DE102020213563B4 - Disinfection module and workplace arrangement - Google Patents

Abstract

Workplace arrangement (10) having a worktop (14) and a disinfection module (12) which can be arranged on a top surface (18) of the worktop (14), the disinfection module (12) having the following:- a surface (18) displaceable housing (20), - a drive device (24) for moving the housing (20) on the surface (18), - an air circulation device (32) for guiding air through the housing (20), - an in the housing (20 ) arranged UV light source (26) for irradiating the surface (18) and the air guided through the housing (20) with UV radiation, preferably UV-C radiation, characterized in that an air duct ( 58) is provided in order to conduct disinfected air from the disinfection module (12) to a user of the workstation arrangement (10).

Description

• - ein auf der Fläche anordenbares Gehäuse,
• - eine Antriebseinrichtung zum Bewegen des Gehäuses auf der Fläche,
• - eine Luftumwälzeinrichtung zum Führen von Luft durch das Gehäuse,
• - eine in dem Gehäuse angeordnete UV-Lichtquelle zum Bestrahlen der Fläche und der durch das Gehäuse geführten Luft mit UV-Strahlung, vorzugsweise UV-C-Strahlung.

The invention relates to a workstation arrangement having a worktop and a disinfection module which can be arranged on a top surface of the worktop, the disinfection module having the following:

• - a housing that can be arranged on the surface,
• - a drive device for moving the housing on the surface,
• - an air circulation device for conducting air through the housing,
• - A UV light source arranged in the housing for irradiating the surface and the air guided through the housing with UV radiation, preferably UV-C radiation.

Such a workplace arrangement is over JP 2019 103 816 A known.

It is well known that pathogens such as viruses or bacteria can be transmitted in droplets or aerosols through the air (so-called droplet infection) or when objects or other people are touched (so-called smear or contact infection). In particular, when several people are in the same room or use the same objects, there is a risk of transmission of pathogens.

Furthermore, it is generally known that UV light can kill or inactivate pathogens. For this purpose, the pathogens are exposed to UV light of sufficient intensity for a sufficient period of time.

Thus, on the one hand, it is known to conduct air past a UV light source for air disinfection. For this purpose, devices have been proposed that can be placed indoors or integrated into ventilation systems. Such devices can typically be operated while people are in the room in question.

On the other hand, it is known to irradiate surfaces with UV light in order to disinfect them. Smaller objects with surfaces to be disinfected, such as surgical instruments or food packaging, can be placed in closed chambers and irradiated with UV light there. To disinfect larger surfaces, open UV light sources can be operated in the vicinity of these surfaces so that the UV radiation emitted hits the surfaces. In order to avoid health hazards, however, surface disinfection can only take place in this way if there are no people in the room with the surfaces to be disinfected.

From the one mentioned above JP 2019 103 816 A a sterilizing apparatus is known which has an infrared light source and a UV light source for irradiating an object to be sterilized. The sterilizer has a drive motor for driving drive wheels. Air from a vicinity of a surface is exposed to UV radiation by a fan. The sterilizer can be used on a work table.

Other disinfection devices of a similar kind are out KR 10 2016 001 946 A and US 2013/0270459 A1 known.

object of the invention

It is an object of the invention to reduce the risk of infection, particularly when rooms and objects are shared by several people.

Description of the invention

This object is achieved according to the invention by a workstation arrangement according to claim 1. The dependent claims and the description specify advantageous embodiments.

Workplace arrangement according to the invention

According to the invention, a workplace arrangement is provided. The workstation arrangement has a worktop. The worktop can be part of a table, in particular a desk, a workbench or a laboratory table, in particular for a medical laboratory. The workstation arrangement also has a disinfection module described below. The disinfection module can be arranged on a top surface of the worktop. The indication of the direction "up" refers to a usage position of the worktop. When the workstation arrangement is in use, in particular during operation of the disinfection module of the workstation arrangement, the disinfection module is arranged on the worktop.

The disinfection module makes it possible to disinfect the top of the worktop. For this purpose, the disinfection module can be moved on the worktop by means of the drive device, while the UV light source irradiates the worktop. Such a disinfection of the top surface of the worktop can take place in particular when there is a change between two users of the workstation arrangement. The danger of a Smear infection from a first to a subsequent user can be effectively reduced in this way. Furthermore, such a disinfection of the top surface of the worktop can take place, for example, during a break of a user of the workstation arrangement. This can prevent a build-up of germs on the countertop.

