Air conditioner indoor unit and air conditioner

Abstract

The utility model relates to air conditioning technical field discloses an air conditioner indoor unit and air conditioner, air conditioner indoor unit includes face frame and electric control box subassembly, face frame forms with installing cavity, the front side surface of face frame corresponds installing cavity and forms with installing cavity intercommunication's first opening, the edge of first opening has first avoiding mouth, and electric control box subassembly establishes in installing cavity, and electric control box subassembly includes electric control box and main control board, and electric control box includes box and box lid, and the side of box is open to form with the second opening of the inner chamber intercommunication of box, and the box lid is connected in box and can open or close second opening, and main control board passes through second opening and first avoiding mouth and is detachably arranged in electric control box. The utility model discloses when maintaining main control board, and main control board can directly dismount through second opening and first avoiding mouth, need not to remove integral face frame to expose the maintenance path of main control board to the direct removal main control board and maintain or replace, improve the maintenance efficiency, and reduce the overall maintenance cost.

Description

Technical Field

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

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In existing wall-mounted air conditioners, the indoor unit typically has the main control board installed inside the electrical control box, which is integrated with the front panel. When the main control board needs to be repaired or replaced, the front panel obstructs the disassembly and reassembly path of the electrical control box. Repair personnel must first remove the entire front panel to access the electrical control box, complete the main board operation, and then reinstall the front panel. This results in low repair efficiency and high maintenance costs for the main control board. Utility Model Content

[0004] The purpose of this invention is to at least solve the problems of low repair efficiency and high maintenance costs of the main control board. This purpose is achieved through the following technical solution: The first aspect of this utility model discloses an indoor unit for an air conditioner, comprising: A face frame, wherein a mounting cavity is formed in the face frame, and a first opening communicating with the mounting cavity is formed on the front surface of the face frame corresponding to the mounting cavity, and the edge of the first opening has a first clearance opening; An electrical control box assembly is disposed within the mounting cavity. The electrical control box assembly includes an electrical control box and a main control board. The electrical control box includes a box body and a box cover. One side of the box body is open to form a second opening communicating with the inner cavity of the box body. The box cover is connected to the box body and can open or close the second opening. The main control board is detachably disposed within the electrical control box through the second opening and the first clearance opening.

[0005] The indoor unit of this utility model features an installation cavity and a first clearance opening on the front side of the front frame, in which the electrical control box assembly is housed. A second opening is formed on one side of the electrical control box assembly, and a cover that can open and close this second opening is provided. This allows the main control board to be directly installed and removed through the second opening and the first clearance opening, exposing the maintenance path of the electrical control box without disassembling the entire front frame. During maintenance, repair personnel do not need to remove the entire front frame first; they only need to open the cover to expose the main control board through the second opening and the first clearance opening at the edge of the first opening. This allows for direct removal of the main control board for repair or replacement, improving maintenance efficiency and reducing overall maintenance costs.

[0006] In addition, the indoor unit of the air conditioner according to this utility model may also have the following additional technical features: In some embodiments of this utility model, the main control board is inserted into the box body along a first direction, the first clearance opening is located on one side of the first opening along a second direction, and the second direction is perpendicular to the first direction.

[0007] In some embodiments of this utility model, the box body is provided with guide portions on opposite side walls along the second direction, the guide portions extend along the first direction, and the main control board is configured to be able to move along the extension direction of the guide portions.

[0008] In some embodiments of this utility model, a limiting structure is provided between the box body and the box lid. The limiting structure includes a first limiting part provided on the box body and a first mating part provided on the box lid. The first limiting part and the first mating part are mated and connected.

[0009] In some embodiments of this utility model, the first limiting part includes one of a first limiting groove and a first limiting protrusion, the first mating part includes the other of the first limiting groove and the first limiting protrusion, and the first limiting protrusion is inserted into the first limiting groove.

[0010] In some embodiments of this utility model, a connecting structure is provided between the box body and the box cover. The connecting structure and the limiting structure are respectively provided on opposite sides of the electrical control box. The connecting structure includes a connector provided on the box body and a second mating part provided on the box cover. The connector and the second mating part are connected in cooperation.

[0011] In some embodiments of this utility model, the connector includes at least one elastic arm disposed on the end face of the box cover facing the box body. The elastic arm extends in a direction away from the box cover. A second limiting part is provided at one end of the elastic arm away from the box body. The second mating part includes a slot. The elastic arm extends into the slot and is limited by the second limiting part to the slot.

