AU2021102643A4 - A system for multi-directional disinfection of object and a method there of - Google Patents
A system for multi-directional disinfection of object and a method there of Download PDFInfo
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- AU2021102643A4 AU2021102643A4 AU2021102643A AU2021102643A AU2021102643A4 AU 2021102643 A4 AU2021102643 A4 AU 2021102643A4 AU 2021102643 A AU2021102643 A AU 2021102643A AU 2021102643 A AU2021102643 A AU 2021102643A AU 2021102643 A4 AU2021102643 A4 AU 2021102643A4
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- timer circuit
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- ultraviolet
- food items
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims description 16
- 235000013305 food Nutrition 0.000 claims abstract description 81
- 230000005855 radiation Effects 0.000 claims abstract description 39
- 230000000249 desinfective effect Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000001960 triggered effect Effects 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 description 12
- 230000008901 benefit Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 241000700605 Viruses Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 240000007651 Rubus glaucus Species 0.000 description 2
- 235000011034 Rubus glaucus Nutrition 0.000 description 2
- 235000009122 Rubus idaeus Nutrition 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000025721 COVID-19 Diseases 0.000 description 1
- 241001678559 COVID-19 virus Species 0.000 description 1
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
- 241000711573 Coronaviridae Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- A61L2/24—Apparatus using programmed or automatic operation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0057—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by 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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
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)
- Optics & Photonics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
A system for multi-directional disinfection of an object and food item,
comprises of an ultraviolet chamber 100 for disinfecting a plurality of
object and food items, an infrared sensor 102 for opening a door of
the ultraviolet chamber 100 for disinfection, at least two timer circuit
modules 104 for producing at least two delay signals of defined time
intervals, a plurality of UV lamp 104 for disinfection, wherein at least a
mode of disinfection is selected and radiation from UV lamp 104 is
exposed for a definite interval of time, a rotatory module 108 for
performing controlled rotation of the ultraviolet chamber 100 in
multiple direction, and a dose counter 110 comprising of a sensor and
a controller for measuring intensity of the UV radiation intending at a
certain angle and converted to a definite amount of dosage depending
on the object and food material.
26
100 106
ULTRAVIOLET
CHAMBER
102 108
INFRARED SENSOR ROTATORY MODULE
104
110
TIMER CIRCUIT
MODULE DOSE COUNTER
FIGURE 1
opening a door of the ultraviolet chamber using an infrared sensor for loading the objects and the
food items for disinfection 202
producing at least two delay signals of defined time intervals using at least two timer circuit modules
connected to a power source upon being triggered 204
disinfecting a plurality of objects and food items based on a first delay signal using a plurality of UV
lamp connected to a first timer circuit module, wherein at least a mode of disinfection is selected
based on the plurality of objects and food items and radiation from UV lamp is exposed for a definite 204a
interval of time based on the first delay signal
performing controlled rotation of the ultraviolet chamber in multiple direction using a rotatory
module connected to a second timer circuit module based on a second delay signal, wherein the 204b
rotatory module exposes the object and food items to the ultraviolet radiation for the definite
interval of time based on the second delay signal
measuring intensity of the UV radiation intending at a certain angle using a dose counter connected
to the ultraviolet chamber comprising of a sensor and a controller and converted to a definite
amount of dosage depending on the object and food material 206c
FIGURE 2
Description
100 106
ULTRAVIOLET CHAMBER 102 108
104 110 TIMER CIRCUIT MODULE DOSE COUNTER
FIGURE 1
opening a door of the ultraviolet chamber using an infrared sensor for loading the objects and the food items for disinfection 202 producing at least two delay signals of defined time intervals using at least two timer circuit modules connected to a power source upon being triggered 204
disinfecting a plurality of objects and food items based on a first delay signal using a plurality of UV lamp connected to a first timer circuit module, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp is exposed for a definite 204a interval of time based on the first delay signal
performing controlled rotation of the ultraviolet chamber in multiple direction using a rotatory module connected to a second timer circuit module based on a second delay signal, wherein the 204b rotatory module exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal
measuring intensity of the UV radiation intending at a certain angle using a dose counter connected to the ultraviolet chamber comprising of a sensor and a controller and converted to a definite amount of dosage depending on the object and food material 206c
FIGURE 2
The present invention generally relates to a field of disinfection systems. More particularly, the present invention relates to disinfecting a large group of objects/materials using radiations.
