Air purifier

Abstract

The present disclosure relates to an air purifier (1) with a hair cleaning function. An air purifier (1) is provided with: a housing (10); the main purification module (20) is mounted in the shell (10); and at least one auxiliary purification module (30), each auxiliary purification module (30) is installed near the bottom of the housing (10) and forms an air flow circulation path, and the auxiliary purification module (30) comprises an air inlet arranged at one end of the air flow circulation path and a first fan (36) arranged at the other end of the air flow circulation path, the first fan (36) is configured to blow air sucked from the air inlet to a surface to be cleaned below the bottom of the housing (10).

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to air purifiers, and particularly to air purifiers with a hair cleaning function. Background Art

[0002] Pets with hair such as cats and dogs are increasingly entering households. These pets will generate a large amount of hair in daily life, which will in turn affect the air quality in the room. Traditional air purifiers are not satisfactory in hair removal, and it is desired to further improve the performance of air purifiers. Summary of the Invention

[0003] Embodiments of the present disclosure provide an air purifier and a method for operating the air purifier, aiming to improve the performance of the air purifier, especially the performance in collecting debris such as hair.

[0004] According to a first aspect of the present disclosure, there is provided an air purifier with a hair cleaning function. The air purifier includes: a housing; a main purification module installed in the housing; and at least one auxiliary purification module, each auxiliary purification module being installed near the bottom of the housing and forming an air flow circulation path. The auxiliary purification module includes an air inlet provided at one end of the air flow circulation path and a first fan provided at the other end of the air flow circulation path. The first fan is configured to blow the gas inhaled from the air inlet to a surface to be cleaned below the bottom of the housing.

[0005] According to the present disclosure, by providing an air flow that can blow onto the ground through the auxiliary purification module, the hair removal performance and air purification ability of the air purifier can be enhanced.

[0006] In some embodiments, the air flow circulation path of the auxiliary purification module can be independent of the air flow circulation path of the main purification module. Thereby, the auxiliary purification module can be prevented from being contaminated by the air flow of the main purification module.

[0007] In some embodiments, the housing may include an air inlet at a side wall near the bottom. The housing further includes an air duct communicating with the air inlet and provided inside the housing. The first fan is provided near the outlet of the air duct. Through the independent air duct, it can be achieved that the auxiliary purification module can include an air flow circulation path independent of the main purification module.

[0008] In some embodiments, the first fan may be located at the bottom of the housing or at a side wall of the housing near the bottom.

[0009] In some embodiments, the air purifier may further include supporting legs disposed under the shell, wherein when the first fan is operating, the blown gas flows through the air flow circulation path to blow up the hair on the surface to be cleaned and / or attract the hair to the vicinity of the air purifier due to the negative pressure formed around the air flow circulation path by the blown gas.

[0010] In some embodiments, the air duct may include: an inlet section, including an inlet opening aligned with the air inlet; an outlet section, including an outlet opening suitable for blowing gas to the surface to be cleaned below the bottom of the shell, and the first fan is arranged near the outlet opening; and a connecting section connecting the inlet section and the outlet section.

[0011] In some embodiments, the inlet opening and the outlet opening may be arranged to be staggered with respect to each other.

[0012] In some embodiments, the airway may be an integrally formed component and may be removably mounted to the housing as a separate component.

[0013] In some embodiments, the auxiliary purification module may further include an air grille adapted to cover the air inlet, and air is adapted to enter the air passage through the air grille.

[0014] In some embodiments, the auxiliary purification module may also include a hair collection box suitable for installation at the inlet opening and / or a filter screen arranged across the inlet opening, and hair entering the air duct along with the air is blocked by the filter screen to avoid further entering the first fan.

[0015] In some embodiments, the main purification module may include a second fan and a filter assembly, wherein the second fan is configured to laterally draw airflow into the housing and discharge the filtered airflow through the side or top side of the housing.

[0016] In some embodiments, the auxiliary purification module and the main purification module may share an air flow inlet so that the air flow is partially branched to the auxiliary purification module after passing through the air flow inlet of the main purification module to provide gas blown toward the surface to be cleaned below the bottom of the shell.

[0017] In some embodiments, the main purification module may include a pre-filter and a filter installed in the gas flow path downstream of the pre-filter, wherein the air flow is branched to the auxiliary purification module after passing through the pre-filter of the main purification module and before passing through the filter.

