CN219199472U

CN219199472U - Air conditioner indoor unit base structure, air conditioner indoor unit and cabinet air conditioner

Info

Publication number: CN219199472U
Application number: CN202223435307.3U
Authority: CN
Inventors: 卢华侨; 潘龙腾; 陈红光; 张瀚中; 武文凯; 周兴勇
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-16
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to a base structure of an indoor unit of an air conditioner, an indoor unit of the air conditioner and a cabinet air conditioner, wherein the base structure comprises a front base and a rear base; the front base and the rear base are respectively of sheet metal structures; the front base and the rear base can be connected with each other and wrap the air duct component; the air duct component is arranged in the base structure, and an air duct is formed in the air duct component; according to the scheme provided by the utility model, the base structure of the indoor unit of the air conditioner consists of the front base and the rear base, wherein the front base and the rear base are formed by adopting the sheet metal structures, so that the reliability and the stability of the base part of the indoor unit can be effectively improved, the number of parts can be reduced while the strength design requirement is met, the assembly efficiency is improved, and the die opening cost of a die is reduced.

Description

Air conditioner indoor unit base structure, air conditioner indoor unit and cabinet air conditioner

Technical Field

The utility model relates to the technical field of base structures of indoor units of air conditioners, in particular to a base structure of an indoor unit of an air conditioner, an indoor unit of the air conditioner and a cabinet air conditioner.

Background

The existing upper and lower air outlet cabinet air conditioner base parts are mostly assembled by injection molding parts, or injection molding parts and sheet metal parts, or injection molding parts and foam parts, and the like, so that the design of the structural mode has large playing space, is easier to meet the design requirement, but has higher cost and more complex structure; the base part is used as a main stress part of the air conditioner with the upper and lower air outlet cabinets, raw materials with better comprehensive performance are required to be adopted for injection molding, so that the material cost is higher, and injection molding parts are required to be adopted for injection molding with larger material thickness, so that the overall cost is further increased; meanwhile, the number of parts of the base part of the indoor unit of the air conditioner formed by injection molding is large, the mold opening cost is high, and the heat preservation effect cannot be guaranteed.

Disclosure of Invention

The utility model aims to solve the technical problems of complex structure, high cost and poor stability of the base of the indoor unit of the existing air conditioner.

The utility model aims to design a base structure of an indoor unit of an air conditioner, which comprises a front base and a rear base; the front base and the rear base are respectively of sheet metal structures; the front base and the rear base can be connected with each other and wrap the air duct component; the air duct component is arranged in the base structure, and an air duct is formed in the air duct component.

In some embodiments, the front base and the rear base are respectively concave structures, and the front base flanges are respectively arranged on two sides of the front base, and the rear base flanges are respectively arranged on two sides of the rear base; the front base is respectively connected with the rear base flanges at the two sides of the rear base through the front base flanges at the two sides of the front base; the front base and the rear base are respectively provided with a reinforcing structure.

In some embodiments, a boss is convexly arranged on the front surface of the front base, and the boss is used for installing the electrical box; an air duct air port is also formed in the front surface of the front base and is communicated with the air duct; the bottom of the front base is provided with a folding edge, the folding edge is provided with a connecting hole, and the front base can be installed on a chassis of the air conditioner indoor unit through the folding edge.

In some embodiments, the front chassis cuff includes a first cuff, a second cuff, and a third cuff; the side edge of the front base is bent to form a first bending edge, one side of the first bending edge is bent to form a second bending edge, and one side of the second bending edge is bent to form a third bending edge; and/or, the first bending edge is provided with a transverse or longitudinal front base reinforcing rib; and/or an angle rib is arranged between the first bending edge and the second bending edge, and a reinforcing rib strip is arranged on the second bending edge; and/or an angle rib is arranged between the second bending edge and the third bending edge, and a reinforcing rib strip is arranged on the third bending edge.

In some embodiments, the reinforcing structure includes a convex hull and a rear base reinforcing rib, the convex hull disposed on a front face of the rear base, the rear base reinforcing rib disposed on the front face of the rear base or the rear base rim, respectively.

