Blower

Abstract

To provide a blower with an air purification filter.SOLUTION: A blower may include an elongated lower body having a suction hole through which air passes, a fan disposed inside the lower body and causing a flow of air, and a filter disposed inside the lower body, positioned upstream of the fan and elongated in a longitudinal direction of the lower body. The longitudinal axis of the filter deviates from the longitudinal axis of the lower body.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a blower. In particular, the present disclosure relates to a blower provided with an air purification filter.

[0002] 〔Related Art〕 The present invention is accompanied by a claim of priority under Article 4 of the Paris Convention based on Korean Patent Application No. 10-2020-0066278 (filing date: June 2, 2020), Korean Patent Application No. 10-2020-0066279 (filing date: June 2, 2020), Korean Patent Application No. 10-2020-0066280 (filing date: June 2, 2020), Korean Patent Application No. 10-2020-0072338 (filing date: June 15, 2020), and Korean Patent Application No. 10-2020-0118174 (filing date: September 15, 2020), and is based on the content disclosed in the Korean patent application. For reference, the contents of the specification and drawings of the Korean patent application are incorporated into a part of the present specification.

Background Art

[0003] A blower can cause the flow of air and circulate the air in an indoor space or form an air current toward a user. In recent years, many studies have been conducted on the air discharge structure of blowers that can provide comfort to users.

[0004] Regarding this, as prior art, Patent Document 1 (Korean Patent Publication No. KR2011-0099318) and Patent Document 2 (Korean Patent Publication No. KR2020-0085846) disclose a blower that blows air using a blowing device or the Coandă effect.

[0005] On the other hand, a conventional blower is provided with an air purification filter. However, in fact, there is a lack of research on a solution to maximize the volume of the filter in the space where the filter is provided.

[0006] In addition, after separating the filter from the blower, a conventional blower proposes a grill as a configuration for blocking the user's finger from entering the inside of the fan. However, the fact is that there is not enough research on a solution that can reduce the increase in air flow resistance or noise generation due to the provision of the grill.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] The present disclosure aims to solve the above - mentioned problems and other problems.

[0009] Another object may be to provide a blower that can blow air using the Coandă effect.

[0010] Another object may be to provide a blower in which the installation and separation of the filter are easy.

[0011] Another object may be to provide a blower that can maximize the volume of the filter in the space where the filter is provided.

[0012] Another object may be to provide a blower that can minimize the air flow resistance from the filter to the fan.

[0013] Another object may be to provide a blower that can block the user's finger from entering the inside of the fan through the grill.

[0014] Yet another object may be to provide a blower that can reduce the increase in air flow resistance or noise generation by the grill.

[0015] Yet another object may be to provide a blower that can prevent the scattering of air through the gap between the fan and the bell mouth and minimize the re-inflow of the air discharged from the fan to the fan.

Means for Solving the Problems

[0016] According to one aspect of the present disclosure for achieving the above-described object, there is provided a blower including a lower body in which suction holes through which air passes are formed and which extends long, a fan disposed inside the lower body and causing air flow, and a filter disposed inside the lower body, located upstream of the fan, and extending long in the longitudinal direction of the lower body, wherein a longitudinal axis of the filter is eccentric with respect to a longitudinal axis of the lower body.

[0017] 〔One Aspect of the Present Invention〕 One aspect of the present invention is disclosed below. 〔1〕 A blower, comprising: a lower body in which suction holes through which air passes are formed and which extends long; a fan disposed inside the lower body and causing air flow; and a filter disposed inside the lower body, located upstream of the fan, and extending long in the longitudinal direction of the lower body, wherein a longitudinal axis of the filter is eccentric with respect to a longitudinal axis of the lower body. 〔2〕 further comprising columns extending in the longitudinal direction of the filter and disposed between an outer surface of the filter and an inner surface of the lower body, wherein the columns are in contact with an outer surface of the filter. The blower according to 〔1〕. 〔3〕 The blower according to [2], wherein the column is arranged within a range of 180 degrees in the circumferential direction of the filter with respect to the longitudinal axis of the filter. [4] The column a first column arranged behind the filter; a second column arranged on the left side of the filter; and a third column arranged on the right side of the filter, and is provided with the distance between the rear end of the second column and the rear end of the third column is smaller than the outer diameter of the filter, the distance between the front end of the second column and the front end of the third column is the same as or larger than the outer diameter of the filter, the blower according to [3]. [5] The blower according to [4], wherein the longitudinal axis of the filter is aligned with the longitudinal axis of the lower body in the front-rear direction and is arranged in front of the longitudinal axis of the lower body. [6] The filter is formed in a cylindrical shape, each of the second column and the third column is a support section extending in an arc, the curvature of the support section is the same as the curvature of the outer peripheral surface of the filter, and an entry section extending in a straight line, and is provided with the distance between the entry section of the second column and the entry section of the third column increases from the rear to the front, the blower according to [4]. [7] The blower according to [6], wherein a virtual straight line extending along the boundary between the entry section of the second column and the support section of the second column intersects the longitudinal axis of the lower body. [8] a base coupled to the lower body below the lower body and having a part disposed inside the lower body; and at least one holder provided on the upper side of the base to which the column is coupled, and is further provided with The filter and the column are arranged on the base, the blower according to [3]. 〔9〕 The base has a circular cross-section, The holder is aligned with the column in the radial direction of the base, the blower according to [8]. 〔10〕 The longitudinal axis of the lower body is coaxial with the longitudinal axis of the base and the rotation center axis of the fan, the blower according to [8]. 〔11〕 The column is, An outer wall facing the inner peripheral surface of the lower body, An inner wall facing the outer peripheral surface of the filter and coupled to the outer wall, and It is further provided with a cable disposed between the outer wall and the inner wall, partitioning the space between the outer wall and the inner wall into at least two sub-spaces and disposed in the at least two sub-spaces, the blower according to [3]. 〔12〕 It is further provided with a bell mouth disposed above the filter and forming a suction port for providing air to the fan, The filter is provided with holes formed through the filter in the vertical direction, The diameter of the suction port is smaller than the diameter of the holes, the blower according to [1]. 〔13〕 In the vertical direction, all regions of the suction port overlap the holes, the blower according to

[12] . 〔14〕 It is further provided with a grill coupled to the bell mouth below the bell mouth, the blower according to

[12] . 〔15〕 The bell mouth is formed while being recessed from the lower side to the upper side of the bell mouth, and further includes a groove to which the grill is coupled, The position of the lower end of the grill is the same as or higher than the position of the lower end of the bell mouth, the blower according to

[14] . 〔16〕 The bell mouth is formed in a ring shape, Further comprising a supporter that extends in the radial direction of the bell mouth from the outer peripheral surface of the bell mouth and to which the grill is coupled. The supporter is connected or coupled to the inner peripheral surface of the lower body, the blower according to

[14] . 〔17〕 The filter is formed in a cylindrical shape. The thickness of the filter is smaller than the distance between the inner end of the bell mouth and the outer end of the supporter, the blower according to

[16] . 〔18〕 The supporter An inner part that forms the inner end of the supporter and forms a step with respect to the bell mouth, and An outer part that forms the outer end of the supporter and forms a step with respect to the inner part, further comprising. The inner part faces the upper side of the filter. A trap is formed between the bell mouth, the inner part, the outer part, and the filter, the blower according to

[16] . 〔19〕 The bell mouth A first part that extends upward from the lower end of the bell mouth and forms the inner diameter of the bell mouth, and A second part that extends upward from the lower end of the bell mouth and forms the outer diameter of the bell mouth, further comprising. The lower end of the fan is disposed between the first part and the second part. The position of the lower end of the fan is lower than the positions of the upper end of the first part and the upper end of the second part, the blower according to

[16] . 〔20〕 The bell mouth Further comprising a protruding portion that protrudes upward from the upper end of the second part and extends along the circumferential direction of the bell mouth. The supporter is disposed below the protruding portion, the blower according to

[19] .

[0018] According to another aspect of the present disclosure, columns extending in the longitudinal direction of the filter are further provided between the outer surface of the filter and the inner surface of the lower body, and the columns can contact the outer surface of the filter.

[0019] According to another aspect of the present disclosure, the columns can be arranged within a range of 180 degrees in the circumferential direction of the filter with respect to the longitudinal axis of the filter.

