Air purifier

Abstract

The present disclosure relates to an air purifier. The air purifier of the present disclosure includes: a body having an inlet formed on an circumferential surface thereof and an outlet formed on an upper surface thereof; and a booster disposed at an upper side of the body and switching a flow direction of air which flows through the outlet. The body includes an inlet cover disposed on a circumferential surface and having the inlet, an outlet cover disposed on an upper surface and having the outlet, an upper cover disposed at an upper side of the inlet cover, and having the outlet cover disposed at an upper end portion, a blowing device disposed inside the inlet cover or the upper cover, and forming air flowing from the inlet to the outlet, and a booster coupler disposed at an upper side of the blowing device and coupled to the booster. An outer peripheral end of the outlet cover is seated on an upper side of the upper cover and an inner peripheral end is coupled to the booster coupler.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of and priority to Korean Patent Application No. 10-2024-0077099 in Korea, filed on June 13, 2024, the entire disclosure(s) of which is hereby incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to an air purifier, and more particularly, to an air purifier including a booster.BACKGROUND

[0003] An air purifier is a device that filters and discharges air inside a predetermined space to reduce dust and bacteria in the air in the corresponding space. The air purifier filters out foreign substances through an air flow in the corresponding space and discharges air from which the foreign substance is removed.

[0004] In order to suck the air in a wide range of the corresponding space and to discharge the filtered air, it is possible to initiate a structure of forming an inlet on a circumferential surface of a cylindrical case, and discharging the filtered air to the top. However, a device which switches a separate flow to a top to which the filtered air is discharged is provided in order to discharge the filtered air to a long-distance area of the corresponding space to discharge the filtered air to a wide area of an indoor space.

[0005] Korean Patent Unexamined Publication No. 10-2018-0000121 discloses a blowing device which flows the air to the top from a lower circumferential surface, and a booster which is disposed above the blowing device and switches the flow of the air discharged to the top.

[0006] However, since there is a structure in which the booster is coupled to the upper side of the body, there is a problem in that it is difficult to manage an internal part of the body in which an outlet is formed.SUMMARY

[0007] In view of the above, the present disclosure solves the above-described problems and other problems.

[0008] Another object of the present disclosure is to provide a purifier which is disposed at a lower side of a booster, and may manage an internal part of a body discharging air to an upper side.

[0009] Yet another object of the present disclosure is to provide an air purifier which is disposed at the lower side of the booster, and easily separates and couples an outlet cover forming an outlet.

[0010] Still yet another object of the present disclosure is to provide an air purifier having a structure in which the booster may be easily separated in a structure in which the booster is disposed.

[0011] In order to achieve the objects, the present disclosure provides an air purifier including: a body having an inlet formed on an circumferential surface thereof and an outlet formed on an upper surface thereof, and a booster disposed on the body and switching a flow direction of air which flows through the outlet.

[0012] The body includes an inlet cover disposed on a circumferential surface and having the inlet, and an outlet cover disposed on an upper surface and having the outlet. The outlet cover disposed above the inlet cover. The body includes an upper cover disposed between the outlet cover and the inlet covern,

[0013] The body includes blowing device disposed inside the inlet cover or the upper cover, and forming air flowing from the inlet to the outlet.

[0014] The body includes a booster coupler disposed at an upper side of the blowing device and coupled to the booster.

[0015] An outer peripheral end of the outlet cover is seated on an upper side of the upper cover and an inner peripheral end of the outlet cover is coupled to the booster coupler.

[0016] The outlet cover includes a cover hook inserted into the booster coupler.

[0017] The booster coupler includes a hook hole into which the cover hook is inserted. The hook hole is extended in a circumferential direction, and a width of the hook hole changed according to its circumferential a position.

[0018] The hook hole includes a first hook hole into which the cover hook is inserted. The hook hole includes a second hook hole extended from the first hook hole and limiting upward movement of the cover hook.

[0019] The outlet cover includes a plurality of outlet grills extended radially.

[0020] The outlet cover includes an outlet cover rim connecting an outer peripheral end of each of the plurality of outlet grills, and seated on the upper side of the upper cover.

[0021] The outlet cover includes an inner cover rim connecting an inner peripheral end of the plurality of outer grills, and coupled to the booster coupler.

[0022] Each of the plurality of outer grills has a form of being inclined downward toward the inner cover rim from the outer cover rim.

[0023] A fastening portion fastened to the booster coupler may be disposed in at least some of the plurality of outlet grills. When the booster is coupled to the booster coupler, the fastening portion may be disposed at a lower side of the booster.

[0024] A hook hole into which the cover hook of the outlet cover is inserted is formed in the booster coupler. The fastening portion is disposed outside a radial direction of the hook hole.

[0025] An upper step protrudes form an upper end portion of an outer peripheral end of the outer cover rim. The upper step is seated on an upper end portion of the upper cover.

[0026] The upper cover includes an internal step which protrudes inward so that the upper step is seated.

[0027] The upper outer cover includes a plurality of cover hooks which protrude to a lower side of the inner cover rim. The plurality of cover hooks are disposed to be spaced apart from each other in the circumferential direction.

[0028] Each of the plurality of cover hooks includes a hook protrusion which protrudes outward in the radial direction on a lower end portion thereof.

[0029] The booster coupler includes a rotating body which changes a direction faced by the booster to the circumferential direction, and a support body forming a space where the rotating body is disposed.

[0030] The upper outer cover is coupled to the support body.

[0031] A rotary motor fixedly disposed in the rotating body and a rotary gear which rotates by the rotary motor are disposed at an inner side of the rotating body.

[0032] A rack engaging with the rotary gear is disposed on an inner peripheral surface of the support body.

[0033] The rotating body includes a corresponding terminal electrically connected to the booster

[0034] The rack is disposed in an opposite direction to the corresponding terminal based on a rotary center of the rotating body.

[0035] The booster coupler couples or decouples the booster according to placement.

[0036] Details of other embodiments will be included in the detailed description and the accompanying drawings.ADVANTAGEOUS EFFECTS

[0037] According to the air purifier of the present disclosure, there are one or more following effects.

[0038] First, the air purifier has a structure in which an outlet cover is easily separated to an upper side of a body. Accordingly, there is an advantage in that a user can easily manage an internal part of the body by separating the outlet cover.

[0039] Second, the outlet cover is coupled to a booster coupler of the body through a hook structure. Thereafter, the outlet cover can be fastened to the body through a fastening portion. There is also an advantage in that the user can easily separate the outlet cover in a structure in which the outlet cover is fastened only in one area.

[0040] Further, there is also an advantage in that a stable mounting state of the outlet cover can be maintained in a structure in which the outlet cover is seated even on an upper cover which is an outer peripheral end.

[0041] Third, the air purifier has a structure in which a booster is separable from the body, so the booster can be separated, and then the outlet cover can be easily separated. That is, the air purifier has a structure in which the booster and the outlet cover are easily separated and coupled. The user easily can separate and manage respective components.

