Blower

Abstract

To provide a blower.SOLUTION: The blower includes: a lower case in which a suction port is formed; a fan disposed inside the lower case and blowing air introduced through the suction port upward; a first tower extending upward from the lower case and formed with a first discharge port opening forward; a second tower separated from the first tower in a horizontal direction, extending upward from the lower case, and formed with a second discharge port opening forward; an air guide disposed inside the first tower, separated from a front end of the first tower, and extending in the front-rear direction toward the first discharge port; and a handle disposed between the fan and the air guide and extending on the upstream side of the air guide toward the front end of the first tower. The handle is disposed between the fan and the air guide, so that the blowing performance of the blower can be enhanced.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a blower, and more particularly to a blower with a handle.

[0002] Related Art This application claims priority under Article 4 of the Paris Convention based on Korean Patent Application No. 10-2021-0123234 (filing date: September 15, 2021; DAS: C123), and the present application is based on the contents disclosed in the Korean patent application. For reference, the contents of the specification, claims and drawings of the Korean patent application are incorporated herein by reference. [Background technology]

[0003] The blower can generate airflow to circulate air in the indoor space or to create an airflow toward the user. If the blower is equipped with a filter, the blower can supply filtered air to the indoor space.

[0004] The blower includes a case that forms an exterior and a fan that is disposed inside the case. When a user wants to change the location of the blower in an indoor space, the user can hold the case and carry the case to a desired location.

[0005] However, most conventional blowers do not have a separate handle for gripping the case, and even if a handle is provided, it is often located in a position that interferes with the direction of the airflow from the fan, resulting in a decrease in the blowing performance of the blower. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention is directed to solving the above-referenced problems and other problems.

[0007] Another object of the present invention may be to make the blower easy to transport.

[0008] Yet another object of the present invention can be to provide a blower with a handle for gripping the case.

[0009] Yet another object of the present invention may be to optimize the placement position of the handle.

[0010] Yet another object of the present invention can be to provide a blower with a handle for guiding the flow direction of air blown from the fan.

[0011] Yet another object of the present invention may be to provide a blower with improved air blowing performance.

[0012] Yet another object of the present invention may be to provide a blower in which flow loss of air blown from a fan is minimized.

[0013] The object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0014] In order to achieve the aforementioned objective, one embodiment of the blower of the present invention includes (comprises; constitutes; constructs; sets; contains; includes; contains) a lower case having an intake port formed therein, and a fan disposed inside the lower case for blowing air flowing in through the intake port upward.

[0015] The blower includes a first tower having a first outlet port extending upward from a lower case and opening forward, and a second tower spaced horizontally from the first tower and having a second outlet port extending upward from the lower case and opening forward.

[0016] The blower is disposed inside the first tower so as to be spaced apart from the front end of the first tower, and includes an air guide extending along the front-rear direction toward the first outlet, so that air blown from the fan can be guided to the first outlet by the air guide.

[0017] The blower is disposed between the fan and the air guide and includes a handle extending upstream of the air guide toward the front end of the first tower, making it easy to transport the blower and guiding air blown from the fan to the front end of the first tower.

[0018] The air inlets may be formed in a plurality of locations spaced apart from one another along the periphery of the lower case.

[0019] The handle may be located above the inlet.

[0020] The handle may extend through the lower case and protrude toward an internal space of the lower case.

[0021] The lower case may include a groove connecting a lower portion of the first tower and a lower portion of the second tower.

[0022] The groove may be formed by being recessed downward from an upper side of the fan.

[0023] The handle may be located between the fan and the groove.

[0024] The handle may include a guide wall that faces the fan in the up-down direction.

[0025] The guide wall may extend at an upward incline toward a front end of the first tower.

[0026] The handle may include a first wall spaced above the guide wall and extending toward an outside of the lower case.

[0027] The handle may include a second wall connecting the first wall and the guide wall and extending upwardly from the guide wall.

[0028] The blower may include a fan motor connected to the fan, and a fan motor housing surrounding the fan motor and spaced apart from an inner circumferential surface of the lower case.

[0029] Between the fan motor housing and the lower case, there is a channel through which air blown by the fan flows. (Hereinafter referred to as "channel") can be formed.

[0030] The handle may be located above the channel.

[0031] The width by which the handle protrudes inside the lower case may be smaller than the horizontal width of the channel.

[0032] The fan housing may include a first housing wall extending in a vertical direction, and a second housing wall connected to the first housing wall above the fan and extending at an angle toward the handle.

[0033] The blower may include a diffuser disposed above the fan and extending upwardly toward an interior space of the first tower.

[0034] The handle may be located above the diffuser.

[0035] The first tower may include a protrusion that protrudes from a front end of the first tower toward the first outlet.

[0036] The protrusion may be located between the air guide and a handle.

[0037] The protrusion may be located above the groove.

[0038] The protrusion may be located above an extension line of the guide wall.

[0039] The first outlet may extend long in the vertical direction.

[0040] The air guide may be arranged in a plurality of pieces spaced apart from each other along an extension direction of the first outlet port.

[0041] The air guide may extend from a rear end of the first tower toward a front end of the first tower.

[0042] One end of the air guide may be located forward of the first outlet port.

[0043] The air guide may extend so as to be inclined downward as it goes forward.

[0044] The angle at which each of the plurality of air guides is inclined downward may be greater for those disposed at the lower side.

[0045] The handle may include a gripping portion projecting downwardly from an upper wall of the handle.

[0046] The handle may include a mounting portion protruding downward from the guide wall.

[0047] The mounting portion may be connected to the lower case.

[0048] The handle may include a boss having a fastening groove extending in a vertical direction.

[0049] The boss may protrude into the groove.

[0050] The front end of the first tower may be inclined rearward as it approaches the upper end.

[0051] Further details of other embodiments are included in the detailed description and drawings.

[0052] The blower 1 may include a lower case 120 having an intake port 121, a fan 320 arranged inside the lower case 120, a fan motor 310 arranged above the fan 320, a first tower 220 arranged above the lower case 120, extending upwardly and having a first exhaust port 222, and a second tower 230 arranged above the lower case 120, spaced apart from the first tower 220, extending upwardly and having a second exhaust port 232.

[0053] The blower 1 may include a motor housing 330 spaced inside the lower case 120 and surrounding the fan motor 310 , and a diffuser 600 connecting the periphery of the motor housing 330 and the lower case 120 .

[0054] The blower 1 may include a supporter 620 that connects the lower portions of the surfaces 221e and 231e of the outer surfaces of the first tower 220 and the second tower 230, where the first tower 220 and the second tower 230 face each other, to the motor housing 330.

[0055] The blower 1 may further include a bridge 161 connecting lower portions of surfaces 221e and 231e of the outer surfaces of the first tower 220 and the second tower 230 where the first tower 220 and the second tower 230 face each other.

[0056] In the blower 1 , the supporter 620 can connect the bridge 161 and the motor housing 330 .

[0057] In the blower 1, the supporter 620 may include an extension 624 extending laterally from a lower portion of the supporter 620.

[0058] In the blower 1 , the extension 624 may be connected to the top of the motor housing 330 .

[0059] In the blower 1 , the extension 624 may have a cross-sectional area corresponding to the cross-sectional area of ​​the upper portion of the motor housing 330 .

[0060] In the blower 1, the cross-sectional area of ​​the supporter 620 may become narrower toward the upper side.

[0061] The blower 1 may further include a handle 170 that is disposed in a portion of the lower case 120 having a height corresponding to the supporter 620 and has one side protruding inward and the other side opening outward to form a gripping space 174.

[0062] In the blower 1, the supporter 620 can include a first surface 626a facing the handle 170, and a second surface 626b disposed on the opposite side to the first surface 626a.

[0063] In the blower 1, the first surface 6226a may be inclined toward the second surface 626b at a first predetermined angle s1.

[0064] In the blower 1, the second surface 626b of the supporter 620 may be inclined toward the first surface 626a at a predetermined second angle s2, and the first angle (s1) may be greater than the second angle s2.

[0065] The blower 1 may further include a blowing space S between the first tower 220 and the second tower 230, the blowing space S being open in the front and rear directions.

[0066] In the blower 1, the first tower 220, the second tower 230, and the blowing space S may form a continuous surface with the lower case 120.

[0067] In the blower 1, the continuous surface may be a truncated cone having a cross-sectional area that narrows toward the top.

