JP5353690B2 - UV sterilizer - Google Patents

Description

  The present invention relates to an ultraviolet sterilization apparatus that performs sterilization by irradiating an object to be sterilized with ultraviolet rays.

In recent years, an ultraviolet sterilizer has been known as a device for sterilizing liquid as food raw water, industrial water, or air. In general, an ultraviolet sterilizer is configured by storing an ultraviolet lamp that radiates ultraviolet rays in a cylindrical processing tank, and introduces an object to be sterilized such as water or air into the processing tank and moves the inside of the processing tank. However, the object to be sterilized is sterilized by irradiating it with ultraviolet rays and led out to the outside. In this type of UV sterilizer, in order to maintain a predetermined sterilization capability, it is necessary to replace the UV lamp whose performance has deteriorated due to deterioration over time with a new one. A light sensor such as the above is fixed, and the light sensor detects a decrease in illuminance of the ultraviolet lamp. At this time, if dirt adheres to the surface of the light-transmitting window, there is a problem that the ultraviolet output of the ultraviolet lamp cannot be accurately detected, and the deterioration of the sterilizing ability cannot be determined.
Therefore, in the conventional ultraviolet sterilizer, a drive mechanism for driving the shaft is disposed outside the treatment tank, and the shaft is passed through a through hole formed in the light transmission window via a waterproof packing or the like. A cleaning brush arranged so as to be in contact with the surface of the light window is fixed, and the surface of the light transmission window is wiped and cleaned by rotating the shaft (see, for example, Patent Document 1).

JP 2009-22591 A

However, the above-described conventional configuration requires a complicated drive mechanism for driving the shaft, a driving force supply source thereof, and maintenance for maintaining the waterproof performance of the shaft penetrating portion. In addition, if the cleaning brush does not cause shadows of ultraviolet rays, the surface of the transparent window needs to be disposed at a position recessed from the inner peripheral surface of the treatment tank. There was a risk that dirt would easily adhere to the surface of the transparent window.
Accordingly, an object of the present invention is to provide an ultraviolet sterilizer that can solve the above-described problems of the prior art, clean the surface of the transparent window with a simple configuration, and accurately detect the ultraviolet output of the ultraviolet lamp. It is to provide.

In order to achieve the above object, the present invention introduces an object to be sterilized into a treatment tank in which an ultraviolet lamp is inserted, irradiates the object to be sterilized with ultraviolet rays emitted from the ultraviolet lamp, and In the ultraviolet sterilizer provided with a light transmission window on the wall of the treatment tank, disposing a light sensor close to the light transmission window from the outside of the treatment tank, and detecting the ultraviolet light output of the ultraviolet lamp by the light sensor, A movable body that moves along the wall surface is disposed in the treatment tank, and the movable body includes a wiping body that wipes the surface of the light transmissive window facing the inside of the treatment tank. The surface can be cleaned, the surface of the translucent window on the side facing the processing tank is protruded from the inner surface of the processing tank to the front end side of the wiping body, and the front end of the wiping body is A position inside the inner surface, and a surface of the transparent window Characterized by being arranged to be contactable located.

The present invention provides a protective tube with an ultraviolet lamp inserted in a treatment tank, introduces a sterilization object into the treatment tank, and irradiates the sterilization object with ultraviolet rays emitted from the ultraviolet lamp through the protection tube. Sterilize and provide a light transmission window on the side surface of the treatment tank, and arrange an optical sensor close to the light transmission window from the outside of the treatment tank, and detect the ultraviolet light output of the ultraviolet lamp by the light sensor. In the ultraviolet sterilization apparatus, a cleaning plate that reciprocates along the protection tube and cleans the surface of the protection tube, and a drive body that drives the cleaning plate, the drive body or the cleaning plate, comprising a wiping member for wiping the surface of the transparent window on the side facing the inside of the processing tank, and drives the wiping member by said drive member, to clean the surface of the transparent window, in the processing bath The surface of the translucent window on the side to be projected protrudes from the inner surface of the processing tank to the front end side of the wiping body, and the front end of the wiping body is located at a position inside the inner surface of the processing tank and the translucent surface. It arrange | positions in the position which can contact the surface of a window, It is characterized by the above-mentioned.
The said structure WHEREIN: The said wiping body may be rotatably fixed so that the attachment arrangement | positioning of the surface of the said translucent window may be followed.

