Blower

Abstract

The present invention relates to a blower. The blower of the present invention comprises: a lower case having an intake port formed around its circumference and an upper opening; a first tower extending upward from the lower case and having a first discharge port formed in a first wall that is open toward the front; a second tower extending upward from the lower case, spaced apart from the first wall, and having a second discharge port formed in a second wall facing the first wall that is open toward the front; a fan disposed in the lower case and flowing air introduced from the intake port toward the upper side where the first tower and the second tower are disposed; and a first airflow converter disposed in front of the first discharge port and disposed inside the first tower or protruding from the first wall in the direction where the second tower is disposed. and includes a second airflow converter positioned in front of the second discharge port, positioned inside the second tower, or protruding from the second wall in the direction in which the first tower is positioned, and each of the first airflow converter and the second airflow converter includes: a guide board positioned inside the first tower or the second tower, or protruding through the first wall or the second wall; an upper gear that rotates in engagement with the upper part of the guide board; a lower gear that rotates in engagement with the lower part of the guide board; a shaft connected to each of the upper gear and the lower gear and rotating together; and a motor connected to one of the upper gear and the lower gear to provide driving force.

Description

Technology Field

[0001] The present disclosure relates to a blower. In particular, the present disclosure relates to a blower capable of controlling the direction of airflow. Background Technology

[0002] Blowers can generate airflow to circulate air within an indoor space or form an airflow directed toward the user. Recently, much research has been conducted on the air discharge structure of blowers that can provide comfort to the user.

[0003] Direct airflow to the user can be provided through a blower, but in some cases, indirect airflow can be provided to the user to ensure comfort.

[0004] In this regard, Korean published patents KR2011-0099318, KR2011-0100274, KR2019-0015325, and KR2019-0025443 disclose a fan that blows air using a blower or the Coanda effect.

[0005] The blower disclosed in the aforementioned literature discloses a function that provides direct airflow to the user, and thus has a problem in that it cannot provide indirect airflow.

[0006] Furthermore, conventional blower devices disclose a method of controlling the direction by changing the arrangement of the entire structure to adjust the airflow direction. However, this structure, which controls the airflow direction by changing the arrangement of the entire structure, had problems such as difficulty in effectively and stepwise controlling the airflow direction or excessive power consumption. The problem to be solved

[0007] The problem that the present invention aims to solve is to provide a blower capable of implementing direct and indirect airflow.

[0008] Another objective of the present invention is to provide a blower that can change the arrangement of a guide board for controlling the airflow direction of the blower using a simple driving device.

[0009] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0010] To achieve the above objective, a blower according to an embodiment of the present invention comprises: a lower case having an intake port formed around its circumference and an upper side open; a first tower extending upward from the lower case and having a first discharge port formed in a first wall that is open toward the front; a second tower extending upward from the lower case, spaced apart from the first wall, and having a second discharge port formed in a second wall facing the first wall that is open toward the front; and a fan disposed in the lower case and flowing air introduced from the intake port toward the upper side where the first tower and the second tower are disposed, thereby allowing the air flowing upward by the fan to flow into the space between the first tower and the second tower. Additionally, the blower may include a first airflow converter positioned forward of the first discharge port and positioned inside the first tower or protruding from the first wall in the direction in which the second tower is positioned, and a second airflow converter positioned forward of the second discharge port and positioned inside the second tower or protruding from the second wall in the direction in which the first tower is positioned, thereby changing the wind direction of air flowing forward through the space between the first tower and the second tower.

[0011] Each of the first airflow converter and the second airflow converter comprises a guide board positioned inside the first tower or the second tower or protruding through the first wall or the second wall, an upper gear that rotates in engagement with the upper part of the guide board, a lower gear that rotates in engagement with the lower part of the guide board, a shaft connected to each of the upper gear and the lower gear and rotating together, and a motor connected to one of the upper gear and the lower gear to provide driving force, so that even if the guide board has a structure formed long in the vertical direction, the arrangement can be changed with only one driving motor.

[0012] The above airflow converter includes an upper guide that is fixedly positioned on the upper part of the guide board and engages with the upper gear to move the arrangement of the guide board, and a lower guide that is fixedly positioned on the lower part of the guide board and engages with the lower gear to move the arrangement of the guide board, so that the arrangement of the guide board can be changed according to the operation of the drive motor.

[0013] The above airflow converter can guide the movement of the guide board by including an upper support fixedly positioned inside the first tower or the second tower and limiting the range of movement of the upper guide; and a lower support fixedly positioned inside the first tower or the second tower and limiting the range of movement of the lower guide.

[0014] In the upper support, an upper shaft groove into which the upper end of the shaft is inserted is formed, and in the lower support, a lower shaft groove into which the lower end of the shaft is inserted is formed, and the shaft is rotatably positioned in each of the upper shaft groove and the lower shaft groove so that the shaft can rotate while stably fixed.

[0015] The upper guide comprises an upper board mount fixed to one side of the guide board, an upper board gear that engages with the upper gear and changes the position of the upper guide, and an upper guide rib connected to the upper support to guide the movement of the upper guide, wherein an upper guide groove is formed in the upper support to limit the range of movement of the upper guide rib, so that the upper guide can be mounted on the guide board and the guide board can be moved.

[0016] The upper board mounters are provided with a pair spaced apart in the vertical direction, and the upper gear is positioned between the pair of upper board mounters spaced apart in the vertical direction, so that the guide board can be moved while the upper guide is stably mounted on the guide board.

[0017] The upper support comprises an upper fixing body mounted on the inner side of the first tower or the second tower, and an upper fastening body coupled to the upper fixing body and having the driving motor mounted thereon, wherein the upper fixing body has an upper guide groove formed therein to guide the movement of the upper guide rib, and the upper guide groove forms a groove in the upward direction.

[0018] The lower guide comprises a lower board mounter fixed to the guide board at a position spaced downward from the upper guide, a lower board gear that engages with the lower gear and changes the position of the lower guide, and a lower guide rib connected to the lower support to guide the movement of the lower guide, wherein a lower guide groove is formed in the lower support to limit the range of movement of the lower guide rib, so that the lower guide can be mounted on the guide board and move the guide board.

[0019] The upper guide rib and the lower guide rib extend in different directions, and the upper guide groove and the lower guide groove each extend from the upper guide rib and the lower guide rib, thereby restricting the vertical movement of the guide board.

[0020] The upper guide rib includes an upper horizontal rib protruding in the direction in which the upper support is positioned from one side of the upper board mounter, and an upper vertical rib protruding in the upward direction from the end of the upper horizontal rib, and the lower guide rib includes a lower horizontal rib protruding in the direction in which the lower support is positioned from the lower end of the lower board mounter, and a lower vertical rib protruding in the up-and-down direction from the end of the lower horizontal rib, and the upper horizontal rib extends in a direction away from the guide board, and the lower horizontal rib extends in a direction closer to the guide board, so that the guide board can be moved stably.

[0021] The lower support member includes a lower fixing body mounted on the inner side of the first tower or the second tower, and the lower fixing body includes a lower support plate that supports the lower horizontal rib, thereby preventing the load of the guide board from being concentrated on the lower vertical rib.

[0022] The lower fixing body above includes a guide wall that prevents the lower guide rib from moving in a direction perpendicular to the direction of movement, thereby preventing the guide board from vibrating or moving in a direction perpendicular to the direction of movement.

[0023] A first board slit is formed in the first wall of the first tower through which the guide board of the first airflow converter passes, and a second board slit is formed in the second wall of the second tower through which the guide board of the second airflow converter passes. When the guide board of the first airflow converter is placed inside the first tower, the end of the guide board of the first airflow converter is placed in the first board slit. When the guide board of the first airflow converter is placed inside the first tower, the end of the guide board of the first airflow converter is placed in the first board slit, thereby preventing the air flowing forward along the first wall and the second wall from having its wind direction changed by the first board slit or the second board slit.