[0068] In the blower 1, the first tower 220 may include a first inner wall 221e facing the second tower 230 and forming an inner surface of the first tower 220, and a first outer wall 221d forming an outer surface of the first tower 220.

[0069] In the blower 1, the second tower 230 may include a second inner wall 231e facing the first tower 220 and forming an inner surface of the second tower 230, and a second outer wall 231d forming an outer surface of the second tower 230.

[0070] In the blower 1, the bridge 161 may connect the lower portion of the first inner wall 221e and the second inner wall 231e.

[0071] In the blower 1, the bridge 161 can be recessed downwards.

[0072] In the blower 1, the supporter 620 can be connected to the bridge 161 near the center of the front and rear ends.

[0073] In the blower 1, the supporter 620 may include a first protrusion 622a extending upward from an upper portion of the supporter 620, and a second protrusion 622b extending upward from an upper portion of the supporter 620 and spaced apart from the first protrusion 622a.

[0074] In the blower 1, a portion of a bridge 161 may be inserted between the first protrusion 622a and the second protrusion 622b. Effect of the Invention

[0075] According to at least one of the embodiments of the present invention, the lower case is provided with a handle, which makes it easier to transport the blower.

[0076] According to at least one of the embodiments of the present invention, the handle is provided on the lower case, so that the handle is provided at a position that is easy for a user to grasp.

[0077] According to at least one embodiment of the present invention, the handle can be positioned between the fan and the air guide to enhance the blowing performance of the blower.

[0078] According to at least one embodiment of the present invention, the handle has a guide wall that is inclined toward the front end of the tower, thereby enabling the air blown by the fan to be guided toward the front end of the tower.

[0079] According to at least one of the embodiments of the present invention, the air guide and outlet are positioned close to the rear end of the tower, so that the air guided by the handle to the front end of the tower can be evenly diffused in the vertical direction.

[0080] The effects of the present invention are not limited to the effects described above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims. [Brief description of the drawings]

[0081] [Figure 1] FIG. 1 is a perspective view of a blower according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the PP′ line shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the QQ′ line shown in FIG. [Figure 4] FIG. 2 is a top perspective view of a blower according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a cross-sectional view of line RR′ shown in FIG. [Figure 6] FIG. 2 is a diagram for explaining the internal structure of a tower according to an embodiment of the present invention. [Figure 7] FIG. 2 is a diagram for explaining the internal structure of a tower according to an embodiment of the present invention. [Figure 8]FIG. 2 is an enlarged view of a portion of the internal structure of a blower according to an embodiment of the present invention. [Figure 9] FIG. 2 is a diagram illustrating a handle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0082] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or similar components are designated by the same reference numerals, and redundant description thereof will be omitted.

[0083] The suffixes "module" and "section" for components used in the following description are given or mixed for the sole consideration of ease of writing the specification, and do not have any meaning or role that is distinct from each other in themselves.

[0084] In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description will be omitted. Furthermore, the attached drawings are only for the purpose of making the embodiments disclosed in this specification easily understandable, and the technical ideas invented in this specification are not limited by the attached drawings, and it should be understood that the drawings include all modifications, equivalents, and alternatives included in the spirit and technical scope of the present invention.

[0085] Terms including ordinal numbers, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only to distinguish one component from another.

[0086] When a component is referred to as being "coupled" or "connected" to another component, it should be understood that it may be directly connected or connected to the other component, but that there may be other components in between. On the other hand, when a component is referred to as being "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0087] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0088] The overall structure of the blower 1 will be described first with reference to Fig. 1. Fig. 1 shows the overall appearance of the blower 1.

[0089] The blower 1 may be called an air conditioner, an air cleaner fan, an air purifier, or other names in that it draws in air and circulates the drawn air.

[0090] The blower 1 according to an embodiment of the present invention may include a suction module 100 through which air is drawn, and a blowing module 200 through which the drawn air is discharged.

[0091] The blower 1 may be in the shape of a column with a diameter that narrows toward the top, and the blower 1 may be in the shape of a cone or truncated cone as a whole. When the cross section narrows toward the top, the center of gravity is lowered, which is advantageous in that the risk of tipping over due to external impact is reduced. However, unlike the present embodiment, the cross section does not have to be narrow toward the top.

[0092] The suction module 100 may be formed so that the diameter gradually decreases toward the upper end, and the blower module 200 may also be formed so that the diameter gradually decreases toward the upper end.

[0093] The suction module 100 may include a base 110 , a lower case 120 disposed on the upper side of the base 110 , and a filter 130 disposed inside the lower case 120 .

[0094] The base 110 can be seated on the ground and can support the weight of the blower 1. The lower case 120 and the filter 130 can be seated on the upper side of the base 110.

[0095] The outer shape of the lower case 120 may be cylindrical, and a space may be formed inside in which the filter 130 is disposed. The lower case 120 may have an intake port 121 that opens toward the inside of the lower case 120. A plurality of intake ports 121 may be formed along the periphery of the lower case 120. Each of the plurality of intake ports 121 may extend in the vertical direction.

[0096] The filter 130 may have a cylindrical outer shape, and is capable of filtering out foreign matter contained in the air that flows in through the suction port 121 .

[0097] The blower module 200 may be arranged separately in the shape of two columns extending vertically. The blower module 200 may include a first tower 220 and a second tower 230 arranged to be spaced apart from each other. The blower module 200 may include a tower base 160 that connects the first tower 220 and the second tower 230 to the suction module 100. The tower base 160 may be arranged on the upper side of the suction module 100 and on the lower side of the first tower 220 and the second tower 230.

[0098] The tower base 160 may have a cylindrical outer shape, and may be disposed on the upper side of the suction module 100 to form a continuous outer peripheral surface with the suction module 100. The tower base 160 may be a part of the lower case 120. The lower case 120 may include the tower base 160.

[0099] The upper surface of the tower base 160 may be concave downward to form a groove 161 extending in the front-rear direction. The first tower 220 may extend upward from one side 161a of the groove 161, and the second tower 230 may extend upward from the other side 161b of the groove 161.

[0100] The tower base 160 may distribute the filtered air blown from the inside of the intake module 100 and provide the distributed air to the first tower 220 and the second tower 230, respectively.

[0101] The tower base 160, the first tower 220, and the second tower 230 may be manufactured from separate parts, or may be manufactured as a single unit. The tower base 160 and the first tower 220 may form a continuous outer circumferential surface of the blower 1, and the tower base 160 and the second tower 230 may form a continuous outer circumferential surface of the blower 1. The tower base 160 may be a part of the lower case 120. The first tower 220 and the second tower 230 may be referred to as an "upper case" disposed above the lower case 120.

[0102] Unlike this embodiment, the first tower 220 and the second tower 230 can be directly assembled to the suction module 100 without the tower base 160, or can be fabricated integrally with the suction module 100.

[0103] The first tower 220 and the second tower 230 may be disposed to be spaced apart from each other, and a blowing space S may be formed between the first tower 220 and the second tower 230.

[0104] The blowing space S can be understood as the space between the first tower 220 and the second tower 230 that is open to the front, rear and top.

[0105] The outer shape of the blower module 200 consisting of the first tower 220, the second tower 230, and the blowing space S may be a truncated cone.

[0106] The outlets 222, 232 formed in the first tower 220 and the second tower 230, respectively, can discharge air toward the blowing space S. When it is necessary to distinguish the outlets 222, 232, the outlet formed in the first tower 220 is referred to as the first outlet 222, and the outlet formed in the second tower 230 is referred to as the second outlet 232.

[0107] The first tower 220 and the second tower 230 may be arranged symmetrically based on the blowing space S. By symmetrically arranging the first tower 220 and the second tower 230, the flow is uniformly distributed in the blowing space S, which is more advantageous for controlling the horizontal airflow and the updraft.

[0108] The first tower 220 may include a first tower case 221 forming the outer shape of the first tower 220, and the second tower 230 may include a second tower case 231 forming the outer shape of the second tower 230. The first tower case 221 and the second tower case 231 are disposed above the lower case 120 and may be referred to as upper cases in which outlets 222 and 232 through which air is discharged are formed, respectively. The lower case 120 and the upper cases 221 and 231 may be included in the "case" and may be a subordinate concept of the case.

[0109] The first outlet 222 may extend vertically in the first tower 220, and the second outlet 232 may extend vertically in the second tower 230.

