Portable air purifier

Abstract

The present invention provides a portable air cleaner. The portable air cleaner of the present invention can include a housing portion in which an accommodation space is formed, having an inlet portion to intake air and a discharge portion to discharge air; a filter portion provided at an inner side of the housing portion facing the inlet portion; a fan module portion provided at an inner side of the housing portion facing the discharge portion; a filter housing in which the filter portion is detachably provided, located between the filter portion and the fan module portion, guiding movement of air from the filter portion to the fan module portion; and a sterilization portion installed in the filter housing, irradiating sterilization light toward the filter portion.

Description

Technical Field

[0001] This invention relates to portable air purifiers, and more specifically to a portable air purifier capable of sterilizing a filter section. Background Technology

[0002] Air purifiers are widely used devices in modern life. They are devices that filter out physical particles such as dust, fine dust, and ultrafine dust, odor particles, chemical substances such as harmful gases, and microorganisms such as bacteria and viruses to purify the air.

[0003] With the influence of urbanization, industrialization, and globalization, air purifiers have become an indispensable device in ordinary households. Furthermore, due to factors such as increased dust levels, a rise in allergy sufferers, and improved living standards, the demand for them is showing a rapid upward trend.

[0004] Air purifiers are used in spaces exceeding 100m² in typical households. 2 When considering the above-mentioned environment, it is acceptable to construct a relatively large device. Such a device can incorporate filters for physical particles such as dust, filters for chemical substances such as gases, and filters for microorganisms such as bacteria and viruses. In other words, a large-sized air purifier capable of housing multiple filters can be used in a spacious environment.

[0005] However, using large air purifiers in narrow spaces such as single rooms, vehicle interiors, or very spacious areas like public libraries, or outdoors, is inefficient in terms of space utilization, portability, and energy consumption. Furthermore, for users who move frequently, smaller, portable air purifiers are more suitable for personal use than larger ones. Against this backdrop, portable air purifiers for personal use are being developed.

[0006] Portable air purifiers are designed to be small and lightweight for easy carrying. This makes them convenient for users to carry and use in any desired location. In other words, portable air purifiers are suitable for users with lifestyles that involve frequent travel or moving between multiple locations, rather than those intended for prolonged use in a single location such as the home.

[0007] Prior art (Korean Patent Publication No.: 10-2019-0029478A, Invention Title: Portable Air Purifier) ​​relates to an invention of an air purifier, wherein a rear panel for drawing in air and a front panel for expelling air are arranged horizontally. Therefore, external air flowing into the inside of the housing through the rear panel passes sequentially through a filter section and a fan assembly, and is then discharged to the outside of the portable air purifier through the exhaust port.

[0008] However, since the prior art does not include an additional sterilization device for the sterilization filter section, the possibility of the filter section becoming contaminated is increased.

[0009] Furthermore, when an additional sterilization device for the sterilization filter section is installed inside the prior art, an additional mounting bracket for fixing the sterilization device needs to be added inside the housing. Because this additional mounting bracket is added inside the housing, the size of the filter section and fan assembly becomes relatively smaller, resulting in a reduction in air purification capacity.

[0010] Furthermore, when the sterilization device is additionally installed and fixed to the fan module in the prior art, the sterilization light emanating from the sterilization device is interfered with by the filter housing of the fixed filter unit, resulting in inadequate sterilization of the filter unit. Moreover, when the sterilization device is installed in the fan module, the frictional resistance between the air drawn into the fan module inlet and the sterilization device increases, leading to a reduction in air delivery capacity.

[0011] Furthermore, the prior art casing is shaped like a cuboid extending vertically, with corners on the outer side. Therefore, inconvenience may occur when the user grasps the outer side of the casing. When a portable air purifier is placed in a structure with a downward-facing recessed groove, such as a cup support, a gap will form between the cylindrical cup support and the casing, causing the casing to wobble, resulting in problems such as vibration and noise. Summary of the Invention

[0012] The purpose of this invention is to provide a portable air purifier equipped with an additional sterilization device for a sterilization filter section, thereby blocking air pollution.

[0013] Furthermore, the present invention aims to provide a portable air purifier that, by providing a sterilization device inside the portable air purifier, minimizes the increase in resistance to the airflow path through the portable air purifier, thereby enabling it to achieve high air purification performance.

[0014] Furthermore, the present invention aims to provide a portable air purifier that, when the portable air purifier is mounted on a cup support, can reduce the occurrence of vibration and noise.

[0015] Furthermore, the purpose of this invention is to provide a portable air purifier that allows the user to comfortably hold the outside of the casing and move it.

[0016] The objectives of this invention are not limited to those mentioned above. Other objectives and advantages of the invention not mentioned can be understood through the following description, and can be further clearly understood through embodiments of the invention. Furthermore, those skilled in the art will readily understand that the objectives and advantages of this invention can be achieved through the structural elements and combinations thereof described in the appended claims.

[0017] In order to solve the technical problems described above, the portable air purifier of the present invention is characterized by having a sterilization section provided between the filter section and the fan module section, and sterilizing the filter section.

[0018] Specifically, a sterilization section is provided between the filter housing and the fan module section supporting the filter section, or a sterilization section is provided inside the filter housing. Sterilization of the filter section can be achieved using sterilization light irradiated from the sterilization section. Furthermore, since the sterilization section is located between the fan module section and the filter section and irradiates sterilization light towards the filter section that shields the inlet, it can prevent harmful sterilization light from being exposed to the outside of the housing section.

[0019] Furthermore, the technical feature of the portable air purifier of the present invention is that the sterilization section is arranged in a shape that extends in the vertical direction at the center of the fan module section, thereby minimizing the increase in airflow resistance.

[0020] Specifically, when multiple fan components are arranged in a vertical direction, the upper and lower ends of the sterilization part extending in the vertical direction do not protrude outward from the hub of the fan component. Therefore, the situation where the sterilization part obstructs the airflow path drawn into the fan component can be minimized.

[0021] Furthermore, the technical feature of the portable air purifier of the present invention is that, in the state of having an air flow path that extends horizontally through the housing, a sterilization section is provided between the filter section and the fan module section.

[0022] Specifically, the air flowing into the inlet of the housing moves horizontally, passes through the filter section, the sterilization section, and the fan module section in sequence, and is discharged through the outlet of the housing. Therefore, since the air movement path is short, the air flow resistance can be reduced.

[0023] Furthermore, the technical feature of the portable air purifier of the present invention is that, based on a first horizontal center line that passes through the center of the housing part in the horizontal direction and is located between the inlet part and the outlet part, the distances to the filter part and the fan module part are different from each other.

[0024] Specifically, in order for the sterilization unit to irradiate the filter unit with sterilization light, a predetermined interval needs to be maintained between the sterilization unit and the filter unit. Since the air delivery capacity of the fan module is an important factor for the air purification function, the fan module is positioned closer to the first horizontal centerline than the filter unit. Furthermore, the volume of the fan module is larger than the volume of the filter unit.

[0025] Furthermore, the technical feature of the portable air purifier of the present invention is that the cross-section of the housing portion provided in the recessed groove of a cup support member such as a vehicle is configured as circular or elliptical.

[0026] Specifically, the cross-section of the housing is circular or elliptical, so the housing can be stably placed in the groove of the cup support with a circular cross-section, and the distance between the housing and the cup support can be reduced, thereby reducing the possibility of vibration and noise.

[0027] Furthermore, the technical feature of the portable air purifier of the present invention is that the sterilization part is fixed between the fan module and the filter housing.

[0028] Specifically, the front of the sterilization unit is supported by a fixing protrusion on the filter housing, and the rear of the sterilization unit is supported by the fan module. Therefore, there is no need to install additional fixing brackets for fixing the sterilization unit, which minimizes the increase in airflow resistance.

[0029] Furthermore, the portable air purifier of the present invention is characterized by a protruding rib provided on the radially outer side of the flared opening. The protruding rib is spaced apart from the protective cover at a predetermined interval and forms an inclined surface parallel to the inclined surface of the protective cover. This provides the effect of suppressing airflow loss caused by return air and increasing the rigidity of the fan base to suppress deformation of the fan base caused by external forces.

[0030] The portable air purifier of the present invention may include a housing, a filter, a fan module, a filter housing, and a sterilization unit.

[0031] The housing portion may have an internal accommodating space and an air intake portion for drawing in air and an air exhaust portion for expelling air. Furthermore, the housing portion may include a first outer shell portion and a second outer shell portion.

[0032] A filter section, a sterilization section, and a fan module section are provided inside the first housing section. Furthermore, an inlet section is provided on one side of the first housing section, and an air exhaust section is provided on the other side facing the inlet section.

[0033] Furthermore, the first outer casing may include a first outer casing body and a maintenance door. The first outer casing body may have an inlet and an outlet, and a maintenance space on the side.

[0034] The maintenance door is detachably mounted on the first housing body and allows for the opening and closing of the maintenance space. The maintenance door may include a door body, a spacer-retaining protrusion, and a first mounting groove. The door body is detachably mounted on the first housing body. The spacer-retaining protrusion may protrude inwards from the door body. The spacer-retaining protrusion may extend toward at least one of the filter section and the filter housing.

[0035] Furthermore, the first mounting groove can be formed on the inner side of the door body along the vertical direction.

[0036] Furthermore, the first housing body may also include a second mounting groove, with a groove formed along the vertical direction on the inner side of the first housing body facing the first mounting groove. The fan module portion is inserted into the first and second mounting grooves on one and the other sides in the width direction, thereby constraining the movement of the fan module portion.

[0037] Furthermore, in the inlet section, a plurality of inlet grilles extending in the vertical direction can be provided on one side of the housing section to form inlet holes. The inlet grilles can also extend in the length direction, thereby guiding the airflow path along the length direction. Similarly, in the outlet section, a plurality of outlet grilles extending in the vertical direction can be provided on the other side of the housing section to form outlet holes. The outlet grilles can also extend in the length direction, thereby guiding the airflow path along the length direction. The inlet holes and outlet holes can face each other in the horizontal direction. Furthermore, the width length of the inlet section is shorter than the width length of the filter section.

[0038] Furthermore, the second outer casing is connected to the lower part of the first outer casing. A battery can also be housed inside the second outer casing.

[0039] An airflow path is formed on the inner side of the first outer shell portion, while no airflow path is formed on the inner side of the second outer shell portion. Furthermore, the cross-section of at least one of the first and second outer shell portions can be circular or elliptical. The first and second outer shell portions can be formed separately and then assembled, or they can be formed integrally.

[0040] Furthermore, the filter section can be disposed inside the housing section facing the inlet. The filter section can also be positioned inside the housing section and facing the inlet. The filter section can be positioned such that both sides in the width direction are in contact with the inside of the housing section. The filter section has a cuboid shape extending vertically. Furthermore, by mounting the filter section inside the filter housing, movement of the filter section can be restricted.

[0041] Furthermore, the filter section is detachably mounted on the filter housing, which can be located between the filter section and the fan module section. The filter housing can also guide air movement from the filter section to the fan module section.

[0042] Furthermore, the filter housing may include at least one of the following: housing body portion, flow path guide portion, fixing support portion, locking boss, first fixing protrusion, second fixing protrusion, and first connecting protrusion.

[0043] The outer casing body is fixed to the inside of the housing portion, and the filter portion is installed inside the outer casing body. Furthermore, the outer casing body may have openings on both sides along its length.

[0044] Furthermore, the flow path guide is provided on one side of the housing body and can form a channel for air to move from the filter section to the fan module section.

[0045] Furthermore, the fixing support portion can be located in the middle of the flow path guide portion. Also, the fixing support portion can extend in the vertical direction and have protrusions supporting the sterilization portion.

[0046] Furthermore, the locking protrusion can protrude inwards from the main body of the outer casing, thereby restricting the movement of the filter section. Also, the filter section, locked by the locking protrusion, can be positioned at a predetermined distance from the sterilization section.

[0047] Furthermore, the first fixing protrusion can protrude upwards towards the upper side of the outer casing body and be fixed to the first protrusion provided on the inner side of the casing body. Also, the second fixing protrusion can protrude downwards towards the lower side of the outer casing body and be fixed to the second protrusion provided on the inner side of the casing body.

[0048] The first connecting protrusion can protrude toward the fan module and be inserted into the fan module.

[0049] Furthermore, the flow path guide can be provided on both sides of the fixed support, extending in the vertical direction, and has a plurality of through holes.

[0050] Furthermore, the fixed support portion may include: a filter frame forming an inner hole extending in the vertical direction and connected to the flow path guide portion; and a plurality of fixed protrusions protruding from the filter frame toward the inner hole.

[0051] Furthermore, the sterilization unit can be installed in the filter housing and irradiate sterilization light onto the filter. The sterilization unit can also be inserted into the inside of the filter frame and its movement is constrained by a fixing protrusion. The sterilization unit can be located at the center of the filter housing in the width direction and extends vertically. The sterilization unit may include: a printed circuit board extending vertically; and a sterilization light source located on both sides of the printed circuit board in the vertical direction, irradiating sterilization light onto the filter. The sterilization unit can be located at the center of the fan module in the width direction. Two fan components can be arranged vertically along the sterilization unit. The upper end of the sterilization unit can be positioned lower than the upper hub of the fan component located above the sterilization unit. The lower end of the sterilization unit can be positioned higher than the lower hub of the fan component located below the sterilization unit. The irradiation angle of the sterilization light source is 140 degrees to 160 degrees.

[0052] Furthermore, the fan module can be disposed inside the housing portion facing the exhaust portion. The fan module can include a fan housing, a fan component, and a fan base. The fan housing is fixed inside the housing portion. The fan component can be rotatably disposed inside the fan housing, causing air to move towards the exhaust portion. The fan base is attached to the fan housing and can guide air passing through the filter portion into the fan component. The width of the fan module is longer than the width of the exhaust portion.