The present invention introduces an object to be sterilized into a treatment tank in which an ultraviolet lamp is inserted, irradiates the object to be sterilized with ultraviolet rays emitted from the ultraviolet lamp, and sterilizes the transparent tank on the wall of the treatment tank. In the ultraviolet sterilization apparatus in which an optical sensor is disposed in proximity to the light transmission window from the outside of the processing tank, and the ultraviolet output of the ultraviolet lamp is detected by the optical sensor, along the wall surface in the processing tank A movable body is provided, and the movable body is provided with a wiping body for wiping the surface of the translucent window on the side facing the processing tank, the surface of the translucent window can be cleaned, and the wiping is performed. The body is rotatably fixed so as to follow the mounting arrangement of the surface of the transparent window.
The present invention provides a protective tube with an ultraviolet lamp inserted in a treatment tank, introduces a sterilization object into the treatment tank, and irradiates the sterilization object with ultraviolet rays emitted from the ultraviolet lamp through the protection tube. Sterilize and provide a light transmission window on the side surface of the treatment tank, and arrange an optical sensor close to the light transmission window from the outside of the treatment tank, and detect the ultraviolet light output of the ultraviolet lamp by the light sensor. In the ultraviolet sterilization apparatus, a cleaning plate that reciprocates along the protection tube and cleans the surface of the protection tube, and a drive body that drives the cleaning plate, the drive body or the cleaning plate, A wiping body for wiping the surface of the translucent window on the side facing the processing tank, the wiping body is driven by the driving body, and the surface of the translucent window is cleaned; Characterized in that it is rotatably fixed so as to follow the mounting arrangement of the surface of the transparent window.
The said structure WHEREIN: You may make the surface of the said translucent window of the side facing in the said processing tank project from the inner surface of the said processing tank.

  According to the present invention, a movable body that moves along the wall surface is disposed in the treatment tank, and the movable body is provided with a wiping body that wipes the surface of the transparent window on the side facing the treatment tank. Therefore, the surface of the transparent window can be cleaned and kept clean with a simple configuration, and the ultraviolet output of the ultraviolet lamp can be accurately detected by the optical sensor.

It is a schematic diagram which shows the cross section of the running water sterilizer which concerns on embodiment of this invention. It is a figure which shows the II-II cross section of FIG. It is a figure which expands and shows the observation window cleaning mechanism of FIG.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, as one aspect of the ultraviolet sterilization apparatus according to the present invention, a water purification plant is used to sterilize (disinfect) water after water purification treatment as an object to be sterilized, and inactivate chlorine-resistant pathogenic microorganisms. A flowing water sterilization apparatus will be described.
FIG. 1 is a schematic view showing a cross section of the running water sterilizer according to the present embodiment, and FIG. 2 is a view showing a II-II cross section of FIG.

As shown in these drawings, the flowing water sterilizer 1 includes a cylindrical treatment tank 2 constituting a casing, and a plurality of (three in the present embodiment) ultraviolet lamps provided in the treatment tank 2. And a body 3.
The processing tank 2 is made of, for example, stainless steel, and upper and lower openings thereof are closed by flanges 4 and 5. An introduction port 6 for introducing water is disposed below the outer surface of the treatment tank 2, and a lead-out port 7 for deriving sterilized water is disposed above the outer surface. From the introduction port 6, the water before sterilization is introduced into the treatment tank 2 while maintaining a predetermined flow rate (or flow pressure), and moves in the treatment tank 2 toward the upper outlet port 7 by the flow pressure. Then, the water is sterilized by being irradiated with ultraviolet rays from the ultraviolet lamp body 3 while moving in the treatment tank 2, and discharged from the outlet port 7 to the outside.

Each of the ultraviolet lamp bodies 3 has a straight tubular ultraviolet lamp 8 and a lamp sleeve (protective tube) 9 as an ultraviolet transmissive cylindrical tube made of, for example, quartz, on which the ultraviolet lamp 8 is mounted. .
Each of the lamp sleeves 9 extends in parallel with the central axis C of the processing tank 2 and is provided so as to pass through the upper and lower flanges 4 and 5. Both ends of the lamp sleeve 9 are opened, and air flows into the lamp sleeve 9. Is secured to prevent condensation.
FIG. 1 schematically shows a longitudinal section including the central axis C of the treatment tank 2 and the central axis C ′ of the lamp sleeve 9 to which the ultraviolet lamp 8 is mounted.

