Intelligent household air purification treatment device based on PLC

Abstract

The invention relates to the technical field of air purification, and discloses a PLC-based intelligent household air purification treatment device which comprises an air purification box, an air treatment mechanism is arranged in the air purification box, and a moving mechanism is arranged at the bottom end of the air purification box. The electric exhaust fan, the formaldehyde sensor, the dust sensor, the negative oxygen ion detector and the UV sterilizing lamp are started through the PLC control panel, the electric exhaust fan adopts a foreward DC9225 type turbine mute fan, the formaldehyde sensor adopts a YM-022 type air quality sensor, the dust sensor adopts an SDS026 type sensor, and the UV sterilizing lamp adopts a UV sterilizing lamp. An SN-3004-NEGO type miniature negative oxygen ion detector is adopted as the negative oxygen ion detector, when the electric exhaust fan rotates, external air is sucked in from the air inlet and sequentially passes through the dense-mesh filter screen, the activated carbon filter plate and the formaldehyde purification filter screen, so that large-particle impurities or hair in the external air is blocked by the dense-mesh filter screen, and the formaldehyde is purified by the activated carbon filter plate and the formaldehyde purification filter screen. Harmful gas and soluble impurities are adsorbed by the activated carbon filter plate.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to a PLC-based smart home air purification device. Background Art

[0002] People have higher requirements for the quality of their home environment, and home decoration has become a fashion. However, people often ignore the impact of the decorated home environment on health and safety.

[0003] Air purification addresses various indoor environmental issues by providing comprehensive solutions such as sterilization, dust and haze reduction, and the removal of harmful renovation residues and odors, improving living and working conditions and enhancing physical and mental health. Indoor environmental pollutants and sources primarily include radioactive gases, mold, particulate matter, renovation residue, and secondhand smoke. Consequently, air purifiers are becoming increasingly important appliances in our daily lives.

[0004] Air purifiers are used in homes, healthcare, and industry. In the home sector, stand-alone household air purifiers are the mainstream product. Their primary function is to remove airborne particulate matter, including allergens and indoor PM2.5. They can also address volatile organic compound (VOC) air pollution in indoor spaces, basements, and vehicles caused by renovations and other factors. However, most air purifiers on the market offer limited functionality, simply filtering and adsorbing impurities like dust and hair. They lack further air quality optimization measures and fail to meet user expectations for quality of life.

[0005] As disclosed in the authorization announcement number CN112791527A, a detachable spliced ​​air filter includes a frame, a connecting frame, a disassembly mechanism and a protective mechanism, wherein the disassembly mechanism is located at the connection between the frame and the connecting frame, and the disassembly mechanism includes a rotating baffle, which is located on one side surface of the frame, and the rear surface of the rotating baffle is provided with a fixed groove, a fixed turntable is provided inside the fixed groove, and a rotating block is fixedly connected to one side of the fixed turntable, a second spring is provided at the connection between the rotating block and the frame, and an extrusion column is provided on one side of the rotating baffle on one side of the frame; the rotating baffle is provided to facilitate the convenient disassembly of the connecting frame, facilitate timely cleaning of dust on the filter surface, improve the working efficiency of the device, and ensure the filtering quality of the device; the pull handle is provided to protect the frame, extend the service life of the frame, and improve the stability of the device. However, the invention has a relatively simple function and lacks measures to further optimize the air quality, which is not conducive to meeting people's demand for high-quality air quality. To this end, we proposed a PLC-based smart home air purification device, which solves the problem of the utility model's single function and low improvement in air quality, and improves the practical effect and user experience of the device. Summary of the Invention

[0006] (1) Technical problems solved

[0007] The purpose of the present invention is to provide a PLC-based air purification device for smart homes to solve the problem that the purification device in the prior art has a single function and a low degree of improvement in air quality as mentioned in the above background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: comprising an air purification box, an air treatment mechanism is provided inside the air purification box, and a moving mechanism is provided at the bottom of the air purification box; the air treatment mechanism comprises an air extraction component, a filtering and sterilization component is provided at the bottom of the air extraction component, an air quality sensing component is provided on one side of the air extraction component, and an air quality optimization component is provided on the other side; the air extraction component comprises an air inlet and an electric exhaust fan, the air inlet is fixedly provided on both sides of the bottom of the air purification box, a protective cover is fixedly installed on the outside of the electric exhaust fan, sound-absorbing cotton layers are provided on both sides of the inner wall of the protective cover, and an air outlet is provided on the top of the electric exhaust fan.

