Electric control box assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses an electric control box assembly, an air conditioner outdoor unit and an air conditioner. The electric control box assembly comprises a box base; the box cover covers the box base and comprises a main cover and an auxiliary cover, the main cover is provided with a notch, the notch comprises an installation notch and a wire containing notch, the opening end of the wire containing notch is communicated with the installation notch, and the opening end of the installation notch faces the box base; the first sealing piece is provided with a sealing thread clamping seam and two flexible pieces and is arranged at the thread containing notch in a sealing mode, one ends of the two flexible pieces are opposite, the end faces of the opposite ends of the two flexible pieces abut against each other in the thickness direction of the flexible pieces in a sealing mode through surface contact, the sealing thread clamping seam is formed, and the sealing thread clamping seam is located in the thread containing notch; and one end of the sealing wire clamping seam is communicated with the mounting notch. According to the scheme, the sizes of the end faces of the opposite ends of the two flexible sheets in the thickness direction of the flexible sheets are increased, so that the connecting line is arranged in the sealing line clamping seam, the end faces of the opposite ends of the two flexible sheets can better seal and clamp the connecting line, and reliable and complete sealing is achieved.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of air conditioning equipment technology, specifically to an electrical control box assembly, an outdoor air conditioning unit, and an air conditioner. Background Technology

[0002] In existing multi-split air conditioners, the outdoor unit uses non-flammable refrigerant to prevent refrigerant combustion and explosion caused by refrigerant leakage in the electrical control box. If the outdoor unit uses a flammable refrigerant (such as propane R290), the electrical control box needs to be sealed, especially at the wiring passages of the wiring notches on the control box. However, no reliable and complete sealing solution has yet been proposed in this field for the wiring notches of the electrical control box. Utility Model Content

[0003] This application provides an electrical control box assembly, including: a box base; a box cover, which is fitted onto the box base and includes a main cover, the main cover having a notch, the notch including an installation notch and a wire receiving notch, the opening end of the wire receiving notch communicating with the installation notch, the opening end of the installation notch facing the box base; and a first sealing member having a sealing wire clamping opening and two flexible sheets, sealingly disposed at the wire receiving notch, one end of the two flexible sheets facing each other, the end faces of the two flexible sheets abutting each other in the thickness direction of the flexible sheets through surface contact sealing, and forming the sealing wire clamping opening, the sealing wire clamping opening being located inside the wire receiving notch, one end of the sealing wire clamping opening communicating with the installation notch.

[0004] In some exemplary embodiments, one of the sides of the first seal facing the interior of the main cover and the other side of the first seal facing the exterior of the main cover is provided with a third groove and a fourth groove. The third groove and the fourth groove are located on both sides of the sealing seam opening. The groove sidewalls of the adjacent ends of the third groove and the fourth groove abut against each other. One of the two flexible sheets includes the bottom wall of the third groove and the groove sidewall of the third groove adjacent to the fourth groove. The other of the two flexible sheets includes the bottom wall of the fourth groove and the groove sidewall of the fourth groove adjacent to the third groove.

[0005] In some exemplary embodiments, one of the sides of the first seal facing the inside of the main cover and the side of the first seal facing the outside of the main cover is provided with a first groove and a second groove. The first groove and the second groove are located on both sides of the sealing seam opening, and the first groove and the second groove correspond to the positions of the third groove and the fourth groove, respectively.

[0006] In some exemplary embodiments, the adjacent ends of the first groove and the second groove are connected.

[0007] In some exemplary embodiments, the first groove and the second groove include multiple sets arranged sequentially in the extending direction of the sealing seam opening, and the third groove and the fourth groove include multiple sets arranged sequentially in the extending direction of the sealing seam opening.

