Air sterilization device

Abstract

An air sterilization device includes a housing unit, a sterilization unit, a top cover unit, and a first control unit. The housing unit includes a mounting space having an upper opening. The sterilization unit includes a sterilization lamp disposed in the mounting space. The top cover unit includes a top cover body covering the upper opening, and a protective cover. The top cover body includes an air outlet channel in communication with the mounting space, and cooperates with the protective cover to define an isolation space isolated from the air outlet channel. The protective cover can block light from the sterilization lamp from entering the isolation space. The first control unit includes an electronic component group disposed in the isolation space. With the design of the top cover unit and the first control unit, the electronic component group is disposed in the isolation space, avoiding being irradiated by light from the sterilization lamp to cause component aging, effectively improving the service life of the component.

Description

Technical Field

[0001] This utility model relates to a sterilization device, and more particularly to an air sterilization device. Background Technology

[0002] As times change and people's demands for air quality increase, air purifiers have become increasingly common appliances. While the usage rate of air purifiers continues to rise, designing one with a relatively long lifespan and the ability to maintain high sterilization efficiency is one of the main research goals for researchers in this field. Utility Model Content

[0003] The purpose of this invention is to provide an air sterilization device that can overcome at least one of the shortcomings of the prior art.

[0004] The air sterilization device of this utility model includes a housing unit, a sterilization unit, an upper cover unit, and a first control unit.

[0005] The housing unit includes a mounting space. The mounting space has an upper opening.

[0006] The sterilization unit includes a sterilization lamp disposed in the installation space.

[0007] The top cover unit includes a top cover body covering the upper opening of the installation space, and a protective cover. The top cover body includes an air vent passage communicating with the installation space. The top cover body and the protective cover together define an isolation space. The isolation space is isolated from the air vent passage. The protective cover is used to block light from the germicidal lamp from entering the isolation space.

[0008] The first control unit includes a group of electronic components disposed in the isolated space.

[0009] The air sterilization device of this utility model includes a top cover body comprising a top wall portion with an upper opening located in the housing unit, a groove wall portion extending downward from the top wall portion, and a surrounding wall portion extending downward from the periphery of the top wall portion and connecting to the groove wall portion. The protective cover of the top cover unit includes a cover plate portion and an extension portion extending downward and outward from the periphery of the cover plate portion. The top wall portion, the groove wall portion, the surrounding wall portion, and the protective cover of the top cover body together define the isolation space.

[0010] The present invention discloses an air sterilization device, wherein the isolation space includes an electronic component placement area and a cable tray area communicating with the electronic component placement area. The top wall of the upper cover body, the surrounding wall, and the cover plate of the protective cover jointly define the electronic component placement area. The cable tray wall of the upper cover body and the extension of the protective cover jointly define the cable tray area. The cable tray area extends downward from the electronic component placement area. The first control unit includes an electronic component group located in the electronic component placement area and at least one wire located in the cable tray area.

[0011] The air sterilization device of this utility model further includes a flow guiding unit, which includes at least one flow guiding element. The at least one flow guiding element is disposed at the bottom end or top end of the sterilization lamp, and the material of the at least one flow guiding element is UV-resistant plastic.

[0012] The air sterilization device of this utility model includes two flow guides in the flow guiding unit. The flow guides are spaced vertically in the longitudinal direction and are located at the bottom and top of the sterilization lamp, respectively.

[0013] The air sterilization device of this utility model further includes a base defining an air intake channel and a guide fan disposed between the base and the guide member located below. The sterilization unit also includes a reflective enclosure that radially and spaced around the sterilization lamp and together with the sterilization lamp defines a sterilization area located in the installation space. The air intake channel communicates with the sterilization area, and the air outlet channel communicates with the sterilization area.

[0014] In the air sterilization device of this utility model, each of the air guide components is truncated cone in shape and is located on the top and bottom sides of the sterilization zone, respectively.