The lamp sleeve 9 has an upper end fixed to a support 10 provided on the flange 5 and a lower end supported on a support 11 provided on the flange 4 so that the lamp sleeve 9 can withstand the fluid pressure in the processing tank 2. Retained.
The ultraviolet lamp 8 is configured to have a length that extends from the introduction port 6 to the outlet port 7 when mounted on the lamp sleeve 9. Ultraviolet rays are irradiated over the entire range of the flow path leading to 7.

As shown in FIG. 2, the three ultraviolet lamp bodies 3 are arranged at equal intervals along the circumference of a concentric circle having a radius Ra from the central axis C of the processing tank 2, and are adjacent to each other when viewed from the central axis C. The angles formed by the two ultraviolet lamp bodies 3 are equal to 120 degrees (= 360 degrees / 3).
The radius Ra is a value smaller than the inner diameter R of the processing tank 2, whereby each ultraviolet lamp body 3 is a distance Rb (= R−Ra) from the inner peripheral surface (inner surface, wall surface) 2 </ b> A of the processing tank 2. Only spaced apart.
Further, the number of the ultraviolet lamp bodies 3 is not limited to three, and N (N ≦ 3, a natural number) ultraviolet lamp bodies 3 may be provided in the processing tank 2. However, also in this configuration, each of the N ultraviolet lamp bodies 3 is arranged at equal intervals along the circumference of a concentric circle having a radius Ra from the central axis C of the processing tank 2, and adjacent to the central axis C. The angles formed by the two ultraviolet lamp bodies 3 are equal to each other (360 degrees / N).

  The sterilization ability of the running water sterilizer 1 depends on the output of ultraviolet rays (total amount of ultraviolet rays) of each ultraviolet lamp body 3, and dirt such as scale adheres to the surface of the lamp sleeve 9 containing the ultraviolet lamp 8. When the transmittance of 9 is lowered or the performance of the ultraviolet lamp 8 is lowered along with the deterioration with time, the output of ultraviolet rays is lowered, and thereby the sterilizing ability is also lowered.

  Therefore, in the present embodiment, the running water sterilizer 1 includes a lamp sleeve cleaning mechanism 20 that cleans the surface of the lamp sleeve 9 and an ultraviolet detection unit 40 that detects ultraviolet rays. Then, the lamp sleeve cleaning mechanism 20 periodically cleans the surface of the lamp sleeve 9 to prevent a decrease in the transmittance of the lamp sleeve 9, and the ultraviolet ray detection unit 40 constantly monitors the output of ultraviolet rays. Thus, it is possible to promptly detect a decrease in sterilization ability due to a decrease in performance of the ultraviolet lamp 8 or the like.

The configuration of the lamp sleeve cleaning mechanism 20 will be described in detail. An annular cleaning blade 21 is fitted into each lamp sleeve 9, and each cleaning blade 21 is supported by a cleaning blade support 22.
On the central axis C of the processing tank 2, a ball screw (driving body) 23 penetrating the processing tank 2 is disposed. A ball screw nut 24 is screwed into the ball screw 23. A cleaning plate 32 as a moving body is connected to the main body. The cleaning blade support 22 is supported on the cleaning plate 32.

Further, in the processing tank 2, three guide shafts 29 extending vertically are arranged around the central axis C at equal intervals, and the cleaning plate is attached to the shaft guide 30 that moves along these guide shafts 29. 32 are connected.
Further, a drive motor 26 is disposed above and outside the processing tank 2 by being supported by a motor support portion 25 disposed on the flange 5, and an output shaft 26 </ b> A of the drive motor 26 and an upper end portion of the ball screw 23. Are connected by a rotational force transmission mechanism 27. The drive motor 26 may be a waterproof motor if necessary.

  Under the above configuration, when the ball screw 23 is rotationally driven by the drive motor 26, the cleaning plate 32 connected to the ball screw 23 by the ball screw nut 24 moves up and down along the guide shaft 29 in the processing tank 2. Moving. As the cleaning plate 32 moves, the cleaning blades 21 wipe the outer peripheral surface of the lamp sleeve 9 so that the lamp sleeve 9 is cleaned.

