Dish assembly of air conditioner indoor unit, air conditioner indoor unit and air conditioner

Abstract

This utility model discloses a chassis assembly for an air conditioner indoor unit, an air conditioner indoor unit, and an air conditioner. The chassis assembly includes a chassis and a first extension member. The chassis has a first mounting portion corresponding to the air duct, which is used to mount a heat exchanger. The first extension member is fixed at one end of the chassis in the width direction and extends along the length direction of the chassis. The first extension member is located at the air inlet end of the air duct and protrudes from the chassis in the width direction, so that the chassis is suitable for a limiting fit with the frame of the air conditioner indoor unit through the first extension member. Therefore, the width of the chassis assembly can be increased by the first extension member, providing more space for the arrangement of the heat exchanger. It eliminates the need to re-mold and adjust the chassis dimensions, allowing for the adaptation of larger heat exchangers and reducing the manufacturing cost of the chassis assembly.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a chassis assembly for an air conditioning indoor unit, an air conditioning indoor unit, and an air conditioner. Background Technology

[0002] Currently, the chassis of an air conditioner indoor unit is usually only compatible with one size of heat exchanger. If a larger heat exchanger is required, the chassis needs to be re-molded to fit the size of the heat exchanger, which increases the manufacturing cost of the air conditioner indoor unit. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a chassis assembly for an air conditioner indoor unit, an air conditioner indoor unit, and an air conditioner. The width of the chassis assembly can be increased by the first extension member, providing more space for the arrangement of the heat exchanger. It can accommodate larger heat exchangers without re-molding and adjusting the dimensions of the chassis, thus reducing the manufacturing cost of the chassis assembly.

[0004] According to a first aspect embodiment of the present invention, an air conditioner indoor unit chassis assembly includes: a chassis and a first extension member. The chassis has a first mounting portion corresponding to the air duct, the first mounting portion being used to mount a heat exchanger. The first extension member is fixed at one end of the chassis in the width direction and extends along the length direction of the chassis. The first extension member is located at the air inlet end of the air duct and protrudes from the chassis in the width direction of the chassis, so that the chassis is adapted to be matched with the frame of the air conditioner indoor unit by means of the first extension member.

[0005] According to an embodiment of the present invention, the chassis assembly of the indoor unit of an air conditioner has a first extension member protruding from the chassis in the width direction, so that the width of the chassis assembly is greater than the width of the chassis. By fixing the first extension member to one end in the width direction of the chassis, the first extension member can increase the width of the chassis assembly, providing more space for the arrangement of the heat exchanger. It can accommodate larger heat exchangers without re-molding and adjusting the dimensions of the chassis, thus reducing the manufacturing cost of the chassis assembly.

[0006] In some embodiments, the chassis has a first limiting structure, the first extension has a second limiting structure and a third limiting structure, the second limiting structure is matched with the first limiting structure, and the third limiting structure is adapted to match with a fourth limiting structure on the faceplate.

[0007] In some embodiments, the third limiting structure is opposite to the first limiting structure along the width direction of the chassis.

[0008] In some embodiments, the first limiting structure includes a first limiting protrusion and a third limiting hole, the second limiting structure includes a first limiting hole that engages with the first limiting protrusion and a third limiting protrusion that engages with the third limiting hole, and the third limiting structure includes a second limiting protrusion and a fourth limiting hole. The chassis assembly is configured to satisfy at least one of the following structures: the first limiting protrusion and the third limiting hole are located on different sides of the chassis; the first limiting protrusion and the third limiting hole are spaced apart along the length direction of the chassis; there are multiple first limiting protrusions spaced apart along the length direction of the chassis; there are multiple third limiting holes spaced apart along the length direction of the chassis.

[0009] In some embodiments, the first limiting structure includes a first limiting protrusion, which is a plurality of protrusions and all protrudes along the width direction of the chassis. The second limiting structure includes a first limiting hole that limits and engages with the first limiting protrusion. The first limiting hole is configured as a first insertion hole. The first limiting protrusion on the chassis is adapted to be inserted into the first insertion hole along the width direction of the chassis and to limit and engage with the first insertion hole along the length direction of the chassis. And / or, the first limiting hole is configured as a second insertion hole, which includes a first hole portion and a second hole portion. The second hole portion is connected to one side of the first hole portion along the length direction of the chassis. In the thickness direction of the chassis, the size of the first hole portion is larger than the size of the second hole portion. The first limiting protrusion on the chassis is adapted to be inserted into the first hole portion along the thickness direction of the chassis and to limit and engage with the second hole portion along the length direction of the chassis.

[0010] In some embodiments, the first limiting structure further includes a third limiting hole, all of which are configured as second insertion holes. In the length direction of the chassis, the width of the third limiting protrusion is smaller than the width of the third limiting hole. The first extension is configured to slide and install from a first preset position to a second preset position along the length direction of the chassis. In the first preset position, the first hole portion is inserted into the first limiting protrusion on the chassis, and the third limiting protrusion is inserted into the third limiting hole on the chassis. In the second preset position, the second hole portion is inserted into the first limiting protrusion, and the third limiting protrusion is still inserted into the third limiting hole.

[0011] In some embodiments, the side of the first extension member facing away from the chassis is formed as a first support surface, the first support surface is adapted to abut against the face frame, the first extension member also has at least one rib portion, the rib portion is spaced apart on the side of the first support surface facing the chassis, and is adapted to abut against the air inlet filter of the indoor unit of the air conditioner; and / or, the first extension member has a connecting portion, the connecting portion is provided with a threaded fastener, the threaded fastener is provided in a connecting hole on the connecting portion in a direction perpendicular to the length direction of the chassis, and is threaded to the chassis, at least one connecting hole has a notch on its periphery, the notch penetrates the hole wall of the connecting hole and the outer periphery of the connecting portion.

[0012] In some embodiments, the first extension member corresponds to the air duct and includes an extension body and a reinforcing rib. The extension body has a groove, and the groove opening is disposed opposite to the air duct in the thickness direction of the chassis. The reinforcing rib is disposed in the groove and is supported and connected between the two sidewalls of the groove in the width direction of the chassis. There are multiple reinforcing ribs, which are spaced apart along the length direction of the chassis.

[0013] In some embodiments, a reinforcing rib is connected to the bottom wall of the groove facing the air duct, and the reinforcing rib is integrally connected to the expansion body. A first groove is formed on the side of the bottom wall of the groove facing the air duct. The first groove extends along the width direction of the chassis and is located at the connection position between the bottom wall of the groove and the reinforcing rib.

[0014] In some embodiments, the extension body is a single piece, and the two sidewalls of the groove in the width direction of the chassis are respectively the first groove sidewall and the second groove sidewall. The first groove sidewall abuts against the chassis. The bottom wall of the groove connects the first groove sidewall and the second groove sidewall and extends beyond the first groove sidewall in a direction away from the second groove sidewall. A second groove is formed on the side of the bottom wall of the groove facing the air duct. The second groove extends along the length direction of the chassis and is located at the connection position between the bottom wall of the groove and the first groove sidewall.

[0015] In some embodiments, a first limiting hole is formed on one side of the groove adjacent to the chassis, which is recessed away from the chassis. The first limiting hole is engaged with a first limiting protrusion on the chassis. A second limiting protrusion is formed on one side of the groove away from the chassis. The second limiting protrusion is provided corresponding to the first limiting protrusion and is adapted to be engaged with a second limiting hole on the face frame. And / or, a third limiting protrusion is formed on one side of the groove adjacent to the chassis, which is engaged with a third limiting hole on the chassis. A fourth limiting hole is formed on the bottom wall of the groove, which is adapted to be engaged with a fourth limiting protrusion on the face frame.

[0016] In some embodiments, the length direction of the chassis is the left-right direction, the width direction of the chassis is the up-down direction, and the extension structure is located at the upper end of the chassis.

[0017] In some embodiments, the chassis has a first part and a second part, the first part corresponding to an air duct, the second part being connected to one end of the length of the first part and located outside the air duct, a first extension member being fixed to the first part, and the chassis assembly further including a second extension member being fixed to the second part, and the second extension member and the first extension member being located at the same end of the chassis, the second extension member protruding from the chassis in the width direction of the chassis so that the chassis is adapted to engage with the faceplate by means of the second extension member.

[0018] In some embodiments, the side of the first extension member facing away from the chassis is formed as a first support surface, and the side of the second extension member facing away from the chassis is formed as a second support surface. The first support surface and the second support surface are flush and both are adapted to abut against the face frame.

[0019] In some embodiments, the first extension member and the second extension member are spaced apart, or the first extension member and the second extension member are integrally connected.

[0020] In some embodiments, the first extension member and the second extension member are spaced apart and both are slidably mounted on the chassis. The two extension members slide in different directions, and the first extension member and the second extension member each have a stop portion that abuts against the chassis along the corresponding sliding direction.

[0021] In some embodiments, the first extension member extends in a long strip along the length direction of the chassis and is slidably installed along the length direction of the chassis, with the stop portion of the first extension member located at its end away from the second extension member; and / or, the second extension member extends in a long strip along the width direction of the chassis and is slidably installed along the width direction of the chassis, with the stop portion of the second extension member located at its length end and opposite to the first extension member.

[0022] An indoor air conditioning unit according to a second aspect of the present invention includes: a front frame and a heat exchanger assembly. The heat exchanger assembly includes a heat exchanger and a chassis assembly of the indoor air conditioning unit according to a first aspect of the present invention. The heat exchanger is disposed in an air duct. A side of a first extension member facing away from the chassis forms a first support surface, which is adapted to abut against the front frame. An end face of one end of the chassis in the width direction forms a mating surface, which abuts against the first extension member. In the width direction of the chassis, the corresponding edges of the heat exchanger are spaced between the first support surface and the mating surface. The front frame covers the heat exchanger assembly and is limited to fit the first extension member.

[0023] According to the embodiment of the present utility model, the air conditioner indoor unit has a chassis with an external first extension member, which provides more space for the arrangement of the heat exchanger. It is not necessary to re-mold the chassis to adapt to the size of the heat exchanger, so as to reduce the manufacturing cost of the chassis assembly. Therefore, the use of this chassis assembly can reduce the manufacturing cost of the air conditioner indoor unit.

[0024] An air conditioner according to a third aspect of the present invention includes an indoor unit according to a second aspect of the present invention.