[0015] In this invention's air sterilization device, the maximum width of the lower air guide component is greater than the maximum width of the air guide fan.

[0016] The air sterilization device of this utility model includes a top cover body that further includes a plurality of fin portions that are spaced apart from each other and extend outward from the enclosure portion, and a cover portion connected to the fin portions. The cover portion is connected to the top side of the housing unit. The fin portions, the enclosure portion, the groove wall portion and the cover portion together define the air outlet channel.

[0017] The air sterilization device of this utility model further includes an outer cover covering the upper cover unit, the outer cover defining an air outlet that communicates with the air outlet channel, the housing unit including at least one air inlet that communicates with the air inlet channel, the air inlet channel extending in an intersecting direction intersecting the longitudinal direction, and the base defining a communication port that communicates with the air inlet channel and extends vertically through it.

[0018] The beneficial effects of this utility model are as follows: by utilizing the design of the upper cover unit and the first control unit, the electronic component group is set in the isolation space, avoiding being irradiated by the light from the germicidal lamp, thus effectively improving the service life of the components. Attached Figure Description

[0019] Figure 1 This is a perspective view illustrating an embodiment of the air sterilization device of this utility model.

[0020] Figure 2 This is a top view illustrating the embodiment.

[0021] Figure 3 This is an exploded three-dimensional diagram illustrating this embodiment.

[0022] Figure 4 It is different Figure 3 A three-dimensional exploded view from a specific perspective.

[0023] Figure 5 This is an exploded perspective view illustrating a top cover unit of this embodiment, with multiple wires omitted.

[0024] Figure 6 It is different Figure 5 A three-dimensional exploded view from a perspective, omitting the aforementioned wires.

[0025] Figure 7 It is along Figure 2 An incomplete longitudinal sectional view intercepted by line VII-VII.

[0026] Figure 8 yes Figure 7 A magnified view of a portion of the image.

[0027] Figure 9 It is along Figure 2 An incomplete longitudinal sectional view intercepted by line IX-IX in the diagram. Detailed Implementation

[0028] See Figure 1 , Figure 3 , Figure 5 , Figure 7 An embodiment of the air sterilization device of this utility model includes a housing unit 1, a base 2, a guide fan 3, a sterilization unit 4, a guide unit 5, an upper cover unit 6, a first control unit 7, a second control unit 91, an external power supply 92, and an outer cover 8.

[0029] The housing unit 1 includes a square bottom shell wall 11, two first side shell walls 12, and two second side shell walls 13. The first side shell walls 12 extend upward in a longitudinal direction X1 from the front and rear edges of the bottom shell wall 11, respectively. The second side shell walls 13 extend upward from the left and right edges of the bottom shell wall 11, respectively, and are connected between the first side shell walls 12.

[0030] See Figure 3 , Figure 7 The bottom shell wall 11, the first side shell wall 12, and the second side shell wall 13 together define an installation space 14. The installation space 14 extends vertically along the longitudinal direction X1 and has an upward opening 141. Each of the first side shell walls 12 has an air intake grille 121 located on the bottom side and extending through the front and back.

[0031] In some embodiments, only one first side shell wall 12 may have the air intake grille 121, so that the number of air intake grilles 121 is one.

[0032] The base 2 is a horizontally inverted square hollow shell, defining an air intake channel 21 that runs through the longitudinal direction X2, and a vertically connected opening 22. The air intake channel 21 is positioned corresponding to and directly connected to the air intake grille 121. The vertically connected opening 22 is connected to the air intake channel 21.

[0033] The air guide fan 3 is disposed in the mounting space 14 and located above the communication port 22 of the base 2, thereby guiding air from the air intake channel 21 upward through the communication port 22. The air guide fan 3 has a maximum width W1 measured in the intersecting direction X2. In this embodiment, the maximum width W1 of the air guide fan 3 is the diameter width.

