Diagonal flow fan module and portable air purifier having the same

Abstract

Disclosed are inventions relating to a diagonal flow fan module and a portable air purifier having the same. The diagonal flow fan module includes a fan housing having an outer surface formed as a curved surface along a circumferential direction and an operating space formed inside the fan housing; a fan member rotatably disposed inside the fan housing; and a fan base coupled to the fan housing to guide air toward the fan member.

Description

Technical Field

[0001] The present invention relates to a diagonal flow fan module and a portable air purifier having the diagonal flow fan module. More specifically, the present invention relates to a diagonal flow fan module capable of increasing the flow performance of air moving along the vertical axis and a portable air purifier having the diagonal flow fan module. Background Art

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

[0003] Due to urbanization, industrialization, and internationalization, air purifiers have become essential equipment even in ordinary households. In addition, the demand for air purifiers is rapidly increasing due to the increase in fine dust, the increase in allergy sufferers, and the improvement of living standards.

[0004] When the air purifier is operated at a speed of more than 100m 2 For environments such as those described above, such as typical homes, the device can be larger. In such a device, filters for physical particles like dust, filters for chemical substances like gases, and filters for microorganisms like bacteria and viruses can be combined. In other words, a larger air purifier capable of accommodating a combination of various filters can be used in larger spaces.

[0005] However, using large air purifiers in confined spaces, such as single rooms and vehicle interiors, is inefficient in terms of space utilization, mobility, and energy consumption. Furthermore, for users who frequently move around, smaller, portable air purifiers are more suitable than larger ones. Against this backdrop, portable air purifiers are being developed.

[0006] Portable air purifiers are compact and lightweight, making them easy to carry. The advantage of such portable air purifiers is that they can be easily carried and used wherever needed. Specifically, compared to users who spend extended periods at home, portable air purifiers are more suitable for users who frequently travel or have a mobile lifestyle.

[0007] In the prior art (Korean Patent Publication No. 2020-0037187), air is sucked in from the back of the portable air purifier and expelled from the front. However, in the prior art portable air purifier, since the air moves in a horizontal direction, there is a problem that the purified air cannot be properly delivered to the user.

[0008] Furthermore, when using a housing that forms an air flow path in the vertical direction to deliver purified air to the user, a separate fan module cannot be provided to form an air flow path that moves from the bottom to the top along the housing, resulting in reduced air purification efficiency. Therefore, improvements are needed.

[0009] The background technology of the present invention is disclosed in Korean Patent Publication No. 2020-0037187 (publication date: April 8, 2020, invention title: portable air purifier). Summary of the Invention

[0010] An object of the present invention is to provide a diagonal flow fan module suitable for blowing air from the lower side to the upper side along a housing, and a portable air purifier having the diagonal flow fan module.

[0011] Another object of the present invention is to provide a diagonal flow fan module that allows purified air to easily reach a user located above the air purifier, and a portable air purifier having the diagonal flow fan module.

[0012] The objectives of the present invention are not limited to the objectives mentioned above. Those skilled in the art will clearly understand other objectives and advantages of the present invention that are not mentioned through the following description, and will further clearly understand through the embodiments of the present invention. In addition, it is obvious that the objectives and advantages of the present invention can be achieved by the means specified in the scope of the claims and their combinations.

[0013] The diagonal flow fan module and the portable air purifier having the same according to the present invention are characterized in that the outer periphery of the diagonal flow fan module is formed in a circular shape.

[0014] Specifically, the outer periphery of the diagonal flow fan module forms a curved surface along the circumferential direction and is arranged in contact with the inner side of the cylindrical shell part, thereby preventing a reduction in the air supply volume and enabling the air moving from the lower side to the upper side along the shell part to be blown smoothly.

[0015] Furthermore, the diagonal flow fan module and the portable air purifier having the same according to the present invention are characterized in that the air passing through the diagonal flow fan module can easily reach a user located above the air purifier.

[0016] Specifically, the air flowing into the lower portion of the housing may be discharged to the upper side of the housing through the diagonal flow fan module, thereby easily reaching a user located above the air purifier.

[0017] Furthermore, the diagonal flow fan module and the portable air purifier having the same according to the present invention are characterized in that cyclones are prevented from being generated through the inlet of the fan member.

[0018] Specifically, the passage between the fan member and the fan base is formed to be narrow, and the bell mouth provided at the fan base is set to be shaped around the lower end of the shield, thereby reducing or blocking the flow of air moving from the outside of the fan member to the inlet of the fan member.

[0019] A diagonal flow fan module according to one embodiment of the present invention may include: a fan housing, an outer surface of which is curved along a circumferential direction, and an operating space is formed on the inner side of the fan housing; a fan component is rotatably arranged on the inner side of the fan housing; and a fan base is combined with the fan housing to guide air to flow in the direction toward the fan component.

[0020] Additionally, the fan housing, the fan member, and the fan base may be combined to form a module.

[0021] In addition, the fan housing may include at least any one of a support plate, a connection support platform, a wire guide, a side support portion, an inner guide portion, and a protrusion mounting groove portion.

[0022] Additionally, the support plate is located in the center of the fan housing.

[0023] In addition, the connection support platform extends radially outward of the support plate.

[0024] In addition, the side support portion is separated from the support plate and connected to the connection support platform, forming a circular curved surface along the periphery.

[0025] In addition, the protrusion mounting groove portion is formed in a groove shape on the lower side surface of the side support portion, which is used to connect with the coupling protrusion provided on the fan base.

[0026] In addition, the inner guide portion protrudes toward the inner side of the side support portion and has a first inclined surface whose inner diameter gradually decreases toward the direction where the fan base is provided. In addition, the inner guide portion is provided on the lower side of the side support portion opposite to the fan base.

[0027] In addition, the wire guide is continuously provided on the connection support platform to support the lower portion of the wire so that the wire can move along the side surface of the connection support platform.

[0028] In addition, the fan components include a hub, blades, and a shroud.

[0029] In addition, the hub is located at the center of the fan housing and rotates by receiving external power. In addition, the hub may include at least any one of a hub plate portion, a shaft coupling portion, an inner protrusion, a skirt portion, a first reinforcement protrusion, and a second reinforcement protrusion.

[0030] Furthermore, the hub plate portion is rotatably provided inside the fan housing and is located in the radial center of the fan housing.

[0031] In addition, the shaft coupling portion is located at the center of the hub plate portion, protrudes toward at least any one direction of the upper side and the lower side of the hub plate portion, and is connected to the shaft to receive rotational power.

[0032] In addition, the first reinforcing protrusion is radially arranged with the shaft coupling portion as the center, and forms a belt-shaped protrusion on the outer side of the shaft coupling portion.

[0033] In addition, the inner protrusion is provided along the outer edge of the hub plate portion in the arc direction and extends upward.

[0034] In addition, the second reinforcement protrusion extends in the up-down direction along the inner side surface of the inner protruding portion, and the lower side thereof has a band shape that is bent toward the shaft coupling portion and connected to the hub plate portion.

[0035] In addition, the skirt portion extends obliquely upward from the outer side of the inner protruding portion.

[0036] In addition, one end portion of the fan blade is connected to the hub, and the fan blade is arranged at equal intervals along the outer peripheral surface of the hub, and a plurality of the fan blades are provided.

[0037] Furthermore, the shroud is connected to the other end of the blade in an annular shape and is separated from the fan base. Furthermore, the outer diameter of the hub and the inner diameter of the shroud gradually decrease from the upper side to the lower side. Furthermore, the distance between the shroud and the skirt gradually increases from the lower side to the upper side. Furthermore, if the angle formed by the shroud with the horizontal is B1 and the angle formed by the skirt with the horizontal is B2, then B1 is less than B2.

[0038] In addition, a plurality of blades are provided, connecting the skirt and the shroud, and extending in a spiral shape.

[0039] In addition, the shroud further includes an inlet protrusion provided on the lower side of the shroud. The inlet protrusion is a ring-shaped protrusion that extends downward and is spaced apart from the fan base by a set distance.

[0040] In addition, the fan base may include: a base plate having a plate shape extending in a ring shape and a hollow provided in the center for moving air; and a bell mouth configured in a ring shape along the inner side of the base plate opposite to the hollow, forming a groove portion in a shape concave toward the upper side and surrounding the lower side of the inlet protrusion.

[0041] In addition, the fan base may further include a protruding rib located radially outside the bell mouth and arranged in a ring shape surrounding the periphery of the bell mouth.

[0042] The protruding rib is separated from the shield and has a second inclined surface whose inner diameter gradually increases toward the upper side. The second inclined surface is arranged to be parallel to the shield. The first inclined surface and the second inclined surface form the same angle with the horizontal line.

