CN211177072U - Air conditioner indoor unit and air conditioner - Google Patents

Abstract

The utility model discloses a machine and air conditioner in air conditioning, machine in the air conditioning include the casing, and the air outlet has been seted up to the casing, and machine still includes in the air conditioning: the wind guide frame, the upper gear box arranged above the wind guide frame and the first motor connected to the upper gear box; the air guide frame is rotatably arranged at the air outlet, the upper gear box comprises a bottom shell and a top cover, an installation cavity is formed in the top cover, and the first motor is arranged in the installation cavity; or, the air conditioning indoor unit further comprises: the wind guide frame, the lower gear box arranged below the wind guide frame, the second motor connected to the bottom of the lower gear box and the moisture-proof cover covering the second motor are arranged on the wind guide frame; the wind-guiding frame is rotatably installed at the air outlet, one of the top parts of the lower gear box and the moisture-proof cover is provided with a sealing groove, and the other one of the top parts of the lower gear box and the moisture-proof cover is convexly provided with a sealing rib matched with the sealing groove. The utility model discloses machine has improved the dampproofing effect to the motor in the air conditioning.

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

The air guide frame of the indoor unit of the air conditioner is driven by the gear box and the driving motor, and the driving motor is exposed out of the gear box, so that condensation is easy to generate, and potential safety hazards are caused. The motor is dampproof through increasing the shroud in addition on every motor surface in prior art, but this kind of mode leakproofness is relatively poor, and dampproofing effect is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an indoor unit of air conditioner, aim at solving the technical problem who how to improve the dampproofing effect of motor.

In order to achieve the above object, the utility model provides an indoor unit of air conditioner, which comprises a housin, the air outlet has been seted up to the casing, indoor unit of air conditioner still includes: the wind guide frame, the upper gear box arranged above the wind guide frame and the first motor connected to the upper gear box are arranged on the wind guide frame; the air guide frame is rotatably arranged at the air outlet, the upper gear box comprises a bottom shell and a top cover, an installation cavity is formed in the top cover, and the first motor is arranged in the installation cavity;

or, the air conditioning indoor unit further comprises: the wind guide device comprises a wind guide frame, a lower gear box arranged below the wind guide frame, a second motor connected to the bottom of the lower gear box, and a moisture-proof cover covering the second motor; the wind guide frame is rotatably arranged at the wind outlet, one of the top parts of the lower gear box and the moisture-proof cover is provided with a sealing groove, and the other one of the top parts of the lower gear box and the moisture-proof cover is convexly provided with a sealing rib matched with the sealing groove.

Optionally, the top cap includes the lid and connect in the installation cover of lid, the via hole has been seted up to the lid, the uncovered of installation cover with the via hole meets, the installation cavity form in the installation cover, first motor pass through the via hole install in the installation cavity.

Optionally, the mounting cover is provided with a fixing hole, and the housing of the first motor is fixed to the fixing hole through a fastener.

Optionally, a fixing rib is convexly arranged at the upper end of the inner peripheral wall of the mounting cover.

Optionally, a guide slope is formed at a lower end of the fixing rib to guide the first motor toward an upper end of the fixing rib.

Optionally, the cover body is further formed with a wiring groove communicated with the mounting cavity, and an electrical connection line of the first motor extends out of the cover body through the wiring groove.

Optionally, a limiting rib is convexly arranged on the side wall of the groove opening of the wiring groove and used for limiting and supporting the electric connecting wire of the first motor.

Optionally, the number of the limiting ribs is multiple, and the multiple limiting ribs are arranged at intervals along the extending direction of the cabling channel and are distributed on two opposite side walls of the cabling channel in a staggered manner.

Optionally, the seal groove is opened in the top of dampproofing cover and follows the circumference of dampproofing cover extends, sealed muscle protruding locate the bottom of lower gear box and follow the circumference of lower gear box extends.

Optionally, a wire passing hole is formed in a side wall of the opening of the moisture-proof cover, and an electric connection wire of the second motor extends out of the moisture-proof cover through the wire passing hole.

Optionally, a plurality of spacing ribs corresponding to the wire passing holes are convexly arranged at the bottom of the lower gear box, and a wire passing hole is formed between every two adjacent spacing ribs.