In some embodiments, the front base flange is provided with a bulge, the rear base flange is provided with a clamping groove, and the front base flange is clamped in the clamping groove of the rear base flange through the bulge; or the front base flanging is provided with a clamping groove, the rear base flanging is provided with a bulge, and the rear base flanging is clamped in the clamping groove of the front base flanging through the bulge; the front base flange and the rear base flange are connected together through welding or riveting or screws.

In some embodiments, the air duct assembly includes a front air duct housing and a rear air duct housing, the front air duct housing and the rear air duct housing being foam pieces, respectively; the front air duct shell is arranged in the front base, and a front air duct structure is formed in the front air duct shell; the rear air duct shell is arranged in the rear base, and a rear air duct structure is formed in the rear air duct shell; the front air duct shell and the rear air duct shell are butted together, and the front air duct structure and the rear air duct structure are butted to form an air duct.

In some embodiments, the front base is an integrally formed structure or is formed by connecting a plurality of sheet metal parts; the rear base is of an integrated structure; the front base and the rear base are connected together through welding or riveting or screws.

The utility model also provides an air conditioner indoor unit, which comprises a base structure, an evaporator and an air duct component, wherein the base structure is the air conditioner indoor unit base structure; the base structure is fixedly arranged in the indoor unit and is positioned on the chassis; the front base is arranged between the chassis and the air duct component and supports the air duct component; the rear base is arranged between the chassis and the evaporator and supports the evaporator; the air duct in the air duct assembly is also in communication with the air duct of the air duct component.

The utility model also provides a cabinet air conditioner, which comprises an indoor unit, wherein the indoor unit is the air conditioner indoor unit.

According to the scheme provided by the utility model, the base structure of the indoor unit of the air conditioner consists of the front base and the rear base, wherein the front base and the rear base are formed by adopting the sheet metal structures, so that the reliability and the stability of the base part of the indoor unit can be effectively improved, the number of parts can be reduced while the strength design requirement is met, the assembly efficiency is improved, and the die opening cost of a die is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic view of a base structure of an indoor unit of an air conditioner according to the prior art;

fig. 2 is a schematic view illustrating a base structure of an indoor unit of an air conditioner according to an exemplary embodiment of the present utility model;

fig. 3 is an exploded view showing a base structure of an indoor unit of an air conditioner according to an exemplary embodiment of the present utility model;

fig. 4 is a schematic view illustrating a base structure of an indoor unit of an air conditioner according to an exemplary embodiment of the present utility model;

FIG. 5 is a front view of a front chassis shown according to an exemplary embodiment of the present utility model;

FIG. 6 is a perspective view of a front chassis shown in accordance with an exemplary embodiment of the present utility model;

FIG. 7 is a second perspective view of the front base shown in accordance with an exemplary embodiment of the present utility model;

FIG. 8 is a perspective view of a rear chassis shown according to an exemplary embodiment of the present utility model;

FIG. 9 is a schematic view of a front chassis and rear chassis positioning structure shown according to an exemplary embodiment of the present utility model;

fig. 10 is a schematic view showing the screw assembly structure of the front chassis and the rear chassis according to an exemplary embodiment of the present utility model.

