Dust-air separating mechanism for a vacuum cleaner

Abstract

The application discloses a dust-gas separation mechanism for a dust collector and the dust collector. The dust-gas separation mechanism comprises a shell, an end cover and a HEPA. The end cover is matched with the shell to form a containing cavity. The HEPA is arranged in the shell. An air inlet is arranged on the shell. An air outlet is arranged on the end cover. The dust-gas separation mechanism further comprises a blocking ring, a suction motor and a plurality of adsorption pieces. The blocking ring is arranged in the shell. The blocking ring divides the containing cavity into an inner cavity and an outer cavity. The HEPA is arranged in the inner cavity. The adsorption pieces are arranged in the outer cavity. A communication port is arranged on the blocking ring and communicates the inner cavity and the outer cavity. The shell is a non-conductive shell. The end cover is a non-conductive end cover. The adsorption pieces are conductive adsorption pieces. The surface roughness Ra of the adsorption pieces is greater than 6.3. The suction motor is arranged on the end cover. The suction motor is used for sucking gas into the outer cavity through the air inlet and then into the inner cavity through the communication port.

Description

Technical Field

[0001] This invention relates to the field of vacuum cleaners, and more particularly to a dust-air separation mechanism for vacuum cleaners. Background Technology

[0002] Vacuum cleaners are a common household appliance. Because the air vacuum cleaner sucks up contains a lot of dust, the air expelled from the vacuum cleaner needs to be filtered before it can re-enter the environment. Most household vacuum cleaners currently use HEPA (High-Efficiency Particulate Air) filters to filter the air. While HEPA filters can effectively remove some dust from the air, they can only filter dust particles larger than 0.5μm. For dust particles smaller than 0.5μm, they cannot effectively filter them. Therefore, when vacuuming, current vacuum cleaners actually increase the amount of suspended particles (dust) smaller than 0.5μm in the air, and these smaller particles further increase the probability of HEPA filters becoming clogged. Summary of the Invention

[0003] To address the above-mentioned problems, this invention proposes a dust-air separation mechanism for a vacuum cleaner and a vacuum cleaner in general.

[0004] The technical solution adopted in this invention is as follows:

[0005] A dust-air separation mechanism for a vacuum cleaner includes a housing, an end cap, and a HEPA filter. The end cap and housing are fitted together to form a receiving cavity. The HEPA filter is disposed inside the housing. The housing has an air inlet, and the end cap has an air outlet. The mechanism also includes a retaining ring, a suction motor, and multiple suction plates. The retaining ring is disposed inside the housing, dividing the receiving cavity into an inner cavity and an outer cavity. The HEPA filter is disposed inside the inner cavity, and the suction plates are disposed inside the outer cavity. The retaining ring has a connecting port between the inner and outer cavities. The housing and end cap are non-conductive, and the suction plates are conductive, with a surface roughness Ra value greater than 6.3. The suction motor is disposed at the end cap. The suction motor draws gas into the outer cavity through the air inlet, then into the inner cavity through the connecting port, and finally out through the air outlet after being filtered by the HEPA filter.

[0006] In this dust-gas separation mechanism, the adsorption plate needs to be energized during use to create an electric field. Dust particles, which carry a large amount of charge, are adsorbed onto the adsorption plate when passing through this electric field. Furthermore, because the surface roughness Ra value of the adsorption plate is greater than 6.3, it is a relatively rough adsorption plate, ensuring that the adsorbed dust adheres to it and is prevented from being carried away by the airflow. After adsorption, most dust particles are adsorbed onto the plate. However, since some larger particles may not be adsorbed during the adsorption stage due to their relatively high kinetic energy, a HEPA filter is used to further adsorb these larger dust particles, ensuring that most particles are processed by this dust-gas separation mechanism without any residual dust.

[0007] In summary, in this dust-gas separation mechanism, by setting a conductive adsorption sheet and energizing the adsorption sheet during operation, several electric fields are formed by the adsorption sheet, and the dust particles are adsorbed by utilizing the efficiency of the electric field. Dust particles of different sizes can be adsorbed and attached to the adsorption sheet.