[0053] Furthermore, the fan housing can be attached to the fan base in a manner that surrounds the fan component. The fan housing, fan component, and fan base can all be constructed from modules. Two fan housings and fan components can be arranged vertically on the fan base. The rotation axis of the fan component can intersect the sterilization unit at a right angle.

[0054] Furthermore, the fan housing may include at least one of a support plate, a connecting bracket, a side support portion, and a protruding post. The support plate may be arranged in a plate shape at a position facing the fan component. The connecting bracket may extend outward from the support plate. The side support portion may be connected to the connecting bracket and form a circular or quadrilateral frame around the periphery of the support plate. The protruding post may protrude from the side support portion toward the fan base and engage with the fan base.

[0055] Furthermore, the fan housing may include: a wire guide, which is continuously disposed on the connecting bracket and supports the wire disposed along the side of the connecting bracket. Additionally, the fan housing may include: a wire fixing protrusion, which protrudes from the side support portion, is located laterally to the wire disposed outside the connecting bracket, and restrains the wire from detachment.

[0056] Furthermore, the fan component may include: a hub located at the center of the fan housing, which receives external power and rotates. The fan component may also include: a plurality of fan blades, equally spaced along the outer periphery of the hub. Additionally, the fan component may include: a shroud attached to the ends of the fan blades and arranged in a ring shape, spaced apart from the fan base.

[0057] Furthermore, the outer diameter of the hub and the inner diameter of the shroud can gradually decrease from the discharge section toward the inlet section.

[0058] Furthermore, the fan base may include at least one of the following: a base plate, a flared opening, a connecting protrusion, and a protruding rib.

[0059] The base plate is a plate shape with a hollow portion for air movement and extending in the vertical direction. The flared opening can be arranged in a ring shape on the inner side of the base plate facing the hollow portion. The flared opening can also have a recessed longitudinal section that surrounds the lower side of the inlet protrusion of the shroud. Furthermore, a connecting protrusion can protrude from the base plate and connect to a protruding post on the fan housing. A protruding rib can be arranged in a ring around the outer periphery of the flared opening. The protruding rib can also be arranged parallel to the outer side of the fan component.

[0060] Furthermore, the air flowing into the inlet can be guided horizontally, passing sequentially through the filter section, the filter housing, and the fan module section, and then discharged to the outside of the housing section through the outlet section.

[0061] Furthermore, the first horizontal centerline passing through the center of the housing section is located between the inlet section and the outlet section.

[0062] Furthermore, when the distance between the first horizontal centerline and the filter section is referred to as D1, and the distance between the first horizontal centerline and the fan module section is referred to as D2, D1 and D2 have different values. Moreover, D1 can have a value greater than D2.

[0063] Furthermore, the second horizontal center line, which intersects the first horizontal center line at a right angle and extends laterally at the center of the housing section, can pass through the width direction center of the inlet section, filter section, sterilization section, fan module section, and discharge section.

[0064] Furthermore, multiple fan components can be provided in the fan module section in the vertical direction. A sterilization section can be arranged parallel to a vertical virtual line that intersects the rotation center axis of the fan components and extends in the vertical direction. One side of the sterilization section can be supported by a fixing protrusion of the filter housing. The other side of the sterilization section can be supported by the fan module section.

[0065] In the portable air purifier of the present invention, a sterilization section is provided between the filter section and the fan module section, and the filter section is sterilized, thereby blocking air pollution.

[0066] Furthermore, in this invention, the sterilization section is disposed between the filter section and the fan module section, blocking the leakage of sterilization light irradiating the filter section towards the shielded inlet section to the outside of the housing section, thus providing a safe operating environment.

[0067] Furthermore, in this invention, there is no need to equip an additional fixing bracket for fixing the sterilization part. The sterilization part can be fixed between the filter housing and the fan module, or fixed inside the filter housing. Therefore, the increase in airflow resistance is minimized, thereby improving air purification performance.

[0068] Furthermore, in this invention, an additional mounting bracket for fixing the sterilization unit can be provided. Also, in this invention, the mounting bracket for fixing the sterilization unit is positioned to minimize the increase in airflow resistance, thereby improving air purification performance.

[0069] Furthermore, in this invention, with the sterilization section located at the center of the fan module section in the width direction and extending vertically, the upper and lower ends of the sterilization section do not protrude outwards from the hub of the fan component. Since the upper and lower ends of the sterilization section do not face the suction space formed by the outer side of the hub, the increase in flow resistance of the air drawn into the fan component is minimized, thereby improving air purification performance.

[0070] Furthermore, in this invention, the air flowing into the inlet of the housing moves horizontally, passes sequentially through the filter section, the sterilization section, and the fan module section, and is then discharged through the outlet of the housing. Therefore, heat dissipation of the sterilization section can be easily achieved, thereby improving the durability of the sterilization section, and the air movement path can be shortened, thereby improving the air purification performance.

[0071] Furthermore, in this invention, the fan module is positioned closer to the first horizontal centerline than the filter module. Therefore, not only is the reduction in air purification efficiency minimized, but the filter module is also sterilized, thereby preventing air pollution and improving customer satisfaction.

[0072] Furthermore, in this invention, the second outer shell is placed in a structure with a groove shape that is recessed to the lower side, such as a cup support, and air is drawn in through an inlet provided on the first outer shell without interfering with the external structure, thus improving air purification performance.

[0073] Furthermore, in this invention, the cross-section of the housing portion provided in the recessed groove of a cup support member, such as in a vehicle, is circular or elliptical. Therefore, compared to a housing portion with a polygonal cross-section, the distance between the housing portion and the cup support member is reduced, thereby reducing the occurrence of vibration and noise.

[0074] Along with the effects described above, the specific effects of the present invention will be described in conjunction with the following description of the specific content used to implement the present invention. Attached Figure Description

[0075] Figure 1 This is a perspective view of a portable air purifier according to an embodiment of the present invention.

[0076] Figure 2 This is a front view of a portable air purifier according to an embodiment of the present invention.

[0077] Figure 3 This is a rear view of a portable air purifier according to an embodiment of the present invention.

[0078] Figure 4 This is a top view of a portable air purifier according to an embodiment of the present invention.

[0079] Figure 5 This is a perspective view showing the state of the first outer casing separated in a portable air purifier according to an embodiment of the present invention.

[0080] Figure 6 and Figure 7 This is an exploded perspective view of a portable air purifier according to an embodiment of the present invention.

[0081] Figure 8 This is a diagram illustrating the airflow path along the horizontal direction through a portable air purifier according to an embodiment of the present invention.

[0082] Figure 9 This is an exploded perspective view of the housing portion according to an embodiment of the present invention.

[0083] Figure 10 This is a plan sectional view of a portable air purifier according to an embodiment of the present invention.

[0084] Figure 11 This is a diagram illustrating the direction of air movement in a portable air purifier according to an embodiment of the present invention.

[0085] Figure 12 This is a front view showing the state in which the sterilization section of an embodiment of the present invention is disposed between the fan module section and the filter section.

[0086] Figure 13 and Figure 14This is a perspective view showing the state of the filter housing located between the sterilization section and the filter section according to an embodiment of the present invention.

[0087] Figure 15 This is a perspective view showing a filter housing according to an embodiment of the present invention.

[0088] Figure 16 This diagram shows a state in which the sterilization section of an embodiment of the present invention is disposed in the center of the fan module section.

[0089] Figure 17 This is a perspective view showing the state of the fan housing separated in the fan module section according to an embodiment of the present invention.

[0090] Figure 18 This is a perspective view of a fan housing according to an embodiment of the present invention.

[0091] Figure 19 This is a perspective view showing the inner side of a fan housing according to an embodiment of the present invention.

[0092] Figure 20 This is a perspective view showing a fan component cover according to an embodiment of the present invention.

[0093] Figure 21 This is a perspective view showing the shaft connection portion of a fan component according to an embodiment of the present invention.

[0094] Figure 22 This is a front view of a fan component according to an embodiment of the present invention.

[0095] Figure 23 This is a diagram illustrating the hub of a fan component according to an embodiment of the present invention.

[0096] Figure 24 This is a cross-sectional view of a fan component according to an embodiment of the present invention.

[0097] Figure 25 This is a perspective view showing the fan base separated from the filter housing according to an embodiment of the present invention.

[0098] Figure 26 This is a perspective view of a fan base according to an embodiment of the present invention.

[0099] Figure 27 This diagram shows a state in which the sterilization section of an embodiment of the present invention is set apart from the filter section.

[0100] Figure 28 This diagram shows a state in which the sterilization section of an embodiment of the present invention is irradiated with sterilization light toward the filter section.

[0101] Figure 29This diagram shows a state in which a locking protrusion is provided on the rear side of the sterilization section according to an embodiment of the present invention.

[0102] Explanation of reference numerals in the attached figures

[0103] 1: Portable air purifier; 10: Housing part; 20: First outer shell part; 22: Accommodating space; 30: First outer shell body; 32: Inlet part; 33: Inlet grille; 34: Inlet hole; 36: Exhaust part; 37: Exhaust grille; 38: Exhaust hole; 40: Second mounting groove part; 42: First protrusion; 44: Second protrusion; 50: Maintenance door; 52: Door body; 54: Spacer retaining protrusion; 56: First mounting groove part; 60: Second outer shell part; 70: Filter part; 80: Filter shell; 90: Outer shell body part; 100: Flow path guide; 102: Through hole; 110: Fixing support; 112: Filter frame; 114: Inner hole; 116: Fixing protrusion; 117: Locking protrusion; 120: Locking boss; 130: First fixing protrusion; 132: Second fixing protrusion; 134: First connecting protrusion; 140: Fan module; 150: Fan housing; 151: Support plate; 152: Connecting bracket; 153: Wire guide; 154: Side support; 155: Wire fixing protrusion; 156: Protruding post; 157 158: Side wing; 160: Center guide; 170: Fan component; 171: Hub; 172: Hub plate; 173: Shaft joint; 174: First reinforcing protrusion; 175: Inner protrusion; 176: Second reinforcing protrusion; 177: Skirt; 180: Fan wing; 181: First end; 182: Second end; 183: First edge; 184: Second edge; 190: Protective cover; 191: Inlet protrusion; 200: Fan base; 201: Base plate; 202: Trumpet mouth; 203: Protruding rib; 204: Joint 205: Connecting guide protrusion; 210: Sterilization section; 211: Printed circuit board; 212: Sterilization light source; 220: Battery; A: First region; B: Second region; C: Center of housing; E: Length direction; H: Vertical direction; W: Width direction; P1: First horizontal center line; P2: Second horizontal center line; D1: Distance between the first horizontal center line and the filter section; D2: Distance between the first horizontal center line and the fan module section; S1: First rotation center axis; S2: Second rotation center axis; V: Vertical virtual line Detailed Implementation

[0104] The foregoing objectives, features, and advantages will be described in detail below with reference to the accompanying drawings, thereby enabling those skilled in the art to readily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of specific known technologies related to the present invention will be omitted if it is determined that such detailed descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar structural elements and are used accordingly.

[0105] Although terms such as "first" and "second" are used to describe a variety of structural elements, these structural elements are not limited to these terms. These terms are used only to distinguish one structural element from others, and unless specifically stated otherwise, a first structural element may also be a second structural element.

[0106] The following description of arranging any structural element "on the upper (or lower) part" or "on the upper (or lower) part" of a structural element can mean that not only is any structural element arranged in contact with the upper (or lower) surface of the structural element, but other structural elements can also be sandwiched between the structural element and any structural elements arranged on (or below) the structural element.

[0107] Furthermore, when it is described as any structural element being "connected," "joined," or "in contact" with other structural elements, it can mean that the structural elements are directly connected or in contact with each other, but it can also be understood as other structural elements being "interposed" between the structural elements, or that the structural elements are "connected," "joined," or "in contact" through other structural elements.

[0108] Throughout this specification, unless otherwise stated, each structural element may be singular or plural.

[0109] In this specification, unless the context clearly indicates otherwise, singular expressions include plural expressions. In this application, terms such as “constituting” or “comprising” should not be construed as necessarily including all of the multiple structural elements or steps described in the specification, but should be interpreted as excluding some of the structural elements or steps, or including additional structural elements or steps.

[0110] Throughout the specification, when referred to as “A and / or B”, unless otherwise stated, it means A, B, or A and B; when referred to as “C to D”, unless otherwise stated, it means C and below.

[0111] [Appearance of a portable air purifier]

[0112] Figure 1 This is a perspective view showing a portable air purifier 1 according to an embodiment of the present invention. Figure 2 This is a front view of a portable air purifier 1 according to an embodiment of the present invention. Figure 3 This is a rear view of a portable air purifier 1 according to an embodiment of the present invention. Figure 4 This is a top view of a portable air purifier 1 according to an embodiment of the present invention.

[0113] like Figures 1 to 4 As shown, the portable air purifier 1 of this embodiment can be formed into a generally cylindrical shape. Such a portable air purifier 1 can be shaped by a housing portion 10. Furthermore, the portable air purifier 1 of this embodiment draws in air through an inlet portion 32 provided on one side of the housing portion 10 and discharges air through an outlet portion 36 provided on the other side of the housing portion 10.

[0114] The housing portion 10 may be composed of a first outer shell portion 20 and a second outer shell portion 60, which together form the external framework of the portable air purifier 1. A plurality of components are housed within such a first outer shell portion 20 and second outer shell portion 60.

