Air purifier

Abstract

The air purifier according to an embodiment of the present disclosure comprises: a case having suction ports formed in the circumferential surface thereof; and air purification modules including blower fans disposed inside the case and filters for removing airborne particles introduced through the suction ports, the air purification modules including first discharge ports at the bottom end and second discharge ports at the top end, wherein the air, from which the airborne particles have been removed, is discharged in a downward direction through the first discharge ports and in an upward direction through the second discharge ports and thus is prevented from flowing backwards.

Description

air purifier

[0001] The present disclosure relates to an air purifier, and more particularly, to an air purifier capable of discharging clean air in various directions.

[0002] An air purifier is a device that filters and expels the air within a space, thereby reducing dust and bacteria. An air purifier filters out foreign substances through the airflow within the space and expels the air free of these contaminants.

[0003] The air purifier can form an outlet at the top and cause the filtered air discharged upward to flow in all directions to quickly increase the cleanliness of the indoor space.

[0004] Additionally, when forming an outlet on the upper side, a separate fan for wind direction control can be placed on the upper side to send the filtered air to a long distance.

[0005] Additionally, research is underway on an air purifier configured with multiple stages by stacking the blower devices vertically.

[0006] Prior art documents 1 (Korean Patent Publication No. KR10-2022-0083719) and 2 (Korean Patent Publication No. KR10-2017-0140578) disclose air purifiers in which blower devices are arranged in a vertical direction to filter a large amount of air.

[0007] These air purifiers have the advantage of increasing the ventilation capacity and allowing air to be sucked in and discharged in more diverse directions, making it easy to purify the air around the user, whether sitting or standing.

[0008] However, in these air purifiers, the air discharged from the blower located at the bottom blows strongly upward, generating a circulating wind, so that the discharged clean air can flow into the blower located at the top.

[0009] And, the more air flowing upwards, the less likely it is that the purified air will be able to circulate farther.

[0010] In addition, when a backflow occurs, there is a problem in that the air flow of the blower is reduced as it acts as a resistance element that prevents unpurified outside air from flowing into the blower located at the top.

[0011] In order to solve the above-mentioned problem, the air purifiers of prior art document 1 (Korean Patent Publication No. KR10-2022-0083719) and prior art document 2 (Korean Patent Publication No. KR10-2017-0140578) add a partition plate that changes the direction of air flow between multiple blower devices to prevent backflow.

[0012] However, since the amount of air that collides with the partition plate and turns laterally is relatively smaller than the amount of air that rises outward in the radial direction, the discharged upward flow cannot be sufficiently turned, so the air rises and is discharged in a roughly diagonal direction, and a whirlwind may occur.

[0013] If the height of the partition plate is lowered to increase the amount of air that collides with the partition plate and turns sideways, the problem of the area over which the air is discharged becoming narrow may occur.

[0014] When applying an airflow guide structure such as a partition plate to an air purifier to prevent draft, the product height and overall size increase, and the product appearance appears to be disconnected.

[0015] The air purifiers in the prior literature had an outer grille divided into upper and lower sections, increasing the number of fastening points and making maintenance and cleaning inconvenient. Furthermore, the filter mounting column in these air purifiers blocked the intake port, creating flow resistance and potentially reducing air purification performance.

[0016] The problem that the present disclosure seeks to solve is to provide an air purifier that can improve air purification performance by preventing discharged clean air from being re-inflowed.

[0017] The problem that the present disclosure seeks to solve is to provide a miniaturized air purifier that prevents backflow without adding a structure such as a partition plate.

[0018] The problem that the present disclosure seeks to solve is to provide an air purifier capable of forming an airflow that effectively removes allergen substances that cause allergies.

[0019] The problem that the present disclosure seeks to solve is to provide an air purifier capable of improving the intake capacity of air sucked into the air purifier.

[0020] The problem that the present disclosure seeks to solve is to provide an air purifier in which the case forming the exterior can be easily combined and separated.

[0021] The problem that the present disclosure seeks to solve is to provide an air purifier that can simplify the case combination structure and reduce manufacturing costs.

[0022] The problem that the present disclosure seeks to solve is to provide an air purifier whose filter can be easily replaced.

[0023] The problem that the present disclosure seeks to solve is to provide an air purifier whose internal components are easy to maintain and repair.

[0024] The problem that the present disclosure seeks to solve is to provide an air purifier that can circulate discharged clean air over a longer distance.

[0025] The tasks of the present disclosure are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0026] An air purifier according to an embodiment of the present disclosure can prevent the discharged air from being re-introduced into the intake port at the top of the product by discharging clean air from the bottom of the product.

[0027] An air purifier according to an embodiment of the present disclosure can prevent a backflow and improve air purification performance by stacking an air purification module that discharges clean air upward and an air purification module that discharges clean air downward.

[0028] An air purifier according to an embodiment of the present disclosure can be miniaturized because it does not require a structure for preventing wind circulation, and can improve the degree of design freedom, such as the location of internal components.

[0029] An air purifier according to an embodiment of the present disclosure can effectively remove allergen substances by forming an airflow at a height where allergen substances that cause allergies are mainly located.

[0030] An air purifier according to an embodiment of the present disclosure can improve suction performance by sucking air through a suction port formed around a case.

[0031] An air purifier according to an embodiment of the present disclosure can improve the suction performance of air sucked into a filter while securing support rigidity with a truss structure.

[0032] An air purifier according to an embodiment of the present disclosure is configured to cover the outer surfaces of the air purification modules together, rather than having a case for each air purification module stacked vertically, thereby facilitating assembly and separation and reducing manufacturing costs.

[0033] An air purifier according to one embodiment of the present disclosure includes a case having an intake port formed on a peripheral surface, a blower fan disposed inside the case, and an air purification module including a filter for removing foreign substances in air flowing into the intake port, wherein the air purification module includes a first discharge port formed at a lower end and a second discharge port formed at an upper end, and air from which the foreign substances have been removed is discharged downward through the first discharge port and upward through the second discharge port, thereby preventing a backflow.

[0034] The above air purification module includes a first air purification module and a second air purification module arranged above the first air purification module.

[0035] The first outlet is formed at the bottom of the first air purification module, and the second outlet is formed at the top of the second air purification module.

[0036] The air purifier further includes a booster module that is positioned above the air purification module and adjusts the wind direction of air discharged through the second discharge port, thereby enabling the clean air to be sent further.

[0037] The air purifier may further include a bottom plate that is placed on the lower side of the air purification module and is in contact with the ground.

[0038] On the upper surface of the bottom plate, a flow guide may be arranged to laterally guide air discharged downward through the first discharge port.

[0039] The above euro guide may include a curved portion, a flat portion extending laterally from the curved portion, and a boss protruding upward from an end of the flat portion.

[0040] In the above first discharge port, a lower discharge grill including a plurality of grills bent in an outward direction can be arranged.

[0041] The booster module may include an outer cover, an inner grill disposed on the inner side of the outer cover and having an outlet formed therein, a rear suction grill disposed on the front side of the rear suction grill and having an intake formed therein, a booster fan disposed on the inner side of the inner grill, and a motor for rotating the booster fan.

[0042] The booster module may further include a display panel disposed on the front of the booster fan, and an internal flow guide disposed between the outer cover and the inner grill to change the flow direction of air discharged through the outlet of the inner grill.

[0043] Air discharged through the outlet of the inner grill can pass through a slit formed between the inner euro guide and the display panel.

