Air conditioner indoor unit and air conditioner

Abstract

The application discloses an air conditioner indoor unit and an air conditioner, wherein the air conditioner indoor unit comprises a shell, an indoor heat exchanger and a connecting piece, the shell comprises a front volute assembly and a rear volute assembly, the front volute assembly and the rear volute assembly are matched to form a heat exchange air duct, the front volute assembly comprises a water pan, the indoor heat exchanger is arranged in the heat exchange air duct and located above the water pan, the connecting piece comprises a first connecting end and a second connecting end, the first connecting end is fixedly connected with the water pan, and the second connecting end is fixedly connected with the rear volute assembly, wherein the connecting piece is used for applying a tension force to the water pan towards the indoor heat exchanger to resist the trend that the distance between the water pan and the indoor heat exchanger becomes larger. The technical scheme of the application can resist the trend that the distance between the water pan and the indoor heat exchanger becomes larger through the tension force generated by the connecting piece, and deformation of the water pan is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and an air conditioner applying the same. BACKGROUND

[0002] In the related art, the front volute assembly of the air conditioner indoor unit is provided with a water pan, but since the general water pan itself has poor strength, when the water pan receives the condensed water flowing out of the indoor heat exchanger, the water pan is prone to deformation, thereby causing the distance between the water pan and the indoor heat exchanger to gradually increase, so that the water pan cannot well receive the condensed water flowing out of the indoor heat exchanger, affecting the refrigeration heat exchange efficiency of the air conditioner indoor unit. SUMMARY

[0003] The embodiments of the present application provide an air conditioner indoor unit and an air conditioner, which can resist the trend of the distance between the water pan and the indoor heat exchanger increasing by the tension force generated by the connecting piece, and prevent the water pan from deforming.

[0004] In a first aspect, the embodiments of the present application provide an air conditioner indoor unit, which comprises:

[0005] A shell comprising a front volute assembly and a rear volute assembly, the front volute assembly and the rear volute assembly cooperatively enclosing a heat exchange air duct, the front volute assembly comprising a water pan;

[0006] An indoor heat exchanger arranged in the heat exchange air duct and located above the water pan; and

[0007] A connecting piece comprising a first connecting end and a second connecting end, the first connecting end being connected with the water pan, and the second connecting end being connected with the rear volute assembly, wherein the connecting piece is configured to apply a tension force to the water pan towards the indoor heat exchanger, so as to resist the trend of the distance between the water pan and the indoor heat exchanger increasing.

[0008] In some embodiments, the indoor heat exchanger, the front volute assembly and the rear volute assembly enclose an air duct space, the air duct space is located in the heat exchange air duct, and the connecting piece is arranged on a side of the indoor heat exchanger away from the air duct space.

[0009] In some embodiments, the first connecting end is threadedly connected with the water pan, and the second connecting end is snap-connected with the rear volute assembly.

[0010] Alternatively, the first connecting end is snap-connected with the water pan, and the second connecting end is threadedly connected with the rear volute assembly.

[0011] In some embodiments, the water pan comprises a guide portion, a connecting portion and a water receiving portion located on opposite sides of the guide portion, the guide portion is located below the indoor heat exchanger;

[0012] The connecting portion extends in a direction in which the guide portion faces outside of the indoor heat exchanger, and is connected with the first connecting end;

[0013] The water receiving portion extends in a direction in which the guide portion faces inside of the indoor heat exchanger, and is formed with a water receiving groove.

[0014] In some embodiments, the front volute assembly comprises a front volute wall, the front volute wall is connected with the water pan to jointly form at least part of inner walls of the heat exchange air duct;

[0015] The heat exchange air duct comprises an inlet air duct, an outlet air duct and a volute tongue located between the inlet air duct and the outlet air duct;

[0016] The water pan on the outside of the indoor heat exchanger is configured as at least part of inner walls of the inlet air duct, the water pan on the inside of the indoor heat exchanger is formed with an end portion, the end portion is configured as at least part of the volute tongue;

[0017] The front volute wall is connected with the end portion, and is configured as at least part of inner walls of the outlet air duct.

[0018] In some embodiments, an electric control box is further included, the front volute assembly has a receiving space, the receiving space is located on a side of the water pan away from the heat exchange air duct, and the electric control box is arranged in the receiving space;

[0019] The connecting position of the first connecting end and the water pan is located above the receiving space.

[0020] In some embodiments, the front volute assembly further comprises a front volute wall and a thermal insulation material, the front volute wall is connected with the water pan to jointly form at least part of inner walls of the heat exchange air duct;

[0021] The side of the water pan away from the heat exchange air duct and the side of the front volute wall away from the heat exchange air duct jointly enclose the receiving space;

[0022] The thermal insulation material is arranged on the side of the water pan away from the heat exchange air duct and / or the side of the front volute wall away from the heat exchange air duct, and covers an outer periphery of the electric control box.

[0023] In some embodiments, a first noise reduction cavity is formed between the front volute wall, the water pan and the thermal insulation material, and the first noise reduction cavity is communicated with the heat exchange air duct.

[0024] In some embodiments, a recess is formed on the surface of the connecting member.

[0025] In some embodiments, the recess is a groove formed on the connecting member, the groove being formed through the outer surface or the inner surface of the connecting member and extending along the length direction of the connecting member.

[0026] Alternatively, the recess is a hole formed on the connecting member, the hole being formed through the outer surface and the inner surface of the connecting member, and the number of the holes is plural, and the plural holes are arranged at intervals along the length direction of the connecting member.

[0027] In some embodiments, the air conditioner indoor unit further comprises an electric control box and a grounding wire, the front volute assembly further comprises a front volute wall, the water pan is fixed to the front volute wall, the electric control box is installed on the front volute wall and located in front of the indoor heat exchanger, and the electric control box comprises a grounding pin.

[0028] One end of the grounding wire is fixedly connected with the connecting member and electrically connected with the indoor heat exchanger, and the other end is connected with the grounding pin, so that the indoor heat exchanger is grounded through the grounding pin.

[0029] In some embodiments, a fan wheel is further arranged in the heat exchange air duct.

[0030] The indoor heat exchanger comprises a bending portion and first and second extension portions located on opposite sides of the bending portion, the bending portion is higher than the center of the fan wheel, and the bending portion has an included angle between a line connecting the bending portion and the center of the fan wheel and a horizontal line of the center of the fan wheel.