[0043] In addition, a portable air purifier with a diagonal flow fan module may include: a diagonal flow fan module, including a fan housing, a fan component and a fan base, the outer surface of the fan housing forms a curved surface along the circumferential direction, an operating space is formed on the inner side of the fan housing, the fan component is rotatably arranged on the inner side of the fan housing, and the fan base is combined with the fan housing to guide air to flow in the direction of the fan component; a housing part, the diagonal flow fan module is installed on the inner side of the housing part, the cylindrical inner flow path connected to the fan housing extends in the up and down directions, and an inlet part for inhaling air is provided on the lower side of the diagonal flow fan module; and a filter part, located on the inner side of the housing part, provided on at least any one of the lower side and the upper side of the diagonal flow fan module, for purifying the air.

[0044] In the diagonal flow fan module and the portable air purifier having the diagonal flow fan module of the present invention, the outer side of the fan housing of the diagonal flow fan module is formed into a circle and is installed to the inner side of the cylindrical housing portion. Therefore, air can be discharged stably in the up and down directions, thereby improving the air purification efficiency.

[0045] Furthermore, according to the present invention, air passing through the diagonal flow fan module easily reaches a user located above the air purifier, thereby improving consumer satisfaction.

[0046] In addition, according to the present invention, the passage between the fan component and the fan base is formed to be narrow, and the bell mouth provided at the fan base is set to be shaped around the lower end of the shield, thereby preventing cyclone from being generated through the inlet of the fan component to improve blowing efficiency.

[0047] In addition to the above-mentioned effects, specific effects of the present invention will be described below while explaining specific details for implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 FIG. 1 is a perspective view showing a diagonal flow fan module according to an embodiment of the present invention.

[0049] Figure 2 FIG. 1 is an exploded perspective view of a diagonal flow fan module according to an embodiment of the present invention.

[0050] Figure 3 FIG. 4 is a top view of a diagonal flow fan module according to an embodiment of the present invention.

[0051] Figure 4FIG. 4 is a bottom view of a diagonal flow fan module according to an embodiment of the present invention.

[0052] Figure 5 FIG. 4 is a cross-sectional view of a diagonal flow fan module according to an embodiment of the present invention.

[0053] Figure 6 FIG. 1 is a cross-sectional view showing air passing through a diagonal flow fan module according to an embodiment of the present invention.

[0054] Figure 7 This is a perspective view showing a fan housing according to an embodiment of the present invention.

[0055] Figure 8 FIG. 4 is a cross-sectional view of a fan housing according to an embodiment of the present invention.

[0056] Figure 9 FIG. 1 is a perspective view of a fan component according to an embodiment of the present invention.

[0057] Figure 10 FIG. 1 is a top view of a fan component according to an embodiment of the present invention.

[0058] Figure 11 FIG. 1 is a bottom view of a fan component according to an embodiment of the present invention.

[0059] Figure 12 FIG. 1 is a front view of a fan component according to an embodiment of the present invention.

[0060] Figure 13 FIG. 4 is a cross-sectional view of a fan component according to an embodiment of the present invention.

[0061] Figure 14 FIG. 1 is a perspective view of a fan base according to an embodiment of the present invention.

[0062] Figure 15 FIG. 4 is a cross-sectional view of a fan base according to an embodiment of the present invention.

[0063] Figure 16 The figure is an exploded perspective view of a portable air purifier equipped with a diagonal flow fan module according to an embodiment of the present invention.

[0064] Figure 17 FIG. 4 is a cross-sectional view of a portable air purifier having a diagonal flow fan module according to an embodiment of the present invention.

[0065] Figure 18 FIG. 4 is a front view of a portable air purifier having a diagonal flow fan module according to an embodiment of the present invention.

[0066] Figure 19 is a cross-sectional view illustrating air flow through a portable air purifier having a diagonal flow fan module according to an embodiment of the present invention.

[0067] Description of Reference Numerals

[0068] 1: Portable air purifier with diagonal flow fan module

[0069] 10: Shell

[0070] 20: First housing portion 21: Accommodation space 22: Inlet portion 23: Inlet hole 24: Discharge port

[0071] 30: Second housing part

[0072] 40: Filtration unit

[0073] 70: Diagonal flow fan module

[0074] 80: Fan housing 81: Support plate 82: Connecting support platform 83: Wire guide 84: Side support portion 85: Inner guide portion 86: Protrusion mounting groove portion 87: First inclined surface

[0075] 90: Fan component

[0076] 100: Hub 101: Hub plate 102: Shaft coupling portion 103: First reinforcement protrusion 105: Inner protrusion 106: Second reinforcement protrusion 107: Skirt

[0077] 110: wing 111: first end 112: second end 113: first edge 114: second edge

[0078] 120: Shield 121: Entrance protrusion

[0079] 130: Fan base 131: Base plate 132: Bell mouth 133: Protruding rib 134: Combination protrusion 135: Second inclined surface

[0080] 140: Discharge unit

[0081] 150: First discharge portion 152: First discharge core 154: First discharge body 156: Blade

[0082] 160: Second discharge part 161: Second discharge core 162: Second discharge body 163: Discharge support platform

[0083] 170: Sterilization unit 171: Sterilization support unit 176: Lifting unit 180: Irradiation unit

[0084] 181: Printed circuit board 182: Germicidal light source

[0085] 200: Battery

[0086] 300: Rotation support portion 310: Core member 350: Core support portion 360: Ball joint DETAILED DESCRIPTION

[0087] Below, the aforementioned objects, features, and advantages will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the technical concepts of the present invention. When describing the present invention, if it is determined that a specific description of a known technology related to the present invention may unnecessarily obscure the main purpose of the present invention, its detailed description will be omitted. Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings are used to represent the same or similar components.

[0088] Although terms such as first and second are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another component. Unless otherwise specifically stated, the first component may also be the second component.

[0089] Hereinafter, the statement that an arbitrary structure is arranged on the "upper part (or lower part)" of a constituent element or on the "above (or below)" of a constituent element may not only mean that the arbitrary structure is arranged in contact with the top surface (or bottom surface) of the constituent element, but may also mean that other structures may be interposed between the constituent element and the arbitrary structure arranged above (or below) the constituent element.

[0090] In addition, when it is recorded that a certain component is "coupled", "combined" or "connected" to another component, it should be understood that the components can be directly coupled or connected to each other, however, other components can be "sandwiched" between each component, or each component can be "coupled", "combined" or "connected" through other components.

[0091] Throughout the specification, unless otherwise specifically stated, each constituent element may be present in the singular or in the plural.

[0092] Unless otherwise clearly indicated in the context, expressions in the singular used in this specification include expressions in the plural. In this application, terms such as "consisting of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, but should be interpreted as not including some of the components or steps, or including additional components or steps.

[0093] Throughout the specification, when “A and / or B” is mentioned, it means A, B, or A and B unless otherwise specifically stated, and when “C to D” is mentioned, it means C or more and D or less unless otherwise specifically stated.

[0094] [Mixed flow fan module]

[0095] Figure 1 FIG. 1 is a perspective view showing a diagonal flow fan module 70 according to an embodiment of the present invention. Figure 2 FIG. 1 is an exploded perspective view of a diagonal flow fan module 70 according to an embodiment of the present invention. Figure 3 FIG. 1 is a top view of a diagonal flow fan module 70 according to an embodiment of the present invention. Figure 4 FIG. 1 is a bottom view of a diagonal flow fan module 70 according to an embodiment of the present invention. Figure 5 FIG. 1 is a cross-sectional view of a diagonal flow fan module 70 according to an embodiment of the present invention. Figure 6 FIG. 1 is a cross-sectional view showing air passing through a diagonal flow fan module 70 according to an embodiment of the present invention.

[0096] like Figures 1 to 6 As shown, the outer periphery of the diagonal flow fan module 70 according to one embodiment of the present invention is circular. The outer periphery of the fan housing 80, which forms the outer periphery of the diagonal flow fan module 70, is curved along the circumferential direction. Furthermore, the diagonal flow fan module 70, with its curved circumferential surface, is positioned in contact with the inner side of the cylindrical housing 10. This prevents a reduction in the air flow rate and enables smooth air flow from the lower side to the upper side of the housing 10.

[0097] In addition, the diagonal flow fan module 70 is located between the inlet portion 22 provided on the lower side of the housing portion 10 and the exhaust port 24 provided on the upper side of the housing portion 10, and various modifications can be made within the technical concept of blowing air toward the exhaust port 24 by rotating the fan.

[0098] The circular outer periphery of the diagonal flow fan module 70 is aligned with or corresponds to the inner shape of the cylindrical housing 10. Therefore, the shape of the housing 10 does not need to be increased to secure or tighten the diagonal flow fan module 70, thereby enabling product miniaturization. Furthermore, when the portable air purifier 1 including the diagonal flow fan module of the present invention is used in a vehicle, the size of the portable air purifier 1 including the diagonal flow fan module can be accommodated within a cup holder.

[0099] The fan type of the diagonal flow fan module 70 is a diagonal flow fan, and the internal structure of the diagonal flow fan module 70 is changed to be able to install the diagonal flow fan, thereby providing a top discharge type small air purifier that can maximize flow performance.

