ES1249340U - DISINFECTION OF ROOMS THROUGH GERMICIDAL UV (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Disinfection of rooms by germicidal ultraviolet characterized by having means for the filtration and retention of particles above 0.1 microns, formed by an inlet grille at the inlet mouth (2), with a primary pre-filtration stage formed by a pre-filter F5 or F7 (3), a filtration stage formed by a filter type F9 (4), to warn of the saturation of the filters, has at least one pressure switch (15), an extraction system using a turbine formed by fan (5) that is soundproofed inside an envelope covered with sound-absorbing acoustic insulation (6) and where uniformly distributed mounted emitters interrupt the passage of air, forcing it to be in close contact with the surface of at least one germicidal lamp (8) with an intensity at 1 meter minimum of 9 μwcm2, preferably from 9 to 36 μwcm2 and a main wavelength of 254 nm ozone-free; the disinfection unit allows both disinfection of ventilation and air conditioning systems by having inlet (2) and outlet (10) ports for connection to the installation, as well as means to directly irradiate on the surfaces of a room by having at least one manhole cover (11) whose opening allows the radiation from the germicidal lamps to hit the facing surfaces; the assembly can be movable presenting wheels (12) for its transport and a guide handle. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

ROOM DISINFECTION USING GERMICIDAL UV

Technical sector

The present invention is framed in the industrial sector dedicated to the disinfection of areas with possible pathogenic contaminants, of special relevance in the Coronavirus 2019 and without limitation of application in the health sector and in those that require means for the prevention of infections.

State of the art

It is known that systems based on ultraviolet radiation in its _{germicidal or UVc spectrum provide effective prevention measures against the} spread of diseases transmitted through heating, ventilation and air conditioning systems in buildings (HVAC) as well as application for the disinfection of different surfaces. Some of the inventions developed are based on the placement of these UVc lamps or emitters at the outlet of air heaters or an air conditioner, as stated in document ES0120911U of the applicant Marroig Fontseré. The disinfection of the air that an extractor receives is also subject to the use of a germicidal lamp that is combined with a heater to condition the air, as stated by ES0140577U of the applicant Talleres Escu SA Its use in _{more recent documents is also collected again for disinfection of} air and an electrostatic precipitation as shown in the patent applied by Carrier Corporation (US) publication number ES2235444.De across the benefits of applying UVc for disinfecting instruments medical doctor reflected in solutions as the one included in the utility model ES172239 in favor of Folch Centelles, which describes a sterilizing display case designed to deposit the objects to be disinfected by means of the radiation of UVc lamps that it has inside.

A part of these innovations are aimed at satisfying the environmental hygiene measures of health centers and hospitals, although new needs arise to equip other environments with this type of technology, this has unfortunately been seen in the health crisis caused by COVID- 19, what precise converting spaces such as medicalized hotels or the future needs of society in general for the development of its activity.

In view of the different documents of the state of the art, it appears that it is a mature field and that a large part of its innovations are aimed at its use in new applications of interest or improvements in the efficiency of these systems. Sterilization or disinfection devices that meet these needs are not known as the invention advocated.

Object of the invention

Provide a technical solution that allows the elimination of pathogens such _{as particles, pollen, mites, bacteria and viruses in suspension in the air, for the} adequate hygiene of a room, through several stages of filtration F7, and finally F9 before their return to the enclosure, as well as the dosage of ultraviolet radiation in the short wave range UVc in the range (184-254 nm) contemplating the emission of ozone when required.

Solve the harmful effects on health of an air contaminated with pathogens in the prevention of contagions, as well as the possibility of reducing harmful elements such as ozone in the presence of people, minimizing exposure to toxic products contained in the chemicals used in other media disinfection; The disinfection of rooms by purification with _germicidal UVc _{must allow the use of ozone by providing it without the presence} of people or animals in the room and within the maximum values allowed (National Institute of Safety and Health at Work, INSHT 2011) as limits professional exposure.

It must be able to be located both on the ceiling and on the wall of a room. Its portable use should be considered to adapt to the different needs that arise in the field of disinfection, as well as the possibility of irradiating on small objects in a removable interior receptacle. Another object of the invention is to allow both irradiation on air in a duct system and direct irradiation within a room. Another object of the invention is both the generation of ozone and the elimination of that produced by the germicidal emitters.