[0034] The sterilization unit 4 includes a sterilization lamp 41 located in the installation space 14 and extending vertically in the longitudinal direction X1, and a reflective enclosure 42 radially spaced around the sterilization lamp 41. The reflective enclosure 42 and the sterilization lamp 41 together define a sterilization zone 43 in the installation space 14. The air intake channel 21 communicates with the gas in the sterilization zone 43 via the communication port 22 and the guide fan 3. The sterilization lamp 41 can be an ultraviolet lamp tube that emits ultraviolet light to effectively sterilize the air in the sterilization zone 43. The reflective enclosure 42 is radially spaced inside the first side shell wall 12 and the second side shell wall 13 of the housing unit 1, and together with the housing unit 1, defines a gap 44.

[0035] In this embodiment, the outer peripheral surface of the germicidal lamp 41 can be a whole surface of light, and specifically it can be an LED lamp tube that can irradiate ultraviolet light radially outward in 360 degrees.

[0036] The reflective shield 42 may be a single layer or a thin sheet encircled in a cylindrical shape, and may be made of at least one of aluminum and silver, capable of reflecting ultraviolet light. In some embodiments, the reflective shield 42 may include a substrate layer (not shown) and a reflective layer (not shown) formed on the inner surface of the substrate layer that is irradiated with ultraviolet light. The material of the substrate layer is not limited, and the reflective layer may be made of reflective materials such as aluminum or silver.

[0037] See Figure 3 , Figure 4 , Figure 7 The flow guiding unit 5 includes two flow guiding elements 51 spaced vertically in the longitudinal direction X1. The flow guiding elements 51 are located in the sterilization zone 43 and are radially spaced from the reflective enclosure 42 inside the reflective enclosure 42. The bottom and top ends of the sterilization lamp 41 are respectively mounted on their respective flow guiding elements 51, and the flow guiding elements 51 are respectively disposed on the top and bottom sides of the sterilization zone 43, and the flow guiding fan 3 is disposed between the base 2 and the flow guiding element 51 located below.

[0038] Each of the aforementioned air guides 51 is truncated conical in shape, and the diameter of each air guide 51 gradually increases from bottom to top along the longitudinal direction X1; the maximum width W2 of the lower air guide is greater than the maximum width W1 of the air guide fan 3. By using the radial spacing between each air guide 51 and the reflective enclosure 42, the inner surfaces of the air guides 51 and the reflective enclosure 42 together define an acceleration channel 52 located in the sterilization zone 43. Each acceleration channel 52 is wider at the bottom and narrower at the top, which can compress and increase the airflow speed from bottom to top. The transverse contour of the acceleration channel 52 is annular.

[0039] The material used to make the flow guide 51 includes an UV-resistant plastic. The UV-resistant plastic includes a material selected from the group consisting of Teflon (PTFE), polyvinylidene fluoride (PVDF), melt-processable fluoropolymers, plastics coated with light absorbers (e.g., black carbon black), polycarbonate (PC), and polyethylene (PE).

[0040] In some embodiments, the number of the flow guide 51 may be one, and it is disposed at a bottom end or a top end of the germicidal lamp 41.

[0041] See Figure 5 , Figure 6 , Figure 8 The upper cover unit 6 includes an upper cover body 61 covering the upper opening 141, and a protective cover 62 connected to the bottom side of the upper cover body 61.

[0042] The main body 61 of the upper cover includes a square top wall portion 611 with rounded corners located at the upper opening 141, a grooved wall portion 612 extending downward from a portion of the periphery of the top wall portion 611, a surrounding wall portion 613 extending downward from the remaining portion of the periphery of the top wall portion 611 and connected to two opposite sides of the grooved wall portion 612, a plurality of spaced-apart fin portions 614 extending radially outward from the surrounding wall portions 613, and a cover portion 615 connected to the outside of the fin portions 614. The grooved wall portion 612 is generally in the shape of a bent strip, extending vertically downward from the top wall portion 611 and then radially horizontally forward. Each of the fin portions 614 is in the shape of an upright plate, and the fin portions 614 are arranged radially between the surrounding wall portion 613 and the cover portion 615. The cover 615 is connected to the top side of the housing unit 1 and to the top of the reflective cover 42.