Furthermore, the disinfection module makes it possible to disinfect the (ambient) air while the workstation arrangement is being used. For this purpose, the air can be guided through the housing by means of the air circulation device and can be irradiated by the UV light source inside the housing. In particular, when several people are present in the same room, this can reduce the risk of disease transmission through droplets or aerosols. Air disinfection is typically performed while the work station is in use, e.g. H. while working on the countertop. In addition, the air disinfection can be carried out when people are in a room with the workplace arrangement, even without working directly on the worktop. The term work includes all activities that can be performed at a worktop.

A guide device for guiding the disinfection module over the surface can be provided on the worktop. This makes it easier to move the disinfection module across the surface. In particular, the guide device can reliably prevent the disinfection module from falling off the worktop.

According to the invention, an air duct is provided on the worktop in order to conduct disinfected air from the disinfection module to a user of the workstation arrangement. For this purpose, an air outlet can be formed at a usual location of the user while using the workstation arrangement, for example on a front side (facing the user) of the worktop. The user can therefore be bathed in disinfected air. This particularly effectively reduces the risk of airborne disease transmission to the user of the workstation arrangement.

The air duct preferably runs through the worktop at least in sections. This enables space-saving integration of the air duct into the worktop.

The worktop can have an inlet section for admitting disinfected air from the disinfection module into the air duct. The air duct therefore runs through the worktop at least in the area of the inlet section. When the disinfection module is operated for air disinfection, it is then always located in the area of the inlet section. If the disinfection module has a light outlet in the form of a light outlet opening, disinfected air can be introduced from the disinfection module into the air duct through this light outlet opening. This simplifies the interaction of the disinfection module with the worktop or the air duct. A shielding of the housing lying against the top surface of the worktop can reduce or preferably avoid a leakage current between the housing and the worktop. This further improves the targeted delivery of the disinfected air.

Disinfection module for the invention

The workplace arrangement according to the invention comprises a disinfection module. The disinfection module has a housing. The housing can be arranged on a surface. The surface can be a work surface, for example a desk, a workbench or a laboratory table, in particular for a medical laboratory. The area can also be a floor, for example a production hall, a sports hall or a laboratory, in particular a medical laboratory.

The disinfection module has a drive device for moving the housing on the surface. In other words, the driving device makes it possible to move the housing over the surface.

The drive device can have a traction means, for example a cable and/or a chain. The traction means is preferably arranged circumferentially in order to be able to move the disinfection module forwards and backwards.

Alternatively or additionally, the drive device can have a guide device for guiding the housing during movement on the surface. The guide device can be a guide rail. A traction device can circulate on or in the guide rail.

Furthermore, the disinfection module has an air circulation device for guiding air through the housing. In other words, the air circulation device makes it possible to direct air into the housing and to release air from the housing. Upon entering the enclosure, the air is potentially contaminated with pathogens. Before exiting the housing, the air is always disinfected during operation of the disinfection module, i. H. the infectivity of any pathogens present is reduced.

Finally, the disinfection module has a UV light source. The UV light source is used to irradiate the surface and the air guided through the housing. The UV light source can have a gas discharge lamp, for example a mercury vapor lamp, in particular a quartz lamp. Likewise, the UV light source can have a UV LED. In operation, the UV light source emits UV radiation (UV light) with a wavelength of 380 nm or less. The UV light source is preferably a UV-C light source which, during operation, emits UV-C radiation with a wavelength of at most 280 nm. The wavelength of the UV radiation emitted by the UV light source is typically at least 100 nm.

The disinfection module thus enables the surface to be disinfected on the one hand (in a first operating mode). For this purpose, the disinfection module is moved by means of the drive device over the surface, which is meanwhile being irradiated with UV radiation by the UV light source. This can destroy or inactivate pathogens present on the surface.

On the other hand, the disinfection module (in a second operating mode) enables disinfection of (ambient) air. For this purpose, the air is guided through the housing by means of the air circulation device and is irradiated with UV radiation by the UV light source inside the housing. This can destroy or inactivate airborne pathogens.

Typically, at some point in time, either the surface is disinfected or the air is disinfected. In principle, however, it is also possible to disinfect the surface and the air guided through the housing at the same time.

