CN212618768U

CN212618768U - Air conditioner indoor unit and air conditioner

Info

Publication number: CN212618768U
Application number: CN202021264481.4U
Authority: CN
Inventors: 蔡志才
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a machine and air conditioner in air conditioning, machine includes in the air conditioning: the chassis is provided with a through hole; the bottom of the louver is convexly provided with a rotating shaft, and the rotating shaft is rotatably matched with the through hole; and the driving device is arranged on one side of the base plate, which deviates from the shutter, and is connected to the rotating shaft through the through hole so as to drive the shutter to rotate. The driving device and the louver are arranged on the two opposite sides of the chassis, and the driving device drives the rotating shaft of the louver through the through hole so as to realize the rotation of the louver; therefore, the driving device can be arranged on the lower side of the chassis, the technical problem that the installation space of the end part of the chassis is effective is avoided, the installation difficulty of the driving device is reduced, and the overall assembly convenience of the indoor unit of the air conditioner is improved.

Description

Air conditioner indoor unit and air conditioner

Technical Field

The utility model relates to an air conditioning technology field, in particular to machine and air conditioner in air conditioning.

Background

In the related art air conditioning indoor unit, the driving device for driving the louver is usually installed at the end of the air outlet, i.e., the end of the chassis, and the space at the end of the air outlet in the air conditioner is effective, and the driving device for driving the air deflector needs to be accommodated, which causes the driving structure of the louver to be inconvenient to install and difficult to install.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an indoor unit of air conditioner aims at solving the technical problem who how to improve tripe drive structure assembly convenience.

In order to achieve the above object, the utility model provides an indoor unit of air conditioner includes:

the chassis is provided with a through hole;

the bottom of the louver is convexly provided with a rotating shaft, and the rotating shaft is rotatably matched with the through hole; and

the driving device is arranged on one side, away from the louver, of the chassis and connected to the rotating shaft through the through hole so as to drive the louver to rotate.

Optionally, a fixing groove is formed in an end surface of the rotating shaft, and a driving shaft of the driving device is fixedly matched with the fixing groove.

Optionally, the fixing groove has two opposite first groove walls, and wall surfaces of the two first groove walls are arranged in a plane.

Optionally, the end of the rotating shaft protrudes from the through hole, and a limiting hook is convexly arranged on the peripheral wall of the end of the rotating shaft and used for limiting and abutting against the hole edge of the through hole.

Optionally, the limiting hook has a detachment guide inclined surface facing the edge of the through hole, and/or an installation guide inclined surface facing away from the through hole.

Optionally, the rotating shaft includes two opposite fitting portions, the fixing groove is formed between the two fitting portions, and outer wall surfaces of the two fitting portions are rotatably fitted with a hole wall of the through hole.

Optionally, an oil storage groove is formed in the peripheral wall of the rotating shaft.

Optionally, a limiting ring extending along the circumferential direction of the through hole is convexly arranged on the base plate, a limiting disc is arranged between the rotating shaft and the louver, the circumferential wall of the limiting disc protrudes out of the circumferential wall of the rotating shaft, and the limiting disc abuts against the limiting ring.

Optionally, the limiting disc is provided with a limiting column in a protruding manner on one surface of the chassis, the chassis is provided with a limiting rib in a protruding manner, and the limiting rib is located on a moving track of the limiting column and used for being in limiting abutting connection with the limiting column.

Optionally, the number of the limiting ribs is two, the two limiting ribs are arranged on the moving track of the limiting column at intervals, and the limiting column is located between the two limiting ribs.

Optionally, the top of the limiting ring protrudes out of the top of the limiting rib.

Optionally, a positioning protrusion is convexly arranged on one surface of the limiting disc facing the base disc, a positioning tooth corresponding to the positioning protrusion is formed on the base disc, and when the driving device is closed, the positioning tooth is abutted to the positioning protrusion to fix the louver.

Optionally, the number of the louvers is multiple, the multiple louvers are arranged at intervals along the length direction of the chassis, and the multiple louvers are in transmission connection through a connecting rod.

Optionally, the plurality of louvers includes a driving louver and a driven louver group, the driving louver is driven by the driving device, and the driven louver group and the connecting rod are integrally formed.

Optionally, a forward extending shift lever is convexly arranged on the connecting rod.