[0008] In this structure, the air extraction motor can be used to extract air at the air outlet; it is actually an air extraction pump.

[0009] Optionally, the adsorption sheet includes a main adsorption sheet and a secondary adsorption sheet, both of which are disposed on a retaining ring and located within the outer cavity, without contact between them.

[0010] Specifically, both sides of the main adsorption plate and the auxiliary adsorption plate are tightly attached to the baffle ring and the shell. In order to ensure that the gas can flow smoothly from the outer cavity into the inner cavity, a gap (i.e., no contact) is set between the main adsorption plate and the auxiliary adsorption plate. This gap is the channel for gas flow. After entering the outer cavity from the air inlet, the gas can flow through this channel.

[0011] Optionally, the retaining ring includes a main retaining ring and a secondary retaining ring, with the main adsorption sheet disposed on the main retaining ring and the secondary adsorption sheet disposed on the secondary retaining ring.

[0012] Specifically, the main baffle ring, the secondary baffle ring, and the shell form an outer cavity. When the gas flows in the outer cavity, the dust is adsorbed by the main adsorption plate or the secondary adsorption plate.

[0013] Optionally, the two sides of the main adsorption sheet are respectively attached to the outer wall of the baffle ring and the inner wall of the shell, and the two sides of the secondary adsorption sheet are respectively attached to the outer wall of the baffle ring and the inner wall of the shell.

[0014] Both the main adsorption plate and the auxiliary adsorption plate are tightly attached to the retaining ring and the housing to ensure the adsorption efficiency of dust.

[0015] Optionally, the main adsorption plate and the auxiliary adsorption plate form a stepped channel. In use, the air inlet is located below the stepped channel, and the air outlet is located above the stepped channel.

[0016] Specifically, the step-like channel formed by the main adsorption plate and the auxiliary adsorption plate refers to the step-like distribution of the gaps between the main adsorption plate and the auxiliary adsorption plate. The air inlet is located below the step-like channel, and the air outlet is located above the step-like channel. This design makes the path of the gas in the outer cavity roughly a spiral path, increasing the time the gas stays in the outer cavity and improving the adsorption rate of dust.

[0017] Optionally, the adsorption sheet is an arc-shaped adsorption sheet, and when gas enters the shell, the gas is blown towards the inner arc surface of the adsorption sheet.

[0018] The use of arc-shaped adsorption plates is to increase the contact area between the gas and the adsorption plate, thereby increasing the amount of dust adsorbed from the gas.

[0019] Optionally, the HEPA is a cylindrical HEPA, and the air outlet is a circular air outlet with a diameter smaller than the inner diameter of the HEPA.

[0020] The HEPA filter is cylindrical, so the filtered gas exits through the outlet after passing through it. This cylindrical shape ensures that gas flows evenly into the HEPA filter from all directions. Because the gas flows in evenly, the airflow velocities in each direction cancel each other out, preventing a "whistling" sound (a sharp noise produced by the gas flowing through) and minimizing vibration during operation. It also significantly reduces the probability of HEPA filter clogging.

[0021] Optionally, it may also include a thermoelectric cooler disposed on the adsorption sheet.

[0022] Specifically, the function of the semiconductor cooling chip is to cool the adsorption plate, causing water vapor in the gas to condense and adhere to the adsorption plate. The condensed water vapor can further dissolve the dust, improving the adhesion stability of the dust on the adsorption plate. At the same time, because the surface of the adsorption plate is relatively rough (Ra value greater than 6.3), the adhesion of water droplets after they adhere to the adsorption plate is relatively large. In addition, the adsorption plate itself is arc-shaped (not flat), so the water droplets do not flow easily. Therefore, the condensed water droplets can adhere stably to the adsorption plate and will not flow away from the adsorption plate.

[0023] Specifically, to prevent the condensate from freezing, the semiconductor cooling chip will cool the adsorption, maintaining the temperature of the adsorption chip between 0℃ and 4℃. Maintaining the adsorption chip at this temperature can effectively condense the water in the gas and prevent the small water droplets from freezing.

[0024] Optionally, it also includes ultraviolet lamp beads, which are disposed at the retaining ring, the end cap, or the housing, wherein the housing is an opaque housing and the end cap is an opaque end cap.