In the figure: 1. a front base; 11. flanging the front base; 111. a first bending edge; 112. a second crimping edge; 113. a third crimp; 12. a boss; 13. front base reinforcing ribs; 14. a mounting plate; 15. a protrusion; 16. screw holes; 2. a rear base; 21. flanging the rear base; 22. convex hulls; 23. folding edges; 24. reinforcing ribs of the rear base; 25. a clamping groove; 26. a screw post; 3. a front air duct housing; 4. a rear duct housing; 5. an air duct; 6. an air duct air port; 7. an electrical box.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 2 to 3, the present utility model provides a base structure of an indoor unit of an air conditioner, which can be installed in the indoor unit of the air conditioner to support an evaporator and an air duct member; specifically, the base structure comprises a front base 1 and a rear base 2; the front base 1 and the rear base 2 are respectively of sheet metal structures, the sheet metal structures can meet design requirements, meanwhile, the number of parts is reduced, the assembly efficiency is improved, the die opening cost of a die is reduced, and the economic benefit is improved; specifically, the front base 1 and the rear base 2 are subjected to structural deformation control design and structural stress reinforcement design, so that the stability and the stress capability of the front base 1 and the rear base 2 are improved, and the stability of the whole machine is improved; specifically, the front base 1 and the rear base 2 can be connected with each other and wrap the air duct assembly, so that the functions of support and protection are achieved; specifically, the air duct assembly is arranged in the base structure, and an air duct 5 is formed in the air duct assembly; according to the base structure of the indoor unit of the air conditioner, the reliability and stability of the inner bottom component of the indoor unit are improved by supporting and stressing through the sheet metal structures of the front base and the rear base 2, and the inner air duct structure is wrapped and protected through the assembly of the sheet metal structures of the front base and the rear base 2.

Preferably, in combination with the above solution, as shown in fig. 2 to 8, the front base 1 and the rear base 2 are respectively concave structures, and can be mutually buckled and connected to form a protection cavity; further, front base flanges 11 are respectively arranged on two sides of the front base 1, and rear base flanges 21 are respectively arranged on two sides of the rear base 2; specifically, the front base 1 is respectively connected with the rear base flanges 21 on two sides of the rear base 2 through the front base flanges 11 on two sides of the front base, so as to realize fixed connection, thereby wrapping the air duct assembly; further, the front base 1 and the rear base 2 are respectively provided with a reinforcing structure, so that the strength design is realized; specifically, the front base 1 is a main stressed part of the whole base and mainly bears the gravity above the air duct component machine, the tensile force of the air inlet component, the deformation torsion of the rear base 2 and the like, and the design requirements of strength, compression resistance and tensile resistance are high; the main plane lacing wire of the sheet metal structure of the front base 1 is reinforced, so that the anti-buckling deformation capacity and the strength of the main plane lacing wire are improved; meanwhile, corner ribs are designed at the bending edges or corners of the front base 1, and convex hull structures are designed at the bending edges, so that the deformation resistance of the metal plate is improved, and the tensile resistance and the compressive resistance of the metal plate are improved; further, the two sides of the front base 1 are respectively folded to form a front base flanging 11, and edge folding reinforcement is performed, so that when sheet metal raw materials with small material thickness are used, the tensile capacity of the sheet metal part is improved, and the deformation of the sheet metal part after forming is reduced; furthermore, the rear base 2 mainly bears the gravity of the evaporator component, the stress of the rear base is smaller than that of the front base 1, and the stress direction is simpler, so that the rear base is simpler in structure, transverse or transverse reinforcing ribs are designed on the plane of the rear base, and corner ribs are designed on the bending edges to control the deformation of the metal plate; further, positioning is carried out between the front base 1 and the rear base 2 through a designed positioning structure, and the front base and the rear base are assembled and connected through one or more pairs of screws; by adopting the scheme, the whole base structure is formed by connecting the front base 1 and the rear base 2 through two sheet metal structures, so that the structure is simple, reliable, stable and safe, the sheet metal structure is accurately reinforced, the sheet metal structure is subjected to the largest simplified design, unnecessary process waste is avoided, and the production efficiency is improved.