[0024] In the first wall, a first board slit is disposed through which the guide board of the first airflow converter penetrates in front of the first discharge port, and in the second wall, a second board slit is disposed through which the guide board of the second airflow converter penetrates in front of the second discharge port, and when the guide boards of the first airflow guide and the second airflow guide protrude from the first tower or the second tower, they can change the wind direction of the air flowing forward through the first discharge port or the second discharge port.

[0025] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0026] According to the blower of the present invention, one or more of the following effects are present.

[0027] First, it has the advantage of being able to provide indirect air to the user in addition to direct air by including a guide board that controls the wind direction of the air discharged forward through the first and second discharge ports.

[0028] Second, the guide boards are connected vertically to the shafts, allowing the arrangement of the guide boards to be changed using a single drive motor. This offers the advantage of stably changing the arrangement of the guide boards using a single motor, even when the simple guide boards are formed as long vertical structures.

[0029] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0030] FIG. 1 is a perspective view of a blower according to a first embodiment of the present disclosure. FIG. 2a is an example of operation when air is discharged in the first direction from the blower of FIG. 1. FIG. 2b is an example of operation when air is discharged in a second direction from the blower of FIG. 1. Fig. 3 is a front view of Fig. 1. Figure 4 is a plan view of Figure 1. Figure 5 is a cross-sectional view taken along V-V of Figure 3. Figure 6 is a cross-sectional view taken along VI-VI of Figure 4. Fig. 7 is a partially exploded perspective view showing the interior of the second tower of Fig. 1. Fig. 8 is a right-side view of Fig. 7. Figure 9 is a cross-sectional view taken along line IX-IX of Figure 3. Figure 10 is a cross-sectional view taken along X-X of Figure 3. FIG. 11 is a cross-sectional view taken along XI-XI of FIG. 3. FIG. 12 is a drawing for explaining an airflow converter disposed inside a first tower according to an embodiment of the present invention. FIG. 13 is an exploded perspective view of an airflow converter according to one embodiment of the present invention. FIG. 14 is a drawing for explaining the arrangement and connection relationship of the upper part of the guide board, the upper guide, and the upper support according to one embodiment of the present invention. FIG. 15 is a drawing for explaining an upper guide positioned above a guide according to one embodiment of the present invention. FIG. 16 is an exploded perspective view of an upper guide, an upper support, and a driving motor according to one embodiment of the present invention. FIG. 17 is a bottom perspective view of an upper support according to one embodiment of the present invention. FIG. 16 is a bottom perspective view of an upper support according to one embodiment of the present invention. FIG. 18 is a drawing for explaining the arrangement and connection relationship of the lower part of the guide board, the lower guide, and the lower support according to an embodiment of the present invention. FIG. 19 is a drawing for explaining a lower guide positioned below a guide according to one embodiment of the present invention. FIG. 20 is an exploded perspective view of a lower guide and a lower support according to one embodiment of the present invention. FIG. 21 is a plan view of a lower support according to one embodiment of the present invention. Specific details for implementing the invention

[0031] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0032] The direction indicators of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in FIGS. 1 to 12 are for the convenience of describing the invention and do not limit the scope of the invention. Therefore, if the reference is changed, the above directions may also be set differently.

[0033] Hereinafter, the present invention will be described with reference to the drawings for explaining a blower according to embodiments of the present invention.

[0034] <Overall Composition>

[0035] Referring to FIGS. 1 to 4, the blower (1) includes a case (100) that provides an external shape. The case (100) includes a lower case (150) in which a filter (200) is installed, and an upper case (140) that discharges air through the Coanda effect.

[0036] The upper case (140) includes a first tower (110) and a second tower (120) that are separated and arranged in the form of two pillars. The first tower (110) is positioned on the left side, and the second tower (120) is positioned on the right side.

[0037] The first tower (110) and the second tower (120) are spaced apart. A blowing space (105) is formed between the first tower (110) and the second tower (120). The blowing space (105) is open at the front, rear, and top.

[0038] The upper case (140), including the first tower, the second tower, and the blowing space, is formed in the shape of a truncated cone.

[0039] The discharge ports (117) and (127) respectively arranged in the first tower (110) and the second tower (120) discharge air into the blowing space (105). A first discharge port (117) is formed in the first tower (110), and a second discharge port (127) is formed in the second tower (120).

[0040] Each of the first discharge port and the second discharge port is formed in the first tower (110) and the second tower (120), respectively, at the location where the blowing space is formed. Air discharged through the first discharge port (117) or the second discharge port (127) can be discharged in a direction across the blowing space (105).

[0041] The air discharge direction of the air discharged through the first tower (110) and the second tower (120) can be formed in the front-rear direction and the up-down direction.

[0042] Referring to FIG. 2a, the air discharge direction across the blowing space (105) can be formed as a first air discharge direction (S1) arranged in a horizontal direction. Additionally, referring to FIG. 2b, the air discharge direction across the blowing space (105) can be formed as a second air discharge direction (S2) formed in an up-and-down direction.

[0043] Air flowing in the first air discharge direction (S1) can be defined as a horizontal airflow, and air flowing in the second air discharge direction (S2) can be defined as an upward airflow.

[0044] Horizontal airflow refers to a situation where the primary direction of air flow is horizontal, which can mean that a larger volume of air flows horizontally. Similarly, updraft refers to a situation where the primary direction of air flow is upward, which can mean that a larger volume of air flows upward.

[0045] The blowing space (105) is formed by the first tower (110) and the second tower (120). The blowing space (105) can be formed as the space between the faces of each of the first tower (110) and the second tower (120).

[0046] Air discharged from the first discharge port (117) of the first tower (110) and the second discharge port (127) of the second tower (120) is combined in the blowing space (105) and, after that, can flow forward or upward.

[0047] Due to the formation of a horizontal airflow caused by the Coanda effect occurring in the blowing space (105), indirect airflow is also generated in the outer walls (114) (124). Referring to FIG. 2a, the air behind the blowing space can also be flowed into the blowing space by the discharge air discharged into the blowing space (105).

[0048] The straightness of the discharged air can be improved by combining the discharged air from the first discharge port (117) and the discharged air from the second discharge port (127) in the blowing space. Additionally, by combining the discharged air from the first discharge port (117) and the discharged air from the second discharge port (127) in the blowing space, the air around the first tower and the second tower can also be indirectly flowed in the direction of air discharge.

[0049] Referring to FIG. 2a, the first air discharge direction (S1) is formed from the rear to the front, and referring to FIG. 2b, the second air discharge direction (S2) is formed from the lower side to the upper side.

[0050] Referring to FIG. 1, the upper end (111) of the first tower (110) and the upper end (121) of the second tower (120) are spaced apart for the second air discharge direction (S2). That is, the air discharged in the second air discharge direction (S2) does not cause interference with the case of the blower (1).

[0051] Referring to FIG. 1, for the first air discharge direction (S1), the front end (112) of the first tower (110) and the front end (122) of the second tower (120) are separated, and the rear end (113) of the first tower (110) and the rear end (123) of the second tower (120) are also separated.

[0052] The side facing the blowing space (105) in the first tower (110) and the second tower (120) is called the inner side, and the side not facing the blowing space (105) is called the outer side.

[0053] Referring to FIG. 4, the outer wall (114) of the first tower (110) and the outer wall (124) of the second tower (120) are arranged in opposite directions. The inner wall (or first wall, 115) of the first tower (110) and the inner wall (or second wall, 125) of the second tower (120) are arranged facing each other.

[0054] The first inner wall (115) is formed convexly toward the second tower, and the second inner wall (125) is formed convexly toward the first tower.