[0031] The connecting member comprises opposite first and second connecting segments, the first connecting segment extends downward along a tangent of the vertical direction of the bending portion and has an end formed as the first connecting end, and the second connecting segment extends along the extension paths of the bending portion and the second extension portion in sequence from a tangent point of the tangent of the vertical direction of the bending portion and has an end formed as the second connecting end.

[0032] In some embodiments, the connecting member is made of a metal conductive material, at least part of the structure of the connecting member is in conductive contact with the outer side surface of the indoor heat exchanger, and the grounding wire is in conductive contact with the indoor heat exchanger through the connecting member.

[0033] In some embodiments, an elastic pad is further arranged between the connecting member and the indoor heat exchanger, and the elastic pad is pressed against the outer side surface of the indoor heat exchanger by the connecting member.

[0034] In some embodiments, the connecting piece comprises a main body and a conductive part, the main body is made of non-conductive material, and the conductive part is in conductive contact with the indoor heat exchanger and the grounding wire.

[0035] In some embodiments, the conductive part is a conductive pad arranged between the indoor heat exchanger and the main body, and the conductive pad is pressed against the outer side of the indoor heat exchanger by the connecting piece.

[0036] Alternatively, the conductive part is a conductive coating applied to the surface of the main body facing the indoor heat exchanger.

[0037] In some embodiments, a fixing member is further provided, the grounding wire is provided with a first fixing hole, the connecting piece is provided with a second fixing hole, and the grounding wire and the connecting piece are fixedly connected through the cooperation of the first fixing hole and the second fixing hole.

[0038] In some embodiments, the connecting piece presses the grounding wire against the outer side of the indoor heat exchanger, so that the grounding wire is electrically connected to the indoor heat exchanger.

[0039] In some embodiments, the number of connecting pieces is multiple, and the multiple connecting pieces are arranged in the left-right direction of the indoor heat exchanger, and each connecting piece is electrically connected to the grounding pin through the grounding wire.

[0040] In some embodiments, the number of grounding wires is multiple, and the indoor heat exchanger comprises a metal edge plate on one side in the left-right direction, wherein the connecting piece closest to the metal edge plate is electrically connected to the grounding pin through the grounding wire, and the two adjacent connecting pieces are electrically connected through one grounding wire.

[0041] Alternatively, the number of grounding wires is multiple, wherein the multiple connecting pieces are electrically connected to the grounding pin through the multiple grounding wires, and one connecting piece is electrically connected to the grounding pin through one grounding wire.

[0042] In some embodiments, the connecting piece comprises a main body and a guide part arranged on the main body, the guide part forms a guide groove with an outlet, and the outlet faces upward.

[0043] Part of the wire body of the grounding wire is arranged in the guide groove, and the remaining part of the wire body is arranged behind the outlet and electrically connected to the grounding pin.

[0044] In some embodiments, the guide part comprises two oppositely arranged side plates and a bottom plate arranged between the two side plates, and the guide groove is formed between the two side plates and the bottom plate.

[0045] In some embodiments, the indoor heat exchanger comprises a first heat exchange portion and a second heat exchange portion arranged in the heat exchange air duct, and a gap is formed between the first heat exchange portion and the second heat exchange portion;

[0046] The connecting piece is arranged in the gap, and part of the structure extends along a side of the first heat exchange portion facing the rear volute assembly.

[0047] In some embodiments, a second noise reduction cavity is formed in the rear volute assembly and is communicated with the heat exchange air duct.

[0048] In a second aspect, the embodiments of the present application provide an air conditioner, which comprises the indoor unit of the air conditioner as described above.

[0049] Based on the indoor unit of the air conditioner and the air conditioner according to the embodiments of the present application, the first connecting end of the connecting piece is fixedly connected with the water pan, and the second connecting end is fixedly connected with the rear volute assembly. In actual use, when the water pan is deformed due to too much condensate water of the indoor heat exchanger, the connecting piece will apply a tension force to the water pan towards the indoor heat exchanger, so as to resist the trend that the distance between the water pan and the indoor heat exchanger becomes larger. In this way, the distance between the water pan and the indoor heat exchanger can be kept small, and the water pan is prevented from being deformed downward and separated from the indoor heat exchanger, so that the water pan can better receive the condensate water of the indoor heat exchanger, and the influence of the condensate water of the indoor heat exchanger of the air conditioner on the refrigeration and heat exchange of the air conditioner is avoided, and the refrigeration and heat exchange efficiency of the air conditioner is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0051] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the indoor unit of the air conditioner according to the present application;

[0052] Figure 2 FIG. 2 is a sectional view of the indoor unit of the air conditioner according to the present application; Figure 1

[0053] FIG. 3 is an exploded structural schematic diagram of the indoor unit of the air conditioner according to the present application; Figure 3 Figure 2 FIG. 4 is a sectional view of another embodiment of the indoor unit of the air conditioner according to the present application;

[0054] Figure 4 FIG. 5 is an exploded structural schematic diagram of another embodiment of the indoor unit of the air conditioner according to the present application.​

[0055] Figure 5 for Figure 2 A schematic diagram of the structure of a connecting component for an indoor unit of a central air conditioner;

[0056] Figure 6 for Figure 2 A schematic diagram of another embodiment of the connecting parts for an indoor air conditioning unit;

[0057] Figure 7 for Figure 1 Exploded view of the indoor unit of a central air conditioner;

[0058] Figure 8 for Figure 7 A magnified view of a section at point A in the middle;

[0059] Figure 9 This is a schematic diagram of the structure of another embodiment of the indoor unit of the air conditioner in this application;

[0060] Figure 10 This is a schematic diagram illustrating the connection of the connector and grounding wire of an air conditioner indoor unit according to an embodiment of this application;

[0061] Figure 11 This is a connection diagram of another embodiment of the connector and grounding wire of the air conditioner indoor unit of this application.

[0062] Explanation of icon numbers:

[0063] 100, air conditioner indoor unit; 10, casing; 10a, heat exchange air duct; 10b, air duct space; 10c, first noise reduction cavity; 10d, second noise reduction cavity; 10e, inlet air duct; 10f, outlet air duct; 10g, volute tongue; 11, front volute assembly; 111, front volute wall; 1111, volute main body; 1113, heat insulation material; 113, water pan; 1131, guide part; 1133, connecting part; 1135, water receiving part; 1135a, water receiving groove; 1136, end part; 13, rear volute assembly; 131, rear volute; 133, bottom plate; 20, panel assembly; 30, indoor heat exchanger; 30a, outer side; 30b, inner side; 31, first heat exchange part; 33, second heat exchange part; 34, bending part; 35, gap; 37, metal edge plate; 38, first extension part; 39, second extension part; 40, grounding wire; 41, fixing part; 50, connecting part; 50a, second fixing hole; 51, main part; 51a, groove; 51b, recess hole; 51c, recess part; 511, first connecting end; 513, second connecting end; 515, main section; 517, first avoiding section; 519, second avoiding section; 53, conductive part; 531, conductive pad; 55, guide part; 55a, guide groove; 55b, outlet; 551, side plate; 553, bottom plate; 56, first connecting section; 57, second connecting section; 60, fan wheel; 70, electric control box; 71, grounding pin; 80, elastic pad; 90, filter screen.