[0100] A diagonal flow fan module 70 according to one embodiment of the present invention may include: a fan housing 80 having a circumferentially curved outer surface and an operating space formed inside the fan housing 80; a fan member 90 rotatably disposed inside the fan housing 80; and a fan base 130 coupled to the fan housing 80 to guide air toward the fan member 90. Furthermore, since the fan housing 80, fan member 90, and fan base 130 are combined to form a module, assembly and disassembly are facilitated, reducing production and maintenance costs.

[0101] The fan member 90 of the present invention is rotated by the operation of a motor. The fan member 90 may be connected to the fan member 90 by simply connecting the rotating shaft of the motor. Alternatively, the fan member 90 may be provided with a rotor and a stator provided in the fan housing 80, whose rotation is restricted. Due to the change in the magnetic field of the stator, a shaft that rotates together with the rotor may be connected to the fan member 90, causing the rotor and the fan member 90 to rotate about the stator. The configuration of the motor for rotating the fan member 90 is well known, and therefore a detailed description thereof will be omitted.

[0102] [Fan housing]

[0103] Figure 7 1 is a perspective view showing a fan housing 80 according to an embodiment of the present invention. Figure 8 FIG. 8 is a cross-sectional view of a fan housing 80 according to an embodiment of the present invention.

[0104] like Figure 7 and Figure 8 As shown, the fan housing 80 is fixed to the inner side of the housing portion 10. A space is provided inside the fan housing 80 for rotating the fan member 90. Various modifications are possible within the scope of the above technical concept. The fan housing 80 of one embodiment of the present invention may include at least one of a support plate 81, a connecting support platform 82, a wire guide 83, a side support portion 84, an inner guide portion 85, and a protruding mounting groove portion 86.

[0105] The support plate 81 is located in the center of the fan housing 80 and may be formed in a disc shape. In addition, a hole is provided in the center of the support plate 81. A motor may be provided in the center of the support plate 81, or a shaft connected to the motor may be provided in the first direction.

[0106] The connecting support platform 82 extends radially outward from the support plate 81 and connects to the side support portion 84. In one embodiment of the present invention, the connecting support platform 82 may be provided in a plurality and may be provided in a rod shape. The connecting support platform 82 extending radially outward from the support plate 81 may connect to the side support portion 84.

[0107] The connection support platform 82 of one embodiment of the present invention is located below the core support portion 350 of the rotation support portion 300. Four connection support platforms 82 are provided at 90-degree intervals around the support plate 81, and the core support portion 350 is provided above the connection support platforms 82.

[0108] Wire guides 83 are continuously attached to the connection support platform 82, supporting the lower portion of the wires, allowing the wires of the electronic device to move along the side of the connection support platform 82. Wire guides 83 have a raised shape located at the lower portion of the side of the connection support platform 82, and are used to guide the wires of the motor, which are mounted on the support plate 81, toward the outside of the fan housing 80. Wire guides 83 can be provided on the side of the connection support platform 82, forming grooves for arranging the wires. Thus, the wires attached to wire guides 83 are arranged in the grooves on the side of the connection support platform 82, with the lower portion of the wires supported by the wire guides 83, thereby preventing damage to the wires.

[0109] The side support portion 84 has a cylindrical tube shape, open at the top and bottom. The outer side of the side support portion 84 contacts the inner side of the outer shell 10, and the inner side of the side support portion 84 is connected to the connecting support base 82. Furthermore, the side support portion 84 is separated from the support plate 81 and connected to the connecting support base 82, forming a circular curved surface along its outer periphery.

[0110] The inner guide portion 85 is formed with a first inclined surface 87 that slopes downward radially inward from the lower side of the side support portion 84. The inner guide portion 85 is formed on the inner side of the side support portion 84 to prevent a whirlwind phenomenon, where air blown upward by the fan member 90 moves through the outer side of the fan member 90 to the inlet of the fan member 90. Furthermore, the inner guide portion 85 protrudes inward of the side support portion 84 and has the first inclined surface 87, whose inner diameter gradually decreases toward the direction where the fan base 130 is located. Alternatively, the inner guide portion 85 can be positioned on the lower side of the side support portion 84, opposite the fan base 130.

[0111] The protrusion mounting groove 86 is formed as a groove on the underside of the side support portion 84, and is used to connect to the coupling protrusion 134 provided on the fan base 130. The protrusion mounting groove 86 has a groove portion for receiving the coupling protrusion 134 of the fan base 130 described later. Various modifications are possible within the scope of the above technical concept. In one embodiment of the present invention, a plurality of protrusion mounting grooves 86 are provided along the circumference of the side support portion 84.

[0112] [Fan component]

[0113] Figure 9 FIG. 1 is a perspective view of a fan component 90 according to an embodiment of the present invention. Figure 10FIG. 1 is a top view of a fan component 90 according to an embodiment of the present invention. Figure 11 FIG. 1 is a bottom view of a fan component 90 according to an embodiment of the present invention. Figure 12 FIG. 1 is a front view of a fan component 90 according to an embodiment of the present invention. Figure 13 FIG. 1 is a cross-sectional view of a fan assembly 90 according to an embodiment of the present invention.

[0114] like Figures 9 to 13 As shown, the fan member 90 is rotatably provided inside the fan housing 80 and can move the air toward the discharge portion 140 . Various modifications are possible within the scope of the above technical concept.

[0115] A diagonal flow fan can be used as the fan member 90, however, this is only one embodiment of the present invention, and other types of fans can also be used as the fan member 90 of the present invention. The fan member 90 of an embodiment of the present invention can include at least any one of a hub 100, blades 110 and a shroud 120.

[0116] The hub 100 is located at the center of the fan housing 80 and is rotated by receiving external power. Various modifications can be made within the scope of the above technical concept.

[0117] Hub 100 is disposed at the radial center of fan assembly 90 and is rotatable along with the rotor constituting the motor and the shaft serving as the motor's output shaft. Hub 100, in one embodiment of the present invention, may include at least one of a hub plate portion 101, a shaft coupling portion 102, an inner protrusion 105, a skirt portion 107, a first reinforcement protrusion 103, and a second reinforcement protrusion 106.

[0118] The hub plate portion 101 is rotatably disposed inside the fan housing 80 and is located in the radial center of the fan housing 80. The hub plate portion 101 may be formed in a disk shape parallel to the support plate 81. The hub plate portion 101 may be provided with a shaft coupling portion 102.

[0119] The shaft coupling portion 102 can be disposed in the radial center of the hub plate portion 101. The shaft coupling portion 102 can be formed to protrude in at least one direction, either the upper side or the lower side, of the hub plate portion 101. Furthermore, the shaft coupling portion 102 can be coupled to the axial end of a shaft transmitting rotational power to receive the rotational power. For example, the coupling between the shaft coupling portion 102 and the shaft can be achieved by inserting the shaft into the shaft coupling portion 102.

[0120] First reinforcing protrusions 103 are provided at predetermined intervals along the periphery of shaft coupling portion 102. First reinforcing protrusions 103 are radially arranged with shaft coupling portion 102 as the center, forming band-shaped protrusions on the outside of shaft coupling portion 102. Therefore, stress concentrated on shaft coupling portion 102 is dispersed by first reinforcing protrusions 103, thereby enhancing the structural rigidity of shaft coupling portion 102.

[0121] The inner protrusion 105 extends from the hub plate 101 toward the upper side where the support plate 81 is provided. The inner protrusion 105 of one embodiment of the present invention is provided in an arc direction along the outer edge of the hub plate 101. The inner protrusion 105 has a vertically extending tubular shape.

[0122] In addition, second reinforcing protrusions 106 are provided at set intervals along the inner periphery of the inner protrusion 105. The second reinforcing protrusions 106 extend in the up-down direction along the inner side surface of the inner protrusion 105, and the lower side thereof has a band shape that is bent in the direction toward the shaft coupling portion 102 and connected to the hub plate portion 101. The second reinforcing protrusions 106 are provided in the first direction along the inner side surface of the inner protrusion 105, and the lower side of the second reinforcing protrusions 106 forms a band-shaped protrusion extending toward the shaft coupling portion 102. Therefore, the stress concentrated on the inner protrusion 105 is dispersed by the second reinforcing protrusions 106, thereby strengthening the structural rigidity of the inner protrusion 105. As needed, the rotor of the motor portion can be fixed to the inner side of the inner protrusion 105.

[0123] The skirt portion 107 can protrude from the inner protrusion 105 or the hub plate portion 101 toward the upper side of the support plate 81. In one embodiment of the present invention, the skirt portion 107 extends obliquely upward from the outer side of the inner protrusion 105. Alternatively, the skirt portion 107 can form an inclined surface that gradually inclines outward in a second direction as it moves away from the hub plate portion 101 in a first direction. The skirt portion 107 is located outside the inner protrusion 105, and the inner diameter of the skirt portion 107 gradually increases from the lower side to the upper side.

