JP2013166126A - Flowing water sterilizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flowing water sterilizing apparatus having high efficiency of use of ultraviolet rays, capable of being miniaturized, and using a cold cathode discharge lamp.SOLUTION: A cylindrical body unit 5 and a pair of cup-shaped cap units 6 and 8 arranged to close both ends of the body unit 5, which are individually formed, are integrated so as to form an exterior casing 4, an inflow port 6c for introducing water to be treated or an outflow port 8c for delivering the treated water after sterilizing is provided on the cap units 6 and 8, and holding sockets 7 and 9 for integrally holding terminals of an ultraviolet lamp 2 emitting ultraviolet rays and an outer bulb 3 surrounding the ultraviolet lamp are attached. The ultraviolet lamp 2 and the outer bulb 3 having both terminals held by the holding sockets 7 and 9 are stored in a water flow passage 12 formed in body parts 6b and 8b and the body unit 5.

Description

  The present invention relates to a running water sterilization apparatus, and more particularly to a particularly small running water sterilization apparatus that performs sterilization of running water containing various bacteria by irradiating ultraviolet rays emitted from a cold cathode type discharge lamp lamp.

  Conventionally, as a running water sterilizer, there exists a thing described in Japanese Utility Model Laid-Open No. 6-48882, for example.

  As shown in FIG. 8, a quartz glass protective tube 81 is disposed outside an ultraviolet germicidal lamp 80 located in the center, and an outer case 83 and an outlet 84 provided with an inlet 82 are further provided outside thereof. The outer cylinder case 85 provided is connected and arranged.

  And the to-be-sterilized water containing germs taken in from the inlet 82 is sterilized by irradiation with ultraviolet rays that are emitted from the ultraviolet sterilization lamp 80 and pass through the quartz glass protective tube 81 while flowing through the outer casing case space 86. The sterilized water that has been subjected to the various bacteria treatment is discharged from the outlet 84.

Japanese Utility Model Publication No. 6-48882

  By the way, the flowing water sterilizer having the above structure is provided with an O-ring 87 in the vicinity of both end portions of the ultraviolet germicidal lamp 80 and the quartz glass protective tube 81 to provide a waterproof structure for the ultraviolet germicidal lamp 80 and the quartz glass protective tube 81. , 85 are protruded from the end of the ultraviolet germicidal lamp 80 and are protected externally by a germicidal lamp cover 88 attached to the respective outer case 83, 85.

  Therefore, the ultraviolet germicidal lamp 80 is located on the outer side of the outer cylinder cases 83 and 85 from the waterproof portion where the O-ring 87 is attached, and is connected to the inlet 82 and the outer cylinder case 85 provided in the outer cylinder case 83. All of the provided outlets 84 are located on the inner side (center side) from the mounting position of the O-ring 87.

  Then, the inflow port 82 and the outflow port 84 are located closer to the center with respect to the longitudinal direction of the ultraviolet germicidal lamp 80 or the like, and the distance between the inflow port 82 and the outflow port 84 is shortened.

  Therefore, when the ultraviolet germicidal lamp 80 is a hot cathode tube, the electrode portions at both ends are long and the non-light emission length is long, and the effective light emission length is shortened accordingly. Therefore, the distance between the inflow port 82 and the outflow port 84 can be made approximately the same as the effective light emission length of the ultraviolet germicidal lamp 80.

  On the other hand, when the ultraviolet germicidal lamp 80 is a cold cathode tube, the non-light emission length is short, and the effective light emission length can be increased correspondingly. Then, the distance between the inflow port 82 and the outflow port 84 becomes shorter than the effective light emission length of the ultraviolet germicidal lamp 80, and the ultraviolet rays radiated from the ultraviolet germicidal lamp 80 also irradiate areas other than the flow path of the sterilized water. It will be. As a result, the characteristics of the cold cathode tube having a long effective light emission length cannot be utilized, and the utilization efficiency of the ultraviolet irradiation light becomes poor, and it can be said that the structure is not particularly suitable for downsizing of the running water sterilizer.

  Therefore, the present invention was devised in view of the above problems, and the object of the present invention is to provide a running water sterilizer using a cold cathode discharge lamp having a structure in which the utilization efficiency of ultraviolet rays is high and the size can be reduced. It is to provide.