[0020] According to another aspect of the present disclosure, the columns include a first column arranged behind the filter, a second column arranged on the left side of the filter, and a third column arranged on the right side of the filter. The distance between the rear ends of the second column and the third column is smaller than the outer diameter of the filter, and the distance between the front ends of the second column and the third column can be the same as or larger than the outer diameter of the filter.

[0021] According to another aspect of the present disclosure, the longitudinal axis of the filter can be aligned with the longitudinal axis of the lower body in the front-rear direction and arranged in front of the longitudinal axis of the lower body.

[0022] According to another aspect of the present disclosure, the filter is formed in a cylindrical shape, and each of the second column and the third column has a support section extending in an arc, where the curvature of the support section is the same as the curvature of the outer peripheral surface of the filter, and an entry section extending in a straight line. The distance between the entry sections of the second column and the third column can increase from the rear to the front.

[0023] Also, according to another aspect of the present disclosure, a virtual straight line extending along the boundary between the entry section and the support section of the second column can intersect the longitudinal axis of the lower body.

[0024] Also, according to another aspect of the present disclosure, further provided are a base coupled to the lower body below the lower body and having a part disposed inside the lower body, and at least one holder provided above the base to which the column is coupled, and the filter and the column can be disposed on the base.

[0025] Also, according to another aspect of the present disclosure, the base has a circular cross-section, and the holder can be aligned with the column in the radial direction of the base.

[0026] Also, according to another aspect of the present disclosure, the longitudinal axis of the lower body can be coaxial with the longitudinal axis of the base and the rotation center axis of the fan.

[0027] Also, according to another aspect of the present disclosure, the column further includes an outer wall facing the inner peripheral surface of the lower body, an inner wall facing the outer peripheral surface of the filter and coupled to the outer wall, and a cable disposed between the outer wall and the inner wall, partitioning the space between the outer wall and the inner wall into at least two sub-spaces, and disposed in the at least two sub-spaces.

[0028] Also, according to another aspect of the present disclosure, further provided is a bell mouth disposed above the filter and forming a suction port for providing air to the fan, the filter includes holes formed therethrough in the vertical direction, and the diameter of the suction port can be smaller than the diameter of the holes.

[0029] Also, according to another aspect of the present disclosure, in the vertical direction, all regions of the suction port can overlap with the holes.

[0030] Also, according to another aspect of the present disclosure, a grill coupled to the bell mouth may be further provided below the bell mouth.

[0031] Also, according to another aspect of the present disclosure, the bell mouth is formed while being recessed from the lower side to the upper side of the bell mouth, further includes a groove to which the grill is coupled, and the position of the lower end of the grill can be the same as or higher than the position of the lower end of the bell mouth.

[0032] Also, according to another aspect of the present disclosure, the bell mouth is formed in a ring shape, further includes a supporter that extends in the radial direction of the bell mouth from the outer peripheral surface of the bell mouth, and the supporter can be connected or coupled (connected or coupled) to the inner peripheral surface of the lower body.

[0033] Also, according to another aspect of the present disclosure, the filter is formed in a cylindrical shape, and the thickness of the filter can be smaller than the distance between the inner end of the bell mouth and the outer end of the supporter.

[0034] Also, according to another aspect of the present disclosure, the supporter further includes an inner part that forms the inner end of the supporter and forms a step with respect to the bell mouth, and an outer part that forms the outer end of the supporter and forms a step with respect to the inner part, the inner part faces the upper side of the filter, and a trap can be formed between the bell mouth, the inner part, the outer part, and the filter.

[0035] Also, according to another aspect of the present disclosure, the bell mouth further includes a first part that extends upward from the lower end of the bell mouth and forms the inner diameter of the bell mouth, and a second part that extends upward from the lower end of the bell mouth and forms the outer diameter of the bell mouth. The lower end of the fan is disposed between the first part and the second part, and the position of the lower end of the fan can be lower than the positions of the upper end of the first part and the upper end of the second part.

[0036] Also, according to another aspect of the present disclosure, the bell mouth further includes a protruding portion that protrudes upward from the upper end of the second part and extends along the circumferential direction of the bell mouth. The supporter can be disposed below the protruding portion.

Advantages of the Invention

[0037] The effects of the blower according to the present disclosure will be described as follows.

[0038] According to at least one of the embodiments of the present disclosure, a blower capable of blowing air by utilizing the Coandă effect can be provided.

[0039] According to at least one of the embodiments of the present disclosure, a blower that facilitates the installation and separation of a filter can be provided.

[0040] According to at least one of the embodiments of the present disclosure, a blower that can maximize the volume of the filter in the space where the filter is provided can be provided.

[0041] According to at least one of the embodiments of the present disclosure, a blower that can minimize the flow resistance of air from the filter toward the fan can be provided.

[0042] According to at least one of the embodiments of the present disclosure, a blower that can prevent a user's finger from entering the interior of the fan through the grill can be provided.

[0043] According to at least one of the embodiments of the present disclosure, a blower capable of reducing the increase in air flow resistance or noise generation by a grill can be provided.

[0044] According to at least one of the embodiments of the present disclosure, a blower capable of preventing the scattering of air through the gap between the fan and the bellows or minimizing the re-inflow of the air discharged from the fan to the fan can be provided.

[0045] The additional scope of the applicability of the present disclosure will become apparent from the following detailed description. However, various changes and modifications within the spirit and scope of the present disclosure can be clearly understood by those skilled in the art, so the detailed description and specific embodiments such as the preferred embodiments of the present disclosure should be understood as being given merely by way of example.

Brief Description of the Drawings

[0046]

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DETAILED DESCRIPTION OF THE INVENTION

[0047] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. However, regardless of the reference numerals in the drawings, the same or similar components are denoted by the same reference numerals, and duplicate descriptions thereof are omitted.

[0048] In describing the embodiments disclosed in this specification, if it is determined that a specific description of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. Also, the attached drawings are for the purpose of facilitating understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and should be understood to include any modifications, equivalents or alternatives included in the idea and technical scope of the present disclosure.

[0049] Terms including ordinal numbers such as first, second, etc. can be used to describe various components, but the above components are not limited by the above terms. The above terms are used only for the purpose of distinguishing one component from another.

[0050] The directional indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are for convenience of explanation, and the technical idea disclosed in this specification is not limited thereby.

[0051] As shown in FIG. 1, the blower (100, blower) can extend longitudinally in the vertical direction. The blower 100 can include a base 102, a lower body 110, a first upper body 120, and a second upper body 130.

[0052] The base 102 forms the lower surface of the blower 100 and can be placed at the bottom of the indoor space. The base 102 can be formed in a generally circular plate shape.

[0053] The lower body 110 can be disposed above the base 102. The lower body 110 can form the lower side surface of the blower 100. The lower body 110 can be formed in a generally cylindrical shape. For example, the diameter of the lower body 110 can become smaller from the lower part to the upper part of the lower body 110. As another example, the diameter of the lower body 110 can be maintained constant in the vertical direction. The suction holes 112 can be formed to penetrate the side surface of the lower body 110. For example, a plurality of suction holes 112 can be evenly arranged along the circumferential direction of the lower body 110. Thereby, air can flow into the blower 100 from the outside to the inside through the plurality of suction holes 112.

[0054] The upper bodies 120, 130 can be disposed above the lower body 110. The upper bodies 120, 130 can provide a flow path communicating with the internal space of the lower body 110.

[0055] For example, with reference to the drawings, the upper bodies 120, 130 can include a first upper body 120 and a second upper body 130 spaced apart from each other.

[0056] As another example, the upper bodies 120, 130 can be provided as a single upper body. In this case, the upper bodies 120, 130 can extend vertically long from above the lower body 110, or can be formed in the shape of a ring or an open ring in a circular, elliptical, or track shape. The position of the single upper body 120, 130 with respect to the lower body 110 can be determined in consideration of the shape of the upper bodies 120, 130, the position, shape, and number of the air discharge holes formed in the upper bodies 120, 130, etc.

[0057] Hereinafter, for the sake of brief description, the case where the upper bodies 120 and 130 include a first upper body 120 and a second upper body 130 will be described as a reference. And the description thereof can be similarly applied to the case where the upper bodies 120 and 130 are provided as a single upper body, unless the description is applicable only when the number of the upper bodies 120 and 130 is two.