To slow down the spread of the COVID-19 virus, efficient disinfection methods and technology are on demand. There is a lot of chemicals such as Sodium hypochlorite, calcium hypochlorite hydrogen and peroxide are available for the disinfection purpose (World Health Organization, 2020). Still, it cannot be applicable to sanitize all daily used items (food, sensitive electronic devices. Then Ultraviolet Radiation (UVR) comes into the picture, which has a well-defined disinfection impact on virus and bacteria by feeding them the necessary dose to inactivate event the COVID-19.
Generally, optical radiation in the electromagnetic spectrum is consists of UVR, visible light and infrared radiation. The UVR is ranging between 100 and 400 nanometers (nm) in length. Further, the UVR can be classified into UVC, UVB, and UVA with the wavelength ranges of 200-280 nm, 280-315 nm, and 315-380 nm, respectively (WHO 1994). Among this UVR only UVC is used for disinfection purposes with the most robust antimicrobial/antiviral properties.
UVC has the potential to destroys the DNA of viruses, bacteria, and fungi. Recently various research has been conducted to determine the dose of UV radiation for the 90% reduction (D90%) of coronavirus also suggest that required treatment for D90% reduction varies between 7-2410 J/m2 and the average of all studies is 237 J/m2.
KR101702402B1 discloses about the liquid treatment apparatus of the present invention comprises a chamber having at least one internal surface and adapted for passage of fluid. The chamber is surrounded by at least 8 0 %. The apparatus also includes an optional ultraviolet transparent tube positioned within the chamber and adapted for passage of the fluid. The apparatus further comprises an ultraviolet lamp positioned within the chamber and optionally within the ultraviolet transparent tube. A reflective material is interposed between the chamber and the permeable tube. The reflective material reflects at least a portion of the light emitted by the ultraviolet lamp and is at least 80% reflective.
US4948980A discloses about apparatus is provided for irradiating liquid or gases by means of UV-light, consisting of a tubular body through which the medium to be irradiated flows, and at least two UV light sources with reflectors arranged externally to the tubular body and having parallel axes. The UV-light sources are flat radiators facing the tubular body with their narrow sides.
However, the existing technologies are not useful for disinfecting a large variety of items such as food materials by controlling the dosage of the disinfectant.
In order to overcome the above-mentioned limitations, there exists a need to develop a multi-directional disinfecting system that disinfects a large group of objects.
The technical advancements disclosed by the present invention overcomes the limitations and disadvantages of existing and convention systems and methods.
The present invention generally relates to multi-directional disinfection of the objects.
An object of the present invention is to provide a cost-effective system for disinfection.
Another object of the present invention is to provide a system that disinfects objects and organic compounds.
Another object of the present invention is to provide a touchless disinfection system.
According to an embodiment of the present invention, the system comprises of an ultraviolet chamber, an infrared sensor, at least two timer circuit modules, a UV lamp, a rotatory module, a dose counter, a UV sensor
The ultraviolet chamber for disinfecting a plurality of object and food items, wherein the ultraviolet chamber comprises of:
The infrared sensor connected to the ultraviolet chamber for opening a door of the ultraviolet chamber for loading the objects and the food items for disinfection. The infrared sensor detects the presence of the object and the food item inside the ultraviolet chamber and closes the door of the chamber.
The two timer circuit modules connected to a power source for producing at least two delay signals of defined time intervals upon being triggered. The timer circuit module consists of 555 IC, a comparator and a SR flip-flops, the delay is also provided in the monostable mode operation with the 8 pins. The timer circuit module comprises of PIN 1 is ground, PIN 2 is responsible for triggering and
PIN 4 is accountable for Reset the circuit, PIN 5 controls the width of the input waveform.
