Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner. The indoor unit comprises a shell; the hinge part is arranged on the inner side of the shell; the housing includes: a rotating portion forming a part of the housing and rotating about a shaft of the hinge portion to open and close; and a fixed part which forms a part of the housing and is formed corresponding to the rotating part. The indoor unit of the air conditioner comprises a rotating roller, and the rotating roller is arranged on the lower side of the rotating part and rolls along with rotation of the hinge part. According to the utility model, the opening and closing actions of the air supply fan assembly can be easily executed.

Description

Technical Field

[0001] This utility model relates to an indoor unit of an air conditioner, and more specifically, to an indoor unit of a vertical air conditioner. Background Technology

[0002] Typically, an air outlet can be formed at the front of the air conditioner, and an air conditioning unit such as a heat exchanger and filter can be installed inside the air conditioner to change the temperature, humidity or cleanliness of the air, and an air supply device can be installed to make the air flow.

[0003] The air conditioners used in residential buildings are mainly split-type air conditioners. The indoor unit of a split-type air conditioner is equipped with an indoor heat exchanger and an indoor fan, while the outdoor unit is equipped with an outdoor heat exchanger, an outdoor fan, a compressor, etc. The indoor and outdoor units are connected by refrigerant piping. Split-type air conditioners can be divided into wall-mounted and floor-standing types according to the shape of the indoor unit.

[0004] Due to the improvement of modern people's living standards and abnormal temperature phenomena, the frequency of using indoor units of standing air conditioners is increasing dramatically.

[0005] As demand increases, respiratory illnesses caused by odors and dirt inside air conditioner indoor units are on the rise. Consequently, the focus on indoor unit cleaning is growing year by year, making frequent cleaning to maintain thorough cleanliness increasingly important. In particular, keeping the heat exchanger or fan inside the indoor unit, which handles the intake airflow, extremely clean is crucial.

[0006] However, the main components of existing vertical air conditioner indoor units are connected to the casing through fastening mechanisms, making indoor unit management difficult and resulting in poor cleaning. This accelerates indoor unit pollution, leading to problems such as odor and bacterial growth that can cause respiratory diseases.

[0007] In addition, compared to the area of ​​the bottom surface of the product, the height of the existing vertical air conditioner indoor unit is much higher, and the center of gravity is located in the upper casing due to the heavier components, which inevitably makes it easy to tip over.

[0008] Patent Document 1: Korean Patent Publication No. 1016-0087303 (July 21, 2016) Utility Model Content

[0009] The purpose of this invention is to enable the opening and closing of the air supply fan assembly by setting a hinge and a roller bracket, making cleaning and management easier, and to stably support the air supply fan assembly to prevent the indoor unit of the air conditioner from tipping over. Here, the hinge enables the air supply fan assembly to open and close relative to the protective housing, and the roller bracket includes a rotating roller that can roll along the horizontal base on the outlet side of the protective housing and support the load of the air supply fan assembly.

[0010] In addition, the purpose of this utility model is to maintain the fixed state of the air supply fan assembly by setting a locking part at a specific open position of the air supply fan assembly to restrict the rolling of the rotating roller, and to prevent the center of gravity from moving to the outside of the indoor unit, thereby effectively maintaining the balance of the indoor unit of the air conditioner and preventing it from tipping over.

[0011] In order to achieve the above-mentioned objective, the present invention is characterized in that, when the air supply fan assembly is opened relative to the protective housing via the hinge portion, the rotating roller mounted on the roller bracket rolls along the horizontal base separating the upper housing and the lower housing, and is able to distribute the load of the air supply fan assembly to the horizontal base.

[0012] Specifically, since the rotating rollers roll along the horizontal base when the air supply fan assembly is open, the horizontal base stably supports the air supply fan assembly, reducing the load on the air supply fan assembly applied to the hinge and preventing the indoor unit from easily tipping over due to the load of the air supply fan assembly.

[0013] The indoor unit of an air conditioner includes: a housing; a hinge portion disposed inside the housing; a rotating portion forming part of the housing, which rotates about the axis of the hinge portion to open and close; a fixed portion forming part of the housing and correspondingly formed to the rotating portion; and a rotating roller disposed below the rotating portion and rolling as the hinge portion rotates. According to an embodiment of the present invention, the housing may include: an upper housing; and a lower housing supporting the upper housing.

[0014] According to an embodiment of the present invention, the upper housing may include: a heat exchange assembly for exchanging heat with air flowing in through the intake port; a fan assembly for drawing in air that has passed through the heat exchange assembly; and a protective housing for guiding the air that has passed through the heat exchange assembly to the fan assembly.

[0015] According to an embodiment of the present invention, the bracket body is a hollow cover shape and may include: a first vertical plate, which is vertically disposed and installed on the inlet side of the air supply fan assembly and is connected to the inlet side of the air supply fan assembly; a horizontal plate, which is bent at a right angle from the upper end of the first vertical plate and extends horizontally; and a second vertical plate, which is formed at a predetermined interval from the air supply fan assembly and connected between the first vertical plates.

[0016] According to an embodiment of the present invention, the corner where the first vertical plate and the second vertical plate of the bracket body intersect is bent into an arc shape.

[0017] According to an embodiment of the present invention, a horizontal base is supported at the lower end of the protective housing, and the rotating roller rolls along the top surface of the horizontal base. A cutting portion can be formed on the rotation trajectory of the rotating roller at the lower end of the protective housing. According to an embodiment of the present invention, roller support portions supporting both ends of the rotating roller can be provided on the bracket body.

[0018] According to an embodiment of the present invention, the roller support portion has a roller insertion groove and a shaft support groove. The rotating roller is inserted into the roller insertion groove, and the rotating shaft of the rotating roller is inserted into the shaft support groove and supported by the shaft support groove.

[0019] According to an embodiment of the present invention, a locking portion may be further included. The locking portion is disposed within the rotation trajectory of the rotating roller relative to the horizontal base and restricts the rolling of the rotating roller at a specific open position of the air supply fan assembly. According to an embodiment of the present invention, the locking portion may protrude upwards from the top surface of the horizontal base to keep the rotating roller in a fixed state. According to an embodiment of the present invention, a pair of locking portions may be formed to restrict the movement of the rotating roller when the opening and closing angles of the air supply fan assembly are 60° and 90°, respectively.

[0020] According to an embodiment of the present invention, the locking part may include: a first locking part, which restricts the rotating roller when the opening and closing angle of the air supply fan assembly is 90°; and a second locking part, which can be disposed on the rotation trajectory of the rotating roller corresponding to the first locking part, to restrict the rotating roller so as to prevent the rotating roller restricted by the first locking part from returning to the state before restriction.

[0021] According to an embodiment of the present invention, the locking part may include: a third locking part, which restricts the rotating roller when the opening and closing angles of the air supply fan assembly are 60°; and a fourth locking part, which can be configured on the rotation trajectory of the rotating roller corresponding to the third locking part, to restrict the rotating roller so as to prevent the rotating roller restricted by the third locking part from returning to the state before restriction.

[0022] According to an embodiment of the present invention, a wire can be connected between the air supply fan assembly and the protective housing.

[0023] According to an embodiment of the present invention, the wire can be connected to a wire fixing part respectively disposed at the lower end of the air supply fan assembly and the lower end of the protective housing.

[0024] According to an embodiment of the present invention, the line can be subjected to maximum tensile force and kept taut when the opening and closing angle of the air supply fan assembly is a maximum of 60° or a maximum of 90°.

[0025] According to an embodiment of the present invention, the rotating part is formed by the entire front side of the housing, and a rotating roller that rolls relative to the ground may be provided at the lower end of the rotating part.

[0026] According to the indoor unit of the air conditioner of this utility model with the configuration described above, the air supply fan assembly can be opened and closed relative to the protective housing via the hinge, thereby enabling easy cleaning of the air supply module.

[0027] By setting roller brackets, locking parts, and lines as limiting means, the opening action of the air supply fan assembly can be easily performed, the supporting action of the air supply fan assembly can be stably performed, and the indoor unit can be prevented from easily tipping over due to the load of the air supply fan assembly. Here, the roller bracket includes a rotating roller that can roll along the horizontal base on the outlet side of the protective housing and support the load of the air supply fan assembly, and the locking part restricts the rolling of the rotating roller.

[0028] In addition, it can reduce the load on the air supply fan assembly applied to the hinge when the air supply fan assembly is open. Attached Figure Description

[0029] Figure 1 This is a front perspective view of the indoor unit of the air conditioner according to an embodiment of the present utility model.

[0030] Figure 2 This is a rear perspective view of the indoor unit of the air conditioner according to an embodiment of the present utility model.

[0031] Figure 3 This is a front perspective view showing the indoor unit of the air conditioner in an embodiment of the present invention with the side door open.

[0032] Figure 4 This is an exploded perspective view of the indoor unit of the air conditioner according to an embodiment of the present utility model.

[0033] Figure 5 It is along Figure 1 A sectional view taken along line 6-6.

[0034] Figure 6 This is a perspective view of the air supply fan assembly of the indoor unit of an air conditioner according to an embodiment of the present invention.

[0035] Figure 7 This is a perspective view showing the indoor unit of an air conditioner in an open state according to an embodiment of the present invention.

[0036] Figure 8 It is along Figure 3 A sectional view taken along line 21-21.

[0037] Figure 9 This is a cross-sectional perspective view of the side door module according to an embodiment of the present utility model.

[0038] Figure 10 This is a perspective view showing the side blade module of an embodiment of the present invention.

[0039] Figure 11 and Figure 12 This is a perspective view showing the hinge portion of an embodiment of the present invention.

[0040] Figure 13 and Figure 14 This is a perspective view showing the hinge portion and roller bracket of an embodiment of the present invention.

[0041] Figure 15 This is a bottom perspective view showing a roller bracket according to an embodiment of the present invention.

[0042] Figure 16 This is a perspective view illustrating a limiting means for restricting the rotational movement of a roller bracket according to an embodiment of the present invention.