[0025] According to the embodiments of the present invention, the use of the above-described indoor unit can reduce the manufacturing cost of the air conditioner.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of a chassis assembly according to an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 Enlarged view of point A circled in the image;

[0030] Figure 3 yes Figure 1 Another schematic diagram of the chassis components shown;

[0031] Figure 4 This is a schematic diagram of an air conditioner according to an embodiment of the present invention;

[0032] Figure 5 yes Figure 4 Enlarged view of point B circled in the image;

[0033] Figure 6 yes Figure 1 A schematic diagram of the chassis assembly with the first extension removed;

[0034] Figure 7 yes Figure 1 A schematic diagram of the chassis assembly shown without the first extension and the base plate;

[0035] Figure 8 yes Figure 1 A schematic diagram of the chassis shown;

[0036] Figure 9 This is an assembly diagram of the extended structure and face frame according to an embodiment of the present utility model;

[0037] Figure 10 yes Figure 9 Another assembly diagram of the extended structure and faceplate shown;

[0038] Figure 11 yes Figure 10 Enlarged view of point C circled in the image;

[0039] Figure 12 yes Figure 10 Another assembly diagram of the extended structure and faceplate shown;

[0040] Figure 13 This is a schematic diagram of the first extension component according to an embodiment of the present utility model;

[0041] Figure 14 yes Figure 13Enlarged view of point D circled in the image;

[0042] Figure 15 yes Figure 13 Another schematic diagram of the first extension shown;

[0043] Figure 16 yes Figure 15 Enlarged view of point E circled in the image;

[0044] Figure 17 yes Figure 13 Another schematic diagram of the first extension shown;

[0045] Figure 18 yes Figure 13 Another schematic diagram of the first extension shown;

[0046] Figure 19 yes Figure 13 Another schematic diagram of the first extension shown;

[0047] Figure 20 yes Figure 13 Another schematic diagram of the first extension shown;

[0048] Figure 21 yes Figure 20 Enlarged view of point F circled in the image;

[0049] Figure 22 This is a schematic diagram of a second extension component according to an embodiment of the present utility model;

[0050] Figure 23 yes Figure 22 Another schematic diagram of the second extension shown;

[0051] Figure 24 yes Figure 1 Another schematic diagram of the chassis components shown;

[0052] Figure 25 This is a schematic diagram of a heat exchanger assembly according to an embodiment of the present invention;

[0053] Figure 26 yes Figure 25 Enlarged view of point G circled in the image;

[0054] Figure 27 yes Figure 26 Another schematic diagram of the heat exchanger assembly shown.

[0055] Figure label:

[0056] Chassis assembly 100, heat exchanger assembly 200, air conditioner indoor unit 300,

[0057] Chassis 1, First mounting part 11, First section 12, Second section 13, First limiting protrusion 14, Third limiting hole 15, Second mounting part 16, First mounting platform 161, Second mounting platform 162, Mating surface 17.

[0058] Extension structure 2, first limiting hole 21, second insertion hole 212, first hole portion 2121, second hole portion 2122, support surface 22, second limiting protrusion 23, third limiting protrusion 24, rib portion 25, connecting portion 26, notch 261, extension body 27, groove 271, first groove 2711, second groove 2712, first groove sidewall 2713, second groove sidewall 2714, reinforcing rib 28, opening 281, first extension piece 29, first support surface 291, second extension piece 30, second support surface 301, stop portion 31, fourth limiting hole 32, fifth limiting protrusion 33, first limiting structure 34, second limiting structure 35, third limiting structure 36, fourth limiting structure 37.

[0059] Heat exchanger 3, air duct 4, air inlet 41, face frame 5, second limiting hole 51, fourth limiting protrusion 52, base plate 6. Detailed Implementation

[0060] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0061] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0062] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0063] Hereinafter, with reference to the accompanying drawings, a chassis assembly 100 of an air conditioner indoor unit 300 according to an embodiment of the present invention will be described. The chassis assembly 100 participates in defining an air duct 4 for mounting a heat exchanger 3 of the air conditioner indoor unit 300.

[0064] Please refer to Figures 1-5 The chassis assembly 100 includes a chassis 1 and a first extension member 29. The chassis 1 has a first mounting portion 11 corresponding to the portion of the air duct 4. The first mounting portion 11 is used to install the heat exchanger 3. The first extension member 29 is fixed at one end of the chassis 1 in the width direction and extends along the length direction of the chassis 1. The first extension member 29 is located at the air inlet end 41 of the air duct 4, and the first extension member 29 protrudes from the chassis 1 in the width direction so that the width of the chassis assembly 100 is greater than the width of the chassis 1 in the width direction, so that the chassis 1 is suitable for limiting and cooperating with the face frame 5 of the air conditioner indoor unit 300 through the first extension member 29. That is, the end of the chassis 1 with the first extension member 29 can be limited and cooperated with the face frame 5 through the first extension member 29.

[0065] As can be seen, by extending the first extension member 29 along the length direction of the chassis 1, the dimensions of the first extension member 29 and the first mounting part 11 can be better matched in the length direction of the chassis 1, so that the dimensions of the first extension member 29 and the heat exchanger 3 installed in the first mounting part 11 can be better matched. When the chassis assembly 100 is used for the air conditioner indoor unit 300, it is convenient for the first extension member 29 to separate the aforementioned end of the chassis 1 in the width direction (i.e. the end where the first extension member 29 is located) from the face frame 5, so that the chassis 1 can be indirectly connected to the face frame 5 through the first extension member 29.

[0066] The first extension member 29 protrudes from the chassis 1 in the width direction, which facilitates the chassis assembly 100 to be wider than the chassis 1. This allows the first extension member 29 to increase the width of the chassis assembly 100, providing more space for the arrangement of the heat exchanger 3. This eliminates the need to re-mold and adjust the dimensions of the chassis 1, thus adapting to larger heat exchangers 3 and reducing the manufacturing cost of the chassis assembly 100. At the same time, the chassis 1 can be mated with the face frame 5 through the first extension member 29. In this case, only the face frame 5 needs to be re-molded and its corresponding dimensions adjusted. There is no need to make too many changes to the structure of the face frame 5 to achieve the assembly of the face frame 5 and the chassis assembly 100. Moreover, the structure on the face frame 5 is usually minimal, so even if the face frame 5 is re-molded, it will not excessively increase the manufacturing cost of the air conditioning indoor unit 300.

[0067] In related technologies, the chassis of an air conditioner indoor unit is usually only compatible with one size of heat exchanger. If a larger heat exchanger is to be used, the larger heat exchanger has a greater width, which can easily interfere with the assembly between the chassis and the front frame. This requires a larger chassis and front frame, so the chassis and front frame need to be remolded to fit the size of the heat exchanger. The chassis has many structures, and remolding the chassis will excessively increase the manufacturing cost of the air conditioner indoor unit.

[0068] According to the embodiments of this application, the chassis assembly 100 is fixed to one end of the chassis 1 in the width direction by the first extension member 29. The first extension member 29 can increase the width of the chassis assembly 100, providing more space for the arrangement of the heat exchanger 3. It is not necessary to re-mold the chassis 1 and adjust the size of the chassis 1 to accommodate a larger model of heat exchanger 3, which is conducive to reducing the manufacturing cost of the chassis assembly 100. At this time, it is only necessary to re-mold the face frame 5 and adjust the corresponding size of the face frame 5. Moreover, the structure on the face frame 5 is usually less, and re-mold the face frame 5 will not excessively increase the manufacturing cost, which is conducive to reducing the manufacturing cost of the air conditioner indoor unit 300.

[0069] In addition, the first extension member 29 is located at the air inlet end 41 of the air duct 4 so that the first extension member 29 does not easily affect the air outlet of the air duct 4, which is conducive to improving the reliability of the chassis assembly 100. Moreover, the structure of the chassis 1 corresponding to the air outlet end of the air duct 4 is usually more complex. For example, the air outlet end of the air duct 4 generally needs to be equipped with an air outlet frame and air guide structure that cooperate with the chassis 1, while the structure of the chassis 1 corresponding to the air inlet end 41 of the air duct 4 is relatively simple, which is conducive to simplifying the structure of the first extension member 29.

[0070] In this application description, the length direction of the chassis 1 is perpendicular to its width direction, and both the length direction and the width direction of the chassis 1 are perpendicular to the thickness direction of the chassis 1. For example, the chassis assembly 100 is applied to a wall-mounted air conditioner. The length direction of the chassis 1 is left-right, the width direction is up-down, and the thickness direction is front-back. The air inlet of the wall-mounted air conditioner is typically located at its top, and the air outlet is typically located at its bottom or front. The first extension member 29 is located at the upper end of the chassis 1 so that the first extension member 29 can be closer to the air inlet of the wall-mounted air conditioner. The first extension member 29 is less likely to affect the air outlet of the wall-mounted air conditioner, thus improving the reliability of the chassis assembly 100. Of course, if the air inlet is located at the bottom of the air conditioner, the first extension member 29 is located at the lower end of the chassis 1.

[0071] It is understandable that the chassis 1 may only be limited to the face frame 5 by the first extension member 29; or, the chassis 1 may not only be limited to the face frame 5 by the first extension member 29, but also by other structures. As an example, the chassis assembly 100 includes an extension structure 2, which includes a first extension member 29 and a second extension member 30. The chassis 1 has a first part 12 and a second part 13. The first part 12 is provided corresponding to the air duct 4. The second part 13 is connected to one end of the length of the first part 12 and is located outside the air duct 4. The first extension member 29 extends along the length direction of the chassis 1 and is fixed to the first part 12. The second extension member 30 extends along the width direction of the chassis 1 and is fixed to the second part 13. The chassis 1 can be limited to the face frame 5 by the first extension member 29 and the second extension member 30.

[0072] Please refer to Figure 1 and Figure 2 In some embodiments, the chassis 1 has a first limiting structure 34, and the first extension member 29 has a second limiting structure 35 and a third limiting structure 36. The second limiting structure 35 engages with the first limiting structure 34 to prevent relative displacement between the first extension member 29 and the chassis 1, resulting in a more stable fit. The third limiting structure 36 is adapted to engage with a fourth limiting structure 37 on the face frame 5 to prevent relative displacement between the first extension member 29 and the face frame 5, resulting in a more stable fit. Therefore, the chassis 1 can indirectly engage with the face frame 5 through the first extension member 29, and the chassis assembly 100 is less prone to relative displacement after engaging with the face frame 5, thus improving the reliability of the chassis assembly 100.

