Home Air Purifier

Abstract

The present invention belongs to a household air purifier, which is composed of a machine body, a weak current board, and a strong current board. The upper centrifugal wind wheel and the lower centrifugal wind wheel are driven by an upper motor and a lower motor respectively. An Archimedes spiral upper partition plate is arranged at the upper part of the rear space of the machine body around the upper centrifugal wind wheel. The space between the Archimedes spiral upper partition plate and the periphery of the upper centrifugal wind wheel forms an Archimedes spiral upper wind duct. The upper air outlet of the Archimedes spiral upper wind duct is located at the upper end of the machine body. An Archimedes spiral lower partition plate is arranged at the lower part of the rear space of the machine body around the lower centrifugal wind wheel. The space between the Archimedes spiral lower partition plate and the periphery of the lower centrifugal wind wheel forms an Archimedes spiral lower wind duct. The lower air outlet of the Archimedes spiral lower wind duct is located at the side end of the machine body. The present invention has the advantages of small size, small air volume loss, large air volume output, reasonable filter design, high purification efficiency and quietness, time-saving and labor-saving filter material replacement, smooth air outlet, high purification efficiency and good use effect.

Description

Technical Field

[0001] The invention belongs to a household air purifier. Background Art

[0002] At present, there are many types of household air purifiers, most of which have the following shortcomings: small air purification volume, unreasonable filter design, low purification efficiency, high noise, backward connection method, time-consuming and labor-intensive filter material replacement, and many dead corners of air purification. In particular, it is impossible to solve the problem that in order to achieve a large amount of purified air, the number of fans needs to be increased and the size of the purifier needs to be increased. However, the increase in the number of fans will increase the noise, resulting in a contradiction between large filtration air volume, large size and high noise.

[0003] For example, the vehicle-mounted air purifier of Chinese patent publication number CN106314088A has a rectangular body, a centrifugal fan in the middle of the shell, and four filters on the four sides of the centrifugal fan, which has the above problems. The four filters in this patent form a dead angle for air purification, and generate swirl wind resistance, causing the fan blades to generate large noise. The filter design is unreasonable, the purification efficiency is low, and the connection method is backward, and it is time-consuming and laborious to replace the filter material. Summary of the invention

[0004] The purpose of the present invention is to design a household air purifier that can better solve the contradiction between filtering large air volume, small size and small noise, and has the advantages of small size, small air volume loss, large air volume output, reasonable filter design, high purification efficiency and quietness, time-saving and labor-saving replacement of filter materials, smooth air output, high purification efficiency and good use effect.

[0005] To this end, the present invention is composed of a body, a weak current board, and a strong current board, wherein:

[0006] Archimedes spiral upper and lower air ducts: The inner partition is used to divide the inner space of the machine body into the front space of the machine body and the rear space of the machine body. The inner partition is provided with upper and lower air inlets at intervals. The upper centrifugal wind wheel and the lower centrifugal wind wheel driven by the upper motor and the lower motor are respectively provided in the upper and lower parts of the rear space of the machine body. An Archimedes spiral upper partition is provided in the upper part of the rear space of the machine body around the upper centrifugal wind wheel, and the space between the Archimedes spiral upper partition and the periphery of the upper centrifugal wind wheel forms the Archimedes spiral upper air duct. The upper air outlet of the Archimedes spiral upper air duct is located at the upper end of the machine body. An Archimedes spiral lower partition is provided in the lower part of the rear space of the machine body around the lower centrifugal wind wheel. The space between the Archimedes spiral lower partition and the periphery of the lower centrifugal wind wheel forms the Archimedes spiral lower air duct, and the lower air outlet of the Archimedes spiral lower air duct is located at the side end of the machine body. The inner partition of the machine body closes the corresponding front end faces of the Archimedes spiral upper and lower air ducts. The upper and lower air inlets are connected to the upper and lower centrifugal wind wheel suction ports respectively. The rear end plate closes the rear end surfaces of the upper and lower air ducts of the Archimedes spiral, and a side air outlet is arranged on the side wall of the rear end plate corresponding to the lower air outlet of the lower air duct of the Archimedes spiral.

[0007] A clamping groove for clamping a horizontal filter is arranged in the front space of the machine body at the front end of the inner partition at a distance from the inner partition.

[0008] A set-top box is provided at the upper end of the machine body, and an operation panel is provided at the upper end of the set-top box. A box air duct and an upper air outlet are provided in the set-top box and on one side of the operation panel, which are connected to the air outlet of the upper air duct on the Archimedean spiral. A weak current board is provided on the other side of the set-top box. A base is provided at the lower end of the machine body, and a strong current board is provided in the base. Universal wheels are provided at the four corners of the lower end of the base.