[0044] The above display panel can cover the entire front of the booster fan.

[0045] The above motor may be placed inside the above booster fan.

[0046] The above booster module can be detachably mounted on the top of the second air purification module.

[0047] The booster module may further include a power module that, when the booster module is mounted on the second air purification module, comes into contact with a terminal of the second air purification module and receives power from the second air purification module.

[0048] The above case may include a first case having a semi-cylindrical shape and covering a portion of the outer surface of the air purification module, and a second case having a semi-cylindrical shape and covering the remaining portion of the outer surface of the air purification module.

[0049] The above air purification module may include a first magnet and a second magnet disposed above the first magnet.

[0050] The first case may include a first lower metal piece coupled to the first magnet and a first upper metal piece coupled to the second magnet.

[0051] The second case may include a second lower metal piece coupled to the first magnet and a second upper metal piece coupled to the second magnet.

[0052] The above air purification module may include a fan housing that accommodates the blower fan, and a plurality of support members extending vertically from the fan housing.

[0053] Some of the above multiple supports may be formed as a truss structure in which multiple straight members are arranged in a plurality of triangular configurations.

[0054] Specific details of other embodiments are included in the detailed description and drawings.

[0055] According to at least one of the embodiments of the present disclosure, a first discharge port formed at the bottom and a second discharge port formed at the top are included, and air from which foreign substances have been removed is discharged downward through the first discharge port at the bottom and upward through the second discharge port at the top, thereby preventing a backwash.

[0056] According to at least one of the embodiments of the present disclosure, by arranging a first air purification module that discharges clean air downwardly at the bottom and a second air purification module that discharges clean air upwardly at the top, air discharged from the first air purification module can be prevented from flowing into the second air purification module, thereby improving air purification performance.

[0057] According to at least one of the embodiments of the present disclosure, a booster module having a fan disposed above an air purification module can be disposed to send the purified air further.

[0058] According to at least one of the embodiments of the present disclosure, a flow guide is arranged on the upper surface of a bottom plate that is disposed on the lower side of an air purification module and contacts the ground, thereby guiding air discharged downward through a first discharge port laterally, thereby capturing and floating allergen substances that cause allergies, and effectively removing the allergen substances.

[0059] According to at least one of the embodiments of the present disclosure, the euro guide can reduce flow resistance by including a boss protruding upward from an end.

[0060] According to at least one of the embodiments of the present disclosure, the first discharge port may be provided with a lower discharge grille including a plurality of grilles bent in an outward direction to form a lower discharge airflow for floating allergen particles.

[0061] According to at least one of the embodiments of the present disclosure, the booster module can prevent dust from accumulating on the booster fan and the internal grill by arranging the display panel to cover the entire front surface of the booster fan and discharging air through a slit formed next to the display panel.

[0062] According to at least one of the embodiments of the present disclosure, the booster module is detachably mounted on top of the second air purification module, thereby facilitating cleaning and maintenance.

[0063] According to at least one of the embodiments of the present disclosure, the booster module may further include a power module that, when mounted, comes into contact with a terminal of the second air purification module and receives power from the second air purification module, thereby making the separation and mounting of the booster module easier.

[0064] An air purifier according to an embodiment of the present disclosure is configured to cover the outer surfaces of the air purification modules together, rather than having a case for each air purification module stacked vertically, thereby facilitating assembly and separation and reducing manufacturing costs.

[0065] According to at least one of the embodiments of the present disclosure, the case can be easily joined and separated with a small number of magnets and metal pieces, thereby providing an advantage in that maintenance and management of internal components are easy.

[0066] According to at least one of the embodiments of the present disclosure, the air purification module can increase the air intake area of ​​the filter by forming some of the plurality of support members extending vertically from the fan housing into a truss structure.

[0067] The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0068] FIG. 1 is a perspective view of an air purifier according to one embodiment of the present disclosure.

[0069] FIG. 2 is a cross-sectional view of an air purifier according to an embodiment of the present disclosure.

[0070] FIG. 3 is a drawing showing the air flow of an air purifier according to one embodiment of the present disclosure.

[0071] Figure 4 is an exploded view of an air purifier according to one embodiment of the present disclosure.

[0072] FIG. 5 is an assembly diagram of a booster module according to one embodiment of the present disclosure.

[0073] FIGS. 6 and 7 are exploded views of a booster module according to one embodiment of the present disclosure.

[0074] FIG. 8 is a cross-sectional view of a booster module according to one embodiment of the present disclosure.

[0075] FIG. 9 is a drawing showing airflow of a booster module according to one embodiment of the present disclosure.

[0076] FIG. 10 is an assembly diagram of a first air purification module according to an embodiment of the present disclosure.

[0077] FIG. 11 and FIG. 12 are exploded views of a first air purification module according to one embodiment of the present disclosure.

[0078] FIG. 13 is an assembly diagram of a control module according to one embodiment of the present disclosure.

[0079] FIGS. 14 and 15 are exploded views of a control module according to one embodiment of the present disclosure.

[0080] FIG. 16 is an assembly diagram of a second air purification module according to an embodiment of the present disclosure.

[0081] FIG. 17 and FIG. 18 are exploded views of a second air purification module according to one embodiment of the present disclosure.

[0082] FIGS. 19 to 21 are drawings for reference in the description of the bottom discharge of clean air according to one embodiment of the present disclosure.

[0083] Figures 22a to 22e are drawings for reference in the description of a comparative experiment of clean air upper and lower discharge and upper only discharge.

[0084] FIG. 23 and FIG. 24 are drawings for reference in the description of a case coupling structure according to one embodiment of the present disclosure.

[0085] FIGS. 25 to 28 are drawings for reference in the description of a support structure according to an embodiment of the present disclosure.

[0086] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the attached drawings. However, the present disclosure is not limited to these embodiments and can be modified in various forms.

[0087] In the drawings, parts that are not related to the description are omitted in order to clearly and concisely explain the present disclosure, and the same drawing reference numerals are used for the same or extremely similar parts throughout the specification.

[0088] Meanwhile, the suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification, and do not impart any particularly significant meaning or role to them. Therefore, the terms "module" and "part" may be used interchangeably.

[0089] Additionally, while terms such as "first" and "second" may be used in this specification to describe various elements, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0090] FIG. 1 is a perspective view of an air purifier according to an embodiment of the present disclosure. FIG. 2 is a cross-sectional view of an air purifier according to an embodiment of the present disclosure, and FIG. 3 is a diagram showing air flow in an air purifier according to an embodiment of the present disclosure. FIG. 4 is an exploded view of an air purifier according to an embodiment of the present disclosure.

[0091] Referring to FIGS. 1 to 4, the air purifier (1) includes a case (10) forming an exterior. The case (10) has suction holes (11a, 12a) formed on the circumferential surface so that air can be sucked in from various directions. Air can be sucked in from 360 degrees based on a vertical center line passing through the inner center of the case (10). A plurality of suction holes (11a, 12a) are formed spaced apart from each other in the circumferential direction. The plurality of suction holes (11a, 12a) are evenly formed in the circumferential direction along the circumferential surface of the case (10) so that air can be sucked in from any direction based on the case (10).

[0092] Meanwhile, in this specification, the up-down direction or vertical direction is defined as the axial direction. The axial direction may correspond to the central axis direction of the blower fan (140, 240) described later, i.e., the motor axis direction of the fan. In addition, the radial direction or horizontal direction may be understood as a direction perpendicular to the axial direction. In addition, the circumferential direction may be understood as the direction of an imaginary circle formed when rotating with the axial direction as the center and the radial distance as the rotation radius.