[0073] Please refer to Figure 1 and Figure 2In some embodiments, the third limiting structure 36 and the first limiting structure 34 are opposite each other along the width direction of the chassis 1. When the chassis 1 is engaged with the face frame 5 via the first extension member 29, it is not necessary to make significant changes to the setting position of the fourth limiting structure 37 on the face frame 5. Only the corresponding dimensions of the face frame 5 need to be adjusted, which reduces the mold opening cost of the face frame 5 and thus reduces the manufacturing cost of the air conditioner indoor unit 300. In other words, by setting the first extension member 29, and setting the third limiting structure 36 on the first extension member 29 opposite to the first limiting structure 34 on the chassis 1, the third limiting structure 36 is used to replace the first limiting structure 34 in engaging with the fourth limiting structure 37. This way, the position of the fourth limiting structure 37 on the face frame 5 does not need to be significantly changed. Only the corresponding dimensions of the face frame 5 need to be adjusted. There is no need to rearrange the structure on the face frame 5, which reduces the design cost and mold opening cost of the face frame 5. Furthermore, by replacing the first limiting structure 34 with the fourth limiting structure 37 using the third limiting structure 36, the structures of the first limiting structure 34 and the third limiting structure 36 can be made more similar, which helps to reduce the design cost of the first extension member 29.

[0074] Furthermore, the first limiting structure 34 includes a first limiting protrusion 14 and a third limiting hole 15, and the third limiting structure 36 includes a second limiting protrusion 23 and a fourth limiting hole 32. At this time, the number of the first limiting protrusion 14 and the third limiting protrusion 24 can be equal or unequal, and this application does not limit this. If the first limiting structure 34 and the third limiting structure 36 correspond to each other along the width direction of the chassis 1, then there are multiple first limiting protrusions 14 and multiple second limiting protrusions 23, and the multiple first limiting protrusions 14 and multiple second limiting protrusions 23 correspond one-to-one. Each first limiting protrusion 14 and the corresponding second limiting protrusion 23 are opposite to each other along the width direction of the chassis 1.

[0075] Of course, in other embodiments of this application, the first limiting structure 34 may also be configured to include the first limiting protrusion 14 but not include the third limiting hole 15, or to include the third limiting hole 15 but not include the first limiting protrusion 14.

[0076] Please refer to Figures 1-24In some embodiments, the first limiting structure 34 includes a first limiting protrusion 14 and a third limiting hole 15; the second limiting structure 35 includes a first limiting hole 21 that engages with the first limiting protrusion 14 and a third limiting protrusion 24 that engages with the third limiting hole 25; and the third limiting structure 36 includes a second limiting protrusion 23 and a fourth limiting hole 32. It is evident that by providing the limiting protrusion and the limiting hole, the assembly of the chassis 1 and the first extension 29 can be simplified, as can the assembly of the first extension 29 and the face frame 5, thereby improving assembly efficiency. Furthermore, the chassis 1 can engage with the first extension 29 not only through the first limiting protrusion 14 but also through the third limiting hole 15, enabling multi-point engagement between the chassis 1 and the first extension 29, thus improving the reliability of the assembly of the chassis 1 and the first extension 29.

[0077] The chassis assembly 100 is configured to satisfy at least one of the following structures A1 to A4:

[0078] In structure A1, the first limiting protrusion 14 and the third limiting hole 15 are located on different sides of the chassis 1. When the first limiting structure 34 and the second limiting structure 35 are engaged, the first limiting protrusion 14 can engage with the corresponding first limiting hole 21, and the third limiting hole 15 can engage with the corresponding third limiting protrusion 24. By setting the first limiting protrusion 14 and the third limiting hole 15 on different sides of the chassis 1, the first limiting structure 34 and the second limiting structure 35 can restrict the relative movement of the chassis 1 and the first extension 29 from multiple directions after they are engaged, which is beneficial to the more stable assembly of the chassis 1 and the first extension 29.

[0079] In structure A2, the first limiting protrusion 14 and the third limiting hole 15 are spaced apart along the length of the chassis 1. Therefore, the first limiting hole 21 and the third limiting protrusion 24 can also be spaced apart along the length of the chassis 1. This ensures that the mating positions of the first limiting protrusion 14 and the first limiting hole 21 are spaced apart from the mating positions of the third limiting protrusion 24 and the third limiting hole 15 along the length of the chassis 1. This prevents the mating of the first limiting protrusion 14 and the first limiting hole 15 from interfering with the mating of the third limiting protrusion 24 and the third limiting hole 15. Simultaneously, the mating of the third limiting protrusion 24 and the third limiting hole 15 is also less likely to interfere with the mating of the first limiting protrusion 14 and the first limiting hole 15. This reduces the assembly difficulty of the chassis 1 and the first extension member 29, improves the assembly efficiency of the chassis assembly 100, and prevents the third limiting hole 15 from weakening the first limiting protrusion 14.

[0080] In structure A3, there are multiple first limiting protrusions 14, and these multiple first limiting protrusions 14 are spaced apart along the length direction of the chassis 1. Each first limiting protrusion 14 can be matched with the corresponding first limiting hole 21, so as to improve the connection strength between the chassis 1 and the first extension member 29, so that the chassis assembly 100 has better structural strength and can improve the reliability of the chassis assembly 100.

[0081] In structure A4, there are multiple third limiting holes 15, and these multiple third limiting holes 15 are spaced apart along the length direction of the chassis 1. Each third limiting hole 15 can cooperate with the corresponding third limiting protrusion 24 to improve the connection strength between the chassis 1 and the first extension member 29, so that the chassis assembly 100 has better structural strength and can improve the reliability of the chassis assembly 100.

[0082] Please refer to Figure 4 , Figure 5 , Figures 9-11 In some embodiments, the third limiting structure 36 includes a second limiting protrusion 23 and a fourth limiting hole 32, and the fourth limiting structure 37 includes a second limiting hole 51 that engages with the second limiting protrusion 23 and a fourth limiting protrusion 52 that engages with the fourth limiting hole 32. It is evident that by providing the limiting protrusion and the limiting hole, the assembly of the face frame 6 and the first extension member 29 can be simplified, thus improving assembly efficiency. Furthermore, the face frame 6 can not only engage with the second limiting protrusion 23 of the first extension member 29 through the second limiting hole 51, but also with the fourth limiting hole 32 of the first extension member 29 through the fourth limiting protrusion 52, enabling multi-point engagement between the first extension member 29 and the face frame 6, thereby improving the reliability of the assembly of the first extension member 29 and the face frame 6.

[0083] Please refer to Figures 1-24 In some embodiments, a first limiting protrusion 14 protrudes from one end of the chassis 1 in the width direction (i.e., the extension structure 2 is fitted with the first limiting protrusion 14 protruding from one end of the width of the chassis 1), the first extension member 29 forms a first limiting hole 21, the first limiting protrusion 14 is inserted into the first limiting hole 21, the side of the first extension member 29 facing away from the chassis 1 forms a first support surface 291, the first support surface 291 is adapted to abut against the face frame 5, the first support surface 291 has a second limiting protrusion 23 corresponding to the first limiting protrusion 14, the second limiting protrusion 23 is adapted to be inserted into the second limiting hole 51 on the face frame 5; and / or, a third limiting hole 15 is formed on the side of the chassis 1 facing the air duct 4, the first extension member 29 has a third limiting protrusion 24 and a fourth limiting hole 32 corresponding to the third limiting hole 15, the third limiting protrusion 24 is inserted into the third limiting hole 15, and the fourth limiting hole 32 is adapted to be inserted into the fourth limiting protrusion 52 on the face frame 5.

[0084] By inserting the first limiting protrusion 14 into the first limiting hole 21, the first extension 29 and the chassis 1 can be assembled. Simultaneously, by inserting the second limiting protrusion 23 into the second limiting hole 51, the first extension 29 and the face frame 5 can be assembled. The assembly method is relatively simple and improves assembly efficiency. The first limiting protrusion 14 and the second limiting protrusion 23 are arranged opposite each other, for example, along the width direction of the chassis 1. When the chassis 1 mates with the face frame 5 via the first extension 29, there is no need to significantly change the position of the second limiting hole 51 on the face frame 5; only the corresponding dimensions of the face frame 5 need to be adjusted. This reduces the mold opening cost of the face frame 5, thereby reducing the manufacturing cost of the air conditioner indoor unit 300. In other words, by setting a first extension 29, and the second limiting protrusion 23 on the first extension 29 being opposite to the first limiting protrusion 14 on the chassis 1, the second limiting protrusion 23 is used to replace the first limiting protrusion 14 to cooperate with the second limiting hole 51, so that the position of the second limiting hole 51 on the face frame 5 does not need to be changed significantly, only the corresponding size of the face frame 5 needs to be adjusted, and there is no need to rearrange the structure on the face frame 5, thus reducing the design cost and mold opening cost of the face frame 5.

[0085] By inserting the third limiting protrusion 24 into the third limiting hole 15, the first extension 29 and the chassis 1 can be assembled. Simultaneously, by inserting the fourth limiting protrusion 52 into the fourth limiting hole 32, the first extension 29 and the face frame 5 can be assembled. The assembly method is relatively simple and improves assembly efficiency. The third limiting hole 15 and the fourth limiting hole 32 are arranged opposite each other, for example, along the width direction of the chassis 1. When the chassis 1 mates with the face frame 5 via the first extension 29, there is no need to significantly change the position of the fourth limiting protrusion 52 on the face frame 5; only the corresponding dimensions of the face frame 5 need to be adjusted. This reduces the mold opening cost of the face frame 5, thereby reducing the manufacturing cost of the air conditioner indoor unit 300. In other words, by setting a first extension 29, the fourth limiting hole 32 on the first extension 29 is positioned opposite to the third limiting hole 15 on the chassis 1, so that the fourth limiting hole 32 can replace the third limiting hole 15 to cooperate with the fourth limiting protrusion 52. This way, the position of the fourth limiting protrusion 52 on the face frame 5 does not need to be changed much, and only the corresponding size of the face frame 5 needs to be adjusted. There is no need to rearrange the structure on the face frame 5, which reduces the design cost and mold opening cost of the face frame 5.