Optionally, the chassis is provided with a sinking groove, and the through hole is formed in the bottom of the sinking groove.

Optionally, the indoor unit of an air conditioner is provided as a wall-mounted indoor unit of an air conditioner.

The utility model also provides an air conditioner, including an air condensing units and the indoor set of air conditioning, this indoor set of air conditioning includes: the chassis is provided with a through hole; the bottom of the louver is convexly provided with a rotating shaft, and the rotating shaft is rotatably matched with the through hole; the driving device is arranged on one side, away from the louver, of the chassis and connected to the rotating shaft through the through hole so as to drive the louver to rotate; the air conditioner outdoor unit is connected with the air conditioner indoor unit through a refrigerant pipe.

The driving device and the louver are arranged on the two opposite sides of the chassis, and the driving device drives the rotating shaft of the louver through the through hole so as to realize the rotation of the louver; therefore, the driving device can be arranged on the lower side of the chassis, the technical problem that the installation space of the end part of the chassis is effective is avoided, the installation difficulty of the driving device is reduced, and the overall assembly convenience of the indoor unit of the air conditioner is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of an embodiment of an indoor unit of an air conditioner according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic cross-sectional view of another embodiment of the indoor unit of an air conditioner according to the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

FIG. 7 is a schematic structural view of an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an embodiment of a driven louver group in the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						10	Chassis	11	Through hole	20	Shutter
21	Rotating shaft	30	Drive device	211	Fixing groove
						212	First groove wall	213	Limiting hook	214	Disassembly guide inclined plane
215	Installation guide inclined plane	216	Mating part	217	Oil storage tank
						12	Spacing ring	22	Limiting disc	221	Limiting column
13	Spacing rib	222	Positioning projection	14	Positioning tooth
						40	Connecting rod	23	Driven louver group	41	Deflector rod
15	Sink tank

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, three parallel schemes are included, taking A and/or B as an example, the scheme A or the scheme B is included, or the scheme A and the scheme B meet the requirement at the same time. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an indoor unit of an air conditioner, which can be selected as a wall-mounted indoor unit of an air conditioner, a floor type indoor unit of an air conditioner or a vertical indoor unit of an air conditioner, etc.; the present invention is described with reference to a wall-mounted air conditioner indoor unit, but the present invention is not limited thereto.

In an embodiment of the present invention, as shown in fig. 1 to 8, the indoor unit of an air conditioner includes: the chassis 10 is provided with a through hole 11; the bottom of the louver 20 is convexly provided with a rotating shaft 21, and the rotating shaft 21 is rotatably matched with the through hole 11; the driving device 30 is arranged on one side of the base plate 10, which is far away from the louver 20, and the driving device 30 is connected to the rotating shaft 21 through the through hole 11 so as to drive the louver 20 to rotate.

In this embodiment, the chassis 10 is adjacent to the air outlet of the indoor unit of the air conditioner and connected to the volute of the indoor unit of the air conditioner, so that the louver 20 is disposed corresponding to the air outlet of the indoor unit of the air conditioner. The through holes 11 penetrate the top and bottom of the base plate 10, the louver 20 is mounted on the top of the base plate 10, and the rotating shaft 21 is engaged with the through holes 11 so that the louver 20 can rotate relative to the base plate 10. The base plate 10 extends along the length direction of the air outlet, and the rotating shaft 21 is perpendicular to the extending direction of the base plate 10, so that the louver 20 can rotate around the width direction of the air outlet to realize the left-right air swinging. The driving device 30 can be a stepping motor, the driving device 30 is fixed at the bottom of the chassis 10 and is connected to the rotating shaft 21, the tail end of the rotating shaft 21 can protrude out of the through hole 11 and can also be positioned in the through hole 11, and only the requirement that the driving device 30 can be connected with the rotating shaft 21 is met. The driving device 30 and the rotating shaft 21 may be directly connected or indirectly connected through a shaft sleeve, and the driving device 30 only needs to drive the rotating shaft 21 to rotate without limitation. Compared with the end part of the chassis 10, the driving device 30 can have more installation space under the chassis 10, so that the installation is more convenient, and the driving device 30 can not interfere with the driving structure of the air deflector, so that the installation difficulty can be reduced and the whole assembly efficiency of the air conditioner indoor unit can be improved by installing the driving device 30 under the chassis 10.