Optionally, the hole wall of the wire passing hole extends towards the inside of the moisture-proof cover to form a positioning groove, the bottom of the spacing rib abuts against the bottom of the positioning groove, and the side wall of the spacing rib abuts against the side wall of the positioning groove.

Optionally, the top of the side wall of the positioning groove protrudes out of the opening of the moisture-proof cover; the bottom of the locating groove is also convexly provided with a limiting strip positioned outside the spacing rib, and the limiting strip faces towards the side wall in the moisture-proof cover and is abutted against the lower end of the spacing rib.

Optionally, the bottom of the lower gear box is provided with a water leakage hole, the side wall of the moisture-proof cover is concave in the water leakage hole to form a water retaining platform, and the top of the water retaining platform is provided with a water drainage hole opposite to the water leakage hole.

Optionally, a water retaining ring extending along the circumferential direction of the drain hole is convexly arranged at the top of the water retaining table, and the top of the water retaining ring abuts against the lower gear box.

The utility model also provides an air conditioner, including an air conditioning indoor unit, this air conditioning indoor unit includes the casing, the air outlet has been seted up to the casing, the air conditioning indoor unit still includes: the wind guide frame, the upper gear box arranged above the wind guide frame and the first motor connected to the upper gear box are arranged on the wind guide frame; the air guide frame is rotatably arranged at the air outlet, the upper gear box comprises a bottom shell and a top cover, an installation cavity is formed in the top cover, and the first motor is arranged in the installation cavity;

or, the air conditioning indoor unit further comprises: the wind guide device comprises a wind guide frame, a lower gear box arranged below the wind guide frame, a second motor connected to the bottom of the lower gear box, and a moisture-proof cover covering the second motor; the wind guide frame is rotatably arranged at the wind outlet, one of the top parts of the lower gear box and the moisture-proof cover is provided with a sealing groove, and the other one of the top parts of the lower gear box and the moisture-proof cover is convexly provided with a sealing rib matched with the sealing groove.

The air conditioner indoor unit of the utility model has the advantages that the top cover of the upper gear box forms the installation cavity, so that the first motor can be accommodated in the installation cavity, the condensation of the first motor is effectively prevented, and the moisture-proof effect on the first motor is improved; or, realize dampproofing cover and the sealed cooperation of lower gear box through seal groove and sealed muscle, effectively prevent the second motor condensation, improved the dampproofing effect to the second motor.

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 an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a schematic structural view of an embodiment of the middle cap of the present invention;

fig. 5 is a schematic structural view of an embodiment of the moisture-proof cover of the present invention;

fig. 6 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic cross-sectional view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 9 is a partial enlarged view of fig. 8 at D.

The reference numbers illustrate:

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 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 floor type indoor unit of an air conditioner or a vertical hanging type indoor unit of an air conditioner, etc.; the present invention is described with reference to a floor type air conditioner indoor unit, but the present invention is not limited thereto. The indoor unit of the air conditioner is provided with an air inlet, an air outlet and a heat exchange air duct communicated with the air inlet and the air outlet, and the air outlet usually extends along the vertical direction. The indoor unit of the air conditioner also typically includes an indoor heat exchanger disposed in the heat exchange duct, and the indoor heat exchanger is used for adjusting the temperature of indoor air, such as cooling or heating. The air-conditioning indoor unit also comprises a wind wheel arranged in the heat exchange air duct, and the wind wheel is used for driving air to flow; wherein, the wind wheel can be selected as a cross flow wind wheel and is arranged on the air outlet side of the indoor heat exchanger. When the indoor unit of the air conditioner works, the wind wheel drives indoor air to flow and drives the indoor air to enter the heat exchange air channel from the air inlet, and the flowing air flows to the air outlet after heat exchange of the indoor heat exchanger and is sent out through the air guide frame 10.