[0110] The flow direction of the air discharged from the first tower 220 and the second tower 230 may be formed in the front-rear direction.

[0111] The width of the blowing space S, which is the gap between the first tower 220 and the second tower 230, may be equal in the vertical direction. However, the upper end width of the blowing space S may be narrower or wider than the lower end width.

[0112] By forming the width of the blowing space S constant along the vertical direction, the air flowing forward of the blowing space S can be evenly distributed in the vertical direction.

[0113] When the width of the upper side is different from the width of the lower side, the flow velocity of the wider side may be low, and speed variations may occur depending on the vertical direction. When air flow velocity deviation occurs in the vertical direction, the amount of clean air supplied may vary depending on the vertical position where the air is discharged.

[0114] The air discharged from the first outlet 222 and the second outlet 232 join together in the blowing space S and can then be supplied to a user.

[0115] The air discharged from the first outlet 222 and the air discharged from the second outlet 232 do not flow to the user separately, but join together in the blowing space S and then can be supplied to the user.

[0116] The blowing space (S) is used as a space where the discharged air meets and mixes (□□). The discharged air discharged into the blowing space S forms an indirect airflow in the air around the blower 1, so that the air around the blower 1 can also flow toward the blowing space S.

[0117] The straightness of the discharged air can be improved by merging the discharged air from the first discharge port 222 and the discharged air from the second discharge port 232 in the blowing space S. By merging the discharged air from the first discharge port 222 and the discharged air from the second discharge port 232 in the blowing space S, the air around the first tower 220 and the second tower 230 can also be guided to flow forward along the outer circumferential surface of the blower module 200 by indirect airflow.

[0118] The first tower case 221 may include a first tower upper end 221a forming an upper side of the first tower 220, a first tower front end 221b forming a front side of the first tower 220, a first tower rear end 221c forming a rear side of the first tower 220, a first outer wall 221d forming an outer peripheral surface of the first tower 220, and a first inner wall 221e forming an inner side surface within the first tower 220.

[0119] The second tower case 231 may include a second tower upper end 231a forming an upper side of the second tower 230, a second tower front end 231b forming a front side of the second tower 230, a second tower rear end 231c forming a rear side of the second tower 230, a second outer wall 231d forming an outer peripheral surface of the second tower 230, and a second inner wall 231e forming an inner side of the second tower 230.

[0120] The first outer wall 221d and the second outer wall 231d are formed to be convex radially outward, and may form the outer circumferential surfaces of the first tower 220 and the second tower 230, respectively.

[0121] The first inner wall 221e and the second inner wall 231e are formed to be convex radially inward, and may form the inner circumferential surfaces of the first tower 220 and the second tower 230, respectively.

[0122] The first discharge port 222 can be formed in the first inner wall 221e to extend in the vertical direction and can be formed to open radially inward. The second discharge port 232 can be formed in the second inner wall 231e to extend in the vertical direction and can be formed to open radially inward.

[0123] The first discharge port 222 may be formed at a position closer to the first tower rear end 221c than the first tower front end 221b. The second discharge port 232 may be formed at a position closer to the second tower rear end 231c than the second tower front end 231b.

[0124] The first board slit 223, through which a first airflow converter 401 (see FIG. 5) described later penetrates, may be formed in the first inner side wall 221e extending in the vertical direction. The second board slit 233, through which a second airflow converter 402 (see FIG. 5) described later penetrates, may be formed in the second inner side wall 231e extending in the vertical direction. The first board slit 223 and the second board slit 233 may be formed to open toward the blowing space S.

[0125] The first board slit 223 may be formed at a position closer to the first tower front end 221b than the first tower rear end 221c. The second board slit 233 may be formed at a position closer to the second tower front end 231b than the second tower rear end 231c. The first board slit 223 and the second board slit 233 may be formed to face each other.

[0126] The internal structure of the blower 1 will be described below with reference to Fig. 2 and Fig. 3. Fig. 2 is a cross-sectional perspective view of the blower 1 cut along the PP' line shown in Fig. 1, and Fig. 3 is a cross-sectional perspective view of the blower 1 cut along the QQ' line shown in Fig. 1.

[0127] 2, a board assembly 150 that controls the operation of the fan assembly 300 may be disposed on an upper side of the base 110. A control space 150S in which the board assembly 150 is disposed may be formed on the upper side of the base 110.

[0128] The filter 130 may be disposed above the control space 150S. The filter 130 may have a cylindrical outer shape, and a cylindrical filter hole 131 may be formed inside the filter 130.

[0129] Air flowing in through the air inlet 121 can pass through the filter 130 and flow to the filter holes 131 .

[0130] A suction grill 140 may be disposed above the filter 130, through which air passing through the filter 130 and flowing upward passes. The suction grill 140 may be disposed between the fan assembly 300 and the filter 130. The suction grill 140 may prevent a user's hand from being inserted into the fan assembly 300 when removing the lower case 120 and removing the filter 130 from the blower 1.

[0131] The fan assembly 300 may be positioned above the filter 130 and may generate suction for air outside the blower 1 .

[0132] When the fan assembly 300 is driven, air outside the blower 1 passes through the inlet 121 and the filter hole 131 in sequence, and is then blown to the first tower 220 and the second tower 230 .

[0133] A pressurized space 300s in which the fan assembly 300 is disposed may be formed between the filter 130 and the blower module 200.

[0134] A first distribution space 220s may be formed inside the first tower 220, through which air passing through the pressurized space 300s flows upward, and a second distribution space 230s may be formed inside the second tower 230, through which air passing through the pressurized space 300s flows upward. The tower base 160 may distribute the air passing through the pressurized space 300s to the first distribution space 220s and the second distribution space 230s. The tower base 160 may be a channel that connects the first and second towers 220 and 230 and the fan assembly 300. The first distribution space 220s may refer to the internal space of the first tower 220. The second distribution space 230s may refer to the internal space of the second tower 230.

[0135] The first distribution space 220s may be formed between the first outer wall 221d and the first inner wall 221e. The second distribution space 230s may be formed between the second outer wall 231d and the second inner wall 231e.

[0136] The first tower 220 may include a first air guide 520 for guiding the flow direction of air within the first distribution space 220s. A plurality of first air guides 520 may be arranged vertically spaced apart from each other.

[0137] The first air guide 520 may extend from the rear end 221c of the first tower toward the front end 221b of the first tower. The first air guide 520 may be spaced rearward from the front end 221b of the first tower. The first air guide 520 may extend to be inclined downward toward the front. The angle at which each of the first air guides 520 is inclined downward may be smaller toward the upper side. This will be described in detail later.

[0138] The second tower 230 may include a second air guide 530 for guiding the flow direction of air within the second distribution space 230s. A plurality of second air guides 530 may be arranged vertically spaced apart from each other.

[0139] The second air guide 530 may extend from the rear end 231c of the second tower toward the front end 231b of the second tower. The second air guide 530 may be spaced rearward from the rear end 231b of the second tower. The second air guide 530 may extend to be inclined downward toward the front. The angle at which each of the second air guides 530 is inclined downward may be smaller toward the upper side. This will be described in detail later.

[0140] The first air guide 520 may guide the flow direction of the air discharged from the fan assembly 300 toward the first outlet 222. The second air guide 530 may guide the flow direction of the air discharged from the fan assembly 300 toward the second outlet 232.

[0141] Referring to FIG. 3, the fan assembly 300 may include a fan motor 310 that generates power, a fan motor housing 330 in which the fan motor 310 is housed, a fan 320 that rotates by receiving power from the fan motor 310, and a diffuser 340 that guides the air pressurized by the fan 320 upward.

[0142] The fan motor 310 may be disposed above the fan 320 and may be connected to the fan 320 via a motor shaft 311 extending downward from the fan motor 310 .

[0143] The fan motor housing 330 may include a first motor housing 331 that covers an upper portion of the fan motor 310 and a second motor housing 332 that covers a lower portion of the fan motor 310 .

[0144] The first outlet 222 may extend upward from one side 161a of the groove 161. The first outlet lower end 222d may be formed on one side 161a of the groove 161.

[0145] The first outlet 222 may be spaced apart from the lower side of the first tower upper end 221a. The first outlet upper end 222c may be spaced apart from the lower side of the first tower upper end 221a.