[0010] Preferably, the filtering and sterilizing component includes a close-mesh filter, which can be pulled out and slidably installed on the inner wall of the air purification box and is located above the air inlet.

[0011] Preferably, an activated carbon filter plate is installed on the top of the dense-mesh filter in a pull-out and sliding manner. The inside of the activated carbon filter plate contains a number of carbon particles. The top surface of the activated carbon filter plate is connected to a non-woven fabric layer. Photocatalyst particles are arranged between the activated carbon filter plate and the non-woven fabric layer.

[0012] Preferably, a formaldehyde purification filter is installed on the top of the activated carbon filter plate in a pull-out and sliding manner, and a UV sterilization lamp is fixedly installed on the top of the formaldehyde purification filter. Two UV sterilization lamps are provided and are fixedly installed on the inner wall of the air purification box in a vertically staggered manner.

[0013] Preferably, the dense-mesh filter, activated carbon filter plate and formaldehyde purification filter are provided with a built-in handle at one end close to the back side of the air purification box.

[0014] Preferably, the air quality sensing component includes a first installation cavity, in which a formaldehyde sensor, a dust sensor and a negative oxygen ion detector are fixedly installed.

[0015] Preferably, a PLC control panel is fixedly provided on one side of the air purification box, and the PLC control panel is electrically connected to the formaldehyde sensor, dust sensor, negative oxygen ion detector, UV sterilization lamp, negative ion generator and electric exhaust fan.

[0016] Preferably, the air quality optimization component includes a second installation cavity and a negative ion generator, and the negative ion generator is fixedly installed inside the second installation cavity.

[0017] Preferably, a maintenance baffle is detachably installed on the back side of the air purification box, a convenient pull handle is fixedly provided on one side of the maintenance baffle, and four clips are fixedly provided on the other side of the maintenance baffle, the clips are connected to the connecting block, and the connecting block is fixedly provided on the inner wall of the air purification box near the maintenance baffle.

[0018] Preferably, the moving mechanism includes a bottom load-bearing base plate, and a universal wheel with a brake is fixedly mounted on the bottom end of the bottom load-bearing base plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This PLC-based smart home air purification device has a sound-absorbing cotton layer on the inner wall of the protective cover installed outside the electric exhaust fan, which can reduce the noise generated by the electric exhaust fan during operation, provide users with a more comfortable living environment, and improve the user experience;

[0021] 2. This PLC-based smart home air purification device, through the use of a negative oxygen ion detector and a negative ion generator, allows users to grasp the changes in the concentration of negative ions in the air in real time, and can adjust it through the negative ion generator to achieve air quality optimization and protect people's health;

[0022] 3. This PLC-based smart home air purification device facilitates the maintenance and management of the device in the later stage of use through the detachable maintenance baffle on the back of the air purification box and the sliding installed dense mesh filter, activated carbon filter plate and formaldehyde purification filter. A portable handle is provided on one side of the maintenance baffle to facilitate the staff to remove the maintenance baffle, thereby improving the convenience and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the air purification box of the present invention;

[0025] Figure 3 This is a schematic diagram of the maintenance baffle structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the partial structure of the filtration and sterilization component of the present invention;

[0027] Figure 5 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0028] Figure 6 Schematic diagram of the electrical connection of the PLC control board of the present invention.

[0029] In the figure: 100, air purification box; 101, PLC control panel; 102, maintenance baffle; 103, convenient pull handle; 104, buckle; 105, connection block; 200, air inlet; 201, electric exhaust fan; 202, protective cover; 203, sound-absorbing cotton layer; 204, air outlet; 300, close-mesh filter; 301, activated carbon filter plate; 302, non-woven fabric layer; 303, formaldehyde purification filter; 304, UV sterilization lamp; 305, built-in handle; 400, first installation cavity; 401, formaldehyde sensor; 402, dust sensor; 403, negative oxygen ion detector; 500, second installation cavity; 501, negative ion generator; 600, load-bearing bottom plate; 601, universal wheel with brake. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1-6 , the present invention provides a technical solution:

[0032] Example 1

[0033] A PLC-based air purification and treatment device for smart homes includes an air purification box 100, an air treatment mechanism is provided inside the air purification box 100, and a moving mechanism is provided at the bottom of the air purification box 100; the air treatment mechanism includes an air extraction component, a filtering and sterilization component is provided at the bottom of the air extraction component, an air quality sensing component is provided on one side of the air extraction component, and an air quality optimization component is provided on the other side; the air extraction component includes an air inlet 200 and an electric exhaust fan 201, the air inlet 200 is fixedly provided on both sides of the bottom of the air purification box 100, a protective cover 202 is fixedly installed on the outside of the electric exhaust fan 201, sound-absorbing cotton layers 203 are provided on both sides of the inner wall of the protective cover 202, and an air outlet 204 is provided on the top of the electric exhaust fan 201.

