UVC sterilization device suitable for elevator handrail

Abstract

A UVC sterilization device suitable for an elevator handrail comprises a bottom plate, a lamp tube assembly is arranged on the left portion of the upper side of the bottom plate, the lamp tube assembly comprises a horizontally-arranged rectangular-frame-shaped UVC lamp tube, the outer surface of the UVC lamp tube is provided with a nanoscale titanium dioxide coating, the UVC lamp tube is sleeved with a magnetic ring, an insulation cushion layer is arranged between the magnetic ring and the UVC lamp tube, and an induction coil is arranged on the magnetic ring. A mounting seat is arranged at the position, corresponding to the magnetic rings, above the bottom plate, the mounting seat comprises a base and an upper cover, a circular cavity is formed between the base and the upper cover, each magnetic ring is matched and fixed with the circular cavity at the corresponding position, the upper cover is hinged to one side of the base in the length direction, and lug plates are arranged on the other side of the base and are fastened and connected through bolts; an electric control unit is arranged on the upper side of the bottom plate and corresponds to the side of the UVC lamp tube, and all the induction coils and the UVC lamp tube are electrically connected with the electric control unit. The escalator handrail disinfection device can be used for disinfecting an escalator handrail on an escalator, and is long in service life and good in sterilization effect.

Description

Technical Field

[0001] The utility model relates to a UVC sterilization device suitable for an elevator handrail. Background Technique

[0002] Sterilization lamps usually refer to ultraviolet sterilization lamps, which are lamps that use the sterilization effect of ultraviolet rays for sterilization and disinfection. The ultraviolet disinfection lamp emits short-wave sterilization ultraviolet rays with a wavelength of 253.7 nm. The sterilization ability of this band of ultraviolet rays is the strongest and can be used for the sterilization and disinfection of water, air, clothes, etc. For details, please refer to Chinese Patent CN102354652A.

[0003] The electromagnetic induction UVC disinfection machine is a new generation of sterilization light source that combines electronic technology and light sources. It uses the high frequency generated by an electronic ballast, and an electromagnetic generator composed of a metal coil magnetic ring creates a magnetic field around a quartz glass tube (containing gas). The discharge path caused by the coil forms a closed circuit, thereby causing the accelerated movement of free electrons. These free electrons collide with mercury atoms to excite the plasma. Because the activated plasma retreats from a high-energy state to a low-energy state, UVC ultraviolet rays can be emitted through the quartz tube with high light transmittance.

[0004] Ultraviolet rays contain ultraviolet light in three bands: UVA, UVB, and UVC:

[0005] UVA (315 - 400 nm), also known as long-wave violet light;

[0006] UVB (280 - 315 nm), also known as medium-wave violet light;

[0007] UVC (200 - 280 nm), also known as short-wave violet light or sterilization violet light.

[0008] Most ultraviolet sterilization lamps use this UVC band.

[0009] All microorganisms, bacteria, and viruses are composed of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Cells have the largest absorption of ultraviolet rays (UVC ultraviolet rays) with wavelengths between 250 - 285 nm. The absorbed ultraviolet rays can act on the cell genetic material (DNA) to cause photochemical effects. The energy of ultraviolet photons is absorbed by the base pairs in DNA, causing mutations in the viral genetic material, making the bacteria die immediately or unable to reproduce offspring, achieving the purpose of sterilization. Since the electromagnetic induction lamp does not use traditional filaments or electrodes in the above working process, it avoids the electrode loss problem of traditional light sources (the service life of the lamp can reach 60,000 hours, which is 10 times that of traditional sterilization lamps), so it has the characteristic of long life, thereby improving the life of the entire sterilization system.

[0010] The disadvantages of existing germicidal lamps are as follows: The working surface of traditional germicidal lamp tubes is small, so the ultraviolet intensity is relatively low, generally 4800 mw / cm 2 . Due to the technological problems of traditional germicidal lamp tubes, the maximum power of a single lamp tube is 150 W, and the volume is relatively large, which is not convenient for installation and use. In addition, there are filaments in some germicidal lamp tubes. During the working process, the high temperature generated by the lamp tube and the filaments are prone to oxidation, resulting in the lamp tube turning black, thus affecting the service life of the lamp tube. The service life of traditional lamp tubes is generally 5000 h. Content of the Utility Model

[0011] The technical problem to be solved by the present utility model is to provide a UVC germicidal device applicable to elevator handrails, which can be used to disinfect elevator handrails on escalators, and has a long service life and good germicidal effect.