[0064] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application with reference to the accompanying drawings.

[0066] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0067] In the description of the present application, it is understood that the terms "first", "second" and the like are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific cases. In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated listed items.

[0069] In the related art, the front volute assembly of the air conditioner indoor unit is provided with a water pan, but due to the overall length of part of the air conditioner indoor unit being too long, the length of the water pan with the front volute assembly also needs to be lengthened, so it will cause the water pan to have poor strength itself, or the water pan to bear the weight of the condensate water from the indoor heat exchanger to be too heavy, under the influence of the above factors, it makes the water pan easy to deform when it receives the condensate water flowing out of the indoor heat exchanger, and then causes the distance between the water pan and the indoor heat exchanger to become larger, so that the water pan cannot better receive the condensate water flowing out of the indoor heat exchanger, affecting the formation of condensate water by the air conditioner indoor unit.

[0070] To solve the above problems, please refer to Figure 1 One aspect of the present application proposes an air conditioner, which comprises an air conditioner indoor unit 100 and an air conditioner outdoor unit (not shown in the figure), the air conditioner indoor unit 100 is installed in a target space and is used for adjusting the air of the target space, and the air conditioner outdoor unit is connected to the air conditioner indoor unit 100 through a pipeline.

[0071] In order to make the water pan 113 of the air conditioner indoor unit 100 better receive the condensate water flowing out of the indoor heat exchanger 30 during use of the air conditioner, another aspect of the present application proposes an air conditioner indoor unit 100, which comprises a casing 10, a panel assembly 20, an indoor heat exchanger 30, a connecting piece 50, a fan wheel 60, an electric control box 70 and a filter screen 90. The casing 10 is connected with the panel assembly 20 and constructs a containing space, and the indoor heat exchanger 30, the connecting piece 50, the fan wheel 60, the electric control box 70 and the filter screen 90 are all placed in the containing space.

[0072] The casing 10 comprises a front volute assembly 11 and a rear volute assembly 13, which cooperate to enclose a heat exchange air duct 10a, and the indoor heat exchanger 30 and the fan wheel 60 are arranged in the heat exchange air duct 10a, wherein the indoor heat exchanger 30 functions as a heat exchanger, and the fan wheel 60 functions as a flow transmission facilitator. The front volute assembly 11 comprises a front volute wall 111 and a water pan 113 fixed to the front volute wall 111, and the upper surface of the water pan 113 is recessed to form a water receiving groove 1135a, and the indoor heat exchanger 30 is arranged above the water pan 113, so that the condensed water flowing out of the indoor heat exchanger 30 can be received by the water receiving groove 1135a of the water pan 113. The rear volute assembly 13 comprises a bottom plate 133 and a rear volute 131 mounted to the bottom plate 133, and the front volute assembly 11 cooperates with the rear volute 131 to enclose the heat exchange air duct 10a. The front volute wall 111 comprises a volute main body 1111 and a thermal insulation material 1113 arranged between the volute main body 1111 and the water pan 113, that is, when the number of thermal insulation materials 1113 is one, the thermal insulation material 1113 can be arranged on the side of the water pan 113 away from the heat exchange air duct 10a, or on the side of the front volute wall 111 away from the heat exchange air duct 10a, and when the number of thermal insulation materials 1113 is two, the two thermal insulation materials 1113 can be arranged on the side of the water pan 113 away from the heat exchange air duct 10a and on the side of the front volute wall 111 away from the heat exchange air duct 10a, respectively, so as to prevent the energy generated by the air conditioner indoor unit 100 from being dissipated to the outside through the thermal insulation material 1113. The thermal insulation material 1113 can cover the outer periphery of the electric control box 70, and the thermal insulation material 1113 can be in the form of thermal insulation sponge or thermal insulation blanket, etc., without limitation. The front volute assembly 11 has a receiving space, that is, the side of the water pan 113 away from the heat exchange air duct 10a and the side of the front volute wall 111 away from the heat exchange air duct 10a together enclose the receiving space, and the receiving space is located on the side of the water pan 113 away from the heat exchange air duct 10a and is arranged for the electric control box 70, so that the electric control box 70 is also located in front of the indoor heat exchanger 30.

[0073] Further, the present application can form a first noise reduction cavity 10c between the front volute wall 111, the water pan 113 and the thermal insulation material 1113, and the first noise reduction cavity 10c is communicated with the heat exchange air duct 10a. Also, a second noise reduction cavity 10d communicated with the heat exchange air duct 10a can be formed in the rear volute assembly 13. Through the arrangement of the first noise reduction cavity 10c and the second noise reduction cavity 10d, the noise generated in the heat exchange air duct 10a can be reduced, so as to reduce the vibration noise caused by the rotation of the fan wheel 60 and the noise generated by the airflow fluctuation, so that the air conditioner indoor unit 100 can be more quiet during operation, and the user experience can be improved.

[0074] The filter screen 90 includes two opposite ends, one of which is connected to the water pan 113 of the front volute assembly 11, and the other is connected to the bottom plate 133 of the rear volute assembly 13, which can play a role in filtering external impurities when installed. In actual use, in order to facilitate the quick replacement of the filter screen 90, the connection of the filter screen 90 with the water pan 113 and the bottom plate 133 is set to be movable, which is convenient for disassembly and assembly, for example Figures 2-3 In the feasible scheme shown in the figure, the filter screen 90 is connected to the water pan 113 and the bottom plate 133 by clamping, but in this connection mode, the filter screen 90 itself does not exert a tension force on the water pan 113 towards the indoor heat exchanger 30, so it cannot resist the trend of the distance between the water pan 113 and the indoor heat exchanger 30 becoming larger through the connection of the two ends of the filter screen 90.