[0018] In some embodiments, the at least one auxiliary purification module may be configured to operate intermittently during operation of the main purification module, wherein during operation of the at least one auxiliary purification module, the main purification module is configured to: attract the hair blown up from the surface to be cleaned by the first fan and / or the hair attracted by the negative pressure formed by the blown gas around the air purifier through the pre-filter and the filter.

[0019] In some embodiments, the at least one auxiliary purification module may include two auxiliary purification modules respectively arranged on both sides of the main purification module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown by way of example and not by way of limitation.

[0021] Figure 1 Schematic diagram showing the air purifier according to an embodiment of the present disclosure as viewed from the front side.

[0022] Figure 2 Longitudinal sectional view showing the air purifier according to an embodiment of the present disclosure.

[0023] Figure 3 Three-dimensional schematic diagram showing the air purifier according to an embodiment of the present disclosure as viewed from the bottom side.

[0024] Figure 4 Cross-sectional schematic diagram showing the auxiliary purification module of the air purifier according to an embodiment of the present disclosure.

[0025] Figure 5 Three-dimensional view showing the air duct according to an embodiment of the present disclosure.

[0026] Figure 6 Three-dimensional views showing the air duct according to an embodiment of the present disclosure as viewed from different angles.

[0027] Figure 7 Exploded view showing the components at the air inlet of the auxiliary purification module of the air purifier according to an embodiment of the present disclosure.

[0028] In each of the drawings, the same or corresponding reference numerals denote the same or corresponding parts. DETAILED DESCRIPTION

[0029] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be more thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0030] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise specified, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". Terms such as "upper", "lower", "front", "rear", "lateral", "bottom side", etc., which indicate the placement or positional relationship, are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the principles of the present disclosure, rather than indicating or implying that the element referred to must have a specific orientation, be constructed or operate in a specific orientation, and thus should not be construed as a limitation of the present disclosure.

[0031] In places such as households with pets, pet stores, pet hospitals, textile factories, etc., the air is usually filled with hair. The characteristics of hair are significantly different from objects such as dust and large particles. The texture of hair is very soft and very fine. Compared with dust or large particles, hair is more likely to accumulate on the pre-filter component and is more likely to clog the pre-filter component. Therefore, when a traditional air purifier is applied to an environment rich in hair, its air purification performance will be severely limited. According to the present disclosure, an air purifier with a hair cleaning function is provided, which can improve the performance of the air purifier, especially in terms of hair treatment. The air purifier according to the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0032] Figure 1 A schematic view of the air purifier according to an embodiment of the present disclosure as viewed from the front side is shown. Figure 2 A longitudinal sectional view of the air purifier according to an embodiment of the present disclosure is shown, and the main components of the main purification module are shown. As Figure 1 shown, the air purifier 1 is generally in the form of a square body and is adapted to be placed on the ground for use. The air purifier 1 may include a top side, a bottom side, and lateral sides (or sides). It should be understood that the illustrated shape is only exemplary, and the air purifier may have other shapes, such as a cylindrical shape, a cubic shape, or any other suitable shape.

[0033] As Figure 1 and Figure 2As shown, the air purifier 1 includes a housing 10 and a main purification module 20 installed within the housing 10. The main purification module 20 may include a fan assembly 22. The fan assembly 22 may include a fan, and the rotation of the fan impeller provides the power for air flow. The housing 10 defines the overall frame structure of the air purifier 1 and is provided with an air duct. The air duct may be at least partially defined by the housing 10. The main purification module 20 is installed in the air duct for filtering the gas in the air duct. The main purification module 20 may include a pre-filter 28 and a filter 26 installed downstream of the gas flow path of the pre-filter 28. The pre-filter 28 and the filter 26 installed downstream of the gas flow path of the pre-filter 28 may be installed in the upstream air duct 18 of the air duct.

[0034] The front surface of the air purifier 1 may include a filter baffle 12. The filter baffle 12 may be detachably installed to the housing 10. The housing 10 may be formed to be recessed downstream from the front surface of the air purifier and includes an opening portion allowing air to enter. The pre-filter 28 may be installed to the opening portion. The filter baffle 12 at least partially covers the opening portion, and a large gap between the filter baffle 12 and the housing 10 may form an elongated inlet 13 allowing air to enter the air intake cavity 22. In the illustrated embodiment, the large gaps located on the lateral sides of the filter baffle 12 and between the housing 10 are used as air inlets. In other embodiments, the large gaps located on the upper and lower sides of the filter baffle 12 and between the housing 10 may also be used as air inlets. This use of large gaps has advantages in improving the performance of the air purifier. This is because if the air inlet is formed in the form of small holes or a small hole array, fine hairs are easily adsorbed on the small holes, thereby blocking the air inlet, increasing the air flow resistance, and thus affecting the air outlet efficiency of the air purifier. By using a large gap to form the air inlet, the accumulation of hairs at the air inlet is effectively prevented, and the floating hairs in the air are collected on the pre-filter.