[0012] In some embodiments of this utility model, a handle is provided on the side of the box cover near the connecting structure, and the box cover can be opened or closed by applying force to the handle.

[0013] In some embodiments of this utility model, the box lid includes: A first cover body, wherein a fixing part is provided on the first cover body, the fixing part being used to fix the wire harness terminal; The second cover is detachably connected to the first cover. A second clearance opening is provided on the second cover at a position corresponding to the fixing part, and the fixing part passes through the second clearance opening.

[0014] In some embodiments of this utility model, the first cover includes a first circumferential sidewall, and a third limiting part is provided on the first circumferential sidewall; the second cover includes a second circumferential sidewall, and a third mating part adapted to the third limiting part is provided on the second circumferential sidewall; the third limiting part and the third mating part cooperate with each other.

[0015] In some embodiments of this utility model, one of the third limiting part and the third mating part is a second limiting protrusion, and the other is a second limiting groove or limiting hole that mates with the second limiting protrusion.

[0016] Another aspect of this utility model provides an air conditioner, including an indoor air conditioner unit as described in any of the preceding claims. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of an indoor air conditioner unit according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of an air conditioner indoor unit according to an embodiment of the present invention with the cover open is shown. Figure 3 A schematic diagram of the structure behind the concealed cover of the indoor unit of an air conditioner according to an embodiment of the present invention is shown. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 A schematic diagram of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention is shown from a first perspective. Figure 6 for Figure 5 Cross-sectional view at point BB; Figure 7 for Figure 6 Enlarged view of point C in the middle; Figure 8 A schematic diagram of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention is shown from a second perspective. Figure 9 for Figure 8 Enlarged view at point D; Figure 10 A schematic diagram of a portion of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention is shown. Figure 11 A schematic diagram of the structure of the first cover of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention is shown. Figure 12 The schematic diagram illustrates the structure of the second cover of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention. Figure 1 ; Figure 13 The schematic diagram illustrates the structure of the second cover of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention. Figure 2 ; Figure 14 A schematic diagram of the assembly of the electrical control box assembly of an air conditioner indoor unit according to an embodiment of the present invention is shown. Figure 15 for Figure 14 Enlarged view of point E in the middle.

[0018] The attached figures are labeled as follows: 100. Air conditioner indoor unit; 1. Front panel; 11. First opening; 12. First clearance opening; 2. Electrical control box assembly; 21. Electrical control box; 211. Box body; 2111. Guide part; 212. Box cover; 2121. First cover; 2122. Second cover; 2123. Handle; 2124. Fixing part; 2125. Second clearance opening; 2126. Retaining rib; 2127. Assembly groove; 2128. Limiting protrusion; 214. Wiring harness terminal; 215. Wire clamping part; 2151. Clamping arm; 216. First circumferential side wall; 217. Second circumferential side wall; 218. Terminal block; 22. Main control board; 3. Panel; 4. Electrical appliance cover; 51. First limiting part; 511. First limiting groove; 52. First mating part; 521. First limiting protrusion; 61. Connector; 611. Elastic arm; 612. Second limiting part; 62. Second mating part; 621. Slot; 6211. Limiting step; 71. Third limiting part; 711. Second limiting protrusion; 72. Third mating part; 721. Second limiting groove; 722. Limiting hole; X, first direction; Y, the second direction. Detailed Implementation

[0019] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0020] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0021] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0023] like Figures 1 to 15As shown, according to an embodiment of the present invention, an air conditioner indoor unit 100 is proposed, which includes a front frame 1, an electrical control box assembly 2 and a panel 3.

[0024] The faceplate 1 has a mounting cavity, and the front surface of the faceplate 1 has a first opening 11 corresponding to the mounting cavity, which communicates with the mounting cavity to accommodate the electrical control box assembly 2. The edge of the first opening 11 has a first clearance opening 12 communicating with the mounting cavity. The electrical control box assembly 2 is disposed in the mounting cavity and includes an electrical control box 21 and a main control board 22. The electrical control box 21 includes a box body 211 and a box cover 212. One side of the box body 211 is open to form a second opening communicating with the inner cavity of the box body 211. The box cover 212 is connected to the box body 211 and can open or close the second opening. The main control board 22 is detachably disposed in the electrical control box 21 through the second opening and the first clearance opening 12. By setting the first clearance opening 12, a direct channel extension can be provided for the subsequent disassembly, assembly, and maintenance of the main control board 22, avoiding other parts of the faceplate 1 from blocking the disassembly and assembly path of the electrical control box 21, improving the maintenance efficiency of the main control board 22, reducing maintenance difficulty and cost, and reducing the risk of damage to the faceplate 1 during disassembly and assembly.