In the embodiment of the present invention, as shown in fig. 1 to 9, the indoor unit of an air conditioner further includes: the wind guide device comprises a wind guide frame 10, an upper gear box 20 arranged above the wind guide frame 10 and a first motor 30 connected to the upper gear box 20; the air guide frame 10 is rotatably installed at the air outlet, the upper gear box 20 includes a bottom shell 21 and a top cover 22, the top cover 22 forms an installation cavity 221, and the first motor 30 is arranged in the installation cavity 221;

or, the air conditioning indoor unit further comprises: the wind guide device comprises a wind guide frame 10, a lower gear box 40 arranged below the wind guide frame 10, a second motor 50 connected to the bottom of the lower gear box 40, and a moisture-proof cover 60 covering the second motor 50; the wind guide frame 10 is rotatably mounted at the wind outlet, one of the top parts of the lower gear box 40 and the moisture-proof cover 60 is provided with a sealing groove 61, and the other one is convexly provided with a sealing rib 41 matched with the sealing groove 61.

In this embodiment, the air guiding frame 10 is rotatably disposed at the air outlet of the air conditioning indoor unit, and the rotation axis of the air guiding frame 10 extends along the longitudinal direction to change the air supply direction of the air conditioning indoor unit in the horizontal direction. The first motor 30 is used for driving a gear assembly in the upper gear box 20 to drive the air guide frame 10 to rotate; the second motor 50 is used for driving and driving a gear assembly in the lower gear box 40 to drive the wind guide frame 10 to rotate. The mounting cavity 221 is formed by the concave-up inner wall surface of the top cover 22, the transverse dimension of the mounting cavity 221 can be larger than that of the first motor 30, and can also be matched with the first motor 30, and only the requirement that the first motor 30 can be accommodated in the mounting cavity 221 is met. The first motor 30 is accommodated in the mounting cavity 221, that is, accommodated in the upper gear box 20 together with the gear assembly, so that air flow around the first motor 30 and the upper gear box 20 can be effectively isolated, condensation on the surface of the first motor 30 is prevented, and the moisture-proof effect on the first motor 30 is improved.

The moisture-proof cover 60 and the lower gear box 40 are in sealing fit with the sealing groove 61 through the sealing rib 41, so that the sealing performance of the moisture-proof cover 60 and the lower gear box 40 is improved, and the moisture-proof effect on the second motor 50 is improved. In practical application, the indoor unit of the air conditioner further comprises a louver arranged on the air guide frame 10 and a third motor for driving the louver to swing, the third motor is also arranged at the bottom of the lower gear box 40, and the moisture-proof cover 60 can be covered with the third motor together, so that the utilization rate of the moisture-proof cover 60 is improved.

The air-conditioning indoor unit of the utility model has the advantages that the top cover 22 of the upper gear box 20 forms the installation cavity 221, so that the first motor 30 can be accommodated in the installation cavity 221, the condensation of the first motor 30 is effectively prevented, and the moisture-proof effect on the first motor 30 is improved; or, realize dampproofing cover 60 and the sealed cooperation of lower gear box 40 through seal groove 61 and sealed muscle 41, effectively prevent the condensation of second motor 50, improved the dampproofing effect to second motor 50.

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, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Specifically, as shown in fig. 2 and 4, the top cover 22 includes a cover 222 and an installation cover 223 connected to the cover 222, the cover 222 is provided with a through hole, an opening of the installation cover 223 is connected to the through hole, the installation cavity 221 is formed in the installation cover 223, and the first motor 30 is installed in the installation cavity 221 through the through hole. In the present embodiment, the opening of the mounting cover 223 faces downward and contacts with the via hole from the back of the cover 222, the first motor 30 is located above the bottom case 21, and when the top cover 22 covers the bottom case 21, the mounting cover 223 covers the first motor 30 to store the first motor 30 in the top cover 22. This reduces the size of the mounting cover 223, and reduces the space occupied by the mounting cover 223. The mounting cover 223 may be integrally provided with the cover body 222 to improve the productivity of the top cover 22.

In practical applications, as shown in fig. 2 and 4, the mounting cover 223 is provided with a fixing hole 224, and the housing of the first motor 30 is fixed to the fixing hole 224 by a fastener. In this embodiment, the bottom wall of the cover 222 is recessed upward to form a fixing groove communicated with the mounting cavity 221, the fixing hole 224 is formed in the bottom of the fixing groove, the housing of the first motor 30 is provided with a fastening hole, and the fastening hole and the fixing hole 224 can be connected in series by a fastening member, so that the first motor 30 is fixedly matched with the mounting cover 223.