In the air-conditioning indoor unit of the utility model, the driving device 30 and the louver 20 are arranged on the two opposite sides of the chassis 10, and the driving device 30 drives the rotating shaft 21 of the louver 20 through the through hole 11 to realize the rotation of the louver 20; therefore, the driving device 30 can be installed at the lower side of the chassis 10, the technical problem that the installation space at the end part of the chassis 10 is effective is avoided, the installation difficulty of the driving device 30 is reduced, and the whole assembly convenience of the air conditioner indoor unit is improved.

As shown in fig. 1 and 2, a fixing groove 211 is formed on an end surface of the rotating shaft 21, and a driving shaft of the driving device 30 is fixedly engaged with the fixing groove 211. In this embodiment, the fixing groove 211 extends along the free end to the fixed end of the rotation shaft 21 to increase the fitting area with the driving shaft, thereby improving the fitting strength. The driving shaft is inserted into the fixing groove 211 to realize the fixed matching with the rotating shaft 21, so that the matching strength can be improved, the space of the fixing groove 211 can be fully considered, the axial size of the driving device 30 and the integral louver 20 is reduced, and the occupied space of the indoor unit of the air conditioner is reduced.

As shown in fig. 7, the fixing groove 211 has two opposite first groove walls 212, and wall surfaces of the two first groove walls 212 are disposed in a plane. In the present embodiment, the driving shaft of the driving device 30 is sandwiched between the two first groove walls 212, and since the wall surfaces of the two first groove walls 212 are flat, and the end of the driving shaft of the driving device 30 is generally flat, the flat first groove walls 212 can be more firmly attached to the side walls of the driving shaft, thereby further improving the fitting strength with the driving shaft.

As shown in fig. 2 and 7, the end of the rotating shaft 21 protrudes from the through hole 11, and a limiting hook 213 is protruded from the peripheral wall of the end of the rotating shaft 21 for limiting and abutting against the hole edge of the through hole 11. In this embodiment, the limiting hook 213 prevents the rotation shaft 21 from being separated from the through hole 11, so as to improve the installation stability of the louver 20. The limiting surface of the limiting hook 213 is inclined to the cross section of the through hole 11 to reduce the contact area with the chassis 10 and ensure the smooth rotation of the rotating shaft 21. The limiting hook 213 can be protruded at two circumferentially opposite positions of the rotating shaft 21 to increase the limiting position and improve the limiting strength and the limiting uniformity.

As shown in fig. 2 and 7, the limiting hook 213 has a detachment guide slope 214 facing the edge of the through hole 11 and/or an installation guide slope 215 facing away from the through hole 11. In this embodiment, the rotation shaft 21 is detachably engaged with the through hole 11, and is engaged with the through hole 11 through the limit hook 213. When the rotating shaft 21 needs to be detached, the limiting hook 213 can be pressed towards the center of the rotating shaft 21, so that the detachment guide inclined surface 214 can slide along the hole edge of the through hole 11 in the deformation process of the limiting hook 213, and finally the limiting hook 213 is separated from the through hole 11. When the rotating shaft 21 needs to be installed, the installation guide inclined surface 215 is abutted to the hole edge of the through hole 11 and pushed towards the bottom of the through hole 11, and the installation guide inclined surface 215 and the disassembly guide inclined surface 214 are arranged, so that the difficulty in disassembling and assembling the rotating shaft 21 can be reduced, and the disassembly and assembly efficiency can be improved.

As shown in fig. 7, the rotating shaft 21 includes two opposite engaging portions 216, the fixing groove 211 is formed between the two engaging portions 216, and outer wall surfaces of the two engaging portions 216 are rotatably engaged with a hole wall of the through hole 11. In this embodiment, after the driving shaft is engaged with the fixing groove 211, the two engaging portions 216 clamp the driving shaft, and the outer wall surface of the engaging portion 216 is a curved surface to be rotatably engaged with the through hole 11. In combination with the above-mentioned embodiment of the first groove wall 212, the first groove wall 212 may be formed on the inner wall surface of the matching portion 216 to improve the fixing strength of the two matching portions 216 to the driving shaft. In combination with the above-mentioned embodiment of the limiting hook 213, the rotating shaft 21 may further include two limiting portions disposed oppositely, each limiting portion is adjacent to each matching portion 216 at an interval, and the limiting hook 213 is protruded on the limiting portion. It can be understood that the matching portion 216 and the limiting portion have elasticity, when the rotating shaft 21 is matched with the through hole 11, the matching portion 216 and the limiting portion are gathered under the acting force of the through hole 11, and when the driving shaft is inserted into the fixing groove 211, the matching portion 216 and the end portion of the limiting portion are spread, so that the limiting hook 213 can protrude from the edge of the through hole 11 along the radial direction, and the limiting effect is achieved.