[0146] The first outlet 222 may extend so as to be inclined in the up-down direction. The first outlet 222 may be formed so as to be inclined toward the front as it goes toward the upper side. The first outlet 222 may extend so as to be inclined backward with respect to the up-down axis Z that extends in the up-down direction.

[0147] The first outlet front end 222a and the first outlet rear end 222b may extend so as to be inclined in the vertical direction and may extend so as to be parallel to each other. The first outlet front end 222a and the first outlet rear end 222b may extend so as to be inclined rearward as they go downward with respect to the vertical axis Z that extends in the vertical direction.

[0148] The first tower 220 may include a first discharge guide 225 that guides the air in the first distribution space 220s to the first discharge port 222.

[0149] The first tower 220 may be symmetrical to the second tower 230 based on the blowing space S, and may have the same shape and structure as the second tower 230. The above description of the first tower 220 may be similarly applied to the second tower 230.

[0150] The air discharge structure of the blower 1 for inducing the Coanda effect will be described below with reference to Figures 4 and 5. Figure 4 shows the shape of the blower 1 seen from above in a perspective view from the top, and Figure 5 shows the shape of the blower 1 cut open along the R-R' diagram shown in Figure 1 and seen from above.

[0151] Referring to FIG. 4, the distances D0, D1, and D2 between the first inner wall 221e and the second inner wall 231e may be smaller toward the center of the blowing space S.

[0152] The first inner wall 221e and the second inner wall 231e may be formed convexly toward the blowing space S, and a minimum distance D0 may be formed between the apexes of the first inner wall 221e and the second inner wall 231e. The minimum distance D0 may be formed at the center of the blowing space S.

[0153] The first outlet 222 may be formed rearward from the position where the shortest distance D0 is formed. The second outlet 232 may be formed rearward from the position where the shortest distance D0 is formed.

[0154] The first tower front end 221b and the second tower rear end 231b may be spaced apart by a first distance D1. The first tower rear end 221c and the second tower rear end 231c may be spaced apart by a second distance D2.

[0155] The first distance D1 and the second distance D2 can be the same. The first distance D1 can be greater than the shortest distance D0, and the second distance D2 can be greater than the shortest distance D0.

[0156] The distance between the first inner wall 221e and the second inner wall 231e may be small from the rear end 221c, 231c to a position where the shortest distance D0 is formed, and may be large from the position where the shortest distance D0 is formed to the front end 221b, 231b.

[0157] The first tower front end 221b and the second tower front end 231b may be formed to be inclined with respect to the longitudinal axis X.

[0158] A tangent drawn at each of the first tower front end 221b and the second tower shear end 231b may have a predetermined inclination angle A with respect to the longitudinal axis X.

[0159] A portion of the air discharged forward through the blowing space S can flow at the inclination angle A with respect to the longitudinal axis X.

[0160] By means of the above-mentioned configuration, the diffusion angle of the air discharged forward through the blowing space S can be increased.

[0161] The first airflow converter 401 may remain retracted into the first board slit 223 as air is expelled forward through the blowing space S.

[0162] The second airflow converter 402 may remain retracted into the second board slit 233 as air is expelled forward through the blowing space S.

[0163] Referring to FIG. 5, the air discharged toward the blowing space S may be guided in the flow direction by a first discharge guide 225 and a second discharge guide 235 .

[0164] The first discharge guide 225 may include a first inner guide 225a connected to the first inner side wall 221e and a first outer guide 225b connected to the first outer side wall 221d.

[0165] The first inner guide 225a can be manufactured integrally with the first inner wall 221e, but can also be manufactured as a separate piece.

[0166] The first outer guide 225b can be manufactured integrally with the first outer wall 221d, but can also be manufactured as a separate piece.

[0167] The first inner guide 225a may be formed to protrude from the first inner wall 221e toward the first distribution space 220s.

[0168] The first outer guide 225b may be formed to protrude from the first outer wall 221d toward the first distribution space 220s. The first outer guide 225b may be formed to be spaced apart from the outer side of the first inner guide 225a, and a first outlet 222 may be formed between the first outer guide 225b and the first inner guide 225a.

[0169] The radius of curvature of the first inner guide 225a may be smaller than the radius of curvature of the first outer guide 225b.

[0170] The air in the first distribution space 220s flows between the first inner guide 225a and the first outer guide 225b, and flows into the blowing space S through the first discharge port 222.

[0171] The second discharge guide 235 may include a second inner guide 235a connected to the second inner wall 231e and a second outer guide 235b connected to the second outer wall 231d.

[0172] The second inner guide 235a can be manufactured integrally with the second inner wall 231e, but can also be manufactured as a separate piece.

[0173] The second outer guide 235b can be manufactured integrally with the second outer wall 231d, but can also be manufactured in a separate piece.

[0174] The second inner guide 235a may be formed to protrude from the second inner wall 231e toward the second distribution space 230s.

[0175] The second outer guide 235b may be formed to protrude from the second outer wall 231d toward the second distribution space 230s. The second outer guide 235b may be formed to be spaced apart from the outer side of the second inner guide 235a, and a second discharge port 232 may be formed between the second outer guide 235b and the second inner guide 235a.

[0176] The radius of curvature of the second inner guide 235a may be smaller than the radius of curvature of the second outer guide 235b.

[0177] The air in the second distribution space 230s can flow between the second inner guide 235a and the second outer guide 235b and can flow to the blowing space S via the second outlet 232.

[0178] The widths w1, w2, and w3 of the first discharge port 222 may be formed to become smaller and larger from the inlet to the outlet of the first discharge guide 225.

[0179] The size of the inlet width w1 of the first discharge guide 225 can be made larger than the outlet width w3 of the first discharge guide 225.

[0180] The inlet 222i of the first outlet 222 may have an inlet width w1. The outlet 222o of the first outlet 222 may have an outlet width w3. The inlet 222i of the first outlet 222 may be located rearward of the outlet 222o. The air flowing into the first outlet 222 may flow forward from the inlet 222i to the outlet 222o.

[0181] The inlet width w1 may be defined as the distance between the outer end of the first inner guide 225a and the outer end of the first outer guide 225b. The outlet width w3 may be defined as the distance between the first outlet front end 222a, which is the inner end of the first inner guide 225a, and the first outlet rear end 222b, which is the inner end of the first outer guide 225b.

[0182] The entrance width w1 and the exit width w3 may be greater than the shortest width w2 of the first outlet 222.

[0183] The shortest width w2 can be defined as the shortest distance between the first outlet rear end 222b and the first inner guide 225a.

[0184] The width of the first discharge port 222 may gradually decrease from the entrance of the first discharge guide 225 to the position where the shortest width w2 is formed, and may gradually increase from the position where the shortest width w2 is formed to the exit of the first discharge guide 225.

[0185] The second discharge guide 235 may have a second discharge port front end 232 a and a second discharge port rear end 232 b formed therein, similar to the first discharge guide 225 , and may have the same width distribution as the first discharge guide 225 .

[0186] The arrangement of the air guide 500 will be described below with reference to Fig. 6. Fig. 6 shows the internal structure of the second tower 230 and the tower base 160 by cutting away a part of the case of the blower 1 shown in Fig. 1.

[0187] The air guide 500 may include a first air guide 520 disposed in the first tower 220 and a second air guide 530 disposed in the second tower 230. The first air guide 520 and the second air guide 530 may have the same structure and may be symmetrical to each other based on the blowing space S. The description of the second air guide 530 described below may be applied to the first air guide 520 as well.

[0188] The fan assembly 300 can cause air outside the blower 1 to flow into the lower case 120 through the suction port 121. The air that has flowed into the lower case 120 can flow into the pressurized space 300s through the filter hole 131. The lower case 120 can include a door 129, which can be attached to and detached from the lower case 120. When the door 129 is detached from the lower case 120, the filter 130 can be placed in a state in which it can be pulled out from inside the case.

[0189] The air flowing into the pressurized space 300s by the fan assembly 300 may flow into the second tower 230 through the second distribution space 230s. The air flowing into the second tower 230 may flow upward and may be guided in its flow direction by the second air guide 530.

[0190] The second air guide 530 may be disposed above the fan assembly 300 and may be disposed within the second distribution space 230s.

[0191] The second air guide 530 may be arranged in a plurality of pieces so as to be spaced apart from one another vertically. The number of the second air guides 530 is not limited, but may be up to four.