[0025] The panel 3 is located directly in front of the face frame 1, which can cover and protect the front surface of the face frame 1. At the same time, the front surface of the face frame 1 can be exposed by opening the panel 3 when needed. When it is necessary to repair or inspect the main control board 22 in the electrical control box 21, the user or maintenance personnel can manually open the panel 3 to expose the first opening 11 and the first clearance opening 12 hidden behind the panel 3, which facilitates the inspection and maintenance of the electrical control board.

[0026] The indoor unit 100 of this utility model has an installation cavity and a first clearance opening 12 connected to the first opening 11 on the front side of the frame 1, and the electrical control box assembly 2 is set in the installation cavity. The box body 211 of the electrical control box assembly 2 forms a second opening on one side and is equipped with a cover 212 that can open and close the second opening. This allows the main control board 22 to be directly installed and removed through the second opening and the first clearance opening 12 without removing the entire frame 1 to expose the maintenance path of the main control board 22. During maintenance, the maintenance personnel do not need to remove the entire frame 1 first. They only need to open the cover 212 to expose the main control board 22 through the second opening of the box body 211 and the first clearance opening 12 at the edge of the first opening 11. Then, the main control board 22 can be directly removed for maintenance or replacement, which improves the maintenance efficiency of the main control board 22 and reduces the overall maintenance cost.

[0027] In some embodiments of this utility model, the main control board 22 is inserted into the box 211 along the first direction X, and the first clearance opening 12 is located on one side of the first opening 11 along the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0028] like Figures 1 to 4As shown, the first opening 11 is opened on the front surface of the face frame 1, and the first clearance opening 12 is located at the bottom edge of the first opening 11 along the second direction Y, that is, the vertical direction. The main control board 22 is inserted into the inner cavity of the box 211 of the electrical control box 21 through the channel formed by the first opening 11 and the first clearance opening 12 along the first direction X, that is, the front-back direction. This allows the main control board 22 to be repaired without disassembling the entire face frame 1. The electrical control board can be removed from the box 211 simply by passing through the second opening of the box 211 and the first clearance opening 12 at the edge of the first opening 11. Combined with the labor-saving operation of horizontal insertion, the disassembly and assembly steps are simplified and the maintenance time is shortened. At the same time, the first clearance opening 12 is located at the bottom edge of the first opening 11 and can be extended through the vertical channel in the vertical direction to minimize the maintenance entrance. The structure is compact and the space utilization rate is high.

[0029] In some embodiments of this utility model, the box body 211 is provided with guide portions 2111 on opposite side walls along the second direction Y, the guide portions 2111 extend along the first direction X, and the main control board 22 is configured to be able to move along the extension direction of the guide portions 2111.

[0030] like Figure 10 As shown, the guide section 2111 includes two parallel sliding grooves. These grooves provide precise guidance for the movement of the main control board 22, allowing it to move smoothly along the grooves, facilitating operation and improving the efficiency and accuracy of insertion. The two side edges of the main control board 22 engage with the sliding grooves on the side walls of the housing 211. When the main control board 22 is inserted or removed, it moves linearly along the extension direction of the sliding grooves. During insertion, the main control board 22 is inserted forward along the sliding grooves from the outside of the housing 211 into the inner cavity of the housing 211 until it is fully positioned within the inner cavity and reaches the predetermined position. During removal, the main control board 22 moves backward along the sliding grooves until it is completely detached from the housing 211.

[0031] In some embodiments of this utility model, a limiting structure is provided between the box body 211 and the box cover 212. The limiting structure includes a first limiting part 51 provided on the box body 211 and a first mating part 52 provided on the box cover 212. The first limiting part 51 and the first mating part 52 are connected in a mating manner. The precise limiting of the opening and closing state of the box cover 212 is achieved through the mating connection of the first limiting part 51 and the first mating part 52, ensuring the sealing reliability of the electrical control box 21 in daily use, and facilitating the opening or closing operation of the box cover 212, thus taking into account both safety and ease of maintenance.