[0043] Figure 17 This is a diagram showing the locking part of the limiting rotating roller according to an embodiment of the present invention.

[0044] Figure 18 This is a perspective view showing the indoor unit of an air conditioner in an open state according to another embodiment of the present invention. Detailed Implementation

[0045] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings of the indoor unit of the air conditioner used to illustrate various embodiments of the present invention.

[0046] Figure 1This is a front perspective view of the indoor unit of the air conditioner according to an embodiment of the present invention. Figure 2 This is a rear perspective view of the indoor unit of the air conditioner according to an embodiment of the present invention. Figure 3 This is a front perspective view showing the indoor unit of the air conditioner in an embodiment of the present invention with the side door open. Figure 4 This is an exploded perspective view of the indoor unit of the air conditioner according to an embodiment of the present utility model.

[0047] First, refer to Figures 1 to 4 The overall structure of the components constituting the indoor unit of this utility model embodiment will be described, and the structure of each component will be described.

[0048] [Definition of direction]

[0049] The indoor unit of the air conditioner according to this embodiment can be configured to draw in air through the intake port 1210, and the drawn-in air undergoes heat exchange while passing through the heat exchanger 3100. The air that undergoes heat exchange in the heat exchanger 3100 can be discharged through the exhaust port 2111 after passing through the blower fans 212, 222, and 232.

[0050] The direction in which the air drawn in from the intake 1210 flows toward the heat exchanger 3100 and the blower fans 212, 222, and 232 can be defined as "forward". In this case, it can be understood that the air flows forward from the intake 1210 toward the heat exchanger 3100 and forward from the heat exchanger 3100 toward the blower fans 212, 222, and 232.

[0051] Conversely, the direction from the blower fans 212, 222, 232 through the heat exchanger 3100 toward the intake port 1210 can be defined as "rear".

[0052] The direction in which air flows from the blower fans 212, 222, and 232 toward the outlet 2111 can be defined as "lateral". When there are multiple outlets 2111, it can be understood that any one of the multiple outlets 2111 is located on the "side" or "left side" of the blower fans 212, 222, and 232, while another outlet 2111 is located on the "other side" or "right side" of the blower fans 212, 222, and 232.

[0053] The indoor unit may include: a flow generating section, forming a space for the heat exchanger 3100 and the air supply fans 212, 222, 232; and a machine room, in which a control box or drainage pipes for the operation of the indoor unit are disposed. The orientation of the flow generating section and the machine room can be defined as vertical. In particular, the flow generating section may be located above the machine room, and the machine room may be located below the flow generating section.

[0054] On the other hand, the indoor unit also includes storage areas such as decorative cabinet shelves, and the direction in which the flow generating section and the storage area are arranged can be defined as "vertical direction". In particular, the flow generating section can be located above the storage area, and the storage area can be located below the flow generating section.

[0055] From another perspective, multiple air supply fans 212, 222, and 232 can be provided, and the direction in which multiple air supply fans 212, 222, and 232 are arranged can be defined as the up and down direction.

[0056] [Overall Structure of the Indoor Unit]

[0057] The indoor unit of the air conditioner according to this embodiment may include: a housing assembly 1000 forming an outer shape; a fan assembly 2000 disposed inside the housing assembly 1000 to create airflow; a heat exchange assembly 3000 to allow the air flowing under the action of the fan assembly 2000 to exchange heat with the refrigerant; and a filter assembly 4000 to filter the air flowing into the inside of the housing assembly 1000.

[0058] [Housing Assembly]

[0059] The housing assembly 1000 of this embodiment includes a main rear housing 1200, which has an intake port 1210 for air to be drawn in from the rear. An installation space for a heat exchange assembly 3000, configured with a heat exchanger 3100, is formed on the inner side of the main rear housing 1200. The main rear housing 1200 forms the upper rear appearance of the indoor unit. Since the heat exchange assembly 3000 is housed inside the main rear housing 1200, it can be referred to as a heat exchanger housing.

[0060] The housing assembly 1000 includes a main front housing 1100, which is disposed in front of the main rear housing 1200 to form an upper front appearance. Major components such as a heat exchange assembly 3000 and a filter assembly 4000 can be disposed inside the housing assembly 1000.

[0061] The front shell 1100 and the back shell 1200 of the main body can be referred to as the upper shell 1100 and 1200, respectively. For ease of explanation, the back shell 1200 of the main body can also be referred to as the first shell, and the front shell 1100 of the main body can be referred to as the second shell.

[0062] Additionally, the housing assembly 1000 includes a lower housing 5000 disposed below the upper housings 1100 and 1200. A space for a mechanical chamber is formed inside the lower housing 5000, and the lower housing 5000 supports the upper housings 1100 and 1200.

[0063] An intake port 1210 is formed on the rear side of the upper housing 1100, 1200, for drawing in indoor air from the room where the indoor unit is installed. The intake port 1210 can be formed on the back side of the rear housing 1200 with a defined area.

[0064] When the air supply fan assembly 2000 drives the air to flow, indoor air is drawn in through the intake port 1210, and the drawn-in air flows to the air supply module section 2100 of the air supply fan assembly 2000 through the heat exchanger 3100 of the heat exchange assembly 3000 configured on the inlet side of the air supply fan assembly 2000.

[0065] The main front housing 1100 of the upper housing 1100 and 1200 includes a display unit 1110 for displaying the operating status of the indoor unit or inputting user commands. Considering the user's line of sight, the display unit 1110 of this embodiment can be configured to correspond to the user's eye level.

[0066] Spaces for arranging the air supply fan assembly 2000 and the heat exchange assembly 3000 are formed inside the upper housings 1100 and 1200.

[0067] The air supply fan assembly 2000 of this utility model embodiment can be configured at the rear of the front housing 1100 of the main body, and the heat exchange assembly 3000 can be configured at the front of the rear housing 1200 of the main body.

[0068] Figure 5 It is along Figure 1 A sectional view taken along line 6-6.

[0069] Figure 5 This is a cross-sectional view showing the heat exchange assembly and lower housing of the indoor unit of an air conditioner according to an embodiment of the present invention.

[0070] Reference Figure 5 The lower housing 5000 is located below the upper housings 1100 and 1200, supported on the ground where the indoor unit is installed, and also supports the upper housings 1100 and 1200.

[0071] The lower housing 5000 includes: a control box having control components for operating the air conditioner; and a lower housing body 5100, which forms space for piping such as drain pipes for the flow of condensate generated in the heat exchanger 3100. The control box is located at the center of the inner side of the lower housing body 5100 and can be supported by the lower housing body 5100.

[0072] The lower housing body 5100 is in the shape of a box with an open front and is supported on the ground. Inside the lower housing body 5100, there are spaces such as a machine room.

[0073] The lower housing 5000 includes a base back face portion 5400 that forms the rear appearance of the lower part of the indoor unit.

[0074] The base back face portion 5400 is formed in a substantially "C" shape so as to be able to cover the sides and the rear of the lower housing 5000. The base back face portion 5400 is disposed on the outside of the lower housing 5000 and can strengthen the rigidity of the lower housing 5000.

[0075] In the base back face portion 5400, a refrigerant pipe hole 5401 through which the refrigerant pipe 3200 of the heat exchange component 3000 passes and a drain pipe hole 5402 through which a drain pipe for discharging the condensed water generated by the heat exchanger 3100 pass may be formed. Such refrigerant pipe hole 5401 and drain pipe hole 5402 may be formed in communication with the lower housing main body 5100.

[0076] The lower housing 5000 may further include a storage portion 5200 provided in front of the lower housing main body 5110.

[0077] The lower housing 5000 includes a base front face portion 5300, and the base front face portion 5300 is coupled to the front of the opening of the lower housing main body 5100 to form the lower front appearance.

[0078] The base front face portion 5300 can cover the open front of the storage portion 5200. The base front face portion 5300 is disposed on the outside of the lower housing 5000 and can strengthen the rigidity of the lower housing 5000.

[0079] The upper housings 1100, 1200 including the main body front housing 1100 and the main body back housing 1200 arranged vertically up and down may be combined with the lower housing 5000 including the lower housing main body 5100, the base front face portion 5300, and the base back face portion 5400 to form the indoor unit of the floor-standing air conditioner.

[0080] [Air supply fan assembly]

[0081] Figure 6 is a perspective view showing the air supply fan assembly of the indoor unit of an air conditioner according to an embodiment of the present invention, Figure 7 is a perspective view showing the open state of the indoor unit of an air conditioner according to an embodiment of the present invention, Figure 8 is a top cross-sectional view of the indoor unit of an air conditioner according to an embodiment of the present invention.

[0082] Referring to Figures 6 to 8 , the air supply fan assembly 2000 is disposed behind the main body front housing 1100. In addition, the air supply fan assembly 2000 is disposed in front of the main body back housing 1200.

[0083] The air supply fan assembly 2000 includes an air supply module 2100 that discharges air to the front of the indoor unit. Preferably, a plurality of air supply modules 2100 are provided; in an embodiment of the present invention, three air supply modules 2100 are provided.

[0084] Since the indoor unit is a vertically oriented unit that extends longitudinally, the air supply module 2100 can be configured vertically.

[0085] The air supply module 2100 is positioned in front of the heat exchange assembly 3000 and can discharge the air undergoing heat exchange in the heat exchange assembly 3000 to the side outlet 2111 formed in the discharge section 2110. At this time, the flow direction of the flowing air can be changed by the side blade module 2200 disposed in the side outlet 2111.

[0086] The side outlet 2111 can be provided with an outlet grille 2112.

[0087] The air supply module 2100 of this utility model embodiment may include a first air supply module 210, a second air supply module 220 and a third air supply module 230.

[0088] The first air supply module 210 can blow air out of the side outlet 2111.

[0089] The first air supply module 210 includes: a first air supply motor 211, providing rotational power; a first air supply fan 212, connected to the first air supply motor 211; and a first air supply housing 213, supporting the first air supply fan 212 so that it can rotate, and the first air supply housing 213 is disposed on the outside of the first air supply fan 212 to guide the movement of air.