[0009] The filter is used to filter and purify the air entering the upper and lower air ducts on the Archimedean spiral. The filter is located in a card slot at the front end of the machine body. The front mesh plate located at the front end of the machine body fixes the filter in the card slot.

[0010] The household air purifier is in the shape of a rectangle.

[0011] The upper and lower air ducts of the Archimedean spiral are independent of each other. The Archimedean spiral upper partition plate is an Archimedean spiral plate formed with the upper centrifugal wind wheel as the center. The Archimedean spiral lower partition plate is an Archimedean spiral plate formed with the lower centrifugal wind wheel as the center.

[0012] The side air outlet is provided with a side screen. The upper air outlet of the operation panel is provided with a screen.

[0013] The filter is in the shape of a rectangle.

[0014] The filter is composed of a rectangular frame and a sheet filter material that is folded into a zigzag shape and located in the rectangular frame. The four sides of the sheet filter material are sealed and fixed to the corresponding inner wall of the rectangular frame. The sheet filter material is composed of a fiber layer located on the upper and lower end surfaces and an activated carbon mixed adsorption layer located between the two fiber layers. The fiber layer is a spunbond non-woven fabric or non-woven fabric that is conducive to air passage and has supporting strength. The fiber layer thickness is 1 to 3 mm, and the activated carbon mixed adsorption layer thickness is 3 to 6 mm.

[0015] The weight ratio of materials used in the activated carbon mixed adsorption layer is 6-9 parts of chemical activated carbon, 8-10 parts of coconut shell activated carbon, 5-8 parts of nano silver, 22-28 parts of fiber, and 7-10 parts of polyethylene hot-melt powder. The fiber layer and the activated carbon mixed adsorption layer are pressurized, heated, and formed into an integrated structure in a serrated pressurized and heated mold.

[0016] The filter is composed of a front sealing plate and a rear sealing plate, the fitting surfaces of the front sealing plate and the rear sealing plate are connected to each other by mortise and tenon, spherical filter chambers are arranged at intervals on the fitting surfaces of the front sealing plate and the rear sealing plate, a trumpet-shaped air inlet duct communicating with the front end of the corresponding filter chamber is arranged on the front sealing plate corresponding to each spherical filter chamber, an inverted trumpet-shaped air outlet duct communicating with the rear end of the corresponding filter chamber is arranged on the rear sealing plate corresponding to each spherical filter chamber, and an activated carbon adsorption filter ball is arranged in the spherical filter chamber.

[0017] The activated carbon adsorption filter ball is prepared by mixing 5-8 parts of chemical activated carbon, 3-6 parts of coal-based granular activated carbon, 5-8 parts of coconut shell activated carbon, 2-3 parts of nano silver, 2-3 parts of nano zinc oxide, 22-28 parts of fiber and 8-10 parts of polyethylene hot melt powder.

[0018] The above structure achieves the purpose of the present invention.

[0019] The present invention can better solve the contradiction between filtering large air volume, small size and small noise, and has the advantages of small size, small air volume loss, large air volume output, reasonable filter design, high purification efficiency and quietness, time-saving and labor-saving replacement of filter materials, smooth air output, high purification efficiency and good use effect.

[0020] The present invention has the following advantages over traditional household air purifiers:

[0021] 1. Quiet. The present invention adopts a double air duct arrangement of upper and lower air ducts of Archimedean spirals distributed up and down inside the purifier. The opening direction of the upper air duct of Archimedean spiral faces upward, and the opening direction of the lower air duct of Archimedean spiral faces left. It not only saves and fully utilizes the space in the machine body, but also realizes the compatibility of the double air ducts. At the same time, the shapes of the two air ducts are Archimedean spirals. When the upper and lower centrifugal wind wheels rotate, a strong suction force is generated to suck the gas into the machine body from the many mesh holes of the front mesh plate. After being filtered by the filter, the gas is evenly thrown out from the upper and lower centrifugal wind wheels respectively by the high-speed rotation of the upper and lower centrifugal wind wheels. Using the principle of Archimedean spiral, the gas is pressed out from the narrow part of each air duct to the wide direction along one direction, and finally rushes out from the release port with reduced pressure (the arrow is the direction of wind flow). The present invention uses Archimedean spirals, adjusts the shape of the air inlet and outlet, the distance between the filter and the upper and lower centrifugal wind wheels, the shape of the fan air inlet and other series of measures, greatly reducing wind loss and wind noise, and maximizing the air volume output. The present invention can increase the filtered air volume by 30% to 50% compared with similar products of similar volume while ensuring the miniaturization of the volume, thereby obtaining higher purification performance. The wind loss and wind noise are 60 to 70% lower than similar products. The present invention has a large filtering surface and no dead angles for wind resistance, a small filter wind resistance, a large and uniform filtered air volume, and a good mute effect.

