RU217553U1 - Device for disinfection of air and surfaces by UV irradiation in a sanitary facility - Google Patents

Abstract

The utility model relates to devices for disinfecting air and surfaces in rooms with an increased risk of the spread of infectious agents, in particular, in sanitary facilities. A device for disinfecting air and surfaces by bactericidal irradiation in a sanitary facility includes a bactericidal radiation unit 1 with a source 2 of ultraviolet radiation and an electronic control unit 4. According to the utility model, the device additionally comprises electrical connectors 7 and 8 for connecting a presence sensor 5 and a door opening sensor 6, respectively. Block 1 bactericidal irradiation in the zone 3 of the output of ultraviolet radiation 13 is equipped with a movable screen 10 connected through a kinematic drive 11 and a control unit 4 with electrical connectors 7 and 8. The control unit 4 is configured to generate commands from the door opening sensor 6 and the presence sensor 5 for closing and opening by a movable screen 10 of the zone of ultraviolet radiation exit for access of bactericidal radiation to the room by signals from electrical connectors 7 and 8 in the absence of a person in the room and its overlapping at the time of the presence of a person in the room.

Description

The utility model relates to devices for disinfecting air and surfaces in rooms with an increased risk of spreading infectious agents, in particular, in sanitary facilities, for example, showers, washrooms, smoking rooms and toilet rooms with an unpredictable frequency and duration of stay or absence of a person.

The incidence rate due to microbiological indoor air pollution remains at a high level today. Most pathogenic microorganisms are transmitted by air and airborne droplets. This problem is especially acute in sanitary facilities.

The use of ultraviolet energy is currently becoming increasingly important, as it is one of the main methods of inactivation of viruses, bacteria and fungi. The most widespread, due to the highly efficient conversion of electrical energy into radiation, are low-pressure discharge mercury lamps, in which the process of an electric discharge in an argon-mercury mixture turns into radiation with a wavelength of 253.7 nm. These lamps have a long service life of 5,000–8,000 hours. In open irradiators, a direct bactericidal flow covers a wide zone in space up to a solid angle. They are intended for the process of decontamination of premises only in the absence of people or during their short stay.

A device for disinfecting air and surfaces is known (RU 11068, class A61L9 / 20, 1999), containing a bactericidal ultraviolet radiation lamp connected to a power supply, control, and a comparator, the output of which is connected to the input of the power supply and control, as well as a sensor and ultraviolet radiation power density setter connected to the comparator input.

The disadvantage of the known device is the impossibility of its use in rooms with an unpredictable frequency and duration of stay of people, for example, in toilet rooms in passenger cars, because. the device controls only the power density of the UV radiation, but does not guarantee that the UV illuminator will turn off in the presence of a person.

A device for disinfecting air and surfaces is also known (RU 200422, class A61L 2/10 , A61L 9/20 , A61L 9/12, 2020) , including a block of germicidal ultraviolet radiation lamps containing at least one germicidal lamp of ultraviolet radiation, connected to the electronic unit of ballast equipped with means of power supply and control of bactericidal lamps of ultraviolet radiation and connected to the ultraviolet irradiation intensity sensor. The electronic unit of the ballast is equipped with an electronic controller, the input of which is connected to the output of the ultraviolet irradiation intensity sensor, and the output is connected to the means of power supply and control of bactericidal lamps of ultraviolet radiation. The electronic controller is configured to continuously automatically generate a regulatory action on the means of supply and control of bactericidal lamps of ultraviolet radiation, corresponding to the intensity of ultraviolet irradiation measured by the sensor, and the electronic unit of ballast is equipped with a control input for feedback from the ultraviolet irradiation intensity sensor. The electronic controller is configured to continuously automatically generate a regulatory effect on the means of supply and control of germicidal lamps of ultraviolet radiation, corresponding to the intensity of ultraviolet irradiation measured by the sensor, providing a stable predetermined value of the intensity of ultraviolet radiation of germicidal lamps.

The known disinfection device, which is taken as a prototype, is not effective enough for a room with a sanitary and hygienic purpose.

With frequent visits by people to premises, for example, a toilet room in passenger cars, or shower cabins, the process of spreading infectious agents is at high risk. Air and surface treatment in the room should take place in a short time at the maximum dose of radiation in order for disinfection to come more efficiently, i.e. open irradiator with direct bactericidal flow. However, such radiation can be carried out only in the absence of people in the room, because. open UV radiation adversely affects the human body.

The problem to which the invention is directed is the development of a device with an open UV irradiator that provides disinfection of the room in the absence of a person and the overlap of UV irradiation in the presence of a person.

The technical result of the invention is to increase the efficiency of decontamination of a sanitary facility with a simultaneous increase in the safety of a person's stay in the room.