[0032] In some embodiments of the present invention, the first limiting part 51 includes one of the first limiting groove 511 and the first limiting protrusion 521, and the first mating part 52 includes the other of the first limiting groove 511 and the first limiting protrusion 521, with the first limiting protrusion 521 inserted into the first limiting groove 511.

[0033] like Figure 6 and Figure 7 As shown, in this embodiment, a first limiting groove 511 is provided on one side wall of the box body 211. The first limiting groove 511 is a groove structure. The edge of the box cover 212 is provided with a first limiting protrusion 521 extending along the second direction Y. During installation, the first limiting protrusion 521 is precisely inserted into the corresponding first limiting groove 511 at the preset position, so that the box body 211 and the box cover 212 can be quickly positioned and connected. The installation steps are simple and easy to operate, which improves the assembly efficiency and limits the relative position of the box body 211 and the box cover 212, thereby ensuring the stability of the installation of the box cover 212 and the box body 211.

[0034] In some embodiments of this utility model, a connecting structure is provided between the box body 211 and the box cover 212. The connecting structure and the limiting structure are respectively located on opposite sides of the control box 21. The connecting structure includes a connector 61 on the box body 211 and a second mating part 62 on the box cover 212. The connector 61 and the second mating part 62 are connected in a mating manner. During disassembly and assembly, the box cover 212 is opened and closed first through the connecting structure, and then the box cover 212 is separated from the box body 211 through the limiting structure. The connecting structure enables the box cover 212 to open and close quickly, improving the ease of operation. The limiting structure precisely constrains the front-to-back and vertical displacement of the box cover 212. The two structures are located on opposite sides of the control box 21 to avoid functional interference. This simplifies the disassembly and assembly process, ensures the sealing of the control box 21 and the safety of the main control board 22, and improves maintenance efficiency and structural reliability.

[0035] In some embodiments of this utility model, the connector 61 includes at least one elastic arm 611 disposed on the end face of the cover 212 facing the box body 211. The elastic arm 611 extends in a direction away from the cover 212. One end of the elastic arm 611 away from the box body 211 is provided with a second limiting part 612. The second mating part 62 includes a slot 621. The elastic arm 611 extends into the slot 621 and is limited by the second limiting part 612 to the slot 621.

[0036] like Figure 8 and Figure 9As shown, the end of the elastic arm 611 is provided with a second limiting part 612, such as a barb, a protrusion or a locking block, etc. The locking groove 621 is opened at the position of the box body 211 corresponding to the elastic arm 611. The locking groove 621 is used to accommodate the end of the elastic arm 611. The inner side wall of the locking groove 621 is provided with a limiting step 6211 in the circumferential direction. The limiting step 6211 is used to engage and fix with the second limiting part 612. When installing the lid 212, first insert the first limiting protrusion 521 into the corresponding first limiting groove 511, then press the lid 212 toward the box body 211. The elastic arm 611 moves with the lid 212 and extends into the slot 621 on the box body 211. When the second limiting part 612 at the end of the elastic arm 611 moves to the limiting step 6211 of the slot 621, the elastic arm 611 is squeezed and undergoes elastic deformation until the second limiting part 612 passes through the limiting step 6211. Then the elastic arm 611 returns to its original shape, and the second limiting part 612 is locked with the slot 621 through the limiting step 6211, realizing the quick connection and fixation of the lid 212 and the box body 211. Finally, the box body 211 and the lid 212 are fastened with bolts to further improve the stability and reliability of the assembly. During disassembly, by applying a reverse pulling force, the second limiting part 612 is deformed again and disengaged from the slot 621, and the cover 212 can be opened, which simplifies the disassembly and assembly process and improves the operational efficiency when repairing or replacing the main control board 22.

[0037] like Figure 11 As shown, in some embodiments of this utility model, a handle 2123 is provided on the side of the lid 212 near the connecting structure. By applying force to the handle 2123, the lid 212 can be opened or closed with the second opening. During operation, force is applied to the handle 2123 along the opening and closing direction of the lid 212, efficiently transmitting the force applied by the human body to the lid 212. This directly pulls the second limiting part 612 of the elastic arm 611 out of the slot 621 or closes and locks it, reducing the force required to open the lid 212 and further reducing the operational difficulty when disassembling and assembling the main control board 22, thus balancing convenience and comfort.