[0034] By setting the sound-absorbing cotton layer 203, during actual use, when the electric exhaust fan 201 rotates, noise will be generated, and the sound-absorbing cotton layer 203 can absorb part of the noise, thereby reducing the noise generated by the device during operation and improving people's user experience.

[0035] In the present invention, preferably, the filtering and sterilizing component includes a dense mesh filter 300 , which can be pulled out and slidably installed on the inner wall of the air purification box 100 and is located above the air inlet 200 .

[0036] By setting up the dense-mesh filter 300, during actual use, large particles of impurities or hair in the external air can be filtered out, thereby achieving a preliminary air purification effect.

[0037] In the present invention, preferably, an activated carbon filter plate 301 is installed on the top of the dense-mesh filter 300 in a pull-out and sliding manner, and a plurality of carbon particles are inside the activated carbon filter plate 301. The top surface of the activated carbon filter plate 301 is connected to a non-woven fabric layer 302, and photocatalyst particles are arranged between the activated carbon filter plate 301 and the non-woven fabric layer 302.

[0038] By providing the activated carbon filter plate 301 and the non-woven fabric layer 302 , during actual use, harmful gases and soluble impurities in the air can be adsorbed, and insoluble impurities in the air can be filtered, thereby achieving a further air purification effect.

[0039] In the present invention, preferably, a formaldehyde purification filter 303 is installed on the top of the activated carbon filter plate 301 in a retractable and slidable manner, and a UV sterilization lamp 304 is fixedly installed on the top of the formaldehyde purification filter 303. Two UV sterilization lamps 304 are provided and are vertically staggered and fixedly installed on the inner wall of the air purification box 100.

[0040] By setting the formaldehyde purification filter 303, the formaldehyde filtering effect in the air is achieved; by setting the UV sterilization lamp 304, most of the harmful bacteria in the air can be killed, achieving the air purification effect.

[0041] In the present invention, preferably, the dense mesh filter 300 , the activated carbon filter plate 301 and the formaldehyde purification filter 303 are provided with a built-in handle 305 near one end of the back side of the air purification box 100 .

[0042] The built-in handle 305 makes it convenient for maintenance personnel to remove the dense-mesh filter 300, the activated carbon filter plate 301 and the formaldehyde purification filter 303 from the inside of the air purification box 100 for cleaning or replacement, thereby improving maintenance convenience.

[0043] In the present invention, preferably, the air quality sensing component includes a first installation cavity 400 , and a formaldehyde sensor 401 , a dust sensor 402 and a negative oxygen ion detector 403 are fixedly installed inside the first installation cavity 400 .

[0044] By setting up the formaldehyde sensor 401, the dust sensor 402 and the negative oxygen ion detector 403, the air quality can be monitored in real time, so that the user can understand the gas quality in the living space in real time.

[0045] In the present invention, preferably, a PLC control panel 101 is fixedly provided on one side of the air purification box 100, and the PLC control panel 101 is electrically connected to the formaldehyde sensor 401, the dust sensor 402, the negative oxygen ion detector 403, the UV sterilization lamp 304, the negative ion generator 501 and the electric exhaust fan 201.

[0046] Through the setting of the PLC control panel 101, in actual use, it is convenient for users to control various components, thereby improving the convenience of use.

[0047] In the present invention, preferably, the air quality optimization component includes a second installation cavity 500 and a negative ion generator 501 , and the negative ion generator 501 is fixedly installed inside the second installation cavity 500 .

[0048] Through the setting of the negative ion generator 501, during actual use, the user can turn on or off the negative ion generator 501 according to the data fed back from the negative oxygen ion detector 403 displayed on the PLC control panel 101, thereby achieving the effect of regulating the concentration of negative oxygen ions in the air.

[0049] In the present invention, preferably, a maintenance baffle 102 is detachably installed on the back side of the air purification box 100, a convenient pull handle 103 is fixedly provided on one side of the maintenance baffle 102, and four clips 104 are fixedly provided on the other side of the maintenance baffle 102, the clips 104 are snapped into the connecting block 105, and the connecting block 105 is fixedly provided on the inner wall of the air purification box 100 near the maintenance baffle 102.

[0050] By providing the maintenance baffle 102 and the buckle 104 , it is convenient for maintenance personnel to disassemble and maintain the device during actual use, thereby improving work efficiency.