[0192] The second air guide 530 may extend in the front-rear direction from the second tower rear end 231c to the second tower front end 231b. The guide rear end 532 of the second air guide 530 may be connected to the second tower rear end 231c. The guide front end 531 of the second air guide 530 may be spaced rearward of the second tower front end 231b.

[0193] The second air guide 530 may be a plate extending in the horizontal direction and may have a curved shape. The guide inner end 533 of the second air guide 530 may be in contact with or connected to the second inner wall 231e. The guide outer end 534 of the second air guide 530 may be in contact with or connected to the second outer wall 231d. The second air guide 530 may be in the form of a curved plate extending between the second inner wall 231e and the second outer wall 231d.

[0194] The structure of the air guide 500 will be described in detail below with reference to Fig. 7. Fig. 7 shows the blower 1 shown in Fig. 6 as seen through from the side.

[0195] For ease of explanation, the air guide 500 will be explained below by taking the second air guide 530 as an example, but the explanation of the second air guide 530 can be applied to the first air guide 520 in the same manner.

[0196] The second air guide 530 may be disposed closer to the second tower rear end 231c than to the second tower front end 231b. The guide front end 531 may be spaced rearward of the second tower front end 231b, and the guide rear end 532 may be spaced forward of the second tower rear end 231c.

[0197] The second air guide 530 may be fixed to the second tower case 231 by connecting the guide rear end 532 to the second tower rear end 231c. The second air guide 530 may also be fixed to the second tower case 231 by connecting the guide inner end 533 and the guide outer end 534 to the second inner wall 231e and the second outer wall 231d, respectively.

[0198] A plurality of air guides 500 may be arranged so as to be spaced apart in the vertical direction. The air guides 500, 520, and 530 may include a first guide 530a, a second guide 530b arranged above the first guide 530a, a third guide 530c arranged above the second guide 530b, and a fourth guide 530d arranged above the third guide 530c.

[0199] The first guide 530a may refer to the air guide 500 disposed at the bottom among the plurality of air guides 500. The lower surface of the first guide 530a may face the fan assembly 300, and the upper surface of the first guide 530a may face the lower surface of the second guide 530b.

[0200] The second guide 530b may refer to an air guide 500 disposed adjacent to the first guide 530a among the multiple air guides 500. The lower surface of the second guide 530b may face the upper surface of the first guide 530a, and the upper surface of the second guide 530b may face the lower surface of the third guide 530c.

[0201] The third guide 530c may refer to an air guide 500 that is disposed adjacent to the fourth guide 530d among the multiple air guides 500. The lower surface of the third guide 530c may face the upper surface of the second guide 530b, and the upper surface of the third guide 530c may face the lower surface of the fourth guide 530d.

[0202] The fourth guide 530d may refer to the air guide 500 disposed at the top among the plurality of air guides 500. The lower surface of the fourth guide 530d may face the upper surface of the third guide 530c, and the upper surface of the fourth guide 530d may face the second tower upper end 231a.

[0203] The second guide 530b and the third guide 530c may also refer to the air guide 500 disposed between the first guide 530a and the fourth guide 530d.

[0204] The air guide 500 may be formed so as to be bent. Some of the air guides 500 may be formed so as to be convex upward. Some of the air guides 500 may extend so as to be inclined upward. Some of the air guides 500 may be formed so as to be flat. Some of the air guides 500 may be formed so as to be bent downward.

[0205] The first guide 530a may be formed so as to bend downward as it goes forward. The guide front end 531a of the first guide 530a may be located lower than the guide rear end 532a. The first guide 530a may extend from the tower rear end 231c toward the front so as to bend in the horizontal direction, and may bend downward as it goes forward. The tangent at the guide front end 531a of the first guide 530a may have a downward inclination angle θ1 with respect to the horizontal direction.

[0206] The second guide 530b may be formed in a convex shape on the upper side. The second guide 530b may extend from the tower rear end 231c in a bent manner toward the front, and may have a convex shape on the upper side. The guide front end 531b of the second guide 530b may be located below the guide rear end 532b. The tangent to the guide front end 531b of the second guide 530b may have a downward inclination angle θ2 with respect to the horizontal direction. The tangent to the guide rear end 532b of the second guide 530b may have a downward inclination angle α1 with respect to the horizontal direction.

[0207] The third guide 530c may be formed in a convex shape on the upper side. The third guide 530c may extend from the tower rear end 231c in a bent manner toward the front, and may have a convex shape on the upper side. The guide front end 531c of the third guide 530c may be located above the guide rear end 532c. A tangent to the guide front end 531c of the third guide 530c may have a downward inclination angle θ3 with respect to the horizontal direction. A tangent to the guide rear end 532c of the third guide 530c may have a downward inclination angle α2 with respect to the horizontal direction.

[0208] The fourth guide 530d may extend so as to be inclined upward. The fourth guide 530d may extend forward from the tower rear end 231c and may have a flat plate shape. The guide front end 531d of the fourth guide 530d may be located above the guide rear end 532d. The upper and lower surfaces of the fourth guide 530d may have an upward inclination angle θ4 with respect to the horizontal direction. The inclination angle θ4 of the fourth guide 530d may be kept constant in the front-rear direction.

[0209] The distances at which each of the air guides 530a, 530b, 530c, and 530d is spaced from the tower front end 231b may be different from each other.

[0210] The first guide 530a may be spaced apart from the tower front end 231b by a first distance G1. The second guide 530b may be spaced apart from the tower front end 231b by a second distance G2. The third guide 530c may be spaced apart from the tower front end 231b by a third distance G3. The fourth guide 530d may be spaced apart from the tower front end 231b by a fourth distance G4.

[0211] The lower the air guides 500 are located, the wider the intervals G1, G2, G3, and G4 between the air guides 500 and the tower front end 231b may be. The first interval G1 may be wider than the second interval G2, the second interval G2 may be wider than the third interval G3, and the third interval G3 may be wider than the fourth interval G4.

[0212] The second tower shear end 231b may extend so as to be inclined with respect to the vertical direction. The second tower front end 231b may extend so as to be inclined backward as it goes upward. The second tower shear end 231b may approach the vertical axis Z located at the center as it goes upward. The second tower front end 231b may have a backward inclination angle β1 with respect to the vertical direction.

[0213] The second tower rear end 231c may extend so as to be inclined with respect to the vertical direction. The second tower rear end 231c may extend so as to be inclined forward as it goes upward. The second tower rear end 231c may approach the vertical axis Z located at the center as it goes upward. The second tower rear end 231c may have a forward inclination angle β2 with respect to the vertical direction.

[0214] The second discharge port 232 may extend so as to be inclined with respect to the vertical direction. The second discharge port 232 may extend so as to be inclined forward as it goes upward. The second discharge port 232 may approach the vertical axis Z located at the center as it goes upward. The second discharge port 232 may extend so as to be aligned with the second tower rear end 231c. The second discharge port front end 232a and the second discharge port rear end 232b may extend so as to be aligned with each other.

[0215] The tower front end 231b, the tower rear end 231c, and the discharge port 232 are formed so as to be inclined, and the intervals G1, G2, G3, and G4 between the air guide 500 and the tower front end 231b become narrower toward the upper side, so that the air blown by the fan 320 can be smoothly guided to the discharge port 232 by the air guide 500. In addition, the tower front end 231b, the tower rear end 231c, and the discharge port 232 are formed so as to be inclined, and the intervals G1, G2, G3, and G4 between the air guide 500 and the tower front end 231b become narrower toward the upper side, so that the air discharged through the discharge port 232 can be uniformly distributed up and down.

[0216] More specifically, the air blown by the fan 320 has a higher pressure closer to the fan 320 and a lower pressure farther from the fan 320. This allows a wider gap between the air guide 500 located closer to the fan 320 and the front end 231b of the tower to guide a larger flow rate of air to diffuse upward and prevents the air discharged through the outlet 232 from concentrating at the bottom. In addition, a narrow gap is formed between the air guide 500 located farther from the fan 320 and the front end 231b of the tower to guide the air, whose flow rate decreases as it flows upward, to the outlet 232 by the air guide 500 without being separated.

[0217] The handle 170 will be described below with reference to Figure 8. Figure 8 is a vertical cross-sectional view of the blower 1, partially enlarged.

[0218] The blower 1 may include a handle 170 disposed between the fan 320 and the air guide 500. The handle 170 may extend upstream of the air guide 500 toward the first tower front end 221b.