[0124] For example, the connection between the hub plate portion 101 and the skirt portion 107 may be in the shape of a truncated cone with a hollow interior and one side open. The skirt portion 107 may be in the shape of a funnel with an open upper side and a lower side blocked by the hub plate portion 101 .

[0125] [wings]

[0126] A plurality of wings 110 are provided and can be arranged at equal intervals along the outer circumference of the hub 100. The wings 110 protrude outward from the hub 100 with the hub 100 as the center, and the wings 110 extend in a spiral shape. In addition, the plurality of wings 110 can be arranged at predetermined intervals along the outer circumference of the hub 100.

[0127] Along the centrifugal direction extending in a spiral shape from the center of the shaft coupling portion 102, the fan blade 110 of one embodiment of the present invention can protrude toward the outside of the skirt portion 107. In addition, when the direction from the outside of the shaft coupling portion 102 toward the shaft coupling portion 102 is referred to as the radial direction, the radial inner side of the fan blade 110 can be connected to the skirt portion 107, and the radial outer side of the fan blade 110 can be connected to the shroud 120 described later. In addition, one end portion of the fan blade 110 is connected to the hub 100, connecting the skirt portion 107 to the shroud 120, and extending in a spiral shape.

[0128] The skirt 107 is the portion of the hub 100 that is directly connected to the blades 110 and is in direct contact with the air passing through the blades 110. The skirt 107 is also closely related to the flow path of the air passing through the diagonal flow fan module 70.

[0129] Each of the wings 110 connected between the shroud 120 and the skirt 107 may include a first end 111 , a second end 112 , a first edge 113 , and a second edge 114 .

[0130] The first end portion 111 may be disposed at a front end of the blade 110 in the rotational direction and formed in a straight line extending in the radial direction. The rotational direction is defined as the direction in which the fan member 90 rotates.

[0131] The second end portion 112 may be disposed at a rear end of the blade 110 in the rotational direction and may be formed in a radial shape with the shaft coupling portion 102 as the center.

[0132] The first edge 113 may connect one end of the first end portion 111 and one end of the second end portion 112 . The first edge 113 may be connected to the inner circumference of the shield 120 .

[0133] The second edge 114 may connect the other end of the first end portion 111 and the other end of the second end portion 112. Such a second edge 114 may be connected to the outer circumferential surface of the hub 100.

[0134] That is, one end of the first end portion 111 and one end of the second end portion 112 may be connected to the inner circumference of the shroud 120 . In addition, the other end of the first end portion 111 and the other end of the second end portion 112 may be connected to the outer circumference of the skirt portion 107 .

[0135] One end of the first end portion 111 can be arranged closer to the radial center of the hub plate portion 101 than one end of the second end portion 112. In addition, the other end of the second end portion 112 can be arranged closer to the radial center of the hub plate portion 101 than the other end of the first end portion 111. This is because one end and the other end of the first end portion 111 are arranged forward in the rotational direction compared to one end and the other end of the second end portion 112, and the skirt portion 107 is formed in a form in which its radius gradually decreases as it approaches the front in the rotational direction.

[0136] According to this embodiment, the blades 110 are connected to the skirt 107 in the hub 100. The skirt 107 forms an inclined surface in an upwardly inclined direction to guide the air flowing into the diagonal flow fan module 70 to flow in an upwardly inclined direction.

[0137] [Shield]

[0138] The shield 120 can be connected to the other end of the blade 110 to be set in a ring shape, and can be separated from the fan base 130. Various modifications can be made within the scope of the above technical concept.

[0139] The shroud 120 is provided along the periphery of the skirt 107, and the shroud 120 and the skirt 107 are connected via the wing 110. In addition, the outer diameter of the hub 100 and the inner diameter of the shroud 120 may be gradually reduced from the upper side toward the lower side.

[0140] Furthermore, the distance between the shroud 120 and the skirt 107 gradually increases from the bottom to the top. If the angle formed by the shroud 120 with the horizontal is B1 and the angle formed by the skirt 107 with the horizontal is B2, then B1 is smaller than B2. As described above, the distance between the shroud 120 and the skirt 107, connected by the blades 110, gradually increases from the bottom to the top. This facilitates smoother blowing of the diagonal flow fan, which discharges air in an upwardly inclined direction, thereby increasing the amount of air delivered.

[0141] The shroud 120 may be spaced apart from the hub 100 at a predetermined interval in the radial direction and may be disposed radially outside the hub 100. Furthermore, the shroud 120 may be spaced apart from the hub 100 at an interval corresponding to the radial length of the blades 110. Furthermore, each blade 110 may be connected between the skirt 107 of the hub 100 and the shroud 120.

[0142] The shield 120 may form an inclined surface substantially parallel to the skirt 107. In this embodiment, the skirt 107 and the shield 120 are arranged such that the distance between them gradually widens toward the upper side of the shield 120.

[0143] The shroud 120 according to one embodiment of the present invention further includes an inlet protrusion 121 disposed on the underside of the shroud 120. The inlet protrusion 121 on the underside of the shroud 120 is a ring-shaped protrusion that extends along a first direction from the underside of the funnel-shaped shroud 120. Furthermore, the inlet protrusion 121 extends downward and is spaced a predetermined distance from the fan base 130. The inlet protrusion 121 is located inside a bell mouth 132 (described later), thereby preventing swirling of air flowing from the outside of the shroud 120 into the inlet disposed on the underside of the shroud 120.

[0144] [Fan base]

[0145] Figure 14 is a three-dimensional diagram of a fan base 130 according to an embodiment of the present invention. Figure 15 FIG. 1 is a cross-sectional view of a fan base 130 according to an embodiment of the present invention.

[0146] like Figure 14 and Figure 15 As shown, the fan base 130 is combined with the lower side of the fan housing 80 to guide the air passing through the filter 40 to flow into the fan member 90. Various modifications can be made within the scope of the above technical concept.

[0147] In addition, the fan base 130 may include: a base plate 131, which has a plate shape extending in a ring shape and has a hollow in the center for moving air; and a bell mouth 132, which is configured in a ring shape along the inner side of the base plate 131 opposite to the hollow, forming a groove portion with a concave shape toward the upper side and surrounding the lower side of the inlet protrusion 121.

[0148] The fan base 130 may be disposed between the filter 40 and the fan member 90. Furthermore, the edge shape of the fan base 130 may be formed to correspond to the edge shape of the filter 40. For example, when the filter 40 is cylindrical and the edge shape of the filter 40 is circular, the fan base 130 may be configured to have a hollow ring shape.

[0149] The base plate 131 may be disposed between the filter unit 40 and the fan member 90. The base plate 131 has a plate shape extending in a ring shape and has a hollow portion at the center for moving air.

[0150] The bell mouth 132 is provided in a ring shape on the inner side opposite to the hollow of the base plate 131. The bell mouth 132 has a concave longitudinal section surrounding the lower side of the inlet protrusion 121 of the shroud 120 and extends in the circumferential direction.

[0151] The bell mouth 132 may be formed in a form surrounding a hollow outer peripheral surface formed in the center of the base plate 131. The bell mouth 132 may be formed to be convex toward the lower side, or may be formed to have a groove portion in a shape concave toward the upper side.

[0152] At least a portion of the bell mouth 132 may be inserted radially inward of the shroud 120. The bell mouth 132 guides the suction flow at the inlet of the diagonal flow fan module 70, thereby helping to improve the suction and discharge performance of the diagonal flow fan module 70.

[0153] The coupling protrusion 134 protrudes toward the upper side of the base plate 131 and is inserted into and coupled with the protrusion mounting groove 86 provided in the fan housing 80 , so that the fan base 130 is fixed to the lower side of the fan housing 80 .

[0154] The fan base 130 and the fan housing 80 can be coupled at multiple points by coupling the coupling protrusions 134 and the protrusion mounting grooves 86. As described above, if the fan base 130 and the fan housing 80 are coupled, the fan member 90 can be rotatably disposed between the fan base 130 and the fan housing 80.

[0155] The protruding rib 133 can protrude from the base plate 131 and be disposed radially outward of the bell mouth 132. In one embodiment of the present invention, the protruding rib 133 is located radially outward of the bell mouth 132 and is configured in a ring shape surrounding the periphery of the bell mouth 132. Alternatively, the protruding rib 133 can be integrally formed with the base plate 131. More specifically, the base plate 131, the bell mouth 132, and the protruding rib 133 can be integrally formed.

[0156] The protruding rib 133 of one embodiment of the present invention is spaced apart from the shield 120 and has a second inclined surface 135 whose inner diameter gradually increases toward the upper side. Furthermore, the second inclined surface 135 is arranged parallel to the outer side of the shield 120. Furthermore, the first inclined surface 87 and the second inclined surface 135 form the same angle with the horizontal line.