The timer circuit module also consists of some more component i.e., K resistor, 1K resistor, 220pF/25V capacitor, 10OOpF/25V capacitor (for increasing time delay period) and a BC547 transistor, which is connected to the Relay (6V) and a base terminal is connected to the PIN 3 to drive the IC. When a trigger is given to the circuit then it works only for the particular period depends upon capacitors and resistors used in the circuit.
The plurality of UV lamp is connected to a first timer circuit module for disinfecting a plurality of objects and food items based on a first delay signal, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp is exposed for a definite interval of time based on the first delay signal.
The UV lamp system consists of a cylinder reflector (R=16.51cm
& L=34cm) and 9 inches mercury UV tubes mounted on the curved inner surface of the cylinder by using UV tube holders, wherein the disinfection occurs in two modes namely a hard mode and a soft mode for objects and food materials respectively.
The rotatory module is connected to a second timer circuit module for performing controlled rotation of the ultraviolet chamber in multiple direction based on a second delay signal, wherein the rotatory module exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal. The rotatory section is specially designed to perform two main operations, (a) deliver the power to the lamp unit and (b) controlled rotation of the UV chamber. The rotation of the cylindrical UV chamber is controlled by a timer circuit or Arduino microprocessor according to the requirement of doses to disinfect the virus. The AC power obtained from the power source is transferred to the lamp with the combination of two carbon brushes and a pair of two conductive rings.
The Carbon brush is tied in the two different circles path of a defined radius over the wooden disc and the carbon brush are equipped with a spring to provide proper conduction with circular metal rings which are properly insulated with 1mm thick PVC rings. Now the controlled rotation of the cylindrical chamber is performed by the combination of at least two 9V DC motors by using a timer circuit/ Arduino microcontroller. A wire trolley and doors mounted on the front face of the instrument.
The dose counter is connected to the ultraviolet chamber comprising of a sensor and a controller for measuring intensity of the UV radiation intending at a certain angle and converted to a definite amount of dosage depending on the object and food material.
The UV dose counter is a combination of the UV sensor and an open source microcontroller. The UV sensor has been used to measure the intensity of the incident UV rays at the angle of 130 degree and further converted into the dose.
According to an embodiment, disinfecting a plurality of object and food items in an ultraviolet chamber, wherein the steps of disinfection comprise of:
The first Step discloses about opening a door of the ultraviolet chamber using an infrared sensor for loading the objects and the food items for disinfection.
The second Step discloses about producing at least two delay signals of defined time intervals using at least two timer circuit modules connected to a power source upon being triggered.
The third Step discloses about disinfecting a plurality of objects and food items based on a first delay signal using a plurality of UV lamp connected to a first timer circuit module, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp is exposed for a definite interval of time based on the first delay signal.
The fourth step discloses about performing controlled rotation of the ultraviolet chamber in multiple direction using a rotatory module connected to a second timer circuit module based on a second delay signal, wherein the rotatory module exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal.
The fifth step discloses about measuring intensity of the UV radiation intending at a certain angle using a dose counter connected to the ultraviolet chamber comprising of a sensor and a controller and converted to a definite amount of dosage depending on the object and food material.
The figure shows a power supply of 9v and 5v regulated dc output is supplied from the power source. The power supply consists of a 12V step-down transformer, at least four 1N4007 diode, LM7805 & a 7809 voltage regulator IC, two 10OOpF capacitors, 4.7 K Q, and Light emitting diodes.
The 230V Alternate Current (AC) power supply is fed to the 12V step down transformer for voltage reduction and further output is fed to the four 1N4007 diodes in a bridge rectifier configuration. Now, the
OOpF capacitor is used as filters and LM7805 & LM7809 Integrated Circuit (IC) is a voltage regulator. The 9V and 5V regulated DC output is further used for fed to a first timer circuit module and a second timer circuit module.
The first and the second timer circuit module receives a trigger upon closing the door of the chamber. The timer circuit module generates a delay signal ranging from 0 sec-20 minutes.
However, the delay signal range may vary based on the requirement of the system.