Description of the invention

The disinfection of rooms by means of radiation of the germicidal spectrum of the ultraviolet described in this invention allows to offer different solutions in the same equipment, in such a way it can be installed for the disinfection and purification of the air of a room by being inserted in the conventional means of heating, ventilation and air conditioning (HVAC) as it has an inlet and an outlet that connect to the ducts, its installation can be carried out both on ceilings and on walls, being allowed on the other hand its use as a portable equipment equipped with wheels and handle for its transport that can be located where it is _{necessary, a fact that introduces clear economic advantages and flexibility, making it} possible to enable safe spaces as for example, has been seen in the needs of medicalized hotels due to the health alert caused by Covid-19 and this way to withdraw when not necessary.

It has after its air inlet a filtering stage consisting of at least one suction filter F7 + F9 and a carbon filter in the impulse, and / or a HEPA type, this last filter guarantees that a large part of pathogens do not pass through of it since leaks of 0.1 microns are reached, when for example the size of the Covid-19 virus has a size of 0.3 microns. This location provides a more effective control over pathogens than the UVc installations in a _{conventional duct, as it is what is required according to the UNE-EN 1377} IDA 1 standard (optimum quality air: hospitals, clinics, laboratories and nurseries). The air flow is conducted through the filters prior to passing through a set of lamps with a wavelength corresponding to ultraviolet with an intensity at a minimum of 9 ^ wcm2, preferably from 9 to 36 ^ wcm2 and a wavelength ozone-free 254 nm main, giving a maximum flow of 100 m3 / h, the flow control can be adjusted by means of an inverter or a manual chopper. The ultraviolet C-band light as it is known directly attacks the DNA / RNA of microorganisms, destroying their cells and making replication impossible, making this dose lethal enough to guarantee disinfection.

The UVc emitters are arranged in such a way that a labyrinth is created between them through which the circulating air must pass through all of them on its way, thus guaranteeing the safety of the system. To check the Correct operation of the lamps, it has been considered to place some sight glasses that coincide with them, which allows a quick and easy visual inspection, on the other hand, the loss of light intensity of these due to both their operating hours and other possible factors is analyzed using at least one lux meter whose values show the performance in terms of light power to guarantee that disinfection is being carried out within what is required. The distance between the lamps and their power determines the flow rate that can be treated based on the scientific technical recommendations that set the doses for the inactivation of pathogens.

_{The recommended disinfection unit allows direct irradiation on the} surfaces of a room, as it has a manhole cover that can be opened exposing the lamps, it has means to prevent radiation reaching a person to prevent its activation by means of detectors presence, as well as a time programmer to set their disinfection cycles.

It has been foreseen that it can emit ozone if it is required for certain applications as well as to improve the cleaning and saturation of the filters, in the same way it contemplates the placement of an additional activated carbon filter to eliminate the ozone that is emitted by the lamps. UVc located behind these.

It has a removable receptacle located close to at least one _radiation source, _{which allows disinfecting small objects contained in it, thus} meeting health needs such as disinfection of patients' personal objects, masks, such as dental prostheses, watches, or others in hotel rooms such as the TV remote control, wallets etc, this receptacle does not impede air circulation as its bottom is made as a grid.

Description of the drawings

For a better understanding of what is described in the present specification, some drawings are attached in which, by way of example without limitation, a list of the figures of the proposed invention is represented.

Figure 1 shows a front view of the air disinfection unit in which it can be seen:

1. Inlet grille.

2. Inlet mouth

3. Primary filtration stage

4. Secondary filtration stage

5. Centrifugal extractor

6. Sound absorbing sound insulation

7. Control and ignition panel

8. UVc emitters

9. HEPA filter

10. Outlet

11. Manhole cover (in this open figure)

12. Transport wheels

13. Reserve for Carbon filter

14. Labyrinth for air guidance

15. A dirty or low flow filter pressure switch

16. Light level sensor, lux meter

19. UVc emitters inspection glasses

Figure 2 shows an isometric view of the disinfection unit in its portable use, in which the transport wheels (12), the visors (19) and the receptacle (20) can be seen extracted.

Figure 3 shows the different locations that the disinfection unit can have, installed on the ceiling (17), on a wall (18), or as a portable unit on the floor of the room.