Preferably, in combination with the above-mentioned scheme, as shown in fig. 4 to 8, the base structure is used as an important stress part in the indoor unit, and plays a key role in reliability and stability of the whole indoor unit, so that the front sheet metal structure needs to be reinforced; specifically, a boss 12 is provided on the front surface of the front base 1 in a protruding manner, and the boss 12 is used for mounting the electrical box 7; specifically, as shown in fig. 4, the boss 12 is used for being matched with the electric box 7 and the fireproof cover of the electric box to form a drop structure, so that failure of electric elements caused by the flowing of condensation water into the electric box parts can be effectively prevented, and meanwhile, when the electric elements are accidentally ignited, flames can be prevented from jumping out of the electric box parts to cause the ignition of the whole machine; further, an air duct air port 6 is further formed in the front face of the front base 1, and the air duct air port 6 is communicated with the air duct 5 to realize ventilation; further, a flange 23 is formed at the bottom of the front chassis 1 in such a way that a connection hole is provided on the flange 23; specifically, the front base 1 can be mounted on the chassis of the indoor unit of the air conditioner through the folded edge 23 in a screw connection or welding manner.

Preferably, in combination with the above, as shown in fig. 6 to 8, the front chassis cuff 11 includes a first cuff 111, a second cuff 112, and a third cuff 113; wherein, the side edge of the front base 1 is bent to form a first bending edge 111, one side of the first bending edge 111 is bent to form a second bending edge 112, and further, one side of the second bending edge 112 is bent to form a third bending edge 113; further, the front sheet metal structure is reinforced and designed specifically including: the first bending edge 111 is provided with a front base reinforcing rib 13 in a transverse or longitudinal direction; further, an angle rib is arranged between the first bending edge 111 and the second bending edge 112, and a reinforcing rib strip is arranged on the second bending edge 112; further, an angle rib is arranged between the second bending edge 112 and the third bending edge 113, and a reinforcing rib strip is arranged on the third bending edge 113; by adopting the structural optimization design, the rebound deformation can be controlled, and meanwhile, the tensile, compressive and impact resistance of the front base 1 are required to be enhanced, so that the bending edge of the front base 1 is required to be enhanced as much as possible, and the use reliability and stability of the front base 1 are improved; further, corner ribs or reinforcing ribs are designed at the corners of the first bending edge 111, so that the rebound deformation of the bending edge is controlled, and the compression resistance and tensile deformation capacity of the bending edge are improved; longitudinal or transverse and longitudinal reinforcing ribs are designed on the first bending edge 111, so that the stress capacity of the side edges is enhanced; further, corner ribs or reinforcing ribs are also designed at the corners of the second folded edge 112 for reinforcement, and the second folded edge 112 can provide supporting connection for the assembly of the front base 1 and the rear base 2, so that the stress capability of the front base 1 and the rear base 2 can be enhanced through the assembly surface between the front base 1 and the rear base 2; the corner of the third bending edge 113 can be judged and designed according to the actual design structural space, and corner ribs, reinforcing ribs and overlapping edges can be designed for reinforcement or constraint reinforcement can be carried out through the assembly mode among parts; furthermore, the upper end and the lower end of the air duct of the front base 1 are respectively provided with a folded edge to bear the gravity above the air duct component and transmit the gravity to the chassis component, and corner ribs are arranged at the folded corners of the folded edge to strengthen the air duct component, so that the stress capability of the air duct component is improved, the size of the corner ribs and the size of the reinforcing ribs are required to be set according to the thickness of the adopted sheet metal material and the feasibility of the process, and the design and production requirements are met.

Preferably, in combination with the above, as shown in FIG. 8, the reinforcing structure includes a convex hull 22 and rear base reinforcing ribs 24; specifically, the convex hull 22 has a rectangular structure and is disposed on the front surface of the rear base 2, so as to improve the strength of the front surface of the rear base 2; further, the rear base reinforcing ribs 24 are respectively arranged on the front surface of the rear base 2 or the rear base flanging 21, so that the overall strength of the rear base 2 is improved; specifically, the rear base 2 may be designed by a single part, or may be assembled by a plurality of sheet metal parts, and its specific mode is determined according to structural arrangement, cost scheme, assembly mode, etc. of the parts; because the sheet metal structure stress direction of the rear base 2 is simpler, the sheet metal structure mainly bears the gravity above the evaporator component, the reinforcing structure mainly designs the convex hulls 22 and the rear base reinforcing ribs 24 which are longitudinally or transversely designed, and the corner bending corner is designed with a corner rib structure, so that the rebound deformation of the sheet metal component is prevented, and the tensile capacity of the whole component is reinforced.