[0058] The first upper body 120 and the second upper body 130 can be disposed above the lower body 110. The first upper body 120 and the second upper body 130 can form the upper part of the side surface of the blower 100. The first upper body 120 and the second upper body 130 can extend long in the vertical direction and be spaced apart from each other in the horizontal direction. The space 109 is formed between the first upper body 120 and the second upper body 130 and can provide an air flow path. On the other hand, the space 109 can be referred to as a blowing space, a valley, or a channel. On the other hand, the first upper body 120 can be referred to as the first tower, and the second upper body 130 can be referred to as the second tower.

[0059] The first upper body 120 can be spaced apart from the second upper body 130 to the left. The first upper body 120 can extend long in the vertical direction. The first boundary surface 121 of the first upper body 120 can face the space 109 and partition a part of the boundary of the space 109. The first boundary surface 121 of the first upper body 120 can be a curved surface bulging to the right, that is, in the direction from the first upper body 120 toward the space 109. The first outer surface 122 of the first upper body 120 can face the first boundary surface 121 of the first upper body 120. The first outer surface 122 of the first upper body 120 can be a curved surface bulging to the left, that is, in the direction opposite to the direction from the first upper body 120 toward the space 109.

[0060] For example, the first boundary surface 121 of the first upper body 120 can extend long in the vertical direction. For example, the first outer surface 122 of the first upper body 120 can extend at a certain angle (acute angle) toward the space 109 with respect to a vertical line extending in the vertical direction, that is, toward the right side.

[0061] At this time, the curvature of the first outer surface 122 of the first upper body 120 can be larger than the curvature of the first boundary surface 121 of the first upper body 120. And the first boundary surface 121 of the first upper body 120 can meet the first outer surface 122 of the first upper body 120 to form an edge. The edge can be provided at the front end 120f and the rear end 120r of the first upper body 120. For example, the front end 120f can extend at a certain angle (acute angle) backward with respect to a vertical line extending in the vertical direction. For example, the rear end 120r can extend at a certain angle (acute angle) forward with respect to a vertical line extending in the vertical direction.

[0062] The second upper body 130 can be separated from the first upper body 120 toward the right side. The second upper body 130 can extend long in the vertical direction. The second boundary surface 131 of the second upper body 130 can face the space 109 and partition a part of the boundary of the space 109. The second boundary surface 131 of the second upper body 130 can be a curved surface bulging toward the left side in the direction from the second upper body 130 toward the space 109. The second outer surface 132 of the second upper body 130 can face the second boundary surface 131 of the second upper body 130. The second outer surface 132 of the second upper body 130 can be a curved surface bulging toward the right side in the direction opposite to the direction from the second upper body 130 toward the space 109.

[0063] For example, the second boundary surface 131 of the second upper body 130 can extend long in the vertical direction. For example, the second outer surface 132 of the second upper body 130 can extend at a certain angle (acute angle) toward the space 109 with respect to the vertical line extending in the vertical direction, that is, to the left.

[0064] At this time, the curvature of the second outer surface 132 of the second upper body 130 can be larger than the curvature of the second boundary surface 131 of the second upper body 130. And the second boundary surface 131 of the second upper body 130 can meet the second outer surface 132 of the second upper body 130 to form an edge. The edge can be provided at the front end 130f and the rear end 130r of the second upper body 130. For example, the front end 130f can extend at a certain angle (acute angle) backward with respect to the vertical line extending in the vertical direction. For example, the rear end 130r can extend at a certain angle (acute angle) forward with respect to the vertical line extending in the vertical direction.

[0065] On the other hand, the first upper body 120 and the second upper body 130 can be symmetric with respect to the space 109. And the first outer surface 122 of the first upper body 120 and the second outer surface 132 of the second upper body 130 can be located on a virtual curved surface extending along the outer peripheral surface 111 of the lower body 110. In other words, the first outer surface 122 of the first upper body 120 and the second outer surface 132 of the second upper body 130 can be smoothly connected to the outer peripheral surface 111 of the lower body 110. And the upper surfaces of the first upper body 120 and the second upper body 130 can be provided as horizontal planes. In this case, the blower 100 can be formed in an overall truncated cone shape. Thereby, the risk of the blower 100 being overturned by an external impact can be reduced.

[0066] The groove 141 is located between the first upper body 120 and the second upper body 130 and can extend longitudinally in the front-rear direction. The groove 141 can be a downwardly concave curved surface. The groove 141 can have a first side 141a (see FIG. 5) connected to the lower side of the first boundary surface 121 of the first upper body 120 and a second side 141b (see FIG. 5) connected to the lower side of the second boundary surface 131 of the second upper body 130. The groove 141 can form a part of the boundary of the space 109. The air flowing inside the lower body 110 by the fan 150 described later can be distributed to the internal space of the first upper body 120 and the internal space of the second upper body 130 with the groove 141 interposed therebetween. On the other hand, the groove 141 can be referred to as a connecting groove or a connecting surface.

[0067] On the other hand, the cover 113 can be detachably coupled to the lower body 110. The cover 113 can be provided as a part of the lower body 110. If the cover 113 is separated from the lower body 110, the user can access the internal space of the lower body 110. Thereby, the user can provide the filter 103 described later inside the lower body 110, separate the filter 103 from the lower body 110 to wash the filter, or repair or replace the filter. For example, the suction hole 112 can also be formed in the cover 113.

[0068] On the other hand, a display (not shown) is provided at the front part of the lower body 110 and can display the operation information of the blower 100 or provide an interface part capable of receiving a user's command. For example, the display can include a touch panel.

[0069] As shown in FIG. 2, the lower body 110 can provide an internal space in which a filter 103, a fan 150, and an air guide 160, which will be described later, are provided.

[0070] The filter 103 can be detachably provided in the internal space of the lower body 110. For example, the filter 103 can be integrally formed in a cylindrical shape. That is, the filter 103 can be provided with a hole 103p formed therethrough in the vertical direction. In this case, indoor air can flow into the interior of the lower body 110 through the suction hole 112 (see FIG. 1) by the operation of the fan 150 described later. Then, the indoor air flowing into the interior of the lower body 110 can flow from the outer peripheral surface to the inner peripheral surface of the filter 103 to be purified and then flow upward through the hole 103p.

[0071] The fan 150 can be provided in the internal space of the lower body 110 and disposed above the filter 103. In other words, the filter 103 can be disposed upstream of the fan 150. The fan 150 can cause the flow of air flowing into the interior of the blower 100 or discharged from the blower 100 to the outside. The fan 150 can include a fan housing 151 (see FIG. 21), a fan motor 152, a hub 153, a shroud 154, and blades 155. On the other hand, the fan 150 can be referred to as a fan assembly or a fan module.

[0072] The fan housing 151 can form the appearance of the fan 150. The fan housing 151 can be provided with a suction port (not numbered) formed therethrough in the vertical direction. The suction port can be formed at the lower end of the fan housing 151 and can be formed inside the bell mouth (171, bell mouth, see FIG. 13).

[0073] The fan motor 152 can provide a rotational force. The fan motor 152 can be a centrifugal fan or a mixed-flow fan motor. The fan motor 152 can be supported by a motor cover 162 described later. At this time, the rotation axis of the fan motor 152 extends downward from the fan motor 152 and can penetrate the lower surface of the motor cover 162. The hub 153 can be coupled to the rotation axis and rotated together with the rotation axis. The shroud 154 can be separated from the hub 153. A plurality of blades 155 can be arranged between the shroud 154 and the hub 153.

[0074] Thus, when the fan motor 152 is driven, air can flow in axially (i.e., in the length direction of the rotation axis) of the fan motor 152 through the suction port, and be discharged in the radial direction of the fan motor 152 and above it.

[0075] The air guide 160 can provide a flow path 160p through which the air discharged from the fan 150 flows. For example, the flow path 160p can be an annular flow path. The air guide 160 can include a guide body 161, a motor cover 162, and a guide vane 163. On the other hand, the air guide 160 can be referred to as a diffuser.

[0076] The guide body 161 can form the appearance of the air guide 160. The motor cover 162 can be disposed at the central portion of the air guide 160. For example, the guide body 161 can be formed in a cylindrical shape. And the motor cover 162 can be formed in a bowl shape. In this case, the annular flow path 160p described above can be formed between the guide body 161 and the motor cover 162. The guide vane 163 can guide the air provided from the fan 150 to the flow path 160p upward. A plurality of guide vanes 163 are disposed in the annular flow path 160p and can be spaced apart from each other in the circumferential direction of the guide body 161. At this time, each of the plurality of guide vanes 163 can extend from the outer surface of the motor cover 162 to the inner circumferential surface of the guide body 161.