[0090] Air passing through the heat exchanger 3100 of the heat exchange assembly 3000 moves toward the inside of the first air supply housing 213. Furthermore, air expelled to the outside of the first air supply housing 213 by the operation of the first air supply fan 212 can flow toward the side outlet 2111 and be expelled to the outside.

[0091] The first air supply fan 212 may include a centrifugal fan that draws in air axially and discharges it radially.

[0092] The first air supply fan 212 may include a hub 212a that is coupled to and rotates with the motor shaft of the first air supply motor 211. The hub 212a may include a shaft coupling portion 212d that is coupled to the motor shaft.

[0093] Hub 212a may have a rearwardly protruding bowl shape to form a space for accommodating the first air supply motor 211.

[0094] The shaft coupling portion 212d is located at the center of the hub 212a and can be coupled to the motor shaft passing through the hub 212a. The hub 212a and the motor shaft 212d can be firmly coupled using the shaft coupling portion 212d.

[0095] The first air supply fan 212 may further include a plurality of blades 212b, which are spaced apart along the periphery of the hub 212a. The plurality of blades 212b may be arranged in a circumferential direction. One end of the blades 212b may be engaged with the outer surface of the hub 212a.

[0096] The first air supply fan 212 may further include a rim 212c, which forms the intake-side front end of the first air supply fan 212. The rim 212c may be configured slightly spaced from the hub 212a towards the intake side.

[0097] The rim 212c may have an intake port 212e for drawing in air. The intake port 212e defines the inner space of the rim 212c.

[0098] As an example, the rim 212c can have a ring shape.

[0099] The other end of the blade 212b can be combined with the rim 212c.

[0100] The first air supply housing 213 may include a motor support portion 213a that supports the first air supply motor 211. A hub 212a may be mounted on the outer surface of the motor support portion 213a.

[0101] The motor support 213a can protrude rearward in a bowl shape to form a space to accommodate the first air supply motor 213a.

[0102] A through hole 213b through which the motor shaft of the first air supply motor 213a passes can be formed in the motor support portion 213a. The through hole 213b can be formed at the center of the motor support portion 213a.

[0103] The motor shaft of the first air supply motor 211 can pass through the motor support 213a and be connected to the hub 212a. The direction in which the motor shaft extends can be defined as the axial direction of the fan.

[0104] The second air supply module 220, located below the first air supply module 210, can blow air towards the side outlet 2111. The second air supply module 220 includes: a second air supply motor 221, providing rotational power; a second air supply fan 222, connected to the second air supply motor 221; and a second air supply housing 223, supporting the second air supply fan 222 so that it can rotate, and the second air supply housing 223 is disposed outside the second air supply fan 222 to guide the movement of air.

[0105] The second air supply module 220 has the same configuration as the first air supply module 210. Therefore, the description of the second air supply module 220 can refer to the content of the first air supply module 210 described above.

[0106] Another portion of the air passing through the heat exchanger 3100 moves toward the inside of the second air supply housing 223. Furthermore, the air expelled to the outside of the second air supply housing 223 by the operation of the second air supply fan 222 can flow toward the side outlet 2111 and be discharged to the outside.

[0107] The third air supply module 230, located below the second air supply module 220, can blow air towards the side outlet 2111. The third air supply module 230 includes: a third air supply motor 231, providing rotational power; a third air supply fan 232, connected to the third air supply motor 231; and a third air supply housing 233, supporting the third air supply fan 232 to enable rotation, and the third air supply housing 233 is disposed outside the third air supply fan 232 to guide the movement of air.

[0108] The third air supply module 230 has the same configuration as the first air supply module 210. Therefore, the description of the third air supply module 230 can refer to the content of the first air supply module 210 described above.

[0109] A portion of the air passing through the heat exchanger 3100 moves toward the inside of the third air supply housing 233. Furthermore, the air expelled to the outside of the third air supply housing 233 by the operation of the third air supply fan 232 can flow toward the side outlet 2111 and be expelled to the outside.

[0110] Here, the air supply fans 212, 222, and 232 can be centrifugal fans that allow air to flow in axially and be discharged radially through the side outlets 2111.

[0111] Centrifugal fans can have mechanical characteristics such as large air volume and high static pressure performance.

[0112] The air supply module section 2100 may only have a first air supply module 210 and a second air supply module 220, and may be modified in various ways as needed, for example, an air supply module may be further provided on the lower side of the third air supply module 230.

[0113] The air supply module 2100 of this utility model embodiment may have a partition wall 214, which includes a first partition wall 214a, a second partition wall 214b and a third partition wall 214c.

[0114] The first partition wall 214a can be formed to separate the first air supply module 210 and the second air supply module 220 between them. The first partition wall 214a can be arranged horizontally between the first air supply module 210 and the second air supply module 220.

[0115] The first partition wall 214a can be connected to the corresponding first partition wall 215a of the protective housing 2300, so that the flowing air can be trapped inside the first air supply module 210.

[0116] Therefore, the movement of air from the first air supply module 210 to the second air supply module 220 is blocked, and the movement of air from the second air supply module 220 to the first air supply module 210 is also blocked, so that the air supply actions of the first air supply module 210 and the second air supply module 220 can be performed independently.

[0117] The second partition wall 214b can be formed between the second air supply module 220 and the third air supply module 230 to separate the second air supply module 220 and the third air supply module 230. The second partition wall 214b can be arranged horizontally between the second air supply module 220 and the third air supply module 230.

[0118] The second partition wall 214b can be connected to the corresponding second partition wall 215b of the protective housing 2300, thereby trapping the flowing air within the second air supply module 220.

[0119] Therefore, the movement of air discharged from the second air supply module 220 to the third air supply module 230 is blocked, and the movement of air discharged from the third air supply module 230 to the second air supply module 220 is also blocked, so that the air supply actions of the second air supply module 220 and the third air supply module 230 can be performed independently.

[0120] The third partition wall 214c can be formed on the lower side of the third air supply module 230. The third partition wall 214c can be arranged in a horizontal direction.

[0121] The third partition wall 214c can be connected to the corresponding third partition wall 215c of the protective housing 2300, thereby trapping the flowing air within the third air supply module 230.

[0122] Therefore, by blocking the movement of air expelled from the third air supply module 230 to the lower side of the third air supply module 230, the air supply action of the third air supply module 230 can be performed independently.

[0123] The number of such partition wall sections 214 and corresponding partition wall sections 215 can be determined based on the number of air supply module sections 2100.

[0124] At least one of the partition wall portion 214 and the corresponding partition wall portion 215 may be provided with concave and convex portions 216, 217, 219 that can improve airflow performance.

[0125] The protrusions and depressions may include a first protrusion and depression 216 disposed on the partition wall portion 214. The first protrusion and depression 216 can reduce frictional resistance when the rotational flow generated during the rotation of the air supply fans 212, 222, and 232 collides with the partition wall portion 214.

[0126] The partition wall portion 214 includes a mounting surface that extends obliquely or arcuately along the outer peripheral surface of the air supply fan 212, 222, 232, and the first concave-convex portion 216 may be provided on the mounting surface.

[0127] The mounting surface can be formed to face the rim 212c of the air supply fans 212, 222, and 232.

[0128] The first uneven portion 216 may be configured with alternating protrusions and recesses. Alternatively, the first uneven portion 216 may include a plurality of grooves recessed on the surface.

[0129] If the air supply fans 212, 222, and 232 are driven, the air flows along the setting surface. When the air flows over the first concave-convex part 216, the frictional resistance between the air and the setting surface is reduced, thereby improving the flow performance.

[0130] The first concave-convex portion 216 can be respectively disposed on the first to third partition walls 214a, 214b, and 214c, corresponding to the first to third air supply modules 210, 220, and 230.

[0131] The protrusions and depressions may include a second protrusion and depression 217 disposed on the corresponding partition wall portion 215. The second protrusion and depression 217 can reduce frictional resistance when the rotational flow generated during the rotation of the air supply fans 212, 222, and 232 collides with the corresponding partition wall portion 215.

[0132] The corresponding partition wall 215 includes a mounting surface that extends obliquely or arcuately along the outer peripheral surface of the air supply fan 212, 222, 232, and the second concave-convex portion 217 can be provided on the mounting surface.

[0133] The mounting surface can be formed to face the rim 212c of the air supply fans 212, 222, and 232.

[0134] The second uneven portion 217 can be configured with alternating protrusions and recesses. Alternatively, the second uneven portion 217 may include a plurality of grooves recessed on the surface.

[0135] If the air supply fans 212, 222, and 232 are driven, the air flows along the setting surface. When the air flows over the second concave-convex portion 217, the frictional resistance with the setting surface is reduced, thereby improving the flow performance.

[0136] The second concave-convex portion 217 can be respectively disposed on the first to third corresponding partition walls 215a, 215b, and 215c, corresponding to the first to third air supply modules 210, 220, and 230.

[0137] If the air supply module 2100 is rotated to cover the protective housing 1200 and joined together, the partition wall 214 and the corresponding partition wall 215 can be connected to each other, and the first protrusion 216 and the second protrusion 217 can meet each other or be arranged very close to each other.

[0138] Therefore, the first uneven portion 216 and the second uneven portion 217 can have a shape that is continuously arranged in the front-back direction. With this configuration, the area of ​​the uneven portion is increased on the outer periphery of the air blowers 212, 222, and 232, thereby further reducing frictional resistance.

[0139] The protrusions and depressions may include third protrusions and depressions 219 provided on the air supply housings 213, 223, and 233. The third protrusions and depressions 219 provided on the first to third air supply housings 213, 223, and 233 have the same structure, and are therefore collectively referred to as air supply housings for description.

[0140] The air supply housing 213, 223, 233 may include: a first part forming a back surface and having a flat surface; and a second part protruding rearward from the first part and having a motor support 213a.

[0141] The first part can surround the perimeter of the second part.

[0142] The third concave-convex portion 219 can be provided in the first portion.