[0051] Example 2

[0052] A PLC-based air purification and treatment device for smart homes includes an air purification box 100, an air treatment mechanism is provided inside the air purification box 100, and a moving mechanism is provided at the bottom of the air purification box 100; the air treatment mechanism includes an air extraction component, a filtering and sterilization component is provided at the bottom of the air extraction component, an air quality sensing component is provided on one side of the air extraction component, and an air quality optimization component is provided on the other side; the air extraction component includes an air inlet 200 and an electric exhaust fan 201, the air inlet 200 is fixedly provided on both sides of the bottom of the air purification box 100, a protective cover 202 is fixedly installed on the outside of the electric exhaust fan 201, sound-absorbing cotton layers 203 are provided on both sides of the inner wall of the protective cover 202, and an air outlet 204 is provided on the top of the electric exhaust fan 201.

[0053] In the present invention, preferably, the filtering and sterilizing component includes a dense mesh filter 300, which can be pulled out and slidably installed on the inner wall of the air purification box 100 and is located above the air inlet 200. An activated carbon filter plate 301 can be pulled out and slidably installed on the top of the dense mesh filter 300. There are several carbon particles inside the activated carbon filter plate 301. The top surface of the activated carbon filter plate 301 is connected to a non-woven fabric layer 302. Between the activated carbon filter plate 301 and the non-woven fabric layer 302, there is a plurality of carbon particles. It is provided with photocatalyst particles, the top of the activated carbon filter plate 301 can be pulled out and slidably installed with a formaldehyde purification filter 303, the top of the formaldehyde purification filter 303 is fixedly installed with a UV sterilization lamp 304, and the UV sterilization lamp 304 is provided with two, and is vertically staggered and fixedly installed on the inner wall of the air purification box 100, the dense mesh filter 300, the activated carbon filter plate 301 and the formaldehyde purification filter 303 are provided with a built-in handle 305 near one end of the back side of the air purification box 100, the air quality sensing component The air quality optimization component includes a first installation cavity 400, wherein a formaldehyde sensor 401, a dust sensor 402 and a negative oxygen ion detector 403 are fixedly installed inside the first installation cavity 400, and a PLC control panel 101 is fixedly provided on one side of the air purification box 100, and the PLC control panel 101 is electrically connected to the formaldehyde sensor 401, the dust sensor 402, the negative oxygen ion detector 403, the UV sterilization lamp 304, the negative ion generator 501 and the electric exhaust fan 201. The second installation cavity 500 and the negative ion generator 501 are fixedly installed inside the second installation cavity 500. The back side of the air purification box 100 is detachably installed with a maintenance baffle 102. A convenient pull handle 103 is fixedly provided on one side of the maintenance baffle 102. Four buckles 104 are fixedly provided on the other side of the maintenance baffle 102. The buckles 104 are clamped to the connecting block 105. The connecting block 105 is fixedly provided on the inner wall of the air purification box 100 near the maintenance baffle 102. The moving mechanism includes a bottom load-bearing base plate 600. The bottom end of the bottom load-bearing base plate 600 is fixedly installed with a braked universal wheel 601. Compared with Example 1, this embodiment 2 adds a bottom load-bearing base plate 600 and a braked universal wheel 601. Although it does not affect the air purification effect of the device, it has a greater impact on the user's experience. The provision of the braked universal wheel 601 can facilitate the user to easily move the device to various use areas, greatly improving the user experience.

[0054] Working principle: First, the device can be easily moved to the required working area through the universal wheel 601 with brakes set on the moving mechanism and the convenient handle 103 fixed on the side of the maintenance baffle 102. Then the device is connected to the power socket and the electric exhaust fan 201, formaldehyde sensor 401, dust sensor 402, negative oxygen ion detector 403 and UV sterilizer 304 are started through the PLC control panel 101. The electric exhaust fan 201 adopts the model of Frig DC9225 turbo silent fan, and the formaldehyde sensor 401 adopts the model of YM- 022 air quality sensor, dust sensor 402 uses model SDS026 sensor, negative oxygen ion detector 403 uses SN-3004-NEGO type micro negative oxygen ion detector 403. When the electric exhaust fan 201 rotates, the external air is sucked in from the air inlet 200, and passes through the close-mesh filter 300, the activated carbon filter plate 301 and the formaldehyde purification filter 303 in sequence, so that large particles of impurities or hair in the external air are blocked by the close-mesh filter 300, and harmful gases and soluble impurities are adsorbed by the activated carbon filter plate 301. The air after preliminary purification flows through the operating area of ​​the UV sterilization lamp 304, which can achieve the effect of disinfecting most viruses and harmful organisms in the air. Finally, the purified air is discharged from the air outlet 204. Among them, the inner wall of the protective cover 202 installed on the outside of the electric exhaust fan 201 is provided with a sound-absorbing cotton layer 203, which can reduce the noise generated by the electric exhaust fan 201 during operation and improve the user experience. In addition, during actual use of the device, the air quality can be understood in real time by observing the data generated by the formaldehyde sensor 401, the dust sensor 402, and the negative oxygen ion detector 403 displayed on the PLC control panel 101. When the concentration of negative ions in the air is lower than the required value, the negative ion generator 501 is started to generate small-particle negative ions into the air, thereby deeply improving the air quality.