In Figure 4, an example of its use is shown by depressurizing a room from the top, used as a system for introducing air into a clean room from outside the building and once the air has been purified its impulsion inside the room or chamber. Both mounts in false ceiling.

Description of a preferred embodiment

A preferred embodiment is cited by way of example, the materials used in its manufacture, as well as the application methods and all the accessory details _{that may be presented, as long as they do not affect their essentiality,} being independent of the object of the invention _.

The preferred embodiment includes the characteristics described, in such a way that the disinfection unit has an inlet (2) and an outlet (10) next to the centrifugal extractor (5) with which it can be installed in an HVAC system ( heating , ventilation and air conditioning) and in this embodiment it is described in its possibility of being used as a portable unit since it has wheels (12), it has a primary filtration stage located in the inlet mouth (2), a pre-filter type F5 or F7 (3), a filter type F9 (4) with the ability to filter particles greater than 1 micron, after which it has a plurality of lamps or ultraviolet emitters (8) in its C band or / and ozone arranged close between them and in such a _{way that the circulated air passes through all of them like a labyrinth (14), it has} to verify its operation of at least one viewer (19) coinciding with the lamps and located on its registration cover (11), thus It also has a lux meter (16) to this end, final stages carbon filter (13) and as last stage a HEPA filter (9).

It can irradiate directly on the surfaces of a room by having a registration cover (11) that can be removed exposing the germicidal lamps (8), it has a presence sensor and a time programmer.

It allows the disinfection of small objects by presenting the unit with a removable receptacle (20) adjacent to the radiation emission sources, the base of which is a grid on which they are deposited.

Versions are planned in which the unit can supply ozone through the appropriate emitters as an alternative to an ozone generator but with particle retention filters.

Claims (8)

1. Disinfection of rooms using germicidal ultraviolet characterized by having means for the filtration and retention of particles above 0.1 microns, formed by an inlet grid in the inlet mouth (2), with a primary prefiltration stage formed by a prefilter F5 or F7 (3), a filtration stage formed by a filter type F9 (4), to warn of the saturation of the filters it has at least one pressure switch (15), an extraction system by means of a turbine formed by fan (5) that is soundproofed inside an envelope covered with sound absorbing acoustic insulation (6) and where evenly distributed mounted emitters interrupt the passage of air forcing it to be in close contact with the surface of at least one germicidal lamp (8) with an intensity at 1 meter minimum of 9 ^ wcm2, preferably from 9 to 36 pwcm2 and a main wavelength of 254 nm free of ozone; The disinfection unit allows both the disinfection of ventilation and air conditioning systems by having inlet (2) and outlet (10) ports for connection to the installation, as well as means to irradiate directly on the surfaces of a room by having at least one manhole cover (11) the opening of which allows the radiation from the germicidal lamps to hit the opposite surfaces; The assembly can be movable presenting wheels (12) for its transport and a guide handle. 2. Disinfection of rooms using germicidal ultraviolet according to the first claim characterized by using in the germicidal system a combination of lamps of wavelength 254 nm and lamps of wavelength 185 nm, which allows the generation of ozone. 3. Disinfection of rooms by means of germicidal ultraviolet according to the first claim characterized by having means to eliminate the ozone generated by the germicidal lamps and gaseous pollutants through the use of an active carbon filter (13) located upstream of the area that contains germicidal lamps. 4. Disinfection of rooms by means of germicidal ultraviolet according to the first claim characterized by using a HEPA filter (9) in the filtration system to eliminate possible bacteria and particles of size greater than 0.1 microns in the blown air, as the final phase before escaping abroad. 5. Disinfection of rooms using germicidal ultraviolet according to the first claim characterized by having means to prevent its operation in the presence of people when irradiating on surfaces with the registration cover (11) open by means of presence sensors and a time programmer. 6. Disinfection of rooms by means of germicidal ultraviolet according to the first claim characterized by having means to know the luminous power of the lamps by means of a lux meter (16). 7. Disinfection of rooms by means of germicidal ultraviolet according to the first claim, characterized by allowing small objects to be irradiated by having a removable receptacle (20) adjacent to at least one germicidal lamp whose bottom is formed by a grid on which to deposit these. 8.

Room disinfection using germicidal ultraviolet according to the preceding claims, characterized in that it has means to visually check the operation of the lamps by presenting the registration cover (11) of at least one viewer (19) coinciding with the lamps. one