[0055] The first tower (110) and the second tower (120) are formed in a streamlined shape with respect to the direction of air flow.

[0056] The first inner wall (115) and the first outer wall (114) are formed in a streamlined shape with respect to the front-rear direction, and the second inner wall (125) and the second outer wall (124) are formed in a streamlined shape with respect to the front-rear direction.

[0057] Referring to FIG. 4, the first discharge port (117) is positioned on the first inner wall (115), and the second discharge port (127) is positioned on the second inner wall (125).

[0058] The first inner wall (115) and the second inner wall (125) are separated by the shortest distance (B0) at the central portion (115a) of the first inner wall (115) and the central portion (125a) of the second inner wall (125). The central portion (115a) of the first inner wall (115) may be an area located between the front end (112) and the rear end (113) of the first inner wall (115). Likewise, the central portion (125a) of the second inner wall (125) may be an area located between the front end (122) and the rear end (123) of the second inner wall (125).

[0059] Each of the first discharge port (117) and the second discharge port (127) is positioned further back than the central part (115a) of the first inner wall (115) and the central part (125a) of the second inner wall (125). That is, the first discharge port (117) is positioned between the central part (115a) of the first inner wall (115) and the rear end (113). The second discharge port (127) is positioned between the central part (125a) of the second inner wall (125) and the rear end (123).

[0060] As you move from the central part (125a) toward the rear, the distance between the first inner wall (115) and the second inner wall (125) increases. Also, as you move from the central part (125a) toward the front, the distance between the first inner wall (115) and the second inner wall (125) increases.

[0061] The distance between the front end (112) of the first tower (110) and the front end (122) of the second tower (120) is called the first distance (B1). The distance between the rear end (113) of the first tower (110) and the rear end (123) of the second tower (120) is called the second distance (B2).

[0062] The first separation distance (B1) and the second separation distance (B2) are formed to be longer than the shortest distance (B0). The first separation distance (B1) and the second separation distance (B2) may have the same length or be formed differently.

[0063] The closer the discharge port (117)(127) is positioned to the rear end (113)(123), the easier it is to control the airflow through the Coanda effect described later.

[0064] The inner wall (115) of the first tower (110) and the inner wall (125) of the second tower (120) directly provide the Coanda effect, and the outer wall (114) of the first tower (110) and the outer wall (124) of the second tower (120) can indirectly provide the Coanda effect.

[0065] The inner wall (115)(125) directly guides the air discharged from the discharge port (117)(127) to the front (112)(122). That is, the inner wall (115)(125) directly provides a horizontal airflow of the air discharged from the discharge port (117)(127).

[0066] Due to the air flow in the blowing space (105), indirect air flow also occurs in the outer walls (114)(124).

[0067] The outer walls (114)(124) induce a Coanda effect on the indirect airflow and guide the indirect airflow to the shear (112)(122).

[0068] The left side of the blowing space is blocked by the first inner wall (115), and the right side of the blowing space is blocked by the second inner wall (125), but the upper side of the blowing space (105) is open.

[0069] The airflow converter described below can convert the horizontal airflow passing through the blowing space into an upward airflow, and the upward airflow can flow toward the open upper side of the blowing space. The upward airflow can prevent the discharged air from flowing directly to the user and can actively convect the indoor air.

[0070] In addition, the width of the discharged air can be controlled through the flow rate of the air joined in the blowing space.

[0071] By forming the vertical length of the first discharge port (117) and the second discharge port (127) much longer than the horizontal width (B0, B1, B2) of the blowing space, the discharge air from the first discharge port and the discharge air from the second discharge port can be induced to join in the blowing space.

[0072] Referring to FIGS. 1 to 3, the case (100) of the blower (1) includes a lower case (150) in which a filter is detachably installed, and an upper case (140) positioned above the lower case (150) and supported by the lower case (150).

[0073] The upper case (140) includes the first tower (110) and the second tower (120).

[0074] A tower base (130) connecting the first tower (110) and the second tower (120) is positioned, and the tower base (130) is assembled into the lower case (150). The tower base (130) can be manufactured integrally with the first tower (110) and the second tower (120).

[0075] Unlike the present embodiment, the first tower (110) and the second tower (120) may be assembled directly to the lower case (150) without a tower base (130), or may be manufactured integrally with the lower case (150).

[0076] The lower case (150) forms the lower part of the blower (1), and the upper case (140) forms the upper part of the blower (1).

[0077] The blower (1) can draw in ambient air from the lower case (150) and discharge filtered air from the upper case (140). The upper case (140) can discharge air at a higher position than the lower case (150).

[0078] The blower (1) may have a column shape with a diameter that decreases towards the top. The blower (1) may have an overall cone or truncated cone shape.

[0079] Unlike the present embodiment, the blower (1) may include a form in which two towers are arranged. Also, unlike the present embodiment, it is not necessary for the cross-section to become narrower towards the top.

[0080] However, as in this embodiment, if the cross-section narrows toward the upper side, there is an advantage in that the center of gravity is lowered and the risk of tipping over due to external impact is reduced.

[0081] For ease of assembly, in this embodiment, the lower case (150) and the upper case (140) may be manufactured separately. Unlike this embodiment, the lower case (150) and the upper case (140) may be formed as a single unit. For example, the lower case and the upper case may be manufactured as a front case and a rear case in which the lower case and the upper case are manufactured as a single unit and then assembled.

[0082] The lower case (150) is formed such that its diameter gradually decreases as it goes toward the top. The upper case (140) is also formed such that its diameter gradually decreases as it goes toward the top.

[0083] The outer surfaces of the lower case (150) and the upper case (140) can be formed in a continuous manner. In particular, the bottom of the tower base (130) and the top of the lower case (150) are in close contact, and the outer surface of the tower base (130) and the outer surface of the lower case (150) can form a continuous surface.

[0084] To this end, the bottom diameter of the tower base (130) may be formed to be equal to or slightly smaller than the top diameter of the lower case (150).

[0085] The tower base (130) distributes air supplied from the lower case (150) and provides the distributed air to the first tower (110) and the second tower (120).

[0086] The tower base (130) connects the first tower (110) and the second tower (120). The blowing space (105) is positioned on the upper side of the tower base (130).

[0087] Additionally, a discharge port (117)(127) is positioned on the upper side of the tower base (130), and an upward airflow and a horizontal airflow are formed on the upper side of the tower base (130).

[0088] To minimize friction with the air, the upper side surface (131) of the tower base (130) is formed as a curved surface. In particular, the upper side surface is formed as a curved surface that is concave toward the lower side and extends in the front-rear direction. Referring to FIG. 2, one side (131a) of the upper side surface (131) is connected to the first inner wall (115), and the other side (131b) of the upper side surface (131) is connected to the second inner wall (125).

[0089] Referring to FIG. 4, when viewed from the top, the first tower (110) and the second tower (120) are symmetrical with respect to the centerline L-L'. In particular, the first discharge port (117) and the second discharge port (127) are arranged symmetrically with respect to the centerline L-L'.

[0090] The centerline L-L' is an imaginary line between the first tower (110) and the second tower (120), and in this embodiment, it is arranged in the front-rear direction and passes through the upper side surface (131).

[0091] Unlike the present embodiment, the first tower (110) and the second tower (120) may be formed in an asymmetrical shape. However, it is more advantageous for controlling horizontal and upward airflow if the first tower (110) and the second tower (120) are arranged symmetrically with respect to the centerline L-L'.

[0092] Referring to FIG. 1, FIG. 5, or FIG. 6, the blower (1) includes a filter (200) placed inside a case (100) and a fan device (300) placed inside the case (100) to flow air to an outlet (117) (127).