[0008] In some exemplary embodiments, the containment notch includes multiple notches, and the first sealing member includes a connecting section, multiple inserts, and two mounting sections. The multiple inserts are sealed and inserted into the multiple containment notches one by one. The connecting section is located between two mounting sections, and adjacent inserts are connected through the connecting section. The two mounting sections are connected to the two outermost inserts one by one, and the connecting section and the two mounting sections abut against the outer end face of the opening end of the multiple containment notches. Each insert is provided with the sealing clamping seam, the first groove, the second groove, the third groove, and the fourth groove.

[0009] In some exemplary embodiments, the box cover further includes a secondary cover, which is sealed at the mounting notch and together with the main cover forms the annular peripheral wall of the box cover, the annular peripheral wall being sealed to the box base.

[0010] In some exemplary embodiments, the sub-cover has a pressing edge and an overlapping edge, and the end face of the insert facing the interior of the mounting notch, the end face of the mounting segment facing the interior of the mounting notch, and the end face of the connecting segment facing the interior of the mounting notch all abut against the pressing edge, and the side face of the insert facing the exterior of the main cover, the side face of the mounting segment facing the exterior of the main cover, and the side face of the connecting segment facing the exterior of the main cover all abut against the overlapping edge.

[0011] In some exemplary embodiments, the opening end of the notch is located on the first wall of the mounting notch, the end of the sub-cap facing the first wall of the mounting notch is sealed to the first wall through the first sealing element, and the ends of the sub-cap facing the other walls of the mounting notch are sealed to the other walls of the mounting notch through a labyrinth sealing structure.

[0012] In some exemplary embodiments, the end of the sub-cover facing the other opening wall of the mounting notch is provided with a first slot, and the other opening wall of the mounting notch is provided with a second slot. The first slot and the second slot are inserted into each other to form the labyrinth sealing structure.

[0013] This application also provides an air conditioner outdoor unit, including the electrical control box assembly described in any of the above embodiments.

[0014] This application also provides an air conditioner, including the outdoor unit of the air conditioner described in any of the above embodiments.

[0015] The technical solution provided in this application embodiment is that the first sealing element is sealed at the notch of the wire, thereby sealing the notch of the wire. The connecting wire led out from the inside of the electrical control box assembly passes through the installation notch and is placed inside the sealing wire clamping seam. Since the end faces of the two flexible sheets at opposite ends abut against each other in the thickness direction of the flexible sheets through surface contact and form the sealing wire clamping seam, the dimensions of the end faces of the two flexible sheets at opposite ends in the thickness direction of the flexible sheets are larger. The end faces of the two flexible sheets at opposite ends will better seal and clamp the connecting wire, keeping the sealing wire clamping seam completely closed, and achieving a reliable and complete seal at the wire passage of the wire notch (i.e., at the sealing wire clamping seam).

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0018] Figure 1 A three-dimensional structural schematic diagram of the electrical control box assembly provided in some embodiments of this application;

[0019] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the electrical control box assembly; connecting lines are not shown.

[0020] Figure 3 for Figure 2 A partial cross-sectional view of the electrical control box assembly shown.

[0021] Figure 4 for Figure 3 A schematic diagram of a partial structure;

[0022] Figure 5 for Figure 1 A three-dimensional structural diagram of the central cover;

[0023] Figure 6 for Figure 1 A three-dimensional structural diagram of the first sealing element from one perspective;

[0024] Figure 7 for Figure 1A three-dimensional structural diagram of the first sealing element from another perspective;

[0025] Figure 8 for Figure 1 A three-dimensional structural diagram of the central sub-cover from a single perspective;

[0026] Figure 9 for Figure 1 A three-dimensional structural diagram of the middle sub-cover from another perspective;