[0077] The distribution unit 140 is located above the air guide 160 and can be disposed between the lower body 110 and the upper bodies 120, 130. The distribution unit 140 can provide a flow path 140p through which the air that has passed through the air guide 160 flows. The air that has passed through the air guide 160 can be distributed to the first upper body 120 and the second upper body 130 via the distribution unit 140. In other words, the air guide 160 guides the air flowed by the fan 150 to the distribution unit 140, and the distribution unit 140 can guide the air flowing in from the air guide 160 to the first upper body 120 and the second upper body 130. The groove 141 (see FIG. 1) described above can form a part of the outer surface of the distribution unit 140. On the other hand, the distribution unit can be referred to as a middle body, an inner body, or a tower base.

[0078] For example, the first upper body 120 and the second upper body 130 can be symmetrical with respect to the left and right.

[0079] The first upper body 120 can provide a first flow path 120p through which a part of the air passing through the air guide 160 flows. The first flow path 120p can be formed in the internal space of the first upper body 120. The second upper body 130 can provide a second flow path 130p through which the remaining air passing through the air guide 160 flows. The second flow path 130p can be formed in the internal space of the second upper body 130. The first flow path 120p and the second flow path 130p can communicate with the flow path 140p of the distribution unit 140 and the flow path 160p of the air guide 160.

[0080] As shown in FIGS. 1 and 3, the first slit 120s can discharge the air flowing through the first flow path 120p into the space 109. The first slit 120s can be formed adjacent to the rear end 120r of the first upper body 120 and penetrating the first boundary surface 121 of the first upper body 120. The first slit 120s can be formed long along the rear end 120r of the first upper body 120. For example, the first slit 120s can be hidden from the line of sight of a user looking from the front to the rear of the blower 100.

[0081] At this time, the first slit 120s can be formed to be inclined at a certain angle (acute angle) forward with respect to a vertical line extending in the vertical direction.

[0082] For example, the first slit 120s can be parallel to the rear end 120r of the first upper body 120. As another example, the first slit 120s can not be parallel to the rear end 120r of the first upper body 120, and the inclination of the first slit 120s with respect to the vertical line can be greater than the inclination of the rear end 120r.

[0083] As shown in FIGS. 1 and 4, the second slit 130s can discharge the air flowing through the second flow path 130p (see FIG. 2) into the space 109. The second slit 130s can be formed adjacent to the rear end 130r of the second upper body 130 and penetrating the second boundary surface 131 of the second upper body 130. The second slit 130s can extend long along the rear end 130r of the second upper body 130. For example, the second slit 130s can be hidden from the line of sight of a user looking from the front to the rear of the blower 100.

[0084] At this time, the second slit 130s can be formed to be inclined at a certain angle (acute angle) forward with respect to a vertical line extending in the vertical direction.

[0085] For example, the second slit 130s can be parallel to the rear end 130r of the second upper body 130. As another example, the second slit 130s can be non-parallel to the rear end 130r of the second upper body 130. In this case, the second slit 130s can be inclined at a first angle a1 (e.g., 4 degrees) with respect to the vertical line V, and the rear end 130r can be inclined at a second angle a2 (e.g., 3 degrees) smaller than the first angle a1 with respect to the vertical line V.

[0086] On the other hand, the first slit 120s (see FIG. 3) and the second slit 130s can face each other and be symmetrical left and right.

[0087] Furthermore, referring to FIGS. 2 and 3, the vanes (124, 134, vane) are provided in the internal space of the first upper body 120 and the internal space of the second upper body 130, and can guide the flow of air.

[0088] The first vane 124 can guide the air rising in the first flow path 120p to the first slit 120s. The first vane 124 can be adjacent to the first slit 120s and fixed to the inner surface of the first upper body 120. The first vane 124 can have a shape bulging upward. The first vane 124 can include a plurality of first vanes 124 spaced apart from each other in the vertical direction. Each of the plurality of first vanes 124 has one end adjacent to the first slit 120s, and the plurality of first vanes 124 can be spaced apart from each other along the first slit 120s. The shapes of the respective plurality of first vanes 124 can be different from each other.

[0089] For example, among the plurality of first vanes 124, the curvature of the vane located relatively lower can be greater than the curvature of the vane located relatively upper. At this time, the position of the other end of the vane located relatively lower among the plurality of first vanes 124, which is opposite to the one end, can be the same as or lower than the one end, and the position of the other end of the vane located relatively upper among the plurality of first vanes 124, which is opposite to the one end, can be the same as or higher than the one end.

[0090] Thereby, the first vane 124 can smoothly guide the air rising in the first flow path 120p to the first slit 120s.

[0091] The second vane 134 can guide the air rising in the second flow path 130p to the second slit 130s. The second vane 134 can be adjacent to the second slit 130s and fixed to the inner surface of the second upper body 130. The second vane 134 can have a shape bulging upward. The second vane 134 can include a plurality of second vanes 134 spaced apart from each other in the vertical direction. Each of the plurality of second vanes 134 has one end adjacent to the second slit 130s, and the plurality of second vanes 134 can be spaced apart from each other along the second slit 130s. The shapes of the respective plurality of second vanes 134 can be different from each other.

[0092] For example, among a plurality of second vanes 134, the curvature of the vane located relatively lower can be greater than the curvature of the vane located relatively higher. At this time, among the plurality of second vanes 134, the position of the other end opposite to the one end of the vane located relatively lower can be the same as or lower than the one end, and the position of the other end opposite to the one end of the vane located relatively higher can be the same as or higher than the one end.

[0093] Thereby, the second vane 134 can smoothly guide the air rising in the second flow path 130p to the second slit 130s.

[0094] As shown in FIGS. 5 and 6, the damper 210 can be movably coupled to the first upper body 120 and / or the second upper body 130. The damper 210 can protrude from the first upper body 120 and / or the second upper body 130 toward the space 109. The damper 210 can be formed flat or with a curvature. For example, the damper 210 can be an outwardly bulged plate. For example, the damper 210 can include a first damper 210a and a second damper 210b.

[0095] The first damper 210a can protrude into the space 109 through the first slot 120h (see FIG. 7) or be inserted into the interior of the first upper body 120 through the first slot 120h. The first damper 210a can close the first slot 120h to prevent the air flowing through the first flow path 120p from leaking to the outside through the first slot 120h. Here, the first slot 120h can be formed adjacent to the front end 120f of the first upper body 120 and penetrating the first boundary surface 121 of the first upper body 120. The first slot 120h can be formed long along the front end 120f of the first upper body 120.

[0096] For example, the first slot 120h can be parallel to the front end 120f. As another example, the first slot 120h can be not parallel to the front end 120f, and the inclination of the first slot 120h with respect to the vertical line can be greater than the inclination of the front end 120f. On the other hand, the first slot 120h can be referred to as the first board slot.

[0097] The second damper 210b can protrude into the space 109 through the second slot 130H (see FIG. 7) or can be inserted into the inside of the second upper body 130 through the second slot 130h. The second damper 210b can close the second slot 130h and prevent the air flowing through the second flow path 130p from leaking to the outside through the second slot 130h. Here, the second slot 130h can be formed adjacent to the front end 130f of the second upper body 130 and penetrate the second boundary surface 131 of the second upper body 130. The second slot 130h can be formed long along the front end 130f of the second upper body 130.

[0098] For example, the second slot 130h can be parallel to the front end 130f. As another example, the second slot 130h can be not parallel to the front end 130f, and the inclination of the second slot 130h with respect to the vertical line can be greater than the inclination of the front end 130f. On the other hand, the second slot 130h can be referred to as the second board slot.

[0099] The first slot 120h and the second slot 130h face each other, and the first damper 210a and the second damper 210b can contact or separate from each other.

[0100] Thereby, if the first damper 210a and the second damper 210b are located in the space 109, the first damper 210a and the second damper 210b can cover or close at least a part in front of the space 109.

[0101] On the one hand, the damper 210 can be moved passively by the user relative to the first upper body 120 and / or the second upper body 130. Alternatively, the damper 210 can be moved automatically relative to the first upper body 120 and / or the second upper body 130 by a motor and a power transmission member 246 (see FIG. 12) provided inside the blower 100.

[0102] As shown in FIG. 7, the distance D between the front end 120f of the first upper body 120 and the first slot 120h can be the same as the distance D between the front end 130f of the second upper body 130 and the second slot 130h.

