Technical field:

Field of infection control .

Background Art:

The Air sterilizers used to function using UVC (253.7 nm) ultraviolet light aided by HEPA Filters, made of fiberglass. Those fiberglass HEPA filters require fans with high capacity to overcome very narrow filter pores.

And by using a coupling between ultraviolet rays and catalysts, such as titanium dioxide, whereby combining them results in the cracking of moisture in the air to produce oxidizing agents that sterilize the air.

These devices contain fans, UV ray lights, and filters.

The problem or shortcoming in the previous art:

1- The problem of high volume (in large capacity devices):

After treating the air in sterilizers, it was found that the higher the air rate that rushes out of the device, with air flow exceeding 150 m3/h)

The device was very loud, which made it obsolete to be installed everywhere.

Especially that fine filters need fans with very high static pressure to overcome the resistance of the pores of the fine filters, to be able to pass an appropriate amount of air.

This results in a very annoying sound that reduces the use of these devices despite its many benefits, and this dilemma of loud sound required our thought to solve the problem. 2- The problem of bacterial accumulation on the high-efficiency filter (HEPA Filter):

As the common old fine filters are made of fiberglass (Fiber Glass), bacteria were accumulating on its surface, and these trapped bacteria caused contamination, and during filter replacement, it might occur (a big problem) for maintenance workers because of the difficulty of changing it.

Disclosure of the invention :

Self-protection.

Placing UVC rays in air handlers before HEPA Filters helps kill the bacteria accumulated on the filters and sterilized them first, but it causes a corrosion problem to parts of the micro-filters when exposed to the UVC rays.

Whaf s new in the topic of invention?

1. To solve the first problem, we used 2 low acoustic Cross Flow Fans in series that push the air needed to pass through the PTFE HEPA Filter.

2. Our initiative to use a new type of filter in order to solve the second problem, we used a filter material that resists ultraviolet rays without eroding, which is the high- efficiency particulate absorption filter known as (HEPA Filter), which is made of Teflon (PTFE), which is characterized to withstand ultraviolet rays (UVC) and does not require a very high static pressure, unlike common filters. We need to use high- volume fans, which are also resistant to the impact of radiation, which helps to maintain them easier.

Detailed description:

(Includethe method of operation in cases of devices, tools and equipment, or the method of chemical preparation in cases of chemical and agricultural materials, laboratory experiments, and side effects)

Device Name: UV Flux List of device components:

Part Name

1) Metal Box 9 Catalytic Titanium Dioxide Filter

2) Metal Cover 10 Fan

3) fan 11 power cable and socket

4) primary filters 12 electrical transformers for lamps

5) titanium dioxide filter 13 -hour counters

6) UV lamps 14 iron base

7) High Efficiency HEP A Particulate Adsorption Filter 15 Wheels

8) UV bulbs

How the device works:

The device consists of a sealed metal box that does not allow rays to escape from it. This box contains a door for inspection, maintenance and repair and contains a fan that draws air into the device to pass through a primary filter stage and then a filtration unit containing titanium dioxide to generate oxidized particles that kill microbes. After that, the air passes on ultraviolet rays directed at a high-efficiency particle absorption filter, then the air comes out of the complete filtration stage to be exposed to a strong dose of ultraviolet rays to make sure that any microbes or viruses in the air are killed and finally passes through a titanium dioxide filter that gets rid of any odors produced from volatile organic matter. The lamp life is about 9000 hours, and the device is equipped with an hour counter to help the maintenance service change the UVC lamps in time.

The device is provided with a gauge to measure the pressure difference before and after the HEPA filter. If the pressure difference reaches a certain limit, this means that the filter is clogged and needs to be changed. Exploitation method:

The value of the device lies in the ability to sterilize the air by 99.99% of bacteria and viruses.

It can be used in:

1- Hospitals.

2- Clinics and operating rooms.

3- Meeting rooms in all companies and institutions.

4- Mosques.

5- Churches.

6- Houses.