In one embodiment, as shown in fig. 2 and 4, the fixing rib 225 is protruded from the upper end of the inner peripheral wall of the mounting cover 223. In the present embodiment, the fixing rib 225 is fixedly abutted with the peripheral wall of the first motor 30 to achieve the fixed fitting of the first motor 30 and the mounting cover 223. The number of the fixing ribs 225 may be plural and be arranged at intervals along the circumferential direction of the mounting cover 223 to increase the fitting portion and the fitting area with the first motor 30, and improve the assembling stability of the first motor 30.

Specifically, as shown in fig. 4, a guide slope 226 is formed at a lower end of the fixing rib 225 to guide the first motor 30 toward an upper end of the fixing rib 225. In this embodiment, the guide slope 226 is formed on the surface of the fixing rib 225 departing from the inner wall of the mounting cover 223, and the top edge of the first motor 30 can slide to the upper end of the fixing rib 225 along the guide slope 226 after contacting the guide slope 226, so that the mounting difficulty of the first motor 30 is reduced, and the mounting efficiency of the first motor 30 is improved.

In an embodiment, as shown in fig. 4, the cover 222 is further formed with a wiring groove 227 communicated with the mounting cavity 221, and the electrical connection wire of the first motor 30 extends out of the cover 222 through the wiring groove 227. In this embodiment, the two ends of the wire trough 227 are through, wherein one end is communicated with the mounting cavity 221, and the other end is communicated with the edge of the through cover 222; the electrical connection wires of the first motor 30 may extend along the cabling channel 227 to the outside of the top cover 22 for connection to a power source or an electrical control box. The wiring groove 227 can be bent and extended to make the electrical connection line extend in a winding manner in the cover 222, so as to reduce the exposed amount of the electrical connection line, thereby effectively protecting the electrical connection line.

Specifically, as shown in fig. 4, a limiting rib 228 is protruded on a side wall of the slot 227 for limiting and supporting the electrical connection line of the first motor 30. In the present embodiment, since the wiring groove 227 is formed in the top cover 22, the wiring groove 227 is open downward, and the electrical connection wire abuts against the top surface of the limiting rib 228, so that the electrical connection wire is stably accommodated in the wiring groove 227, the electrical connection wire is prevented from falling to the bottom case 21, and the protection effect on the electrical connection wire is improved.

In practical application, as shown in fig. 4, the number of the limiting ribs 228 is multiple, and the multiple limiting ribs 228 are arranged at intervals along the extending direction of the cabling slot 227 and are distributed on two opposite side walls of the cabling slot 227 in a staggered manner. In this embodiment, a plurality of limiting ribs 228 are disposed on two side walls of the wiring slot 227 at intervals along the extending direction of the wiring slot 227, and the limiting ribs 228 on the two side walls of the wiring slot 227 are staggered with each other, so that the supporting area and the supporting position of the electrical connection wire can be increased, and the electrical connection wire can be conveniently placed into the wiring slot 227 from the notch of the wiring slot 227.

In one embodiment, as shown in fig. 3, 5 and 7, the sealing groove 61 is opened at the top of the moisture-proof cover 60 and extends along the circumferential direction of the moisture-proof cover 60, and the sealing rib 41 is protruded at the bottom of the lower gear box 40 and extends along the circumferential direction of the lower gear box 40. In the present embodiment, the opening of the moisture proof cover 60 faces upward, and the sealing groove 61 is opened at the opening end of the moisture proof cover 60 and extends in the circumferential direction of the moisture proof cover 60. The sealing rib 41 is protruded at the bottom of the lower gear box 40, and the shape and position of the sealing rib 41 correspond to the sealing groove 61, so as to be in sealing fit with the sealing groove 61, thereby improving the moisture-proof effect of the moisture-proof cover 60. The top of dampproof cover 60 can be outwards protruding to establish the stationary blade, and the fastening hole is seted up to the stationary blade, and the fixed orifices 224 that corresponds with the fastening hole can be seted up to lower gear box 40, and fixed orifices 224 and fastening hole concatenate through the fastener to realize dampproof cover 60 and lower gear box 40's fixed Assembly.

Specifically, as shown in fig. 5 and 9, a wire passing hole 62 is opened in a side wall of the moisture-proof cover 60 at the opening, and the electrical connection wire of the second motor 50 extends out of the moisture-proof cover 60 through the wire passing hole 62. In this embodiment, the electrical connection wire of the second motor 50 extends out of the moisture-proof cover 60 through the wire passing hole 62 to be connected with the power supply or the electronic control box, so as to electrically drive the air guiding frame 10.