The first timer circuit module is connected to a plurality of ultraviolet lamps for producing a first delay signal to disinfect the object and the food material, wherein the second timer circuit is connected to the rotatory module for rotating the chamber at regular interval based on a second delay signal.
The rotatory module supplies power to the lamp unit and performs controlled rotation of the ultraviolet chamber.
The rotatory module comprises of at least two carbon brushes and a pair of conductive rings, wherein the at least two Carbon brushes are tied in a two different circles path of a ring of a definite radius over the wooden disc and the at least two carbon brushes are equipped with a spring to provide proper conduction with the rings which are properly insulated with a thick PVC ring.
The radius of a circular path is 2.5 cm and 3.5cm radius, and the radius of the wooden disc is 6cm, wherein the radius of circular metal rings is 3cm and 4cm and the thickness of PVC ring is about 1mm with a radius of about 3.2 cm.
The controlled rotation of the cylindrical chamber is performed by a combination of at least two 9V DC motors by using the two-timer circuit.
The UV lamp comprises of a cylinder reflector (R=16.51cm & L=34cm) and 9 inches mercury UV tubes mounted on the curved inner surface of the cylinder by using UV tube holders, wherein the disinfection occurs in two modes namely a hard mode and a soft mode for objects and food materials respectively.
However, the dimensions may vary according to the availability and requirement of the system.
The UV dose counter is connected to the ultraviolet lamps and comprising of a UV sensor and an open-source Atmega328 microcontroller-based Adriano Uno board. The UV sensor is used to measure the intensity of the incident UV rays at the angle of 130 0 and further converted into the dose.
However, the open source controlled may include raspberry pi, Arduino nano, NODMCU or other such known in the art.
According to an alternate embodiment, the incidence angle of UV rays may vary.
The disinfection occurs in two modes, hard disinfection and soft disinfection.
The hard disinfection mode is designed to disinfect the object from two sides direct incident radiation and the reflected UVC radiation sterilizes the remaining sides. This mode is used full for those applications where intense disinfection is required, so it is termed as hard disinfection. The hard disinfection is used in gadgets (mobile phones, masks, water bottles, currency, and all kinds of docs) and surgical tools.
The soft disinfection mode is an additional mode designed to disinfect the food items like vegetables, fruits, and bakery items and other sensitive items. In this mode, the chamber rotates around the object at a constant speed so the UV dose is to be controlled as per the requirement.
According to an embodiment, the UV chamber for disinfecting the objects and the food items. The depth of the chamber is sufficient enough to accommodate the objects and the food items for disinfection. The shape of the chamber is preferably cylindrical; however, any other similar shape of chamber may be used.
The UV chamber comprises of at least 9 inches UVC lamp that is positioned on an inner surface of the cylinder by means of a holder. The UV lamp produces UV radiation that incident at an angle 120 degree to 140 degree and preferably 125 degree and 135 degree for disinfecting the object and food items.
The rotatory module is positioned inside the chamber for rotating the food items and the objects for disinfection. The rotatory module comprises of at least two carbon brush and a protective pin. The carbon brushes conduct electricity. The rotatory module comprises of a conductive surface and a motor shaft. The motor allows rotation of the rotatory module.
According to an embodiment, the cylindrical ultraviolet chamber is positioned inside an insulating housing. The protective glass is positioned on a front part of an insulating housing for viewing the objects and food items. The UV lamp is positioned in the inner surface of the cylindrical chamber by means of the holder. A telescopic channel is positioned between the glass panel/disinfection trolley and the chamber.
The telescopic channel is attached with a mesh. The rotating wheel is present inside the chamber for support the rotation of rotatory module in the process of disinfecting the objects and the food items at regular intervals.
The back portion of the housing comprising of control panel and various electrical components.
The target objects are loaded in the disinfection trolley. Then the closing of the door activates the push switch & trigger. This triggering helps to generate a pulse by IC55, whose width depends upon the value of Resistor & Capacitor. The timer circuits are used for producing delay signals for rotation of cylindrical chamber and operation of UVC lamps for a fixed time. In this manner, the UV dose is controlled by controlling the period of the exposer of UV radiation by the timer circuit. The DC motors UV Lamp is synchronized for simultaneous operation. After complete one cycle, the power in the lamp is driven off, i.e., lamp and motor turn off. The object can be removed from the form disinfection trolley, and now the instrument is for next use and triggers again.