The technical result is achieved due to the fact that the device for disinfecting air and surfaces by bactericidal irradiation in a sanitary and amenity room includes a bactericidal radiation unit with a source of ultraviolet radiation and an electronic control unit. According to the utility model, the device additionally contains electrical connectors for connecting the presence sensor and the door opening sensor, respectively, and the bactericidal irradiation unit in the ultraviolet radiation exit zone is equipped with a movable screen connected via a kinematic drive and a control unit with electrical connectors. The electronic control unit is configured to generate commands from the door opening sensor and the human presence sensor to close and open the ultraviolet radiation exit zone with a movable screen to allow bactericidal radiation to enter the room based on signals from electrical connectors in the absence of a person in the room and its overlap at the time of human presence indoors, without turning off the source of ultraviolet radiation at this moment.

The presence of a movable screen protects a person from bactericidal ultraviolet radiation when he visits the premises. Ultraviolet radiation can negatively affect the body. Ultraviolet rays have the ability to change the chemical structure of tissues and cells. Prolonged and intense ultraviolet irradiation can have an adverse effect on the body and cause pathological changes.

In the absence of a person in the room, the source of UV radiation will effectively disinfect both the air in the room and the surface of the room.

The movable screen has the ability to instantly open and close to block UV radiation. If the radiation source itself is turned off, a certain time is required for the radiation source to enter the required mode for the possibility of bactericidal disinfection.

The presence of connectors for connecting a presence sensor and a door opening sensor, connected by a signal input through an electronic control unit with a drive, are necessary for instantaneous overlapping of the UV radiation exit zone at the moment the door is opened in the presence of a person inside the room, as well as instant opening of the movable screen upon opening doors from the inside and exit of a person from the sanitary premises, thereby ensuring the effectiveness of disinfection.

The utility model is illustrated by a drawing showing a functional diagram of a device for air and surface disinfection by bactericidal irradiation in a sanitary facility.

The following positions are marked on the figures:

1.Bactericidal irradiation block

2. UV source

3. UV output zone

4. Electronic control unit

5. Presence sensor

6. Door opening sensor

7. Electrical connector for connecting the presence sensor

8. Electrical connector for connecting the door opening sensor

9. Control output of the electronic control unit

10. Moving screen

11. Kinematic drive

12. Door

13 - Ultraviolet radiation.

A device for disinfecting air and surfaces by bactericidal irradiation in a sanitary facility works as follows.

In the absence of a person in the sanitary premises, the zone 3 of the output of ultraviolet radiation is open and ultraviolet radiation 13 from the source 2 of ultraviolet radiation enters the room and disinfects the air and the surface in it. In this case, as a source 3 of ultraviolet radiation, amalgam, excimer, pulsed xenon, LED, etc. can be used. lamps, and their number depends on the type of sanitary facilities and its volume.

When the door 12 is opened and a person enters the room, the door opening sensor 6 and the presence sensor 5 are triggered. The signal inputs from the electrical connector 7 for connecting the presence sensor 5 and the signal inputs from the electrical connector 8 for connecting the door opening sensor 6 are fed to the electronic control unit 4, which sends a signal to the control output 9 of the electronic control unit connected to the kinematic drive 11 to turn it on and actuation of the movable screen 10. The movable screen 10 covers the zone 3 of the ultraviolet radiation outlet 13 to cover the source 2 of ultraviolet radiation, thus, the person is not exposed to UV radiation during his presence in the room. The movable screen 10 can be made in the form of louvres, curtains, plates, etc.

The opening of the movable screen 10 is carried out when a signal is received through the electrical connector 8 for connecting the door opening sensor 6 and the electrical connector 7 for connecting the presence sensor 5 to the electronic control unit 4, notifying it of the absence of a person in the room. The control output 9 of the electronic control unit 4 turns on the kinematic drive 11 and the movable screen 10 opens, the ultraviolet radiation 13 from the source 2 passes through the zone 3 of the ultraviolet radiation output, and disinfects the air and surface in the sanitary and amenity premises.

A device for air and surface disinfection by direct bactericidal irradiation in a sanitary and amenity room has increased efficiency due to the fact that the ultraviolet radiation exit zone overlaps and opens instantly when the door is opened and the presence/absence of a person. At the same time, the radiation source itself does not turn off, thereby direct bactericidal irradiation enters or is blocked into the room instantly without the time delay required when the ultraviolet radiation source is turned on.

A device for air and surface disinfection by bactericidal irradiation in a sanitary facility has been tested with positive results.

Claims (1)

A device for disinfecting air and surfaces by bactericidal irradiation in a sanitary facility, including a bactericidal radiation unit with an ultraviolet radiation source and an electronic control unit, characterized in that the device additionally contains electrical connectors for connecting a presence sensor and a door opening sensor, respectively, and the bactericidal irradiation unit in the ultraviolet radiation exit zone, it is equipped with a movable screen connected via a kinematic drive and a control unit with electrical connectors, the electronic control unit is configured to generate commands from the door opening sensor and the human presence sensor to close and open the ultraviolet radiation exit zone by the movable screen for access bactericidal radiation into the room by signals from electrical connectors in the absence of a person in the room and its overlap at the time of the presence of a person in the room, without turning off the source of ultraviolet radiation at that moment.

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