CN117470367A - Dose testing method for overcurrent type ultraviolet sterilizer - Google Patents
Dose testing method for overcurrent type ultraviolet sterilizer Download PDFInfo
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- CN117470367A CN117470367A CN202311448798.1A CN202311448798A CN117470367A CN 117470367 A CN117470367 A CN 117470367A CN 202311448798 A CN202311448798 A CN 202311448798A CN 117470367 A CN117470367 A CN 117470367A
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- Prior art keywords
- ultraviolet
- light intensity
- intensity sensor
- sleeve
- cavity
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- 238000012360 testing method Methods 0.000 title claims abstract description 12
- 238000005286 illumination Methods 0.000 claims abstract description 23
- 238000001228 spectrum Methods 0.000 claims abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention relates to a dosage testing method for an overcurrent ultraviolet sterilizer, which comprises the following steps: an ultraviolet lamp for emitting ultraviolet rays of a specific spectrum; a sleeve for receiving and protecting the ultraviolet lamp; a chamber having a chamber for accommodating the sleeve and flowing a medium to be sterilized therethrough to sterilize the medium to be sterilized by ultraviolet rays emitted from the ultraviolet lamp; the first light intensity sensor and the second light intensity sensor are arranged in the cavity at intervals and perpendicular to the sleeve, and the vertical distance from the first light intensity sensor to the ultraviolet lamp is smaller than the vertical distance from the second light intensity sensor to the ultraviolet lamp; the ultraviolet illumination intensity in the reaction chamber can be determined by the measured values of the first illumination sensor and the second illumination sensor, so that the ultraviolet dose received in the chamber can be more simply and specifically quantified.
Description
Technical Field
The invention relates to the technical field of ultraviolet sterilization, in particular to a dosage testing method for an overcurrent ultraviolet sterilizer.
Background
Ultraviolet sterilization is widely used as a green and safe sterilization mode. The principle is that the ultraviolet rays emitted by the ultraviolet lamp tube destroy the DNA of microorganism cells such as virus and bacteria, and the like, so that the microorganism cells die immediately or lose reproductive capacity, thereby achieving the aim of disinfection and sterilization. The ultraviolet dose can directly influence the overall disinfection effect of the sterilizer, and the ultraviolet light intensity distribution in the reaction chamber is uneven, so that the ultraviolet dose cannot be directly measured, and visual evaluation basis is lacked in the design of the ultraviolet sterilizer. Finally, the performance of the sterilizer is uneven, the sterilization requirement cannot be met due to insufficient ultraviolet dose, and the energy consumption is wasted due to excessive ultraviolet dose.
Disclosure of Invention
The present invention is directed to a method for testing dosage of an over-current ultraviolet sterilizer, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for dose testing an over-current uv sterilizer, the uv sterilizer comprising: an ultraviolet lamp for emitting ultraviolet rays of a specific spectrum; a sleeve for receiving and protecting the ultraviolet lamp; a chamber having a chamber for accommodating the sleeve and flowing a medium to be sterilized therethrough to sterilize the medium to be sterilized by ultraviolet rays emitted from the ultraviolet lamp; the first light intensity sensor and the second light intensity sensor are arranged in the cavity at intervals and perpendicular to the sleeve, the vertical distance from the first light intensity sensor to the ultraviolet lamp is smaller than the vertical distance from the second light intensity sensor to the ultraviolet lamp, and the height difference between the first light intensity sensor and the second light intensity sensor is 1cm; the connecting line of the central point on the outer wall of the cavity after the first light intensity sensor and the second light intensity sensor are installed is parallel to the inner sleeve of the cavity;
average UV dose D to the medium in the effective illumination area between the inner wall of the cavity and the outer surface of the sleeve d Calculated from the following formula (1):
D d ＝I d ×t (1)
in formula (1), t represents an ultraviolet irradiation time in seconds, I d Represents the average intensity of ultraviolet illumination received at any cross section of the medium in the effective illumination area, and t and I d Each calculated by the following formulas (2) and (3):
I d ＝(I 1 +I 2 )/2 (2)
t＝L/v (3)
in formula (3), L represents the effective length of the ultraviolet lamp in meters, v represents the flow rate of the medium to be sterilized through the ultraviolet sterilizer in m/s, and v is calculated by the following formula (4):
v＝Q/S (4)
in the formula (4), Q is the flow rate in the ultraviolet sterilizer, and the unit is m 3 S is the cross section area of the effective sterilization area of the ultraviolet sterilizer, and the unit is m 2 And S is calculated by the following formula (5):
S＝π*r 1 2-(πr 2 2*n 3 ) (5)
in formula (5), r 1 The unit is meter and r is the inner diameter radius of the cavity 2 Is the radius of the outer diameter of the sleeve, the unit is meter, n 3 The number of the sleeves is the number of the sleeves;
in formula (2), I 1 Indicating the illumination intensity of the outer surface of the sleeve, I 2 Represents the illumination intensity of the inner wall of the cavity, and I 1 And I 2 Each calculated by the following formulas (6) and (7):
in the formulas (6) and (7), T represents the transmittance of ultraviolet rays in a medium of 1cm, n 1 Representing the distance from the outer surface of the sleeve to the first light intensity sensor in cm; n is n 2 Representing the distance of the second light intensity sensor tip to the inner wall of the cavity in cm, and T is calculated by the following formula (8):
T＝I 4 /I 3 (8)
further, the center distance interval range between the first light intensity sensor and the second light intensity sensor is as follows: 32mm-100mm.