[0042] The effects of the present disclosure are not limited to the aforementioned effect, and other effects, which are not mentioned above, will be apparent to a person having ordinary skill in the art from the description of the claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Fig. 1 is a perspective view of an air purifier according to an embodiment of the present disclosure. Fig. 2 is a perspective view of an air purifier according to an embodiment of the present disclosure in which a booster is separated from a body. Fig. 3 is a cross-sectional view of the air purifier according to an embodiment of the present disclosure. Fig. 4 is a perspective view of the booster according to an embodiment of the present disclosure. Fig. 5 is an exploded perspective view of the booster according to an embodiment of the present disclosure. Fig. 6 is a cross-sectional view of the booster according to an embodiment of the present disclosure. Fig. 7 is a rear perspective view of the booster according to an embodiment of the present disclosure. Fig. 8 is a diagram for describing a booster coupler and an upper outlet cover according to an embodiment of the present disclosure. Fig. 9 is a plan view of Fig. 8. Fig. 10 is an exploded perspective view in which some of components of a booster coupler are separated according to an embodiment of the present disclosure. Fig. 11 is a cross-sectional view taken along A-A' of Fig. 9. Fig. 12 is a perspective view of a fixation body according to an embodiment of the present disclosure. Fig. 13 is a perspective view of a movable body according to an embodiment of the present disclosure. Fig. 14 is a plan view of an upper outlet cover, a rotating body, and a support body in a state in which an upper rotating body is removed according to an embodiment of the present disclosure. Fig. 15 is a cross-sectional view taken along XV-XV' of Fig. 14. Fig. 16 is an exploded perspective view in which the upper outlet cover is separated to an upper side in Fig. 8. Fig. 17 is a perspective view of the upper outlet cover according to an embodiment of the present disclosure. Fig. 18 is a cross-sectional view of the upper outlet cover according to an embodiment of the present disclosure. Fig. 19 is a diagram for describing placement of a movable body at a first position, and Fig. 19A is a perspective view illustrating a movable body and a fixation body and Fig. 19B is one side view illustrating the movable body and the fixation body. Fig. 20 is a diagram for describing placement of the movable body at a second position, and Fig. 20A is a perspective view illustrating the movable body and the fixation body and Fig. 20B is one side view illustrating the movable body and the fixation body. DETAILED DESCRIPTION

[0044] Advantages and features of the present disclosure, and methods for accomplishing the same will be more clearly understood from embodiments described in detail below with reference to the accompanying drawings. However, the present disclosure is not limited to embodiments disclosed below but may be implemented in various different forms. However, the exemplary embodiments are provided to make the present disclosure be complete and completely announce the scope of the present disclosure to those skilled in the art to which the present disclosure belongs and the present disclosure is just defined by the scope of the claims. The present disclosure is just defined by the scope of the claims. Throughout this specification, the same reference numerals denote the same elements.

[0045] Hereinafter, the present disclosure will be described with reference to drawings for describing an air purifier according to embodiments of the present disclosure.

[0046] Fig. 1 is a perspective view of an air purifier according to an embodiment of the present disclosure. Fig. 2 is a perspective view of a state in which a booster is separated from a body in Fig. 1. An appearance of the air purifier according to the present disclosure is described with reference to Figs. 1 and 2.

[0047] The air purifier includes a body 100 in which air is sucked through inlets 112 and 114 formed on a circumferential surface, and the air is discharged through an upper outlet 134 (or "outlet")formed on an upper surface. A lower outlet 151 is also formed on a lower surface in the body 100.

[0048] The air purifier may include a booster 500 which is disposed on the body 100. The booster 500 switches a flow direction of the air discharged through the upper outlet 134 of the body 100.

[0049] The body 100 includes a case 102 forming an external shape. A filter which filters the sucked air and a fan which forms air flowing may be disposed inside the case 102.

[0050] The case 102 has a substantially cylindrical structure. The case 102 has the inlets 112 and 114 formed on a circumferential surface thereof in the cylindrical structure. The case 102 has the upper outlet 134 formed on an upper surface thereof. The case 102 has the lower outlet 151 formed on a lower surface thereof.

[0051] The case 102 includes an inlet cover 110 which has the inlets 112 and 114. The inlets 112 and 114 include an upper inlet 112 and a lower inlet 114 located below the upper inlet 112. The upper inlet 112, and the lower inlet 114 disposed below the upper inlet 112 are formed in the inlet cover 110.

[0052] The case 102 includes an upper outlet cover 130 (or 'outlet cover') which has the upper outlet 134. A booster coupler 200 is disposed at the inner side of the upper outlet cover 130.

[0053] The case 102 includes a lower outlet cover 150 which has the lower outlet 151.

[0054] The case 102 includes an upper cover 155 disposed between the inlet cover 110 and the upper outlet cover 130. The upper cover 155 is disposed above the inlet cover 110. An upper discharge path 156 to be described below may be formed at the inner side of the upper cover 155.

[0055] The body 100 includes a base 300 which separates the case 102 to an upper side from a bottom surface. The base 300 may separate the lower outlet 151 formed in the case 102 to the upper side from a bottom.

[0056] The booster coupler 200 coupled to the booster 500 is disposed at an upper portion of the body 100. The booster coupler 200 is disposed at the inner side of the upper outlet 134 formed on the upper surface of the body 100. The upper outlet 134 is formed in an annular shape. The booster coupler 200 is disposed at the inner side of the upper outlet 134 formed in the annular shape.

[0057] The booster 500 is separably disposed at the upper portion of the body 100. Accordingly, the booster 500 may be fixedly disposed at the upper portion of the body 100 as illustrated in Fig. 1, or separated to the upper side from the body 100 as illustrated in Fig. 2.

[0058] The booster 500 may be disposed inclinedly to the upper surface of the body 100. A booster inlet 502 and a booster outlet 504 are formed in the booster 500. The booster outlet 504 is formed in a different direction from the booster inlet 502. The booster outlet 504 is formed in an opposite direction to the booster inlet 502.

[0059] Referring to Fig. 1, the booster 500 may be coupled to the booster coupler 200. The booster 500 may be electrically connected to the body 100 when being coupled to the booster coupler 200.

[0060] Referring to Fig. 2, the booster 500 may be separated from the booster coupler 200.

[0061] Fig. 3 is a cross-sectional view of the air purifier according to an embodiment of the present disclosure. Hereinafter, an overall configuration of the air purifier will be described with reference to Fig. 3.

[0062] The air purifier of the present disclosure includes a body 100 which discharges filtered air to an upper side or a lower side, and a booster 500 which is disposed at the upper side of the body 100 and switches a flow direction of the air discharged to the upper side.

[0063] The body 100 includes a case 102 forming an external shape. The case 102 includes an upper outlet cover 130 disposed on an upper surface of the body 100, and a lower outlet cover 150 disposed on a lower surface of the body 100.

[0064] The upper outlet cover 130 may be formed in an annular plate shape. An upper outlet 134 opened to the upper side is formed on the upper outlet cover 130. The upper outlet cover 130 includes a plurality of upper outlet grills 132 extended radially. The upper outlet 134 may be formed between the plurality of upper outlet grills 132.

[0065] A booster coupler 200 is disposed at the inner side of the upper outlet cover 130.

[0066] The lower outlet cover 150 may be formed in the annular plate shape. A lower outlet 151 opened to the lower side is formed on the lower outlet cover 150. The lower outlet cover 150 includes a plurality of lower outlet grills 152 extended radially. The lower outlet 151 may be formed between the plurality of lower outlet grills 152.

[0067] A base 300 or a lower fan motor 190 is disposed at the inner side of the lower outlet cover 150.

[0068] The case 102 includes an inlet cover 110 which has the inlets 112 and 114. The inlet cover 110 has the upper inlet 112 and the lower inlet 114.

[0069] The case 102 includes an upper cover 155 disposed above the inlet cover 110.

[0070] The body 100 includes an upper blowing device 160 (or 'blowing device') which filters air introduced through the upper inlet 112 and discharges the filtered air through the upper outlet 134.

[0071] The upper blowing device 160 sends air introduced through a circumferential surface to the upper side. The upper blowing device 160 includes an upper filter 162 which filters the air introduced through the upper inlet 112.

[0072] The upper filter 162 has a cylindrical shape. Accordingly, the upper filter 162 filters air which flows from the outer side to the inner side of the circumferential surface.

[0073] The upper blowing device 160 includes an upper filter frame 164 which has a space in which the upper filter 162 is disposed. The upper filter frame 164 is disposed above a control box 290 described below.

[0074] The upper filter frame 164 is extended above the control box 290. The upper filter frame 164 connects the control box 290, and an upper suction panel 166 to be described below. A plurality of upper filter frames spaced in a circumferential direction may be disposed between the control box 290 and the upper suction panel 166.

[0075] The upper blowing device 160 includes an upper suction panel 166 disposed above the upper filter 162 and having an upper orifice 167. The upper suction panel 166 is disposed above the upper filter 162. The upper orifice 167 in which air passing through the upper filter 162 flows is formed at a center of the upper suction panel 166.

[0076] The upper blowing device 160 includes an upper fan 168 discharging the air passing through the upper filter 162 through the upper outlet 134 and an upper fan motor 170 rotating the upper fan 168.