  The ball screw 23 is made of, for example, stainless steel, and the ball screw nut 24 is made of, for example, a synthetic resin such as polyethylene terephthalate (PET). At this time, a stainless steel cover (not shown) for preventing the surface of the ball screw nut 24 from being exposed to ultraviolet rays is used to prevent the ball screw nut 24 from being deteriorated by ultraviolet rays emitted from the ultraviolet lamp body 3. Attached to the nut 24.

The cleaning plate 32 stays at a position near the bottom of the processing tank 2 and at least lower than the introduction port 6 so as not to cause a shadow of ultraviolet rays during normal (non-cleaning) time.
When the lamp sleeve 9 is cleaned, the cleaning plate 32 is reciprocated up and down in the processing tank 2 with the upper point of the outlet port 7 as a turning point as the drive motor 26 is driven. With this reciprocation, the cleaning blade 21 wipes the outer peripheral surface of the lamp sleeve 9, whereby the lamp sleeve 9 is cleaned and the output of ultraviolet rays is prevented from being lowered due to contamination of the lamp sleeve 9.

Next, the configuration of the ultraviolet detection unit 40 will be described in detail.
In the present embodiment, there are three ultraviolet detection units 40 as many as the number of the ultraviolet lamp bodies 3, and each of the ultraviolet detection units 40 has various characteristics such as spectral characteristics, angular characteristics, and input / output characteristics. (The same specification thing) is used, and each ultraviolet detection unit 40 is arranged at substantially equal intervals along the peripheral direction of inner peripheral surface 2A of processing tub 2.
In the present embodiment, the ultraviolet detection units 40 are arranged at positions facing the ultraviolet lamp body 3, but if the ultraviolet detection units 40 are arranged at equal intervals, the ultraviolet detection units 40 are arranged. It is not necessary to dispose each of them in opposition to the ultraviolet lamp body 3. This will be described in detail later.

FIG. 3 is an enlarged view of the ultraviolet detection unit 40 shown in FIG.
A flange 36 having an observation hole 35 is provided on the wall surface of the processing tank 2, and the ultraviolet detection unit 40 is attached to the flange 36.
The ultraviolet detection unit 40 is a translucent window formed of an ultraviolet transparent material (for example, quartz glass) that is pressed against the observation hole 35 of the flange 36 with an O-ring 37 interposed therebetween to close the observation hole 35. An observation window 41, a pressing metal 42 that presses and fixes the observation window 41 to the flange 36, a protective sheet 43 that is interposed between the pressing metal 42 and the observation window 41 and protects the observation window 41, and the processing tank 2. And an ultraviolet sensor unit (light sensor) 44 that detects ultraviolet rays that are disposed close to the observation window 41 from the outside and pass through the observation window 41.
And the ultraviolet-ray which permeate | transmits the observation window 41 by each ultraviolet-ray detection unit 40 is measured, and the fluctuation | variation is monitored, The fall of the disinfection ability resulting from the performance fall of the ultraviolet lamp 8 etc. is detected rapidly.

The observation window 41 is arranged such that the surface 41A on the side facing the inside of the processing tank 2 protrudes toward the central axis C side from the inner peripheral surface 2A of the processing tank 2. More specifically, the surface 41A of the observation window 41 is formed in a planar shape parallel to the central axis C, and its central portion protrudes from the inner peripheral surface 2A of the processing tank 2 by the protruding amount δ toward the central axis C. Yes.
Here, the surface 41A of the observation window 41 exposed to the inside of the processing tank 2 is easily contaminated similarly to the lamp sleeve 9, and when the surface 41A of the observation window 41 is contaminated, the deterioration of the performance of the ultraviolet lamp 8 is accurately detected. Can not do it. Therefore, in the present embodiment, the lamp sleeve cleaning mechanism 20 is further provided with an observation window cleaning mechanism 50 for cleaning the surface 41A of the observation window 41.