[0086] Therefore, the chassis 1 can not only cooperate with the first limiting hole 21 of the first extension member 29 through the first limiting protrusion 14, but also cooperate with the third limiting protrusion 24 of the first extension member 29 through the third limiting hole 15, so that the chassis 1 and the first extension member 29 can achieve multi-point cooperation, which facilitates the improvement of the reliability of the assembly of the chassis 1 and the first extension member 29; the first extension member 29 can not only cooperate with the second limiting hole 51 of the face frame 5 through the second limiting protrusion 23, but also cooperate with the fourth limiting protrusion 52 of the face frame 5 through the fourth limiting hole 32, so that the first extension member 29 and the face frame 5 can achieve multi-point cooperation, which facilitates the improvement of the reliability of the assembly of the chassis assembly 100 and the face frame 5.

[0087] Please refer to Figure 1 and Figure 2 In some embodiments, the chassis 1 has a plurality of first limiting protrusions 14 spaced apart along the length of the chassis 1, then the first extension member 29 has a plurality of first limiting holes 21 spaced apart along the length of the chassis 1, and the first support surface 291 has a plurality of second limiting protrusions 23 spaced apart along the length of the chassis 1, then the face frame 5 has a plurality of second limiting holes 51 spaced apart along the length of the chassis 1, and the plurality of first limiting protrusions 14 and the plurality of second limiting protrusions 23 are arranged opposite each other along the width of the chassis 1; and / or, please refer to Figure 1 , Figure 2 and Figure 8 The chassis 1 has a plurality of third limiting holes 15 spaced apart along the length of the chassis 1. The first extension member 29 has a plurality of third limiting protrusions 24 spaced apart along the length of the chassis 1. The first extension member 29 has a plurality of fourth limiting holes 32 spaced apart along the length of the chassis 1. The face frame 5 has a plurality of fourth limiting protrusions 52 spaced apart along the length of the chassis 1. The plurality of third limiting holes 15 and the plurality of fourth limiting holes 32 are arranged opposite to each other along the width of the chassis 1.

[0088] The chassis 1 is provided with a plurality of first limiting protrusions 14 spaced apart along its length. Each first limiting protrusion 14 can be matched with a corresponding first limiting hole 21 to improve the connection strength between the chassis 1 and the extension structure 2, so that the chassis assembly 100 has better structural strength and improves the reliability of the chassis assembly 100. The first extension member 29 is provided with a plurality of second limiting protrusions 23 spaced apart along its length. Each second limiting protrusion 23 can be matched with a corresponding second limiting hole 51 to improve the connection strength between the chassis assembly 100 and the face frame 5, so that the chassis assembly 100 and the face frame 5 have better structural strength after assembly and improve the reliability of the chassis assembly 100 and the face frame 5 after assembly. Among them, multiple first limiting protrusions 14 and multiple second limiting protrusions 23 are arranged opposite each other along the width direction of the chassis 1. When the chassis 1 is engaged with the face frame 5 through the first extension 29, it is not necessary to make a big change to the setting position of the second limiting hole 51 on the face frame 5. Only the corresponding size of the face frame 5 needs to be adjusted, which reduces the mold opening cost of the face frame 5 and thus reduces the manufacturing cost of the air conditioner indoor unit 300.

[0089] The chassis 1 is provided with a plurality of third limiting holes 15 spaced apart along its length. Each third limiting hole 15 can be matched with a corresponding third limiting protrusion 24 to improve the connection strength between the chassis 1 and the first extension member 29, so that the chassis assembly 100 has better structural strength and improves the reliability of the chassis assembly 100. The first extension member 29 is provided with a plurality of fourth limiting holes 32 spaced apart along its length. Each fourth limiting hole 32 can be matched with a corresponding fourth limiting protrusion 52 to improve the connection strength between the chassis assembly 100 and the face frame 5, so that the chassis assembly 100 and the face frame 5 have better structural strength after assembly and improve the reliability of the chassis assembly 100 and the face frame 5 after assembly. Among them, multiple third limiting holes 15 and multiple fourth limiting holes 32 are arranged opposite to each other along the width direction of the chassis 1. When the chassis 1 is engaged with the face frame 5 through the first extension 29, it is not necessary to make a big change to the setting position of the fourth limiting holes 32 on the face frame 5. Only the corresponding size of the face frame 5 needs to be adjusted, which reduces the mold opening cost of the face frame 5 and thus reduces the manufacturing cost of the air conditioner indoor unit 300.

[0090] Therefore, by setting multiple first limiting protrusions 14 to cooperate with corresponding first limiting holes 21, and multiple third limiting protrusions 24 to cooperate with corresponding third limiting holes 15, the connection strength between the chassis 1 and the first extension member 29 is improved, and the reliability of the chassis assembly 100 is improved. By setting multiple second limiting protrusions 23 to cooperate with corresponding second limiting holes 51, and multiple fourth limiting protrusions 52 to cooperate with corresponding fourth limiting holes 32, the connection strength between the chassis assembly 100 and the face frame 5 is improved, and the reliability of the chassis assembly 100 and the face frame 5 after assembly is improved.

[0091] Please refer to Figure 1 , Figure 2 , Figure 8 , Figure 10 and Figures 13-16 In some embodiments, the first limiting protrusion 14 and the second limiting protrusion 23 both protrude along the width direction of the chassis 1; and / or, the third limiting protrusion 24 protrudes along the thickness direction of the chassis 1.

[0092] Both the first limiting protrusion 14 and the second limiting protrusion 23 protrude along the width direction of the chassis 1. When the first limiting protrusion 14 engages with the first limiting hole 21, it effectively restricts the relative movement of the chassis 1 and the extension structure 2 in the direction perpendicular to the width of the chassis 1, thereby giving the chassis assembly 100 better stability. Simultaneously, when the second limiting protrusion 23 engages with the second limiting hole 51, it effectively restricts the relative movement of the chassis assembly 100 and the face frame 5 in the direction perpendicular to the thickness of the chassis 1, thereby giving the chassis assembly 100 and the face frame 5 better stability after engagement. Stability is ensured, and the first limiting protrusion 14 and the second limiting protrusion 23 are both protruding along the width direction of the chassis 1. For example, the first limiting protrusion 14 and the second limiting protrusion 23 both protrude along the width direction of the chassis 1 towards the extension structure 2, so that the assembly method of the first limiting protrusion 14 and the first limiting hole 21 is approximately the same as the assembly direction of the second limiting protrusion 23 and the second limiting hole 51. This makes it easier to reduce the assembly difficulty of the air conditioner indoor unit 300 after the extension structure 2 is added, as the assembly direction of the face frame 5 and the chassis 1 is not easily changed.

[0093] The third limiting protrusion 24 protrudes along the thickness direction of the chassis 1. When the third limiting protrusion 24 engages with the third limiting hole 15, it can effectively restrict the relative movement of the chassis 1 and the extension structure 2 in the direction perpendicular to the thickness of the chassis 1, thereby giving the chassis assembly 100 better stability. Thus, through the aforementioned first limiting protrusion 14 and third limiting protrusion 24, the movement of the chassis 1 and the extension structure 2 in multiple directions can be effectively restricted, which facilitates the improvement of the stability of the chassis 1 and the extension structure 2 after engagement, and is beneficial to improving the reliability of the chassis assembly 100.

[0094] Please refer to Figures 9-12 In some embodiments, the fourth limiting protrusion 52 protrudes along the thickness direction of the chassis 1. When the fourth limiting protrusion 52 is engaged with the fourth limiting hole 32, it can effectively limit the relative movement of the chassis assembly 100 and the face frame 5 in the direction perpendicular to the thickness of the chassis 1, so that the chassis assembly 100 and the face frame 5 can have better stability after being engaged.

[0095] Furthermore, the third limiting protrusion 24 and the fourth limiting protrusion 52 both protrude along the thickness direction of the chassis 1. For example, the third limiting protrusion 24 and the fourth limiting protrusion 52 both protrude along the direction away from the air duct 4 in the thickness direction of the chassis 1, so that the assembly method of the third limiting protrusion 24 and the third limiting hole 15 can be approximately the same as the assembly direction of the fourth limiting protrusion 52 and the fourth limiting hole 32, so that after the extension structure 2 is added, the assembly direction of the face frame 5 and the chassis 1 is not easily changed significantly, which helps to reduce the assembly difficulty of the air conditioner indoor unit 300.

[0096] Furthermore, the second limiting protrusion 23 protrudes along the width direction of the chassis 1, and the fourth limiting protrusion 52 protrudes along the thickness direction of the chassis 1. When the second limiting protrusion 23 is engaged with the second limiting hole 51 and the fourth limiting protrusion 52 is engaged with the fourth limiting hole 32, the movement of the chassis assembly 100 and the face frame 5 in multiple directions can be effectively restricted, which facilitates the improvement of the stability of the chassis assembly 100 and the face frame 5 after engagement.

[0097] Please refer to Figure 1 , Figure 2 , Figure 8 , Figure 20 and Figure 21 In some embodiments, the first limiting structure 34 includes a first limiting protrusion 14, and there are multiple first limiting protrusions 14, all of which protrude along the width direction of the chassis 1. The second limiting structure 35 includes a first limiting hole 21 that limits and engages with the first limiting protrusions 14. The first limiting hole 21 is configured as a first insertion hole. The first limiting protrusions 14 on the chassis 1 are adapted to be inserted into the first insertion hole along the width direction of the chassis 1, and the first limiting protrusions 14 and the first insertion hole limit and engage along the length direction of the chassis 1; and / or, please refer to Figure 1 , Figure 2 , Figure 8 , Figure 19 , Figure 20 and Figure 21 The first limiting hole 21 is configured as a second insertion hole 212. The second insertion hole 212 includes a first hole portion 2121 and a second hole portion 2122. The second hole portion 2122 communicates with one side of the first hole portion 2121 in the length direction of the chassis 1. In the thickness direction of the chassis 1, the size of the first hole portion 2121 is (e.g., ...). Figure 19 L2) is larger than the size of the second hole 2122 (e.g.) Figure 19 L1), the first limiting protrusion 14 on the chassis 1 is adapted to be inserted into the first hole 2121 along the thickness direction of the chassis 1 and to be limited and fitted into the second hole 2122 along the length direction of the chassis 1.