[0077] The upper fan 168 may be a structure in which a fan suction port is formed at a lower side and a fan discharge port is formed at an upper side. The fan discharge port may be opened to radial outer and upper sides. Air may flow from the lower side of the upper fan 168 to the upper side of the upper fan 168 by rotation of the upper fan 168.

[0078] The upper blowing device 160 includes an upper fan housing 172 having a space in which the upper fan 168 is disposed and a discharge path formed above the upper fan 168.

[0079] The upper blowing device 160 includes an upper motor housing 176 having a space in which the upper fan motor 170 is disposed. An upper guide vane 174 connected to the upper motor housing 176 may be disposed at an upper portion of the upper fan housing 172. The upper guide vane 174 may have a form of being disposed between the upper fan housing 172 and the upper motor housing 176, and extended radially.

[0080] The upper guide vane 174 may reduce rotation components of air which flows to the upper side of the upper fan housing 172.

[0081] An upper discharge path 156 is formed between the upper motor housing 176 and the upper fan housing 172. The upper discharge path 156 may have an annular path and have a form of being extended to the upper side.

[0082] The body 100 includes the upper cover 155 disposed above the inlet cover 110. The upper cover 155 has the cylindrical shape. The upper discharge path 156 may be extended to an inner side of the upper cover 155.

[0083] The booster coupler 200 is disposed at the inner side of the upper cover 155. The upper discharge path 156 may be formed between the upper cover 155 and the booster coupler 200. The booster coupler 200 may maintain a range in which the booster 500 is inclined to the upper side.

[0084] The booster coupler 200 is coupled to the booster 500. The booster coupler 200 may rotate the booster 500 in the circumferential direction. That is, the booster coupler 200 may change a direction faced by the booster 500 to the circumferential direction.

[0085] The upper outlet cover 130 is disposed at upper ends of the upper cover 155 and the booster coupler 200.

[0086] The body 100 includes a lower blowing device 180 which filters the air introduced through the lower inlet 114 and discharges the filtered air through the lower outlet 151.

[0087] The lower blowing device 180 sends air introduced through a circumferential surface to the lower side. The lower blowing device 180 includes a lower filter 182 which filters the air introduced through the lower inlet 114.

[0088] The lower filter 182 has the cylindrical shape. Accordingly, the lower filter 182 filters air which flows from the outer side to the inner side of the circumferential surface.

[0089] The lower blowing device 180 includes a lower filter frame 184 which has a space in which the lower filter 182 is disposed. The lower filter frame 184 is disposed below the control box 290 described below.

[0090] The lower filter frame 184 is extended below the control box 290. The lower filter frame 184 connects the control box 290, and a lower suction panel 186 to be described below. A plurality of lower filter frames spaced in the circumferential direction may be disposed between the control box 290 and the lower suction panel 186.

[0091] The lower blowing device 180 includes a lower suction panel 186 disposed above the lower filter 182 and having a lower orifice 187. The lower suction panel 186 is disposed above the lower filter 182. The lower orifice 187 in which air passing through the lower filter 182 flows is formed at a center of the lower suction panel 186.

[0092] The lower blowing device 180 includes a lower fan 188 discharging the air passing through the lower filter 182 through the lower outlet 151 and a lower fan motor 190 rotating the lower fan 188.

[0093] The lower fan 188 may be a structure in which the fan suction port is formed at an upper side and the fan discharge port is formed at a lower side. The fan discharge port may be opened to radial outer and lower sides. Air may flow from the upper side of the lower fan 188 to the lower side of the lower fan 188 by rotation of the lower fan 188.

[0094] The lower blowing device 180 includes a lower fan housing 192 having a space in which the lower fan 188 is disposed and a discharge path formed above the lower fan 188.

[0095] The lower blowing device 180 includes a lower motor housing 196 which forms a space in which the lower fan motor 190 is disposed. A lower guide vane 194 connected to the lower motor housing 196 may be disposed at a lower portion of the lower fan housing 192. The lower guide vane 194 may have a form of being disposed between the lower fan housing 192 and the lower motor housing 196, and extended radially.

[0096] The lower guide vane 194 may reduce rotation components of air which flows to the lower side of the lower fan housing 192.

[0097] A lower discharge path 192a is formed between the lower motor housing 196 and the lower fan housing 192. The lower discharge path 192a may have the annular path and have a form of being extended to the lower side.

[0098] The lower outlet cover 150 may be disposed between the lower motor housing 196 and the lower fan housing 192.

[0099] The body 100 includes the control box 290 disposed between the upper blowing device 160 and the lower blowing device 180, and having electronic parts disposed therein. A printed circuit board which actuates the upper fan 168 or the lower fan 188 may be disposed inside the control box 290.

[0100] An upper pressing plate 292 which is in contact with a lower surface of the upper filter 162 is disposed at an upper portion of the control box 290. The upper pressing plate 292 is disposed in the control box 290 to be movable in upper and lower directions. When the upper filter 162 is disposed above the upper pressing plate 292, the upper pressing plate 292 may move to the lower side.

[0101] A lower pressing plate 294 which is in contact with an upper surface of the lower filter 182 is disposed at a lower portion of the control box 290. The lower pressing plate 294 is disposed in the control box 290 to be movable in the upper and lower directions. When the lower filter 182 is disposed below the lower pressing plate 294, the lower pressing plate 294 may move to the upper side.

[0102] Whether the upper filter 162 is disposed may be determined according to the placement of the upper pressing plate 292. Whether the lower filter 182 is placed may be determined according to the placement of the lower pressing plate 294.

[0103] The body 100 includes a base 300 which separates the lower outlet 151 to the upper side from the bottom. The base 300 includes a base plate 302 which is separated to the lower side of the lower outlet 151, and a base support 304 which separates the base plate 302 to the lower side from the lower outlet 151.

[0104] The base support 304 is extended to the upper side of the base plate 302. The base support 304 may be coupled to a lower surface of the lower motor housing 196.

[0105] Referring to Fig. 4, an external shape of the booster is described.

[0106] The booster 500 has a booster inlet 502 formed at one side and a booster outlet 504 formed at the other side. The booster 500 may have a substantially hemispherical shape.

[0107] The booster 500 includes a booster fan 550 (see Fig. 5) disposed therein. Accordingly, the booster 500 may switch a direction of the air which flows to the upper side through the upper outlet 134 of the body 100.

[0108] The booster outlet 504 may be formed in the annular shape. The booster outlet 504 may be formed in a different direction from the booster inlet 502. The booster outlet 504 may be formed in an opposite direction to the booster inlet 502.

[0109] The booster 500 includes a front body 510. The front body 510 is disposed at an inner side of the annular booster outlet 504.

[0110] The booster 500 includes a rear body 620 having the booster inlet 502. The rear body 620 is disposed in an opposite direction to the front body 510.

[0111] The booster 500 includes a circumference body 560 disposed on a circumference of the front body 510.

[0112] The circumference body 560 is disposed in the circumference of the front body 510. The booster outlet 504 is formed between the circumference body 560 and the front body 510.

[0113] Referring to Fig. 5, a configuration of the booster is described.

[0114] The booster 500 includes the front body 510, the circumference body 560 disposed on the circumference of the front body 510, and the rear body 620 disposed at an opposite side to the front body 510 based on the circumference body 560.

[0115] The booster 500 includes a fan assembly 530 disposed on the rear of the front body 510.

[0116] The front body 510 has a space in which a display is disposed therein. A lamp which irradiates light toward the booster discharge path 506 (see Fig. 6) to be described below may be disposed inside the front body 510.

[0117] The front body 510 includes a front wall 512 disposed to be exposed to the front.

[0118] The front body 510 includes a first inner guide wall 514 extended to the rear from an outer peripheral end of the front wall 512. The first inner guide wall 514 may form the booster discharge path 506 jointly with a second inner guide wall 572 described below.

[0119] A transmission member 518 which irradiates the light generated by the lamp to the booster discharge path 506 may be disposed on a rear surface of the front body 510.

[0120] The fan assembly 530 includes a fan housing 532 disposed on the rear of the front body 510. The fan assembly 530 includes a booster fan 550 rotatably disposed inside the fan housing 532. The fan assembly 530 includes a booster fan motor 552 (see Fig. 6) disposed inside the fan housing 532 and rotating the booster fan 550.

