HANDRAIL DISINFECTING DEVICE FOR PASSENGER TRANSPORT INSTALLATIONS

Abstract

The disclosure relates to a handrail disinfecting device for a handrail of a passenger transport installation. The handrail disinfecting device has a plurality of light-emitting diodes that can emit germicidal electromagnetic radiation in the region of their light cone. A pass-through segment of the handrail disinfecting device is divided into at least two sectors and has a carrier having planes that are arranged in the sectors. The light-emitting diodes are arranged on the carrier such that they are oriented according to the planes. In one of the sectors, there are two planes that are arranged in parallel with the longitudinal extension of the pass-through segment and so as to be mutually inclined at an angle of 100° to 160°.

Claims

1-15. (canceled)

16. A handrail disinfecting device, comprising: at least one housing; and a plurality of light-emitting diodes having a main light cone axis, which light-emitting diodes can emit germicidal electromagnetic radiation in the region of their light cone, wherein the housing has an entry side and an exit side opposite the entry side for a continuous handrail of a passenger transport installation, wherein a pass-through segment for the handrail, which segment is divided into at least two sectors, is present in the housing between the entry side and the exit side; wherein the sectors are arranged one behind the other in the longitudinal extension of the pass-through segment; wherein at least one light-emitting diode is arranged in the first sector, the main light cone axis of which diode is oriented substantially orthogonally to a first plane; and wherein at least two light-emitting diodes are arranged in the second sector, wherein the main light cone axis of at least one light-emitting diode is oriented substantially orthogonally to a second plane and the main light cone axis of at least one light-emitting diode is oriented substantially orthogonally to a third plane, and wherein the second plane and the third plane are arranged in parallel with the longitudinal extension of the pass-through segment and so as to be mutually inclined at an angle of 100° to 160°, and wherein the handrail disinfecting device has at least one guide roller, by means of which guide roller a handrail of a passenger transport installation can be guided through the housing in the pass-through segment in a defined position in relation to the light-emitting diodes.

17. The handrail disinfecting device according to claim 16, wherein at least one guide roller is arranged on the entry side and/or on the exit side.

18. The handrail disinfecting device according to claim 16, wherein at least one guide roller is arranged inside the housing.

19. The handrail disinfecting device according to claim 16, wherein the inclination of the second plane relative to the first plane is the same as the inclination of the third plane relative to the first plane.

20. The handrail disinfecting device according to claim 16, wherein a third sector is defined in the pass-through segment, in which sector at least one light-emitting diode is arranged, the main light cone axis of which is oriented orthogonally to a fourth plane, wherein the second sector is arranged between the first and the third sector, and the fourth plane is arranged in parallel with the first plane.

21. The handrail disinfecting device according to any of claim 16, wherein at least three light-emitting diodes are arranged in each plane, and wherein their main light cone axes are oriented in parallel with one another in each plane.

22. The handrail disinfecting device according to claim 21, wherein five light-emitting diodes are arranged in the first plane, three light-emitting diodes each are arranged in the second and the third plane and four light-emitting diodes are arranged in the fourth plane, if present.

23. The handrail disinfecting device according to claim 16, wherein the housing is comprises a U-shaped main housing part and a cover spanning the open side of the main housing part.

24. The handrail disinfecting device according to claim 16, wherein said handrail disinfecting device comprises a carrier, which is arranged in the housing below the pass-through segment with respect to the intended installation position of the handrail disinfecting device, on which carrier all planes present are formed, and wherein the light-emitting diodes are fastened to said planes.

25. The handrail disinfecting device according to claim 16, wherein at least one reflector which is directed toward the pass-through segment and is intended for reflecting the radiation is arranged in the housing.

26. The handrail disinfecting device according to claim 16, wherein an axis of rotation of the guide roller is arranged in parallel with the first plane and orthogonally to the pass-through segment.

27. The handrail disinfecting device according to claim 16, wherein a tread contour of the guide roller corresponds to an outer surface contour of the handrail to be guided.