[0027] Figure 10 for Figure 1 A partial schematic diagram of the three-dimensional structure of the base of the middle box.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 100 Box base, 110 Annular groove, 200 Main cover, 210 Mounting notch, 211 First opening wall, 212 Other opening walls, 220 Wire notch, 230 Labyrinth sealing structure, 300 Secondary cover, 310 Protruding post, 320 First slot, 330 Pressing edge, 340 Overlapping edge, 400 First seal, 410 Sealing clamp seam, 411 Flexible sheet, 420 First groove, 430 Second groove, 440 Third groove, 450 Fourth groove, 460 First groove sidewall, 470 Second groove sidewall, 480 Third groove sidewall, 491 Connecting section, 492 Insert post, 493 Mounting section, 500 Second seal, 510 Strength weakening groove, 520 Insertion hole, 530 Stud, 540 Snap-fit ​​part, 550 Snap-fit ​​mating part, 600 Connecting wire. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0031] The electrical control box assembly provided in the embodiments of this application, such as Figures 1 to 10As shown, it includes: a box base 100; a box cover, which is mounted on the box base 100 and includes a main cover 200, the main cover 200 having a notch, the notch including an installation notch 210 and a grommet notch 220, the opening end of the grommet notch 220 communicating with the installation notch 210, the opening end of the installation notch 210 facing the box base 100; and a first sealing member 400 having a sealing grommet opening 410 and two flexible pieces 411, the first sealing member 400 being sealed at the grommet notch 220, one end of the two flexible pieces 411 facing each other, the end faces of the two flexible pieces 411 abutting each other in the thickness direction of the flexible member 411 through surface contact sealing, and forming the sealing grommet opening 410, the sealing grommet opening 410 being located inside the grommet notch 220, one end of the sealing grommet opening 410 communicating with the installation notch 210.

[0032] In this electrical control box assembly, the first sealing element 400 is sealed at the wire notch 220, thereby sealing the wire notch 220. The connecting wire 600, which is led out from inside the electrical control box assembly, passes through the installation notch 210 and enters the sealing wire clamping seam 410 from one end of the installation notch 210. Since the end faces of the two flexible sheets 411 at opposite ends are in contact and seal against each other in the thickness direction of the flexible sheets 411, forming the sealing wire clamping seam 410, the end faces of the two flexible sheets 411 at opposite ends are larger in the thickness direction of the flexible sheets 411. The end faces of the two flexible sheets 411 at opposite ends will better seal and clamp the connecting wire 600, keeping the sealing wire clamping seam 410 closed, thus achieving a reliable and complete seal at the wire passage of the wire notch 220 (i.e., at the sealing wire clamping seam 410). In this design, the sealing seam 410 extends through the thickness direction of the flexible sheet 411, and the thickness direction of the two flexible sheets 411 is perpendicular to the side of the flexible component.

[0033] In some examples, the lid also includes a secondary cover 300, which is sealed at the mounting notch 210 and together with the main cover 200 forms the annular peripheral wall of the lid (the annular peripheral wall is a closed annular peripheral wall), and the annular peripheral wall is sealed to the box base 100.

[0034] The secondary cover 300 is sealed at the installation notch 210, thus sealing the installation notch 210. Under the combined pressure and restraint of the first sealing element 400 and the wall of the notch 220 and the secondary cover 300, the two flexible pieces 411 can better seal and clamp the connecting line 600, achieving complete closure of the sealing gap 410. Therefore, this solution achieves a reliable and complete seal at the notch. Furthermore, the secondary cover 300 and the main cover 200 together form the annular circumferential wall of the box cover. The annular circumferential wall seals and cooperates with the box base 100, achieving a seal between the box base 100 and the box cover. Therefore, this solution achieves a complete seal for the electrical control box assembly.

[0035] In some examples, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 10 As shown, the electrical control box assembly also includes a second sealing element 500. The box base 100 is provided with an annular groove 110, and the annular peripheral wall is inserted into the annular groove 110. The second sealing element 500 is located between the annular peripheral wall and the groove wall of the annular groove 110, and is configured to seal the gap between the annular peripheral wall and the groove wall of the annular groove 110, so as to achieve a sealed fit between the annular peripheral wall and the box base 100. This solution has a simple structure and is easy to operate.