[0115] The first outer casing 20 can be formed such that both sides are open along a first direction, which is the length direction E. That is, both sides of the first outer casing 20 can be open along the length direction E. An inlet 32 ​​can be provided on one side of the first outer casing 20 in the first direction, and a discharge 36 can be provided on the other side of the first outer casing 20 in the first direction.

[0116] The inlet 32 ​​and the outlet 36 are located on opposite sides of the first housing 20. Furthermore, since the inlet 32 ​​and the outlet 36 are positioned facing each other, air moving through the inlet 32 ​​moves horizontally and is discharged through the outlet 36, thereby shortening the air's path and enabling smooth air circulation.

[0117] A second outer shell portion 60 is connected to the lower side of the first outer shell portion 20. The second outer shell portion 60 may be configured as a cylinder. Alternatively, the first outer shell portion 20 and the second outer shell portion 60 may have an outer shell shape in which their cross-section is circular or elliptical and extends in the vertical direction.

[0118] The portable air purifier 1 can be in the shape of a vertically placed cylinder or an elliptical cylinder with a curved outer surface, which is long in the vertical direction.

[0119] Therefore, the portable air purifier 1 can be inserted into a recessed slot on the downward side, such as a cup support, and installed stably. Furthermore, since the outer side of the portable air purifier 1 is curved, it is easy for the user to hold the outer side of the portable air purifier 1 and move it.

[0120] The directions are defined as follows: Using the second outer casing 60 as a reference, the direction where the first outer casing 20 is located is referred to as the upper part or upper side, and using the first outer casing 20 as a reference, the direction where the second outer casing 60 is located is referred to as the lower part or lower side. Furthermore, the "length direction E" and the "first direction" are the same direction, and the direction connecting the inlet 32 ​​and the outlet 36 of the casing 10 is defined as the length direction E. In addition, the "width direction W" and the "second direction" are the same direction, which is a direction that forms a right angle with the length direction E and extends horizontally. Furthermore, both the length direction E and the width direction W are perpendicular to the vertical direction H. Furthermore, the "vertical direction H" and the "third direction" are the same direction, and the vertical direction H and the vertical direction are the same direction. The above-described direction settings are based on the portable air purifier 1 being placed on the same plane as the horizontal line.

[0121] [Overall structure of a portable air purifier]

[0122] Figure 5 This is a perspective view showing the state in which the first outer casing 20 is separated in a portable air purifier 1 according to an embodiment of the present invention. Figure 6 and Figure 7 This is an exploded perspective view of a portable air purifier 1 according to an embodiment of the present invention.

[0123] like Figures 5 to 7 As shown, a portable air purifier 1 according to an embodiment of the present invention may include a housing part 10, a filter part 70, a fan module part 140, a filter housing 80, and a sterilization part 210.

[0124] The first outer casing 20 and the second outer casing 60 form the external framework of the portable air purifier 1. An accommodating space 22 is formed inside the first outer casing 20 and the second outer casing 60. Electrical components, including a filter section 70, a filter housing 80, a fan module section 140, a sterilization section 210, and a battery 220, are housed within this accommodating space 22. The first outer casing 20 and the second outer casing 60 preferably have sufficient strength to protect the housed components from external impacts.

[0125] A filter section 70 is disposed within the receiving space 22 of the first housing section 20, and is positioned between the fan module section 140 and the inlet section 32. Specifically, the filter section 70 is spaced a predetermined distance from the fan module section 140 and is located on one side of the fan module section 140 in the longitudinal direction E. Thus, the filter section 70 purifies the air drawn in through the inlet section 32 of the portable air purifier 1. The purified air passes through the filter section 70 and then through the fan module section 140 and the exhaust section 36, and is discharged laterally from the portable air purifier 1.

[0126] The filter section 70 can consist of a single filter, or multiple filters can be stacked as needed. Furthermore, the filter section 70 is used to secure the filter housing 80 to the filter.

[0127] The filter housing 80 is fixed inside the first housing portion 20, and an insertion space for accommodating the filter is formed inside the filter housing 80.

[0128] The fan module 140 is housed in the receiving space 22 inside the first housing 20 and can be disposed between the discharge section 36 and the filter section 70. More specifically, the fan module 140 can be disposed between the discharge section 36 and the filter housing 80. Furthermore, the sterilization section 210 can be disposed inside the filter housing 80, or disposed between the filter housing 80 and the fan module 140, and various other modifications can be implemented.

[0129] The fan module 140 is located on the other side of the filter section 70 in the first direction, and an exhaust section 36 is arranged on the other side of the first housing section 20 facing the fan module 140. The fan module 140 functions to draw in air that flows into one side of the filter section 70 through the inlet section 32, and to discharge air to the other side of the first housing section 20 through the exhaust section 36 provided on the other side of the first housing section 20.

[0130] This embodiment illustrates a fan module 140 configured as a diagonal-flow fan. Such a fan module 140 can draw in air passing through the filter section 70 axially and expel it in a direction between the axial and radial directions.

[0131] The sterilization unit 210 is located between the filter unit 70 and the fan module unit 140, and can be fixed to at least one of the filter housing 80 and the fan module unit 140.

[0132] The sterilization part 210 can be fixed to the filter housing 80. However, according to another embodiment of the present invention, the sterilization part 210 can be fixed to the fan module part 140, or fixed between the fan module part 140 and the filter housing 80, or fixed to the housing part 10, etc., and various modifications can be made.

[0133] If the sterilization section 210 is fixed to the fan module section 140, additional brackets are required to fix the sterilization section 210 to the fan module section 140, increasing production costs. Furthermore, since the sterilization section 210 is shaped to protrude outwards from the fan module section 140, the size of the filter housing 80 and the filter section 70 is reduced, potentially decreasing air filtration performance. Additionally, if the sterilization section 210 is integrally disposed inside the fan module section 140, the size of the fan components is reduced due to the installation of the sterilization section 210, resulting in reduced airflow capacity. Moreover, with the sterilization section 210 installed in the fan module section 140, the frictional resistance between the air drawn into the fan module section 140 and the sterilization section 210 increases, potentially reducing airflow capacity.

[0134] In this invention, in order to solve the above-mentioned problems, the sterilization part 210 is fixed to the filter housing 80.

[0135] Since the sterilization unit 210 of one embodiment of the present invention is fixed to the filter housing 80, the sterilization light irradiated from the sterilization unit 210 is not interfered with by the filter housing 80 and irradiates the filter section 70, thereby preventing a decrease in the sterilization performance of the sterilization unit 210. If the sterilization unit 210 is fixed to the fan module section 140, the sterilization light irradiated from the sterilization unit 210 may be reduced because the sterilization light irradiated from the sterilization unit 210 is interfered with by the filter housing 80 that fixes the filter section 70.

[0136] Furthermore, the filter housing 80, the sterilization unit 210, and the filter unit 70 constitute a module and are installed inside the housing 10. Since the sterilization unit 210 sterilizes the filter unit 70 by irradiation with sterilizing light, the installation position of the sterilization unit 210 and the distance between the filter unit 70 and the sterilization unit 210 are important design factors.

[0137] Therefore, when the filter housing 80, the sterilization section 210, and the filter section 70 are configured as a single module, even if the installation position of the fan module section 140 and the like changes depending on the model of the portable air purifier 1, the sterilization of the filter section 70 can be stably achieved because the distance between the sterilization section 210 and the filter section 70 is a fixed design element, and the cost increase caused by design changes can be reduced.

[0138] Furthermore, since the sterilization unit 210 is installed inside the filter housing 80, there is no need for an additional bracket to fix the sterilization unit 210, which reduces production costs. Also, because the sterilization unit 210 is installed inside the filter housing 80, the size of the fan module 140 and the filter section 70 is prevented from becoming smaller due to the installation of the sterilization unit 210, thereby preventing a reduction in air delivery capacity and air filtration capacity.

[0139] Furthermore, since the sterilization section 210 fixed to the filter housing 80 is arranged separately from the fan module section 140, the area of ​​the inlet for air to be drawn into the fan module section 140 is not reduced. However, when the fan module section 140 is fixed to the sterilization section 210, the area of ​​the inlet for air to be drawn into the fan module section 140 will be reduced, which may reduce the air delivery capacity.

[0140] Therefore, the sterilization part 210 can be fixed to at least one of the filter housing 80, the fan module part 140, and the housing part, but more preferably the sterilization part 210 is fixed to the filter housing 80.

[0141] The sterilization unit 210 is separated from the filter unit 70 by a set distance, and sterilization light is irradiated toward the filter unit 70. Since the sterilization light irradiated from the sterilization unit 210 is harmful to the human body, the installation position of the sterilization unit 210 is set to prevent the sterilization light from flowing out to the outside of the portable air purifier 1 through the inlet 32.

[0142] Furthermore, since a sterilization section 210 is provided between the filter section 70 and the fan module section 140 to sterilize the filter section 70, air pollution can be blocked. The sterilization section 210 is provided between the filter housing 80 supporting the filter section 70 and the fan module section 140, and sterilization of the filter section 70 can be achieved using sterilization light irradiated from the sterilization section 210. Moreover, since the sterilization section 210 is located between the fan module section 140 and the filter section 70, and irradiates sterilization light towards the filter section 70 which blocks the inlet section 32, harmful sterilization light can be prevented from exposing to the outside of the housing section 10.

[0143] The battery 220 is disposed in the accommodating space 22 inside the second housing 60 and can supply power for driving the portable air purifier 1.

[0144] [Component Arrangement Structure of Portable Air Purifier]

[0145] Figure 8 This is a diagram illustrating the airflow path along the horizontal direction through a portable air purifier 1 according to an embodiment of the present invention. Figure 10 This is a plan sectional view of a portable air purifier 1 according to an embodiment of the present invention. Figure 11This is a diagram showing the direction of air movement in a portable air purifier 1 according to an embodiment of the present invention.

[0146] like Figure 2 , Figure 8 , Figure 10 and Figure 11 As shown, the internal storage space 22 of the portable air purifier 1 can be divided into a first region A and a second region B. When the storage space 22 is divided along the vertical direction H, the upper region becomes the first region A, and the lower region becomes the second region B. It should be clarified that the first region A and the second region B are not physically divided regions, but are only conceptually distinguished regions.

[0147] In one embodiment of the present invention, the accommodating space 22 of the first outer shell portion 20 forming the skeleton of the portable air purifier 1 is designated as a first region A, and the accommodating space 22 inside the second outer shell portion 60 is designated as a second region B.

[0148] Structural elements related to air intake, purification, and exhaust are arranged in the first region A. Specifically, the first region A includes an inlet 32, a filter 70, a fan module 140, and an exhaust 36. A filter housing 80 and a sterilization unit 210 may also be added as needed. Thus, airflow is achieved in the first region A, penetrating the first housing 20 and flowing horizontally.

[0149] On one side of the first outer casing 20 ( Figure 8 On the right side (based on the reference), an inlet portion 32 with a plurality of inlet holes 34 is provided as a passage for air intake. On the other side of the first housing portion 20 ( Figure 8 On the left side (based on the reference), there is a discharge section 36 with a plurality of discharge holes 38, which serves as a channel for discharging purified air from the first area A. Thus, a longitudinal airflow path E is formed inside the first housing 20, connecting the inlet section 32, the filter section 70, the fan module section 140, and the discharge section 36.

[0150] That is, the first area A is equipped with an inlet 32, a filter 70, a filter housing 80, a sterilization section 210, and an exhaust section 36. The flow path required for the air drawn into the portable air purifier 1 to pass through the interior of the air purifier is formed in the first area A.

[0151] In the second area B, structural components not directly related to the airflow used for air purification are arranged. That is, the second area B may include a control unit including a PCB and a battery 220, etc.

[0152] According to this embodiment, the first outer shell portion 20 and the second outer shell portion 60 are formed into a cylindrical or elliptical cylindrical shape in which the vertical length H is longer than the lateral length. Furthermore, the vertical length H of the upper first region A is longer than the vertical length H of the lower second region B. That is, when the portable air purifier 1 is placed vertically, the upper first region A occupies a wider area than the lower second region B.

[0153] A battery 220 may be arranged inside the second housing portion 60, where the second region B is formed. The battery 220 may be configured to have a weight greater than the sum of the weights of the fan module portion 140, the filter portion 70, the filter housing 80, and the sterilization portion 210.

[0154] Typically, since the weight per unit volume of battery 220 is much greater than that of fan module 140, filter 70, filter housing 80 and sterilization unit 210, even without artificially increasing the weight or size of battery 220, battery 220 will have a greater weight than fan module 140, filter 70, filter housing 80 and sterilization unit 210.

[0155] When the battery 220, which is the weight of the portable air purifier 1 as described above, is disposed at the lower part of the portable air purifier 1, the center of gravity of the portable air purifier 1 will be shifted downward from the center in the vertical direction H to the lower part. That is, the center of gravity of the portable air purifier 1 will move towards the lower part of the portable air purifier 1 where the battery 220 is disposed.

[0156] With the center of gravity of the portable air purifier 1 shifted towards the lower part of the portable air purifier 1 where the battery 220 is located, as described above, the risk of the portable air purifier 1 being tipped over is reduced when it is placed vertically.

[0157] That is, when the portable air purifier 1 is placed vertically, the center of gravity of the portable air purifier 1 is located on the lower side because the battery 220 is located at the bottom of the portable air purifier 1, so the portable air purifier 1 will not easily tip over.

[0158] Furthermore, when the battery 220, which is a weight, is located at the bottom of the portable air purifier 1, the other components constituting the portable air purifier 1 need to be located at a higher position than the battery 220. That is, structural elements related to air intake, purification, and exhaust, as well as the sterilization section 210 for the sterilization filter section 70, need to be located at a higher position than the battery 220.