[0098] The first limiting protrusion 14 protrudes along the width direction of the chassis 1 and is inserted into the first insertion hole along the width direction of the chassis 1, so that the assembly of the chassis 1 and the first extension 29 is simpler and the assembly efficiency of the chassis assembly 100 is improved. The first limiting protrusion 14 and the first insertion hole are matched in a limiting manner along the length direction of the chassis 1, so that after the first limiting protrusion 14 and the first insertion hole are matched, the chassis 1 and the first extension 29 are not likely to move relative to each other along the length direction of the chassis 1.

[0099] The first limiting protrusion 14 protrudes along the width direction of the chassis 1, and the first limiting protrusion 14 is inserted into the first hole 2121 along the thickness direction of the chassis 1 and limited to the second hole 2122 along the length direction of the chassis 1. For example, after the first limiting protrusion 14 is inserted into the first hole 2121 along the thickness direction of the chassis 1, it pushes the first extension member 29 to move along the length direction of the chassis 1 so that the first limiting protrusion 14 is fitted into the second hole 2122. The second hole 2122 is used to limit the first limiting protrusion 14 on both sides in the thickness direction, so that after the first limiting protrusion 14 is fitted into the second insertion hole 212, the chassis 1 and the first extension member 29 are not likely to move relative to each other along the thickness direction of the chassis 1.

[0100] For example, the expansion structure 2 includes a first expansion member 29 and a second expansion member 30. The chassis 1 is limited and engaged with the face frame 5 through the expansion structure 2. The chassis 1 has a first part 12 and a second part 13. The first part 12 is provided corresponding to the air duct 4. The second part 13 is connected to one end of the length of the first part 12 and is located outside the air duct 4. A second insertion hole 212 is formed on the first expansion member 29 and a first insertion hole is formed on the second expansion member 30, so that the second expansion member 30 can be engaged with the chassis 1 along the length direction of the chassis 1. When the first expansion member 29 and the chassis 1 are assembled, the first limiting protrusion 14 can be inserted into the first hole 2121 along the thickness direction of the chassis 1, and then the first expansion member 29 can be pushed to move along the length direction of the chassis 1, so that the first expansion member 29 can be engaged with the chassis 1 along the thickness direction of the chassis 1.

[0101] Furthermore, a third limiting protrusion 24 is formed on the first extension member 29 along the thickness direction of the chassis 1. Through the above-mentioned second insertion hole 212, the first limiting protrusion 14 and the second insertion hole 212 can cooperate along the thickness direction of the chassis 1. At the same time, the third limiting protrusion 24 and the third limiting hole 15 can also cooperate along the thickness direction of the chassis 1, so that the assembly direction of the first extension member 29 is more unified, which makes it easier to reduce the assembly difficulty of the first extension member 29.

[0102] Please refer to Figure 15 and Figure 16In some embodiments, the third limiting protrusion 24 is a hollow component. By making the third limiting protrusion 23 a hollow component, the amount of material used in manufacturing the extension structure 2 is reduced, and it is easier to achieve a lightweight design of the extension structure 2. For example, the extension structure 2 includes a first extension member 29, on which the third limiting protrusion 24 is a hollow component.

[0103] Please refer to Figure 1 , Figure 8 , Figure 13 , Figure 19 and Figure 22 In some embodiments, the first limiting structure 34 further includes a third limiting hole 15, all the first limiting holes 21 are configured as second insertion holes 212, and the width of the third limiting protrusion 24 (e.g., in the length direction of the chassis 1) is... Figure 14 L4) is smaller than the width of the third limiting hole 15 (e.g. Figure 8 In the first preset position (L3), the first extension member 29 is configured to slide along the length direction of the chassis 1 from a first preset position to a second preset position. In the first preset position, the first hole 2121 is inserted into the first limiting protrusion 14, and the third limiting protrusion 24 is inserted into the third limiting hole 15; in the second preset position, the second hole 2122 is inserted into the first limiting protrusion 14, and the third limiting protrusion 24 is still inserted into the third limiting hole 15.

[0104] It is understandable that "part A is slidably installed on part B" refers to an assembly method in which part A can move smoothly relative to part B in a specific direction (such as a straight line or an arc) through a preset "sliding constraint structure" and complete the positioning or fixing at the target position.

[0105] As can be seen, the first hole 2121 and the second hole 2122 are connected so that the first limiting protrusion 14 can move within the first limiting hole 21; the width of the third limiting hole 15 is greater than the width of the third limiting protrusion 24 so that the third limiting protrusion 24 can move within the third limiting hole 15.

[0106] When the first extension member 29 needs to be installed on the chassis 1, it can be first inserted into the chassis 1 along the thickness direction, so that the first limiting protrusion 14 is inserted into the first hole 2121 and the third limiting protrusion 24 is inserted into the third limiting hole 15. At this time, the first extension member 29 is located in the first preset position. Then, the first extension member 29 is pushed along the length direction of the chassis 1 from the first hole 2121 towards the second hole 2122 until the first limiting protrusion 14 is inserted into the second hole 2122 and the third limiting protrusion 24 is still inserted into the third limiting hole 15. At this time, the first extension member 29 is located in the second preset position. Thus, by the above installation process, the assembly of the first extension member 29 and the chassis 1 can be completed, which reduces the assembly difficulty of the chassis assembly 100.

[0107] Please refer to Figure 1 and Figure 4 In some embodiments, the side of the first extension member 29 facing away from the chassis 1 is formed as a first support surface 291. The first support surface 291 is adapted to abut against the face frame 5. The first support surface 291 also has at least one protruding rib 25, which is spaced apart on the side of the first support surface 291 facing the chassis 1, and the protruding rib 25 is adapted to abut against the air inlet filter of the indoor air conditioning unit 300; and / or, please refer to Figure 1 and Figure 2 The first extension member 29 has a connecting portion 26, on which a threaded fastener is provided. The threaded fastener passes through a connecting hole on the connecting portion 26 in a direction perpendicular to the length direction of the chassis 1 (for example, the threaded fastener passes through a connecting hole on the connecting portion 26 in the width direction of the chassis 1), and the threaded fastener is threadedly connected to the chassis 1. At least one connecting hole has a notch 261 on its periphery, and the notch 261 penetrates the hole wall of the connecting hole and the outer periphery of the connecting portion 26. It can be seen that the rib portion 25 does not directly contact the face frame 5, and the rib portion 25 is unlikely to interfere with the fit between the first extension member 29 and the face frame 5. At the same time, the first extension member 29 is provided at the air inlet end 41 of the air duct 4. By providing the rib portion 25 on the first extension member 29, the rib portion 25 can abut against the air inlet filter, providing a clear positioning point for the assembly of the air inlet filter, which facilitates the reduction of the assembly difficulty of the air inlet filter.

[0108] For example, the chassis assembly 100 is used for a wall-mounted air conditioner. The air inlet of the wall-mounted air conditioner is usually located at its top. The first extension member 29 is located at the upper end of the chassis 1. The ribs 25 are spaced apart on the lower side of the first support surface 291 of the first extension member 29, so that the air inlet filter can abut against and cooperate with the ribs 25 on the side facing the air inlet, providing a clear installation point for the air inlet filter and making it easier to reduce the installation difficulty of the air inlet filter.

[0109] Furthermore, the first extension member 29 has a plurality of protruding ribs 25, for example, the plurality of protruding ribs 25 are spaced apart along the length direction of the chassis 1, and the plurality of protruding ribs 25 can evenly abut against the air inlet filter, so that the setting position of the air inlet filter can be more stable, which helps to improve the reliability of the air conditioner indoor unit 300.

[0110] The first extension 29 and the chassis 1 can be fixed by threaded fasteners to give the first extension 29 and the chassis 1 better connection strength, which facilitates the improvement of the reliability of the chassis assembly 100. When disassembling the extension structure 2 and the chassis 1, if the threaded fasteners are stripped, a tool can be inserted between the connecting part 26 and the chassis 1 through the notch 261, and then the threaded fasteners can be pried out, so as to reduce the difficulty of disassembling the first extension 29 and the chassis 1. At the same time, the setting of the notch 261 will not easily affect the installation and connection of the threaded fasteners.

[0111] Furthermore, the first extension member 29 has multiple connecting portions 26, each connecting portion 26 being fixed to the chassis 1 by a corresponding threaded fastener, which facilitates improving the assembly reliability of the chassis 1 and the first extension member 29; the connecting portion 26 can also be a single one. For example, the first extension member 29 includes two connecting portions 26, one connecting portion 26 being located at one end of the length of the first extension member 29, and the other connecting portion 26 being located at the other end of the length of the first extension member 29. The connecting hole of one connecting portion 26 has a notch 261, while the connecting hole of the other connecting portion 26 does not have a notch 261.

[0112] Please refer to Figure 20 and Figure 21 In some embodiments, the first extension member 29 corresponds to the air duct 4 and the first extension member 29 includes an extension body 27 and a reinforcing rib 28. The extension body 27 has a groove 271, and the groove 271 is provided in the thickness direction of the chassis 1 away from the air duct 4.

[0113] As can be seen, the extension body 27 has a groove 271 inside. For example, the extension body 27 is a hollow part, so as to reduce the weight of the extension structure 2 and reduce the amount of material required to manufacture the first extension part 29, which facilitates the lightweight design of the first extension part 29. The groove 271 is set away from the air duct 4 in the thickness direction of the chassis 1, so that the airflow is not easy to flow through the groove 271 and cause airflow turbulence and other problems. The first extension part 29 is not likely to affect the air intake of the air duct 4, which facilitates the improvement of the reliability of the chassis assembly 100.

[0114] The reinforcing rib 28 is provided in the groove 271, and the reinforcing rib 28 is supported and connected between the two side walls of the groove 271 in the width direction of the chassis 1. The reinforcing rib 28 can enhance the structural strength of the extension body 27, and is more suitable for the setting of the groove 271 formed on the extension body 27. Even if the extension structure 2 accidentally collides with other parts, the extension body 27 is not prone to large deformation, which can improve the reliability of the extension structure 2.

[0115] Among them, there are multiple reinforcing ribs 28, and the multiple reinforcing ribs 28 are spaced apart along the length direction of the chassis 1. By setting multiple reinforcing ribs 28 spaced apart along the length direction of the chassis 1 in the groove 271, the groove 271 is less likely to have structural weak areas, which facilitates the improvement of the structural strength of the extension body 27, and thus improves the reliability of the first extension member 29.