The disinfection module makes it possible to disinfect both the surface and the air with the same UV light source. In this respect, the present invention also relates to the use of a UV light source arranged in a housing for irradiating a surface and air guided through the housing with UV radiation.

The UV light source is advantageously arranged in the housing in such a way that UV radiation can only exit towards the surface. This means that the disinfection module can also be operated when people are in the vicinity. The housing can have a shield, preferably a peripheral shield, for contact with the surface. This can prevent people from being hit by UV radiation after it has been reflected by the surface.

The disinfection module can have rollers for moving the disinfection module on the surface. The rollers are typically attached to the housing. The rollers can be in the form of wheels or ball rollers. If wheels are provided, a direction of travel of the disinfection module is specified by a (current) orientation of the wheels. One or more of the wheels may be steerable. If ball casters are provided, the direction of travel of the disinfection module is determined by an instantaneous direction of rotation of the ball casters.

At least one of the rollers can preferably be driven by the drive device. The disinfection module can then be moved particularly easily over the surface. In particular, the disinfection module can be used on different surfaces without having to take precautions there for driving the disinfection module.

The air circulation device can have a fan. The fan is preferably arranged at an air inlet opening of the housing. This is advantageous in terms of efficiently circulating the air.

The housing can have a large number of air outlet openings. The air outlet openings are preferably distributed over an upper side and/or a front side of the housing. As a result, a uniform discharge of cleaned air with a low flow rate can be achieved. The top is formed on the housing facing away from the surface. During operation of the disinfection module, the front typically faces a user.

The housing can have a light outlet, which enables direct irradiation of the surface using the UV light source. This increases the intensity of the UV radiation hitting the surface. Any pathogens present there can be rendered harmless in a particularly effective manner. The light outlet can be a light outlet opening. The UV radiation then hits the surface undiminished. Alternatively, the light outlet can be a light outlet window. As a result, air guided through the housing can be prevented from escaping from the light outlet when the disinfection module is used for air disinfection. The disinfection module can have a closure for the light outlet. When operating the disinfection module for air disinfection, the light outlet can be closed using the closure. Damage to the surface caused by long-lasting irradiation of the same surface area can be avoided in this way. In addition, the shutter can prevent unwanted escape of air from the light outlet.

The housing can be mirrored at least in sections on the inside. The UV light source can be arranged in particular in a mirrored chamber of the housing. The mirror coating can be set up to reflect UV radiation, which is emitted away from the surface by the UV light source, onto the surface. The mirror coating can therefore enable indirect irradiation of the surface. The reflected UV radiation can fall through a light outlet for at least partially direct irradiation of the surface from the housing onto the surface. This increases the effectiveness of the disinfection module when disinfecting surfaces. Alternatively or additionally, the mirror coating can be set up to reflect UV radiation back and forth inside the housing, preferably multiple times. This increases the intensity of the UV radiation inside the housing and thus increases the effectiveness of the disinfection module in air disinfection.

A disinfection chamber for accommodating an object to be disinfected can be formed in the housing. The UV light source can then also be used to disinfect the object. The object can be, for example, a mobile phone, a writing implement or a computer input device.

The disinfection chamber preferably has a wall that is permeable to UV radiation towards the UV light source. The item in the disinfection chamber can then be directly irradiated by the UV light source. The wall that is permeable to UV radiation can in particular form a floor and/or a side wall of the disinfection chamber.

The housing can have a flap for opening and closing the disinfection chamber. An inside of the flap is preferably designed to be reflective. By reflecting the UV radiation on the playful inside of the flap, the object can then also be irradiated and thus disinfected on its side facing away from the UV light source.

Further advantages of the invention result from the description and the drawing. According to the invention, the features mentioned above and those detailed below can each be used individually or collectively in any desired, expedient combination. The embodiments shown and described are not to be understood as an exhaustive list, but rather have an exemplary character for the description of the invention.