28. The handrail disinfecting device according to any of claim 16, wherein the angle of the mutually inclined second and third plane is matched to the spectral composition of the germicidal electromagnetic radiation of the light-emitting diodes and the material surface of the handrail.

29. A passenger transport installation configured as an escalator or a moving walkway, comprising at least one balustrade that comprises at least one circulating handrail, wherein the passenger transport installation has at least one handrail disinfecting device according to claim 16 for each circulating handrail.

30. The passenger transport installation according to claim 29, wherein the balustrade comprises a balustrade base in which a returning run of the handrail is guided so as to be concealed from the users of the passenger transport installation, and wherein the handrail disinfecting device is installed in the balustrade base of the balustrade.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Embodiments of the disclosure will be described below with reference to the accompanying drawings, with neither the drawings nor the description being intended to be interpreted as limiting the disclosure. Furthermore, the same reference signs are used for elements that are identical or have the same effect. In the drawings:

[0027] FIG. 1 is a simplified view of a passenger transport installation designed as an escalator and having a handrail disinfecting device;

[0028] FIG. 2 is a cross section along the line A-A through the passenger transport installation of FIG. 1;

[0029] FIG. 3 is a side view of the handrail disinfecting device shown in FIGS. 1 and 2;

[0030] FIG. 4 is a plan view of the handrail disinfecting device of FIGS. 1 to 3;

[0031] FIG. 5 is a three-dimensional view of the handrail disinfecting device shown in FIGS. 1 to 4 with a guided-through portion of a handrail of the passenger transport installation;

[0032] FIG. 6 is a three-dimensional view of a carrier arranged in the handrail disinfecting device of FIGS. 1 to 5 and equipped with light-emitting diodes;

[0033] FIG. 7 is a cross section of the handrail disinfecting device shown in FIGS. 1 to 6 along the line B-B shown in FIG. 4;

[0034] FIG. 8 shows a possible development of the handrail disinfecting device shown in FIGS. 1 to 7 with guide rollers on its entry side and exit side.

DETAILED DESCRIPTION

[0035] FIG. 1 shows a simplified view of a passenger transport installation 1 having a supporting structure 11 designed as a framework. The passenger transport installation 1 designed as an escalator connects a lower level E1 with an upper level E2 of a building 5. The passenger transport installation 1 can be entered and exited again via access regions 3. A circulating step belt 9 is arranged in the supporting structure 11, which step belt is deflected in the upper level E2 and in the lower level E1 and thus has a leading portion and a returning portion. For the sake of a better overview, the detailed representation of the returning portion, as well as a detailed representation of frames, guide rails, and rail blocks, has been omitted. The passenger transport installation 1 also has two balustrades 15 that extend along each longitudinal side of the step belt 9, with only the balustrade 15 arranged in the foreground in the viewing plane being visible in FIG. 1. A handrail 17 is arranged in a circulating manner on each balustrade 15, the returning run of which handrail is guided in a balustrade base 13. This balustrade base 13 connects the balustrade 15 to the supporting structure 11. In other words, the returning run of the handrail 17 is concealed from the users of the passenger transport installation 1 and is guided in the balustrade base 13.

[0036] Furthermore, the passenger transport installation 1 has at least one handrail disinfecting device 41 for each circulating handrail 17. Said device is also installed in the balustrade base 13 of the balustrade 15 and thus concealed from the users of the passenger transport installation 1.

[0037] FIG. 2 shows a cross section through the passenger transport installation 1 according to FIG. 1 along the line A-A. In this cross section, both the leading and the returning portion of the step belt 9 can be seen. The step belt 9 is guided on guide rails 23 within the supporting structure 11. A balustrade 15 and a balustrade base 13 are arranged to the left and right of the leading portion of the step belt 9, which portion is arranged at the top when the passenger transport installation 1 is installed as intended. Clamping devices 29 are provided within the balustrade base 13, concealed by cladding panels 25, 27, which serve as clamping receptacles for the individual balustrade panels 33. In this case, the balustrade panel 33 is clamped in a stationary manner at its lower end in at least one of the clamping devices 29. The clamping devices 29 are arranged along the longitudinal extension of the passenger transport installation 1 within the balustrade base 13 on the supporting structure 11. Below the clamping devices 29, a handrail disinfecting device 41 is provided for each handrail 17 arranged in a circulating manner on the balustrade 15, which handrail disinfecting device is equipped with light-emitting diodes 43 that can emit germicidal electromagnetic radiation in the region of their light cone.