  In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention is a flowing water sterilization apparatus that performs sterilization treatment by irradiating ultraviolet rays to water to be treated containing various germs flowing through a flowing water channel, Each of the pair of cap units is integrally provided with a cylindrical body unit formed individually and a pair of cup-shaped cap units arranged so as to close both ends of the body unit. It has an annular body that rises toward the body unit from the edge of the bottom, and discharges treated water after sterilization to the inflow port for introducing water to be treated before sterilization to each body. Each of the bottoms is integrally held with the ends of a cold-cathode discharge lamp that emits ultraviolet rays and a cylindrical outer bulb made of an ultraviolet transmitting member that surrounds the discharge lamp. Socket The discharge lamp and the outer bulb, which are attached and held in the pair of holding sockets, are accommodated in a water channel formed by the body unit and the pair of cap units. is there.

  Further, according to a second aspect of the present invention, in the first aspect, the body unit and the pair of cap units are integrated by screwing together screw portions provided respectively. It is characterized by.

  The flowing water sterilization apparatus of the present invention includes an outer casing, a trunk unit that forms a flow path of the water to be treated, and both ends of the trunk unit, and includes an inlet of the water to be treated or an outlet of the treated water, and an ultraviolet ray. A unit integrated structure comprising: an ultraviolet lamp that irradiates and an outer bulb that surrounds the ultraviolet lamp and prevents the ultraviolet lamp from touching the water to be treated; did.

  As a result, for the exterior housing, the length of the flow path of the water to be treated can be changed by replacing only the body unit. It becomes possible to respond easily.

  In addition, since the inlet of the treated water or the outlet of the treated water is located near the end of the ultraviolet lamp, the ultraviolet ray emitted from the ultraviolet lamp is effectively radiated to the water channel from the inlet to the outlet without waste. Thus, a running water sterilizer with high ultraviolet irradiation efficiency is realized. At the same time, the cold cathode UV lamp, which has a shorter non-light emitting length in the non-light emitting area near the both end electrodes than the hot cathode UV lamp, can take advantage of the cold cathode UV lamp. It can be said that the structure is suitable for.

It is a longitudinal section explanatory view of a running water sterilizer of an embodiment. It is explanatory drawing of each unit which comprises an exterior housing | casing. FIG. 3 is a detailed explanatory diagram of a part A in FIG. 2. It is explanatory drawing of the exterior housing | casing by a unit integrated structure. FIG. 5 is a detailed explanatory diagram of a B part in FIG. 4. It is integral explanatory drawing of an ultraviolet lamp, an outer bulb | bulb, and a holding | maintenance socket. It is a longitudinal cross-sectional explanatory drawing of the flowing water sterilizer of other embodiment. It is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7 (the same parts are given the same reference numerals). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  FIG. 1 is a longitudinal sectional view of a running water sterilizer according to an embodiment of the present invention.

  The running water sterilizer 1 includes a cold cathode type discharge lamp (hereinafter abbreviated as “ultraviolet lamp”) 2 that radiates ultraviolet rays and a cylindrical outer bulb that is made of, for example, quartz glass that transmits ultraviolet rays and surrounds the ultraviolet lamp 2. 3 and an outer casing 4 in which an ultraviolet lamp 2 and an outer bulb 3 are provided.

  The exterior housing 4 has a unit structure including a cylindrical body unit 5 and a pair of cap units 6 and 8 that are airtightly attached to both ends of the body unit 5.

  One cap unit 6 has a cup shape composed of a bottom 6a and an annular body 6b rising from the edge of the bottom 6a. The bottom 6a has one of the ultraviolet lamp 2 and the outer bulb 3 at the center. A holding socket 7 for holding the end portion is airtightly attached, and the trunk portion 6b is provided with an inlet 6c for taking in water 10 to be sterilized (hereinafter abbreviated as “treated water”). .

  The other cap unit 8 has a cup shape composed of a bottom portion 8a and an annular body portion 8b rising from the edge of the bottom portion 8a, and the bottom portion 8a has the other part of the ultraviolet lamp 2 and the outer bulb 3 at the center. A holding socket 9 that holds the end portion is airtightly attached, and the body portion 8b is provided with an outlet 8c that discharges water 11 after being sterilized (hereinafter abbreviated as “treated water”). ing.

  A doughnut-shaped region between the inner surface of the outer casing 4 and the outer surface of the outer valve 3 forms a flow channel 12 of the water to be treated.

  Therefore, when the treated water 10 containing various germs is taken from the inflow port 6c into the flowing water channel 12 from the outside of the flowing water sterilizer 1 with the ultraviolet lamp 2 turned on (discharge light emission), the ultraviolet ray 2 is emitted. Ultraviolet rays 13 pass through the outer bulb 3 and irradiate the water to be treated 10 flowing through the water flow path 12, and germs contained in the water to be treated 10 are sterilized, disinfected, and inactivated by the ultraviolet light. And the processed water 11 in which the ultraviolet sterilization process was performed is discharge | released out of the flowing water sterilizer 1 from the outflow port 8c.