[0103] The first boundary surface 121 of the first upper body 120 and the second boundary surface 131 of the second upper body 130 face each other and can form the left and right boundaries of the space 109. The first boundary surface 121 of the first upper body 120 bulges to the right, and the second boundary surface 131 of the second upper body 130 can bulge to the left. In other words, the distance between the first boundary surface 121 of the first upper body 120 and the second boundary surface 131 of the second upper body 130 can become smaller and then larger from the rear to the front. On the other hand, the distance can be the width of the space 109.

[0104] The first interval B1 can be defined as the distance between the front end 120f of the first upper body 120 and the front end 130f of the second upper body 130. The second interval B2 can be defined as the distance between the rear end 120r of the first upper body 120 and the rear end 120r of the second upper body 130. For example, the second interval B2 can be the same as or different from the first interval B1. The reference interval B0 can be the minimum of the distances between the first boundary surface 121 of the first upper body 120 and the second boundary surface 131 of the second upper body 130. For example, the reference interval B0 can be 20 to 30 mm.

[0105] For example, in the front-rear direction, the distance between the center of the first boundary surface 121 of the first upper body 120 and the center of the second boundary surface 131 of the second upper body 130 may be the reference distance B0. As another example, in the front-rear direction, the distance between a portion located in front of the center of the first boundary surface 121 of the first upper body 120 and a portion located in front of the center of the second boundary surface 131 of the second upper body 130 may be the reference distance B0. As yet another example, in the front-rear direction, the distance between a portion located behind the center of the first boundary surface 121 of the first upper body 120 and a portion located behind the center of the second boundary surface 131 of the second upper body 130 may be the reference distance B0.

[0106] In this case, the width of the rear portion of the space 109 is the second interval B2, the width of the central portion of the space 109 is the reference interval B0, and the width of the space 109 can become smaller as it goes from the rear portion to the central portion. And the width of the front portion of the space 109 is the first interval B1, and the width of the space 109 can become larger as it goes from the central portion to the front portion.

[0107] Thereby, a part of the air flowing by the fan 150 (see FIG. 4) is discharged into the space 109 through the first slit 120s, and the rest is discharged into the space 109 through the second slit 130s, and the air can be mixed in the space 109. And due to the coanda effect, the air discharged into the space 109 can flow forward along the first boundary surface 121 of the first upper body 120 and the second boundary surface 131 of the second upper body 130.

[0108] As shown in FIGS. 8 and 9, in the first state of the blower 100, the front end 210f of the damper 210 can be inserted into or hidden by the slots 120h, 130h. In this case, the front end 210f of the damper 210 can form a continuous surface with the boundary surfaces 121, 131.

[0109] As a result, the air discharged into the space 109 corresponding to the operation of the fan 150 (see FIG. 4) can flow forward along the boundary surfaces 121 and 131 of the upper bodies 120 and 130. At this time, the air flowing forward can be dispersed left and right along the curvature of the boundary surfaces 121 and 131. And such air flow can form an air current such that the air around the upper bodies 120 and 130 flows into the space 109 (entrainment) or moves forward along the outer surfaces 122 and 132. As a result, the blower 100 can provide an air current with a large air volume to a user or the like.

[0110] As shown in FIGS. 10 and 11, in the second state of the blower 100, a part of the first damper 210a can pass through the first slot 120h and be located in the space 109, and a part of the second damper 210b can pass through the second slot 130h and be located in the space 109. In this case, the front end 210f of the first damper 210a and the front end 210f of the second damper 210b can abut against each other.

[0111] As a result, the air discharged into the space 109 corresponding to the operation of the fan 150 (see FIG. 4) can be blocked by the first damper 210a and the second damper 210b and rise upward while flowing forward along the boundary surfaces 121 and 131 of the upper bodies 120 and 130.

[0112] On the other hand, by adjusting the length by which the damper 210 protrudes from the slot 120h or the position of the front end 210f of the damper 210 with respect to the reference line LL' extending in the front-rear direction, the air direction of the air discharged from the blower 100 can be adjusted.

[0113] As shown in FIG. 12, the grill 173 can be disposed between the filter 103 and the fan 150. The grill 173 can block the inflow of foreign matters or the like into the fan 150. If the filter 103 is separated from the lower body 110, the grill 173 can block a user's finger from entering the inside of the fan 150.

[0114] As shown in FIGS. 13 to 15, the grill assembly 170 can include the aforementioned grill 173, the bell mouth (171, bell mouth), and the supporter 172. At this time, the bell mouth 171 and the supporter 172 can be integrally formed or separately provided and coupled to each other.

[0115] The bell mouth 171 can be formed in an overall ring shape. The suction port 170a is formed inside the bell mouth 171 and can supply air to the fan 150 (see FIG. 12). In the air flow direction, the diameter of the suction port 170a becomes smaller from upstream to downstream, and air can smoothly flow into the fan 150 through the suction port 170a. For example, the bell mouth 171 can include a plastic or ABS resin (Acrylonitrile Butadiene Styrene resin) material.

[0116] The grooves (171a, grooves) are formed while being recessed from the lower surface of the bell mouth 171 upward and can be spaced apart from each other in the circumferential direction of the bell mouth 171. And the groove 171a can be formed long in the front-rear direction.

[0117] The supporter 172 can extend in the radial direction of the bell mouth 171 on the outer peripheral surface of the bell mouth 171 and be connected or coupled to the inner peripheral surface of the lower body 110. That is, the supporter 172 can be formed in an overall ring shape. For example, the supporter 172 can include a plastic or ABS resin (Acrylonitrile Butadiene Styrene resin) material.

[0118] For example, the inner part 172a of the supporter 172 forms the inner diameter of the supporter 172 and forms a step with respect to the bellows 171, and the outer part 172b of the supporter 172 forms the outer diameter of the supporter 172 and can form a step with respect to the inner part 172a. And the inner part 172a can face the upper side of the filter 103. That is, a trap (172t, trap, see FIGS. 13 and 16) can be formed between the bellows 171, the inner part 172a, the outer part 172b, and the filter 103. Thereby, the trap 172t can minimize the outflow of air to the outside through the gap between the grill assembly 170 and the filter 103.

[0119] And the first coupling groove (not shown, see FIG. 12) is formed at the upper end of the outer part 172b, and the distribution unit 140 can be sandwiched or coupled to the first coupling groove. Also, the second coupling groove (not shown, see FIG. 13) is formed at the lower end of the outer part 172b, and the lower body 110 can be sandwiched or coupled to the second coupling groove.

[0120] The grill 173 can be coupled to the bellows 171 below the bellows 171. The grill 173 can include a first wire 174 and a second wire 175 that cross each other. The first wire 174 can extend long in the front-rear direction, and the second wire 175 can extend long in the left-right direction. The first wires 174 can be spaced apart from each other in the left-right direction, and the second wires 175 can be spaced apart from each other in the front-rear direction. For example, the number of the first wires 174 can be more than the number of the second wires 175. In this case, a part of the second wire 175 can be disposed at both ends of the first wire 174, and the rest can be disposed between both ends of the first wire 174.

[0121] Then, the first wire 174 and the second wire 175 can be joined to each other by a method such as welding. In this case, the second wire 175 can be joined to or fixed to the first wire 174 above the first wire 174. For example, the grill 173 can include a metallic material. On the other hand, a part of the first wire 174 can be inserted into the groove 171a described above. At this time, the diameter of a part of the first wire 174 is larger than the width of the groove 171a, and a part of the first wire 174 can be joined to the groove 171a in a snap-fit manner. That is, the groove 171a can guide the connection of the first wire 174 to the bellows 171.

[0122] The leg 174a can be formed on a part of the first wire 174. The leg 174a can be bent at the end of the first wire 174 toward the inner part 172a. At this time, the length of the leg 174a can be substantially the same as the height of the step of the inner part 172a with respect to the bellows 171. The ring 174b is formed at the end of the leg 174a and can be joined to the inner part 172a. For example, the ring 174b can be suspended from a hook (not shown) provided on the lower side of the inner part 172a. As another example, a fastening member such as a screw can be tightened through the ring 174b into a hole (not shown) formed on the lower side of the inner part 172a. On the other hand, the hook or the hole can be referred to as a fastening part.

[0123] Thereby, the lower end of the grill 173 inserted into the groove 171a can be arranged higher than the lower end of the bellows 171 or at the same height as the lower end of the bellows 171. That is, since the height of the grill assembly 170 is not increased by the grill 173, an increase in air flow resistance or noise generation due to the grill 173 can be minimized.