[0121] The fan housing 532 forms a space in which the booster fan 550 is disposed. The fan housing 532 has a housing suction port 532a formed on the rear thereof. A housing discharge port 532b is formed on a circumferential surface of the fan housing 532.

[0122] The fan housing 532 is connected to the front body 510 forward. The fan housing 532 has the housing suction port 532a formed on the rear thereof. The fan housing 532 has the housing discharge port 532b formed on the circumferential surface thereof.

[0123] The fan assembly 530 includes a locking jaw 540 protruding to the rear so as to be connected to the circumference body 560. The locking jaw 540 is disposed on the rear of the fan housing 532. The locking jaw 540 has a structure of protruding to the rear on the rear surface of the fan housing 532. The locking jaw 540 has a structure of protruding to the rear on the rear surface of the fan housing 532 and being bent to the upper side.

[0124] The fan assembly 530 includes a terminal connector 542 disposed to penetrate the circumference body 560 and electrically connected to the body 100. The terminal connector 542 is disposed on the rear of the fan housing 532.

[0125] The terminal connector 542 is disposed in a different direction from the locking jaw 540. The terminal connector 542 is disposed to be spaced apart from the locking jaw 540.

[0126] The fan assembly 530 includes a fastening boss 544 penetrating the circumference body 560 and coupled to the rear body 620. The fastening boss 544 is fastened to the rear body 620 through a separate fastening member 544a.

[0127] The fan assembly 530 includes a guide post 546 which is inserted into a guide hole 586 formed in the circumference body 560. The guide post 546 is extended in line with the fastening boss 544. The guide post 546 protrudes to the rear on the rear surface of the fan housing 532.

[0128] Each of the locking jaw 540 and the terminal connector 542 of the fan assembly 530 is locked to the circumference body 560, so the front body 510 and the circumference body 560 may be coupled to each other. That is, when the locking jaw 540 and the terminal connector 542 are separated from the circumference body 560, the fan assembly 530 and the circumference body 560 may be separated from each other.

[0129] The fastening boss 544 has a structure of protruding to the rear on the rear surface of the fan housing 532. The front body 510 includes a pair of fastening bosses 544 disposed to be spaced apart from each other.

[0130] The circumference body 560 is disposed on the circumference of the fan housing 532. The circumference body 560 is disposed to be spaced apart from the circumferential surface of the fan housing 532.

[0131] The circumference body 560 may include a circumference wall 570 disposed on the circumference of the fan housing 532.

[0132] The circumference body 560 may have a locking groove 582 in which the locking jaw 540 is disposed on the rear.

[0133] The circumference body 560 may have a connection hole 584 formed to be penetrated by the terminal connector 542 on the rear. The connection hole 584 may be opened in a direction in which the terminal connector 542 is extended.

[0134] The circumference body 560 may include the rear wall 580 extended to the inner side on the rear of the circumference wall 570. The rear wall 580 may be formed in a ring shape.

[0135] The locking groove 582 may be formed on the rear wall 580. The connection hole 584 may be formed on the rear wall 580.

[0136] A mounting groove 588 on which the rear body 620 is mounted is formed on the rear wall 580. A rear body hook 624 formed in the rear body 620 may be inserted into the mounting groove 588.

[0137] A booster connector 600 mounted on the booster coupler 200 of the body 100 is disposed on the rear wall 580. The booster connector 600 may be disposed at an inner side of the rear wall 580.

[0138] A bridge 590 may be disposed on the rear wall 580, which connects one side of the rear wall 580 and one side of the booster connector 600. The circumference body 560 may include a pair of bridges 590 connecting the rear wall 560 and the booster connector 600.

[0139] A pair of bridges 590 may be disposed so that a separation interval therebetween is increased toward the rear wall 580 from the booster connector 600.

[0140] A penetration hole 589 penetrated by the fastening boss 544 is formed on the rear wall 580. A guide hole 586 into which the guide post 546 is inserted is formed on the rear wall 580.

[0141] The rear body 620 is disposed on the rear of the circumference body 560. The rear body 620 is separated to the rear of the circumference body 560.

[0142] The rear body 620 may have a shape of being convex to the rear. The booster inlet 502 is formed in the rear body 620. The rear body 620 may have an opening 622 at an area where the booster connector 600 is disposed.

[0143] A plurality of booster inlets 502 may be formed in the rear body 620. The plurality of booster inlets 502 may be disposed to be spaced in the circumferential direction. The plurality of booster inlets 502 may be formed radially.

[0144] The rear body 620 may include a rear body hook 624 protruding to the front so as to be coupled to the circumference body 560. The rear body hook 624 may be inserted into the mounting groove 588 formed in the circumference body 560.

[0145] Referring to Fig. 6, an internal configuration of the booster is described.

[0146] The front body 510 is disposed to face a direction in which the booster outlet 504 is opened. The front wall 512 of the front body 510 may have a flat surface. The front wall 512 may form the display.

[0147] The printed circuit board may be disposed inside the front body 510. A plurality of lamps 520 may be disposed inside the front body 510. A transmission member 518 which irradiates light generated by the lamp 520 to the booster discharge path 506 may be disposed on the rear of the front body 510.

[0148] The fan assembly 530 is disposed on the rear of the front body 510. The fan assembly 530 may have a structure of being fastened to the rear of the front body 510.

[0149] The front body 510 includes the first inner guide wall 514 on the circumferential surface thereof. The first inner guide wall 514 may have a shape in which a diameter becomes larger toward the front wall on the rear of the front body 510.

[0150] The booster fan 550 may adopt a mixed flow fan. The booster fan 550 may have a structure in which the fan suction port is formed in a direction in which a rotary axis is extended and the fan discharge port is formed in a centrifugal direction.

[0151] Accordingly, air which flows in a direction in which the rear body 620 is disposed may be discharged in the centrifugal direction. The booster fan motor 552 rotating the booster fan 550 may be disposed between the booster fan 550 and the front body 510.

[0152] The fan housing 532 may form a space in which the booster fan 550 rotates. The fan housing 532 may have a housing suction port 532a formed in a direction in which the fan suction port of the booster fan 550 is formed. The fan housing 532 may have the housing discharge port 532b formed on a circumference wall in which the fan discharge port is formed.

[0153] Accordingly, air is introduced on the rear by the rotation of the booster fan 550, and air is discharged in a circumferential direction of the booster fan 550.

[0154] The circumference body 560 is disposed on the circumferences of the fan assembly 530 and the front body 510. The circumference body 560 includes an outer wall 574 disposed at an outer side of the circumference of the booster 500. The circumference body 560 includes the second inner guide wall 572 which guides the air discharged through the housing discharge port 532b of the fan housing 532 to the booster outlet 504.

[0155] The second guide wall 572 is disposed to be spaced apart from the first inner guide wall 514. The second guide wall 572 is disposed to be spaced apart from the circumference of the fan housing 532. The second inner guide wall 572 may form the booster discharge path 506 jointly with the first inner guide wall 514.

[0156] The booster discharge path 506 may have a shape of being bent to the front. The booster discharge path 506 may have a shape in which a cross-section of the path is reduced toward the booster outlet 504 from the housing discharge port 532b.

[0157] The booster outlet 504 may guide the air discharged in the centrifugal direction from the fan housing 532 in a vertical direction.

[0158] The locking jaw 540 disposed in the fan housing 532 is disposed to be inserted into the locking groove 582 formed in the circumference body 560. The locking jaw 540 is disposed to penetrate the locking groove 582, and disposed to be in contact with the rear wall of the circumference body 560.

[0159] The terminal connector 542 disposed in the fan housing 532 is disposed to penetrate the connection hole 584.

[0160] The terminal connector 542 disposed in the fan housing 532 and the booster connector 600 disposed in the circumference body 560 are disposed at the opening 622 of the rear body 620. Accordingly, the terminal connector 542 and the booster connector 600 are disposed to be exposed to the outside even in a state in which the rear body 620 is disposed at one side of the circumference body 560.