[0093] The filter (200) and the fan device (300) are placed inside the lower case (150). The lower case (150) is formed in the shape of a truncated cone and has an open top.

[0094] Referring to FIG. 5, the lower case (150) may be formed in a truncated cone shape and has an open upper side. A blower unit (200) including a filter (220) and a fan device (300) includes a lower case (150) arranged to surround the filter (220) and the fan device (300), and a plurality of suction ports (155) communicating the inner and outer sides of the lower case (150) are formed along the circumferential direction of the lower case (150).

[0095] A base (151) that rests on the ground may be disposed on the lower side of the lower case (150). The base (151) may be formed in a circular shape.

[0096] The lower case (150) may be formed in a truncated cone shape with an open upper and lower side. The lower case (150) may be manufactured by separating it into two parts, and the two parts may be assembled to form the truncated cone shape described above. The lower case (150) may be divided into a first lower case (150a) separated to one side of the blower (1) and a second lower case (150b) separated to the other side opposite to the one side. When either the first lower case (150a) or the second lower case (150b) or the whole is separated, the filter (200) placed inside the lower case (150) can be withdrawn.

[0097] In the lower case (150), a plurality of suction ports (155) formed vertically are spaced apart in the radial direction. However, unlike the embodiment, it is also possible to form suction ports in the lower case (150) in the form of a plurality of holes.

[0098] The filter (200) is formed in a cylindrical shape with an upper and lower hollow formed inside. The outer surface of the filter (200) is positioned to face the intake port (155) formed in the lower case (150).

[0099] Indoor air flows through the filter (200) from the outside to the inside, and in this process, foreign substances or harmful gases in the air can be removed.

[0100] The fan device (300) is positioned above the filter (200). The fan device (300) can flow air that has passed through the filter (200) to the first tower (110) and the second tower (120).

[0101] Referring to FIG. 5, the fan device (300) includes a fan motor (310) and a fan (320) rotated by the fan motor (310), and is placed inside a lower case (150).

[0102] The fan motor (310) is positioned above the fan (320), and the motor shaft of the fan motor (310) is connected to the fan (320) positioned below. A motor housing (330) in which the fan motor (310) is installed is positioned above the fan (320).

[0104] The motor housing (330) is shaped to enclose the entire fan motor (310). Because the motor housing (330) encloses the entire fan motor (310), it can reduce flow resistance with the air flowing from the lower side to the upper side.

[0105] Unlike the present embodiment, the motor housing (330) may be formed in a shape that surrounds only the lower part of the fan motor (310).

[0106] The motor housing (330) includes a lower motor housing (332) and an upper motor housing (334). At least one of the lower motor housing (332) and the upper motor housing (334) is coupled to the case (100).

[0107] After the fan motor (310) is installed on the upper side of the lower motor housing (332), the upper motor housing (334) may be covered to enclose the fan motor (310). The motor shaft of the fan motor (310) passes through the lower motor housing (332) and is assembled to the fan (320) positioned on the lower side.

[0108] The fan (320) may include a hub to which the shaft of the fan motor is coupled, a shroud spaced apart from the hub, and a plurality of blades connecting the hub and the shroud.

[0109] Air passing through the filter (200) is sucked into the shroud and then pressurized by the rotating blade to flow. The hub is positioned above the blade, and the shroud is positioned below the blade. The hub can be formed in a downwardly concave bowl shape, and the lower part of the lower motor housing (332) can be partially inserted.

[0110] A fan (320) is used as a centrifugal fan. The centrifugal fan draws in air at the center of the axis and discharges air radially, and the discharged air can be formed at an angle with respect to the axial direction.

[0111] Since the overall airflow flows from the bottom to the top, if air is discharged radially like a conventional centrifugal fan, significant flow loss occurs due to the change in flow direction.

[0112] A centrifugal fan can minimize airflow loss by discharging air radially upward.

[0113] Referring to FIG. 5, a diffuser (340) may be further disposed above the fan (320). The diffuser (340) guides the airflow from the fan (320) in an upward direction. The diffuser (340) can further reduce the radial component of the airflow and enhance the upward airflow component.

[0114] The motor housing (330) is placed between the diffuser (340) and the fan (320).

[0115] To minimize the vertical installation height of the motor housing, the bottom of the motor housing (330) is positioned to be inserted into the fan (320). The bottom of the motor housing (330) can be positioned to overlap the fan (320) in the vertical direction. Additionally, the top of the motor housing (330) can be positioned to be inserted into the diffuser (340). The top of the motor housing (330) can be positioned to overlap the diffuser (340) in the vertical direction.

[0116] The bottom of the motor housing (330) is positioned higher than the bottom of the fan (320), and the top of the motor housing (330) is positioned lower than the top of the diffuser (340).

[0117] To optimize the installation position of the motor housing (330), the upper side of the motor housing (330) may be placed inside the tower base (130), and the lower side of the motor housing (330) may be placed inside the lower case (150). Unlike the present embodiment, the motor housing (330) may be placed inside the tower base (130) or the lower case (150).

[0118] Referring to FIG. 5, an intake grille (350) may be placed inside the lower case (150). The intake grille (350) is intended to block the user's finger from entering the fan (320) side when the filter (200) is separated, thereby protecting the user and the fan (320).

[0119] A filter (200) is positioned on the lower side of the intake grille (350), and a fan (320) is positioned on the upper side. The intake grille (350) has a plurality of holes formed in the vertical direction to allow air to flow.

[0120] Referring to FIG. 5, a filter installation space (101) in which a filter (200) is placed is formed in the lower space of the intake grille (350) inside the case (100). Referring to FIG. 5, a blower space (102) in which air flows between the intake grille (350) and the discharge port (117) (127) is formed inside the case (100). Referring to FIG. 6, a discharge space (103) in which air flows upward and flows to the first discharge port (117) or the second discharge port (127) is formed inside the first tower (110) and the second tower (120). Here, the blower space (102) may include the discharge space (103).

[0121] Indoor air is introduced into the filter installation space (101) through the intake port (155), then passes through the blower space (102) and discharge space (103) and is discharged to the discharge port (117)(127).

[0122] Referring to FIGS. 5 to 8, an air guide (160) is arranged in the discharge space (103) to change the direction of air flow to a horizontal direction. Multiple air guides (160) may be arranged.

[0123] The air guide (160) redirects air flowing from the lower side to the upper side in a horizontal direction. The air guide (160) can guide air flowing upward in the direction where the first discharge port (117) or the second discharge port (127) is formed.

[0124] The air guide (160) may include a first air guide (161) placed inside the first tower (110) and a second air guide (162) placed inside the second tower (120).

[0125] Referring to FIG. 6, the first air guide (161) may be coupled to the inner wall and / or outer wall of the first tower (110). The first air guide (161) may be positioned such that the front end (161a) is close to the first discharge port (117), and the rear end (161b) is spaced apart from the rear end of the first tower (110).

[0126] To guide the air flowing from the lower side to the first discharge port (117), the first air guide (161) is formed with a convex curved surface from the lower side to the upper side, and the rear end (161b) is positioned lower than the front end (161a).

[0127] Referring to FIG. 6, at least a portion of the left end (161c) of the first air guide (161) may be in close contact with or coupled to the left wall of the first tower (110). At least a portion of the right end (161d) of the first air guide (161) may be in close contact with or coupled to the right wall of the first tower (110).

[0128] Accordingly, the air moving upward along the discharge space (103) flows from the rear end of the first air guide (161) to the front end.

[0129] The second air guide (162) is arranged symmetrically with respect to the first air guide (161). Accordingly, the configuration and shape of the second air guide (162), described as the second air guide (162), can also be applied to the first air guide (161).