[0036] In some examples, such as Figures 1 to 4 , Figure 6 and Figure 7 As shown, one of the sides of the first sealing member 400 facing the interior of the main cover 200 and the side of the first sealing member 400 facing the exterior of the main cover 200 is provided with a first groove 420 and a second groove 430, which are located on both sides of the sealing seam opening 410. The other of the sides of the first sealing member 400 facing the interior of the main cover 200 and the side of the first sealing member 400 facing the exterior of the main cover 200 is provided with a third groove 440 and a fourth groove 450, which are located on both sides of the sealing seam opening 410. Wherein, as... Figure 6 and Figure 7 As shown, the first groove 420 and the second groove 430 correspond to the third groove 440 and the fourth groove 450 respectively, and the adjacent ends of the first groove 420 and the second groove 430 are connected, while the adjacent sidewalls of the third groove 440 and the fourth groove 450 abut against each other. At this time, the bottom wall of the first groove 420 and the bottom wall of the third groove 440 are shared bottom walls, and the bottom wall of the second groove 430 and the bottom wall of the fourth groove 450 are shared bottom walls. One of the two flexible sheets 411 includes the shared bottom wall of the first groove 420 and the third groove 440 and the sidewall of the third groove 440 adjacent to the fourth groove 450, and the other of the two flexible sheets 411 includes the shared bottom wall of the second groove 430 and the fourth groove 450 and the sidewall of the fourth groove 450 adjacent to the third groove 440.

[0037] Both the sidewalls of the third groove 440 and the fourth groove 450 are closed annular structures. The sidewall of the third groove 440 and the fourth groove 450 adjacent to each other is the first groove sidewall 460. The two groove sidewalls connected to the first groove sidewall 460 are the second groove sidewall 470 and the third groove sidewall 480, respectively. The second groove sidewall 470 and the third groove sidewall 480 are opposite sidewalls. The adjacent ends of the two second groove sidewalls 470 (one is the second groove sidewall 470 of the third groove 440 and the other is the second groove sidewall 470 of the fourth groove 450) abut together. The adjacent ends of the two third groove sidewalls 480 (one is the third groove sidewall 480 of the third groove 440 and the other is the third groove sidewall 480 of the fourth groove 450) abut together. In this way, the elastic recovery ability of the two first groove sidewalls 460 is better, which can better ensure the sealing effect between the connecting line 600 and the first groove sidewall 460. Moreover, under the constraint of the opening wall of the notch 220, the connecting wire 600 requires a large force to pass between the two second groove sidewalls 470 and between the two third groove sidewalls 480, while the force required to move between the two first groove sidewalls 460 is significantly reduced. Therefore, under the inertia of the operator's wire clamping action, the connecting wire 600 is eventually positioned between the two first groove sidewalls 460, ensuring that the connecting wire 600 is sealed between the two first groove sidewalls 460.

[0038] It can be, such as Figures 1 to 4 , Figure 6 and Figure 7 As shown, the first sealing member 400 has a first groove 420 and a second groove 430 on the side facing the inside of the main cover 200, and a third groove 440 and a fourth groove 450 on the side facing the outside of the main cover 200; or it can be that the first sealing member 400 has a first groove 420 and a second groove 430 on the side facing the outside of the main cover 200, and a third groove 440 and a fourth groove 450 on the side facing the inside of the main cover 200, etc.; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this utility model, and will not be elaborated here, and should all fall within the protection scope of this application.

[0039] In some exemplary embodiments, the first groove 420 and the second groove 430 include multiple sets arranged sequentially in the extending direction of the sealing seam opening 410, and the third groove 440 and the fourth groove 450 include multiple sets arranged sequentially in the extending direction of the sealing seam opening 410.

