Air purification sterilizer

Abstract

The utility model relates to the technical field of air purification, in particular to an air purification sterilizer which comprises a case assembly, an ultraviolet lamp assembly, a filter screen, a photocatalyst assembly, a human body induction switch, a display screen assembly and a six-in-one sensor assembly. And then the ultraviolet lamp tube assembly and the photocatalyst assembly are used for further disinfecting and killing the preliminarily filtered air, so that the purification, sterilization and virus removal efficiency is improved, and peculiar smell, formaldehyde and VOC removal is more lasting and thorough. A human body induction switch and a six-in-one sensor assembly are adopted, the automatic startup and shutdown function is achieved, intelligent control is achieved, energy is saved, the purification efficiency is improved, and meanwhile visual situation awareness of air quality data is achieved. The problems that an existing air purifier cannot automatically adjust the working state according to activities of indoor personnel, an ultraviolet sterilization lamp is insufficient in safety, and the photocatalyst purification efficiency is low are solved.

Description

An air purification and sterilization machine Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an air purification and disinfection machine. Background Technology

[0002] With air pollution becoming increasingly serious, air purifiers have become essential equipment in homes and offices. Consumers' demands for air purifiers are no longer limited to simple particulate filtration; they now expect them to have multiple functions such as sterilization, odor removal, and decomposition of harmful gases to provide more comprehensive health protection.

[0003] While existing air purifiers can meet people's needs for improved indoor air quality to some extent, they still have some shortcomings. For example, traditional air purifiers usually use manual or timer controls, and cannot automatically adjust their operating status according to the activity of people in the room, resulting in energy waste or poor purification effects. In addition, traditional ultraviolet germicidal lamps need to be turned on continuously to maintain the sterilization effect, but long-term direct exposure to ultraviolet rays may cause damage to human skin and eyes. Existing devices lack intelligent sensing mechanisms and cannot automatically turn off the UV lamps when people are present, making it difficult to balance safety and purification effectiveness. Photocatalysis relies on ultraviolet light activation to decompose organic pollutants, but in traditional designs, the coupling efficiency between the UV light source and the photocatalytic module is low, and the lack of targeted airflow guidance often leads to insufficient reaction area and unstable degradation efficiency. Traditional purifiers continue to operate at a fixed power in unoccupied environments, and cannot be triggered by human presence, resulting in energy waste and shortened filter life due to ineffective operation.

[0004] Therefore, developing a new type of air purifier is of great significance. Summary of the Invention

[0005] The purpose of this invention is to provide an air purification and disinfection machine that addresses the problems of existing air purifiers being unable to automatically adjust their operating status according to indoor occupant activity, insufficient safety of ultraviolet germicidal lamps, and low photocatalytic purification efficiency.

[0006] To achieve the above objectives, this utility model provides an air purification and disinfection machine, including a chassis assembly that encloses a duct space for airflow from left to right. The machine also includes an ultraviolet lamp assembly, a filter, a photocatalyst assembly, a human body sensor switch, a display screen assembly, and a six-in-one sensor assembly. The ultraviolet lamp assembly is disposed in the duct space along the airflow direction. The filter is detachably connected to the air inlet at the left end of the chassis assembly. The photocatalyst assembly is disposed at the upper end of the ultraviolet lamp assembly. The human body sensor switch, the display screen assembly, and the six-in-one sensor assembly are fixedly connected to the chassis assembly and are respectively located on the front of the chassis assembly.

[0007] The ultraviolet lamp assembly includes a reflector, an ultraviolet lamp, and a lamp tube bracket. The reflector is connected to the chassis assembly and is located in the air duct space. The ultraviolet lamp is detachably connected to the lamp tube bracket, and the lamp tube bracket is detachably connected to the reflector and is located inside the reflector.

[0008] The photocatalyst assembly includes a photocatalyst support and a photocatalyst mesh. The photocatalyst mesh is detachably connected to the photocatalyst support, and the photocatalyst support is detachably connected to the reflector and is located at the upper end of the ultraviolet lamp.