[0055] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A PLC-based smart home air purification device, comprising an air purification box (100), characterized in that: An air processing mechanism is provided inside the air purification box (100), and a moving mechanism is provided at the bottom end of the air purification box (100); The air handling mechanism comprises an air extraction component, a filtering and sterilizing component is arranged at the bottom of the air extraction component, an air quality sensing component is arranged on one side of the air extraction component, and an air quality optimization component is arranged on the other side thereof; The air extraction assembly comprises an air inlet (200) and an electric exhaust fan (201), wherein the air inlet (200) is fixedly arranged on both sides of the bottom of the air purification box (100), a protective cover (202) is fixedly installed on the outside of the electric exhaust fan (201), sound-absorbing cotton layers (203) are arranged on both sides of the inner wall of the protective cover (202), and an air outlet (204) is arranged on the top of the electric exhaust fan (201).

2. The PLC-based smart home air purification device according to claim 1, characterized in that: The filtering and sterilizing component comprises a close-mesh filter (300), which can be withdrawn and slidably installed on the inner wall of the air purification box (100) and is located above the air inlet (200).

3. The PLC-based smart home air purification device according to claim 2, characterized in that: An activated carbon filter plate (301) is installed on the top of the dense-mesh filter screen (300) in a retractable and slidable manner, a plurality of carbon particles are contained inside the activated carbon filter plate (301), a non-woven fabric layer (302) is connected to the top surface of the activated carbon filter plate (301), and photocatalyst particles are arranged between the activated carbon filter plate (301) and the non-woven fabric layer (302).

4. The PLC-based smart home air purification device according to claim 3, characterized in that: A formaldehyde purification filter (303) is installed on the top of the activated carbon filter plate (301) in a retractable and slidable manner, and a UV sterilization lamp (304) is fixedly installed on the top of the formaldehyde purification filter (303). Two UV sterilization lamps (304) are provided and are fixedly installed on the inner wall of the air purification box (100) in a vertically staggered manner.

5. The PLC-based smart home air purification device according to claim 3, characterized in that: The dense mesh filter (300), the activated carbon filter plate (301) and the formaldehyde purification filter (303) are provided with a built-in handle (305) at one end close to the back side of the air purification box (100).

6. The PLC-based smart home air purification device according to claim 1, characterized in that: The air quality sensing component comprises a first installation cavity (400), wherein a formaldehyde sensor (401), a dust sensor (402) and a negative oxygen ion detector (403) are fixedly installed inside the first installation cavity (400).

7. The PLC-based smart home air purification device according to claim 1, characterized in that: A PLC control panel (101) is fixedly provided on one side of the air purification box (100), and the PLC control panel (101) is electrically connected to a formaldehyde sensor (401), a dust sensor (402), a negative oxygen ion detector (403), a UV sterilization lamp (304), a negative ion generator (501), and an electric exhaust fan (201).

8. The PLC-based smart home air purification device according to claim 1, characterized in that: The air quality optimization component comprises a second installation cavity (500) and a negative ion generator (501), wherein the negative ion generator (501) is fixedly installed inside the second installation cavity (500).

9. The PLC-based smart home air purification device according to claim 7, characterized in that: A maintenance baffle (102) is detachably mounted on the back side of the air purification box (100); a convenient pull handle (103) is fixedly arranged on one side of the maintenance baffle (102); four buckles (104) are fixedly arranged on the other side of the maintenance baffle (102); the buckles (104) are snap-connected to a connecting block (105); and the connecting block (105) is fixedly arranged on the inner wall of the air purification box (100) close to the maintenance baffle (102).

10. The PLC-based smart home air purification device according to claim 1, characterized in that: The moving mechanism comprises a bottom load-bearing base plate (600), and a universal wheel (601) with a brake is fixedly mounted on the bottom end of the bottom load-bearing base plate (600).

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