[0035] The pre-filter 28 may be configured to preliminarily filter larger particles, hairs and other sundries in the air flow flowing in the air duct. The pre-filter 28 may be implemented in various forms. In some embodiments, the pre-filter 28 may include a wire mesh having a mesh of a predetermined size, and an appropriate mesh size may be selected according to the application scenario. The filter 20 may include a filter element, and the filter element may be an adsorption material, such as activated carbon, etc. In some embodiments, the filter may include a chemical absorption substance to remove odors such as ammonia and methyl mercaptan.

[0036] Figure 2The air flow path in the main purification module 20 is also shown. As shown by the arrow, when the fan assembly 22 is in operation, the air enters the air inlet chamber of the air duct through the air inlet 13, and then passes through the pre-filter 28 and the filter 20 in sequence, and then enters the air outlet chamber. The filtered clean air finally flows out of the air purifier through the air outlet 19. Figure 2 In the illustrated embodiment, the air outlet 19 is shown to be located above the air purifier 1. In other embodiments, the air outlet 19 may be disposed on the side of the air purifier 1. It should be understood that this is merely exemplary, and the air inlet 13 and the air outlet 19 may be located at any other appropriate position of the air purifier 1.

[0037] The pre-filter 28 may be installed upstream of the filter 20 and configured to preliminarily filter larger particles, hair, and other debris in the airflow flowing in the air duct. The pre-filter 28 may be implemented in various forms. Figure 3 An embodiment of the pre-filter component is shown as an example. The pre-filter 28 may include a wire mesh 32 with a predetermined mesh size, and the mesh size may be selected according to the application scenario. The wire mesh 32 may be supported by a frame 34. The pre-filter 28 is installed at an appropriate position upstream of the filter 20. Figure 1 and Figure 2 In the illustrated embodiment, the pre-filter 28 is mounted adjacent to the filter 20. It should be understood that this is merely exemplary and the pre-filter 28 may be disposed in any other suitable location upstream of the filter 20.

[0038] In some embodiments, the air purifier 1 further includes a scraper device (not shown). The scraper device may be disposed near the pre-filter 28 and configured to scrape the surface of the pre-filter 28 to remove debris (such as hair, etc.) accumulated on the surface of the pre-filter 28 from the surface of the pre-filter 28. This is beneficial for improving the air flow rate of the pre-filter 28. After the air purifier 1 has been operated for a certain period of time, the hair and other debris mixed in the air will accumulate on the surface of the pre-filter 28 and block the pre-filter 28, thereby increasing the air flow resistance of the air flowing through the pre-filter 28. By using the scraper device to clean up the accumulated debris and reduce the air flow resistance, the air flow rate can be improved.

[0039] In some embodiments, Figure 1 and Figure 2 As shown, the air purifier 1 may further include a collection box 50. The collection box 50 may be detachably mounted to the housing 10 adjacent to the pre-filter 28. The collection box 50 includes a receiving chamber 52 adapted to receive debris cleaned from the pre-filter 28. Figure 1As shown, the outer surface of the collection box 50 may include an observation window 51. Through the observation window 51, the filling state inside the collection box 50 can be observed, and the collection box 50 can be disassembled as needed to dump the collected materials inside it.

[0040] In some embodiments, the collection box 50 may be made of a transparent material. The collection box 50 may further include a cover 52 for covering the storage cavity 52. The provision of the cover 52 is particularly beneficial for hair collection. When sundries such as hair are scraped off by the scraping device and collected into the collection box 50, in the case where the cover 52 is not provided, during the operation of the air purifier 1, under the operation of the fan, the air duct is in a negative pressure environment, and the hair collected in the storage cavity 52 is very likely to be scraped up again under the action of the negative pressure and return to the surface of the pre-filter 28. By means of the cover 52, the above situation can be effectively prevented.

[0041] In some embodiments, a motor for driving the cover 52 to close or open may be provided. The motor can operate in coordination with the drive mechanism of the scraping device to achieve the collection of sundries. The motor can be configured to open when the air purifier cleans the pre-filter 28 to allow the sundries cleaned from the pre-filter 28 to enter the collection box 50; and to close after the cleaning operation is completed to prevent the sundries collected in the collection box 50 from escaping from the collection box 50.