To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.
These and other features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
Figure 1 illustrates a block diagram of the different modules for multi directional disinfection of an object and food item,
Figure 2 illustrates a flow diagram of the method used in the system for disinfecting an object or a food item,
Figure 3 illustrates about a block diagram for working of the system according to Figure 1,
Figure 4 illustrates a pictorial representation of the components of ultraviolet chamber, and
Figure 5 illustrates an exemplary embodiment of the UV chamber.
Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof.
Reference throughout this specification to "an aspect", "another aspect" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises...a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
Figure 1 illustrates a block diagram of the different modules for multi directional disinfection of an object and food item. The system comprises of an ultraviolet chamber 100, an infrared sensor 102, at least two timer circuit modules 104, a UV lamp 106, a rotatory module 108, and a dose counter 110.
The ultraviolet chamber 100 for disinfecting a plurality of object and food items, wherein the ultraviolet chamber 100 comprises of:
The infrared sensor 102 connected to the ultraviolet chamber 100 for opening a door of the ultraviolet chamber 100 for loading the objects and the food items for disinfection. The infrared sensor 102 detects the presence of the object and the food item inside the ultraviolet chamber 100 and closes the door of the chamber 100.
The two timer circuit modules 104 connected to a power source for producing at least two delay signals of defined time intervals upon being triggered. The timer circuit module 104 consists of 555 IC, a comparator and a SR flip-flops, the delay is also provided in the monostable mode operation with the 8 pins. The timer circuit module
104 comprises of PIN 1 is ground, PIN 2 is responsible for triggering and PIN 4 is accountable for Reset the circuit, PIN 5 controls the width of the input waveform.
The timer circuit module 104 also consists of some more component i.e., 10K resistor, 1K resistor, 220pF/25V capacitor, 1000pF/25V capacitor (for increasing time delay period) and a BC547 transistor, which is connected to the Relay (6V) and a base terminal is connected to the PIN 3 to drive the IC. When a trigger is given to the circuit then it works only for the particular period depends upon capacitors and resistors used in the circuit.
The plurality of UV lamp 104 is connected to a first timer circuit module 104 for disinfecting a plurality of objects and food items based on a first delay signal, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp 104 is exposed for a definite interval of time based on the first delay signal.
The UV lamp 104 system consists of a cylinder reflector (R=16.51cm
& L=34cm) and 9 inches mercury UV tubes mounted on the curved inner surface of the cylinder by using UV tube holders, wherein the disinfection occurs in two modes namely a hard mode and a soft mode for objects and food materials respectively.
The rotatory module 108 is connected to a second timer circuit module 104 for performing controlled rotation of the ultraviolet chamber 100 in multiple direction based on a second delay signal, wherein the rotatory module 108 exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal. The rotatory section is specially designed to perform two main operations, (a) deliver the power to the lamp unit and (b) controlled rotation of the UV chamber 100. The rotation of the cylindrical UV chamber 100 is controlled by a timer circuit or Arduino microprocessor according to the requirement of doses to disinfect the virus. The AC power obtained from the power source is transferred to the lamp 104 with the combination of two carbon brushes and a pair of two conductive rings.
The Carbon brush is tied in the two different circles path of a defined radius over the wooden disc and the carbon brush are equipped with a spring to provide proper conduction with circular metal rings which are properly insulated with 1mm thick PVC rings. Now the controlled rotation of the cylindrical chamber 100 is performed by the combination of at least two 9V DC motors by using a timer circuit/ Arduino microcontroller. A glass plate/wire trolley and doors mounted on the front face of the instrument.
The dose counter 110 is connected to the ultraviolet chamber 100 comprising of a sensor and a controller for measuring intensity of the UV radiation intending at a certain angle and converted to a definite amount of dosage depending on the object and food material.