[0159] To ensure the charging capacity of the battery 220 required for smooth operation of the portable air purifier 1, the size of the battery 220 needs to be at least a predetermined size. Therefore, the portable air purifier 1 also needs to be equipped with an installation space of at least a predetermined size for installing the battery 220. Furthermore, since it is not easy to form an airflow path in the space where the battery 220 is located, the structural components related to air intake, purification, and exhaust can only be arranged in a position that avoids the battery 220, that is, at a position higher than the battery 220.

[0160] Due to this arrangement, in the portable air purifier 1, the flow path for air intake, purification, and exhaust is formed in a first region A, which is at a higher position than the battery 220. Therefore, the intake of air into the portable air purifier 1 and the exhaust of purified air from the portable air purifier 1 also occur at a higher position than where the battery 220 is located.

[0161] When purified air is expelled from the upper part of the portable air purifier 1 as described above, the purified air in the portable air purifier 1 can more easily reach the user's face.

[0162] When the portable air purifier 1 is placed on the ground below the user's face, it is more advantageous to use it vertically rather than horizontally to increase the amount of purified air from the portable air purifier 1 reaching the user's face.

[0163] Therefore, when the portable air purifier 1 is placed vertically, if the purified air is expelled from the top of the portable air purifier 1, the amount of purified air from the portable air purifier 1 reaching the user's face can be increased.

[0164] Furthermore, the battery 220, which is a weight, is located at the bottom of the portable air purifier 1. Thus, the structure in which the structural components related to air intake, purification, and exhaust are located at a higher position than the battery 220 can also help to expand the installation range of the portable air purifier 1.

[0165] As an example, when the portable air purifier 1 is used with the cup support inserted inside the vehicle, the area for air intake and the area for air purification and exhaust can be positioned higher than the cup support. Therefore, the portable air purifier 1 can maintain a high level of air purification performance while being stably placed inside the vehicle. For this purpose, the vertical length H of the second region B, where the battery 220 is located, is preferably set to be above the depth of the cup support.

[0166] As another example, when the lower part of the portable air purifier 1 is fixed using a clip-type support or the like, the portable air purifier 1 can be stably fixed without blocking the area where the portable air purifier 1 draws in air or the area where it discharges purified air.

[0167] Furthermore, even when the user holds the lower part of the portable air purifier 1 and moves it, the portable air purifier 1 can be moved stably without blocking the area where air is drawn in and the area where purified air is expelled.

[0168] That is, by arranging structural elements such as battery 220, which are not directly related to the flow of air used for air purification, in the lower part of the portable air purifier 1, and by using the lower part of the portable air purifier 1 to place and fix the portable air purifier 1, it is possible to simultaneously provide a high level of air purification performance and stable fixation of the portable air purifier 1.

[0169] In a portable air purifier 1 according to an embodiment of the present invention having the aforementioned structure, a first outer shell portion 20 having an inlet portion 32 and an outlet portion 36 is arranged on the upper side of a second outer shell portion 60. The first outer shell portion 20 is connected to the upper side of the second outer shell portion 60 where electrical components are mounted, and the first outer shell portion 20 is provided with an air intake portion 32 for drawing in air and an air exhaust portion 36 for expelling air. As a result, when a structure having a downwardly recessed groove shape, such as a cup support, is inserted into the first outer shell portion 20, air can be easily drawn into the inside of the first outer shell portion 20 through the inlet portion 32 and then discharged laterally to the first outer shell portion 20 through the outlet portion 36, thereby improving air purification efficiency.

[0170] The inner space of the first outer casing 20 can be divided, with reference to a first horizontal center line P1, into a direction toward the inlet 32 ​​and a direction toward the outlet 36. The first horizontal center line P1 is a virtual line passing through the center of the casing 10 and extending horizontally. Furthermore, the first horizontal center line P1 is located between the inlet 32 ​​and the outlet 36.

[0171] Based on this first horizontal centerline P1, a filter section 70 is arranged in the direction towards the inlet 32, and a fan module section 140 and a sterilization section 210 are arranged in the direction towards the outlet 36. Thus, air passing through the inlet 32 ​​passes through the filter section 70 and moves towards the inside of the fan module section 140 while impurities in the air are removed. Therefore, since the fan module section 140 can be prevented from being contaminated by impurities contained in the air, the durability of the fan module section 140 can be improved, and maintenance and repair costs can be reduced.

[0172] Furthermore, since the sterilization unit 210 uses sterilization light to sterilize the filter unit 70, it is necessary to ensure the irradiation distance for irradiating the sterilization light. Therefore, when the sterilization unit 210 is located on the first horizontal center line P1, or is set in the area facing the inlet 32 ​​with the first horizontal center line P1 as a reference, the installation area of ​​the filter unit 70 is excessively reduced, resulting in a decrease in air purification performance.

[0173] like Figure 11 As shown, the area towards the entrance 32 with the first horizontal center line P1 as the reference is the area between the first horizontal center line P1 and the entrance 32.

[0174] Therefore, with the sterilization section 210 located in the area between the first horizontal centerline P1 and the discharge section 36, the irradiation distance for irradiating sterilizing light from the sterilization section 210 toward the filter section 70 can be reliably ensured. Furthermore, since the installation area of ​​the filter section 70 for removing impurities from the air flowing in through the inlet section 32 can be ensured, a reduction in air purification performance can be prevented.

[0175] However, when the sterilization section 210 is positioned on the first horizontal centerline P1, or between the first horizontal centerline P1 and the inlet section 32, it is impossible to reliably ensure the irradiation distance for irradiating the sterilizing light from the sterilization section 210 towards the filter section 70. Therefore, since sterilization of the filter section 70 is not adequately achieved, contaminated air may be discharged.

[0176] Furthermore, if the installation area of ​​the filter section 70 is reduced in order to ensure the irradiation distance for irradiating the sterilizing light from the sterilization section 210 toward the filter section 70, the air purification performance may be reduced. In order to solve the problem described above, the sterilization section 210 is provided in the area centered on the first horizontal centerline P1 toward the discharge section 36. Therefore, the installation area of ​​the filter section 70 is increased, thereby preventing the air purification performance from being reduced.

[0177] However, if an additional mounting bracket is added to fix the sterilization unit 210, the installation area of ​​the fan module 140 will be reduced, thereby reducing the air delivery capacity of the fan module 140 and resulting in a decrease in air purification performance.

[0178] To solve the problem described above, instead of adding an additional mounting bracket for fixing the sterilization unit 210, the sterilization unit 210 is fixed between the filter housing 80 and the fan module 140, or fixed inside the filter housing 80. Therefore, the increase in airflow resistance is minimized, thereby improving air purification performance.

[0179] That is, since the front of the sterilization unit 210 is supported by the filter housing 80 and the rear of the sterilization unit 210 is supported by the fan module 140, there is no need to provide additional fixing brackets for fixing the sterilization unit 210, thus minimizing the increase in airflow resistance. Furthermore, since the installation area of ​​the fan module 140 is not reduced, the air delivery capacity of the fan module 140 is prevented from decreasing, and the resulting reduction in air purification performance is also prevented.

[0180] Furthermore, the filter section 70 is located inside the inlet section 32, and both sides of the filter section 70 in the width direction W are arranged to contact the inner side of the first housing section 20. Therefore, by blocking the leakage of sterilization light irradiated by the filter section 70 that shields the inlet section 32 to the outside of the housing section 10, a safe operating environment can be provided.

[0181] [Detailed structural features of portable air purifier components]

[0182] Figure 9 This is an exploded perspective view of the housing portion 10 according to an embodiment of the present invention. Figure 8 and Figure 9 As shown, a portable air purifier 1 according to an embodiment of the present invention may include at least one of a housing part 10, a filter part 70, a filter housing 80, a fan module part 140, a sterilization part 210, and a battery 220.

[0183] An accommodating space 22 is formed inside the housing portion 10, and various modifications can be made within the technical concept of having an air intake portion 32 and an air exhaust portion 36. In one embodiment of the present invention, the housing portion 10 may include a first outer shell portion 20 and a second outer shell portion 60.

[0184] A filter section 70, a sterilization section 210, and a fan module section 140 are provided on the inner side of the first outer casing 20. Furthermore, an inlet section 32 is provided on one side of the first outer casing 20, and an air discharge section 36 is provided on the other side facing the inlet section 32. Such a first outer casing 20 can be constructed from a single component, or it can be constructed from multiple components as needed. In one embodiment of the present invention, the first outer casing 20 may include a first outer casing body 30 and a maintenance door 50.

[0185] An accommodating space 22 is formed inside the first outer shell body 30. An air intake 32 is provided on one side of the first outer shell body 30, and an exhaust 36 is provided on the other side of the first outer shell body 30 facing the intake 32.

[0186] The first outer casing 30 can be configured as a tube with a cylindrical or elliptical cross-section. As needed, the first outer casing 30 can have a cross-section in which the diameter in the width direction W is longer than the diameter in the length direction E and extends in the vertical direction. The side of such a first outer casing 30 is open and forms a maintenance space. A maintenance door 50 is provided on the side of the first outer casing 30 in a detachable manner.

[0187] The first housing body 30, having an inlet 32 ​​and an outlet 36 and a maintenance space on its side, is configured such that its upper and lower sides can be blocked. A maintenance door 50 is provided on the first housing body 30 in a manner that allows for easy installation and removal, thereby enabling the opening and closing of the maintenance space.

[0188] In one embodiment of the present invention, the first outer shell body 30 may include at least one of an inlet portion 32, an outlet portion 36, a second mounting groove portion 40, a first protrusion 42, and a second protrusion 44.

[0189] The inlet portion 32 includes inlet grilles 33 extending in the vertical direction, and inlet holes 34 are provided between a plurality of inlet grilles 33. A plurality of inlet grilles 33 may be provided on one side of the housing portion 10 to form inlet holes 34 for drawing in air. Since the cross-section of the inlet grilles 33 extends along the length direction E, the inlet holes 34 located between the inlet grilles 33 are also formed along the length direction E. Therefore, air flowing in through the inlet portion 32 is guided to move along the length direction E.

[0190] Since the inlet hole 34 guides the flow of air into the inner side of the first outer casing 20 along the length direction E, it shortens the movement path of the air through the first outer casing 20 and purifies more air in a short time, thereby improving air cleaning efficiency.

[0191] Furthermore, since the inlet portion 32 extends vertically along one side of the first housing portion 20, that side of the first housing portion 20 will be used as a space for air intake. Also, since the inlet portion 32 is formed along one side of the curved first housing portion 20, the number of inlet holes 34 will increase compared to an inlet portion 32 that is parallel to the filter portion 70 and arranged along a straight line. Because the air intake flow rate increases according to the shape of this inlet portion 32, air cleaning efficiency can be improved.

[0192] The discharge section 36 includes discharge grilles 37 extending in the vertical direction, with discharge holes 38 provided between a plurality of discharge grilles 37. A plurality of discharge grilles 37 may be provided on the other side of the housing section 10 to form discharge holes 38 for discharging air. Since the cross-section of the discharge grilles 37 extends along the length direction E, the discharge holes 38 located between the discharge grilles 37 are also formed along the length direction E. Therefore, the air discharged through the discharge section 36 is guided to be discharged along the discharge grilles 37 in the length direction E.

[0193] Since the discharge port 38 guides the flow of air discharged from the outside of the first housing portion 20 along the length direction E, it will induce a shortening of the movement path of the air passing through the first housing portion 20 together with the inlet portion 32.

[0194] Furthermore, since the discharge section 36 extends vertically from the other side of the first housing section 20, most of the space on the other side of the first housing section 20 can be used as a space for exhausting air. Also, since the discharge section 36 is formed along the curved side of the first housing section 20, the number of discharge holes 38 increases compared to a discharge section 36 that is parallel to the fan module section 140 and arranged along a straight line. Because the airflow is increased according to the shape of the discharge section 36, air cleaning efficiency can be improved.

[0195] Furthermore, the inlet hole 34 and the outlet hole 38 can be configured to face each other in the horizontal direction. Since the inlet hole 34 and the outlet hole 38 are positioned facing each other in the longitudinal direction E, air flowing in through the inlet hole 34, after moving horizontally, will be discharged to the outside of the first housing portion 20 through the outlet hole 38. Therefore, since the path of air flowing through the first housing portion 20 is minimized, the frictional resistance during air movement is reduced, and the air delivery capacity is increased to purify more air in a shorter time, thus improving air cleaning efficiency. Furthermore, the power consumption required for the operation of the fan module portion 140 is reduced, thereby saving on electricity costs.

[0196] Furthermore, the width W of the inlet 32 ​​is shorter than the width W of the filter section 70. Therefore, air flowing into the inlet 32 ​​will pass through the filter section 70 and be purified, thereby improving air purification performance. If the width W of the inlet 32 ​​is the same as or smaller than the width W of the filter section 70, the air flowing into the inlet 32 ​​may fail to pass through the filter section 70 and move directly towards the fan module 140, potentially reducing air purification capacity.

[0197] A first protrusion 42 and a second protrusion 44, protruding inwards from the first housing body 30, engage with the filter housing 80 and constrain its movement. The first protrusion 42 and the second protrusion 44 are located on the inner side of the first housing body 30 facing the maintenance door 50, and fix the first fixing protrusion 130 and the second fixing protrusion 132 of the filter housing 80 (described later). Because the first protrusion 42 and the second protrusion 44 are positioned facing the maintenance door 50, they can be seen by the operator when the maintenance door 50 is open. Therefore, since the filter housing 80 secured to the first protrusion 42 and the second protrusion 44 can be easily separated, time and costs required for maintenance and repair work, including the replacement of the filter section 70, can be saved.