7- All closed areas.

Steps to implement it:

- A box is made, as shown in the drawing, of painted galvanized sheet, and lined from the inside with a layer of polished aluminum similar to a mirror in the ultraviolet area, and the internal parts are installed in the order indicated in Figure No. (1)

- Electricity is connected from the socket (the plug) to the cable to the electrical socket in the device, where the motors are supplied with a 220-volt connection, as well as the supply of electricity for the operation of the ultraviolet lamps with a source of 220 volts. The ultraviolet lamps are connected to their transformers (trans) where they are connected. Each adapter bulb has four wires exiting from the adapter outlet.

The device works with all its parts together at the same time by simply pressing the power button. Brief description of the drawing:

Figure No. (1) represents all the external and internal parts of the device:

• No. (1): Figure (1) represents the outer metal box made of galvanized steel lined from the inside with a layer of mirror-like polished aluminum to reflect ultraviolet rays throughout the device from the inside. The box contains side openings from the bottom for air entry and openings at the top of the box for the exit of sterilized air.

• No. (2): Figure No. (1) represents the tight metal cover that does not allow ultraviolet rays to escape.

• No. (3): Figure No. (1) represents the first fan in the device and its function is to draw air into the device.

• No. (4): Figure No. (1) represents a primary filter for dust retention and primary air purification.

• No. (5) in Figure No. (1) represents the titanium dioxide filter that produces oxidizing particles for sterilization and for treating the air from unpleasant odors resulting from volatile organic substances.

• No. (6): Figure No. (1) represents two ultraviolet lamps, whose function is to sterilize the air in the first place and to kill all the bacteria accumulated on the fine particulate filter mentioned below.

• No. (7): Figure No. (1) represents a high-efficiency particulate adsorption filter, known as a HEPA filter, and its function is to trap bacteria and purify the air, and it is made of Teflon (PTFE), which distinguishes it from requiring less static pressure than common filters and also its resistance to radiation Ultraviolet

• No. (8): Figure No. (1) 6 UV lamps whose function is to provide the necessary dose to kill any bacteria or viruses that may have passed from the stage of the high- efficiency filter with complete and complete sterilization of the air so that it comes out pure and healthy.

• No. (9): Figure No. (1). Another titanium dioxide filter represents its main function to absorb ultraviolet rays from the last stage of the lamps, as it produces oxidizing particles for sterilization, then to prevent the rays completely from reaching the outside and ensuring the exit of the air is pure and without No odors. • No. (10): Figure No. (1) represents another fan and its function is to assist the first fan No. (3) in doubling the air flow to overcome the static pressure generated by the HEP A filter No. (7).

• No. (11): Figure No. (1) represents a cable to connect the electricity "plug" and a plug.

• No. (12): Figure No. (1) represents "Trans" electrical transformers for ultraviolet lamps, and each bulb has its own transformer.

• No. (13): Figure No. (1) represents the hours counter whose function is to calculate the number of operating hours for the device to know when to change the bulbs after the number of operating hours stipulated in the usage catalog.

• No. (14): Figure No. (1) represents an iron base whose function is to carry the device and maintain its balance in a vertical position.

• No. (15): Figure No. (1) represents the number of 4 wheels and its function is to facilitate the movement of the device and its transfer from one place to another as desired.

Follow the explanation of the drawing boards:

Figure No. (2) represents the external shape of the device from its various directions:

• No. (1): Figure (2) represents the shape of the device from the front, resting on the iron base and wheels. It shows the presence of the fan, then filters for purification and lamps, then a high-efficiency filter, then the next lamp unit, and finally the fan and the titanium dioxide filter.

• No. (2): Figure No. (2) represents the shape of the device from the side and shows the same internal components of the device and the power cable is shown in it.

• No. (3): Figure No. (2) represents the shape of the device from the front with three-dimensional images showing all the components of the device from more than one side. Figure No. (3)

It represents the general shape of the device

Drawing boards: Figure No. (1)