character list

• 1 eine Arbeitsplatzanordnung mit einem Desinfektionsmodul, welches auf einer oberseitigen Fläche einer Arbeitsplatte eines Tisches verfahrbar ist, in einer schematischen Perspektivansicht;
• 2 das auf der Arbeitsplatte angeordnete Desinfektionsmodul der Arbeitsplatzanordnung von 1 in einer schematischen Seitenansicht;
• 3 das auf der Arbeitsplatte angeordnete Desinfektionsmodul der Arbeitsplatzanordnung von 1 in einer schematischen Schnittansicht;
• 4 eine Arbeitsplatzanordnung mit einem Desinfektionsmodul, welches auf einer oberseitigen Fläche einer Arbeitsplatte eines Tisches durch eine Führungseinrichtung geführt ist, in einer schematischen Aufsicht;
• 5 eine Arbeitsplatzanordnung mit einem Desinfektionsmodul, welches eine Desinfektionskammer zur Desinfektion eines Gegenstandes aufweist, in einer schematischen Perspektivansicht;
• 6 das Desinfektionsmodul der Arbeitsplatzanordnung von 5 in einer schematischen Schnittansicht;
• 7 eine erfindungsgemäße Arbeitsplatzanordnung mit einem Desinfektionsmodul und einer Arbeitsplatte, in welche ein Luftleitkanal integriert ist, durch den desinfizierte Luft von dem Desinfektionsmodul zu einem Benutzer der Arbeitsplatzanordnung geleitet werden kann, in einer schematischen Perspektivansicht;
• 8 die Arbeitsplatzanordnung von 7 in einer schematischen Seitenansicht.

The invention is shown in the drawing and is explained in more detail with reference to exemplary embodiments. Show it:

• 1 a workstation arrangement with a disinfection module, which can be moved on a top surface of a worktop of a table, in a schematic perspective view;
• 2 the disinfection module arranged on the worktop of the workplace arrangement from 1 in a schematic side view;
• 3 the disinfection module arranged on the worktop of the workplace arrangement from 1 in a schematic sectional view;
• 4 a workplace arrangement with a disinfection module, which is guided on a top surface of a worktop of a table by a guide device, in a schematic plan view;
• 5 a workstation arrangement with a disinfection module, which has a disinfection chamber for disinfecting an object, in a schematic perspective view;
• 6 the disinfection module of the workplace arrangement from 5 in a schematic sectional view;
• 7 a workplace arrangement according to the invention with a disinfection module and a worktop, in which an air duct is integrated, through which disinfected air can be directed from the disinfection module to a user of the workplace arrangement, in a schematic perspective view;
• 8th the workplace arrangement of 7 in a schematic side view.

1 shows a workstation arrangement 10. The workstation arrangement 10 has a disinfection module 12. FIG. The workstation arrangement 10 also has a worktop 14 . The worktop 14 is part of a table 16, such as a desk. The disinfection module 12 is arranged on a top surface 18 of the worktop 14 .

The disinfection module 12 has a housing 20 . The disinfection module 12 can be moved on the surface 18 . For this purpose, rollers 22, here in the form of wheels, are attached to the housing 20, see also 2 . About the disinfectant To move tion module 12 over the surface 18, a drive device 24 is provided. The drive device 24 is designed here with an electric motor on at least one of the rollers 22 .

The disinfection module 12 has a UV light source 26, see FIG 3 . The UV light source 26 can be, for example, a light-emitting diode (shown only in highly abstracted form here) for emitting UV-C radiation. The UV light source 26 can be surrounded by a mirror coating 27 .

To disinfect the surface 18, the disinfection module 12 is moved on the worktop 14 while the UV light source 26 emits UV radiation. The UV radiation exits the housing 20 through a light outlet 28 and then impinges on the surface 18 . The light outlet 28 is designed here as a light outlet opening 28a in the housing 20 .

A peripheral shield 30 may be attached to the housing 20 . Shield 30 may bridge a gap between housing 20 and surface 18 and abut surface 18 . Persons who are in the vicinity of the workplace arrangement 10 are thereby protected from UV radiation potentially reflected by the surface 18 . In the 1 and 2 the shield 30 is not shown in detail for the sake of clarity.

The disinfection module 12 has an air circulation device 32, see also 1 and 2 . The air circulation device 32 is used to convey air from the surroundings of the disinfection module 12 into the housing 20, to guide it past the UV light source 26 there and then to release it again into the surroundings. The air circulation device 32 can have a fan 34 . In the present case, a fan 34 is arranged on each of two opposite air inlet openings 36 of the housing 20 . In order to release the air disinfected by the UV radiation into the environment, the housing has at least one air outlet opening 38 . In the embodiment of the disinfection module 12 shown, a multiplicity of air outlet openings 38 are distributed on a top side 40 and on a front side 42 of the housing 20 . Air outlet openings can also be provided on a rear side 43 .