[0038] like Figure 4 As shown, in some embodiments of this utility model, the electrical control box assembly 2 further includes a terminal block 218. The terminal block 218 is fastened to the box body 211 by bolts. The connection wire of the main control board 22 is inserted into the corresponding socket of the terminal block 218 to achieve connection. The other side of the terminal block 218 is connected to the external wiring harness terminal 214, such as power cord, sensor signal line, etc., to introduce the electrical signals of external power supply, sensor and other devices into the electrical control box 21.

[0039] In some embodiments of this utility model, the cover 212 includes a first cover body 2121 and a second cover body 2122. The first cover body 2121 is provided with a fixing part 2124 for fixing the wire harness terminal 214. The second cover body 2122 is detachably connected to the first cover body 2121. A second clearance opening 2125 is provided on the second cover body 2122 at a position corresponding to the fixing part 2124, and the fixing part 2124 passes through the second clearance opening 2125.

[0040] like Figure 5 , Figures 11 to 13 As shown, the fixing part 2124 and the first cover 2121 are an integral structure, which can be integrally formed with the first cover 2121 through injection molding, compression molding and other processes. The integrated structure reduces the assembly gap or connection failure risk between the fixing part 2124 and the first cover 2121, while reducing the number of parts and assembly steps, and improving the compactness and reliability of the overall structure. In this embodiment, the first cover 2121 is a plastic part, and the fixing part 2124 is integrally formed with the first cover 2121 through injection molding. The wire harness terminal 214 is electrically connected to the electrical control and fixed to the cover 212 through the fixing part 2124. One end of the wire harness terminal 214 is electrically connected to the solder pad or pin on the electrical control through welding, crimping or plugging, and the other end is connected and fixed to the cover 212 through the fixing part 2124.

[0041] The second cover 2122 covers the first cover 2121 and is detachably connected to it. The second cover 2122 is made of sheet metal. After covering the first cover 2121, the second cover 2122 enhances the overall impact resistance of the cover 212, preventing deformation or damage that could expose internal electrical components. It also effectively prevents the spread of flames to the outside of the electrical control box 21 in the event of a fire caused by an internal short circuit, thus improving the overall safety of the electrical control box assembly 2. The second cover 2122 has a second clearance opening 2125 that precisely corresponds in space to the fixing part 2124. The fixing part 2124 protrudes through the second clearance opening 2125. The second clearance opening 2125 ensures that the fixing part 2124's function of fixing the wire harness terminal 214 is not obstructed, and also prevents structural interference between the second cover 2122 and the fixing part 2124, ensuring the stability and reliability of the wire harness terminal 214 installation.

[0042] In some embodiments of this utility model, the main control board 22 is provided with a high-voltage area and a low-voltage area arranged at intervals, and the fixing part 2124 is set in the low-voltage area. This area itself does not involve high voltage and high current, and even if a local fault occurs, it is not easy to generate a strong open flame or explosion, which effectively reduces electrical safety hazards and improves the overall fire safety of the electrical control box 21.

[0043] like Figure 11As shown, in some embodiments of this utility model, the first cover 2121 is provided with a baffle 2126, which is arranged circumferentially along the inner sidewall of the second clearance opening 2125. The height of the baffle 2126 is higher than the periphery of the second clearance opening 2125. By providing multiple circumferentially surrounding baffles 2126, on the one hand, the gap between the edge of the second clearance opening 2125 and the fastener is filled, forming a smooth transition protective surface; on the other hand, its height above the periphery can effectively prevent the wire harness from directly contacting the sharp edge, thereby avoiding the wire harness sheath from being cut or worn, ensuring the insulation integrity of the wire harness, and improving the safety and reliability of the electrical control box assembly 2 in long-term use.

[0044] like Figure 14 and Figure 15 As shown, in some embodiments of this utility model, an assembly groove 2127 is provided on the second cover 2122 at a position corresponding to the fixing part 2124. The assembly groove 2127 is recessed toward the first cover 2121. Along the recessed direction of the assembly groove 2127 toward the first cover 2121, at least a portion of the wire harness terminal 214 is accommodated in the assembly groove 2127, that is, the wire harness terminal 214 is completely embedded in the recessed space of the assembly groove 2127, or only a portion of the structure of the wire harness terminal 214 is embedded in the recessed space of the assembly groove 2127. By providing a downwardly recessed mounting groove 2127 on the top plane of the second cover 2122, at least a portion of the fixing part 2124 and the wire harness terminal 214 are accommodated in the internal space of the second top wall, effectively reducing the overall height of the fixing part 2124 and the wire harness terminal 214, keeping the upper surface of the second cover 2122 flat or only slightly convex, thereby avoiding mechanical collision or compression with the upper structure. At the same time, without additionally increasing the overall thickness or volume of the electrical control box assembly 2, the electrical control box assembly 2 is compactly installed in the whole machine, improving space utilization.