The observation window cleaning mechanism 50 is a thin plate-like cleaning blade 51 as a wiping body for wiping the surface 41 A of the observation window 41, a cleaning support 52 that connects the cleaning blade 51 to the cleaning plate 32, and cleaning with the cleaning support 52. And a fixing plate 53 for fixing the blade 51.
The cleaning blade 51 is formed of an elastic member such as a fluororesin rubber, and its tip 51A extends substantially linearly in plan view. The tip 51 </ b> A of the cleaning blade 51 does not contact the inner peripheral surface 2 </ b> A of the processing tank 2, but the entire tip 51 </ b> A is disposed at a position where it can contact the surface 41 </ b> A of the observation window 41. In the present embodiment, for example, the distance L from the central axis C of the processing tank 2 to the central portion of the tip 51A is smaller than the inner diameter R of the processing tank 2, and the central portion of the surface 41A of the observation window 41 from the central axis C. It is a value larger than the distance La (= R−δ).

The cleaning blade 51 is fixed between the cleaning support 52 and the fixed plate 53 by screws 53A.
The cleaning support 52 is fixed to the cleaning plate 32 by a screw 52A so as to be slightly rotatable.

  Since the cleaning blade 51 is provided on the cleaning plate 32, the cleaning blade 51 reciprocates up and down in the processing tank 2 together with the cleaning plate 32. Therefore, as shown in FIG. 1, the cleaning blade 51 is stopped at a position near the bottom of the processing tank 2 and at least lower than the introduction port 6 at normal time (when not cleaning), and the drive motor 26 is When driven, it reciprocates up and down in the treatment tank 2 and wipes the surface 41A of the observation window 41 with this reciprocation as shown in FIG.

  Here, since the cleaning support 52 is rotatably fixed to the cleaning plate 32, when a part of the cleaning blade 51 comes into contact with the flange 36 or the surface 41 </ b> A of the observation window 41, the cleaning blade 51 is moved to the observation window 41. The cleaning support 52 rotates about the screw 52A so as to follow the mounting arrangement of the surface 41A. Therefore, even if there is a distortion or shift in the arrangement of the observation window 41 due to a manufacturing error or an assembly error, the entire tip 51A can be brought into contact with the mounting arrangement of the surface 41A of the observation window 41. The surface 41A can be wiped off reliably. Thereby, the observation window 41 is cleaned, and it becomes possible to detect the ultraviolet rays by the ultraviolet sensor unit 44 without being affected by the contamination of the observation window 41.

As described above, since the cleaning blade 51 is provided on the cleaning plate 32, it is not necessary to dispose the surface 41A of the observation window 41 at a position recessed from the inner peripheral surface 2A of the processing tank 2, so Water stagnation can be prevented, and as a result, adhesion of dirt to the surface 41A can be suppressed.
In the present embodiment, the surface 41A of the observation window 41 protrudes toward the central axis C from the inner peripheral surface 2A of the processing tank 2, and the tip 51A of the cleaning blade 51 is positioned closer to the central axis C than the inner peripheral surface 2A. Therefore, the cleaning blade 51 does not wipe the inner peripheral surface 2A, and wear of the inner peripheral surface 2A and the cleaning blade 51 can be suppressed.

  Here, it is not necessary to clean the entire area of the observation window 41 with the cleaning blade 51, and it is sufficient to clean at least the area corresponding to the measurement range of the ultraviolet sensor unit 44. Therefore, as the cleaning blade 51, as shown in FIG. 2, a width W sufficient to cross the measurement range width A of the ultraviolet sensor unit 44 is sufficient.

In the present embodiment, since the three ultraviolet detection units 40 described above are provided and the three cleaning blades 51 are provided on one cleaning plate 32, the cleaning of the observation window 41 of each ultraviolet detection unit 40 is performed individually. Are not performed independently of each other, but are performed at substantially the same timing.
Thereby, it becomes possible to remove the error due to the contamination of the observation window 41 from the respective detection results of the ultraviolet detection unit 40, and the measurement conditions of each ultraviolet detection unit 40 can be made uniform. Furthermore, since the observation window 41 of each ultraviolet ray detection unit 40 can be cleaned at the same timing as the cleaning of the lamp sleeve 9 of the ultraviolet lamp body 3, ultraviolet rays can be measured more accurately.