[0042] Figure 3 A perspective schematic view of the air purifier according to an embodiment of the present disclosure as observed from the bottom side is shown. In some embodiments, as Figure 3 shown, the air purifier 1 may further include one or more auxiliary purification modules 30. Each auxiliary purification module 30 is installed near the bottom of the housing 10. The auxiliary purification module 30 can provide functional supplementation to the main purification module 20 to further enhance the hair removal performance and air purification ability of the air purifier 1.

[0043] In some embodiments, as Figure 3 shown, the air purifier may include two auxiliary purification modules 30 respectively arranged on the lateral two sides of the main purification module 20. In some embodiments, the two auxiliary purification modules 30 may be symmetrically arranged with respect to the main purification module 20. It should be understood that the number of the auxiliary purification modules 30 may be one or more and may be in other arrangements.

[0044] The auxiliary purification module 30 may include a fan 36 configured to blow gas at least partially toward a surface to be cleaned (such as the ground) below the bottom of the housing 10. In some embodiments, the gas may be blown toward the surface to be cleaned directly below the bottom of the housing 10; in some embodiments, the gas may be blown toward the surface to be cleaned obliquely below the bottom of the housing 10, that is, at least partially providing an air flow capable of blowing onto the surface to be cleaned. In an environment rich in hair, the texture of the hair is light and it is easy to accumulate on the surface to be cleaned. This hair accumulated on the surface to be cleaned may be difficult to remove or only slightly removed even if the power of the main purification module 20 is increased.

[0045] According to the present disclosure, by providing an air flow at least partially capable of blowing onto the surface to be cleaned through the auxiliary purification module 30, the hair removal performance of the air purifier 1 can be enhanced. This is because, on the one hand, the hair accumulated on the surface to be cleaned and located on the flow path of the air flow column will be lifted by the strong blowing force of the air flow from the bottom of the housing 10, and these lifted hairs can be attracted by the main purification module 20; on the other hand, the hair accumulated on the surface to be cleaned and located outside the flow path of the air flow column will be concentrated around the air purifier 1 due to the Bernoulli effect generated by the air flow column, and these concentrated hairs are also convenient for the air purifier to collect.

[0046] In some embodiments, as Figure 3 shown, the air purifier may further include support legs 15 disposed below the housing 10. In addition to providing support for the air purifier, the support legs 15 can also create a space for air flow. In particular, the support legs 15 form an air flow circulation path between the bottom of the housing 10 and the surface to be cleaned. The air flow flowing toward the surface to be cleaned can flow through the space formed between the bottom of the housing 10 and the surface to be cleaned. Thereby, the hair collection and / or removal function can be further enhanced.

[0047] In some embodiments, as Figure 3 shown, the fan 36 of the auxiliary purification module 30 may be disposed at the bottom of the housing 10, such as near the bottom case of the housing 10. In some embodiments (not shown), the fan 36 may be located at the side wall of the housing 10 near the bottom. The fan can also be disposed at other appropriate positions as long as an air flow component flowing toward the surface to be cleaned can be provided by the fan. In some embodiments, each auxiliary purification module 30 forms an air flow circulation path. The auxiliary purification module 30 may include an air inlet provided at one end of the air flow circulation path and a fan 36 provided at the other end of the air flow circulation path. The fan 36 is configured to blow the gas inhaled from the air inlet to the surface to be cleaned below the bottom of the housing 10.

[0048] In some embodiments, the airflow circulation path of the auxiliary purification module 30 is independent of that of the main purification module 20. In some embodiments, the airflow circulation path of the auxiliary purification module 30 may partially overlap with that of the main purification module 20.

[0049] Figure 4 A cross-sectional schematic view of the auxiliary purification module 30 of an air purifier according to an embodiment of the present disclosure is shown. In some embodiments, as Figure 4 shown, the housing 10 may include an air inlet 17 at a side wall near the bottom. The air inlet 17 can be used as the air inlet of the auxiliary purification module 30. The housing 10 may further include an air duct 34 that communicates with the air inlet 17 and is disposed within the housing 10. A fan 36 is disposed near the outlet of the air duct 34. By providing an independent airflow circulation path for the auxiliary purification module 30, the auxiliary cleaning solution according to the present disclosure can be conveniently implemented without making any changes to the main purification module 20. In addition, the airflow circulation path of the auxiliary purification module 30 is independent of that of the main purification module 20, facilitating the maintenance and servicing of the auxiliary purification module 30 itself.