[0157] In addition, the protruding rib 133 can be arranged to be inclined at the same angle as the outer side surface of the shield 120, and the distance between the protruding rib 133 and the shield 120 can be maintained constant. The protruding rib 133 facing the shield 120 protrudes toward the upper side of the base plate 131, and forms a second inclined surface 135 on its upper side. The second inclined surface 135 of the protruding rib 133 can be spaced apart from the shield 120 by a predetermined distance and arranged to be parallel to the outer side of the shield 120.

[0158] Furthermore, the second inclined surface 135 of the protruding rib 133 may have the same inclination angle as the first inclined surface 87 provided on the inner guide portion 85 of the fan housing 80. Therefore, it is possible to prevent a cyclone phenomenon in which a portion of the air that has moved upward through the space between the shroud 120 and the skirt 107 moves toward the inlet of the fan member 90 through the space between the shroud 120 and the protruding rib 133.

[0159] The passage between the fan component 90 and the fan base 130 is formed to be narrow, and the bell mouth 132 provided on the fan base 130 is set in a shape surrounding the lower end of the shield 120, thereby reducing or blocking the flow of air moving from the outside of the fan component 90 to the inlet of the fan component, thereby preventing the cyclone phenomenon.

[0160] [Overall structure of a portable air purifier with a diagonal flow fan module]

[0161] Figure 16 This is an exploded perspective view of a portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention. Figure 17 is a cross-sectional view of a portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention. Figure 18 1 is a front view of a portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention. Figure 19 1 is a cross-sectional view showing the flow of air through a portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention.

[0162] like Figures 16 to 19 As shown, a portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention may include: a diagonal flow fan module 70, including a fan housing 80, a fan component 90 and a fan base 130, wherein the outer surface of the fan housing 80 forms a curved surface along the circumferential direction, an operating space is provided on the inner side of the fan housing 80, the fan component 90 is rotatably provided on the inner side of the fan housing 80, and the fan base 130 is combined with the fan housing 80 to guide air to flow in the direction toward the fan component 90; a housing portion 10, the diagonal flow fan module 70 is mounted on the inner side of the housing portion 10, a cylindrical inner flow path connected to the fan housing 80 extends in the up and down direction, and an inlet portion 22 for inhaling air is provided on the lower side of the diagonal flow fan module 70; and a filter portion 40, located on the inner side of the housing portion 10, provided on at least any one of the lower side and the upper side of the diagonal flow fan module 70, for purifying air. In addition, the portable air purifier 1 having the diagonal flow fan module may include at least any one of the discharge unit 140 , the sterilization unit 170 , the battery 200 , and the rotation support unit 300 .

[0163] The housing portion 10 of one embodiment of the present invention includes a first housing portion 20 and a second housing portion 30. The first housing portion 20 and the second housing portion 30 form the external structure of the portable air purifier 1 having a diagonal flow fan module. A cylindrical air flow path is formed on the inner side of the housing portion 10, guiding the movement of air from the lower side to the upper side. In addition, a diagonal flow fan module 70 having a circular edge is installed on the inner side of the housing portion 10. Therefore, a gap is prevented from being generated between the diagonal flow fan module 70 and the housing portion 10, thereby blocking the movement of air between the diagonal flow fan module 70 and the housing portion 10.

[0164] In addition, the air flowing into the lower portion of the housing 10 is discharged to the upper side of the housing 10 by the diagonal flow fan module 70 , and can easily reach a user located above the air purifier.

[0165] The side and bottom appearance of the portable air purifier 1 with a diagonal flow fan module are formed by a first housing portion 20 and a second housing portion 30. A storage space is formed inside the first housing portion 20 and the second housing portion 30. This storage space accommodates electrical components such as the filter portion 40, the diagonal flow fan module 70, the sterilization portion 170, the rotation support portion 300, and the battery 200. The first housing portion 20 and the second housing portion 30 are preferably formed to have sufficient strength to protect the components contained therein from external impact.

[0166] The filter unit 40 is disposed within the housing space of the first housing portion 20 and is positioned between the diagonal flow fan module 70 and the inlet portion 22. Specifically, the filter unit 40 is positioned below the diagonal flow fan module 70 and is configured to purify air drawn in through the inlet portion 22 of the portable air purifier 1 having a diagonal flow fan module. The purified air passing through the filter unit 40 is then discharged through the diagonal flow fan module 70 and the discharge portion 140 to the upper portion of the portable air purifier 1 having a diagonal flow fan module.

[0167] The filter unit 40 is provided inside the first housing portion 20 to purify the air flowing into the inner side of the inlet portion 22. In addition, the filter unit 40 may be formed in a cylindrical shape extending in the vertical direction.

[0168] The filter unit 40 may be composed of a single filter, or may be configured as a plurality of filters stacked together as needed.

[0169] The filter housing may be fixed inside the first housing portion 20 , and an insertion space for accommodating a filter may be formed inside the filter housing.

[0170] The diagonal flow fan module 70 can be housed within the interior space of the first housing portion 20 and positioned between the discharge portion 140 and the filter portion 40. More specifically, the diagonal flow fan module 70 can be positioned between the exhaust port 24 and the filter portion 40. Specifically, the diagonal flow fan module 70 is positioned above the filter portion 40, with the exhaust port 24, the rotation support portion 300, and the discharge portion 140 disposed therein. This diagonal flow fan module 70 is configured to draw in air that flows into the lower portion of the filter portion 40 through the inlet portion 22 and to discharge the air toward the upper portion of the first housing portion 20.

[0171] The center of rotation of the discharge portion 140 can be aligned vertically with the center of the diagonal flow fan module 70. Air flowing in through the inlet portion 22 moves upward, passes through the filter portion 40, the diagonal flow fan module 70, and the discharge portion 140 in sequence, and is then discharged to the upper side of the portable air purifier 1 having the diagonal flow fan module.

[0172] The diagonal flow fan module 70 can suck the air that has passed through the filter unit 40 in the axial direction and discharge the air in a direction between the axial direction and the radial direction.

[0173] The discharge portion 140 is rotatably mounted on the upper side of the first housing portion 20 to guide the discharge direction of air that has moved upward through the discharge port 24. A rotation support portion 300 is mounted on the upper portion of the first housing portion 20, and the discharge portion 140 is rotatably mounted on the rotation support portion 300. The upper and lower sides of the discharge portion 140 are open, so air that has moved to the lower portion of the discharge portion 140 through the discharge port 24 can be discharged from the upper portion of the discharge portion 140 to the outside of the portable air purifier 1 with a diagonal flow fan module.

[0174] The sterilizing unit 170 can be located below the filter unit 40 and fixed to at least one of the first housing portion 20 and the second housing portion 30. The sterilizing unit 170 is spaced a predetermined distance from the filter unit 40 and irradiates sterilizing light toward the filter unit 40. Because the sterilizing light irradiated from the sterilizing unit 170 is harmful to the human body, the sterilizing unit 170 is installed in a position to prevent the sterilizing light from leaking out of the portable air purifier 1 with the diagonal flow fan module through the inlet portion 22.

[0175] The battery 200 is installed in the storage space provided inside the second housing portion 30 and is disposed below the sterilization portion 170. The battery 200 can supply power for driving the portable air purifier 1 having the diagonal flow fan module.

[0176] Defining Directions. When the direction from the first housing portion 20 toward the discharge portion 140 is referred to as the upper direction, and the direction from the first housing portion 20 toward the second housing portion 30 is referred to as the lower direction, the "first direction" refers to the vertical direction or the axial direction. Alternatively, the "first direction" may be defined as having the same meaning as the vertical direction. Furthermore, the "second direction," as a direction perpendicular to the first direction, may refer to the left-right direction, the horizontal direction, or the radial direction.

[0177] [Outer casing]

[0178] The housing 10 has an inlet 22. The filter 40, sterilizer 170, and diagonal flow fan module 70 can be located inside the housing 10. Furthermore, the housing 10 forms an air flow path in the vertical direction. The cylindrical air flow path formed inside the housing 10 reduces frictional resistance of air moving in the vertical direction.

[0179] Furthermore, along a vertical reference line extending vertically through the center of the housing 10, the centers of the inlet 22, the filter 40, the sterilizer 170, the diagonal flow fan module 70, the exhaust port 24, and the rotary support 300 can be aligned vertically. Consequently, air moving from the bottom to the top of the housing 10 flows in a straight vertical line, shortening the air path and thereby improving air purification efficiency by reducing air flow resistance.

[0180] When the portable air purifier 1 with the diagonal flow fan module is placed on a horizontal surface, the vertical reference line coincides with the vertical line. In addition, the housing 10 may be formed of a single member, but preferably, it may also be formed of a plurality of members.

[0181] Overall, the portable air purifier 1 with a diagonal flow fan module can be formed into an upright cylindrical shape with a long vertical length. This allows the user to use the portable air purifier 1 with a diagonal flow fan module upright or lying down. Furthermore, in locations subject to vibration, such as the interior of a vehicle, the portable air purifier 1 with a diagonal flow fan module can be used by being mounted in a downwardly recessed groove, such as a cup holder, thereby maintaining its position stably.