[0075] The connecting piece 50 is in the shape of an elongated strip, and its material can be metal, such as aluminum alloy or copper, or plastic, etc., which is not limited in the present application. The connecting piece 50 includes a first connecting end 511 and a second connecting end 513, the first connecting end 511 is connected to the water pan 113, and the second connecting end 513 is connected to the rear volute assembly 13. The present application Figure 2 and Figure 3 discloses that the second connecting end is connected to the rear volute 131 of the rear volute assembly 13, of course, in other embodiments, the second connecting end is connected to, for example, the bottom plate 133, or other components mounted on the rear volute assembly, as long as the water pan can provide a force to overcome the offset phenomenon, which is within the scope claimed by the present application. The following content is still in the form of the second connecting end 513 being fixedly connected to the rear volute 131 of the rear volute assembly 13, which further describes the situation that the water pan 113 of the air conditioner indoor unit 100 of the present application is not easily deformed by gravity.

[0076] In one structural form, the first connecting end 511 can be threadedly connected with the water tray 113, and the second connecting end 513 can be snap-connected with the rear volute assembly 13. In another structural form, the first connecting end 511 can be snap-connected with the water tray 113, and the second connecting end 513 can be threadedly connected with the rear volute assembly 13. In either of the above two structural forms, the connecting piece 50 always has one end threadedly connected with the water tray 113 or the rear volute 131 or the bottom plate 133 of the rear volute assembly 13, that is, the first connecting end 511 or the second connecting end 513 can achieve hard connection and rigid connection. The other end of the connecting piece 50 can be connected through snap connection. Compared with the first connecting end 511 and the second connecting end 513 being threadedly connected, or either of the first connecting end 511 or the second connecting end 513 being snap-connected, the snap connection with the buckle slot can facilitate installation and other operations, and the processing precision can be appropriately reduced during production, which is convenient for production and processing.

[0077] The connecting piece 50 is used to apply a tension force to the water tray 113 towards the indoor heat exchanger 30 to resist the trend of the distance between the water tray 113 and the indoor heat exchanger 30 becoming larger. That is, when the water tray 113 receives too much condensed water from the indoor heat exchanger 30 and is about to be deformed, the connecting piece 50 will apply a tension force to the water tray 113 towards the indoor heat exchanger 30 to prevent the distance between the water tray 113 and the indoor heat exchanger 30 from becoming larger. In this way, the water tray 113 can be pulled tight by the tension force generated by the connecting piece 50 to prevent it from deforming when it receives too much condensed water from the indoor heat exchanger 30.

[0078] In actual use, when the water tray 113 is deformed due to receiving too much condensed water from the indoor heat exchanger 30, the connecting piece 50 will apply a tension force to the water tray 113 towards the indoor heat exchanger 30 to resist the trend of the distance between the water tray 113 and the indoor heat exchanger 30 becoming larger. In this way, the distance between the water tray 113 and the indoor heat exchanger 30 can be kept small, preventing the water tray 113 from deforming downward and separating from the indoor heat exchanger 30, so that the water tray 113 can better receive the condensed water from the indoor heat exchanger 30, avoiding affecting the refrigeration and heat exchange of the indoor heat exchanger 30 of the air conditioner indoor unit 100, and ensuring the refrigeration and heat exchange efficiency of the air conditioner indoor unit 100.

[0079] Please refer to Figures 2-3In an embodiment, the indoor heat exchanger 30 and the front volute assembly 11 and the rear volute assembly 13 form a duct space 10b in the heat exchange duct 10a, and the connecting piece 50 is arranged on the side of the indoor heat exchanger 30 away from the duct space 10b. In this way, the space on the side of the indoor heat exchanger 30 away from the duct space 10b can be used to accommodate the connecting piece 50, that is, the space between the side of the indoor heat exchanger 30 away from the duct space 10b and the filter screen 90 can be used to accommodate the connecting piece 50. In this way, the space in the heat exchange duct 10a can be avoided, and the connecting piece 50 can be conveniently disassembled and assembled by the staff.

[0080] In order to further reduce the space occupation of the connecting piece 50 to the air conditioner indoor unit 100, part of the structure of the connecting piece 50 can extend along the side surface of the indoor heat exchanger 30 away from the rear volute assembly 13. The indoor heat exchanger 30 includes an outer side surface 30a and an inner side surface 30b arranged opposite to each other, the inner side surface 30b is closer to the rear volute 131 of the rear volute assembly 13 than the outer side surface 30a, and the outer side surface 30a is an arc surface protruding towards the connecting piece 50. At this time, the inner surface of part of the structure of the connecting piece 50 can match the shape of the outer surface of the indoor heat exchanger 30, and the two can be in a state of close fit. In this way, the space occupation of the connecting piece 50 to the air conditioner indoor unit 100 can be further reduced.

[0081] Please refer to Figure 4 In an embodiment, the indoor heat exchanger 30 includes a first heat exchange part 31 and a second heat exchange part 33 arranged in the heat exchange duct 10a, the first heat exchange part 31 and the second heat exchange part 33 can be arranged at an angle, and a gap 35 is formed between the first heat exchange part 31 and the second heat exchange part 33.

[0082] The connecting piece 50 is arranged in the gap 35, and part of the structure extends along the side of the first heat exchange part 31 facing the rear volute assembly 13. In this way, part of the structure of the connecting piece 50 extends in the heat exchange duct 10a (the side of the first heat exchange part 31 facing the rear volute assembly 13), and the other part of the structure extends on the side of the second heat exchange part 33 of the indoor heat exchanger 30 away from the rear volute assembly 13. In this way, the two spaces can be used to accommodate the connecting piece 50, and the part of the structure of the connecting piece 50 located in the heat exchange duct 10a (the side of the first heat exchange part 31 facing the rear volute assembly 13) can be hidden by the first heat exchange part 31. When the user faces the face frame assembly, the user cannot directly observe the structure of the connecting piece 50 in this part of the heat exchange duct 10a, and the appearance is better.

[0083] In order to make the condensed water flowing out of the indoor heat exchanger 30 flow to the water collecting groove 1135a better, in one structure, the water collecting tray 113 comprises a guide part 1131, a connecting part 1133 and a water collecting part 1135 located on opposite sides of the guide part 1131. The guide part 1131 is located below the indoor heat exchanger 30. The connecting part 1133 extends in the direction of the outer side of the indoor heat exchanger 30 and is connected with the first connecting end 511. The water collecting part 1135 extends in the direction of the inner side of the indoor heat exchanger 30 and forms the water collecting groove 1135a.

[0084] In this way, the guide part 1131 can be closer to the indoor heat exchanger 30, so that the condensed water generated by the indoor heat exchanger 30 can flow into the water collecting groove 1135a of the water collecting part 1135 under the guidance of the guide part 1131 to be collected by the water collecting groove 1135a. The side of the water collecting part 1135 away from the guide part 1131 further forms a front volute wall. In the presence of the front volute wall 111, the circulation of gas in the front volute wall 111 can be prevented, and the rotational noise generated by the fan wheel 60 can be reduced.