[0040] In some embodiments, such as Figures 1 to 4 , Figure 6 and Figure 7As shown, the accommodating notch 220 includes multiple notches. The first sealing element 400 includes a connecting section 491, multiple inserts 492, and two mounting sections 493. The multiple inserts 492 are sealed and inserted into the multiple accommodating notches 220 one by one. The connecting section 491 is located between the two mounting sections 493. The ends of adjacent inserts 492 located at the opening of the accommodating notch are connected by the connecting section 491. The two mounting sections 493 are connected one by one to the ends of the two outermost inserts 492 located at the opening of the accommodating notch. The connecting section 491 and the two mounting sections 493 abut against the outer end face of the opening end of the multiple accommodating notches 220. Each insert 492 is provided with a sealing clamping seam 410, a first groove 420, a second groove 430, a third groove 440, and a fourth groove 450. At least one insert post 492 is provided with a plurality of first grooves 420, a plurality of second grooves 430, a plurality of third grooves 440 and a plurality of fourth grooves 450, wherein the plurality of first grooves 420 correspond one-to-one with the plurality of third grooves 440, and the plurality of second grooves 430 correspond one-to-one with the plurality of fourth grooves 450.

[0041] It can be, such as Figures 1 to 5 As shown, the notch 220 is located on the top wall of the main cover 200, and the mounting notch 210 is located on the peripheral wall of the main cover 200 (the peripheral wall of the main cover 200 is an open annular peripheral wall); or it can be that the notch 220 is located on both the top wall and the peripheral wall of the main cover 200, and the mounting notch 210 is located on the peripheral wall of the main cover 200 (the peripheral wall of the main cover 200 is an open annular peripheral wall), etc.; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this utility model, so they will not be elaborated here, and all should fall within the protection scope of this application.

[0042] It can be, such as Figures 3 to 6 As shown, the connecting section 491 is provided with an insertion hole 520, and the outer end face of the opening end of the wire notch 220 is provided with a stud 530. The end of the sub-cover 300 adjacent to the wire notch 220 is provided with a through hole. The stud 530 is inserted into the insertion hole 520, and the screw passes through the through hole and is screwed onto the stud 530, so that the end of the sub-cover 300 adjacent to the wire notch 220 is fixedly connected to the outer end face of the opening end of the wire notch 220. This can better ensure that the end of the sub-cover 300 adjacent to the wire notch 220 is completely sealed to the outer end face of the opening end of the wire notch 220.

[0043] It can be, such as Figure 3 , Figure 4 , Figure 6 and Figure 8As shown, the mounting section 493 is provided with a strength weakening groove 510. The strength weakening groove 510 is used to weaken the structural strength of the mounting section 493 and enhance its variability. This makes it easier for the connecting wire 600 to pass through one end of the sealing clamp seam 410 (this end is the end of the sealing clamp seam 410 that is connected to the mounting notch 210) and be placed inside the sealing clamp seam 410. The sub-cover 300 is provided with a protrusion 310, which is inserted into the strength weakening groove 510. This protrusion 310 enhances the structural strength of the mounting section 493 and weakens its variability, thus ensuring a complete seal at the mounting section 493 after the sub-cover 300 is installed.

[0044] In some embodiments, such as Figure 3 As shown, the opening end of the notch 220 is located at the first opening wall 211 of the mounting notch 210, and the end of the sub-cover 300 facing the first opening wall 211 of the mounting notch 210 is sealed to the first opening wall 211 by the first sealing member 400. This can be, for example... Figures 2 to 4 , Figure 8 and Figure 9 As shown, the end of the secondary cover 300 near the notch 220 has a pressing edge 330 and an overlapping edge 340. The end face of the insert post 492 facing the inside of the mounting notch 210, the end face of the mounting section 493 facing the inside of the mounting notch 210, and the end face of the connecting section 491 facing the inside of the mounting notch 210 all abut against the pressing edge 330. The side of the insert post 492 (the end near the mounting notch 210) facing the outside of the main cover 200, the side of the mounting section 493 facing the outside of the main cover 200, and the side of the connecting section 491 facing the outside of the main cover 200 all abut against the overlapping edge 340. This improves the sealing performance between the secondary cover 300 and the first sealing element 400, thus ensuring a complete seal between the secondary cover 300 and the first sealing element 400.