[0093] An air purifier (1) includes an air purification module (100, 200) that generates air flow. The air purification module (100, 200) includes a blower fan (140, 240) arranged inside a case (10) and a filter (120, 220) that removes foreign substances in the air flowing in through an intake port (11a, 12a).

[0094] Air flowing into the intake port (11a, 12a) can pass through the filter (120, 220). The filter (120, 220) is provided in a cylindrical shape and may have a filter surface for filtering air.

[0095] The case (10) may have a cylindrical shape. The case (10) may include a first case (11) having a semi-cylindrical shape and covering a portion of the outer surface of the air purification module (100, 200), and a second case (12) having a semi-cylindrical shape and covering the remaining portion of the outer surface of the air purification module (100, 200).

[0096] Alternatively, the case (10) may have a conical shape (a truncated cone shape), and the first case (11) and the second case (12) may each have a semi-conical shape.

[0097] The first case (11) and the second case (12) can be combined to form the exterior of the air purifier (1). The first case (11) covers the front of the air purifier (1) and may be referred to as a "front case" or "front cover." The second case (12) covers the rear of the air purifier (1) and may be referred to as a "rear case" or "rear cover."

[0098] The suction ports (11a, 12a) include a first suction port (11a) formed in the first case (11) and a second suction port (12a) formed in the second case (12). The suction ports (11a, 12a) connect the inside and the outside of the case (10). A plurality of suction ports (11a, 12a) are formed. The case (10) can form a plurality of suction ports (11a, 12a) on its peripheral surface.

[0099] A plurality of suction ports (11a, 12a) are formed evenly in the circumferential direction along the outer surface of the case (10) so that air can be sucked in from any direction based on the case (10).

[0100] The plurality of suction ports (11a, 12a) are formed in a stripe shape extending vertically. Alternatively, the plurality of suction ports (11a, 12a) may be formed by perforating in a circular or oval shape.

[0101] In this way, the case (10) is configured in a cylindrical shape, and a plurality of suction ports (11a, 12a) are formed along the outer surface of the case (10), so that the amount of air sucked in can increase.

[0102] Meanwhile, referring to FIGS. 1 to 4, the air purification module (100, 200) includes a first air purification module (100) and a second air purification module (200) arranged in a vertical direction.

[0103] For example, the second air purification module (200) may be arranged above the first air purification module (100). Since the first air purification module (100) is arranged at the bottom of the air purifier (1), it may be called a “lower air purification module” or “lower module,” and since the second air purification module (200) is arranged at the top of the air purifier (1), it may be called an “upper air purification module” or “upper module.”

[0104] The first air purification module (100) and the second air purification module (200) each include a blower fan (140, 240) and a filter (120, 220) that removes foreign substances in the air flowing in through the intake port (11a, 12a).

[0105] The first air purification module (100) includes a first blower fan (140) and a first filter (120) that removes foreign substances in the air flowing into the intake port. In addition, the first air purification module (100) further includes a first motor (130) that rotates the first blower fan (140).

[0106] The second air purification module (200) includes a second blower fan (240) and a second filter (220) that removes foreign substances in the air flowing into the intake port. In addition, the second air purification module (200) further includes a second motor (230) that rotates the second blower fan (240).

[0107] Meanwhile, the air purification module (100, 200) includes a first discharge port (110a) formed at the bottom and a second discharge port (210a) formed at the top. The first discharge port (110a) is formed at the bottom of the first blower fan (140) and the first filter (120). The second discharge port (210a) is formed at the top of the second blower fan (240) and the second filter (220). Air from which foreign substances have been removed in the filter (120, 220) is discharged downward through the first discharge port (110a) and upward through the second discharge port (210a).

[0108] When the second air purification module (200) is placed above the first air purification module (100), the first discharge port (110a) is formed at the bottom of the first air purification module (100), and the second discharge port (210a) is formed at the top of the second air purification module (200).

[0109] Additionally, a lower discharge grill (110) including multiple grills and designed to guide lower airflow is disposed at the lower end of the first air purification module (100). Additionally, an upper discharge grill (210) including multiple grills and designed to guide upper airflow is disposed at the upper end of the second air purification module (200).

[0110] The upper discharge grill (210) may each include a cylindrical inner wall (211) and an outer wall (212). The plurality of grills of the upper discharge grill (210) may each connect the inner wall (211) and the outer wall (212) and may be arranged in a radial structure.

[0111] The lower discharge grille (110) may include a plurality of grilles having a concentric circle structure. The plurality of grilles may be a plurality of circles having the same center and different radii. The plurality of grilles may each include a section that is bent outward in the radial direction. The lower discharge grille (110) may include a plurality of grilles that are bent outward at a predetermined angle. The lower discharge grille (110) may be arranged at the discharge port (110a) to transmit downward discharge airflow laterally.

[0112] A bottom plate (170) is placed on the lower side of the first air purification module (100). The bottom plate (170) is placed so as to contact the ground and supports the air purification module (100, 200).

[0113] On the upper surface of the bottom plate (170), a flow guide (170a) is arranged to laterally guide air discharged downward through the first discharge port (110a). The bottom plate (170) may further include a base (170b) that supports the flow guide (170a). The flow guide (170a) may be formed on the upper surface of the base (170b). In addition, the flow guide (170a) and the base (170b) may be combined to form the bottom plate (170).

[0114] Air from which foreign substances have been removed in the first filter (120) is discharged downward through the first discharge port (110a). Air from which foreign substances have been removed in the second filter (220) is discharged upward through the second discharge port (210a).

[0115] According to the present disclosure, even if two air purification modules are stacked vertically, air is not discharged upward from the lower air purification module. Therefore, by forming suction ports (11a, 12a) on the peripheral surface of the case (10), suction performance can be improved, while preventing air discharged from the lower air purification module from being re-introduced into the upper air purification module.

[0116] Conventional two-stage air purifiers have a problem in that the discharge airflow of the lower air purification module is configured to be directed upward, which reduces air purification performance due to re-intake of the purified airflow. In the present disclosure, the discharge airflow direction of the lower air purification module is changed to downward, thereby preventing a backflow and improving air purification performance.

[0117] In addition, according to the present disclosure, since the air purifier (1) product does not have a mechanical structure for preventing a return airflow and a configuration for discharge, the product can be made more compact and the degree of freedom in design, such as the arrangement of internal components, can be improved.

[0118] For example, by positioning the control module (400) at the center of the air purifier (1) product, the length of the power and signal wires and the connection structure can be made more efficient, and the overall product height can be reduced. In addition, by positioning the control module (400) between the air purification modules (100, 200) and controlling the air purification modules (100, 200) with a single integrated control module (400), the air purification modules (100, 200) do not each have a control module, so the overall product height can be reduced.

[0119] Meanwhile, the particle size of general allergen substances is on the order of 3 to 100 ㎛, and since it is larger than fine dust, it has the property of settling to the bottom. Therefore, the airflow for floating allergen particles and capturing them with the filter (120, 220) can be implemented through the lower airflow discharged downward by the first air purification module (100). Therefore, allergen substances that cause allergies can be effectively removed through the lower airflow discharged downward by the first air purification module (100).