[0022] 2. High purification efficiency. The filter of the present invention can not only filter out large dust particles in the air, but also its composite material of fiber material and composite activated carbon can effectively kill bacteria, molds, viruses, and adsorb and decompose odors, formaldehyde, benzene, xylene, toluene, TVOC and other harmful gases. It can effectively adsorb and purify ultrafine suspended particles with a particle size of about 0.005μm in the air with extremely strong penetration, such as heavy metal powder, dust, pollen, abrasive particles, flue gas, spores, liquid particles, cigarette smoke, viruses, carbon black, soot, combustion nuclei and more than 80 kinds of harmful suspended matter and suspended particles. The purification efficiency is as high as 99.972%, the resistance is only 32Pa, and the antibacterial level for Staphylococcus aureus is 5.2 (standard antibacterial level ≥2.0). During the CADR value test, the formaldehyde clean air volume reached 430m 3 / h, the dust clean air volume reaches 820m 3 / h(National standard: clean air volume 170m 3 / h is national A grade). Tests show that the iodine adsorption value of the present invention is 1100-1200 mg / g, the benzene adsorption value mg / g≥700, and the specific surface area m 2 / g≥1800, pH value 7~8, strength %≥96. The bactericidal and antibacterial rate of bacteria and viruses can reach 99.5%. The deodorization rate is more than 99%. The noise is only 55 decibels.

[0023] 3. Replacing filter materials saves time and effort. The filter of the present invention is located in the card slot at the front end of the body, and the front mesh plate located at the front end of the body fixes the filter in the card slot. To replace the filter, you only need to remove the front mesh plate, which improves the convenience of opening and closing to replace the filter for consumers and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view split structure schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the rear view split structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the overall appearance and wind direction flow structure of the present invention.

[0027] Figure 4 The figure is a schematic diagram of the upper and lower wind duct distribution and wind direction flow structure of the Archimedean spiral of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the filter of the present invention.

[0029] Figure 6 It is a schematic structural diagram of another filter of the present invention. DETAILED DESCRIPTION

[0030] like Figures 1 to 4As shown, a household air purifier is composed of a body 4, a weak current board 6, and a strong current board 11. The household air purifier is rectangular. A set-top box 5 is provided at the upper end of the body of the present invention, and handrail grooves 28 are provided on the two outer sides of the set-top box to facilitate the movement of the body. An operation panel 7 is provided at the upper end of the set-top box.

[0031] A box air duct 20 and an upper wind outlet 19 are provided in the set-top box and on one side of the operation panel, which are connected to the air outlet of the upper wind duct 21 of the Archimedean spiral. A weak current board is provided on the other side of the set-top box. The weak current board is located in the set-top box and in a sealed space surrounded by the operation panel and the side wall of the box air duct. The weak current board is used to send a control signal, and a touch LCD screen is provided at the upper end of the weak current board. The touch LCD screen is an operation interface for controlling the operation of the machine of the present invention, which is located at the top of the operation panel, next to the upper air outlet. The appearance of the operation interface is a semi-transparent PC material, and the touch LCD screen is closely attached to the weak current board for signal control. A control integrated circuit component is provided in the weak current board, and a human hand can touch the touch LCD screen below through the surface PC panel to sense the touch LCD screen, and touch to issue instructions such as changing wind speed and mode. The touch LCD screen can also display the detection values ​​of the five-in-one sensor 14 in the machine body, such as PM2.5 concentration display, carbon dioxide concentration display, formaldehyde concentration display, temperature display and humidity display. The probe of the five-in-one sensor can be located in the upwind outlet or in the box air duct.

[0032] A base 10 is provided at the lower end of the machine body, and a strong current board is provided in the base. Universal wheels 9 are provided at the four corners of the lower end of the base for easy movement of the machine body. The strong current board is provided with components and circuits for controlling the operation of the upper and lower motors of 220V. The weak current board is connected to the strong current board through a signal line, and the signal line is buried in a wire groove that runs through the machine body from top to bottom. When the touch LCD screen is touched by the user to generate an instruction, the weak current board can transmit the instruction to the strong current board through the signal line, and the strong current board can control the strong current to adjust the number of revolutions of the motor. (The two circuits are separated to prevent the strong current from interfering with the weak current).