[0219] The handle 170 may protrude toward an internal space of the lower case 120. The handle 170 may protrude toward an internal space of the tower base 160. An incision may be formed in an outer peripheral wall of the tower base 160, and the handle 170 may be inserted into the incision of the tower base 160.

[0220] The handle 170 may be disposed at the rear of the lower case 120. The handle 170 may be disposed closer to the tower rear end 221c than to the tower front end 221b. When the blower 1 is viewed from the front, the handle 170 may be hidden by the front portion of the lower case 120 and may not be visible.

[0221] The handle 170 may be disposed between the groove 161 and the fan 320. The handle 170 may be disposed in the interior space of the tower base 160 and may be disposed below the groove 161.

[0222] The handle 170 may include a first wall 171 extending forward toward the inside of the lower case 120, a guide wall 172 spaced apart from the lower side of the first wall 171, and a second wall 173 connecting the first wall 171 and the guide wall 172.

[0223] The first wall 171 can extend forward through the lower case 120. The first wall 171 can extend in the horizontal direction.

[0224] The guide wall 172 may extend in an upwardly inclined manner toward the front end 221b of the first tower 220. The guide wall 172 may have an inclination angle θ with respect to the horizontal direction. The guide wall 172 may be disposed above the fan 320 and may face the fan 320 in the up-down direction.

[0225] The second wall 173 may extend upward from the guide wall 172 and connect to the first wall 171. The second wall 173 may extend vertically.

[0226] The handle 170 may include a gripping space 174 recessed toward the radially inner side of the lower case 120. The gripping space 174 may be formed between a first wall 171 and a guide wall 172. A second wall 173 may block the front of the gripping space 174.

[0227] A channel 301 through which the air blown from the fan 320 flows may be formed between the fan motor housing 330 and the lower case 120. The channel 301 may provide a passage through which the air blown from the fan 320 flows upward.

[0228] The fan motor housing 330 may include a first housing wall 333 extending in the vertical direction, and a second housing wall 334 connected to the first housing wall 333 above the fan 320 and extending at an angle toward the handle 170.

[0229] The first housing wall 333 may be disposed to surround the fan motor 310. The first housing wall 333 may be spaced apart from the lower case 120.

[0230] The second housing wall 334 may extend so as to incline downward from the first housing wall 333. The second housing wall 334 may be inclined toward the inside in the radial direction of the lower case 120 as it extends downward.

[0231] The channel 301 may be formed between the fan motor housing 330 and the lower case 120. The channel 301 may be formed in the space between the first housing wall 333 and the lower case 120 and in the space between the second housing wall 334 and the lower case 120.

[0232] Between the second housing wall 334 and the lower case 120, the channel 301 may have a narrower horizontal width toward the upper side. This allows the air blown by the fan 320 to accelerate while passing through the flow path 301.

[0233] A diffuser 340 may be disposed between the first housing wall 333 and the lower case 120. The diffuser 340 may extend in the vertical direction. The diffuser 340 may guide the flow direction of the air that has flowed into the channel 301 upward.

[0234] The handle 170 may be disposed on an upper side of the channel 301. The handle 170 may be vertically opposed to the channel 301. The handle 170 may be disposed on an upper side of the diffuser 340.

[0235] The air blown by the fan 320 can pass through the channel 301 and reach the guide wall 172 of the handle 170. The air that reaches the guide wall 172 can flow along the inclined surface of the guide wall 172 toward the front end 221b of the first tower 220.

[0236] A width w1 of the handle 170 protruding into the internal space of the lower case 120 may be smaller than a width w2 of the channel 301. Therefore, a portion of the air that has passed through the channel 301 can flow upward without reaching the guide wall 172.

[0237] An acceleration channel 302 may be formed between the handle 170 and the fan motor housing 330. The acceleration channel 302 may be in communication with the channel 301. The acceleration channel 302 may refer to a space extending above the channel 301 toward the front end 221b of the first tower 220.

[0238] The fan motor housing 330 may include an edge 335 that faces the guide wall 172. The edge 335 may be formed on an upper portion of the fan motor housing 330. The edge 335 may refer to the upper end of the first housing wall 333.

[0239] The acceleration channel 302 may be formed between the edge 335 and the guide wall 172. The width w3 of the acceleration channel 302 may be less than the width w2 of the channel 301.

[0240] The air passing through the channel 301 may increase in flow velocity as it passes through the acceleration channel 302. The air passing through the channel 301 may be guided in its flow direction by the guide wall 172 and may increase in flow velocity as it passes through the acceleration channel 302. The air flowing along the guide wall 172 toward the front end 221b of the first tower may increase in flow velocity in the acceleration channel 302 and diffuse forward.

[0241] The first tower 220 may include a protrusion 228 that protrudes from the first tower front end 221b toward the first outlet 222. The protrusion 228 may be disposed between the air guide 500 and the handle 170. The protrusion 228 may be integral with the first tower front end 221b.

[0242] The protrusion 228 may be located above the groove 161. The protrusion 228 may be located above the extension line L of the guide wall 172.

[0243] The first tower 220 may include a lower guide 227 extending downward from the protrusion 228 and an upper guide 229 extending upward from the protrusion 228 .

[0244] The air flowing along the guide wall 172 toward the first tower front end 221b can reach the lower guide 227. The air that reaches the lower guide 227 can be guided rearward by the protruding portion 228 to reach the air guide 500. The air that reaches the air guide 500 can flow rearward along the air guide 500 and be discharged to the blowing space S through the first discharge port 222. However, the flow path of the air blown from the fan 320 is not limited to the above. For example, the air blown from the fan 320 can be immediately discharged through the first discharge port 222, can flow upward along the first distribution space 220s, can be guided forward by the guide wall 172 to reach the protruding portion 228, or can be guided forward by the guide wall 172 to reach the upper guide 229.

[0245] The air guide 500 may be inclined downward as it goes forward. The air guide 500 may be inclined toward the protrusion 228 as it goes forward. Air guided rearward by the protrusion 228 may reach a guide front end 501 of the air guide 500. The guide front end 501 may be located forward of the first outlet 222. The air that has reached the guide front end 501 may flow rearward along the air guide 500 and be discharged through the first outlet 222.

[0246] The detailed structure of the handle 170 will be described below with reference to Fig. 9. Fig. 9 shows an enlarged view of the handle 170 on a vertical cross-sectional view of the blower 1.

[0247] A gripping space 174 may be formed at the rear of the lower case 120. The gripping space 174 may refer to the space inside the handle 170. A user can carry the blower 1 by inserting his or her hands into the gripping space 174.

[0248] The handle 170 may include a grip portion 175 that protrudes downward from the first wall 171. The grip portion 175 may protrude downward from the lower surface of the first wall 171.

[0249] The grip portion 175 may include a first grip portion 175a that protrudes downward from the first wall 171, and a second grip portion 175b that extends from the first grip portion 175a so as to be inclined upward and forward.

[0250] A user can insert his / her hand into gripping space 174 and place his / her fingers on gripping portion 175. A user can place his / her fingers on the inclined surface of second gripping portion 175b.

[0251] A first fastening groove 175s that is open in the vertical direction may be formed in the grip portion 175. The grip portion 175 may be fixed to the handle 170 by a first fastening member 176 that passes through the first fastening groove 175s.

[0252] The handle 170 may include a mounting portion 177 that protrudes downward from the guide wall 172. The mounting portion 177 may be located inside the lower case 120.

[0253] The lower case 120 may include an end portion 120a disposed adjacent to the handle 170. The end portion 120a may extend so as to be bent toward the outside of the lower case 120 as it approaches the upper side.

[0254] The mounting portion 177 may be disposed inside the end portion 120a. The mounting portion 177 may be connected to the lower case 120 and may be connected to the end portion 120a. The mounting portion 177 may be coupled to the lower case 120 via a separate fastening member (not shown).

[0255] Since the mounting portion 177 is connected to the lower case 120 inside the lower case 120, the handle 170 can be prevented from being separated from the lower case 120.

[0256] The handle 170 may include a boss 178 that projects toward the groove 161. The boss 178 may project upwardly from the first wall 171.

[0257] The boss 178 may include a second fastening groove 178s that opens in the vertical direction. The handle 170 may be coupled to the groove 161 by a second fastening member 179 that is inserted into the second fastening groove 178s.