4 shows another workstation arrangement 10 with a disinfection module 12 and a worktop 14. The in 4 Workplace arrangement 10 shown essentially corresponds to that in FIGS 1 until 3 shown workplace arrangement 10. In this respect, reference is made to the preceding description.

The workstation arrangement 10 of 4 has a guide device 44 in addition to the components described above. The guide device 44 is designed here as a guide rail. The guide device 44 can be attached to the worktop 14 . The guide device 44 defines a direction of movement 46 of the disinfection module 12 when it moves on the surface 18.

The 5 and 6 show a third workstation arrangement 10 with a disinfection module 12 and a worktop 14. Here, too, the worktop 14 is part of a table 16, for example a desk. The disinfection module 12 is arranged on a top surface 18 of the worktop 14 .

Unlike those in the 1 until 3 4 is a housing 20 of the disinfection module 12 in the embodiment according to FIG 5 and 6 not elongated, but compact in design. In order to disinfect the entire surface 18, the disinfection module 12 can be moved along a meandering path 48 on the worktop 14. For this purpose, the disinfection module 12 has rollers 22 in the form of spherical rollers that can rotate in all directions. The rollers 22 can be driven via a drive device 24, not shown in detail, in order to move or rotate the disinfection module 12 in any direction on the surface 18.

A UV light source 26 is arranged inside the housing 20, see FIG 6 . When the surface 18 is disinfected, UV radiation emitted by the UV light source 26 exits the housing 20 through a light outlet 28 . The light outlet 28 is designed here as a light outlet window 28b.

The disinfection module 12 has an air circulation device 32 for the disinfection of (ambient) air. By means of fans 34 (cf 5 ) Air from the environment can be conveyed into the housing 20 through air inlet openings 36 . There the air is irradiated with UV radiation by the UV light source 26 . The air disinfected in this way then exits the housing 20 through air outlet openings 38 . In the illustrated embodiment, the air outlet openings 38 are distributed over a partial area of the housing 20 on the upper side. Alternatively or additionally, for example, air outlet openings could also be provided on the circumference of the housing 20 .

The disinfection module 12 also has a disinfection chamber 50 for receiving an object 52 to be disinfected. Toward the UV light source 26 is the disinfection chamber 50 is limited by a wall 53 that is transparent to UV radiation.

The housing 20 has a flap 54 for opening or closing the disinfection chamber 50 . When the flap 54 is open, the object 52 can be placed in the disinfection chamber 50 or removed from the disinfection chamber 50 . When the flap 54 is closed, the object 52 in the disinfection chamber 50 can be disinfected by exposure to UV radiation from the UV light source 26 . In principle, the UV light source 26 can only be operated when the flap 54 is closed. In order to direct UV radiation onto the object 52 from all sides, an inner side 56 of the flap 54 can be made reflective. Side wall sections of the disinfection chamber 50 can also be mirrored.

The in the disinfection module 12 according to the 5 and 6 The disinfection chamber 50 shown for an object 52 could also be compared to the disinfection modules 12 described above 1 until 3 and 4, may be provided.

The 7 and 8th show an inventive embodiment of a workstation arrangement 10 with a disinfection module 12 and a worktop 14. The worktop 14 is in turn part of a table 16, for example a desk. The disinfection module 12 is arranged on a top surface 18 of the worktop 14 .

That in the 7 and 8th The disinfection module 12 shown essentially corresponds in structure and function to that in FIGS 1 until 3 shown disinfection module 12. In this respect, reference is made to the above description; the differences are primarily explained below. Inside its housing 20, the disinfection module 12 has a UV light source 26, which is not shown in detail here. The disinfection module 12 can be moved transversely and along its main extension direction on the worktop 14 . In order to direct UV radiation onto the surface 18, the disinfection module 12 has a light outlet 28 in the form of a light outlet opening 28a (not shown in detail here, cf 3 ). Here, too, an air circulation device 32 includes fans 34 at air outlet openings 36 and a multiplicity of air outlet openings 38 . The air outlet openings 38 can be provided on a front side 42 of the disinfection module 12 .