  As described above, according to the present embodiment, the cleaning plate 32 that moves along the inner peripheral surface 2A is disposed in the processing tank 2, and the side facing the cleaning plate 32 facing the processing tank 2 is observed. Since the cleaning blade 51 for wiping the surface 41A of the window 41 is provided and the surface 41A of the observation window 41 can be cleaned, for example, the surface 41A of the observation window 41 is cleaned with a simple configuration without providing a through hole in the observation window 41. Thus, the ultraviolet output of the ultraviolet lamp 8 can be accurately detected by the ultraviolet sensor unit 44. Further, since the cleaning blade 51 is provided on the cleaning plate 32, it is not necessary to dispose the surface 41A of the observation window 41 at a position recessed from the inner peripheral surface 2A of the processing tank 2, so that it is possible to prevent stagnation of water near the surface 41A. As a result, adhesion of dirt to the surface 41A can be suppressed.

  Further, according to the present embodiment, the cleaning plate 32 includes the cleaning plate 32 that reciprocates along the lamp sleeve 9 and cleans the surface of the lamp sleeve 9 and the ball screw 23 that drives the cleaning plate 32. A cleaning blade 51 for wiping the surface 41A of the observation window 41 on the side facing the processing tank 2, and driving the cleaning blade 51 with the ball screw 23 to clean the surface 41A of the observation window 41. Without providing a separate mechanism for driving the cleaning blade 51, the surface 41A of the observation window 41 can be cleaned and kept clean with a simple configuration, and the ultraviolet output of the ultraviolet lamp 8 can be accurately detected by the ultraviolet sensor unit 44. it can.

  In addition, according to the present embodiment, since the surface 41A of the observation window 41 on the side facing the processing tank 2 is protruded from the inner peripheral surface 2A of the processing tank 2, the cleaning blade 51 wipes the inner peripheral surface 2A. Thus, only the surface 41A can be wiped off, and wear of the inner peripheral surface 2A and the cleaning blade 51 can be suppressed.

  In addition, according to the present embodiment, the cleaning blade 51 is rotatably fixed so as to follow the mounting arrangement of the surface 41A of the observation window 41, so that even if there is a manufacturing error or an assembly error, the cleaning blade 51 Since the tip 51A can be disposed substantially parallel to the surface 41A of the observation window 41 and the entire tip 51A can be brought into contact with the surface 41A of the observation window 41, the surface 41A of the observation window 41 can be reliably cleaned.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above embodiment, the cleaning blade 51 is fixed to the cleaning plate 32, but may be fixed to another moving body that moves on the ball screw 23. Further, an actuator or the like may be provided separately, and the cleaning blade 51 may be fixed to a moving body that is driven by the actuator or the like and moves in the direction of the central axis C of the processing tank 2.

In the above embodiment, three ultraviolet lamp bodies 3 are provided. However, the number of the ultraviolet lamp bodies 3 is not limited to three as long as they are arranged around the central axis C at equal intervals. In this case, it is possible to accurately detect the output of ultraviolet rays by arranging the same number of ultraviolet ray detection units 40 as the number of the ultraviolet ray lamp bodies 3 around the group of ultraviolet lamp bodies 3 at equal intervals. In particular, when the number of the ultraviolet lamp bodies 3 is N (N ≧ 3), the number of the ultraviolet detection units 40 is three, or a factor having a value of 3 or more among the factors of N is the number of the ultraviolet detection units 40. If it is the number, the output of ultraviolet rays can be measured with sufficient accuracy.
Further, one ultraviolet lamp body 3 may be arranged on the central axis C. In this case, the ball screw 23 is arranged around the central axis C in parallel with the central axis C.

Moreover, in the said embodiment, although the processing tank 2 was formed in the cylindrical shape, the processing tank 2 may be a polygonal column shape and may be indefinite shape. Furthermore, the treatment tank 2 may be curved to form a curved pipe.
Moreover, in the said embodiment, although the running water sterilization apparatus whose sterilization target object is water was illustrated as an example of an ultraviolet sterilization apparatus, it is not restricted to this, An ultraviolet lamp is installed in a processing tank, and this sterilization target object is processed by this process. The present invention can be applied to any device as long as it is moved in the tank and is an ultraviolet sterilizer. Moreover, the sterilization target can be applied to all fluids, and examples thereof include liquids such as water and gases such as air.