As shown in fig. 7, an oil reservoir 217 is formed in the outer peripheral wall of the rotary shaft 21. In the present embodiment, the oil storage tank 217 is used for containing lubricating oil to reduce the friction between the rotating shaft 21 and the through hole 11, thereby improving the driving efficiency of the driving device 30 for the rotating shaft 21. The oil reservoir 217 extends in the circumferential direction of the rotating shaft 21 to increase the lubrication area, further reducing the frictional force. In combination with the above-mentioned embodiment of the fitting portion 216, the oil reservoir 217 may be opened on the outer wall surface of the fitting portion 216, so that the rotating shaft 21 is firmly fitted to the driving shaft while reducing the friction force with the through hole 11.

As shown in fig. 1 to 4, a limiting ring 12 extending along the circumferential direction of the through hole 11 is protruded from the base plate 10, a limiting disc 22 is disposed between the rotating shaft 21 and the louver 20, the circumferential wall of the limiting disc 22 protrudes from the circumferential wall of the rotating shaft 21, and the limiting disc 22 abuts against the limiting ring 12. In this embodiment, the limiting ring 12 is protruded from the top of the base plate 10 and is adjacent to the hole edge of the through hole 11, the limiting disc 22 is connected to the fixed end of the rotating shaft 21, and the bottom of the limiting disc 22 abuts against the top of the limiting ring 12, so as to reduce the contact area between the limiting disc 22 and the base plate 10 while limiting the matching depth between the rotating shaft 21 and the through hole 11, thereby reducing the friction force and ensuring the smooth rotation of the louver 20.

As shown in fig. 1 to 4, a limiting column 221 is convexly disposed on one surface of the limiting disc 22 facing the chassis 10, a limiting rib 13 is convexly disposed on the chassis 10, and the limiting rib 13 is located on a moving track of the limiting column 221 and is used for limiting and abutting against the limiting column 221. In this embodiment, the position-limiting column 221 may be located at the front side of the rotating shaft 21, the rotation of the rotating shaft 21 may drive the louver 20, the position-limiting disc 22, and the position-limiting column 221 to rotate together, and after the rotating shaft 21 rotates a certain angle, that is, after the louver 20 rotates a certain range, the position-limiting column 221 may abut against the position-limiting rib 13 to limit the range of motion of the louver 20, so as to ensure that the louver 20 swings in the preset track. In practical application, the top of the limiting ring 12 protrudes out of the top of the limiting rib 13 to prevent the limiting disc 22 from contacting the limiting rib 13, so that the rotating shaft 21 is ensured to rotate smoothly.

Specifically, the number of the limiting ribs 13 is two, the two limiting ribs 13 are arranged on the moving track of the limiting column 221 at intervals, and the limiting column 221 is located between the two limiting ribs 13. In this embodiment, the two limiting ribs 13 are disposed at intervals in the circumferential direction of the rotating shaft 21 and are respectively disposed on the left and right sides of the rotating shaft 21, and the positions where the limiting columns 221 abut against the two limiting ribs 13, that is, the limit positions where the louver 20 swings, so that the swing track of the louver 20 can be limited within the preset range. In addition, the spacing ribs 13 can also be used as a reference object for the wind guiding angle of the louver 20, for example, the spacing between the two spacing ribs 13 and the rotating shaft 21 is the same, the wind guiding surface of the louver 20 passes through the axis of the spacing column 221, when the spacing between the spacing column 221 and the two spacing ribs 13 is the same, it indicates that the wind guiding direction of the louver 20 is the same as the opening direction of the air outlet, and when the spacing column 221 abuts against one of the spacing ribs 13, it indicates that the louver 20 is located at the limit position for shielding the air outlet, thereby controlling the wind guiding angle of the louver 20 by controlling the spacing between the spacing column 221 and the spacing ribs 13, so as to meet the wind requirements in different.