[0012] To solve the above technical problem, the present utility model provides a UVC germicidal device applicable to elevator handrails, including a long strip-shaped bottom plate arranged horizontally. The length direction of the bottom plate runs from left to right. On the upper left part of the bottom plate, there is a lamp tube assembly. The lamp tube assembly includes a UVC lamp tube arranged horizontally. The UVC lamp tube is in the shape of a rectangular frame and has a circular cross-section. A titanium dioxide coating is provided on the outer surface of the UVC lamp tube. At least two magnetic rings are sleeved on the UVC lamp tube. An insulating cushion layer is provided between the magnetic rings and the UVC lamp tube. Induction coils are provided on the magnetic rings. At the position above the bottom plate, mounting seats are provided corresponding to each magnetic ring. The mounting seat includes a semi-circular arc-shaped base with an upward opening. The size of the base matches that of the magnetic ring. On the upper side of the base, there is a semi-circular arc-shaped upper cover with a downward opening that matches the base. A circular chamber is formed between the base and the upper cover. Each magnetic ring is fixedly fitted with the corresponding circular chamber. The upper cover is hinged to one side in the length direction of the base. Ear plates are provided on both the other side in the length direction of the upper cover and the base, and they are fixedly connected by bolts passing through the two ear plates. On the upper side of the bottom plate, an electronic control unit is provided beside the UVC lamp tube. All the induction coils and the UVC lamp tube are electrically connected to the electronic control unit.

[0013] For the sake of simplicity in explaining the problem, hereinafter, a UVC germicidal device applicable to elevator handrails described in the present utility model is simply referred to as this device.

[0014] Usage method and advantages of this device: This device is placed inside the handrail box of the escalator. It fixedly irradiates the handrail that is driven cyclically as the elevator operates. As the elevator runs, the handrail of the escalator is irradiated cyclically to achieve the purpose of disinfection. There is no filament in the lamp tube of this device. It has a high UVC conversion efficiency and a long service life. It adopts the photocatalyst technology, and the surface of the lamp tube is electrostatically sprayed with nano-level titanium dioxide. When the ultrafine particles receive ultraviolet irradiation with a wavelength of 254 nm, electrons, namely photo-generated carriers, are excited and generated inside due to the absorption of light energy. Then they quickly migrate to the surface of the elevator belt and activate the adsorbed oxygen and moisture to produce active free hydroxyl radicals (·OH) and active oxygen (·O). When viruses and bacteria adsorb on the surface, a linked degradation reaction will occur. The photocatalyst and UVC ultraviolet rays "actively" capture bacteria and viruses in a dual manner, and can fully intercept bacteria, viruses or smaller particles with a diameter less than 1 μm.

[0015] In addition, a magnetic induction triggering device can be developed to trigger the start of this device by monitoring the movement of the step wheel. There is no need to connect to the escalator control circuit, and the ultraviolet disinfection device can be synchronized with the escalator. This not only ensures the safety of the equipment, but also can be adapted to escalators of multiple brands of the group company.

[0016] To achieve better use effects of this device, its preferred solutions are as follows:

[0017] Preferably, a reflective coating is provided on the upper side of the bottom plate.

[0018] The UVC lamp tube emits light circumferentially. The reflective coating can reflect the light irradiated downward by the UVC lamp tube upward, increasing the light intensity above this device and enhancing the disinfection effect.

[0019] Preferably, a cover shell matching the bottom plate is provided above the bottom plate. The UVC lamp tube, magnetic ring, mounting seat and electronic control unit above the bottom plate are all located inside the cover shell, and several closely arranged hollow openings are provided on the cover shell.

[0020] The cover shell can protect the UVC lamp tube, magnetic ring, electronic control unit, etc. from being damaged by external force extrusion, and the closely arranged hollow openings on the cover shell can ensure sufficient light transmission.

[0021] Preferably, condensing plates extending upward are provided at both edges of the bottom plate in the width direction, and the upper sides of the two condensing plates are inclined outward away from each other along the width direction of the bottom plate.

[0022] Because the width of the handrail of the escalator is limited, the condensing plates can further condense the light, concentrate the light emitted by the UVC lamp tube near the handrail, and increase the disinfection efficiency. Description of the Drawings

[0023] Figure 1 It is a top view of this device.

[0024] Figure 2 This is another top view of the device (the housing is not shown).

[0025] Figure 3 This is the front view of the housing in the device.

[0026] Figure 4 This is the front view of the device (the housing and the condenser plate are not shown).

[0027] Figure 5 This is the side view of the device. Detailed implementation mode

[0028] Refer to Figures 1 - 5 , a UVC sterilization device applicable to an elevator handrail, which includes a long strip-shaped bottom plate 1 arranged horizontally. The length direction of the bottom plate 1 is from left to right. A lamp tube assembly is provided at the left part on the upper side of the bottom plate 1. The lamp tube assembly includes a UVC lamp tube 2 arranged horizontally. The UVC lamp tube 2 is in the shape of a rectangular frame and has a circular cross-section. A nano-level titanium dioxide coating is provided on the outer surface of the UVC lamp tube 2. Two magnetic rings 3 are sleeved on the UVC lamp tube 2. An insulating cushion layer 31 is provided between the magnetic ring 3 and the UVC lamp tube 2. An induction coil 32 is provided on the magnetic ring 3. Mounting seats 4 are provided above the bottom plate 1 corresponding to each magnetic ring 3. The mounting seat 4 includes a semi-circular arc-shaped base 41 with an upward opening. The size of the base 41 matches that of the magnetic ring 3. A semi-circular arc-shaped upper cover 42 with a downward opening and matching the base 41 is provided on the upper side of the base 41. A circular chamber is formed between the base 41 and the upper cover 42. Each magnetic ring 3 is fixedly fitted with the corresponding circular chamber. The upper cover 42 is hinged to one side in the length direction of the base 41. Ear plates 43 are provided on both sides in the length direction of the upper cover 42 and the base 41, and are tightly connected by a bolt 44 passing through the two ear plates 43. An electronic control unit 5 is provided on the upper side of the bottom plate 1 corresponding to the side of the UVC lamp tube 2. All the induction coils 32 and the UVC lamp tube 2 are electrically connected to the electronic control unit 5.