[0198] The fan module 140 can be inserted into the first mounting slot 56 and the second mounting slot 40 on one side and the other side in the width direction W to constrain its movement. The first mounting slot 56 is a slot shape that extends vertically inside the maintenance door 50, and the second mounting slot 40 is a slot shape that extends vertically inside the first housing body 30.

[0199] Since the first mounting groove 56 and the second mounting groove 40 are respectively arranged on both sides of the width direction W of the discharge section 36, the two side corners of the fan module section 140 are inserted into the first mounting groove 56 and the second mounting groove 40, which enables stable fixation of the fan module section 140. Furthermore, since no additional bracket is used to fix the fan module section 140, a miniaturized design of the portable air purifier 1 can be achieved, and production and maintenance costs can be saved due to the reduction in the number of parts.

[0200] The maintenance door 50 is detachably mounted on the first housing body 30, and various modifications can be made within the technical concept of providing a maintenance space on the side of the first housing body 30 for opening and closing. In one embodiment of the present invention, the maintenance door 50 may include at least one of a door body 52, a spacer-holding protrusion 54, and a first mounting groove 56.

[0201] The door body 52, which forms an opening on the side of the first outer casing 30 for maintenance, can be adapted in various ways. In one embodiment of the invention, the door body 52 has a curved cross-section and extends vertically. The door body 52 is detachably mounted on the side of the first outer casing 20 located between the inlet portion 32 and the outlet portion 36.

[0202] The spacer-retaining protrusion 54 protrudes inward toward the door body 52 and can be implemented in various ways within the technical concept of extending toward at least one of the filter section 70 and the filter housing 80. In one embodiment of the present invention, the spacer-retaining protrusion 54 is plate-shaped, protrudes inward toward the door body 52 and contacts or is spaced apart from the sides of the filter housing 80 and the filter section 70 at a predetermined distance.

[0203] The spacer protrusions are multiple and contact or are spaced apart from the sides of the filter housing 80 and the filter section 70 at predetermined intervals. This prevents the filter housing 80 and the filter section 70 from tilting toward the maintenance door 50 and guides the filter housing 80 and the filter section 70 to be positioned in a predetermined location.

[0204] The first mounting groove 56 is formed along the vertical direction on the inner side of the door body 52. ​​The first mounting groove 56 is formed along the vertical direction on the inner side of the door body 52 that contacts the corner of the fan module 140. In addition, a second mounting groove 40 is also provided on the inner side of the first outer shell body 30 facing the first mounting groove 56, with a groove formed along the vertical direction.

[0205] Such a first mounting groove 56 and a second mounting groove 40 are respectively provided on both sides of the discharge section 36 in the width direction W. As a result, the two corners of the fan module section 140 in the width direction W can be inserted into the inside of the first mounting groove 56 and the second mounting groove 40 and placed stably.

[0206] The second outer casing 60 is connected to the lower part of the first outer casing 20, and various modifications can be made within the technical concept of forming a space inside the second outer casing 60 for arranging electrical components including the battery 220.

[0207] At least one cross-section of the first outer shell portion 20 and the second outer shell portion 60 may be configured as circular or elliptical. Both the first outer shell portion 20 and the second outer shell portion 60 may be configured as cylindrical or elliptical, or only the second outer shell portion 60 may be configured as cylindrical or elliptical. Alternatively, if necessary, only the first outer shell portion 20 may be configured as cylindrical or elliptical.

[0208] When the second outer shell 60 is configured as a cylinder or ellipse and extends along the vertical direction H, the user can easily hold the outer periphery of the second outer shell 60 by hand, and can also easily place the second outer shell 60 into the cup support of the vehicle, which has a generally circular cross-section.

[0209] Furthermore, when the first outer casing 20 is configured as a cylinder or an ellipse, the friction generated when air moving horizontally through the inner side of the first outer casing 20 comes into contact with the curved inner side of the first outer casing 20 will be reduced, thereby enabling smoother airflow.

[0210] Furthermore, since an airflow path is formed inside the first outer casing 20 but not inside the second outer casing 60, air can be smoothly drawn in and expelled through the first outer casing 20 even when the second outer casing 60 is placed on a cup support or held by the user's hand, thereby improving ease of use.

[0211] Furthermore, since the second outer casing 60 is placed in a structure with a downwardly recessed groove shape, such as a cup support, and can draw in air through the inlet 32 ​​provided on the first outer casing 20 without being interfered with by the external structure, the air purification performance can be improved.

[0212] Furthermore, since the cross-section of the housing portion 10 is circular or elliptical, the housing portion 10 can be stably placed in the groove of the cup support member with a circular cross-section, and the distance between the housing portion 10 and the cup support member is reduced, thereby reducing the possibility of vibration and noise.

[0213] The first outer shell portion 20 and the second outer shell portion 60 can be molded separately and then assembled, or they can be molded as a single piece, allowing for various modifications.

[0214] Figure 12 This is a front view showing the state in which the sterilization unit 210 of an embodiment of the present invention is disposed between the fan module unit 140 and the filter unit 70. Figure 13 and Figure 14 This is a perspective view showing the state of the filter housing 80 located between the sterilization section 210 and the filter section 70 according to an embodiment of the present invention.

[0215] like Figures 12 to 14 As shown, the filter section 70 is disposed inside the first housing section 20, and various modifications can be made within the technical concept of purifying the air flowing into the inside of the inlet section 32. In one embodiment of the present invention, the filter section 70 can be formed into a cuboid shape. Since the filter section 70 is disposed inside the filter housing 80 and can be easily separated from the filter housing 80, the time required for filter replacement can be saved.

[0216] In one embodiment of the present invention, a filter section 70 is disposed inside the housing section 10 facing the inlet section 32. The filter section 70 is located inside the housing section 10 and is disposed in a shape facing the inlet section 32. Since the two sides of the filter section 70 in the width direction W are disposed in contact with the inside of the housing section 10, the air flowing in through the inlet section 32 is guided to move toward the filter section 70, thereby improving the air purification performance.

[0217] Furthermore, since the filter section 70 is a cuboid shape extending in the vertical direction, the area of ​​the filter section 70 in contact with air is increased, thereby improving air purification performance. In addition, since the filter section 70 is installed inside the filter housing 80 and its movement is restricted, it is possible to prevent a decrease in air purification performance due to movement of the filter section 70.

[0218] According to this embodiment, the inlet section 32, the filter section 70, the fan module section 140, and the outlet section 36 are arranged along a first direction, and the airflow can also occur in the same direction. That is, the airflow caused by the operation of the fan module section 140 can be realized in a straight line direction with the same arrangement direction as the inlet section 32, the filter section 70, the fan module section 140, and the outlet section 36.

[0219] When airflow is achieved in a straight line as described above, the resistance to airflow is reduced accordingly, allowing for smoother airflow. Therefore, since the fan module 140 can achieve sufficient air intake and corresponding sufficient air exhaust, the air purification performance of the portable air purifier 1 can be improved accordingly.

[0220] Figure 15 This is a perspective view showing a filter housing 80 according to an embodiment of the present invention.

[0221] like Figures 13 to 15 As shown, the filter housing 80 and the filter section 70 can be combined to form a module, and in addition to the structural elements, the sterilization section 210 can be combined with the filter housing 80. That is, since the filter housing 80, the filter section 70, and the sterilization section 210 can form a single module, the time and cost required for product assembly and maintenance can be saved.

[0222] Furthermore, the filter housing 80 is detachably arranged with the filter section 70, and the filter housing 80 can be located between the filter section 70 and the fan module section 140. The filter housing 80 can also guide air movement from the filter section 70 to the fan module section 140. Moreover, various modifications can be made to the technical concept of the sterilization section 210 fixedly positioned apart from the filter section 70. In one embodiment of the present invention, the filter housing 80 may include at least one of the following: a housing body section 90, a flow path guide section 100, a fixing support section 110, a locking boss 120, a first fixing protrusion 130, a second fixing protrusion 132, and a first connecting protrusion 134.

[0223] The outer casing body 90 is fixed to the inside of the casing 10, and various modifications can be made within the technical concept of mounting the filter 70 inside. The outer casing body 90 forms the external framework of the filter casing 80.

[0224] In this embodiment, the housing body portion 90 is exemplified as a frame with four sides open on both sides in its longitudinal direction E. An insertion space for accommodating the filter portion 70 is formed inside such a housing body portion 90. Furthermore, the rear of the housing body portion 90 is open, thereby forming a channel for inserting the filter portion 70 into the insertion space inside the housing body portion 90.

[0225] The filter section 70 is installed in the insertion space inside the housing body 90. A mounting groove or a locking boss 120 may also be provided on the inner side of the housing body 90, so that the filter section 70 can be securely installed inside the housing body 90.

[0226] The outer casing body 90 has openings on both sides in the longitudinal direction E. The length of the side of the outer casing body 90 facing the maintenance door 50 in the width direction W is shorter than the length of the side of the outer casing body 90 on the other side in the width direction W. Therefore, when the maintenance door 50 is separated from the first outer casing body 30 and the filter section 70 is replaced, the filter section 70 can be easily pulled out through one side of the outer casing body 90, saving time required for replacing the filter section 70.

[0227] The flow path guide 100 is provided on one side of the housing body 90, and various modifications can be made within the technical concept of forming a channel for air to move from the filter section 70 to the fan module section 140. In one embodiment of the present invention, the flow path guide 100 is located between the filter section 70 and the fan module section 140, and has a plurality of through holes 102 formed therein.

[0228] With reference to the filter housing 80, the direction in which the filter section 70 is located is referred to as the rear, and the direction in which the discharge section 36 is located is referred to as the front. The flow path guide section 100 is connected to the housing body section 90 located in front of the filter section 70. The through hole 102 is formed in a manner that extends through in the front-rear direction. Such a through hole 102 forms a channel for air passing through the filter section 70 to move in the direction toward the fan module section 140. That is, a plurality of through holes 102 are provided on the front side of the filter housing 80, and each through hole 102 is formed through in the front side of the filter housing 80 in the front-rear direction.

[0229] Such through holes 102 can also be formed in the form of hexagons. Furthermore, a plurality of through holes 102 are arranged in a honeycomb shape, thereby forming a honeycomb structure on the front side of the filter housing 80.

[0230] By forming a honeycomb structure on the front side of the filter housing 80 as described above, it is possible not only to ensure the passage for airflow, but also to achieve goals such as ensuring the rigidity of the filter housing 80 and its lightweight.

[0231] The fixing support portion 110 can be located at the middle of the width direction W of the flow path guide portion 100. Furthermore, the fixing support portion 110 extends in the vertical direction and can be implemented in various variations within the technical concept of having a protrusion supporting the sterilization portion 210. In one embodiment of the present invention, the fixing support portion 110 may include a filter frame 112 and a fixing protrusion 116.

[0232] The filter frame 112 forms an inner hole 114 extending in the vertical direction, and its two sides in the width direction W are connected to the flow path guide portion 100. The filter frame 112 is connected to the outer casing body portion 90 on both sides in the vertical direction H, and forms a frame with a four-sided border shape extending in the vertical direction. The shape of the inner hole 114 corresponds to the shape of the sterilization part 210. As a result, it is easy to set the sterilization part 210 to a state where it is inserted into the inner hole 114.

[0233] The fixing protrusions 116 are a plurality of protrusions protruding from the filter frame 112 toward the inner hole 114. Various modifications can be made within the technical concept of the fixing protrusions 116 constraining the movement of the sterilization part 210 disposed in the inner hole 114. In one embodiment of the present invention, the fixing protrusions 116 are located between the sterilization part 210 disposed on the inner hole 114 and the filter part 70, and prevent the sterilization part 210 from tilting toward the filter part 70.

[0234] Since the flow path guide 100 is provided on both sides of the fixed support 110 and extends in the vertical direction and has a plurality of through holes 102, the air passing through the filter housing 80 can move toward the fan module 140.

[0235] Various modifications can be made within the technical concept of the locking protrusion 120 protruding inward toward the outer casing 90 and constraining the movement of the filter section 70. In one embodiment of the present invention, the locking protrusion 120 is a strip-shaped protrusion protruding inward toward the outer casing 90, and its installation position is set with consideration of the irradiation angle of the sterilization section 210. Since the locking protrusion 120 is arranged in a strip shape along the inner periphery of the outer casing 90, the filter section 70, which is locked by the locking protrusion 120, is separated from the sterilization section 210 by a set distance. As a result, the sterilization light from the sterilization section 210 irradiates the entire side of the filter section 70 it faces, thereby improving the sterilization effect of the filter section 70.

[0236] The first fixing protrusion 130 protrudes upward toward the outer casing body 90 and can be fixed to the first protrusion 42 provided inside the casing 10. The second fixing protrusion 132 protrudes downward toward the outer casing body 90 and can be fixed to the second protrusion 44 provided inside the casing 10. When the first fixing protrusion 130 and the first protrusion 42 face each other, the movement of the first fixing protrusion 130 can be restrained by tightening bolts. Similarly, when the second fixing protrusion 132 and the second protrusion 44 face each other, the movement of the second fixing protrusion 132 can be restrained by tightening bolts.

[0237] Furthermore, since the first connecting protrusion 134, which protrudes from the housing body portion 90 toward the fan module portion 140, is inserted into the fan module portion 140, the connection between the filter housing 80 and the fan module portion 140 can be easily achieved. If necessary, the filter housing 80 and the fan module portion 140 can also be composed of a single module. Such a first connecting protrusion 134 is in the shape of a circular tube and extends along the length direction E in front of the housing body portion 90.