[0038] Because the returning run of the handrail 17 is also guided in the balustrade base 13, it is advantageous to arrange the handrail disinfecting device 41 in the balustrade base 13 and to guide the returning run through said handrail disinfecting device there. It can thereby be ensured that no harmful electromagnetic radiation can reach the users of the passenger transport installation 1 under any circumstances.

[0039] FIGS. 3 to 7 all show the same handrail disinfecting device 41 already shown in FIGS. 1 and 2, or at least parts thereof. Therefore, these figures are described together below. More precisely, FIG. 3 shows the handrail disinfecting device 41 in a side view, FIG. 4 in a plan view, FIG. 5 in a three-dimensional view; FIG. 6 is a three-dimensional view of a carrier 49 arranged in the handrail disinfecting device 41 and FIG. 7 is a cross section through the handrail disinfecting device 41 along the line B-B shown in FIG. 4.

[0040] The handrail disinfecting device 41 shown in these figures, FIGS. 3 to 7, comprises a housing 51 and a plurality of light-emitting diodes 43. Due to their design, the light-emitting diodes 43 have a light cone 45, wherein said light-emitting diodes can emit germicidal electromagnetic radiation in the region of their light cone 45. The spatial orientation of the light cone 45 is represented by a main light cone axis 47, which is also the axis of rotational symmetry of the light cone 45. It should also be noted that the light cones 45 shown have a circular contour that could be regarded as the end face. However, it is clear that this contour is not an end face, but rather a light cone cross section at any cone height in order to be able to visualize the light cone better and should therefore not constitute a limitation of the propagation of electromagnetic radiation.

[0041] The housing 51 has an entry side 53 and an exit side 55 opposite the entry side 53 for a continuous handrail 17 of a passenger transport installation 1. Logically, the designations for the entry side 53 and the exit side 55 depend on the direction of movement X of the handrail 17 and change according to said direction of movement. In the housing 51, there is a pass-through segment 57 for the handrail 17 between the entry side 53 and the exit side 55. This pass-through segment 57 is divided into at least two sectors. In the specific embodiment of FIGS. 3 to 7, the pass-through segment 57 is divided into three sectors 61, 62, 63. The sectors 61, 62, 63 are arranged one behind the other in the longitudinal extension of the pass-through segment 57 and are designed to be distinguishable from one another. It should also be noted that the boundaries of the sectors 61, 62, 63 do not necessarily have to be based on orthogonal sectional planes such as the sectional plane B-B shown in FIG. 4. The sector boundary 65 with the double dot-dash line in FIG. 4 between the first sector 61 and the second sector 62 is mentioned as an example, which boundary is adapted to the light-emitting diodes 43 arranged therein.

[0042] At least one light-emitting diode 43 is arranged in the first sector 61 in such a way that its main light cone axis 47 is oriented substantially orthogonally to a first plane 71. In the specific embodiment, a total of five light-emitting diodes are arranged in the first sector 61, the main light cone axes 47 of which diodes are arranged substantially orthogonally to the first plane 71 and therefore substantially in parallel with one another.