[0161] The rear body 620 may form a continuous surface jointly with the outer wall 574 of the circumference body 560. Accordingly, some of the air discharged from the body 100 may flow along the rear body 620, and the outer wall 574 of the circumference body 560.

[0162] The booster inlet 502 formed in the rear body 620 is extended radially. Accordingly, a surface on which the booster outlet 502 is not formed may form a continuous surface toward the circumference body 560.

[0163] Hereinafter, the rear of the booster is described with reference to Fig. 7.

[0164] The rear body 620 may have a shape of being convex to the rear. The rear body 620 may have the opening 622 formed at the lower side thereof. A plurality of booster inlets 502 are formed in the rear body 620.

[0165] The booster inlet 502 may be formed radially in an area in which the opening 622 is not formed. The booster connector 600 of the circumference body 560 and the terminal connector 542 of the fan housing 532 are disposed at the opening 622 of the rear body 620 to be exposed.

[0166] The circumference body 560 includes the outer wall 574 disposed at the area exposed to the outside. The circumference body 560 may include the rear wall 580 extended to the inner side on the rear of the outer wall 574.

[0167] The booster connector 600 is disposed at a lower portion of the rear wall 580. The rear wall 580 includes the booster connector 600 extended to the upper side at the lower portion and coupled to the body 100.

[0168] The connection hole 584 penetrated by the terminal connector 542 is formed on the rear wall 580.

[0169] The booster connector 600 may have a shape of protruding to the upper side at the lower portion of the rear wall 580. A plurality of horizontal holes 612, 614, and 616, and a vertical hole 608 may be formed in the booster connector 600 to be coupled to the booster coupler 200.

[0170] The booster connector 600 includes a fixation wall 618 which fixes the placement of the booster 500 while being mounted on the booster coupler 200. While the booster connector 600 is mounted on the booster coupler 200, the fixation wall 618 may be disposed to be in contact with an outer circumference of the booster coupler 200.

[0171] The booster connector 600 includes an extension wall 602 disposed in line with the rear wall 580 and extended to the upper side at the lower portion of the rear wall 580. The fixation wall 618 has a structure of protruding to the rear on an upper end and both side ends of the extension wall 602.

[0172] A partial surface of the booster coupler 200 may be disposed to be in contact with the extension wall 602 and the fixation wall 618.

[0173] A fixation groove 604 having a groove on the front is formed on the extension wall 602 of the booster connector 600. A partial component of the booster coupler 200 may be inserted into the fixation groove 604.

[0174] The booster connector 600 includes a vertical wall 610 which forms a vertical surface to the ground so that the fixation groove 604 is formed on the extension wall 602. The booster connector 600 includes a horizontal wall 606 which forms a horizontal surface to the ground so that the fixation groove 604 is formed on the extension wall 602. The horizontal wall 606 is disposed at an upper end of the vertical wall 610.

[0175] One or more horizontal holes 612, 614, and 616 are formed on the vertical wall 610.

[0176] The booster connector 600 includes an additional vertical wall 611a having a surface which is in line with the vertical wall 610, and spaced to the front of the vertical wall 610. A lower end of the additional vertical wall 611a may have a shape of being bent to the front.

[0177] As the additional vertical wall 611a is spaced to the front of the vertical wall 610, an additional fixation groove may be formed at an area which forms the additional vertical wall 611a.

[0178] A first horizontal hole 612 may be formed on the vertical wall 610. A pair of additional vertical walls 611a may be provided, which are disposed in left and right directions based on the first horizontal hole 612. A second horizontal hole 614 is formed on each of the pair of additional vertical walls 611a.

[0179] The first horizontal hole 612 may be disposed between the pair of second horizontal holes 614. An area of the first horizontal hole 612 may be formed to be larger than an area of each of the pair of second horizontal holes 614.

[0180] A third horizontal hole 616 may be formed on the rear wall 580. An auxiliary vertical wall 611b may be formed in the area of the rear wall 580 in which the third horizontal hole 616 is formed. The auxiliary vertical wall 611b may have a surface which is in line with the vertical wall 610.

[0181] A pair of auxiliary vertical walls 611b in which the third horizontal hole 616 is formed may be disposed on the rear wall 580. The pair of auxiliary vertical walls 611b are disposed below the vertical wall 610, The pair of auxiliary vertical walls 611b are disposed on the front of the pair of additional vertical walls 611a.

[0182] A distance at which the pair of auxiliary vertical walls 611b are spaced apart from each other is formed to be larger than the distance at which the pair of additional vertical walls 611a are spaced apart from each other.

[0183] The pair of third horizontal holes 616 are disposed below the pair of second horizontal holes 614. A distance at which the pair of third horizontal holes 616 are spaced apart from each other is formed to be larger than the distance at which the pair of second horizontal holes 614 are spaced apart from each other.

[0184] The connection hole 584 penetrated by the terminal connector 542 is disposed between the pair of third horizontal holes 616.

[0185] The terminal connector 542 protrudes to the lower side in the vertical direction through the connection hole 584. The terminal connector 542 includes a connector cover 543 disposed on at least a part of the outer circumference of the terminal connector 542. The connector cover 543 has a structure of being disposed in line with the vertical wall 610 and extended to the lower side.

[0186] Referring to Figs. 8 and 9, the booster coupler disposed at the upper portion of the body is described.

[0187] The annular upper outlet 134 is formed at the inner side of the upper cover 155. The annular upper outlet 134 is formed between the upper cover 155 and the booster coupler 200.

[0188] The upper outlet 134 may mean an area where air flowing by the upper fan 168 is discharged to the outside of the body 100. The upper outlet 134 may be a top area of the upper cover 155. Further, the upper outlet 134 may include an opening area formed on the upper outlet cover 130 disposed at a top portion of the upper cover 155.

[0189] The upper outlet cover 130 (or "outlet cover") is fixedly disposed on the top portion of the upper cover 155. The upper outlet cover 130 may be fixed to the upper cover 155 or the booster coupler 200. The upper outlet cover 130 may be fixed to the booster coupler 200 through an outlet cover screw 131 (or "fastener"). The outlet cover 130 is coupled to the booster coupler 200 through a fastener 131 disposed in front of the booster coupler 200. The outlet cover 130 is fastened to the second support body 270 through the fastener 131.

[0190] The booster coupler 200 is disposed at the inner side of the upper cover 155. The booster coupler 200 may be disposed to be spaced at the inner side of the upper cover 155.

[0191] The booster coupler 200 has a plurality of protrusions protruding in a vertical direction or a horizontal direction so as to be coupled to the booster 500, which are disposed therein. The plurality of respective protrusions may be positioned in different directions, and may protrude in different directions.

[0192] The booster coupler 200 includes a vertical protrusion 218 protruding in the upper direction. The booster coupler 200 includes a plurality of horizontal protrusions 232, 234, and 236 protruding in the horizontal direction. The plurality of horizontal protrusions 232, 234, and 236 may be disposed at different positions.

[0193] The plurality of horizontal protrusions 232, 234, and 236 include a first horizontal protrusion 232. The plurality of horizontal protrusions 232, 234, and 236 include a pair of second horizontal protrusions 234 disposed to be spaced at both sides based on the first horizontal protrusion 232.

[0194] The booster coupler 200 includes a fixation body 210 in which the vertical protrusion 218 is disposed. The booster coupler 200 includes a movable body 230 in which the plurality of horizontal protrusions 232, 234, and 236 are disposed.

[0195] The movable body 230 is disposed to move relatively to the fixation body 210. Accordingly, as the movable body 230 moves, the location of each of the plurality of horizontal protrusions 232, 234, and 236 may also be changed. A grip 238 is disposed at one side of the movable body 230 which may be used to change the placement of the movable body 230.

[0196] The fixation body 210 includes a fixation protruding portion 216 which protrudes to the upper side so as to maintain the state in which the booster 500 is mounted. Further, the fixation protruding portion 216 includes an additional protruding portion 220 which protrudes additionally in the horizontal direction.

[0197] The vertical protrusion 218 may protrude on an upper surface of the fixation protruding portion 216. The first horizontal protrusion 232 may protrude to a front surface of the fixation protruding portion 216. The first horizontal protrusion 232 may protrude to the front of the fixation protruding portion 216 according to the placement of the movable body 230.