1 Running water sterilizer (UV sterilizer)
2 Treatment tank 2A Inner peripheral surface (inner surface, wall surface)
3 UV lamp body 8 UV lamp 9 Lamp sleeve (protection tube)
23 Ball screw (Driver)
32 Cleaning plate (moving body)
41 Observation window (translucent window)
41A Surface 44 UV sensor unit (light sensor)
51 Cleaning blade (wiping body)
C Center axis

Claims (6)

Introducing an object to be sterilized into a treatment tank into which an ultraviolet lamp is inserted, irradiating the object to be sterilized with ultraviolet rays emitted from the ultraviolet lamp, and providing a translucent window on the wall of the treatment tank, In the ultraviolet sterilizer for disposing an optical sensor close to the transparent window from the outside of the processing tank and detecting the ultraviolet output of the ultraviolet lamp by the optical sensor,
A movable body that moves along the wall surface is disposed in the treatment tank, and the movable body includes a wiping body that wipes a surface of the light-transmissive window facing the inside of the treatment tank, and the light-transmissive window the surface of the possible cleaning,
The surface of the translucent window on the side facing the processing tank is projected from the inner surface of the processing tank to the tip side of the wiping body,
The ultraviolet sterilizer characterized by arrange | positioning the front-end | tip of the said wiping body in the position inside the inner surface of the said processing tank, and the position which can contact the surface of the said translucent window . A protective tube into which a UV lamp is inserted is provided in the processing tank, the object to be sterilized is introduced into the processing tank, and the UV light emitted from the UV lamp is irradiated to the object to be sterilized through the protective tube for sterilization. In addition, an ultraviolet sterilizer that provides a light transmission window on a side surface of the treatment tank, disposes a light sensor in proximity to the light transmission window from the outside of the treatment tank, and detects the ultraviolet light output of the ultraviolet lamp by the light sensor. In
A cleaning plate that reciprocates along the protective tube and cleans the surface of the protective tube, and a driving body that drives the cleaning plate, and faces the driving body or the cleaning plate inside the processing tank. A wiping body for wiping the surface of the translucent window on the side, driving the wiping body by the driving body, and cleaning the surface of the translucent window ;
The surface of the translucent window on the side facing the processing tank is projected from the inner surface of the processing tank to the tip side of the wiping body,
The ultraviolet sterilizer characterized by arrange | positioning the front-end | tip of the said wiping body in the position inside the inner surface of the said processing tank, and the position which can contact the surface of the said translucent window . The ultraviolet sterilizer according to claim 1 or 2 , wherein the wiping body is rotatably fixed so as to follow the mounting arrangement of the surface of the translucent window.   Introducing an object to be sterilized into a treatment tank into which an ultraviolet lamp is inserted, irradiating the object to be sterilized with ultraviolet rays emitted from the ultraviolet lamp, and providing a translucent window on the wall of the treatment tank, In the ultraviolet sterilizer for disposing an optical sensor close to the transparent window from the outside of the processing tank and detecting the ultraviolet output of the ultraviolet lamp by the optical sensor,
  A movable body that moves along the wall surface is disposed in the treatment tank, and the movable body includes a wiping body that wipes a surface of the light-transmissive window facing the inside of the treatment tank, and the light-transmissive window Can clean the surface of
  The ultraviolet sterilizer characterized in that the wiping body is rotatably fixed so as to follow the mounting arrangement of the surface of the transparent window.   A protective tube into which a UV lamp is inserted is provided in the processing tank, the object to be sterilized is introduced into the processing tank, and the UV light emitted from the UV lamp is irradiated to the object to be sterilized through the protective tube for sterilization. In addition, an ultraviolet sterilizer that provides a light transmission window on a side surface of the treatment tank, disposes a light sensor in proximity to the light transmission window from the outside of the treatment tank, and detects the ultraviolet light output of the ultraviolet lamp by the light sensor. In
  A cleaning plate that reciprocates along the protective tube and cleans the surface of the protective tube, and a driving body that drives the cleaning plate, and faces the driving body or the cleaning plate inside the processing tank. A wiping body for wiping the surface of the translucent window on the side, driving the wiping body by the driving body, and cleaning the surface of the translucent window;
  The ultraviolet sterilizer characterized in that the wiping body is rotatably fixed so as to follow the mounting arrangement of the surface of the transparent window. The ultraviolet sterilizer according to claim 4 or 5 , wherein a surface of the translucent window facing the inside of the processing tank is protruded from an inner surface of the processing tank.

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