[0120] Meanwhile, the air purifier (1) may be equipped with a UVC LED (see 481, 482 in Fig. 14) that outputs ultraviolet rays of a wavelength band that has a sterilizing effect on bacteria, mold, and microorganisms, and an ionizer (not shown) that eliminates bacteria and mold by passing electricity inside the case (10).

[0121] Meanwhile, the air purification module (100, 200) includes a fan housing (145, 245) that accommodates a blower fan (140, 240), and a plurality of support parts (150, 250) that extend vertically from the fan housing (145, 245). The plurality of support parts (150, 250) may extend in the length direction of the air purifier (1) product. The number of support parts (150, 250) may vary depending on the model size and specifications. In addition, some of the support parts (150, 250) may be configured to have at least one different shape, size, or material from the rest.

[0122] A wire cover (155, 255) covering the support (150, 250) may be placed on at least one side of a plurality of support members (150, 250). The support members (150, 250) and the wire cover (155, 255) may be spaced apart from each other to form a space in which wires, etc. may be placed.

[0123] In addition, the air purification module (100, 200) may further include a wire cover (115, 215) in which wires, etc. can be placed. The motors (130, 230) may be accommodated in the motor fastening portions (125, 225), respectively.

[0124] The air purification module (100, 200) includes a filter mounting portion (160, 260) on which a filter (120, 220) is mounted, and a control module (400) is placed between the filter mounting portions (160, 260).

[0125] Net steel (165, 265) is placed between the filter (120, 220) and the blower fan (140, 240) to prevent the body or other objects from entering the space where the blower fan (140, 240) is placed.

[0126] Meanwhile, a top cover (270) is placed on the top of the combined case (10). An upper discharge grill (210) is placed on the inside of the top cover (270).

[0127] Meanwhile, a booster module (300) that controls the wind direction of air discharged through the second discharge port (210a) may be placed on the upper side of the air purification module (100, 200). A booster module (300) that changes the discharge direction of air flow generated from the second air purification module (200) may be placed on the upper side of the second air purification module (200).

[0128] The booster module (300) can send the air discharged from the second air purification module (200) over a longer distance. In addition, the booster module (300) can blend airflows by rotating left and right, thereby forming various airflows. Depending on the embodiment, the booster module (300) can also move in an up and down direction to form a more diverse airflow.

[0129] The booster module (300) can be detachably mounted on the top of the second air purification module (200). In addition, a contact power structure is applied to the booster module (300) and the second air purification module (200), so that when mounted, power can be supplied from the second air purification module (200) to the booster module (300).

[0130] When cleaning of parts within the booster module (300), such as the booster fan (330), is required, or when cleaning of the upper discharge grill (210) at the top of the second air purification module (200), etc. is required, the hygienic aspect can be enhanced by separating and managing the booster module (300).

[0131] The booster module (300) includes an outer cover (320), an inner grill (355) disposed on the inner side of the outer cover (320) and having an outlet (see 355a in FIG. 5) formed therein, a rear suction grill (311) having an intake (see 311a in FIG. 6) formed therein, a booster fan (330) disposed on the front side of the rear suction grill (311) and on the inner side of the inner grill (355), and a motor (340) that rotates the booster fan (330).

[0132] The rear suction grille (311) may be a part of the rear cover (310) that forms the exterior of the rear of the booster module (300). Alternatively, the rear suction grille (311) may be provided separately and combined with the rear cover (310).

[0133] The rear cover (310) may have an opening formed through which the upper part of the booster neck (360) passes. In addition, the rear cover (310) may be joined to the booster neck (360) using a predetermined fastening member.

[0134] The booster module (300) is supported by a booster neck (360) and can be mounted on the second air purification module (200).

[0135] The booster module (300) may be provided to be movable. The booster module (300) may be in an inclined upright position or in a lying down position, as illustrated in FIG. 1.

[0136] The booster module (300) further includes a display panel (390) arranged on the front of the booster fan (330). The display panel (390) can cover the entire front of the booster fan (330). The motor (340) can be arranged on the inside of the booster fan (330).

[0137] The booster fan (330) may be a sirocco fan. While a radial fan is used to discharge airflow through the front grill, a sirocco fan can discharge airflow through the inner grill (355) on the side. Accordingly, a display panel (390) can be placed on the front of the fan to obscure the fan structure. In addition, a sirocco fan has the advantage of reducing noise compared to a radial fan.

[0138] In addition, the booster module (300) further includes an internal flow guide (350) that is arranged between the outer cover (320) and the inner grill (355) and changes the flow direction of air discharged through the discharge port (355a) of the inner grill (355).

[0139] A slit (351) is formed between the inner euro guide (350) and the display panel (390). Air discharged through the discharge port (355a) of the inner grill (355) passes through the slit (351) and is discharged from the booster module (300).

[0140] FIG. 5 is an assembly diagram of a booster module according to an embodiment of the present disclosure, and FIGS. 6 and 7 are exploded views of a booster module according to an embodiment of the present disclosure.

[0141] FIG. 8 is a cross-sectional view of a booster module according to an embodiment of the present disclosure, and FIG. 9 is a drawing showing airflow of a booster module according to an embodiment of the present disclosure.

[0142] Referring to FIGS. 5 to 9, a display panel (390) displaying operating information of the air purifier (1) is positioned on the front of the booster module (300). The display panel (390) can move together with the booster module (300). The user can better view the information displayed on the display panel (390) at the top of the product.

[0143] A booster fan (330) and a booster motor (340) are arranged on the rear side of the display panel (390). The booster motor (340) is arranged inside the booster fan (330). The display panel (390) covers the entire front side of the booster fan (330) and the booster motor (340), so that the booster fan (330) is not exposed to the user.

[0144] More preferably, the booster fan (330) may be a sirocco fan. When a slit fan is used, the flow is forward, making it unsuitable for a slit-shaped flow path, requiring a front grille. However, when a sirocco fan is used, the discharge flow resistance to the slit structure is reduced, which is advantageous for the slit structure. Accordingly, the bottom grille can be omitted, and the fan and inner grille are not visible from the outside.

[0145] The rear cover (310) and the outer cover (320) are combined to form a space for accommodating components inside. A booster fan (330) and a booster motor (340) can be placed in the inner space of the outer cover (320).

[0146] An inner grill (355) in which an outlet (355a) is formed and an internal flow guide (350) that changes the direction of air flow discharged through the outlet (355a) of the inner grill (355) are placed between the outer cover (320) and the booster fan (330).

[0147] The inner grille (355) is positioned on the side of the booster fan (330). Air flow due to the rotation of the booster fan (330) occurs along the inner grille (355) outlet (355a) on the side and the internal flow guide (350).

[0148] An internal flow path (352) including a forwardly curved surface is arranged on the inner surface of the internal flow path guide (350). An end of the internal flow path guide (350) and an end of the display panel (390) are spaced apart at a predetermined interval to form a slit (351).

[0149] The air discharged through the discharge port (355a) of the inner grill (355) passes through the internal passage (352) and the slit (351) and is discharged from the booster module (300).

[0150] According to the present disclosure, dust accumulation on the booster fan (330) and grill (355) is improved by discharging the airflow through the slit (351), and the aesthetic aspect is improved by making the fan (330) and grill (355) invisible from the outside.

[0151] According to the present disclosure, airflow is transmitted through the inner grille (355), internal flow path (352), and slit (351) on the side of the booster fan (330), so that the blades of the booster fan (330) are not visible from the outside, and the size of the motor (340) can also be reduced. In addition, according to the present disclosure, the problem of dust accumulating on the front grill can be improved by removing the front grill.