[0043] The protective cover 62 includes a sheet-like cover portion 621 and a bent-plate-like extension portion 622. The extension portion 622 extends downward from a portion of the periphery of the cover portion 621 and then forward. The protective cover 62 is located above the flow guide 51, covering the bottom side of the enclosure portion 613 and the groove wall portion 612, and the extension portion 622 is positioned opposite the groove wall portion 612.

[0044] See Figure 8 , Figure 9 The fin portion 614, the surrounding wall portion 613, the groove wall portion 612, and the cover portion 615 together define the air outlet channel 616, so that the upper cover body 61 includes an air outlet channel 616 communicating with the installation space 14. More specifically, the air outlet channel 616 communicates with the sterilization zone 43 located in the installation space 14. The top wall portion 611, the groove wall portion 612, the surrounding wall portion 613, and the protective cover 62 of the upper cover body 61 together define an isolation space 63. Thereby, the upper cover body 61 and the protective cover 62 together define the isolation space 63, and the isolation space 63 is laterally isolated from the air outlet channel 616; the protective cover 62 can block light from the sterilization lamp 41 located below it from entering the isolation space 63.

[0045] More specifically, the isolation space 63 includes an electronic component placement area 631 and a cable tray area 632 communicating with the electronic component placement area 631. The top wall portion 611 of the upper cover body 61, together with the surrounding wall portion 613 and the cover plate portion 621 of the protective cover 62, defines the electronic component placement area 631. The cable tray wall portion 612 of the upper cover body 61 and the extension portion 622 of the protective cover 62 jointly define the cable tray area 632. The cable tray area 632 extends downward and forward from the electronic component placement area 631 and communicates with the gap 44 between the reflective enclosure 42 and the housing unit 1.

[0046] See Figure 5 , Figure 6 , Figure 8 , Figure 9 The first control unit 7 is disposed in the isolation space 63 and includes an electronic component group 71 located in the electronic component placement area 631 and multiple wires 72 located in the wire groove area 632. The electronic component group 71 may include a circuit board 711 locked to the lower surface of the top wall portion 611 and multiple electronic components 712 electrically connected to the circuit board 711. The electronic components 712 may include, but are not limited to, control keys 712', resistors, capacitors, inductors, processors (e.g., microcontrollers, digital signal processors, system-on-a-chip), energy storage devices (e.g., rechargeable batteries), etc. The control keys 712' may be installed in the top wall portion 611 and exposed thereout for press control. Since there are many types of electronic components 712 and they are known, and are not the focus of this invention, they will not be described in detail here. The wires 72 are electrically connected to the electronic component group 71. The design of the isolation space 63 can prevent the first control unit 7 from being exposed to ultraviolet light and thus aging. In some embodiments, the number of wires 72 may be one, depending on actual needs.

[0047] See Figure 3 , Figure 7 The second control unit 91 is disposed in the gap 44 between the reflective enclosure 42 and the first side shell 12 located on the front side, and the second control unit 91 is signal-connected to the first control unit 7. In this embodiment, the second control unit 91 is signal-connected to the wire 72 of the first control unit 7. The second control unit 91 includes a housing 910 located in the gap 44, and a plurality of electrical components 911 located in the housing. The electrical components 911 may include resistors, capacitors, circuit boards, controllers, etc. Since the electrical components 911 are common knowledge in the relevant technical field and are not the focus of this invention, they will not be described in detail here.