[0258] As described above, the tower base 160 may be disposed below the first tower 220 and the second tower 230, connect the first tower 220 and the second tower 230, and be disposed above the lower case 120. The internal space of the tower base 160 may be referred to as a distribution channel 160s. The distribution channel 160s may distribute the air that has passed through the pressurized space 300s to the first distribution space 220s and the second distribution space 230s. One end of the distribution channel 160s may be connected to the pressurized space 300s, and the other end may be connected to the first distribution space 220s and the second distribution space 230s.

[0259] Meanwhile, the above-mentioned groove may be called a bridge 161, which connects the first tower 220 and the second tower 230 separated by the blowing space S. As described above, the first inner wall 221e of the first tower 220 may extend upward from one side 161a of the bridge 161, and the second inner wall 231e of the second tower 230 may extend upward from the other side 161b of the bridge 161. The bridge 161 may connect the lower part of the first inner wall 221e and the second inner wall 231e. The bridge 161 may connect the lower part of the surfaces 221e and 231e of the first tower 220 and the second tower 230 facing each other among the outer surfaces of the first tower 220 and the second tower 230. The bridge 161 may connect the first inner wall 221e of the first tower 220 and the lower portion of the second inner wall 231e of the second tower 230 (see FIG. 1).

[0260] The bridge 161 may have a concave shape on the lower side as described above, so that the air flowing through the distribution channel 160s can smoothly flow along the concave surface of the bridge 161 to the first distribution space 220s and the second distribution space 230s.

[0261] Meanwhile, as described above, the blower 1 may have a conical or frustum shape as a whole (see FIG. 1). Therefore, the first tower 220, the second tower 230, and the blowing space S, which form a continuous surface with the lower case 120, may have a conical or frustum shape as a whole. That is, the continuous surface formed by the first tower 220, the second tower 230, and the blowing space S with the lower case 120 may have a cross-sectional area that is narrower toward the upper side.

[0262] Distances D0, D1, and D2 between the first inner wall 221e and the second inner wall 231e may be smaller as they approach the center of the blowing space S (see FIG. 4). The tower front ends 221b and 231b, the tower rear ends 221c and 231c, and the discharge ports 222 and 232 may be formed to incline toward the center on the plane cross section. The load of the first tower 220 and the second tower 230 may be concentrated at the central portion of the tower base 160 on the plane cross section.

[0263] Since the first tower 220 and the second tower 230 are spaced apart with the blowing space S therebetween, the loads of the first tower 220 and the second tower 230 can be concentrated on the lower portions of the first inner wall 221e and the second inner wall 231e.

[0264] Since the first outlet 222 and the second outlet 232 can extend long in the vertical direction, and the first tower 220 and the second tower 230 can extend long in the vertical direction, the blower 1 can be vulnerable to external forces that widen or narrow the first tower 220 and the second tower 230.

[0265] In response to such a need, a supporter 620 may be provided to transmit the load of the upper part of the blower 1 (particularly, the load concentrated on the inner walls 221e, 231e of the first tower 220 and the second tower 230) to the lower part of the blower 1. The supporter 620 will be described below with reference to Fig. 1, Fig. 8, and Fig. 9, particularly Fig. 8.

[0266] The supporter 620 can be disposed inside the tower base 160. The supporter 620 can be disposed spaced apart from the inner side of the tower base 160. The supporter 620 can be disposed near the center on a cross section inside the tower base 160. The supporter 620 can be disposed below the first tower 220 and the second tower 230. The supporter 620 can be disposed above the motor housing 330.

[0267] The supporter 620 can connect the bridge 161 and the motor housing 330. The supporter 620 can connect the lower portions of the opposing surfaces of the towers 230 (i.e., the first inner side wall 221e and the second inner side wall 231e) to the motor housing 330. The supporter 620 can transmit the load of the first tower 220 and the second tower 230 to the motor housing 330. The motor housing 330 can transmit the transmitted load to the lower case 120 via the diffuser 340 described above.

[0268] The supporter 620 can be connected to the vicinity of the center in the front-rear direction of the bridge 161. Therefore, the load concentrated on the center part on the plane cross section due to the shape of the blower 1 described above can be stably supported.

[0269] The supporter 620 may have a first protrusion 622a extending upward from an upper portion of the supporter 620 and a second protrusion 622b extending upward from an upper portion of the supporter 620 and spaced apart from the first protrusion 622a. The first protrusion 622a and the second protrusion 622b may face each other. The first protrusion 622a and the second protrusion 622b may have a symmetrical shape. The first protrusion 622a and the second protrusion 622b may be integrally formed with the supporter 620.

[0270] A portion of the bridge 161 may be inserted between the first protruding portion 622a and the second protruding portion 622b. The bridge 161 may be inserted between the first protruding portion 622a and the second protruding portion 622b and fastened to the supporter 620. The bridge 161 may include an insertion portion 161c that is inserted between the first protruding portion 622a and the second protruding portion 622b. The insertion portion 161c of the bridge 161 may have a shape that protrudes downward from the bridge 161.

[0271] The insertion portion 161c of the bridge 161 may have a shape corresponding to the space between the first protrusion 622a and the second protrusion 622b. The lower surface of the insertion portion 161c is fixed to the upper surface of the supporter 620 by a separate fastening member 650. The fastening member 650 may be, for example, a bolt that penetrates the lower surface of the insertion portion 161c and the upper surface of the supporter 620.

[0272] The supporter 620 may be generally columnar. The supporter 620 may include an extension 624 extending laterally from a lower portion of the supporter 620. The extension 624 may be connected to an upper portion of the motor housing 330. The cross-sectional area of ​​the extension 624 may correspond to the cross-sectional area of ​​the upper portion of the motor housing 330. In this case, the upper portion of the motor housing 330 may be understood as the extension 624 of the supporter 620. The edge 335 of the motor housing 330 may be understood as the outer end of the extension 624. The extension 624 with an expanded cross-sectional area is provided at the lower portion of the supporter 620, and the load transmitted from the upper portion can be stably transmitted to the motor housing 330.

[0273] The cross-sectional area of ​​the supporter 620 narrows toward the top, so that the load transmitted from the upper portion can be stably transmitted to the motor housing 330 while the area of ​​the supporter 620 in the distribution channel 160s is minimized to reduce the flow resistance.

[0274] Meanwhile, the fan motor housing 330 described above can be simply referred to as the motor housing 330. As described above, the motor housing 330 can be disposed inwardly and spaced apart from the lower case 120 to form the channel 301 therebetween. As described above, the motor housing 330 may be disposed to surround the fan motor 310. The diffuser 340 can be disposed between the motor housing 330 and the lower case 120 as described above. The diffuser 340 can connect the periphery of the motor housing 330 to the lower case 120. Therefore, the load transmitted from the supporter 620 to the motor housing 330 is transmitted to the lower case 120 by the diffuser 340.

[0275] Meanwhile, as described above, the handle 170 may protrude toward the internal space of the tower base 160. The tower base 160 may be manufactured integrally with the lower case 120, and the description of the lower case 120 related to the handle 170 above may be understood to refer to the tower base 160.

[0276] The handle 170 may be disposed at a portion of the tower base 160 having a height corresponding to the supporter 620. The supporter 620 may include a first surface 626a facing one surface (i.e., the second wall 173) of the handle 170 protruding into the internal space, and a second surface 626b disposed on the opposite side to the first surface 626a. For example, the first surface 626a may be the rear surface of the supporter 620, and the second surface 626b may be the front surface of the supporter 620. The first surface 626a may face the front surface of the tower base 160, and the second surface 626b may face the rear surface of the tower base 160 from the handle 170.

[0277] The first surface 626a may be inclined toward the second surface 626b at a predetermined first angle s1. The first angle may be the degree to which the first surface 626a is inclined toward the second surface 626b with respect to a virtual vertical line. The second surface 626b of the supporter 620 may be inclined toward the first surface 626a at a predetermined second angle s2. The second angle may be the degree to which the second surface 626b is inclined toward the first surface 626a with respect to a virtual vertical line. The first angle s1 may be greater than the second angle s2.

[0278] The more the handle 170 protrudes into the internal space of the tower base 160, the higher the flow resistance of the air flowing through the distribution channel 160s. Therefore, the first surface 626a of the supporter 620, which is the surface facing the handle 170, is formed to be inclined in accordance with the protruding direction of the handle 170 as described above, thereby preventing an increase in flow resistance due to the handle 170 in the distribution channel 160s.