[0116] Please refer to Figure 20 and Figure 21In some embodiments, the reinforcing rib 28 is connected to the bottom wall of the groove 271 facing the air duct 4. That is, the reinforcing rib 28 is not only connected to the two side walls of the groove 271 in the width direction of the chassis 1, but also connected to the bottom wall of the groove 271, so that the reinforcing rib 28 and the groove 271 can have better connection strength, which is conducive to improving the structural strength of the extension body 27, and thus improving the reliability of the first extension member 29.

[0117] Please refer to Figure 20 and Figure 21 In some embodiments, the reinforcing rib 28 is formed with an opening 281 extending along the length of the chassis 1. The opening 281 extends through one end of the reinforcing rib 28 away from the air duct 4. By providing the opening 281, the size of the reinforcing rib 28 in the thickness direction of the chassis 1 can be reduced, which facilitates the reduction of the amount of material used in manufacturing the reinforcing rib 28 and can improve the injection molding quality of the reinforcing rib 28.

[0118] For example, the reinforcing rib 28 is connected between the two sidewalls of the groove 271 in the width direction of the chassis 1, and the reinforcing rib 28 is connected to the bottom wall of the groove 271 facing the air duct 4. At the same time, the reinforcing rib 28 forms an opening 281 that extends through the length direction of the chassis 1. The opening 281 extends through the end of the reinforcing rib 28 away from the air duct 4. By providing the opening 281, the distance between the end of the reinforcing rib 28 away from the air duct 4 and the bottom wall of the groove 271 is reduced. This allows the cooling rates of the reinforcing rib 28 and the extension body 27 to be relatively similar when the reinforcing rib 28 and the extension body 27 are integrally formed, such as when the first extension part 29 is injection molded. This makes it easier to improve the molding quality of the first extension part 29 and reduce the manufacturing difficulty of the extension structure 2.

[0119] Please refer to Figure 13 , Figure 14 , Figure 20 and Figure 21 In some embodiments, the reinforcing rib 28 is connected to the bottom wall of the groove 271 facing the air duct 4, and the reinforcing rib 28 is integrally connected to the extension body 27. A first groove 2711 is formed on the side of the bottom wall of the groove 271 facing the air duct 4. The first groove 2711 extends along the width direction of the chassis 1 and is located at the connection position between the bottom wall of the groove 271 and the reinforcing rib 28.

[0120] As can be seen, by setting the first groove 2711, the amount of material used in manufacturing the first extension 29 can be reduced, facilitating the lightweight design of the first extension 29. The first groove 2711 is located at the connection position between the bottom wall of the groove 271 and the reinforcing rib 28, so as to reduce the thickness of the extension body 27 where the reinforcing rib 28 is provided. This allows the integral connection position between the bottom wall of the groove 271 and the reinforcing rib 28 to cool faster during the molding process, effectively reducing problems such as shrinkage marks, warping, and thermal stress concentration, and improving molding quality. For example, the extension body 27 and the reinforcing rib 28 are integrally molded using injection molding.

[0121] Please refer to Figure 13 , Figure 14 , Figure 20 and Figure 21 In some embodiments, the extension body 27 is a single piece. The two sidewalls of the groove 271 in the width direction of the chassis 1 are the first groove sidewall 2713 and the second groove sidewall 2714, respectively. The first groove sidewall 2713 abuts against the chassis 1. The bottom wall of the groove 271 connects the first groove sidewall 2713 and the second groove sidewall 2714. The bottom wall of the groove 271 extends beyond the first groove sidewall 2713 in a direction away from the second groove sidewall 2714. A second groove 2712 is formed on the side of the bottom wall of the groove 271 facing the air duct 4. The second groove 2712 extends along the length direction of the chassis 1 and is located at the connection position between the bottom wall of the groove 271 and the first groove sidewall 2713.

[0122] As can be seen, the bottom wall of the groove 271 extends beyond the first groove sidewall 2713 in a direction away from the second groove sidewall 2714, so that the thickness at the connection position between the bottom wall of the groove 271 and the first groove sidewall 2713 is relatively thick. By setting the second groove 2712 at the connection position between the bottom wall of the groove 271 and the first groove sidewall 2713, the thickness at the connection position between the bottom wall of the groove 271 and the first groove sidewall 2713 is increased, so that the integral connection position between the bottom wall of the groove 271 and the first groove sidewall 2713 can cool faster during the molding process, effectively reducing problems such as shrinkage marks, warping and thermal stress concentration, and facilitating the improvement of the molding quality when the extended body 27 is integrally molded.

[0123] Please refer to Figure 1 and Figure 2 In some embodiments, a first limiting hole 21 is formed on the side wall of the groove 271 adjacent to the chassis 1, which is recessed away from the chassis 1. The first limiting hole 21 is inserted into a first limiting protrusion 14 on the chassis 1. A second limiting protrusion 23 is provided on the side wall of the groove 271 away from the chassis 1. The second limiting protrusion 23 is provided corresponding to the first limiting protrusion 14 and is adapted to be inserted into a second limiting hole 51 on the faceplate 5; and / or, please refer to Figure 1 and Figure 2 A third limiting protrusion 24 is provided on the side wall of the groove 271 adjacent to the chassis 1. The third limiting protrusion 24 is inserted into the third limiting hole 15 on the chassis 1. A fourth limiting hole 32 is formed on the bottom wall of the groove 271. The fourth limiting hole 32 is suitable for insertion into the fourth limiting protrusion 52 on the face frame 5.

[0124] The groove 271 has a first limiting hole 21 recessed away from the chassis 1 on one side of the groove wall adjacent to the chassis 1. At the same time, the groove 271 has a second limiting protrusion 23 protruding on the side of the groove wall away from the chassis 1, so that the arrangement of the first limiting hole 21 and the second limiting protrusion 23 on the first extension member 29 is more reasonable, so that the chassis 1 can cooperate with the face frame 5 through the first extension member 29.

[0125] A third limiting protrusion 24 is provided on the side wall of the groove adjacent to the chassis 1 of the groove 271, and a fourth limiting hole 32 is formed on the bottom wall of the groove 271, so that the arrangement of the third limiting protrusion 24 and the fourth limiting hole 32 on the first extension member 29 is more reasonable, so that the chassis 1 can cooperate with the face frame 5 through the extension structure 2.

[0126] Please refer to Figure 20 and Figure 21 In some embodiments, the first limiting hole 21 is provided with reinforcing ribs 28 adjacent to both ends of the chassis 1 along the length direction; and / or, the fourth limiting hole 32 is provided with reinforcing ribs 28 adjacent to both ends of the chassis 1 along the length direction.

[0127] The first limiting protrusion 14 is fitted to the first limiting hole 21. By providing reinforcing ribs 28 at both ends of the first limiting hole 21 along the length of the chassis 1, the first limiting hole 21 can have better structural strength and is less prone to large deformation. This improves the reliability of the fit between the first limiting protrusion 14 and the first limiting hole 21, thereby improving the reliability of the chassis assembly 100.

[0128] The fourth limiting protrusion 52 is fitted to the fourth limiting hole 32. By providing reinforcing ribs 28 at both ends of the fourth limiting hole 32 along the length of the chassis 1, the fourth limiting hole 32 can have better structural strength and is less prone to large deformation. This improves the reliability of the fit between the fourth limiting protrusion 52 and the fourth limiting hole 32, thereby improving the reliability of the chassis assembly 100 and the face frame 5 after assembly.

[0129] Please refer to Figure 1 and Figure 4 In some embodiments, the length direction of the chassis 1 is the left-right direction, the width direction of the chassis 1 is the up-down direction, and the first extension member 29 is located at the upper end of the chassis 1.

[0130] Currently, the air inlet of common wall-mounted air conditioners is located at the top, and the air outlet is located at the front or bottom. By setting the first extension member 29 at the upper end of the chassis 1, the first extension member 29 can be set closer to the air inlet end 41 of the air duct 4, so as to reduce the impact of the first extension member 29 on the airflow of the air outlet and improve the reliability of the wall-mounted air conditioner.

[0131] For example, the chassis assembly 100 is used for a wall-mounted air conditioner. The length direction of the chassis assembly 100 is the left-right direction, and the width direction of the chassis assembly 100 is the up-down direction. The first extension member 29 is located at the upper end of the chassis 1.

[0132] Of course, in other embodiments of this application, if the air inlet of the indoor unit 300 is located at the lower end of the chassis 1, then the first extension member 29 can also be located at the lower end of the chassis 1. Further, the extension structure 2 includes the first extension member 29 and the second extension member 30. The chassis 1 cooperates with the face frame 5 through the extension structure 2. In this case, both the first extension member 29 and the second extension member 30 can be located at the upper end of the chassis 1.

[0133] Please refer to Figure 1 , Figure 8 , Figure 13 and Figure 22 In some embodiments, the chassis 1 has a first portion 12 and a second portion 13. The first portion 12 is disposed corresponding to the air duct 4, and the second portion 13 is connected to one end of the length of the first portion 12 and is located outside the air duct 4. A first extension member 29 is fixed to the first portion 12. The chassis assembly 100 also includes a second extension member 30, which is fixed to the second portion 13. The second extension member 30 and the first extension member 29 are located at the same end of the chassis 1. The second extension member 30 protrudes from the chassis 1 in the width direction so that the chassis 1 is adapted to be limited and engaged with the face frame 5 by means of the second extension member 30. Exemplarily, the first extension member 29 extends along the length direction of the chassis 1, and the second extension member 30 extends along the width direction of the chassis 1. It can be understood that the length direction of the first portion 12 is the length direction of the chassis 1.

[0134] As can be seen, by providing a first extension member 29 in the first part 12 and a second extension member 30 in the second part 13, the dimensions of the chassis 1 and the extension structure 2 can be better matched in the length direction of the chassis 1, so that the chassis 1 can cooperate with the face frame 5 through the first extension member 29 and the second extension member 30.