The UV dose counter 110 is a combination of the UV sensor and an open-source microcontroller. The UV sensor has been used to measure the intensity of the incident UV rays at the angle of 130 degree and further converted into the dose.
Figure 2 illustrates a flow diagram of the method used in the system for disinfecting an object or a food item.
disinfecting a plurality of object and food items in an ultraviolet chamber 100, wherein the steps of disinfection comprise of:
Step 202 discloses about opening a door of the ultraviolet chamber 100 using an infrared sensor 102 for loading the objects and the food items for disinfection.
Step 204 discloses about producing at least two delay signals of defined time intervals using at least two timer circuit modules 104 connected to a power source upon being triggered.
Step 206 discloses about disinfecting a plurality of objects and food items based on a first delay signal using a plurality of UV lamp 104 connected to a first timer circuit module 104, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp 104 is exposed for a definite interval of time based on the first delay signal.
Step 208 discloses about performing controlled rotation of the ultraviolet chamber 100 in multiple direction using a rotatory module 108 connected to a second timer circuit module 104 based on a second delay signal, wherein the rotatory module 108 exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal.
Step 210 discloses about measuring intensity of the UV radiation intending at a certain angle using a dose counter 110 connected to the ultraviolet chamber 100 comprising of a sensor and a controller and converted to a definite amount of dosage depending on the object and food material.
Figure 3 illustrates about a block diagram for working of the system according to Figure 1.
The figure shows a power supply of 9v and 5v regulated dc output is supplied from the power source. The power supply consists of a 12V step-down transformer, at least four 1N4007 diode, LM7805 & a 7809 voltage regulator IC, two 10OOpF capacitors, 4.7 K Q, and Light emitting diodes.
The 230V Alternate Current (AC) power supply is fed to the 12V step down transformer for voltage reduction and further output is fed to the four 1N4007 diodes in a bridge rectifier configuration. Now, the OOpF capacitor is used as filters and LM7805 & LM7809 Integrated Circuit (IC) is a voltage regulator. The 9V and 5V regulated DC output is further used for fed to a first timer circuit module 104 and a second timer circuit module 104.
The first and the second timer circuit module 104 receives a trigger upon closing the door of the chamber 100. The timer circuit module 104 generates a delay signal ranging from 0 sec-20 minutes.
However, the delay signal range may vary based on the requirement of the system.
The first timer circuit module 104 is connected to a plurality of ultraviolet lamps 104 for producing a first delay signal to disinfect the object and the food material, wherein the second timer circuit is connected to the rotatory module 108 for rotating the chamber 100 at regular interval based on a second delay signal.
The rotatory module 108 supplies power to the lamp unit 104 and performs controlled rotation of the ultraviolet chamber 100.
The rotatory module 108 comprises of at least two carbon brushes and a pair of conductive rings, wherein the at least two Carbon brushes are tied in a two different circles path of a ring of a definite radius over the wooden disc and the at least two carbon brushes are equipped with a spring to provide proper conduction with the rings which are properly insulated with a thick PVC ring.
The radius of a circular path is 2.5 cm and 3.5cm radius, and the radius of the wooden disc is 6cm, wherein the radius of circular metal rings is 3cm and 4cm and the thickness of PVC ring is about 1mm with a radius of about 3.2 cm.
The controlled rotation of the cylindrical chamber is performed by a combination of at least two 9V DC motors by using the two-timer circuit.
The UV lamp 104 comprises of a cylinder reflector (R=16.51cm
& L=34cm) and 9 inches mercury UV tubes mounted on the curved inner surface of the cylinder by using UV tube holders, wherein the disinfection occurs in two modes namely a hard mode and a soft mode for objects and food materials respectively.
However, the dimensions may vary according to the availability and requirement of the system.
The UV dose counter 110 is connected to the ultraviolet lamps 104 and comprising of a UV sensor and an open-source Atmega328 microcontroller-based Adriano Uno board. The UV sensor is used to measure the intensity of the incident UV rays at the angle of 130 0 and further converted into the dose.
However, the open source controlled may include raspberry pi, Arduino nano, NODMCU or other such known in the art.