As shown in fig. 4 and 8, a positioning protrusion 222 is protruded from one surface of the limiting disc 22 facing the base disc 10, a positioning tooth 14 corresponding to the positioning protrusion 222 is formed on the base disc 10, and when the driving device 30 is closed, the positioning tooth 14 abuts against the positioning protrusion 222 to fix the louver 20. In the present embodiment, the positioning teeth 14 extend along the circumferential direction of the through hole 11, and the extension dimension is consistent with the swing stroke of the louver 20, when the driving device 30 is opened, the positioning protrusions 222 rotate along with the limiting disc 22, and at this time, although the positioning protrusions 222 form resistance in contact with the positioning teeth 14, the resistance is smaller than the driving force of the driving device 30, so that the rotating shaft 21 can continue to rotate. When the driving device 30 is closed, the acting force between the positioning protrusion 222 and the positioning teeth 14 is greater than the pushing force of gravity or air flow, so that the positioning protrusion 222 can be fixed at the position when the driving device 30 is closed, that is, the louver 20 can be fixed at the preset angle, thereby improving the stability of the air guiding effect of the louver 20. In combination with the above embodiments of the limiting column 221 and the limiting rib 13, the limiting column 221 and the positioning protrusion 222 may be disposed at two circumferentially opposite positions of the limiting disc 22, and the positioning teeth 14 and the limiting rib 13 are correspondingly disposed at two circumferentially opposite positions of the through hole 11, so as to avoid the mutual interference between the limiting structure and the positioning structure.

As shown in fig. 8, the number of the louvers 20 is plural, a plurality of the louvers 20 are arranged at intervals along the length direction of the chassis 10, and the plural louvers 20 are drivingly connected by a connecting rod 40. In the present embodiment, the plurality of louvers 20 are all connected to a rotating shaft 21, and the number and the positions of the through holes 11 on the chassis 10 also correspond to the louvers 20, so that the air guiding effect can be achieved for the air flowing through the air outlet. The connecting rods 40 extend along the arrangement direction of the plurality of louvers 20 and are rotatably connected with the louvers 20, so that the driving device 30 only needs to drive one louver 20 to drive the other louvers 20 to rotate, the number of the driving devices 30 is reduced, and the indoor unit of the air conditioner is simplified. In connection with the above-described embodiment, the additional structures of the plurality of louvers 20 may be identical or may have differences; for example, the limiting column 221 may be only disposed on the louver 20 directly driven by the driving device 30 to reduce the number of the limiting ribs 13 on the chassis 10; the positioning protrusions 222 can be disposed on all the driven louvers 20 to improve the positioning effect and reduce the force applied to the connecting rods 40.

As shown in fig. 8, the plurality of louvers 20 includes a driving louver 20 and a driven louver group 23, the driving louver 20 is driven by the driving device 30, and the driven louver group 23 is integrally formed with the connecting rod 40. In the present embodiment, the connecting rod 40 and the driven louver group 23 can be integrally injection-molded to improve the processing efficiency; during the injection molding process, the connection part of the connecting rod 40 and each driven louver 20 can form a thin-wall structure so as to realize the relative movement of the connecting rod 40 and the driven louver group 23. The connecting rod 40 is provided with a transmission hole, the driving louver 20 is convexly provided with a transmission shaft, and the transmission hole is rotatably matched with the transmission shaft, so that the driving louver 20 can drive the connecting rod 40 to move, and the driven louver group 23 is driven to move. It is understood that the structural strength of the driving louver 20 may be higher than that of the driven louver group 23 to extend the working life of the driving louver 20.

As shown in fig. 8, a rod 41 extending forward is protruded from the connecting rod 40. In this embodiment, the lever 41 extends toward the outside of the outlet for easy movement by the user. By shifting the shift lever 41, the wind guiding angle of the louver 20 can be manually changed without the need for the operation of the driving device 30, thereby improving convenience. The shift lever 41 may be protruded at a middle portion of the connecting rod 40 in a length direction thereof, so that the moments of the shift lever 41 and the two end portions of the connecting rod 40 are more balanced.