[0143] The third concave-convex portion 219 can be formed in an arc shape with a curvature corresponding to the rotation direction of the air supply fans 212, 222, and 232.

[0144] The third concave-convex portion 219 can be formed in an arc shape with a curvature corresponding to the path of airflow generated by the blower fans 212, 222, 232.

[0145] The third protrusion 219 may include ribs protruding from the flat surface of the first portion. A plurality of ribs may be provided, and the plurality of ribs may be spaced apart from each other.

[0146] The angles at which the plurality of ribs extend can be different from each other. As an example, the angles formed by the plurality of ribs relative to the extension lines passing through the centers of the air supply fans 212, 222, and 232 in the vertical direction can be different from each other.

[0147] With this configuration, when the air supply fans 212, 222, and 232 rotate to generate airflow, the airflow can be easily guided towards the discharge side of the air supply fans 212, 222, and 232. Here, the discharge side can be understood as the two sides of the air supply fans 212, 222, and 232, that is, the direction in which the side discharge port 2111 is formed.

[0148] A protective housing 2300 may be provided in front of the heat exchanger 3100 of the heat exchange assembly 3000 to guide the air passing through the heat exchanger 3100 to the air supply module 2100.

[0149] The protective housing 2300 is disposed between the outlet side of the heat exchanger 3100 and the inlet side of the air supply module 2100.

[0150] The protective housing 2300 of this utility model embodiment can function to draw in air that has passed through the heat exchanger 3100 along the axial direction of the fan.

[0151] Since the outlet side of the heat exchanger 3100 and the inlet side of the air supply module 2100 are connected by the protective housing 2300, the air passing through the heat exchanger 3100 can move stably toward the air supply module 2100.

[0152] At this time, since the air passing through the heat exchanger 3100 moves along the curved protective housing 2300, the flow separation of the air moving from the heat exchanger 3100 to the inlet side of the air supply module 2100 can be reduced.

[0153] Furthermore, since a protective housing 2300 is provided between the outlet side of the heat exchanger 3100 and the inlet side of the air supply module 2100, pressure loss of the blowing airflow can be prevented. In addition, by reducing the eddies generated inside the upper housings 1100 and 1200 due to the flow separation of the blowing airflow, flow noise can be reduced.

[0154] Therefore, the protective housing 2300 may include: a housing body 2310; and a suction guide 2320 disposed on the housing body 2310, forming a suction opening 2321. As an example, the housing body 2310 may have a quadrilateral panel shape, and the suction opening 2321 may have a circular shape.

[0155] The intake guide 2320 provides intake-side passages for the air supply fans 212, 222, and 232, and therefore can be referred to as an "orifice".

[0156] The width of the housing body 2310 is slightly larger than the width of the heat exchanger 3100 so that it can completely cover the heat exchanger 3100, allowing the air passing through the heat exchanger 3100 to flow smoothly into the air supply module 2100.

[0157] The protective housing 2300 is disposed between the heat exchanger 3100 and the air supply module 2100, forming a guide flow path that guides the air passing through the heat exchanger 3100 to the inlet side of the air supply module 2100.

[0158] The housing body 2310 may include a plate portion 2330 forming the periphery of the suction guide portion 2320. The plate portion 2330 may have a flat plate shape connecting the corner of the suction guide portion 2320 and the housing body 2310.

[0159] The plate 2330 is connected to the suction guide 2320 and is arranged facing the air supply module 2100.

[0160] The intake guide unit 2320 can guide the air that has passed through the heat exchanger 3100 to the air supply module unit 2100.

[0161] Multiple intake guides 2320 may be formed corresponding to the air supply module 2100, and for example, they may be arranged in a vertical direction. Each intake guide 2320 may be connected to the rear side of the first, second, and third air supply housings 213, 223, and 233, so that the air passing through the intake guide 2320 can be transmitted to the inside of the air supply fan assembly 2000 without leakage.

[0162] The inhalation guide 2320 may include a first inhalation guide 2321, a second inhalation guide 2322, and a third inhalation guide 2323. The first inhalation guide 2321 may be fluidly connected to the first air supply module 210, the second inhalation guide 2322 may be fluidly connected to the second air supply module 220, and the third inhalation guide 2323 may be fluidly connected to the third air supply module 230.

[0163] The first to the third inhalation guides 2321, 2322, and 2323 can form a circular outlet, but various modifications can be implemented.

[0164] The first inhalation guide 2321, the second inhalation guide 2322, and the third inhalation guide 2323 may each include an edge portion 2325 forming an inner peripheral surface.

[0165] The edge portion 2325 can be provided in multiples corresponding to the number of fans, and the multiple edge portions 2325 can be provided in correspondence with the first to third air supply modules 210, 220, and 230, respectively.

[0166] Edge portions 2325 respectively define the peripheries of the first to third intake guide portions 2321, 2322, and 2323, and can form flared openings to guide air drawn into the first to third air supply modules 210, 220, and 230. The flared openings may include the inflow-side end of the edge portion 2325 closest to the heat exchanger 3100.

[0167] The edge portion 2325 may include a curved surface with a recessed groove shape. The curved surface is configured adjacent to the first air supply module 210 having a rearwardly projecting front end, which can prevent air leakage to the outside of the housing 2300.

[0168] The plate portion 2330 includes a corresponding partition wall portion 215 that faces and is in contact with the partition wall portion 214 of the air supply module portion 2100. The corresponding partition wall portion 215 includes a first corresponding partition wall 215a, a second corresponding partition wall 215b, and a third corresponding partition wall 215c.

[0169] The first corresponding partition wall 215a can be formed to separate the first suction guide portion and the second suction guide portion. The first corresponding partition wall 215a is arranged horizontally in relation to the first partition wall 214a, protruding forward from the boundary between the first suction guide portion and the second suction guide portion and connecting with the first partition wall 214a.

[0170] Therefore, by blocking the movement of air expelled from the first intake guide to the second intake guide and blocking the movement of air expelled from the second intake guide to the first intake guide, the air supply operations of the first and second intake guides can be performed independently.

[0171] The second corresponding partition wall 215b can be formed to separate the second suction guide portion and the third suction guide portion. The second corresponding partition wall 215b is arranged horizontally in relation to the second partition wall 214b, protruding forward from the boundary between the second suction guide portion and the third suction guide portion and connecting with the second partition wall 214b.

[0172] Therefore, by blocking the movement of air expelled through the second intake guide to the third intake guide, and by blocking the movement of air expelled from the third intake guide to the third intake guide, the air supply operations of the second and third intake guides can be performed independently.

[0173] Furthermore, the third corresponding partition wall 215c can be formed on the lower side of the third suction guide portion. The third corresponding partition wall 215c is arranged horizontally in relation to the third partition wall 214c, protruding forward from the lower side of the third suction guide portion and connecting with the third partition wall 214c.

[0174] Therefore, by blocking the movement of air expelled from the third intake guide section to the lower side of the third intake guide section, the air supply operation of the third intake guide section can be carried out independently.

[0175] The air supply module 2100 and the protective housing 2300 can form a "fan housing" that internally accommodates the air supply fans 212, 222, and 232. The fan housing can form an internal space that accommodates the air supply fans 212, 222, and 232.

[0176] The fan housing can be configured such that the internal space is open, allowing the user easy access to the air supply fan 212, 222, 232.

[0177] From another perspective, at least a portion of the fan housing can be separated from the other portion to open up the internal space of the fan housing.

[0178] As an example, the air supply module 2100 can be opened and closed in the front-to-back direction by rotating relative to the protective housing 2300 via the hinge 2430.

[0179] The main body front shell 1100 and the air supply module 2100 constitute part of the upper shell 1100, and can be a rotating part that can be opened and closed by rotating around the axis of the hinge 2430.

[0180] Furthermore, the protective housing 2300, the heat exchange assembly 3000, and the filter assembly 4000 constitute part of the upper housing 1100 and may be a fixed part formed corresponding to the rotating part.

[0181] When the main body front shell 1100 and the air supply module 2100 are opened from the protective shell 2300 at a predetermined angle, the air supply shells 213, 223, and 233 of the air supply module 2100 and the air supply fans 212, 222, and 232 can be opened to the outside, and the front of the protective shell 2300 facing the air supply module 2100 can also be opened to the outside. Therefore, the user can thoroughly clean the dust and other foreign objects trapped in the separated air supply module 2100 and protective shell 2300.

[0182] With the air supply module 2100 closed within the protective housing 2300, i.e., forming the fan housing, it is necessary to seal the internal space of the fan housing to prevent air leakage.

[0183] In detail, the partition wall portion 214 of the air supply module portion 2100 may include a contact surface 283, which contacts the corresponding partition wall portion 215 of the protective housing 2300 when the air supply module portion 2100 is closed in the protective housing 2300.

[0184] The contact surface 283 can be formed on the back side of the partition wall portion 214.

[0185] The partition wall portion 214 may include a first protruding rib 281 and a second protruding rib 282. The first and second protruding ribs 281 and 282 may protrude rearward from both ends of the partition wall portion 214. As an example, the first protruding rib 281 may be provided at the lower end of the partition wall portion 214, and the second protruding rib 282 may be provided at the upper end of the partition wall portion 214.

[0186] The contact surface 283 can be formed between the first and second protruding ribs 281 and 282.

[0187] First and second protruding ribs 281 and 282 and contact surface 283 can be formed in the first partition wall 214a to the third partition wall 214c.

[0188] A first guide wall 250 may be provided on the upper side of the first air supply module 210. The first guide wall 250 may protrude rearward from the air supply housing 213 and connect with the upper part of the protective housing 2300. A groove may be formed in the first guide wall 250 for the upper hinge 2431 to engage.

[0189] The first guide wall 250 has a similar configuration to the first to third partition walls 214a, 214b, and 214c, and can be understood as a configuration of the partition wall portion 214. For ease of explanation, the first guide wall 250 can be referred to as the "fourth partition wall".

[0190] A first protruding rib 281 may be provided at the lower end of the first guide wall 250.