According to an alternate embodiment, the incidence angle of UV rays may vary.
The disinfection occurs in two modes, hard disinfection and soft disinfection.
The hard disinfection mode is designed to disinfect the object from two sides direct incident radiation and the reflected UVC radiation sterilizes the remaining sides. This mode is used full for those applications where intense disinfection is required, so it is termed as hard disinfection. The hard disinfection is used in gadgets (mobile phones, masks, water bottles, currency, and all kinds of docs) and surgical tools.
The soft disinfection mode is an additional mode designed to disinfect the food items like vegetables, fruits, and bakery items and other sensitive items. In this mode, the chamber 100 rotates around the object at a constant speed so the UV dose is to be controlled as per the requirement.
Figure 4 illustrates a pictorial representation of the components of ultraviolet chamber.
The figure shows a UV chamber 100 for disinfecting the objects and the food items. The depth of the chamber 100 is sufficient enough to accommodate the objects and the food items for disinfection. The shape of the chamber 100 is preferably cylindrical; however, any other similar shape of chamber 100 may be used.
The UV chamber 100 comprises of at least 9 inches UVC lamp 104 that is positioned on an inner surface of the cylinder by means of a holder. The UV lamp 104 produces UV radiation that incident at an angle 120 degree to 140 degree and preferably 125 degree and 135 degree for disinfecting the object and food items.
The rotatory module 108 is positioned inside the chamber 100 for rotating the food items and the objects for disinfection. The rotatory module 108 comprises of at least two carbon brush and a protective pin. The carbon brushes conduct electricity. The rotatory module 108 comprises of a conductive surface and a motor shaft. The motor allows rotation of the rotatory module 108.
Figure 5 illustrates an exemplary embodiment of the UV chamber.
The cylindrical ultraviolet chamber 100 is positioned inside an insulating housing. The protective glass is positioned on a front part of an insulating housing for viewing the objects and food items. The UV lamp 104 is positioned in the inner surface of the cylindrical chamber 100 by means of the holder. A telescopic channel is positioned between the glass panel and the chamber 100.
The telescopic channel is covered with a mesh. The rotating wheel is present inside the chamber 100 for disinfecting the objects and the food items at regular intervals.
The back portion of the housing comprising of control panel and various electrical components.
The target objects are loaded in the disinfection trolley. Then the closing of the door activates the push switch & trigger (mounted on the front panel of the trolley section). This triggering helps to generate a pulse by IC55, whose width depends upon the value of Resistor & Capacitor. The timer circuits are used for producing delay signals for rotation of cylindrical chamber 100 and operation of UVC lamps 104 for a fixed time. In this manner, the UV dose is controlled by controlling the period of the exposer of UV radiation by the timer circuit. The DC motors UV Lamp 104 is synchronized for simultaneous operation. After complete one cycle, the power in the lamp is driven off, i.e., lamp 104 and motor turn off. The object can be removed from the form disinfection trolley, and now the instrument is for next use and triggers again.
The drawings and the forgoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.
Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any component(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature or component of any or all the claims.
Claims (10)
1. A system for multi-directional disinfection of an object and food item, the system comprises of: an ultraviolet chamber 100 for disinfecting a plurality of object and food items, wherein the ultraviolet chamber 100 comprises of:
an infrared sensor 102 connected to the ultraviolet chamber 100 for opening a door of the ultraviolet chamber 100 for loading the objects and the food items for disinfection;
at least two timer circuit modules 104 connected to a power source for producing at least two delay signals of defined time intervals upon being triggered;
a plurality of UV lamp 104 connected to a first timer circuit module 104 for disinfecting a plurality of objects and food items based on a first delay signal, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp 104 is exposed for a definite interval of time based on the first delay signal;
a rotatory module 108 connected to a second timer circuit module 104 for performing controlled rotation of the ultraviolet chamber 100 in multiple direction based on a second delay signal, wherein the rotatory module 108 exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal; and a dose counter 110 connected to the ultraviolet chamber 100 comprising of a sensor and a controller for measuring intensity of the UV radiation intending at a certain angle and converted to a definite amount of dosage depending on the object and food material.