Further, the wavelength of ultraviolet rays emitted by the ultraviolet lamp is 254nm.
Further, the medium to be disinfected is water.
According to the dosage testing method for the overcurrent ultraviolet sterilizer, the ultraviolet illumination intensity of the reaction cavity can be determined by the measured values of the first illumination sensor and the second illumination sensor, so that the ultraviolet dosage received in the cavity can be more simply and specifically quantified.
Drawings
FIG. 1 is a schematic view of the structure of an ultraviolet sterilizer in the method of the invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, a method for dose testing of an over-current ultraviolet sterilizer, the ultraviolet sterilizer comprising: an ultraviolet lamp 11 for emitting ultraviolet rays of a specific spectrum; a sleeve 12, the sleeve 12 being adapted to receive and protect the ultraviolet lamp 11; a chamber 13 having a chamber 14, the chamber 14 being for accommodating the sleeve 12 and flowing the medium 2 to be sterilized through the chamber 14 to ultraviolet sterilize the medium 2 to be sterilized by ultraviolet rays emitted from the ultraviolet lamp 11; a first light intensity sensor 15 and a second light intensity sensor 16, wherein the first light intensity sensor 15 and the second light intensity sensor 16 are arranged in the cavity at intervals and are perpendicular to the sleeve 12, the vertical distance from the first light intensity sensor 15 to the ultraviolet lamp 11 is smaller than the vertical distance from the second light intensity sensor 16 to the ultraviolet lamp 11, and the height difference between the first light intensity sensor 15 and the second light intensity sensor 16 is 1cm; the connecting line of the central point on the outer wall of the cavity after the first light intensity sensor and the second light intensity sensor are installed is parallel to the inner sleeve 12 of the cavity;
average UV dose D to the medium in the effective illumination area between the inner wall of the cavity and the outer surface of the sleeve d Calculated from the following formula (1):
D d ＝I d ×t (1)
in formula (1), t represents an ultraviolet irradiation time in seconds, I d Represents the average intensity of ultraviolet illumination received at any cross section of the medium in the effective illumination area, and t and I d Each calculated by the following formulas (2) and (3):
I d ＝(I 1 +I 2 )/2 (2)
t＝L/v (3)
in formula (3), L represents the effective length of the ultraviolet lamp in meters, v represents the flow rate of the substance to be sterilized through the ultraviolet sterilizer in m/s, and v is calculated by the following formula (4):
v＝Q/S (4)
in the formula (4), Q is the flow rate in the ultraviolet sterilizer, and the unit is m 3 S is the cross section area of the effective sterilization area of the ultraviolet sterilizer, and the unit is m 2 And S is calculated by the following formula (5):
S＝π*r 1 2-(πr 2 2*n 3 ) (5)
in formula (5), r 1 The unit is meter and r is the inner diameter radius of the cavity 2 Is the radius of the outer diameter of the sleeve, the unit is meter, n 3 The number of the sleeves is the number of the sleeves;
in formula (2), I 1 Indicating the illumination intensity of the outer surface of the sleeve, I 2 Indicating the illumination intensity of the inner wall of the cavity, I 3 Indicating the illumination intensity measured by the first light intensity sensor, I 4 Representing the illumination intensity measured by the second light intensity sensor, and I 1 And I 2 Each calculated by the following formulas (6) and (7):
in the formulas (6) and (7), T represents ultraviolet transmittance, n 1 Representing the distance from the outer surface of the sleeve to the first light intensity sensor in cm; n is n 2 Representing the distance of the second light intensity sensor tip to the inner wall of the cavity in cm, and T is calculated by the following formula (8):
T＝I 4 /I 3 (8)
the center distance interval range between the first light intensity sensor and the second light intensity sensor is as follows: 32mm-100mm. In this distance range, the detection influence of the height difference and the sensing angle of the two sensors can be eliminated, and the wavelength of ultraviolet rays emitted by the ultraviolet lamp is 254nm. The medium 2 to be disinfected is water.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (4)