[0152] The rear cover (310) includes a joining portion (312) that is joined to the outer cover (320) and a grill portion (311) in which an intake port (311a) is formed. The grill portion (311) includes a plurality of grills and may be the rear intake grill (311) described above. The rear surface of the outer cover (320) may be configured to correspond to the shape and joining structure of the joining portion (312). For example, when the rear cover (310) and the outer cover (320) are joined, a step portion may be formed at the rear surface of the outer cover (320) so that the outer lines are smoothly connected, and a joining member that is joined to the joining portion (312) may be arranged at the step portion. Meanwhile, the outer cover (320) may be joined to the inner flow guide (350) by the joining member on the inner surface.

[0153] The configuration from the front display panel (390) to the rear suction grill (311) located at the top of the air purifier (1) can also be called a “booster head.”

[0154] The booster module (300) / booster head is coupled to and supported by the booster neck (360). In addition, the booster neck (360) is coupled to the air purification module (100, 200), which is the main body of the air purifier (1).

[0155] The booster neck (360) can be connected to the uppermost part of the second air purification module (200). Accordingly, at least a portion of the clean air flow discharged through the second discharge port (210a) formed at the upper end of the second air purification module (200) can be introduced into the suction port (311a) of the rear suction grill (311).

[0156] The upper part of the booster neck (360) can be combined with the booster module (300). The lower part of the booster neck (360) can be connected to the second air purification module (200). To facilitate connection between the booster neck (360) and the second air purification module (200), a protrusion protruding downward can be formed on the lower part of the booster neck (360).

[0157] A head rotation part (380) may be located at the lower side of the booster neck (360). The head rotation part (380) may be located on the inner side of the inner wall (211) of the upper discharge grill (210). The head rotation part (380) may include a structure for rotating the booster module (300), a case for accommodating internal components, etc., and may be connected to or accommodate components such as a stepper motor, ionizer, and wires.

[0158] The upper part of the head rotation part (380) can be coupled with the booster neck (360). The lower part of the head rotation part (380) can be coupled with another mechanical structure of the second air cleaning module (200). For example, the lower part of the head rotation part (380) can be coupled to the upper part of the second fan housing (245). Alternatively, the lower part of the head rotation part (380) can be coupled to the upper part of the second motor coupling part (225). In another embodiment, a separate coupling part (not shown) may be provided between the lower part of the head rotation part (380) and the upper part of the second fan housing (245) or the second motor coupling part (225).

[0159] Meanwhile, the booster module (300) includes a power module (370). The power module (370) may include a wire for power supply, a signal wire for signal transmission, and a terminal connected to the wire and signal wire.

[0160] When the booster module (300) is mounted on the second air purification module (200), the terminal of the power module (370) comes into contact with the terminal of the second air purification module (200) and can receive power from the second air purification module (200).

[0161] FIG. 10 is an assembly diagram of a first air purification module according to an embodiment of the present disclosure, and FIGS. 11 and 12 are exploded views of the first air purification module according to an embodiment of the present disclosure.

[0162] Referring to FIGS. 10 to 12, a first discharge port (110a) that opens downward is formed at the bottom of the first air purification module (100). A lower discharge grill (110) that changes the wind direction of air flowing downward is arranged at the first discharge port (110a).

[0163] A first circular discharge port (110a) is formed at the bottom of the first air purification module (100). Air from which foreign substances have been removed in the first filter (120) is discharged downward through the first discharge port (110a).

[0164] The lower discharge grill (110) may include a plurality of grills bent at a predetermined angle in the outward direction. The lower discharge grill (110) may be arranged at the first discharge port (110a) to transmit the downward discharge airflow laterally.

[0165] The first air purification module (100) includes a first filter mounting portion (160) on which a first filter (120) is mounted. The first filter (120) can be detachably mounted on the first filter mounting portion (160). The first filter (120) has a hollow cylindrical shape, and air can be introduced through the outer circumference of the first filter (120). In the process of passing through the first filter (120), impurities such as fine dust in the air can be filtered out.

[0166] Since the first filter (120) has a cylindrical shape, air can be introduced from any direction based on the first filter (120). Accordingly, the air filtering area can be increased.

[0167] The first filter mounting portion (160) may be provided in a cylindrical shape corresponding to the shape of the first filter (120). The first filter (120) may be slidably introduced toward the first filter mounting portion (160) during the mounting process. Conversely, the first filter (120) may be slidably withdrawn from the first filter mounting portion (160) during the dismounting process.

[0168] The first air purification module (100) includes a first fan housing (145) disposed on the lower side of the first filter (120), a first blower fan (140) rotatably disposed inside the first fan housing (145), and a first fan motor (130) that rotates the first blower fan (140). In addition, the first air purification module (100) may further include a wire cover (115) that protects a wire connected to the first fan motor (130).

[0169] The first blower fan (140) draws in air in the axial direction and discharges the air radially upward. The first fan housing (145) can accommodate the first blower fan (140) and form a fan path that guides the air flowing by the first blower fan (140) downward.

[0170] The first fan motor (130) may be supported by the first motor fastening member (125). The rotational axis of the first fan motor (130) may extend upward from the first fan motor (130) and may be connected to the first blower fan (140) by penetrating the bottom portion of the first motor fastening member (125).

[0171] A first magnet (180) is arranged on both sides of the first fan housing (145). The first magnet (180) can be coupled with a metal piece of the first case (11). In addition, the first magnet (180) can be coupled with a metal piece of the second case (12).

[0172] According to an embodiment, each of the first magnets (180) may include a plurality of magnets, some of which may be coupled to the metal piece of the first case (11), and the remaining some of which may be coupled to the metal piece of the second case (12).

[0173] Additionally, the magnets and metal pieces may be implemented in a mutually interchangeable manner. For example, metal pieces may be placed on both sides of the first fan housing (145), and magnets may be placed on the first case (11) and the second case (12).

[0174] A plurality of support members (150) extend upward from the first fan housing (145). For example, the support members (150) may be long beams. A wire cover (155) covering the support members (150) may be arranged on at least one surface of the plurality of support members (150). The support members (150) and the wire cover (155) may be spaced apart from each other by a predetermined interval to form a space in which wires, etc. may be arranged.

[0175] Net steel (165) is placed between the first filter (120) and the first blower fan (140) to prevent a body or other objects from entering the space where the first blower fan (140) is placed.

[0176] A bottom plate (170) is placed on the lower side of the first air purification module (100). The bottom plate (170) is placed so as to contact the ground and supports the air purification module (100, 200).

[0177] On the upper surface of the bottom plate (170), a flow guide (170a) is arranged to laterally guide air discharged downward through the first discharge port (110a). The bottom plate (170) may further include a base (170b) that supports the flow guide (170a).

[0178] FIG. 13 is an assembly diagram of a control module according to an embodiment of the present disclosure, and FIGS. 14 and 15 are exploded views of a control module according to an embodiment of the present disclosure.

[0179] Referring to FIGS. 13 to 15, the control module (400) has an outer appearance formed by combining an upper cover (410) and a lower cover (420), and houses a main PCB (430) on which circuits such as a controller that controls the overall operation of the air purifier (1) are mounted.

[0180] In addition, the upper cover (410) and the lower cover (420) have an open center, and an upper filter pressing plate (440) and a lower filter pressing plate (450) are respectively arranged in the open center. The upper filter pressing plate (440) and the lower filter pressing plate (450) may each be connected to a plurality of springs (435).