2. The system as claimed in claim 1, wherein the first timer circuit module 104 is connected to the plurality of ultraviolet lamps 104 for producing the first delay signal to disinfect the object and the food material, wherein the second timer circuit is connected to the rotatory module 108 for rotating the chamber 100 at regular interval based on the second delay signal.
3. The system as claimed in claim 1, wherein the timer circuit comprises of IC 555, a comparator, a flip-flop and other electronic components for generating a delay of 0 sec-20 minutes based on the requirement.
4. The system as claimed in claim 1, wherein the power source comprising of a 12v step down transformer, diode, voltage regulator and other electronic components for supplying power to the two-timer circuit, wherein the first timer circuit receives about 9v regulated dc output and the second timer circuit receives about 5v regulated dc output.
5. The system as claimed in claim 1, wherein the rotatory module 108 supplies power to the lamp unit 104 and performs controlled rotation of the ultraviolet chamber 100.
6. The system as claimed in claim 1, wherein the rotatory module 108 comprises of at least two carbon brushes and a pair of conductive rings, wherein the at least two Carbon brushes are tied in a two different circles path of a ring of a definite radius over the wooden disc and the at least two carbon brushes are equipped with a spring to provide proper conduction with the rings which are properly insulated with a thick PVC ring.
7. The system as claimed in claim 1, wherein the radius of a circular path is 2.5 cm and 3.5cm radius, and the radius of the wooden disc is 6cm, wherein the radius of circular metal rings is 3cm and 4cm and the thickness of PVC ring is about 1mm with a radius of about 3.2 cm.
8. The system as claimed in claim 1, wherein the controlled rotation of the cylindrical chamber 100 is performed by a combination of at least two 9V DC motors by using the two-timer circuit.
9. The system as claimed in claimed in claim 1, wherein the UV lamp 104 comprises of a cylinder reflector (R=16.51cm & L=34cm) and 9 inches mercury UV tubes mounted on the curved inner surface of the cylinder by using UV tube holders, wherein the disinfection occurs in two modes namely a hard mode and a soft mode for objects and food materials respectively.
10. A method for multi-directional disinfection of an object and food item, the method comprises of: disinfecting a plurality of object and food items in an ultraviolet chamber 100, wherein the steps of disinfection comprise of: opening a door of the ultraviolet chamber 100 using an infrared sensor 102 for loading the objects and the food items for disinfection; producing at least two delay signals of defined time intervals using at least two timer circuit modules 104 connected to a power source upon being triggered; disinfecting a plurality of objects and food items based on a first delay signal using a plurality of UV lamp 104 connected to a first timer circuit module 104, wherein at least a mode of disinfection is selected based on the plurality of objects and food items and radiation from UV lamp 104 is exposed for a definite interval of time based on the first delay signal; performing controlled rotation of the ultraviolet chamber 100 in multiple direction using a rotatory module 108 connected to a second timer circuit module 104 based on a second delay signal, wherein the rotatory module 108 exposes the object and food items to the ultraviolet radiation for the definite interval of time based on the second delay signal; and measuring intensity of the UV radiation intending at a certain angle using a dose counter 110 connected to the ultraviolet chamber 100 comprising of a sensor and a controller and converted to a definite amount of dosage depending on the object and food material.
FIGURE 2 FIGURE 1
FIGURE 4 FIGURE 3
FIGURE 5
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| AU2021102643A AU2021102643A4 (en) | 2021-05-18 | 2021-05-18 | A system for multi-directional disinfection of object and a method there of |
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| AU2021102643A AU2021102643A4 (en) | 2021-05-18 | 2021-05-18 | A system for multi-directional disinfection of object and a method there of |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457380A (en) * | 2022-01-21 | 2022-05-10 | 佛山市顺德区美的电子科技有限公司 | Control method and device of electrolysis device, disinfection machine and storage medium |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457380A (en) * | 2022-01-21 | 2022-05-10 | 佛山市顺德区美的电子科技有限公司 | Control method and device of electrolysis device, disinfection machine and storage medium |
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