[0182] [Detailed composition of portable air purifier components]

[0183] The portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention may include at least one of a housing 10, a filter 40, a diagonal flow fan module 70, a discharge portion 140, and a rotation support portion 300. Furthermore, the portable air purifier 1 having a diagonal flow fan module according to an embodiment of the present invention may further include a sterilization portion 170 and a battery 200.

[0184] [First housing portion]

[0185] The outer shell portion 10 may include a first shell portion 20 and a second shell portion 30. The first shell portion 20 may form a accommodating space inside, and an inlet portion 22 for inhaling air may be provided on the lower side. The first shell portion 20 may be formed into a cylindrical shape, and may be provided in a shape with an upper side and a lower side open. The first shell portion 20 may be composed of a single component, or may be composed of a plurality of components as needed. The first shell portion 20 of an embodiment of the present invention is composed of a plurality of components, each of which may be interference fit or bonded by adhesive or welding, or may be implemented in various deformations, for example, connected to each other by fastening components such as bolts.

[0186] On the other hand, air is drawn in through the lower side of the first housing portion 20 and discharged through the upper side of the first housing portion 20. To this end, an inlet portion 22 having an inlet hole 23 is provided along the lower periphery of the first housing portion 20. Furthermore, an outlet 24 for discharging air may be provided on the upper side of the first housing portion 20.

[0187] In addition, while the inlet portion 22 for taking in air is provided along the periphery of the first housing portion 20 , the filter portion 40 is provided above the inlet portion 22 , thereby enabling uniform movement of air over the entire area of ​​the filter portion 40 .

[0188] On the other hand, a plurality of inlet holes 23 are formed in the inlet portion 22. These inlet holes 23 can be arranged obliquely in a diagonal line shape, or, if desired, can be formed in an unequal shape with a bent middle portion. Furthermore, various modifications can be made to increase the flow rate of air flowing into the filter portion 40. For example, the inlet holes 23 can be formed on the side of the housing portion 10 where the filter portion 40 is located.

[0189] On the other hand, the outer shell 10 can be implemented in various modifications. For example, it can be composed of three or more members.

[0190] [Second housing portion]

[0191] The second housing portion 30 can be connected to the lower portion of the first housing portion 20 to form a space inside the second housing portion 30 for installing electrical components including the battery 200. Various modifications can be made within the scope of the above-mentioned technical concept.

[0192] At least one of the first housing portion 20 and the second housing portion 30 may be formed as a cylindrical housing. Both the first housing portion 20 and the second housing portion 30 may be formed as cylindrical, or only the second housing portion 30 may be formed as cylindrical. Alternatively, as desired, only the first housing portion 20 may be formed as cylindrical.

[0193] When the second housing portion 30 is formed into a cylindrical shape and extends in the vertical direction, it is convenient for the user to grasp the outer periphery of the second housing portion 30 with his hands, and it is also easy to place the second housing portion 30 in a cup holder of a vehicle having a groove portion having a substantially circular cross-section.

[0194] In addition, when the first shell portion 20 is formed into a cylindrical shape, the friction generated by the air moving upward while passing through the inner side of the first shell portion 20 and contacting the inner side of the first shell portion 20 forming a curved shape is reduced, thereby enabling the air flow to be smoother.

[0195] On the other hand, an air flow path is formed on the inner side of the first shell portion 20, while no air flow path is formed on the inner side of the second shell portion 30. Therefore, even when the second shell portion 30 is placed on the cup holder or grasped by the user's hand, the intake and exhaust of air through the first shell portion 20 can be carried out smoothly, thereby improving the convenience of use.

[0196] [Filtration Department]

[0197] The filter unit 40 is disposed inside the first housing 20 to purify the air flowing into the inlet 22. Various modifications are possible within the scope of the above technical concept. In one embodiment of the present invention, the filter unit 40 may be formed in a cylindrical shape.

[0198] The first housing portion 20 is in the shape of a circular tube, and the filter portion 40 disposed inside the first housing portion 20 is also in the shape of a cylinder connected to the inside of the first housing portion 20 . Therefore, impurities in the air passing through the inside of the first housing portion 20 can be effectively removed.

[0199] The filter unit 40 has a circular cross-section, thus maximizing its area within the first housing portion 20. Furthermore, the filter unit 40 is formed into a cylindrical shape, and by cutting the upper and lower ends of the material constituting the filter unit 40, pressure loss is minimized, thereby maximizing the performance of the filter unit 40.

[0200] Furthermore, the outer diameter of the filter unit 40 is formed to be larger than the suction diameter of the bell mouth 132 for sucking air into the diagonal flow fan module 70 , thereby maximizing the volume of the filter unit 40 .

[0201] Furthermore, according to this embodiment, the filter unit 40, the diagonal flow fan module 70, and the discharge unit 140 can be arranged in a vertical direction along the housing 10, and the air flow can also be directed in the same vertical direction. In other words, the air flow generated by the operation of the diagonal flow fan module 70 can be directed in a linear direction that is the same as the arrangement direction of the filter unit 40, the diagonal flow fan module 70, and the discharge unit 140.

[0202] As described above, if the air flow is formed in a straight line, the resistance to the air flow is reduced accordingly, thereby making the air flow smoother. As a result, the diagonal flow fan module 70 can achieve a sufficient amount of air intake and a corresponding sufficient amount of air discharge, thereby correspondingly improving the air purification performance of the portable air purifier 1 having the diagonal flow fan module.

[0203] [Discharge section]

[0204] The discharge portion 140 is located at the outlet 24 of the housing 10 and is rotatably mounted on the rotating support 300. It is used to direct the discharge direction of air passing through the diagonal flow fan module 70. Various modifications are possible within the scope of the above-described technical concept. The discharge portion 140 of the present invention is rotatably mounted on a spherical ball joint 360 provided on the rotating support 300, thereby enabling smooth rotation.

[0205] The discharge portion 140, disposed on the upper side of the housing 10, is open in the vertical direction and rotatably connected to the rotation support 300, thereby adjusting the discharge direction of air passing through the diagonal flow fan module 70. In one embodiment of the present invention, the discharge portion 140 may include a first discharge portion 150 and a second discharge portion 160.

[0206] [First discharge section]

[0207] The first discharge portion 150 is located on one side of the ball joint 360 and is provided with a plurality of vanes 156 for guiding the discharge of air. Various modifications are possible within the scope of the above technical concept. In one embodiment of the present invention, the first discharge portion 150 may include a first discharge core 152, a first discharge body 154, and vanes 156.

[0208] The first ejection core 152 is located above the ball joint 360 and can be formed in various shapes, including a disc. Furthermore, the first ejection body 154 is separate from the first ejection core 152 and can be provided in a ring-shaped configuration surrounding the outer surface of the first ejection core 152. Furthermore, the outer surface of the first ejection body 154 is formed into a curved surface and is provided separate from the outer shell 10, thereby preventing the first ejection unit 150 from contacting the outer shell 10 during rotation.

[0209] Furthermore, the first discharging core 152 and the first discharging body 154 are connected by a plurality of blades 156 , so that the first discharging core 152 , the first discharging body 154 , and the blades 156 can rotate together.

[0210] [Second discharge section]

[0211] The second discharge portion 160 is located on the other side of the ball joint 360 (with Figure 17 The second discharge unit 160 is connected to the first discharge unit 150 and rotates with the first discharge unit 150 about the ball joint 360. Various modifications are possible within the scope of the above technical concept. The second discharge unit 160 of one embodiment of the present invention may include a second discharge core 161, a second discharge body 162, and a discharge support 163.

[0212] The second ejection core 161 is formed to surround the lower side of the spherical shape of the ball joint 360 and is located below the first ejection core 152. The second ejection body 162 is formed to be annular and surround the outer side of the second ejection core 161. The outer side of the second ejection body 162 is formed into a curved surface.

[0213] Furthermore, the second discharging core 161 and the second discharging body 162 are connected via a plurality of discharging support platforms 163 , so that the second discharging core 161 , the second discharging body 162 , and the discharging support platforms 163 can rotate together.

[0214] [Sterilization Department]

[0215] The sterilization unit 170 is located between the filter 40 and the second housing 30 and irradiates sterilizing light toward the filter 40. Various modifications are possible within the scope of the aforementioned technical concept. In one embodiment of the present invention, the sterilization unit 170 may include at least one of a sterilization support 171, a lifting portion 176, and an irradiation unit 180.

[0216] [Sterilization support part]

[0217] The sterilization support portion 171 is located between the first housing portion 20 and the second housing portion 30, shielding the lower portion of the first housing portion 20. Furthermore, the sterilization support portion 171 is located below the irradiation portion 180 and is connected to the outer shell portion 10 to restrict its movement. Various modifications are possible within the scope of the above-described technical concept.