1. A method for testing dosage of an overcurrent ultraviolet sterilizer is characterized in that,
the ultraviolet sterilizer includes:
an ultraviolet lamp for emitting ultraviolet rays of a specific spectrum;
a sleeve for receiving and protecting the ultraviolet lamp;
a chamber having a chamber for accommodating the sleeve and flowing a medium to be sterilized therethrough to sterilize the medium to be sterilized by ultraviolet rays emitted from the ultraviolet lamp;
the first light intensity sensor and the second light intensity sensor are arranged in the cavity at intervals and perpendicular to the sleeve, the vertical distance from the first light intensity sensor to the ultraviolet lamp is smaller than the vertical distance from the second light intensity sensor to the ultraviolet lamp, and the height difference between the first light intensity sensor and the second light intensity sensor is 1cm; the connecting line of the central point on the outer wall of the cavity after the first light intensity sensor and the second light intensity sensor are installed is parallel to the inner sleeve of the cavity;
average UV dose D to the medium in the effective illumination area between the inner wall of the cavity and the outer surface of the sleeve d Calculated from the following formula (1):
D d ＝I d ×t (1)
in formula (1), t represents an ultraviolet irradiation time in seconds, I d Represents the average intensity of ultraviolet illumination received at any cross section of the medium in the effective illumination area, and t and I d Each calculated by the following formulas (2) and (3):
I d ＝(I 1 +I 2 )/2 (2)
t＝L/v (3)
in formula (3), L represents the effective length of the ultraviolet lamp in meters, v represents the flow rate of the medium to be sterilized through the ultraviolet sterilizer in m/s, and v is calculated by the following formula (4):
v＝Q/S (4)
in the formula (4), Q is the flow rate in the ultraviolet sterilizer, and the unit is m 3 S is the cross section area of the effective sterilization area of the ultraviolet sterilizer, and the unit is m 2 And S is calculated by the following formula (5):
S＝π*r 1 2-(πr 2 2*n 3 ) (5)
in formula (5), r 1 The unit is meter and r is the inner diameter radius of the cavity 2 Is the radius of the outer diameter of the sleeve, the unit is meter, n 3 The number of the sleeves is the number of the sleeves;
in formula (2), I 1 Indicating the illumination intensity of the outer surface of the sleeve, I 2 Represents the illumination intensity of the inner wall of the cavity, and I 1 And I 2 Each calculated by the following formulas (6) and (7):
in the formulas (6) and (7), T represents the transmittance of ultraviolet rays in a medium of 1cm, n 1 Representing the distance from the outer surface of the sleeve to the first light intensity sensor in cm; n is n 2 Representing the distance of the second light intensity sensor tip to the inner wall of the cavity in cm, and T is calculated by the following formula (8):
T＝I 4 /I 3 (8)。
2. the method for dose testing of an over-current ultraviolet sterilizer of claim 1, wherein the center-to-center distance interval between the first light intensity sensor and the second light intensity sensor is: 32mm-100mm.
3. The method for dose testing of an over-current ultraviolet sterilizer of claim 2, wherein the ultraviolet light emitted from the ultraviolet lamp has a wavelength of 254nm.
4. A method for dose testing an over-flow uv sterilizer as claimed in claim 3, wherein the medium to be sterilized is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311448798.1A CN117470367A (en) | 2023-11-02 | 2023-11-02 | Dose testing method for overcurrent type ultraviolet sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311448798.1A CN117470367A (en) | 2023-11-02 | 2023-11-02 | Dose testing method for overcurrent type ultraviolet sterilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117470367A true CN117470367A (en) | 2024-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311448798.1A Pending CN117470367A (en) | 2023-11-02 | 2023-11-02 | Dose testing method for overcurrent type ultraviolet sterilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117470367A (en) |
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2023
- 2023-11-02 CN CN202311448798.1A patent/CN117470367A/en active Pending
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