[0085] Further, the front volute wall 111 and the water collecting tray 113 are connected to form at least part of the inner wall of the heat exchange air duct 10a. The heat exchange air duct 10a comprises an inlet air duct 10e, an outlet air duct 10f and a volute tongue 10g located between the inlet air duct 10e and the outlet air duct 10f. The water collecting tray 113 is configured as at least part of the inner wall of the inlet air duct 10e on the outer side of the indoor heat exchanger 30. The water collecting tray 113 forms an end part 1136 on the inner side of the indoor heat exchanger 30. The end part 1136 constitutes at least part of the volute tongue 10g. The front volute wall 111 is connected with the end part 1136 and is configured as at least part of the inner wall of the outlet air duct 10f. It can be understood that the air flow generated by the air conditioner indoor unit 100 can flow to the outside after flowing through the inlet air duct 10e, the volute tongue 10g and the outlet air duct 10f in turn. The volute tongue 10g can guide the air flow from the inlet air duct 10e to the outlet air duct 10f to prevent the air flow from circulating in the heat exchange air duct 10b. In the presence of the first noise reduction cavity 10c, the air flow noise generated by the air flow impacting the volute tongue 10g can be reduced.

[0086] In order to improve the tensioning effect of the connecting piece 50 on the water pan 113 to the indoor heat exchanger 30, the first connecting end 511 is arranged above the receiving space. Since the electric control box 70 arranged in the receiving space has a heavy weight, the overall gravity center of the front volute assembly 11 with the electric control box 70 is close to the mounting position of the electric control box 70. The part of the connecting portion 1133 with the first connecting end 511 is arranged above the electric control box 70, which can shorten the distance between the position of the first connecting end 511 of the connecting piece 50 pulling the front volute wall 111 and the overall gravity center of the front volute assembly 11, so as to reduce the force couple generated by the tensioning force of the connecting piece 50 on the water pan 113 and the gravity of the front volute assembly 11 with the electric control box 70, and improve the tensioning effect of the connecting piece 50 on the water pan 113.

[0087] Please refer to Figures 5-6 In an embodiment, the connecting piece 50 is provided with a recess 51c on the surface thereof. The recess 51c can improve the elastic deformation ability of the connecting piece 50, and facilitate the installation of the connecting piece 50. When the part of the connecting piece 50 extends along the first heat exchange portion 31 of the heat exchanger to the side of the rear volute assembly 13, or the part of the connecting piece 50 extends along the side surface of the indoor heat exchanger 30 away from the rear volute assembly 13, the connecting piece 50 can be deformed and extended.

[0088] In a structure form, as shown in Figure 5 The connecting piece 50 is provided with a groove 51a penetrating the outer surface or the inner surface thereof, and the groove 51a extends along the length direction of the connecting piece 50. That is, the groove 51a is a long strip-shaped groove. The groove 51a can improve the elastic deformation ability of the connecting piece 50.

[0089] In another structure form, as shown in Figure 6 The connecting piece 50 is provided with a recess hole 51b penetrating the outer surface and the inner surface thereof. That is, the recess hole 51b is a through hole penetrating the outer surface and the inner surface of the connecting piece 50. The recess holes 51b are arranged in multiple numbers and are arranged in intervals along the length direction of the connecting piece 50. The multiple recess holes 51b can reduce the material of the connecting piece 50, and can also reduce the strength of the connecting piece 50. The number of the recess holes 51b can be two, three or four, and the like.

[0090] The positions of the groove 51a or the plurality of recess holes 51b can be positions corresponding to the side of the indoor heat exchanger 30 facing away from the rear volute assembly 13 or the side of the first heat exchange part 31 of the heat exchanger facing the rear volute assembly 13. In this way, the connecting piece 50 can be deformed better to fit the side of the indoor heat exchanger 30 facing away from the rear volute assembly 13 or the side of the first heat exchange part 31 of the heat exchanger facing the rear volute assembly 13 during extension.

[0091] To enable the first connecting end 511 and the second connecting end 513 of the connecting piece 50 to avoid the water pan 113 and the rear volute 131 of the rear volute assembly 13, respectively, when connecting the water pan 113 and the rear volute 131 of the rear volute assembly 13, the main body part 51 of the connecting piece 50 includes a main body section 515, a first avoiding section 517, and a second avoiding section 519. The first avoiding section 517 is connected to one end of the main body section 515, and the second avoiding section 519 is connected to the other end of the main body section 515. The end of the first avoiding section 517 forms the first connecting end 511, and the end of the second avoiding section 519 forms the second connecting end 513. The first avoiding section 517 and the second avoiding section 519 have a step difference with the main body section 515. When the first connecting end 511 and the second connecting end 513 are connected to the water pan 113 and the rear volute 131 of the rear volute assembly 13, respectively, the first avoiding section 517 and the second avoiding section 519 can avoid the water pan 113 and the rear volute 131 of the rear volute assembly 13, respectively, facilitating installation.

[0092] The above describes that the air conditioner indoor unit 100 of the present application has the advantage that the water pan 113 is less likely to deform, by the connecting piece 50 applying a tension force to the water pan 113 towards the indoor heat exchanger 30 to resist the trend of the distance between the water pan 113 and the indoor heat exchanger 30 increasing. To further enhance the grounding continuity of the indoor heat exchanger 30 and the electric control box 70, the air conditioner indoor unit 100 further includes the electric control box 70. The electric control box 70 is installed on the front volute wall 111 and located in front of the indoor heat exchanger 30. The electric control box 70 includes a grounding pin 71. The grounding pin 71 can be a grounding terminal or a pin on a grounding bar or a circuit board, without limitation.

[0093] The air conditioner indoor unit 100 further comprises a grounding wire 40, one end of which is fixedly connected with the connecting piece 50 and electrically connected with the indoor heat exchanger 30, and the other end is connected with the grounding pin 71, so that the indoor heat exchanger 30 is grounded through the grounding pin 71. In this way, the indoor heat exchanger 30 can be connected to the ground through the connecting piece 50, the grounding wire 40 and the grounding pin 71 of the electric control box 70, preventing the occurrence of electric leakage and ensuring the safety of electricity use. At the same time, under the condition that the grounding continuity of the indoor heat exchanger 30 and the electric control box 70 is good, the air conditioner indoor unit 100 can have a certain electromagnetic immunity, so as to ensure that the air conditioner indoor unit 100 can obtain the product EMC (Electro Magnetic Compatibility) certification, and the shielding performance of the air conditioner indoor unit 100 can be improved, so that the air conditioner indoor unit 100 can smoothly pass the radiation test and meet the product test requirements.