[0045] In some embodiments, such as Figures 2 to 4 , Figure 8 As shown, the ends of the secondary cover 300 facing the other opening walls 212 of the mounting notch 210 are sealed together with the other opening walls 212 of the mounting notch 210 through a labyrinth sealing structure 230. This can be, for example... Figure 3 , Figure 4 and Figure 8As shown, the end of the secondary cover 300 facing the other opening wall 212 of the mounting notch 210 is provided with a first slot 320, and the other opening wall 212 of the mounting notch 210 is provided with a second slot. The first slot 320 and the second slot are inserted into each other to form a labyrinth seal structure 230. Since the density of the combustible refrigerant is greater than that of air (e.g., the relative density of propane R290 is 1.56, which is heavier than air and belongs to heavy gas), the combustible refrigerant will not enter the interior of the electrical control box assembly through the labyrinth seal structure 230 under normal pressure. In this scheme, the sealing between the end of the secondary cover 300 facing the other opening wall 212 of the mounting notch 210 and the other opening wall 212 of the mounting notch 210 is also guaranteed.

[0046] In some embodiments, such as Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the end of the other opening wall 212 of the sub-cover 300 facing the mounting notch 210 is also provided with a snap-fit ​​part 540, and the other opening wall 212 of the mounting notch 210 is provided with a snap-fit ​​mating part 550, and the snap-fit ​​part 540 snaps into the snap-fit ​​mating part 550.

[0047] It can be that the snap-fit ​​part is a snap hook, the snap-fit ​​mating part is a snap-fit ​​surface, and the snap hook is snapped onto the snap-fit ​​surface; or it can be that the snap-fit ​​part is a snap-fit ​​surface, the snap-fit ​​mating part is a snap hook, and the snap hook is snapped onto the snap-fit ​​surface, etc.; all of the above can achieve the purpose of this application, and their purpose has not deviated from the design concept of this utility model, so they will not be described in detail here, and all should fall within the protection scope of this application.

[0048] The air conditioner outdoor unit (not shown in the figure) provided in this application embodiment includes the electrical control box assembly described in any of the above embodiments.

[0049] The outdoor unit of this air conditioner has all the advantages of the electrical control box assembly provided in any of the above embodiments, and will not be repeated here.

[0050] The air conditioner provided in this application embodiment (not shown in the figure) includes the air conditioner outdoor unit described in any of the above embodiments.

[0051] This air conditioner possesses all the advantages of the outdoor unit provided in any of the above embodiments, which will not be repeated here.

[0052] In summary, the technical solution provided in this application embodiment involves a first sealing element that is disposed at the notch of the housing wire, thereby sealing the notch. The connecting wire led out from inside the electrical control box assembly passes through the installation notch from the open end of the installation notch and is placed inside the sealing clamping seam. Since the end faces of the two flexible sheets at opposite ends abut against each other in the thickness direction of the flexible sheets through surface contact and form the sealing clamping seam, the dimensions of the end faces of the two flexible sheets at opposite ends in the thickness direction of the flexible sheets are larger. The end faces of the two flexible sheets at opposite ends will better seal and clamp the connecting wire, keeping the sealing clamping seam completely closed, thus achieving a reliable and complete seal at the point where the housing wire passes (i.e., at the sealing clamping seam).

[0053] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "square structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0055] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. An electrical control box assembly, characterized in that, include: Box base; A box lid, fitted onto the box base, and including a main lid, the main lid having a notch, the notch including a mounting notch and a receiving notch, the opening end of the receiving notch communicating with the mounting notch, the opening end of the mounting notch facing the box base; and A first sealing element having a sealing seam opening and two flexible sheets is sealed at the notch of the duct. One end of the two flexible sheets is opposite to each other, and the end faces of the opposite ends of the two flexible sheets abut against each other in the thickness direction of the flexible sheets through surface contact sealing, thereby forming the sealing seam opening. The sealing seam opening is located inside the notch of the duct, and one end of the sealing seam opening is connected to the mounting notch.