[0033] The machine body is divided into a front space and a rear space by an inner partition 29 in the longitudinal direction. An upper air inlet 27 and a lower air inlet 26 are provided on the inner partition at intervals. An upper centrifugal wind wheel 18 and a lower centrifugal wind wheel 15 driven by an upper motor 17 and a lower motor 12 are provided in the upper and lower parts of the rear space of the machine body. Motor covers 13 are provided on the upper and lower motors corresponding to the end faces of the upper and lower centrifugal wind wheels to protect the upper and lower motors.

[0034] The upper motor drives the upper centrifugal wind wheel, and the air suction port of the upper centrifugal wind wheel is the upper air inlet. An Archimedes spiral upper partition plate 22 is provided in the upper part of the rear space of the machine body surrounding the upper centrifugal wind wheel. The space between the Archimedes spiral upper partition plate and the periphery of the upper centrifugal wind wheel forms an Archimedes spiral upper wind duct 21. The upper air outlet 19 of the Archimedes spiral upper wind duct is located at the upper end of the machine body. An upper screen plate 8 is provided on the upper wind outlet of the operation panel.

[0035] The lower motor drives the lower centrifugal wind wheel, the air suction port of the lower centrifugal wind wheel is the lower air inlet, and the lower part of the rear space of the machine body surrounding the lower centrifugal wind wheel is provided with an Archimedes spiral lower partition plate 24. The space between the Archimedes spiral lower partition plate and the periphery of the lower centrifugal wind wheel forms an Archimedes spiral lower air duct 25. The lower air outlet of the Archimedes spiral lower air duct is located at the side end of the machine body.

[0036] The partition in the machine body closes the corresponding front end faces of the upper and lower air ducts of the Archimedean spiral. The upper and lower air inlets are respectively connected to the upper and lower centrifugal wind wheel suction ports. The rear end plate 16 closes the rear end faces of the upper and lower air ducts of the Archimedean spiral, and a side air outlet 23 is provided on the side wall of the rear end plate corresponding to the lower air outlet of the lower air duct of the Archimedean spiral. The side air outlet is provided with a side mesh plate 3.

[0037] The upper and lower air ducts of the Archimedean spiral are independent of each other. The Archimedean spiral upper partition plate is an Archimedean spiral plate formed with the upper centrifugal wind wheel as the center. The Archimedean spiral lower partition plate is an Archimedean spiral plate formed with the lower centrifugal wind wheel as the center.

[0038] A clamping slot 30 for clamping a horizontal filter is provided in the front space of the machine body at the front end of the inner partition at a distance from the inner partition.

[0039] The filter 2 is used to filter and purify the air entering the upper and lower air ducts of the Archimedean spiral. The filter is located in a card slot at the front end of the machine body, and the front mesh plate 1 located at the front end of the machine body fixes the filter in the card slot.

[0040] The filter is in the shape of a rectangle.

[0041] like Figure 5 As shown, the filter is composed of a rectangular frame 31 and a sheet filter material 32 which is folded into a zigzag shape and located in the rectangular frame. The four sides of the sheet filter material are sealed and fixed to the inner wall of the corresponding rectangular frame so that air can only enter the upper and lower air inlets through the sheet filter material. The sheet filter material is composed of a fiber layer 33 located at the upper and lower end surfaces and an activated carbon mixed adsorption layer 34 located between the two fiber layers. The fiber layer is a spunbond nonwoven or nonwoven fabric that is conducive to air passing through and has a supporting strength. The fiber diameter is 10 to 25 μm, the fiber layer thickness is 1 to 3 mm, and the thickness of the activated carbon mixed adsorption layer is 3 to 6 mm.

[0042] The weight ratio of the materials used in the activated carbon mixed adsorption layer is 6-9 parts of chemical activated carbon, 8-10 parts of coconut shell activated carbon, 5-8 parts of nano silver, 22-28 parts of fiber, and 7-10 parts of polyethylene hot melt powder. The fiber layer and the activated carbon mixed adsorption layer are pressurized, heated, and shaped in a serrated pressurized and heated mold to form an integrated structure.