[0191] At least one of the first partition wall 214a to the third partition wall 214c and the first guide wall 250 may be provided with an air handling device 260 for handling air passing through the air supply module.

[0192] As an example, an air handling device 260 may be provided on the first partition wall 214a, the second partition wall 214b and the second guide wall 250.

[0193] The air handling unit 260 may include a sterilization device for sterilizing the air. As an example, the sterilization device may include an ultraviolet lamp that emits ultraviolet light or an ion generating device.

[0194] As another example, a sensor device 260 for detecting the temperature or humidity of the air can be installed on either of the first or second partition walls located on both sides of the air supply fans 212, 222, and 232.

[0195] The housing 2300 may have a mounting slot 265 for accommodating the air handling unit 260. The mounting slot 265 may be positioned so that the air handling unit 260 can be inserted when the air supply module 2100 is closed in the housing 2300.

[0196] The protective housing 2300 may include a protrusion 285 disposed in contact with the contact surface 283 of the air supply module 2100.

[0197] The protrusion 285 is provided on the first corresponding partition wall 215a to the third corresponding partition wall 215c and the second guide wall 255. Specifically, it can protrude forward from the front of the first corresponding partition wall 215a to the third corresponding partition wall 215c and the second guide wall 255.

[0198] The second guide wall 255 serves as the upper side wall of the protective housing 2300 and can be connected to the first guide wall 250.

[0199] When the air supply module 2100 is closed in the protective housing 2300, the protrusion 285 can be arranged to contact the contact surface 283 between the first and second protruding ribs 281 and 282. With such a combination structure (contact structure), the sealing effect of the air supply module 2100 and the protective housing 2300 constituting the fan cover can be improved.

[0200] On the other hand, discharge portions 2110 are provided on both sides of the air supply module 2100, and side discharge ports 2111 are formed in the discharge portions 2110.

[0201] The discharge portion 2110 can be configured on the side of the air supply fan assembly 2000. Side discharge ports 2111 can be formed on both sides of the discharge portion 2110 to discharge the air flowing through the air supply module 2100 to the outside.

[0202] The air supply module 2100 may include an air supply module cover 2101 that forms the overall appearance of the air supply module 2100. The air supply module cover 2101 may be formed into a hollow frame shape. A plurality of components constituting the air supply module 2100 may be installed inside the air supply module cover 2101. As an example, the air supply module cover 2101 may be formed into a quadrilateral frame shape with a longer length in the vertical direction.

[0203] The air supply module cover 2101 may include: a pair of discharge portions 2110, which are respectively erected on both sides of the air supply module cover 2101; and a connecting portion 2120, which connects the pair of discharge portions 2110.

[0204] A pair of discharge portions 2110 can form the two sides of the air supply module cover 2101. Side door assemblies 2130 can be respectively attached to each pair of discharge portions 2110. Each pair of discharge portions 2110 can be formed into a quadrilateral panel shape with a relatively long vertical length. The pair of discharge portions 2110 can be arranged at an angle towards the front. As an example, to improve airflow performance, the pair of discharge portions 2110 can be arranged at an angle towards each other in a forward direction.

[0205] The discharge portion 2110 may have a side discharge port 2111 from which air drawn in from the blower fans 212, 222, and 232 is discharged to the outside. The side discharge port 2111 may be formed by cutting open at least a portion of the discharge portion 2110 in the vertical direction.

[0206] The discharge section 2110 may have a discharge grille 2112 for forming an airflow of discharged air. The discharge grille 2112 may be formed by a plurality of ribs arranged in a grid pattern on the inside of the side discharge port 2111.

[0207] The exhaust grille 2112 may include a plurality of vertical and horizontal ribs separating the side exhaust outlets 2111. The plurality of vertical ribs may be arranged obliquely towards the front and outward. As an example, in order to improve aerodynamic performance, the plurality of vertical ribs may be arranged obliquely towards the side exhaust outlets 2111.

[0208] A first groove 2113 can be formed in the ejection portion 2110, which is a side door drive part that imparts driving force to the side door assembly 2130. Figure 9 The side door drive unit 2122 is disposed in the first groove 2113. The side door drive unit 2122 may be disposed inside the first groove 2113. The side door drive unit 2122 is connected to the side door assembly 2130 through the first groove 2113 and can provide driving force for the side door assembly 2130 to move in the front-back direction.

[0209] The first groove 2113 can be formed in multiples. The multiple first grooves 2113 can be formed at the upper and lower ends of the discharge portion 2110, respectively.

[0210] A second groove 2114 can be formed in the ejection portion 2110 to guide the door support member of the side door assembly 2130 to move in the front-back direction. Figure 9 The door support member 2123 is disposed in the second groove 2114. The door support member 2123 may be disposed inside the second groove 2114. The door support member 2123 is connected to the side door assembly 2130 through the second groove 2114, and serves to guide the front and rear movement of the side door assembly 2130 and support the side door assembly 2130.

[0211] Multiple second slots 2114 can be formed to support the load of the side door assembly 2130. The multiple second slots 2114 can be spaced apart along the length of the ejection portion 2110.

[0212] The connecting portion 2120 connects a pair of discharge portions 2110 and can form the back of the air supply module cover 2101. The connecting portion 2120 can be formed into a quadrilateral panel shape with a relatively long vertical length. The connecting portion 2120 can be formed into a shape in which at least a portion protrudes rearward.

[0213] Based on the connecting portion 2120, a blower motor can be arranged in front of the connecting portion 2120, and blower fans 212, 222, and 232 can be arranged behind the connecting portion 2120. Therefore, a discharge flow path 2120a can be formed in the space between the pair of discharge portions 2110 and the connecting portion 2120, and the discharge flow path 2120a guides the air flowing into the intake opening 2321 to the side discharge outlet 2111.

[0214] The connecting portion 2120 may include air supply housings 213, 223, and 233, which form a motor support portion 213a supporting the air supply motor. A plurality of air supply housings 213, 223, and 233 may be formed and spaced apart along the vertical direction.

[0215] The connecting portion 2120 may include blade support ribs 2126 supporting the side blade module 2200. The blade support ribs 2126 are formed extending forward from the front of the connecting portion 2120. The blade support ribs 2126 may extend elongated in the vertical direction. The blade support ribs 2126 may be formed as a pair and respectively disposed on both sides of the air supply housings 213, 223, and 233. A portion of the blade support ribs 2126 may be inserted into the inner side of the side blade module 2220.

[0216] The air supply module housing 2101 may include a top panel 2140 disposed on the upper side of a pair of discharge portions 2110.

[0217] The top panel 2140 can form the top surface appearance of the air supply fan assembly 2000. The top panel 2140 can be detachably attached to the upper side of the air supply module 2100. The top panel 2140 can be configured to cover the open top surface of the air supply module 2100. As an example, the top panel 2140 can be formed into a quadrilateral panel shape.

[0218] Considering that the top panel 2140 forms the top appearance of the indoor unit, the top panel 2140 can be understood as a component of the housing assembly 1000.

[0219] Considering that the side door assembly 2130, described later, forms the side appearance of the indoor unit, the side door assembly 2130 can be understood as a component of the housing assembly 1000.

[0220] As described above, the housing assembly 1000 can be understood as including a plurality of separate components that form the appearance of the indoor unit, namely, the main front housing 1100, the main rear housing 1200, the lower housing 5000, the top panel 2140, and the side door assembly 2130. It should be noted that any two or more of the plurality of components may be integrally formed, or any one of the plurality of components may be omitted.

[0221] Side door assemblies 2130 with opening and closing side discharge ports 2111 are provided on the discharge portions 2110 located on both sides of the air supply fan assembly 2000. The side door assemblies 2130 may be additionally formed on the discharge portions 2110.

[0222] The side door assembly 2130 can be formed to extend from the upper end of the upper housing 1100, 1200 of the housing assembly 1000 to the boundary of the lower housing 5000 with a specified width.

[0223] The side door assembly 2130 serves to open and close the side outlets 2111 of the discharge portion 2110 formed on both sides of the air supply fan assembly 2000.

[0224] The side door assembly 2130 opens the side outlet 2111 when the indoor unit is running, and closes the side outlet 2111 when the indoor unit is not running.

[0225] When the indoor unit is running, the side door assembly 2130 opens the side outlet 2111, expelling the air blown by the air supply module 2100 to the outside.

[0226] Conversely, when the indoor unit is not running, the side door assembly 2130 closes the side outlet 2111, thereby effectively preventing dust and other particles from flowing in through the side outlet 2111 and becoming stuck inside, or effectively preventing foreign objects that may cause malfunctions from flowing in.

[0227] As another example of operation, when the indoor unit is running, either of the two side door assemblies 2130 can open one side outlet 2111 to discharge air to the outside, while the other side door assembly 2130 can close the other side outlet 2111 to prevent air from being discharged (single-sided air outlet mode).

[0228] As an example, either the side outlet 2111 on one side or the side outlet 2111 on the other side can be the left side outlet, while the other can be the right side outlet.

[0229] Such a side door assembly 2130 includes: left and right side doors 2121, which can be moved in the front-back direction to open and close side outlets 2111; and a support frame 2124, which has guide holes 2125 to guide the front-back movement of the side doors 2121.

[0230] The side door assembly may include: a side door drive unit 2122 that provides driving force to the side door 2121; and a door support member 2123 that supports each side door 2121 on the ejection portion 2110. Here, the side door drive unit 2122 and the door support member 2123 attached to the side door 2121 and the support frame 2124 may be referred to as the side door module 2120.

[0231] The side door assembly 2130 is supported so that it can move from the foremost position of the covered side outlet 2111 to the rearmost position of the open side outlet 2111.

[0232] Referring to the accompanying drawings, the side door assembly 2130 can extend from the upper end of the upper housings 1100 and 1200 of the housing assembly 1000 to the boundary of the lower housing 5000 with a specified width to cover the entire unit. The outer surface of the side door 2121 can have a shape that can form the same texture as the main front housing 1100 and the base front 5300, so as to provide the user with the aesthetics of the indoor unit and provide a sense of unity between the air supply fan assembly 2000 and the main rear housing 1200.