[0094] In an embodiment, please refer to Figures 2-4 The indoor heat exchanger 30 comprises a bending portion 34 and a first extension portion 38 and a second extension portion 39 located on opposite sides of the bending portion 34, the bending portion 34 is higher than the center of the fan wheel 60, and the bending portion 34 and the horizontal line passing through the center of the fan wheel 60 have an included angle.

[0095] The connecting piece 50 comprises opposite first and second connecting sections 56 and 57, the first connecting section 56 extends downward along the tangent of the vertical direction of the bending portion 34 and the end thereof is formed into a first connecting end 511, and the second connecting section 57 extends along the extension paths of the bending portion 34 and the second extension portion 39 from the tangent point of the tangent of the vertical direction of the bending portion 34 and the end thereof is formed into a second connecting end 513. It can be understood that part of the main section 515 and the first avoiding section 517 jointly constitute the first connecting section 56, and the remaining part of the main section 515 and the second avoiding section 519 jointly constitute the second connecting section 57. In this way, when the bending portion 34 and the horizontal line passing through the center of the fan wheel 60 have an included angle, and the second connecting section 57 extends, the second connecting section 57 will closely fit the bending portion 34 and the second extension portion 39, and the length of the fitting portion will be greater than half the length of the extension portion of the indoor heat exchanger 30, so as to improve the fitting area of the second connecting section 57 and the indoor heat exchanger 30, and further improve the conductive effect of the connecting piece 50 and the indoor heat exchanger 30.

[0096] Further, the connecting piece 50 can press the grounding wire 40 against the outer side 30a of the indoor heat exchanger 30, so that the grounding wire 40 is electrically connected with the indoor heat exchanger 30. In this way, the grounding wire 40 can be more stably pressed by the connecting piece 50 and the outer side 30a of the indoor heat exchanger 30, ensuring the stability of the wire and making the wire more simple and beautiful.

[0097] In the exemplary scheme shown in the figure, referring to Figure 9 The number of the connecting pieces 50 is set to be multiple, and the multiple connecting pieces 50 are arranged at intervals along the left-right direction of the indoor heat exchanger 30. In this way, the multiple connecting pieces 50 can be used to increase the tension force applied to the water receiving plate 113 towards the indoor heat exchanger 30, better resist the trend of increasing distance between the water receiving plate 113 and the indoor heat exchanger 30, and further prevent the water receiving plate 113 from deforming. Each connecting piece 50 is electrically connected with the grounding pin 71 through the grounding wire 40. In this way, the number of grounding paths of the indoor heat exchanger 30 can be increased by electrically connecting the multiple connecting pieces 50 with the grounding pin 71 of the electric control box 70, so as to increase the stability of grounding of the indoor heat exchanger 30 and further improve the grounding continuity of the indoor heat exchanger 30 and the electric control box 70. Specifically, the number of the connecting pieces 50 can be two, three, four or the like, and is not limited.

[0098] In one structure, the number of the grounding wires 40 is multiple, and the indoor heat exchanger 30 includes a metal side plate 37 located on one side in the left-right direction of the indoor heat exchanger 30. The connecting piece 50 closest to the metal side plate 37 (i.e., the connecting piece 50 closer to the electric control box 70) is electrically connected with the grounding pin 71 through the grounding wire 40, and the adjacent two connecting pieces 50 are electrically connected through one grounding wire 40. In this way, the distance of the grounding path between the grounding wire 40 and the grounding pin 71 of the electric control box 70 can be shortened, and the reliability of grounding can be improved, so as to improve the electrical safety.

[0099] Further, the metal side plate 37 and the connecting piece 50 closest to the metal side plate 37 can be electrically connected through one grounding wire 40. In this way, the number of grounding paths can be further increased, and the metal side plate 37 can be grounded through the grounding pin 71, preventing the metal side plate 37 from leaking electricity when it is wet, and improving the electrical safety.

[0100] In another structure, the number of the grounding wires 40 is multiple, wherein the multiple connectors 50 are electrically connected to the grounding pin 71 through the multiple grounding wires 40, and one connector 50 is electrically connected to the grounding pin 71 through one grounding wire 40. In this way, the stability of grounding can be ensured through the multiple grounding wires 40, even if one of the grounding wires 40 fails, the remaining grounding wires 40 can still continuously achieve grounding, further improving the stability, while increasing the number of paths for grounding the indoor heat exchanger 30. It should be noted that the number of the grounding pin 71 can be one or multiple, when the number is one, the multiple grounding wires 40 can be connected to one grounding pin 71 to achieve electrical connection, and when the number is multiple, the number of the grounding wires 40 will correspond to the number of the grounding pin 71 to achieve electrical connection, which is not limited.

[0101] Please refer to Figures 7-10 The connector 50 includes a main body 51, a guide portion 55, and a conductive portion 53, the guide portion 55 is arranged on the main body 51, and the conductive portion 53 is connected to the main body 51.

[0102] The guide portion 55 forms a guide groove 55a with an outlet 55b, and the outlet 55b faces upward, part of the wire body of the grounding wire 40 is arranged in the guide groove 55a, and the remaining wire body is arranged in the outlet 55b and electrically connected to the grounding pin 71. In this way, when part of the wire body of the grounding wire 40 is guided by the outlet 55b of the guide groove 55a, it can first extend upward and then extend downward into the control box 70 and be electrically connected to the grounding pin 71 of the control box 70. In this way, even if the grounding wire 40 is contaminated with condensate water from the indoor heat exchanger 30, the condensate water will fall under the influence of its own gravity when the grounding wire 40 first extends upward, which can prevent the condensate water from entering the control box 70 with the grounding wire 40, ensuring the safety of electricity use.

[0103] The guide portion 55 includes two opposite side plates 551 and a bottom plate 553 arranged between the two side plates 551, and the guide groove 55a is formed between the two side plates 551 and the bottom plate 553. In this way, by blocking the bottom plate 553 and the two side plates 551, the worker can be guided to draw the grounding wire 40 from the outlet 55b when wiring, achieving the effect of guiding the worker to wire the grounding wire 40. Of course, the guide portion 55 can also be directly stamped on the main body 51 to form a guide portion 55 with a guide groove 55a, which is convenient for processing and production and reduces the assembly steps.