[0043] like Figure 6 As shown, it is a schematic diagram of the structure of another filter of the present invention, the filter is composed of a front sealing plate 36 and a rear sealing plate 39, the fitting surfaces of the front sealing plate and the rear sealing plate are connected to each other by a tenon 38, and a plurality of spherical filter chambers 35 are densely distributed on the fitting surfaces of the front sealing plate and the rear sealing plate at intervals, and a trumpet-shaped air inlet duct 37 communicating with the front end of the corresponding filter chamber is provided on the front sealing plate corresponding to each spherical filter chamber, and an inverted trumpet-shaped air outlet duct 41 communicating with the rear end of the corresponding filter chamber is provided on the rear sealing plate corresponding to each spherical filter chamber. An activated carbon adsorption filter ball 40 is provided in the spherical filter chamber.

[0044] Each group of trumpet-shaped air inlets, inverted trumpet-shaped air outlets and spherical filter chambers form a jet pressurized air duct structure. The airflow entering from each group of trumpet-shaped air inlets forms a rotating flow in the spherical filter chamber and passes through the activated carbon adsorption filter ball inside. The harmful substances in the airflow are adsorbed or neutralized by the activated carbon in the activated carbon adsorption filter ball, and the clean air is discharged from the filter through the inverted trumpet-shaped air outlet. Then it is discharged from the body through the upper and lower air ducts on the Archimedean spiral. Obviously, the airflow entering from each group of trumpet-shaped air inlets is generated by the suction force formed by the upper and lower centrifugal wind wheels driven by the high-speed rotating upper and lower motors. Since the upper and lower air inlets of the upper and lower centrifugal wind wheels are both located on the inner partition, the inner partition and the rear end surface of the filter are set at a distance, and the space formed between the two acts as a pressure equalizer, which can ensure that the airflow passes through the filter evenly.

[0045] The activated carbon adsorption filter ball is made of 5-8 parts of chemical activated carbon, 3-6 parts of coal-based granular activated carbon, 5-8 parts of coconut shell activated carbon, 2-3 parts of nano silver, 2-3 parts of nano zinc oxide, 22-28 parts of fiber, and 8-10 parts of polyethylene hot melt powder. The fiber is spunbond nonwoven, nonwoven fabric, polyester fiber felt, and the fiber diameter is 10-25μm. You can first mix equal parts of chemical activated carbon, coal-based granular activated carbon, coconut shell activated carbon, nano silver, nano zinc oxide, fiber, and polyethylene hot melt powder, and then place them in a spherical pressurized and heated mold, pressurized and heated to shape, and the pressure is 10-20kg / cm 2 , temperature 115℃, time 1 minute, to obtain activated carbon adsorption filter ball. The ball diameter of the activated carbon adsorption filter ball is 2 to 5 cm.

[0046] When in use, the high-speed rotating upper and lower motors drive the upper and lower centrifugal wind wheels to rotate respectively. The upper and lower centrifugal wind wheels rotate to generate strong suction, and the indoor air (the arrows in each figure indicate the direction of wind flow) is successively sucked into the upper and lower centrifugal wind wheels through the front mesh plate, filter filtration, upper and lower air inlets, and then thrown into the upper and lower air ducts of the Archimedes spiral. Finally, the gas in the upper air duct of the Archimedes spiral is thrown out from the upper air outlet, and the gas in the lower air duct of the Archimedes spiral is thrown out from the side air outlet. The filter is in the path where the gas is sucked into the respective air ducts from front to back. The filter has the ability to filter particulate matter and adsorb harmful chemicals, but it has great resistance. With the help of strong suction, the filter will absorb, neutralize and purify the harmful components in the gas to be purified through its own fiber material and different combinations of activated carbon mixed adsorbents, and the filtration efficiency is very outstanding. The gas thrown out through each air duct becomes clean air. The five-in-one sensor can detect the concentration of five harmful components in the air and feed the signal back to the weak current board. On the one hand, it displays the data on the LCD screen, and on the other hand, it serves as the basis for automatic control of the air volume when the purifier is in automatic operation mode.

[0047] like Figure 6 The filter shown is a replaceable activated carbon adsorption filter ball. When the tenons of the front and rear sealing plates are separated, the spherical filter chamber is divided into two hemispheres, and the activated carbon adsorption filter ball inside can be replaced. Otherwise, an integrated filter is formed. The replaced activated carbon adsorption filter balls can be uniformly recycled and reused.

[0048] In summary, the present invention can better solve the contradiction between filtering large air volume, small size and small noise. It has the advantages of small size, small air volume loss, large air volume output, reasonable filter design, high purification efficiency and quietness, time-saving and labor-saving replacement of filter materials, smooth air output, high purification efficiency and good use effect.