[0009] The six-in-one sensor assembly includes a six-in-one sensor and a sensor housing. The six-in-one sensor is connected to the sensor housing, and the sensor housing is connected to the chassis assembly.

[0010] The display assembly includes a display screen and a panel. The display screen is connected to the six-in-one sensor via an electronic signal line, and the panel is connected to the display screen via an electronic signal line and is located inside the chassis assembly.

[0011] The air purifier and sterilizer also includes a rear cover, a base plate, a fixing plate, and a cover plate. The rear cover is detachably connected to the chassis assembly and is located at the bottom of the chassis assembly. The base plate is detachably connected to the rear cover and is located at the bottom of the rear cover. The fixing plate is detachably connected to the base plate and is located at the bottom of the base plate. The cover plate is detachably connected to the rear cover and is located on the side of the rear cover near the filter.

[0012] This utility model discloses an air purifier and disinfection machine. Firstly, it utilizes a filter to effectively degrade toxic and harmful gases in the air. It also provides preliminary air filtration functions such as formaldehyde removal, deodorization, stain resistance, and air purification. The filter employs a three-in-one design: H11 HEPA filter, activated carbon filter, and G4 coarse filter. The filtration principle is based on layered interception and adsorption, allowing air to pass through different functional filter layers sequentially, removing different types of pollutants. The first layer: G4 coarse filter (pre-filter). When air flows through this relatively loose fiber mesh, larger particles (such as dust, hair, dander, willow catkins, some pollen, and some mold spores) are directly sieved out because their size is larger than the fiber gaps. This protects the subsequent finer and more expensive HEPA and activated carbon filters, preventing them from being quickly clogged by large particles and extending the overall filter life. It also improves overall filtration efficiency and prevents large particles from interfering with the effectiveness of subsequent adsorption layers. The second layer: Activated carbon mesh (gaseous pollutant adsorption layer), typically granular or honeycomb (columnar) activated carbon, adsorbs gaseous pollutants, odors, and some volatile organic compounds (VOCs). Activated carbon has a huge specific surface area (its interior is filled with microporous structures), acting like a super sponge. Gaseous pollutant molecules (such as formaldehyde, benzene, toluene, sulfur dioxide, nitrogen dioxide, ozone, ammonia, smoke odor, pet odor, food odor, etc.) are adsorbed and locked within the micropores by the strong surface attraction (van der Waals forces) when passing through the activated carbon layer. This removes harmful gases, odors, and VOCs from the air, significantly improving air quality. The third layer: H11 HEPA filter (high-efficiency particulate filter layer) efficiently removes ultrafine particles. The combined action of multiple physical mechanisms (diffusion, interception, inertial impaction, sieving) results in the lowest efficiency (most difficult to capture) for particles around 0.3 micrometers, but the H11 level achieves a filtration efficiency of ≥98% for this particle size. This high-efficiency filter removes PM2.5 (≤2.5 micrometer particles), PM0.3 (the most difficult particle size to filter), allergens (such as pollen, dust mite excrement fragments, and even smaller mold spores), bacteria, viruses (usually attached to droplet nuclei or aerosols), pet dander, and other ultrafine particles. This 3-in-1 filter utilizes three core mechanisms: physical interception (G4 coarse filtration, HEPA), and physical / chemical adsorption (activated carbon), purifying the air layer by layer in a "from coarse to fine" order. This achieves comprehensive and efficient removal of large particles, gaseous pollutants (odors / VOCs), and ultrafine particles (PM2.5 / allergens / bacteria, etc.). The filter then further disinfects the initially filtered air using the UV lamp assembly and photocatalyst assembly, comprehensively improving the efficiency of purification, sterilization, and virus removal, and ensuring more lasting and thorough elimination of odors, formaldehyde, and VOCs.By employing the aforementioned human body induction switch and the six-in-one sensor assembly, the infrared human body induction function can detect the presence of human activity within its range, enabling automatic on / off operation and intelligent control. This saves energy and improves purification efficiency. Simultaneously, it allows for unified and comprehensive management of air quality monitoring data, achieving visualized situational awareness of air quality data. This addresses the problems of existing air purifiers that cannot automatically adjust their operating status based on indoor human activity, the insufficient safety of ultraviolet germicidal lamps, and the low efficiency of photocatalytic purification. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 is a three-dimensional structural diagram of the air disinfection and purification machine of this utility model.