[0238] Figure 16 This diagram shows a state in which the sterilization unit 210 of an embodiment of the present invention is disposed in the center of the fan module unit 140. Figure 17 This is a perspective view showing the state in which the fan housing 150 is separated from the fan module section 140 according to an embodiment of the present invention.

[0239] like Figure 12 , Figure 16 and Figure 17 As shown, the fan module 140 is disposed inside the housing 10 facing the exhaust 36, and various modifications can be made within the technical concept of drawing air from the rear of the portable air purifier 1 and expelling air from the front.

[0240] The fan module 140 is housed in the receiving space 22 of the housing 10 and can be configured in the first region A. In the fan module 140, the two fan housings 150 and the fan member 160 can be configured as a module and arranged in the vertical direction.

[0241] The fan module 140 can be disposed between the discharge section 36 and the filter housing 80, and more specifically, between the discharge section 36 and the sterilization section 210. Therefore, the fan module 140 functions to blow air and, together with the filter housing 80, to constrain the movement of the sterilization section 210.

[0242] The width W of the fan module 140 is longer than the width W of the discharge portion. Therefore, with the fan module 140 fixed inside the first outer casing 20 located on both sides of the discharge portion in the width W direction, air discharged forward from the fan module moves along the inner curved surface of the first outer casing 20 located between the fan module 140 and the discharge portion, and is then discharged forward through the discharge portion towards the portable air purifier 1. That is, since the inner curved surface of the first outer casing 20 located between the fan module 140 and the discharge portion acts as an air guide to direct the movement of air toward the exhaust portion 36, the straight-line airflow function is improved.

[0243] Since the front two side corners of the fan module 140 are inserted into the first mounting groove 56 and the second mounting groove 40 provided inside the housing 10 and their movement is constrained, the shape of the first housing 20 does not need to be increased due to fixing or fastening the fan module 140, thereby enabling product miniaturization. Furthermore, when the portable air purifier 1 of the present invention is used in a vehicle, the size of the portable air purifier 1 that can be inserted into the cup support can be achieved.

[0244] The fan component 160 of the present invention is rotated by a motor. Only the shaft of the motor rotating the fan component 160 can be connected to the fan component 160. Alternatively, a rotor can be provided in the fan component 160, and a stator can be provided in the fan housing 150, which is constrained by rotation. Due to the change in the magnetic field of the stator, a shaft connected to the fan component 160 rotates together with the rotor, thereby allowing the rotor and the fan component 160 to rotate around the stator. Since the structural elements of the motor of the rotating fan component 160 are known structural elements, a detailed description thereof will be omitted.

[0245] In one embodiment of the present invention, the fan module 140 may include a fan housing 150, a fan component 160, and a fan base 200.

[0246] Figure 18 This is a perspective view showing a fan housing 150 according to an embodiment of the present invention. Figure 19This is a perspective view showing the inner side of a fan housing 150 according to an embodiment of the present invention.

[0247] like Figures 17 to 19 As shown, the fan housing 150 is fixed to the inside of the housing portion 10, and various modifications can be implemented within the technical concept of having a space for rotating the fan component 160 inside.

[0248] Furthermore, the fan housing 150 can be attached to the fan base 200 in a manner that surrounds the fan component 160. Moreover, since the fan housing 150, the fan component 160, and the fan base 200 can be configured as modules, product assembly and maintenance operations can be easily achieved.

[0249] A fan housing 150 according to an embodiment of the present invention may include at least one of a support plate 151, a connecting bracket 152, a wire guide 153, a side support 154, a wire fixing protrusion 155, a protruding post 156, a side wing 157, and a center guide 158.

[0250] The support plate 151 is plate-shaped and positioned facing the fan component 160, with a hole in its center. A motor can be mounted in the center of the support plate 151, or a shaft connected to the motor can be mounted along a first direction. This support plate 151 is located behind the discharge section 36.

[0251] The connecting bracket 152 extends outward from the support plate 151 and connects to the side support portion 154. In one embodiment of the present invention, a plurality of connecting brackets 152 may be provided, arranged in a rod-like manner. The connecting bracket 152 extending radially outward from the support plate 151 connects to the side support portion 154, which has a frame shape.

[0252] A wire guide 153 is connected to the connecting bracket 152 and supports the wires arranged along the side of the connecting bracket 152. The wire guide 153 is a protrusion located behind the side of the connecting bracket 152 and guides the motor wires provided on the support plate 151 to extend outwards towards the fan housing 150. The wire guide 153 can be provided on the side of the connecting bracket 152 and form a recessed groove for arranging the wires. Therefore, since the wires arranged on the wire guide 153 are positioned in the recessed groove on the side of the connecting bracket 152 and are supported behind them, damage to the wires can be prevented.

[0253] The side support portion 154 can be varied and implemented within the technical concept of forming a circular or quadrilateral frame around the periphery of the support plate 151. In one embodiment of the present invention, the side support portion 154 is a frame shape with a quadrilateral border, and the two sides in the first direction are open. The outer side of the side support portion 154 contacts the inner side of the first outer shell portion 20, and the inner side of the side support portion 154 is connected to the connecting bracket 152.

[0254] The protruding post 156 extends rearward toward the fan base 200 of the side support portion 154 and is provided with a groove for insertion of the engaging protrusion 204 of the fan base 200 (described later). Various modifications can be made within this technical concept. In one embodiment of the invention, a plurality of protruding posts 156 are provided along the periphery of the side support portion 154.

[0255] The wire fixing protrusion 155 protrudes from the side support portion 154, and various modifications can be made within the technical concept of setting it laterally on the wire located outside the connecting bracket 152 and constraining the wire from detachment. In one embodiment of the present invention, the wire fixing protrusion 155 is located in front of the wire that is guided along the connecting bracket 152 toward the corner of the fan housing 150, and constrains the wire to protrude forward toward the fan housing 150, thereby preventing damage to the wire.

[0256] Side wings 157 are connected to both sides of the side support portion 154 in the width direction W and are in the shape of a plate extending along the first direction. Side wings 157 extend in the vertical direction H and extend to the rear of the side support portion 154. Furthermore, side wings 157 serve as air guides to direct the air moved by the fan member 160 toward the exhaust portion 36, and also serve to prevent the high-speed rotating fan member 160 from colliding with other objects.

[0257] The center guide 158 is in the shape of a circular tube and is fixed to the support plate 151. The hollow portion formed on the inner side of the center guide 158 extends along the first direction. Since a shaft connected to the fan component 160 is arranged on the inner side of the center guide 158, it serves to guide the shaft to rotate stably.

[0258] Figure 20 This is a perspective view showing the shroud 190 of a fan component 160 according to an embodiment of the present invention. Figure 21 This is a perspective view showing the shaft connection portion 172 of the fan component 160 according to an embodiment of the present invention. Figure 22 This is a front view of a fan component 160 according to an embodiment of the present invention. Figure 23 This is a diagram showing the hub 170 of a fan component 160 according to an embodiment of the present invention. Figure 24 This is a cross-sectional view of a fan component 160 according to an embodiment of the present invention.

[0259] like Figures 20 to 24 As shown, the fan component 160 is rotatably disposed inside the fan housing 150, and various modifications can be implemented within the technical concept of enabling air to move in the direction of the exhaust portion 36.

[0260] A diagonal-flow fan can be used as the fan component 160, but this is only one embodiment of the present invention. Other types of fans can also be used as the fan component 160 of the present invention. The fan component 160 of one embodiment of the present invention may include at least one of a hub 170, a fan blade 180, and a shroud 190.

[0261] The hub 170 is located at the center of the fan housing 150 and can be implemented in various ways within the technical concept of rotating by receiving external power.

[0262] The hub 170 is disposed at the radial center of the fan component 160 and can rotate together with the rotor constituting the motor and the shaft that serves as the output shaft of the motor. In one embodiment of the present invention, the hub 170 may include at least one of a hub plate portion 171, a shaft connection portion 172, an inner protrusion portion 175, and a skirt portion 177.

[0263] The hub plate portion 171 can be formed in a disk shape parallel to the support plate 151. A shaft coupling portion 172 can be provided in the hub plate portion 171. The shaft coupling portion 172 can be disposed at the radial center of the hub plate portion 171. Such a shaft coupling portion 172 can be formed by protruding from the hub plate portion 171 along a first direction.

[0264] The shaft coupling portion 172 can be coupled to the end of a shaft that transmits rotational power. For example, the coupling portion 172 and the shaft can be coupled in a configuration where the shaft is clamped and fixed in place by the shaft coupling portion 172.

[0265] A first reinforcing protrusion 173 is provided at predetermined intervals along the outer periphery of the shaft joint 172. The first reinforcing protrusion 173 is arranged radially with the shaft joint 172 as the center, forming a band-shaped protrusion on the outer side of the shaft joint 172. As a result, the stress concentrated on the shaft joint 172 is dispersed through the first reinforcing protrusion 173, thereby strengthening the structural rigidity of the shaft joint 172.

[0266] The inner protrusion 175 can protrude from the hub plate portion 171 toward the direction where the support plate 151 is provided. In one embodiment of the present invention, the inner protrusion 175 is provided in an arc direction along the outer edge of the hub plate portion 171. The inner protrusion 175 has a tubular shape extending along a first direction.

[0267] Furthermore, second reinforcing protrusions 176 are provided at predetermined intervals along the inner periphery of the inner protrusion 175. These second reinforcing protrusions 176 are arranged along the inner surface of the inner protrusion 175 in a first direction, forming a band-shaped protrusion extending toward the shaft connection portion 172. As a result, the stress concentrated on the inner protrusion 175 is dispersed through the second reinforcing protrusions 176, thereby strengthening the structural rigidity of the inner protrusion 175. If necessary, the rotor of the motor portion can be fixed inside the inner side of the inner protrusion 175.

[0268] The skirt 177 can protrude from the edge of the hub plate portion 171 toward the support plate 151. The skirt 177 can be formed as an inclined surface that slopes radially outward as it moves away from the hub plate portion 171 in a first direction. The skirt 177 is located outside the inner protrusion 175, and its inner diameter increases as it moves toward the front of the hub plate portion 171.

[0269] For example, the shape in which the hub portion 171 and the skirt portion 177 are connected can be a truncated cone shape with a hollow portion formed inside and one side open. The skirt portion 177 can be a funnel shape with an opening at the front and blocked at the rear by the hub portion 171.

[0270] The shield 190 is connected to the end of the fan blade 180 and is arranged in a ring shape. It can be implemented in various ways within the technical concept of being able to be separated from the fan base 200.

[0271] The shield 190 is provided along the outer periphery of the skirt 177, and the shield 190 and the skirt 177 are connected by the fan blade 180. Furthermore, the outer diameter of the hub 170 and the inner diameter of the shield 190 can gradually decrease from the discharge section 36 toward the inlet section 32.

[0272] The shroud 190 is radially spaced from the hub 170 along the fan module portion 140 at a predetermined interval, and can be disposed radially outside the hub 170. Furthermore, the shroud 190 can be spaced from the hub 170 at intervals corresponding to the radial length of the fan blades 180. Additionally, each fan blade 180 can connect the skirt 177 provided on the hub 170 and the shroud 190.

[0273] The shield 190 can be formed with an inclined surface that is substantially parallel to the skirt 177. This embodiment illustrates an arrangement in which the distance between the skirt 177 and the shield 190 increases towards the front of the shield 190. In this invention, "front" refers to the direction from the center of the housing portion 10 towards the discharge portion 36, and "rear" refers to the direction from the center of the housing portion 10 towards the inlet portion 32.

[0274] The inlet protrusion 191 provided at the rear of the shield 190 is an annular protrusion that extends from the funnel-shaped shield 190 along a first direction. Since the inlet protrusion 191 is located inside the flared opening 202 described later, it can prevent the return air movement of air flowing in along the outside of the shield 190 to the inlet provided on the shield 190.

[0275] A plurality of fan blades 180 are provided and can be arranged at equal intervals along the outer peripheral surface of the hub 170. The fan blades 180 protrude outward from the hub 170 with the hub 170 as the center, and the fan blades 180 extend in a spiral manner. Furthermore, the plurality of fan blades 180 can be arranged at predetermined intervals along the peripheral direction of the hub 170.

[0276] In one embodiment of the present invention, the fan blade 180 can protrude from the center of the shaft connection portion 172 outward along a spirally extending centrifugal direction toward the skirt portion 177. Furthermore, when the direction from the outside of the shaft connection portion 172 toward the shaft connection portion 172 is referred to as radial, the radially inner side of the fan blade 180 can be connected to the skirt portion 177, and the radially outer side of the fan blade 180 can be connected to the shield 190 described later.

[0277] The skirt 177 is the part of the hub 170 that is directly connected to the fan blade 180, and it is also in direct contact with the air passing through the fan blade 180. Such a skirt 177 can also be largely related to the airflow path through the fan module section 140.

[0278] The individual fan blades 180 connecting the shield 190 and the skirt 177 may include a first end 181, a second end 182, a first edge 183, and a second edge 184.

[0279] The first end portion 181 is disposed at the front end of the fan blade 180 in the direction of rotation and can be formed into a straight line extending radially. The direction of rotation can be defined as the direction in which the fan component 160 rotates.

[0280] The second end portion 182 is located at the rear end of the fan blade 180 in the direction of rotation and can be formed radially with the shaft connection portion 172 as the center.

[0281] The first edge 183 can connect one end of the first end 181 and one end of the second end 182. Such a first edge 183 can be connected to the inner peripheral surface of the cover 190.

[0282] The second edge 184 can connect the other end of the first end 181 and the other end of the second end 182. Such a second edge 184 can be attached to the outer peripheral surface of the hub 170.

