JPH0227914Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contamination prevention device at the end of a flow path that includes a shower or faucet that discharges sterile water.

Conventionally, so-called sterilized water used for washing hands during surgery, cleaning medical instruments, etc. is produced by flowing untreated water such as tap water around an ultraviolet germicidal lamp in a treatment device and irradiating it with ultraviolet rays with a wavelength of 254 nm, for example. Water is discharged from a shower spout or faucet (hereinafter referred to as a faucet) while being sequentially sterilized.

In the above example, as long as water continues to be sprayed, the inner surface and tip of the faucet are also cleaned, so there is almost no problem, but once water is stopped, the sterilized water inside the faucet is replaced with air, and that air At the same time, there was a drawback that bacteria could enter and adhere to the inside of the faucet, contaminating the faucet.

To avoid this, it is known to install a separate ultraviolet germicidal lamp that constantly irradiates the inner surface of the faucet, but in this example, multiple germicidal lamps are used, which makes the device complicated and expensive. The disadvantage was that it was not possible to prevent contamination of the tip end, especially the outer circumferential surface.

In view of this, the present invention is designed to simultaneously sterilize the water in the end of the flow path and the inner and outer surfaces of the faucet using a common ultraviolet germicidal lamp.

Hereinafter, the present invention will be described in detail with reference to the drawings. Fig. 1 shows the whole of one embodiment of the present invention, and Fig. 2 shows its main parts. In the figure, 1 is a U-shaped ultraviolet germicidal lamp, and below it is connected to a faucet 2 and its side wall 2a. A terminal straight tube 3 is arranged. The side wall 2a of the faucet is made of stainless steel, and the lid plate 2
b. The shower plate 2c and the straight pipe 3 having a large number of small-diameter through holes are made of fluorine resin that transmits ultraviolet rays,
These are watertightly joined to the side walls. The germicidal lamp, the faucet, and the end straight pipe are surrounded by a jacket 4 of suitable material and shape, and are connected to an external power source or water supply pipe via a ballast 5 or a solenoid valve 6, respectively. Reference numeral 7 denotes a housing box for these ballasts, etc., and a fluorescent lamp 8 and a mirror 9 are attached to the front.

In addition, in order to increase the irradiation efficiency of the germicidal lamp, the outer cover 4
The inner surface of the outer cover 4 is an ultraviolet reflecting mirror, and the upper part of the outer cover 4 can be opened and closed for purposes such as inspecting the germicidal lamp.

To explain the operation of the device of the present invention, the ultraviolet germicidal lamp 1 is always on, and since the lid plate 2 facing the germicidal lamp 1, the shower plate 2c, and the straight end pipe 3 are transparent to ultraviolet rays, the faucet 2 In addition, the inside of the straight end pipe 3 is constantly irradiated with ultraviolet rays from the germicidal lamp 1, and the inside and outside surfaces of the shower plate 2c are constantly irradiated with the ultraviolet rays that have passed through the inside of the faucet 2, so that they are not contaminated with bacteria. It never happens.

When the solenoid valve 6 is opened under the control of a foot switch or a photoelectric proximity switch (both not shown), water flows into the straight end pipe 3 through it.
While flowing through the straight pipe 3 and faucet 2, it is irradiated with ultraviolet rays from the germicidal lamp 1 to be sterilized, and flows out through a large number of small-diameter through holes in the shower plate 2c to be used for the above-mentioned hand washing and the like. When the solenoid valve 6 is closed after washing hands, etc., air replaced with sterile water enters the inside of the faucet 2, but the faucet 2 is not contaminated with bacteria as in the case before the solenoid valve is opened.

It goes without saying that the faucet side wall 2a may be made of synthetic resin and may be transparent to ultraviolet rays.

FIG. 3 shows another embodiment of the present invention, which is similar to the previous embodiment except that the germicidal lamp 1 is provided above and in front of the conical faucet 2 that is transparent to ultraviolet light.

In addition, in common with the above embodiments, in order to lengthen the ultraviolet irradiation flow path, the straight end pipe 3 may be replaced with a bent pipe or a threaded pipe, and may be arranged below or surrounding the sterilizing lamp. . Furthermore, if a precision filter or the like is added to the flow path of the water to be treated, dead bacteria will not be mixed into the sterilized water.

As detailed above, in the present invention, the faucet at the end of the flow path and the bottom plate having a large number of small-diameter through holes are arranged below the ultraviolet germicidal lamp that is always on, and the bottom plate Since at least the part of the faucet facing the UV germicidal lamp is made of UV-transparent material, a common UV germicidal lamp can simultaneously prevent contamination of the water in the end of the flow path and both the inside and outside of the bottom plate of the faucet. be able to.

[Brief explanation of the drawing]

1 to 3 are schematic diagrams of embodiments of the present invention. 1 is an ultraviolet germicidal lamp, 2 is a faucet, 2c is a shower board, and 5 is a ballast.

Claims (1)

[Scope of Claim for Utility Model Registration] In a fluid end contamination prevention device having an ultraviolet germicidal lamp and a flow path end portion to which ultraviolet light from the ultraviolet germicidal lamp is externally irradiated, The faucet is disposed below the germicidal lamp and has an ultraviolet-transparent bottom plate with a large number of small diameter holes, and at least the part of the faucet facing the ultraviolet germicidal lamp is made of an ultraviolet-transparent material. A fluid end contamination prevention device characterized in that the ultraviolet rays that have passed through the interior of the faucet are constantly irradiated onto the inner and outer surfaces of the bottom plate.