[0130] Referring to FIGS. 7 and 8, the second air guide (162) may include a plurality of second air guides (162-1, 162-2, 162-3, 162-4) in the vertical direction. The second air guide (162) includes a second-1 air guide (162-1), a second-2 air guide (162-2), a second-3 air guide (162-3), and a second-4 air guide (162-4) spaced apart from the bottom to the top. The plurality of second air guides (162-1, 162-2, 162-3, 162-4) may be formed such that the length ratio formed relative to the length in the front-rear direction of the inner space of the second tower (120) increases as they are positioned higher. Multiple second air guides (162-1, 162-2, 162-3, 162-4) may have a shape in which the ratio of the curved surface formed in the front-rear direction decreases as they are positioned higher.

[0131] Referring to FIG. 6, the second air guide (162) may be coupled to the inner wall and / or outer wall of the second tower (110). Referring to FIG. 8, the second air guide (162) has a front end (162a) that is close to the second discharge port (127), and a rear end (162b) that is spaced apart from the rear end of the second tower (120).

[0132] To guide the air flowing from the lower side to the second discharge port (127), the second air guide (162) is formed with a convex curved surface from the lower side to the upper side, and the rear end (162b) is positioned lower than the front end (162a).

[0133] Referring to FIG. 6, at least a portion of the left end (162c) of the second air guide (162) may be in close contact with or coupled to the left wall of the second tower (120). At least a portion of the right end (162d) of the second air guide (162) may be in close contact with or coupled to the right wall of the first tower (110).

[0134] Next, referring to FIG. 5 or 8, the first discharge port (117) and the second discharge port (127) are arranged to extend vertically.

[0135] The first discharge port (117) is positioned between the front end (112) and the rear end (113) of the first tower (110). The first discharge port (117) is positioned closer to the rear end (113) than to the front end (112). Air discharged from the first discharge port (117) can flow along the first inner wall (115) by the Coanda effect. The air flowing along the first inner wall (115) can flow toward the front end (112).

[0136] Referring to FIG. 5, the first discharge port (117) includes a first border (117a) forming the edge on the air discharge side (front end in this embodiment), a second border (117b) forming the edge on the opposite side of the air discharge (rear end in this embodiment), an upper border (117c) forming the upper edge of the first discharge port (117), and a lower border (117d) forming the lower edge of the first discharge port (117).

[0137] Referring to FIG. 5, the first border (117a) and the second border (117b) are arranged parallel to each other. The upper border (117c) and the lower border (117d) may be arranged parallel to each other.

[0138] Referring to FIG. 5, the first border (117a) and the second border (117b) are positioned at an angle with respect to the vertical direction (V). Additionally, the rear end (113) of the first tower (110) is also positioned at an angle with respect to the vertical direction (V).

[0139] The inclination (a1) of the discharge port (117) can be formed to be greater than the inclination (a2) of the outer surface of the tower. Referring to FIG. 5, the inclination (a1) of the first border (117a) and the second border (117b) with respect to the vertical direction (V) can be formed at 4 degrees, and the inclination (a2) of the rear end (113) can be formed at 3 degrees.

[0140] The second discharge port (127) can be formed symmetrically with respect to the first discharge port (117).

[0141] Referring to FIG. 8, the second discharge port (127) includes a first border (127a) forming the edge on the air discharge side (front end in this embodiment), a second border (127b) forming the edge on the opposite side of the air discharge (rear end in this embodiment), an upper border (127c) forming the upper edge of the second discharge port (127), and a lower border (127d) forming the lower edge of the second discharge port (127).

[0142] Referring to FIG. 9, the first discharge port (117) of the first tower (110) is positioned to face the second tower (120), and the second discharge port (127) of the second tower (120) is positioned to face the first tower (110).

[0143] Air discharged from the first discharge port (117) flows along the inner wall (115) of the first tower (110) through the Coanda effect. Air discharged from the second discharge port (127) flows along the inner wall (125) of the second tower (120) through the Coanda effect.

[0144] The blower (1) further includes a first discharge case (170) and a second discharge case (180).

[0145] Referring to FIG. 9, a first discharge port (117) is formed in a first discharge case (170). The first discharge case (170) can be assembled to a first tower (110). A second discharge port (127) is formed in a second discharge case (180). The second discharge case (180) can be assembled to a second tower (120).

[0146] The first discharge case (170) can be installed to penetrate the inner wall (115) of the first tower (110). The second discharge case (180) can be installed to penetrate the inner wall (125) of the second tower (120).

[0147] A first discharge case (170) having a first discharge opening (118) formed therein is disposed in the first tower (110), and a second discharge case (180) having a second discharge opening (128) formed therein is disposed in the second tower (120).

[0148] Referring to FIG. 9, the first discharge case (170) forms a first discharge port (117) and includes a first discharge guide (172) disposed on the air discharge side of the first discharge port (117) and a second discharge guide (174) disposed on the opposite side of the air discharge of the first discharge port (117).

[0149] Referring to FIG. 10, the outer surfaces (172a) (174a) of the first discharge guide (172) and the second discharge guide (174) provide part of the inner wall (115) of the first tower (110).

[0150] The inner side of the first discharge guide (172) is positioned toward the first discharge space (103a), and the outer side is positioned toward the blowing space (105). The inner side of the second discharge guide (174) is positioned toward the first discharge space (103a), and the outer side is positioned toward the blowing space (105).

[0151] The outer surface (172a) of the first discharge guide (172) may be formed as a curved surface. The outer surface (172a) of the first discharge guide (172) may provide a surface continuous with the first inner wall (115). The outer surface (172a) of the first discharge guide (172) forms a curved surface continuous with the outer surface of the first inner wall (115).

[0152] The outer surface (174a) of the second discharge guide (174) may provide a surface continuous with the first inner wall (115). The inner surface (174b) of the second discharge guide (174) may be formed as a curved surface. The inner surface (174b) of the second discharge guide (174) forms a curved surface continuous with the inner surface of the first outer wall (115), thereby guiding the air of the first discharge space (103a) toward the first discharge guide (172).

[0153] A first discharge port (117) is formed between the first discharge guide (172) and the second discharge guide (174), and air from the first discharge space (103a) is discharged into the blowing space (105) through the first discharge port (117).

[0154] Air in the first discharge space (103a) is discharged between the outer surface (172a) of the first discharge guide (172) and the inner surface (174b) of the second discharge guide (174). A discharge channel (175) is formed through which air is discharged between the outer surface (172a) of the first discharge guide (172) and the inner surface (174b) of the second discharge guide (174).

[0155] The discharge channel (175) is formed with a narrower width in the middle section (175b) compared to the inlet (175a) and outlet (175c). The middle section (175b) can be defined as the part where the second border (117b) and the outer surface (172a) of the first discharge guide (172) form the shortest distance.

[0156] Referring to FIG. 10, the cross-sectional area of ​​the discharge channel (175) gradually narrows from the inlet to the middle section (175b), and then widens again from the middle section (175b) to the outlet (175c). The middle section (175b) is located inside the first tower (110). When viewed from the outside, the outlet (175c) of the discharge channel (175) may appear as the discharge port (117).

[0157] To induce a Coanda effect, the radius of curvature of the inner surface (174b) of the second discharge guide (174) may be formed larger than the radius of curvature of the outer surface (172a) of the first discharge guide (172).

[0158] The center of curvature of the outer surface (172a) of the first discharge guide (172) is located further forward than the outer surface (172a) and can be formed inside the first discharge space (103a). The center of curvature of the inner surface (174b) of the second discharge guide (174) is located on the side of the first discharge guide (172) and is formed inside the first discharge space (103a).

[0159] Referring to FIG. 10, the second discharge case (180) forms a second discharge port (127) and includes a first discharge guide (182) disposed on the air discharge side of the second discharge port (127) and a second discharge guide (184) disposed on the opposite side of the air discharge of the second discharge port (127).