In practical application, as shown in fig. 7 and 9, a plurality of spacing ribs 42 corresponding to the wire passing holes 62 are protruded from the bottom of the lower gear box 40, and a wire passing hole 43 is formed between two adjacent spacing ribs 42. In the present embodiment, the spacing rib 42 abuts against the hole wall of the wire passing hole 62, and the wire feeding hole 43 overlaps the wire passing hole 62, that is, the spacing rib 42 divides the wire feeding hole 43 into a plurality of wire passing holes 62. The bottom of lower gear box 40 still is equipped with the third motor that is used for driving the tripe wobbling to and the fourth motor of drive air conditioner switch door, the electric connecting wire of each motor stretches out outside dampproofing cover 60 through each line hole 62 respectively, in order to share the electric connecting wire of different motors, make the line of walking of air conditioning indoor set more reasonable orderly.

In an embodiment, as shown in fig. 7 and 9, the hole wall of the wire passing hole 62 extends into the moisture-proof cover 60 to form a positioning slot, the bottom of the spacing rib 42 abuts against the bottom of the positioning slot, and the sidewall of the spacing rib 42 abuts against the sidewall of the positioning slot. In this embodiment, the cooperation is inlayed with the constant head tank to the interval muscle 42, can improve cooperation intensity and leakproofness, reduces moisture and gets into in the dampproofing cover 60 to improve dampproofing cover 60 and the dampproofing effect of lower gear box 40 complex.

Specifically, as shown in fig. 5, 7 and 9, the top of the side wall of the positioning groove protrudes out of the opening of the moisture-proof cover 60; the tank bottom of constant head tank is protruding to be equipped with still to be located spacing muscle 42 outside spacing bead 631, spacing bead 631 orientation the lateral wall butt in dampproofing cover 60 the lower extreme of spacing muscle 42. In this embodiment, spacing bar 631 extends along the width direction of constant head tank, and the lateral wall butt of interval muscle 42 lower extreme is in the inside wall of spacing bar 631 to it is effective spacing to spacing muscle 228, prevents that spacing muscle 228 from breaking away from the constant head tank by the extrusion, thereby improves the stability of spacing muscle 228. The lateral wall top protrusion of constant head tank in dampproofing uncovered of cover 60, can with the spacing butt of sealed muscle 41 to can cooperate spacing strip 631 to make spacing muscle 228 and constant head tank inlay each other and establish the cooperation, improve cooperation intensity.

In an embodiment, as shown in fig. 5, 7 and 9, the bottom of the lower gear box 40 is opened with a water leakage hole 43, the sidewall of the moisture-proof cover 60 is recessed corresponding to the water leakage hole 43 to form a water blocking platform 64, and the top of the water blocking platform 64 is opened with a water drainage hole 641 opposite to the water leakage hole 43. In this embodiment, the water leakage hole 43 is used for discharging the condensed water flowing to the lower gear box 40 out of the lower gear box 40, the water blocking platform 64 is located below the water leakage hole 43, the water leakage hole 641 is opposite to the water leakage hole 43, and the lower side of the water leakage hole 641 is the outside of the moisture-proof cover 60, so that the water in the lower gear box 40 can flow out of the moisture-proof cover 60 through the water leakage hole 43 and the water leakage hole 641, and the water discharging function of the moisture-proof cover 60 is realized.

Specifically, as shown in fig. 5 and 9, a water blocking ring 642 protruding from the top of the water blocking table 64 extends along the circumferential direction of the water discharge hole 641, and the top of the water blocking ring 642 abuts against the lower gear box 40. In the embodiment, when the water retaining ring 642 abuts against the lower gear box 40, it is surrounded by the water leakage hole 43 to prevent the condensed water from flowing into the moisture-proof cover 60, so as to further improve the drainage performance of the moisture-proof cover 60.