[0218] The air flowing into the inner side of the first shell portion 20 through the inlet portion 22 is blocked by the sterilization support portion 171 and cannot move to the second shell portion 30, thereby increasing the air flow rate moving to the diagonal flow fan module 70, thereby improving the air purification performance of the portable air purifier 1 with the diagonal flow fan module.

[0219] The support portion 176 protrudes upward from the center of the sterilization support portion 171 to support the lower portion of the irradiation portion 180. Various modifications are possible within the scope of the above-described technical concept. Furthermore, the support portion 176 is located radially in the center of the inlet portion 22 and can have a circular cross-section to reduce friction with air.

[0220] The lifting portion 176 may be a columnar shape protruding upward from the center of the sterilization support portion 171. Alternatively, the lifting portion 176 may be cylindrical or conical. In one embodiment of the present invention, the lifting portion 176 has a cross-section that gradually decreases from the bottom to the top. The lifting portion 176 is located in the center of the first housing portion 20, where the inlet 22 is formed, thereby minimizing friction with air.

[0221] The sterilization support portion 171, provided for sterilizing the filter unit 40, has a circular cross-section. The air flowing in through the inlet portion 22 spirals due to the inclined shape of the inlet hole 23, and then spirals around the outside of the support portion 176, moving upward toward the filter unit 40. Specifically, the sterilization unit 170 is located in the center of the first housing portion 20. Air flowing in through the inlet portion 22 flows upward around the periphery of the sterilization unit 170, thereby reducing flow resistance within the sterilization unit 170.

[0222] The lifting portion 176, the rotation center of the fan component 90, and the core component 310 of the rotating support portion 300 described later are located on a straight line in the vertical direction, thereby reducing the resistance to the flow of air moving from the lower side to the upper side, thereby making the flow of air smoother, thereby improving the air purification performance of the portable air purifier 1 with a diagonal flow fan module.

[0223] Illuminating section 180 is mounted above supporting section 176 and can irradiate sterilizing light toward filter section 40. Furthermore, irradiating section 180 can be positioned on a vertical reference line that vertically passes through the radial center of inlet section 22. Therefore, when filter section 40 is positioned above irradiating section 180, the entire lower end of filter section 40 can be sterilized with a relatively small number of sterilizing light sources 182, thereby reducing production and maintenance costs.

[0224] Furthermore, the irradiation unit 180 is positioned at a higher position than or at the same position as the upper end of the inlet 22. Various modifications are possible within the scope of the aforementioned technical concept. In one embodiment of the present invention, the irradiation unit 180 may include a printed circuit board 181 and a germicidal light source 182. The printed circuit board 181 is positioned above the support portion 176, and a germicidal light source 182 for irradiating germicidal light is provided above the printed circuit board 181. The germicidal light source 182 may be a UVC LED. In addition, various other types of sterilization devices may be used within the scope of the technical concept for sterilizing bacteria present in the filter 40.

[0225] On the other hand, the sterilizing light source 182 of the sterilizing unit 170 is located above the inlet 22 , thereby preventing the sterilizing light source 182 from irradiating the outside of the first housing 20 through the inlet 22 .

[0226] [Rotation support part]

[0227] The rotating support 300 is connected to the outer shell 10 and rotatably supports the discharge portion 140. Various modifications are possible within the scope of the above-described technical concept. Alternatively, the rotating support 300 can rotatably support the discharge portion 140 at the center of the discharge port 24 located inside the outer shell 10. The rotating support 300 of one embodiment of the present invention may include at least one of a core member 310, a core support 350, and a ball joint 360.

[0228] The core member 310 is located below the discharge portion 140 for adjusting the discharge direction of air and may extend from the center of the outlet 24 toward the discharge portion 140. The core member 310 is located in the radial center of the first housing portion 20.

[0229] The lower portion of the core member 310 has a circular cross-section, aligning with the center of the diagonal flow fan module 70 (described later). Specifically, the support plate 81, located in the radial center of the diagonal flow fan module 70, is positioned below the core member 310. Therefore, air that passes around the periphery of the support plate 81 and moves upward along the outer side of the core member 310 and toward the inner side of the discharge portion 140. This reduces air flow resistance and improves air purification efficiency.

[0230] The lower surface of core member 310, which faces support plate 81 of diagonal flow fan module 70, is formed to have an area equal to or smaller than that of support plate 81. This prevents air passing through diagonal flow fan module 70 from contacting the lower portion of core member 310 and increasing flow resistance. The cross-sectional area of ​​the lower end of core member 310 is equal to or smaller than that of support plate 81 of diagonal flow fan module 70. Core member 310 is positioned above support plate 81 in the first direction.

[0231] Furthermore, the core member 310 is formed into a conical shape toward the upper side, thereby minimizing the area generating friction with the air moving outside the core member 310 , reducing friction with the air, and thereby improving air purification efficiency.

[0232] The core support portion 350 extends outward from the core member 310 and is connected to the outer shell 10 , so that the movement of the core support portion 350 and the core member 310 is restricted.

[0233] Furthermore, the core support portion 350 of one embodiment of the present invention can be located above the connection support platform 82 of the diagonal flow fan module 70, described later. For example, if four connection support platforms 82 are arranged at 90-degree intervals around the support plate 81, four core support portions 350 are also arranged at 90-degree intervals around the core member 310. The connection support platforms 82 are located below the core support portion 350, and when viewed from above, the core support portion 350 and the connection support platforms 82 are arranged to overlap.

[0234] Therefore, the air moving upward through the outer side of the connection support platform 82 will pass through the outer side of the core support portion 350 located on the upper side of the connection support platform 82, thereby minimizing friction generated when the air moves, thereby improving air purification efficiency.

[0235] In another embodiment of the present invention, four or more core support portions 350 may be radially provided around the core member 310. Various modifications are possible, such as connecting the core support portion 350 to a separate ring-shaped edge member, and fixing the edge member to the outer shell 10.

[0236] The ball joint 360 is coupled to the core member 310 to rotatably support the discharge portion 140. Various modifications are possible within the scope of the technical concept described above. In one embodiment of the present invention, the end of the ball joint 360 has a spherical shape and can be coupled to the inner side of the discharge portion 140 to rotatably support the discharge portion 140. The upper side of the ball joint 360 is spherical, and the main body of the ball joint 360, which is in the shape of a rod and extends from the upper side of the spherical shape to the lower side, is inserted and fixed to the inner side of the core member 310 through a hole provided on the upper side of the core member 310. The ball joint 360 and the core member 310 can be fixed using various fixing methods, such as screw fastening, pin fastening, or adhesive fixing.

[0237] [Air flow from portable air purifiers]

[0238] The air flow state of the portable air purifier of this embodiment will be described.

[0239] Since the inlet portion 22 for sucking in external air is provided along the periphery of the first housing portion 20 , the air outside the first housing portion 20 moves toward the inside of the first housing portion 20 through the inlet portion 22 , thereby increasing the air intake flow rate.

[0240] By operating the diagonal flow fan module 70, air outside the portable air purifier 1 with the diagonal flow fan module flows into the interior of the portable air purifier 1 with the diagonal flow fan module. At this time, the air outside the portable air purifier 1 with the diagonal flow fan module forms a spiral air flow rotating around the periphery of the sterilization support portion 171 through the inlet hole 23 set to an inclined shape.

[0241] The air flowing into the inner side of the first shell 20 and rising in a spiral shape passes through the filter unit 40. In this process, physical particles such as dust, fine dust, ultrafine dust, odor particles, harmful gases and other chemical substances, as well as microorganisms such as bacteria / viruses contained in the air can be filtered out.

[0242] Since the filter unit 40 and the diagonal flow fan module 70 are arranged on a straight line in the vertical direction, efficient air intake and filtration can be achieved while minimizing flow loss.

[0243] The air that has passed through the filter 40 , that is, the purified air, can flow into the diagonal flow fan module 70 . The flow of the air can be guided by the bell mouth 132 , thereby smoothly guiding the air to flow into the diagonal flow fan module 70 .

[0244] The air flowing into the diagonal flow fan module 70 is discharged to the upper side of the diagonal flow fan module 70. The air discharged to the upper side of the diagonal flow fan module 70 can be discharged along the diagonal flow direction. Here, the diagonal flow direction can be defined as an upward diagonal direction.

[0245] The air drawn into the lower center of the diagonal flow fan module 70 moves upward in an inclined direction through the space between the hub 100 and the shroud 120 where the blades 110 are located.

[0246] In order to prevent the fan member 90 from rotating and moving to the rear of the fan member 90 (to Figure 6 A bell mouth 132 is provided to prevent a cyclonic phenomenon in which a portion of the air passing through the fan member 90 and the fan base 130 returns to the inlet of the fan member 90 via the space between the fan member 90 and the fan base 130. The bell mouth 132 surrounds the inlet protrusion 121 of the shroud 120 in a hemispherical shape and is provided at a predetermined distance from the inlet protrusion 121.