[0160] A discharge channel (185) is formed between the first discharge guide (182) and the second discharge guide (184).

[0161] Since the second discharge case (180) is symmetrical to the first discharge case (170), a detailed description is omitted.

[0162] Referring to FIG. 4, air discharged from the first discharge port (117) can flow along the first inner surface (115) to the first shear (112), and air discharged from the second discharge port (127) can flow along the second inner surface (125) to the second shear (122).

[0163] The shortest distance (B0) between the first inner wall (115) and the second inner wall (125) can be determined to concentrate the discharge air forward through the Coanda effect.

[0164] As the shortest distance (B0) increases, the Coanda effect weakens, but a wide blowing space (105) can be secured, and as the shortest distance (B0) decreases, the Coanda effect strengthens, but the blowing space (105) becomes narrower.

[0165] The shortest distance (B0) can be formed to be 20mm to 30mm, and in this case, a width of 1.2m of airflow (left-right width) can be secured at a distance of 1.5m in front of the shear (112)(122).

[0166] In addition, the discharge angle (A) of the first inner wall (115) and the second inner wall (125) can be designed to limit the left and right diffusion range of the discharged air.

[0167] Referring to FIG. 4, the first inner wall (115) forms a convex curved surface toward the second inner wall (125) from the area where the first discharge port (117) is placed to the area where the first board slit (119) is placed. Additionally, the second inner wall (125) forms a convex curved surface toward the first inner wall (115) from the area where the second discharge port (127) is placed to the area where the second board slit (129) is placed.

[0168] Referring to FIG. 4, the discharge angle (A) can be defined as the angle between the centerline (L-L') of the first tower (110) and the second tower (120) and the tangent formed at the shear (112)(122) of the inner wall (115)(125).

[0169] Meanwhile, the blower (1) may further include an air flow converter (400) that changes the direction of air flow in the blowing space (105).

[0170] Airflow converter

[0171] Hereinafter, an airflow converter (400) capable of forming an upward airflow will be described with reference to FIGS. 9 to 21.

[0172] The airflow converter (400) can convert the horizontal airflow flowing through the blowing space (105) into an upward airflow.

[0173] The airflow converter (400) includes a first airflow converter (401) placed in the first tower (110) and a second airflow converter (402) placed in the second tower (120). The first airflow converter (401) and the second airflow converter (402) are symmetrical and may have the same configuration.

[0174] Air flowing through the blowing space (105) flows from the first discharge port (117) or the second discharge port (127) toward the front of the blowing space (105). That is, with respect to the blowing space (105), the portion where the first discharge port (117) and the second discharge port (127) are located can be set as the upstream portion of the blowing space (105), and the portion where the first guide board (411) and the second guide board (412) are located can be set as the downstream portion of the blowing space (105). Referring to FIG. 11, the guide board (410) includes a first guide board (411) located on the first tower (110) and a second guide board (412) located on the second tower (120).

[0175] The first guide board (411) is placed inside the first tower (110) and can optionally protrude into the blowing space (105). The second guide board (412) is placed inside the second tower (120) and can optionally protrude into the blowing space (105).

[0176] A first board slit (119) is formed on the inner wall (115) of the first tower (110), and a second board slit (129) is formed on the inner wall (125) of the second tower (120).

[0177] The first board slit (119) and the second board slit (129) are arranged symmetrically. The first board slit (119) and the second board slit (129) are formed by extending long in the vertical direction. Referring to FIG. 5, the first board slit (119) and the second board slit (129) may be arranged at an angle with respect to the vertical direction (V).

[0178] The inner end (411a) of the first guide board (411) may be exposed to the first board slit (119), and the inner end (412a) of the second guide board (412) may be exposed to the second board slit (129).

[0179] When the first guide board (411) is placed inside the first tower (110), the inner end (411a) of the first guide board (411) can be placed so as not to protrude from the inner wall (115). When the second guide board (412) is placed inside the second tower (120), the inner end (412a) of the second guide board (412) can be placed so as not to protrude from the inner wall (115).

[0180] Referring to FIG. 5, the first board slit (119) and the second board slit (129) can each be positioned at a greater angle than the front (112) of the first tower (110) or the front (122) of the second tower (120) with respect to the vertical direction.

[0181] For example, the shear (112) of the first tower (110) may be formed with a slope of 3 degrees, and the first board slit (119) may be formed with a slope of 4 degrees. Likewise, the shear (122) of the second tower (120) may be formed with a slope of 3 degrees, and the second board slit (129) may be formed with a slope of 4 degrees.

[0182] The first guide board (411) is positioned parallel to the first board slit (119), and the second guide board (412) is positioned parallel to the second board slit (129).

[0183] The guide board (410) can be formed in the shape of a flat or curved plate. The guide board (410) can be formed to extend vertically and can be positioned in front of the blowing space (105).

[0184] The guide board (410) can block the horizontal airflow flowing into the blowing space (105) and redirect it upward.

[0185] Referring to FIG. 11, the inner end (411a) of the first guide board (411) and the inner end (412a) of the second guide board (412) may come into contact or be close to each other to form an updraft. Unlike the present embodiment, one guide board (410) may be in close contact with the opposite tower to form an updraft.

[0186] As shown in FIG. 2a, when the blower (1) forms a horizontal airflow, the inner end (411a) of the first guide board (411) can close the first board slit (119), and the inner end (412a) of the second guide board (412) can close the second board slit (129).

[0187] By closing the first board slit (119) with the first guide board (411), the air of the first discharge space (103a) can be prevented from leaking into the first board slit (119). By closing the second board slit (129) with the second guide board (412), the air of the second discharge space (103b) can be prevented from leaking into the second board slit (129).

[0188] As shown in FIG. 2b, when the blower (1) forms an upward airflow, the inner end (411a) of the first guide board (411) can penetrate the first board slit (119) and protrude into the blowing space (105), and the inner end (412a) of the second guide board (412) can penetrate the second board slit (129) and protrude into the blowing space (105).

[0189] The first guide board (411) and the second guide board (412) protrude into the blowing space (105) by rotational movement. Unlike the present embodiment, at least one of the first guide board (411) and the second guide board (412) may be moved linearly in a sliding manner and protrude into the blowing space (105).

[0190] Referring to FIG. 11, the first guide board (411) and the second guide board (412) are formed in an arc shape. The first guide board (411) and the second guide board (412) form a predetermined radius of curvature, and the center of curvature may be located in the blowing space (105).

[0191] Hereinafter, with reference to FIGS. 11 to 21, the configuration of the airflow converter (400) is described based on the first airflow converter (401) placed in the first tower (110). The airflow converter (400) described below may also be applied to the second airflow converter (402). Each configuration of the airflow converter (400) described below may be divided into a 'first' configuration placed in the first tower (110) and a 'second' configuration placed in the second tower (120).

[0192] Referring to FIG. 13, the airflow converter (400) includes a guide board (410) positioned in a tower and protruding into a blowing space (105), a pair of board guides (420, 430) mounted on the guide board (410) and changing the position of the guide board (410), a pair of drive gears (440, 442) rotatably positioned inside the first tower (110) or the second tower (120) and engaged with the pair of board guides (420, 430), a shaft (444) connecting the pair of drive gears (440, 442), and a drive motor (470) connected to one of the pair of drive gears (440, 442) to provide driving force.

[0193] Referring to FIG. 13, the airflow converter (400) includes a pair of supports (450, 460) that are fixedly positioned inside the first tower (110) or the second tower (120) and guide the movement of each of the pair of board guides (420, 430). The pair of supports (450, 460) can contact the upper and lower ends of the shaft (444) respectively and support the rotation of the shaft (444). The airflow converter (400) may include a motor gear (472) that is connected to and rotates with a drive motor (470) and is positioned to mesh with one of the pair of drive gears (440, 442).