[0181] The control module (400) may be located between the first air purification module (100) and the second air purification module (200). The control module (400) may be located above the first air purification module (100) and below the second air purification module (200).

[0182] Since the control module (400) is placed in the middle of the first air purification module (100) and the second air purification module (200), the length and deviation of the wiring connecting the control module (400) and the first and second air purification modules (100) can be minimized, and there is an advantage in that the wiring structure can be simplified.

[0183] In addition, since the filter press plate (440, 450) is integrated with the upper and lower covers (410, 420), vibration and noise can be further reduced, and manufacturing costs can be reduced.

[0184] When the first filter (120) is mounted on the first filter mounting portion (160) of the first air purification module (100), the first filter (120) presses the lower filter pressing plate (450). When the second filter (220) is mounted on the second filter mounting portion (260) of the second air purification module (200), the second filter (220) presses the upper filter pressing plate (440). Accordingly, the filters (120, 220) can be better supported.

[0185] Additionally, the control module (400) includes an upper UVC LED (481) and a lower UVC LED (482). The upper UVC LED (481) outputs UVC light upward toward the second air purification module (200) and the second filter (220). The lower UVC LED (482) outputs UVC light downward toward the first air purification module (100) and the first filter (120).

[0186] UV light can typically be categorized by wavelength. For example, UV light can be categorized into UVA (320 to 400 nm), UVB (280 to 320 nm), and UVC (200 to 280 nm). In particular, short-wavelength UVC is effective for sterilization, as it destroys bacterial DNA and causes chemical reactions in specific substances.

[0187] The mounting portion (460) supports the main PCB (430). In addition, various sensors such as an LED sensor (471), a laser sensor (472), and a gas sensor (473) may be mounted on the mounting portion (460). Some sensors (e.g., the LED sensor (471)) may further include a cover (465).

[0188] The LED sensor (471) can sense the amount of dust by shining infrared LED light and detecting the light scattered by dust. The laser sensor (472) can detect the amount of dust using laser light. The gas sensor (473) can detect the amount of gas in the air.

[0189] Although an LED sensor (471), a laser sensor (472), and a gas sensor (473) are exemplified in FIGS. 14 and 15, the present disclosure is not limited thereto, and the types and combinations of sensors provided may vary. In addition, one or more communication modules (not shown), such as Wi-Fi, may be provided within the control module (400).

[0190] FIG. 16 is an assembly diagram of a second air purification module according to an embodiment of the present disclosure, and FIGS. 17 and 18 are exploded views of the second air purification module according to an embodiment of the present disclosure.

[0191] Referring to FIGS. 16 to 18, a second discharge port (210a) that is opened upward is formed at the upper portion of the second air purification module (200). An upper discharge grill (210) that changes the wind direction of air flowing upward is arranged at the second discharge port (210a).

[0192] For example, the second discharge port (210a) may be formed in a ring shape. The upper discharge grille (210) may be formed in a radial shape. A hollow upper cover (270) is arranged to surround the upper discharge grille (210). A booster module (300) may be coupled to the center of the upper discharge grille (210). A rotating part (380) may be arranged in the central opening of the upper discharge grille (210), and the rotating part (380) may be coupled to a booster neck (360) that supports the booster module (300).

[0193] Air from which foreign substances have been removed in the second filter (220) is discharged upward through the second discharge port (210a).

[0194] In the second air purification module (200), the second filter (220) is also arranged in the second filter mounting portion (260), and can be described similarly to the first filter (120) and the first filter mounting portion (160) described above. However, there is a difference in that the second filter (220) and the second filter mounting portion (260) are located on the lower side of the second blower fan (240) and the second fan housing (245), whereas the first filter (120) and the first filter mounting portion (160) are located on the lower side of the first blower fan (140) and the first fan housing (145).

[0195] The second air purification module (200) includes a second fan housing (245) positioned on the upper side of the second filter (120), a second blower fan (240) positioned rotatably inside the second fan housing (245), and a second fan motor (230) that rotates the second blower fan (240).

[0196] In addition, the second air purification module (200) may further include a wire cover (215) that protects the wire connected to the second fan motor (230). The second air purification module (200) may further include a rotation bearing (290) that reduces frictional force generated during rotation.

[0197] The second blower fan (240) draws in air in the axial direction and discharges the air radially upward. The second fan housing (245) can accommodate the second blower fan (240) and form a fan path that guides the air flowing by the second blower fan (240) upward.

[0198] The second fan motor (230) may be supported by the second motor fastening member (225). The rotational axis of the second fan motor (230) may extend downward from the second fan motor (230) and may be connected to the second blower fan (240) by penetrating the upper surface of the second motor fastening member (225).

[0199] Second magnets (280) are arranged on both sides of the second fan housing (245). The second magnets (280) can be coupled with the metal pieces of the first case (11). In addition, the first magnets (180) can be coupled with the metal pieces of the second case (12).

[0200] According to an embodiment, each of the second magnets (280) may include a plurality of magnets, some of which may be coupled to the metal piece of the first case (11), and the remaining some of which may be coupled to the metal piece of the second case (12).

[0201] Additionally, the magnets and metal pieces may be implemented in a mutually interchangeable manner. For example, metal pieces may be placed on both sides of the second fan housing (245), and magnets may be placed on the first case (11) and the second case (12).

[0202] A plurality of support members (250) extend downward from the second fan housing (245). For example, the support members (250) may be long beams. A wire cover (255) covering the support members (250) may be arranged on at least one surface of the plurality of support members (250). The support members (250) and the wire cover (255) may be spaced apart from each other by a predetermined interval to form a space in which wires, etc. may be arranged.

[0203] Net steel (265) is placed between the second filter (220) and the second blower fan (240), so as to prevent the body or other objects from entering the space where the second blower fan (240) is placed.

[0204] FIGS. 19 to 21 are drawings for reference in the description of the bottom discharge of clean air according to one embodiment of the present disclosure.

[0205] Figure 19 illustrates the airflow path of the lower exhaust airflow, and Figure 20 visualizes the lower exhaust airflow using a laser. Figure 21 is an enlarged view of the lower exhaust airflow path guide structure.

[0206] Referring to FIGS. 19 to 21, a first discharge port (110a) is formed at the bottom of the first air purification module (100), and a bottom discharge grill (110) for guiding the bottom discharge airflow is arranged at the first discharge port (110a).

[0207] The lower discharge grill (110) may include a plurality of grills bent at a predetermined angle in the outward direction. The lower discharge grill (110) may be arranged at the first discharge port (110a) to transmit the downward discharge airflow laterally.

[0208] When the first motor (130) rotates the first blower fan (140), a bottom discharge airflow is formed in which the air purified in the first filter (120) is discharged to the first discharge port (110a).

[0209] On the upper surface of the bottom plate (170), a flow guide (170a) is arranged to guide air discharged downward through the first discharge port (110a) laterally.

[0210] Particles of common allergens are larger and heavier than indoor airborne dust particles measuring 1 ㎛, ranging from 3 to 100 ㎛ in size, and tend to settle to the floor. For example, mold particles are 10 ㎛ in size, house dust allergen particles are 15 ㎛ in size, and pollen particles are 50 ㎛ in size.

[0211] Viruses, cigarette smoke, etc. are very small and do not settle but rather remain suspended, and indoor floating dust remains suspended for a considerable period of time, taking 9 to 10 hours to settle from the ceiling to the floor of a house.