Claims

1. A household air purifier, consisting of a body, a weak current board, and a strong current board, characterized in that: The Archimedean spiral upper and lower air ducts, the inner space of the machine body is divided into the front space and the rear space of the machine body by the inner partition in the longitudinal direction, the upper and lower air inlets are arranged on the inner partition at a distance from each other, the upper and lower distributions of the rear space of the machine body are arranged, and the upper centrifugal wind wheel and the lower centrifugal wind wheel driven by the upper motor and the lower motor are respectively arranged in the upper and lower parts, the upper part of the rear space of the machine body surrounding the upper centrifugal wind wheel is provided with an Archimedean spiral upper partition plate, the space between the Archimedean spiral upper partition plate and the periphery of the upper centrifugal wind wheel forms the Archimedean spiral upper air duct, the upper air outlet of the Archimedean spiral upper air duct is located at the upper end of the machine body, and the rear space of the machine body surrounding the lower centrifugal wind wheel is provided with an upper centrifugal wind wheel. The lower part is provided with an Archimedean spiral lower partition plate, and the space between the Archimedean spiral lower partition plate and the periphery of the lower centrifugal wind wheel forms an Archimedean spiral lower wind duct, and the lower air outlet of the Archimedean spiral lower wind duct is located at the side end of the machine body, and the internal partition plate of the machine body closes the corresponding front end surfaces of the upper and lower wind ducts of the Archimedean spiral, and the upper and lower air inlets are respectively connected to the upper and lower centrifugal wind wheel suction ports, and the rear end plate closes the rear end surfaces of the upper and lower wind ducts of the Archimedean spiral, and a side air outlet is provided on the side wall of the rear end plate corresponding to the lower air outlet of the Archimedean spiral lower wind duct; a card slot for a card-lying filter is provided in the front space of the machine body at the front end of the inner partition plate at a distance from the inner partition plate; A set-top box is arranged at the upper end of the machine body, an operation panel is arranged at the upper end of the set-top box, a box air duct and an upper air outlet are arranged inside the set-top box and on one side of the operation panel, and a weak current board is arranged on the other side of the set-top box. A base is arranged at the lower end of the machine body, a strong current board is arranged inside the base, and universal wheels are arranged at the four corners of the lower end of the base. The filter is used to filter and purify the air entering the upper and lower air ducts on the Archimedean spiral. The filter is located in a slot at the front end of the body, and the front mesh plate located on the front end surface of the body fixes the filter in the slot; the filter is composed of a front sealing plate and a rear sealing plate, the fitting surfaces of the front sealing plate and the rear sealing plate are connected to each other as a whole through a tenon, and spherical filter chambers are provided at intervals on the fitting surfaces of the front sealing plate and the rear sealing plate, and a trumpet-shaped air inlet duct communicating with the front end of the corresponding filter chamber is provided on the front sealing plate corresponding to each spherical filter chamber, and an inverted trumpet-shaped air outlet duct communicating with the rear end of the corresponding filter chamber is provided on the rear sealing plate corresponding to each spherical filter chamber, and an activated carbon adsorption filter ball is provided in the spherical filter chamber; when the tenon of the fitting surface of the front sealing plate and the rear sealing plate is separated, the spherical filter chamber is divided into two hemispheres, and the activated carbon adsorption filter ball inside can be replaced, otherwise an integrated filter is formed; The activated carbon adsorption filter ball is prepared by mixing 5-8 parts of chemical activated carbon, 3-6 parts of coal-based granular activated carbon, 5-8 parts of coconut shell activated carbon, 2-3 parts of nano silver, 2-3 parts of nano zinc oxide, 22-28 parts of fiber and 8-10 parts of polyethylene hot melt powder.

2. The household air purifier according to claim 1, characterized in that: The household air purifier is in the shape of a rectangle.

3. The household air purifier according to claim 1, characterized in that: The upper and lower air ducts of the Archimedean spiral are independent of each other. The upper partition plate of the Archimedean spiral is an Archimedean spiral plate formed with the upper centrifugal wind wheel as the center, and the lower partition plate of the Archimedean spiral is an Archimedean spiral plate formed with the lower centrifugal wind wheel as the center.

4. The household air purifier according to claim 1, characterized in that: The side air outlet is provided with a side mesh plate.

5. The household air purifier according to claim 1, characterized in that: A net plate is arranged on the upper air outlet of the operation panel.

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