[0015] Figure 2 is a top view of the air disinfection and purification machine of this utility model.

[0016] Figure 3 is a schematic diagram of the overall exploded structure of the air disinfection and purification machine of this utility model.

[0017] Figure 4 is a schematic diagram of the exploded structure of the ultraviolet lamp assembly of this utility model.

[0018] Figure 5 is a schematic diagram of the exploded structure of the photocatalyst component of this utility model.

[0019] Figure 6 is an exploded view of the six-in-one sensor assembly of this utility model.

[0020] In the diagram: 1-Chassis assembly, 2-Human body induction switch, 3-Power switch assembly, 4-Display assembly, 5-Six-in-one sensor assembly, 6-Air outlet, 7-Rear cover, 8-Fixing plate, 9-Base plate, 10-Cover plate, 11-Air inlet, 12-Photocatalyst assembly, 13-Filter, 14-Fan assembly, 15-Switching power supply, 16-UV lamp ballast, 17-UV lamp assembly, 41-Display screen, 42-Panel, 51-Sensor housing, 52-Six-in-one sensor, 121-Photocatalyst mesh, 122-Photocatalyst bracket, 171-Reflector, 172-UV lamp, 173-Lamp bracket. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] Please refer to Figures 1 to 6. Figure 1 is a three-dimensional structural diagram of the air disinfection and purification machine of this utility model. Figure 2 is a top view of the air disinfection and purification machine of this utility model. Figure 3 is an exploded structural diagram of the overall air disinfection and purification machine of this utility model. Figure 4 is an exploded structural diagram of the ultraviolet lamp assembly of this utility model. Figure 5 is an exploded structural diagram of the photocatalyst assembly of this utility model. Figure 6 is an exploded structural diagram of the six-in-one sensor assembly of this utility model.

[0023] This utility model provides an air purifier and disinfection machine, including a chassis assembly 1, an ultraviolet lamp assembly 17, a filter 13, a photocatalyst assembly 12, a human body induction switch 2, a display screen assembly 4, a six-in-one sensor assembly 5, a rear cover 7, a base plate 9, a fixing plate 8, and a cover plate 10. The ultraviolet lamp assembly 17 includes a reflector 171, an ultraviolet lamp 172, and a lamp tube bracket 173. The photocatalyst assembly 12 includes a photocatalyst bracket 122 and a photocatalyst mesh 121. The six-in-one sensor assembly 5 includes a six-in-one sensor 52 and a sensor housing 51. The display screen assembly 4 includes a display screen 41 and a panel 42.

[0024] In this specific embodiment, the ultraviolet lamp assembly 17 is arranged in the air duct space along the airflow direction. The filter 13 is detachably connected to the air inlet 11 at the left end of the chassis assembly 1. The photocatalyst assembly 12 is arranged at the upper end of the ultraviolet lamp assembly 17. The human body sensor switch 2, the display screen assembly 4, and the six-in-one sensor assembly 5 are respectively fixedly connected to the chassis assembly 1 and are located on the front of the chassis assembly 1. The chassis assembly 1 encloses an air duct space that allows air to flow from left to right. The left end is the air inlet 11, and the right end is the air outlet 6, providing a reaction space independent of the external environment for the purification process. A fan assembly 14, a switching power supply 15, and a power switch assembly 3 are installed at the right end of the chassis assembly 1. The fan assembly 14 promotes airflow into the air duct space, the switching power supply 15 provides electrical energy, and the power switch assembly 3 controls the device startup. The ultraviolet lamp assembly 17 and the ultraviolet lamp ballast 16 are arranged in the chassis assembly 1. The ultraviolet lamp ballast 16 provides a stable power supply to the ultraviolet lamp assembly 17. The current and voltage are controlled to ensure the UV lamp 172 can start normally and operate stably continuously. The wavelength range of the emitted UV light is 254nm to 257nm. The photocatalyst component 12 works in conjunction with the UV lamp component 17. The human body induction switch 2 is installed on the front of the chassis component 1 and uses an infrared human body induction sensor to detect whether there is human activity within the detection range. The data on whether human activity is detected is reported to the control module to control the device to turn on. The device automatically shuts down after running for 15 minutes without detecting human activity within a set time, realizing intelligent control, saving energy and improving purification efficiency. In addition, the six-in-one sensor component 5 and the display screen component 4 are installed on the front of the chassis component 1 to synchronously detect and display data on formaldehyde, TVOC, PM10, carbon monoxide, carbon dioxide and air quality.