[0043] At least two light-emitting diodes 43 are arranged in the second sector 62 in such a way that the main light cone axis 47 of at least one of said light-emitting diodes 43 is oriented substantially orthogonally to a second plane 72 and the main light cone axis 47 of at least one of said light-emitting diodes 43 is oriented substantially orthogonally to a third plane 73. In the specific embodiment, a total of six light-emitting diodes 43 are arranged in the second sector 62, wherein the main light cone axes 47 of three of said light-emitting diodes 43 are arranged substantially orthogonally to the second plane 71 or substantially in parallel with one another, and the main light cone axes 47 of the other three of said light-emitting diodes 43 are arranged substantially orthogonally to the third plane 73 or substantially in parallel with one another. Furthermore, the second plane 72 and the third plane 73 are arranged in parallel with the longitudinal extension of the pass-through segment 57 and so as to be mutually inclined at an angle α (see FIG. 7). With an obtuse angle α of 100° to 160°, particularly good results could be achieved by the disinfecting effect of the handrail disinfecting device 41. In particular, the angle α of the mutually inclined second and third plane 72, 73 can be matched to the spectral composition of the germicidal electromagnetic radiation and the material surface of the handrail 17.

[0044] Furthermore, two guide rollers 85 are arranged in the housing 51 such that a handrail 17 guided through is supported by the guide rollers 85. As a result, the surface of the handrail 17 is irradiated as directly as possible by the light-emitting diodes 43 arranged on the planes 71, 72, 73 by directing the main light cone axes of said diodes as orthogonally as possible relative to the surface of the handrail 17. In order to achieve this, an axis of rotation of the guide roller 85 is preferably arranged in parallel with the first plane 71 and orthogonally to the pass-through segment 57.

[0045] FIG. 7 also shows how the irradiation of problem regions such as undercut cracks 35 and edges 39 of dirt particles 37 can be improved by the light-emitting diodes 43 arranged in the second plane 72 and third plane 73.

[0046] At least one light-emitting diode 43 is arranged in the third sector 63 of the pass-through segment 57, the main light cone axis 47 of which diode is oriented substantially orthogonally to a fourth plane 74. In the specific embodiment, a total of four light-emitting diodes 43 are arranged in the third sector 63, the main light cone axes 47 of which diodes are arranged substantially orthogonally to the fourth plane 74 or substantially in parallel with one another. In this case, the second sector 62 is arranged between the first sector 61 and the third sector 63, and the fourth plane 74 is arranged in parallel with the first plane 71.

[0047] The arrangement of the main light cone axes 47 is therefore “substantially” orthogonal or parallel because slight deviations of up to 3° from parallelism are possible due to production or for intentional reasons. As can be seen in particular from FIG. 7, the inclination β of the second plane 72 to the first plane 71 can be the same as the inclination γ of the third plane 73 to the first plane 71.

[0048] The housing 51 of the handrail disinfecting device 41 is designed in two parts. Said housing has a U-shaped main housing part 77 and a cover 79 spanning the open side of the main housing part 77. As a result, the light-emitting diodes 43 arranged in the housing 51 can be replaced more easily and the pass-through segment 57 can be cleaned better.

[0049] Furthermore, when a handrail 17 is replaced, it can more easily be removed from the handrail disinfecting device 41 or inserted into the pass-through segment 57 thereof without any risk of damage to the light-emitting diodes 43.

[0050] As already mentioned above, the handrail disinfecting device 41 can comprise a carrier 49 (see in particular FIG. 6) that is arranged in the housing 51 below the pass-through segment 57 with respect to the intended installation position of the handrail disinfecting device 41 in a passenger transport installation 1. In the present embodiment, the carrier 49 is fastened in the main housing part 77. All planes 71, 72, 73, 74 present are preferably formed on this carrier 49. The light-emitting diodes 43 are fastened to said planes. In this context, it is irrelevant whether the light-emitting diodes 43 are fastened directly to the carrier 49 or whether, for example, there is a circuit board 59 fitted with the light-emitting diodes 43 for each plane 71, 72, 73, 74, which circuit board is fastened to the relevant plane 71, 72, 73, 74 assigned thereto.

[0051] Furthermore, at least one reflector 81 (clearly visible in FIGS. 3 and 7) which is directed toward the pass-through segment 57 and is intended for reflecting the radiation emitted by the light-emitting diodes 43 can be arranged in the housing 51. In the present embodiment, the reflector 81 is fastened in the cover 79.