2. The electrical control box assembly according to claim 1, characterized in that, The first sealing element has a third groove and a fourth groove on one side facing the inside of the main cover and the other side facing the outside of the main cover. The third groove and the fourth groove are located on both sides of the sealing seam. The groove sidewalls of the adjacent ends of the third groove and the fourth groove abut against each other. One of the two flexible sheets includes the bottom wall of the third groove and the groove sidewall of the third groove adjacent to the fourth groove. The other of the two flexible sheets includes the bottom wall of the fourth groove and the groove sidewall of the fourth groove adjacent to the third groove.

3. The electrical control box assembly according to claim 2, characterized in that, The first seal has a first groove and a second groove on one of the sides facing the inside of the main cover and the side facing the outside of the main cover. The first groove and the second groove are located on both sides of the sealing seam opening, and the first groove and the second groove correspond to the positions of the third groove and the fourth groove, respectively.

4. The electrical control box assembly according to claim 3, characterized in that, The adjacent ends of the first groove and the second groove are connected.

5. The electrical control box assembly according to claim 3, characterized in that, The first groove and the second groove include multiple sets arranged sequentially in the extending direction of the sealing seam opening, and the third groove and the fourth groove include multiple sets arranged sequentially in the extending direction of the sealing seam opening.

6. The electrical control box assembly according to claim 3, characterized in that, The notch for the grommets includes multiple notches. The first sealing element includes a connecting section, multiple inserts, and two mounting sections. The multiple inserts are sealed and inserted into the multiple notches for the grommets in a one-to-one correspondence. The connecting section is located between the two mounting sections. Adjacent inserts are connected through the connecting section. The two mounting sections are connected to the two outermost inserts in a one-to-one correspondence. The connecting section and the two mounting sections abut against the outer end face of the opening of the multiple notches for the grommets. Each insert has the sealing notch, the first groove, the second groove, the third groove, and the fourth groove.

7. The electrical control box assembly according to claim 6, characterized in that, The box cover also includes a secondary cover, which is sealed at the mounting notch and together with the main cover forms the annular circumferential wall of the box cover. The annular circumferential wall is in a sealing fit with the box base. The secondary cover has a pressing edge and an overlapping edge. The end face of the insert facing the inside of the mounting notch, the end face of the mounting section facing the inside of the mounting notch, and the end face of the connecting section facing the inside of the mounting notch all abut against the pressing edge. The side face of the insert facing the outside of the main cover, the side face of the mounting section facing the outside of the main cover, and the side face of the connecting section facing the outside of the main cover all abut against the overlapping edge.

8. The electrical control box assembly according to any one of claims 1 to 6, characterized in that, The box cover also includes a secondary cover, which is sealed at the mounting notch and together with the main cover forms the annular circumferential wall of the box cover. The annular circumferential wall is in a sealing fit with the box base.

9. The electrical control box assembly according to claim 8, characterized in that, The opening end of the notch is located on the first wall of the mounting notch. The end of the sub-cover facing the first wall of the mounting notch is sealed to the first wall through the first sealing element. The ends of the sub-cover facing the other walls of the mounting notch are sealed to the other walls of the mounting notch through a labyrinth sealing structure.

10. The electrical control box assembly according to claim 9, characterized in that, The end of the sub-cover facing the other opening wall of the mounting notch is provided with a first slot, and the other opening wall of the mounting notch is provided with a second slot. The first slot and the second slot are inserted into each other to form the labyrinth sealing structure.

11. An outdoor unit for an air conditioner, characterized in that, Includes the electrical control box assembly as described in any one of claims 1 to 10.

12. An air conditioner, characterized in that, Includes the outdoor unit of the air conditioner as described in claim 11.

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