[0025] Specifically, the UV LED can be located on the baffle ring (including the main baffle ring or the auxiliary baffle ring), on the end cap, or on the housing. Through the above structural design, the function of the UV LED is to emit ultraviolet light. When ultraviolet light irradiates the air, it can produce ozone. When ozone comes into contact with water, it produces a trace amount of hydrogen superoxide (which has extremely strong oxidizing properties, but extremely poor stability and is easily decomposed by heat). Since the surface temperature of the adsorption plate is relatively low (between 0℃ and 4℃), the relatively low temperature allows the hydrogen superoxide to exist on the surface of the adsorption plate for a relatively long time (hydrogen superoxide is not easily decomposed at low temperatures). When the gas passes through the adsorption plate, it will come into contact with the adsorption plate, thus killing pathogenic microorganisms (including bacteria and viruses) in the gas, ensuring that the content of pathogenic microorganisms in the gas leaving the HEPA filter is low or virtually non-existent.

[0026] In this type of dust-gas separation mechanism, because the droplets on the adsorption plate do not easily flow on the plate, the dust in the gas adheres to the water droplets, further increasing the viscosity of the droplets and making the water droplets adhere more stably to the adsorption plate. Therefore, after a period of use, the main and secondary baffle rings need to be cleaned to remove the contaminants (from the gas) that have adhered to them. Some of the larger particles may fall into the housing.

[0027] Optionally, the housing is a cylindrical housing, and the end cap is a disc-shaped end cap.

[0028] A vacuum cleaner employs the dust-air separation mechanism shown above.

[0029] The beneficial effects of this invention are: by setting a conductive adsorption sheet and making the adsorption sheet energized during operation, several electric fields are formed by the adsorption sheet, and dust particles are adsorbed by utilizing the efficiency of the electric field. Dust particles of different sizes can be adsorbed and attached to the adsorption sheet. Attached Figure Description

[0030] Figure 1 This is a simplified schematic diagram of a dust-air separation mechanism used in a vacuum cleaner;

[0031] Figure 2 This is a top view of the dust-air separation mechanism used in a vacuum cleaner;

[0032] Figure 3 yes Figure 2 A simplified cross-sectional diagram along the AA direction;

[0033] Figure 4 This is a simplified explosion diagram of a dust-air separation mechanism used in a vacuum cleaner;

[0034] Figure 5 This is a simplified structural diagram of the main retaining ring;

[0035] Figure 6 This is a simplified schematic diagram of the secondary retaining ring.

[0036] Figure 7 This is a schematic diagram of the main adsorption sheet arrangement.

[0037] The labels in the attached figures are as follows: 1. Suction motor; 2. End cap; 201. Air outlet; 3. HEPA filter; 401. Secondary end cap; 4011. Connecting port; 402. Main end cap; 501. Secondary adsorption sheet; 502. Main adsorption sheet; 5021. Burr; 6. Housing; 601. Air inlet; 701. Inner cavity; 702. Outer cavity; 8. Cooling element; 9. Ultraviolet lamp bead; 10. Plastic film. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings.

[0039] Example 1

[0040] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, a dust-air separation mechanism for a vacuum cleaner includes a housing 6, an end cap 2, and a HEPA filter 3. The end cap 2 and the housing 6 are fitted together to form a receiving cavity. The HEPA filter 3 is disposed inside the housing 6. The housing 6 has an air inlet 601, and the end cap 2 has an air outlet 201. It also includes a retaining ring, a suction motor 1, and multiple suction plates. The retaining ring is disposed inside the housing 6, dividing the receiving cavity into an inner cavity 701 and an outer cavity 702. The HEPA filter 3 is disposed inside the inner cavity 701, and the suction plates are disposed in the outer cavity 702. Inside 02, the retaining ring is provided with a connecting port 4011 that connects the inner cavity 701 and the outer cavity 702. The housing 6 is a non-conductive housing 6, the end cap 2 is a non-conductive end cap 2, and the adsorption sheet is a conductive adsorption sheet with a surface roughness Ra value greater than 6.3. The vacuum motor 1 is located at the end cap 2. The vacuum pump is used to draw gas into the outer cavity 702 through the air inlet 601, and then into the inner cavity 701 through the connecting port 4011. After being filtered by HEPA 3, it leaves through the air outlet 201.