The utility model discloses still provide an air conditioner, this air conditioner includes machine in air condensing units and the air conditioning, and the concrete structure of this machine in the 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 (16)

1. An indoor unit of an air conditioner, which comprises a shell, wherein the shell is provided with an air outlet, and is characterized in that,

the air-conditioning indoor unit further comprises: the wind guide frame, the upper gear box arranged above the wind guide frame and the first motor connected to the upper gear box are arranged on the wind guide frame; the air guide frame is rotatably arranged at the air outlet, the upper gear box comprises a bottom shell and a top cover, an installation cavity is formed in the top cover, and the first motor is arranged in the installation cavity;

or, the air conditioning indoor unit further comprises: the wind guide device comprises a wind guide frame, a lower gear box arranged below the wind guide frame, a second motor connected to the bottom of the lower gear box, and a moisture-proof cover covering the second motor; the wind guide frame is rotatably arranged at the wind outlet, one of the top parts of the lower gear box and the moisture-proof cover is provided with a sealing groove, and the other one of the top parts of the lower gear box and the moisture-proof cover is convexly provided with a sealing rib matched with the sealing groove.

2. The indoor unit of claim 1, wherein the top cover includes a cover body and a mounting cover connected to the cover body, the cover body defines a through hole, an opening of the mounting cover is connected to the through hole, the mounting cavity is formed in the mounting cover, and the first motor is mounted in the mounting cavity through the through hole.

3. The indoor unit of an air conditioner according to claim 2, wherein the installation cover is provided with a fixing hole, and the casing of the first motor is fixed to the fixing hole by a fastening member.

4. An indoor unit of an air conditioner as claimed in claim 2, wherein fixing ribs are protruded from an upper end of an inner peripheral wall of the installation cover.

5. An indoor unit of an air conditioner according to claim 4, wherein a lower end of the fixing rib is formed with a guide slope to guide the first motor toward an upper end of the fixing rib.

6. The indoor unit of air conditioner as claimed in claim 2, wherein the cover body is further formed with a wiring groove communicating with the installation cavity, and an electric connection line of the first motor extends to the outside of the cover body through the wiring groove.

7. The indoor unit of claim 6, wherein a limiting rib is protruded from a sidewall of the slot of the routing slot to limit and support the electrical connection line of the first motor.

8. The indoor unit of claim 7, wherein the number of the limiting ribs is plural, and the plurality of limiting ribs are spaced along the extending direction of the routing groove and are distributed on two opposite side walls of the routing groove in a staggered manner.

9. The indoor unit of an air conditioner according to claim 1, wherein the sealing groove is formed in the top of the moisture proof cover and extends in the circumferential direction of the moisture proof cover, and the sealing rib is protruded in the bottom of the lower gear box and extends in the circumferential direction of the lower gear box.

10. The indoor unit of claim 1, wherein a wire passing hole is formed in a side wall of the opening of the moisture proof cover, and an electric connection wire of the second motor extends to the outside of the moisture proof cover through the wire passing hole.

11. The indoor unit of an air conditioner as claimed in claim 10, wherein a plurality of spacing ribs corresponding to the wire passing holes are protruded from the bottom of the lower gear box, and a wire passing hole is formed between two adjacent spacing ribs.

12. The indoor unit of an air conditioner according to claim 11, wherein a positioning groove is formed in a wall of the wire passing hole extending toward the inside of the moisture proof cover, a bottom of the spacer rib abuts against a bottom of the positioning groove, and a sidewall of the spacer rib abuts against a sidewall of the positioning groove.

13. The indoor unit of an air conditioner according to claim 12, wherein the top of the sidewall of the positioning groove protrudes from the opening of the moisture proof cover; the bottom of the locating groove is also convexly provided with a limiting strip positioned outside the spacing rib, and the limiting strip faces towards the side wall in the moisture-proof cover and is abutted against the lower end of the spacing rib.

14. The indoor unit of claim 1, wherein a water leakage hole is formed at the bottom of the lower gear box, a water blocking platform is formed at the side wall of the moisture-proof cover corresponding to the water leakage hole and concaved, and a water drainage hole opposite to the water leakage hole is formed at the top of the water blocking platform.

15. The indoor unit of air conditioner as claimed in claim 14, wherein a water guard ring is protruded from a top of the water guard, the water guard ring extending along a circumferential direction of the drain hole, and a top of the water guard ring abuts against the lower gear box.

16. An air conditioner characterized by comprising an indoor unit of an air conditioner according to any one of claims 1 to 15.

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