[0124] As shown in FIGS. 15 and 16, the bellows 171 can include a first part 1711 and a second part 1712.

[0125] The first part 1711 extends upward from the lower end 1713 of the bellows 171 and can form the inner diameter of the bellows 171. For example, the first part 1711 can be formed to bulge toward the inside of the bellows 171. That is, the air flowing into the bellows 171 can be provided to the fan 150 along the first part 1711.

[0126] The second part 1712 extends upward from the lower end 1713 of the bellows 171 and can form the outer diameter of the bellows 171. For example, the second part 1712 can be formed to bulge toward the outside of the bellows 171.

[0127] The first part 1711 and the second part 1712 are connected to each other, and the cross-section of the bellows 171 can be formed in a "U" shape. At this time, the lower end 1713 of the bellows 171 is located on the upper surface of the filter 103, and the bellows 171 can be formed to bulge toward the upper surface of the filter 103.

[0128] On the other hand, the shroud 154 can form the lower end of the fan 150. Here, although the diameter of the shroud 154 is constant from the lower end of the shroud 154 to a certain portion (not labeled), it can increase from the certain portion to the upper end of the shroud 154.

[0129] In this case, the lower end of the shroud 154 can be disposed between the first part 1711 and the second part 1712. In the vertical direction, the position of the lower end of the shroud 154 can be lower than the positions of the upper ends of the first part 1711 and the second part 1712. In other words, the first part 1711 and the second part 1712 can surround the lower end of the shroud 154. And the upper end of the first part 1711 can be adjacent to the inside of the lower end of the shroud 154, and the upper end of the second part 1712 can be adjacent to the outside of the lower end of the shroud 154.

[0130] As a result, the first part 1711, the shroud 154, and the second part 1712 form a labyrinth seal, and the scattering of air through the gap between the fan 150 and the bellmouth 171 can be minimized.

[0131] On the other hand, the protrusion 1712a can protrude upward from the upper end of the second part 1712 and extend along the circumferential direction of the bellmouth 171. In this case, the supporter 172 is disposed below the protrusion 1712a and can extend in the radial direction of the bellmouth 171 on the side surface of the second part 1712.

[0132] As a result, the protrusion 1712a can minimize the re-inflow of the air discharged from the fan 150 to the fan 150, and improve the efficiency or performance of the fan.

[0133] As shown in FIG. 17, the base 102 can include a lower part 1021, an upper part 1022, and a middle part 1023.

[0134] The lower part 1021 forms the lower surface of the blower 100 and can be placed at the bottom of the indoor space. The lower part 1021 can be formed in a circular plate or disk shape as a whole.

[0135] The upper part 1022 can be connected to the lower part 1021 above the lower part 1021. For example, the upper part 1022 and the lower part 1021 can be formed as one body. The upper part 1022 can be formed in a cylinder shape as a whole.

[0136] The middle part 1023 can extend in the radial direction of the upper part 1022 on the outer peripheral surface of the upper part 1022. The middle part 1023 can be formed in an overall ring shape. The first middle part 1023a is disposed below the second middle part 1023b and can protrude further in the radial direction of the upper part 1022 than the second middle part 1023b. In this case, the lower end of the lower body 110 (see FIG. 20) is fixed to the first middle part 1023a, and the inner peripheral surface of the lower body 110 can be brought into contact with the side surface of the second middle part 1023b. At this time, in the vertical direction, the outer diameter of the second middle part 1023b can be substantially the same as the inner diameter of the lower body 110.

[0137] Thereby, when the lower body 110 is coupled to the base 102, the upper part 1022 and the second middle part 1023b can be hidden from the outside, and the lower part 1021 and the first middle part 1023a can be exposed to the outside.

[0138] On the other hand, the filter 103 can be disposed on the upper surface 1022a of the upper part 1022. In this case, the column (180, column) can be brought into contact with or coupled to the outside of the filter 103 to fix the position of the filter 103 with respect to the upper part 1022. For example, the column 180 and the upper part 1022 can be formed integrally (one body). As another example, the column 180 and the upper part 1022 can be provided separately and can be coupled to each other via a holder 1024 described later. As still another example, some of the columns 180 and the upper part 1022 can be formed integrally, and the remaining columns 180 and the upper part 1022 can be coupled to each other via the holder 1024.

[0139] The column 180 can extend long in the longitudinal direction of the filter 103, that is, in the vertical direction. The columns 180 can be spaced apart from each other in the circumferential direction of the filter 103.

[0140] The holder 1024 can be provided on the upper surface 1022a of the upper part 1022. The holder 1024 can extend along the circumferential direction of the upper part 1022. In other words, the holder 1024 can extend in an arc. The holder 1024 can be provided with at least one. The holder 1024 can be provided with holders spaced apart from each other in the circumferential direction of the upper part 1022. For example, the number of the holders can be the same as the number of the columns 180. In the radial direction of the upper part 1022 or the radial direction of the filter 103, the holder 1024 can be aligned with the column 180.

[0141] For example, the holder 1024 can protrude upward from the upper surface 1022a of the upper part 1022 and face the outer lower part of the column 180. In this case, the holder hole 1024a can be formed through the holder 1024. And a fastening member such as a screw can be fastened to the column 180 through the holder hole 1024a. Thereby, the column 180 can be fixed on the base 102. On the other hand, the outer peripheral surface of the holder 1024 can be smoothly connected to the outer peripheral surface of the upper part 1022.

[0142] For another example, the holder 1024 can be recessed downward from the upper surface 1022a of the upper part 1022, and the lower part of the column 180 can be inserted into the holder 1024. In this case, an upper hole (not shown) can be formed through the upper part 1022. And a fastening member such as a screw can be fastened to the column 180 inserted into the holder 1024 through the upper hole. Thereby, the column 180 can be fixed to the base 102.

[0143] As shown in FIGS. 17 and 18, the column 180 and at least one holder 1024 can be arranged outside the entry or exit path of the filter 103 with respect to the base 102. Here, the filter 103 can move backward from the upper side of the base 102 and be mounted on the base 102, and move forward to be separated from the base 102. That is, the portion of the column 180 that contacts the filter 103 can be arranged within a range of 180 degrees in the circumferential direction of the filter 103 with respect to the longitudinal axis of the filter 103. For example, the column 180 can be arranged on the left side, right side, and rear of the filter 103.

[0144] The first column 181 can be arranged at the rear portion of the upper surface 1022a of the upper body 1022. The holder 1024 can be provided at the rear portion of the upper surface of the upper body 1022 and can be coupled to the first column 181. That is, the first column 181 is arranged behind the filter 103 and can be fixed to the upper side of the base 102 via the holder 1024. At this time, the first column 181 can extend along the outer peripheral surface of the filter 103. Specifically, the first column 181 can include a first outer wall 1811 and a first inner wall 1812.

[0145] The first outer wall 1811 and the first inner wall 1812 can extend in an arc. The first outer wall 1811 can be coupled to the first inner wall 1812 behind the first inner wall 1812. The first outer wall 1811 can face the lower body 110 and be adjacent to or in contact with the inner peripheral surface of the lower body 110. The curvature of the first outer wall 1811 can be substantially the same as the curvature of the inner peripheral surface of the lower body 110. The first inner wall 1812 can face the filter 103 and be in contact with the outer peripheral surface of the filter 103. The curvature of the first inner wall 1812 can be substantially the same as the curvature of the outer peripheral surface of the filter 103.

[0146] The second column 182 can be disposed on the left side portion of the upper surface 1022a of the upper body 1022. The holder 1024 can be provided on the left side portion of the upper surface of the upper body 1022 and can be coupled to the second column 182. That is, the second column 182 can be disposed on the left side of the filter 103 and can be fixed to the upper side of the base 102 via the holder 1024. At this time, the second column 182 can extend along the outer peripheral surface of the filter 103. Specifically, the second column 182 can include a second outer wall 1821 and a second inner wall 1822.

[0147] The second outer wall 1821 can be coupled to the second inner wall 1822 on the left side of the second inner wall 1822. The second outer wall 1821 can face the lower body 110 and can be adjacent to or in contact with the inner peripheral surface of the lower body 110. The curvature of the second outer wall 1821 can be substantially the same as the curvature of the inner peripheral surface of the lower body 110. The second inner wall 1822 can face the filter 103, and a part of the second inner wall 1822 can be in contact with the outer peripheral surface of the filter 103. In this case, the curvature of the said part of the second inner wall 1822 can be substantially the same as the curvature of the outer peripheral surface of the filter 103.