[0048] The external power supply 92 is located at the bottom of the first side shell 12 on the front side, and is directly or indirectly connected to the first control unit 7 and the second control unit 91. It can be electrically connected to external power via a wire (not shown). External power sources include, but are not limited to, mains power, batteries, power banks, etc.

[0049] From a top view, the outer cover 8 matches the outer contour shape of the cover portion 615 of the upper cover body 61, is placed on top of the upper cover body 61, and defines an air vent 81 that communicates with the air vent channel 616 of the upper cover unit 6.

[0050] See Figures 7 to 9In use, the device receives external electrical energy via an external power supply 92. This energy is then transmitted to the second control unit 91 and the first control unit 7, controlling the germicidal lamp 41 to emit ultraviolet light. The guide fan 3 activates, drawing air from the air intake grille 121 into the air intake channel 21. The air then passes through the connecting port 22, the guide fan 3, and the lower speed-increasing channel 52 before entering the sterilization zone 43. At this point, the air in the sterilization zone 43 is sterilized using the sterilization properties of ultraviolet light. After sterilization, the clean air is released outwards through the upper speed-increasing channel 52, the air outlet channel 616, and the air outlet grille 81.

[0051] Therefore, this invention mainly involves first drawing in outside air, sterilizing and disinfecting it through the sterilization unit 4, and then expelling the sterilized air as a clean air circulation mode, which can significantly improve air quality.

[0052] Since the first control unit 7 is located in the isolation space 63 of the upper cover unit 6, and both the upper cover body 61 and the protective cover 62 can block light from the germicidal lamp 41 from entering the isolation space 63, it can be ensured that the electronic component group 71 and the wire 72 of the first control unit 7 are not aged and have their service life shortened due to long-term exposure to the light of the germicidal lamp 41. Furthermore, since the wire 72 is located in the isolation space 63 and / or extends to the gap 44 outside the reflective enclosure 42, it can also avoid being directly or indirectly exposed to the light generated by the germicidal lamp 41 (e.g., light leakage caused by the diffused light generated by the germicidal lamp 41). In some embodiments, if the energy storage device such as a battery is located in the isolation space 63, the wire 72 does not need to extend to the gap 44.

[0053] The first control unit 7 and the second control unit 91 can control the operation of the ultraviolet light and the airflow fan 3 separately and / or jointly. The electronic components 712 of the first control unit 7 may include control keys 712' for user control. In some embodiments, the second control unit 91 can be omitted as needed, so that the wire 72 is electrically connected between the external power supply 92 and the electronic components 712 of the first control unit 7. In some embodiments, in addition to omitting the second control unit 91, if a commercially available battery is used, the external power supply 92 can be omitted.

[0054] The main body 61 of the top cover and the protective cover 62 can be made of metal and / or UV-resistant plastic.

[0055] Furthermore, the reflective enclosure 42 surrounds the germicidal lamp 41 at intervals and can reflect light, especially ultraviolet light. Therefore, the light from the germicidal lamp 41 can fully illuminate the sterilization area 43 and continuously sterilize the air after being reflected in the sterilization area 43, resulting in a good sterilization effect.

[0056] On the other hand, the upward-flowing air accelerates its flow when passing through the speed-increasing channel 52, thereby increasing the exhaust volume per unit time and improving the sterilization effect. Furthermore, since the material of the guide member 51 includes UV-resistant plastic, it can prevent the guide member 51 from being accelerated to age due to exposure to the light of the germicidal lamp 41.

[0057] In summary, the air sterilization device of this utility model, by utilizing the design of the protective cover 62, can prevent direct and / or reflected light generated by the sterilization unit 4 from irradiating the first control unit 7 in the isolation space 63, thus preventing premature aging of the first control unit 7. The design of the guide element 51, made of UV-resistant plastic, achieves the advantage of lightweight air sterilization compared to a metal guide element 51. The design of the sterilization unit 4 allows UV light to fully and without blind spots irradiate the sterilization area, maintaining high sterilization efficiency. The design of the lower guide element 51, with its maximum width W2 greater than the maximum width W1 of the guide fan 3, effectively guides the airflow passing through the guide fan 3 and enhances the air velocity, further improving the overall air sterilization efficiency of the device. Therefore, it effectively achieves the purpose of this utility model.