[0279] The blower 1 includes a lower case 120 having an intake port 121, a fan 320 disposed inside the lower case 120, a fan motor 310 disposed above the fan 320, a motor housing 330 spaced apart inside the lower case 120 and surrounding the fan motor 310, a diffuser 600 connecting the periphery of the motor housing 330 to the lower case 120, a first tower 220 disposed above the lower case 120, extending long upward and having a first outlet 222, a second tower 230 disposed above the lower case 120, extending long upward and spaced apart from the first tower 220, and a supporter 620 connecting lower portions of surfaces 221e and 231e of the first tower 220 and the second tower 230 facing each other among the outer surfaces of the first tower 220 and the second tower 230 to the motor housing 330.

[0280] The blower 1 may further include a bridge 161 connecting the lower portions of the surfaces 221e, 231e of the outer surfaces of the first tower 220 and the second tower 230 where the first tower 220 and the second tower 230 face each other, and a supporter 620 may connect the bridge 161 and the motor housing 330.

[0281] In the blower 1, the supporter 620 may include an extension 624 extending laterally from a lower portion of the supporter 620, and the extension 624 may be connected to an upper portion of the motor housing 330).

[0282] In the blower 1 , the extension 624 may have a cross-sectional area corresponding to the cross-sectional area of ​​the upper portion of the motor housing 330 .

[0283] In the blower 1, the cross-sectional area of ​​the supporter 620 becomes narrower toward the upper side.

[0284] The blower 1 is disposed in a portion of the lower case 120 having a height corresponding to the supporter 620, with one surface protruding inward and the other surface opening outward to form a gripping space 174. The blower 1 may further include a handle 170, and the supporter 620 may include a first surface 626a facing the handle 170 and a second surface 626b disposed on the opposite side to the first surface 626a, and the first surface 626a may be inclined toward the second surface 626b at a predetermined first angle s1.

[0285] In the blower 1, the second surface 626b of the supporter 620 may be inclined toward the first surface 626a at a predetermined second angle s2, and the first angle (s1) may be greater than the second angle s2.

[0286] The blower 1 may further include a blowing space S between the first tower 220 and the second tower 230, the blowing space S being open in the front and rear directions, and the first tower 220, the second tower 230, and the blowing space S may form a continuous surface with the lower case 120.

[0287] In the blower 1, the continuous surface may be a truncated cone whose cross-sectional area narrows towards the top.

[0288] In the blower 1, the first tower 220 may include a first inner wall 221e facing the second tower 230 to form the inner surface of the first tower 220, and a first outer wall 221d forming the outer surface of the first tower 220, the second tower 230 may include a second inner wall 231e facing the first tower 220 to form the inner surface of the second tower 230, and a second outer wall 231d forming the outer surface of the second tower 230, and a bridge 161 may connect the first inner wall 221e and the lower part of the second inner wall 231e.

[0289] In the blower 1, the bridge 161 may be recessed downward.

[0290] In the blower 1, the supporter 620 can be connected to the bridge 161 near the center in the front-rear direction.

[0291] In the blower 1, the supporter 620 may include a first protrusion 622a extending upward from an upper portion of the supporter 620 and a second protrusion 622b extending upward from an upper portion of the supporter 620 and spaced apart from the first protrusion 622a, and a portion of the bridge 161 may be inserted between the first protrusion 622a and the second protrusion 622b.

[0292] Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and it goes without saying that various modifications can be made by a person having ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood separately from the technical ideas and perspectives of the present invention.

[0293] The present invention can be implemented in various forms, but the scope of the invention is not limited to the above-described embodiments. Therefore, if the modified embodiments include elements of the claims of the present invention, they should be considered to fall within the scope of the present invention.

[0294] The above-mentioned embodiments of the present invention or other embodiments are not mutually exclusive or distinct, and the above-mentioned embodiments of the present invention or other embodiments can be used together or combined with each other in their respective configurations or functions.

[0295] For example, it means that configuration A described in a specific embodiment and / or drawing can be combined with configuration B described in another embodiment and / or drawing. In other words, even if the combination between the configurations is not directly described, it means that the combination is possible unless it is described that the combination is impossible.

[0296] The above detailed description should not be construed as limiting in any respect, but should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. [Explanation of symbols]

[0297] 1: Blower 110: Bass 120: Lower case 160: Tower Base 170: Handle 220: First Tower 230: Second Tower 320: Fan 330: Fan motor housing 340: Diffuser 500: Air Guide

Claims

1. A blower, A lower case in which an intake port is formed and in which a fan is housed; a first tower extending upward from the lower case and having a first discharge port formed therein; a second tower that is horizontally spaced apart from the first tower, extends upward from the lower case, and has a second outlet formed therein; a blowing space formed between the first tower and the second tower, through which air discharged from the first outlet and the second outlet flows; a tower base disposed between the lower case and the first and second towers, the tower base distributing air from the lower case to the first and second towers; a fan motor housing that accommodates a fan motor therein, is spaced inwardly from the lower case, forms a channel therebetween, and allows air discharged from the fan to flow through the channel; a handle protruding inward from the tower base, disposed on the channel, aligning and disposing the blowing space in the vertical direction, and guiding the air that has passed through the channel to distribute it to the first tower and the second tower.

2. The first outlet and the second outlet are disposed adjacent to a rear end of the first tower and a rear end of the second tower, respectively; 2. The blower of claim 1, wherein the handle protrudes from a rear side of the tower base and includes a guide wall that faces the channel and extends at an angle upward.

3. 3. The blower of claim 2, wherein a width of the handle protruding inwardly from the tower base is smaller than a horizontal width of the channel.

4. An acceleration channel is formed between the handle and the fan motor housing, and the air passing through the channel is accelerated inwardly; 4. The blower of claim 3, wherein a width of the acceleration channel, the distance from the top of the fan motor housing to the guide wall of the handle, is less than a width of the channel.

5. the first tower has a first inner wall facing the blowing space; the second tower has a second inner wall facing the blowing space; the tower base includes a groove connecting a lower portion of the first inner wall and a lower portion of the second inner wall; 3. The blower of claim 2, wherein said groove is recessed downwardly.

6. The blower of claim 5 , wherein the handle is vertically disposed between the groove and the fan.

7. 7. The blower of claim 6, wherein the first tower and the second tower each include a protrusion protruding from a front end of the first tower and a front end of the second tower toward the first outlet and the second outlet.

8. The blower of claim 7 , wherein the protrusion is above the groove.

9. The blower according to claim 7 , wherein the protrusion is located above an extension of the guide wall.

10. Each of the first tower and the second tower is an upper guide extending along a vertical direction of the first tower and the second tower and disposed on the protrusion; a lower guide extending along a vertical direction of the first tower and the second tower and disposed below the protrusion; The blower according to claim 9 , wherein the protruding portion protrudes rearward beyond the upper guide and the lower guide.

11. The lower guide extends downward from a lower portion of the protruding portion to a front end of the first tower and a front end of the second tower, and is inclined.

11. The blower of claim 10, wherein the upper guide extends upward from a top of the projection to a front end of the first tower and a front end of the second tower and is inclined.

12. The blower according to claim 10 , wherein the lower guide is located above an extension of the guide wall.

13. The fan motor housing includes: a first housing wall extending in a vertical direction and surrounding an upper portion of the fan motor; a second housing wall connected to a rear end of the first housing wall and surrounding a lower portion of the fan motor, 6. The blower of claim 5, wherein the second housing wall presents an upwardly sloping surface toward the handle.

14. Further equipped with a supporter, 14. The blower of claim 13, wherein the supporter is disposed inside the tower base, connects the fan motor housing and the groove, and supports the first tower and the second tower.

15. the groove includes an insert; 15. The blower of claim 14, wherein the insert protrudes downward from the groove and is inserted into an upper portion of the supporter.

16. The blower according to claim 5 , wherein the handle is provided with a fastening groove extending in a vertical direction and a boss protruding toward the groove.

17. 3. The blower according to claim 2, wherein the handle includes a mounting portion that protrudes downward from the guide wall and is connected to the lower case.

18. 2. The blower of claim 1, wherein the handle includes a gripping portion projecting downwardly from an upper wall of the handle.

19. 2. The blower of claim 1, wherein a front end of the first tower is angled upwardly and rearwardly.

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