[0247] In addition, the second inclined surface 135 of the protruding rib 133 and the shield 120 are arranged in parallel, and the interval between the second inclined surface 135 and the shield 120 is formed as small as possible to prevent the cyclone phenomenon.

[0248] In addition, the first inclined surface 87 formed on the upper side of the inner guide portion 85 may be provided to be inclined at the same angle as the second inclined surface 135 , connecting the side support portion 84 and the protruding rib 133 .

[0249] Since the passage formed by the first inclined surface 87, the second inclined surface 135 and the shield 120 is smaller than the space formed between the fan member 90 and the side support portion 84, the fan member 90 moves to the rear of the fan member 90 (by Figure 6 The air on the upper side (based on the reference) is discharged to the upper side of the fan member 90 without generating a cyclone phenomenon.

[0250] Even if a portion of the air flows into between the second inclined surface 135 and the shield 120 , the passage between the bell mouth 132 and the inlet protrusion 121 is narrowed, thereby preventing the air from generating a whirlwind through the space between the bell mouth 132 and the inlet protrusion 121 .

[0251] On the other hand, the first inclined surface 87 extends obliquely toward the side support portion 84, thereby guiding the air moving toward the upper side of the fan housing 80 through the fan component 90 to move in an upward inclined manner along the first inclined surface 87, and then move to the upper side along the side support portion 84, thereby preventing the air from moving to the lower side of the first inclined surface 87 and generating a cyclone.

[0252] On the other hand, air discharged to the upper side of the diagonal flow fan module 70 flows from the lower side into the inner side of the discharge portion 140 and is discharged to the upper side of the discharge portion 140. The discharge portion 140 rotates within a set angle range, so the direction of the discharged air can be adjusted according to the installation angle of the discharge portion 140.

[0253] Furthermore, a concave groove is formed on the inner side of the discharge portion 140, thereby reducing the increase in discharge resistance of the air that has been redirected by the discharge portion 140. Furthermore, because the filter unit 40, the diagonal flow fan module 70, and the discharge portion 140 are arranged in a straight line in the vertical direction, efficient air intake, filtration, and discharge of purified air are achieved while minimizing air flow losses.

[0254] The diagonal flow fan module 70 of the present invention utilizes a diagonal flow fan, thereby maximizing blowing performance under constant pressure conditions when air is discharged in the axial direction. Furthermore, the fan base 130 maintains a constant distance from the fan member 90 to provide a cyclone prevention structure that extends to the inner wall of the fan housing 80, thereby minimizing flow losses caused by cyclones.

[0255] In addition, compared with other fan modules using fans of the same diameter, the diagonal flow fan module 70 is arranged in a customized manner on the inner side of the cylindrical shell portion 10, and there is no size increase caused by the fastening portion, thereby enabling the diagonal flow fan module and the portable air purifier having the diagonal flow fan module to be miniaturized.

[0256] As described above, the present invention has been described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments and drawings disclosed in this specification, and it is obvious that a person skilled in the art can make various modifications within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configurations of the present invention are not explicitly described when describing the embodiments of the present invention, the effects that can be predicted by the corresponding configurations should be recognized.

Claims

1. A diagonal flow fan module, wherein: include: A fan housing has an outer surface formed into a curved surface along a circumferential direction, and an operating space is formed inside the fan housing; a fan component rotatably disposed inside the fan housing; as well as A fan base is combined with the fan housing to guide air to flow in the direction of the fan component. The fan component comprises: a hub, located at the center of the fan housing and rotated by external power; a plurality of blades, one end of which is connected to the hub and arranged at equal intervals along the outer circumference of the hub; and The shield is connected to the other end of the fan blade and is arranged in a ring shape and is separated from the fan base. An inlet protrusion is formed on the lower side of the shield. The fan base comprises: a base plate having a plate shape extending in a ring shape and provided with a hollow at the center; and The bell mouth is arranged in an annular shape along the inner side of the base plate opposite to the hollow, forms a groove portion in a shape concave toward the upper side and surrounds the lower side of the inlet projection.

2. The diagonal flow fan module according to claim 1, wherein: The fan housing comprises: a support plate located in the center of the fan housing; A connecting support platform extending from the support plate toward the radially outer side of the support plate; and The side support portion is separated from the support plate and connected to the connection support platform, forming a circular curved surface along the periphery.

3. The diagonal flow fan module according to claim 2, wherein: The fan housing further includes a protrusion mounting groove portion, which is formed in a groove shape on the lower side of the side support portion and is used for connecting with a coupling protrusion provided on the fan base.

4. The diagonal flow fan module according to claim 2, wherein: The fan housing further includes an inner guide portion, which protrudes toward the inner side of the side support portion and has a first inclined surface whose inner diameter gradually decreases toward a direction where the fan base is provided.

5. The diagonal flow fan module according to claim 2, wherein: The fan housing further includes a wire guide continuously provided on the connection support platform for supporting the lower portion of the wire so that the wire can move along the side of the connection support platform.

6. The diagonal flow fan module according to claim 1, wherein: The outer diameter of the hub and the inner diameter of the shroud gradually decrease from the upper side toward the lower side.

7. The diagonal flow fan module according to claim 1, wherein: The hub comprises: a hub plate portion rotatably disposed on the inner side of the fan housing and located at the radial center of the fan housing; a shaft coupling portion, located in the center of the hub plate portion, protruding toward at least any one direction of the upper side and the lower side of the hub plate portion, and connected to the shaft to receive rotational power; an inner protrusion, arranged along an outer edge of the hub plate portion in an arc direction and extending upward; and The skirt portion extends obliquely upward from the outer side of the inner protruding portion.

8. The diagonal flow fan module according to claim 7, wherein: The hub further includes a first reinforcement protrusion, which is radially arranged with the shaft coupling portion as the center and forms a belt-shaped protrusion on the outer side of the shaft coupling portion.

9. The diagonal flow fan module according to claim 7, wherein: The hub further includes a second reinforcement protrusion extending in the up-down direction along the inner side surface of the inner protruding portion, and a lower side thereof has a band shape bent toward the shaft coupling portion and connected to the hub plate portion.

10. The diagonal flow fan module according to claim 7, wherein: The distance between the shield and the skirt gradually increases from the lower side toward the upper side.

11. The diagonal flow fan module according to claim 2, wherein: The inlet protrusion is a ring-shaped protrusion that extends downward and is spaced apart from the fan base by a predetermined distance.

12. The diagonal flow fan module according to claim 1, wherein: The fan base further includes a protruding rib, which is located radially outside the bell mouth, surrounds the periphery of the bell mouth and is arranged in a ring shape.

13. The diagonal flow fan module according to claim 12, wherein: The protruding rib is spaced apart from the shield and has a second inclined surface whose inner diameter gradually increases toward the upper side.

14. A portable air purifier having a diagonal flow fan module, wherein: include: A diagonal flow fan module includes a fan housing, a fan component, and a fan base. The outer surface of the fan housing is curved along the circumferential direction, an operating space is formed inside the fan housing, the fan component is rotatably disposed inside the fan housing, and the fan base is coupled to the fan housing to guide air to flow toward the fan component. a housing portion, the diagonal flow fan module being mounted on an inner side of the housing portion, a cylindrical inner flow path connected to the fan housing extending in an up-down direction, and an inlet portion for inhaling air being provided on a lower side of the diagonal flow fan module; and The filter part is located inside the shell part and is provided on at least one side of the lower side and the upper side of the diagonal flow fan module for purifying the air. The fan component comprises: a hub, located at the center of the fan housing and rotated by external power; a plurality of blades, one end of which is connected to the hub and arranged at equal intervals along the outer circumference of the hub; and The shield is connected to the other end of the fan blade and is arranged in a ring shape and is separated from the fan base. An inlet protrusion is formed on the lower side of the shield. The fan base comprises: a base plate having a plate shape extending in a ring shape and provided with a hollow at the center; and The bell mouth is arranged in an annular shape along the inner side of the base plate opposite to the hollow, forms a groove portion in a shape concave toward the upper side and surrounds the lower side of the inlet projection.

15. The portable air purifier with a diagonal flow fan module according to claim 14, wherein: The fan housing comprises: a support plate located in the center of the fan housing; A connecting support platform extending from the support plate toward the radially outer side of the support plate; and a side support portion, spaced apart from the support plate and connected to the connection support platform, forming a circular curved surface along the periphery; and The inner guide portion protrudes toward the inner side of the side support portion and has a first inclined surface whose inner diameter gradually decreases toward a direction where the fan base is provided.

16. The portable air purifier with a diagonal flow fan module according to claim 15, wherein: The fan base also includes: The protruding rib is located on the radial outer side of the bell mouth, surrounds the periphery of the bell mouth and is arranged in a ring shape.

17. The portable air purifier with a diagonal flow fan module according to claim 16, wherein: The protruding rib is separated from the shield and has a second inclined surface with an inner diameter gradually increasing toward the upper side. The first inclined surface and the second inclined surface form the same angle with the horizontal line.

Images