  By the way, when performing the sterilization of the to-be-processed water containing the various germs with high UV resistance, the flowing water sterilizer 1 can be considered to increase the sterilizing power against the to-be-treated water.

  In that case, as a specific method, (1) slow down the flow rate of the water to be treated flowing through the flow channel and lengthen the time for which the ultraviolet rays are irradiated, or (2) the ultraviolet rays emitted from the ultraviolet lamp. It is conceivable to increase the output (ultraviolet light output) and irradiate with strong ultraviolet light, or (3) increase the length of the flow channel through which the water to be treated flows to increase the time during which the ultraviolet light is irradiated.

  Among these methods, the method (1) of slowing down the flow rate of the water to be treated results in poor sterilization efficiency because the sterilization capacity per unit time is reduced. Further, the method (2) of increasing the ultraviolet output increases the power consumption of the ultraviolet lamp and increases the running cost.

  On the other hand, the direction in which the flow channel of (3) is lengthened is either the problem of a decrease in sterilization treatment efficiency possessed by the method (1) or the problem of a rising running cost possessed by the method (2). There is no problem. However, in order to secure a desired sterilizing power, it may be necessary to change the length of the water channel to an appropriate length as necessary.

  The flowing water sterilization apparatus of the present invention has an exterior housing in a unit integrated structure so that it can easily cope with such a change in the length of the flowing water channel.

  Specifically, as shown in FIG. 2 (an explanatory diagram of each unit constituting the exterior casing), the exterior casing 4 includes a cylindrical trunk unit 5 that forms a water channel for water to be treated, and a trunk unit. 5 is a unit integrated structure with a pair of cup-shaped cap units 6 and 8 that are attached to both ends of the airtightly.

  Each of the cap units 6 and 8 is provided with an inlet / outlet of flowing water penetrating through the barrel portions 6b and 8b in the barrel portions 6b and 8b. It becomes. The cap units 6 and 8 are provided with socket mounting holes 6f and 8f that penetrate the bottom portions 6a and 8a and mount the holding sockets 7 and 9 in an airtight manner in the bottom portions 6a and 8a, respectively.

  In this case, as shown in FIG. 3 (part A detailed explanatory view of FIG. 2), the cap unit 6 has a male thread 6d cut on the outer peripheral surface of the end portion of the body portion 6b, and an inner peripheral surface of the body unit 5 at one end. The female screw 5a is cut. Further, the cap unit 6 is provided with an annular O-ring housing groove 6e along the outer circumferential surface of the body portion 6b, and an O-ring 15 is housed in the O-ring housing groove 6e.

  Similarly, the cap unit 8 has a male screw (8d) cut on the outer peripheral surface of the body portion 8b, and the body unit 5 has a female screw (5b) cut on the inner peripheral surface of the other end. The cap unit 8 is provided with an annular O-ring receiving groove (8e) on the outer peripheral surface of the body portion 8b along the outer peripheral surface, and the O-ring (16) is received in the O-ring receiving groove (8e). ing.

  Then, as shown in FIG. 4 (explanatory drawing of the exterior housing with the unit integrated structure), by screwing the end male screw 6d of the body 6b of the cap unit 6 and the end female screw 5a of the body unit 5, The cap unit 6 and the body unit 5 are detachably waterproof-bonded via an O-ring 15 (see FIG. 5 (detailed explanation of part B in FIG. 4)).

  Similarly, the end male screw (8d) of the body part 8b of the cap unit 8 and the end female thread (5b) of the body unit 5 are screwed together, whereby the cap unit 8 and the body unit 5 are connected to the O-ring (16). It is waterproofly joined via a detachable.

  Therefore, in order to lengthen the irradiation time of the ultraviolet rays irradiated to the water to be treated and enhance the sterilizing power, the cap units 6 and 8 are used as they are, and only the body unit 5 is replaced with a long one. . Naturally, it is necessary to use an ultraviolet lamp and an outer bulb instead of one having a length corresponding to the exterior casing 4 constituted by the replaced body unit 5.

  When the unit of the body unit 5 and the pair of cap units 6 and 8 is assembled, the holding sockets 7 and 9 are attached to the respective ends of the ultraviolet lamp 2 and the outer bulb 3 surrounding the ultraviolet lamp 2 in advance. (Refer to FIG. 6 (integral explanatory diagram of ultraviolet lamp, outer bulb and holding socket)), one holding socket 7 is hermetically mounted in the socket mounting hole 6f of one cap unit 6, and the cap unit 6 is attached to the body unit 5. Screw into one end, insert part of the other holding socket 9 into the socket mounting hole 8f of the other cap unit 8, and screw the cap unit 8 into the other end of the body unit 5. Thus, the holding socket 9 is hermetically mounted in the socket mounting hole 8f (see FIG. 2).