[0104] Please refer to Figures 8-10, in order to realize that the grounding wire 40 can be in conductive contact with the indoor heat exchanger 30 through the connecting piece 50, the connecting piece 50 can specifically include but is not limited to the following two forms:

[0105] Form one, the connecting piece 50 is a metal conductive material. Specifically, the connecting piece 50 can be a metal piece or a plastic copper-plated piece. In this form, at least part of the structure of the connecting piece 50 is in conductive contact with the outer side 30a of the indoor heat exchanger 30, and the grounding wire 40 is in conductive contact with the indoor heat exchanger 30 through the connecting piece 50.

[0106] And on the basis of the connecting piece 50 being a metal conductive material, in order to avoid the connecting piece 50 causing scratches and other damage to the outer side 30a of the indoor heat exchanger 30, please continue to refer to Figure 10 , the present application can be that an elastic pad 80 is further arranged between the connecting piece 50 and the indoor heat exchanger 30, and the elastic pad 80 is pressed by the connecting piece 50 on the outer side 30a of the indoor heat exchanger 30. In this way, the protection of the outer side 30a of the indoor heat exchanger 30 can be realized through the elastic pad 80, and when the air conditioner indoor unit 100 vibrates, the elastic deformation of the elastic pad 80 can also reduce the impact of the connecting piece 50 on the indoor heat exchanger 30. Specifically, the elastic pad 80 can be a conductive sponge or a conductive rubber, which is not limited.

[0107] Form two, the connecting piece 50 includes a main body part 51 and a conductive part 53 connected to each other, the main body part 51 is a non-conductive material, and the conductive part 53 is in conductive contact with the indoor heat exchanger 30 and in conductive contact with the grounding wire 40. It can be understood that the main body part 51 can be a plastic material, which makes the overall weight of the connecting piece 50 lighter, and the main body part 51 of the connecting piece 50 made of plastic material will not rust and other conditions occur after long-term use. The conductive part 53 can be a metal conductive material, and in this form, the grounding wire 40 can be in conductive contact with the indoor heat exchanger 30 through the conductive part 53 of the connecting piece 50.

[0108] And in this form, please refer to Figure 11The conductive part 53 can be a conductive pad 531 arranged between the indoor heat exchanger 30 and the main body part 51, and the conductive pad 531 is pressed against the outer side surface 30a of the indoor heat exchanger 30 by the connecting piece 50. In this way, the conductive contact of the grounding wire 40 and the conductive pad 531 of the connecting piece 50 can be realized through the conductive contact of the conductive pad 531 and the indoor heat exchanger 30, and the conductive pad 531 can not only play a conductive effect, but also protect the outer side surface 30a of the indoor heat exchanger 30, and when the air conditioner indoor unit 100 vibrates, the impact of the main body part 51 of the connecting piece 50 on the indoor heat exchanger 30 can be reduced through the elastic deformation of the conductive pad 531. Specifically, the conductive pad 531 can be a conductive sponge or a conductive rubber, which is not limited.

[0109] The conductive part 53 can also be a conductive coating applied to the surface of the main body part 51 facing the indoor heat exchanger 30. The conductive coating can be applied to the main body part 51 by spraying, printing, brushing, etc. In this way, the conductive contact of the grounding wire 40 and the conductive coating of the connecting piece 50 can be realized through the conductive contact of the conductive coating and the indoor heat exchanger 30.

[0110] In order to enable the grounding wire 40 to be in conductive contact with the indoor heat exchanger 30 through the connecting piece 50, the grounding wire 40 can be in conductive contact with the connecting piece 50 through a metal sheet, or in conductive contact with the conductive part 53 of the connecting piece 50, which is not limited in the present application.

[0111] In this way, the indoor heat exchanger 30 can be connected to the ground through the grounding wire 40 and the grounding pin 71 of the electric control box 70, preventing the occurrence of electric leakage and ensuring the safety of electricity use, while improving the grounding continuity of the indoor heat exchanger 30 and the electric control box 70.

[0112] Further, in order to enable the grounding wire 40 and the connecting piece 50 to be fixedly connected, the air conditioner indoor unit 100 of the present application further comprises a fixing piece 41, the grounding wire 40 is provided with a first fixing hole, the connecting piece 50 is provided with a second fixing hole 50a, and the grounding wire 40 and the connecting piece 50 are fixedly connected through the cooperation of the fixing piece 41 and the first fixing hole and the second fixing hole. Specifically, the fixing piece 41 can be a threaded part, and the first fixing hole and the second fixing hole 50a can be threaded holes, and the threaded connection of the first fixing hole and the second fixing hole 50a through the fixing piece 41 can realize the threaded fixed connection of the grounding wire 40 and the connecting piece 50.

[0113] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0114] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing includes a front volute assembly and a rear volute assembly, which cooperate to form a heat exchange air duct, and the front volute assembly includes a water receiving tray. An indoor heat exchanger is installed inside the heat exchange duct and located above the water receiving tray; as well as The connector includes a first connecting end and a second connecting end, wherein the first connecting end is connected to the water receiving tray and the second connecting end is connected to the rear volute assembly. The indoor unit of the air conditioner also includes an electrical control box and a grounding wire. The electrical control box includes a grounding pin. One end of the grounding wire is connected to the connector and electrically connected to the indoor heat exchanger, and the other end is connected to the grounding pin, so that the indoor heat exchanger can be grounded via the connector, the grounding wire and the grounding pin of the electrical control box.

2. The air conditioner indoor unit as described in claim 1, characterized in that, The indoor heat exchanger, the front volute assembly, and the rear volute assembly form a duct space, which is located within the heat exchange duct. The connector is disposed on the side of the indoor heat exchanger opposite to the duct space.

3. The air conditioner indoor unit as described in claim 1, characterized in that, The first connecting end is threadedly connected to the water receiving tray, and the second connecting end is snap-fitted to the rear volute assembly; Alternatively, the first connecting end is snapped into the water receiving tray, and the second connecting end is threaded into the rear volute assembly.

4. The air conditioner indoor unit as described in claim 1, characterized in that, The water receiving tray includes a guide portion and connecting portions and water receiving portions located on opposite sides of the guide portion, the guide portion being located below the indoor heat exchanger; The connecting portion extends in the direction of the guide portion toward the outside of the indoor heat exchanger and is connected to the first connecting end; The water receiving part extends in the direction of the guide part toward the inside of the indoor heat exchanger and forms a water receiving groove.