[0045] like Figure 15 As shown, in some embodiments of this utility model, the assembly groove 2127 has an opening on one side, and a limiting protrusion 2128 protrudes from the side of the assembly groove 2127 near the opening. The limiting protrusion 2128, the groove wall of the assembly groove 2127, and the fixing part 2124 define a limiting space for limiting the wire harness terminal 214. The limiting protrusion 2128, near the opening, effectively prevents the wire harness terminal 214 from moving forward and becoming loose, while the step of the groove wall of the assembly groove 2127 itself forms a barrier to prevent the terminal from retracting. This double limiting structure ensures that the wire harness terminal 214 is firmly locked within the limiting space, thereby improving the reliability, stability, and overall assembly quality of the wire harness terminal 214 connection.

[0046] like Figure 15As shown, in some embodiments of this utility model, a wire-holding portion 215 is provided on the first cover 2121. The wire-holding portion 215 is located on the side of the assembly groove 2127 with an opening, and is used to fix the wire harness. The wire-holding portion 215 includes two opposing and spaced-apart holding arms 2151. The holding arms 2151 extend integrally from the surface of the first cover 2121 and maintain a certain gap at the free end away from the first cover 2121, thereby forming a slot for inserting the wire harness. When the wire harness is pushed in from the slot, the holding arms 2151 will open outwards moderately under the action of external force, allowing the wire harness to smoothly enter between the two arms. After the wire harness enters, the holding arms 2151 retract inwards to return to their original position by their own elastic force, thereby clamping the wire harness in the middle, effectively preventing the wire harness from shifting or falling off during use, and improving the stability of the wire harness arrangement and the reliability of the overall assembly.

[0047] In some embodiments of this utility model, the first cover 2121 includes a first circumferential sidewall 216, on which a third limiting part 71 is provided. The second cover 2122 includes a second circumferential sidewall 217, on which a third mating part 72 adapted to the third limiting part 71 is provided. The third limiting part 71 and the third mating part 72 cooperate with each other. By providing the third limiting part 71 on the first cover 2121 and the third mating part 72 adapted to it on the second cover 2122, the two cooperate with each other, which can accurately guide the relative position of the second cover 2122 and the first cover 2121 during assembly, so that the fixing part 2124 and the second clearance opening 2125 are precisely aligned, achieving fast and accurate installation. At the same time, through the limiting effect of the third limiting part 71 and the third mating part 72, the relative displacement of the two under the action of external force is effectively limited, enhancing the overall connection stability.

[0048] In some embodiments of this utility model, one of the third limiting part 71 and the third mating part 72 is the second limiting protrusion 711, and the other is the second limiting groove 721 or the limiting hole 722 that mates with the second limiting protrusion 711.

[0049] like Figures 11 to 13As shown in this embodiment, the first circumferential sidewall 216 is provided with second limiting protrusions 711 at intervals, and one sidewall of the second circumferential sidewall 217 is provided with a plurality of second limiting grooves 721 at intervals, and the opposite sidewall is provided with a plurality of limiting holes 722 at intervals. The second limiting grooves 721 are groove structures, and the limiting holes 722 are through holes penetrating the second circumferential sidewall 217. The plurality of second limiting protrusions 711 are provided in a one-to-one correspondence with the second limiting grooves 721 and the limiting holes 722. During installation, the second limiting protrusion 711 is precisely inserted into the corresponding second limiting groove 721 or limiting hole 722 at a preset position. When the second limiting protrusion 711 engages with the second limiting groove 721, lateral positioning is achieved through the interference fit or snap-fit ​​between the second limiting protrusion 711 and the inner wall of the second limiting groove 721, preventing horizontal misalignment of the two covers. When the second limiting protrusion 711 engages with the limiting hole 722, the end of the second limiting protrusion 711 can be embedded in the limiting hole 722 to form an axial snap-fit ​​or stop, restricting the relative movement of the two covers in the vertical direction. By setting the second limiting protrusion 711, the second limiting groove 721, and the limiting hole 722 to connect the first cover 2121 and the second cover 2122, the assembly process is simplified, and the overall structural stability and assembly efficiency of the covers are improved.