[0029] The upper side surface of the bottom plate 1 is provided with a reflective coating.

[0030] A housing 6 matching the bottom plate 1 is provided above the bottom plate 1. The UVC lamp tube 2, the magnetic rings 3, the mounting seats 4 and the electronic control unit 5 above the bottom plate 1 are all located inside the housing 6. A number of closely arranged hollow holes 61 are provided on the housing 6.

[0031] Condenser plates 7 extending upward are provided on both side edges in the width direction of the bottom plate 1. The upper sides of the two condenser plates 7 are inclined outward away from each other along the width direction of the bottom plate 1.

[0032] Usage method and advantages of this device: This device is fixed inside the handrail box of the escalator to irradiate the handrail that is driven cyclically with the operation of the elevator. As the elevator runs, the handrail of the escalator is irradiated cyclically to achieve the purpose of sterilization. There is no filament in the lamp tube of this device. It has a high UVC conversion efficiency and a long service life. It adopts photocatalyst technology, and the surface of the lamp tube is electrostatically sprayed with nano-level titanium dioxide. When the ultrafine particles receive ultraviolet light with a wavelength of 254 nm, electrons, that is, photo-generated carriers, are excited and generated inside due to the absorption of light energy. Then they quickly migrate to the surface of the elevator belt and activate the adsorbed oxygen and moisture to produce active free hydroxyl radicals (·OH) and active oxygen (·O). When viruses and bacteria adsorb on the surface, a linked degradation reaction will occur. The photocatalyst and UVC ultraviolet light "actively" capture bacteria and viruses doubly, and can fully intercept bacteria, viruses or smaller particles with a diameter less than 1 μm.

[0033] The UVC lamp tube 2 emits light circumferentially. The reflective coating can reflect the light irradiated downward by the UVC lamp tube 2 upward, increasing the light intensity above this device and enhancing the sterilization effect.

[0034] The housing 6 can protect the UVC lamp tube 2, the magnetic ring 3, the electronic control unit 5, etc. from being damaged by external force extrusion. The densely arranged hollow-outs 61 on the housing 6 can ensure sufficient light transmission.

[0035] Because the width of the handrail of the escalator is limited, the condenser plate 7 can further condense the light, concentrate the light emitted by the UVC lamp tube 2 near the handrail, and increase the sterilization efficiency.

Claims

1. A UVC sterilization device suitable for elevator handrails, characterized in that: The invention comprises a horizontally arranged long strip bottom plate, the length direction of the bottom plate is left-right, a lamp tube assembly is arranged on the upper left part of the bottom plate, the lamp tube assembly comprises a horizontally arranged UVC lamp tube, the UVC lamp tube is in a rectangular frame shape, and the cross section is circular, the outer surface of the UVC lamp tube is provided with a titanium dioxide coating, at least two magnetic rings are sleeved on the UVC lamp tube, an insulating cushion layer is provided between the magnetic ring and the UVC lamp tube, an induction coil is provided on the magnetic ring, and a mounting seat is provided at a position above the bottom plate corresponding to each magnetic ring, and the mounting seat comprises an opening A semicircular base with an upward opening, the size of the base matches the magnetic ring, a semicircular upper cover with an opening downward that matches the base is provided on the upper side of the base, a circular chamber is formed between the base and the upper cover, each magnetic ring is fixed with the circular chamber at the corresponding position, the upper cover is hinged to one side of the base in the length direction, and ear plates are provided on the other side of the upper cover and are fastened by bolts passing through the two ear plates, an electric control unit is provided on the upper side of the bottom plate corresponding to the side of the UVC lamp tube, and all induction coils and UVC lamp tubes are electrically connected to the electric control unit.

2. A UVC sterilization device suitable for elevator handrails according to claim 1, characterized in that: A reflective coating is provided on the side surface of the bottom plate.

3. A UVC sterilization device suitable for elevator handrails according to claim 1, characterized in that: A cover shell matching the bottom plate is arranged above the bottom plate, and the UVC lamp tube, magnetic ring, mounting seat and electric control unit above the bottom plate are all located in the cover shell, and a plurality of closely arranged hollows are arranged on the cover shell.

4. A UVC sterilization device suitable for elevator handrails according to claim 1, characterized in that: The edges of both sides of the bottom plate in the width direction are provided with light collecting plates extending upwards, and the upper sides of the two light collecting plates are inclined away from the outer sides in the width direction of the bottom plate.

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