As shown in fig. 4, the chassis 10 is provided with a sinking groove 15, and the through hole 11 is provided at the bottom of the sinking groove 15. In this embodiment, the sinking groove 15 can hide and protect the fixed end of the rotating shaft 21, so as to prevent the working process of the rotating shaft 21 from being obstructed. With the above embodiment, the limiting ring 12, the limiting rib 13 and the positioning teeth 14 can be disposed in the sinking groove 15, so as to ensure the stability of the positioning effect and the limiting effect by the positioning structure and the limiting structure of the louver 20.

The utility model discloses still provide an air conditioner, this air conditioner includes machine in air condensing units and an air conditioning, and the concrete structure of this machine in air conditioning refers to above-mentioned embodiment, because this air conditioner has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The air conditioner outdoor unit is connected with the air conditioner indoor unit through a refrigerant pipe.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An indoor unit of an air conditioner, comprising:

the chassis is provided with a through hole;

2. An indoor unit of an air conditioner as claimed in claim 1, wherein a fixing groove is formed at an end surface of the rotation shaft, and a driving shaft of the driving unit is fixedly engaged with the fixing groove.

3. The indoor unit of claim 2, wherein the fixing groove has two opposite first groove walls, and wall surfaces of the two first groove walls are disposed in a plane.

4. The indoor unit of claim 1, wherein a distal end of the rotation shaft protrudes from the through hole, and a limiting hook is protruded on a circumferential wall of the distal end of the rotation shaft to limit the edge of the through hole.

5. The indoor unit of claim 4, wherein the stopper hook has a removal guide slope facing toward the hole edge of the through hole and/or an installation guide slope facing away from the through hole.

6. An indoor unit of an air conditioner according to claim 2, wherein the rotary shaft includes two engaging portions provided opposite to each other, the fixing groove is formed between the two engaging portions, and outer wall surfaces of the two engaging portions are rotatably engaged with a wall surface of the through hole.

7. An indoor unit of an air conditioner according to claim 1, wherein an oil reservoir is formed in an outer peripheral wall of the rotary shaft.

8. The indoor unit of claim 1, wherein a stopper ring extending in a circumferential direction of the through hole is protruded from the base plate, a stopper plate is disposed between the rotary shaft and the louver, a circumferential wall of the stopper plate protrudes from a circumferential wall of the rotary shaft, and the stopper plate abuts against the stopper ring.

9. The indoor unit of claim 8, wherein a limiting post is protruded from a surface of the limiting disc facing the base plate, and a limiting rib is protruded from the base plate and located on a moving track of the limiting post to be in limiting abutment with the limiting post.

10. The indoor unit of claim 9, wherein the number of the limiting ribs is two, the two limiting ribs are spaced apart from each other on a moving track of the limiting post, and the limiting post is located between the two limiting ribs.

11. The indoor unit of claim 9, wherein the top of the stopper ring protrudes from the top of the stopper rib.

12. The indoor unit of claim 8, wherein a positioning protrusion is protruded from a surface of the limiting plate facing the base plate, a positioning tooth corresponding to the positioning protrusion is formed on the base plate, and when the driving unit is turned off, the positioning tooth abuts against the positioning protrusion to fix the louver.

13. An indoor unit of an air conditioner as claimed in any one of claims 1 to 12, wherein the number of said louver is plural, a plurality of said louvers are arranged at intervals along the length direction of said base plate, and a plurality of said louvers are drivingly connected by a link.

14. The indoor unit of claim 13, wherein the plurality of louvers includes a driving louver and a driven louver, the driving louver is driven by the driving device, and the driven louver is integrally formed with the connecting rod.

15. An indoor unit of an air conditioner according to claim 13, wherein a lever extending forward is projected from the link.

16. The indoor unit of an air conditioner according to any one of claims 1 to 12, wherein the base plate is provided with a sinking groove, and the through hole is provided at a bottom of the sinking groove.

17. The indoor unit of claim 1, wherein the indoor unit is provided as a wall-mounted indoor unit.

18. An air conditioner comprising an outdoor unit and the indoor unit as claimed in any one of claims 1 to 17, wherein the outdoor unit and the indoor unit are connected by refrigerant pipes.