[0050] In some embodiments, the air duct 34 is a one-piece member (e.g., by injection molding) and is detachably mounted to the housing 10 as an independent component. In some embodiments, the air duct 34 may be integrally formed with the housing 10.

[0051] Figure 5 and Figure 6 respectively show perspective views of the air duct at different angles according to an embodiment of the present disclosure. In some embodiments, as Figure 5 and Figure 6 shown, the air duct 34 may include an inlet section 342, an outlet section 346, and a connecting section 344. The inlet section 342 includes an inlet opening 341 that aligns with the air inlet 17. The outlet section 346 may include an outlet opening 343 through which gas is blown towards a surface to be cleaned below the bottom of the housing 10. The size of the outlet opening 343 may be set to match the size of the fan 36. The connecting section 344 may connect the inlet section 342 and the outlet section 346. In some embodiments, the inlet opening 341 and the outlet opening 343 are arranged offset from each other. This has advantages in improving the layout of the air purifier and does not increase the gas resistance. It should be understood that the illustrated embodiments are merely exemplary. The air duct 34 can be formed into any other suitable shape. The air duct 34 may include a fastening portion by which it can be conveniently fixed to the housing 10.

[0052] In some embodiments (not shown), the auxiliary purification module 30 and the main purification module 20 may share an air inlet. After passing through the air inlet of the main purification module 20, the air flow may be partially branched to the auxiliary purification module 30. Thereby, gas can be provided to blow at least partially towards the surface to be cleaned below the bottom of the housing 10. In some embodiments, the air flow is branched to the auxiliary purification module 30 after passing through the pre-filter 28 of the main purification module 20 and before passing through the filter 26.

[0053] Figure 7 An exploded view of components at the air inlet of the auxiliary purification module of an air purifier according to an embodiment of the present disclosure is shown. In some embodiments, as Figure 7 shown, the air purifier may further include an air grille 32 adapted to cover the air inlet 17. Air is adapted to enter the air duct 34 through the air grille 32.

[0054] In some embodiments, as Figure 7 shown, the air purifier may further include a hair collection box 38 adapted to be installed at the inlet opening 341. In some embodiments, the hair collection box 38 may be integrally formed with the air grille 32, thereby reducing the number of parts. In some embodiments, a filter screen 37 may also be provided across the inlet opening 341. Hairs entering the air duct 34 along with the air are blocked by the filter screen 37 and collected. The pressure loss of the filter screen 37 provided in the hair collection box 38 is very small, which can minimize the decrease in air flow velocity. In some embodiments, the hair collection box 38 may be detachably installed in the air duct 34. Thereby, after the hair collection box 38 has collected a sufficient amount of hair, the hair collection box 38 can be selectively removed to clean the hair.

[0055] In some embodiments, at least one auxiliary purification module 30 is configured to operate intermittently during the operation of the main purification module 20. As an example, the auxiliary purification module 30 may be intermittently operated for one minute or several minutes every hour that the main purification module 20 operates. Thereby, it can cooperate with the main purification module 20 to achieve air purification and hair removal.

[0056] According to the auxiliary purification module 30 of the present disclosure, when the fan 36 operates, the high-speed rotation of the fan generates a negative pressure at the inlet of the air duct 34, and the airflow near the side wall of the housing will enter the air duct 34 through the side wall of the housing. Thus, the hair carried in the airflow is blocked by the filter net 37 and collected in the hair collection box 38. On the one hand, the high-speed airflow generated by the high-speed rotation of the fan will lift the hair accumulated on the surface to be cleaned, and the lifted hair can be collected and captured by the auxiliary purification module 30 and / or the main purification module 20. On the other hand, the high-speed rotation of the fan will generate a negative pressure area around the high-speed airflow. Under the action of the negative pressure, the hair around the air purifier 1 will be attracted by the negative pressure and attracted to the vicinity of the air purifier 1. The discharged airflow at the bottom of the housing and the inhaled airflow from the side wall of the housing form a local airflow circulation, and the enhanced airflow lifts the hair and enables more hair to enter the collection box. This design improves the ability to absorb hair without reducing the air purification ability of the main purification module 30.

[0057] In addition, although the operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in a sequential order, or that all of the illustrated operations be performed to achieve the desired result. In certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present disclosure. Certain features described in the context of separate embodiments may also be implemented in combination in a single implementation. Conversely, the various features described in the context of a single implementation may also be implemented separately or in any suitable sub-combination in multiple implementations.