[0212] However, under the same conditions, mold particles, house dust allergen particles, and pollen particles float and settle for only a short time, from a few minutes to a few seconds. Therefore, air purifiers struggle to capture allergen particles, and using a vacuum cleaner to remove the accumulated particles is the only option.

[0213] According to the present disclosure, by floating allergen particles in the downward airflow discharged by the first air purification module (100), an airflow for capturing them by the filter (120, 220) can be implemented.

[0214] Meanwhile, according to one embodiment of the present disclosure, the bottom discharge airflow velocity can be controlled in response to the gravitational settling velocity (Terminal Velocity) of the allergen particles. The bottom discharge airflow velocity can be set to be greater than the gravitational settling velocity.

[0215] The rotation speed of the first blower fan (140) can be controlled based on the gravitational settling velocity of the allergen particles. The rotation speed of the first blower fan (140) can correspond to a lower discharge airflow velocity set greater than the gravitational settling velocity. A controller mounted on the main PCB (430) of the control module (400) can control the speed of the first blower fan (140).

[0216] Gravitational settling velocity can be calculated by using the balance between gravity, buoyancy, and drag of a particle. For example, the gravitational settling velocity of an allergen particle can be calculated using the well-known Stokes equation for calculating the settling velocity.

[0217] The bottom exhaust airflow velocity can be set to be greater than the gravitational settling velocity of larger house dust allergen particles so as to suspend both 10 μm mold particles and 15 μm house dust allergen particles. For example, the bottom exhaust airflow velocity can be set to be greater than 0.0038 m / s.

[0218] The euro guide (170a) includes a curved portion (173), a flat portion (171) extending laterally from the curved portion (173), and a boss (172) protruding upward from an end of the flat portion (171).

[0219] The boss (172) can form an airflow that is effective in floating allergen particles. The boss (172) can reduce the flow resistance at the end. The boss (172) can prevent the flow separation phenomenon at the end. The boss (172) can be formed in a ring shape along the edge of the flow guide (170a). The boss (172) protrudes from the flat portion (171) by a predetermined height (d1) to prevent the occurrence of turbulence at the end and to raise the airflow. Accordingly, the flow separation phenomenon can be prevented while effectively floating allergen particles on the floor.

[0220] Meanwhile, if the height (d1) of the boss (172) is too high, the airflow may be excessively upwardly diverted, which may be inappropriate for floating allergen particles on the floor. Therefore, it is preferable that the height (d1) of the boss (172) be formed to be less than several millimeters to prevent the flow separation phenomenon.

[0221] The curved portion (173) may be formed to surround the central pillar (175) of the bottom plate (170). The curved portion (173) reflecting the curvature of the euro guide (170a) may be formed to be round with a predetermined radius of curvature (R1). The radius of curvature (R1) may be set so as to naturally guide the lower discharge airflow to the side.

[0222] The grill bending angle of the lower discharge grill (110) can be formed at 20 to 40 degrees so as to raise the airflow by more than 20 degrees to float particles on the floor.

[0223] In addition, the radius of curvature (R1) may be set corresponding to the grill bending angle of the lower discharge grill (110). For example, a predetermined angle (ag1) may be determined from the vertical direction corresponding to the grill bending angle of the lower discharge grill (110), and a radius of curvature (R1) capable of forming the determined angle (ag1) may be applied. More specifically, the angle (ag1) may be set smaller than the grill bending angle of the lower discharge grill (110).

[0224] The predetermined angle (ag1) may be the angle between the central pillar (175) and the curved portion (173). In this case, the predetermined angle (ag1) may be smaller than the discharge airflow angle through the discharge port (110). The discharge airflow angle may correspond to the grill arrangement angle and the grill bending angle of the lower discharge grill (110).

[0225] The curved portion (173) can naturally guide the lower discharge airflow laterally to reduce flow resistance. According to the present disclosure, a curvature is applied to the bottom plate (170) to transfer the lower discharge airflow laterally, and a boss (171) is applied to the end to form a turbulent flow for floating allergen particles. That is, the flow guide (170a) reflects the slope and curvature, and a boss is reflected to improve flow separation, thereby minimizing the resistance of the lower discharge airflow.

[0226] Figures 22a to 22e are drawings for reference in the description of a comparative experiment of clean air upper and lower discharge and upper-only discharge.

[0227] Case 1 of FIGS. 22a to 22e visualizes an allergen removal experiment when discharging from the upper and lower sides, and is depicted over time in the left region (2210). Case 2 of FIGS. 22a to 22e visualizes an allergen removal experiment when discharging from the upper side only, and is depicted over time in the right region (2220).

[0228] Figure 22a shows the starting point, Figure 22b shows the point after 1 second, Figure 22c shows the point after 15 seconds, Figure 22d shows the point after 60 seconds, and Figure 22e shows the point after 300 seconds.

[0229] Referring to FIGS. 22a to 22e, it can be seen that when only the top discharge is applied, a stagnant flow zone (A) is generated at the bottom after a short floating time of the allergen particles.

[0230] However, by applying upper / lower discharge, the flow circulation within the space is smooth, so allergen particles with a high airflow influence can be better removed.

[0231] When the removal performance of allergen particles larger than 2.8㎛ is expressed as a relative ratio compared to the removal performance of fine dust (0.3㎛), allergen particles can be removed by 18% or more when the bottom discharge airflow is applied.

[0232] FIG. 23 and FIG. 24 are drawings for reference in the description of a case coupling structure according to one embodiment of the present disclosure. FIG. 23 illustrates a magnet and a metal piece in a separated state of the case, and FIG. 24 is a cross-sectional view illustrating a coupled state of the magnet and the metal piece when the case is viewed from above.

[0233] The air purification module (100, 200) includes a first magnet (180) and a second magnet (280). The second magnet (280) is positioned above the first magnet (180). The first air purification module (100) includes the first magnet (180), and the second air purification module (200) may include the second magnet (280).

[0234] For example, first magnets (180) may be placed on both sides of the first fan housing (145) of the first air purification module (100). Additionally, second magnets (280) may be placed on both sides of the second fan housing (245) of the second air purification module (200).

[0235] The first magnet (180) can be combined with the metal piece (15) of the first case (11). In addition, the first magnet (180) can be combined with the metal piece (15) of the second case (12).

[0236] The second magnet (280) can be combined with the metal piece (15) of the first case (11). In addition, the second magnet (280) can be combined with the metal piece (15) of the second case (12).

[0237] According to an embodiment, each of the first magnets (180) may include a plurality of magnets, some of which may be coupled to the metal piece of the first case (11), and the remaining some of which may be coupled to the metal piece of the second case (12).

[0238] Additionally, the magnets and metal pieces may be implemented in a mutually interchangeable manner. For example, metal pieces may be placed on both sides of the first fan housing (145), and magnets may be placed on the first case (11) and the second case (12).

[0239] Meanwhile, the first case (11) may include a lower metal piece (15b) coupled to the first magnet (180) and an upper metal piece (15a) coupled to the second magnet (280).

[0240] The second case (12) may also include a lower metal piece (15b) coupled to the first magnet (180) and an upper metal piece (15a) coupled to the second magnet (280).

[0241] The lower metal pieces (15b) of the first case (11) and the second case (12) are coupled to the first magnet (180). The upper metal pieces (15a) of the first case (11) and the second case (12) are coupled to the second magnet (280).