The workstation arrangement 10 also has an air duct 58 here. The air duct 58 serves to conduct disinfected air from the disinfection module 12 to a user (not shown) of the workstation arrangement 10 . The air duct 58 runs here in sections below the worktop 14 and in sections within the worktop 14 (the latter is shown in 8th shown dashed).

The air duct 58 opens here into a multi-flow air outlet 60 on a front side 62 of the worktop 14. A user of the workstation arrangement 10 is typically located in the area of the air outlet 60 in front of the front side 62.

The disinfection module 12 is located in the 7 and 8th above an inlet section 64 of the air duct 58. In this position of the disinfection module 12, disinfection of (ambient) air takes place. The disinfected air is blown out on the one hand through the air outlet openings 38 in the housing 20 of the disinfection module 12 . On the other hand, the disinfected air is introduced into the air duct 58 through the light outlet opening 28a. The air duct 58 guides the disinfected air to the user on the front 62.

In summary, the present invention relates to the use of a UV light source 26 for surface disinfection and air disinfection, and a disinfection module 12 that enables such use. The UV light source 26 is arranged in a housing 20 of the disinfection module 12 . Air can be guided past the UV light source 26 by means of an air circulation device 32 and released into an environment after exposure to UV radiation. For surface disinfection, the disinfection module 12 has a drive device 24, by means of which the UV light source 26 can be moved over the surface 18 to be disinfected.

Reference List

10

workplace arrangement

12

disinfection module

14

countertop

16

table

18

Surface

20

Housing

22

roll

24

drive device

26

UV light source

27

mirroring

28

light outlet

28a

light outlet opening

28b

light outlet window

30

shielding

32

air circulation device

34

fan

36

air intake vents

38

air outlet opening

40

top

42

front

43

back

44

guide device

46

direction of movement

48

Rail

50

disinfection chamber

52

Object

53

wall

54

flap

56

inside

58

air duct

60

air outlet

62

front

64

inlet section

Claims (14)

Workplace arrangement (10) having a worktop (14) and a disinfection module (12) which can be arranged on a top surface (18) of the worktop (14), the disinfection module (12) having the following: - a surface (18) displaceable housing (20), - a drive device (24) for moving the housing (20) on the surface (18), - an air circulation device (32) for guiding air through the housing (20), - an in the housing (20 ) UV light source (26) arranged for irradiating the surface (18) and the air guided through the housing (20) with UV radiation, preferably UV-C radiation, characterized in that an air duct ( 58) is provided in order to conduct disinfected air from the disinfection module (12) to a user of the workstation arrangement (10). Workplace arrangement (10) after claim 1 , characterized in that the disinfection module (12) has rollers (22) for moving the disinfection module (12) on the surface (18). Workplace arrangement (10) after claim 2 , characterized in that at least one of the rollers (22) can be driven by the drive device (24). Work station arrangement (10) according to one of the preceding claims, characterized in that the air circulation device (32) has a fan (34) which is preferably arranged at an air inlet opening (36) of the housing (20). Workstation arrangement (10) according to one of the preceding claims, characterized in that the housing (20) has a large number of air outlet openings (38). Work station arrangement (10) according to one of the preceding claims, characterized in that the housing (20) has a light outlet (28) which enables direct irradiation of the surface (18) by means of the UV light source (26). Workstation arrangement (10) according to one of the preceding claims, characterized in that the housing (20) is mirrored on the inside at least in sections. Workstation arrangement (10) according to one of the preceding claims, characterized in that the housing (20) has a shield (30) for contact with the surface (18). Work station arrangement (10) according to one of the preceding claims, characterized in that a disinfection chamber (50) for receiving an object (52) to be disinfected is formed in the housing (20). Workplace arrangement (10) after claim 9 , characterized in that the disinfection chamber (50) towards the UV light source (26) has a wall (53) which is permeable to UV radiation. Workplace arrangement (10) after claim 9 or 10 , characterized in that the housing (20) has a flap (54) for opening and closing the disinfection chamber (50). Workstation arrangement (10) according to one of the preceding claims, characterized in that a guide device (44) for guiding the disinfection module (12) over the surface (18) is provided on the worktop (14). Workstation arrangement (10) according to one of the preceding claims, characterized in that the air duct (58) runs through the worktop (14) at least in sections. Workstation arrangement (10) according to one of the preceding claims, characterized in that the worktop (14) has an inlet section (64) for admitting disinfected air from the disinfection module (12) into the air duct (58).

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