[0041] In this dust-gas separation mechanism, the adsorption plate needs to be energized during use to create an electric field. Dust particles, which carry a large amount of charge, are adsorbed onto the adsorption plate when passing through this electric field. Furthermore, because the surface roughness Ra value of the adsorption plate is greater than 6.3, it is a relatively rough adsorption plate, ensuring that the adsorbed dust adheres to it and is prevented from being carried away by the airflow. After adsorption, most dust particles are adsorbed onto the plate. However, since some larger particles may not be adsorbed during the adsorption stage due to their relatively high kinetic energy, a HEPA filter is installed to further adsorb these larger dust particles, ensuring that most particles are treated by this dust-gas separation mechanism without any residue.

[0042] In summary, in this dust-gas separation mechanism, by setting a conductive adsorption plate and energizing the adsorption plate during operation, several electric fields are formed by the adsorption plate, and the dust particles are adsorbed by the efficiency of the electric field. Dust particles of different sizes can be adsorbed and attached to the adsorption plate.

[0043] In this structure, the air extraction motor 1 can be used to extract air at the air outlet 201; it is actually an air extraction pump.

[0044] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the adsorption sheet includes a main adsorption sheet 502 and a secondary adsorption sheet 501. Both the main adsorption sheet 502 and the secondary adsorption sheet 501 are disposed on the retaining ring. Both the main adsorption sheet 502 and the secondary adsorption sheet 501 are located in the outer cavity 702, and the main adsorption sheet 502 and the secondary adsorption sheet 501 do not contact each other.

[0045] Specifically, both sides of the main adsorption plate 502 and the auxiliary adsorption plate 501 are tightly attached to the retaining ring and the housing 6. In order to ensure that the gas can flow smoothly from the outer cavity 702 into the inner cavity 701, a gap (i.e., no contact) is provided between the main adsorption plate 502 and the auxiliary adsorption plate 501. This gap is the channel for gas flow. After entering the outer cavity 702 from the air inlet 601, the gas can flow through this channel.

[0046] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the retaining ring includes a main retaining ring and a secondary retaining ring. The main adsorption sheet 502 is disposed on the main retaining ring, and the secondary adsorption sheet 501 is disposed on the secondary retaining ring.

[0047] Specifically, the main baffle ring, the secondary baffle ring, and the housing 6 form an outer cavity 702. When the gas flows in the outer cavity 702, the dust is adsorbed by the main adsorption plate 502 or the secondary adsorption plate 501.

[0048] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the two sides of the main adsorption sheet 502 are respectively attached to the outer wall of the baffle ring and the inner wall of the housing 6, and the two sides of the auxiliary adsorption sheet 501 are respectively attached to the outer wall of the baffle ring and the inner wall of the housing 6.

[0049] The main adsorption plate 502 and the auxiliary adsorption plate 501 are both tightly attached to the retaining ring and the housing 6 to ensure the adsorption efficiency of dust.

[0050] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the main adsorption plate 502 and the auxiliary adsorption plate 501 form a stepped channel. In use, the air inlet 601 is located below the stepped channel, and the air outlet 201 is located above the stepped channel.

[0051] Specifically, the main adsorption plate 502 and the auxiliary adsorption plate 501 form a stepped channel, meaning that the gap between the main adsorption plate 502 and the auxiliary adsorption plate 501 is distributed in a stepped manner. The air inlet 601 is located below the stepped channel, and the air outlet 201 is located above the stepped channel. This design makes the path of the gas in the outer cavity 702 roughly a spiral path, increasing the residence time of the gas in the outer cavity 702 and improving the adsorption rate of dust.

[0052] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the adsorption sheet is an arc-shaped adsorption sheet, and when the gas enters the housing 6, the gas is blown towards the inner arc surface of the adsorption sheet.