[0025] The reflector 171 is connected to the chassis assembly 1 and located in the air duct space. The ultraviolet lamp 172 is detachably connected to the lamp tube bracket 173, and the lamp tube bracket 173 is detachably connected to the reflector 171 and located inside the reflector 171. The photocatalyst mesh 121 is detachably connected to the photocatalyst bracket 122, and the photocatalyst bracket 122 is detachably connected to the reflector 171 and located above the ultraviolet lamp 172.

[0026] To further enhance the dual function of the ultraviolet lamp 172 in converting residual ozone and sterilizing, a photocatalyst support 122 and a photocatalyst mesh 121 are also provided. The surface of the photocatalyst mesh 121 is coated with a photocatalyst, and the photocatalyst support 122 is sleeved on the upper end of the ultraviolet lamp 172. The mesh structure of the photocatalyst mesh 121 increases the contact area with the airflow, and the filter pores on the photocatalyst mesh 121 are nanopores. Nanopores have a stronger physical structure and can withstand greater wind pressure, ensuring both robustness and excellent photocatalytic activity. This ensures that residual ozone molecules fully contact the photocatalyst. Under the catalysis of the photocatalyst, the ozone molecules are fully irradiated by the ultraviolet lamp 172 at the rear end and react completely. The ultraviolet light and the photocatalyst mesh 121 generate a purification factor PHI, which catalytically oxidizes organic pollutants such as benzene and formaldehyde in the air. The photocatalyst support 122 is fixed to the reflector 171 by bolts. The reflector 171 is made of galvanized sheet and its inner surface is a smooth surface made by grinding. The smooth surface of the galvanized sheet has a good reflective effect, which is beneficial to reflect ultraviolet light onto the photocatalyst mesh 121. The lamp support 173 is used to install the ultraviolet lamp 172 on the reflector 171.

[0027] Secondly, the six-in-one sensor 52 is connected to the sensor housing 51, and the sensor housing 51 is connected to the chassis assembly 1. The display screen 41 is connected to the six-in-one sensor 52 via an electronic signal line, and the panel 42 is connected to the display screen 41 via an electronic signal line and is located inside the chassis assembly 1.

[0028] The six-in-one sensor 52 integrates formaldehyde, TVOC, PM10, CO, CO2 and air quality data fusion modules to achieve simultaneous detection and intelligent linkage control of multiple pollutants. Furthermore, the six-in-one sensor 52 is connected to the display screen 41, which can transmit the data detected by the sensor in real time and display it synchronously on the screen, dynamically and in real time showing the changes in air quality in the space where the air purifier is located.

[0029] Simultaneously, the rear cover 7 is detachably connected to the chassis assembly 1 and located at the bottom of the chassis assembly 1. The base plate 9 is detachably connected to the rear cover 7 and located at the bottom of the rear cover 7. The fixing plate 8 is detachably connected to the base plate 9 and located at the bottom of the base plate 9. The cover plate 10 is detachably connected to the rear cover 7 and located on the side of the rear cover 7 near the filter screen 13. The rear cover 7 is bolted to the bottom of the chassis assembly 1 for easy disassembly and installation. The base plate 9 and the fixing plate 8 are fitted together at the bottom of the rear cover 7 for support. The cover plate 10 is bolted to the rear cover 7 for easy disassembly, thereby facilitating the replacement of the filter screen 13 inside the chassis assembly 1.