[0198] The second horizontal protrusion 234 may protrude to a groove formed at the additional protruding portion 220. The second horizontal protrusion 234 may protrude to the front of the additional protruding portion 220 according to the placement of the movable body 230.

[0199] The fixation protruding portion 216 may be inserted into the fixation groove 604 of the booster 500. The additional protruding portion 220 may be disposed to be in contact with the additional vertical wall 611a of the booster 500.

[0200] The booster coupler 200 includes first support bodies 250 and 260 to which the fixation body 210 is coupled. The first support bodies 250 and 260 may rotate in the circumferential direction. The fixation body 210 is fixedly disposed on the first support bodies 250 and 260. The movable body 230 is disposed between the fixation body 210 and the first support bodies 250 and 260. The movable body 230 is disposed in the fixation body 210 to move in front and rear directions. A spring for restoring the placement of the movable body 230 may be disposed between the movable body 230 and the fixation body 210.

[0201] The booster coupler 200 includes a corresponding terminal 269 connected to the terminal connector 542 of the booster 500. The corresponding terminal 269 may be disposed between the pair of third horizontal protrusion 236.

[0202] The corresponding terminal 269 may be disposed on the rotating bodies 250 and 260.

[0203] Referring to Fig. 10, a configuration of the booster coupler is described.

[0204] The rotting bodies 250 and 260 are disposed at the inner side of the upper outlet cover 130. The movable body 230 or the fixation body 210 is disposed above the rotating bodies 250 and 260.

[0205] The rotating bodies 250 and 260 include a body fastening boss 262 which protrudes to the upper side so as to be coupled to the fixation body 210. The body fastening boss 262 is disposed to penetrate the movable body 230. The body fastening boss 262 is connected to the fixation body 210 by penetrating the movable body 230.

[0206] The body fastening boss 262 may limit forward / backward movement of the movable body 230.

[0207] A spring support 264 is disposed in the rotating bodies 250 and 260. The spring support 264 may support one side of the spring 263 which is in contact with the movable body 230.

[0208] A guide wall insertion groove 266 is formed in the first support bodies 250 and 260. The guide wall insertion groove 266 has a shape of being recessed to the lower side. A lower portion of the stopper wall 222 of the fixation body 210 to be described below may be inserted into the guide wall insertion groove 266.

[0209] The fixation body 210 is disposed above the rotating bodies 250 and 260. The fixation body 210 is coupled to the rotating bodies 250 and 260. Accordingly, the placement of the fixation body 210 is not changed relatively to the rotating bodies 250 and 260.

[0210] The vertical protrusion 218 is disposed in the fixation body 210. The fixation body 210 includes the fixation protruding portion 216 which protrudes to the upper side or the front. The vertical protrusion 218 protrudes to the upper side on the upper surface of the fixation protruding portion 216.

[0211] A horizontal protrusion hole 219 at which the first horizontal protrusion 232 is disposed is formed on a front surface of the fixation protruding portion 216. An additional protruding portion 220 which protrudes to the front is disposed on the front surface of the fixation protruding portion 216. A lower side of the additional protruding portion 220 is opened, so the second horizontal protrusion 234 may be disposed at the additional protruding portion 220.

[0212] The fixation body 210 includes the stopper wall 222 inserted into the guide wall insertion groove 266 of the rotating bodies 250 and 260. The stopper wall 222 may guide a state in which the fixation body 210 is fastened to the rotating bodies 250 and 260.

[0213] When the stopper wall 222 is inserted into the guide wall insertion groove 266, the fixation body 210 may be fastened to the rotating bodies 250 and 260.

[0214] The movable body 230 may be disposed between the fixation body 210, and the rotating bodies 250 and 260. The movable body 230 includes the plurality of horizontal protrusions 232, 234, and 236 protruding to the front.

[0215] The first horizontal protrusion 232 is disposed between the pair of second horizontal protrusions 234. The pair of second horizontal protrusions 234 are disposed between the pair of third horizontal protrusions 236.

[0216] A distance at which the pair of third horizontal protrusions 236 are spaced apart from each other is formed to be larger than the distance at which the pair of second horizontal protrusions 234 are spaced apart from each other, respectively.

[0217] A boss hole 240 formed to be penetrated by the body fastening boss 262 is formed on the upper surface of the movable body 230. The boss hole 240 elongates in the front and rear directions.

[0218] The movable body 230 may move to a range of an area where the boss hole 240 is formed in the front and rear directions.

[0219] Referring to Fig. 11, components of the upper outlet cover and the booster coupler, and coupling relationships thereof are described.

[0220] The upper cover 155 has a cylindrical structure.

[0221] The top portion of the upper cover 155 and an outer peripheral end of the upper outlet cover 130 may be disposed to be in contact with each other.

[0222] The upper outlet cover 130 includes a plurality of upper outlet grills 132 extended radially. The upper outlet cover 130 includes a plurality of outer cover rims 136 connecting outer peripheral ends of the plurality of upper outer grills 132. The outer covering rim 136 has the ring shape. The outer cover rim 136 may be seated on the upper side of the upper cover 155.

[0223] The upper outlet cover 130 includes inner cover rims 138 connecting inner peripheral ends of the plurality of upper outer grills 132. The inner cover rim 138 has a ring shape with a smaller diameter than the outer cover rim 136. A cover hook 142 protruding to the lower side is disposed on the inner cover rim 138.

[0224] The upper outlet cover 130 includes a screw coupler 140 on which the outer cover screw 131 is mounted.

[0225] The cover hook 142 is mounted on one side of the booster coupler 200. The screw coupler 140 is fixed to one side of the booster coupler 200.

[0226] The booster coupler 200 includes a support body 270 having a space in which the rotating bodies 250 and 260 are disposed. The rotating bodies 250 and 260 are rotatably disposed on the support body 270. Bearings 280 are disposed between the rotating bodies 250 and 260, and the support body 270.

[0227] The bearing 280 may have a shape in which a center is opened. Accordingly, an electrical wire on which current flows may be disposed through the center of the bearing 280.

[0228] The upper outlet cover 130 is connected to the support body 270. The upper outlet cover 130 is fixedly disposed on the support body 270.

[0229] A rack gear 272 is disposed on one side surface of the support body 270.

[0230] The rotating bodies 250 and 260 are rotatably disposed at the inner side of the support body 270.

[0231] The rotating bodies 250 and 260 have a rotary motor 258 and a rotary gear 259 disposed therein. The rotary gear 259 rotates by the rotary motor 258. The rotary gear 259 is disposed to engage with the rack gear 272.

[0232] The rotary motor 258 is fixedly disposed on the rotating bodies 250 and 260. Accordingly, the rotary gear 259 rotates by actuating the rotating bodies 250 and 260, so the rotating bodies 250 and 260 may rotate inside the support body 270.

[0233] The corresponding terminal 269 is disposed on the upper surfaces of the rotating bodies 250 and 260. The rotating bodies 250 and 260 may be fastened with the stopper wall 222 inserted into the guide wall insertion groove 266 with a screw. The spring support 264 is disposed on the upper surfaces of the rotating bodies 250 and 260. The spring 263 is disposed between the spring protrusion 268 and the spring support 264 disposed at the inner side of the movable body 230. The spring 263 may restore the placement of the movable body 230.

[0234] The rotating bodies 250 and 260 include a lower rotating body 250 inside the support body 270 and an upper rotating body 260 disposed above the lower rotating body 250.

[0235] The lower rotating body 250 is disposed above the bearing 280. The rotary motor 258 is fixedly disposed on the lower rotating body 250. The upper rotating body 260 is coupled to the lower rotating body 250. The corresponding terminal 269 is disposed on the upper rotating body 260. The spring support 264 is disposed on the upper rotating body 260.

[0236] The body fastening boss 262 is disposed on the upper rotating body 260.

[0237] The stopper wall 222 may be disposed to be in contact with the movable body 230. The stopper wall 222 may limit forward movement of the movable body 230. The stopper wall 222 may perform a stopper function of the movable body 230.

[0238] Referring to Fig. 12, a structure of the fixation body is described.