[0283] That is, one end of the first end 181 and one end of the second end 182 can be connected to the inner peripheral surface of the cover 190. In addition, the other end of the first end 181 and the other end of the second end 182 can be connected to the outer peripheral surface of the skirt 177.

[0284] One end of the first end portion 181 can be positioned closer to the radial center of the hub portion 171 than one end of the second end portion 182. Furthermore, the other end of the second end portion 182 can be positioned closer to the radial center of the hub portion 171 than the other end of the first end portion 181. This is because one and the other ends of the first end portion 181 are positioned forward in the rotational direction compared to one and the other ends of the second end portion 182, and the skirt portion 177 is formed such that its radius narrows towards the front in the rotational direction.

[0285] According to this embodiment, the fan blade 180 is connected to the skirt 177 in the hub 170. In order to guide the flow of air into the fan module 140 in an upwardly inclined direction, the skirt 177 forms an inclined surface in an upwardly inclined direction.

[0286] Figure 25 This is a perspective view showing the fan base 200 separated from the filter housing 80 according to an embodiment of the present invention. Figure 26 This is a perspective view showing a fan base 200 according to an embodiment of the present invention. Figure 27 This diagram shows a state in which the sterilization section 210 of an embodiment of the present invention is set apart from the filter section 70.

[0287] like Figures 25 to 27 As shown, the fan base 200 is attached to the rear of the fan housing 150, and various modifications can be made within the technical concept of guiding air through the filter section 70 into the fan component 160.

[0288] The fan base 200 can be disposed between the filter section 70 and the fan member 160. The front of the fan base 200 is connected to the fan housing 150, and the rear of the fan base 200 is connected to the filter housing 80. Furthermore, the fan base 200 can support the front of the sterilization section 210, and the filter housing 80 supports the rear of the sterilization section 210. In addition, the fan base 200 has a passage for air to be drawn into the fan member 160, and the number of air passages described above can be the same as the number of fan members 160.

[0289] The fan base 200 is generally plate-shaped and can be shaped to correspond to the shape of the fan housing 150. For example, if the fan housing 150 is quadrilateral and is arranged continuously along the vertical direction, the fan base 200 coupled to the fan housing 150 can also be formed as a rectangular plate extending along the vertical direction. In one embodiment of the present invention, the fan base 200 may include at least one of a base plate 201, a flared opening 202, a connecting protrusion 204, and a protruding rib 203.

[0290] The base plate 201 can be disposed between the filter housing 80 and the fan component 160. Such a base plate 201 is a rectangular plate extending in the vertical direction H, with a hollow portion for air movement provided in its center. A plurality of hollow portions are provided and arranged in the vertical direction H.

[0291] The flared opening 202 is arranged in a ring shape on the inner side of the base plate 201 facing the hollow part. The flared opening 202 has a longitudinal section with a recessed shape that surrounds the end of the inlet protrusion 191 of the cover 190 and extends in the circumferential direction.

[0292] The flared opening 202 can be formed as the outer peripheral surface surrounding the hollow portion formed in the center of the base plate 201. The flared opening 202 is formed to protrude rearward and can also be formed as a groove that is recessed forward.

[0293] At least a portion of the flare 202 can be inserted radially inward into the shroud 190. This flare 202 guides the intake flow at the inlet of the fan module 140, thereby helping to improve the intake and exhaust performance of the fan module 140. Furthermore, since the flare 202 has a convex curved surface at its rear, the increase in frictional resistance of the air moving forward through the flare 202 can be reduced, thereby allowing for smoother airflow.

[0294] Furthermore, the protrusion 204 protrudes forward from the base plate 201 along a first direction and engages with the groove of the protruding post 156 provided on the fan housing 150 in a clamping manner, thereby fixing the fan base 200 to the fan housing 150. The engagement between the protrusion 204 and the protruding post 156 allows for engagement between the fan base 200 and the fan housing 150 at multiple locations. When the engagement between the fan base 200 and the filter housing is achieved as described above, the fan component 160 can be rotatably disposed between the fan base 200 and the fan housing 150.

[0295] The protruding rib 203 is provided in a ring-shaped manner surrounding the outer periphery of the flared opening 202, and can be provided parallel to the outer side of the fan member 160. Furthermore, the protruding rib 203 protrudes from the base plate 201 and can be disposed radially outward of the flared opening 202.

[0296] Furthermore, the protruding rib 203 can be integrally formed with the base plate 201. More specifically, the base plate 201, the flared opening 202, and the protruding rib 203 can be integrally formed.

[0297] Furthermore, the protruding rib 203 can be inclined at the same angle as the outer surface of the cover 190, and the gap between the protruding rib 203 and the cover 190 can be kept constant. Such a protruding rib 203 can protrude in the form of an inclined surface. The inclined surface of the protruding rib 203 is spaced apart from the cover 190 by a set interval, and can be formed as an inclined surface parallel to the inclined surface of the cover 190.

[0298] Furthermore, the inclined surface of the protruding rib 203 can have the same inclination angle as the inclined surface of the inner guide portion provided on the fan housing 150. Therefore, it is possible to prevent a portion of the air that has moved forward through the space between the shroud 190 and the skirt 177 from moving back towards the inlet of the fan component 160 through the space between the shroud 190 and the protruding rib 203. This provides the effect of suppressing flow loss caused by backflow and increasing the rigidity of the fan base 200 to suppress deformation of the fan base 200 caused by external forces.

[0299] Additionally, a ring-shaped engagement guide protrusion 205 may be provided behind the base plate 201 facing the protruding rib 203. After the first engagement protrusion 134 protruding towards the front of the filter housing 80 moves inward toward the engagement guide protrusion 205, it is inserted behind the engagement protrusion 204 and fixed by clamping.

[0300] If the first engagement protrusion 134 of the filter housing 80 is moved toward the inside of the engagement protrusion 204 of the fan base 200 and engaged without engaging the guide protrusion 205, the engagement force is reduced due to the reduced contact area between the first engagement protrusion 134 and the fan base 200, which may cause the filter housing 80 and the fan base 200 to separate.

[0301] To address this issue and achieve a compact design by suppressing the increase in the length E of the fan base 200 in the longitudinal direction, an additional engagement guide protrusion 205 is provided. When the first engagement protrusion 134 engages with the fan base 200, the contact area between the first engagement protrusion 134 and the fan base 200 is increased because the inner sides of the engagement guide protrusion 205 and the engagement protrusion 204 contact the outer side of the first engagement protrusion 134, thereby increasing the engagement force.

[0302] Figure 28 This is a diagram showing the state in which sterilizing light is irradiated from the sterilization section 210 toward the filter section 70 according to an embodiment of the present invention.

[0303] like Figure 28 As shown, the sterilization unit 210 is installed on the filter housing 80, and various modifications can be made within the technical concept of irradiating sterilization light toward the filter unit 70.

[0304] In one embodiment of the present invention, the sterilization part 210 is inserted into the inner side of the filter frame 112 and can be locked by the fixing protrusion 116, thus restricting its movement. Within the technical concept of preventing air pollution by using the sterilization filter part 70, the installation position of the sterilization part 210 can be varied in many ways while minimizing the increase in airflow resistance.

[0305] like Figure 15 As shown, the sterilization section 210 is located at the center of the width direction W of the filter housing 80 and can extend along the vertical direction.

[0306] And, as Figure 16 As shown, the sterilization section 210 can be located at the center of the width direction W of the fan module section 140. That is, since the front of the sterilization section 210 is located at the center of the width direction W of the fan module section 140, and the rear of the sterilization section 210 is located at the center of the width direction W of the filter housing 80, the position of the sterilization section 210 is the optimal position selected to minimize the friction between it and the air moving from the filter housing 80 to the fan module section 140, taking into account the irradiation distance and irradiation angle of the sterilization light.

[0307] In one embodiment of the present invention, two fan members 160 may be arranged along the vertical direction of the sterilization section 210. The upper end of the sterilization section 210 is positioned lower than the upper end of the hub 170 of the fan member 160 located above the sterilization section 210. As a result, since the air intake flow path provided above the hub 170 of the fan member 160 located above the sterilization section 210 does not interfere with each other, the increase in frictional resistance of the air flow path can be minimized.

[0308] Furthermore, the lower end of the sterilization section 210 is positioned higher than the lower end of the hub 170 of the fan component 160 located below the sterilization section 210. As a result, since the air intake flow path provided below the hub 170 of the fan component 160 located below the sterilization section 210 does not interfere with the air intake flow path, the increase in frictional resistance of the air flow path can be minimized.

[0309] With a plurality of fan components 160 arranged sequentially along the vertical direction, the upper and lower ends of the sterilization section 210 extending along the vertical direction do not protrude outward from the hub 170 of the fan component 160, thus minimizing the obstruction of the airflow path drawn into the fan component 160 by the sterilization section 210. This minimizes the increase in airflow resistance drawn into the fan component 160, thereby improving air purification performance.

[0310] In one embodiment of the present invention, the sterilization unit 210 may include a printed circuit board 211 and a sterilization light source 212. The printed circuit board 211 is a rectangular plate extending in the vertical direction, with its front supported by the flared opening 202 of the fan base 200 and its rear supported by the fixing protrusion 116 of the filter housing 80.

[0311] The sterilization light source 212 can be a UVC LED, or various other sterilization devices can be used within the technical concept of eliminating bacteria present in the filter section 70. The sterilization light source 212 is disposed on both sides of the printed circuit board 211 in the vertical direction and irradiates sterilization light towards the filter section 70.

[0312] The mounting position and number of the sterilization light source 212 can be varied by considering the vertical length H of the filter section 70 of the present invention. The irradiation angle of the sterilization light in the sterilization light source 212 of the present invention is 140 degrees to 160 degrees. Therefore, since the sterilization light irradiated by the sterilization light source 212 provided on the upper and lower sides of the printed circuit board 211 reaches the filter section 70 and a portion of the sterilization light is superimposed, sterilization treatment can be performed on the entire side located in front of the filter section 70.

[0313] like Figure 12 and Figure 27 As shown, in one embodiment of the present invention, two fan housings 150 and fan components 160 are arranged in succession along the vertical direction of the fan base 200, and the rotation center axis of the fan component 160 can intersect the sterilization part 210 at a right angle.

[0314] A virtual line passing through the rotation center of the upper fan component 160 and extending along the first direction is set as the first horizontal center line P1, and a virtual line passing through the rotation center of the lower fan component 160 and extending along the first direction is set as the second horizontal center line P2.

[0315] When the virtual line intersecting the first horizontal center line P1 and the second horizontal center line P2 along the vertical direction is called the vertical virtual line V, the sterilization unit 210 is arranged parallel to the vertical virtual line V. If the sterilization unit 210 is arranged at an angle to the vertical virtual line V, the contact area with the air moving through the filter unit 70 and towards the fan module unit 140 will increase, and the frictional resistance generated when the air moves will increase, thereby reducing the air cleaning performance.

[0316] However, when the sterilization section 210 is arranged parallel to the vertical virtual line V, its contact area with the air moving through the filter section 70 and toward the fan module section 140 is minimized, thereby minimizing the increase in frictional resistance generated when the air moves and preventing a decrease in air cleaning performance.

[0317] Figure 29 This diagram shows a state in which a locking protrusion 117 is provided on the front side of the sterilization section 210 according to an embodiment of the present invention. Figure 29 As shown, an additional locking protrusion 117 may be provided in front of the sterilization section 210. When the sterilization section 210 is inserted into the inside of the filter frame 112 provided on the filter housing 80, a fixing protrusion 116 and a locking protrusion 117 protrude from the filter frame 112.

[0318] The fixing protrusion 116 is located behind the sterilization section 210, and the locking protrusion 117 is located in front of the sterilization section 210. The fixing protrusion 116 is located on the upper and lower sides of the sterilization section 210, and the locking protrusion 117 is located in the center of the sterilization section 210. Both are made of plastic and are capable of some degree of shape deformation. Therefore, when the sterilization section 210 is installed, the shapes of the fixing protrusion 116 and the locking protrusion 117 are deformed. Furthermore, after the sterilization section 210 is installed, the shapes of the fixing protrusion 116 and the locking protrusion 117 are restored to their original state.

[0319] Airflow patterns of portable air purifiers

[0320] like Figure 11 and Figure 28 As shown, since the air flowing into the inlet 32 ​​is guided to move in a horizontal direction, after passing through the filter section 70, the filter housing 80, and the fan module section 140 in sequence, it is discharged to the outside of the housing section 10 through the discharge section 36, which can shorten the air movement path and improve the air purification performance.

[0321] Furthermore, since the sterilization section 210 is fixed in a shape that is inserted into the inside of the filter housing 80, the sterilization section 210 can be easily cooled by the air moving through the filter housing 80 to the fan module section 140, thereby improving the durability of the sterilization section 210.

[0322] Furthermore, since the area of ​​air flowing into the inside of the housing 10 through the inlet 32 ​​is larger than the area of ​​the filter section 70 facing the inlet 32, even when the fan module 140 is operating at low speed, a large amount of air can move through the filter section 70 to the fan module 140, thereby improving air cleaning efficiency.

[0323] Furthermore, since the filter housing 80 is provided in such a way as to surround the outer frame of the filter section 70, the air passing through the filter section 70 is prevented from moving in the first direction toward the inlet 32, but instead moves in the vertical direction H of the filter section 70 through the frame of the filter section 70, thereby ensuring the straight-line movement of the air.

[0324] Furthermore, the sterilization section 210 is located at the center of the filter housing 80 and the fan module section 140 in the width direction W. Since the upper and lower ends of the sterilization section 210 do not protrude outward from the hub 170 provided on the upper and lower sides of the sterilization section 210, the increase in flow resistance caused by the sterilization section 210 is minimized. As a result, not only is the airflow loss minimized, but also the effective intake and exhaust of air and filtration are achieved.