[0052] As already mentioned, the division into a plurality of sectors 61, 62, 63 and in these differently arranged planes 71, 72, 73, 74 is intended to achieve the most comprehensive possible irradiation of the surface of the handrail 17. Accordingly, it is also advantageous if said surface or the handrail 17 is always guided through the pass-through segment 57 at equal distances from the planes 71, 72, 73, 74.

[0053] As shown in FIG. 8, at least one guide roller 83 can therefore be arranged on the entry side 53 and on the exit side 55 of the handrail disinfecting device 41. Said guide rollers 83 allow a handrail 17 of a passenger transport installation 1 to be guided through the housing 51 in the pass-through segment 57 in a defined position.

[0054] As shown in FIG. 8, handrails 17 for passenger transport installations 1 usually have a C-shaped cross section, with the most touched and therefore most contaminated region being its broad rear surface 31. Said broad rear surface is preferably supported by the guide roller 83 and is irradiated as directly as possible by the light-emitting diodes 43 arranged on the first plane 71 by directing the main light cone axes 47 of said diodes as orthogonally as possible relative to the rear surface 31. In order to achieve this, the axis of rotation 85 of the guide roller 83 is arranged in parallel with the first plane 71 and orthogonally to the pass-through segment 57.

[0055] Furthermore, a tread contour 87 of the guide roller 83 can correspond to an outer surface contour 89 of the handrail 17 to be guided. As a result, the handrail 17 is not only guided with more precise positioning through the housing 51, but the guide roller 83 having a correspondingly adapted tread contour 87 also serves as radiation protection because hardly any electromagnetic radiation can escape from the housing 51 through the narrow gap between the handrail 17 and the tread contour 87.

[0056] Because the germicidal electromagnetic radiation emitted by the light-emitting diodes 43 is in the ultraviolet light range, correct operation of the handrail disinfecting device 41 can hardly be visually recognized, and certainly not when said handrail disinfecting device is installed in the balustrade base 13, hidden from the users. In order to display the operating status of the handrail disinfecting device 41, a suitable display device 91 can therefore be provided, which can then be arranged, for example, in the access regions 3 (see FIG. 1) such that they are clearly visible to the users.

[0057] As shown in FIG. 1, the step belt 9 and the handrails 17 are driven by a drive unit 7. The drive unit 7 includes a drive motor 21 that is controlled by a drive controller 19 of the passenger transport installation 1. Because of the speed signal that is generated by the drive controller 19 and sent to a converter (not shown) in order to correspondingly control the drive motor 21, the current speed of the handrail 17 is available in the drive controller 19 at any time. The drive controller 19 can now also be configured to operate the handrail disinfecting device 41. Specifically, the light-emitting diodes 43 of the individual sectors 61, 62, 63 can be controlled according to the speed signal from the drive controller 19 in order to minimize the energy consumption of the light-emitting diodes 43 and the damaging effect of the germicidal electromagnetic radiation on the material of the handrail 17 while always maintaining an optimal disinfecting effect.

[0058] Although FIGS. 1 to 8 show different aspects of the present disclosure on the basis of a passenger transport installation 1 which is designed as an escalator and is intended to connect floors E1, E2 that are vertically spaced apart from one another, it is obvious that the handrail disinfecting device 41 and the corresponding method steps described can also be used for obliquely arranged moving walkways or horizontally arranged moving walkways. In addition, further sectors 61, 62, 63 having at least one plane 71, 72, 73 can be arranged upstream of the first sector 61 and/or downstream of the third sector 63. Of course, a plurality of handrail disinfecting devices 41 can also be arranged one behind the other in the balustrade base 13 for each handrail 17.

[0059] Finally, it should be noted that terms such as “comprising,” “having,” etc., do not preclude other elements or steps and terms such as “a” or “an” do not preclude a plurality. Furthermore, it should be noted that features or steps that have been described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the disclosure or claims should not be considered to be limiting.