[0239] The fixation body 210 includes an upper surface 212 forming an inclination surface to be in contact with the extension wall 602 of the booster connector 600. The upper surface 212 may have a step at a partial area.

[0240] The fixation body 210 includes a circumferential surface 214 extended to the lower side on an outer circumference of the upper surface 212. The circumferential surface 214 may be in contact with the fixation wall 618 of the booster connector 600. The fixation wall 618 of the booster connector 600 is disposed to be in contact with an outer side of the circumferential surface 214.

[0241] Since the fixation wall 618 is disposed in a structure to cover a circumference of the circumferential surface 214, the booster 500 may be maintained to be disposed at the upper side of the body 100.

[0242] A boss connector 226 includes a boss connector extended to the lower side so as to be connected to the body fastening boss 262. The boss connector 226 has a structure of being extended to a lower side at which the body fastening boss 262 is disposed from the upper surface 212 or the fixation protruding portion 216.

[0243] The fixation body 210 includes the fixation protruding portion 216 which protrudes the front and the upper side on the upper surface 212. The fixation protruding portion 216 may be inserted into the fixation groove 604 of the booster 600.

[0244] The vertical protrusion 218 is disposed on an upper surface of the fixation protruding portion 216. The vertical protrusion 218 protrudes to the upper side on the upper surface of the fixation protruding portion 216. When the booster 500 is mounted on the body 100, the vertical protrusion 218 is inserted into a vertical hole 608 of the booster connector 600.

[0245] The horizontal protrusion hole 219 opened in in the front and rear directions may be formed o n a front surface of the fixation protruding portion 216. The first horizontal protrusion 232 of the movable body 230 is disposed at the horizontal protrusion hole 219.

[0246] An additional protruding portion 220 which protrudes to the front on the front surface is disposed on the fixation protruding portion 216. A pair of additional protruding portions 220 are disposed at left and right sides of the horizontal protrusion hole 219. The pair of additional protruding portion 220 may be in contact with the additional vertical wall 611a of the booster connector 600.

[0247] Lower sides of the pair of additional protruding portion 220 may be opened to be penetrated by the pair of second horizontal protrusion 234.

[0248] The fixation body 210 includes a stopper wall 222 extended to the lower side on the front of the fixation protruding portion 216. The stopper wall 222 is extended to the lower side of the horizontal protrusion hole 219. The stopper wall 222 includes an end wall 224 bent to the front on a lower end. The end wall 224 is in contact with the upper surfaces of the rotating bodies 250 and 260. At areas where the end wall 224 and the upper surfaces of the rotating bodies 250 and 260 are in contact with each other, the fixation body 210, and sides of the rotting bodies 250 and 260 may be coupled through a fastening screw.

[0249] Referring to Fig. 13, a structure of the movable body is described.

[0250] The movable body 230 includes a plurality of horizontal protrusions 232, 234, and 236 protruding to the front. The upper surface of the movable body 230 forms an inclination surface. The upper surface of the movable body 230 may be disposed to be in contact with a lower end of the circumferential surface 214 of the fixation body 210.

[0251] The movable body 230 includes a first horizontal protrusion 232 protruding to the front. The movable body 230 includes a pair of second horizontal protrusions 234 spaced from the first horizontal protrusion 232 in the left and right directions.

[0252] The first horizontal protrusion 232 may be formed in a size larger than each of the pair of second horizontal protrusion 234. Each of the pair of second horizontal protrusions 234 is disposed to protrude to the front of the first horizontal protrusion 232. The first horizontal protrusion 232 is disposed between the pair of second horizontal protrusions 234.

[0253] The movable body 230 includes a pair of third horizontal protrusion 236 disposed to be spaced in the left and right directions and to the front from the pair of second horizontal protrusion 234, respectively.

[0254] The pair of third horizontal protrusions 234 are disposed to protrude to the front of the pair of second horizontal protrusions 234, respectively. The pair of third horizontal protrusions 234 are disposed below the pair of second horizontal protrusions 234, respectively. A distance at which the pair of third horizontal protrusions 236 are spaced apart from each other is formed to be larger than the distance at which the pair of second horizontal protrusions 234 holes 234 are spaced apart from each other, respectively.

[0255] The movable body 230 includes a spacing protrusion disposed to be spaced to the front of the pair of second horizontal protrusions 234, respectively. A grip 238 may be disposed at one side of a circumferential surface of the movable body 230. The user may change the placement of the movable body 230 through the grip 238.

[0256] The upper surface of each of the plurality of horizontal protrusion 232, 234, and 236 may have an inclined form.

[0257] A boss hole 240 formed to be penetrated by the body fastening boss 262 is formed on the upper surface of the movable body 230. The boss hole 240 elongates in the front and rear directions. The movable body 230 may move to a range of an area where the boss hole 240 is formed in the front and rear directions.

[0258] Referring to Fig. 14, configurations of the lower rotating body and the support body are described.

[0259] The rotating bodies 250 and 260 are rotatably disposed at the inner side of the support body 270. The support body 270 has a bowl shape, and the lower rotating body 250 is disposed inside the support body 270. The support body 270 may fix the upper outlet cover 130.

[0260] The rack gear 272 is formed at one side of an inner circumferential surface of the support body 270.

[0261] The support body 270 is coupled to the upper outlet cover 130 through the outlet cover screw 131 on the front.

[0262] The lower rotating body 250 is disposed at the inner side of the support body 270. The lower rotating body 250 has the rotary motor 258, and the rotary gear 259 which rotates while being mounted on the rotary motor 258 disposed therein. The rotary gear 259 engages with the rack gear 272 to change the placement of the lower rotating body 250.

[0263] The lower rotting body 250 includes an inner fastening boss 252 which protrudes to the upper side so as to be coupled to the upper rotting body 260. The inner fastening boss 252 has a structure of protruding to the upper side from a bottom surface of the lower rotating body 250.

[0264] A bearing fixation portion 254 coupled to the bearing 280 is formed on the bottom surface of the lower rotating body 250. The bearing fixation portion 254 may be disposed to be spaced from a center of the lower rotating body 250 further than the inner fastening boss 252.

[0265] The bearing fixation portion 254 may be coupled to the bearing 280 through a separate fastening screw.

[0266] A first electrical wire hole 256 penetrated by the electrical wire is formed on the bottom surface of the lower rotating body 250. A second electrical wire hole 282 penetrated by the electrical wire is also formed below the lower rotating body 250.

[0267] A center of the first electrical wire hole 256 and a center of the second electrical wire hole 282 may be formed at different positions. The center of the first electrical wire hole 256 may be disposed to be spaced to the front of the center of the second electrical wire hole 282.

[0268] Referring to Fig. 15, configurations of the lower rotating body and the support body are described.

[0269] The support body 270 includes a cover coupler 274 protruding to the front at an upper end portion and coupled to the upper outlet cover 130. The cover coupler 274 is coupled to the upper outlet cover 130 through the outlet cover screw 131.

[0270] A cover hook 142 of the upper outlet cover 130 is inserted into the upper end portion of the support body 270. The support body 270 forms a space where the lower rotating body 250 and the bearing 280 are disposed. The support body 270 may have a bowl form which is recessed to the lower side.

[0271] The rack gear 272 is formed on an inner circumferential surface of the support body 270. A third electrical wire hole 275 penetrated by the electrical wire is formed on one side of a bottom surface of the support body 270. The third electrical wire hole 275 is disposed on the rear of the bottom surface of the support body 270.

[0272] The bearing 280 is disposed between the support body 270 and the lower rotating body 250. In the bearing 280, a bearing upper part 284 is coupled to the lower rotating body 250 and a bearing lower part 286 is coupled to the support body 270.

[0273] The bearing 280 may support the lower rotating body 250 to rotate inside the second support body 270. The second electrical wire hole 282 is formed at a center of the bearing 280.

[0274] The lower rotating body 250 has a space where the rotary motor 258 and the rotary gear 259 are disposed therein. The first electrical wire hole 256 is formed on the bottom surface of the lower rotating body 250. The center of the first electrical wire hole 256 may be disposed to be spaced to the front of the center of the second electrical wire hole 282.