[0233] Figure 9 This is a cross-sectional perspective view of the side door module according to an embodiment of the present utility model.

[0234] Reference Figure 9 The side door drive unit 2122 may include: a rack 2122a disposed on the inner surface of the support frame 2124; a pinion 2122b meshing with the rack 2122a; and a drive motor 2122c providing driving force to the pinion 2122b so that the support frame 2124 can move left and right.

[0235] The rotational force of the pinion 2122b, which is connected to the output shaft of the drive motor 2122c provided in the side door drive unit 2122, can be converted into linear reciprocating motion of the support frame 2124, which is formed with rack 2122a.

[0236] The drive motor 2122c and the pinion 2122b are disposed in the ejection portion 2110, and the rack 2122a that can be geared with the pinion 2122b can be formed on the inner surface of the support frame 2124 of the side door assembly 2130.

[0237] Here, the discharge portion 2110, which is equipped with the drive motor 2122c and the pinion 2122b, is not the portion that forms the side discharge port 2111, but can be the portion corresponding to the panel portion 2112 in the shape of a plate located on one side of the side discharge port 2111.

[0238] One end of the door support member 2123 can be fixed to the ejection portion 2110, while the other end can be supported within the support frame 2124 of the side door assembly 2130, so that the side door assembly 2130 can be supported by the ejection portion 2110 of the air supply fan assembly 2000 to achieve stable opening and closing action.

[0239] As previously described, the side door assembly 2130 can be formed to extend from the upper end of the upper housing 1100, 1200 of the housing assembly 1000 to the boundary of the lower housing 5000 with a specified width.

[0240] The side door 2121 and the support frame 2124 of the side door assembly 2130 are plate-shaped components that are formed elongated along the length direction and are joined together. The side door assembly 2130 is configured as a component in which the side door 2121 and the support frame 2124 are joined together.

[0241] Figure 10 This is a perspective view showing the side blade module of an embodiment of the present invention.

[0242] Reference Figure 10 The side door assembly 2130 is tilted forward to guide the air expelled from the housing assembly 1000 forward. Therefore, the air discharged through the side outlet 2111 is redirected by the side blade module 2200, forming a forward-directing airflow. Here, the forward-directing airflow can be defined as the expelled airflow with an effective discharge angle relative to the front.

[0243] The side blade module 2200 is a blade that converts the direction of the forward-facing airflow exiting through the side outlet 2111, and is disposed in front of the air supply fan assembly 2000. Furthermore, the side blade module 2200 may include a side blade housing 2210 and side blades 2220. In the side blade module 2200, the conversion of the forward-facing airflow direction is achieved by the plate-shaped side blades 2220 disposed adjacent to the front side of the side outlet 2111.

[0244] The side blades 2220 of the side blade module 2200 are hidden between the main front housing 1100 and the air supply fan assembly 2000, and can be referred to as hidden blades.

[0245] Therefore, the side blades 2220 do not affect the airflow of the air discharged through the side outlet 2111, and the discharged air can maintain a forward-facing airflow.

[0246] However, when the blade drive unit 2215 is operated to switch from direct wind mode to indirect wind mode, the side blades 2220 can move horizontally from the hidden state toward the direction of external exposure.

[0247] When the side blade 2220 begins to move horizontally, it stops after moving to the final deployed position.

[0248] If the side blades 2220 move to their final deployed position, the air expelled through the side outlet 2111 is resisted by the side blades 2220. In particular, the air at the front end of the side outlet 2111 directly collides with the side blades 2220 and changes its direction of movement. At this time, the air at the front end of the air expelled through the side outlet 2111 has the fastest flow velocity. Therefore, the air that collides with the side blades 2220 and changes its direction of movement will affect the direction of movement of the air expelled from the rear side. As a result, the overall direction of movement of the air through the side outlet 2111 changes, forming a lateral airflow.

[0249] The side blades 2220 of the side blade module 2200 move relative to the side blade housing 2210 in the left-right direction via the blade drive unit 2215. The side blades 2220 may include a left side blade 2220 and a right side blade 2220.

[0250] The blade drive unit 2215 includes: a drive motor 2211 capable of electrically driving the side blades 2220; a pinion 2212 connected to the output shaft of the drive motor 2211; and a rack 2214 that converts the rotational force of the pinion 2212 into linear reciprocating motion.

[0251] Here, the drive motor 2211 and the pinion 2212 can be disposed in the side blade housing 2210, and the rack 2214 that can engage with the pinion 2212 can be disposed on the inner surface of the side blade 2220.

[0252] The drive motor 2211 can be firmly supported at any position on the side blade housing 2210 by an additional bracket 2213. The rack 2214 that meshes with the pinion 2212 can be integrally formed with the side blade 2220, or it can be formed separately and on the side blade 2220.

[0253] According to the embodiments of the present invention, in order to clean the air supply fans 212, 222, and 232, it can be configured to open and close the main front housing 1100 of the housing assembly 1000 and the air supply module 2100 of the air supply fan assembly 2000.

[0254] Figure 11 and Figure 12 This is a perspective view showing the hinge portion of an embodiment of the present invention.

[0255] Reference Figure 11 and Figure 12 The air supply module 2100 can be opened and closed in the front and rear directions by rotating relative to the protective housing 2300 via the hinge 2430.

[0256] The hinge portion 2430 includes an upper hinge 2431 and a lower hinge 2432. Here, the upper hinge 2431 is located on the upper side of the air supply fan assembly 2000 and the protective housing 2300, and the lower hinge 2432 is located on the lower side of the air supply fan assembly 2000 and the protective housing 2300.

[0257] The main body front shell 1100 and the air supply module 2100 are rotatably connected to the protective shell 2300 via the upper hinge 2431 and the lower hinge 2432.

[0258] An upper and lower hinge bracket 2440 is provided on one side of the protective housing 2300. One side of the upper and lower hinges 2431 and 2432 is fixed to the upper and lower hinge bracket 2440 by a hinge shaft 2433. At this time, bracket mounting grooves 2450 can be formed on the upper end side and the lower end side to prevent the upper and lower hinge brackets 2440 from protruding outward from the protective housing 2300.

[0259] A space is formed inside the upper and lower hinge brackets 2440 so that the upper and lower hinges 2431 and 2432 can rotate through the hinge axis 2433.

[0260] The front of the space of the upper and lower hinge brackets 2440 and the hinge insertion surface are open, and are set at the same height in the bracket setting slot 2450 of the protective housing 2300, so that the upper and lower hinges 2431 and 2432 can rotate in the space.

[0261] Each of the upper and lower hinges 2431 and 2432 can be bent to extend at approximately 90° at each end.

[0262] A shaft insertion hole 2434 is formed on one side of the upper and lower hinges 2431 and 2432, and the hinge shaft 2433 is rotatably inserted into the shaft insertion hole 2434. A connecting member 2435 is formed on the other side of the upper and lower hinges 2431 and 2432, and the connecting member 2435 is fixed to the back of the first air supply housing 213 and the third air supply housing 233 of the air supply fan assembly 2000.

[0263] The upper and lower hinges 2431 and 2432 can be configured such that, when rotating about the hinge axis 2433, a portion of the upper and lower hinges 2431 and 2432 is led out from the space of the upper and lower hinge bracket 2440 and exposed or contained in the space.

[0264] The main body front shell 1100 and the air supply module 2100 can rotate from the protective shell 2300 via the hinge 2430.

[0265] As shown in the figure, the air supply module 2100 is opened by opening and closing around the hinge 2430 connecting the air supply fan assembly 2000 and the protective housing 2300.

[0266] When the air supply module 2100 opens from the protective housing 2300 at a predetermined angle, the air supply fans 212, 222, and 232 of the air supply module 2100 can open to the outside, and at the same time, the front of the protective housing 2300 facing the air supply module 2100 can open to the outside.

[0267] Therefore, users can thoroughly clean the dust and other foreign objects trapped in the separated air supply module 2100 and the protective housing 2300.

[0268] Figure 13 and Figure 14 This is a perspective view showing the hinge portion and roller bracket of an embodiment of the present invention. Figure 15 This is a bottom perspective view showing a roller bracket according to an embodiment of the present invention.

[0269] Reference Figures 13 to 15 A roller bracket 3120 is provided on the side where the lower hinge 2432 of the air supply fan assembly 2000 is located. The roller bracket 3120 is integrally combined with the air supply fan assembly 2000. When rotating towards the protective housing 2300 or away from the protective housing 2300, the roller bracket 3120 rolls along the top surface of the horizontal base 3110 between the upper housing 1100, 1200 and the lower housing 5000.

[0270] The roller bracket 3120 is configured to prevent the hinge portion 2430 from sagging due to the load of the air supply fan assembly 2000 when the air supply fan assembly 2000 is opened forward, and to reduce the load burden applied to the hinge portion 2430. It is also configured to clean dust and other foreign objects collected on the air supply fan assembly 2000 and the protective housing 2300 while the air supply fan assembly 2000 is stably opened.

[0271] The roller bracket 3120 includes a bracket body 3121, which is located directly below the lower hinge 2432, that is, protruding from the lower end of the third air supply housing 233 towards the protective housing 2300 on the side of the lower hinge 2432.

[0272] The bracket body 3121 of this utility model embodiment is in the shape of a hollow cover and includes: a first vertical plate 3121a, which is vertically arranged to be installed on the inlet side of the third air supply housing 233 and is in contact with the third air supply housing 233; a horizontal plate 3121b, which is bent at a right angle at the upper end of the first vertical plate 3121a and extends horizontally; and a second vertical plate 3121c, which is formed at a predetermined interval from the inlet side of the third air supply housing 233 and is connected between the first vertical plates 3121a.

[0273] In addition, the bottom part of the bracket body 3121 and the lower end of the base part 2001 of the third air supply housing 233 located on the lower side of the air supply fan assembly 2000 are on the same line.