[0058] The above description is merely an embodiment of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of this utility model shall still fall within the scope of this utility model.

Claims

1. An air sterilization device, comprising a housing unit, a sterilization unit, a top cover unit, and a first control unit, wherein the housing unit includes an installation space having an upper opening, and the sterilization unit includes a sterilization lamp disposed in the installation space, characterized in that: The top cover unit includes a top cover body covering the upper opening of the installation space and a protective cover. The top cover body includes an air outlet channel communicating with the installation space. The top cover body and the protective cover together define an isolation space. The isolation space is isolated from the air outlet channel. The protective cover is used to block light from the germicidal lamp from entering the isolation space. The first control unit includes an electronic component assembly disposed in the isolation space.

2. The air sterilization device according to claim 1, characterized in that: The main body of the upper cover includes a top wall portion located at the upper opening of the housing unit, a groove wall portion extending downward from the top wall portion, and a surrounding wall portion extending downward from the periphery of the top wall portion and connecting to the groove wall portion. The protective cover of the upper cover unit includes a cover plate portion and an extension portion extending downward and outward from the periphery of the cover plate portion. The top wall portion, the groove wall portion, the surrounding wall portion, and the protective cover of the main body of the upper cover together define the isolation space.

3. The air sterilization device according to claim 2, characterized in that: The isolation space includes an electronic component placement area and a cable tray area communicating with the electronic component placement area. The top wall of the upper cover body, the surrounding wall, and the cover plate of the protective cover jointly define the electronic component placement area. The cable tray wall of the upper cover body and the extension of the protective cover jointly define the cable tray area. The cable tray area extends downward from the electronic component placement area. The first control unit includes an electronic component group located in the electronic component placement area and at least one wire located in the cable tray area.

4. The air sterilization device according to claim 3, characterized in that: It also includes a flow guiding unit, which includes at least one flow guiding element disposed at the bottom or top of the germicidal lamp, and the material of the at least one flow guiding element is UV-resistant plastic.

5. The air sterilization device according to claim 4, characterized in that: The flow guiding unit includes two flow guiding elements, which are spaced vertically in the longitudinal direction and are located at the bottom and top of the germicidal lamp, respectively.

6. The air sterilization device according to claim 5, characterized in that: It also includes a base defining an air intake passage and a guide fan disposed between the base and the guide member located below. The sterilization unit also includes a reflective enclosure that radially and spaced around the sterilization lamp and together with the sterilization lamp defines a sterilization zone in the installation space. The air intake passage communicates with the sterilization zone and the air outlet passage communicates with the sterilization zone.

7. The air sterilization device according to claim 6, characterized in that: Each of the aforementioned flow guides is truncated cone in shape and is located on the top and bottom sides of the sterilization zone, respectively.

8. The air sterilization device according to claim 7, characterized in that: The maximum width of the lower guide element is greater than the maximum width of the guide fan.

9. The air sterilization device according to claim 6, characterized in that: The main body of the upper cover also includes a plurality of spaced-apart fin portions extending outward from the enclosure portion, and a cover portion connected to the fin portions. The cover portion is connected to the top side of the housing unit. The fin portions, the enclosure portion, the groove wall portion, and the cover portion together define the air outlet channel.

10. The air sterilization device according to claim 9, characterized in that: It also includes an outer cover disposed on the upper cover unit, the outer cover defining an air outlet that communicates with the air outlet passage, the housing unit including at least one air inlet that communicates with the air inlet passage, the air inlet passage extending in an intersecting direction intersecting the longitudinal direction, and the base also defining a connecting port that communicates with the air inlet passage and extends vertically through it.

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