Preferably, in combination with the above-mentioned solutions, as shown in fig. 2 to 10, the connection between the front chassis 1 and the rear chassis 2 is also positioned by designing a positioning structure; further, the positioning structure can be a positioning connection of the clamping groove and the bulge; specifically, the front base flange 11 is provided with a bulge 15, the rear base flange 21 is provided with a clamping groove 25, and the front base flange 11 is clamped in the clamping groove 25 of the rear base flange 21 through the bulge 15; or, the front base flange 11 is provided with a clamping groove 25, the rear base flange 21 is provided with a bulge 15, and the rear base flange 21 is clamped in the clamping groove 25 of the front base flange 11 through the bulge 15; the front base flange 11 and the rear base flange 21 are connected together by welding or riveting or screws; specifically, the front base 1 and the rear base 2 are in contact fit with each other through a metal plate surface, the front base 1 is used as a reference to assemble and restrict the rear base 2, a positioning structure is designed on the assembling surface of the front base 1 and the rear base 2 to limit, and the positioning structure can limit through a design buckle and a chute structure or a design hole and a bulge and other structures; the fixing mode of the front base 1 and the rear base 2 can be fixed by adopting modes of screw connection, welding, riveting and the like, preferably screws are adopted, screw holes are formed in the assembling surfaces of the two sides of the front base 1 and the rear base 2, and the fixing is carried out through screw connection, so that the maintenance and the repair of later-stage base components are convenient.

Preferably, in combination with the above-mentioned scheme, as shown in fig. 2 to 3, the air duct assembly includes a front air duct housing 3 and a rear air duct housing 4, specifically, the front air duct housing 3 and the rear air duct housing 4 are foam pieces, so that an air duct structure can be effectively formed, the supporting weight is reduced, and the air duct assembly has a heat insulation function; specifically, the front air duct housing 3 is disposed in the front base 1, and a front air duct structure is formed in the front air duct housing 3; further, the rear air duct housing 4 is arranged in the rear base 2, and a rear air duct structure is formed in the rear air duct housing 4; the front air duct housing 3 and the rear air duct housing 4 are butted together, and the front air duct structure and the rear air duct structure are butted to form an air duct 5.

Preferably, in combination with the above-mentioned scheme, as shown in fig. 2 to 8, the front base 1 is an integrally formed structure or is formed by connecting a plurality of sheet metal parts; the rear base 2 is of an integrated structure; the front base 1 and the rear base 2 are connected together by welding or riveting or screws.

Correspondingly, in combination with the above scheme, as shown in fig. 2 to 8, the utility model also provides an indoor unit of an air conditioner, which comprises a base structure, an evaporator and an air duct component, wherein the base structure is the base structure of the indoor unit of the air conditioner; the base structure is fixedly arranged in the indoor unit and is positioned on the chassis; the front base 1 is arranged between the chassis and the air duct component and supports the air duct component; the rear base 2 is arranged between the chassis and the evaporator and supports the evaporator; the air duct 5 in the air duct assembly is also in communication with the air duct of the air duct component.

Correspondingly, in combination with the above scheme, as shown in fig. 2 to 8, the utility model also provides a cabinet air conditioner, which comprises an indoor unit, and specifically, the indoor unit is the air conditioner indoor unit.

It is further understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. The base structure of the indoor unit of the air conditioner is characterized by comprising a front base (1) and a rear base (2); the front base (1) and the rear base (2) are respectively of sheet metal structures; the front base (1) and the rear base (2) can be connected with each other and wrap the air duct component; the air duct assembly is arranged in the base structure, and an air duct (5) is formed in the air duct assembly.

2. The indoor unit base structure of claim 1, wherein the front base (1) and the rear base (2) are respectively concave structures, front base flanges (11) are respectively arranged on two sides of the front base (1), and rear base flanges (21) are respectively arranged on two sides of the rear base (2); the front base (1) is respectively connected with rear base flanges (21) on two sides of the rear base (2) through front base flanges (11) on two sides of the front base; reinforcing structures are respectively arranged on the front base (1) and the rear base (2).