  In addition, although the positional relationship of the inflow port 6c of the to-be-processed water 10 and the outflow port 8c of the treated water 11 is set so that both may face the same direction in the said embodiment, it is not necessarily restricted to this. Instead, as shown in FIG. 7 (a longitudinal sectional explanatory view of the flowing water sterilizer of another embodiment), the inlet 6c of the water to be treated 10 and the outlet 8c of the treated water 11 are directed in opposite directions to each other. It is also possible to set. That is, the positional relationship between the two is provided at an appropriate position of the cap unit in consideration of installation conditions such as the installation location of the running water sterilizer and the piping structure.

  As described above, the running water sterilization apparatus of the present invention closes the outer casing, the body unit forming the flow path of the water to be treated, and both ends of the body unit, the inlet of the water to be treated or the treated water. Cap unit equipped with a holding socket that integrally holds ends of an ultraviolet lamp that has an outlet and irradiates ultraviolet rays and an outer bulb that surrounds the ultraviolet lamp and prevents the ultraviolet lamp from touching water to be treated A unit integrated structure.

  As a result, for the exterior housing, the length of the flow path of the water to be treated can be changed by replacing only the body unit. It becomes possible to respond easily.

  In addition, since the inlet of the treated water or the outlet of the treated water is located near the end of the ultraviolet lamp with respect to the direction of the treated water, the ultraviolet light emitted from the ultraviolet lamp flows from the inlet. A flowing water sterilizer with high ultraviolet irradiation efficiency is realized by effectively irradiating the flowing water channel to the outlet without waste.

  Furthermore, the fact that the inlet of the treated water or the outlet of the treated water is located near the end of the ultraviolet lamp with respect to the flowing direction of the treated water is closer to both end electrodes than the hot cathode type ultraviolet lamp. A cold cathode type ultraviolet lamp having a short non-emission length in a non-light emitting region can take advantage of the advantage, and can be said to be a structure suitable for using a cold cathode type ultraviolet lamp.

  The inlet of the treated water or the outlet of the treated water can be easily provided at an appropriate position of the cap unit, and the installation conditions such as the installation space and the piping structure can be easily handled when installing the running water sterilizer. Can do.

  In the above description, a cold cathode type discharge lamp is used for ultraviolet irradiation, but the characteristics of the flowing water sterilization apparatus having the above configuration can be utilized even when a hot cathode type discharge lamp is used. However, by using a cold cathode type discharge lamp, the characteristics of the flowing water sterilizer can be utilized more than a hot cathode type discharge lamp.

DESCRIPTION OF SYMBOLS 1 ... Running water sterilizer 2 ... Ultraviolet lamp 3 ... Outer bulb 4 ... Outer housing 5 ... Body unit 5a ... Female screw 5b ... Female screw 6 ... Cap unit 6a ... Bottom 6b ... Body 6c ... Inlet 6d ... Male screw 6e ... O-ring Housing groove 6f ... Socket mounting hole 7 ... Holding socket 8 ... Cap unit 8a ... Bottom 8b ... Body 8c ... Outlet 8d ... Male screw 8e ... O-ring housing groove 8f ... Socket mounting hole 9 ... Holding socket 10 ... Water to be treated 11 ... treated water 12 ... flowing water channel 13 ... ultraviolet ray 15 ... O-ring 16 ... O-ring

Claims (2)

A running water sterilization device that performs sterilization treatment by irradiating ultraviolet rays to water to be treated containing various germs flowing through a flowing water channel,
A cylindrical body unit formed individually and a pair of cup-shaped cap units arranged so as to close both ends of the body unit are integrally provided,
Each of the pair of cap units has a bottom part and an annular body part rising from the edge part of the bottom part toward the body unit side,
Each barrel includes an inlet for introducing water to be treated before sterilization or an outlet for discharging treated water after sterilization,
Each bottom is mounted with a holding socket that integrally holds the ends of a cold cathode type discharge lamp that emits ultraviolet rays and a cylindrical outer bulb made of an ultraviolet transmitting member that surrounds the discharge lamp,
The running water sterilizer characterized in that the discharge lamp and the outer bulb held in the pair of holding sockets are housed in a running water channel formed by the body unit and the pair of cap units.   The running water sterilizer according to claim 1, wherein the body unit and the pair of cap units are integrated by screwing screw portions provided to each of the body unit and the pair of cap units.

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