the outer cylinder case 2 is completed.

  In the water sterilization apparatus 1 configured as described above, when a voltage is applied to the ultraviolet discharge lamp 4 from a power source (not shown) via the feeder lines 9 and 10, the ultraviolet discharge lamp 4 is turned on. In FIG. 2, water flowing from a water supply pipe (not shown) through the plug 7 and the inlet 2a is discharged from the outlet 2b through the plug 8 and a drainage pipe (not shown). When the flowing water is irradiated with ultraviolet rays emitted from the ultraviolet discharge lamp 4, the water is sterilized by the sterilizing action of the ultraviolet rays.

  Thus, in the water sterilization apparatus 1 according to the present embodiment, the outer cylinder case 2 is constituted by a cylindrical member that is open at both longitudinal ends thereof, so that the outer cylinder case 2 can be obtained only by cutting the pipe. The manufacturing cost can be kept low.

  In addition, since the socket cap 6 is fixed to the inner periphery of the opening of the outer cylinder case 2 by the C ring 13, it is not necessary to thread the outer cylinder case 2 and the socket cap 6, thereby reducing processing costs and assembly steps. The assembly time can be shortened.

  And in the water sterilizer 1 which concerns on this invention, since the state of the O-rings 11 and 12 hold | maintained at the single grooves 5a and 5b formed in the inner and outer periphery of the O-ring cap 5 can be visually observed at the time of an assembly, While the reliability of the water sealing structure of the opening part of the outer cylinder case 2 is improved, the watertightness confirmation test | inspection conventionally required can be abbreviate | omitted.

  Further, in the present embodiment, the feeders 9 and 10 connected to both ends in the longitudinal direction of the ultraviolet discharge lamp 4 are taken out of the outer case 2 through the circular holes 6a formed in the bulging portion 6A of the socket cap 6. Therefore, it is not necessary to pass the feeders 9 and 10 through the protective tube 3, thereby reducing the inner diameter of the protective tube 3 and reducing the inner diameter of the protective tube 3, and increasing the water flow volume by the reduced volume. Can be increased. Further, since the power supply lines 9 and 10 do not pass through the outer casing 2, the power supply lines 9 and 10 are not shaded by ultraviolet rays, and the ultraviolet radiation amount 4 is increased to obtain a high sterilizing effect.

  The present invention is suitably applicable to water sterilizers used in water purifiers, water coolers, humidifiers, dishwashers, washing machines, dental dental chairs, and the like.

DESCRIPTION OF SYMBOLS 1 Water sterilizer 2 Outer cylinder case 2A Thick part of outer cylinder case 2a Outlet of outer cylinder case 2b Extraction port of outer cylinder case 2c Groove of outer cylinder case 3 Protective tube 4 Ultraviolet discharge lamp 5 O ring cap (holding member )
5a, 5b O-ring cap single groove 6 Socket cap (lid member)
6A Socket cap bulge 6a Socket cap hole (hole)
7,8 Plug 9,10 Feed line 11,12 O-ring 13 C-ring 14 Rubber socket

Claims (3)

In a water sterilizer for installing an ultraviolet discharge lamp accommodated in a protective tube in an outer cylinder case and sterilizing water flowing in the outer cylinder case with ultraviolet rays irradiated from the ultraviolet discharge lamp,
The outer cylinder case is composed of a cylindrical member whose both longitudinal ends are open,
A ring-shaped holding member is fitted to the inner periphery of the opening of the outer cylinder case via an O-ring held on the outer periphery, and the protective tube and the ultraviolet discharge lamp housed inside the holding member are fitted to the holding member. While letting the longitudinal direction end portion pass through and hold, these through portions are sealed by an O-ring held on the inner periphery of the holding member,
A lid member fitted to the inner periphery of the opening of the outer cylinder case is applied from the outside of the holding member, and the lid member is fixed by a C ring fitted to the inner periphery of the opening of the outer cylinder case. Sterilizer.   The water sterilizer according to claim 1, wherein one groove is formed on each of the inner and outer circumferences of the holding member, and the O-ring is fitted and held in each groove. The hole is formed in the said cover member, The electric power feeding line connected to the longitudinal direction both ends of the said ultraviolet discharge lamp was taken out to the exterior of the said outer cylinder case through the hole of the said cover member. Water sterilizer.

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