[0058] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

[0059] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled persons in the technical field to understand the embodiments disclosed herein.

Claims

1. An air purifier with a hair cleaning function, characterized in that, Comprising: A housing (10); A main purification module (20), which is installed inside the housing (10); And At least one auxiliary purification module (30), each of the auxiliary purification modules (30) is installed near the bottom of the housing (10) and forms an air flow circulation path. The auxiliary purification module (30) includes an air inlet provided at one end of the air flow circulation path and a first fan (36) provided at the other end of the air flow circulation path. The first fan (36) is configured to blow the gas inhaled from the air inlet to the surface to be cleaned below the bottom of the housing (10).

2. The air purifier according to claim 1, wherein The air flow circulation path of the auxiliary purification module (30) is independent of the air flow circulation path of the main purification module (20).

3. The air purifier according to claim 2, characterized in that, The housing (10) includes an air inlet (17) at a side wall near the bottom. The housing (10) further includes an air duct (34) that communicates with the air inlet (17) and is provided inside the housing (10). The first fan (36) is provided near the outlet of the air duct (34).

4. The air purifier according to claim 1, characterized in that, The first fan (36) is located at the bottom of the housing (10) or at the side wall of the housing (10) near the bottom.

5. The air purifier according to any one of claims 1-4, characterized in that, It further includes support legs (15) provided below the housing (10). When the first fan (36) operates, the blown gas flows through the air flow circulation path to blow up the hair on the surface to be cleaned, and / or attract the hair to the vicinity of the air purifier due to the negative pressure formed around the air flow circulation path by the blown gas.

6. The air purifier according to claim 3, wherein The air duct (34) includes: An inlet section (342), including an inlet opening (341) aligned with the air inlet (17); An outlet section (346), including an outlet opening (343) adapted to blow the gas to the surface to be cleaned below the bottom of the housing (10). The first fan (36) is provided near the outlet opening (343); and A connecting section (344) connecting the inlet section (342) and the outlet section (346).

7. The air purifier according to claim 6, characterized in that, The inlet opening (341) and the outlet opening (343) are arranged staggeredly.

8. The air purifier according to any one of claims 3, 6, and 7, characterized in that The air duct (34) is an integrally formed member and is detachably installed on the housing (10) as an independent component.

9. The air purifier according to any one of claims 3, 6, and 7, characterized in that The auxiliary purification module (30) further includes an air grille (32) adapted to cover the air inlet (17), and air is adapted to enter the air duct (34) through the air grille (32).

10. The air purifier according to claim 6, wherein, The auxiliary purification module (30) further includes a hair collection box (38) adapted to be installed at the inlet opening (341) and / or a filter net (37) disposed across the inlet opening (341). The hair entering the air duct (34) along with the air is blocked by the filter net (37) to prevent further entry into the first fan (36).

11. The air purifier according to any one of claims 1-4, 6, 7, and 10, characterized in that, The main purification module (20) includes a second fan (22) and a filter assembly. The second fan (22) is configured to laterally attract the air flow into the housing (10) and discharge the filtered air flow through the side or top side of the housing (10).

12. The air purifier according to any one of claims 1-4, characterized in that, The auxiliary purification module (30) shares an air flow inlet with the main purification module (20), so that part of the air flow is branched to the auxiliary purification module (30) after passing through the air flow inlet of the main purification module (20), to provide a gas blown towards the surface to be cleaned below the bottom of the housing (10).

13. The air purifier according to claim 12, wherein The main purification module (20) includes a pre-filter (28) and a filter (26) installed downstream of the gas flow path of the pre-filter (28), wherein the air flow is branched to the auxiliary purification module (30) after passing through the pre-filter (28) of the main purification module (20) and before passing through the filter (26).

14. The air purifier according to claim 13, wherein The at least one auxiliary purification module (30) is configured to operate intermittently during the operation of the main purification module (20), wherein during the operation of the at least one auxiliary purification module (30), the main purification module (20) is configured to: attract the hair blown up from the surface to be cleaned by the first fan (36) and / or the hair attracted to the periphery of the air purifier by the negative pressure formed by the blown gas, and attract it through the pre-filter (28) and the filter (26).

15. The air purifier according to any one of claims 1-4, 6, 7, 10, 13, 14, characterized in that, The at least one auxiliary purification module (30) includes two auxiliary purification modules (30) respectively arranged on both sides of the main purification module (20).

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