[0242] Previously, when stacking two-stage air purification modules, the cases were separate, making the disassembly and assembly process complex and time-consuming. For example, the eight-point connection structure increased the number of components (magnets and metal pieces), and the perceived disconnection in the middle reduced the overall aesthetic appeal.

[0243] In order to improve this, the present disclosure integrates the upper and lower outer grills instead of having two for each air purification module, thereby improving the completeness of the exterior appearance, reducing the number of joint structural parts, and improving convenience. According to the present disclosure, the first case (11) at the front and the second case (12) at the rear are each integrated into a common cover for the air purification module (100, 200), thereby simplifying the separation and connection processes and reducing manufacturing costs. In addition, according to the present disclosure, there is an advantage in that the internal state can be checked by separating only one of the first case (11) and the second case (12).

[0244] A control module (400) may be placed between the first air purification module (100) and the second air purification module (200). The control module (400) may include a dust sensor (474). For example, the dust sensor (474) may include at least one of the LED sensor (471), laser sensor (472), and gas sensor (473) described above.

[0245] According to the present disclosure, some of the support members (150, 250) are formed as a truss structure in which multiple straight members are arranged in a plurality of triangular configurations, thereby securing mechanical rigidity while increasing the suction area. Hereinafter, the support member structure will be described in detail with reference to the drawings.

[0246] FIGS. 25 to 28 are drawings for reference in the description of a support structure according to an embodiment of the present disclosure.

[0247] Referring to FIGS. 25 to 28, the air purification module (100, 200) includes a fan housing (145, 245) and a plurality of first support members (2510) extending longitudinally from the fan housing (145, 245).

[0248] One side of the first support member (2510) may be connected to the fan housing (145, 245) and the other side may be connected to the control module (400). Accordingly, the first support member (2510) may support the filter (120, 220) mounted on the filter mounting member (160, 260) from the side.

[0249] The first support member (2510) is formed as a truss structure in which multiple straight members are arranged in a plurality of triangular configurations. At least two first support members (2510) may be arranged facing each other on the side of the filter (120, 220).

[0250] The air purification module (100, 200) may include one or more second support members (2520) extending longitudinally from the fan housing (145, 245) and a wire cover (2530) covering at least one surface of the second support members (2520). The wire cover (2530) may be arranged at a predetermined interval on one side of the second support members (2520).

[0251] In order to secure sufficient space to accommodate wires, etc., the width (sb2) of the second support (2520) may be wider than the width (sb1) of the first support (2510). Since at least one side of the second support (2520) is blocked by the wire cover (2530), the second support (2520) may use a general beam column rather than a truss structure.

[0252] The first air purification module (100) and the second air purification module (200) may each include a first support member (2510).

[0253] The first support portion (2510) of the first air purification module (100) may extend upward from the first fan housing (145). The first support portion (2510) of the second air purification module (200) may extend downward from the second fan housing (245).

[0254] If a general pillar structure is applied to the side of the filter (120, 220), the suction area of ​​the filter (120, 220) may decrease by the area of ​​the pillar, and the air purification performance may decrease. However, by using the first support member (2510) of the truss structure, an additional suction area can be secured on the side of the filter (120, 220), and the flow resistance due to the shielding of the pillar can also be minimized.

[0255] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. A case with a suction port formed on the periphery; A first air purification module including a first blower fan disposed inside the case and a first filter for removing foreign substances in the air flowing into the intake port, and a first discharge port formed at the bottom; and A second air purification module including a second blower fan disposed inside the case and a second filter for removing foreign substances in the air flowing into the intake port, and a second discharge port formed at the top; The second air purification module is arranged above the first air purification module, The air from which foreign substances have been removed in the first filter is discharged downward through the first discharge port, An air purifier in which air from which foreign substances have been removed in the second filter is discharged upward through the second discharge port.

2. In paragraph 1, Further comprising a bottom plate disposed on the lower side of the first air purification module and in contact with the ground; An air purifier in which a flow guide is arranged on the upper surface of the bottom plate to guide air discharged downward through the first discharge port laterally.

3. In paragraph 2, The above Euro guide is, An air purifier comprising a curved portion, a flat portion extending laterally from the curved portion, and a boss protruding upward from an end of the flat portion.

4. In paragraph 1, In the above first outlet, An air purifier having a lower discharge grille including a plurality of grilles bent in an outward direction.

5. In paragraph 4, The above plurality of grills are air purifiers having a concentric circle structure.

6. In paragraph 1, An air purifier further comprising a booster module arranged above the second air purification module and controlling the wind direction of air discharged through the second discharge port.

7. In paragraph 6, The above booster module, outer cover, An inner grill arranged on the inside of the outer cover and having a discharge port formed therein, Rear intake grille where the intake is formed, A booster fan disposed at the front of the rear intake grille and disposed on the inner side of the inner grille, An air purifier comprising a motor for rotating the above booster fan.

8. In paragraph 7, The above booster module, A display panel placed on the front of the above booster fan, and It further includes an internal flow guide arranged between the outer cover and the inner grill to change the flow direction of air discharged through the outlet of the inner grill. An air purifier in which air discharged through the outlet of the inner grill passes through a slit formed between the inner euro guide and the display panel.

9. In paragraph 8, An air purifier in which the above display panel covers the entire front of the above booster fan.

10. In paragraph 9, An air purifier in which the above motor is placed inside the above booster fan.

11. A case with suction holes formed on the periphery; An air purification module including a blower fan disposed inside the case and a filter for removing foreign substances in the air flowing into the intake port; and A booster module disposed above the air purification module; The above air purification module, It includes a first discharge port formed at the bottom and a second discharge port formed at the top, The air from which the above foreign substances have been removed is It is discharged in a downward direction through the first discharge port and discharged in an upward direction through the second discharge port. An air purifier in which at least some of the air discharged through the second discharge port is introduced into the booster module.

12. In paragraph 11, Further comprising a bottom plate disposed on the lower side of the air purification module and in contact with the ground; An air purifier in which a flow guide is arranged on the upper surface of the bottom plate to guide air discharged downward through the first discharge port laterally.

13. In paragraph 12, The above Euro guide is, An air purifier comprising a curved portion, a flat portion extending laterally from the curved portion, and a boss protruding upward from an end of the flat portion.

14. In paragraph 11, In the above first outlet, An air purifier having a lower discharge grille including a plurality of grilles bent in an outward direction.

15. In paragraph 14, The above plurality of grills are air purifiers having a concentric circle structure.

16. In paragraph 11, The above booster module, outer cover, An inner grill arranged on the inside of the outer cover and having a discharge port formed therein, Rear intake grille where the intake is formed, A booster fan disposed at the front of the rear intake grille and disposed on the inner side of the inner grille, An air purifier comprising a motor for rotating the above booster fan.

17. In paragraph 16, The above booster module, A display panel placed on the front of the above booster fan, and It further includes an internal flow guide arranged between the outer cover and the inner grill to change the flow direction of air discharged through the outlet of the inner grill. An air purifier in which air discharged through the outlet of the inner grill passes through a slit formed between the inner euro guide and the display panel.

18. In paragraph 17, An air purifier in which the above display panel covers the entire front of the above booster fan.

19. In paragraph 16, An air purifier in which the above motor is placed inside the above booster fan.

20. In paragraph 11, The above booster module, It is detachably mounted on the top of the above air purification module, The above booster module, An air purifier further comprising a power module that, when the booster module is mounted on the air purification module, comes into contact with a terminal of the air purification module and receives power from the air purification module.

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