[0053] The use of arc-shaped adsorption plates is to increase the contact area between the gas and the adsorption plate, thereby increasing the amount of dust adsorbed from the gas.

[0054] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, HEPA3 is cylindrical, and the air outlet 201 is circular. The diameter of the air outlet 201 is smaller than the inner diameter of HEPA3.

[0055] A cylindrical HEPA filter 3 is used, so that filtered gas exits from the outlet 201 after passing through the cylindrical HEPA filter 3. The cylindrical shape of the HEPA filter 3 ensures that the gas in the inner cavity 701 can flow into the HEPA filter 3 evenly from all directions. Because the gas flows into the HEPA filter 3 evenly from all directions, the airflow velocities in each direction will cancel each other out. This avoids the "whistling" phenomenon (i.e., the screaming sound produced by the gas flowing through) when the gas is discharged, and minimizes the vibration of the entire mechanism during operation. At the same time, it minimizes the probability of HEPA filter 3 clogging.

[0056] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, it also includes a semiconductor cooling chip 8, which is disposed on the adsorption sheet.

[0057] Specifically, the function of the semiconductor cooling chip 8 is to cool the adsorption plate, causing water vapor in the gas to condense and adhere to the adsorption plate. The condensed water vapor can further dissolve the dust, improving the adhesion stability of the dust on the adsorption plate. At the same time, because the surface of the adsorption plate is relatively rough (Ra value greater than 6.3), the adhesion of water droplets after they adhere to the adsorption plate is relatively large. In addition, the adsorption plate itself is arc-shaped (not flat), so the water droplets are not easy to flow. Therefore, the condensed water droplets can adhere stably to the adsorption plate and will not flow away from the adsorption plate.

[0058] Specifically, to prevent the condensate from freezing, the semiconductor cooling chip 8 will cool the adsorbent, maintaining the temperature of the adsorbent between 0℃ and 4℃. Maintaining the adsorbent at this temperature can effectively condense the water in the gas and prevent the small water droplets from freezing.

[0059] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, it also includes a UV lamp 9, which is located inside the housing 6. The housing 6 is opaque, and the end cap 2 is also opaque. The UV lamp 9 can also be located at the end cap 2 or at the secondary retaining ring.

[0060] Specifically, the ultraviolet lamp bead 9 can be located on the retaining ring (including the main retaining ring or the auxiliary retaining ring), on the end cap 2, or on the housing 6. Through the above structural design, the function of the ultraviolet lamp bead 9 is to emit ultraviolet light. Ultraviolet light can produce ozone when it irradiates the air. Ozone can produce trace amounts of hydrogen superoxide when it comes into contact with water (which has extremely strong oxidizing properties, but extremely poor stability and is easily decomposed by heat). Since the temperature of the adsorption plate surface is relatively low (between 0℃ and 4℃), the relatively low temperature of the adsorption plate surface allows hydrogen superoxide to exist on the adsorption plate surface for a relatively long time (hydrogen superoxide is not easily decomposed at low temperatures). When the gas passes through the adsorption plate, it will come into contact with the adsorption plate, thus killing pathogenic microorganisms (including bacteria and viruses) in the gas, ensuring that the content of pathogenic microorganisms in the gas leaving HEPA3 is low or basically non-existent.

[0061] In this type of dust-gas separation mechanism, since the droplets on the adsorption plate do not easily flow on the adsorption plate, the dust in the gas adheres to the water droplets, further increasing the viscosity of the water droplets and making the water droplets adhere more stably to the adsorption plate. Therefore, after a period of use, this separation structure requires cleaning of the main and secondary baffle rings to remove the dirt (from the gas) adhering to them. Some of the larger particles may fall into the housing 6.

[0062] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6 As shown, the shell 6 is a cylindrical shell 6, and the end cap 2 is a circular plate-shaped end cap 2.

[0063] See appendix Figure 4 As shown in the diagram, in actual use, the vacuum motor 1 is located at the top, and the air inlet 601 is located at the bottom.

[0064] In this embodiment, the main adsorption plate and the secondary adsorption plate can be made of copper alloy, while the main retaining ring, the secondary retaining ring, the housing, and the end cap can be made of engineering plastic. Because the heat transfer effect between copper alloy and plastic is poor, this can minimize the cold loss of the adsorption plate during operation and improve the temperature control effect of the cooling plate on the adsorption plate.