[0148] The third column 183 can be disposed on the right side portion of the upper surface 1022a of the upper body 1022. The holder 1024 can be provided on the right side portion of the upper surface of the upper body 1022 and can be coupled to the third column 183. That is, the third column 183 can be disposed on the right side of the filter 103 and can be fixed to the upper side of the base 102 via the holder 1024. At this time, the third column 183 can extend along the outer peripheral surface of the filter 103. Specifically, the third column 183 can include a third outer wall 1831 and a third inner wall 1832.

[0149] The third outer wall 1831 can be coupled to the third inner wall 1832 on the right side of the third inner wall 1832. The third outer wall 1831 can face the lower body 110 and be adjacent to or in contact with the inner circumferential surface of the lower body 110. The curvature of the third outer wall 1831 can be substantially the same as the curvature of the inner circumferential surface of the lower body 110. The third inner wall 1832 faces the filter 103, and a part of the third inner wall 1832 can be in contact with the outer circumferential surface of the filter 103. In this case, the curvature of the part of the third inner wall 1832 can be substantially the same as the curvature of the outer circumferential surface of the filter 103.

[0150] Thereby, the filter 103 can move rearward between the second column 182 and the third column 183 and can be mounted on the base 102. In this case, the first column 181, the second column 182, and the third column 183 can support the outer circumferential surface of the filter 103. That is, the column 180 can minimize the vibration of the filter 103 caused by vibration generated by the fan 150 (see FIG. 16) or the like. In addition, the column 180 can minimize the positional variation of the filter 103 with respect to the base 102, and minimize an increase in the flow resistance of the air passing through the filter 103 or a decrease in the filtration efficiency.

[0151] On the other hand, the control unit (not shown) can be disposed in the internal space (not shown) of the upper part 1022. The control unit is electrically connected to the configuration of the blower 100 and can control the operation of the blower 100. And a cable (not shown) is connected to the electronic components of the blower 100 and can provide power and signals.

[0152] In this case, the cable can be disposed inside the column 180 to prevent interference between the cable and the filter 103. That is, it is possible to prevent the filter 103 or the cable from being damaged due to mutual contact during the assembly or disassembly process of the filter 103 with respect to the base 102. And it is possible to prevent the filter 103 from deviating from the fixed position with respect to the base 102 by the cable. For example, the cable can be disposed inside the first column 181.

[0153] The first partition wall 1813 can be disposed between the first outer wall 1811 and the first inner wall 1812. The first partition wall 1813 can extend toward the first outer wall 1811 inside the first inner wall 1812. The first partition wall 1813 can partition the space between the first outer wall 1811 and the first inner wall 1812 into two or more sub-spaces. The space can be formed long in the longitudinal direction of the first column 181.

[0154] For example, the first partition wall 1813 can include a first intermediate partition wall 1813a, a first left partition wall 1813b, and a first right partition wall 1813c. The first intermediate partition wall 1813a can be disposed at the center of the first column 181. The first left partition wall 1813b can be disposed between the first intermediate partition wall 1813a and the left frame of the first column 181. The first right partition wall 1813c can be disposed between the first intermediate partition wall 1813a and the right frame of the first column 181. Thereby, the first intermediate partition wall 1813a, the first left partition wall 1813b, and the first right partition wall 1813c can partition the space between the first outer wall 1811 and the first inner wall 1812 into four sub-spaces. For example, the power cable can be disposed in two of the four sub-spaces, and the signal cable can be disposed in the remaining two sub-spaces.

[0155] And the first intermediate partition wall 1813a can extend toward the first outer wall 1811 inside the first inner wall 1812 and contact the inside of the first outer wall 1811. The first left partition wall 1813b can extend toward the first outer wall 1811 inside the first inner wall 1812 and be spaced apart from the inside of the first outer wall 1811. The first right partition wall 1813c can extend toward the first outer wall 1811 inside the first inner wall 1812 and be spaced apart from the inside of the first outer wall 1811.

[0156] Also, the thickness of the first intermediate partition wall 1813a can be greater than the thickness of the first left partition wall 1813b and the thickness of the first right partition wall 1813c. In this case, the boss 1813d can be disposed inside the first intermediate partition wall 1813a to guide the connection between the first outer wall 1811 and the first inner wall 1812.

[0157] As shown in FIGS. 18 and 19, a part of the second inner wall 1822 of the second column 182 contacts the outer peripheral surface of the filter 103, while the remaining part can be spaced apart from the filter 103.

[0158] The support section L1 is a part of the second inner wall 1822 and can extend in an arc. The support section L1 is connected to the rear end 182b of the second column 182 and can contact the outer peripheral surface of the filter 103. That is, the curvature of the support section L1 can be substantially the same as the curvature of the outer peripheral surface of the filter 103.

[0159] The entry section L2 is the remaining part of the second inner wall 1822 and can extend in a straight line. The entry section L2 is connected to the front end 182a of the second column 182 and can be spaced apart from the outer peripheral surface of the filter 103. That is, the entry section L2 can be disposed in front of the support section L1.

[0160] The thickness of the second column 182 at the position of the support section L1 can be greater than the thickness of the second column 182 at the position of the entry section L2. The thickness of the rear end 182b of the second column 182 can be about twice or more the thickness of the front end 182a of the second column 182. For example, the thickness of the rear end 182b of the second column 182 can be 10 mm, and the thickness of the front end 182a of the second column 182 can be 4 mm. Thereby, the filter 103 can easily enter the entry section L2.

[0161] Moreover, the third column 183 and the second column 182 can be symmetric about the left and right. Each of the second column 182 and the third column 183 can be formed in a generally wedge shape. For example, the distance between the entry section L2 of the second column 182 and the entry section of the third column 183 can increase from the rear to the front. As another example, in the front-rear direction, the distance between the entry section L2 of the second column 182 and the entry section of the third column 183 can be constant.

[0162] Also, a virtual straight line P extending along the boundary between the entry section L2 and the support section L1 can intersect the first central axis Ob. The straight line P can be orthogonal to the first central axis Ob. Here, the first central axis Ob can be coaxial with the length direction axis of the base 102 and the length direction axis of the lower body 110. Further, the first central axis Ob can be coaxial with the rotation central axis of the fan 150.

[0163] That is, a first interval P1, which is the distance between the front end 182a of the second column 182 and the front end 183a of the third column 183, can be larger than a second interval P2, which is the distance between the rear end 182b of the second column 182 and the rear end 183b of the third column 183. The first interval P1 can be the same as or larger than the outer diameter of the filter 103. The second interval P2 can be smaller than the outer diameter of the filter 103.

[0164] The inner radius F1 of the filter 103 is the distance from the second central axis Of to the inner surface of the filter 103, and the outer radius F2 of the filter 103 can be the distance from the second central axis Of to the outer surface of the filter 103. Here, the second central axis Of can be the length direction axis of the filter 103. At this time, the thickness t of the filter 103 can be the value obtained by subtracting the inner radius F1 from the outer radius F2. On the other hand, the second column 182 and the third column 183 can intersect the first central axis Ob and the second central axis Of and be symmetric about the left and right with respect to a virtual line extending in the front-rear direction.

[0165] As shown in FIGS. 20 to 22, the first central axis Ob and the second central axis Of can be spaced apart from each other. The second central axis Of can be aligned with the first central axis Ob in the front-rear direction and can be disposed in front of the first central axis Ob. In other words, the second central axis Of can be eccentric forward with respect to the first central axis Ob. Thereby, interference by the column 180 can be prevented during the assembly and disassembly process of the filter 103 with respect to the base 102. On the other hand, the front-rear width of the filter 103 can be larger than the left-right width of the filter 103.

[0166] In the front-rear direction, the distance G between the first central axis Ob and the second central axis Of can be 3 to 7 mm. If the distance G is less than 3 mm, it may be difficult to sufficiently increase the diameter of the filter 103. If the distance G exceeds 7 mm, there is a possibility that the filter 103 may not sufficiently occupy the internal space of the lower body 110.

[0167] Alternatively, the distance G can be 1.5 to 3.5% of the outer diameter of the filter 103 (that is, twice the outer radius F2). If the distance G is less than 1.5% of the outer diameter of the filter 103, it may be difficult to sufficiently increase the diameter of the filter 103. If the distance G exceeds 3.5% of the outer diameter of the filter 103, there is a possibility that the filter 103 may not sufficiently occupy the internal space of the lower body 110.