5. The air conditioner indoor unit as described in claim 1, characterized in that, The front volute assembly includes a front volute wall, which is connected to the water receiving tray to form at least a portion of the inner wall of the heat exchange duct. The heat exchange air duct includes an inlet air duct, an outlet air duct, and a volute located between the inlet air duct and the outlet air duct; The water receiving tray is configured on the outside of the indoor heat exchanger as at least a portion of the inner wall of the inlet air duct, and the water receiving tray has an end formed on the inside of the indoor heat exchanger, the end forming at least a portion of the volute tongue; The front volute wall is connected to the end and is configured as at least a portion of the inner wall of the outlet air duct.

6. The air conditioner indoor unit as described in claim 1, characterized in that, It also includes an electrical control box, the front volute assembly having a receiving space located on the side of the water receiving tray away from the heat exchange air duct, and for housing the electrical control box; The first connection end is located above the water receiving tray.

7. The air conditioner indoor unit as described in claim 6, characterized in that, The front volute assembly further includes a front volute wall and a heat insulation material, wherein the front volute wall is connected to the water receiving tray to form at least a portion of the inner wall of the heat exchange duct. The side of the water receiving tray away from the heat exchange air duct and the side of the front volute wall away from the heat exchange air duct together form the receiving space. The insulation material is disposed on the side of the water receiving pan away from the heat exchange duct and / or on the side of the front volute wall away from the heat exchange duct, and covers the outer periphery of the electrical control box.

8. The air conditioner indoor unit as described in claim 7, characterized in that, A first noise reduction cavity is formed between the front volute wall, the water receiving tray, and the insulation material, and the first noise reduction cavity is connected to the heat exchange air duct.

9. The indoor unit of the air conditioner as described in claim 1, characterized in that, The surface of the connector is provided with a recess.

10. The air conditioner indoor unit as described in claim 9, characterized in that, The recess is a groove formed in the connector, the groove is provided through the outer surface or inner surface of the connector, and extends along the length direction of the connector; Alternatively, the recess is a recessed hole formed in the connector, the recessed hole is provided through the outer surface and inner surface of the connector, and there are multiple recessed holes, which are arranged at intervals along the length direction of the connector.

11. The air conditioning indoor unit as described in any one of claims 1 to 10, characterized in that, The front volute assembly also includes a front volute wall, the water receiving tray is fixed to the front volute wall, and the electrical control box is installed on the front volute wall and located in front of the indoor heat exchanger.

12. The air conditioner indoor unit as described in claim 11, characterized in that, It also includes a fan wheel, which is disposed inside the heat exchange duct; The indoor heat exchanger includes a bent portion and a first extension and a second extension located on opposite sides of the bent portion. The bent portion is higher than the center of the impeller, and there is an angle between the line connecting the bent portion and the center of the impeller and the horizontal line passing through the center of the impeller. The connector includes a first connecting segment and a second connecting segment. The first connecting segment extends downward along the tangent in the vertical direction of the bend and its end is formed as the first connecting end. The second connecting segment extends from the point of tangency of the tangent in the vertical direction of the bend along the extension paths of the bend and the second extension and its end is formed as the second connecting end.

13. The air conditioner indoor unit as described in claim 11, characterized in that, The connector is made of conductive metal, and at least a portion of the connector is in conductive contact with the outer surface of the indoor heat exchanger. The grounding wire is in conductive contact with the indoor heat exchanger through the connector.

14. The air conditioner indoor unit as described in claim 13, characterized in that, An elastic pad is also provided between the connector and the indoor heat exchanger, and the elastic pad is pressed against the outer side of the indoor heat exchanger by the connector.

15. The indoor unit of the air conditioner as described in claim 11, characterized in that, The connector includes a main body and a conductive part connected to each other. The main body is made of a non-conductive material, and the conductive part makes conductive contact with the indoor heat exchanger and the grounding wire.

16. The air conditioner indoor unit as described in claim 15, characterized in that, The conductive part is a conductive pad disposed between the indoor heat exchanger and the main body, and the conductive pad is pressed against the outer side of the indoor heat exchanger by the connector. Alternatively, the conductive part is a conductive coating applied to the surface of the main body facing the indoor heat exchanger.

17. The indoor unit of the air conditioner as described in claim 11, characterized in that, It also includes a fixing component, wherein the grounding wire is provided with a first fixing hole and the connector is provided with a second fixing hole, and the grounding wire and the connector are fixedly connected by the fixing component cooperating with the first fixing hole and the second fixing hole.

18. The indoor unit of the air conditioner as described in claim 11, characterized in that, The connector presses the grounding wire against the outer side of the indoor heat exchanger to make the grounding wire electrically connected to the indoor heat exchanger.

19. The indoor unit of the air conditioner as described in claim 11, characterized in that, The number of connectors is multiple, and the multiple connectors are arranged at intervals along the left and right direction of the indoor heat exchanger. Each connector is electrically connected to the grounding pin through the grounding wire.

20. The indoor unit of the air conditioner as described in claim 19, characterized in that, The number of grounding wires is multiple, and the indoor heat exchanger includes a metal side plate located on one side in the left-right direction, wherein the connector closest to the metal side plate is electrically connected to the grounding pin through the grounding wire, and two adjacent connectors are electrically connected through one of the grounding wires. Alternatively, there may be multiple grounding wires, wherein multiple connectors are electrically connected to the grounding pins via multiple grounding wires, and one connector is electrically connected to the grounding pin via one grounding wire.

21. The air conditioner indoor unit as described in claim 11, characterized in that, The connector includes a main body and a guide portion disposed on the main body, the guide portion forming a guide groove having an outlet facing upward; Part of the grounding conductor is placed inside the guide groove, and the remaining part of the conductor passes through the outlet and is electrically connected to the grounding pin.

22. The air conditioner indoor unit as described in claim 21, characterized in that, The guide portion includes two oppositely arranged side plates and a bottom plate disposed between the two side plates, with the two side plates and the bottom plate forming the guide groove.

23. The air conditioner indoor unit as described in claim 1, characterized in that, The indoor heat exchanger includes a first heat exchange section and a second heat exchange section disposed in the heat exchange duct, and a gap is formed between the first heat exchange section and the second heat exchange section. The connector passes through the gap, and a portion of the structure extends along the side of the first heat exchange section facing the rear volute assembly.

24. The air conditioner indoor unit as described in claim 1, characterized in that, A second noise reduction cavity is formed within the rear volute assembly and is connected to the heat exchange duct.

25. An air conditioner, characterized in that, Including the air conditioning indoor unit as described in any one of claims 1 to 24.

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