[0275] An internal step 158 is formed at the upper end so that the upper end of the upper outlet cover 130 is seated.

[0276] Referring to Fig. 16, the upper outlet cover separated from the upper cover or the booster coupler is described.

[0277] The upper outlet cover 130 may be separated to the upper side from the upper cover 155. The upper outlet cover 130 may be separated to the upper side from the booster coupler 200.

[0278] The upper outlet cover 130 includes the cover hook 142 inserted into the booster coupler 200.

[0279] The upper outlet cover 130 includes a screw coupler 140 fixed to the booster coupler 200 by a fastening screw. A separate fastening screw penetrates the screw coupler 140 to be fastened to a cover coupler 274 of the support body 270.

[0280] A hook hole 276 into which the cover hook 142 is inserted is formed at the upper end portion of the support body 270. The hook hole 276 includes a first hook hole 276a into which the cover shook 142 is inserted and a second hook hole 276b which limits upward movement of the cover hook 142.

[0281] The hook hole 276 may be formed at a smaller gap than a lower end portion of the cover hook 142 of the second hook hole 276b. Accordingly, upward movement of the cover hook 142 disposed at the second hook hole 276b may be limited.

[0282] When the cover hook 142 is disposed at the second hook hole 276b, the screw coupler 140 is disposed above the cover coupler 274.

[0283] Referring to Figs. 17 and 18, the upper outlet cover is described.

[0284] The upper outlet cover 130 includes a plurality of upper outlet grills 132 extended radially, an outlet cover rim 136 connecting outer peripheral ends of the plurality of upper outlet grills 132, and an inner cover rim 138 connecting inner peripheral ends of the plurality of upper outlet grills 132.

[0285] A cover hook 142 extended to the lower side is disposed on the inner cover rim 138. A plurality of cover hooks 142 spaced in a circumferential direction are disposed on the inner cover rim 138.

[0286] The cover hook 142 includes a hook protrusion 144 protruding to a radial inner side on a lower end portion thereof. The hook protrusion 144 may limit upward movement of the cover hook 142 disposed at the second hook hole 276b among the hook holes 276 formed in the support body 270.

[0287] The upper outlet cover 130 includes the screw coupler 140 coupled to the support body 270 by the fastening screw. The screw coupler 140 is disposed at one side of one of the plurality of cover hooks 142. The screw coupler 140 may be disposed in one area where a plurality of upper outlet grills 132 are formed.

[0288] The screw coupler 140 may be disposed at a front portion upper outlet cover 130.

[0289] An upper step 137 which protrudes at an upper end portion is formed on an outer peripheral end of the outer cover rim 136. The upper step 137 is disposed above the internal step 158 of the upper cover 155.

[0290] Referring to Figs. 19 and 20, placement of a plurality of horizontal protrusion according to movement of a movable body is described.

[0291] As illustrated in Fig. 19, a position of the movable body 239 in a state in which a separate external force is not applied to the movable body 230 may be set to a first position P1.

[0292] As illustrated in Fig. 20, a position of the movable body 230 which moves to the rear as the external force 230 is applied to the movable body 230 may be a second position P2.

[0293] When the movable body 230 is at the first position P1, the plurality of horizontal protrusion 232, 234, and 236 may protrude to the front body 210. Further, when the movable body 230 is at the second position P2, the plurality of horizontal protrusion 232, 234, and 236 may be disposed on the inner side of the fixation body 210.

[0294] When the movable body 230 is at the second position P2, the booster 500 may move in the upper and lower directions. When the movable body 230 is at the first position P1, upward movement of the booster 500 may be limited.

[0295] While the embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the aforementioned specific embodiments, various modifications may be made by a person with ordinary skill in the technical field to which the present disclosure pertains without departing from the subject matters of the present disclosure that are claimed in the claims, and these modifications should not be appreciated individually from the technical spirit or prospect of the present disclosure.

Claims

1. An air purifier comprising: a body (100) having an inlet (112) formed on an circumferential surface thereof and an outlet (134) formed on an upper surface thereof; and a booster (500) disposed on the body (100) and switching a flow direction of air which flows through the outlet (134), wherein the body (100) includes: an inlet cover (110) disposed on a circumferential surface and having the inlet (112); an outlet cover (134) disposed on an upper surface and having the outlet (134) the outlet cover (134) disposed above the inlet cover (110); an upper cover (155) disposed between the outlet cover (134) and the inlet cover (110); a blowing device (160) disposed inside the inlet cover (110) or the upper cover (155), and forming air flowing from the inlet (112) to the outlet (134); and a booster coupler (200) disposed at an upper side of the blowing device (160) and coupled to the booster (500), and wherein an outer peripheral end of the outlet cover (134) is seated on an upper side of the upper cover (155) and an inner peripheral end of the outlet cover is coupled to the booster coupler (200).

2. The air purifier of claim 1, wherein the outlet cover (134) includes a cover hook (142) inserted into the booster coupler (200).

3. The air purifier of claim 2, wherein the booster coupler includes a hook hole (276) into which the cover hook (142) is inserted, and wherein the hook hole (276) is extended in a circumferential direction, and a width of the hook hole (276) changed according to its circumferential a position.

4. The air purifier of claim 3, wherein the hook hole (276) includes a first hook hole (276a) into which the cover hook (142) is inserted, and a second hook hole (276b) extended from the first hook hole (276a) and limiting upward movement of the cover hook (142).

5. The air purifier of one of claims 1 to 4, wherein the outlet cover (134) includes a plurality of outlet grills (132) extended radially, an outlet cover rim (136) connecting an outer peripheral end of each of the plurality of outlet grills (132), and seated on the upper side of the upper cover (155), and an inner cover rim (138) connecting an inner peripheral end of the plurality of outer grills (132), and coupled to the booster coupler (200).

6. The air purifier of claim 5, wherein each of the plurality of outer grills (132) has a form of being inclined downward toward the inner cover rim (138) from the outer cover rim (136).

7. The air purifier of claim 5 or 6, wherein a fastening portion (131) fastened to the booster coupler (200) is disposed in at least some of the plurality of outlet grills (132).

8. The air purifier of claim 7, wherein when the booster (500) is coupled to the booster coupler (200), the fastening portion (131) is disposed at a lower side of the booster.

9. The air purifier of claim 7 or 8, wherein a hook hole (276) into which the cover hook (142) of the outlet cover (134) is inserted is formed in the booster coupler (200), and wherein the fastening portion (131) is disposed outside a radial direction of the hook hole (276).

10. The air purifier of one of claims 5 to 9, wherein an upper step (137) protrudes form an upper end portion of an outer peripheral end of the outer cover rim (136), and wherein the upper step (137) is seated on an upper end portion of the upper cover (155).

11. The air purifier of claim 10, wherein the upper cover (155) includes an internal step (158) which protrudes inward so that the upper step is seated.

12. The air purifier of one of claims 5 to 11, wherein the outlet cover (130) includes a plurality of cover hooks (142) which protrude to a lower side of the inner cover rim (138), and the plurality of cover hooks (142) are disposed to be spaced apart from each other in the circumferential direction.

13. The air purifier of claim 12, wherein each of the plurality of cover hooks (142) includes a hook protrusion (144) which protrudes outward in the radial direction on a lower end portion thereof.

14. The air purifier of one of claims 1 to 13, wherein the booster coupler (200) includes: a rotating body (250, 260) which changes a direction faced by the booster to the circumferential direction: and a support body (270) forming a space where the rotating body (250, 260) is disposed, and wherein the outlet cover (130) is coupled to the support body (270).

15. The air purifier of claim 14, wherein a rotary motor (258) fixedly disposed in the rotating body (250, 260) and a rotary gear (259) which rotates by the rotary motor (258) are disposed at an inner side of the rotating body (250, 260), wherein a rack (272) engaging with the rotary gear (259) is disposed on an inner peripheral surface of the support body (270), wherein the rotating body (250, 260) includes a corresponding terminal (269) electrically connected to the booster (500), and wherein the rack (272) is disposed in an opposite direction to the corresponding terminal (269) based on a rotary center of the rotating body (250, 260).

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