[0168] As shown in FIGS. 18 and 23, by eccentrically disposing the second central axis Of forward with respect to the first central axis Ob, the volume of the filter 103 can be maximized. The distance between the first central axis Ob and the first inner wall 1812 of the first column 180 can be F3.

[0169] As shown in FIG. 23, the second central axis Of', which is the longitudinal axis of the filter 103', is coaxial with the first central axis Ob, and the filter 103' can be supported by the first column 181. And the outer radius of the filter 103' can be the same as F3. For example, the outer diameter of the filter 103' can be 190 mm.

[0170] As shown in FIG. 18, the second central axis Of is eccentric forward with respect to the first central axis Ob, and the filter 103 can be supported by the first column 181, the second column 182, and the third column 183. And the outer radius of the filter 103 can be F2 which is larger than F3. Here, the difference between F2 and F3 can be the same as the interval G between the second central axis Of and the first central axis Ob. For example, the interval G is 5 mm, and the outer diameter of the filter 103 can be 200 mm.

[0171] Thereby, the outer diameter and the thickness of the filter 103 are increased, and the filtration efficiency can be improved.

[0172] Furthermore, referring to FIGS. 20 and 21, the bell mouth 171 can be arranged above the filter 103. In this case, the air flowing into the interior of the lower body 110 can flow from the outer peripheral surface 103b to the inner peripheral surface 103a of the filter 103 to be purified, and can flow into the suction port 170a (see FIG. 13) of the bell mouth 171 through the hole 103p.

[0173] The inner end of the bell mouth 171 forms the boundary of the suction port 170a and can be the end of the first part 1711 (see FIG. 16) of the bell mouth 171 described above. The diameter BD of the suction port 170a can be smaller than the inner diameter of the filter 103 (that is, twice the inner radius F1). Half of the difference between the diameter BD of the suction port 170a and the inner diameter of the filter 103 can be larger than the interval G between the second central axis Of and the first central axis Ob. That is, the suction port 170a of the bell mouth 171 can be located above the hole 103p of the filter 103. In other words, in the vertical direction, all regions of the suction port 170a can overlap with the hole 103p.

[0174] Thereby, even if the second central axis Of is eccentric forward with respect to the first central axis Ob, all regions of the suction port 170a are located above the hole 103p, and the flow resistance of the air from the filter 103 toward the fan 150 can be minimized.

[0175] The distance between the inner end of the bell mouth 171 and the outer end of the supporter 172 can be the width Bw of the grill assembly 170 (see FIG. 13). Here, the outer end of the supporter 172 can be the outer part 172b of the supporter 172 described above (see FIG. 13). The thickness t of the filter 103 can be smaller than the width Bw of the grill assembly 170. Half of the difference between the thickness t of the filter 103 and the width Bw of the grill assembly 170 can be larger than the distance G between the second central axis Of and the first central axis Ob. That is, the portion between the inner peripheral surface 103a and the outer peripheral surface 103b of the filter 103 can be disposed below the portion between the inner end of the bell mouth 171 and the outer end of the supporter 172. In other words, in the vertical direction, all portions between the inner peripheral surface 103a and the outer peripheral surface 103b of the filter 103 can overlap with the portion between the inner end of the bell mouth 171 and the outer end of the supporter 172.

[0176] Thereby, even if the second central axis Of is eccentric forward with respect to the first central axis Ob, the inner peripheral surface 103a of the filter 103 is disposed outside the inner end of the bell mouth 171, and the outer peripheral surface 103b of the filter 103 is disposed inside the outer end of the supporter 172, so that the flow interference of the air passing through the filter 103 can be minimized.

[0177] Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined or combined with each other in configuration or function).

[0178] For example, a configuration “A” described in one embodiment of the disclosure and the drawings and a configuration “B” described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible).

[0179] The above detailed description should not be construed in a limiting sense in any aspect and should be considered exemplary. The scope of the present invention must be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention (Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and / or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and / or arrangements, alternative uses will also be apparent to those skilled in the art).

Claims

1. A blower, comprising: a lower body having a suction hole and a discharge hole and extending in a length direction; a fan provided inside the lower body, sucking air through the suction hole and discharging the air outside the discharge hole; a filter detachably disposed inside the lower body between the fan and the suction hole and extending in the length direction of the lower body; and a plurality of columns extending in the length direction of the filter and along the outer peripheral direction of the filter and spaced apart from each other, disposed outside a path in which the filter is detached forward from the inner surface of the lower body, and forming a space in which the filter is disposed between the filter and the lower body; The plurality of columns include: a first column provided behind the filter; a second column provided on the left side of the filter; and a third column provided on the right side of the filter, a longitudinal axis of the filter being eccentric with respect to a longitudinal axis of the lower body; the plurality of columns being in contact with an outer peripheral surface of the filter; the plurality of columns being provided within a range of 180 degrees in the outer peripheral direction of the filter with respect to the longitudinal axis of the filter; the second column having a front end and a rear end; the third column having a front end and a rear end; a distance between the rear end of the second column and the rear end of the third column being smaller than an outer diameter of the filter; a distance between the front end of the second column and the front end of the third column being equal to or larger than the outer diameter of the filter; the filter being in a cylindrical shape; each of the second column and the third column includes: a support section having the same curvature as a curvature of the outer peripheral surface of the filter; and an entry section extending linearly with respect to the support section and having at least one plane; a distance between the entry section of the second column and the entry section of the third column increasing from a boundary between the entry section of the second column and the third column and the support section of the second column and the third column toward the front ends of the second column and the third column; a thickness of the second column and the third column at a position of the support section being larger than a thickness of the second column and the third column at a position of the entry section, characterized in that.

2. Below the lower body, a base that is coupled to the lower body and provided inside the lower body, and a plurality of holders provided on the upper side of the base to which the plurality of columns are coupled, further comprising The blower according to claim 1, wherein the filter and the plurality of columns are provided on the base.

3. The base has a circular cross section, The blower according to claim 2, wherein the plurality of holders are aligned with the plurality of columns in the radial direction of the base.

4. The blower according to claim 2, wherein the longitudinal axis of the lower body is coaxial with the longitudinal axis of the base and the rotation center axis of the fan.

5. At least one of the plurality of columns an outer wall facing the inner peripheral surface of the lower body, an inner wall facing the outer peripheral surface of the filter and coupled to the outer wall, a partition provided between the outer wall and the inner wall and partitioning the space between the outer wall and the inner wall into at least two sections, and The blower according to claim 1, further comprising a cable provided in the space.

6. Further comprising a bell mouth provided on the filter and having a suction port for allowing air to pass through, The filter has holes extending in the longitudinal direction of the filter, The blower according to claim 1, wherein the diameter of the suction port is smaller than the diameter of the holes.

7. The blower according to claim 6, wherein the suction port is aligned with the holes in the longitudinal direction of the filter.

8. The blower according to claim 6, further comprising a grill provided under the bell mouth and coupled to the bell mouth.

9. The lower side of the bell mouth has a groove to which the grill is coupled, The blower according to claim 8, wherein the position of the lower end of the grill is the same as or higher than the position of the lower end of the bell mouth.

10. The bell mouth is ring-shaped, has a supporter extending in the radial direction of the bell mouth from the outer peripheral surface of the bell mouth, The blower according to claim 8, wherein the supporter is coupled to the inner peripheral surface of the lower body and the grill.

11. The filter is cylinder-shaped, The blower according to claim 10, wherein the thickness of the filter is smaller than the distance between the inner end of the bellows and the outer end of the supporter.

12. The supporter forms an inner end of the supporter, forms a step with respect to the bellows, and has an inner part facing the upper side of the filter; forms an outer end of the supporter, forms a step with respect to the inner part; and a trap formed between the bellows, the inner part, the outer part, and the filter. The blower according to claim 10 is characterized by comprising the above.

13. The bellows extends upward from the lower end of the bellows and has a first part forming the inner diameter of the bellows; and extends upward from the lower end of the bellows and further has a second part forming the outer diameter of the bellows. The lower end of the fan is provided between the first part and the second part of the bellows. The blower according to claim 10 is characterized in that the position of the lower end of the fan is lower than the positions of the upper ends of the first part and the second part.

14. The bellows further has a protruding part protruding upward from the upper end of the second part and extending along the circumferential direction of the bellows. The blower according to claim 13 is characterized in that the supporter is provided under the protruding part.

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