[0274] On the other hand, the protective housing 2300 is provided with a cutout formed on the rotation trajectory of the roller bracket 3120 to prevent the roller bracket 3120 from interfering with the protective housing 2300 when the air supply fan assembly 2000 rotates through the hinge portion 2430.

[0275] At this point, it is necessary to ensure that the side portion of the bracket body 3121 does not interfere with the side portion of the cut portion, so that the roller bracket 3120 can smoothly roll along the rotation path relative to the cut portion located on the rotation path of the roller bracket 3120. For this purpose, the corner where the first vertical plate 3121a and the second vertical plate 3121c of the bracket body 3121 intersect can be bent into an arc shape.

[0276] At least one rotating roller 3122 is provided on the bracket body 3121, and the rotating roller 3122 contacts and rolls with the bottom surface of the bracket body 3121.

[0277] like Figure 15 As shown, a rotating roller 3122 is rotatably disposed in the hollow space of the bottom surface of the bracket body 3121. The rotating roller 3122 is configured to roll along a travel direction corresponding to the trajectory of rotation of the bracket body 3121 via the hinge portion 2430. Here, the bracket body 3121 travels from the air supply fan assembly 2000 toward the protective housing 2300 in an arc-shaped rotation trajectory. The rotation trajectory of the bracket body 3121 is the same as the rotation trajectory of the hinge portion 2430.

[0278] The bracket body 3121 includes roller support portions 3123 for supporting the rotating roller 3122. Roller support portions 3123 are provided on both sides of the roller support portions 3123, perpendicular to the traveling direction of the rotating roller 3122, to support the two ends of the rotating roller 3122. The rotating roller 3122 can be axially supported by the two roller support portions 3123.

[0279] The roller support 3123 includes: a roller insertion groove 3123a for inserting a rotating roller 3122; and a shaft support groove 3123b in which the rotating shaft 3122a of the rotating roller 3122 is inserted and supported.

[0280] Preferably, the width of the inlet side of the shaft support groove 3123b for inserting the rotating shaft 3122a is smaller than the diameter of the rotating shaft 3122a. That is, the rotating shaft 3122a should be inserted into the shaft support groove 3123b and rotate smoothly without falling out. However, if the width of the inlet side of the shaft support groove 3123b is larger than the diameter of the rotating shaft 3122a, the rotating shaft 3122a may easily fall out of the shaft support groove 3123b. Therefore, to prevent this from happening, the width of the inlet side of the shaft support groove 3123b must be smaller than the diameter of the rotating shaft 3122a.

[0281] Preferably, the rolling surface of the rotating roller 3122 is positioned lower than the bottom surface of the bracket body 3121, so that the rotating roller 3122 can roll along the top surface of the horizontal base 3110 at the lower end of the protective housing 2300.

[0282] As described above, the rotating roller 3122 mounted on the roller bracket 3120 rolls along the horizontal base 3110 and distributes the load of the air supply fan assembly 2000 to the horizontal base 3110, so that the horizontal base 3110 can stably support the air supply fan assembly 2000.

[0283] Figure 16 This is a perspective view illustrating the limiting means for restricting the rotational movement of the roller bracket according to an embodiment of the present invention. Figure 17 This is a diagram showing the locking part of the limiting rotating roller according to an embodiment of the present invention.

[0284] Reference Figure 16 and Figure 17 The rotation trajectory of the rotating roller 3122 mounted on the roller bracket 3120 can be restricted.

[0285] A locking portion 3124 is formed at the maximum open position of the air supply fan assembly 2000 in the rotation trajectory of the rotating roller 3122 on the top surface of the horizontal base 3110, the locking portion 3124 restricting the rotating roller 3122 to prevent further rolling.

[0286] The locking part 3124 is formed by protruding upward from the top surface of the horizontal base 3110 to a predetermined height so that the rotating roller 3122 can be kept in a fixed state.

[0287] A pair of locking portions 3124 are formed to restrict the rotation of the rollers 3122 when the opening and closing angles of the air supply fan assembly 2000 are 60° and 90° respectively.

[0288] The locking part 3124 includes: a first locking part 3124a, which restricts the rotating roller 3122 when the air supply fan assembly 2000 reaches the maximum open position (opening and closing angle is 90°) to prevent the rotating roller 3122 from rolling further and to prevent the indoor unit from tipping over; and a second locking part 3124b, which is located on the rotation trajectory of the rotating roller 3122 to restrict the rotating roller 3122 to prevent the rotating roller 3122 restricted by the first locking part 3124a from returning to the state before restriction.

[0289] Additionally, the locking portion 3124 includes: a third locking portion 3124c, which restricts the rotating roller 3122 to prevent it from rolling further when the air supply fan assembly 2000 reaches the appropriate open position (opening / closing angle of 60°); and a fourth locking portion 3124d, which is located on the rotation trajectory of the rotating roller 3122 to restrict the rotating roller 3122 to prevent the rotating roller 3122 restricted by the third locking portion 3124c from returning to its state before restriction.

[0290] In this case, preferably, the height of the first locking portion 3124a and the third locking portion 3124c of the locking portion 3124 can be higher than the height of the second locking portion 3124b and the fourth locking portion 3124d.

[0291] Preferably, the second locking portion 3124b and the fourth locking portion 3124d can be located on the rotation trajectory of the rotating roller 3122, and are at a height that the rotating roller 3122 can fully pass over. However, the first locking portion 3124a and the third locking portion 3124c are at a height that the rotating roller 3122 cannot further pass over. Preferably, the height of the locking portion 3124 is about 4 to 7 mm.

[0292] Furthermore, since the rotating roller 3122 needs to remain fixed between the first locking portion 3124a and the second locking portion 3124b, and between the third locking portion 3124c and the fourth locking portion 3124d, the width of the locking portion 3124—that is, the width between the first locking portion 3124a and the second locking portion 3124b, and between the third locking portion 3124c and the fourth locking portion 3124d—can be slightly less than or equal to the diameter of the rotating roller 3122. More preferably, the width of the locking portion 3124 can be such that the rotating roller 3122 remains fixed and does not move when in contact with the horizontal base 3110 between the first locking portion 3124a and the second locking portion 3124b, and between the third locking portion 3124c and the fourth locking portion 3124d.

[0293] like Figure 16 As shown, a line 3127 is connected between the air supply fan assembly 2000 and the protective housing 2300 to maintain the opening and closing angle of the air supply fan assembly 2000 at 60°, so as to avoid the danger of the indoor unit tipping over if the opening and closing angle of the air supply fan assembly 2000 exceeds 60° as the appropriate opening and closing angle.

[0294] Line 3127 is not connected to a specific location between the air supply fan assembly 2000 and the protective housing 2300. However, preferably, line 3127 is not located in a position where it would be hooked by other structures and prevent the air supply fan assembly 2000 from opening and closing properly.

[0295] Therefore, wire fixing parts 3125 and 3126 can be provided at the lower ends of the air supply fan assembly 2000 and the protective housing 2300, respectively.

[0296] The wire fixing part 3125 of the blower fan assembly 2000 and the wire fixing part 3126 of the protective housing 2300 may include a fixing member (not shown) capable of hooking or bundling the wire 3127 for fixing.

[0297] On the other hand, when the opening and closing angle of the air supply fan assembly 2000 is a maximum of 60°, the wire 3127 can be subjected to maximum tensile force and remain taut. That is, preferably, when the wire 3127 is stretched, its length elongates, limiting the opening and closing angle of the air supply fan assembly 2000 to a maximum of 60°.

[0298] To change the opening and closing angle of the blower fan assembly 2000 to 90°, the rotating roller 3122 located between the third locking part 3124c and the fourth locking part 3124d can be adjusted to a position between the first locking part 3124a and the second locking part 3124b. At this time, the wire 3127 can be loosened from either the wire fixing part 3125 of the blower fan assembly 2000 or the wire fixing part 3126 of the protective housing 2300 to adjust the angle to 90°, and maintain tension while applying maximum tensile force.

[0299] As shown in the figure, line 3127 can be composed of a single line, but at least one or more lines 3127 can be connected so that if one line 3127 breaks and cannot function properly, the other line 3127 can function properly.

[0300] Figure 18 This is a perspective view showing the indoor unit of an air conditioner in an open state according to another embodiment of the present invention.

[0301] exist Figure 18 In the indoor unit of the air conditioner according to another embodiment of the present invention, the same reference numerals are used for configurations that are the same as those in one embodiment of the present invention and configurations that have the same functions, and detailed descriptions of these configurations are omitted to avoid repetition.

[0302] Reference Figure 18 The main body front shell 1100 and the air supply module 2100 can rotate relative to the protective shell 2300 and open and close in the front and rear direction.

[0303] Furthermore, the protective housing 2300, the heat exchange assembly 3000, and the filter assembly 4000 constitute part of the upper housing 1100 and 1200, and may be a fixed part formed together with the lower housing 5000 in relation to the rotating part.

[0304] The rotating part can be formed integrally on the entire front side.

[0305] The rotating part is rotatably connected to the fixed part and can be formed with a side outlet 2111 for lateral airflow to be discharged.

[0306] Side outlets 2111 can be formed on both sides of the rotating part. In addition, a plurality of side outlets 2111 are formed on one side of the rotating part, and each side outlet 2111 can be arranged spaced apart from each other along the vertical direction of the rotating part.

[0307] A plurality of hinge portions 2430 are provided along the vertical direction of the rotating part, allowing the rotating part to rotate relative to the fixed part. The hinge portions 2430 connect the fixed part and the rotating part, and allow the rotating part to rotate relative to the fixed part.

[0308] Multiple hinge sections 2430 can be arranged spaced apart from each other along the vertical direction of the indoor unit. Therefore, the rotating part that discharges air can rotate as a whole relative to the fixed part, so that the entire interior of the indoor unit can be opened or closed.

[0309] A rotating roller 3122' that rolls relative to the ground may be provided at the lower end of the rotating part. The structure and function of the rotating roller 3122' in another embodiment of the present invention are the same as those of the rotating roller 3122 in one embodiment of the present invention, so detailed description is omitted.