[0065] For details, please refer to the attached Figure 5 and appendix Figure 7As shown, the cooling plate is positioned on the surface of the adsorption pump that is not directly exposed to the airflow. To further enhance the adhesion of condensed water droplets on the adsorption plate, additional burrs can be added (the burrs are located on the surface of the adsorption plate directly exposed to the airflow). These burrs (in this embodiment, since the main adsorption plate 502 is located below, burrs 5021 are placed on the main adsorption plate) increase the surface roughness of the adsorption plate. Similarly, since the air sucked in by the vacuum cleaner may contain fragments of plastic film 10, these fragments (when sucked in) can be hooked by the burrs on the adsorption plates as they pass through the stepped arrangement. Because the adsorption plates are arranged in a stepped (gradually rising) manner, after being hooked by the burrs, they can become entangled and adhere to the adsorption plates without blocking the gas passage between the main and auxiliary adsorption plates. This process can be referred to in the attached diagram. Figure 7 As shown in the image. (Attached) Figure 7 The arrows shown indicate the direction of airflow.

[0066] Example 2

[0067] A vacuum cleaner includes a dust-air separation mechanism for a vacuum cleaner as shown in Example 1.

[0068] Example 3

[0069] A gas sterilization method suitable for vacuum cleaners is provided, which uses a dust-gas separation mechanism for vacuum cleaners as shown in Example 1, wherein the ultraviolet lamp beads are lit during sterilization.

[0070] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent modifications made based on the content of the present invention specification, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A dust-air separation mechanism for a vacuum cleaner, comprising a housing, an end cap, and a HEPA filter, wherein the end cap and the housing are fitted together to form a receiving cavity, the HEPA filter is disposed within the housing, the housing has an air inlet, and the end cap has an air outlet, characterized in that, It also includes a retaining ring, a suction motor, and multiple adsorption plates. The retaining ring is disposed inside the housing, dividing the receiving cavity into an inner cavity and an outer cavity. The HEPA filter is disposed inside the inner cavity, and the adsorption plates are disposed inside the outer cavity. The retaining ring has a communication port connecting the inner cavity and the outer cavity. The housing is non-conductive, the end cap is non-conductive, and the adsorption plates are conductive with a surface roughness Ra value greater than 6.

3. The suction motor is disposed at the end cap and is used to draw gas into the outer cavity through the air inlet, then into the inner cavity through the communication port, and finally out through the air outlet after being filtered by the HEPA filter. The adsorption sheet includes a main adsorption sheet and a secondary adsorption sheet, both of which are disposed on a retaining ring and are located within the outer cavity. The main adsorption sheet and the secondary adsorption sheet do not contact each other. The two sides of the main adsorption sheet are respectively attached to the outer wall of the baffle ring and the inner wall of the shell, and the two sides of the auxiliary adsorption sheet are respectively attached to the outer wall of the baffle ring and the inner wall of the shell. The main adsorption plate and the auxiliary adsorption plate form a stepped channel. In use, the air inlet is located below the stepped channel, and the air outlet is located above the stepped channel.

2. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, The retaining ring includes a main retaining ring and a secondary retaining ring, with the main adsorption sheet disposed on the main retaining ring and the secondary adsorption sheet disposed on the secondary retaining ring.

3. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, The adsorption sheet is an arc-shaped adsorption sheet, and when gas enters the shell, the gas is blown towards the inner arc surface of the adsorption sheet.

4. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, The HEPA is cylindrical, and the air outlet is circular, with a diameter smaller than the inner diameter of the HEPA.

5. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, It also includes a semiconductor refrigeration chip, which is disposed on the adsorption sheet.

6. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, It also includes ultraviolet lamp beads, which are disposed at the retaining ring, the end cap, or the housing. The housing is opaque, and the end cap is opaque.

7. The dust-air separation mechanism for a vacuum cleaner as described in claim 1, characterized in that, The shell is a cylindrical shell, and the end cap is a disc-shaped end cap.

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