[0194] The guide board (410) may be concealed inside the tower or protrude into the blowing space (105). The guide board (410) may be formed of a transparent material.

[0195] Referring to FIG. 13, a pair of board guides (420, 430) includes an upper guide (420) positioned at the upper end of the guide board (410) and a lower guide (430) positioned at the lower end of the guide board (410). A pair of drive gears (440, 442) includes an upper gear (440) positioned to mesh with the upper guide (420) and a lower gear (442) positioned to mesh with the lower guide (430). A pair of supports (450, 460) includes an upper support (450) that guides the movement of the upper guide (420) and a lower support (460) that guides the movement of the lower guide (430).

[0196] Referring to FIG. 14, the upper guide (420) is connected to the upper support (450) and moves in mesh with the upper gear (440). Referring to FIG. 18, the lower guide (430) is connected to the lower support (460) and moves in mesh with the lower gear (442).

[0197] Referring to FIG. 15, the upper guide (420) includes an upper board mounter (422) that fixes the upper guide (420) to one side of the guide board (410), an upper board gear (424) that engages with the upper gear (440) and changes the position of the upper guide (420), and an upper guide rib (426) that is inserted into an upper guide groove (not shown) formed in the upper support (450) and guides the movement of the upper guide (420).

[0198] Referring to FIG. 15, the upper board mounter (422) extends in the upper and lower directions of the upper board gear (424). Upper connecting holes (422a, 422b) are formed in the upper board mounter (422) to be connected to the guide board (410). A pair of upper connecting holes (422a, 422b) may be provided that are spaced apart in the upper and lower directions. An upper board gear (424) is positioned between the pair of upper connecting holes (422a, 422b). An upper guide rib (426) is positioned between the pair of upper connecting holes (422a, 422b). The upper guide (420) and the guide board (410) can be connected through the pair of upper connecting holes (422a, 422b). Accordingly, the arrangement of the guide board (410) can be changed according to the movement of the upper guide (420). The upper board mounter (422) can be positioned on the upper and lower sides of the upper board gear (424).

[0199] Referring to FIG. 15, the upper board gear (424) extends downward from the upper board mounter (422), and a gear that meshes with the upper gear (440) is arranged on the opposite side facing the guide board (410). The gear formed on the upper board gear (424) may have the shape of a rack gear. That is, the upper board gear (424) and the upper gear (440) may have a rack and pinion structure. Accordingly, as the upper gear (440) rotates, the upper board gear (424) can move the arrangement of the guide board (410).

[0200] Referring to FIG. 15, the upper guide rib (426) may be positioned between the upper board mounter (422) and the upper board gear (424). The upper guide rib (426) may have a structure that protrudes from the surface where the upper board gear (424) is formed. The upper guide rib (426) includes an upper horizontal rib (426a) that protrudes in the direction in which the upper support (450) is positioned between the upper board gear (424) and the upper board mounter (422), and an upper vertical rib (426b) that protrudes upward from the end of the upper horizontal rib (426a). The upper vertical rib (426b) may be positioned to be inserted into the upper guide groove (not shown) of the upper support (450).

[0201] The upper vertical rib (426b) may have a curved shape having the same center of curvature as the center of curvature of the guide board (410) when viewed from the upper side.

[0202] An upper guide groove is formed in the upper support (450) to guide the movement of the upper guide rib (426). The upper support (450) is fixedly positioned on the inside of the first tower (110) or the second tower (120). Referring to FIG. 16, the upper support (450) may include an upper case mounter (454) fixed on the inside of the first tower (110) or the second tower (120).

[0203] Referring to FIG. 16, the upper support (450) includes an upper fixing body (452) mounted on the inside of the first tower (110) or the second tower (120), and an upper fastening body (456) coupled to the upper fixing body (452) and equipped with a driving motor (470).

[0204] The upper fixing body (452) and the upper connecting body (456) are combined with each other. The upper fixing body (452) is positioned on the upper side of the upper connecting body (456). The upper connecting body (456) includes an upper support plate (457) that supports the upper horizontal rib (426a) of the upper guider (420), and the upper fixing body (452) has an upper guide groove formed therein that guides the movement of the upper vertical rib (426b). The upper guide groove can limit the range of movement of the upper vertical rib (426b).

[0205] Referring to FIG. 16, a drive motor (470) is mounted on the lower side of the upper fastening body (456). The drive motor (470) is fixedly positioned on the lower side of the upper fastening body (456). Referring to FIG. 16 and FIG. 17, a motor mounting part (458) to which the drive motor (470) is fixed and an upper shaft mounting part (459) into which one end of the shaft (444) is inserted are arranged on the lower surface of the upper fastening body (456). The upper shaft mounting part (459) may have an upper shaft groove (459a) formed therein, into which the upper end of the shaft (444) is inserted and which can rotate.

[0206] An upper gear (440) is positioned at the upper end of the shaft (444). The upper gear (440) is fixedly positioned on the shaft (444). Therefore, when the upper gear (440) rotates, the shaft (444) can also rotate together.

[0207] Referring to FIG. 14, the shaft (444) may be positioned at a set angle (θ) with respect to a virtual axis (Z) formed perpendicular to the ground. The shaft (444) may be positioned at an angle corresponding to the direction in which the first board slit (119) or the second board slit (129) formed on the first inner wall (115) or the second inner wall (125), respectively, is formed.

[0208] The upper gear (440) is positioned to mesh with the motor gear (472) connected to the drive motor (470). Additionally, when the upper gear (440) rotates while meshing with the motor gear (472) on one side, it can change the position of the upper board gear (424) by meshing with the upper board gear (424) of the upper guide (420) on the other side. Additionally, when the upper gear (440) rotates while meshing with the motor gear (472), it can rotate the shaft (444) to rotate the lower gear (442) positioned at the lower end of the shaft (444).

[0209] Referring to FIG. 18, the lower guide (430) is connected to the lower support (460) and moves in mesh with the lower gear (442). The lower guide (430) is connected to the lower support (460) and moves in mesh with the lower gear (442).

[0210] Referring to FIG. 19, the lower guide (430) includes a lower board mounter (432) that fixes the lower guide (430) to one side of the guide board (410), a lower board gear (434) that engages with the lower gear (442) and changes the position of the lower guide (430), and a lower guide rib (436) that is inserted into a lower guide groove (462a) formed in the lower support (460) and guides the movement of the lower guide (430).

[0211] Referring to FIG. 19, the lower board mounter (432) extends in the vertical direction of the lower board gear (434). The lower board mounter (432) has a plurality of lower fastening holes (432a) formed therein to be connected to the guide board (410). The plurality of lower fastening holes (432a) can be arranged in the vertical direction relative to the lower board gear (434). The lower guide (430) and the guide board (410) can be fastened through at least one of the plurality of lower fastening holes (432a). Thus, the arrangement of the guide board (410) can be changed according to the movement of the lower guide (430). The lower board mounter (432) can be arranged on the upper and lower sides of the lower board gear (434).

[0212] Referring to FIG. 19, the lower board gear (434) can be positioned between a plurality of lower fastening holes (432a) formed in the vertical direction in the lower board mounter (432). A rack gear that meshes with the lower gear (442) is positioned on the opposite side of the lower board gear (434) facing the guide board (410). The lower board gear (434) and the lower gear (442) may have a rack and pinion structure. Accordingly, as the lower gear (442) rotates, the lower board gear (434) can move in the direction in which the lower board gear (434) is formed.

[0213] The lower guide rib (436) may extend from the lower part of the lower board mounter (432). The lower guide rib (436) may have a structure that extends to the opposite side of the surface where the lower board gear (434) is formed. That is, the upper guide rib (426) and the lower guide rib (436) have a structure that protrudes in opposite directions.