[0050] In other embodiments, a plurality of second limiting protrusions 711 may be provided at intervals on the circumferential sidewall of the second cover 2122, and a plurality of second limiting grooves 721 and limiting holes 722 may be provided at intervals on the circumferential sidewall of the first cover 2121. The specific number, distribution spacing and shape of the limiting structure may be flexibly adjusted according to actual assembly requirements.

[0051] like Figure 1 As shown, in some embodiments of this utility model, the indoor unit 100 of the air conditioner also includes an electrical cover 4. The electrical cover 4 is connected to the face frame 1 and can open or close the first opening 11. When it is necessary to inspect the electrical control box assembly 2, the electrical cover 4 can be opened to expose the internal electrical control box assembly 2 for easy operation. Under normal use, the electrical cover 4 closes the first opening 11, which serves to protect the electrical control box assembly 2, cover the internal structure, and improve the appearance.

[0052] The second aspect of this utility model provides an air conditioner, including an outdoor unit and an indoor unit 100 as described above. The outdoor unit includes a compressor, a heat exchanger, a four-way valve, an expansion valve, etc. The compressor, the outdoor heat exchanger, the four-way valve, the expansion valve, and the indoor heat exchanger are connected by refrigerant pipelines to form a refrigeration / heating system.

[0053] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A face frame, wherein a mounting cavity is formed in the face frame, and a first opening communicating with the mounting cavity is formed on the front surface of the face frame corresponding to the mounting cavity, and the edge of the first opening has a first clearance opening; An electrical control box assembly is disposed within the mounting cavity. The electrical control box assembly includes an electrical control box and a main control board. The electrical control box includes a box body and a box cover. One side of the box body is open to form a second opening communicating with the inner cavity of the box body. The box cover is connected to the box body and can open or close the second opening. The main control board is detachably disposed within the electrical control box through the second opening and the first clearance opening.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The main control board is inserted into the box along the first direction, and the first clearance opening is located on one side of the first opening along the second direction, which is perpendicular to the first direction.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The box body has guide portions on its opposite side walls along the second direction, the guide portions extend along the first direction, and the main control board is configured to move along the extension direction of the guide portions.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, A limiting structure is provided between the box body and the box lid. The limiting structure includes a first limiting part on the box body and a first mating part on the box lid. The first limiting part and the first mating part are connected in a mating manner.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The first limiting part includes one of a first limiting groove and a first limiting protrusion, and the first mating part includes the other of the first limiting groove and the first limiting protrusion, with the first limiting protrusion inserted into the first limiting groove.

6. The indoor unit of the air conditioner according to claim 4, characterized in that, A connecting structure is provided between the box body and the box cover. The connecting structure and the limiting structure are respectively located on opposite sides of the electrical control box. The connecting structure includes a connector on the box body and a second mating part on the box cover. The connector and the second mating part are connected in a mating manner.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The connector includes at least one elastic arm disposed on the end face of the lid facing the box body. The elastic arm extends in a direction away from the lid. A second limiting part is provided at one end of the elastic arm away from the box body. The second mating part includes a slot. The elastic arm extends into the slot and is limited by the second limiting part to the slot.

8. The indoor unit of the air conditioner according to claim 6, characterized in that, The lid has a handle on the side near the connecting structure. Applying force to the handle allows the lid to open or close the second opening.

9. The indoor unit of an air conditioner according to any one of claims 1 to 8, characterized in that, The box lid includes: A first cover body, wherein a fixing part is provided on the first cover body, the fixing part being used to fix the wire harness terminal; The second cover is detachably connected to the first cover. A second clearance opening is provided on the second cover at a position corresponding to the fixing part, and the fixing part passes through the second clearance opening.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The first cover includes a first circumferential sidewall, on which a third limiting portion is provided; the second cover includes a second circumferential sidewall, on which a third mating portion is provided that is adapted to the third limiting portion; the third limiting portion and the third mating portion cooperate with each other.

11. The indoor unit of the air conditioner according to claim 10, characterized in that, One of the third limiting part and the third mating part is the second limiting protrusion, and the other is the second limiting groove or limiting hole that mates with the second limiting protrusion.

12. An air conditioner, characterized in that, The indoor unit of the air conditioner includes any one of claims 1 to 11.

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