[0135] Furthermore, by providing the first extension 29, the first part 12 can have a larger width. The first extension 29 can provide more space for the arrangement of the heat exchanger 3, and can accommodate larger models of heat exchangers 3 without having to re-mold the chassis 1, which helps to reduce the manufacturing cost of the chassis assembly 100. At the same time, by providing the second extension 30, the second part 13 can have a larger width, which can also provide more space for the arrangement of other components, such as the electrical control box arranged in the second part 13.

[0136] Please refer to Figure 1 , Figure 8 , Figure 13 and Figure 22 In some embodiments, the portion of the chassis 1 corresponding to the air duct 4 also has a second mounting portion 16. The second mounting portion 16 is used to mount the impeller (e.g., a cross-flow impeller) of the indoor air conditioning unit 300. The second mounting portion 16 includes a first mounting platform 161 and a second mounting platform 162 that are arranged opposite to each other and spaced apart along the length direction of the chassis 1. The first mounting platform 161 and the second mounting platform 162 are located on opposite sides of the air duct 4, respectively. The two ends of the length of the first extension member 29 are opposite to the first mounting platform 161 and the second mounting platform 162, respectively. The second extension member 30 is provided on the side of the first mounting platform 161 that is away from the second mounting platform 162. For example, one end of the impeller can be installed on the first mounting platform 161, and the other end of the impeller can be installed on the second mounting platform 162. The heat exchanger 3 surrounds part of the peripheral wall of the impeller so that both ends of the heat exchanger 3 can also be located between the first mounting platform 161 and the second mounting platform 162. Combined with the fact that both ends of the first extension member 29 are respectively opposite to the first mounting platform 161 and the second mounting platform 162, the first extension member 29 can provide more space for the arrangement of the heat exchanger 3. It can adapt to larger models of heat exchangers 3 without re-molding the chassis 1, which helps to reduce the manufacturing cost of the chassis assembly 100.

[0137] Please refer to Figure 1 In some embodiments, the side of the first extension member 29 facing away from the chassis 1 is formed as a first support surface 291, and the side of the second extension member 30 facing away from the chassis 1 is formed as a second support surface 301. The first support surface 291 and the second support surface 301 are flush and both are adapted to abut against the face frame 5. This facilitates the first support surface 291 and the second support surface 301 to fit on the same continuous plane on the face frame 5, making the shape of the face frame 5 more regular and simplifying its structure.

[0138] Optionally, the second extension member 30 has a fifth limiting structure and a sixth limiting structure. The fifth limiting structure engages with the first limiting structure 34, and the sixth limiting structure is adapted to engage with the fourth limiting structure 37. As an example, the fifth limiting structure has the same structural form as the second limiting structure 35; and / or, the sixth limiting structure has the same structural form as the third limiting structure 36. As an example, the sixth limiting structure and the first limiting structure 34 are arranged opposite each other along the width direction of the chassis 1, and their arrangement positions and methods along the length direction of the chassis 1 can be the same. As an example, the third limiting structure 36 and the sixth limiting structure each include a second limiting protrusion 23.

[0139] Please refer to Figure 8 and Figure 25 In some embodiments, the first extension member 29 and the second extension member 30 are spaced apart, so that there can be a certain amount of empty space between the first extension member 29 and the second extension member 30 to facilitate the arrangement of other components. For example, the heat exchanger 3 needs to be connected to the compressor through a connecting pipe. By setting the above-mentioned empty space, the first extension member 29 and the second extension member 30 are less likely to interfere with the assembly of the connecting pipe. The connecting pipe of the heat exchanger 3 can be assembled to the chassis 1 through the above-mentioned empty space.

[0140] In other embodiments of this application, the first extension member 29 and the second extension member 30 are integrally connected, for example, the first extension member 29 and the second extension member 30 are integrally formed, so as to reduce the manufacturing difficulty of the extension structure 2 and improve the manufacturing efficiency of the extension structure 2.

[0141] Furthermore, such as Figure 1 and Figure 24 The chassis assembly 100 also includes a base plate 6, which is located between the first part 12 and the second part 13. The base plate 6 has openings through which the connecting pipe of the heat exchanger 3 can extend out of the chassis 1. Simultaneously, the base plate 6 can prevent the connecting pipe from falling out of the chassis 1, making the arrangement of the connecting pipe on the chassis 1 more stable and improving the reliability of the indoor air conditioning unit 300. If the first extension member 29 and the second extension member 30 are spaced apart, the base plate 6 is located between the first extension member 29 and the second extension member 30, with both ends of the base plate 6 in the length direction of the chassis 1 respectively engaging with the first extension member 29 and the second extension member 30. If the first extension member 29 and the second extension member 30 are integrally connected, the base plate 6 is located on the side of the first extension member 29 facing the chassis 1 in the width direction. When the heat exchanger 3 needs to be installed, the heat exchanger 3 and the base plate 6 can be installed together on the chassis 1 first, and then the first extension member 29 and the second extension member 30 can be assembled onto the chassis 1.

[0142] Please refer to Figure 1 , Figure 8 , Figure 13 and Figure 22 In some embodiments, the first extension member 29 and the second extension member 30 are spaced apart, and both the first extension member 29 and the second extension member 30 are slidably mounted on the chassis 1. The sliding directions of the two are different, and the first extension member 29 and the second extension member 30 respectively have a stop portion 31 that abuts against the chassis 1 along the corresponding sliding direction.

[0143] As can be seen, both the first extension member 29 and the second extension member 30 are slidably installed on the chassis 1, and the sliding directions of the first extension member 29 and the second extension member 30 are different, so that when the first extension member 29 and the second extension member 30 are assembled on the chassis 1, the first extension member 29 and the second extension member 30 are less likely to interfere with each other, which facilitates the simultaneous assembly of the first extension member 29 and the second extension member 30, thereby improving the assembly efficiency of the chassis assembly 100. In addition, both the first extension member 29 and the second extension member 30 have a stop part 31. When the first extension member 29 and the second extension member 30 are installed in place, the corresponding stop part 31 can stop against the chassis 1, thereby reducing the assembly difficulty of the chassis assembly 100.

[0144] Please refer to Figure 1 , Figure 8 , Figure 13 , Figure 19 and Figure 22 In some embodiments, the first extension member 29 extends into a long strip along the length direction of the chassis 1, and the first extension member 29 is slidably installed along the length direction of the chassis 1. The stop portion 31 of the first extension member 29 is located at its end away from the second extension member 30. Therefore, the first extension member 29 can slide towards the second extension member 30 along its length direction, making it less likely to obstruct the installation position of the second extension member 30. The first extension member 29 and the second extension member 30 are less likely to interfere with each other, thus improving the assembly efficiency of the chassis assembly 100. Alternatively, the second extension member 30 extends into a long strip along the width direction of the chassis 1, and the second extension member 30 is slidably installed along the width direction of the chassis 1. The stop portion 31 of the second extension member 30 is located at one end of its length, and the stop portion 31 is opposite to the first extension member 29, so that the first extension member 29 can be slidably installed along the width direction of the chassis 1, and the installation position of the first extension member 29 is not easily blocked. The first extension member 29 and the second extension member 30 are less likely to interfere with each other, which facilitates the improvement of the assembly efficiency of the chassis assembly 100.

[0145] Taking the length direction of chassis 1 as the left-right direction, the first extension member 29 is located to the left of the second extension member 30, and the width direction of chassis 1 as the up-down direction, with the extension structure 2 located at the upper end of chassis 1 as an example, the stop portion 31 of the first extension member 29 is located at its left end, and the first extension member 29 is slidably installed from left to right. The stop portion of the second extension member 30 is located at its top, and the second extension member 30 is slidably installed from top to bottom. Exemplarily, chassis 1 has a first limiting protrusion 14, which protrudes along the width direction of chassis 1. The first extension member 29 has a first limiting hole 21, which is configured as a second insertion hole 212. The second insertion hole 212 includes a first hole portion 2121 and a second hole portion 2122. The second hole portion 2122 connects to one side of the first hole portion 2121 in the length direction of chassis 1. In the thickness direction of chassis 1, the size of the first hole portion 2121 (e.g., ...) Figure 19 L2) is larger than the size of the second hole 2122 (e.g.) Figure 19 In L1), the first limiting protrusion 14 on the chassis 1 is inserted into the first hole 2121 along the thickness direction of the chassis 1, and pushes the first extension member 29 to be limited and fitted into the second hole 2122 along the length direction of the chassis 1. The end of the first extension member 29 away from the second extension member 30 in the length direction of the chassis 1 protrudes into the stop part 31. The stop part 31 protrudes towards the chassis 1 in the width direction of the chassis 1. When the first limiting protrusion 14 is fitted into the second insertion hole 212, the stop part 31 of the second extension member 30 can stop and fit into the chassis 1.

[0146] For example, the chassis 1 has a first limiting protrusion 14, which protrudes along the width direction of the chassis 1. The second extension member 30 has a first limiting hole 21, which is configured as a first insertion hole. The first insertion hole is a straight hole. The first limiting protrusion 14 on the chassis 1 is inserted into the first insertion hole along the width direction of the chassis 1. The second extension member 30 forms a stop portion 31 on one side wall away from the chassis 1 in the width direction. When the first limiting protrusion 14 is engaged with the first insertion hole, the stop portion 31 of the second extension member 30 can stop and engage with the chassis 1.

[0147] Please refer to Figures 25-27According to a second aspect embodiment of the present invention, an indoor air conditioning unit 300 includes a face frame 5 and a heat exchanger assembly 200. The heat exchanger assembly 200 includes a heat exchanger 3 and a chassis assembly 100 of the indoor air conditioning unit 300 according to a first aspect embodiment of the present invention. The heat exchanger 3 is disposed in the air duct 4. The side of the first extension member 29 facing away from the chassis 1 is formed as a first support surface 291. The first support surface 291 abuts against the face frame 5. The end face of the aforementioned end in the width direction of the chassis 1 is formed as a mating surface 17 (i.e., the end face of the first extension member 29 that fits into the width end of the chassis 1 is formed as a mating surface 17). The mating surface 17 abuts against the first extension member 29. In the width direction of the chassis 1, the corresponding edges of the heat exchanger 3 are spaced between the first support surface 291 and the mating surface 17. The face frame 5 covers the heat exchanger assembly 200, and the face frame 5 is limited to the first extension member 29.