[0214] The lower guide rib (436) includes a lower horizontal rib (436a) protruding from the lower part of the lower board mounter (432) in the direction in which the lower support (460) is positioned, and a lower vertical rib (436b) protruding in the up and down direction from the end of the lower horizontal rib (436a). The lower horizontal rib (436a) protrudes in the direction of the guide board (410).

[0215] The lower vertical rib (436b) can be positioned to be inserted into the lower guide groove (462a) of the lower support (460). The lower vertical rib (436b) includes an upper rib (436b2) extending upward from the end of the lower horizontal rib (436a) and a lower rib (436b1) extending downward from the end of the lower horizontal rib (436a).

[0216] The lower vertical rib (436b) may have a curved shape having the same center of curvature as the center of curvature of the guide board (410) when viewed from the top.

[0217] Referring to FIGS. 20 and 21, the lower support member (460) has a lower guide groove (462a) formed to guide the movement of the lower guide rib (436). The lower guide groove (462a) may include a lower guide groove (462a) into which the lower rib (436b1) is inserted and an additional guide groove (not shown) into which the upper rib (436b2) is inserted.

[0218] The lower support (460) is fixedly positioned on the inside of the first tower (110) or the second tower (120). The lower support (460) may include a lower case mounter (464) fixed on the inside of the first tower (110) or the second tower (120).

[0219] The lower support (460) includes a lower fixing body (462) mounted on the inside of the first tower (110) or the second tower (120).

[0220] The lower fixing body (462) includes a lower support plate (465) that supports the lower horizontal rib (436a) of the upper guide (420). The lower fixing body (462) has a lower guide groove (462a) formed to guide the movement of the lower guide rib (436). The lower fixing body (462) includes a guide wall (463) that prevents the lower guide rib (436) from moving in a direction perpendicular to the direction of movement of the lower guide (430). The guide wall (463) is positioned opposite the lower shaft mounting part (466) with respect to the lower guide groove (462a). The guide wall (463) has a structure that protrudes upward corresponding to the height at which the upper rib (436b2) protrudes. Accordingly, when the lower guide rib (436) is inserted into the lower guide groove (462a), the lower rib (436b1) may be positioned in the lower guide groove (462a), and the upper rib (436b2) may be positioned facing the guide wall (463).

[0221] The upper guide rib (426) and the lower guide rib (436) can be extended in different directions.

[0222] Referring to FIG. 15, the upper horizontal rib (426a) of the upper guide rib (426) extends away from the guide board (410), and referring to FIG. 19, the lower horizontal rib (436a) of the lower guide rib (436) extends toward the guide board (410).

[0223] Additionally, referring to FIG. 15, the upper vertical rib (426b) of the upper guide rib (426) extends upward, and referring to FIG. 19, the lower vertical rib (436b) of the lower guide rib (436) extends downward. Specifically, the lower rib (436b1) of the lower vertical rib (436b) extends downward. Accordingly, the upper guide groove is formed upward, and the lower guide groove (462a) is formed downward.

[0224] The lower guide groove (462a) and the lower vertical rib (436b) can limit the range of movement. The lower fixing body (462) is provided with a lower shaft mounting part (466) into which the other end of the shaft (444) is inserted. The lower shaft mounting part (466) has a lower shaft groove (466a) formed therein, into which the lower end of the shaft (444) is inserted and can rotate.

[0225] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the patent claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0226] 100 : Case 105 : Blowing space 110: 1st Tower 115: Inner Wall, 1st Wall 117: First discharge port 119: First board slit 120 : 2nd Tower 125 : Inner Wall, 2nd Wall 127 : Second discharge port 129 : Second board slit 200 : Filter 400 : Airflow converter 401: 1st Airflow Converter 402: 2nd Airflow Converter 410 : Guide Board 420 : Upper Guider 426 : Upper guide rib 430 : Lower guide 436 : Lower guide rib 440 : Upper gear 442: Lower gear 444: Shaft 450 : Upper support 460 : Lower support 470 : Drive motor 472 : Motor gear

Claims

Claim 1 A lower case comprising a fan having an intake port formed around its perimeter and introducing air into the interior through the intake port; a first tower disposed above the lower case, comprising a first inner wall having a first discharge port formed therein and a first outer wall facing the first inner wall with respect to the interior space of the first tower; a second tower disposed above the lower case and spaced apart from the first tower, comprising a second inner wall facing the first inner wall having a second discharge port formed therein and a second outer wall facing the second inner wall with respect to the interior space of the second tower; and a blowing space formed between the first inner wall and the second inner wall, through which airflow discharged from the first discharge port and the second discharge port flows. A blower comprising: a blower comprising an airflow converter for controlling the direction of the discharge airflow of the blowing space, wherein the airflow converter comprises: a shaft rotatably disposed inside the first tower and the second tower and extending in the vertical direction; and a plate-shaped guide board extending in the vertical direction, wherein the guide board comprises a guide board disposed inside the first tower and the second tower and moving in the forward and backward direction by penetrating the first inner wall and the second inner wall by the rotation of the shaft. Claim 2 A blower according to claim 1, comprising: an upper support including an upper shaft mounting portion having an upper shaft groove into which the upper end of the shaft is rotatably inserted; and a lower support including a lower shaft mounting portion having a lower shaft groove into which the lower end of the shaft is rotatably inserted. Claim 3 A blower according to claim 2, comprising an upper guide fixed to the upper part of the guide board, wherein the upper support comprises an upper guide groove formed along the direction of movement of the guide board, and the upper guide comprises an upper vertical rib protruding in a vertical direction and moving along the upper guide groove. Claim 4 In claim 3, the upper vertical rib is a blower having a curved shape having the same center of curvature as the center of curvature of the guide board. Claim 5 In claim 3, the upper guider is a blower comprising an upper horizontal rib that extends from the guide board toward the upper support and has one end connected to the lower end of the upper vertical rib. Claim 6 In claim 3, the upper guider includes an upper board gear having a rack structure extending along the direction of movement of the guide board, and the shaft is a blower fixed to the upper gear which is positioned at a position corresponding to the upper board gear and engages with the rack to move the guide board. Claim 7 In claim 6, the upper support is a blower comprising a motor that transmits driving force to the upper gear. Claim 8 In claim 5, the upper support further comprises an upper support plate that supports the upper horizontal rib. Claim 9 A blower according to claim 2, comprising a lower guide fixed to the lower part of the guide board, wherein the lower support comprises a lower guide groove formed along the direction of movement of the guide board, and the lower guide comprises a lower vertical rib protruding in a vertical direction and moving along the lower guide groove. Claim 10 In claim 9, the lower vertical rib is a blower having a curved shape having the same center of curvature as the center of curvature of the guide board. Claim 11 In claim 9, the lower guide comprises a lower board gear having a rack structure extending along the direction of movement of the guide board, and the shaft is a blower fixed to the lower gear which is positioned at a position corresponding to the lower board gear and engages with the rack to move the guide board. Claim 12 In claim 11, the lower guide is a blower comprising a lower horizontal rib that protrudes in a horizontal direction and has a lower vertical rib formed at the end. Claim 13 In claim 12, the lower horizontal rib protrudes toward the guide board, and the lower support further comprises a lower support plate that supports the lower horizontal rib. Claim 14 In claim 13, the lower support plate is a blower formed between the lower shaft mounting portion and the lower guide groove. Claim 15 In claim 14, the lower vertical rib comprises: a lower rib extending downward from the end of the lower horizontal rib and inserted into the lower guide groove; and an upper rib extending upward from the end of the lower horizontal rib, and the lower support further comprises a guide wall protruding upwardly, positioned opposite to the lower shaft mounting portion with respect to the lower guide groove.

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