[0325] In addition, air passes through the filter section 70, and in the process, physical particles such as dust / micro-dust / ultra-micro-dust, chemical substances such as odor particles / harmful gases, and microorganisms such as bacteria / viruses contained in the air are filtered out.

[0326] Furthermore, since the center of the inlet section 32 in the width direction W, the center of the filter section 70 in the width direction W, the center of the filter housing 80 in the width direction W, the center of the sterilization section 210 in the width direction W, the center of the fan module section 140 in the width direction W, and the center of the outlet section 36 in the width direction W are arranged in a straight line along the second horizontal center line P2, not only can flow loss be minimized, but also effective air intake and filtration can be achieved.

[0327] The purified air that has passed through the filter section 70 can flow into the interior of the fan module section 140. The airflow can be guided by the flare 202, thereby effectively inducing a smooth flow of air into the fan module section 140.

[0328] Air flowing into the fan module 140 is expelled towards the front of the fan module 140. The air expelled towards the front of the fan module 140 can be expelled in a diagonal direction. This diagonal direction can be defined as the forward diagonal direction.

[0329] Air drawn into the rear center of the fan module 140 moves forward through an annular discharge port formed along the inner side of the fan module 140's frame, and also moves forward through the space formed between the support members of the rotating support. In other words, because a diagonal-flow fan is used in the fan module 140, the air flowing into the rear of the fan module 140 is discharged in a forward-tilted direction, aligning the air movement channel and flow path of the rotating support, thereby reducing flow path losses.

[0330] Furthermore, the air expelled to the front of the fan module 140 moves along the inner curved surface of the first outer casing 20 located between the two corners of the fan module 140 in the width direction W and the two corners of the exhaust portion 36 in the width direction W, and is guided to move straight in the first direction, and is expelled to the front of the casing 10 through the exhaust portion. Since the inner side of the first outer casing 20 is configured as a curved surface, the inner diameter of the first outer casing 20 in the width direction W decreases as it approaches the exhaust portion 36. The first outer casing 20 acts as an air guide, allowing the air exiting the fan module 140 to move towards the exhaust portion 36. At this time, since the inner side of the first outer casing 20 forms a concave curved surface, the friction between it and the air moving from the fan module 140 towards the exhaust portion 36 is minimized, thereby improving the airflow performance and maintaining the straightness of the forward-moving air.

[0331] In addition, since the inlet grille 33 provided on the inlet portion 32 and the outlet grille 37 provided on the outlet portion 36 extend along the first direction, the air passing through the inlet grille 33 and the air discharged through the outlet grille 37 can move in a straight line along the first direction, thereby shortening the movement path of the air passing through the housing portion 10 and improving the air delivery capacity.

[0332] [Arrangement of components and spacing between components]

[0333] like Figure 11 As shown, a first horizontal center line passing laterally through the center of the housing portion 10 is located between the inlet portion 32 and the outlet portion 36. The first horizontal center line is a virtual line passing through the portion with the largest inner diameter in the cross-section of the first housing portion 20. Furthermore, a second horizontal center line is perpendicular to the first horizontal center line and extends along the first direction.

[0334] The portable air purifier 1 is characterized by having a generally cylindrical shape that extends vertically, and having devices for air purification and sterilization arranged within a predetermined size for installation on a vehicle's cup holder. Therefore, the arrangement of the components is one of the key technical concepts of this invention.

[0335] Since the arrangement of the fan module 140 and the filter 70 is an important technology for the portable air purifier 1, the filter 70 is arranged on the inlet 32 ​​side and the fan module 140 is arranged on the outlet 36 side, with the first horizontal centerline as a reference. As a result, since the air that has passed through the filter 70 and removed impurities will pass through the fan module 140, the phenomenon of dust and other impurities being trapped in the fan module 140 is reduced, and the cost and time required for maintenance and repair can be saved.

[0336] Furthermore, the sterilization unit 210, which uses sterilization light to disinfect the filter unit 70, needs to be separated from the filter unit 70 by a predetermined distance due to the irradiation angle of the sterilization light and the number and position of the sterilization light sources 212. Therefore, the sterilization unit 210 is located in the direction toward the fan module unit 140 with the first horizontal center line as a reference. When the installation space of the fan module unit 140 is reduced, the air supply function will be significantly reduced. Therefore, it is not easy to reduce the installation space of the fan module unit 140. However, for the filter unit 70, if a high-performance filter is used, the installation space can also be reduced.

[0337] Therefore, when the distance between the first horizontal centerline P1 and the filter section 70 is referred to as D1, and the distance between the first horizontal centerline P1 and the fan module section 140 is referred to as D2, D1 and D2 have different values. Furthermore, it is preferable that D1 has a larger value than D2.

[0338] For example, when D1 and D2 are the same or D2 is greater than D1, the installation space of the fan module 140 is reduced compared to the past, which significantly reduces the air supply function and thus reduces the air cleaning efficiency.

[0339] On the other hand, when D1 has a value greater than D2, sufficient installation space for the fan module 140 is ensured, preventing a reduction in airflow capacity. This allows for not only sterilization of the filter 70 but also prevention of reduced air purification efficiency. Specifically, since the airflow capacity of the fan module 140 is crucial for air purification, it is positioned closer to the first horizontal centerline P1 than the filter 70. Consequently, the volume of the fan module 140 is larger than that of the filter 70.

[0340] Furthermore, the center of the housing portion 10 intersects the first horizontal centerline at a right angle, and the second horizontal centerline extending laterally passes through the center of the inlet portion 32, filter portion 70, sterilization portion 210, fan module portion 140, and exhaust portion 36 in the width direction W. This further improves the straightness of the air passing sequentially through the inlet portion 32, filter portion 70, sterilization portion 210, fan module portion 140, and exhaust portion 36, thereby improving air delivery function and air cleaning efficiency.

[0341] In addition, since the sterilization part 210 is fixed in the state of being inserted into the inside of the filter housing 80, the reduction in the first direction length of the fan module part 140 or the filter part 70 caused by the installation of the sterilization part 210 can be minimized, thereby preventing the air supply function from being reduced compared to the past.

[0342] Furthermore, the rear of the sterilization unit 210 is supported by a fixing protrusion 116, and the front of the sterilization unit 210 is supported by the flare 202 of the fan base 200, or together with the flare 202, by a locking protrusion 117. Therefore, there is no need to equip an additional bracket for fixing the sterilization unit 210, and since the length of other components in the first direction is not reduced due to the additional bracket, excellent air purification function can be provided, and production and maintenance costs can be saved due to the reduction in the number of components.

[0343] Although the invention has been described above with reference to the illustrated drawings, it is not limited to the embodiments and drawings disclosed in this specification. It is obvious that various modifications can be made by those skilled in the art within the scope of the invention's technical concept. Furthermore, even if the effects corresponding to the structural elements of the invention are not explicitly described in the foregoing description of the embodiments, the effects predictable from the corresponding structural elements should be considered.

Claims

1. A portable air purifier, in, include: The housing has an internal accommodating space and includes an air intake and an air exhaust section. A filter section is disposed on the inner side of the housing section facing the inlet section; The fan module is disposed on the inner side of the housing portion facing the exhaust portion; A filter housing, wherein the filter section is detachably disposed within the filter housing, located between the filter section and the fan module section, guiding the movement of air from the filter section to the fan module section; and The sterilization unit, installed in the filter housing, irradiates the filter section with sterilization light. The filter housing includes: The outer casing body is fixed to the inner side of the casing body, and the filter part is installed on the inner side of the outer casing body; A flow path guide is provided on one side of the housing body, forming a channel for air to move from the filter section toward the fan module section; and A fixed support portion is formed in the flow path guide portion. The fixed support is located in the middle of the flow path guide and extends in the vertical direction, including an inner hole for the sterilization part to be inserted. The flow path guide is located on both sides of the fixed support. As the sterilizing part is inserted into the inner hole, the flow path guide and the sterilizing part are arranged in parallel, and the sterilizing part and the filter part are arranged facing each other. The air flowing into the inlet is guided horizontally, passes sequentially through the filter section, the filter housing, and the fan module section, and is then discharged to the outside of the housing section through the outlet section.

2. The portable air purifier according to claim 1, wherein, The housing portion includes: The first outer casing includes a filter section, a sterilization section, and a fan module section on its inner side; an inlet section on one side; and an air outlet section on the other side facing the inlet section. The second outer shell is connected to the lower part of the first outer shell.

3. The portable air purifier according to claim 2, wherein, An airflow path is formed on the inner side of the first outer casing, but no airflow path is formed on the inner side of the second outer casing.

4. The portable air purifier according to claim 2, wherein, The cross-section of at least one of the first outer shell portion and the second outer shell portion is circular or elliptical.

5. The portable air purifier according to claim 2, wherein, The first outer casing includes: The first outer casing has the inlet and the outlet, and has a maintenance space on its side; and A maintenance door is installed on the first outer shell body in a detachable manner to open and close the maintenance space.

6. The portable air purifier according to claim 5, wherein, The maintenance door includes: The door body is detachably mounted on the first outer shell body; The gap remains raised, protruding inwards from the door body and extending toward at least one of the filter section and the filter housing; and The first mounting groove is formed on the inner side of the door body along the vertical direction.

7. The portable air purifier according to claim 6, wherein, The first outer shell body also includes: The second mounting groove is formed along the vertical direction on the inner side of the first housing body facing the first mounting groove. The fan module is inserted into the first mounting slot and the second mounting slot on one side and the other side in the width direction, thereby constraining the movement of the fan module.

8. The portable air purifier according to claim 1, wherein, In the inlet section, a plurality of inlet grilles extending in the vertical direction are provided on one side of the housing section to form inlet holes. In the discharge section, a plurality of discharge grilles extending in the vertical direction are provided on the other side of the housing section to form discharge holes. The inlet and the outlet face each other in the horizontal direction.

9. The portable air purifier according to claim 1, wherein, The filter section is located inside the housing section and faces the inlet section. The filter section is positioned so that both sides in the width direction are in contact with the inner side of the housing section.

10. The portable air purifier according to claim 1, wherein, The filter section is in the shape of a cuboid extending in the vertical direction and is installed inside the filter housing to constrain the movement of the filter section.

11. The portable air purifier according to claim 1, wherein, The filter housing also includes: A locking boss protrudes inward from the inner side of the housing body to restrict the movement of the filter section. The filter section, which is held in place by the locking protrusion, is separated from the sterilization section by a set distance.

12. The portable air purifier according to claim 1, wherein, The filter housing also includes: A first fixing protrusion protrudes upward from the upper side of the outer casing body and is fixed to a first protrusion disposed on the inner side of the casing body; and The second fixing protrusion protrudes downwards from the lower side of the outer shell body and is fixed to the second protrusion provided on the inner side of the shell body.

13. The portable air purifier according to claim 1, wherein, The filter housing also includes: The first connecting protrusion protrudes toward the fan module portion and is inserted into the fan module portion.

14. The portable air purifier according to claim 1, wherein, The flow path guide extends in the vertical direction and has a plurality of through holes.

15. The portable air purifier according to claim 1, wherein, The fixed support includes: The filter frame, including the inner hole, is connected to the flow path guide; and A plurality of fixed protrusions protrude from the filter frame toward the inner hole. When the sterilization part is inserted into the inner hole, its movement is restricted by the fixing protrusion.

16. The portable air purifier according to claim 1, wherein, The sterilization section is located at the center of the filter housing in the width direction and extends in the vertical direction.

17. The portable air purifier according to claim 1, wherein, The sterilization section includes: Printed circuit board, extending vertically; and A sterilization light source is disposed on both sides of the printed circuit board in the vertical direction, and shines sterilization light toward the filter section.

18. The portable air purifier according to claim 1, wherein, Two fan components are arranged along the sterilization section in the vertical direction. The upper end of the sterilization section is positioned lower than the upper end of the hub of the fan component located above the sterilization section. The lower end of the sterilization section is positioned higher than the lower end of the hub of the fan component located below the sterilization section.

19. The portable air purifier according to claim 1, wherein, The fan module includes: Fan housing, fixed to the inner side of the housing portion; A fan component is rotatably disposed inside the fan housing, causing air to move toward the exhaust portion; and The fan base, attached to the fan housing, guides air passing through the filter section into the fan component.

20. The portable air purifier according to claim 19, wherein, Two fan housings and two fan components are provided in the vertical direction of the fan base, and the rotation center axis of the fan component intersects the sterilization part at a right angle.

21. The portable air purifier according to claim 19, wherein, The fan housing includes: The support plate is provided in a plate-shaped manner at the position facing the fan component; A connecting bracket extends outward from the support plate; Side support portion, connected to the connecting bracket, forming a circular or quadrilateral frame around the periphery of the support plate; and A protruding post protrudes from the side support portion toward the fan base and engages with the fan base.

22. The portable air purifier according to claim 19, wherein, The fan component includes: The hub, located at the center of the fan housing, receives external power and rotates. A plurality of fan blades are arranged at equal intervals along the outer peripheral surface of the hub; and A protective cover is attached to the end of the fan blade and arranged in a ring shape, separated from the fan base.

23. The portable air purifier according to claim 22, wherein, The fan base includes: The base plate is plate-shaped and has a hollow section for air movement, extending in the vertical direction; The flared opening is arranged in a ring shape on the inner side of the base plate facing the hollow portion, and has a longitudinal section with a recessed shape surrounding the lower side of the entrance protrusion of the protective cover; and The protrusion extends from the base plate and is attached to the protruding post of the fan housing.

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