3. The base structure of the indoor unit of the air conditioner according to claim 1, wherein a boss (12) is protruded on the front surface of the front base (1), and the boss (12) is used for installing an electrical box (7); an air duct air port (6) is further formed in the front face of the front base (1), and the air duct air port (6) is communicated with the air duct (5); the bottom of the front base (1) is provided with a folded edge (23), the folded edge (23) is provided with a connecting hole, and the front base (1) can be installed on a chassis of an indoor unit of an air conditioner through the folded edge (23).

4. The base structure of an air conditioner indoor unit of claim 2, wherein the front base flange (11) includes a first flange (111), a second flange (112), and a third flange (113); the side edge of the front base (1) is bent to form the first bending edge (111), one side of the first bending edge (111) is bent to form the second bending edge (112), and one side of the second bending edge (112) is bent to form the third bending edge (113); and/or the number of the groups of groups,

the first bending edge (111) is provided with a front base reinforcing rib (13) in a transverse or longitudinal direction; and/or the number of the groups of groups,

an angle rib is arranged between the first bending edge (111) and the second bending edge (112), and a reinforcing rib strip is arranged on the second bending edge (112); and/or the number of the groups of groups,

an angle rib is arranged between the second bending edge (112) and the third bending edge (113), and a reinforcing rib strip is arranged on the third bending edge (113).

5. The indoor unit base structure according to claim 2, wherein the reinforcement structure includes a convex hull (22) and a rear base reinforcement rib (24), the convex hull (22) is disposed on the front surface of the rear base (2), and the rear base reinforcement rib (24) is disposed on the front surface of the rear base (2) or the rear base flange (21), respectively.

6. The base structure of the indoor unit of the air conditioner according to claim 2, characterized in that a bulge (15) is arranged on the front base flange (11), a clamping groove (25) is arranged on the rear base flange (21), and the front base flange (11) is clamped in the clamping groove (25) of the rear base flange (21) through the bulge (15); or alternatively, the process may be performed,

the front base flanging (11) is provided with a clamping groove (25), the rear base flanging (21) is provided with a bulge (15), and the rear base flanging (21) is clamped in the clamping groove (25) of the front base flanging (11) through the bulge (15);

the front base flange (11) and the rear base flange (21) are connected together through welding or riveting or screws.

7. The indoor unit base structure of claim 1, wherein the duct assembly includes a front duct housing (3) and a rear duct housing (4), the front duct housing (3) and the rear duct housing (4) being foam pieces, respectively; the front air duct shell (3) is arranged in the front base (1), and a front air duct structure is formed in the front air duct shell (3); the rear air duct shell (4) is arranged in the rear base (2), and a rear air duct structure is formed in the rear air duct shell (4); the front air duct shell (3) is in butt joint with the rear air duct shell (4), and the front air duct structure is in butt joint with the rear air duct structure to form the air duct (5).

8. The base structure of an indoor unit of an air conditioner according to claim 1, wherein the front base (1) is an integrally formed structure or is formed by connecting a plurality of sheet metal parts; the rear base (2) is of an integrated structure; the front base (1) and the rear base (2) are connected together through welding or riveting or screws.

9. An indoor unit of an air conditioner, comprising a base structure, an evaporator and an air duct component, wherein the base structure is the indoor unit base structure of an air conditioner according to any one of claims 1 to 8; the base structure is fixedly arranged in the indoor unit and is positioned on the chassis; the front base (1) is arranged between the chassis and the air duct component and supports the air duct component; the rear base (2) is arranged between the chassis and the evaporator and supports the evaporator; an air duct (5) in the air duct assembly is also in communication with the air duct of the air duct component.

10. A cabinet air conditioner comprising an indoor unit, wherein the indoor unit is the air conditioner indoor unit according to claim 9.