[0148] As can be seen, the mating surface 17 abuts against the first extension member 29, the first support surface 291 abuts against the face frame 5, and the corresponding edge of the heat exchanger 3 is spaced between the first support surface 291 and the mating surface 17, so that part of the heat exchanger 3 is located outside the chassis 1 and the above-mentioned part is located inside the first extension member 29. That is, by setting the first extension member 29, a larger arrangement space is provided for the larger model of heat exchanger 3, without having to re-mold the chassis 1 to adapt to the size of the heat exchanger 3, thus reducing the manufacturing cost of the heat exchanger assembly 200.

[0149] According to the embodiment of the present utility model, the air conditioner indoor unit 300 has a chassis 1 externally provided with a first extension member 29, which provides more space for the arrangement of the heat exchanger 3. There is no need to re-mold the chassis 1 to adapt to the size of the heat exchanger 3, so as to reduce the manufacturing cost of the chassis assembly 100. Therefore, the use of this chassis assembly 100 can reduce the manufacturing cost of the air conditioner indoor unit 300.

[0150] An air conditioner according to a third aspect of the present invention includes an indoor unit 300 according to a second aspect of the present invention.

[0151] According to the embodiments of the present invention, the use of the above-mentioned indoor air conditioning unit 300 can reduce the manufacturing cost of the air conditioner.

[0152] It is understood that the type of air conditioner in the embodiments of this application is not limited; it can be a vehicle air conditioner, a wall-mounted air conditioner, or a floor-standing air conditioner, etc. Figure 4 As shown, the air conditioner is a wall-mounted unit.

[0153] Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. In addition, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

[0154] In the description of this utility model, it should be understood that the terms "center," "lateral," "length," "thickness," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0155] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0156] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A chassis assembly for an air conditioner indoor unit, characterized in that, The chassis assembly helps to define an air duct for housing the heat exchanger of the indoor unit of the air conditioner, and the chassis assembly includes: The chassis has a first mounting portion corresponding to the air duct, and the first mounting portion is used to mount the heat exchanger. The first extension member is fixed at one end of the chassis in the width direction and extends along the length direction of the chassis. The first extension member is located at the air inlet end of the air duct and protrudes from the chassis in the width direction of the chassis, so that the chassis is adapted to be matched with the frame of the air conditioner indoor unit by means of the first extension member.

2. The chassis assembly of the air conditioner indoor unit according to claim 1, characterized in that, The chassis has a first limiting structure, the first extension has a second limiting structure and a third limiting structure, the second limiting structure is matched with the first limiting structure, and the third limiting structure is adapted to match with the fourth limiting structure on the face frame.

3. The chassis assembly of the air conditioner indoor unit according to claim 2, characterized in that, The third limiting structure is opposite to the first limiting structure along the width direction of the chassis.

4. The chassis assembly of the air conditioner indoor unit according to claim 2, characterized in that, The first limiting structure includes a first limiting protrusion and a third limiting hole; the second limiting structure includes a first limiting hole that engages with the first limiting protrusion and a third limiting protrusion that engages with the third limiting hole; the third limiting structure includes a second limiting protrusion and a fourth limiting hole; the chassis assembly is configured to satisfy at least one of the following structures: The first limiting protrusion and the third limiting hole are located on different sides of the chassis, respectively. The first limiting protrusion and the third limiting hole are spaced apart along the length direction of the chassis; The first limiting protrusion is multiple and is spaced apart along the length direction of the chassis; The third limiting hole is multiple and is spaced apart along the length of the chassis.

5. The chassis assembly of the air conditioner indoor unit according to claim 2, characterized in that, The first limiting structure includes a first limiting protrusion, which is multiple and all protrudes along the width direction of the chassis. The second limiting structure includes a first limiting hole that cooperates with the first limiting protrusions. The first limiting hole is configured as a first insertion hole, and the first limiting protrusion on the chassis is adapted to be inserted into the first insertion hole along the width direction of the chassis, and to be limited and engaged with the first insertion hole along the length direction of the chassis; and / or, The first limiting hole is configured as a second insertion hole, the second insertion hole includes a first hole portion and a second hole portion, the second hole portion is connected to one side of the first hole portion in the length direction of the chassis, and in the thickness direction of the chassis, the size of the first hole portion is larger than the size of the second hole portion, the first limiting protrusion on the chassis is adapted to be inserted into the first hole portion along the thickness direction of the chassis and to be limited and fitted into the second hole portion along the length direction of the chassis.

6. The chassis assembly of the air conditioner indoor unit according to claim 5, characterized in that, The first limiting structure further includes a third limiting hole, and the first limiting protrusion is multiple and all protrude along the width direction of the chassis. The second limiting structure includes a first limiting hole that cooperates with the first limiting protrusion. The first extension member is configured to slide along the length of the chassis from a first preset position to a second preset position. At the first preset position, the first hole is fitted with the first limiting protrusion, and the third limiting protrusion is fitted with the third limiting hole. At the second preset position, the second hole is inserted into the first limiting protrusion, and the third limiting protrusion is still inserted into the third limiting hole.

7. The chassis assembly of the air conditioner indoor unit according to claim 1, characterized in that, The side of the first extension member facing away from the chassis forms a first support surface, which is adapted to abut against the face frame. The first extension member also has at least one protruding rib, which is spaced apart on the side of the first support surface facing the chassis and adapted to abut against the air inlet filter of the indoor air conditioning unit; and / or, The first extension has a connecting portion, on which a threaded fastener is provided. The threaded fastener passes through a connecting hole on the connecting portion in a direction perpendicular to the length direction of the chassis and is threaded to the chassis. At least one of the connecting holes has a notch on its periphery, which penetrates the hole wall of the connecting hole and the outer periphery of the connecting portion.

8. The chassis assembly of the air conditioner indoor unit according to claim 1, characterized in that, The first extension component corresponds to the air duct and includes an extension body and a reinforcing rib. The extension body has a groove, and the groove opening is disposed opposite to the air duct in the thickness direction of the chassis. The reinforcing rib is disposed in the groove and is supported and connected between the two sidewalls of the groove in the width direction of the chassis. There are multiple reinforcing ribs, which are spaced apart along the length direction of the chassis.

9. The chassis assembly of the air conditioner indoor unit according to claim 8, characterized in that, The reinforcing rib is connected to the bottom wall of the groove facing the air duct. The reinforcing rib is integrally connected to the expansion body. A first groove is formed on the side of the bottom wall of the groove facing the air duct. The first groove extends along the width direction of the chassis and is located at the connection position between the bottom wall of the groove and the reinforcing rib.

10. The chassis assembly of the air conditioner indoor unit according to claim 8, characterized in that, The expansion body is a single piece. The groove has two sidewalls on either side of the chassis width direction, namely a first groove sidewall and a second groove sidewall. The first groove sidewall abuts against the chassis. The bottom wall of the groove connects the first groove sidewall and the second groove sidewall, and extends beyond the first groove sidewall in a direction away from the second groove sidewall. A second groove is formed on the side of the bottom wall of the groove facing the air duct. The second groove extends along the length of the chassis and is located at the connection between the bottom wall of the groove and the side wall of the first groove.

11. The chassis assembly of the air conditioner indoor unit according to claim 8, characterized in that, The groove has a first limiting hole formed on the side wall adjacent to the chassis, away from the recess of the chassis. The first limiting hole mates with a first limiting protrusion on the chassis. A second limiting protrusion protrudes from the side wall of the groove away from the chassis. The second limiting protrusion corresponds to the first limiting protrusion and is adapted to mate with a second limiting hole on the faceplate; and / or, A third limiting protrusion is provided on the side wall of the groove adjacent to the chassis. The third limiting protrusion is inserted into a third limiting hole on the chassis. A fourth limiting hole is formed on the bottom wall of the groove. The fourth limiting hole is adapted to be inserted into a fourth limiting protrusion on the face frame.

12. The chassis assembly of the air conditioner indoor unit according to claim 1, characterized in that, The length direction of the chassis is left-right, the width direction of the chassis is up-down, and the first extension member is located at the upper end of the chassis.

13. The chassis assembly of the air conditioner indoor unit according to any one of claims 1-12, characterized in that, The chassis has a first part and a second part. The first part corresponds to the air duct, and the second part is connected to one end of the length of the first part and is located outside the air duct. The first extension member is fixed to the first part. The chassis assembly also includes a second extension member, which is fixed to the second part. The second extension member and the first extension member are located at the same end of the chassis. The second extension member protrudes from the chassis in the width direction of the chassis so that the chassis is adapted to engage with the face frame through the second extension member.

14. The chassis assembly of the air conditioner indoor unit according to claim 13, characterized in that, The side of the first extension member facing away from the chassis forms a first support surface, and the side of the second extension member facing away from the chassis forms a second support surface. The first support surface and the second support surface are flush and are both adapted to abut against the face frame.

15. The chassis assembly of the air conditioner indoor unit according to claim 13, characterized in that, The first expansion member and the second expansion member are spaced apart, or the first expansion member and the second expansion member are integrally connected.

16. The chassis assembly of the air conditioner indoor unit according to claim 13, characterized in that, The first extension member and the second extension member are spaced apart and are both slidably mounted on the chassis. The sliding directions of the two are different, and the first extension member and the second extension member each have a stop portion that abuts against the chassis along the corresponding sliding direction.

17. The chassis assembly of the air conditioner indoor unit according to claim 16, characterized in that, The first extension member extends in a long strip shape along the length direction of the chassis and is slidably installed along the length direction of the chassis; the stop portion of the first extension member is located at its end away from the second extension member; and / or, The second extension member extends into a long strip along the width direction of the chassis and is slidably installed along the width direction of the chassis. The stop portion of the second extension member is located at one end of its length and is opposite to the first extension member.

18. An indoor unit for an air conditioner, characterized in that, The system includes a front frame and a heat exchanger assembly, the heat exchanger assembly including a heat exchanger and a chassis assembly for an indoor air conditioning unit according to any one of claims 1-17, the heat exchanger being disposed in the air duct, a side of the first extension member facing away from the chassis forming a first support surface, the first support surface abutting against the front frame, and an end face of the chassis at one end in the width direction forming a mating surface, the mating surface abutting against the first extension member. In the width direction of the chassis, the corresponding edges of the heat exchanger are spaced between the first support surface and the mating surface, and the face frame covers the heat exchanger assembly and is limited and fitted with the first extension member.

19. An air conditioner, characterized in that, Including the air conditioning indoor unit according to claim 18.

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