[0310] When the main body front shell 1100 and the air supply module 2100 are opened from the protective shell 2300, the air supply shells 213, 223, 233 and the air supply fans 212, 222, 232 of the air supply module 2100 can be opened to the outside, and at the same time, the front of the protective shell 2300 and the mechanical room of the lower shell 5000 facing the air supply module 2100 can be opened to the outside and exposed.

[0311] During normal operation of the indoor unit, the rotating part and the fixed part can come into contact with each other, thus closing the interior of the indoor unit.

[0312] In addition, when cleaning foreign objects inside the indoor unit, users can easily open the entire interior of the indoor unit by rotating the rotating part.

[0313] After cleaning, users can simply rotate the rotating part again to bring it into contact with the fixed part, thereby closing the interior of the indoor unit and restoring it to its normal operating state. Therefore, users can open or close the entire interior of the indoor unit with a single operation, making cleaning the inside of the indoor unit simple and eliminating the tedious task of disassembling each component individually.

[0314] When the air supply fan assembly 2000 of this utility model reaches the maximum open position and the rotating roller 3122 of the roller bracket 3120 is restricted by the locking part 3124, the air supply fan assembly 2000 can be stably fixed to prevent the center of gravity from moving to the outside of the indoor unit, thereby effectively maintaining the balance of the indoor unit and preventing it from tipping over.

[0315] [Heat Exchange Components]

[0316] The heat exchange assembly 3000 allows indoor air drawn into the upper housing 1100, 1200 to exchange heat with the refrigerant.

[0317] The heat exchange assembly 3000 may include: a heat exchanger 3100 in which refrigerant that exchanges heat with indoor air flows; and a refrigerant pipe 3200 forming a refrigerant flow path, such that refrigerant flows into or out of the heat exchanger 3100.

[0318] The refrigerant pipe 3200 may include: a refrigerant inlet pipe 3210, in which refrigerant flowing into the heat exchanger 3100 flows; and a refrigerant outlet pipe 3220, in which refrigerant discharged from the heat exchanger 3100 flows. In this embodiment of the invention, the refrigerant inlet pipe 3210 or the refrigerant outlet pipe 3220 extends to the back surface portion 5400 of the base of the lower housing 5000 and can be led out to the outside through the refrigerant pipe hole 5401.

[0319] The heat exchanger 3100 is located behind the air supply fan assembly 2000. The heat exchanger 3100 is located between the intake 1210 and the side exhaust 2111, and is capable of exchanging heat with the air flowing inside the indoor unit.

[0320] The heat exchanger 3100 is a cuboid shape extending vertically and can be formed to face the housing body 2310 of the protective housing 2300. The heat exchanger 3100 is disposed between the filter assembly 4000 and the air supply fan assembly 2000. The heat exchanger 3100 may have a length corresponding to the height of the plurality of air supply module sections 2100 arranged vertically.

[0321] The heat exchanger 3100 can be configured inside the back housing 1200 of the main body.

[0322] The main body rear shell 1200 may have a cover shape with a front opening. The main body rear shell 1200 may include: a rear portion 1201 forming an intake port 1210; a first side portion 1202 and a second side portion 1203 forming two side surfaces. The main body rear shell 1200 may include a top portion 1204 forming a top surface.

[0323] The heat exchanger 3100 can be configured in a space defined by the rear portion 1201, the first side portion 1202, the second side portion 1203 and the top portion 1204.

[0324] The heat exchanger 3100 can be securely supported by a heat exchanger fastening part (not shown) formed inside the back shell 1200 of the main body.

[0325] [Filter Component]

[0326] The filter assembly 4000 of this embodiment can remove foreign objects contained in the air flowing into the intake 1210. The filter assembly 4000 can be detachably disposed at the rear of the main body rear housing 1200. The filter assembly 4000 is disposed at the intake 1210 formed at the rear of the main body rear housing 1200 and can filter indoor air flowing into the intake 1210.

[0327] The filter assembly 4000 includes a filter module 4100 for removing foreign objects from the air drawn into the intake port 1210. The filter module 4100 of the filter assembly 4000 is configured at the intake port 1210.

[0328] The filter module 4100 may include: a first filter module 4110 covering the left side of the suction port 1210 of the back shell 1200 of the main body; and a second filter module 4120 covering the right side of the suction port 1210 of the back shell 1200 of the main body.

[0329] The filter module 4100 may include: a pre-filter (not shown) for filtering larger dust particles in the air flowing into the intake 1210; a dust collection filter (not shown) for filtering air by collecting air particles that have been ionized; and an odor removal filter (not shown) for filtering odors in the air.

[0330] The filter module 4100 may include a filter housing 4200 for mounting a pre-filter. A plurality of intake ports 1210 are formed in the filter housing 4200 along the direction in which the pre-filter is mounted. The surface of the filter housing 4200 on which the pre-filter is mounted may include vertical ribs 4220 and horizontal ribs 4230.

[0331] The vertical ribs 4220 and horizontal ribs 4230 are formed in a grid shape, thereby increasing the rigidity of the filter housing 4200. The pre-filter is formed in a mesh shape, which can filter larger foreign objects in the air flowing into the filter module 4100.

[0332] Therefore, the present invention allows the air supply fan assembly 2000 to be easily opened and closed relative to the protective housing 2300 via the hinge portion 2430.

[0333] In addition, this utility model is provided with a roller bracket 3120, which includes a rotating roller 3122. The rotating roller 3122 can roll along the horizontal base 3110 on the outlet side of the protective housing 2300 and support the load of the air supply fan assembly 2000, thereby making it easy to perform the opening action of the air supply fan assembly 2000.

[0334] In addition, by reducing the load on the air supply fan assembly 2000 applied to the hinge portion 2430 when the air supply fan assembly 2000 is open, the support action of the air supply fan assembly 2000 is performed stably, thereby preventing the indoor unit from easily tipping over due to the load of the air supply fan assembly 2000.

Claims

1. An indoor unit of an air conditioner, wherein, Comprising: a housing; and a hinge portion provided at the inner side of the housing; the housing comprising: a rotating portion constituting a part of the housing to be rotated to open / close around the axis of the hinge portion; and a fixed portion constituting a part of the housing to be formed in correspondence with the rotating portion; the indoor unit of the air conditioner further comprising a rotating roller provided at the lower side of the rotating portion to be rolled along with the rotation of the hinge portion.

2. The indoor unit of the air conditioner according to claim 1, wherein the housing comprises: an upper housing; and a lower housing to support the upper housing.

3. The indoor unit of the air conditioner according to claim 2, wherein the upper housing comprises: a heat exchange assembly to perform heat exchange with air flowing in through a suction port; a supply fan assembly to which air passing through the heat exchange assembly is sucked; and a shroud housing to guide air passing through the heat exchange assembly to the supply fan assembly.

4. The indoor unit of the air conditioner according to claim 3, wherein the rotating roller is provided to a bracket body; the bracket body is provided at the lower side of the supply fan assembly.

5. The indoor unit of the air conditioner according to claim 4, wherein the bracket body comprises: a first vertical plate; and a second vertical plate connected to the first vertical plate; the corner portion where the first vertical plate and the second vertical plate of the bracket body intersect is curved to be formed in an arc shape.

6. The indoor unit of the air conditioner according to claim 3, wherein a horizontal base is provided at the lower end of the shroud housing, and the rotating roller rolls along the top surface portion of the horizontal base.

7. The indoor unit of the air conditioner according to claim 4, wherein a roller support portion to support both side ends of the rotating roller is provided to the bracket body.

8. The indoor unit of the air conditioner according to claim 7, wherein the roller support portion is formed with a roller insertion groove into which the rotating roller is inserted, and an axis support groove into which the rotating axis of the rotating roller is inserted and supported.

9. The indoor unit of the air conditioner according to claim 6, further comprising a locking portion provided in the rotation track of the rotating roller with respect to the horizontal base, and limiting the rolling of the rotating roller at a specific open position of the supply fan assembly.

10. The indoor unit of the air conditioner according to claim 9, wherein the locking portion is formed to protrude upward from the top surface portion of the horizontal base to maintain the rotating roller in a fixed state.

11. The indoor unit of the air conditioner according to claim 10, wherein the locking portion is formed in a pair to limit the movement of the rotating roller when the opening / closing angle of the supply fan assembly is 60° and 90°, respectively.

12. The indoor unit of the air conditioner according to claim 11, wherein the locking portion comprises: a first locking portion to limit the rotating roller when the opening / closing angle of the supply fan assembly is 90°. ​ ​ A second locking portion is configured on a rotation track of the rotation roller corresponding to the first locking portion, and restricts the rotation roller from being returned to a state before being restricted by the first locking portion. A third locking portion restricts the rotation roller when the opening and closing angle of the supply fan assembly is 60°. A fourth locking portion is configured on a rotation track of the rotation roller corresponding to the third locking portion, and restricts the rotation roller from being returned to a state before being restricted by the third locking portion.

13. The indoor unit of the air conditioner according to claim 5, wherein The shroud housing includes a cutout portion so as not to interfere with a rotation track of the bracket body.

14. The indoor unit of the air conditioner according to claim 9, wherein A wire is connected between the supply fan assembly and the shroud housing.

15. The indoor unit of the air conditioner according to claim 14, wherein The wire is connected to wire fixing portions respectively provided at a lower end portion of the supply fan assembly and a lower end portion of the shroud housing.

16. The indoor unit of the air conditioner according to claim 15, wherein The wire applies a maximum tension and maintains a tensioned state when the opening and closing angle of the supply fan assembly is a maximum of 60° or a maximum of 90°.

17. The indoor unit of the air conditioner according to claim 1, wherein The rotation portion is formed over an entire front surface of the housing; A rotation roller that rolls with respect to the ground is provided at a lower end of the rotation portion.

18. The indoor unit of the air conditioner according to claim 3, wherein The hinge portion includes: a hinge; and a hinge bracket; The hinge bracket is provided to the shroud housing.

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