[0030] The air purifier and sterilizer of this embodiment, through the cooperation of the filter 13, UV lamp assembly 17, and photocatalyst assembly 12, enables the air purifier and sterilizer to filter floating particles in the air, remove oil, remove formaldehyde, sterilize, and decompose harmful organic matter, providing rich functionality and a better user experience. The enclosure assembly 1, forming an air duct space that allows air to flow from left to right, can conceal the UV lamp assembly 17 and the photocatalyst assembly 12, reducing the harm of the UV lamp 172 to the human body and preventing damage from collisions that could cause cuts. The concealed structure also blocks UV rays from directly irradiating the human body and prolongs the retention time of air entering the filter 13 housing, resulting in better air purification and sterilization effects. Compared to existing technologies, the air purifier and sterilizer provided in this utility model is an intelligent air purifier that combines infrared human body sensing. The air purifier has a human body sensor installed on the front, and an air quality sensor, circuit control module, and display screen 41 inside. An infrared human body sensor is used to detect human activity within its detection range and reports the activity data to the control module to control the device's start and stop. An air quality sensor connected to display screen 41 transmits real-time data on formaldehyde, TVOC, PM10, carbon monoxide, and carbon dioxide, displaying the data synchronously on the screen. This addresses the problems of existing air purifiers that cannot automatically adjust their operating status based on indoor human activity, the insufficient safety of ultraviolet germicidal lamps, and the low efficiency of photocatalytic purification.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An air purification and disinfection machine, comprising a casing assembly, the casing assembly enclosing an air duct space for airflow from left to right, characterized in that, It also includes an ultraviolet lamp assembly, a filter, a photocatalyst assembly, a human body sensor switch, a display screen assembly, and a six-in-one sensor assembly. The ultraviolet lamp assembly is arranged in the air duct space along the airflow direction. The filter is detachably connected to the air inlet at the left end of the chassis assembly. The photocatalyst assembly is arranged at the upper end of the ultraviolet lamp assembly. The human body sensor switch, the display screen assembly, and the six-in-one sensor assembly are respectively fixedly connected to the chassis assembly and are located on the front of the chassis assembly.

2. The air purification and disinfection machine as described in claim 1, characterized in that, The ultraviolet lamp assembly includes a reflector, an ultraviolet lamp, and a lamp tube bracket. The reflector is connected to the chassis assembly and is located in the air duct space. The ultraviolet lamp is detachably connected to the lamp tube bracket, and the lamp tube bracket is detachably connected to the reflector and is located inside the reflector.

3. An air purification and disinfection machine as described in claim 2, characterized in that, The photocatalyst assembly includes a photocatalyst support and a photocatalyst mesh. The photocatalyst mesh is detachably connected to the photocatalyst support, and the photocatalyst support is detachably connected to the reflector and is located at the upper end of the ultraviolet lamp.

4. An air purification and disinfection machine as described in claim 3, characterized in that, The six-in-one sensor assembly includes a six-in-one sensor and a sensor housing, wherein the six-in-one sensor is connected to the sensor housing, and the sensor housing is connected to the chassis assembly.

5. An air purification and disinfection machine as described in claim 4, characterized in that, The display assembly includes a display screen and a panel. The display screen is connected to the six-in-one sensor via an electronic signal line, and the panel is connected to the display screen via an electronic signal line and is located inside the chassis assembly.

6. An air purification and disinfection machine as described in claim 5, characterized in that, The air purifier and sterilizer also includes a rear cover, a base plate, a fixing plate, and a cover plate. The rear cover is detachably connected to the chassis assembly and is located at the bottom of the chassis assembly. The base plate is detachably connected to the rear cover and is located at the bottom of the rear cover. The fixing plate is detachably connected to the base plate and is located at the bottom of the base plate. The cover plate is detachably connected to the rear cover and is located on the side of the rear cover near the filter.

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